JP6137014B2 - Golf club - Google Patents

Description

  The present invention relates to a golf club, and more particularly to a golf club capable of adjusting a loft angle.

The loft angle of the golf club head is an angle formed by a vertical plane including the center line of the shaft and the face surface, and the loft angle is an element that changes the ball launch angle and the backspin amount. Specifically, as the loft angle increases, the launch angle increases and the ball rises and the backspin amount increases. On the other hand, if the loft angle is small, the launch angle is small and the trajectory is low, and the backspin amount of the ball is also reduced. Therefore, the loft angle is an element that affects the flight distance.
For adjusting the loft angle of a golf club head, for example, the configurations described in Patent Documents 1 and 2 are known.

JP 2009-291602 A Japanese Patent No. 4545532

The golf club described in Patent Document 1 has a disadvantage that the face angle changes at the time of addressing when the loft angle is changed. Specifically, when the loft angle is decreased, the face angle is opened, and when the loft angle is increased, the face angle is closed. Therefore, the slice ball is easy to go out when the face angle is open, while the hook ball is easy to go out when the face angle is closed. For users who want to change only the loft angle, the ball launch direction varies from side to side. This is a factor that hinders stability.
In addition, the golf club has a restriction that when the loft angle is changed, the shaft rotates and the back line cannot be put into the grip.
Furthermore, what is described in Patent Document 2 is limited to putters, cannot maintain the strength at the time of hitting when applied to a golf club other than the putter, can not withstand the impact, Similar to Patent Document 1, there is a disadvantage that the face angle also changes.

  The object of the present invention is to adjust the loft angle, and even when the loft angle is changed, the face orientation is not affected, and reliability can be imparted in terms of strength. To provide a golf club.

In order to achieve the above object, the present invention employs the structure described in the claims, and specifically, a head including a shaft and a shaft insertion portion that receives the distal end side of the shaft. the shaft loft angle of Jo Tokoro a golf club comprising a securable loft angle adjustment mechanism to the shaft insertion portion,
The loft angle adjusting mechanism includes a sleeve that is attached to the distal end side of the shaft and is inserted into the shaft insertion portion, and a connecting part that connects the shaft insertion portion and the sleeve,
The connecting parts, wherein consists shaft and the shaft inserting portion and relative angle selectable plurality of connecting parts to vary the, by replacing these parts, provided such loft angle is set for each part In addition, a receiving part for the connecting part and a recessed part connected to the rear from the receiving part are formed on the sole surface side of the head, and a lower surface of the connecting part received in the receiving part and the recessed part are formed. The rear side edge portion is configured to be grounded to the ground plane.

In the present invention, before Symbol connecting part includes a bridge-like member that is placed in the receiving portion, and a bolt for threaded engagement with the sleeve through the frame-shaped member, when tightened the bolt, A configuration is adopted in which the sleeve is configured to be pulled into the shaft insertion portion.

  Furthermore, it is preferable to adopt a configuration in which loft angles are respectively displayed on the outer surfaces of the plurality of connecting parts.

According to the present invention, by using any one of a plurality of connecting parts, the shaft can be fixed to the head at a predetermined loft angle, and the parts can be simply changed by changing the connecting parts. The loft angle can be easily changed at a setting angle corresponding to.
In addition, since the lower surface of the connecting part and the edge part that forms the recess located behind this can be grounded, the head can be grounded at two places in the front-rear direction, and the head is flat when addressing The designed face angle can be maintained even if the loft angle is changed.
Furthermore, since the sleeve is drawn into the shaft insertion portion by tightening the bolt constituting the connecting part to the sleeve, the shaft mounting strength can be maintained.

FIG. 3 is a schematic partial cross-sectional view of the head viewed from the heel side in a state where the shaft of the golf club according to the present embodiment is oriented substantially perpendicular to the ground contact surface. The exploded sectional view of FIG. FIG. 3 is a partial cross-sectional view of the head viewed from the face surface side. 1 is a schematic partial cross-sectional view similar to FIG. 1 showing a state where the loft angle is changed.

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, “tip” and “lower” are used for the head side when viewed from the shaft, and “upper” is the opposite side, that is, a grip is attached. Used for side. Further, “front” is used for the front side of the face of the head, and “rear” is used for the back side thereof, and the “front-rear direction” is a direction passing through the face surface.

  As shown in FIGS. 1 and 2, the golf club 10 according to the present embodiment includes a head H including a shaft insertion portion 12 that receives the distal end side of the shaft S, and a perpendicular that is substantially orthogonal to the face surface 17 of the head H. A loft angle adjusting mechanism 14 that allows the relative angle between the shaft S and the head H to be displaced within the plane is configured.

  The head H is formed in a hollow shape having a crown surface 15, a sole surface 16, a face surface 17, and a side surface 18 constituting an outer peripheral portion from the toe side to the heel side through the back side. As shown in FIG. 3, the shaft insertion portion 12 is formed from the heel side of the crown surface 15 toward the sole surface 16. The shaft insertion portion 12 includes a peripheral wall 20 formed so that the inner dimension in the front-rear direction gradually increases as it goes downward, and a bottom wall 21 positioned below the peripheral wall 20. Are formed with long slot holes 23 in the front-rear direction, that is, in the left-right direction in FIG. A sleeve detent portion (not shown) is formed on the inner peripheral side of the upper portion of the shaft insertion portion 12, so that the shaft S cannot be rotated in the circumferential direction, and a back line can be put in a grip (not shown). It can be done. A receiving portion 24 whose lower portion is opened is formed on the lower side of the bottom wall 21 so as to form a space recessed with respect to the ground contact surface G. The sole surface 16 on the right side in FIG. A concave portion 25 is formed that extends rearward from the receiving portion 24.

  The loft angle adjusting mechanism 14 is attached to the distal end side of the shaft S and is inserted into the shaft insertion portion 12, and a connecting part 31 that fixes the shaft S to a predetermined loft angle via the sleeve 30. It consists of. The connection part 31 is arranged in the receiving part 24 and has block-shaped first and second piece members 33A and 33B (see FIG. 4) having an outer shape that fits in the receiving part 24, and each piece member 33A. , 33B and the bottom wall 21 and the distal end side (the lower end side in FIG. 1) of the sleeve 30 are connected so that the sleeve 30 and the shaft S are attracted to the bottom side in the shaft insertion portion 12. And a bolt 35 to be fixed.

  The sleeve 30 is provided with an inner diameter dimension that can receive the shaft S and fix the shaft S with an adhesive or the like. The sleeve 30 has a large-diameter portion 30A provided so that the upper portion thereof is connected to the neck portion 36 of the head H, a bottomed intermediate cylinder portion 30B continuous to the lower portion of the large-diameter portion 30A, and the intermediate cylinder portion 30B. It consists of a small-diameter cylindrical portion 30C having a screw hole 30D that is continuous with the lower portion and opens on the lower end side. The sleeve 30 is supported so that the lower portion of the large-diameter portion 30A can be angularly displaced on the inner surface side of the neck portion 36 in a vertical plane (in a plane parallel to the paper surface in the drawing) along the front-rear direction in FIG. The relative angle between the shaft S and the head H can be displaced in the vertical plane.

  As shown in FIGS. 1 and 4, the first and second piece-like members 33 </ b> A and 33 </ b> B constituting the connecting part 31 are arranged in the receiving portion 24 and communicate with the slot hole 23. Each is provided with an attached hole 37. The first piece-like member 33A has a shape that is higher in height (thickness) than the second piece-like member 33B, and is provided so that the formation position of the stepped hole 37 is relatively located on the right side. Yes. Further, the face surface 17 side of the first piece-like member 33A is chamfered so as not to receive resistance to the ground plane G. The first piece-like member 33A in the present embodiment can set the loft angle θ to 13 degrees when it is used, and the second piece-like member 33B can set the loft angle θ to 7 degrees. It is said that. These loft angles θ can be easily grasped by the user by imprinting or printing numbers on the lower surfaces of the first and second piece members 33A and 33B. In the golf club 10 according to the present embodiment, the lower surface of the piece members 33A and 33B and the rear edge 25A that forms the recess 25 are grounded to the grounding surface G, so that the grounding of the front and rear two places is performed. Even if the loft angle is realized, the face angle can be kept constant.

In the above configuration, as shown in FIG. 1 or FIG. 4, the loft angle θ in the present embodiment is determined from the first and second piece members 33A and 33B and the piece members having different loft angles that can be further expanded. Any one of them may be selected, positioned at the receiving portion 24, and the bolt 35 may be screwed into the screw hole 30D of the sleeve 30. Thereby, the formation position of the stepped hole 37 is set differently in the front-rear direction for each piece-like member 33A, 33B, so that the axis of the shaft S matches the axis of the stepped hole 37 and the loft angle Is automatically determined. When another piece-like member having a loft angle other than the above is selected, the loft angle can be set at an angle set for the piece-like member.
Note that the head H in the present embodiment is configured such that the lower surfaces of the first and second piece members 33A and 33B and the rear formation edge 25A of the recess 25 located behind the first and second piece members 33A and 33B are in contact with the ground plane G. Even if the loft angle θ is increased or decreased, the face angle is not changed.

Therefore, according to the present embodiment, the user can easily and quickly set and change the loft angle simply by adopting a member having a desired loft angle from among the plurality of piece members constituting the connecting part 31. It can be performed.
Further, since the piece-like members 33A and 33B are integrally connected to the sleeve 30 by the bolt 35, they do not fall off, and the sleeve 30 can be pulled into the shaft insertion portion 12 with a strong force. The connection strength can be maintained high.

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 present invention is applied to a driver. However, as long as the loft angle can be adjusted, the present invention can be applied to a fairway wood and a utility, as well as to an iron golf club. Absent.

  DESCRIPTION OF SYMBOLS 10 ... Golf club, 12 ... Shaft insertion part, 14 ... Loft angle adjustment mechanism, 24 ... Receiving part, 25 ... Recessed part, 25A ... Edge part, 30 ... Sleeve, 31 ... Connection parts, 33A, 33B ... 1st, 1st Two-piece member, G ... grounding surface, S ... shaft, H ... head,

Claims (3)

A shaft, a golf club comprising a head and a shaft inserting portion for receiving a distal end of the shaft, and a fixable loft angle adjustment mechanism to the shaft insertion portion of the shaft in the loft angle of Jo Tokoro,
The loft angle adjusting mechanism includes a sleeve that is attached to the distal end side of the shaft and is inserted into the shaft insertion portion, and a connecting part that connects the shaft insertion portion and the sleeve,
The connecting parts, wherein consists shaft and the shaft inserting portion and relative angle selectable plurality of connecting parts to vary the, by replacing these parts, provided such loft angle is set for each part And
Further, a receiving part for the connecting part and a recess connected to the rear from the receiving part are formed on the sole surface side of the head, and a lower part of the connecting part received in the receiving part and a rear part forming the recess A golf club characterized in that the side edge portion is in contact with a ground plane . The connecting part includes a piece-like member disposed in the receiving portion and a bolt that passes through the piece-like member and is screw-engaged with the sleeve. When the bolt is tightened, the sleeve is inserted into the shaft. The golf club according to claim 1 , wherein the golf club is configured to be pulled into the portion. The golf club according to claim 1 or 2 Symbol mounting, characterized in that each loft angle to the outer surface of the plurality of connecting parts are displayed.

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