JP3083909U - Continuous vibration prevention tool in hitting tool - Google Patents

Abstract

(57) [Problem] In view of the fact that an impact vibration due to a hit ball propagates from a source through a hitting frame shaft section through a grip section to a human body, a vibration isolator is provided on a frame shaft that transmits the shock vibration. Attached and detached to attenuate shock vibration and prevent damage to the body due to shock vibration. SOLUTION: The ring body 1 is made of a soft material having elasticity.
Alternatively, it is a continuous vibration preventing tool for a ball hitting tool characterized in that a large number of continuous vibrators 2 are buried in one or a plurality of rows inside a wide ring body 1, and furthermore, a soft material having elasticity, Alternatively, a belt body 1 'is provided with a non-stretchable material, and a number of continuous vibrators 2 are buried inside the belt body, and a double-sided adhesive tape 3
A continuous vibration preventing device for a ball hitting tool, characterized in that:

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a continuous vibration preventing device in a hitting tool, and the hitting tool refers to a tennis racket, a soft tennis racket, a squash racket, a badminton racket, a racquetball, a golf club, a baseball bat, and any other hitting tools.

[0002]

[Prior art]

 Conventionally, in tennis rackets, impact vibrations when hitting balls propagate from the gut to the frame, and then from the grip to the wrist, elbow, and other bodies through the palms and grips, causing problems such as tenosynovitis and tennis elbow due to the impact vibrations. Have been.

Conventionally, in the case of a tennis racket, there is a vibration isolator mounted on the bottom of the grip end or inside the frame shaft to reduce impact vibration, but there is a vibration isolator detachably mounted on the outer peripheral portion of the frame shaft. Not.

[0004] In the first place, the largest vibration in the frame shaft transmitted to the body at the time of hitting the ball, the typical vibration that affects the occurrence of physical injury is a two-node bending mode of about 120 Hz, which is a fundamental mode unique to the frame shaft, and relatively relatively. The three-node bending mode with high frequency is about 330 Hz, the two-node torsion mode is about 360 Hz, the primary membrane vibration mode of strings is about 560 Hz, and there are many other vibrations up to about 2,000 Hz with high frequency. In the vibration mode, unique vibration-free “nodes” are formed on the frame shaft.

As shown in FIG. 9, the state of the node of the main vibration mode is a black-and-white boundary portion, and a portion away from the node is a portion where the amplitude of the frame shaft is increased. The “belly” of vibration, especially the fundamental vibration mode of the racket, which has a significant effect on the unpleasant feel at impact and injury to the body, is the two-section and three-section bending mode. It is considered appropriate to attach a vibration isolator to the “belly” part.

A racket face portion (B1, B2, B3, B4), a grip end upper portion (A), and a portion near the end of the frame shaft (C) shown in FIG. The center hit has a large “belly” with a large amplitude in the three-node bending mode. By attaching a vibration isolator to this part, the shot feeling at the time of the center hit can be improved. .

[0007] In addition, this part is also "belly" in a two-bar bending mode mainly generated in low-speed hits and off-center hits, so that the hit feeling can be similarly improved. Part.

[0008]

[Problems to be solved by the invention]

 Therefore, in consideration of the fact that the impact vibration due to the hit ball propagates from the source through the frame shaft to the human body through the handgrip, the vibration isolator is detachably attached to the frame shaft that propagates the impact vibration. Another object of the invention is to develop and provide an anti-vibration device that attenuates impact vibration and prevents damage to the body due to impact vibration.

[0009]

[Means for Solving the Problems]

 The idea is to provide a ring or belt made of a soft material with elasticity, to provide a series of vibrators on the inside and surface of these, and to attach them to the "belly" part of the ball hitting tool. This prevents impact vibration.

[0010]

[Embodiment of the invention]

 One embodiment of the present invention will be described with reference to FIGS. 1 and 2. A ring body (1) is provided by a soft material having elasticity, and a continuous oscillator (2) It is composed of a continuous vibration preventing device for a ball hitting tool characterized in that it is embedded.

The shape of the ring body (1) is a ring shape as shown in FIG. 1, or a rectangular frame shape as shown in FIG. 2, and the inner diameter of the ring body (1) is The racket (X) is formed to be slightly smaller than the outer diameter of the frame shaft (W), expanded from the bottom of the grip end, inserted, moved to a predetermined position, and mounted.

Another embodiment of the present invention will be described with reference to FIGS. 3 and 4. A wide ring body (1) made of a material having elasticity is provided, and inside the ring body (1), A continuous vibrator (2) is constituted by a plurality of ball vibrating prevention devices characterized by being buried in a plurality of rows.

FIG. 3 shows a baseball bat (Y) which is attached to the grip and grip portion of the baseball bat (Y) so as to extend from the bottom of the grip end. FIG. 4 shows a golf club (Z) mounted between a grip portion and a shaft.

Further, another embodiment of the present invention will be described with reference to FIGS. 5 and 6. The belt body (1 ') is provided by using a soft material having elasticity or a material having no elasticity. A large number of continuous vibrators (2) are buried or protruded outside the body (1 '), and a double-sided adhesive tape (3) is provided on one of the front and back surfaces. It is composed of a continuous vibration preventing tool of a hitting tool.

In FIG. 5, the racket (X) is spirally wound around the outer periphery of the frame shaft (W) and attached with a double-sided adhesive tape (3). Further, as shown in FIG. 6, a concave portion is formed in the spiral on the back surface of the grip (leather or rubber) (V) of the racket (X), or a concave portion is formed in the spiral on the frame shaft (W). The belt body (1 ') is built in along these concave portions.

A continuous vibrator (2) buried inside a ring body (1) made of an elastic soft material or a non-stretchable material provided on a surface of a belt body (1 ′). The shape of the continuous vibrator (2) may be a sphere, a disk, a cube, a rectangular body, a plate (see FIG. 7), a linear body or a band (when using a ring body (1), a high specific gravity is used). Rubber (see FIGS. 8C and 8D) may be used.

Further, as shown in FIG. 8, if cut grooves (4) are provided at regular intervals on the surface of the belt body (1 '), the minimum length is one and the length required by the user. It is designed so that it can be used as a guide when cutting with a piece.

Each of the cut grooves (4) is provided in a direction perpendicular to the length direction of the belt body (1 ′), but may be spirally wound as shown in FIG. ) May be provided diagonally.

[0019]

[Effect of the invention]

 According to this invention, a ring (1) or a belt (1 ') made of a soft material having elasticity is combined with a continuous vibrator (2), and the ring (1) is formed. ), The belt body (1 ') has a structure in which the vibrator (2) connected to the frame shaft (W) is isolated, and the vibration of the frame shaft caused by the impact of the ball is transmitted through the ring body (1) and the belt body (1'). The vibration of the continuous vibrator (2) is converted into the kinetic energy of the continuous vibrator (2), and the vibration of the continuous vibrator (2) is vibrated with the timing of the vibration of the frame shaft (W) shifted. Things.

A major feature of the present invention is that the use of a separated vibrator (2) for a ring body (1) made of a soft material having elasticity allows for expansion and contraction and deformation. It can be mounted along curved shapes of different mounting parts.

Further, the ring main body (1) is made of a soft material having elasticity, and can be expanded and attached to a predetermined portion, so that the ring main body (1) does not come off due to an impact.

In the case of the belt body (1 '), the double-sided adhesive tape (3) is provided on one of the front and back surfaces, so that the belt body (1') has an extremely useful effect such as convenient mounting.

[Brief description of the drawings]

FIG. 1 shows an embodiment of the present invention, wherein (a) is a front view,
(B) is a sectional view.

FIGS. 2A and 2B show an example of use of one embodiment of the present invention, wherein FIG. 2A is a partially cutaway side view, and FIG.

FIG. 3 shows a usage example of still another embodiment of the present invention;
(A) is a partially cutaway side view, and (b) is a side view.

FIG. 4 is a partially cutaway sectional view showing still another embodiment of the present invention.

FIG. 5 is a partially cutaway side view showing still another embodiment of the present invention.

FIG. 6 is a partially cutaway side view showing still another embodiment of the present invention.

FIG. 7 shows a usage example of still another embodiment of the present invention;
(A) is a partially cutaway side view, and (b) is a side view.

FIG. 8 shows a usage example of still another embodiment of the present invention;
(A), (b), (c) are side views, respectively.
(D) is a sectional view.

FIGS. 9A, 9B, 9C, and 9D are explanatory diagrams showing vibration modes.

FIG. 10 is an explanatory diagram illustrating a portion that is a “belly” having a large amplitude in a three-node bending mode generated in a relatively high-speed center impact.

[Explanation of symbols]

 Reference Signs List 1 ring body 1 'belt body 2 vibrator 3 double-sided adhesive tape 4 cut groove V grip W frame shaft X racket Y baseball bat Z golf club

Claims (6)

[Utility model registration claims] A ball hitting tool characterized in that a ring body (1) is provided with a soft material having elasticity, and a large number of continuous vibrators (2) are embedded in the ring body (1). Continuous vibration prevention device. 2. A wide ring body (1) made of a soft material having elasticity, and a plurality of continuous vibrators (2) are embedded in a plurality of rows inside the ring body (1). A continuous vibration prevention tool for a ball hitting tool. 3. A belt member (1 ') made of a soft material having elasticity or a material having no elasticity, and a plurality of continuous vibrators (2) are provided inside the belt member (1'). And a double-sided adhesive tape (3) provided on one of the front and back surfaces. 4. A belt member (1 ') made of a soft material having elasticity or a material having no elasticity, and a plurality of continuous vibrators (2) are provided on the surface of the belt member (1'). A continuous vibration preventing tool for a ball hitting tool, wherein a double-sided adhesive tape (3) is provided on the back surface. 5. A utility model wherein each shape of the continuous vibrator (2) is selected from a sphere, a disk, a cube, a rectangular body, a plate, a linear body, and a band. The continuous vibration preventing device for a ball hitting tool according to claim 1, 2, 3, or 4. 6. A hitting tool according to claim 3, wherein cut grooves (4) are provided at regular intervals on the surface of the belt body (1 '). Vibration prevention device.