JPH06142244A - Golf club counterbalance member, unit of the counterbalance member and golf club grip member and golf club using the counterbalance member - Google Patents

Abstract

PURPOSE:To enable a golf club to be easily reformed by providing the grip end of a golf club grip section with a weight section for adding a weight, and a projection-formed mounting section projected the weight section for insertion into the grip end and so mounted on the grip end as to be freely detachable. CONSTITUTION:A counterbalance member 1 consists of a screw member 10 and a block member 11 with the head of the member 10 buried therein. In this case, the block member 11 is preferably such a material as having a very large specific gravity. A projection-formed mounting member 12 is inserted in the grip end 5 of a grip member 5, thereby enabling the counterbalance member 1 to be mounted on the grip end 5a in such a way as freely detachable. The block member 11, the base end of a screw shaft section 10a buried in the member 11 and a screw head 10b constitute the weight section of the member 1. Consequently, the member 1 can effectively function as a counterbalance.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a golf club counterbalance member for adjusting the weight balance of a golf club, a unit of the counterbalance member, a golf club grip member using the counterbalance member, and a golf club. It is about.

[0002]

2. Description of the Related Art A golf player can obtain a flight distance of a ball by using a lightweight golf club. For this reason, lightweight golf clubs have been mainly used by powerless signier players and female players who have difficulty in delivering a golf ball.

However, when a golf player uses a lightweight golf club, when the golf club is swung up and when the swung-up golf club is lowered, the golf club is put on the wrong track due to its lightness. There was a problem of inducing a miss shot because the swing trajectory was not constant when the club was brought in.

In order to solve this problem, it has hitherto been known to attach a heavy object, a so-called counter balance member, to the grip portion of the golf club. Such a counter balance member is, for example, a thin plate made of lead, and the thin plate made of lead is wound around the grip end on the outer periphery of the grip portion of the club shaft, and then a grip member which is normally used is wound around this. The lead thin plate is fitted on the grip portion of the club shaft and fixed by an adhesive or the like. In this case, the moment of inertia of the golf club with the grip portion as the base point does not change before and after the counter balance member is attached, so that even a weak golf player can use a golf club having a relatively large weight. Therefore, the golf player can obtain the flight distance of the golf ball even if the golf club having the relatively large weight is used, as in the case of the lightweight golf club. Furthermore, since the weight of the entire golf club can be increased, it is possible to swing on a correct and stable trajectory, which can prevent miss shots.

[0005]

However, in the conventional counterbalance member, once it is attached to the grip portion of the club shaft and the grip member is fitted and fixed, the weight adjustment cannot be easily performed. There wasn't. Therefore, after the counter balance member is attached to the grip portion so that the golf club can be used once, the weight balance of the golf club is adjusted according to the ability of the golf player who uses the golf club and the shape of the swing. However, if the weight balance of this golf club is not suitable for the golf player, the golf player has to replace the golf club with a golf club having a suitable weight balance. Further, it is necessary to purchase a plurality of different types of golf clubs so that a golf club to be used at that time can be selected depending on whether the flight distance is important or the directionality of the ball is important.

[0006]

A counterbalance member for a golf club according to the present invention has a weight portion for adding weight to a grip end surface of a grip portion of the golf club, and the grip end projecting from the weight portion. The grip-end surface is detachably attached to the grip end surface by being inserted into the surface.

[0007]

According to the counterbalance member for a golf club of the present invention, by inserting the protruding mounting portion into the grip end surface of the grip portion of the golf club, it can be removably mounted on the grip end surface. Therefore, the golf player selects a counterbalance member having a weight suitable for himself from the counterbalance members of the plurality of types by detachably attaching the counterbalance members of the plurality of types to the grip end surface and sequentially making a trial hit. By attaching the selected counter balance member to the grip end surface, it is possible to easily obtain a golf club having a weight balance suitable for oneself.

Next, an embodiment of the present invention will be described with reference to the drawings.

[0009]

1 shows a counter balance member 1 for a golf club according to an embodiment of the present invention, and FIG. 2 shows a golf club 2 to which the counter balance member 1 shown in FIG. 1 is attached. Counter balance member 1 shown in FIG.
Can be attached to any of a wood club, an iron club, and a putter, and FIG. 2 illustrates a wood club.

The golf club 2 shown in FIG. 2 is a typical wood club currently on the market. To the head 4 of the wood club 2, the tip end of a slightly tapered, substantially cylindrical hollow shaft 3 is inserted and fixed by an adhesive agent, and the base end of the club shaft 3 is A grip member 5 formed from a hard rubber or the like in a hollow structure having a slightly cylindrical shape with a slight taper is fitted and fixed by an adhesive or the like. The grip member 5 has a bottomed structure that is closed on the grip end side, and the grip end surface 5a that constitutes the closed surface is
An air vent hole 6 having a diameter of about 1 to 4 mm is formed along the axis for communicating the inner space S of the club shaft 3 with the outer space.

The counter balance member 1 shown in FIG. 1 comprises a screw member 10 and a block member 11 in which the head side portion of the screw member 10 is embedded. The screw member 10 is composed of a threaded screw shaft portion 10a and a screw head portion 10b integrally formed with a base end of the screw shaft portion 10a. The screw member 10 may be a commercially available machine screw, set screw, wood screw or the like made of soft iron, brass, stainless steel or the like.

The block member 11 is preferably made of a material having a very large specific gravity such as a heavy metal such as lead or an alloy using such a heavy metal. A portion of the screw member 10 on the base end side of the screw shaft portion 10a and the entire portion of the screw head 10b are embedded and fixed to the block member 11, and only a portion of the screw shaft portion 10a on the tip end side is blocked. It projects along the axis of. The protrusion-shaped mounting portion 12 of the counter balance member 1 is configured by the protruding portion, and the counter balance is formed by the block member 11, the base end side portion of the screw shaft portion 10a embedded in the block member 11, and the screw head portion 10b. The weight portion 13 of the member 1 is configured. The projecting attachment portion 12 formed by the tip end side portion of the screw shaft portion 10a is at least screwed at the base end portion which is held in contact with the grip member 5 when attached to the grip member 5. Is preferred, and more preferably it is threaded over its entire length.

As shown in FIG. 1, the protruding mounting portion 12 is
It is preferable that the taper is formed from the base end side to the tip end side and the tip is pointed, but it is not necessarily required to be tapered, and if it can be inserted into the air vent hole 6 of the grip member 5 and attached, it will have a substantially cylindrical shape. The tip may be rounded into a substantially hemispherical shape. The shape of the cross section of the protrusion-shaped mounting portion 12 does not necessarily have to be circular, and may be hexagonal, octagonal, or the like. Therefore, the protrusion-shaped mounting portion 12
Is, as a whole, a cone shape, a hexagonal pyramid shape, an octagonal pyramid shape,
Frustoconical shape, hexagonal pyramid shape, octagonal pyramid shape, cylindrical shape,
It may have a hexagonal prism shape, an octagonal prism shape, or the like.

The length of the protruding mounting portion 12 is not particularly limited as long as the protruding mounting portion 12 can be mounted by inserting the protruding mounting portion 12 into the grip end surface 5a of the grip member 5. From the above viewpoint, 5 to 50 mm
It is preferably about 10 to 30 mm, and more preferably about 10 to 30 mm. Similarly, the diameter or major axis of the base end of the protrusion-shaped mounting portion 12 is generally about 1 to 10 mm, and more preferably about 3 to 7 mm.

As shown in FIG. 1, in order to partially embed and fix the screw member 10 in the block member 11, the material such as lead constituting the block member 11 is melted and then screwed into the molten material. The block member 11 may be insert-molded by partially inserting the member 10.
Alternatively, the block member 11 may be formed by sintering a material such as lead together with the screw member 10.

The shape of the cross section of the weight portion 13 may be a circle having substantially the same shape as the shape of the grip end surface 5a of the grip member 5, and in this case, the grip end surface 5a.
When attached to the grip member 5, the grip member 5 has a shape slightly extended in the grip end direction. However, the cross-sectional shape of the weight portion 13 may be slightly different from the shape of the grip end surface 5a. For example, it may be a circle having a diameter slightly smaller than the grip end surface 5a, or may be a hexagon, an octagon, or the like. Therefore, the weight portion 13 may have a cylindrical shape, a hexagonal prism shape, an octagonal prism shape, or the like as a whole.

The preferable weight of the counter balance member 1 differs depending on the golf player's physique, physical strength, swing shape, etc., and also the flight distance of the ball is emphasized or the directionality of the ball is emphasized. It also depends on whether or not the trajectory of the hit ball is corrected. However, according to the result of the experiment, the weight of one counter balance member 1 is generally preferably about 20 to 100 grams, and more preferably about 40 to 80 grams. Therefore, generally speaking, the diameter or major axis of the cross section of the weight portion 13 having a cylindrical shape, a hexagonal prism shape, an octagonal prism shape or the like is preferably about 1.5 to 3.5 cm, and 2.0 to More preferably, it is about 3.0 cm. The area of the cross section of the weight portion 13, generally speaking, is preferably from about ² 1.6～9.6Cm, more preferably in the range of about ² 3.0～7.0Cm. Further, the length of the weight portion 13 in the axial direction is
Generally speaking, it is preferably about 2 mm or more,
The thickness is more preferably about 4 mm or more, and is preferably about 30 mm or less, more preferably about 15 mm or less in consideration of difficulty in use during swinging.

The inner end surface of the block member 11 (screw member 1
(The surface from which the tip end side of the screw shaft portion 10a of 0 protrudes)
Is preferably formed in a substantially concave spherical shape corresponding to the shape of the grip end surface 5a of the grip member 5. With this configuration, when the counter balance member 1 is attached to the grip end surface 5a, the block member 11 can be brought into close contact with the grip end surface 5a. Further, it is preferable that the outer end surface of the block member 11 has a substantially convex spherical shape similar to the shape of the grip end surface 5a of the grip member 5.

If necessary, the counterbalance member 1 may be provided with an air vent hole 14 having a diameter of about 1 to 4 mm, and the air vent hole 14 may be, for example, the screw member 10 and the block member 11. It may extend through each along the axis. With this configuration, when the counter balance member 1 is attached to the grip end surface 5a of the grip member 5, the air vent hole 6 provided in the grip end surface 5a communicates with the external space through the air vent hole 14. The internal space S of the club shaft 3 can be communicated with the external space.

FIG. 3 shows a state in which the counter balance member 1 shown in FIG. 1 is attached to the golf club 2 shown in FIG.

When the counterbalance member 1 according to the present invention is used, it is preferable that a counterbalance member unit composed of at least three kinds of counterbalance members 1 is prepared in advance for at least trial hitting, for example, this unit. Has a weight of 40g, 50g, 60g, 7
It may consist of five counterbalance members 1 of 0 g and 80 g. Therefore, a golf player who intends to use the counter balance member 1 according to the present invention,
Of the five types of counter balance members 1, the counter balance member 1 that seems to pass through may be selected and attached to the golf club 2 of the player. At the time of this mounting, by screwing the protruding mounting portion 12 of the counter balance member 1 into the air vent hole 6 of the grip end surface 5a of the grip member 5, it is possible to easily mount by a self-tapping method. On the contrary, the projection-shaped mounting portion 12 can be easily removed by unscrewing it from the air vent hole 6. Grip end surface 5a
There is also a grip member 5 in which the air vent hole 6 is not provided, but even in this case, since the projecting mounting portion 12 is threaded, it is possible to screw the projecting mounting portion 12 into the grip end surface 5a. Is.

The golf player can try a golf ball using the golf club 2 with the counter balance member 1 attached to the grip end surface 5a in this manner. Then, this trial shot can be easily replaced with another counter balance member 1 having a different weight, and can be performed for the counter balance members 1 having various weights. Therefore, the golf player has passed the counter balance member 1 through many types of counter balance members 1 (if this is a counter balance member unit for trial striking, a counter balance member of about the same weight purchased separately). If the selected counter balance member 1 is fixed to the grip member 5 with an adhesive or the like, the golf club 2 having a weight balance suitable for oneself can be used in golf play or the like. it can. At the time of this fixing, an adhesive may be applied to each of the grip end surface 5a (the outer end surface of the grip member 5) and the inner end surface of the block member 11, and then these surfaces may be joined to each other. An adhesive can be applied to the inner peripheral surface of 6 and the outer peripheral surface of the protruding mounting portion 12, respectively. The golf player can similarly perform the trial hitting and the fixing of the counterbalance member 1 as described above with respect to all other golf clubs that he owns.

As shown in FIG. 3, in the case of the golf club 2 in which the counter balance member 1 is attached to the grip end surface 5a, as compared with the conventional golf club in which the lead thin plate is directly wound around the grip portion of the club shaft, The counter balance member 1 projects outward from the grip end surface 5a. Therefore, when the grip member 5 of the golf club 2 shown in FIG. 3 is gripped with a hand and a swing is performed, the counter balance member 1 is located on the opposite side of the club head 4 around the grip portion of the hand, which is a point of action of force. positioned. Therefore, the counter balance member 1 can function very effectively as a counter balance.

For example, when the counter bunlas member 1 having a weight of 50 grams is attached to the grip end surface 5a of the golf club 2 as shown in FIG. 3, the original swing-eight display is D ₀ , and the driver's swing weight display is D _0. Is D ₅
It changed to about the same value as a lightweight club.

In the above-described embodiment, the threaded portion is formed on the protruding mounting portion 12 of the counterbalance member 1. However, a ring-shaped ridge and / or groove, such as a ring-shaped ridge or groove of a gas pipe connection port provided in the gas appliance for connecting the gas pipe to the gas appliance, is attached to the threaded portion. Alternatively, one or more may be formed on the outer periphery of the protruding attachment portion 12. Further, if the projection-shaped mounting portion 12 is prevented from easily falling out from the air vent hole 6 provided in the grip end surface 5a of the grip member 5,
It is not always necessary to provide the above-mentioned threaded portion, convex ridge portion, and concave ridge portion.

Further, in the above-mentioned embodiment, the counter balance member 1 comprising the protruding mounting portion 12 and the weight portion 13 is constituted by the screw member 10 and the block member 11. However, the counter balance member 1
It may be integrally formed from a single material, or a lead ball or the like may be embedded in the counter balance member 1 integrally formed from a single material.

[0027]

According to the present invention, by inserting the protruding mounting portion of the counter balance member for a golf club into the grip end surface of the grip portion of the golf club, the counter balance member can be attached to and detached from the grip end surface. Therefore, the golf player attaches a plurality of types of counterbalance members to the grip end surface in a detachable manner and sequentially makes a trial shot, so that the golf player having the weight suitable for himself or herself can be selected from the plurality of types of counterbalance members. By selecting and attaching the selected counter balance member to the grip end surface, a golf club having a weight balance suitable for oneself can be easily obtained. Therefore, since it is easy to modify the golf club, it is possible to reduce the need to buy a new golf club, and further, it is possible to modify one golf club for various different purposes.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a counter balance member for a golf club according to an embodiment of the present invention.

FIG. 2 is a vertical sectional view in which an intermediate portion of a golf club to which the counter balance member shown in FIG. 1 is attached is omitted.

3 is a vertical cross-sectional view of a grip portion showing a state where the counter balance member shown in FIG. 1 is attached to the golf club shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Counterbalance member for golf club 2 Golf club 5 Grip member 5a Grip end surface 10 Screw member 11 Block member 12 Protruding attachment part 13 Weight part S Internal space

Claims (10)

[Claims] 1. A weight portion for adding weight to a grip end surface of a grip portion of a golf club, and a weight portion projecting from the weight portion and inserted into the grip end surface so as to be attachable to and detachable from the grip end surface. A counterbalance member for a golf club, comprising: a protrusion-shaped mounting portion to be mounted. 2. The member according to claim 1, wherein the protrusion-shaped mounting portion is configured to be inserted into an air vent hole provided in the grip end surface. 3. The member according to claim 1, wherein a threaded portion to be inserted into the grip end surface by screwing is formed on the protruding mounting portion. 4. An air vent hole for communicating an air vent hole provided in the grip end surface with an external space when the projecting attachment portion is attached to the grip end surface. The member according to any one of claims 1 to 3. 5. A weight of 20 to 100 grams, more preferably 40 to 80 grams.
The member according to any one of to 4. 6. A screw member having a threaded screw shaft portion and a screw head portion, respectively, and a block member in which a screw head portion of the screw member and a base end side portion of the screw shaft portion are embedded. The projecting attachment portion is formed by the tip end side portion of the screw shaft portion projecting from the block member, and the block member and the screw head and the screw shaft portion embedded in the block member. The member according to any one of claims 1 to 5, wherein the weight portion is constituted by an end side portion. 7. A golf club counterbalance member according to claim 1, wherein the counterbalance members have a plurality of types, and the plurality of types of counterbalance members have different weights. Counter balance member unit for golf clubs. 8. A golf club counterbalance member according to any one of claims 1 to 6 comprising at least three types of counterbalance members, and these at least three types of counterbalance members having a low weight to a weight. The unit of the counter balance member for a golf club, wherein each weight is increased by approximately equal weight in the order of the largest. 9. The counterbalance member according to claim 1, wherein the protruding mounting portion is mounted on the grip end surface by being inserted into the grip end surface. A grip member for a golf club, which is characterized in that 10. The counterbalance member according to claim 1, wherein the protruding mounting portion is mounted on the grip end surface by being inserted into the grip end surface. A golf club characterized by being present.