JP6272205B2 - Golf club head - Google Patents

Description

  The present invention relates to a golf club, and more particularly to a golf club head suitable for an iron type golf club.

  In general, it is known that a head of an iron-type golf club is integrated with a face portion (face member) separate from the head body by bonding, welding, caulking, or the like to the head body. Such a head has been devised to lower the center of gravity and improve the directionality of the hit ball. For example, Patent Document 1 discloses the specific gravity of the metal constituting the face member and the metal constituting the head body. A structure is disclosed in which the weight is less than the specific gravity, the top side of the face member is exposed to the top surface and welded to the head body, and the lower end edge of the face member is exposed to the face surface and welded to the head body. .

  According to such a head structure, the top side of the head is not covered with a metal having a high specific gravity, and the sole side of the head is in a state of covering the face member with a metal having a high specific gravity. The weight of the top side is reduced and the center of gravity can be lowered.

JP 2007-289513 A

  However, if the top region is replaced with a metal having a high specific gravity to make a face member with a low specific gravity, the surplus weight is very small and a large reduction in the center of gravity cannot be achieved. In particular, if the position of the center of gravity of an iron club is high, the position of the sweet spot when addressed becomes high, and the ball is often hit on the sole side of the sweet spot when hit. That is, in consideration of the size of the ball, the position of the hitting point is about 15 mm from the ground, but if the sweet spot is higher than that, it tends to hit on the sole side (also referred to as a so-called top). Will become higher and the feel will be worse.

  The present invention has been made based on the above-described problems, and an object of the present invention is to provide a golf club head capable of efficiently reducing the center of gravity.

  In order to achieve the above-described object, the present invention includes at least two constituent members, and a face member having a hitting surface is fixed to a head body having a top portion, a toe portion, a heel portion, and a sole portion. A golf club head, wherein the head main body is integrated with a top side frame portion, a toe side frame portion, a heel side frame portion, the toe side frame portion and the heel side frame portion in a toe / heel direction. A first member composed of a frame body that defines an opening, and a second member that is fixed to the lower surface of the lower frame portion and has a higher specific gravity than the first member. The first member and the second member each include a receiving portion for receiving the face member, and the second member forms a sole surface of the head body. .

According to the golf club head having the above-described configuration, the head main body is fixed to the lower surface of the first frame member that defines the opening and the lower frame portion that constitutes the frame member. A second member having a high specific gravity, and the second member having a high specific gravity is fixed to the lower surface of the lower frame portion of the first member, so that the center of gravity of the head body can be efficiently lowered. It becomes possible. In addition, since the second member having a high specific gravity includes a receiving portion that receives the face portion, the position of the center of gravity shifts forward, thereby efficiently reducing the position of the sweet spot (height from the ground). Is possible. That is, by lowering the position of the sweet spot, it becomes easier to catch the ball near the sweet spot, and the hit feeling can be improved.
In the configuration described above, the receiving portion for receiving the face member corresponds to various fixing methods such as a structure for receiving the peripheral edge around the face, a structure for press-fitting the face, and a structure using caulking. In addition, the second member forms the sole surface of the head main body, but in a configuration in which the sole side of the face member is bent (L-shaped face member), the bent portion forms a part of the sole surface. May be.

  According to the present invention, a golf club head capable of efficiently lowering the center of gravity can be obtained.

1 is a front view showing a first embodiment of a golf club head (iron-type head) of the present invention. The figure which looked at the golf club head shown in FIG. 1 from the back side. The figure which looked at the golf club head shown in FIG. 1 from the toe side. The front view which shows the frame which comprises the head main body which removed the face member and the high specific gravity material. The figure which looked at the frame shown in Drawing 4 from the back side. The figure which looked at the frame shown in Drawing 4 from the toe side. The figure which looked at the frame shown in Drawing 4 from the sole side. The perspective view which shows the state which mounts | wears a frame with a high specific gravity material. FIG. 3 is a front view of the head body (with the frame body and high specific gravity fixed) with the face member removed. (A) And (b) is a figure which shows typically that the position of a sweet spot falls by the method of fixation of a high specific gravity material. It is a figure which shows 2nd Embodiment of the golf club head which concerns on this invention, and sectional drawing of a center part. The figure which looked at the golf club head shown in FIG. 11 from the sole side. The perspective view which shows 3rd Embodiment of the golf club head based on this invention. FIG. 14 is a cross-sectional view of the center portion of the golf club head shown in FIG. 13.

Embodiments of a golf club head according to the present invention will be described below with reference to the accompanying drawings.
1 to 3 show a first embodiment in which a golf club head according to the present invention is applied to an iron-type golf club, FIG. 1 is a front view, FIG. 2 is a view seen from the back side, and FIG. 3 is a view from the toe side.

  A golf club head (hereinafter referred to as a head) 1 according to the present embodiment is configured to be attached to an iron club, and a hosel 3A to which a distal end of a shaft (not shown) is inserted and fixed is a heel. The head main body 3 formed on the side and a face member (face portion) 50 fixed to the front surface of the head main body 3 are provided. The head body includes a top portion 3a, a toe portion 3b, a heel portion 3c, and a sole portion 3d as a basic structure.

  The constituent materials of the head main body 3 and the face member 50 are not particularly limited. For example, the head main body 3 and the face member 50 are integrally formed by casting using a metal material such as titanium, titanium alloy, stainless steel, carbon steel, tungsten, or tungsten alloy. It is possible to form.

  The head body 3 is formed by at least two components. In the present embodiment, the head body 3 is provided on a frame body (first member) 5 that defines a substantially elliptical opening 20 and on a lower side (sole side) of the frame body 5. It is composed of two members, a high specific gravity material (second member) 10 that is fastened and formed of a material having a higher specific gravity than the frame body 5.

  In this case, the frame 5 can be formed of, for example, stainless steel (specific gravity 7.8), and includes a top side frame 5a, a toe side frame 5b, a heel side frame 5c, and a toe side. A lower frame portion 5d that is integrated with the frame portion 5b and the heel side frame portion 5c and extends in the toe-heel direction, and includes the top side frame portion 5a, the toe side frame portion 5b, The heel side frame portion 5c constitutes a top portion 3a, a toe portion 3b, and a heel portion 3c of the head main body 3, respectively. The hosel 3A is integrally formed with the heel side frame 5c.

  The high specific gravity material 10 can be formed of a material having a specific gravity larger than that of the frame, for example, a tungsten alloy (specific gravity 9 to 9.8), and is fixed to the lower surface of the lower frame portion 5d (welding, The sole portion 3d of the head main body 3 is configured by bonding, caulking, or the like. That is, the high specific gravity material 10 constitutes the sole portion 3d of the head main body 3 while being fixed to the lower surface of the lower frame portion 5d, and the surface exposed below the sole surface 3B is in contact with the ground surface. Form.

  The sole surface 3B formed by the high specific gravity material 10 is raised to a substantially middle region of the toe portion 3b as indicated by reference numeral P1 in FIGS. 2 and 3, and as indicated by reference numeral P3 in FIG. The heel portion 3c extends to the lower end region. In this case, the frame 5 and the high specific gravity material 10 have the sole surface 3B, the surface of the toe side frame portion 5b, the surface of the heel side frame portion 5c, and the surface of the lower frame portion 5d in a state where both are fixed. It is formed to be flush.

  Here, the configuration of the frame 5 and the high specific gravity material 10 will be described with reference to FIGS. 4 to 9 together. In these drawings, FIG. 4 is a front view showing a frame constituting the head body from which the face member and the high specific gravity material are removed, FIG. 5 is a view of the frame shown in FIG. 4 as viewed from the back side, and FIG. FIG. 7 is a view of the frame body shown in FIG. 4 viewed from the toe side, FIG. 7 is a view of the frame body shown in FIG. 4 viewed from the sole side, FIG. 8 is a perspective view showing a state in which a high specific gravity material is attached to the frame body, FIG. 9 is a front view of the head body (with the frame body and high specific gravity fixed) with the face member removed.

  The frame body 5 and the high specific gravity material 10 are respectively provided on the front side with peripheral edges on the back surface of the face member 50 (top-side peripheral part 50a, toe-side peripheral part 50b, heel-side peripheral part 50c, sole-side peripheral part 50d). It is provided with a receiving part that is attached to and fixed. In this case, the receiving portion has a structure having a ring-shaped flat surface over one circumference, and is formed on the frame body 5 side and on the front surface of the top side frame portion 5a as shown in FIG. A top side receiving portion 6a, a toe side receiving portion 6b formed on the front surface of the toe side frame portion 5b, and a heel side receiving portion 6c formed on the front surface of the heel side frame portion 5c are formed. Moreover, as shown in FIG. 9, the sole side receiving part 6d is formed in the high specific gravity material 10 side. In the present embodiment, the sole side receiving part 6d of the high specific gravity material 10 is configured to receive a part (lower part) of the toe side peripheral edge part 50b of the face member 50.

  The peripheral portions 50a to 50d of the plate-like face member 50 are in contact with the top side receiving portion 6a, the toe side receiving portion 6b, the heel side receiving portion 6c, and the sole side receiving portion 6d which are ring-shaped flat surfaces. The head body 3 and the face member 50 are integrated to form the head 1 by attaching and welding (or bonding). A plurality of score lines 51 are formed on the hitting surface 50A of the face member 50 along the toe-heel direction.

  The head body 3 formed in the ring shape has a top portion 3a, a toe portion 3b, a heel portion 3c, and a sole portion 3d having predetermined thicknesses in the face-back direction, respectively. Depending on the shape, the head body 3 has a structure in which the opening 20 is formed on the rear side of the face member 50, that is, a so-called cavity structure. Further, the front surface of the head body 3 formed in the ring shape is formed so as to be inclined at a predetermined angle with respect to a horizontal plane, and is configured to fix the face member 50 at a predetermined loft angle. In this case, in the configuration of the present embodiment, the top portion 3a is bent so that the tip side extends downward and the tip side hangs downward to form a bent portion 3a '. The toe portion 3b is also the same as the top portion. In addition to extending to the back side, the tip side is bent toward the center to form a bent portion 3b '.

  Further, the heel portion 3c is formed with a regulation wall 3e having a thickness of the face member 50 so that the heel side edge 50c ′ of the plate-like face member 50 is applied thereto. The peripheral edge portions 50a to 50d are brought into contact with the receiving portions (the top side receiving portion 6a, the toe side receiving portion 6b, the heel side receiving portion 6c, and the sole side receiving portion 6d), and the heel side edge 50c ′ is set to the restriction wall. It is welded (adhered) in a state applied to 3e.

  The high specific gravity member 10 (sole portion 3d) is gradually raised upward while extending to the back side (a rising portion 10c is formed), and an upper end portion thereof is fixed to the lower frame portion 5d. And the lower frame portion 5d.

  In this case, the high specific gravity material 10 of the present embodiment is formed with a thin portion 10a protruding toward the face member side in the toe-heel direction, and the sole side receiving portion 6d is formed on the front end surface thereof. Forming. The base end of the thin portion 10a is raised substantially vertically to form a vertical wall 10b, and the rising portion 10c is integrally formed from the upper end of the vertical wall 10b. For this reason, the face member 50 is supported by a portion of the thin portion 10a (the sole side receiving portion 6d that is the front end surface thereof) and has the same thickness as the top side receiving portion 6a and the toe side receiving portion 6b. Since it is supported by the heel side receiving part 6c, the support opening becomes large, and it is supported by the thin part and is easily bent. Further, the thickness can be increased from the vertical wall 10b to the rising portion 10c, and the center of gravity can be effectively lowered.

  As described above, the top portion 3a and the toe portion 3b extend rearward along the peripheral edge portion of the face member 50, and the end portions thereof are bent toward the center side. As for the material 10, the thickened portion is raised toward the back side, but the bent state, the rising state, the shape thereof, and the like can be appropriately changed.

  In the configuration described above, the high specific gravity material 10 has only to be disposed on the lower side of the head body 3 in order to lower the center of gravity of the head. That is, with respect to the frame body 5 configured as described above, as shown in FIG. 9, the lower frame portion 5d has a height of the heel side of the head body from the middle position of the toe side height of the head body. It is preferable that the toe-heel direction is formed across the intermediate position. Specifically, when the joint point on the toe side of the lower frame portion 5d and the high specific gravity material 10 is P1, and the joint point on the heel side is P2, each joint point P1, P2 is the height of the head book 3. It exists in an intermediate position (P1 is 10 to 50% of the height of the toe side of the head body, and P2 is 10 to 50% of the height of the heel side of the head body, so that the center of gravity can be efficiently lowered). As described above, by forming the lower frame portion 5d, it is possible to effectively reduce the center of gravity of the head body.

  Further, the high specific gravity material 10 of the present embodiment is formed so as to receive the sole side edge portion 50d of the face member 50 and a part of the toe side edge portion 50b (received between P1 and P3 in FIG. 9). On the heel side, the face member 50 is received by the heel side frame 5c of the frame 5 (the inner side surface 5h of the heel side frame 5c). With this configuration, the contact area between the high specific gravity material 10 and the frame body 5 is increased, and the high specific gravity material 10 and the frame body 5 are fixedly attached so as to contact the heel side. Strength can be improved.

  In this case, the high specific gravity material 10 may be structured to receive a part of the heel side edge portion 50c of the face member 50 (up to the position indicated by reference numeral P2 in FIG. 9). That is, by increasing the portion of the high specific gravity material 10 that receives the face member 50, it is possible to change the hit feeling. For example, when the high specific gravity material 10 is made of a tungsten alloy or the like, the effect of absorbing vibration at the time of hitting the ball is increased, and a soft hit feeling can be obtained. In the iron head, since the hitting position is generally about 15 mm or less from the ground, the position (the positions P1 and P2 in FIG. 9) for receiving the face member of the high specific gravity material 10 is 15 mm from the ground (sole surface). The following is preferable. In the present embodiment, the entire sole side edge 50c of the face member 50 and the lower part of the toe side edge 50b are received so that a low center of gravity can be achieved effectively.

  The high specific gravity material 10 and the lower frame portion 5d may be fixed to each other between flat surfaces, but in this embodiment, a stepped surface extending in the toe-heel direction on the lower surface 5g of the lower frame portion 5d. (It is preferable to form a circular arc in cross section to increase the contact area) 5f is formed, and the upper surface 10g of the high specific gravity material 10 extends in the toe-heel direction and is in close contact with the step surface 5f. A protruding contact surface (rib) 10f is formed. That is, when the high specific gravity material 10 is fixed to the lower frame portion 5d, the upper surface 10g and the contact surface 10f of the high specific gravity material 10 are in close contact with the lower surface 5g and the step surface 5f of the lower frame portion 5d, respectively. Since the inner side surface 10h is in close contact with and fixed to the inner side surface 5h of the heel side frame portion 5c, the high specific gravity material 10 is firmly fixed to the frame body 5. Is possible.

  In addition, about the shape of the fixation surface of the high specific gravity material 10 and the frame 5, it can deform | transform suitably and you may make it fix by caulking, for example besides adhesion | attachment or welding.

  According to the head structure described above, the head main body 3 is fixed to the lower surface of the frame 5 that defines the opening 20 and the lower frame portion 5d that constitutes the frame, and has a higher specific gravity than the frame. Therefore, it is possible to concentrate heavy objects on the lower side of the head body, and to efficiently lower the center of gravity of the head body 3. In particular, since the high specific gravity material 10 forms the sole surface as it is, it is possible to concentrate heavy objects more efficiently on the lower side. Further, since the frame 5 and the high specific gravity material 10 are configured to receive the peripheral edge of the back surface of the face member 50, the face member 50 is in a state of being supported so as to make maximum use of the bending, and the repulsive force is exerted. It becomes possible to improve.

Further, as described above, by receiving the face member 50 with the high specific gravity material 10, the sweet spot can be efficiently lowered as shown in FIG.
10A shows a structure in which the face member is received by the high specific gravity material 10 as in the above-described embodiment, and FIG. 10B shows a structure in which a weight member is disposed on the sole side (the weight member is the sole). The face member of the side is not received).

  As shown in FIG. 10 (a), the structure in which the face member is received by the weight member has a slightly lower center of gravity than the structure in which the face member is not received by the weight member as shown in FIG. 10 (b). The center of gravity depth becomes shallow (D1 <D2). In both cases, the height of the center of gravity is at the same position (H1 = H2). When the depth of the center of gravity becomes shallower, the position of the intersection (sweet spot S) when the perpendicular is made to the face member is lowered accordingly (H1 ′ <H2 ′). That is, the sweet spot S can be lowered by the height H shown in the drawing by configuring the face member to be received by the weight member.

  Thus, according to the configuration of the present invention, since the position of the sweet spot can be lowered efficiently, it becomes easy to set the sweet spot near 15 mm where the hit ball is most likely to be hit, and the ball is caught at the time of hitting the ball. In addition to being easy, the hit feeling can be improved and the flight distance can be improved.

Next, a second embodiment of the present invention will be described with reference to FIG. 11 and FIG.
In these drawings, FIG. 11 is a cross-sectional view of the central portion of the golf club head, and FIG. 12 is a view of the golf club head head shown in FIG. In the following description, detailed description of the same components as those in the above-described embodiment will be omitted.

Similar to the above-described embodiment, the high specific gravity material 10 is fixed to the lower frame portion of the frame body, and the face member 50 is formed in a so-called L-shape by bending the sole side toward the main body side. . The lower surface 55a of the bent portion 55 of the face member 50 forms a part of the sole surface 3B, and the bent end surface 55d on the main body side is abutted against the front end surface (receiving portion) 6d of the high specific gravity material 10 and stops. It is worn. That is, in the sole portion 3d, the lower surface of the high specific gravity material and the lower surface of the bent portion 55 are flush with each other to constitute the sole surface 3B.
As described above, the high specific gravity material 10 only needs to be configured to receive the face member 50, and the same effect can be obtained even if the face member is formed in an L shape.

  13 and 14 are views showing a third embodiment of the present invention. FIG. 13 is a perspective view of the golf club head, and FIG. 14 is a cross-sectional view of the central portion of the golf club head shown in FIG. is there.

In the present embodiment, the face member 50 is formed in a plate shape, and is formed in the frame body 5 and the high specific gravity material 10 and has a recessed step (top side receiving portion 6a ′, toe side) having the same shape as the face member. It is fixed by being press-fitted into the receiving portion 6b ', the heel side receiving portion 6c', and the sole side receiving portion 6d 'formed on the high specific gravity material. In other words, the receiving portion of the face member 50 according to the present embodiment has a structure that is fixed to the frame body 5 and the high specific gravity material 10 by press-fitting (may be press-fitted by caulking). All form a sole surface 3B.
As described above, the method of fixing the high specific gravity material 10 (configuration of the receiving portion) can be configured by press-fitting or caulking in addition to the surface receiving and the abutting.

As mentioned above, although embodiment of the golf club which concerns on this invention was described, this invention is not limited to above-described embodiment, Various deformation | transformation is possible.
About the high specific gravity material 10 fixed to the above-mentioned lower side frame part, what is necessary is just a material with higher specific gravity than a frame, and although the shape is not specifically limited, By increasing the thickness, it is possible to improve the moment of inertia, thereby suppressing the blur of the head body at the time of hitting and improving the directionality.

  Further, the shape of the high specific gravity material 10 and the fixing method to the frame 5 can be modified as appropriate. For example, the face member 50 may be cup-shaped and fixed to the receiving portion of the head body. In the embodiment described above, the head body 3 is constituted by two members (the frame body 5 and the high specific gravity material 10). However, the frame body 5 is constituted by a plurality of members, or the high specific gravity material 10 is provided. A plurality of members may be used. Further, for the frame, a reinforcing portion may be separately formed in order to improve the strength.

DESCRIPTION OF SYMBOLS 1 Head 3 Head main body 3a Top part 3b Toe part 3c Sole part 3d Heel part 3B Sole surface 5 Frame (1st member)
5a Top side frame 5b Toe side frame 5c Heel side frame 5d Lower frame 10 High specific gravity material (second member)
50 Face members

Claims (5)

A golf club head comprising at least two component members, wherein a face member having a hitting surface is fixed to a head body having a top portion, a toe portion, a heel portion, and a sole portion,
The head body is
A top frame, a toe frame, a heel frame, and a lower frame that is integrated with the toe frame and the heel frame and extends in the toe-heel direction; A first member composed of a frame body that defines
A second member fixed to the lower surface of the lower frame portion, having a higher specific gravity than the first member;
Have
Each of the first member and the second member includes a receiving portion for receiving the face member, and the second member forms a sole surface of a head body.   The lower frame portion is formed so as to cross the toe / heel direction from an intermediate position of a toe side height of the head body to an intermediate position of a heel side height of the head body. The golf club head according to claim 1. Wherein the second member, the thin-walled portion projecting toward the face member side over the toe-heel direction is formed, prior to the end face of the thin portion constitutes the receiving portion of the face member, the thin portion 3. The golf club head according to claim 1 , wherein a base end of the golf club head is raised substantially vertically to be thickened . 4.   The said 2nd member is formed in the shape which receives the sole side edge part of the said face member, and a part of toe side edge part, The Claim 1 characterized by the above-mentioned. Golf club head. The lower surface of the lower frame has a step surface extending in the toe-heel direction,
5. The golf club head according to claim 1, wherein an upper surface of the second member includes an adhesion surface that is adhered and fixed to the step surface.