JP2017124092A - Golf club - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a golf club having a sleeve capable of accommodating to all sizes of a shaft tip diameter, while suppressing increase in weight of the sleeve.SOLUTION: A golf club 1 includes: a head 2 having a hosel hole 3H; a sleeve 5 having a sleeve shaft insertion hole 9 and being inserted into the hosel hole 3H; and a shaft 4 inserted into the sleeve shaft insertion hole 9. The sleeve 5 is so configured that a center 5A of a sleeve hosel upper face contact part 5s and a center 9A of a sleeve upper part opening 9h are not same in a lateral direction Y, an inclination angle of the upper side face of the sleeve 5 is not constant, and inclination angles α and β with respect to a longitudinal direction Z are more than 0° and not more than 20°.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a golf club having a sleeve.

As a golf club capable of adjusting characteristics such as a lie angle and a slice angle, in Patent Document 1, as shown in FIG. 7, a sleeve-like shaft case 15 is fixed to the tip of a shaft 14, and the shaft case 15 is used as a head. A golf club 11 is described which is inserted into 12 hosel 13 and fixed by a screw member. Since the axial line direction a ₂ of the shaft insertion hole of the shaft case 15 is inclined by an angle θ with respect to the axial line direction a ₁ of the hosel 13, by changing the circumferential phase of the shaft case 15, the shaft 14 By changing the tilt direction, characteristics such as the lie angle and slice angle can be adjusted.

  7A to 7D show a state in which the tilt direction of the shaft is changed in the golf club 11 disclosed in Patent Document 1. FIG. In FIG. 7A, the shaft 14 is inclined most toward the heel side. In FIG. 7B, the shaft 14 is inclined most toward the toe side. In FIG.7 (c), the shaft 14 has inclined in the most rear side. In FIG. 7 (d), the shaft 14 is inclined most forward.

  Patent Documents 2 to 5 describe similar structures in which the insertion angle of the shaft to the head can be changed.

JP 2011-217946 A JP2011-103985A Utility Model Registration No. 3181471 JP 2009-291602 A JP 2013-180039 A

  The diameter of the shaft tip is 1W (driver), FW (fairway wood), UT (utility), and iron.

  If the conventional sleeve structure is applied to a shaft having a shaft with a larger tip diameter than that, it is necessary to enlarge the shaft insertion hole of the sleeve. There is. Therefore, if the outer diameter of the sleeve is increased so that the thickness is sufficient, the outer diameter of the hosel of the head needs to be increased correspondingly.

  If the outer diameter of the hosel of the head is made larger than before, the head weight increases, the weight of the corresponding sleeve also increases, and there may be a problem that the user feels uncomfortable.

  An object of the present invention is to provide a golf club having a sleeve that is easy to hold at the time of addressing and that can accommodate the size of the shaft tip diameter while suppressing an increase in the weight of the sleeve.

  The golf club of the present invention is a golf club having a head having a hosel hole, a sleeve shaft insertion hole, a sleeve inserted into the hosel hole, and a shaft inserted into the sleeve shaft insertion hole. In the lateral direction, the center of the sleeve hosel upper surface contact portion and the center of the sleeve upper opening are not the same in the lateral direction, the inclination angle of the upper side surface of the sleeve is not constant, and the inclination angle with respect to the vertical direction exceeds 0 °, 20 It is characterized by being less than °.

  In one aspect of the present invention, the sleeve upper opening opens in the lateral direction at least partially beyond the outermost peripheral position of the sleeve middle portion side surface.

  In one aspect of the present invention, the sleeve shaft insertion hole is provided with a sleeve shaft insertion hole lower portion and a sleeve shaft insertion hole upper portion, and the diameter of the sleeve shaft insertion hole upper portion is larger than the diameter of the sleeve shaft insertion hole lower portion. Is big.

  In one aspect of the present invention, a sleeve shaft insertion hole transition portion that transitions from the lower portion of the sleeve shaft insertion hole to the upper portion of the sleeve shaft insertion hole is provided, and the sleeve shaft insertion hole transition portion has a curvature.

  The golf club according to the present invention is easy to hold at the time of addressing, and can cope with the size of the shaft tip diameter while suppressing an increase in the weight of the sleeve.

It is sectional drawing of the hosel vicinity of the golf club which concerns on embodiment. (A) is a front view of a sleeve, (b) is a front longitudinal cross-sectional view of a sleeve. (A) is a rear view of a sleeve, (b) is a side view of a sleeve. (A) is a perspective view from the lower part of a sleeve, (b) is a perspective view from the upper part of a sleeve. (A) is a front longitudinal cross-sectional view of a sleeve, (b) is an enlarged view of the upper part of (a). It is a longitudinal cross-sectional view of a sleeve. It is a block diagram of the conventional golf club.

  Hereinafter, the golf club 1 according to the embodiment will be described with reference to FIGS. In this golf club 1, a sleeve 5 with a shaft 4 is inserted into a hosel hole 3 </ b> H of a hosel 3 of a head 2 and is detachably attached via bolts (fixing screws) 6. The head 2 is a hollow wood type, but may be an iron type or a utility type. The hosel hole 3H has an upper end opened, and a bolt insertion hole 7a is provided in the bottom surface portion 7 at the lower end. The bolt 6 is screwed into the sleeve screw hole 6h of the sleeve 5 through the bolt insertion hole 7a. In the present invention, as shown in FIG. 5A, the direction parallel to the central axis direction 6A of the sleeve screw hole 6h is referred to as a longitudinal direction Z. The direction perpendicular to the vertical direction Z is referred to as the horizontal direction Y.

  A female spline 8a formed so as to engage with a male spline 8b of a sleeve engaging portion 5a described below is provided on the inner peripheral surface of the hosel hole upper portion 3a. The hosel hole intermediate portion 3b of the hosel hole 3H has an inner diameter into which a sleeve intermediate portion 5b of a sleeve 5 described below can be inserted. The hosel hole lower portion 3c has the same diameter as the hosel hole intermediate portion 3b.

  As shown in FIG. 2, the sleeve 5 includes a sleeve upper portion 5d, a sleeve engaging portion 5a, a sleeve intermediate portion 5b, and a sleeve lower portion 5c sequentially from the upper side. A male spline 8b is provided on the outer peripheral surface of the sleeve engaging portion 5a. The side surface of the upper portion 5d of the sleeve is composed of a cylindrical surface portion 5e and an inclined surface portion 5f that is higher than the cylindrical surface portion 5e and has a diameter that decreases toward the upper side.

  As shown in FIG. 5, the inclination angle 5f of the inclined surface portion 5f has the largest inclination angle α on one end side 5f ′ in the diameter direction and the smallest inclination angle β on the other end side 5f ″. The angle is not constant. The inclination angle gradually decreases from one end side 5f 'to the other end side 5f' '. In the lateral direction, when the center of the sleeve hosel upper surface contact portion and the center of the sleeve upper opening are not the same, if the inclination angle is constant, the outer diameter of the sleeve upper portion may be increased and the weight of the sleeve may be increased. . When the outer diameter of the upper portion of the sleeve is increased, it is necessary to increase the outer diameter of the hosel of the head so as to correspond to it, and the weight of the head is also increased.

  The inclination angle in the vertical direction of the inclined surface portion 5f is more than 0 °, particularly preferably 1 ° or more, preferably 20 ° or less, particularly preferably 15 ° or less. Thereby, an increase in the weight of the sleeve can be suppressed. Further, the difference in outer diameter between the shaft outer diameter and the sleeve top surface 5g can be reduced. As a result, as before, a ferrule having an inclined angle on the side surface is attached to the shaft tip side, and the ferrule is brought into contact with the sleeve top surface 5g to reduce the difference between the outer diameter of the shaft and the outer surface of the sleeve. There is no need for such. Further, the conventional problem that the portion protruding from the hosel of the head becomes the upper portion of the sleeve and the ferrule on the upper portion of the sleeve, and this portion is felt for a long time and difficult to hold at the time of addressing is solved. If the inclination angle is too large, the outer diameter of the upper portion of the sleeve may increase and the weight of the sleeve may increase. If it is too small, the difference between the outer diameter of the shaft and the outer diameter of the sleeve top surface 5g will increase. Sometimes it is difficult to hold. In this embodiment, α = 12 ° and β = 3 °.

  The cylindrical surface portion 5e is larger in diameter (outer diameter) than the sleeve engaging portion 5a, and a boundary portion between the cylindrical surface portion 5e and the sleeve engaging portion 5a is a stepped sleeve hosel upper surface contact portion 5s.

  The sleeve 5 is inserted into the hosel hole 3H while engaging the female spline 8a of the hosel hole 3H and the male spline 8b of the sleeve 5 until the sleeve hosel upper surface contact portion 5s contacts the upper end 3t of the hosel 3. .

  The sleeve intermediate portion 5b has a smaller diameter (outer diameter) than the sleeve engaging portion 5a and a larger diameter (outer diameter) than the sleeve lower portion 5c. The sleeve intermediate portion 5b may have at least partially an outer peripheral surface portion extending in the same direction as the longitudinal direction Z and a curved surface portion that is recessed toward the central axis of the sleeve shaft insertion hole. In this embodiment, the sleeve intermediate portion 5b has an outer peripheral surface portion extending in the same direction as the longitudinal direction Z.

  A sleeve shaft insertion hole 9 is provided downward from the sleeve top surface 5g. In this embodiment, the center axis direction 9X of the sleeve shaft insertion hole 9 is inclined with respect to the center axis direction 6A of the sleeve screw hole 6h. By tilting, characteristics such as a lie angle and a slice angle can be adjusted as in the conventional golf club head of FIG. The sleeve shaft insertion hole 9 has a large diameter sleeve shaft insertion hole upper portion 9a, a small diameter sleeve shaft insertion hole lower portion 9c, and a sleeve shaft insertion hole transition portion 9b therebetween. The diameter of the sleeve shaft insertion hole transition portion 9b is smaller toward the lower side. The inner peripheral surface of the sleeve shaft insertion hole transition portion 9 b has a curvature in the circumferential direction that curves so as to be convex toward the axis of the sleeve shaft insertion hole 9 in the longitudinal section of the sleeve 5. Therefore, when a golf ball is hit, it is possible to prevent stress from being concentrated on the shaft 4 in the vicinity between the sleeve shaft insertion hole upper portion 9a and the sleeve shaft insertion hole lower portion 9c.

  As shown in FIG. 5, the opening of the sleeve shaft insertion hole 9 in the sleeve top surface 5g is a sleeve upper opening 9h. In the lateral direction, the center 9A of the sleeve upper opening 9h is not the same as the center 5A of the sleeve hosel upper surface contact portion 5s. Thereby, it becomes possible to cope with the size of the shaft tip diameter while suppressing an increase in the weight of the sleeve. If the center 9A and the center 5A are the same, if the tip diameter of the shaft is large, the sleeve intermediate portion 5b may be too thin at the lower end of the sleeve shaft insertion hole 9, or a hole may be opened. If the thickness of the sleeve intermediate portion 5b is increased, the weight of the sleeve increases. In this embodiment, the center 9A of the sleeve upper opening 9h is closer to the other end side 5f '' than the center 5A of the sleeve hosel upper surface contact portion 5s.

  Further, as shown in FIG. 6, the sleeve upper opening 9h in the sleeve top surface 5g is at least partially beyond the outermost peripheral position 5b 'of the side surface of the sleeve intermediate portion 5b in the lateral direction. Thereby, the weight increase of a sleeve can further be suppressed. In FIG. 6, when the line extending in the vertical direction Z from the outermost peripheral position 5b ′ of the side surface of the sleeve intermediate portion 5b on the other end side 5f ″ is a vertical line H1, the other end of the sleeve upper opening 9h The portion in the vicinity of the side 5f ″ is located on the other end side 5f ″ from the vertical line H1.

  In this embodiment, when a line extending in the vertical direction from the outermost peripheral position 5b ′ of the side surface of the sleeve intermediate portion 5b in the one end side 5f ′ is a vertical line H2, the one end side of the sleeve upper opening 9h The portion in the vicinity of 5f ′ is located on the other end side 5f ″ from the vertical line H2.

  The shaft 4 and the sleeve 5 are integrated by applying an adhesive to the distal end side of the shaft 4, inserting the shaft 4 into the sleeve shaft insertion hole 9, and curing the adhesive. The golf club 1 is configured by inserting the sleeve 5 into the hosel hole 3H and screwing the bolt 6 into the sleeve screw hole 6h through the bolt insertion hole 7a.

  In the golf club 1, the center 5A of the sleeve hosel upper surface contact portion 5s and the center 9A of the sleeve upper opening 9h are not the same in the lateral direction Y of the sleeve 5, so that the outer diameter of the hosel 3 of the head 2 is maintained. It is possible to cope with the size of the tip diameter of the shaft 4 while suppressing an increase in the weight of the sleeve 5.

  In this golf club 1, since the inclined surface portion 5f is provided on the side surface of the sleeve upper portion 5d and has an inclination angle, the difference from the outer diameter of the shaft 4 is small and it is easy to hold at the time of addressing.

  Further, since the inclined surface portion 5f on the side surface of the sleeve upper portion 5d has an inclination angle, there is no need to provide a ferrule separate from the sleeve 5.

  In this golf club 1, the inclination angle of the inclined surface portion 5f on the side surface of the sleeve upper portion 5d is gradually decreased from the one end side 5f ′ to the other end side 5f ″, and in the circumferential direction of the side surface of the sleeve upper portion 5d. Since it is not constant, the weight increase of the sleeve 5 can be suppressed.

  The above embodiment is an example of the present invention, and the present invention may have a configuration other than the above.

1 Golf Club 2 Head 3 Hosel 3H Hosel Hole 4 Shaft 5 Sleeve 6 Bolt 9 Sleeve Shaft Insertion Hole

Claims (4)

A head having a hosel hole;
A sleeve having a sleeve shaft insertion hole and inserted into the hosel hole;
A golf club having a shaft inserted into the sleeve shaft insertion hole,
In the lateral direction, the center of the sleeve hosel upper surface contact portion and the center of the sleeve upper opening are not the same in the lateral direction.
A golf club characterized in that the inclination angle of the upper side surface of the sleeve is not constant, and the inclination angle with respect to the longitudinal direction is more than 0 ° and not more than 20 °. In claim 1,
A golf club characterized in that the sleeve upper opening opens at least partially beyond the outermost peripheral position of the side surface of the sleeve intermediate portion in the lateral direction. In Claim 1 or 2, the sleeve shaft insertion hole is provided with a sleeve shaft insertion hole lower portion and a sleeve shaft insertion hole upper portion,
A golf club characterized in that the diameter of the upper portion of the sleeve shaft insertion hole is larger than the diameter of the lower portion of the sleeve shaft insertion hole. In Claim 3, the sleeve shaft insertion hole transition part which shifts from the sleeve shaft insertion hole lower part to the sleeve shaft insertion hole upper part is provided,
The golf club according to claim 1, wherein the sleeve shaft insertion hole transition portion has a curvature.

Images