Golf club head

Abstract

This product provides a golf club head that allows for a wide range of adjustments to the center of gravity and weight, thereby stabilizing the weight attached to it. [Solution] The device comprises a head body 10 having a hosel 2 into which a shaft is inserted and a recess 11 formed therein, a sole member 20 fixed to the head body 10 and covering the recess 11, a positioning structure 21 for positioning the head body 10 and the sole member 20, a plate 50 sandwiched and fixed between the head body 10 and the sole member 20, and a plurality of weight adjustment weights 30 disposed on at least one of the sole member side of the head body 10 and the head body 10 side of the sole member. The plate 50 engages with the plurality of weight adjustment weights 30 to fix the position of the plurality of weight adjustment weights 30.

Description

Technical Field

[0001] The present invention relates to a golf club head, and more particularly to a golf club head capable of adjusting the center of gravity and weight.

Background Art

[0002] As a golf club head, a configuration that enables adjustment of the center of gravity position and weight (including weight balance) is known. For example, Patent Document 1 discloses a configuration in which a concave portion is formed on the sole of the head body, and a weight (a cover plate formed with a protruding portion) is attached to that portion. Further, Patent Document 2 discloses a configuration in which an inclined portion is formed on the sole of the head, and a rotatable and / or removable insert member is fixed thereto. This insert member has a plurality of weights that can be exchanged, and adjusts the position of the center of gravity of the golf club head in the horizontal plane and / or the vertical plane by eccentrically disposing the weights with respect to the rotation center. Further, Patent Document 3 discloses a configuration including a head body and a sole member that is detachable from the head body, and an opening for weight adjustment is formed on the flat surface on the head body side of the head body.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Patent Document 3

Summary of the Invention

Problems to be Solved by the Invention

[0004] The golf club head disclosed in Patent Document 1 above has limitations in adjusting the center of gravity because the protruding weight portion cannot be removed, and the positioning of the cover plate coincides with the function of the weight. The golf club head disclosed in Patent Document 2 above has limitations in the outer diameter shape of the sole, so only a limited range of center of gravity adjustment is possible. Although the golf club head disclosed in Patent Document 3 above allows the user to adjust the center of gravity and weight, the weight member is attached through an opening formed in the sole, so the attachment state of the weight may not be stable.

[0005] The present invention aims to provide a golf club head that allows for a wide range of adjustments to the center of gravity and weight, thereby stabilizing the attached weight. [Means for solving the problem]

[0006] The present invention relates to a golf club comprising: a head body having a recess formed in a hosel into which a shaft is inserted; a cover member fixed to the head body and covering the recess; a positioning structure for positioning the head body and the cover member; a plate sandwiched and fixed between the head body and the cover member; and a plurality of weight-adjusting weights disposed on at least one of the cover member side of the head body and the head body side of the cover member, wherein the plate engages with the plurality of weight-adjusting weights to fix the position of the plurality of weight-adjusting weights.

[0007] The golf club head with the above configuration is designed so that multiple weight-adjusting weights can be placed on at least one of the cover member side of the head body and the head body side of the cover member, allowing for a wide range of adjustments to the center of gravity and weight of the head body. Furthermore, the multiple weight-adjusting weights engage with a plate that is sandwiched and fixed between the head body and the cover member. As a result, the placement positions of the multiple weight-adjusting weights are fixed, preventing the attached weight-adjusting weights from shifting position and ensuring stability. [Effects of the Invention]

[0008] According to the present invention, a golf club head is obtained that allows for a wide range of adjustments to the center of gravity and weight, and that stabilizes the weight attached to it. [Brief explanation of the drawing]

[0009] [Figure 1] A plan view showing one embodiment of a golf club head (a utility golf club head). [Figure 2] Figure 1 shows a view of the golf club head from the heel side. [Figure 3] Figure 1 shows a golf club head viewed from the toe side. [Figure 4] Figure 1 shows a golf club head viewed from the sole side. [Figure 5] This is a first embodiment showing the relationship between multiple weight adjustment weights and a plate, where (a) is an exploded perspective view of the golf club head viewed from the sole side, and (b) is an exploded perspective view of the golf club head viewed from the crown side. [Figure 6] These are schematic diagrams showing the clamping state of the plates, where (a) is a diagram showing the first embodiment, (b) is a schematic diagram showing the first modified example, (c) is a schematic diagram showing the second modified example, and (d) is a schematic diagram showing the third modified example. [Figure 7] (a) is a diagram showing the face-backline passing through the center of the sole member, and (b) is a diagram showing the toe-heel line passing through the center of the sole member. [Figure 8] (a) to (d) are diagrams showing examples of the arrangement of weights for weight adjustment. [Figure 9] This diagram shows an example where weight adjustment weights are placed on the toe side. [Figure 10] This diagram shows an example where weight adjustment weights are placed on the heel side. [Figure 11] This diagram shows an example where weight adjustment weights are placed on the face side. [Figure 12] This diagram shows an example where weight adjustment weights are placed on the back side. [Figure 13]A second embodiment showing the relationship between a plurality of weight adjustment weights and a plate, where (a) is an exploded perspective view of the golf club head seen from the sole side, and (b) is an exploded perspective view of the golf club head seen from the crown side. [Figure 14] A third embodiment showing the relationship between a plurality of weight adjustment weights and a plate, where (a) is an exploded perspective view of the golf club head seen from the sole side, and (b) is an exploded perspective view of the golf club head seen from the crown side. [Figure 15] A fourth embodiment showing the relationship between a plurality of weight adjustment weights and a plate, where (a) is an exploded perspective view of the golf club head seen from the sole side, and (b) is an exploded perspective view of the golf club head seen from the crown side. [Figure 16] A fifth embodiment showing the relationship between a plurality of weight adjustment weights and a plate, where (a) is an exploded perspective view of the golf club head seen from the sole side, and (b) is an exploded perspective view of the golf club head seen from the crown side. [Figure 17] A sixth embodiment showing the relationship between a plurality of weight adjustment weights and a plate, where (a) is an exploded perspective view of the golf club head seen from the sole side, and (b) is an exploded perspective view of the golf club head seen from the crown side. [Figure 18] A seventh embodiment showing the relationship between a plurality of weight adjustment weights and a plate, where (a) is an exploded perspective view of the golf club head seen from the sole side, (b) is an exploded perspective view of the golf club head seen from the crown side, and (c) is a central cross-sectional view of the golf club head. [Figure 19] An eighth embodiment showing the relationship between a plurality of weight adjustment weights and a plate, where (a) is an exploded perspective view of the golf club head seen from the sole side, (b) is an exploded perspective view of the golf club head seen from the crown side, and (c) is a central cross-sectional view of the golf club head. [Figure 20] A ninth embodiment showing the relationship between a plurality of weight adjustment weights and a plate, where (a) is an exploded perspective view of the golf club head seen from the sole side, (b) is an exploded perspective view of the golf club head seen from the crown side, and (c) is a central cross-sectional view of the golf club head. [Figure 21](a) to (c) are diagrams showing examples in which the shapes and arrangement modes of a plurality of weights are changed.

Embodiments for Carrying out the Invention

[0010] Hereinafter, embodiments of the golf club head of the present invention will be described with reference to the accompanying drawings. In the embodiments described below, a hollow wood - type golf club head will be exemplified and described.

[0011] FIGS. 1 to 5 are diagrams showing a first embodiment. The golf club head 1 of the present embodiment includes a head body 10 having a hosel 2 for fixing the tip of a shaft (not shown), and a cover member (sole member 2 in this embodiment) that covers a recess 11 formed on the sole side of the head body 10, and the sole member 20 is detachable from the head body 10. In the embodiments described below, the state in which the sole member 20 is removed is defined as the "head body".

[0012] As is generally known, the head body 10 has a structure in which a plurality of outer shells formed by casting, forging, etc. are integrated by welding, adhesion, etc., and the sole member 20 is configured to be detachable from the head body 10 thus integrated. Note that a plurality of types of sole members 20 may be prepared according to the user's preference, such as those with different sole shapes, different overall weights, etc.

[0013] The head body 10 includes a face portion 12 having a hitting surface (face surface) 12a, a crown portion 13 extending rearward from the upper edge of the face portion 12, a sole portion 14 extending rearward from the lower edge of the face portion 12, a back portion 15 facing the face portion 12, and a toe portion 16 and a heel portion 17 passing from the face portion 12 through the back portion 15.

[0014] The back portion 15, toe portion 16, and heel portion 17 connect the edges of the crown portion 13 and sole portion 14, and are therefore also referred to as side portions. In this case, the sole portion 14 has a recess 11 formed therein, and the sole member 20 is attached to and detached from the area of ​​the recess 11.

[0015] The head body 10 can be constructed by joining multiple outer shell members (outer shells) that are divided at various positions by welding, bonding, etc. Each outer shell member can be integrally formed by casting or press molding, for example, titanium alloy, aluminum alloy, magnesium alloy, etc., and the head body 10 is created by welding the edges of each. In this case, the outer shell members that make up the head body 10 may be formed by integrally forming multiple members, or partial components of each member, by casting, etc., and then fixing them by welding, bonding, etc. For this reason, the boundaries of each part do not necessarily have to be clearly demarcated by ridges, and the back part 15, toe part 16, and heel part 17 may be composed of curved surfaces that continuously connect the crown part 13 and the sole part 14 without boundaries.

[0016] Furthermore, the material of the crown portion 13 may be CFRP (carbon fiber reinforced plastic). A crown portion 13 made of such material can be constructed, for example, by molding CFRP into a plate shape using a press and then bonding it to close the opening formed in the crown portion.

[0017] The face portion 12 is integrally formed from, for example, titanium, titanium alloy, etc., by press working, NC machining (including CNC machining), or forging, and in addition to the welding described above, it can be joined to other outer shell members by, for example, laser welding, brazing, or bonding. It is possible to do so. The face portion 12 is formed in a cup shape and can be constructed by joining it to the openings formed at the front ends of the crown portion 13, sole portion 14, and side portions (toe portion 16 and heel portion 17).

[0018] Therefore, the face portion 12 constitutes part of the crown portion, side portion, and sole portion. Regarding the face portion 12, the hitting surface 12a may be formed as a plate and fixed to an opening formed in the face portion, or a plate-shaped face member may be joined to the front end openings of the crown portion, sole portion, and side portion. Furthermore, for the head body 10, in the case of a small-capacity head (utility head), a stainless steel alloy may be used, including the face member.

[0019] Grooves 18a and 18b are formed along the toe-heel direction on the front end of the sole portion 14 and the front end of the crown portion 13 of the head body 10. By forming such grooves, the impact when the ball is struck is reduced, and the face portion 12 becomes more flexible, which improves the distance of the shot.

[0020] The head body 10 and the sole member 20 are provided with a positioning structure for positioning the sole member 20 and a fixing structure for joining and fixing the positioned sole member 20 to the head body 10. As shown in Figure 5(b), the positioning structure of this embodiment includes a positioning projection 20d on the sole member 20 that protrudes toward the head body, a fitting hole (plate hole) 51a formed in the plate 50 (described later), and a body hole 27 formed in the head body 10. The fixing structure (joining point) 21 includes a plurality of screw holes 22 formed in the sole member 20, screws 24 that are screwed into each screw hole 22, a plurality of through holes 52 formed in the plate 50, and a plurality of screw holes 23 formed in the head body 10. In this embodiment, the screw holes 22 and 23 are formed in a total of three locations: two on the face side of the sole member 20, spaced apart in the toe-heel direction, and one in the center of the back side. These constitute the fixing structure (joining point of the sole member 20) 21.

[0021] As a result, the sole member 20 is positioned relative to the head body 10 by fitting the positioning projection 20d of the positioning structure into the fitting hole 51a formed in the plate 50 and then fitting it into the body hole 27 formed in the head body 10. In this state, the screw hole 22, the through hole 52 formed in the plate 50, and the screw hole 23 formed in the head body 10 are aligned, and the screw 24 is screwed in there, thereby fixing (joining) the sole member 20 in a positioned state relative to the head body 10.

[0022] Furthermore, it is preferable that flat surfaces 22A and 23A are formed in the areas surrounding the screw holes 22 and 23 of the head body 10 and the sole member 20 so that they face each other when positioned and fixed. In addition, the screw 24 is configured to be rotated by a jig or the like.

[0023] Furthermore, the head body 10 and sole member 20 of this embodiment are equipped with an anti-rotation structure comprising the inner wall 11a of the recess 11 of the sole portion 14 and the outer wall 20a of the sole member 20. That is, when the sole member 20 is fitted into the recess 11, the inner wall 11a and the outer wall 20a face each other, restricting the rotation of the sole member 20, and in this state the flat surfaces 22A and 23A come into contact with each other. Then, by screwing in the screw 24 while the two surfaces are in contact, the sole member 20 is securely positioned and fixed to the head body 10 without any looseness.

[0024] Furthermore, one or more cutouts or openings may be formed in the bottom 11b of the recess 11 to reduce the weight of the bottom (in Figure 5, there are two openings 11c of different shapes). (As shown). By forming such an opening 11c, it is possible to lower the center of gravity of the head body 10.

[0025] Furthermore, in this embodiment, a recess 20A is formed on the inner surface of the sole member 20, radially inward from the flat surface 23A. As will be described later, this recess 20A is formed to lower the center of gravity by positioning the weight adjustment weights 30 on the ground surface side when multiple weight adjustment weights 30 are placed, and to stably fix the multiple weight adjustment weights. For this reason, it is preferable that the bottom portion 20c of the recess 20A is formed as a flat surface so that the surface of the weight adjustment weight 30 is in contact with the surface and the placement state is stable.

[0026] A plate (washer) 50 is sandwiched and fixed between the head body 10 and the sole member 20. While sandwiched and fixed between the head body 10 and the sole member 20, this plate 50 engages with each of the multiple weight adjustment weights 30 (held by screwing, press-fitting, etc.) and has the function of fixing the placement positions of the multiple weight adjustment weights 30.

[0027] When the plate 50 is sandwiched between the head body 10 and the sole member 20, its position becomes fixed. In this embodiment, when the sole member 20 is positioned relative to the head body 10 using the positioning structure described above, and the sole member 20 is fixed relative to the head body 10 using the fixing structure described above, the plate 50 becomes sandwiched between the head body 10 and the sole member 20.

[0028] Furthermore, the surface of the plate 50 has a protrusion 50a (a protrusion 50a having the same thickness T as the plate: Figure 6) that can fit into the recess 20A of the sole member 20, and on the sole side of the plate 50, multiple engagement holes 53 are formed over the entire surface so that multiple weight adjustment weights 30 can be fitted into each of them. By forming multiple such engagement holes 53, the number and position of the weight adjustment weights 30 can be finely adjusted, making it possible to finely adjust the center of gravity and weight balance. Note that the multiple engagement holes 53 may be bottomed or through.

[0029] The plate 50 has a thickness T such that the protruding portion 50a fits into the recess 20A of the sole member 20, and the area surrounding the protruding portion 50a is flange-shaped, with the flange portion being sandwiched between the head body 10 and the sole member 20. In other words, by making the surrounding area flange-shaped to reduce the thickness and fitting the thicker portion (protruding portion 50a) into the recess 20A, it is possible to stably hold the plate 50.

[0030] In this case, the thickness T of the protrusion 50a should be sufficient to prevent deformation or damage to the plate 50 when multiple weight-adjusting weights 30 are fixed to it. For example, the thickness T of the protrusion 50a should be about 2 to 6 mm, and the weight should be about 3 to 6 g. Furthermore, it is preferable to use an elastic material such as rubber or elastomer for forming the plate 50, with a Shore hardness of about 30 to 90 degrees. That is, by using such a material, it is possible to ensure durability, strength, vibration damping, dustproofness, and waterproofness. It is preferable to form the plate 50 in a thin plate shape, except for the protrusion 50a (the part with thickness T), the through hole 52 (joining point), and the part where the weight-adjusting weights are held (the part where the engagement hole 53 is formed). Alternatively, the entire plate 50 may be formed to fit into the recess 20A of the sole member 20 at the same height, or it may be formed to protrude slightly from the recess 20A, as shown in Figure 6(a). Furthermore, depending on the method of engaging (holding) the weight adjustment weight, it may also be formed in a plate shape.

[0031] Each of the aforementioned weight-adjusting weights 30 is, for example, cylindrical in shape and weighs approximately 0.2 to 5 g (the weight of each weight-adjusting weight 30 can be changed and is not limited to the specific gravity of the constituent material). The weight adjustment weight 30 has a certain weight, and numerous engagement holes 53 are formed on the surface of the plate 50. In this case, the weight adjustment weight 30 may be made into the cylindrical shape described above and be constructed to be press-fitted into the engagement holes 53 of the plate 50, or it may be made into a male screw type and connected to the female screw type engagement holes 53. In other words, as long as the fixed state of the weight adjustment weight 30 can be stabilized, the method of holding the weight adjustment weight 30 can be appropriately modified. Furthermore, the engagement hole 53 described above is defined to include both a bottomed structure and a through structure.

[0032] When the plate 50 is sandwiched and fixed between the head body 10 and the sole member 20, the fitting hole 51a is fitted into the positioning projection 20d provided on the sole member 20, and the through hole 52 is aligned with the screw hole 22 (joint point) formed in the sole member 20. In this state, the screw 24 is screwed into the screw hole 22 and the aligned screw hole 23. As a result, the plate 50 is sandwiched and positioned and fixed between the head body 10 and the sole member 20. At this time, weight adjustment weights 30 can be arbitrarily placed in the multiple engagement holes 53 formed in the plate 50 according to the player's preference, making it possible to adjust the center of gravity position and weight (weight balance) of the head body.

[0033] In other words, by providing numerous engagement holes 53 in the plate 50, it becomes possible to make fine adjustments to the number and placement of the weight-adjusting weights 30, thereby enabling a wide range of adjustments to the center of gravity and weight (weight balance) of the head body 10. Furthermore, by sandwiching and fixing the plate 50 that engages with each weight-adjusting weight 30 between the head body 10 and the sole member 20, it becomes possible to stabilize the weight-adjusting weights 30.

[0034] Figure 6 is a schematic diagram showing the clamping state of the plate 50, where (a) is a diagram showing the embodiment described above. Figures 6(b) to (d) show modified examples, where Figure 6(b) shows a configuration in which a thickened portion 50a is formed on the head body side of the plate 50 and a weight adjustment weight is engaged on the head body side; Figure 6(c) shows a configuration in which weight adjustment weights are engaged on both sides of the plate 50; and Figure 6(d) shows a configuration in which an inclination is formed on the fitting surface of the plate 50.

[0035] As shown in Figure 6(a), the weight adjustment weight 30 disposed on the plate 50 comes into contact with the bottom 20c of the recess 20A of the sole member 20 (the cylindrical surface makes surface contact with the bottom 20c), thereby preventing the weight adjustment weight 30 held in the engagement hole 53 from shifting position.

[0036] In this case, the weight adjustment weight may be positioned on the head body 10 side of the plate 50, as shown in Figure 6(b), or on both sides of the plate 50, as shown in Figure 6(c). That is, the protrusions formed on the plate 50 only need to be fitted (including partial fitting) into at least one of the recesses 20A of the sole member 20 and the recesses 11 of the head body 10. Furthermore, at least one of the sole member 20 and the head body 10 does not need to form the aforementioned recesses, but simply needs to be in contact with the plate 50.

[0037] Alternatively, as shown in Figure 6(d), an inclined surface 50b may be formed on the surface (either on both sides) of the plate 50, and recesses 11 and / or 20A for fitting the inclined surface 50b may be formed in the sole member 20 and / or the head body 10.

[0038] The method of holding the weight adjustment weights in Figures 6(b) and 6(c) allows for a higher center of gravity of the head body 10 compared to the configuration in Figure 6(a). By changing the arrangement of the weight adjustment weights at this center of gravity position, the weight balance can be adjusted. According to the method of holding the weight adjustment weight in 6(d), it is possible to change the center of gravity (change the performance) depending on the location.

[0039] Next, we will describe examples of patterns for the placement of the weight-adjusting weights 30 (the position and number of engagement holes in the plate 50). Figure 7 is a diagram illustrating the placement pattern and shows its relationship to the sole member 20.

[0040] As shown in Figure 7(a), when considering the face-backline L1 that passes through the center of the sole member (the center of the head body in the toe-heel direction), it is preferable that the engagement holes of the plate 50 that holds the weight adjustment weight 30 be distributed on the toe side and the heel side with respect to the face-backline L1. This makes it easier to adjust the weight balance in the toe-heel direction.

[0041] Furthermore, as shown in Figure 7(b), when considering the toe-heel line L2 that passes through the center of the sole member (the center of the head body in the face-back direction), it is preferable that the engagement holes of the plate 50 that holds the weight adjustment weight 30 be distributed on the face side and the sole side, with the toe-heel line L2 as the boundary. This makes it easier to adjust the weight balance in the face-back direction.

[0042] In other words, the weight adjustment weights are distributed across four areas: the toe side, the heel side, the face side, and the back side. By placing approximately the same number of weights in each area, it becomes possible to adjust the center of gravity over a wide range, thereby widening the range of weight balance adjustment.

[0043] Figures 8(a) to 8(d) show examples of the arrangement of weight adjustment weights. In these figures, the weight adjustment weights 30 are indicated by black circles, and the engagement holes 53 are indicated by double white circles. Figures 8(a) to 8(d) show examples of arrangement for each club number of a utility club, with Figure 8(a) showing a set of 2-san head, Figure 8(b) a set of 3-san head, Figure 8(c) a set of 4-san head, and Figure 8(d) a set of 5-san head.

[0044] A key feature of this set is that the number of weight-adjusting weights increases as you move to higher club numbers, gradually increasing the head weight. Additionally, the #2 club head has a heel-side center of gravity for easier ball striking, the #3 club head has a central center of gravity, and the #4 and #5 club heads have weight distributed towards the toe and heel to increase the moment of inertia (making the head less prone to wobbling during impact).

[0045] In this way, by adjusting the placement and number of weight-adjusting weights 30 within a single club set, it becomes possible to create a set optimized for each club number.

[0046] Figures 9 to 12 show examples of the arrangement of weight adjustment weights 30 used to adjust the center of gravity and weight balance in a single club head (utility club #3).

[0047] Figure 9 shows an example in which the weight adjustment weights 30 are arranged approximately evenly on the toe side, in the face-back direction. In this embodiment, the center of gravity of the head body is on the toe side, making it possible to make it less likely for the ball to hook.

[0048] Figure 10 shows an example in which the weight adjustment weights 30 are arranged approximately evenly on the heel side in the face-back direction. In this embodiment, the center of gravity of the head body is on the heel side, making it possible to make it less likely for the ball to slice.

[0049] Figure 11 shows an example where the weight adjustment weights 30 are arranged approximately evenly on the face side, in the toe-heel direction. This figure illustrates the situation. In this embodiment, the center of gravity of the head body is on the face side, which makes it possible to improve the distance of the shot.

[0050] Figure 12 shows an example in which the weight adjustment weights 30 are arranged approximately evenly in the toe-heel direction on the back side. In this embodiment, the center of gravity of the head body is on the back side, which makes it possible to stabilize the straightness of the shot.

[0051] In the head structure described above, it is preferable that the sole member 20 is heavier than the weight of the head body 10. For example, by using a material that is relatively heavier (a material with a high specific gravity) compared to the constituent materials of the head body 10 as the sole member 20, it is possible to lower the center of gravity of the head.

[0052] Next, another embodiment of the present invention will be described. In the following embodiments, components similar to those in the embodiments described above are given the same reference numerals, and detailed descriptions are omitted.

[0053] Figure 13 shows a second embodiment illustrating the relationship between multiple weight adjustment weights and a plate, where (a) is an exploded perspective view of the golf club head seen from the sole side, and (b) is an exploded perspective view of the golf club head seen from the crown side.

[0054] In this embodiment, the plate 50 is made flat without providing the engagement holes described above. Numerous female screw holes 20e are formed on the inner surface of the sole member 20, and a male screw-type weight adjustment weight 30A is attached to and detached therefrom. By sandwiching and fixing the plate 50 between the head body 10 and the sole member 20, the axial surface of the weight adjustment weight 30A, which is screwed and fixed into the female screw holes 20e, comes into contact with (engages with) the plate 50, thereby preventing misalignment of the weight adjustment weight 30A and the generation of abnormal noise.

[0055] The position of the female screw hole 20e is not limited, but it can be in the positions illustrated in Figures 7 and 8. This allows for a wide range of adjustments to the center of gravity and weight of the head body 10, and helps to stabilize the weight adjustment weight attached to it. In the above configuration, the plate 50 may be provided with an engagement hole for engaging with the weight adjustment weight 30, similar to that of the first embodiment. Furthermore, the female screw hole 20e and the weight adjustment weight 30A may be press-fitted rather than screw-fitted.

[0056] Figure 14 shows a third embodiment illustrating the relationship between multiple weight adjustment weights and a plate, where (a) is an exploded perspective view of the golf club head seen from the sole side, and (b) is an exploded perspective view of the golf club head seen from the crown side.

[0057] In this embodiment, similar to the second embodiment, the plate 50 is made flat without the engagement holes described above. In this embodiment, a number of female screw holes 20f are formed on the inner surface of the head body 10 (sole portion 14), and a male screw type weight adjustment weight 30A can be attached to and detached therefrom.

[0058] In this configuration, since the weight adjustment is performed on the head body 10 side, it becomes possible to adjust the weight balance at a slightly higher center of gravity position compared to the second embodiment.

[0059] Figure 15 shows a fourth embodiment illustrating the relationship between multiple weight adjustment weights and a plate, where (a) is an exploded perspective view of the golf club head seen from the sole side, and (b) is a golf club head This is an exploded perspective view of the car from the crown side.

[0060] In this embodiment, as in the second and third embodiments, the plate 50 is made flat without the engagement holes described above. Also, in this embodiment, as in the second embodiment, a number of female screw holes 20e are formed on the inner surface of the sole member 20, and as in the third embodiment, a number of female screw holes 20f are formed on the head body 10 (inner surface of the sole portion 14).

[0061] In this configuration, the male screw-type weight adjustment weight 30A can be attached to and detached from at least one side, either the sole member 20 side or the head body 10 side. In other words, the weight balance can be adjusted by adjusting the height of the center of gravity on either side, and the weight can also be adjusted on both sides, thus widening the range of adjustment for the center of gravity and weight.

[0062] Figure 16 shows a fifth embodiment illustrating the relationship between multiple weight adjustment weights and a plate, where (a) is an exploded perspective view of the golf club head seen from the sole side, and (b) is an exploded perspective view of the golf club head seen from the crown side.

[0063] In this embodiment, similar to the first embodiment, an engagement hole (through engagement hole) 53 for the weight adjustment weight 30 is provided on the sole member side of the thickened portion (protrusion 50a) of the plate 50, and similar to the second embodiment, a number of female screw holes 20e for male screw type weight adjustment weights 30A are formed on the inner surface of the sole member 20.

[0064] In this configuration, the position of the male screw-type weight adjustment weight 30A is fixed in advance, and the position and number of weight adjustment weights 30 can be changed as needed, making it possible to fine-tune the center of gravity and weight balance.

[0065] Figure 17 shows a sixth embodiment illustrating the relationship between multiple weight adjustment weights and a plate, where (a) is an exploded perspective view of the golf club head seen from the sole side, and (b) is an exploded perspective view of the golf club head seen from the crown side.

[0066] In this embodiment, similar to the fourth embodiment shown in Figure 15, numerous weight-adjusting weights 30, 30A are arranged on the head body 10 side and the sole member 20 side, with the plate 50 in between. In this case, the plate 50 has engagement holes (through engagement holes) 53 for the weight-adjusting weights 30 on the sole member side of the thickened portion (protrusion 50a), and numerous female screw holes 20f are formed in the head body 10 (inner surface of the sole portion 14) so ​​that the weight-adjusting weights 30A can be screwed in.

[0067] In this configuration, the position of the male screw-type weight adjustment weight 30A is fixed in advance on the head body 10 side, and the position and number of weight adjustment weights 30 can be changed as needed, making it possible to fine-tune the center of gravity and weight.

[0068] Figure 18 shows a seventh embodiment illustrating the relationship between multiple weight-adjusting weights and a plate, where (a) is an exploded perspective view of the golf club head seen from the sole side, (b) is an exploded perspective view of the golf club head seen from the crown side, and (c) is a central cross-sectional view of the golf club head.

[0069] In this embodiment, similar to the sixth embodiment shown in Figure 17, numerous weight-adjusting weights 30, 30A are arranged on the head body 10 side and the sole member 20 side, with the plate 50 in between. In this case, the plate 50 has engagement holes (through engagement holes) 53 for the weight-adjusting weights 30 on the sole member side of the thickened portion (protrusion 50a), and numerous female screw holes 20f are formed on the inner surface of the head body 10 (sole portion 14) so ​​that the weight-adjusting weights 30A can be screwed in. It is configured in such a way. In addition, numerous female screw holes 20e are formed on the inner surface of the sole member 20, and a male screw-type weight adjustment weight 30A can be attached to and detached therefrom.

[0070] Thus, the arrangement of the male screw-type weight adjustment weight 30A and the press-fit type weight adjustment weight 30 can be modified as appropriate.

[0071] Figure 19 shows an eighth embodiment illustrating the relationship between multiple weight-adjusting weights and a plate, where (a) is an exploded perspective view of the golf club head seen from the sole side, (b) is an exploded perspective view of the golf club head seen from the crown side, and (c) is a central cross-sectional view of the golf club head.

[0072] This embodiment is a modification of the third embodiment shown in Figure 14, in which the plate 50 is made flat without providing engagement holes in the plate 50. Numerous female screw holes 20f are formed on the inner surface of the head body 10 (sole portion 14), to which a male screw type weight adjustment weight 30A is attached and detached. In addition, an opening hole 11c is formed on the inner surface (recess 11) of the head body 10 to reduce weight.

[0073] According to this embodiment, compared to the third embodiment, it is possible to adjust the center of gravity and weight while reducing the overall weight of the body.

[0074] Figure 20 shows a ninth embodiment illustrating the relationship between multiple weight-adjusting weights and a plate, where (a) is an exploded perspective view of the golf club head seen from the sole side, (b) is an exploded perspective view of the golf club head seen from the crown side, and (c) is a central cross-sectional view of the golf club head.

[0075] In the embodiments described above, the engagement structure for the plate 50, which engages with the multiple weight-adjusting weights 30, 30A and fixes the placement positions of the multiple weight-adjusting weights, is a closed-bottom hole structure or a through-hole structure. However, as long as it can engage with and fix (hold) the weight-adjusting weights, the engagement structure can be deformed as appropriate.

[0076] In this embodiment, as an engagement structure, numerous cylindrical protrusions 50d are formed on both sides of the plate 50, and numerous recesses (fitting holes) 20h into which the weight adjustment weight 30 is fitted are formed on the inner surface of the head body 10 (sole portion 14) and the inner surface of the sole member 20.

[0077] In this configuration, the weight adjustment weight 30 is fitted into at least one of the head body 10 or the sole member 20, and when the plate 50 is sandwiched between the head body 10 and the sole member 20 in this state, the protrusion 50d presses the weight adjustment weight 30 into the recess 20h, thereby stably fixing the weight adjustment weight 30.

[0078] Although embodiments of the present invention have been described above, the present invention is not limited to the embodiments described above and can be modified in various ways.

[0079] For example, the weight adjustment weight is formed in a cylindrical shape, but its shape is not limited to a rectangular parallelepiped, etc. Also, multiple plates 50 with different weights or different arrangement patterns of engagement holes 53 (parts into which the weight adjustment weight engages) may be prepared and configured to be interchangeable. Furthermore, the shape of the plate 50 can be appropriately deformed as long as it can be sandwiched and fixed between the head body and the sole member. For example, as shown in Figure 6(d), a plate with an inclined fitting surface may be attached to the head body so that an angle is created between the head body and the sole member. With this configuration, the sole tilts and the orientation of the head changes, thus altering the performance. Furthermore, the plate and the weight adjustment weight may be fixed together by screws or a press-fit structure, or the weight adjustment weight may be fixed by engaging (or pressing against) the flat plate.

[0080] Furthermore, the weight adjustment weights mentioned above can be modified, for example, as shown in Figures 21(a) to (c). That is, they can be made into a rectangular parallelepiped weight 30D only (Figure 21(a)), combined with a cylindrical weight adjustment weight 30 (Figure 21(b)), or made into an elliptical cylindrical weight adjustment weight 30E (Figure 21(c)), and their shape, size, combination, and placement can be modified as appropriate. Moreover, the present invention can be applied to iron-type golf clubs in addition to the wood-type clubs described above. [Explanation of Symbols]

[0081] 1 Golf club head 10 Head Body 11 recess 12 Face section 14. Sole 20. Sole component (cover component) 30,30A,30D,30E Weight adjustment weight 50 plates

Claims

1. The head body has a hosel into which the shaft is inserted and a recess formed therein, A cover member fixed to the head body and covering the recess, A positioning structure for positioning the head body and the cover member, A plate is sandwiched and fixed between the head body and the cover member, Multiple weight-adjusting weights are disposed on at least one of the cover member side of the head body and the head body side of the cover member, A golf club that has, The golf club head is characterized in that the plate engages with the plurality of weight-adjusting weights to fix the placement positions of the plurality of weight-adjusting weights.

2. The golf club head according to claim 1, characterized in that the head body is of the wood type and the cover member is a sole member.

3. The golf club head according to claim 1, characterized in that the plate is positioned by fitting into a positioning projection provided on the head body or sole member, and is sandwiched and fixed between the head body and the cover member by screwing a fixing screw into a joint point formed on the sole member.

4. The golf club head according to claim 3, characterized in that the plate has a thickness that allows it to be fitted into a recess in the head body or a recess formed in the sole member.

5. The golf club head according to claim 2, characterized in that the sole member is heavier than the weight of the head body.

6. The golf club head according to claim 1, characterized in that the plate has a plurality of openings formed therein into which the plurality of weight-adjusting weights are fitted.

7. The golf club head according to claim 1, characterized in that at least one of the cover member side of the head body and the head body side of the cover member has fitting holes into which the plurality of weight-adjusting weights are fitted.

8. The golf club head according to claim 7, characterized in that the plurality of weight-adjusting weights are of the male screw type, and the fitting hole is a screw hole into which the screw is screwed.

9. The golf club head according to claim 2, characterized in that the plurality of weight-adjusting weights are distributed on the toe side and heel side with respect to the face backline which is perpendicular to the central part of the head body in the toe-heel direction.

10. The golf club head according to claim 2 or 9, characterized in that the plurality of weight-adjusting weights are distributed on the face side and the back side, with the boundary being a toe-heel line perpendicular to the central part of the head body in the face-back direction.

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