JP2015084964A - Grip assisting device for tennis racket, table tennis racket, baseball bat, etc - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a training tool to make it easy to learn correct return of the wrist by enabling a grip part to be gripped easily, and enabling the grip part to be rotated more easily than ordinary rackets, baseball bats, etc.SOLUTION: A grip assisting device 1 includes a detachable elliptic spherical projection part 2 larger than the diameter of a grip, and a columnar cavity having substantially the same diameter and the same shape as the diameter and the shape of respective grips inside, at the rear end of grip parts of a tennis racket, a table tennis racket, a baseball bat, a golf club, etc.

Description

The present invention relates to a swing exercise tool for learning how to correctly return wrists such as tennis, table tennis and baseball.

Conventional training equipment for tennis, table tennis and baseball, golf, etc. is to attach a weight to an ordinary tennis racket, table tennis racket and baseball bat, etc. to improve the swing speed, There are practice tools that improve the swing speed by attaching a frame that is heavier than a golf club or a bowl-like frame that generates a large air resistance on the striking surface in addition to the weight as in Patent Document 1.

A baseball bat that has a stepped shape at the grip end to hold a baseball bat short or long, or absorbs the impact of the bat at the time of hitting with a grip tape is known from Patent Document 2. It has become.

However, since tennis, table tennis, baseball, golf and other training tools such as Patent Document 1 are training tools aimed at improving muscle strength and increasing swing speed, the swing speed can be improved. The practice tool of Patent Document 1 was not effective for acquiring proper wrist usage.

The bat of Patent Document 2 is intended to make it easier to grip the bat shortly or for a long time, so as to return the wrist, when swinging with a normal golf club or baseball bat, Since only the same effect can be obtained, it is difficult to experience how to correctly return the wrist, and the golf practice tool of Patent Document 2 is not effective in acquiring the correct way to return the wrist.

JP-A-2005-137396

JP2010-5135

An object of the present invention is to provide a training tool that makes it easy to learn how to return the correct wrist, such as tennis, table tennis, baseball, and golf, in view of the above-described conventional drawbacks.

In ideal swing learning such as tennis and table tennis, it is important and desirable to learn how to return the right wrist of the dominant hand who operates the racket.
Also, in learning ideal swing trajectories such as baseball and golf, it is important and desirable to learn how to return the wrist correctly.
In order to perform a proper wrist-returning action in a racket swing such as tennis or table tennis or in a bat or club swing such as baseball or golf, the wrist should be turned so that the grip part of the left hand (when right-handed) is rotated. It is considered desirable.

Therefore, the grip assisting device of the present invention is provided with an elliptical spherical protrusion larger than the grip diameter at the rear end of the grip portion of a racket, bat, golf club, etc. in normal tennis, table tennis, badminton, baseball, golf, etc. In addition to making it easier to grip the grip part, the grip part can be rotated more easily than a normal racket or baseball bat, etc., making it easy to learn how to return the correct wrist The purpose is to provide ingredients.

The present invention is a detachable grip auxiliary device 1 attached to a rear end portion of a grip portion 3 such as a tennis racket, a table tennis racket, a baseball bat, a golf club, etc., and an oval spherical protrusion portion larger than the diameter of each ordinary grip 2 and has an elliptical columnar cavity having approximately the same diameter and shape as the rear end of each grip. In addition, the grip assisting tool is made of an elastic material to facilitate gripping and rotation of the grip in combination with ease of attachment / detachment.

In tennis and table tennis, when swinging with a normal grip racket, the grip part is not easy to rotate, so it is easy to turn the wrist without turning the grip part, and the correct wrist There was a drawback that it was difficult to return.

In addition, when swinging with a normal baseball bat golf club, the left wrist (in the case of a right-handed person) that leads the swing during the swing because the grip part of the left hand (in the case of a right-handed person) has a cylindrical shape. Like the racket, the operation of returning the grip is not easy to rotate the grip portion, so that it is difficult to return the wrist while rotating the grip.

When the idea of the present invention is applied to a racket such as tennis or table tennis, the grip of the racket has a elliptical protrusion 2 that is larger than a normal grip at the rear end of the grip gripped by the little finger, ring finger, and middle finger. By attaching the assisting tool 1, it is possible to easily rotate the grip part than a normal grip by using the elliptical spherical protrusion 2 of the grip assisting tool 1 during the swing, in addition to making it easier to grip. With the elliptical spherical protrusion 2 of the grip assisting tool 1, it is possible to easily return the wrist correctly while turning the grip portion during the swing. Therefore, it is possible to learn how to return the wrist correctly by repeating swinging with a racket or the like in which the grip assisting tool 1 of the present invention is attached to a tennis racket or the like.

Since a normal grip is almost a columnar shape, it is easy to apply a vertical rotational force from the grip portion 3 to the striking portion 4 direction. Have difficulty. Since the product of the present invention attaches the grip assisting tool 1 having the elliptical spherical protrusion 2 to the rear end of a normal racket or the like, it is possible to apply a rotational force in an oblique direction in addition to a vertical rotational force. Since the swing trajectory can be changed by using the direction of the rotational force while correctly turning the wrist, the swing can be performed with an ideal swing trajectory.

In addition, when the idea of the present invention is applied to bats and golf clubs such as baseball and golf, it is desirable to return the wrist while rotating the grip part of the left hand (in the case of right hand) of the baseball bat and golf club. By attaching the grip assisting tool 1 having the protrusion portion 2 having an elliptical spherical shape larger than the normal grip to the grip portion of the left hand, it is possible to facilitate the operation of returning the wrist while rotating the grip during a swing. This makes it possible to experience the correct way of returning the wrist while turning the grip portion. Accordingly, it is possible to learn how to return the wrist correctly by repeating swinging with a bat or the like equipped with the grip assisting tool 1 of the present invention.

It is the top view which applied the grip auxiliary tool 1 of this invention to the baseball bat. It is sectional drawing which applied the grip auxiliary tool 1 of this invention to the baseball bat. It is the top view which applied the grip auxiliary tool 1 of this invention to the golf club. It is sectional drawing which applied the grip auxiliary tool 1 of this invention to the golf club. It is the top view which provided the concave groove | channel in the projection part 2 of the grip auxiliary tool 1 of this invention, and applied to the table tennis racket. It is the top view which applied the grip auxiliary tool 1 of this invention to the tennis racket. FIG. 3 is a plan view in which the shape of the protrusion portion 2 of the grip assisting tool 1 is made into an egg-shaped oval shape in a direction perpendicular to the direction from the grip portion 3 to the striking portion 4 and from the grip portion 3 to the striking portion 4. It is a top view which used the screw for fixation of elliptical spherical grip auxiliary tool 1. FIG.

(Overall configuration)
The grip assisting device 1 of the present invention has an elliptical spherical protrusion 2 larger than the grip diameter of a grip portion such as a tennis racket, a table tennis racket, a baseball bat, or a golf club, and has a diameter and a shape of each grip inside. It is mainly configured to have a cylindrical cavity having the same shape and the same shape. For example, an octagonal tennis racket with a grip rear end has an octagonal cavity, and a table tennis racket with an elliptical grip rear end has an elliptical columnar cavity. A baseball bat having a concave shape has a concave frustoconical cavity. Or, in the swing of tennis racket, table tennis racket, baseball bat, golf club, etc., as long as the grip assisting tool has a frictional force that does not shift due to the frictional force between the grip and the grip assisting tool, A cavity other than the above-mentioned shape such as a rectangle may be used.

(protrusion)
Further, the shape of the protrusion 2 of the grip assisting tool 1 has an elliptical spherical shape, a spherical shape, or an egg shape having a convex arcuate curve from the grip portion 3 toward the striking portion 4, and the grip portion 3. To the striking part 4 direction and the vertical direction, it has an arcuate elliptical sphere shape or a spherical and egg-shaped elliptical sphere shape. Further, a concave groove or a convex bump may be provided in the protrusion 2 in the vertical direction or the horizontal direction so that the grip assisting tool can be easily gripped and rotated at the same time.
Furthermore, in the protrusion part 2 of the grip assisting tool 1, in order to increase the frictional force of the surface and the surface of the inner cavity, convex grains, concave fine grooves, mesh-like irregularities, and the like may be provided.
The diameter of the largest bulge portion of the protrusion of the grip assisting device is determined within a range of 30 mm to 60 mm according to the characteristics of the sporting device and the user's preference. The length is determined within a range of 40 mm to 100 mm.

(Material)
The material configuration of the protrusion 2 of the grip assisting tool 1 may be a rubber elastic material that covers a normal grip portion. However, a resilient rubber sponge or plastic is used instead of the rubber elastic material. You may comprise with elastic materials, such as. Alternatively, a configuration in which a plastic material and a rubber material are combined, such as using a plastic material on the inside and a rubber material or a rubber sponge on the outside, may be used.

(Grip fixing)
A slit 5 is provided in the direction from the grip part 3 to the hitting part 4 of the grip assisting tool 1 and is attached to and detached from the grip part 3 such as a tennis racket and a baseball bat by utilizing the flexibility of an elastic material. And the grip part 3 such as a baseball bat may be fixed to the grip part with a screw or a band or a tape, but the material of the projection part 2 is used by using a highly flexible rubber. The fixing of the screw or the like may be omitted by fixing the grip portion using the frictional force generated by the gripping force of the person. The width of the slit 5 is determined within a range of 0.1 mm to 10 mm according to the degree of tightening when the protrusion 2 of the grip assisting tool 1 is attached to the tennis racket and the baseball bat or the degree of flexibility of the material. .

(Non-detachable grip constant)
In general, it cannot be attached to a commercially available racket, bat, or the like, but by applying the idea of the present invention, the shape of the rear end of the grip portion 3 such as a racket or a baseball bat is made the same shape as the above-mentioned grip auxiliary tool It is good as a practice tool. Further, in the golf club, the shape of the rear end portion of the rubber grip portion 3 that is inserted and fixed to the rear end portion of the shaft of the golf club, like a commercially available replaceable grip, is the same as the auxiliary grip. It is good also as a shape with.

(Configuration of striking part and grip part)
In addition to ordinary rackets, baseball bats, etc., in the practice tool having a grip portion as in Patent Document 1 and Patent Document 2 and other swing practice tools, the shape of the internal cavity portion of the auxiliary grip tool 1 projection 2 is It is possible to attach the grip assisting tool 1 and use it as a training tool in combination with other training tools by making it the same shape as the grip shape of the training tool.

  As described above, the grip assisting device 1 according to the present invention is installed on the rear end of the grip portion 3 of tennis, table tennis and baseball, golf or other racket, bat, or golf club. In the case of wrist use, baseball, golf, etc., it becomes easy to learn how to use the correct wrist for the left hand that leads the swing (in the case of right-handed).

1 Grip Auxiliary Tool 2 Projection 3 Grip 4 Strike 5 Slit

Claims (2)

A rear end portion of a grip portion 3 such as a tennis racket, a table tennis racket, a baseball bat, or a golf club has an elliptical spherical protrusion portion 2 having a convex arcuate curve larger than the grip diameter, and the protrusion portion 2 is a grip. A grip assisting tool 1 having a slit 5 in the direction from the portion 3 to the striking portion 4 and having a cylindrical cavity having the same diameter and shape as each grip. The grip according to claim 1, wherein the shape of the protrusion 2 is a spherical or egg-shaped elliptical sphere instead of an ellipsoid, and the protrusion 2 is provided with a concave groove or a convex bump in the vertical or horizontal direction. Auxiliary tool 1.

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