JP7071325B2 - Club heads with enhanced club head faces, and related methods - Google Patents

Description

(Mutual reference of related applications)
This application is the priority of US Provisional Patent Application No. 62 / 521,998 filed June 19, 2017, and US Provisional Patent Application No. 62 / 359,450 filed July 7, 2016. Is to insist. In addition, this application claims the priority of US Patent Application No. 15 / 628,639 filed on June 20, 2017. The entire contents of the above disclosure are incorporated herein by reference in their entirety.

The present disclosure relates generally to sports equipment, and more particularly to golf club heads and related methods.

Various characteristics of a golf club can affect the performance of the golf club. For example, the center of gravity, moment of inertia, and coefficient of restitution of the club head of a golf club are characteristics of a golf club that can affect performance, respectively.

The center of gravity and moment of inertia of the club head of a golf club are a function of the mass distribution of the club head. Specifically, the mass of the club head should be closer to the sole of the club head, farther from the face of the club head, and / or closer to the toe and heel ends of the club head. When distributed so as to be, the center of gravity and / or moment of inertia of the club head may change. For example, distributing the mass of the club head closer to the sole of the club head and / or farther from the face of the club head increases the flight angle of the golf ball hit by the club head. Can be. On the other hand, increasing the flight angle of the golf ball may increase the distance the golf ball travels. In addition, distributing the club head mass closer to the toe and / or heel ends of the club head can affect the moment of inertia of the club head, which can be the tolerance of the golf club. Can be changed.

In addition, the coefficient of restitution of the club head of a golf club can be at least a function of the flexibility of the club head face. On the other hand, the flexibility of the face of the club head can be a function of the geometry of the face (eg height, width and / or thickness) and / or the material properties of the face (eg Young's modulus). That is, maximizing the height and / or width of the face and / or minimizing the thickness and / or Young ratio of the face increases the flexibility of the face, thereby the repulsion coefficient of the club head. And increasing the repulsion coefficient of the club head of a golf club, which is essentially a measure of the efficiency of energy transfer from the club head to the golf ball, increases the distance the golf ball travels after impact and golf. The spin of the ball may be reduced and / or the ball speed of the golf ball may be increased.

However, thinning the face of the club head can allow mass from the face to be redistributed to other parts of the club head, and while the face can be more flexible, the face of the club head. When thinned, the bending in the face may increase to the point where it buckles and breaks. Therefore, there is a need for devices and methods to prevent the club head face from buckling when the club head face is thinned.

The following drawings are provided to facilitate further description of the embodiments.

It is a top surface, a rear surface, and a toe side view of a club head according to one embodiment. It is a top surface, front surface, and heel side view of the club head according to the embodiment of FIG. It is a figure of the conventional club head by one Embodiment. In the partial cross-sectional view of the conventional club head along the cutting line 4-4 of FIG. 3 according to the embodiment of FIG. 3, the face surface of the conventional club head impacts a golf ball (not shown). Is a diagram showing a state of stress strain analysis in which the resulting bending is tripled. FIG. 5 is a cross-sectional view taken along the cutting line 5-5 of FIG. 2 of the club head according to the embodiment of FIG. It is a top surface, a rear surface, and a toe side view of a club head according to one embodiment. FIG. 6 is a top, front, and toe side view of the club head according to the embodiment of FIG. It is a side view along the cutting line 5-5 of FIG. 2 of the club head according to another embodiment of FIG. FIG. 8 is a side view of the upper surface, the rear surface, and the heel of the club head according to the embodiment of FIG. It is a flowchart about one Embodiment of the method of providing a golf club head. FIG. 10 is a diagram illustrating an exemplary task of providing a reinforced device according to the embodiment of FIG. It is a figure regarding one Embodiment of the layer of the vibration damping characteristic part. It is a side view along the cutting line 5-5 of FIG. 2 of the club head according to the embodiment of FIG. It is a front view of the golf club by one Embodiment. It is the upper surface and the rear view of the club head by one Embodiment. FIG. 15 is a cross-sectional view of the club head along the cutting line 6-6 of FIG. 15 according to the embodiment of FIG. It is sectional drawing of the club head by another embodiment. It is sectional drawing of the club head by another embodiment. FIG. 18A is an enlarged view of a cross-sectional view of a club head according to an embodiment of FIG. 18A. It is sectional drawing of the club head by another embodiment. It is a rear view of the club head according to the embodiment of FIG. It is a front view of the club head according to the embodiment of FIG.

For the sake of brevity and clarity, the drawings provide a comprehensive view of the structure and, in order to avoid unnecessarily obscuring the present disclosure, provide description and details of well-known features and techniques. It may be omitted. Moreover, the elements of the drawing do not necessarily reflect the actual scale. For example, the dimensions of some elements in the drawings may be exaggerated relative to other elements to clarify embodiments of the invention. The same reference numerals in different drawings indicate the same elements.

Terms such as "first", "second", "third", and "fourth" in the specification and claims are used to distinguish similar elements and are not necessarily in a particular order. Or it does not indicate a time series. The terms used in this way are interchangeable under appropriate circumstances, for example, the embodiments described herein are in an order other than those illustrated or otherwise described herein. It will be understood that it may be executed in. Furthermore, "contains", "haves" and this inflection are intended for non-exclusive inclusion, and a process, method, system, article, device, or device with a list of elements does not necessarily include these elements. It may include, but is not limited to, elements not explicitly listed or other elements specific to such processes, methods, systems, articles, devices, or equipment.

Terms such as "left", "right", "front", "rear", "top", "bottom", "top", "bottom" in the specification and claims are for illustration purposes and are not necessarily used. It does not describe a permanent relative position. These terms are interchangeable under appropriate circumstances, and embodiments of devices, methods, and / or articles described herein are, for example, in a different orientation than exemplified or described herein. It will be understood that it can work.

Terms such as "concatenated," "concatenated," "concatenated," and "concatenated" should be broadly understood, and two or more elements may be mechanically and / or otherwise concatenated. Refers to connecting. Two or more mechanical elements can be mechanically connected without being electrically or otherwise connected. The concatenation may be of any length of time, eg permanent or semi-permanent, or momentary only.

"Mechanical concatenation" etc. should be broadly interpreted and includes all kinds of mechanical concatenation.

The lack of words such as "removable" and "removable" near words such as "link" does not mean that the bond, etc. of interest is removable or non-removable. ..

Some embodiments have a golf club head. Golf club heads have a bottom end on the opposite side of the top and top edges, a rear end on the opposite side of the front and front ends, and a heel end on the opposite side of the toe and toe ends. And. In addition, the golf club head comprises a face element. The face element comprises a face surface located at the front end, and the face surface comprises a face center and a face periphery. Further, the face element is located at the rear end portion and includes a rear surface substantially opposite to the face surface, and the rear surface includes a rear center and a rear peripheral edge portion substantially opposite to the face center. Furthermore, the golf club head is equipped with a reinforcement device located on the rear surface. In these embodiments, the x-axis extends substantially parallel to the face surface and passes through the posterior center, the y-axis extends substantially parallel to the face surface and extends approximately perpendicular to the x-axis. Passing through the posterior center, the z-axis extends substantially perpendicular to the face surface, extends substantially perpendicular to the x-axis and y-axis, and intersects the posterior center. Further, the x-axis extends through the toe and heel ends and equidistant from the top and bottom ends, and the y-axis extends through the top and bottom ends and toes. Extending equidistant from the ends and heel ends, the z-axis passes through the front and rear ends, and (i) from the toe and heel ends, and (ii) with the top. It extends equidistant from the rear end. Further in these embodiments, the reinforcement device comprises a reinforcement element having a geometric center located approximately on the z-axis, the reinforcement element extending from the rear surface to the rear end and away from the front end. , Reinforcing elements include looped ribs. On the other hand, the face surface can be closer to the posterior surface proximal to the center of the face than proximal to the peripheral edge of the face.

Another embodiment has a golf club head. In some embodiments, the golf club head comprises an iron type golf club head. Golf club heads have a bottom end on the opposite side of the top and top edges, a rear end on the opposite side of the front and front ends, and a heel end on the opposite side of the toe and toe ends. And. In addition, the golf club head comprises a face element. The face element comprises a face surface located at the front end, and the face surface comprises a face center and a face periphery. Further, the face element is located at the rear end portion and includes a rear surface substantially opposite to the face surface, and the rear surface includes a rear center and a rear peripheral edge portion substantially opposite to the face center. Furthermore, the golf club head is equipped with a reinforcement device located on the rear surface. And further, the golf club head comprises (i) a peripheral wall element extending from the rear surface toward the rear end and away from the front end, and (ii) extending all around the peripheral edge of the rear surface. .. The peripheral wall element includes a first peripheral wall portion extending along the posterior peripheral edge of the rear surface at the upper end and a second peripheral wall portion extending along the posterior peripheral edge of the rear surface at the bottom end. Be prepared. In these embodiments, the x-axis extends substantially parallel to the face surface and passes through the posterior center, the y-axis extends substantially parallel to the face surface and extends approximately perpendicular to the x-axis. Passing through the posterior center, the z-axis extends substantially perpendicular to the face surface, extends substantially perpendicular to the x-axis and y-axis, and intersects the posterior center. Further, the x-axis extends through the toe and heel ends and equidistant from the top and bottom ends, and the y-axis extends through the top and bottom ends and toes. Extending equidistant from the end and heel ends, the z-axis passes through the front and rear ends, and (i) between the toe and heel ends, and (ii) the top. It extends equidistantly from the portion and the rear end. Further in these embodiments, the reinforcement device comprises a reinforcement element with a geometric center located approximately on the z-axis, the reinforcement element extending from the rear surface to the rear end and away from the front end. The reinforcing element comprises a closed circular loop rib. Further, the golf club head includes an iron type golf club head, the center thickness from the center of the face to the rear center is about 0.203 cm or less, and at least a part of the second peripheral wall portion is formed. Thinner than the face element proximal to the face periphery.

Some embodiments further have an insert that at least partially fills the cavity of the reinforcing element formed by the looped ribs. In some embodiments, the cavity can be a central cavity. Also, the central cavity can be partially covered by the badge. The badge may be separated from the insert or integrated with the insert. In other embodiments, the badge can be integrated with the reinforcement element. The insert can be a lightweight material weighing less than about 3 g and may not significantly affect the center of gravity of the swing of the golf club head. In an alternative embodiment, the insert can weigh more than about 3 g, such as about 5 g to about 10 g, and can contribute to the swing weight or center of gravity of the club head.

A further embodiment has vibration damping features disposed on the rear surface of the golf club head to reduce noise, produce more desirable sounds, and reduce vibration of the golf club head. The vibration damping feature can be made of other material or composition of vibration damping or vibration removing properties such as damping foil, rubber, or pressure sensitive viscoelastic acrylic polymer. The vibration damping feature can be pressure sensitive, resulting in reduction or elimination of vibration from the golf club head when the golf ball is hit. The vibration damping feature provides the golf club head with a more desirable sound in combination with obtaining better performance in a golf club head with a thin face. The vibration damping feature is applied at least partially to the rear surface of the golf club head. Vibration damping features can also be applied to stiffening elements. The vibration damping feature can also be applied to all or part of the cavity of the reinforcement element. The cavity can be a central cavity. The central cavity on the rear surface can also be partially covered by vibration damping features. The central cavity can also be partially covered by the badge, and the vibration damping feature can be disposed under the badge.

Further embodiments include a method of providing a golf club head. The method is (i) a face surface located at the front end and having a face center and a face peripheral edge, and (ii) a rear surface located at the rear end and substantially opposite to the face surface. It can include providing a face element with a posterior center and a posterior surface having a posterior margin approximately opposite the center, and providing a reinforced device on the posterior surface. In these embodiments, the golf club head has a bottom end on the opposite side of the upper end and the upper end, a rear end on the opposite side of the front end and the front end, and the opposite of the toe end and the toe end. It has a heel end on the side. Further, the x-axis extends substantially parallel to the face surface and passes through the posterior center, and the y-axis extends approximately parallel to the face surface and extends approximately perpendicular to the x-axis and passes through the posterior center. The z-axis extends substantially perpendicular to the face surface, extends substantially perpendicular to the x-axis and y-axis, and passes through the posterior center. Furthermore, the x-axis extends through the toe and heel ends and equidistant from the top and bottom ends, and the y-axis extends through the top and bottom ends and It extends equidistantly from the toe and heel ends, and the z-axis passes through the front and rear ends, and (i) from the toe and heel ends, and (ii) the upper end. It extends equidistantly from the rear end. On the other hand, the reinforcement device comprises a reinforcement element having a geometric center located approximately on the z-axis, the reinforcement element extending from the rear surface toward the rear end and away from the front end, and the reinforcement element ... It has a loop-shaped rib. Also, the face surface can be closer to the posterior surface in the proximal part of the center of the face than in the proximal part of the peripheral edge of the face.

Some embodiments have golf clubs. The golf club comprises a shaft and a golf club head coupled to the shaft. Golf club heads have a bottom end on the opposite side of the top and top edges, a rear end on the opposite side of the front and front ends, and a heel end on the opposite side of the toe and toe ends. And. In addition, the golf club head comprises a face element. The face element is located at the front end and comprises a face surface including a face center and a face periphery. Further, the face element includes a rear surface located at the rear end portion and substantially opposite to the face surface, a rear center on the substantially opposite side of the face center, and a rear surface including a rear peripheral edge portion. Furthermore, the golf club head is equipped with a reinforcement device located on the rear surface. In these embodiments, the x-axis extends substantially parallel to the face surface and passes through the posterior center, the y-axis extends substantially parallel to the face surface and extends approximately perpendicular to the x-axis. It passes through the posterior center, with the z-axis extending approximately perpendicular to the face surface, extending approximately perpendicular to the x-axis and y-axis, and passing through the posterior center. Further, the x-axis extends through the toe and heel ends and equidistant from the top and bottom ends, and the y-axis extends through the top and bottom ends and toes. It extends equidistantly from the ends and heel ends, and the z-axis passes through the front and rear ends, and (i) from the toe and heel ends, and (ii) the upper end. It extends equidistant from the rear end. Further in these embodiments, the reinforcement device comprises a reinforcement element having a geometric center located approximately on the z-axis, with the reinforcement element extending outward from the rear surface towards the rear end and away from the front end. An existing, reinforcing element is provided with looped ribs. On the other hand, the face surface can be closer to the posterior surface in the proximal part of the center of the face than in the proximal part of the peripheral edge of the face.

Moving to the drawing, FIG. 1 shows an upper surface, a rear surface, and a toe side view of the club head 100 according to one embodiment. On the other hand, FIG. 2 shows an upper surface, a front surface, and a side view of the heel of the club head 100 according to the embodiment of FIG. The club head 100 is merely an example and is not limited to the embodiments presented herein. The club head 100 can be used in many different embodiments or examples not explicitly illustrated or described herein.

Generally, the club head 100 can include a golf club head. The golf club head 100 can be a portion of the corresponding golf club. For example, the golf club 1400 (FIG. 14) can include a golf club head 100 coupled to a shaft 1490 and a grip 1495. Further, the golf club head can be part of a set of golf club heads and / or the golf club can be part of a set of golf clubs. For example, the club head 100 can be equipped with any suitable iron type golf club head. In some embodiments, the club head 100 may include a muscle back iron type golf club head or a cavity back iron type golf club head. Nevertheless, although the club head 100 is generally described with respect to an iron type golf club head, the club head 100 may be, for example, a wood type golf club head (for example, a driver club head, a fairway wood club head, a hybrid club head, etc.). ) Or any other suitable type of golf club head, such as a putter golf club head. In general, the club head 100 may contain any suitable material, but in many embodiments, the club head 100 comprises one or more metallic materials. Despite the above, the devices, methods, and products described herein are not limited in this regard.

As shown for reference, the club head 100 is on the opposite side of the top end 101 and the bottom end 102, front end 203 (FIG. 2) and front end 203 (FIG. 2) opposite the top edge 101. It comprises an end 104 and a toe end 105 and a heel end 106 opposite the toe end 105. Further, the club head 100 includes an x-axis 107, a y-axis 108, and a z-axis 109.

On the other hand, the x-axis 107, the y-axis 108, and the z-axis 109 form a Cartesian reference coordinate system of the club head 100. Therefore, the x-axis 107, the y-axis 108, and the z-axis 109 are perpendicular to each other. Further, the x-axis 107 extends through the toe end 105 and the heel end 106 and is equidistant between the upper end 101 and the bottom end 102, and the y-axis 108 is the upper end 101. And extending through the bottom end 102 and equidistant between the toe end 105 and the heel end 106, the z-axis 109 connects the front end 203 (FIG. 2) and the rear end 104. It extends through and is equidistant between (i) the toe end 105 and the heel end 106, and (ii) the upper end 101 and the rear end 102.

The club head 100 includes a club head main body 110. The club head body 110 may be solid, hollow, or partially hollow. When the club head body 110 is hollow and / or partially hollow, the club head body 110 can comprise a shell structure and is further filled and / or partially filled with a filling material different from the material of the shell structure. Can be done. For example, the filling material can include plastic foam.

The club head body 110 includes a face element 111 and a strengthening device 112. In many embodiments, the club head body 110 may include a peripheral wall element 113.

In many embodiments, the face element 111 comprises a face surface 214 (FIG. 2) and a rear surface 115. On the other hand, the face surface 214 (FIG. 2) includes a face center 216 (FIG. 2) and a face peripheral edge portion 217 (FIG. 2), and the rear surface 115 includes a rear center 118 and a rear peripheral edge portion 119. The face surface 214 (FIG. 2) can refer to the hitting face or hitting plate of the club head 100 and may be configured to impact a ball (not shown), such as a golf ball. In many embodiments, the face surface 214 (FIG. 2) can include one or more scoring lines 223 (FIG. 2).

In these or other embodiments, the face surface 214 (FIG. 2) can be located at the front end 203 (FIG. 2) and the rear surface 115 can be located at the rear end 104. Further, the rear surface 115 can be substantially opposite to the face surface 214 (FIG. 2), the rear center 118 can be substantially opposite to the face center 216 (FIG. 2), and the rear peripheral edge portion 119. Can be on the substantially opposite side of the face peripheral edge 217 (FIG. 2). In general, in many examples, the face center 216 (FIG. 2) can refer to the geometric center of the face surface 214 (FIG. 2). Thus, in these or other examples, the face center 216 (FIG. 2) is approximately equidistant between the toe end 105 and the heel end 106 on the face surface 214 (FIG. 2), and further. It can refer to a position that is approximately equidistant between the upper end portion 101 and the bottom end portion 102. In various examples, the face center is incorporated herein by reference, United States Golf Association: Procedure for Measurement the Flexibility of a Golf Clubhead, USGA-TPX3004, pp. 1, 0.08. Refers to the face center defined on May 1, 2014 (acquired from http: //www.usga.org/equipment/testing/protocols/Test-Protocols-For-Equipment on May 12, 2014). Can be done. Similarly, in some examples, the posterior center 118 can refer to the geometric center of the posterior surface 115.

As a reference, the x-axis 107 and y-axis 108 can extend substantially parallel to the face surface 214 (FIG. 2) and the z-axis 109 extends approximately perpendicular to the face surface 214 (FIG. 2). can do. On the other hand, each of the x-axis 107, the y-axis 108, and the z-axis 109 is rear so that the rear center 118 has the origin of the Cartesian frame of reference formed by the x-axis 107, the y-axis 108, and the z-axis 109. Can intersect the center 118.

In various embodiments, the scoring line 223 (FIG. 2) can each include one or more grooves and can extend between the toe end 105 and the heel end 106. In these or other embodiments, the scoring line 223 (FIG. 2) can be substantially parallel to the x-axis 107.

In many embodiments, the strengthening device 112 comprises one or more strengthening elements 120 (eg, strengthening element 121). The reinforcing device 112 and / or the reinforcing element 120 is located at the rear surface 115 and extends outward from the rear surface 115 toward the rear end 104 and away from the front end 203 (FIG. 2). In many embodiments, each reinforcing element of the reinforcing element 120 comprises an outer peripheral surface and a geometric center. In these or other embodiments, the geometric center of one or more of the reinforcement elements 120 (eg, reinforcement element 121) can be located approximately at the z-axis 109. For example, the reinforcing element 121 may include an outer peripheral surface 126 and a geometric center 130.

The strengthening device 112 and the strengthening element 120 reinforce the face element 111 while allowing the face element 111 to bend, for example, when the face surface 214 (FIG. 2) impacts a ball (eg, a golf ball). It is configured as follows. As a result, the face element 111 is thinned so that the mass from the face element 111 can be redistributed to other parts of the club head, but also the face element 111 becomes more flexible. However, it cannot buckle and break under the resulting flexion. Advantageously, the face element 111 can be thinner when mounted with the strengthening device 112 and the strengthening element 120 than when mounted without the strengthening device 112 and the strengthening element 120, and thus the club head 100. The center of gravity, moment of inertia, and coefficient of restitution of the club head 100 can be modified to improve the performance characteristics of the club head 100. For example, when the strengthening device 112 and the strengthening element 120 are mounted, the launch angle of the golf ball is increased (for example, about 1/10 degree to 3/10 degree) to hit the face surface 214 (FIG. 2). The flight distance of the golf ball can be increased, and the ball speed of the golf ball can be increased, for example, by about 0.1 mile / h (mph) (0.161 km / h (kph) to about 3.0 mph (4.83 mph)). And / or the spin of the golf ball is reduced (eg, approximately 1-500 revolutions per minute). In these examples, the strengthening device 112 and the strengthening element 120 can have some effect of counteracting gearing on the golf ball given by the face surface 214 (FIG. 2).

A test of a golf club with one embodiment of the golf club head 100 was performed. Overall, when compared to iron golf clubs with standard reinforced striking faces and custom tuning ports, tests have shown that the moment of inertia is higher around the x-axis and / or y-axis, and that the golf ball is a golf club. Greater forgiveness was shown, as indicated by the smaller statistical area hitting the face of the head. In some tests, the moment of inertia around the x-axis is increased by approximately 2%, the moment of inertia around the y-axis is increased by approximately 4%, and / or the statistical area where the golf ball hits the face of the golf club head. However, it decreased by about 15 to 50%. In addition, an increase in the ball speed of the golf ball, an increase in the launch angle of the golf ball, and / or a decrease in the spin of the golf ball were observed. As an example, when a test of one embodiment of the golf club 100 is performed on a 5 iron golf club, the ball speed of the golf ball is increased by about 1.5 mph (2.41 kW) and the launch angle of the golf ball is about. It was seen that the golf ball increased by 0.3 degrees and the spin of the golf ball decreased by about 250 revolutions per minute (rpm). In another example, when testing one embodiment of the golf club 100 on a 7 iron golf club, the ball speed of the golf ball is increased by approximately 2.0 mph (3.22 mph) and the launch angle of the golf ball is increased. There was almost no change in the frequency, and it was found that the spin of the golf ball was reduced by about 450 rpm. As a further example, when a test of one embodiment of the golf club 100 is performed on a wedge iron golf club, the ball speed of the golf ball has almost no change in speed, and the launch angle of the golf ball is increased by about 0.1 degree. , The spin of the golf ball was found to be reduced by approximately 200 rpm.

In particular, in many examples, FIGS. 3 and 4 when the face element 111 comprises a scoring line 223 (FIG. 2) and the face element 111 is thinned without mounting the reinforcement device 112 and the reinforcement element 120. And as described below with respect to FIGS. 3 and 4, buckling and breakage of the face element 111 scores, especially at the scoring line 223 (FIG. 2) proximal to the face center 216 (FIG. 2). It may occur at the bottom of the ring line 223.

The club head 100 with the reinforced device 112 can also have a uniform transition thickness 550 (FIG. 5) extending from the front end 203 to the bottom end 102. The uniform transition thickness 550 absorbs stress directed to the region between the front end 203 and the bottom end 102 of the club head 100 having the strengthening device 112. The uniform transition thickness 550 can range from approximately 0.20 to 0.80 inches. For example, a uniform transition thickness of 550 is approximately 0.20, 0.25, 0.30, 0.35 0.40, 0.45, 0.50, 0.55, 0.60, 0.65, It can be 0.70, 0.75, or 0.80 inches.

Specifically, going ahead with the drawings, FIG. 3 shows a conventional club head 300 according to one embodiment. The club head 300 may be similar to the club head 100 (FIGS. 1 and 2), but unlike the club head 100, the club head 300 has a reinforced device and a reinforced element on the rear surface 315 of the face element 311 of the club head 300. There is no. The club head 300 includes one or more scoring lines 323 on the face surface 314 of the club head 300. The rear surface 315 may resemble the rear surface 115 (FIG. 1), the face element 311 may resemble or be identical to the face element 111 (FIG. 1), and the face surface 314 may resemble the face surface 214 (FIG. 1). It may be similar to or identical to 2), and / or the scoring line 323 may be similar to or identical to the scoring line 223 (FIG. 2). Further, the absent reinforced device may resemble the reinforced device 112 (FIG. 1), and the absent reinforced element may resemble the reinforced element 120 (FIG. 1). On the other hand, in FIG. 4, the face surface 314 of the club head 300 impacts the golf ball (not shown) in the partial cross-sectional view of the club head 300 along the cutting line 4-4 of FIG. 3 according to the embodiment of FIG. The state of stress strain analysis is shown in which the resulting bending is tripled.

As demonstrated in FIG. 4, the face element 311 behaves like a support beam and thus comprises a neutral axis 436. The portion of the face element 311 between the face surface 314 and the neutral shaft 436 is in a compressed state, and the portion of the face element 311 between the neutral shaft 436 and the rear surface 315 is in a tensile state. The stress first increases at the face surface 314 and the rear surface 315 and moves inward towards the neutral axis 436. However, unlike the support beam, the face element 311 also includes a scoring line 323 in the compressed state of the face element 311. Excessive bending of the face element 311 can lead to mechanical yielding of the face element 311 at the bottom of the scoring line 323. Without the scoring line 323, the face element 311 would normally first be expected to break within the tensioned portion of the face element 311, but the scoring line 323 would first be in the compressed state of the face element 311. Causes damage at some point. That is, after the face element 311 breaks at the scoring line 323, the rest of the face element 311 may reach a stress level high enough to cause the break. Iron-type club heads may be more susceptible to damage at the scoring line 323. This is because the iron type club head tends to be flat on the face surface 314, unlike the wood type golf club head which tends to be convex on the face surface 314. As a result, even if the wood-type golf club head bends at the face surface 314, the face surface 314 may still be curved somewhat outward. On the other hand, when the iron type golf club head bends at the face surface 314, the face surface 314 bends in a concave shape, which increases the degree of compression at the compressed portion of the face element 311. There is.

Returning to FIGS. 1 and 2, when the strengthening device 112 and the strengthening element 120 are mounted, they are close to the face center 216 (FIG. 2) in the scoring line 223 (FIG. 2), especially in the scoring line 223. Local flexion within the position scoring line may be enhanced, as well as increased overall flexion within the face element 111. The strengthening device 112 and the strengthening element 120 increase these benefits by increasing the local thickness of the face element 111, whereby the face element 111 is stiffer and harder in their position. ) By becoming, it is possible to bring. In fact, the strengthening device 112 and the strengthening element 120 can serve to pull the neutral axis of the face element 111 away from the face surface 214 (FIG. 2) and closer to the rear surface 115.

On the other hand, the strengthening device 112 and the strengthening element 120 can further bring these benefits when implemented as a closed structure (eg, one or more looped ribs). This is because such a closed structure is capable of withstanding deformation as a result of circumferential (ie hoop) stress acting on the strengthening device 112 and the strengthening element 120. For example, the circumferential (ie, hoop) stress acting on the strengthening device 112 and the strengthening element 120 prevents the opposing sides of the strengthening device 112 and the strengthening element 120 from rotating away from each other, thereby reducing bending. obtain.

Further, the reinforced device 112 and the reinforced element 120 absorb a substantial portion of the stress on the club head 100 at impact so that the stress is clubs such as the face element 111, the face surface 214, and the rear surface 115 at impact. Prevent it from being absorbed by other parts of the head 100. Directing stress in the direction of the reinforcement device 112 and the reinforcement element 120 is compared to the club head 300 lacking the reinforcement device and the reinforcement element, or compared to the club head having the reinforcement device 112 without or less reinforcement element 120. Thus, the durability of the face element 111 and the club head 100 is improved.

Upon mounting, the reinforcement element 120 (eg, reinforcement element 121) is configured to perform the desired function of the reinforcement device 112 and / or the reinforcement element 120 described above, in any suitable shape (eg, poly). It can be implemented in any suitable configuration (square, oval, circular, etc.) and / or. Further, when the strengthening element 120 comprises a plurality of strengthening elements, two or more strengthening elements of the strengthening element 120 may resemble another and / or two or more of the strengthening elements 120. The element can be different from another.

In some embodiments, the reinforcing element 120 (eg, the reinforcing element 121) can be symmetrical about the x-axis 107 and / or the y-axis 108. When the reinforcing element 120 (eg, the reinforcing element 121) is mounted in an oblong shape, in many embodiments the maximum dimension of the reinforcing element (eg, the major axis) is parallel to one of the x-axis 107 or the y-axis 108 and / Or can be a collinear line. However, in other embodiments, the maximum dimension (eg, major axis) can be angled with respect to x-axis 107 and / or y-axis 108 as desired. Further, in many embodiments, the strengthening element 120 (eg, strengthening element 121) may be centered on the z-axis 109, but in some embodiments, one or more of the strengthening elements 120 (eg, strengthening). The element 121) is unevenly distributed off the center of the z-axis 109, for example, unevenly distributed toward one or two of the upper end 101, the bottom end 102, the toe end 105, and the heel end 106. Can be done.

In many embodiments, each reinforcing element of the reinforcing element 120 (eg, the reinforcing element 121) can include one or more looped ribs 127 (eg, looped ribs 122). Specifically, the reinforcing element 121 can include a loop-shaped rib 122. In these or other embodiments, if the loop rib 127 comprises a plurality of loop ribs, the loop ribs 127 can be concentric with each other around a point and / or axis (eg, z-axis 109). .. In another embodiment, if the loop ribs 127 include a plurality of loop ribs, then two or more of the loop ribs 127 can be non-concentric. Moreover, in these or other embodiments, two or more of the looped ribs 127 can overlap. On the other hand, in these embodiments, the loop rib 122 can include an elliptical loop rib, and in some of these embodiments, the loop rib 122 can include a circular loop rib. As mentioned above, mounting the reinforcing element 120 as a loop rib 127 can be advantageous due to the circumferential (eg hoop) stress provided by the closed structure of the loop rib 127. In many embodiments, one or more of the looped ribs 127 (or each of the looped ribs 127) is a continuous closed loop.

In these or other embodiments, each looped rib of the looped rib 127 comprises an outer peripheral surface and an inner peripheral surface. On the other hand, in these embodiments, the outer peripheral surface of each reinforcing element (for example, the reinforcing element 121) is provided with the outer peripheral surface of the loop-shaped rib (for example, the loop-shaped rib 122) corresponding to the reinforcing element. For example, the loop rib 122 can include an outer peripheral surface 128 and an inner peripheral surface 129. Further, the inner peripheral surface 129 can be steep and substantially orthogonal to the rear surface at a rib height of 540 (FIG. 13).

In some embodiments, one or more outer peripheral surfaces of the reinforcing element 120 (eg, the outer peripheral surface 126 of the reinforcing element 121) may be filled with respect to the rear surface 115. In these or other embodiments, one or more inner peripheral surfaces of the loop rib 127 (eg, the inner peripheral surface 129 of the loop rib 122) may be filled with respect to the posterior surface 115. When the outer peripheral surface of the reinforcing element 120 (for example, the outer peripheral surface 126 of the reinforcing element 121) is fleshed against the rear surface 115, a smooth transition of the reinforcing element 120 (for example, the outer peripheral surface 126 of the reinforcing element 121) to the rear surface 115 is performed. Can be possible. Further, fleshing the outer peripheral surface of the reinforcing element 120 (for example, the outer peripheral surface 126 of the reinforcing element 121) with respect to the rear surface 115 directs the stress from the impact to the reinforcing element 120 and from the face surface 214. Can be separated. On the other hand, the outer peripheral surface of the reinforcing element (for example, the outer peripheral surface 126 of the reinforcing element 121) or the inner peripheral surface of the loop rib 127 (for example, the inner peripheral surface 129 of the loop rib 122) is approximately 0.012 cm. Fillet 117 with a radius of metric or greater can be used to fill the back surface 115. For example, in some embodiments, the fillet 117 of the outer peripheral surface 126 with respect to the posterior surface 115 is approximately 0.012 cm to approximately 2.0 cm, approximately 0.50 cm to approximately 3.0 cm, Or it can range from about 1.0 centimeters to about 4.0 centimeters. In the case of a further example, in some embodiments, the fillet 117 of the inner peripheral surface 129 with respect to the posterior surface 115 is approximately 0.012 cm to approximately 2.0 cm, and approximately 0.50 cm to approximately 3.0. It can be in the range of centimeters, or from about 1.0 centimeters to about 4.0 centimeters.

In some embodiments, the outer peripheral surface of the reinforcing element can be fleshed directly to the posterior surface 115. In these embodiments, the face thickness gradually decreases along the fillet 117 from the face thickness at the rib height 540 to the face thickness at the rear surface 115.

In some embodiments, the club head 100 may further include a lip portion 552 on the rear surface 115 of the club head 100. Referring to FIGS. 15-17, in the illustrated embodiment, the lip portion 552 extends from the heel end 106 to the toe end 105 around the reinforcing element 120 of the club head 100. In these or other embodiments, the fillet 117 on the outer peripheral surface of the reinforcing element 120 can migrate to the lip portion 552 so that the face thickness is minimal from the face thickness at rib height 540. Gradually decreases along the fillet 117 to a thickness of 544 and then gradually increases from a minimum thickness of 544 to a face thickness at lip height 554. In these embodiments, the minimum thickness 544 between the reinforcing element 120 and the lip portion 552 can be greater than the central thickness 537, and the minimum thickness 544 between the reinforcing element 120 and the lip portion 552 is. , Can be approximately equal to the center thickness 537, or the minimum thickness 544 between the reinforcing element 120 and the lip portion 552 can be less than the center thickness 537. In the embodiments shown in FIGS. 15-16, the minimum thickness 544 between the reinforcing element 120 and the lip portion 552 is greater than the central thickness 537. In the embodiment shown in FIG. 17, the minimum thickness 544 between the reinforcing element 120 and the lip portion 552 is approximately equal to the center thickness 537.

In many embodiments, the minimum thickness 544 between the reinforcing element 120 and the lip portion 552 corresponds to the flexion of the faceplate and the ball velocity. As the minimum thickness 544 between the reinforcing element 120 and the lip portion 552 decreases, the outer peripheral surface of the reinforcing element 120 may further bend during impact with the golf ball. The increased bending of the outer peripheral surface of the reinforcing element 120 at impact can increase the deflection of the faceplate, increase the energy transfer to the golf ball, and increase the ball velocity. For example, the golf club head 100 shown in FIG. 17, which has a minimum thickness of 544 between the reinforcement element 120 and the lip portion 552 that is approximately equal to the center thickness 537, has the reinforcement element 120 and the lip portion that are larger than the center thickness 537. It produces ball velocities up to 1 mile per hour (mph) faster than the club head 100 shown in FIGS. 15-16 with a minimum thickness of 544 between 552.

In some embodiments, if the reinforcing element 121 comprises a loop rib 122, the loop rib 122 may comprise a cavity 131. In another embodiment, when the reinforcing element 121 comprises a loop rib 122, the loop rib 122 does not include a cavity 131. In embodiments without cavities 131, the central thickness 537 (FIGS. 5 and 13) can be made larger than in embodiments with cavities 131, from the face surface 214 (FIG. 2) to the looped ribs 122. At rib height 542 (FIG. 5 and 13), which can be measured to the distal end (eg, the combined distance of center thickness 537 (FIG. 5) and rib height 542 (FIG. 5)). It can be less than or equal to the face thickness of. The cavity 131 is defined by an inner peripheral surface 129 and a rear surface 115. In some embodiments, the cavity 131 can be a central cavity. In many embodiments, the cavity 131 can be free of any content, such as weighted inserts. In another embodiment, the cavity 131 can accommodate the insert 805, as shown in FIGS. 8 and 9.

As discussed in some detail above, by mounting the strengthening device 112 and the strengthening element 120, the face surface 214 (FIG. 2) is proximal to the face margin 217 (FIG. 2) (eg, the face margin 217). Can be closer (ie, thinner) to the posterior surface 115 than in the proximal part of the face center 216 (eg, at the face center 216). In some embodiments, the portion of the face surface 214 (FIG. 2) proximal to the face center 216 (FIG. 2) borders the surface area of the face surface 214 with the face center 216 (FIG. 2). And it can refer to a portion representing approximately 1%, 2%, 3%, 5%, 10%, or 20% of the total surface area of the face surface 214. In these or other embodiments, that portion of the surface area of the face surface 214 (FIG. 2) can correspond to the portion of the surface area of the rear face 115 that is covered by the reinforcing element 121. On the other hand, in some embodiments, the portions of the face surface 214 (FIG. 2) proximal to the face peripheral portion 217 (FIG. 2) are the face peripheral portion 217 and the face peripheral portion 217 of the face surface 214 (FIG. 2). Inserted boundaries located approximately 0.10 cm, 0.20 cm, 0.25 cm, 0.50 cm, 1.00 cm, or 2.00 cm from Figure 2) Can refer to the area surrounded by and.

Going forward for a short time, FIGS. 5 and 13 show a cross-sectional view of the club head 100 according to the embodiment of FIG. 1 along the cutting line 5-5 of FIG. The club head 100 can have a central thickness of 537. The center thickness 537 can refer to the distance from the face center 216 (FIG. 2) to the rear center 118 (FIG. 1). In many embodiments, the central thickness 537 can be from about 0.150 cm to about 0.300 cm. In some embodiments, the central thickness 537 can be less than 0.300 cm, less than 0.255 cm, less than 0.250 cm, less than 0.205 cm, less than 0.200 cm, or less than 0.155 cm. In some embodiments, the center of the reinforcing element 120 may be at least partially filled. For example, the center of the reinforcing element 120 may be filled with a damping material or vibration damping feature (eg, insert 805 (FIG. 8)), or other material. In many embodiments, the center thickness 537 can be thinner than the face thickness at rib height 540. In another embodiment, the center thickness 537 can be approximately equal to the face thickness at rib height 540. The face thickness at the rib height 540 may be the rib height 540 added to the center thickness 537. In many embodiments, the outer face thickness 542 of the reinforcing element 120 is thicker than the center thickness 537, but can be thinner than the face thickness at the rib height 540. In other embodiments, the face thickness 542 may be the same as the center thickness 537.

In some embodiments, the face thickness at rib height 540 can be from about 0.30 cm to about 0.70 cm. In some embodiments, the face thickness at rib height 540 can be from about 0.30 cm to about 0.50 cm. In some embodiments, the face thickness at rib height 540 can be from about 0.40 cm to about 0.60 cm. In some embodiments, the face thickness at rib height 540 can be from about 0.50 cm to about 0.70 cm. In some embodiments, the face thickness at rib height 540 can be greater than 0.30 cm, greater than 0.40 cm, greater than 0.50 cm, or greater than 0.60 cm.

In some embodiments, the outer face thickness 542 of the reinforcing element 120 can vary. 15-16 show a top 545 of the outer faceplate of the reinforcement element 120 with a top thickness 546 and a bottom 547 of the outer faceplate of the reinforcement element 120 with a bottom thickness 548. .. In some embodiments, the top thickness 546 may be the same as the bottom thickness 548 (FIGS. 5 and 13). In these embodiments, the center thickness 537 can be thinner than the top thickness 546 and the bottom thickness 548, and the top thickness 546 and the bottom thickness 548 are greater than the face thickness at the rib height 540. Can be thinned. In some embodiments, the top thickness 546 may differ from the bottom thickness 548 (FIGS. 15-16). For example, in some embodiments, the center thickness 537 can be thinner than the top thickness 546, the top thickness 546 can be thinner than the bottom thickness 548, and the bottom thickness 548. Can be thinner than the face thickness at rib height 540. For further examples, in some embodiments, the top thickness 546 can be thinner than the center thickness 537, the center thickness 537 can be thinner than the bottom thickness 548, and the bottom thickness. The 548 can be made thinner than the face thickness 540 at the rib height 540.

In many embodiments, the outer face thickness 542 of the reinforcing element 120 can be from about 0.150 cm to about 0.300 cm. In some embodiments, the outer face thickness 542 of the reinforcing element 120 is less than 0.300 cm, less than 0.255 cm, less than 0.250 cm, less than 0.205 cm, less than 0.200 cm, or less than 0.155 cm. can do. In many embodiments, the top thickness 546 can be from about 0.150 cm to about 0.300 cm. In some embodiments, the top thickness 546 can be less than 0.300 cm, less than 0.255 cm, less than 0.250 cm, less than 0.205 cm, less than 0.200 cm, or less than 0.155 cm. In many embodiments, the bottom thickness 548 can be from about 0.150 cm to about 0.300 cm. In some embodiments, the bottom thickness 548 can be less than 0.300 cm, less than 0.255 cm, less than 0.250 cm, less than 0.205 cm, less than 0.200 cm, or less than 0.155 cm.

In many embodiments, the outer face thickness of the reinforcing element 120, without the need for a backing material to support (eg, without the use of a filling material such as an elastomer located at the back of the faceplate). The 542 can be from about 0.150 cm to about 0.300 cm, and the center thickness 537 can be from about 0.150 cm to about 0.300 cm. For example, the outer face thickness 542 of the reinforcing element 120 does not have an elastomer or other flexible material located at the back of the outer face thickness 542 of the reinforcing element 120, from about 0.150 cm to about 0. It can be 300 cm. In another example, the center thickness 537 can be from about 0.150 cm to about 0.300 cm without having an elastomer or other flexible material located at the back of the face center thickness 537.

Generally, the face plate of a golf club head is designed to maximize ball velocity for individual swing velocity requirements (eg, by reducing the face plate thickness). In general, the impact force with a club head decreases with swing speed, so faceplate thickness (eg, for women's golf club heads compared to men's golf club heads) has a lower swing speed. Can be reduced according to durability requirements. For example, a club head with a low swing speed durability requirement has a lower center thickness of 537, a lower face thickness at a rib height of 540, and a lower top compared to a club head with a higher swing speed durability requirement. It can have a thickness of 546, a low bottom thickness of 548, or any combination of thickness reductions mentioned above. In some embodiments, the central thickness 537 can be from about 0.150 cm to about 0.250 cm, the top thickness 546 can be from about 0.150 cm to about 0.250 cm, and also. The bottom thickness 548 can be from about 0.150 cm to about 0.250 cm and the club head 100 is less than 100 miles per hour (mph) (160.9 kilometers per hour, kph), 90 mph (144.8 kph). It makes it possible to withstand swing speeds of less than, less than 80 mph (128.7 mph), less than 70 mph (112.6 mph), or less than 60 mph (96.6 mph). In some embodiments, the center thickness 537 can be from about 0.200 cm to about 0.300 cm, the top thickness 546 can be from about 0.200 cm to about 0.300 cm, and also. The bottom thickness 548 can be from about 0.200 cm to about 0.300 cm and the club head 100 is less than 130 mph (209.2 mph), less than 120 mph (193.1 mph), less than 110 mph (177.0 mph). It makes it possible to withstand swing speeds of less than 100 mph (160.9 kph) or less than 90 mph (144.8 kph).

In many embodiments, the scoring line 223 can have a depth of from about 0.030 cm to about 0.060 cm. In some embodiments, the scoring line 223 may have a depth of less than 0.060 cm, less than 0.055 cm, less than 0.050 cm, less than 0.045 cm, less than 0.040 cm, or less than 0.035 cm. can. For example, in the embodiments shown in FIGS. 15-16, the scoring line 223 has a depth of approximately 0.046 cm. As used herein, measurements for center thickness 537, outer face thickness 542 of reinforcement element 120, top thickness 546, and bottom thickness 548 are made in the area of the face plate without scoring lines. .. Therefore, the faceplate thickness measured within the scoring line 223 is greater than the associated faceplate thickness measured outside the scoring line 223 within the same region of the faceplate or next to the scoring line 223. , Lowers (depending on the depth of the scoring line).

In some embodiments, the width of the ribs can vary across the looped ribs 122 (FIG. 1), and in some embodiments the looped ribs 122 (FIG. 1) and / or the inner peripheral surface 129. FIG. 1 can include a maximum rib span of 538. The maximum rib span 538 is the maximum distance measured in parallel with the rear surface 115 (FIG. 1) from one side of the inner peripheral surface 129 (FIG. 1) to the opposite side of the opposite inner peripheral surface 129 (FIG. 1). Can be pointed out. Therefore, when the loop-shaped rib 122 (FIG. 1) includes an elliptical loop-shaped rib, the maximum rib span 538 can refer to the long axis of the inner peripheral surface surface 129 (FIG. 1). Further, when the loop rib 122 (FIG. 1) includes a circular loop rib, the maximum rib span 538 can refer to the diameter of the inner peripheral surface 129 (FIG. 1). In particular, in many embodiments, the maximum rib span 538 can be measured at the midpoint of the inner peripheral surface 129 (FIG. 1).

In some embodiments, the maximum rib span 538 can be from about 0.609 cm to about 1.88 cm. In some embodiments, the maximum rib span 538 can be approximately 1.0 cm. In some embodiments, if the maximum span 538 is too large (eg, greater than approximately 1.88 cm), the looped rib 122 (FIG. 1) scores closest to the face center 216 (FIG. 2). It can be inadequate to reinforce the ring line 223 (FIG. 2). On the other hand, in these or other embodiments, if the maximum span 538 is too small (eg, less than about 0.609 cm), the looped rib 122 will score closest to the face periphery 217 (FIG. 2). It can be inadequate to reinforce line 223 (FIG. 2). In general, these upper and lower bounds for the maximum rib span 538 can be a function of the size of face element 111 (FIG. 1). In some embodiments, there may be more than one ribs 621 and 641, for example as shown in FIG. In this case, the inner or outer diameter of the larger rib span or rib 641 (FIG. 6) can be larger than 1.88 cm and the inner or outer diameter of the smaller rib span or rib 621 (FIG. 6). The diameter can be less than 0.609 centimeters.

Further, the loop rib 122 (FIG. 1) can be provided with a rib thickness of 539. The rib thickness 539 is the rear surface 115 (FIG. 1) between the inner peripheral edge surface 129 (FIG. 1) of the loop-shaped rib 122 (FIG. 1) and the outer peripheral edge surface 128 (FIG. 1) of the loop-shaped rib 122 (FIG. 1). It can refer to the distance measured in parallel with FIG. 1). In some embodiments, the thickness of the looped rib 122 (FIG. 1) can vary over the entire looped rib 122 (FIG. 1), and the rib thickness 539 is that of the looped rib 122 (FIG. 1). It can be the maximum rib thickness. In many embodiments, the rib thickness 539 can be from about 0.050 cm to about 1.50 cm. In some embodiments, the rib thickness 539 can be approximately 0.05 cm. In some embodiments, the rib thickness 539 can be approximately 0.25 centimeters or more. In some embodiments, the rib thickness 539 can be approximately 0.50 centimeters. In some embodiments, the rib thickness 539 can be approximately 0.75 centimeters. In some embodiments, the rib thickness 539 can be approximately 1.00 centimeters. In some embodiments, the rib thickness 539 can be approximately 1.25 centimeters. In some embodiments, the rib thickness 539 can be approximately 1.50 centimeters. In various embodiments, if the loop rib 127 (FIG. 1) comprises a plurality of loop ribs, then two or more loop ribs of the loop rib 127 (FIG. 1) have the same rib thickness. And / or two or more looped ribs of the looped ribs 127 (FIG. 1) can have different rib thicknesses. In particular, in many embodiments, the rib span 539 can be measured at the midpoint of the inner peripheral surface 129 (FIG. 1) and / or the outer peripheral surface 128 (FIG. 1).

Furthermore, the loop rib 122 (FIG. 1) can be provided with a rib height of 540. The rib height 540 is the center position farthest from the rear surface 115 (FIG. 1) to the loop-shaped rib 122 (FIG. 1), that is, the outer peripheral surface surface 128 (FIG. 1) is the inner peripheral surface surface 129 (FIG. 1). It can refer to the vertical distance to the point where it touches. In these or other embodiments, the rib height 540 can be approximately 0.3048 centimeters or more. In some embodiments, the rib height 540 can be from about 0.1778 cm to about 0.3048 cm. In some embodiments, the rib height 540 can be approximately 0.17 cm, 0.20 cm, 0.23 cm, 0.26 cm, 0.29 cm, or 0.30 cm. In many embodiments, the rib height 540 can be approximately 0.512 cm or less. In some embodiments, the height of the looped rib 122 (FIG. 1) can vary over the entire looped rib 122, where the rib height 540 is the maximum rib height of the looped rib 122 (FIG. 1). can do. In various embodiments, when the loop rib 127 (FIG. 1) comprises a plurality of loop ribs, two or more loop ribs of the loop rib 127 (FIG. 1) have the same rib height. And / or two or more looped ribs of the looped ribs 127 (FIG. 1) can have different rib heights.

In many embodiments, the center thickness 537, maximum rib span 538, rib thickness 539, and / or rib height 540 may vary depending on one or more of each other. For example, the center thickness 537 can be a function of rib thickness 539 and rib height 540. That is, if the rib thickness 539 and / or the rib height 540 is increased, the center thickness 537 can be reduced and vice versa. On the other hand, the rib thickness 539 and the rib height 540 may vary from each other. For example, increasing the rib thickness 539 may allow the rib height to be reduced and vice versa.

Returning to FIGS. 1 and 2, in many embodiments, the peripheral wall element 113 can include a first peripheral wall portion 124 and a second peripheral wall portion 125. Peripheral wall elements 113 are (i) at least partially around the posterior peripheral edge 119 of the posterior surface 115 (eg, all around it), (ii) outward from the posterior surface 115 towards the posterior end 104, and (iii). ) Extends away from the front end 203 (FIG. 2). On the other hand, the first peripheral wall portion 124 can extend along the rear peripheral edge portion 119 of the rear surface 115 at the upper end portion 101, and the second peripheral edge wall portion 125 can extend behind the rear surface 115 at the bottom end portion 102. It can extend along the peripheral edge 119. In many embodiments, the reinforced device 112 and the reinforced element 120 are separated from and / or from the peripheral wall element 113 at the rear surface 115 such that the reinforced device 112 and the reinforced element 120 float on the rear surface 115. Located apart. Floating the strengthening device 112 and the strengthening element 120 may allow the face element 111 to flex substantially symmetrically around the face center 216 (FIG. 2).

In many embodiments, the club head body 110 is (i) at least partially a top surface 132 at a first peripheral wall 124 and / or an upper end 101, and / or (ii) at least partially a second. The peripheral wall portion 125 and / or the sole surface 133 at the bottom end portion 102 can be provided. Thus, in some embodiments, the first peripheral wall portion 124 can form at least a portion of the top surface 132, and / or the second peripheral wall portion 125 is at least a portion of the sole surface 133. Can be configured. Further, the upper surface 132 can be in contact with the face surface 214 (FIG. 2) at the upper end 101, and / or the sole surface 133 can be in contact with the face surface 214 (FIG. 2) at the bottom end 102.

In some embodiments, at least a portion of the second peripheral wall 125 is approximately equal in thickness to the face element 111 at and / or proximal to the face peripheral 217 at the face peripheral 217 (FIG. 2). Or it can be thinner than that. For example, the second peripheral wall portion 125 is a portion of the second peripheral wall portion 125 proximal to the face peripheral portion 217 (FIG. 2) (that is, where the second peripheral wall portion 125 is in contact with the face element 111). ), The thickness may be equal to or thinner than that of the face element 111 proximal to and / or the face periphery 217 of the face periphery 217. This portion of the second peripheral wall 125 is mounted to be as thick as or thinner than the face element 111 proximal to and / or the face peripheral 217 of the face peripheral 217 (FIG. 2). Then, when the face surface 214 (FIG. 2) impacts the golf ball, it is possible to prevent the stress concentration portion from being formed on the second peripheral wall portion 125.

The rear surface 115 includes a first rear surface portion and a second rear surface portion. The first rear surface portion can refer to the portion of the rear surface 115 covered by the peripheral wall element 113, and the second rear surface portion can refer to the remaining portion of the rear surface 115. In many embodiments, the reinforcing element 121 (eg, loop rib 122) is approximately 25 percent or more of the surface area of the second posterior surface of the posterior surface 115 and / or approximately 40 percent of the surface area of the second posterior surface of the posterior surface 115. Can cover less than a percentage. In another embodiment, the reinforcing element 121 (eg, loop rib 122) can cover approximately 30 percent or more of the surface area of the second rear surface of the rear surface 115. In some embodiments, the reinforcing element 121 (eg, looped rib 122) accounts for approximately 25 percent, 28 percent, 31 percent, 34 percent, 37 percent, or 40 percent of the surface area of the second posterior portion of the posterior surface 115. Can be covered.

Further, the club head body 110 may be provided with a hosel 134 or any other suitable mechanism (eg, a bore) for receiving the shaft and coupling it to the club head 100 and / or the club head body 100. .. Other suitable mechanisms may resemble the hosel 134 in one or more respects.

On the other hand, generally speaking, the hosel 134 can be located at or near the heel end 106. Although the shaft is not shown in the drawings, the hosel 134 may be configured to receive a shaft (ie, through the opening of the hosel 134), such as a golf club shaft. Thus, the hosel 134 is capable of receiving the shaft, and when the hosel 134 receives the shaft, the shaft is coupled (eg, permanently or detachably) to the club head 100 and / or the club head body 110. Can be made possible.

Further, in some embodiments, the second peripheral wall portion 125 can include a weight cavity 135. In these embodiments, the weight cavity 135 may be configured to receive a removable or permanent weighted insert. The weighted insert may be placed in the weight cavity 135 such that the weighted insert is located closer to the bottom end 102 of the club head 100 than the center of gravity of the club head 100. In other words, the weighted insert may be positioned within the weight cavity 135 such that the center of gravity of the club head 100 is closer to the upper end 101 of the club head 100 than the weighted insert. The weighted insert may be configured to change the center of gravity of the club head 100.

Going forward with the drawings, FIG. 6 shows an upper surface, a rear surface, and a toe side view of the club head 600 according to one embodiment. On the other hand, FIG. 7 shows an upper surface, a front surface, and a toe side view of the club head 600 according to the embodiment of FIG.

The club head 600 may be similar to or identical to the club head 100 (FIG. 1). Therefore, the club head 600 can be equipped with the strengthening device 612, and the strengthening device 612 can be provided with the strengthening element 620. The strengthening device 612 may be similar to or identical to the strengthening device 112 (FIG. 1), and the strengthening element 620 may be similar to or identical to the strengthening element 120 (FIG. 1).

The reinforcement element 620 can include a first reinforcement element 621 and a second reinforcement element 641. The first reinforcement element 621 and / or the second reinforcement element 641 may each resemble the first reinforcement element 121 (FIG. 1). Therefore, the first reinforcing element 621 can include a first loop-shaped rib 622, and the second reinforcing element 641 can include a second loop-shaped rib 642. The first looped rib 622 and / or the second looped rib 642 may resemble the looped rib 122 (FIG. 1), respectively.

In these embodiments, the first reinforcing element 621 and / or the first looped rib 622 can comprise a circular looped rib, the second reinforcing element 622 and / or the second looped rib 642. However, it can be provided with an elliptical loop-shaped rib. The second reinforcing element 622 and / or the second looped rib 642 can surround the first reinforcing element 621 and / or the first looped rib 622. In many embodiments, the long axis of the elliptical loop rib can be substantially parallel to the x-axis of the club head 600. The x-axis may be close to or identical to the x-axis 107 (FIG. 1). In the same or different embodiment, the minor axis of the elliptical loop rib can be non-parallel to the y-axis of the club head 600. The y-axis may be close to or identical to the y-axis 108 (FIG. 1).

The club head 600 with the reinforced device 612 can also have a uniform transition thickness 550 (not shown) extending from the front end 203 to the bottom end 102. The uniform transition thickness 550 absorbs stress directed to the region between the front end 203 and the bottom end 102 of the club head 600 having the reinforced device 612. The uniform transition thickness 550 can range from approximately 0.20 to 0.80 inches. For example, a uniform transition thickness of 550 is approximately 0.20, 0.25, 0.30, 0.35, 0.40, 0.45, 0.50, 0.55, 0.60, 0.65. , 0.70, 0.75, or 0.80 inch.

In another embodiment, FIG. 8 shows a side view of the club head 800 according to another embodiment of FIG. 1 along the cutting line 5-5 of FIG. The club head 800 shown in FIG. 8 shows an insert 805 in the cavity 131. FIG. 9 shows a side view of the upper surface, the rear surface, and the heel of the club head 800 according to the embodiment of FIG. In some embodiments, the insert 805 can be a vibration damping feature. The insert 805 can be a non-metallic material, an elastomeric material such as polyurethane, or another material such as a foam. The insert 805 can be used to adjust the sound and feel of the club head 800. By absorbing or damping vibrations, the insert 805 enhances the feel of the club head 800. In addition, the insert 805 absorbs the sound of the golf ball hitting the face, thereby making the feel of the head of the golf club 800 less hollow and more solid. In a further embodiment, the cavity 131 can be at least partially covered by a badge (not shown). The badge may be separated from the insert 805 or integrated with the insert 805. In other embodiments, the badge can be integrated with a reinforcement element such as the reinforcement element 120 (FIG. 1).

In some cases, the weight of the insert 805 can be less than about 3 g so as not to significantly affect the swing weight or center of gravity of the club head 800. In other embodiments, the weight of the insert 805 may be greater than about 3 g, such as from about 5 g to about 10 g, which can contribute significantly to the swing weight and / or center of gravity of the club head 800. In some embodiments, the insert 805 adheres to the cavity 131 using epoxy adhesive, viscoelastic foam tape, vibration damping features, or high-strength tape such as 3M VHB (TM) tape. Can be done. In another embodiment, the insert 805 can be poured directly into the cavity 131 and adhered. Badges can be glued using similar adhesives. In some embodiments, the insert 805 or badge may be coplanar with the looped rib 122 (FIG. 1) at the top of the rib height 540, or when they are fully assembled, the ribs. It may be below the height of 540.

In some embodiments, at least one vibration damping feature, such as an insert 805 (FIG. 8), may be disposed on the rear surface 115 (FIG. 1) of a golf club head, such as the golf club head 800. The vibration damping feature can produce a more desirable sound from the golf club head 800 at impact. The thin face element 111 (FIG. 1) of the golf club head 800 can generate unwanted sounds when hitting a golf ball. The vibration damping feature reduces vibration, which can result in a more desirable sound at impact by the thin face element 111 (FIG. 1). Vibration damping components can increase user confidence in use by providing more desirable noise. The vibration damping feature can also reduce the vibration impact that a golf club user feels when hitting a golf ball. Further, the vibration damping feature can reduce vibration fatigue and reduce wear on the golf club 800 and various features such as, but not limited to, the cavity 131 and the weight cavity 135 (FIG. 1). The reduction in vibration fatigue can further reduce the risk of loosening or displacement of components such as, but not limited to, the insert 805 of the cavity 131 and the insert in the weight cavity 135 (FIG. 1). If the vibration fatigue is reduced, the performance life of the golf club head 800 may be extended.

As seen in FIG. 12, in a further embodiment, the vibration damping feature may include at least one layer of viscoelastic damping material. The damping material can include a pressure sensitive viscoelastic acrylic polymer and an aluminum foil forming a damping foil 1202 such as 3M ™ damping foil tape 2552. The damping foil 1202 can include an adhesive layer. In one embodiment, the vibration damping feature can comprise at least one viscoelastic adhesive layer 1203, which is an epoxy adhesive, viscoelastic foam tape, and / or 3M ™ VHB ™. ) It can be provided with a composition consisting of various layers of at least one layer of a high-strength tape such as a tape. In some embodiments, the vibration damping feature can include various layer combinations of at least one of viscoelastic adhesive 1203, damping foil 1202, and / or badge 1201.

Returning to FIG. 8, in some embodiments, the vibration damping feature may be disposed on the rear surface 115 (FIG. 1) of a golf club head, such as the golf club head 800, which comprises a rear surface material such as steel 1204. .. In another embodiment, the vibration damping feature may be disposed within the cavity 131 of the golf club head 800 or above or below the insert 805. The vibration damping feature can be located at various positions on the rear surface 115 (FIG. 1) of the golf club head 800. Generally, the vibration damping feature is located at least partially on the rear surface 115 (FIG. 1) under the contour of the badge. In some embodiments, the vibration damping feature is disposed below the entire contour of the badge. In another embodiment, the vibration damping feature is at least partially disposed below a specific region, such as an aluminum region or an elastomer region, of the badge's contour. The vibration damping feature may be disposed only below at least a portion of the peripheral region of the badge contour. In some embodiments, the vibration damping feature may be at least partially disposed within the cavity 131 of the golf club head 800. The vibration damping feature may be at least partially disposed above or below the insert 805 within the cavity 131. In many embodiments, the placement of the vibration damping feature on the golf club head 800 is such that the foil is at least partially under the badge and at least partially above the insert 805 (FIG. 1). ) At least partially and / or at least partially within the cavity 131. In some embodiments, the vibration damping feature is arranged such that it covers at least 10 percent of the surface area of the rear surface 115 (FIG. 1). In another embodiment, the vibration damping feature is at least 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, of the surface area of the rear surface 115. It can cover 95, or 100%.

The club head 800 with the insert 805 can also have a uniform transition thickness 550 (FIG. 8) extending from the front end 203 to the bottom end 102. The uniform transition thickness 550 absorbs stress directed to the region of the club head 800 with the insert 805 between the front end 203 and the bottom end 102. The uniform transition thickness 550 can range from approximately 0.20 to 0.80 inches. For example, a uniform transition thickness of 550 is approximately 0.20, 0.25, 0.30, 0.35, 0.40, 0.45, 0.50, 0.55, 0.60, 0.65. , 0.70, 0.75, or 0.80 inch.

In another embodiment, FIG. 18A is a side sectional view of the club head 900. The club head 900 may be similar to the club head 100. The club head 900 includes a club head body 910 comprising an upper end 901, a bottom end 902, a toe end 905, a heel end 906, a front end 903, a rear end 904, and a face element 911. The face element 911 comprises a face surface 914 (ie, striking face or striking plate) located on the front end portion 903 and a rear surface 915 located on the rear end portion 904. The rear surface 915 includes a rear center 918.

The upper end 901 of the club head body 910 includes a top rail 924. The top rail 924 extends in an arc shape from the front end portion 903 toward the rear end portion 904 and the bottom end portion 902. The top rail 924 extends from the toe end 905 to the heel end 906 along the upper end 901. A recess in the curve located between the rear surface 915 of the face element 911 and the top rail 924 defines the undercut 950. In many embodiments, the undercut 950 extends from the toe end 905 to the heel end 906 along the top rail 924. In another embodiment, the undercut 950 is along the top rail 924 and into a portion of the toe end 905, into a portion of the heel end 906, or a portion of the toe end 905 and the heel. It can extend into a combination of parts of the ends 906. The undercut 950 can also be applied to the club heads 300, 600, and 800.

The face element 911 further comprises a strengthening device 912 similar to the strengthening devices 112, 612. The reinforced device 912 is generally located on the posterior surface 915 at the posterior center 918. The reinforced device 912 extends from the rear surface 915, away from the front end 903. The strengthening device 912 comprises one or more strengthening elements 920. In many embodiments, each of the reinforcing elements 920 comprises an outer peripheral surface 926, an inner peripheral surface 929, and a geometric center. The reinforcing element 920 can further include a loop rib 927. In these or other embodiments, the geometric center of one or more of the reinforcing elements 920 can be at the posterior center 918 of the posterior surface 915.

In some embodiments, the looped ribs 927 may include a plurality of looped ribs, each of which may be concentric with each other. In another embodiment, when the loop rib 927 comprises a plurality of loop ribs, two or more of the loop ribs 927 may be non-concentric. Further, in these or other embodiments, two or more of the looped ribs 927 may overlap. On the other hand, in some embodiments, the loop rib 927 may comprise an elliptical loop rib, and in other embodiments, the loop rib 927 may comprise a circular loop rib.

Upon mounting, the reinforcement element 920 and the looped rib 927 are configured to perform the intended function of the reinforcement device 912 and / or the reinforcement element 920 described above, in any suitable shape (eg, many). It can be implemented in any suitable configuration (square, oval, circular, etc.) and / or. Further, when the reinforcement element 920 comprises a plurality of reinforcement elements, the two or more reinforcement elements of the reinforcement element 920 may resemble another and / or two of the reinforcement elements 1520. The above strengthening elements may be different from others.

In some embodiments, the outer peripheral surface 926 of one or more reinforcement elements 920 may be filled with respect to the posterior surface 915. In these or other embodiments, the inner peripheral surface 929 of the loop rib 927 may be filled with respect to the posterior surface 915. Filling the outer peripheral surface 926 of the reinforcing element 920 with respect to the rear surface 915 may enable a smooth transition of the reinforcing element 920 to the rear surface 915. Further, by fleshing out the outer peripheral surface surface 926 of the reinforcing element 920 with respect to the rear surface 915, the stress from the impact can be directed to the reinforcing element 920 and separated from the face surface 914. On the other hand, the outer peripheral edge surface 926 of the reinforcing element 920 or the inner peripheral edge surface 929 of the loop-shaped rib 927 can be filled with respect to the rear surface 915 using a fillet 923 having a radius of about 0.012 cm or more. .. For example, in some embodiments, the fillet 923 of the outer peripheral surface 926 relative to the posterior surface 915 is about 0.012 cm to about 2.0 cm, about 0.50 cm to about 3.0 cm, Alternatively, it can range from about 1.0 centimeters to about 4.0 centimeters. In the case of a further example, in some embodiments, the fillet 923 of the inner peripheral surface 929 relative to the posterior surface 915 is about 0.012 cm to about 2.0 cm and about 0.50 cm to about 3.0. It can be in the range of centimeters, or about 1.0 centimeters to about 4.0 centimeters.

In some embodiments, the outer peripheral surface 926 of the reinforcing element 920 can be fleshed directly to the posterior surface 915. In these embodiments, the face thickness gradually decreases along the fillet 923 from the face thickness at the apex of the reinforcing element 920 to the face thickness at the rear surface 915.

In some embodiments, the club head 900 may further include, on the rear surface 915 of the club head 900, a lip portion (not shown) similar to the lip portion 552 described above and of FIGS. 9-17. The lip portion of the club head 900 can extend from the heel end 906 to the toe end 905 around the reinforcement element 920 of the club head 900. In these or other embodiments, the fillet 923 above the outer peripheral surface 926 of the reinforcing element 920 can migrate to the lip portion. Therefore, the face thickness gradually decreases along the fillet 923 from the apex of the reinforcing element 920 to the minimum thickness between the lip portion and the reinforcing element 920, and then from the minimum thickness to the lip portion. Gradually increase to the top. In these embodiments, the minimum thickness between the reinforcing element 920 and the lip portion can be greater than the thickness at the face center 916, and the minimum thickness between the reinforcing element 920 and the lip portion is the face center. It can be approximately equal to the thickness at 916, or the minimum thickness between the reinforcing element 920 and the lip can be less than the thickness at the center of the face 916.

The bottom end 902 of the club head body 910 can further comprise a sole 961. The sole 961 comprises an inner sole surface 962. Further, the sole 961 may be a feature within the club heads 300, 600, and 800. As illustrated in FIGS. 18A and 18B, there is an internal radius transition portion 963 from the rear surface 915 of the face element 911 to the inner sole surface 962. The radius transition portion 963 may include a smooth transition or cascading sole 955 in close proximity to the rear surface 915 of the face element 911. As illustrated in FIG. 18B, the cascading sole 955 can include a first tier 959 and a second tier 960. The first tier 959 is proximal to the front end 903, the second tier 960 is proximal to the rear end 904, and the first tier 959 transitions to the second tier 960. Further, the first tier 959 has a thickness greater than the thickness of the second tier 960. Further details of the cascading sole 955 are disclosed in US Patent Application No. 14 / 920,280 on Golf Club Heads with Energy Storage Characteristics.

The undercut 950 increases the structural integrity of the face element 911 of the club head 900. More specifically, the position of the undercut allows for a larger distribution area of stress experienced by the face element 911 at the upper end 901 during impact with the ball, the stress moving along the top rail 924. .. The distribution of stress in the top rail of the upper end 901 can prevent permanent deformation of the face element 911. Maintaining the structural integrity of the face element 911 allows the club head body 910 to produce consistent and optimal performance characteristics and feel, with performance (ie, ball velocity, ball trajectory) over time. And does not deteriorate after multiple uses.

In addition, an undercut 950 located directly behind the front end 903 above the top 901 allows the face element 911 to have greater deflection during impact. The deflection of the face element 911 affects the coefficient of restitution (COR) of the club head 900. COR measures the elasticity of an object at the time of a collision and is the ratio of the final relative velocity of the object to the initial relative velocity of the object. A higher COR results in an increased ball velocity and distance, and a lower COR results in a decreased ball velocity and distance. Therefore, the undercut 950 of the club head 900 affects the distance and velocity of the ball after impact. The undercut 950 increases the deflection of the face element 911, which in turn increases the distance and velocity of the ball.

In addition, the undercut 950 allows mass removal from the upper end 901 of the club head. The removed mass can then be redistributed to other locations on the club head (eg, bottom end 902, toe end 905, heel end 906, or any combination thereof). Mass redistribution provides a club head with higher performance characteristics such as increased moment of inertia (MOI) and ideal center of gravity (CG) design. The increased MOI and ideal CG design can result in increased ball velocity and prevent the club head 900 from rotating from the toe end 905 to the heel end 906 during the swing. Preventing the club head 900 from rotating from the toe end 905 to the heel end 906 allows for better contact of the ball and a more ideal trajectory of the ball (ie, a straight trajectory).

As previously described, the strengthening device 912 and the strengthening element 920 reinforce the face element 911 while allowing the face element 911 to bend, for example, when the face surface 914 impacts a golf ball. It is configured as follows. As a result, the face element 911 allows the mass from the face element 911 to be redistributed to the rest of the club head 900, allowing the face element 911 to be more unbuckled and broken under the resulting bending. The face element 911 can be thinned so that it can be made flexible. Advantageously, the face element 911 can be thinner when mounted with the reinforcement device 912 and the reinforcement element 920, so that the center of gravity, moment of inertia, and coefficient of restitution of the club head 900 are the performance characteristics of the club head 900. Can be modified to improve. For example, when the strengthening device 912 and the strengthening element 920 are mounted, golf hit on the face surface 914 by increasing the firing angle, increasing the ball velocity, and / or reducing the spin of the golf ball. The flight distance of the ball can be increased. In these examples, the strengthening device 912 and the strengthening element 920 can have some effect of canceling the gearing against the golf ball provided by the face surface 914.

The reinforcing device 912 and the reinforcing element 920 can further provide the benefit of reducing stress when mounted as a closed structure (ie, looped ribs 927). This is because such a closed structure is capable of withstanding deformation as a result of circumferential (ie, hoop) stress acting on the strengthening device 912 and the strengthening element 920. For example, the circumferential (ie, hoop) stress acting on the strengthening device 912 and the strengthening element 920 prevents the opposing sides of the strengthening device 912 and the strengthening element 920 from rotating away from each other, thereby reducing bending. obtain.

The cascading sole 955 allows some of the stress experienced by the face element 911 near the sole 961 to be distributed to the first tier 959 and the second tier 960. The distribution of stress by the first tier 959 and the second tier 960 of the cascading sole 955 prevents the stress from concentrating primarily on the thinnest section of the face element 911 near the sole 961. The distribution of stress by the first tier 959 and the second tier 960 in the sole 961 can prevent permanent deformation and maintain the structural integrity of the face element 911. Thus, the face element 911 can produce more consistent performance and feel after multiple impacts with the ball.

19-21 illustrate other embodiments of the club head 1500. 19 is a side sectional view of the club head 1500, FIG. 20 is a rear perspective view of the club head 1500, and FIG. 21 is a front view of the club head 1500. The club head 1500 includes a club head main body 1510. As illustrated in FIG. 19, the club head body 1510 can resemble the club head bodies 110 and 910, and the club head body 1510 has an upper end 1501 and a bottom end opposite the upper end 1501. It comprises 1502, a front end 1503, a rear end 1504 opposite the front end 1503, a toe end 1505, a heel end 1506 opposite the toe end 1505, and a face element 1511. The toe end is further divided into a first toe end portion 1505A, a second toe end portion 1505B, and a third toe end portion 1505C. The first toe end portion 1505A is located adjacent to the upper end portion 1501 and is integrally molded with the upper end portion 1501. The third toe end portion 1505C is located adjacent to the bottom end portion 1502 and is integrally molded with the bottom end portion 1502. The second toe end portion 1505B is located between the first toe end portion 1505A and the third toe end portion 1505C.

The club head 1500 further comprises a hosel 1521. The hosel 1521 is integrally molded with the club head body 1510. As illustrated in FIGS. 20 and 21, dotted lines AA represent the junction between the hosel 1521 and the club head body 1510, as the face element 1511 transitions from a flat surface to a curve. The club head body 1510 ends and the hosel 1521 begins.

In many embodiments, the face element 1511 of the club head body 1510 has a face surface 1514 positioned on the front end 1503 and a rear surface 1515 positioned on the rear end 1504 opposite the face surface 1514. To prepare for. The face surface 1514 can point to the hitting face or hitting plate of the club head 1500 and is configured to impact a golf ball (not shown). The face surface 1514 includes a face center 1516 located substantially at the center of the face surface 1514, and a face peripheral edge portion 1517 along the periphery of the face surface 1514. The face peripheral edge portion 1517 abuts on the dotted line AA at the heel end portion 1506 of the club head body 1510. The rear surface 1515 of the face element 1511 includes a rear center 1518 on the opposite side of the face center 1516 and a rear peripheral portion 1519 on the opposite side of the face peripheral edge 1517. The rear peripheral edge portion 1519 abuts on the dotted line AA at the heel end portion 1506 of the club head body 1510.

FIG. 19 illustrates the rear end 1504 of the club head body 1510. Several cavities can be formed between the posterior surface 1515 and some posterior wall structures described in more detail below along the periphery of the face element 1511. In many embodiments, these cavities are integral with each other and connect together to form a 360 degree undercut between the posterior surface 1515 and some posterior wall structures. Some rear wall structures are formed from an upper end 1501, a bottom end 1502, a toe end 1505, and a heel end 1506 of the club head body 1510. In other embodiments, some of the cavities are integral with each other and can be connected together, and the other cavities are structures (eg, ribs, ledges, walls, or). , Any other separating type of structure). In many embodiments, the club head body 1510 with the formed cavity can further comprise a reinforced device 1512 (as described in more detail below). In another embodiment, the golf club head with the formed cavity can be without the strengthening device 1512.

(Club head with undercut)
As illustrated in FIGS. 19 and 20, the upper end 1501 of the club head body 1510 comprises a top rail 1507. The top rail 1507 extends in an arc toward the rear end portion 1504 and the bottom end portion 1502 to form the top rail wall portion 1513. The curvature of the top rail wall portion 1513 covers a portion of the rear surface 1515, and a first cavity 1541 is formed between the rear surface 1515 and the top rail wall portion 1513. The top rail wall portion 1513 can extend from the heel end 1506 to the toe end 1505. Similarly, the first cavity 1541 at the upper end 1501 can extend from the heel end 1506 to the toe end 1505. The top rail wall portion 1513 can cover about 10% to 22% of the rear surface 1515. For example, the top rail wall portion 1513 can cover about 10%, 12%, 14%, 16%, 18%, 20%, or 22% of the rear surface 1515. In some embodiments, the top rail wall portion 1513 can cover approximately 18% of the rear surface 1515. The percentage coverage of the rear surface 1515 by the top rail wall portion 1513 is related to the first depth 1531 of the first cavity 1541.

As illustrated in FIG. 19, the first depth 1531 of the first cavity 1541 is parallel to the face surface 1514 from the opening of the first cavity 1541 to the rear peripheral edge 1519 at the top of the top rail 1507. Is measured in. The first depth 1531 may be a consistent depth or may vary along the first cavity 1541. The first depth 1531 of the first cavity 1541 on the top rail 1507 can range from about 0.115 inches to 0.135 inches. For example, the first depth 1531 of the first cavity 1541 is about 0.115 inches, 0.117 inches, 0.119 inches, 0.121 inches, 0.123 inches, 0.0125 inches, 0.127. It can be inches, 0.129 inches, 0.131 inches, 0.133 inches, or 0.135 inches. In some embodiments, the first depth 1531 is about 0.125 inches.

The bottom end 1502 of the club head body 1510 comprises a sole 1508. The sole 1508 is integrally formed with the rear portion 1509. The rear portion 1509 extends upward toward the upper end portion 1501 over a portion of the rear surface 1515. The posterior upward extension of the posterior portion 1509 covering the posterior surface 1515 forms a second cavity 1542 between the posterior surface 1515 and the posterior portion 1509. The rear portion 1509 can extend from the heel end 1506 to the toe end 1505. Similarly, the second cavity 1542 between the posterior surface 1515 and the posterior portion can extend from the heel end 1506 to the toe end 1505. The rear portion 1509 can cover about 30% to 55% of the rear surface 1515. For example, the posterior portion 1509 can cover about 30%, 35%, 40%, 45%, 50%, or 55% of the posterior surface 1515. In some embodiments, the posterior portion 1509 extending upward towards the upper end 1501 can cover about 45% of the posterior surface 1515. The percentage coverage of the rear portion 1509 covering the rear surface 1515 is related to the second depth 1532 of the second cavity 1542.

As illustrated in FIG. 19, the second depth 1532 of the second cavity 1542 is parallel to the face surface 1514 from the opening of the second cavity 1542 to the posterior peripheral edge 1519 at the bottom of the sole 1508. Be measured. The second depth 1532 may be a consistent depth or may vary along the second cavity 1542. The second depth 1532 of the second cavity 1542 can range from about 0.460 inches to 0.580 inches. For example, the second depth 1532 may be about 0.460 inches, 0.480 inches, 0.500 inches, 0.520 inches, 0.540 inches, 0.560 inches, or 0.580 inches. Can be done. In some embodiments, the second depth 1532 of the second cavity 1542 can be about 0.500 inches.

As illustrated in FIG. 20, at the toe end 1505 of the club head body 1510, the turage portion 1526 curves and extends toward the top rail 1507, the sole 1508, and the heel end 1506. Can be done. The turage portion 1526 extends from the upper end portion 1501 toward the bottom end portion 1502. The turage portion is integrally formed with the rear portion 1509 of the sole 1508 and the top rail wall portion 1513 of the top rail 1507. More specifically, the turage portion 1526 at the first toe end portion 1505A is adjacent to the top rail 1507 and is integrally formed with the top rail 1507, and the turage portion at the third toe end portion 1505C. The portion 1526 is adjacent to the rear portion 1509 and is formed integrally with the rear portion 1509. The turage portion 1526 extending towards the top rail 1507 and the heel end portion 1506 can form a third cavity 1543 between the rear surface 1515 and the turage portion 1526 in the first toe end portion 1505A. The third cavity 1543 is adjacent to the first cavity 1541 on the top rail 1507 and can be integrated with the first cavity 1541. Below the third cavity 1543, a fourth cavity 1544 can be further formed between the rear surface 1515 and the turage portion 1526 at the second toe end portion 1505B. The fourth cavity 1544 is adjacent to the second cavity 1542 in the sole 1508 and can be integrated with the second cavity 1542.

The turage portion 1526 can cover a part of the rear surface 1515. More specifically, the turage portion 1526 in the first toe end portion 1505A can cover about 7% to 15% of the rear surface 1515. For example, the turage portion 1526 in the first toe end portion 1505A can cover about 7%, 9%, 11%, 13%, or 15% of the rear surface 1515. In some embodiments, the turage portion 1526 at the first toe end portion 1505A covers about 9% of the posterior surface 1515. The percentage coverage of the tow end portion 1526 is the largest and most prominent at the first toe end portion 1505A. Similarly, the third depth 1533 (more specifically described below) of the third cavity 1543 associated with the percent coverage of the turage portion 1526 at the first toe end portion 1505A is also very prominent. .. The percentage coverage by the toured portion at the first end is more pronounced, which can help increase the top / toe weighting and improve the moment of inertia. The percentage coverage of the tow end portion 1505A at the first toe end portion 1505A is decreasing towards the second toe end portion 1505B and the percentage coverage of the turage portion 1526 at the second toe end portion 1505B. Is the smallest of the two.

As illustrated in FIG. 20, the third cavity 1543 at the toe end 1505 adjacent to the top rail 1507 includes a third depth 1533. The third depth 1533 is measured parallel to the face surface 1514 from the opening of the third cavity 1543 to the posterior peripheral edge 1519 at the edge of the first toe end portion 1505A. The third depth 1533 may be a consistent depth or may vary along the third cavity 1543. The third depth 1533 of the third cavity 1543 can range from about 0.215 inches to 0.245 inches. For example, the third depth 1533 is about 0.215 inches, 0.219 inches, 0.223 inches, 0.227 inches, 0.231 inches, 0.235 inches, 0.239 inches, 0.243 inches. , Or 0.245 inches. In some embodiments, the third depth 1533 of the third cavity 1543 can be about 0.230 inches.

The fourth cavity 1544 of the toe end 1505 adjacent to the sole 1508 is associated with the turage portion 1526 at the second toe end portion 1505B. The turage portion 1526 at the second toe end portion 1505B can cover a portion of the rear surface 1515 that ranges from about 4% to 10%. For example, the turage portion 1526 at the second toe end portion 1505B can cover about 4%, 5%, 6%, 7%, 8%, 9%, or 10% of the rear surface 1515. In some embodiments, the turage portion 1526 at the second toe end portion 1505B can cover about 5% of the rear surface 1515. The percentage coverage of the towed portion 1526 is minimal at the second toe end portion 1505B. Similarly, the fourth depth 1534 of the fourth cavity 1544 (discussed in more detail below) associated with the percent coverage of the ledge portion 1526 at the second toe end portion 1505B is also very small. The percentage coverage of the tow end portion 1526 at the second toe end portion 1505B is much smaller than the percentage coverage at the first toe end portion 1505A. In another embodiment, the percentage coverage of the rear surface 1515 in the second toe end portion 1505B can be greater than or equal to the percentage coverage of the rear surface 1515 in the first toe end portion 1505A. The percentage coverage of the toe end portion 1526 in the second toe end portion 1505B remains substantially constant and is in the third toe end portion 1505C until it is integrally formed with the rear portion 1509. Increases slightly towards.

The fourth cavity 1544 at the toe end 1505 between the third cavity 1543 adjacent to the top rail 1507 and the second cavity 1542 in the sole 1508 comprises a fourth depth 1534. The fourth depth 1534 is the distance measured parallel to the face surface 1514 from the opening of the fourth cavity 1544 to the posterior peripheral edge 1519 at the edge of the second toe end portion 1505B. It can be seen that the fourth depth 1534 varies along the fourth cavity 1544, but in other embodiments it may be consistent along the fourth cavity 1544. The fourth depth 1534 of the fourth cavity 1544 can range from about 0.140 inches to 0.165 inches. For example, the fourth depth 1534 may be about 0.140 inch, 0.144 inch, 0.148 inch, 0.152 inch, 0.156 inch, 0.160 inch, or 0.165 inch. Can be done. In some embodiments, the fourth depth 1534 of the fourth cavity 1544 can be about 0.150 inches. As mentioned above, the fourth depth 1534 of the fourth cavity 1544 correlates with the percentage of the posterior surface 1515 covered by the toured portion 1526 at the second toe end portion 1505B. The percentage coverage of the rear surface 1515 by the towage portion 1526 is smaller at the second toe end portion 1505B than at the first toe end portion 1505A, whereby the fourth depth 1534 becomes the third depth 1533. Smaller than. In another embodiment where the percentage coverage of the rear surface 1515 by the towage portion 1526 is greater at the second toe end portion 1505B than at the first toe end portion 1505A, the fourth depth 1534 is the third. It may be greater than the depth of 1533. In other embodiments where the rear surface 1515 percent coverage by the tow end 1526 is the same as in the second toe end portion 1505B and the first toe end portion 1505A, the fourth depth 1534 is a third. It may be the same as the depth 1533.

At the heel end 1506 of the club head body 1510, the heel ledge portion 1524 can be curved and extended towards the top rail 1507, the sole 1508, and the toe end 1505. A fifth cavity 1545 is formed between the rear surface 1515 and the heel ledge portion 1524. The heel ledge portion 1524 extends from the upper end portion 1501 to the bottom end portion 1502 and is integrally formed with the top rail 1507 and the rear portion 1509. The heel ledge portion 1524 can cover a part of the rear surface 1515. The heel ledge portion 1524 can cover about 3% to 8% of the rear surface 1515. For example, the heel ledge portion 1524 can cover about 3%, 4%, 5%, 6%, 7%, or 8% of the rear surface 1515. In some embodiments, the heel ledge portion 1524 can cover about 4% of the back surface 1515. The percentage coverage of the heel ledge portion 1524 covering the rear surface 1515 is related to the fifth depth 1535 of the fifth cavity 1545.

As illustrated in FIG. 20, the fifth depth 1535 of the fifth cavity 1545 is the rear peripheral edge of the heel end 1506 (which abuts the dotted lines AA) from the opening of the fifth cavity 1545. Measured parallel to the face surface 1514 to 1519. The fifth depth 1535 may be a consistent depth or may vary along the fifth cavity 1545. The fifth depth 1535 of the fifth cavity 1545 can range from about 0.080 inches to 0.110 inches. For example, the fifth depth 1535 is approximately 0.080 inch, 0.082 inch, 0.084 inch, 0.086 inch, 0.088 inch, 0.090 inch, 0.092 inch, 0.094 inch. , 0.096 inch, 0.098 inch, 0.100 inch 0.102 inch, 0.104 inch, 0.106 inch, 0.108 inch, or 0.110 inch. In some embodiments, the fifth cavity 1545 can have a fifth depth of 1535 of about 0.100 inches.

As illustrated in FIG. 20, the first cavity 1541, the second cavity 1542, the third cavity 1543, the fourth cavity 1544, and the fifth cavity 1545 described above are all integrated with each other. Connected to define a continuous 360 degree undercut 1550. In an exemplary embodiment, the undercut 1550 can include a first cavity 1541, a second cavity 1542, a third cavity 1543, a fourth cavity 1544, and a fifth cavity 1545. The undercut 1550 further comprises 100% of the rear peripheral edge portion 1519 of the face element 1511 of the club head body 1510. The undercut 1550 of the club head body 1510 can help reduce weight and increase flexion within the face element 1511. In other embodiments, the cavities (eg, first cavity 1541, second cavity 1542, third cavity 1543, fourth cavity 1544, and fifth cavity 1545) are separated in any combination. The undercut 1550 can comprise 70% to 100% of the posterior margin 1519. For example, the cavity is between the first cavity 1541 and the second cavity 1542, or between the third cavity 1543 and the fourth cavity 1544, or the first, second, third. , 4th and 5th cavities can be fragmented and discontinuous between any combination of cavities 1541, 1542, 1543, 1544, and 1545. In some embodiments, the partition between the cavities may be a structure (not shown) such as a rib, lip, ledge, wall, protrusion, or any other partition structure. can. In these exemplary embodiments, the undercut 1550 can comprise 70%, 75%, 80%, 85%, 90%, 95%, or 100% of the posterior margin 1519.

The face element 1511 of the club head body 1510 comprising some of the above-mentioned cavities to form a 360 degree undercut 1550 can further comprise a face thickness. The face thickness of the face element 1511 can help distribute stress and allow further face inflection along the undercut 1550 during ball impact. In many embodiments, the face thickness of the face element 1511 can vary from toe end 1505 to heel end 1506, from top end 1501 to bottom end 1502, or any combination thereof.

As shown in FIG. 19, the face thickness of the face element 1511 includes a first thickness 1551, a second thickness 1552, a third thickness 1553, and a fourth thickness 1554. be able to. The first thickness 1551 is measured vertically from the face center 1516 to the rear center 1518. The first thickness 1551 is from about 0.055 inches to about 0.075 inches, from about 0.055 inches to about 0.065 inches, from about 0.065 inches to about 0.075 inches, or about 0.060. It can range from inches to about 0.070 inches. For example, the first thickness 1551 is 0.055 inch, 0.057 inch, 0.059 inch, 0.061 inch, 0.063 inch, 0.065 inch, 0.067 inch, 0.069 inch, It can be 0.071 inch, 0.073 inch, or 0.075 inch. In some embodiments, the first thickness of face element 1511 can be about 0.065 inches.

As shown in FIG. 19, the second thickness 1552 is the face thickness measured perpendicularly from the face surface 1514 to the apex of the reinforcing element 1520 (details are described below). In some embodiments without the reinforcing element 1520, the second thickness 1552 is measured perpendicularly from the face surface 1514 to the rear surface 1515 adjacent to the rear center 1518. The second thickness is from about 0.150 inches to about 0.200 inches, from about 0.150 inches to about 0.160 inches, from about 0.160 inches to about 0.170 inches, from about 0.170 inches. From about 0.180 inches, from about 0.180 inches to about 0.190 inches, from about 0.190 inches to about 0.200 inches, from about 0.150 inches to about 0.175 inches, or from about 0.175 inches It can be in the range of about 0.200 inches. For example, the second thickness 1552 is about 0.150 inches, about 0.155 inches, about 0.160 inches, about 0.165 inches, about 0.170 inches, about 0.175 inches, about 0.180. It can be inches, about 0.185 inches, about 0.188 inches, about 0.190 inches, about 0.195 inches, or about 0.200 inches. In some embodiments, the second thickness of face element 1511 can be about 0.188 inches.

As shown in FIG. 19, the third thickness 1553 is a face thickness that is adjacent to the posterior peripheral edge 1519 and distal to the rear center without the reinforcing element 1512, from the face surface 1514 to the rear surface. Is measured vertically. The third thickness 1553 is from about 0.050 inches to about 0.060 inches, from about 0.060 inches to about 0.070 inches, from about 0.070 inches to about 0.080 inches, from about 0.080 inches. It can range from about 0.090 inches, about 0.090 inches to about 0.100 inches, about 0.050 inches to about 0.75 inches, or about 0.075 inches to about 0.100 inches. .. For example, the third thickness 1553 is about 0.050 inch, about 0.55 inch, about 0.060 inch, about 0.065 inch, about 0.070 inch, about 0.075 inch, about 0.080. It can be inches, about 0.085 inches, about 0.088 inches, about 0.090 inches, about 0.095 inches, or about 0.100 inches. In some embodiments, the third thickness 1553 of the face element 1511 can be about 0.088 inches.

As shown in FIG. 19, the fourth thickness 1554 is the face thickness measured perpendicularly from the face surface 1514 to the edge of the rear peripheral edge portion 1519 of the rear surface 1515. The fourth thickness is from about 0.050 inches to about 0.070 inches, from about 0.050 inches to about 0.060 inches, from about 0.060 inches to about 0.070 inches, from about 0.050 inches. It can range from about 0.058 inches, about 0.058 inches to about 0.064 inches, or about 0.064 inches to about 0.070 inches. For example, the fourth thickness 1554 is about 0.50 inch, about 0.052 inch, about 0.054 inch, about 0.056 inch, about 0.058 inch, about 0.060 inch, about 0.062. It can be inches, about 0.064 inches, about 0.066 inches, about 0.068 inches, or about 0.070 inches. In some embodiments, the fourth thickness 1554 of the face element 1511 can be about 0.060 inches.

In some embodiments, the club head body 1510 may be free of the strengthening device 1512 and the strengthening element 1520. In an exemplary embodiment of this, the face element 1511 near the center of the face (first thickness 1551 and second thickness 1552) is 0.088 inches (about 0.088) to distribute the stress. Faces larger than inches to about 0.100 inches, about 0.088 inches to about 0.220 inches, about 0.100 inches to about 0.220 inches, or about 0.140 inches to about 0.180 inches) Can be thickness. For example, the face element 1511 near the face center 1516 is about 0.088 inches, about 0.090 inches, about 0.092 inches, about 0.094 inches, about 0.096 inches, about 0.098 inches, about 0.098 inches. It can comprise a first thickness of 1551 and a second thickness of 1552 of 0.100 inches, about 0.110 inches, about 0.114 inches, about 0.180 inches, or about 0.220 inches.

(Club head with undercut and reinforced device)
As illustrated in FIGS. 19 and 20, in some embodiments, the club head body 1510 further comprises a strengthening device 112, 612, and a strengthening device 1512 similar to 912. In another embodiment, the club head body 1510 can be without the reinforced device 1512. The reinforcement device 1512 is located on the posterior surface 1515 of the face element 1511 at the substantially posterior center 1518. The reinforced device 1512 extends from the rear surface 1515 away from the front end 1503. The strengthening device 1512 comprises one or more strengthening elements 1520. In many embodiments, each of the reinforcing elements 1520 comprises an outer peripheral surface 1626, an inner peripheral surface 1629, and a geometric center. The reinforcing element 1520 further comprises a looped rib 1527. In these or other embodiments, the geometric center of one or more of the reinforcing elements 1520 can be at the posterior center 1518 of the posterior surface 1515.

In some embodiments, the looped rib 1527 can include a plurality of looped ribs. The looped ribs 1527 may be concentric with each other. In another embodiment, when the loop rib 1527 comprises a plurality of loop ribs, two or more of the loop ribs 1527 may be non-concentric. Further, in these or other embodiments, two or more of the looped ribs 1527 may overlap. On the other hand, in some embodiments, the loop rib 1527 may comprise an elliptical loop rib, and in other embodiments, the loop rib 1527 may comprise a circular loop rib.

Upon mounting, the reinforcement element 1520 and the looped rib 1527 are of any suitable shape (eg, many) configured to perform the intended function of the reinforcement device 1512 and / or the reinforcement element 1520 described above. It can be implemented in any suitable configuration (square, oval, circular, etc.) and / or any suitable configuration. Further, when the reinforcement element 1520 comprises a plurality of reinforcement elements, the two or more reinforcement elements of the reinforcement element 1520 may resemble another and / or two of the reinforcement elements 1520. One or more enhancements may be different from the others.

In some embodiments, the outer peripheral surface 1626 of the reinforcing element 1520 may be filled with respect to the posterior surface 1515. In these or other embodiments, the inner peripheral surface 1629 of the loop rib 1627 may be filled with respect to the posterior surface 1515. Filling the outer peripheral surface 1626 of the reinforcing element 1520 with respect to the rear surface 1515 may allow for a smooth transition of the reinforcing element 1520 to the rear surface 1515. Further, by fleshing out the outer peripheral surface surface 1626 of the reinforcing element 1520 against the rear surface 1515, the stress from the impact can be directed to the reinforcing element 1520 and separated from the face surface 1514. On the other hand, the outer peripheral edge surface 1626 of the reinforcing element 1520 or the inner peripheral edge surface 1629 of the loop-shaped rib 1627 can be filled with respect to the rear surface 1515 using a fillet 1523 having a radius of about 0.012 cm or more. .. For example, in some embodiments, the fillet 1523 of the outer peripheral surface 1626 relative to the posterior surface 1515 is about 0.012 cm to about 2.0 cm, about 0.50 cm to about 3.0 cm, and so on. Alternatively, it can range from about 1.0 centimeters to about 4.0 centimeters. In the case of a further example, in some embodiments, the fillet 1523 of the inner peripheral surface 1629 with respect to the posterior surface 1515 is from about 0.012 cm to about 2.0 cm and from about 0.50 cm to about 3.0. It can be in the range of centimeters, or about 1.0 centimeters to about 4.0 centimeters.

In some embodiments, the outer peripheral surface 1626 of the reinforcing element 1520 can be fleshed out directly to the posterior surface 1515. In these embodiments, the face thickness is along the fillet 1523 from the face thickness at the second face thickness 1552 (from the face surface 1514 to the apex of the reinforcing element 1520) to the face thickness at the rear surface 1515. It gradually decreases.

In some embodiments, the club head 1500 may further include on the rear surface 1515 of the club head 1500 a lip portion (not shown) similar to the lip portion 552 described above and FIGS. 15-17. The lip portion of the club head 1500 can extend from the heel end 1506 to the toe end 1505 around the reinforcement element 1520 of the club head 1500. In these or other embodiments, the fillet 1523 on the outer peripheral surface 1626 of the reinforcing element 1520 can migrate to the lip portion. Thus, the face thickness gradually decreases along the fillet 1523 from the second thickness 1552 to the minimum thickness between the lip portion and the strengthening element 1520, and then from the minimum thickness to the lip portion. Gradually increases to the top of. In these embodiments, the minimum thickness between the reinforcing element 1520 and the lip portion can be greater than the first thickness 1551 at the face center 1516 and the minimum between the reinforcing element 1520 and the lip portion. The thickness of the can be approximately equal to the first thickness 1551, or the minimum thickness between the reinforcing element 1520 and the lip can be less than the first thickness 1551.

As previously described, the strengthening device 1512 and the strengthening element 1520 reinforce the face element 1511 while allowing the face element 1511 to bend, for example, when the face surface 1514 impacts a golf ball. It is configured as follows. As a result, the face element 1511 allows the mass from the face element 1511 to be redistributed to the rest of the club head 1500, allowing the face element 1511 to be more unbuckled and broken under the resulting bending. The face element 1511 can be thinned so that it can be made flexible. Advantageously, the face element 1511 can be made thinner when mounted with the strengthening device 1512 and the strengthening element 1520, so that the center of gravity, moment of inertia, and coefficient of restitution of the club head 1500 can provide the performance characteristics of the club head 1500. Can be modified to improve. For example, when the strengthening device 1512 and the strengthening element 1520 are mounted, golf hit on the face surface 1514 by increasing the firing angle, increasing the ball speed, and / or reducing the spin of the golf ball. The flight distance of the ball can be increased. In these examples, the strengthening device 1512 and the strengthening element 1520 can have some effect of counteracting gearing against the golf ball provided by the face surface 1514.

The reinforcing device 1512 and the reinforcing element 1520 can further provide the benefit of reducing stress when mounted as a closed structure (ie, loop rib 1527). This is because such a closed structure is capable of withstanding deformation as a result of circumferential (ie, hoop) stress acting on the strengthening device 1512 and the strengthening element 1520. For example, the circumferential (ie, hoop) stress acting on the reinforcement device 1512 and the reinforcement element 1520 prevents the opposing sides of the reinforcement device 1512 and the reinforcement element 1520 from rotating away from each other, thereby reducing bending. obtain.

The undercut 1550 of the club head body 1510 can produce performance characteristics similar to those of the enhanced device 1512 described above. In some embodiments, the club head body 1510 can be without the strengthening device 1512, and the club head body 1510 with the undercut 1550 is a club head body with both the strengthening device 1512 and the undercut 1550. It can be carried out similar to 1510. An undercut extending 360 degrees with a first cavity 1541, a second cavity 1542, a third cavity 1543, a fourth cavity 1544, and a fifth cavity 1545 is a face element 1511 during impact. Allows for optimum bending and deflection of. In a similar club head body without a 360 degree undercut, the face element cannot bend or bend that much. More specifically, a similar club head body without a third cavity 1543, a fourth cavity 1544, and / or a fifth cavity 1545 can bend or bend at the heel and toe ends. Can not. Deflection of similar club heads is limited at the heel end 1506, where the toe end 1505 will not have any space for the posterior surface of the face element to bend and return. Specifically, the 360 degree undercut 1550 of the club head body 1510 with the third cavity 1543 and the fourth cavity 1544 at the toe end 1505 and the fifth cavity 1545 at the heel end 1506 Prevents the rear surface 1515 of the face element 1511 from contacting the ledge portion 1526 and the heel ledge portion 1524 during impact. Therefore, the face element 1511 is free to bend for greater deflection. The fourth depth 1534 of the fourth cavity 1544 further prevents the rear surface 1515 of the face element 1511 from contacting the ledge portion 1526 during impact due to increased deflection. Due to the small fourth depth 1534 of the fourth cavity 1543 (ie, the tow end 1526 is less prominent), the face element 1511 near the toe end 1505 extends further back. can do.

The deflection of the face element 1511 affects the coefficient of restitution (COR) of the club head 1500. COR measures the elasticity of an object at the time of a collision and is the ratio of the final relative velocity of the object to the initial relative velocity of the object. A higher COR results in an increased ball velocity and distance, and a lower COR results in a decreased ball velocity and distance. Therefore, an increase in the deflection of the 360 degree undercut 1550 of the club head 1500 affects the distance and velocity of the ball after impact. As the undercut 1550 increases the deflection of the face element 1511, so does the distance and velocity of the ball.

In addition, the 360 degree undercut 1550 is located between the periphery of the face element 1511 experiencing the least amount of stress (ie, the rear surface 1515 and the rear portion 1509, the top rail 1507, the turage section 1526, and the heel ledge section 1524. Allows removal of mass from the rear peripheral edge portion 1519). The removed mass is then relocated to other positions above the club head 1500 (eg, near the bottom end 1502, near the toe end 1505, near the heel end 1506, or any combination thereof). Can be distributed. Mass redistribution is lower and the center of gravity (CG) can be shifted backwards towards the rear end 1504, which is a higher performance characteristic such as an increased moment of inertia (MOI). A club head equipped with can be provided. The width of the first portion 1526A may further affect the mass distribution for CG and MOI. The width of the first portion 1526A as illustrated in FIG. 20 increases mass in the toe end 1505 and helps improve MOI. A better CG design and increased MOI can result in increased ball velocity and prevent the club head 1500 from rotating from the toe end 1505 to the heel end 1506. Preventing the club head 1500 from rotating from the toe end 1505 to the heel end 1506 allows for better contact with the ball at impact, which provides optimal ball velocity, spin, and trajectory. It can result. In some embodiments, weights (not shown) can be disposed in a second cavity 1542 between the rear surface 1515 and the rear portion 1509 to make the CG more effective. Weights positioned within the second cavity 1542 allow the CG to shift towards the rear end 1504 and the sole 1508. The weights disposed in the second cavity 1542 can further absorb the stresses and vibrations experienced by the club head body 1510 during impact. Absorbing stresses and vibrations with weights can help maintain the durability and structural integrity of the club head body 1510, as well as improve the feel of the player.

The club head body 1510 may further include a cascading sole 1555. The cascading sole 1555 is located in the inner cavity of the sole 1508 at the bottom of the second cavity 1542 located between the rear portion 1509 and the rear surface 1515. The cascading sole 1555 of the club head body 1510 can be similar to the cascading sole 955 of the club head body 910 described above, which has a first layer (not shown) and a second layer (not shown). The cascading sole 1555 of the club head body 1510 allows some of the stress experienced by the face element 1511 near the sole 1508 to be distributed to the first and second layers of the club head body 1510. To. The first and second layers of the cascading sole 1555 of the club head body 1510 prevent stress concentration, primarily in the thinnest section of the face element 1511 near the sole 1508. The distribution of stress in the first and second layers in the sole 1508 prevents permanent deformation of the face element 1511. Thus, after multiple impacts with the ball, more consistent performance characteristics and feel can be produced.

The golf club heads 100, 300, 600, 800, 900, 1500 can be part of a set of club heads with varying loft angles. In some embodiments, the center thickness 537, the outer face thickness 542 of the reinforcement element 120, the top thickness 546, the bottom thickness 548, the face thickness at the rib height 540, or a combination of the aforementioned thicknesses It can vary with the loft angle of the club heads within a set of club heads.

Moving on to the next drawing, FIG. 10 shows a flowchart relating to one embodiment of the method 1000 for providing a golf club head. Method 1000 is merely exemplary and is not limited to the embodiments presented herein. Method 1000 can be used in many different embodiments or examples not explicitly illustrated or described herein. In some embodiments, the work, procedures, and / or processes of Method 1000 may be performed in the order presented. In other embodiments, the work, procedures, and / or processes of Method 1000 may be performed in any other suitable order. In yet another embodiment, one or more of the work, procedures, and / or processes in Method 1000 may be combined or skipped. In many embodiments, the golf club head is fitted to the golf club head 100 (FIGS. 1 and 2), the golf club head 600 (FIGS. 6 and 7), and / or the golf club head 800 (FIGS. 8 and 9). It may be similar or the same.

Method 1000 can include work 1001 to provide face elements. The face element may be similar to or identical to the face element 111 (FIG. 1).

Method 1000 can include work 1002 to provide a reinforced device. The reinforced device may be similar to or identical to the reinforced device 112 (FIG. 1). FIG. 11 shows exemplary work 1002 according to the embodiment of FIG.

For example, work 1002 can include work 1101 that provides a first reinforcement element. The first reinforcement element is any one of the first reinforcement element 121 (FIG. 1), the reinforcement element 621 (FIG. 6), the reinforcement element 120 (FIG. 1), and / or the reinforcement element 620 ( It may be similar to or identical to any one of the reinforcement elements in FIG. 6).

In addition, work 1002 can include work 1102, which provides a second reinforcement element. The second reinforcement element may be similar to or identical to any one of the second reinforcement element 641 (FIG. 6) and / or the reinforcement element 620 (FIG. 6). In some embodiments, work 1101 and work 1102 may be performed at about the same time. In other embodiments, task 1102 may be omitted.

Returning to FIG. 10, method 1000 can include work 1003 to provide peripheral wall elements. The peripheral wall element may be similar to or identical to the peripheral wall element 113 (FIG. 1). In some embodiments, task 1003 may be omitted.

In some embodiments, method 1000 can include work 1004, which provides an insert, within the central cavity within the reinforced device provided in work 1002. In some embodiments, task 1004 may be omitted.

In many embodiments, two or more of the tasks 1001 to 1004 may be performed sequentially or at about the same time. In these or other embodiments, operations 1001-1004 may be performed by performing any suitable manufacturing technique (eg casting, forging, molding, machining, joining, etc.).

Although the golf club heads and related methods described herein have been described in the context of specific embodiments, various changes may be made without departing from the spirit or scope of the present disclosure. For example, to those skilled in the art, tasks 1001 to 1004 of FIG. 10 and tasks 1101 and 1102 of FIG. 11 consist of many different procedures, processes, and tasks, performed by many different modules in many different orders. What can be done, that any element of FIGS. 1-4 can be modified, and the previous discussion of some of these embodiments is necessarily a complete description of all possible embodiments. It will be easy to see that it is not always the case.

(example)
(Example 1: Comparison between 360 degree undercut and partial undercut)
Referring to Table 1 below, a finite element analysis (measured in pound-force inches) to evaluate the internal energy of two similar golf club heads during impact with a golf ball at 90 mph (measured in pounds-inch inches). FEA) test was done. Three points of impact on the face element of the golf club head, namely the toe end, the face center, and the heel end, were selected for the FEA test. The first golf club head tested was the club head 1500, the club head 1500 comprising a 360 degree undercut 1550, the undercut 1550 being continuous and of the club head body 1510. The above-mentioned first, second, third, fourth, and fifth cavities 1541, 1542, 1542, 1544, and 1545 are provided. For comparative measurements, the control golf club heads used were similar in size and structure, with cavities in the top rails and sole, but no 360 degree undercut (ie, heel end and heel end and). There is no cavity inside the toe end).

The FEA test measured the internal energy produced by the face element. Here, 7.8 pound inches was equivalent to about 1 mph. As shown in Table 1 above, the golf club head is a golf ball of about 123.0 mph at the heel end 1506, about 125.3 mph at the face center 1516, and about 123.2 mph at the toe end 1505. Produced speed. Compared to the club head 1500, the control golf club head produces a lower golf ball velocity of about 122.4 mph at the heel end, about 124.3 mph at the center of the face, and about 121.9 mph at the toe end. rice field. A club head consisting of a 360 degree undercut 1550 with an integrally continuous first cavity 1541, second cavity 1542, third cavity 1543, fourth cavity 1544, and fifth cavity 1545. The 1500 was all three tested compared to golf club heads of similar controls with only cavities in the top rail and sole (ie no cavities in the heel and toe ends). An increase in ball speed was seen at one point. More specifically, the club head 1500 has an increase of about 0.5-0.75 mph (about 0.5% increase) at the heel end 1506 and about 1 mph at the center of the face relative to the control golf club head. There was an increase (about 0.8% increase) and an increase of about 1-1.5 mph (about 1.1% increase) at the toe end 1505.

The FEA test further showed the peak deflection of the face element of the golf club head experienced during impact with the golf ball. Peak deflection was measured by the FEA from the face surface of the face element at the start position to the face surface of the face element at the end of the impact position before the face element bounced back to the start position. The face element 1511 of the club head 1500 with a 360 degree undercut experiences a peak deflection of 0.040 to 0.050 inches, while the control golf club head (cavities in the top rail, and sole). Face elements (with cavities inside, but no cavities in the heel and toe ends) experienced peak deflections of 0.030 inches to 0.040 inches. Thus, the face element 1511 of the club head 1500 with a 360 degree undercut has an increase of 28.6% in peak deflection.

As shown in Table 1 and as described above, the club head 1500 is at the heel end 1506, face center 1516, and toe end 1505 as compared to the control golf club head. , The ball speed was increased and the peak deflection of the face element 1511 was increased. The increased performance result of the club head 1500 is mainly 360 degree under consisting of a first cavity 1541, a second cavity 1542, a third cavity 1543, a fourth cavity 1544, and a fifth cavity 1545. Due to the cut 1550. This is compared to a similarly structured and sized control golf club head, which has a cavity in the top rail and a cavity in the sole, but at the heel end and There is no cavity inside the toe end.

A continuous 360 degree undercut 1550 (specifically, with third and fourth cavities 1543 and 1544 at the toe end 1505 and with a fifth cavity 1545 at the heel end 1506) is a face. Element 1511 allowed more space for flexing. Therefore, more internal energy is produced, which is equivalent to a higher ball velocity. Higher ball velocities can result in other performance characteristics, such as narrowing the firing angle, ball spin, and statistical area on which the ball lands. They all bring the distance of the ball between games. More specifically, the increase in ball velocity experienced by the club head 1500 is only 0.1 to 0.3 degrees compared to a similar control club head with only a top rail cavity and a sole cavity. It can be equivalent to a high firing angle and a ball spin as low as 100 rpm to 300 rpm. Higher launch angles and lower ball spins can increase the flight distance of the ball after impact. Increasing the launch angle and decreasing spin rate of the club head 1500 with the first, second, third, fourth, and fifth cavities 1541, 1542, 1542, 1544, 1545 are the toe end cavities. And an increase in ball distance of 2 to 5 yards was seen compared to the club head of the control without the heel end cavity.

The club head 1500, consisting of a 360 degree undercut 1550, not only increased ball velocity, but also maintained a MOI similar to a control club head with only top rail and sole cavities. Having a MOI similar to a club head with a lower ball speed means that the club head 1500 can behave as a more tolerant club without giving up on a faster ball speed. The club head 1500 is more forgiving due to the more consistent ball velocity across the face element 1511 (from toe end 1505 to heel end 1506). A more consistent ball velocity across the face element 1511 can thereby produce a more consistent ball flight and distance during missed hits (ie, impact at the heel end 1506 or toe end 1505).

Further, although the above examples may be described in the context of iron-type golf club heads, the devices, methods, and products described herein are wood-type golf clubs and putter-type golf. It can be applied to other types of golf clubs, such as clubs. Alternatively, the devices, methods, and products described herein can be other applicable types of sporting goods such as hockey sticks, tennis rackets, fishing rods, ski poles, and the like.

Other substitutions of different embodiments having one or more of the various figure features mentioned in the above description, such changes and other further examples, are similarly contemplated. Accordingly, the specification, claims, and drawings of the present specification are intended to illustrate, but are not limited to, the scope of the present disclosure. The scope of this application is intended to be limited to the scope required by the appended claims.

(Clause 1) A golf club head, a front end portion and a rear end portion, a face element, a face surface located at the front end portion, and a rear surface located at the rear end portion, at the rear center. A rear peripheral edge, said a rear surface with a reinforced device, said face element with, and an upper end having a top rail extending in an arc towards the bottom end to form a top rail wall. A bottom having a sole formed integrally with a rear portion extending upward toward the upper end portion, a first toe end portion, a second toe end portion, and a third toe end portion. The first toe end portion is adjacent to the upper end portion, is formed integrally with the upper end portion, and is the third toe end portion. Is adjacent to the bottom end portion and is integrally formed with the bottom end portion, and the second toe end portion is the first toe end portion and the third toe end portion. Provided between the portions, the toe end has a toured portion that curves and extends toward the top rail, the sole, and the heel end, and the tow end. The portion is curved and extends toward the toe end, the top rail, the sole, and the toe end, which are integrally formed with the top rail wall portion and the rear portion. A heel end portion including a heel ledge portion, wherein the heel ledge portion is integrally formed with the top rail wall portion and the rear portion, and the heel end portion, a first cavity, a second cavity, and a third cavity. Cavity, a fourth cavity, and an undercut comprising a fifth cavity, wherein the first cavity is formed between the rear surface and the upper rear wall portion, from 0.115 inches. Having a first depth of 0.135 inches, the second cavity is formed between the posterior surface and the posterior portion and has a second cavity of 0.460 inches to 0.580 inches. Having a depth, the third cavity is formed between the rear surface and the ledge portion at the first toe end portion and ranges from 0.215 inches to 0.245 inches. Having a third depth, the fourth cavity is formed between the rear surface and the ledge portion at the second toe end portion, 0.140 inches to 0.165 inches. It has a fourth depth in the range of, and the fifth cavity is between the rear surface and the heel ledge portion. The fifth cavity has the undercut and outer and inner peripheral surfaces having a fifth depth in the range of 0.080 inches to 0.110 inches. A golf club head comprising a reinforcing element with looped ribs, wherein the outer peripheral surface of the reinforcing element is filled with respect to the rear surface.

(Article 2) The golf club head according to Article 1, wherein the loop-shaped rib is symmetric with respect to the x-axis or symmetric with respect to the y-axis.

(Clause 3) The first cavity, the second cavity, the third cavity, the fourth cavity, and the fifth cavity are all integrally connected and continuous. The golf club head described in Clause 1.

(Clause 4) The first cavity, the second cavity, the third cavity, the fourth cavity, and the fifth cavity are divided by a dividing structure and are discontinuous. There is a golf club head described in Clause 1.

(Clause 5) The face element is measured perpendicularly from the face center of the face surface to the posterior center and has a first thickness in the range of 0.055 inches to 0.075 inches. Measured perpendicular to the face surface from the apex of the reinforcement element and having a second thickness in the range of 0.150 inches to 0.200 inches, the face element is from the face surface to the reinforcement device. Measured perpendicular to the posterior peripheral edge and the posterior surface adjacent to the posterior center, with a third thickness ranging from 0.050 inches to 0.060 inches, the face element is the posterior peripheral edge. The golf club head according to clause 1, wherein has a fourth thickness in the range of 0.050 inches to 0.070 inches.

(Article 6) The golf club head further comprises a cascading sole at the bottom of the second cavity, wherein the cascading sole comprises a first layer and a second layer. Golf club head.

(Article 7) The golf club head according to Article 6, wherein the first layer has a thickness larger than the thickness of the second layer.

(Article 8) The golf club head according to Article 1, wherein the inner peripheral edge surface of the loop-shaped rib is filled with respect to the rear surface.

(Clause 9) The first depth of the first cavity is about 0.125 inches and the second depth of the second cavity is about 0.500 inches. The third depth of the third cavity at the toe end portion of 1 is about 0.225 inch and the fourth depth of the fourth cavity at the second toe end portion. The golf club head according to Clause 1, wherein is about 0.120 inches and the fifth depth of the fifth cavity at the heel end is about 0.080 inches.

(Clause 10) The ledge portion covers a part of the rear surface, and the ledge portion is most prominent in the first toe end portion and decreases toward the second toe end portion. However, the golf club head according to Article 1, which is substantially constant and slightly increases toward the third toe end portion.

(Clause 11) A golf club head, which is a front end portion and a rear end portion, a front end portion and a rear end portion, a face surface located at the front end portion, and a rear surface located at the rear end portion. A face element comprising a center and a rear peripheral edge, an upper end having a top rail extending in an arc toward the bottom end to form a top rail wall, and the upper end. Divided into a bottom with a sole that is integrally formed with a rear portion that extends upwards towards, a first toe end, a second toe end, and a third toe end. The first toe end portion is adjacent to the upper end portion and is integrally formed with the upper end portion, and the third toe end portion is the third toe end portion. It is adjacent to the bottom end portion and is integrally formed with the bottom end portion, and the second toe end portion is between the first toe end portion and the third toe end portion. The toe end has a toe end that curves and extends toward the top rail, the sole, and the heel end. The toe end portion integrally formed with the top rail wall portion and the rear portion, and a heel ledge portion curved and extending toward the top rail, the sole, and the toe end portion. The heel end portion is provided, and the heel ledge portion is integrally formed with the top rail wall portion and the rear portion, and the heel end portion, a first cavity, a second cavity, and a third cavity. An undercut comprising a fourth cavity and a fifth cavity, the first cavity being formed between the rear surface and the upper rear wall portion, from 0.115 inches to 0.135. It has a first depth of inches, the second cavity is formed between the rear surface and the rear portion, with a second depth of 0.460 inches to 0.580 inches. The third cavity is formed between the rear surface and the ledge portion at the first toe end portion and has a third cavity in the range of 0.215 inches to 0.245 inches. Having a depth, the fourth cavity is formed between the rear surface and the ledge portion at the second toe end portion and ranges from 0.140 inches to 0.165 inches. It has a fourth depth, and the fifth cavity is formed between the rear surface and the heel ledge portion. A golf club head comprising said undercut, wherein the fifth cavity has a fifth depth in the range of 0.080 inches to 0.110 inches.

(Clause 12) The face element is measured perpendicularly from the face center to the posterior center of the face surface and has a first thickness in the range 0.088 inch to 0.100 inch, the face element. Measured perpendicularly from the face surface to the posterior surface adjacent to the posterior center and having a second thickness ranging from 0.088 inches to 0.100 inches, the face element is said from the face surface to said. The face element comprises a third thickness in the range of 0.050 inches to 0.060 inches, measured to the posterior surface, adjacent to the second thickness and adjacent to the posterior peripheral edge. The golf club head according to clause 11, wherein the rear peripheral edge has a fourth thickness in the range of 0.050 inches to 0.070 inches.

(Article 13) The golf club head according to Article 11, wherein the cascading sole comprises a first layer and a second layer.

(Clause 14) The first layer is proximal to the front end, the second layer is proximal to the rear end, and the first layer goes to the second layer. The golf club head described in Clause 11 to be transitioned.

(Article 15) The golf club head according to Article 11, wherein the first layer has a thickness larger than the thickness of the second layer.

(Article 16) The first depth of the first cavity is about 0.125 inches, the second depth of the second cavity is about 0.500 inches, and the first. The third depth of the third cavity at the toe end portion of 1 is about 0.225 inch and the fourth depth of the fourth cavity at the second toe end portion. 11. The golf club head according to clause 11, wherein is about 0.120 inches and the fifth depth of the fifth cavity at the heel end is about 0.080 inches.

(Article 17) The first cavity, the second cavity, the third cavity, the fourth cavity, and the fifth cavity are all integrally connected and continuous. The golf club head described in Clause 11.

(Article 18) The first cavity, the second cavity, the third cavity, the fourth cavity, and the fifth cavity are divided by a dividing structure and are discontinuous. There is a golf club head according to clause 11.

(Article 19) The golf club head according to Article 11, wherein the weight can be disposed in the second cavity between the rear portion and the rear surface.

(Clause 20) The ledge portion covers a part of the rear surface, and the ledge portion is most prominent in the first toe end portion and decreases toward the second toe end portion. However, the golf club head according to clause 11, which is substantially constant and slightly increases toward the third toe end portion.

(Clause 21) A golf club head having a front end and a rear end, a toe end and a heel end, an upper end having a top rail extending from the toe end to the heel end, and an inner sole. A bottom having a sole with a face, the top rail extending in an arc toward the rear and bottom ends away from the front end and a face element at the front end. It comprises a face surface located and a rear surface located at the rear end opposite to the face surface, the rear surface defining a rear center, a reinforcement device located at the rear surface, and a rear surface and an undercut of the face element. Featuring recesses located between the top rails, with a face element with an undercut extending along the top rail from the toe end to the heel end, and reinforcement elements on the outer and inner peripheral surfaces. A golf club head with looped ribs with the outer peripheral surface of the reinforcing element fleshed out against the rear surface.

22. The golf club head according to clause 21, further comprising an internal radius transition from the rear surface of the face element to the inner sole surface, the internal radius transition comprising a cascading sole.

(Article 23) The golf club head according to Article 22, wherein the cascading sole comprises a first layer and a second layer.

(Clause 24) Clause 23, where the first layer is proximal to the front end, the second layer is proximal to the rear end, and the first layer transitions to the second layer. The golf club head described in.

(Article 25) The golf club head according to Article 23, wherein the first layer has a thickness greater than the thickness of the second layer.

(Article 26) The golf club head according to Article 21, wherein the loop-shaped rib comprises an elliptical loop-shaped rib or a circular loop-shaped rib.

(Article 27) The golf club head according to Article 21, wherein the loop-shaped ribs include a plurality of loop-shaped ribs, and the loop-shaped ribs are concentric with each other.

The golf club heads and related methods discussed herein can be performed in various embodiments, and the previous discussion of some of these embodiments is not necessarily a complete description of all possible embodiments. It is not always the case. Instead, the detailed description of the drawings, and the drawings themselves, may disclose at least one preferred embodiment and also disclose alternative embodiments.

Substitution of one or more claimed elements is a reconstruction, not a correction. In addition, benefits, other benefits, and solutions to problems have been described for specific embodiments. However, any one or more of the claims that may give rise to, or make any benefit, benefit, solution to the problem, and any benefit, benefit, or solution more prominent. Or interpreting as all, essential, necessary or essential features or elements, such benefits, benefits, solutions, or elements are not explicitly stated in such claims. As long as it shouldn't.

Golf rules may change from time to time (for example, new provisions are adopted by golf standardization organizations and / or governing bodies such as the United States Golf Association (USGA), The Royal and Ancient Golf Club of St Andrews (R & A), etc. The equipment, methods, and product-related golf equipment described herein are subject to the rules of golf at any particular point in time, as they may be, or the old rules may be abolished or amended). It may or may not be compliant. Accordingly, golf equipment associated with the devices, methods, and products described herein may be advertised, offered for sale, and / or sold as compliant or non-compliant golf equipment. be. The devices, methods, and products described herein are not limited in this regard.

Moreover, in the embodiments and limitations disclosed herein, the embodiments and / or the limitations are not explicitly claimed in the claims and (2) under the doctrine of equivalents. , If it is an equivalent of explicit elements and / or limitations in the claims, or a potential equivalent, it will not be made publicly available under the principles of public ownership.

Claims (19)

A golf club head
Front and rear ends,
It ’s a face element,
The face surface located at the front end and
A rear surface located at the rear end portion, the rear surface including a rear center, a rear peripheral portion, and a strengthening device.
With the face element comprising
An upper end with a top rail extending in an arc towards the bottom end to form a top rail wall,
A bottom having a sole formed integrally with a rear portion extending upward toward the upper end, and a bottom.
A toe end that is divided into a first toe end portion, a second toe end portion, and a third toe end portion.
The first toe end portion is adjacent to the upper end portion and is formed integrally with the upper end portion.
The third toe end portion is adjacent to the bottom end portion and is integrally formed with the bottom end portion.
The second toe end portion is provided between the first toe end portion and the third toe end portion.
The toe end has a toe end that curves and extends toward the top rail, the sole, and the heel end.
The ledge portion is integrally formed with the top rail wall and the rear portion.
With the toe end
A heel end portion having a heel ledge portion that curves and extends toward the top rail, the sole, and the toe end portion, wherein the heel ledge portion includes the top rail wall and the rear portion. The heel end, which is integrally formed,
An undercut comprising a first cavity, a second cavity, a third cavity, a fourth cavity, and a fifth cavity.
The first cavity is formed between the rear surface and the top rail wall and has a first depth of 0.115 inches to 0.135 inches.
The second cavity is formed between the rear surface and the rear portion and has a second depth of 0.460 inches to 0.580 inches.
The third cavity is formed between the rear surface and the ledge portion at the first toe end portion and has a third depth in the range of 0.215 inches to 0.245 inches. And
The fourth cavity is formed between the rear surface and the ledge portion at the second toe end portion and has a fourth depth in the range of 0.140 inches to 0.165 inches. And
The fifth cavity is formed between the rear surface and the heel ledge portion, and the fifth cavity has a fifth depth in the range of 0.080 inches to 0.110 inches. ,
With the undercut
With a reinforcing element, with looped ribs having outer and inner peripheral surfaces,
The outer peripheral surface of the reinforcing element is fleshed out with respect to the rear surface .
A golf club head in which the strengthening device comprises the strengthening element . The golf club head according to claim 1, wherein the loop-shaped rib is symmetric with respect to the x-axis or symmetric with respect to the y-axis. The first cavity, the second cavity, the third cavity, the fourth cavity, and the fifth cavity are all integrally connected and continuous, according to claim 1. The golf club head described. Claim that the first cavity, the second cavity, the third cavity, the fourth cavity, and the fifth cavity are separated by a dividing structure and are discontinuous. The golf club head according to 1. The face element is measured perpendicularly from the face center of the face surface to the posterior center and has a first thickness in the range of 0.055 inches to 0.075 inches.
The face element is measured perpendicular to the face surface from the apex of the reinforcement element and has a second thickness in the range of 0.150 inches to 0.200 inches.
The face element is measured perpendicularly from the face surface to the posterior surface without the reinforcement device and adjacent to the posterior periphery and the posterior center, a third in the range of 0.050 inches to 0.060 inches. With thickness,
The golf club head according to claim 1, wherein the face element has a fourth thickness in the range of 0.050 inches to 0.070 inches at the rear peripheral edge portion. The golf club head further comprises a cascading sole at the bottom of the second cavity.
The golf club head according to claim 1, wherein the cascading sole includes a first layer and a second layer. The golf club head according to claim 6, wherein the first layer has a thickness larger than the thickness of the second layer. The golf club head according to claim 1, wherein the inner peripheral edge surface of the loop-shaped rib is filled with respect to the rear surface. The first depth of the first cavity is about 0.125 inches.
The second depth of the second cavity is about 0.500 inches.
The third depth of the third cavity at the first toe end portion is about 0.225 inches.
The fourth depth of the fourth cavity at the second toe end portion is about 0.120 inch.
The golf club head according to claim 1, wherein the fifth depth of the fifth cavity at the heel end is about 0.080 inch. The ledge portion covers a part of the rear surface.
The ledge portion is most prominent in the first toe end portion covering 9% of the rear surface and decreases toward the second toe end portion covering 5% of the rear surface. The golf club head according to claim 1, wherein the golf club head is substantially constant and slightly increases toward the third toe end portion covering 6% of the rear surface . A golf club head
Front and rear ends,
It ’s a face element,
The face surface located at the front end and
The rear surface located at the rear end portion, the rear surface including the rear center and the rear peripheral portion, and the rear surface.
With the face element comprising
An upper end with a top rail extending in an arc towards the bottom end to form a top rail wall,
A bottom having a sole formed integrally with a rear portion extending upward toward the upper end, and a bottom.
A toe end that is divided into a first toe end portion, a second toe end portion, and a third toe end portion.
The first toe end portion is adjacent to the upper end portion and is formed integrally with the upper end portion.
The third toe end portion is adjacent to the bottom end portion and is integrally formed with the bottom end portion.
The second toe end portion is provided between the first toe end portion and the third toe end portion.
The toe end has a toe end that curves and extends toward the top rail, the sole, and the heel end.
The ledge portion is integrally formed with the top rail wall and the rear portion.
With the toe end
A heel end portion having a heel ledge portion that curves and extends toward the top rail, the sole, and the toe end portion, wherein the heel ledge portion includes the top rail wall and the rear portion. The heel end, which is integrally formed,
An undercut comprising a first cavity, a second cavity, a third cavity, a fourth cavity, and a fifth cavity.
The first cavity is formed between the rear surface and the top rail wall and has a first depth of 0.115 inches to 0.135 inches.
The second cavity is formed between the rear surface and the rear portion and has a second depth of 0.460 inches to 0.580 inches.
The third cavity is formed between the rear surface and the ledge portion at the first toe end portion and has a third depth in the range of 0.215 inches to 0.245 inches. And
The fourth cavity is formed between the rear surface and the ledge portion at the second toe end portion and has a fourth depth in the range of 0.140 inches to 0.165 inches. And
The fifth cavity is formed between the rear surface and the heel ledge portion, and the fifth cavity has a fifth depth in the range of 0.080 inches to 0.110 inches. ,
With the undercut
Equipped with
The golf club head further comprises a cascading sole at the bottom of the second cavity.
The cascading sole is a golf club head comprising a first layer and a second layer . The face element is measured perpendicularly from the face center to the posterior center of the face surface and has a first thickness in the range 0.088 inches to 0.100 inches.
The face element is measured perpendicularly from the face surface to the posterior surface adjacent to the posterior center and comprises a second thickness ranging from 0.088 inches to 0.100 inches.
The face element is measured from the face surface to the posterior surface and is adjacent to the second thickness and adjacent to the posterior peripheral edge in a third range of 0.050 inches to 0.060 inches. With thickness,
11. The golf club head of claim 11, wherein the face element has a fourth thickness in the rear peripheral edge, ranging from 0.050 inches to 0.070 inches. The first layer is proximal to the anterior end and
The second layer is proximal to the rear end and
The golf club head according to claim 11 or 12 , wherein the first layer shifts to the second layer. The golf club head according to any one of claims 11 to 13 , wherein the first layer has a thickness larger than the thickness of the second layer. The first depth of the first cavity is about 0.125 inches.
The second depth of the second cavity is about 0.500 inches.
The third depth of the third cavity at the first toe end portion is about 0.225 inches.
The fourth depth of the fourth cavity at the second toe end portion is about 0.120 inch.
11. The golf club head of claim 11, wherein the fifth cavity at the heel end has a fifth depth of about 0.080 inches. 11. The first cavity, the second cavity, the third cavity, the fourth cavity, and the fifth cavity are all integrally connected and continuous, according to claim 11. The golf club head described. Claim that the first cavity, the second cavity, the third cavity, the fourth cavity, and the fifth cavity are separated by a dividing structure and are discontinuous. 11. The golf club head according to 11. The golf club head according to claim 11, wherein the weight can be disposed in the second cavity between the rear portion and the rear surface. The ledge portion covers a part of the rear surface.
The ledge portion is most prominent in the first toe end portion covering 9% of the rear surface and decreases toward the second toe end portion covering 5% of the rear surface. 11. The golf club head of claim 11, which is substantially constant and slightly increases towards the third toe end portion covering 6% of the rear surface .

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