JP3233952U - Tip type damper for racket. - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a chip type damper for a racket capable of sufficiently reducing unpleasant sounds and vibrations due to high frequency vibration of a string generated at the time of hitting a ball. SOLUTION: Two or more straight lines and curves penetrating from the central portion to the outer peripheral portion and from the front surface to the back side of a resin vibration absorber serving as a chip-type vibration stopper such as silicon rubber for the purpose of sound reduction and vibration reduction. By arranging L-shaped grooves 3 by cutting or molding, it is possible to reduce the sound and vibration generated when hitting a ball, and the tip portion is open to the outer peripheral portion. It consists of a pendulum part 2. Further, a vertical groove 5 for fitting the string is provided on the outer peripheral surface of the support portion. The pendulum portion may be provided with protrusions in the front and back directions in order to enhance the damping effect of sound and vibration. Further, by changing the combination of the size and shape of the support portion and the pendulum portion formed by the two or more grooves, the amount of damping of the sound and vibration generated at the time of hitting the ball can be changed. [Selection diagram] Fig. 2

Description

The present invention relates to a vibration stopper used by being attached to a string of a racket.

Conventional chip-type vibration stoppers for rackets (Fig. 1) include, for example, a support such as a circle, a square, a triangle, or a trapezoid whose size is adjusted to the spacing of strings made of rubber typified by silicon rubber or plastics. Those that use only the softness of the material by arranging a groove that can be attached to the string on the outer peripheral surface, those that make the central part hollow and easy to crush, those that have a small mushroom-shaped vibrating body contained in the cavity Was the mainstream.

Japanese Patent Application Laid-Open No. 10-211303

Conventional round, square, triangular, trapezoidal, or other simple-shaped chip-type vibration stoppers, those with a hollow center, or those with a mushroom-shaped vibrating body contained in the hollow, have a string that is generated when the ball is hit. The unpleasant noise and vibration caused by high-frequency vibration could not be sufficiently reduced.

In the present invention, from the central portion to the outer peripheral portion and from the front surface to the back side of a resin vibration absorber (1: support in FIG. 2) which is a chip-type vibration stopper such as silicon rubber for the purpose of sound reduction and vibration reduction. It is composed of a pendulum portion (2 in FIG. 2) having a shape in which the tip portion formed by arranging two or more straight, curved, L-shaped or other grooves penetrating through by cutting or molding is open to the outer peripheral portion. Will be done. Further, a groove (5 in FIG. 2) for fitting the string is provided on the outer peripheral surface of the support portion.
Further, by providing protrusions on the pendulum portion in the front and back directions (FIG. 3 (a)), the damping effect of sound and vibration is enhanced.

As described above, in the present invention, the vibration absorber made of chip-shaped resin such as silicon rubber is released to the outer periphery formed by providing two or more grooves penetrating from the central portion to the outer peripheral portion and from the front surface to the back surface. If the large pendulum part reduces the sound and vibration when hitting the ball, and if the base part of the released pendulum part is formed thinner to make it easier to move, it will vibrate freely in all directions, and its inertia will be more effective. It is possible to eliminate unnecessary sounds and vibrations when hitting a string or frame (Fig. 3 (b)).
In addition, the amount of vibration damping can be changed by changing the combination of the size and shape of the support portion and the pendulum portion formed by the plurality of grooves, and it is possible to configure a diverse lineup that suits the user's preference. ..

Conventional tip type vibration stop An example in which a penetrating L-shaped groove is formed in a triangular support. 1 ... Support, 2 ... Pendulum part, 3 ... Penetrating L-shaped groove, 4 ... Pendulum base part, 5 ... String mounting groove A perspective view (a) and a cross-sectional view (b) when the pendulum portion has a protrusion. When the through groove shape is curved (a: triangular type, b: round type, c: square type). When the through groove shape is L-shaped (a: triangular type, b: round type, c: square type). When the through groove shape is straight (a: triangular type, b: round type, c: square type).

1: Vibration absorber (support) such as silicon rubber.
2: Pendulum part.
3: Through groove part.
4: The base of the pendulum.
5: Groove for mounting strings.
6: Protrusion

Claims (2)

In a resin vibration absorber that is mounted between the strings of a racket and is intended to reduce sound and vibration when hitting a ball, it has two or more grooves that penetrate from the center to the outer circumference of the vibration absorber and from the front surface to the back surface. A tip-type damper for a racket having a pendulum portion whose tip portion formed thereby is open to the outer peripheral portion of the vibrating body. Chip type damper for racket having a protrusion on the pendulum portion of claim 1.

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