JPH073671U - Racket grip structure - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a grip structure that has a good vibration reduction effect and is easy to assemble. [Structure] The grip structure includes a head 40 and a grip 1.
0 and a connecting portion 20 connecting the head 40 and the grip 10 with each other. Grip 10
Is integrally press-molded with a thermoplastic resin material, and the grip 10 has a pipe-shaped main body 11 having both ends opened, and the inside of the main body 11 has an open upper end. And a hollow cylindrical nesting part 1 with the lower end closed.
3 is provided. A ring-shaped fixing portion 12 extending inward is integrally formed on the inner circumference of the upper end opening side of the main body portion 11. The fixing portion 12 includes an inner circumference of the opening of the main body portion 11 and an outer circumference of the opening of the nesting portion 13. Is connected to. A ring-shaped spacer 30 made of an elastic body is interposed between the inner peripheral surface on the lower end side of the main body 11 and the outer peripheral surface of the insert section 13. The connecting portion 20 is inserted and fitted on the inner peripheral side of the nesting portion 13.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a racket grip structure, and more particularly to a grip structure that reduces vibrations transmitted to the grip.

[0002]

[Prior art]

 The racket grip structure is generally made of foamed plastic and integrally molded into a predetermined shape. In such a structure, the vibration when hitting a ball is transmitted from the head to the grip as it is and the vibration is generated. There is very little reduction or mitigation effect, and it can hardly be obtained. For such a problem, a racket having a structure that reduces the vibration transmitted to the grip is also provided, but it has a drawback that the structure becomes considerably complicated.

Therefore, for example, as shown in FIG. 3, there is known a racket grip structure which has a relatively simple structure and can obtain a vibration reducing effect. In the grip structure 50 shown in the figure, a plurality of spring rings 51 are interposed between a racket connecting portion 60 and a hollow cylindrical grip body 52. According to such a grip structure 50, the vibration transmitted from the head to the grip body 52 is absorbed and mitigated by the spring ring 51, but there are also technical problems described below.

[0004]

[Problems to be solved by the device]

 That is, the grip structure 50 shown in FIG. 3 has a structure in which a plurality of spring rings 51 are provided on the inner peripheral side of the grip body 52 at intervals along the longitudinal axis direction of the grip body 52, which makes assembly very difficult. There was a problem. The present invention has been made in view of the above conventional problems, and an object thereof is to provide a racket grip structure that has a good vibration reduction effect and is simple in structure and assembly. To do. Another object of the present invention is to provide a grip structure that can be firmly fixed to the connecting portion of the racket.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention provides a racket including a head having a ball hitting surface, a grip serving as a gripping portion of a user, and a connecting portion connecting the head and the grip. The grip is integrally molded of a thermoplastic material, and has a pipe-shaped main body portion having an open upper end, a hollow cylindrical nesting portion having an open upper end, and the main body portion. A ring-shaped fixing portion that connects the inner circumference of the opening of the main body and the outer circumference of the opening of the nest, and an elastic member interposed between the inner peripheral surface of the lower end of the main body and the outer peripheral surface of the nest. A ring-shaped spacer made of a body, and the connecting portion is fitted to the inner peripheral side of the nesting portion.

A female screw is engraved on the inner peripheral surface of the lower end opening of the main body, and the opening can be closed by a cap screwed with the female screw. An appropriate amount of liquid can be injected between the main body portion and the insert portion.

[0007]

[Action]

 In the grip structure having the above structure, the grip is integrally molded of a thermoplastic material, and has a pipe-shaped main body with an open upper end and a hollow cylinder with an open upper end. -Shaped nest part, a ring-shaped fixing part that connects the inner circumference of the opening of the main body part and the outer circumference of the opening of the nest part, the inner peripheral surface of the lower end side of the main body part, and the outer peripheral surface of the nest part. Since there is a ring-shaped spacer made of an elastic body interposed between the racket and the connection part of the racket is fitted on the inner peripheral side of the nest part, when the hitting ball is hit by the head of the racket, The vibration is transmitted to the connecting portion, the nesting portion, and the main body portion, but when transmitted from the nesting portion to the main body portion, it is absorbed and relaxed by the spacer of the elastic body.

[0008]

【Example】

 Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. 1 and 2 show an embodiment of a racket grip structure according to the present invention. FIG. 1 is a sectional view of an essential part of the grip structure, and FIG. 2 is an exploded perspective view of an essential part of the grip structure. The grip structure shown in these drawings has a head 40 having a ball striking surface and a grip 10, which is a gripping portion for a user, the head 40 and the head 40 and the grip 10. The case where the present invention is applied to a racket provided with a connecting portion 20 for connecting between the two is shown.

The grip 10 is integrally press-molded with a thermoplastic resin material, and the grip 10 has a pipe-shaped main body 11 having both ends opened, and the inside of the main body 11 is formed. A hollow cylindrical nesting portion 13 having an open upper end and a closed lower end is provided. A ring-shaped fixing portion 12 extending inward is integrally formed on the inner periphery of the upper end opening side of the main body portion 11. The fixing portion 12 is formed on the inner periphery of the opening of the main body portion 11 and the nesting portion 13. It connects to the outer circumference of the opening. A ring-shaped spacer 30 made of an elastic body is interposed between the inner peripheral surface of the lower end side of the main body 11 and the outer peripheral surface of the nesting portion 13.

A female screw 14 is engraved on the inner peripheral surface of the lower end opening of the main body 11, and the opening is closed by a cap 15 provided with a male screw to be screwed with the female screw 14. A one-sided concave groove 151 is formed on the bottom surface side of the cap 15, and this concave groove 151 is used when the cap 15 is rotated and attached / detached. The connecting portion 20 is insert-fitted or insert-bonded to the inner peripheral side of the insert portion 13. In the racket constructed as described above, when the user holds the grip 10 and hits the ball with the head 40, when the ball hits the head 40, a force is applied by the principle of leverage. That is, when the ball hits the head 40, the head 40 serves as a force point, and the connecting point between the lower end side of the nesting portion 13 and the spacer 30 serves as a drag point with the fixed portion 12 as a fulcrum.

Therefore, the force received by the spacer 30 and the impact force received by the head 40 conflict with each other, and further, in the connecting portion 20, the portion extending toward the nesting portion 13 side is completely surrounded by the nesting portion 13. Therefore, almost all of the force transmitted from the head 40 to the connecting portion 20 is transmitted to the nesting portion 13. Most of the nesting portion 13 is floating in the air in the grip 10. Therefore, almost all the force and the vibration force from the head 40 received by the nesting portion 13 are applied to the spacer 30 which is an elastic body. .

Therefore, the force and the vibration force from the head 40 are transmitted to the main body portion 11 via the spacer 30, and the elastic force and the vibration absorbing ability of the spacer 30 are effectively exhibited, and the head 40 The force and vibration force received by the racket can be sufficiently eliminated, and the change in the angle between the connecting portion 20 and the grip 10 becomes large, so that the controllability of the racket is not reduced.

Further, in the present invention, an appropriate amount of liquid can be injected between the main body portion 11 and the nest portion 13, and when the liquid is injected in this way, the nest portion 13 moves to the main body portion 11. The transmitted vibration can be more effectively absorbed by the fluid. Further, since the spacer 30 of the present embodiment is provided on the lower end side of the main body portion 11, it can be easily assembled, and can be easily attached / detached by removing the cap 15. It can be easily replaced when the elastic force becomes poor.

Further, since the connecting portion 20 fitted in the nesting portion 13 is in contact with the nesting portion 13 on the entire circumferential surface in the longitudinal direction, both can be firmly fixed. Furthermore, the grip 10 of the present embodiment can be integrally press-molded at the same time including the nesting portion 13 when manufacturing, and it is not necessary to form a concave groove in the grip 10 and the die-cutting can be performed. It is easy to use and the structure is simple, so it takes only a short time to assemble.

It should be noted that, in the above description, only comparatively good embodiments have been described, but design changes within the scope not departing from the gist of the present invention are included in the present invention.

[0016]

[Effects of the Invention] As described in detail in the above, according to the grip structure of the racket according to the present invention, it is possible to obtain a racket having a good vibration reducing effect and having a simple structure and assembly. .

[Brief description of drawings]

FIG. 1 is a sectional view of an essential part showing an embodiment of a racket grip structure according to the present invention.

FIG. 2 is an exploded perspective view of a main part of the grip structure of FIG.

FIG. 3 is a cross-sectional view of essential parts showing an example of a conventional racket grip structure.

[Explanation of symbols]

 10 Grip 11 Main Body 12 Fixed Part 13 Nesting Part 14 Female Screw 15 Cap 151 Concave Groove 20 Connection Part 30 Spacer 40 Head

Claims (3)

[Scope of utility model registration request] 1. A racket comprising a head having a ball hitting surface, a grip serving as a gripping portion for a user, and a connecting portion connecting between the head and the grip, wherein the grip is made of heat. A body integrally formed of a plastic material, having a pipe-shaped main body having an open upper end, a hollow cylindrical nesting portion provided in the main body and having an open upper end, and an inner circumference of the opening of the main body. A ring-shaped fixing portion that connects between the outer periphery of the opening of the nest portion and an elastic body interposed between the inner peripheral surface of the lower end of the main body portion and the outer peripheral surface of the nest portion. And a grip structure for a racket, wherein the connecting portion is fitted to the inner peripheral side of the nesting portion. 2. The main body part is formed with an internal thread on the inner peripheral surface of the lower end opening part, and the opening part is closed by a cap screwed with the internal thread part. Racket grip structure. 3. The racket grip structure according to claim 1, wherein an appropriate amount of liquid is injected between the main body portion and the nest portion.