JP3656136B2 - Continuous vibration prevention device for ball hitting device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a continuous vibration preventing device for a ball striking tool, and the ball striking tool refers to a tennis racket, a soft tennis racket, a squash racket, a badminton racket, a racket ball, a golf club, a baseball bat, and any other hitting tool.
[0002]
[Prior art]
Conventionally, the tennis racket propagates shock vibration from the gut to the frame, then propagates from the grip part to the body such as the wrist and elbow through the grip part, and is regarded as a problem such as tendonitis and tennis elbow due to shock vibration. Has been.
[0003]
Conventionally, in the case of a tennis racket, there is a vibration isolator that is attached to the bottom surface of the grip end and the inside of the frame shaft in order to reduce impact vibration, but there is no anti-vibration instrument that is detachably attached to the outer periphery of the frame shaft.
[0004]
In the first place, the frame shaft vibration transmitted to the body at the time of hitting the ball is the largest, and the typical vibration that affects the occurrence of obstacles in the body is the fundamental mode unique to the frame shaft. High three-bar bending mode is about 330Hz, two-bar torsion mode is about 360Hz, the primary vibration mode of strings is about 560Hz, and there are many other vibrations up to about 2000Hz with high frequency. A unique non-vibrating portion “node” is formed on the shaft.
[0005]
As shown in FIG. 9, the state of the nodes in the main vibration mode is a black and white border line part, and the part away from the node is the part where the amplitude of the frame shaft is increased, Especially, as the basic vibration mode of the racket, the one that greatly affects the unpleasant hitting feeling and the obstacle to the body is the 2nd and 3rd bend mode, which is the "belly" common to both modes. It is considered appropriate to place the vibration isolator on the part.
[0006]
The racket face part (B1, B2, B3, B4), grip end upper part (A), and part near the end of the frame shaft (C) shown in FIG. The generated three-node bending mode has a large “belly” amplitude, and by attaching a vibration isolator to this part, it is possible to improve the feeling of hitting the ball when hitting the center.
[0007]
In addition, this portion is also a “belly” in the two-bar bending mode that occurs mainly in low-speed hitting and off-center hitting, and is a place where the hitting feeling can be similarly improved.
[0008]
[Problems to be solved by the invention]
Therefore, in view of the fact that impact vibration due to a hit ball propagates from the source through the frame shaft portion to the human body through the grip portion, a vibration isolator is detachably attached to the frame shaft that propagates the impact vibration. The purpose is to develop and provide a continuous vibration prevention device that attenuates shock vibration and prevents damage to the body due to shock vibration.
[0009]
[Means for Solving the Problems]
In this invention, a ring body or a belt body is provided with a soft material having elasticity, and a plurality of continuous vibrators are provided on the inside and the surface of the ring body, and these are attached to a portion of the ball hitting tool that becomes the “belly”. Thus, shock vibration is prevented.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described with reference to FIGS. 1 and 2. A ring body (1) is provided with a soft material having elasticity, and a number of continuous vibrators (2) are provided inside the ring body (1). It is comprised from the continuous vibration prevention tool of the hitting tool characterized by having been embed | buried.
[0011]
The ring body (1) has 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 a racket (X ) Is slightly smaller than the outer diameter of the frame shaft (W), extended from the bottom of the grip end, inserted, moved to a predetermined position and mounted.
[0012]
Further, another embodiment of the present invention will be described with reference to FIGS. 3 and 4. A wide ring body (1) is provided by a material having elasticity, and a continuous vibrator (2) is provided inside the ring body (1). ) It is composed of a continuous vibration preventing tool for a ball striking tool characterized in that a large number are embedded in a plurality of rows.
[0013]
FIG. 3 shows the baseball bat (Y) that is attached to the grip gripping portion, extending from the bottom of the grip end.
Furthermore, FIG. 4 is attached between the grip portion of the golf club (Z) and the shaft.
[0014]
Further, another embodiment of the present invention will be described with reference to FIG. 5 and FIG. 6. A belt body (1 ') is provided with a stretchable soft material or a non-stretchable material, and the belt body (1 ′) A ball striking tool characterized in that a large number of continuous vibrators (2) are embedded inside or projecting outside, and a double-sided adhesive tape (3) is provided on either the front or back surface. It consists of a continuous vibration prevention tool.
[0015]
In FIG. 5, the racket (X) is wound spirally 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 recess is formed in the spiral on the back surface of the grip (leather or rubber) (V) of the racket (X), or a recess is formed in the spiral on the frame shaft (W). The belt body (1 ′) is built in along these recesses.
[0016]
Further, a continuous vibrator (2) embedded in the ring body (1) made of a stretchable soft material, or a continuous vibrator (1) provided on the surface of the belt body (1 ') with a non-stretchable material ( The shape of 2) is a sphere, disk, cube, rectangular parallelepiped, plate (see FIG. 7), linear body / band-shaped body [when using as a ring body (1), a high specific gravity rubber is used as a material. (See FIGS. 8C and 8D).
[0017]
Further, as shown in FIG. 8, if cut grooves (4) are provided at regular intervals on the surface of the belt body (1 '), when cutting from a minimum of one to the length required by the user. It is configured so that it can be used as a guide.
[0018]
Each cut groove (4) is provided in a direction perpendicular to the length direction of the belt body (1 '). However, as shown in FIG. 6, the cut groove (4) may be wound in a spiral. It may be provided in each direction.
[0019]
【The invention's effect】
According to the present invention, a ring body (1) or a belt body (1 ') made of a soft material having elasticity is combined with a continuous vibrator (2), and the ring body (1), belt The 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 hit ball is the vibration connected via the ring body (1) and the belt body (1 ′). This is converted into kinetic energy of the child (2), and the vibration of the continuous vibrator (2) vibrates with the timing of the vibration of the frame shaft (W) shifted, so that the effect of attenuating the vibration of the frame shaft is generated. .
[0020]
In addition, a major feature of the present invention is that the ring body (1) made of a soft material having elasticity can be expanded and contracted freely by using the separated vibrator (2). It can be mounted along the curved shape.
[0021]
Furthermore, the ring body (1) is made of a soft material having elasticity, and can be expanded and attached to a predetermined portion, so that it is not detached due to an impact.
[0022]
Further, 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 extremely useful effects such as convenient mounting can be obtained.
[Brief description of the drawings]
1A and 1B show an embodiment of the present invention, in which FIG. 1A is a front view, and FIG.
FIGS. 2A and 2B show usage examples of one embodiment of the present invention, in which FIG. 2A is a partially cutaway side view, and FIG. 2B is a side view;
FIGS. 3A and 3B show usage examples of still another embodiment of the present invention, in which FIG. 3A is a partially cutaway side view, and FIG. 3B 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.
FIGS. 7A and 7B show usage examples of still another embodiment of the present invention, in which FIG. 7A is a partially cutaway side view, and FIG. 7B is a side view.
FIG. 8 shows a usage example of still another embodiment of the present invention, wherein (a), (b) and (c) are side views, and (d) is a sectional view.
FIGS. 9A, 9B, 9C and 9D are explanatory diagrams showing vibration modes. FIGS.
FIG. 10 is an explanatory view showing a portion that becomes a “belly” having a large amplitude in a three-bar bending mode that occurs in a center hit at a relatively high speed.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 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 (5)

Mounted on tool sites vibration amplitude at the time of hitting the ball striking implement is increased, a ring body made of soft material having stretchability and (1), comprising a plurality of transducers (2), wherein the ring body (1) A continuous vibration preventing tool in a ball striking tool, wherein the vibrator (2) is embedded in a ring and embedded in a ring . Mounted on tool sites vibration amplitude at the time of hitting the ball striking implement is increased, a ring body made of soft material having stretchability and (1), comprising a plurality of transducers (2), wherein the ring body (1) the inside, the vibrator (2) embedded in a plurality of rows lined annularly and communicating the vibration prevention member in the striking tool, characterized by comprising integrally. Stretchable or non-stretchable made of a soft material belt body (1 ') is provided, in its interior, and buried chosen plurality of transducers (2) in the longitudinal direction, and, together with the integrated, the belt Continuous vibration in a ball striking tool characterized in that cut grooves (4) intersecting with the longitudinal direction of the surface of the body (1) are provided at regular intervals, and further , a double-sided adhesive tape is provided on either of the front and back surfaces. Prevention tool. Stretchable or non-stretchable made of soft material of the belt body (1 ') is provided, on its surface, provided to project chosen plurality of transducers (2) in the longitudinal direction, and, together with the integrated, the It provided a belt body (1) cut a groove intersecting the longitudinal direction of the surface (4) every predetermined interval, further continuous vibration preventing device in hitting tool characterized by comprising providing a double-sided adhesive tape on the back. The shape of the transducer (2) is a sphere, disc, cube, cuboid, a plate member, the linear member, any one of claims 1 to 4, characterized in that a member selected from the strip 1 communicating vibration preventing device in the hitting device of claim wherein.

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