JPH11128413A - Ball driving tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enlarge a sweet spot surface of a ball driving tool, enhance strength and stability of the driving tool and make the driving tool compact and light in weight by providing a hollow columnar aggregate on the rear surface part of a driving surface. SOLUTION: A core part 2 of a hollow columnar aggregate 1 is formed into a hexagonal shape and a side wall constituting this hollow core part 2 is formed by using craft paper, metal such as iron, aluminum and titanium, other alloys, synthetic resins and arbitrary materials. The shape of the core 2 may be allowed to be round and a polygon such as a triangle, a quadrangle or a pentagon, in addition to a hexagon. In a hollow columnar aggregate 1 to be used, the size of a core on the other surface is made smaller than that of a core on a surface on which a ball is hit. Namely, repulsion of the ball is increased by gradually making the columnar core smaller than the surface on which the ball is hit. This ball driving tool can be applied to various kinds of objects such as a bat of baseball, a racket of table tennis, a stick of hockey and soccer shoes.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a ball hitting tool used for golf, baseball, hockey, table tennis and the like.

[0002]

2. Description of the Related Art Conventionally, ball hitting tools such as golf clubs and baseball bats have a tendency to increase the ball hitting surface and hitting portion in order to enlarge the sweet spot, thereby increasing the shaft length and the like. It is in. They emphasize the theoretical element of flying the ball far, but the longer the shaft, the longer the distance between the ball and the body, and the larger the hitting part, the greater the fluid resistance, the faster the ball There are many disadvantages, such as difficulty in swinging at speed. Therefore, if these tools are made larger, the instability will increase for Japanese who are generally shorter than Europeans and Americans. Various improvements have been made to the striking surface in order to solve these disadvantages, but each has its advantages and disadvantages.

[0003]

Accordingly, the present inventor has made various attempts to increase the sweet spot area of the ball hitting tool, increase the strength and stability of the ball hitting tool, and reduce the size and weight of the ball hitting tool. As a result of repeated studies, the present invention has been completed.

[0004]

That is, the present invention relates to a hitting tool characterized in that a hollow columnar aggregate is provided on the back surface of a hitting face. Next, the present invention will be described with reference to the drawings, but the present invention is not limited to only the following description.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a perspective view of a hollow columnar aggregate 1 used in a hitting tool of the present invention. The core portion 2 of the hollow columnar aggregate 1 in FIG. 1 has a hexagonal shape, and the portion is hollow. Any material can be used for the side wall 3 constituting the hollow core 2 of the hollow columnar aggregate 1. Examples include kraft paper, metals such as iron, aluminum and titanium, alloys composed of various metals, and soft or hard synthetic resins.

The shape of the core of the hollow columnar assembly 1 used in the ball hitting tool of the present invention is not limited to the hexagon shown in FIG. 1, but may be the circle shown in FIG. 2, the triangle or the quadrangle shown in FIG. Are preferably used. Also, as shown in FIG. 4, a hollow columnar aggregate in which these shapes are appropriately combined can be used.

[0007] As still another name, for example, a hexagonal aggregate pattern may be drawn on a transparent sheet, and the core pattern may be formed by superimposing the hexagonal aggregate pattern.

Next, a golf club wood will be described as an example of a hitting ball. FIG. 5 is a cross-sectional view as viewed from the face of the wood, and the hollow columnar aggregate 1 according to the present invention is loaded into the hollow provided in the hitting portion of the wood. FIG. 6 shows FIG.
2 is a side sectional view of FIG. FIG. 7 is a side view showing a case where the hollow columnar aggregate 1 is loaded on an iron. That is, by mounting the hollow columnar aggregate 1 in the cavity portion of the iron, the hitting tool of the present invention can be obtained.

Further, in the case of a baseball bat, for example, the hollow columnar assembly 1 is adjusted with a flexible material, and this is adjusted to FIG.
It is sufficient to load the bat in a hollow shape as shown in FIG.

In the hollow columnar aggregate 1 used in the present invention, the size of the core on the other surface is made smaller than the size of the core on the surface on which the ball hits, that is, as shown in FIG. By gradually reducing the columnar core, the repulsive force of the ball can be increased.

The hitting ball of the present invention includes a golf club,
Various things, such as a bat, a table tennis racket, a hockey stick, and a soccer shoe, are mentioned. It can also be applied to objects intended for hitting, such as a hammer.

As described in detail above, the ball striking surface of a golf driver, putter, iron, baseball bat, or the like is usually made of a hard wood or metal. Because of the short contact time of the ball, the flight distance of the ball was short unless it hit the sweet spot, that is, it was difficult to control. However, by using a flexible soft material as the material of the hollow columnar aggregate 1 of the present invention, the impact force can be momentarily stored by utilizing the recoil of the soft spring, and more delicate control is possible. Become. Further, as another symmetry, even when a hard driver, putter, iron or bat is included in the outside with a flexible soft cover or the like, the same effect can be obtained. That is, when the other end of the hollow columnar aggregate is closed, the impact force is made uniform by the sound waves generated by the impact of the striking surface reverberating. In addition, as shown in FIG. 10, by covering with a cover made of a soft material,
The contact surface with the ball becomes large, and fine control becomes possible. At this time, the effect is further enhanced by forming a plurality of grooves in the cover wall surface.

[0013]

According to the present invention, by loading the hollow columnar aggregate on the ball striking surface, the sweet spot surface is increased, the stability is enhanced, and the directionality can be improved. Further, even if a strong force is applied to the length direction of the ball striking surface, it is extremely difficult to be crushed, and the strength is increased. Further, these advantages allow the hitting ball to be made compact and lightweight. For example, in the case of a golf club, the shaft can be shortened by making the head portion, which is the hitting surface, thinner or smaller, so that the weight and size can be reduced, and the direction in which the ball flies can be improved.

[Brief description of the drawings]

FIG. 1 is a perspective view of a hollow columnar aggregate of the present invention.

FIG. 2 is a front view of the hollow columnar aggregate of the present invention.

FIG. 3 is a front view of the hollow columnar aggregate of the present invention.

FIG. 4 is a front view of the hollow columnar aggregate of the present invention.

FIG. 5 is a sectional view of a head portion of the driver.

6 is a side sectional view of a head portion of the driver shown in FIG.

FIG. 7 is a side view in which a hollow columnar aggregate is loaded on an iron.

FIG. 8 is a perspective view of a cylindrical hollow columnar aggregate.

FIG. 9 is a side view showing one embodiment of a hollow columnar aggregate.

FIG. 10 is a sectional view of a putter.

[Explanation of symbols]

 1. 1. Hollow columnar aggregate Core 3. Side wall

Claims (3)

[Claims] 1. A hitting tool characterized in that a hollow columnar aggregate is provided on the back surface of a hitting surface. 2. The hitting tool according to claim 1, wherein a soft spot covers the sweet spot portion of the hitting tool having a hollow columnar aggregate provided on the back surface of the hitting surface. 3. The hitting tool according to claim 1, which is a racket for a golf club, a bat, and table tennis.