JP3134206U - Golf club - Google Patents

Abstract

[PROBLEMS] To easily and finely adjust a golf club's loft angle and the like according to a player's body shape and preference even after purchasing a golf club. Provide an adjustable golf club.
A shaft tip continuous portion 15 that intersects the axis of the golf club shaft at an angle of 4 ° to 5 ° is attached to a tip of the golf club shaft 11 on the golf club head 21 side, and an outer periphery of the shaft tip continuous portion is provided. The inclination of the golf club shaft relative to the golf club head viewed from one direction is adjusted by screwing the male screw threaded into the hosel 23 and turning it. Thereafter, the fixing nut 17 is connected to the shaft tip continuous portion. And the shaft main body 13 side of the hosel is tightened to change the loft angle of the golf club.
[Selection] Figure 1

Description

  The present invention relates to a golf club shaft, and more particularly to a golf club shaft in which the face angle, lie angle and loft angle (hereinafter referred to as “loft angle”) of a golf club head can be finely adjusted when assembled. is there.

  In general, it is desirable that the golf club head be perpendicular to the hitting direction (target direction) at the time of impact of hitting a golf ball with a golf club, but there are actually subtle differences depending on the wrinkle of the golf player. Also, if the golf club head is out of the direction of the ball at the time of impact, the ball will rotate in the horizontal direction and become slices or hooks. Are intertwined, and there is a limit to the adjustment of the swing, and it is difficult to obtain a ball muscle that the person thinks.

There are various types of golf club loft angles, etc., depending on the player's body shape and play style. Golf clubs that can be changed have been proposed.
For example, there is a golf club disclosed in Japanese Patent Application Laid-Open No. 2001-46557, and this golf club provides a golf club in which the lie angle of the golf club can be easily changed according to the body shape and preference of the player. The structure of the golf club head is fixed to the inside of the golf club head in an inclined state, the guide hole is formed in the plate to guide the inclination angle of the club shaft, and the guide hole corresponds to the guide hole. The shaft fixing tube is attached when the golf club head is inserted, and the club shaft is fixed while being inserted into the shaft fixing tube.

However, the golf club disclosed in Japanese Patent Laid-Open No. 2001-46557 has a lie angle of the golf club depending on the position and number of guide holes drilled in the plate (in the embodiment, drilled at five positions). The lie angle cannot be changed continuously and subtly.
In order to solve this problem, the present applicant has proposed a golf club that can arbitrarily change the loft angle of the golf club, one of which is disclosed in JP-A-2002-282400, The other is disclosed in Japanese Patent Application Laid-Open No. 2003-70940.

  As shown in FIG. 4, the golf club disclosed in Japanese Patent Application Laid-Open No. 2002-282400 is bent at the tip portion of the shaft 101 at an arbitrary angle, and the bent portion 103 itself is a hosel (not shown) of the golf club head. The angle of the axis of the shaft 101 with respect to the axis of the hosel seen from one direction is changed by inserting and turning the shaft 101, and the shaft 101 is fixed to the hosel by glueing at a predetermined angle. Yes.

The golf club disclosed in Japanese Patent Application Laid-Open No. 2003-70940 will be outlined based on FIG.
As shown in FIG. 5, the hosel insertion portion 203 is connected and fixed to the tip portion of the shaft 201 so that the axis of the shaft 201 and the axis of the hosel insertion portion 203 intersect at a predetermined angle. The hosel insertion portion 203 includes a columnar upper insertion portion and a conical lower insertion portion, and a screw hole is formed at the tip of the lower insertion portion. Then, by inserting the hosel insertion portion 203 into the hosel 23 of the golf club head 21 and rotating it, the angle of the axis of the shaft 201 with respect to the axis of the hosel 23 seen from one direction is changed to a desired angle, Thereafter, a shaft fixing screw 207 is screwed into a screw hole formed at the tip of the hosel insertion portion 203 through a screw through hole 205 formed in the sole surface of the golf club head 21, and the shaft 201 is attached to the golf club head 21. It is supposed to be fixed.
JP 2001-46557 A JP 2002-282400 A JP 2003-70940 A

However, the golf club disclosed in Japanese Patent Application Laid-Open No. 2002-282400 has the shaft 101 glued to the hosel 23 after adjusting the angle of the axis of the shaft 101 with respect to the axis of the hosel 23. After adjusting to change, can not be adjusted again.
In addition, the golf club shaft disclosed in Japanese Patent Application Laid-Open No. 2003-70940 is provided so as to penetrate the sole surface according to the attached rules regarding the golf club of the golf rules after the shaft 201 is fixed to the golf club head 21 with the shaft fixing screw 207. The screw through hole 205 must be filled to make the sole surface flat, and the loft angle cannot be adjusted again after the screw through hole 205 is filled.

  Therefore, the present invention can easily and finely adjust the golf club's loft angle etc. according to the player's body shape and preference even after purchasing the golf club. Another object of the present invention is to provide a golf club that can be adjusted again.

A golf club according to claim 1 of the present invention is a golf club comprising a golf club head and a golf club shaft having one end connected to the grip and the other end connected to the hosel of the golf club head. And the golf club shaft comprises a pipe-shaped shaft body and a columnar shaft tip connecting portion located at the tip of the shaft body and connected to the hosel of the golf club head. The axis of the shaft and the axis of the shaft tip connecting portion are fixed to intersect with each other at a predetermined angle, and the shaft tip connecting portion has a diameter larger than the diameter of the tip portion of the shaft body, and the shaft tip connecting portion A male screw is threaded on the outer peripheral surface of the hosel, and is rotated by being screwed into the hosel, so that the axis of the shaft main body with respect to the axis of the hosel viewed from one direction. The tilt angle of the golf club shaft with respect to the golf club head is adjusted by changing the difference angle with the rotation, and the axis of the shaft body with respect to the golf club head is adjusted with an arbitrary tilt, and then the fixing nut The golf club shaft is fixed to the golf club head by screwing the shaft into the shaft connecting portion and tightening the shaft body side of the hosel with the fixing nut.
The golf club according to claim 2 of the present application is the golf club according to claim 1, wherein a predetermined angle at which an axis of the shaft tip continuous portion intersects an axis of the shaft body is approximately 4 to 5 °. It is characterized by that.
The golf club according to claim 3 of the present application is the golf club according to claim 1 or 2, wherein the end of the fixing nut opposite to the hosel is tightened with the fixing nut. The portion is covered with an elastic ring-shaped neck cover, and the neck cover has an outer diameter that is substantially the same as the outer diameter of the fixing nut, and an inner diameter that is substantially the same as the outer diameter of the tip of the shaft body. Thus, the center of the outer diameter of the neck cover and the center of the inner diameter are shifted in one direction.
Furthermore, the golf club according to claim 4 of the present application is the golf club according to claim 1 or 2, wherein the fixing nut is screwed with a fixing nut screwing portion screwed into the shaft tip continuous portion and the screw. It is characterized by comprising a fixed nut tip portion which is provided continuously with the joint portion and whose outer diameter gradually narrows toward the tip portion.

The present invention has the following effects by the above configuration.
(1) A golf club according to the present invention has a golf club shaft with respect to a golf club head by rotating a shaft tip continuous portion having an axis intersecting the axis of the shaft body at a predetermined angle with a hosel. Is adjusted, and after the adjustment, it is fixed to the golf club head by tightening with a fixing nut. Therefore, even after purchasing the golf club, the inclination of the golf club shaft with respect to the golf club head is finely adjusted. Even after the adjustment, if the fixing nut is loosened, the golf club shaft with respect to the golf club head again. Tilt can be adjusted. The fact that the loft angle of the golf club can be changed by the inclination of the golf club shaft with respect to the golf club head will be described later.
(2) When the axis of the shaft end continuous portion is about 4 ° to 5 ° with respect to the axis of the shaft body, the inclination of the golf club shaft with respect to the golf club head is about 0 ° to 8 °, or about 0 It can be changed in the range of 10 ° to 10 °, and the loft angle of the golf club can be adjusted in a wide range.
(3) Since the axis of the shaft tip continuous portion intersects with the axis of the shaft main body at a predetermined angle, the fixing nut after tightening with the fixing nut and the shaft main body are about 1 mm in one direction. A gap is created. On the other hand, the outer diameter of the ring-shaped neck cover is substantially the same as the outer diameter of the fixing nut, the inner diameter is substantially the same as the outer diameter of the tip of the shaft body, and the center and inner diameter of the outer diameter of the joint cover Is shifted in one direction from the center. For this reason, after tightening the hosel with the fixing nut, the joint cover is brought into contact with the end of the fixing nut opposite to the hosel and rotated to cover the gap between the fixing nut and the shaft body. be able to.
(4) In addition, when using a fixed nut screwed portion that is screwed to the shaft tip continuous portion and a fixed nut that is provided continuously to the screwed portion and whose outer diameter gradually decreases toward the tip, The appearance from the hosel to the shaft body gives a clean impression.

Example 1 and Example 2 according to the best mode for carrying out the present invention will be described with reference to FIGS.
1 is a partial cross-sectional view of the golf club according to the first embodiment, FIG. 2 is a partial cross-sectional view of the golf club according to the second embodiment, and FIG. 3 shows the face surface of the golf club head and the golf club. It is explanatory drawing of the relative relationship of a club shaft.

1 to 3, reference numeral 1 denotes a golf club according to the first embodiment, reference numeral 2 denotes a golf club according to the second embodiment, reference numeral 11 denotes a golf club shaft according to the first embodiment, and reference numeral 12 denotes a golf club according to the second embodiment. Club shaft, reference numeral 13 is a shaft body, reference numeral 15 is a shaft tip connecting portion, reference numeral 17 is a fixing nut according to the first embodiment, reference numeral 18 is a fixing nut according to the second embodiment, reference numeral 181 is a fixing nut screwing portion, reference numeral Reference numeral 183 denotes a fixed nut tip, reference numeral 19 denotes a neck cover, reference numeral 21 denotes a golf club head, and reference numeral 23 denotes a hosel.
In FIG. 1 to FIG. 3, the symbol α indicates the angle formed between the axis of the shaft body and the axis of the shaft tip connecting portion, and the symbol β in FIG. 3 indicates the loft angle of the golf club head. 1 to 3 indicate the hosel axis or the golf club shaft axis.

  First, a golf club 1 according to Example 1 will be described with reference to FIGS. 1 and 3.

  The golf club 1 includes a golf club head 21 and a golf club shaft 11, and the golf club shaft 11 includes a shaft body 13, a shaft tip connecting portion 15, a fixing nut 17, and a neck cover 19.

The shaft main body 13 is a hollow pipe made of carbon graphite, and has an outer diameter gradually narrowed from the grip to the shaft tip connecting portion 15.
The shaft tip connecting portion 15 has a columnar shape and is larger in diameter than the outer diameter of the gradually narrowed tip portion of the shaft body 13, and a male screw is threaded on the outer peripheral surface thereof. At the same time, the axis of the shaft body 13 and the axis of the shaft tip connecting portion 15 are connected and fixed so that the angle α is approximately 4 ° to 5 °. The shaft tip connecting portion 15 may be made of metal or synthetic resin, and an insertion hole is formed in a cylinder having a male screw threaded on the outer peripheral surface, and the tip of the shaft body 13 is inserted into the insertion hole. After the portion is inserted, the shaft body 13 is fixed by gluing or welding, or the distal end portion of the shaft body 13 is inserted into a cylindrical body having a male screw threaded on the outer peripheral surface, and then bonded to the cylindrical body. It can be manufactured by filling with an agent or the like.

The fixing nut 17 is a cylindrical body having a female screw threaded on its inner peripheral surface, and the female screw of the fixing nut 17 is screwed into the male screw of the shaft tip connecting portion 15.
The neck cover 19 is made of synthetic rubber, and has a ring shape in which a through hole is formed in a central portion of a convex lens having a flat bottom surface and a bulging central portion of the top surface. The outer diameter of the neck cover 19 is substantially the same as the outer diameter of the fixing nut 17, and the inner diameter is substantially the same as the outer diameter of the tip end of the shaft body 13. It seems to have shifted to one side. Further, the neck cover 19 is inserted into the shaft main body 13 before attaching the shaft tip connecting portion 15 to the shaft main body 13 or before the golf club shaft 1 is screwed into the hosel 23 of the golf club head 21 described later. It is necessary to insert it into the shaft body 13.

  A female screw is threaded on the inner peripheral surface of the hosel 23 of the golf club head 21 so that the male screw of the shaft tip continuous portion 15 is screwed together. When the shaft tip connecting portion 15 is screwed into the hosel 23, the tip of the shaft tip connecting portion 15 on the shaft body 13 side protrudes from the tip of the hosel 23 by about 5 mm. .

  Next, a method for attaching and adjusting the golf club shaft 1 to the golf club head 21 will be described.

An example of how to attach and adjust the golf club shaft 11 will be described in order.
(1) First, the fixing nut 17 and the neck cover 19 are inserted into the shaft body 13 before the golf club shaft 11 is screwed into the hosel 23.
(2) The male screw of the shaft tip connecting portion 15 is screwed into the hosel 23 of the golf club head 21 and screwed to the back of the hosel 23.

(3) The shaft body 13 is rotated to the left and right with respect to the hosel 23 and adjusted so that the axis of the shaft body 13 with respect to the axis of the hosel 23 is at a desired angle when viewed from one side.
As described above, since the axis α of the shaft main body 13 and the axis of the shaft tip connecting portion 15 are fixed so that the angle α is approximately 4 ° to 5 °, for example, the golf club head 21 is placed behind (golf When viewed from the heel side of the club head 21, the position where the axis of the hosel 23 and the axis of the shaft body 13 are collinear (the axis of the shaft body 13 and the axis of the shaft tip connecting portion 15 appear to be 0 °. Position: see FIG. 3 (a)), when it is rotated 90 ° to either the left or right, the axis of the shaft body 13 is inclined from −4 ° to −5 ° with respect to the axis of the hosel 23 (see FIG. 3). 3 (b)), when the shaft body 13 is rotated by 90 ° in a different direction, the axis of the shaft body 13 is inclined + 4 ° to + 5 ° with respect to the axis of the hosel 23 (see FIG. 3C). That is, when the axis of the shaft body 13 (the axis of the golf club shaft 11) is perpendicular to the horizontal plane, the angle β (loft angle) formed by the face surface of the golf club head 21 and the vertical surface is 4 °. It becomes ˜5 ° smaller (see FIG. 3B) or 4 ° -5 ° larger (see FIG. 3C).
In this way, by rotating the shaft body 13 left and right with respect to the hosel 23, the angle β (loft angle) changes within a range from + 4 ° or + 5 ° to −4 ° or −5 °. It will be. Note that the clockwise angle with respect to the vertical line is “+”, and the counterclockwise angle is “−”. The face angle is the angle of the face with respect to the axis of the golf club shaft when the golf club is horizontally solesed, and the lie angle is the angle of the axis of the golf club shaft with respect to the ground when the golf clubs are horizontally solesed. That is, the face angle and the lie angle also change as the angle β (loft angle) changes. Therefore, by rotating the shaft body 13 to the left and right with respect to the hosel 23, the loft angle, the face angle, and the lie angle can be adjusted.

(4) After adjusting the axis of the shaft body 13 with respect to the axis of the hosel 23 to a desired angle, a fixing nut is attached to the shaft body 13 side tip of the shaft tip joint portion 15 protruding from the tip of the hosel 23. 17 is screwed in and tightened until the fixing nut 17 presses the front end portion of the hosel 23, whereby the golf club shaft 11 is firmly fixed to the hosel 23.
(5) Since the axis of the fixing nut 17 and the axis of the shaft main body 13 are bent at an angle of about 4 ° to 5 °, the shaft main body 13 and the fixing nut 17 do not adhere to each other, and a part of 1 mm By rotating the neck cover 19 having a different ring width to a position where the outer periphery of the neck cover 19 substantially matches the outer periphery of the fixing nut 17 while pressing the lower surface of the neck cover 19 against the tip of the fixing nut 17. This gap is hidden and cannot be seen.

  According to the above procedure, the golf club shaft 11 is adjusted and attached to the golf club head 21, but when readjusting, the golf club head 21 and the golf club shaft 11 are separated by performing the above procedure in reverse. Therefore, the above procedure may be followed again.

  Next, the golf club 2 according to the second embodiment will be described with reference to FIGS. 2 and 3. The golf club 2 has substantially the same configuration as that of the golf club 1, and the difference is that the golf club shaft 12 is configured. Since the shape of the fixing nut 18 to be performed is described here, the different configuration will be mainly described here.

  The golf club 2 includes a golf club head 21 and a golf club shaft 12, and the golf club shaft 12 includes a shaft body 13, a shaft tip connecting portion 15, a fixing nut 18, and a neck cover 19. The golf club shaft 2 includes a shaft main body 13, a shaft tip connecting portion 15, and a fixing nut 18.

  The configurations of the shaft main body 13 and the shaft tip connecting portion 15 are the same as those in the first embodiment, and thus the description thereof is omitted. Further, since the hosel 23 is the same as that of the first embodiment, the description thereof is omitted.

  The fixed nut 18 is connected to a cylindrical fixed nut screwed portion 181 having a female screw threaded on the inner peripheral surface and a fixed nut screwed portion, and the outer diameter of the fixed nut 18 decreases gradually toward the tip. The internal nut of the tip of the fixing nut tip 183 is not threaded, and the inner diameter of the tip is about 1.0 mm larger than the outer diameter of the tip of the shaft body 13. The fixing nut 18 needs to be inserted into the shaft body 13 before the shaft tip connecting portion 15 is attached to the shaft body 13.

  Next, a method for attaching and adjusting the golf club shaft 12 to the golf club head 21 will be described.

An example of how to attach and adjust the golf club shaft 12 will be described step by step.
(1) The male screw of the shaft tip connecting portion 15 is screwed into the hosel 23 of the golf club head 21 and screwed into the hosel 23.
(2) The shaft body 13 is rotated to the left and right with respect to the hosel 23 and adjusted so that the axis of the shaft body 13 with respect to the axis of the hosel 23 is at a desired angle. Note that the adjustment method and its effects are the same as those in the first embodiment, and thus the description thereof is omitted.

(3) When the fixing nut 18 is screwed into the shaft body 13 side tip of the shaft tip connecting portion 15 protruding from the tip of the hosel 23 and tightened until the fixing nut 18 presses the tip of the hosel 23. The golf club shaft 2 is firmly fixed to the hosel 23.
At this time, the shaft main body 13 and the fixing nut 18 are not in close contact with each other, and the fixing nut tip 183 of the fixing nut 18 and the shaft main body 13 have a gap of about 1 mm at the maximum.

  According to the above procedure, the golf club shaft 12 is adjusted and attached to the golf club head 21, but when readjusting, the golf club head 21 and the golf club shaft 12 are separated by performing the above procedure in reverse. Therefore, it is the same as in the first embodiment that the above procedure is repeated again.

1 is a partial cross-sectional view of a golf club according to a first embodiment. FIG. 2 is a partial cross-sectional view of the golf club according to the second embodiment. FIG. 3 is an explanatory view of the relative relationship between the face surface of the golf club head and the golf club shaft. 1 is a partial perspective view of a golf club shaft disclosed in JP-A-2002-282400. 1 is a cross-sectional view of a golf head body disclosed in Japanese Patent Laid-Open No. 2003-70940.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Golf club which concerns on Example 1 2 Golf club which concerns on Example 2 11 Golf club shaft which concerns on Example 1 12 Golf club shaft which concerns on Example 2 13 Shaft body 15 Shaft front end connection part 17 Fixation which concerns on Example 1 Nut 18 Fixed nut 181 according to Embodiment 2 181 Fixed nut screwing portion 183 Fixed nut tip 19 Neck cover 23 Hosel

Claims (4)

A golf club comprising a golf club head and a golf club shaft having one end connected to the grip and the other end connected to the hosel of the golf club head.
An internal thread is threaded on the inner peripheral surface of the hosel,
The golf club shaft comprises a pipe-shaped shaft main body and a columnar shaft front-end continuous portion located at the front end of the shaft main body and connected to the hosel of the golf club head,
The axis of the shaft body and the axis of the shaft tip connecting portion are fixed to intersect with each other at a predetermined angle,
The shaft tip continuous portion has a diameter larger than the diameter of the tip portion of the shaft main body, and an external thread is threaded on the outer peripheral surface of the shaft tip continuous portion, and is screwed into the hosel to rotate. The inclination of the golf club shaft with respect to the golf club head is adjusted by changing the angle at which the axis of the shaft body intersects with the axis of the hosel as viewed from the direction with rotation,
After the axis of the shaft main body with respect to the golf club head is adjusted with an arbitrary inclination, a fixing nut is screwed into the shaft tip connecting portion and the shaft main body side of the hosel is tightened with the fixing nut. A golf club characterized in that a golf club shaft is fixed to the golf club head.   2. The golf club according to claim 1, wherein a predetermined angle at which an axis of the shaft tip continuous portion intersects with an axis of the shaft main body is approximately 4 to 5 °. After tightening with the fixing nut with respect to the hosel, the end of the fixing nut opposite to the hosel is covered with an elastic ring-shaped neck cover,
The outer diameter of the neck cover is substantially the same as the outer diameter of the fixing nut, and the inner diameter thereof is substantially the same as the outer diameter of the tip end of the shaft body. The golf club according to claim 1, wherein the golf club is shifted in one direction.   The fixing nut includes a fixing nut screwing portion screwed to the shaft tip connecting portion, and a fixing nut tip portion connected to the screwing portion and having an outer diameter gradually narrowing toward the tip. The golf club according to claim 1, wherein the golf club is characterized.

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