JP2014008110A - Golf club - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a golf club capable of adjusting the whole length of the club in a non-step manner.SOLUTION: The golf club includes a head H mounted to a tip of a shaft S via a length adjustment mechanism 20. The length adjustment mechanism 20 includes: a hosel 16; the tip part of the shaft S; a sleeve 17 to which a length adjustment body 21 is coupled; and a bolt 24 for fixing the length adjustment body 21 to a bottom part 22 of the hosel 16. The length adjustment body 21 and the sleeve 17 are configured to be threadably engageable with each other, an axial length is adjusted by adjusting a mutual-screwing amount, whereby a club length is adjustable in a non-step manner.

Description

  The present invention relates to a golf club, and more particularly, to a golf club whose length can be adjusted steplessly.

As described in the rule book, the length of the golf club is generally the distance from the intersection of the two surfaces of the horizontal surface and the sole surface when the golf club is placed on the horizontal surface to the upper end of the grip. The length is not only an element for determining the flight distance of the ball together with the loft angle, but also an element for ease of swinging.
In general, a variety of golf clubs called drivers are commercially available, ranging from a short type of 42.5 inches to a long type exceeding 47 inches. The actual situation is to purchase the one with the length that seems to be optimal in consideration of such factors.

Since such a golf club has a predetermined overall length, for example, when a golf club is desired to be held longer, the grip position must be changed. In this case, since the grip is tapered, an area having a thickness different from the thickness of the position where the grip is normally held is gripped, which causes a sense of discomfort and disturbs the shot.
Therefore, there has been proposed a golf club that can change the length of the golf club without changing the position where the grip is held (see, for example, Patent Documents 1 and 2).

JP 2010-213859 A JP 2008-29691 A

The golf clubs described in Patent Documents 1 and 2 make it possible to shift the tip position of the shaft in the axial direction of the hosel with respect to the hosel provided in the head. It is not a stepless adjustment that makes the length adjustment fine. In other words, the devices described in Patent Documents 1 and 2 cannot perform so-called analog length adjustment.
Therefore, in the current situation where user needs are diversifying, the actual situation is that the needs are not sufficiently met.
In addition, when changing the length of the golf club, various dedicated parts are required, and there are not only difficulties in manufacturing the parts, but also the complexity that the user must manage the attached parts.

  An object of the present invention is to provide a golf club in which a shaft position in a hosel of a head is configured to be movable along its axial direction, and the total length can be adjusted so that the movement can be performed steplessly. There is.

In order to achieve the above object, the present invention employs the structure described in the claims, and specifically includes a shaft, a head provided at the tip of the shaft, and the shaft and the head. In a golf club including a length adjusting mechanism provided therebetween,
The length adjusting mechanism includes a bottomed hosel provided on the head, a sleeve having a shaft end connected to the rear end side and a length adjusting body connected to the tip end, and the length adjusting mechanism. Fixing means for fixing the body to the bottom of the hosel,
The length adjusting body and the sleeve are provided so as to be capable of being screw-engaged with each other, and the length in the axial direction is provided to be adjustable by adjusting the screwing amount.

  In the present invention, the length adjusting body has an axial shape, and has a male screw on its outer periphery, a rotation restricting portion that restricts rotation in the hosel, and the sleeve is a female screw that engages with the male screw. Is preferably provided on the inner peripheral side.

  Furthermore, a wedge-shaped portion that is eccentric from the axial center of the sleeve is provided on the distal end side of the sleeve, and a first lock member is provided in the wedge-shaped portion so as to be fitted therein, while a second end is provided on the outer peripheral portion of the rear end of the sleeve. A locking member is disposed, and when the length adjusting body is fixed to the bottom of the hosel by the fixing member, the second locking member can be engaged with the upper end of the hosel in a non-rotatable state; the sleeve and the length adjusting body; The sleeve can be provided so as to be fixed to the hosel in a state where the relative movement in the axial direction is restricted.

According to the present invention, the length adjusting body and the sleeve are screw-engaged, and by adjusting the screwing amount, the axial length which is their entire length can be adjusted and set to a desired length. By fixing the length adjusting body to the hosel in this state, the length of the golf club can be finely and steplessly performed.
Therefore, it can be expected that more users' requests will be satisfied as compared with the case where the length is selectively adjusted by interposing parts such as spacers.

Further, since the wedge-shaped portion is provided on the sleeve and the first lock member can be fitted to the wedge-shaped portion, the sleeve and the length adjusting body can be firmly integrated.
In addition, when the length adjuster is fixed to the bottom of the hosel, the length adjuster is non-rotatably engaged with the hosel, and the second lock member is non-rotatably engaged with the upper end of the hosel. The risk of the shaft rotating when the ball is hit can be reliably eliminated.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. The principal part sectional view which shows the state which lengthened the golf club. The exploded view of FIG. (A) is a front view of a sleeve, (B) is the longitudinal cross-sectional view. (A) is a front view of a length adjustment body, (B) is the longitudinal cross-sectional view, (C) is a bottom view. (A) is a top view of a 1st locking member, (B) is a front view, (C) is CC sectional view taken on the line of FIG. 6 (A). (A) is a front view of a 2nd lock member, (B) is the longitudinal cross-sectional view, (C) is a bottom view, (D) is a front view of an elastic member, (E) is the top view.

Hereinafter, an embodiment in which the present invention is applied to a golf club head called a driver will be described with reference to the drawings.
In this specification, unless otherwise specified, the terms “tip” and “bottom”, which indicate the position or direction, are used for the head side when viewed from the shaft, and “rear”, “Up” is used on the opposite side, ie the side to which the grip is attached.

As shown in FIGS. 1 and 2, the golf club 10 according to the present embodiment includes a shaft S, a head H provided at the tip of the shaft S, and a length adjustment provided between the shaft S and the head H. Mechanism 20. A grip is provided at the rear end of the shaft S on the opposite side (not shown).
The head H is provided in a hollow with a crown surface 11, a side surface 12, a sole surface 13 and a face surface 14. A bottomed cylindrical hosel 16 is integrally provided inside the crown surface 11 from the heel 15 side toward the sole surface 13. One end side (tip end side) of the shaft S is received inside the hosel 16 via the sleeve 17.

  The length adjusting mechanism 20 includes the hosel 16 and the sleeve 17, and a length adjusting body 21 that is screw-engaged with the sleeve 17 and adjusts an axial length of the sleeve 17 by adjusting a screwing amount; Bolts 24 as fixing means for fixing the length adjusting body 21 to the bottom portion 22 of the hosel 16 and first and second outer circumferences (front end side outer circumference) and upper outer circumference (rear end side outer circumference) of the sleeve 17 in FIG. The first and second lock members 26 and 27, and the elastic member 28 interposed between the length adjusting body 21 and the bottom portion 22 are configured.

  As shown in FIG. 3, the hosel 16 includes a cylindrical hosel body 29 and a reduced portion 30 that is continuously provided on the lower side thereof and has a square cross-sectional shape. 30 is provided at the bottom. A step portion 30 </ b> A for narrowing the inner diameter is formed on the inner periphery of the intermediate portion of the reduction portion 30, and the step portion 30 </ b> A is configured to act as a receiving portion for the elastic member 28. Further, the bottom portion 22 is formed with an insertion hole 22A for a bolt 24 at the center thereof. The bottom 22 forms a recess 32 that partially sinks the sole surface 13, and the bolt 24 is operated in the recess 32. In addition, in the upper end, that is, the rear end of the hosel 16 in the figure, recesses 16A are formed at predetermined intervals in the circumferential direction.

  As shown in FIGS. 3 and 4, the sleeve 17 has a cylindrical shape that can be inserted into and removed from the hosel 16, and a male screw 33 (reverse screw) is formed along the axial direction on the outer peripheral surface thereof. A partition wall 34 is formed in the inner intermediate portion of the sleeve 17. The distal end of the shaft S is accommodated in an upper space which is a rear region with respect to the partition wall 34, and the shaft S is fixed to the sleeve 17 with an adhesive, whereby the sleeve 17 is integrally formed on the distal end side of the shaft S. Connected. A female screw 36 is formed on the inner peripheral surface of the sleeve 17 on the tip side of the partition wall 34. Further, at the lower end of the sleeve 17, a short cylindrical wedge-shaped portion 37 that is eccentric with respect to the axial center of the sleeve protrudes, and this wedge-shaped portion 37 bites into the inner portion of the first lock member 26. It is supposed to be. The sleeve 17 has an outer diameter that does not contact the inner peripheral surface of the hosel 16 when the sleeve 17 is positioned in the hosel 16.

  The length adjusting body 21 is formed in an axial shape, and as shown in FIG. 5, a columnar portion 21 </ b> A having a male screw 40 formed on the outer periphery thereof and a distal end side that is one end side of the columnar portion 21 </ b> A 30 and a prism portion 21 </ b> B constituting a rotation restricting portion. The prism portion 21B is located in the reduced portion 30 of the hosel 16, and a screw hole 42 is formed at a tip thereof, that is, a lower end surface in FIG. 5, and the screw hole 42 is inserted through the bottom portion 22 from the recess 32 side. The bolt 24 is screwable.

  As shown in FIG. 6, the first lock member 26 has a nut-like appearance provided with an internal thread 44 (see FIG. 6C) on the inner peripheral side that is engaged with the external thread 40 of the length adjusting body 21. It has a shape. On the one end side of the first lock member 26, an engagement recess 46 that receives and wedges in the wedge-shaped portion 37 is formed. The engaging recess 46 is formed with its axis decentered with respect to the central axis of the female screw 44, and is configured to increase the engaging force to the wedge-shaped portion 37.

  The second lock member 27 is provided in a stepped nut shape that is screwed into the outer periphery of the sleeve 17. As shown in FIGS. 7A to 7C, the second lock member 27 includes a female screw (reverse screw) 50 on the inner periphery, and the outer peripheral surface has the same outer diameter as the rear end outer diameter of the hosel 16. And a small diameter portion 53 smaller than the large diameter portion 52, and protrusions 54 are formed at equal intervals along the circumferential direction of the small diameter portion 53. These protrusions 54 are respectively received in recesses 16 </ b> A provided at the rear end of the hosel 16, thereby restricting the rotation of the second lock member 27.

  The elastic member 28 is disposed in the reduced portion 30 of the hosel 16, and as shown in FIGS. 7D and 7E, a plate-like portion 60 and one surface of the plate-like portion 60. And a spring portion 61 provided on the lower surface. The plate-like portion 60 has a square planar shape, and an insertion hole 60 </ b> A for the bolt 24 is formed at the center thereof. This elastic member 28 is accommodated immediately above the bottom portion 22 of the hosel 16 with the spring portion 61 in the lower position.

  Next, a method for adjusting the length of the golf club 10 in the present embodiment will be described.

It is assumed that the initial setting is in the shortest state as shown in FIG.
Here, in order to increase the length, first, the bolt 24 is loosened and extracted from the length adjusting body 21, while the shaft S is extracted from the hosel 16 together with the sleeve 17. At this time, the first and second lock members 26 and 27 are attached to the shaft S side.

  Next, the first lock member 26 is rotated in the loosening direction to be removed from the length adjusting body 21, and the two companies are relatively rotated in a direction in which the distal end side of the length adjusting body 21 further protrudes from the sleeve 17, thereby increasing the total length thereof. .

  The first lock member 26 is attached to the outer periphery of the length adjusting body 21 in a state where the entire length is set to a desired length by the sleeve 17 and the length adjusting body 21. At this time, the wedge-shaped portion 37 of the sleeve 17 is digged into the engaging recess 46 of the first lock member 26, whereby the sleeve 17 and the length adjusting body 21 are firmly integrated.

  Thereafter, the sleeve 17 and the length adjusting body 21 are inserted into the hosel 16, and the end face of the prism portion 21 </ b> B of the length adjusting body 21 is placed on the plate-like portion 60 of the elastic member 28 accommodated on the bottom 22 side of the hosel 16. Abut. In this state, the second lock member 27 is rotated and advanced toward the distal end side of the sleeve 17, and the second lock member 27 is moved to the hosel 16 in a state where the protrusion 54 of the second lock member 27 corresponds to the position of the recess 16A. Touch the back end of

  Next, the bolt 24 is inserted from the bottom 22 side and screwed into the length adjusting body 21. By this screwing, the length adjusting body 21 moves forward in the hosel 16, and the tip surface of the prism portion 21 </ b> B presses the plate-like portion 60 of the elastic member 28 to contract the spring 61, and at the same time, the second lock member 27. The protrusion 54 enters the recess 16 </ b> A, and the fixing is completed at the position where the protrusion 54 hits the bottom of the recess 16.

  Therefore, according to the present embodiment, it is possible to provide a golf club capable of adjusting the length in a stepless manner only by adjusting the relative position in the axial direction between the length adjuster 21 and the sleeve 17.

The best configuration, method and the like for carrying out the present invention have been disclosed in the above description, but the present invention is not limited to this.
That is, although the present invention has been particularly shown and described with respect to specific embodiments, it should be understood that the present invention is not limited to the embodiments described above without departing from the scope of the technical idea and object of the present invention. The trader can make various changes.

For example, in the above-described embodiment, the rotation restricting portion is configured by the prism portion 21B of the length adjusting body 21 and the reducing portion 30 of the hosel 16, but the present invention is not limited to this, and the first lock member 26 is not limited thereto. However, it may be set to a shape that cannot rotate in the hosel 16.
Furthermore, the elastic member 28 may be a molded product using a resin or rubber that returns to the initial shape when the elastic member 28 is compressed and deformed and the compression force is released. The elastic member 28 is not necessarily provided.
Further, the fixing means is not limited to the bolt 24. For example, when the prism portion 21B of the length adjusting body 21 has a length penetrating the bottom portion 22 and a screw is formed on the outer periphery thereof, A nut member that engages with the screw can be substituted.
Further, the target club of the present invention is not limited to a driver, and can be applied to fairway woods and utilities, and does not prevent application to iron golf clubs.
In short, the present invention suffices as long as the total length of the golf club can be adjusted steplessly.

S ... shaft, H ... head, 10 ... golf club, 16 ... hosel, 17 ... sleeve,
DESCRIPTION OF SYMBOLS 20 ... Length adjustment mechanism, 21 ... Length adjustment body, 22 ... Bottom part, 24 ... Bolt (fixing means), 21B ... Square column part (rotation restriction part) 30 ... Reduction part (rotation restriction part) 37 ... Wedge-shaped part, 26 ... 1st lock member, 27 ... 2nd lock member

Claims (3)

In a golf club including a shaft, a head provided at the tip of the shaft, and a length adjusting mechanism provided between the shaft and the head,
The length adjusting mechanism includes a bottomed hosel provided on the head, a sleeve having a shaft end connected to the rear end side and a length adjusting body connected to the tip end, and the length adjusting mechanism. Fixing means for fixing the body to the bottom of the hosel,
2. The golf club according to claim 1, wherein the length adjusting body and the sleeve are provided so as to be capable of being screw-engaged with each other, and the length in the axial direction can be adjusted by adjusting the screwing amount.   The length adjusting body has a shaft shape and has a male screw on the outer periphery thereof, and a rotation restricting portion that restricts rotation in the hosel, and the sleeve has a female screw that engages with the male screw on the inner peripheral side. The golf club according to claim 1, further comprising:   A wedge-shaped portion eccentric from the axial center of the sleeve is provided on the distal end side of the sleeve, and a first lock member is fitted to the wedge-shaped portion, and a second lock member is provided on the outer peripheral portion of the rear end of the sleeve. When the length adjusting body is fixed to the bottom of the hosel with the fixing member, the second lock member can be engaged with the upper end of the hosel in a non-rotatable state, and the shaft of the sleeve and the length adjusting body The golf club according to claim 1, wherein the sleeve is fixed to the hosel in a state in which the directional relative movement is restricted.

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