JPH0919518A - Eccentric core shaft racket - Google Patents

Abstract

PROBLEM TO BE SOLVED: To widen a sweet spot and to receive and return a ball according to the will of a player by forming the eccentric core shaft connected to a frame outside the extension line of the left and right center line of the gut surface of a racket. SOLUTION: In sports using a ball or shuttlecock to mutually hit the same by a racket 1 having a gut surface (net surface) 2 the eccentric core shaft 6 connected to a frame 3 is formed on the eccentric core axial line 5 outside the extension line of the left and right center line 4 of the gut surface 2. By this constitution, the ball can be received and returned according to the will of a player and the gut surface of the racket can be used over a wide region. Further, this racket can correspond to the power of the ball of a partner and becomes easy to sweep by moment effect and further becomes easy to generate a curved ball such as topspin. There is the same effect in backhand or double- hand and the wrist, an elbow or the shoulder is not damaged regardless of a hard or soft ball.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to sports equipment using a racket such as tennis or badminton, which is provided with an eccentric shaft shaft connected to a frame outside the extension line of the center line of the gut surface.

[0002]

2. Description of the Related Art A conventional racket for tennis or badminton has a shaft connected from a frame on an extension of the left and right centerlines of a gut surface, so that a sweet spot 8 becomes narrow and a ball is placed on a surface other than this place. Or, when the shuttle hits, it is pushed by the opponent's ball and the racket rotates about the left-right center line of the gut surface. This indicates that the return hit ball does not go in the direction the player thought
Halves the appeal of the game. At that time, since the grip 7 force tries to suppress the rotation forcibly, the wrist is injured and the fatigue of the whole body is accumulated.

[0003]

According to the present invention, since the conventional racket has the above-mentioned drawbacks, the shaft 6 connected to the frame 3 is provided outside the extension line of the lateral center line 4 of the gut surface. As a result, even if a ball or shuttle is received on a surface other than the sweet spot 8, a large rotation distance 9 is instantly generated, which becomes a frictional resistance and a grip force is increased. Therefore, the sweet spot is widened and the player can hit back and return the ball according to his will. The present invention aims to provide a sports equipment to solve these problems.

[0004]

SUMMARY OF THE INVENTION The present invention provides means for providing an eccentric shaft shaft 6 connected to a frame outside the extension line of the center line of the racket gut surface.

[0005]

The present invention has taken the above-mentioned means. Therefore, in tennis or sports using a racket such as badminton, even if the ball or the shuttle hits the surface other than the sweet spot, a large turning distance is instantaneously generated. However, this becomes frictional resistance and the grip force increases. Therefore, the sweet spot is widened and the player can hit back and return the ball according to his will. When swinging, the weight balance creates a stable moment due to the eccentric shaft.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the embodiment of the tennis racket shown in FIG. 1, an eccentric shaft shaft connected to the frame is provided outside the extension line of the left and right center lines of the gut surface held by the substantially circular frame.

Regarding the use at the time of the game, in a movement that does not change at all without any special training,
Immediately draw out the characteristics of the eccentric shaft shaft that the racket has,
You can adapt.

[0008]

As described above, according to the present invention, in a sport in which a ball or a shuttle is used to hit a racket having a gut surface, an eccentricity which is connected to the frame outside the extension line of the left and right center lines of the gut surface. Since it has an axial shaft, 1. You can strike back as the player wishes. 2. A wide area of the racket surface can be used. 3. It can correspond to the opponent's power. 4. Easy to swing out due to the moment effect. 5. Easy to hang curved balls such as top spins. 6. The same effect is applied to backhand and double hand. 7. It does not matter whether it is a hard ball or a soft ball. 8. Do not hurt your wrists, elbows or shoulders. 9. Discover and develop personal qualities.

[Brief description of the drawings]

FIG. 1 is a front view and a side view of an embodiment of the present invention.

FIG. 2 is a side view of another embodiment based on the claims of the present invention.

FIG. 3 is a comparative view of a front view and a bottom plan view of an embodiment of the present invention, and a front view and a bottom plan view of a conventional product.

[Explanation of symbols]

 1 ... Racket 2 ... Gut surface 3 ... Frame 4 ... Left and right center line of gut surface 5 ... Eccentric axis line 6 ... Shaft 7 ... Grip 8 ... Sweet spot 9 ... Rotation (distance) radius

Claims (1)

[Claims] 1. In a sport in which a racket 1 having a gut surface (mesh surface) 2 is used for striking using a ball or a shuttle (a ball with blades), an outer side of an extension line (eccentric axis 5) of a left-right center line 4 of the gut surface. ) A sports equipment comprising an eccentric shaft shaft 6 connected to the frame 3.