JP2019217161A - Golf club head - Google Patents

Abstract

To provide a golf club head that includes a structure for fitting a novel weight adjustment member.SOLUTION: A golf club head with a hollow head body includes: a first member which is a magnet fixed inside the head body; and a second member detachably attached to an outside of the head body facing the first member while interposing the head body therebetween with the magnetic force of the first member.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a golf club head.

  2. Description of the Related Art Conventionally, there has been known a method of adjusting a weight distribution of a head body by attaching a weight adjusting member to a head body of a golf club head.

  For example, there is a method of adjusting the weight distribution of a golf club head by providing a screw receiving structure inside the head main body and attaching a weight adjusting screw or the like from the outside of the head main body to the screw receiving structure.

  Further, there is a method in which a magnet is fixed to the outside of the head body, and a weight adjusting member is attracted to the magnet by a magnetic force to adjust the weight distribution of the golf club head.

Patent No. 05391693 Patent No. 05286139 Japanese Utility Model Application Laid-Open No. 61-048760 Japanese Utility Model Publication No. 03-041727 U.S. Patent Publication 2017/0361185

  SUMMARY OF THE INVENTION It is an object of the present invention to provide a golf club head having a weight adjusting member mounting structure different from the conventional one.

  The present golf club head is a golf club head having a hollow head body, wherein a first member, which is a magnet, is fixed inside the head body, and faces the first member across the head body. It is required that a second member that is attracted by the magnetic force of the first member can be attached to and detached from the outside of the head body.

  According to the disclosed technology, it is possible to provide a golf club head having a weight adjustment member mounting structure different from the conventional one.

FIG. 1 is a diagram illustrating a golf club head 1 according to a first embodiment. It is a figure which illustrates the mounting structure of the member for weight adjustment which concerns on 1st Embodiment. It is a figure which illustrates the attachment position of the member for weight adjustment which concerns on the modification of 1st Embodiment. It is a figure which illustrates the attachment structure of the member for weight adjustment which concerns on 2nd Embodiment. It is a figure which illustrates the attachment structure of the member for weight adjustment which concerns on 3rd Embodiment. It is a figure which illustrates the attachment structure of the member for weight adjustment which concerns on 4th Embodiment. It is a partial expanded sectional view which illustrates the attachment structure of the member for weight adjustment concerning a 5th embodiment. It is a figure which illustrates the attachment structure of the member for weight adjustment which concerns on 6th Embodiment. It is a figure which illustrates the attachment structure of the member for weight adjustment which concerns on the modification of 6th Embodiment.

  Hereinafter, embodiments will be described with reference to the drawings. In each of the drawings, the same components are denoted by the same reference numerals, and redundant description may be omitted.

<First Embodiment>
FIG. 1 is a view illustrating a golf club head 1 according to a first embodiment, wherein FIG. 1A is a front view, FIG. 1B is a bottom view, and FIG. 1C is a left side view. 1 (d) is a right side view.

In FIG. 1, the front view is a view from the face surface 11f side, and the golf club head 1 is grounded on a horizontal plane H (corresponding to the ground) according to a reference lie angle θ and a reference loft angle (not shown). The case is illustrated. In addition, J has shown the center axis of the hole of the hosel part 20. The arrow d ₁ toe - heel direction (lateral direction), arrow d ₂ top - a sole direction (vertical direction), arrow d ₃ is the face - shows a back direction (longitudinal direction).

  The golf club head 1 shown in FIG. 1 is a wood type golf club head, for example, a driver, but may be a utility or fairway wood. The golf club head 1 can be formed using, for example, titanium, a titanium alloy, stainless steel, aluminum, an aluminum alloy, an iron-based metal, magnesium, a magnesium alloy, a fiber-reinforced resin, or the like. The golf club head 1 may be assembled by joining a plurality of parts. Hereinafter, the golf club head 1 will be described in detail.

  The golf club head 1 is a hollow structure having a hollow head main body 10 and a hosel portion 20 connected to the head main body 10.

  The head body 10 has a face portion 11, a crown portion 12, a sole portion 13, and a side portion 14. The face portion 11 is a portion having a face surface 11f serving as a hitting surface. Note that the face portion 11 has a predetermined thickness, and the face surface 11f forms an outer surface of the face portion 11. The crown part 12 is a part that forms the upper part of the golf club head 1. The sole portion 13 is a portion that forms the bottom of the golf club head 1. The side part 14 is a part that connects the crown part 12 and the sole part 13. The hosel part 20 is a part connected to the shaft.

  The golf club head 1 is provided with a weight adjusting member mounting structure described below in any part other than the face part 11.

  2A and 2B are diagrams illustrating a mounting structure of the weight adjusting member according to the first embodiment. FIG. 2A is a bottom view, and FIG. It is a partial expanded sectional view which follows a line.

  Referring to FIG. 2, in the first embodiment, a first member 30 and a second member 40 are provided on the back side of the sole portion 13 of the head main body 10.

  The first member 30 is a magnet, and is fixed in a concave portion 10c formed on the inner surface 10a side of the head main body 10, as shown in FIG. The first member 30 may be fixed to the head main body 10 by a method such as an adhesive, press fitting, caulking, welding, or the like, or may be fixed to the head main body 10 by another method. The planar shape of the first member 30 is, for example, a rectangle, but may be an appropriate shape such as a circle or an ellipse.

  The second member 40 is detachably attached to the outer surface 10 b of the head main body 10 facing the first member 30 with the head main body 10 interposed therebetween by the magnetic force of the first member 30. The planar shape of the second member 40 is, for example, a rectangle, but may be an appropriate shape such as a circle or an ellipse.

  The second member 40 is a member for adjusting the weight of the golf club head 1. The weight of the second member 40 is, for example, 2 g or more and 20 g or less. The second member 40 can prepare a plurality of types of weights. Note that the second member 40 may also be used as a nameplate for improving the decorativeness of the head.

  The size of the outer surface 10b of the head body 10 when viewed from the normal direction may be larger or smaller for the second member 40 than for the first member 30, but larger for the second member 40. By doing so, the adjustment range of the weight distribution can be easily increased.

  Since the head main body 10 is interposed between the first member 30 and the second member 40, the second member 40 does not come into contact with the first member 30.

  As the first member 30, for example, a samarium cobalt magnet, a neodymium magnet, or the like can be used. As the second member 40, a magnet or a magnetic body can be used. When the second member 40 is a magnet, for example, a samarium cobalt magnet, a neodymium magnet, or the like can be used. When the second member 40 is a magnetic material, for example, iron, nickel, cobalt, or the like can be used.

  Although the material of the golf club head 1 has been exemplified above, at least a region of the head body 10 sandwiched between the first member 30 and the second member 40 is formed of a non-magnetic substance. The entire head body 10 may be formed of a non-magnetic substance. Examples of the nonmagnetic substance include aluminum, titanium, fiber reinforced resin (for example, carbon fiber reinforced plastic (CFRP), glass fiber reinforced plastic (GFRP), etc.), polycarbonate, and the like.

  In the example of FIG. 2, the first member 30 and the second member 40 are arranged on the back side of the sole portion 13 of the head body 10, but the first member 30 and the second member 40 It can be placed at any position that does not touch. However, in the example of FIG. 2B, the second member 40 protrudes outward from the outer surface 10b of the head main body 10, and the sole member 13 comes into contact with the ground at the time of a golf swing, so that the second member 40 is in contact with the head main body 10. It is preferable that the first member 30 and the second member 40 are not disposed on the sole portion 13 because the first member 30 and the second member 40 are likely to come off.

  By the way, in a conventional golf club head, for example, a screw receiving structure is provided inside the head main body, and a weight adjusting screw or the like replaceable from the outside of the head main body is attached to the screw receiving structure to distribute the weight of the golf club head. Had been adjusted. However, in the conventional golf club head, the weight is concentrated on the portion of the screw receiving structure, and the width of the head weight adjustment is not sufficient.

  On the other hand, in the golf club head 1, the first member 30, which is a magnet, is fixed inside the head body 10, and the first member 30 is provided outside the head body 10 opposed to the first member 30 with the head body 10 interposed therebetween. The second member 40 that is attracted by the magnetic force of 30 can be removably disposed.

  Therefore, in the golf club head 1, it is not necessary to provide a structure in which the weight is concentrated, such as the screw receiving structure in the conventional golf club head, inside the head body 10. Further, the first member 30 can be made lighter than the screw receiving structure. As a result, the weight corresponding to the weight of the screw receiving structure can be freely distributed to other places, and the weight distribution of the golf club head can be easily adjusted.

  In the golf club head 1, a magnet is fixed inside the head body 10. Thereby, compared with the structure in which the magnet is fixed to the outside of the head main body, the impact when the first member 30 comes into direct contact with the ground when the duff occurs during the golf swing, and via the second member 40 This has an effect of preventing the first member 30 from coming off the head main body due to an impact at the time of contact with the ground. That is, in the golf club head 1, the first member 30 and the second member 40 are not in contact with each other, and the first member 30 is not exposed to the outside of the head body 10, so that such an effect is obtained.

  In the structure in which the magnet is fixed to the outside of the head main body, it is necessary to provide a recess having a size that allows both the first member 30 and the second member 40 outside the head main body. Therefore, it is necessary to make the recess larger. For this reason, there is a concern that stress when a golf ball is impacted by the golf club head is concentrated on the concave portion. When a magnet is provided inside the head body, the dent can be made smaller with respect to the size of the weight adjustment member outside the head body as compared with the conventional technology, preventing stress concentration on the head body and preventing strength reduction. it can.

  Also, as compared with a structure in which the head main body itself is made of a magnetic material, it is possible to mount members even if the head main body is not made of a magnetic material.

  In the example of FIG. 2, since the second member 40, which is a weight adjusting member, is disposed on the back side of the sole portion 13 of the head main body 10, the loft angle at the time of impact is increased by increasing the center of gravity of the head. And the launch angle of the hit ball increases.

<Modification of First Embodiment>
In the modified example of the first embodiment, an example in which the second member 40 as a weight adjusting member is arranged at a position different from that of the first embodiment will be described. In addition, in the modified example of the first embodiment, the description of the same components as those of the embodiment described above may be omitted.

  3A and 3B are diagrams illustrating a mounting position of a weight adjusting member according to a modified example of the first embodiment. FIG. 3A is a bottom view, and FIGS. 3B and 3C are diagrams. It is a left side view.

  As shown in FIG. 3A, the second member 40 may be disposed at two positions on the back side of the sole portion 13 of the head main body 10. In this case, since the moment of inertia is improved by loading the head body 10 in the left-right direction (toe-heel direction), it is difficult for the hit ball to be bent. The second member 40 may be provided at three or more locations on the head main body 10.

  As shown in FIG. 3B, the second member 40 may be arranged from the back side of the sole portion 13 of the head main body 10 to the vicinity of the sole portion 13 excluding a region where the head main body 10 is grounded. In this case, since the second member 40 does not exist in the area of the head body 10 where the head is grounded, the influence of duffling can be reduced.

  As shown in FIG. 3C, the second member 40 may be arranged from the back side of the sole portion 13 of the head body 10 to the back side of the crown portion 12. In this case, the depth of the center of gravity can be changed without largely changing the height of the center of gravity.

<Second embodiment>
In the second embodiment, an example is shown in which the second member does not protrude from the outer surface of the head main body to the outside. Note that in the second embodiment, the description of the same components as those in the above-described embodiment may be omitted.

  4A and 4B are diagrams illustrating a mounting structure of a weight adjusting member according to a second embodiment, in which FIG. 4A is a bottom view, and FIG. 4B is BB in FIG. 4A. It is a partial expanded sectional view which follows a line.

  Referring to FIG. 4, in the second embodiment, a first member 30 and a second member 45 are provided on the sole portion 13 of the head main body 10.

  The first member 30 is fixed in a recess 10 d formed on the inner surface 10 a side of the head main body 10. The first member 30 may be fixed to the head main body 10 by a method such as an adhesive, press fitting, caulking, welding, or the like, or may be fixed to the head main body 10 by another method. The planar shape of the first member 30 is, for example, an ellipse, but may be an appropriate shape such as a circle or a rectangle.

  The second member 45 is detachably adsorbed by a magnetic force of the first member 30 into a concave portion 10e formed on the outer surface 10b side of the head body 10 facing the first member 30 with the head body 10 interposed therebetween. I have. The planar shape of the second member 45 is, for example, an ellipse, but may be an appropriate shape such as a circle or a rectangle.

  The second member 45 is a member for adjusting the weight of the golf club head 1. The weight of the second member 45 is, for example, 2 g or more and 20 g or less. The second member 45 can prepare a plurality of types of weights. The second member 45 may be used also as a nameplate for improving the decorativeness of the head.

  The size of the outer surface 10b of the head body 10 when viewed from the normal direction may be larger or smaller for the second member 45 than for the first member 30, but larger for the second member 45. By doing so, the adjustment range of the weight distribution can be easily increased.

  Since the head main body 10 is interposed between the first member 30 and the second member 45, the second member 45 does not come into contact with the first member 30.

  As the second member 45, a magnet or a magnetic body can be used. When the second member 45 is a magnet, for example, a samarium cobalt magnet, a neodymium magnet, or the like can be used. When the second member 45 is a magnetic material, for example, iron, nickel, cobalt, or the like can be used.

  In the example of FIG. 4, the second member 45 is placed in the first position such that the outer surface of the second member 45 is flush with the outer surface 10 b of the head main body 10 or at a position recessed from the outer surface 10 b of the head main body 10. It is adsorbed on the member 30. Therefore, the first member 30 and the second member 45 can be arranged on the sole portion 13.

  In addition, in order to facilitate attachment and detachment of the second member 45 into the concave portion 10e, it is preferable to provide an appropriate gap between the outer wall surface of the second member 45 and the inner wall surface of the concave portion 10e. In addition, in order to facilitate attachment and detachment of the second member 45 into the recess 10e, an annular cutout 45x may be provided on the side of the recess 10e of the second member 45.

  As described above, in the second embodiment, when the second member 45 is attracted to the first member 30, the outer surface of the second member 45 is flush with the outer surface 10b of the head main body 10, or The position is recessed from the outer surface 10b of the head body 10.

  As a result, even if the first member 30 and the second member 45 are disposed in the sole portion 13, the first member 30 and the second member 45 include the sole portion 13 as long as they are not in contact with the face portion 11 in the head body 10. It can be arranged at any position.

  Further, the center of gravity of the head main body 10 is reduced by disposing the second member 45 on the sole portion 13. As a result, the launch angle of the hit ball increases, and the backspin amount can be reduced.

  The mounting structure of the weight adjusting member according to the second embodiment can be applied to the positions shown in the first embodiment and the modifications.

<Third embodiment>
In the third embodiment, an example will be described in which the second member is disposed on a resin portion provided partially on the head main body. In the third embodiment, the description of the same components as those in the above-described embodiment may be omitted.

  5A and 5B are diagrams illustrating a mounting structure of a weight adjusting member according to a third embodiment, in which FIG. 5A is a bottom view, and FIG. It is a partial expanded sectional view which follows a line.

  Referring to FIG. 5, in the third embodiment, a first member 30 and a second member 40 are provided on a resin portion 10r partially provided on the back side of a sole portion 13 of a head main body 10. . The resin portion 10r is, for example, carbon fiber reinforced plastic (CFRP), glass fiber reinforced plastic (GFRP), polycarbonate, or the like.

  If a member is to be mounted in a plate-shaped resin portion by screwing as in the related art, there are problems such as damage to the reinforcing fibers, cracking, and reduced strength due to perforation in the resin portion. In the present embodiment, since the first member 30 as a magnet is fixed to the resin portion 10r by the adhesive 50, the resin portion 10r is not damaged by perforation or the like, and the strength of the resin portion 10r is prevented from being reduced. You can adjust the weight.

  The mounting structure of the weight adjusting member according to the third embodiment can be applied to the positions shown in the first embodiment and the modifications.

<Fourth embodiment>
In the fourth embodiment, an example is shown in which the first member is larger than the second member. In the fourth embodiment, the description of the same components as those of the above-described embodiment may be omitted.

  6A and 6B are diagrams illustrating a mounting structure of a weight adjusting member according to a fourth embodiment, wherein FIG. 6A is a bottom view, and FIG. 6B is a line DD of FIG. 6A. It is a partial expanded sectional view which follows a line. FIGS. 6C and 6D are modifications of the attachment position of the weight adjusting member.

  Referring to FIG. 6, in the fourth embodiment, a first member 30 and a second member 40 are provided on the back side of the sole portion 13 of the head main body 10. However, the size of the first member 30 in the toe-heel direction is larger than the size of the second member 40 in the toe-heel direction when viewed from the normal direction of the outer surface 10 b of the head body 10.

  Thereby, the second member 40 can be attached to and detached from a plurality of positions as shown in FIGS. 6B to 6D. That is, as shown in FIG. 6B, the heel side of the region where the first member 30 is arranged, the central side of the region where the first member 30 is arranged as shown in FIG. 2), the second member 40 can be attached to and detached from the toe side of the region where the first member 30 is arranged. As a result, it is easy to adjust the weight distribution in the toe-heel direction.

  When viewed from the normal direction of the outer surface 10b of the head body 10, the size of the first member 30 in the toe-heel direction is larger than the size of the second member 40 in the toe-heel direction. Is an example. For example, when viewed from the normal direction of the outer surface 10b of the head body 10, the size of the first member 30 in the face-back direction may be larger than the size of the second member 40 in the face-back direction. Further, the first member 30 may be larger than the second member 40 in both the toe-heel direction and the face-back direction.

  The mounting structure of the weight adjusting member according to the fourth embodiment can be applied to the positions shown in the first embodiment and the modifications.

  Also, in the case of the mounting structure of the weight adjusting member shown in FIGS. 4 and 5, similarly to the case of FIG. 6, the size of the first member 30 in the toe-heel direction and the face-back direction is set to the second size. The size of the member 40 or the second member 45 in the toe-heel direction or the face-back direction may be larger.

<Fifth Embodiment>
In the fifth embodiment, an example is shown in which the second member is larger than the first member and the second member has a plurality of thicknesses. Note that, in the fifth embodiment, the description of the same components as those of the already described embodiment may be omitted.

  FIG. 7 is a partially enlarged cross-sectional view illustrating a mounting structure of a weight adjusting member according to a fifth embodiment. The mounting structure of the weight adjusting member according to the fifth embodiment can be provided on the sole portion 13 as in FIG. 4, for example, but may be provided at the position shown in FIG. 2 or FIG.

  In the structure of FIG. 7, by reducing the weight of the first member 30, the weight of the second members 45, 46, and 47 can be correspondingly increased. That is, since the weight of the entire head body 10 is constant in design, if the weight occupied by the first member 30 is reduced, the weights of 45, 46, and 47 can be increased instead.

  Thus, the weight adjustment width of the second member is large, and the degree of freedom in design can be increased. For example, like the second member 46 shown in FIG. 7B, the size can be increased with the same thickness as the second member 45 shown in FIG. 7A. Also, like the second member 47 shown in FIG. 7C, the thickness can be reduced to the same size as the second member 47 shown in FIG. 7B.

  The second member 40 having a different size and a different thickness can be used also in the case of the mounting structure of the weight adjusting member shown in FIG.

<Sixth Embodiment>
In the sixth embodiment, an example in which a rotation preventing structure is provided on a circular second member will be described. Note that in the sixth embodiment, description of the same components as those in the above-described embodiments may be omitted.

  8A and 8B are diagrams illustrating a mounting structure of a weight adjusting member according to a sixth embodiment, wherein FIG. 8A is a bottom view, and FIG. 8B is EE in FIG. 8A. It is a partial expanded sectional view which follows a line.

  Referring to FIG. 8, in the sixth embodiment, a first member 30 and a second member 45 are provided on a sole portion 13 of a head body 10. When viewed from the normal direction of the outer surface 10b of the head body 10, the shape of the second member 45 is circular. On the surface of the second member 45 facing the concave portion 10e, a conical convex portion 45t is provided at a position offset from the center. The convex portion 45t is fitted with a concave portion 10f, which is a conical bottomed hole provided on the bottom surface of the concave portion 10e, to realize a rotation preventing structure.

  In this manner, the protrusion 45t is fitted to the recess 10f to prevent the rotation of the second member 45, thereby preventing the second member 45 from falling off due to the force in the rotation direction during use of the golf club head 1. it can.

  The structure for preventing the rotation of the second member is not limited to the embodiment shown in FIG. 8, but may be, for example, the embodiment shown in FIG.

  9A and 9B are diagrams illustrating a mounting structure of a weight adjusting member according to a modification of the sixth embodiment. FIG. 9A is a bottom view, and FIG. 9B is a diagram of FIG. It is a partial expanded sectional view which follows an FF line.

  Referring to FIG. 9, on the surface of the second member 45 facing the concave portion 10e, a linear convex portion 45w is provided, for example, so as to pass through the center. The convex portion 45w is fitted with the concave portion 10g, which is a linear groove provided on the bottom surface of the concave portion 10e, to realize a rotation preventing structure.

  As described above, a linear convex portion 45w and a concave portion 10g may be provided as a rotation preventing structure. Also in this case, the protrusion 45w is fitted to the recess 10g to prevent the rotation of the second member 45, thereby preventing the second member 45 from falling off due to the force in the rotation direction during use of the golf club head 1. it can.

  Instead of the linear convex portion 45w and the concave portion 10g, a cross-shaped convex portion and a concave portion fitted to each other, or a convex portion and a concave portion of another shape fitted to each other may be provided.

  As described above, the preferred embodiments have been described in detail. However, the present invention is not limited to the above-described embodiments, and various modifications and substitutions may be made to the above-described embodiments without departing from the scope described in claims. Can be added.

Reference Signs List 1 golf club head 10 head main body 10a inner surface 10b outer surface 10c, 10d, 10e, 10f, 10g concave portion 10r resin portion 11 face portion 11f face surface 12 crown portion 13 sole portion 14 side portion 20 hosel portion 30 first member 40, 45, 46, 47 Second member 45t, 45w Convex part 45x Notch part 50 Adhesive

Claims (7)

A golf club head having a hollow head body,
A first member, which is a magnet, is fixed inside the head body,
A golf club head in which a second member that is attracted by a magnetic force of the first member can be attached to and detached from the outside of the head body opposed to the first member with the head body interposed therebetween.   The golf club head according to claim 1, wherein a region of the head body sandwiched between the first member and the second member is formed of a non-magnetic substance.   3. The golf club head according to claim 1, wherein the second member does not contact the first member. 4. The head body includes a face portion,
The golf club head according to any one of claims 1 to 3, wherein the first member and the second member do not contact the face portion.   The second member is attracted to the first member such that an outer surface of the second member is flush with an outer surface of the head body or a position recessed from an outer surface of the head body. The golf club head according to any one of claims 1 to 4.   The golf club head according to any one of claims 1 to 5, wherein the golf club head is a wood type.   The golf club head according to any one of claims 1 to 6, wherein the size of the second member is larger than that of the first member when viewed from a normal direction of an outer surface of the head body.

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