JPH03251268A - Moving weight of ball hitting implement - Google Patents

Abstract

PURPOSE:To increase the flying distance and the flying speed by providing a cylindrical structure on a ball hitting implement, and providing a weight being movable in the axial direction in the cylindrical structure. CONSTITUTION:In a cylindrical body 1, a weight 3 is contained in its inside so as to be movable in the axial direction, and a cap 2 is provided on one end part of the cylindrical body 1. It is desirable that the weight 3 is formed by lead and other metal whose specific gravity is large. In a head 4, a cylindrical hole 4b is pierced from the opposite side of a face member 4a, and for instance, the cylindrical body 1 is fixed to the hole 4b by an adhesive agent. In the end of a take-back operation, the weight 3 moves in the direction of the cap 2, comes into collision with the bottom part of the cylindrical body 1 in a moment of impact, and its collision is utilized as energy of a hit ball. In a wood club of golf, the face member 4a and a sole plate 4c are installed, and the moving weight can be formed integrally with those members. Also, although there are plural pieces, they are provided together in the arrangement and orientation desired by the weight, suite spot becomes large, or the balance between the moving weights can be taken.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention generally relates to a movable weight for a ball hitting tool, and more particularly to a movable weight suitable for equipping a golf club.

Problems with the Prior Art In general, in sports where flight distance and flight speed are important factors, the factors that increase flight distance and flight speed are the weight of the ball hitting equipment and the speed of the swing.

Furthermore, depending on the type of sport, accuracy in the direction of the ball is required. The increase in flight distance and flight speed, as well as the stability of the direction of the ball being hit, are greatly influenced by the timing and stability of the player's swing.

The overall weight and balance of the ball hitting equipment is important to enable the player to make an optimal swing. Even if only a portion of the ball-striking tool is made heavier while ignoring balance, it becomes difficult to accurately control the ball-striking tool during the swing, and good results may not be obtained. Furthermore, preferences regarding the weight and balance of ball hitting equipment vary depending on the player.

For this reason, conventional ball hitting tools are generally equipped with weights for balance. for example,
When increasing the weight of a golf wood, increasing the weight of only the head will cause the club to become unbalanced.
This makes it impossible to swing accurately or disrupts the timing of the swing, resulting in undesirable results. Therefore, the weight of the shaft must be increased to maintain balance. However, there is a limit to the weight of a club that allows a player to swing faster and more accurately.

Means for Solving the Problems According to the present invention, a ball hitting tool is provided with a cylindrical structure, and a weight that is movable in the axial direction within the cylindrical structure is provided. The cylindrical structure may be formed on the ball hitting tool itself, or the cylindrical body may be fixed to the ball hitting tool. By providing means for adjusting the orientation of the cylindrical structure, it can be adjusted to suit each player.

Function: Changes in balance due to the movement of the movable weight and impact at impact can be used as hitting energy without changing the total weight of the ball hitting equipment.

For example, when placed within the shaft of a golf club, along the length of a baseball bat, or along the seven-ream length of a tennis racket, the movement of the weight downswing,
The forward swing becomes top-heavy, and the swing of the batting equipment improves, which increases the flight speed of the batted ball.

Flying distance increases.

Additionally, when placed in the head of a golf wood club in a direction perpendicular to the face, the moving weight moves at the moment of impact and collides with the end wall of the cylindrical structure, increasing the impact energy at impact. . Compared to a ball hitting tool of the same weight and balance, the flight distance can be increased by an amount equivalent to the impact energy of the moving weight. By changing the orientation of the cylindrical structure, it is also possible to correct the player's swinging habits. Thus, by changing the weight of the weight and the orientation of the cylindrical structure, it is possible to provide a ball hitting tool that matches the physical strength and swing of the player. The collision sound produced when the weight collides with the rear wall of the cylindrical structure during the tick-back motion contributes to adjusting the timing sense of the swing. If the weight is heavy, it may give an impact to the ball hitting tool at the end of the tickback motion, causing the ball to become unbalanced.

In such a case, at least one of the weights may be provided with a shock absorbing means to buffer the shock during tickback. It is also possible to fix the impact buffering means and the weight and adjust the movement of the weight. By fixing a movable weight or a weight in a cylindrical structure to the ball hitting tool in a replaceable manner, the balance can be adjusted.

In addition, by housing a moving weight in which the weight is housed in a cylindrical body in another case and making it possible to change the direction of the cylindrical body, it is possible to adjust the orientation of the cylindrical body with respect to a single ball-hitting tool. becomes possible.

Embodiment FIG. 1 is a sectional view of a moving weight according to an embodiment of the present invention. The cylindrical body 1 may have any shape as long as it can accommodate the weight 3 in an axially movable manner, but in the illustrated embodiment, it has a cylindrical structure. The cylindrical body may be made of any material. In extreme cases, it may be a cylindrical hole formed in the ball hitting tool itself.

In order to maximize the weight size, it is desirable to make the weight of the cylindrical body as light as possible.

A cap 2 is provided on at least one end of the cylindrical body 1,
In this embodiment, the cap 2 is shown as a screw-in type cap that is screwed into the opening of the cylindrical body. Although the cap 2 does not necessarily have to be of a screw-in type, it is preferable that the cap 2 has a structure that does not easily come out due to the force acting in the axial direction of the cylindrical body. Otherwise, there is a risk that the cap will come off during the swing and the weights will fly out.

It is preferable that the weight 3 is made of lead or other metal with a high specific gravity. Various measures can be taken to make the weight move smoothly inside the cylindrical body. In this embodiment, the weight has a cylindrical shape, and its axial dimension is larger than the radius of the cross section (a little less than twice). If the weight is made of a material with relatively low hardness, it may be coated with a suitable material to prevent wear. For example, the weights can be enclosed or held within a lubricated plastic coating or a hard metal cylinder. Of course, the weight 3 may be spherical.

FIG. 2 is a sectional view of the head 4 of the golf tongue/throat club, showing a state in which the movable weight according to the embodiment of FIG. 1 is attached to the head 4. A cylindrical hole 4b is bored in the head 4 from the opposite side of the face member 4a, and a cylindrical body 1 is fixed therein. In this embodiment, the cylindrical body 1 is fixed in the hole 4b with adhesive. The method of fixing the cylindrical body l to the head (-ball hitting tool for boat fishing) is not limited to adhesive bonding.In order to facilitate replacement, a male thread is formed on the outer surface of the cylindrical body l, and the club You can also screw it into the head. In any case, it is necessary to take care to prevent the cylindrical body 1 from escaping from the club head 4 during the swing. As is clear, at the end of the tickback motion, the weight 3 moves toward the cap 2 and collides with the bottom of the cylindrical body 1 at the moment of impact, and the impact is used as energy for the ball.

Generally, a golf wood club is equipped with a chair member 4a and a soul play member 4c, and the movable weight of the present invention can be formed integrally with these members.

In the above embodiment, the head 4 is provided with a single moving weight, but it is also possible to provide a plurality of moving weights in a desired arrangement and orientation. This makes it possible to enlarge the sweet spot or even balance the moving weights here.

FIG. 3 is a cross-sectional view of another embodiment of the invention.

In this embodiment, a coil spring 5 is arranged between the weight 3 and the cap 2.

At the end of the tick-back motion, it is possible to prevent the weight 3 from colliding with the cap 2 and giving an impact, thereby preventing the swing from going out of order. In addition, in this example,
One end of the coil spring 5 may be fixed to the cap 2, and the other end of the coil spring 5 may be fixed to one end of the weight 3. By appropriately selecting the length and spring resistance of the coil spring 5 and the weight of the weight 3, the movement of the weight 3 during the swinging motion can be controlled. Further, by providing coil springs on both sides of the weight 3 and appropriately selecting the spring resistance and weight of the weight, the movement of the weight 3 during the swinging motion can be controlled. Alternatively, in order to smooth or control the movement of the weight 3 within the cylindrical body 1, it is also possible to seal a liquid of an appropriate viscosity within the cylindrical body.

FIG. 4 shows a modification of the present invention, and FIG. 4a shows a modification of the present invention.
A sectional view of the moving weight, FIG. 4 shows a right side view with the cap 23 removed. In this example, the moving weight lO is shown as being located within the reorienting means 20.

The moving way 1-10 includes a cylindrical body 11, caps 12a and 12b that seal the openings at both ends of the cylindrical body 11, and a cylindrical body Il.
It is shown as consisting of a spherical weight 13 enclosed within. The outer ends of the caps 12a, 2b are hemispherical.

The orientation change means 20 is shown as having a cylindrical outer tube 21 open at one end, a cap 12, and a pair of disc-shaped support members 23,24.

A plurality of protrusions 2 are provided on the inner surface of the cylindrical outer cylinder 21 in the generatrix direction.
1a (three protrusions in the illustrated embodiment) are arranged at equal angles with respect to the central axis. A pair of disc-shaped supports 23.
Complementary recesses 23a and 24a corresponding to the number and arrangement of the protrusions 21a of the outer cylinder 21 are formed in the circumferential portion of the outer cylinder 24,
As a result, the disc-shaped support 23,24 can be slidably inserted into the sleeve 21 in the axial direction, but cannot rotate about the central axis within the sleeve. Their disk-shaped supports 23゜2
4 has at least one spherical recess 23b on one side,
24b is formed at a position eccentric from the center of these discs. As is clear, the disk-shaped support 23.
The eccentric positions of the recesses 23b and 24b of 24 are inserted into the outer cylinder 21 in a desired orientation, the movable weight IO is sandwiched between them, and the cap 22 is tightened and fixed. The thus completed assembly is attached to a ball hitting tool. When each disc-shaped support 23, 24 is provided with a plurality of recesses at different distances from the center position, the moving weight can be increased by increasing the number of protrusions and corresponding recesses formed on the outer cylinder and the disc-shaped support. It is clear that the angular arrangement of can be adjusted more precisely.

Although it is impossible to provide holes with different orientations in the ball-hitting tool, by using the movable weight having the above-mentioned orientation changing means, the ball-hitting tool can be provided with a single hole for receiving the outer cylinder 20. It becomes possible to change the orientation of the moving weight to a desired direction.

Although only the case where the movable weight of the present invention is attached to a golf wood club has been described above, the present invention is not limited only to those embodiments, and the movable weight of the present invention is attached to a golf wood club. It will be easily understood that it can be attached to other parts of the golf ball, and can also be applied to ball hitting equipment for other sports.

For example, it may be placed within the shaft of a golf club, or in a baseball bat, the tubular structure may be oriented in the longitudinal direction of the bat and placed at an appropriate position. As a result, the weight moves to the tip of the bat during a downswing or seven-off swing, and the rotation of the tip of the club or bat is facilitated, allowing the club or bat to swing well, and the movement of the weight allows the ball to be hit at impact. Power increases.

In addition, in tennis rackets, a cylindrical structure is provided along the longitudinal direction of the frame (either integrally or removably), and the weight is transferred toward the top at the moment of impact, which improves the swing of the racket. , the top rotates well and the power of the ball increases.

Further, the orientation changing means is not limited to the above-mentioned embodiments, and any structure of orientation changing means known in the mechanical technology can be applied.

Effects of the Invention According to the present invention, by using a ball hitting tool with the maximum weight that a player can swing, it is possible to increase the distance and flight speed obtained with a conventional ball hitting tool, or to improve the flight distance and flight speed obtained with a conventional ball hitting tool. By using a ball hitting tool that is lighter than the ball hitting tool, it is possible to obtain the same flight distance and flight speed as the conventional ball hitting device, and the lighter weight makes it easier to control the ball hitting tool. . Moreover, by making it possible to change the moving direction of the weight after the movable weight of the present invention is attached to the ball-hitting tool, it becomes possible to make adjustments suitable for each individual player.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of a moving weight according to the present invention, FIG. 2 is a cross-sectional view of a golf wood club head equipped with the moving weight of FIG. 1, and FIG. 3 is a cross-sectional view of a moving weight according to the present invention. FIG. FIG. 4a is a sectional view of a moving weight having orientation changing means, and FIG. 4a is a right side view of the outer cylinder in FIG. 4a with the cap removed. Explanation of symbols 1: Cylindrical body, 2: Cap, 3: Weight. 4: club head, 4a: face member, 4b = hole, 4c: sole plate, IO: moving weight, ll: cylindrical body, 12a
, 12b: cap, 13: weight, 20: orientation changing means, 21: outer cylinder, 21a: protrusion, 22: key'l'-/
P, 23.24: Disc-shaped support, 23a, 24a:
Recess, 23b, 24b bispherical recess.

Claims (1)

[Scope of Claims] [1] A movable weight for a ball hitting tool, characterized in that the ball hitting tool is provided with a cylindrical structure, and a weight that is movable in the axial direction within the cylindrical structure is provided. [2] The movable weight according to claim 1, wherein at least one of the weights is provided with a shock absorbing means. [3] The moving weight according to claim 1 or 2, characterized in that the cylindrical structure is formed by a cylindrical body, and further provided with means for changing the axial direction of the cylindrical body. A moving weight for a ball hitting tool.