JP5262140B2 - Golf club head, golf club, and shaft exchange method - Google Patents

Description

  The present invention relates to a golf club head, and more particularly to a golf club head in which a separate hosel is attached to a head body. The present invention also relates to a golf club having the golf club head and a method for replacing the shaft of the golf club.

  A golf club has a head attached to the distal end portion of a shaft and a grip attached to the proximal end side of the shaft.

  In a conventional general golf club head, a hosel hole is provided directly in the head, and a shaft is inserted into the hosel hole and fixed by an adhesive. In general, an epoxy-based adhesive is used as the adhesive, and the shaft can be pulled out by heating the hosel part and breaking the structure made of the cured epoxy resin when the shaft is replaced.

Japanese Patent Application Laid-Open No. 11-178554 describes a golf club head in which a head body and a hosel are separately provided and the hosel is fixed to the head body with screws. In JP-A-11-178554, a plate-like neck portion is provided on the lower end side of the hosel, and this neck portion is inserted into an insertion portion of the head body and fixed with screws. By fixing the plate-like neck portion to the head main body in this way, the neck portion is bent at the time of impact when the ball is hit, and the stress concentration generated at the joint portion between the shaft and the hosel is alleviated.
Japanese Patent Application Laid-Open No. 11-178554

  In the golf club head disclosed in Japanese Patent Laid-Open No. 11-178554, the strength and rigidity of the head body and the hosel are insufficient, and a strong impact feeling cannot be obtained. Also, the hosel position becomes excessively high.

  In addition, since the golf club head disclosed in JP-A-11-178654 has a plate-like neck portion, the shaft can be attached to the golf club head even if the shaft is rotated 180 ° around the axis. Therefore, the phase in the circumferential direction of the shaft is not uniquely determined.

  The present invention solves the above-mentioned conventional problems, and can firmly fix a hosel separate from the head body, the phase in the circumferential direction of the shaft is uniquely determined, and the hosel height is increased. An object of the present invention is to provide a golf club head that is appropriate and in which a hosel can be easily attached to and detached from a head body, a golf club using the golf club head, and a method of replacing the shaft of the golf club.

A golf club head according to the present invention includes a head body having a face surface, and a hosel separate from the head body, and the hosel is detachably attached to the head body. The hosel includes a cylindrical body having a hosel hole into which a shaft is inserted , and a mounting piece that protrudes from the side surface of the cylindrical body toward the rear side of the head and extends in a direction parallel to the cylindrical axis of the cylindrical body. The head main body is provided with a hosel insertion hole into which the hosel is inserted. The hosel insertion hole is inserted with a cylindrical body insertion portion into which the cylindrical body is inserted and the mounting piece. and includes a mounting piece insertion portion, the mounting piece is provided with a plurality of female screw holes spaced apart vertically, the heel portion of the head body, and each of the female screw hole coaxial with A plurality of small holes are provided so as to pass through the small holes. The by screw is screwed into each female screw hole Te hosel is characterized in that it is fixed to the head body.

The golf club of the present invention includes the golf club head of the present invention, a shaft having a tip end inserted into the hosel hole and fixed to the hosel with an adhesive, and a grip attached to the shaft.

The golf club shaft replacement method of the present invention is a method for replacing the shaft of the golf club of the present invention with a new shaft, which is fixed in advance to a hosel of the same type as the hosel of the head body. A hosel / shaft connected body is prepared, the hosel attached to the golf club is removed from the head body, and a new hosel / shaft connected body is attached to the head body.

The golf club head of the present invention has a hosel inserted into a hosel insertion hole provided in the head body and fixed. Since the hosel insertion hole includes the cylindrical body insertion portion and the attachment piece insertion portion, and the cylindrical body and the attachment piece of the hosel are inserted into the insertion portions, the attachment strength and rigidity of the hosel are high.

By disposing this attachment piece insertion portion on the rear side of the head of the cylindrical body insertion portion and providing a small hole for screw insertion in the heel portion of the head main body, the screw becomes inconspicuous. Further, by inserting the attachment pieces of the hosel to the mounting piece insertion portion, and that engagement between the hosel and the shaft and the head body are uniquely determined. Therefore, when the protruding line part is provided in a part of the shaft, the protruding line part is always in a specific direction.

  By providing an elastic material at least at a part between the inner surface of the hosel insertion hole and the outer surface of the hosel, it is possible to prevent the hosel from rattling. It can also absorb shock and vibration during impact.

  The golf club of the present invention is obtained by attaching a shaft to this golf club head. Since the hosel of this golf club head is detachable from the head body, the shaft can be easily exchanged. Even if the shaft is replaced, the protruding portion of the shaft is always in a specific direction.

  In order to replace the shaft, a hosel of the same type as that of the golf club head is attached in advance to the new shaft to be replaced. Remove the hosel together with the shaft from the existing golf club, and install a hosel with a new shaft with a hosel (hosel-shaft assembly) instead. If it does in this way, the trouble of trouble and time which destroys the organization of an adhesive agent by heating like the past, removes a shaft, and attaches a new shaft with an adhesive agent again can be saved. For this reason, it is possible to remove the shaft from the head of the golf club that has just been hit and attach another shaft with different characteristics to the head and immediately make a test hit. Therefore, it is extremely difficult for a golfer to find an appropriate golf club at a golf shop or the like. It becomes easy.

  Hereinafter, embodiments will be described with reference to the drawings. FIG. 1 is a front view of a golf club head according to an embodiment, and FIG. 2 is a side view of the heel side of the golf club head. 3 (a) is a side view of the hosel, FIG. 3 (b) is a sectional view taken along the line BB of FIG. 4 (a), FIG. 4 is a sectional view taken along the line IV-IV of FIG. FIG. 6 is a cross-sectional view taken along line VV in FIG. 2, FIG. 6 is a plan view of a hosel with an elastic material attached, and FIG. 7 is a perspective view showing a method for attaching and replacing a shaft. In the following description, the rear means the direction opposite to the flying ball direction.

  The golf club head 1 has a head body 2 and a hosel 3 attached to the head body 2. The golf club head 1 is of a hollow wood type and includes a face portion 2a, a crown portion 2b, a sole portion 2c, a toe portion 2d, a heel portion 2e, and a back portion 2f.

Hosel 3, a cylindrical body 3b having a hosel bore 3a of the shaft 4 is inserted, and the side intake with pieces projecting from 3c of the cylindrical body 3b, a female screw hole 3d provided in the mounting piece 3c And have. The attachment piece 3c has a rectangular parallelepiped shape, and extends in a direction parallel to the cylinder axis of the cylinder 3b. The female screw hole 3d passes through the attachment piece 3c from the heel side to the toe side. A female screw is engraved on the inner peripheral surface of the female screw hole 3d.

The head main body 2 is provided with a hosel insertion hole 5 into which the hosel 3 is inserted so as to be recessed from the heel side and the face side of the upper surface thereof. The hosel insertion hole 5, is cylindrical body 3b is inserted, and the cylindrical body insertion portion 5b of the cylindrical body 3b the same shape, mounting piece 3c is inserted, the mounting piece 3c having the same shape attachment piece insertion portion 5 c And have. The attachment piece insertion portion 5c protrudes rearward from the cylindrical body insertion portion 5b.

  The heel portion 2e of the head main body 2 is provided with a small hole 6 that reaches the attachment piece insertion portion 5c.

  When assembling the golf club, the tip of the shaft 4 is inserted into the shaft insertion hole 3a of the hosel 3 in advance and fixed with an adhesive. For example, an epoxy adhesive is used as the adhesive.

  As shown in FIG. 7, the hosel 3 of the connecting body of the hosel 3 and the shaft 4 is inserted into the hosel insertion hole 5. After the hosel 3 is inserted into the hosel insertion hole 5 and the female screw hole 3d and the small hole 6 are coaxial, the screw 7 is screwed into the female screw hole 3d through the small hole 6, and the hosel 3 is attached to the head body 2. Fix it. Thereby, a golf club in which the shaft 4 and the golf club head 1 are integrated is completed. In this golf club, since the hosel 3 is inserted into the hosel insertion hole 5 and fixed with the screw 7, the mounting strength and rigidity of the hosel 3 are high.

  In addition, as shown in FIG. 6, if the flaky elastic material 8 made of rubber, elastomer, synthetic resin or the like is attached to the outer peripheral surface of the cylindrical body 3b of the hosel 3 in advance, Can absorb shock and vibration at the time.

  In order to replace the golf club shaft, a hosel of the same type as the hosel 3 is fixed to the new shaft to be replaced in advance by an adhesive.

  The screw 7 of the existing golf club is removed, and the old shaft 4 is removed from the head body 2 together with the old hosel 3. Next, a new shaft with a hosel (hosel-shaft coupled body) is inserted into the head body 2 and fixed with screws 7.

  In this way, the shaft can be attached and replaced very easily and quickly. In the past, when the shaft was replaced, the hosel part of the existing golf club was heated to break the structure of the cured adhesive, and after the shaft was pulled out, the new shaft was fixed with an adhesive. Although it took about 1 day, in the above embodiment, the shaft can be replaced in several minutes by attaching the hosel 3 to the new shaft in advance with an adhesive. Therefore, it is possible to realize a utilization method in which shafts of various specifications with hosel are prepared, and different shafts are sequentially attached to the same head main body and tried.

  In the above embodiment, the mounting piece 3c protrudes rearward from the cylindrical body 3b, and the screw 7 is screwed from the heel portion 2e. Therefore, when the golf club head is viewed from the face side, the mounting piece 3c and the screw 7 are not conspicuous and look good. In addition, since a plurality of screws 7 are used apart from each other in the vertical direction, the mounting strength of the hosel 3 is extremely high.

  In addition, a grip attached to the shaft 4 may have a non-circular cross section. For example, the bottom surface of the grip outer peripheral surface that faces the ground in the address state may have a shape that bulges more than other surfaces. In such a case, when the hosel 3 is attached to the shaft 4, the attachment piece 3 c is positioned approximately 90 ° counterclockwise around the shaft axis from the grip bulge portion, so that the grip bulge portion is reliably secured. The shaft can be attached to the head body so as to be on the ground side.

  An example of such a non-circular cross-sectional grip is shown in FIGS. 11 to 15, and a golf club with the grip mounted on the golf club head 1 is shown in FIG.

  11 is a side view of the grip 9, FIG. 12 is a longitudinal sectional view in the longitudinal direction of the grip 9, FIG. 13 is a sectional view taken along line XIII-XIII in FIG. 12, and FIG. 14 is FIG. FIG. 15 is an enlarged sectional view taken along line XV-XV in FIG.

  As shown in FIG. 10, the tip of the shaft 4 is inserted into the hosel 3 and fixed with an adhesive. A ferrule 4 a is attached to the tip end side of the shaft 4 so as to be in contact with the hosel 3.

  The grip 9 has a substantially cylindrical shape having an insertion hole 9b of the shaft 4, and is made of rubber or the like. The grip 9 has a thick portion 9a at a part in the circumferential direction (the lower side in the figure). The thick part 9 a extends over the longitudinal direction of the grip 9. The thick portion 9a is provided such that the cross-sectional shape of the inner peripheral surface of the grip 9 (cross-sectional shape in the direction perpendicular to the longitudinal direction of the grip 9) is a chordal shape. When the shaft 4 is inserted into the grip 9, as shown in FIG. 15, the thick portion 9a is pushed outward from the inside, and the outer periphery bulges to form a protruding portion 9c. The ridge 9c extends in the longitudinal direction of the grip 9 (longitudinal direction of the shaft 4). In a normal case, the ridge portion 9c is located on the lower side, that is, the side facing the ground when the golf club is in an address state.

  Therefore, in this embodiment, when the shaft center of the shaft 4 is viewed from the grip 9 toward the hosel 3, in the address state, the protruding portion 9c is positioned substantially vertically below the shaft shaft center, and the mounting piece 3c. Is then located approximately 90 ° counterclockwise.

  The shaft 4 is attached to the hosel 3 so that the positional relationship between the mounting piece 3c and the protruding portion 9c is shifted by approximately 90 ° around the shaft axis in this way to constitute a hosel-shaft coupling body. Then, no matter which hosel-shaft assembly is attached to the golf club head 1, the protruding portion 9 c is always correctly arranged on the ground side in the address state.

  FIGS. 8 and 9 show different configurations of the hosel. FIG. 8A is a side view of the hosel, and FIG. 9B is a longitudinal sectional view of the hosel.

  The hosel 10 in FIG. 8 and the hosel 20 in FIG. 9 are provided with cylinders 12 and 22 having shaft insertion holes 11 and 21, respectively, attachment pieces 13 and 23 protruding from the cylinders 12 and 22, It has female screw holes 14 and 24 provided in the pieces 13 and 23.

  In the hosel 10, the leaf spring 15 protrudes from the side peripheral surface on the distal end side (lower end side) in the insertion direction. In FIG. 9, instead of a leaf spring, a protrusion 25 urged in a protruding direction by a spring 26 protrudes.

  A recess for engaging the leaf spring 15 or the protrusion 25 is provided on the inner peripheral surface of the hosel insertion hole of the head body to which the hosel 10 or 20 is attached, so that the female body when the hosel 10 or 20 is inserted into the head body is provided. The screw holes 14, 24 and the small holes of the head main body can be aligned. A fine hole is provided through the outer surface of the head body so as to reach the recess. When removing the hosel 10, 20 from the hosel insertion hole, after removing the screw 7, the pin-like body is inserted into the fine hole, and the leaf spring 15 or the protrusion 25 is retracted, whereby the hosel 10, 20 is extracted. it can.

  In the above embodiment, the golf club head is a wood type, but the present invention can be applied to any type of golf club head such as a utility type, an iron type, or a putter.

  In the case of the illustrated hollow golf club head, the weight on the heel side is larger than that of a general golf club head by providing the hosel and the hosel insertion hole. Therefore, it is preferable to balance the golf club head by increasing the thickness on the toe side or providing a weight on the toe side.

  FIGS. 16 and 17 show an example of such a golf club head. FIG. 16 is a front view of a golf club head 1A in which a thick portion 2t is provided on the toe portion 2d side of the head body 2. FIG. FIG. 17 is a side view of a golf club head 1B in which a weight screw 2w is attached to the back portion 2f of the head body 2. By providing female screw holes for weight adjustment in the sole part, toe side part, back part, etc. of the golf club head, by preparing a plurality of screws with different weights and replacing them with screws with different weights The swing balance of the golf club can be adjusted, and the position of the center of gravity of the golf club head can be adjusted.

  Other configurations in FIGS. 16 and 17 are the same as those in FIGS. 1 and 2, and the same reference numerals denote the same parts.

  In the present invention, one or a plurality of protrusions may be provided on the hosel other than the attachment piece 3c. It is preferable that the protruding portion protrudes in a direction different from the mounting piece 3c around the shaft axis of the hosel. This protrusion may not have a screw hole. By providing a projecting portion other than the mounting piece, it is possible to disperse the impact at the time of impact.

FIG. 18 is an exploded perspective view of a golf club head 1C according to one example, and shows the same parts as FIG. The hosel 3 C is provided projecting portion 3f, the hosel insertion hole 5 of the head main body 2, the concave portion 5f is provided the protruding portion 3f is fitted. Protrusion 3f is provided in the toe portion 2d side when viewed from the axis of the hosel 3 C. Other configurations are the same as those in FIG. 7, and the same reference numerals denote the same parts. Note that FIG. 18 is an example, and the shapes, positions, and numbers of the protruding portions and the recessed portions may be other than illustrated.

  The material of the head main body and hosel is not particularly limited, but in the case of a wood type golf club head, for example, a titanium alloy, an aluminum alloy, stainless steel, or the like can be used. For the hosel, a material having a specific gravity equal to or lower than that of the head main body is preferable. For example, aluminum, aluminum alloy, magnesium alloy, FRP, synthetic resin, or the like may be used.

1 is a front view of a golf club head according to an embodiment. It is a side view of the heel side of a golf club head. 3 (a) is a side view of the hosel, and FIG. 3 (b) is a cross-sectional view taken along the line BB of FIG. 3 (a). It is the IV-IV sectional view taken on the line of FIG. It is the VV sectional view taken on the line of FIG. It is a top view of the hosel which attached the elastic material. It is a perspective view which shows the attachment and replacement | exchange method of a shaft. It is a block diagram of the hosel which concerns on another embodiment. It is a block diagram of the hosel which concerns on another embodiment. 1 is a front view of a golf club according to an embodiment. It is a side view of a grip. It is sectional drawing of a grip. FIG. 13 is a sectional view taken along line XIII-XIII in FIG. 12. FIG. 14 is an enlarged view of FIG. 13. It is the XV-XV line expanded sectional view of FIG. It is a front view of the golf club head concerning a different embodiment. It is a side view of the golf club head concerning another embodiment. It is a disassembled perspective view which shows another embodiment.

Explanation of symbols

1, 1A, 1B, 1C golf club head 2 head body 2e heel portion 2t thick portion 2w weight bis 3,3 C, 10, 20 hosel 3a, 11 and 21 the shaft insertion hole 3b, 12, 22 cylindrical body 3c, 13 , 23 taken with pieces 3d, 14, 24 female screw hole 3f protruding portions 4 shaft 5 hosel insertion hole 5b cylinder insertion portion 5c preparative attached piece insertion portion 5f recessed portion 6 small holes 7 screw 9 grip 9a thick portion 9c protruding Section

Claims (8)

In a golf club head having a head body having a face surface and a hosel separate from the head body, the hosel being detachably attached to the head body.
The hosel includes a cylindrical body having a hosel hole into which a shaft is inserted , and a mounting piece that protrudes from the side surface of the cylindrical body toward the rear side of the head and extends in a direction parallel to the cylindrical axis of the cylindrical body. Has
The head body is provided with a hosel insertion hole into which the hosel is inserted,
The hosel insertion hole is provided with a cylindrical body insertion portion, wherein the cylindrical body is inserted, and a mounting piece insertion portion to which the mounting piece is inserted,
The mounting piece is provided with a plurality of female screw holes spaced apart in the vertical direction,
The heel portion of the head body is provided with a plurality of small holes so as to be coaxial with each female screw hole,
A golf club head, wherein the hosel is fixed to the head body by screwing a screw into each female screw hole through the small hole . Oite to claim 1, golf club head at least partially elastic material, characterized in that it is interposed between the inner and the hosel outer surface of the hosel insertion hole. In Claim 1 or 2, a leaf spring protrudes from a side circumferential surface on the distal end side in the insertion direction of the hosel, and a recess is provided on the inner circumferential surface of the hosel insertion hole, and the leaf spring is engaged.
A golf club head, wherein pores are provided through the outer surface of the head body so as to reach the recess. 3. A recess according to claim 1, wherein a protrusion urged in a protruding direction by a spring protrudes from a side peripheral surface at a distal end side in the insertion direction of the hosel, and the protrusion engages with an inner peripheral surface of the hosel insertion hole. Is provided,
A golf club head, wherein pores are provided through the outer surface of the head body so as to reach the recess. Golf has a golf club head according to any one of claims 1 to 4, the distal end side is inserted into the hosel bore, a shaft is secured to the hosel with an adhesive, and a grip attached to the shaft club.   6. The golf club according to claim 5, wherein the grip has a protruding portion extending in a longitudinal direction of the shaft. The golf club according to claim 6 , wherein the ridge portion is provided on a surface facing the ground in an address state. A method for replacing the shaft of the golf club according to any one of claims 5 to 7 with a new shaft,
Create a new hosel-shaft assembly by attaching a new shaft to the hosel of the same type as the hosel of the head body in advance.
A method for exchanging a shaft of a golf club, comprising: removing a hosel attached to the golf club from the head body; and attaching a new hosel-shaft coupling body to the head body.

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