JP4177414B2 - Golf club with adjustable loft and face angles - Google Patents

Description

  The present invention relates to a golf club having an adjustable loft angle and face angle.

  Since various loft angles and face angles of a golf club are required depending on a player's body shape and play style, a golf club capable of changing the loft angle and face angle by post-processing has been proposed.

  For example, there is one disclosed in Japanese Patent Laid-Open No. 2001-46557, but an object of the present invention is to provide a golf club in which the lie angle of the golf club can be easily changed according to the player's body shape and preference. The plate is fixed to the inside of the golf club head in an inclined state, a guide hole drilled in the plate to guide the inclination angle of the club shaft, and a golf club corresponding to the guide hole The shaft fixing pipe is attached when the head is inserted, and the club shaft is fixed while being inserted into the shaft fixing pipe.

  Further, the applicant of the present application has proposed an invention in which the loft angle and face angle of a golf club can be changed by post-processing, and the invention is disclosed in Japanese Patent Application Laid-Open Nos. 2002-282400 and 2003-62131. It is disclosed.

  What is disclosed in Japanese Patent Laid-Open No. 2002-282400 will be described with reference to FIG. FIG. 6 is a perspective view of the front end portion of the club shaft according to the embodiment disclosed in Japanese Patent Laid-Open No. 2002-282400 (FIG. 6A), and a sectional view of the joined portion of the golf club head and the club shaft (FIG. 6B). )). The club shaft 101 is made of hollow carbon graphite, and its tip is slightly bent, and the bent portion 102 has a solid shape filled with the hollow portion. Then, after the bent portion 102 is embedded in the hosel portion 104 formed in the golf club head 103, the club shaft 101 is rotated to change the loft angle and the face angle of the golf club, and the desired loft The hosel portion 104 and the bent portion 102 are bonded and fixed at the rotation positions that become the corner and the face angle.

And what is disclosed by Unexamined-Japanese-Patent No. 2003-62131 is demonstrated based on FIG. 7 is a top view (FIG. 7A) and a side view (FIG. 7B and FIG. 7C) of a golf club head according to an embodiment disclosed in Japanese Patent Laid-Open No. 2003-62131. A disc 203 tapered in one direction in a side view is rotatably attached to the sole surface 202 of the golf club head 201. By rotating the disc 203, the loft angle and face angle of the golf club are set. Is changed, and the disk 203 is fixed to the sole surface 202 of the golf club head 201 at the rotation position where the desired loft angle and face angle are obtained.
JP 2001-46557 A JP 2002-282400 A Japanese Patent Laid-Open No. 2003-62131

  However, in the one disclosed in Japanese Patent Laid-Open No. 2001-46557, the lie angle of the golf club is intermittent depending on the position and number of guide holes drilled in the plate (in the embodiment, five holes are drilled). The lie angle cannot be changed continuously and subtly.

  Japanese Patent Laid-Open No. 2002-282400 discloses a method of changing the loft angle and the face angle by rotating the bent portion 102 of the club shaft 101. The loft angle includes a real loft and an original loft (the real loft and the original loft will be described later). In the present invention, the face angle is changed by changing the real loft. The face angle changes with the mutual relationship. For example, the face angle cannot be changed with the loft angle constant. And what is disclosed in Japanese Patent Application Laid-Open No. 2003-62131 changes the loft angle and the face angle by rotating the disk 203 attached to the sole surface 202 of the golf club head 201. It is difficult to use in official competitions as it may violate the attached rules regarding golf clubs.

  Therefore, the present invention provides a golf club that can be used in official competitions, which can be easily and continuously changed in a post-processing manner according to a player's body shape and preference. The purpose is to provide.

In the golf club with adjustable loft angle and face angle according to claim 1 of the present application, a sole weight is fitted into a sole recess portion provided in a sole surface of a head, and a bottom surface of the sole weight is desired from the sole surface. It is characterized by being fixed with a protruding height of.
A golf club with adjustable loft angle and face angle according to claim 2 of the present application is the golf club with adjustable loft angle and face angle according to claim 1, wherein the sole recess is in plan view. Circular,
The sole weight is composed of a disc-shaped head and a round bar-shaped male screw portion having a male screw threaded around its peripheral surface, and the head fits into the sole recess portion. The male screw part is inserted into a first bolt insertion hole that is formed in the bottom surface of the sole recess part and has a female screw threaded on the inner surface thereof, and the protruding height of the bottom surface of the sole weight with respect to the sole surface. It is characterized in that the height is adjusted and fixed.
A golf club with adjustable loft angle and face angle according to claim 3 of the present application is the golf club with adjustable loft angle and face angle according to claim 2, wherein the head has an inner surface on the head. A first set screw insertion hole in which a female screw is threaded is formed, the set screw is screwed into the first set screw insertion hole, and the tip of the set screw presses the bottom surface of the sole recess. The protruding height of the bottom surface of the sole weight with respect to the sole surface is fixed.
Further, a golf club with adjustable loft angle and face angle according to claim 4 of the present application is the golf club with adjustable loft angle and face angle according to claim 1, wherein The head has a polygonal shape in which one side on the face side of the head has a curved or linear shape substantially parallel to the face surface, and the sole weight has a bottom surface that is substantially the same shape as the sole recess portion in plan view and an edge of the bottom surface A peripheral wall that rises from a portion, the peripheral wall is fitted into the sole recess, and an edge on the face side of the bottom surface of the sole weight and an edge on the back face side of the head facing the edge are Each is fixed with a desired protrusion height from the sole surface, and in the space formed by the sole recess and the sole weight, the sole weight and The adjustment weight and / or the sole weight of the body for adjusting weights of separate are fixed, it is characterized in that.
In the present specification, claims and drawings (hereinafter referred to as “the present specification, etc.”), the back face refers to the rear part of the head facing the face.
A golf club with adjustable loft angle and face angle according to claim 5 of the present application is the golf club with adjustable loft angle and face angle according to claim 4, wherein the polygon is on the face side. Is a substantially trapezoidal quadrilateral that is longer than one side on the back face side that is substantially parallel to the back face, and the protruding height of the edge on the face side of the bottom surface of the sole weight is the height of the sole weight It is characterized in that it is lower than the protruding height of the edge on the back face side of the bottom surface.
Furthermore, a golf club with adjustable loft angle and face angle according to claim 6 of the present application is the golf club with adjustable loft angle and face angle according to claim 4 or 5, wherein A bolt through hole having a smooth inner surface and a second set screw insertion hole in which a female screw is threaded is formed in the bottom surface, and a position corresponding to the bolt through hole is formed in the bottom surface of the sole recess. A second bolt insertion hole having a female screw threaded on the inner surface thereof, a headed bolt penetrates the bolt through hole, and a tip of the bolt is screwed into the second bolt insertion hole. The height of the bottom of the sole weight with respect to the screw is adjusted, a stop screw is screwed into the second stop screw insertion hole, and the tip of the stop screw presses the bottom surface of the sole recess portion to Seo Bottom protrusion height of the Ruueito is fixed, it is characterized in that.

  The golf club with adjustable loft angle and face angle according to claim 1 of the present application is a method of adjusting the protruding height of the bottom surface of the sole weight from the sole surface as a method of changing the loft angle and face angle. It depends on how to adjust the weight. For this reason, it conforms to the golf rules and the golf club can be used in official competitions. Further, since the sole weight is fitted in the sole recess, even if the sole surface comes into contact with the ground during the swing of the golf club, the sole weight is not dropped or damaged.

  The golf club having adjustable loft angle and face angle according to claim 2 of the present application uses a disc-like one that fits into a circular sole recess in the sole weight. Since this disk rotates about its center, it is possible to always keep the fitted state with respect to the sole recess. In addition, the protruding height of the bottom surface of the disk-shaped head from the sole surface can be the maximum thickness of the disk, and desired loft angle and face angle can be obtained by changing the thickness of the disk. And the sole weight can have a desired weight. The protrusion height according to the present invention is adjusted by rotating the male screw portion screwed into the first bolt insertion hole and moving the disk-shaped head portion up and down.

  As a method of screwing and fixing the bottom surface of the disk-shaped head protruding from the sole surface to a desired height, there are a method of gluing and welding a sole weight and a sole recess after screwing. In the golf club with adjustable loft angle and face angle according to claim 3 of the present application, the sole weight is fixed by a retaining screw. Therefore, even after the sole weight is fixed, if the set screw is loosened, the protruding height of the disc-shaped head from the sole surface can be adjusted again. In order to fix the protruding height of the bottom surface of the sole weight, the number of the first retaining screw insertion holes may be one, but preferably two or more. In Example 1 to be described later, two first retaining screw insertion holes are provided, and the first retaining screw insertion holes are arranged at positions symmetrical with respect to the center of the head of the sole weight.

In the golf club with adjustable loft angle and face angle according to claim 4 of the present application, the shape of the sole weight is a container shape having a polygonal bottom surface and a peripheral wall, and one side of the polygonal face surface side is formed. It is a curved line or a straight line substantially parallel to the face surface. For this reason, since the sole weight surface of the golf club comes into surface contact with the ground, the sole weight according to the present invention can be attached to the fairway wood.
In addition, an adjustment weight separate from the sole weight and / or an adjustment weight separate from the sole weight is fixed in the space formed by the recess and the sole weight as necessary. Thus, a golf club having a balance according to the player's preference can be obtained. The same adjustment weight as used herein refers to an adjustment weight that is integrally formed with the sole weight and is integrally formed. The separate adjustment weight refers to an adjustment weight that is separate from the sole weight. In Example 2, which will be described later, the case where the same adjustment weight is used is shown.

  In the golf club with adjustable loft angle and face angle according to claim 5 of the present application, the shape of the bottom surface of the sole weight is a substantially trapezoidal quadrilateral whose one side on the face side is longer than one side on the back face side, And since the protruding height of the edge on the face surface side is lower than the protruding height of the edge on the back face side, the swing of the golf club is improved, and even when used for fairway wood, A club that is easy to use can be obtained.

The golf club with adjustable loft angle and face angle according to claim 6 of the present application adjusts and fixes the protruding height of the bottom surface of the sole weight with respect to the sole surface by using a head bolt and a set screw, respectively. Similarly to the invention according to No. 3, even after the sole weight is fixed, the protruding height of the sole weight from the sole surface can be adjusted again. In order to fix the protruding height of the bottom surface of the sole weight, each of the second bolt insertion hole and the second retaining screw insertion hole may be one, but at least one of them should be two or more. Is preferred. In Example 2 described later, there are two second bolt insertion holes, one second retaining screw insertion hole, and the second bolt insertion holes are arranged on the face side and back face side of the sole weight. The second set screw insertion hole is arranged in the middle, but the second set screw insertion holes are arranged on the face side and the back face side of the sole weight, and one second bolt is arranged in the middle. An insertion hole may be arranged.
Of course, the head and the sole weight according to claims 1 to 6 of the present application may be made of metal or synthetic resin, respectively.

FIG. 1 is a top view of the sole surface of the head of a golf club with adjustable loft angle and face angle according to the first embodiment. 2 is a cross-sectional view taken along the line II-II in FIG. FIG. 3 is an explanatory diagram of the loft angle and face angle of the head of the golf club with adjustable loft angle and face angle according to the first embodiment. FIG. 4 is a perspective view of the sole surface of the head of the golf club with adjustable loft angle and face angle according to the second embodiment. 5 is a cross-sectional view taken along line VV in FIG. 6A is a perspective view of a tip portion of a club shaft according to an embodiment disclosed in Japanese Patent Laid-Open No. 2002-282400, and FIG. 6B is a cross-sectional view of a joint portion between the club head and the club shaft. It is. FIG. 7A is a top view of a golf club head according to an embodiment disclosed in Japanese Patent Laid-Open No. 2003-62131, and FIGS. 7B and 7C are side views of the club head. .

Explanation of symbols

1 Golf club head with adjustable loft angle and face angle according to Embodiment 1 2 Golf club head with adjustable loft angle and face angle according to Embodiment 2 10 Sole surface 12 Face 14 Back face 16 Bosel 22 Implementation Sole dent part according to example 1 24 Sole dent part according to example 2 26 Sole weight according to example 1 28 Sole weight according to example 2 34 First bolt insertion hole 36 Stop screw 38 First stop screw insertion hole 40 Bolt with head 42 Bolt through hole 44 Second bolt insertion hole 46 Second set screw insertion hole 48 Adjusting weight

Example 1 and Example 2 according to the best mode for carrying out the present invention will be described with reference to FIGS.
1 is a perspective view of a sole surface of a head of a golf club with adjustable loft angle and face angle according to the first embodiment, FIG. 2 is a cross-sectional view taken along the line II-II in FIG. 1, and FIG. FIG. 4 is an explanatory diagram of a loft angle and a face angle of a golf club head with adjustable loft angle and face angle according to FIG. 1, and FIG. 4 is a sole of a golf club head with an adjustable loft angle and face angle according to the second embodiment. FIG. 5 is a cross-sectional view taken along line VV in FIG. 4.

  1 to 5, reference numeral 1 denotes a golf club head with adjustable loft angle and face angle according to the first embodiment, and reference numeral 2 denotes a golf club head with adjustable loft angle and face angle according to the second embodiment. Reference numeral 10 is a sole surface, reference numeral 12 is a face, reference numeral 14 is a back face, reference numeral 16 is a bozel, reference numeral 22 is a sole recess according to the first embodiment, reference numeral 24 is a sole recess according to the second embodiment, and reference numeral 26 is Sole weight according to the first embodiment, 28 is a sole weight according to the second embodiment, 30 is a head, 32 is a male screw part, 34 is a first bolt insertion hole, 36 is a set screw, 38 Is a first set screw insertion hole, reference numeral 40 is a headed bolt, reference numeral 42 is a bolt through hole, reference numeral 44 is a second bolt insertion hole, reference numeral 46 is a second set screw insertion hole, and reference numeral 48 is an adjustment. For weight.

  First, a golf club head 1 with adjustable loft angle and face angle according to Embodiment 1 of the present invention will be described with reference to FIGS.

  The golf club with adjustable loft angle and face angle according to the first embodiment includes a head 1 and a shaft (not shown) with a grip attached to one end thereof. The shaft not shown is inserted into the hosel 16 of the head 1. It is worn. For Example 1 and Example 2 described later, well-known shafts and grips are used, and a well-known technique is used for fixing the shaft to the head. Therefore, in the first and second embodiments, the head will be mainly described.

  The sole surface 10 of the head 1 is provided with a sole recess 22 having a circular plan view. The sole recess 22 is open to the sole surface 10 and has a substantially cylindrical shape. In Example 1, the size of the opening surface of the sole recess 22 is approximately 20 mmφ, and the depth of the recess is approximately 10 mm. However, the size of the surface and the depth of the recess can be changed as appropriate. Can do. In the first embodiment, the recessed position of the sole recessed portion 22 is close to the back face 14 of the head 1 and close to the heel, but this position can be changed as appropriate. Further, a first bolt insertion hole 34 is formed at the center of the bottom surface of the sole recess 22. A female screw is screwed into the inner surface of the first bolt insertion hole 34, and a male screw portion 32 of a sole weight 26 described later is screwed into the female screw.

  The sole weight 26 includes a disk-shaped head 30 and a male screw part 32. The male screw part 32 is erected at the center of the disk-shaped head 30. The overall shape is a headed bolt shape. It has become. The male screw portion 32 is screwed into the first bolt insertion hole 34 described above, and the length of the screw is adjusted to adjust the surface of the head 30 (that is, the bottom surface when the sole weight 26 is inverted). ) From the sole surface 10 can be adjusted.

  Further, the head 30 is provided with first stop screw insertion holes 38, 38 in the thickness direction of the disk, and a female screw into which the stop screw 36 is screwed is threaded on the inner surface. Yes. Further, a groove is formed on the surface of the head 30 so as to cross the central portion thereof, and a tip of a screwdriver is fitted into the groove, so that the sole weight 26 is fixed to the sole recess 22. It can be rotated.

  The stop screw 36 has a round bar shape with the same diameter over the entire length, and a male screw is threaded on the peripheral surface thereof, and is screwed into the first stop screw insertion hole 38 as described above, and the stop screw When the tip of 36 is screwed into the first retaining screw insertion hole 38 and protrudes toward the bottom surface of the sole recess 22, the other end of the retaining screw 36 is inserted into the first retaining screw insertion hole 38. It has become. Further, a groove is formed on the surface of the other end of the set screw 36 so as to cross the central portion, and the tip of a screwdriver is fitted into this groove.

Next, the operation of the head 1 will be described. Before that, terms of loft angle, face angle and sole inversion used in the present specification and the like will be described with reference to FIG. In addition, GL in FIG. 3 is the ground.
The angle α between the shaft axis A and the line B, which is the face surface, is referred to as a face angle, where α = 0 ° is square, α <0 ° (in the case of illustration) is a hook face, α> The case of 0 ° is called an open face. Further, the sole inversion means that there is a sole inversion when the line D formed by the surface of the sole is rising to the right as shown in FIG. 3C, that is, when γ> 0 °. When the line D and GL coincide with each other, there is no sole inversion. The loft angle indicates the degree of inclination of the face. The angle β1 formed by the line A and the line C indicating the face inclination is called a real loft, and the angle β2 formed by the GL and the line C is called an original loft. .

  By projecting the male screw portion 32 of the sole weight 26 into the first bolt insertion hole 34 of the sole recess portion 22 and changing the screwing length, the protruding height of the bottom surface of the sole weight 26 with respect to the sole surface 10 can be increased. Change. Due to the change in the protruding height of the bottom surface of the sole weight 26, the state shifts from the state without the sole inversion to the state with the sole inversion, and the inclination of the line D changes, so the original loft β2 changes, but the real loft β1 changes. Does not change.

  Specifically, when the protruding height of the bottom surface of the sole weight 26 is gradually increased, the original loft β2 is gradually decreased while the face angle α is gradually changed in the negative direction. That is, the face angle α changes from the open face to the hook face (the state shown in FIG. 3A). Then, in a state where the desired original loft β2 and the face angle α are obtained, that is, in a state where the desired height of the bottom surface of the sole weight 26 is reached, the retaining screws 36, When 36 is inserted and the set screws 36 and 36 are further turned to the right and screwed, the tip of the set screw 36 presses the bottom surface of the sole recess 22. When the set screw 36 presses the bottom surface of the sole recess 22, the sole weight 26 itself cannot be rotated, and the sole weight 26 is fixed to the sole recess 22. The sole weight 26 itself can be rotated again by turning the stop screws 36, 36 counterclockwise to separate the tips of the stop screws 36, 36 from the bottom surface of the sole recess 24. Therefore, after the sole weight 26 is fixed, the protruding height of the bottom surface of the sole weight 26 can be readjusted.

  By the way, in the club shaft disclosed in Japanese Patent Laid-Open No. 2002-282400 shown in “Patent Document 2” (hereinafter referred to as “bend shaft”), the real loft β1 changes, but the original loft β2 changes. do not do. Table 1 shows the relationship between the bend shaft and the head 1 of the golf club according to Example 1 of the present invention (hereinafter referred to as “head 1”). In Table 1, the case of changing is indicated by ◯, and the case of not changing is indicated by ×.

  From the relationship between the bend shaft and the head 1 as described above, the invention of the present application is further effective when combined with the bend shaft, and will be described below.

  When the bent portion 102 (see FIG. 6) of the bend shaft 101 is embedded in the hosel 16 and the bend shaft 101 is turned slightly to the left or right, the real loft β1 decreases and the face angle α increases to Become. Therefore, as described above, when the protruding height of the bottom surface of the sole weight 26 is gradually increased, the face angle α also gradually changes in the negative direction, and the face surface that has become an open face returns to the original. become. By such a procedure, a golf club having a desired original loft β2 and a face angle α can be obtained.

  Next, a golf club head 2 with adjustable loft angle and face angle according to Embodiment 2 of the present invention will be described with reference to FIGS. In the second embodiment, the same elements as those in the first embodiment are denoted by the same reference numerals, and the description thereof will be omitted when the description is duplicated.

  A golf club with adjustable loft angle and face angle according to the second embodiment includes a head 2 and a shaft (not shown) with a grip attached to one end thereof. The shaft not shown is inserted into the hosel 16 of the head 2. It is worn.

  The sole surface 10 of the head 2 is provided with a sole recess 24 having a substantially trapezoidal shape in plan view. The sole recess 24 in plan view has a curved shape in which one side on the face 12 side is substantially parallel to the face 12 surface and one side on the back face 14 side is curved in parallel to the back face 14 surface. In addition, one side on the face 12 side is longer than one side on the back face 14 side, and both ends of one side on the face 12 side and both ends of one side on the back face 14 side are connected by straight lines. . The sole recess 24 is recessed substantially vertically, and the depth of the recess is deeper on the back face 14 side than on the face 12 side. In the second embodiment, the size of the substantially concave shape of the sole recess 24 is such that the length of the side on the face 12 side is about 35 mm, the length of the side on the back face 14 side is about 25 mm, and the side on the face 12 side and the back The distance from the side on the face 14 side is approximately 55 mm, the depth of the recess on the face 12 side is approximately 5 mm, and the depth of the recess on the back face 12 side is approximately 10 mm. The depth of the dent can be changed as appropriate. In addition, second bolt insertion holes 44 are formed on the bottom face of the sole recess 24 on the face 12 side and the back face 14 side, respectively, and a female screw is screwed on the inner surface of the second bolt insertion hole 44. It is engraved. Here, the back face 14 side is a second bolt insertion hole 44a, and the face 12 side is a second bolt insertion hole 44b.

  The sole weight 28 is formed so as to be fitted into the sole recess 24. That is, the surface of the sole weight 28 (the bottom surface when the sole weight 28 is inverted) has a trapezoid shape that is substantially the same as the shape of the sole recess portion 24 in plan view, and from the substantially trapezoidal edge of the sole weight 28. The peripheral wall rises, and the height of the peripheral wall on the back face 14 side is higher than the height of the peripheral wall on the face 12 side.

  Bolt through holes 42 are formed at positions on the surface of the sole weight 28 corresponding to the second bolt insertion holes 44a and the second bolt insertion holes 44b. The bolt through holes 42a and the bolt through holes 42b are respectively formed. It is said. The inner surface of the bolt through hole 42 is smooth, and two holes having different diameters with the same axis as the center are continuously provided. That is, due to the difference in diameter, a stepped portion is formed on the inner surface of the bolt through hole 42, and the larger diameter opens to the bottom surface of the sole weight 28. A second set screw insertion hole 46 is formed between the bolt through hole 42 a and the bolt through hole 42 b of the sole weight 28, and a female screw is formed on the inner surface of the second set screw insertion hole 46. Is threaded.

  The headed bolts 40, 40, each having a head portion and a male screw portion, pass through the bolt through hole 42a and the bolt through hole 42b, and the tips thereof are the second bolt insertion hole 44a and the second bolt insertion hole. The sole weight 28 is screwed into the sole recess 24 by being screwed into 44b. Then, in order for the head of the headed bolt 40 to engage with the stepped portion formed on the inner surface of the bolt through hole 42, the protruding height of the surface of the sole weight 28 from the sole surface 10 is adjusted. That is, the protruding height of the edge on the back face 14 side of the bottom surface of the sole weight 28 is adjusted by the screwed length of the headed bolt 40 that passes through the bolt through hole 42a and is screwed into the second bolt insertion hole 44a. The protruding height of the edge of the bottom surface of the sole weight 28 on the face 12 side is adjusted by the screwed length of the headed bolt 40 that passes through the bolt through hole 42b and is screwed into the second bolt insertion hole 44b. The

  Since the shape of the retaining screw 36 has been described in the first embodiment, the description thereof is omitted.

  A closed space is formed by screwing the sole weight 28 and the sole recess 24, and an adjustment weight 48 is accommodated and fixed in the closed space. The adjustment weight 48 in the second embodiment is integrally formed with the bottom surface of the sole weight 28. That is, the weight of the adjustment weight 48 is adjusted by appropriately adjusting the thickness of the bottom surface of the sole weight 28. Of course, the sole weight 28 and the adjustment weight 48 may be separated and fixed to a predetermined position in the closed space formed by the sole weight 28 and the sole recess 24.

  Next, the operation of the head 2 will be described. As for the terms of the loft angle, the face angle, and the sole inversion, since the contents described in the first embodiment can be applied to the second embodiment as they are, the description thereof is omitted, and the loft angle, the face angle, and the sole inversion are omitted. The reference numerals used for explanation are also used as they are.

  After the sole weight 28 is fitted into the sole recess 24, the headed bolts 40, 40 are passed through the bolt through holes 42a, 42b and further screwed into the second bolt insertion holes 44a, 44b. Then, the edge portion on the face 12 side of the bottom surface of the sole weight 28 is made substantially the same as the sole surface 10, and the protruding height of the edge portion on the back face 14 side of the bottom surface of the sole weight 28 is adjusted, whereby FIG. The line D shown in FIG. That is, the protruding height of the edge on the face 12 side of the bottom surface of the sole weight 28 is fixed substantially the same as that of the sole surface 10, and only the protruding height of the edge on the back face 14 side of the bottom surface of the sole weight 28 is changed. If so, the method for adjusting the loft angle and the face angle in the first embodiment described in the paragraph number (0028) and the paragraph number (0029) can be applied as it is.

  Similarly to Example 1, a golf club head 2 with adjustable loft angle and face angle according to Example 2 and a bend shaft disclosed in Japanese Patent Laid-Open No. 2002-282400 disclosed in “Patent Document 2” are provided. When used together, a golf club having a desired original loft β2 and face angle α can be obtained in the same manner as in the first embodiment, and the loft angle and face angle adjusting method in the second embodiment will be described. Is omitted.

  With the desired original loft β2 and face angle α, the stop screw 36 is screwed into the second stop screw insertion hole 46, and the tip of the stop screw 36 is pressed against the bottom surface of the sole recess 24. The sole weight 28 is fixed to the sole recess portion 24 by the stop screw 36 pressing the bottom surface of the sole recess portion 24. The protruding height of the sole weight 28 can be adjusted again by turning the stop screw 36 counterclockwise and separating the tip from the bottom surface of the sole recess 24 as in the first embodiment.

  Further, since the sole weight 28 according to the second embodiment is in surface contact with the ground, the sole weight 28 has little resistance to the lawn (ground) at the time of hitting, can be used for fairway wood, and the sole weight 28 The shape in plan view is substantially trapezoidal on the face 12 side and short on the back face 14 side, and the protruding height on the face 12 side is substantially the same as that of the sole surface 10, so swinging out during swing is very good.

  As described above, since the closed space is formed by the sole weight 28 and the sole recess 24, the adjustment weight 48 can be housed and fixed in this space. Thus, by attaching the adjustment weight 48, a golf club having a loft angle, a face angle and a balance suitable for each player can be obtained without attaching a balance weight to the outer surface of the golf club head. it can.

  In addition, as for the edge of the bottom surface of the sole weight 28 on the face 12 side, the protruding height of the sole surface 10 is fixed to be substantially the same, and therefore the face 12 side of the sole weight 28 is pivotally supported by the sole recess 26. The bolt through-holes 42 and 42 may be only the bolt through-hole 42a.

Claims (3)

The golf club whose loft angle and face angle can be adjusted has a sole recess 24 provided in the sole surface, and a sole weight 28 is fitted to the sole, and the bottom of the sole weight 28 is adjusted from the sole surface. A golf club having an adjustable loft angle and face angle,
Bolt insertion holes 44 for adjusting the loft angle and the face angle are formed on the bottom surface of the sole recess 24 of the sole surface on the face side and the back face side, and a female screw is threaded on the inner surface thereof.
The sole recess 24 has a substantially trapezoidal shape in which one side of the face side of the golf club head is substantially parallel to the face surface and substantially the same shape as the sole weight 28. At the position corresponding to the bolt insertion hole 44 of the sole recess 24, a bolt through hole 42 having a smooth inner surface is provided on the face side and the back face side, and is fixed between the bolt through hole 42a and the bolt through hole 42b. There is a screw insertion hole 46, and a female screw is threaded on the inner surface thereof, and a headed bolt 40 inserted into the sole weight 28 passes through the bolt through hole 42 on the face side and the back face side, respectively, and its tip Is screwed into the bolt insertion hole 44 of the sole recess 24 to adjust the protruding height of the bottom surface of the sole weight 28 relative to the sole surface. Then, the stop screw 36 screwed into the sole weight 28 is screwed into the stop screw insertion hole 46, and the tip of the stop screw 36 presses the bottom surface of the sole recess 24, so that the sole weight with respect to the sole surface is pressed. 28. A golf club having adjustable loft angle and face angle, wherein the protruding height of the bottom surface of 28 is fixed. The sole weight 28 is made of a metal or a synthetic resin, and has a bottom surface and a peripheral wall rising from an edge of the bottom surface in a substantially trapezoidal shape of the sole recess portion 24 in plan view. 2. The loft angle and the face angle of claim 1, wherein a protruding height of the edge portion on the face side is lower than a protruding height of an edge portion on the back face side of the bottom surface of the sole weight 28. A golf club that can be adjusted.
A golf club. The sole recess portion 24 has a shape in which the recess on the back face side is deeper than the face side so that the sole weight 28 is fitted, and a peripheral wall thereof is surrounded substantially vertically. 3. A golf club which can adjust the loft angle and the front face angle according to any one of 2 above.

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