JP2001112900A - Rocket for table tennis - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a racket for table tennis wherein a ball can be hit by the forehand or backhand in a stable manner regardless of 'penholder type' or 'shake-hands type' and regardless of a beginner or a skilled player. SOLUTION: In the racket, a bar-shaped grip part 2 is connected to the proximal end of a planar ball-hitting part 1, and a finger hooking part 3 is formed at the connection part between the hitting part 1 and the grip part 2 in such a manner that the part 3 protrudes from the surface of the part 1 so as to project from the opposite sides of the grip part 2. The part 3 is cylindrical and formed into an inverted cone form the outer circumferential surface of which expands upwardly.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a table tennis racket used for table tennis games and games.

[0002]

2. Description of the Related Art A typical table tennis racket is formed by integrally connecting a rod-shaped grip portion to a base end portion of a flat hitting portion. Table tennis rackets are roughly classified into two types, and are classified into a "pen holder type" and a "shake hand type" according to the difference in gripping of the grip portion. These two types of rackets have considerable differences in the shapes and structures of the hitting portion and the grip portion. Since the "pen holder type" generally hits the ball on one side of the hitting portion, rubber is usually stuck on only one side of the hitting portion. In the "shake hand type", rubber is stuck on both sides of the hitting portion to hit the ball on both sides of the hitting portion.

[0003] As for the grip portion, the gripping method is different between the "pen holder type" and the "shake hand type", so that the shape is suitable for each gripping method. FIG. 7 shows a “pen holder type” gripping method, and FIG. 8 shows a “shake hand type” gripping method. In the figure, reference numeral 51 denotes a hitting portion, 52 denotes a grip portion, and rubber 53 is attached to one side of the hitting portion 51 in the “pen holder type” and to both sides of the hitting portion 51 in the “shake hand type”. .

In the “pen holder type”, as shown in FIG. 7, a grip 52 is gripped by a thumb a and an index finger b so as to sandwich the grip 52 from the back to the front. The remaining middle finger c, ring finger d, and little finger e hit the back surface of the hitting portion 51, and support the hitting portion 51 from the back surface.

[0005] In the "shake hand type", as shown in FIG. 8, the middle finger c, the ring finger d and the little finger e hold the grip portion 52, the thumb a is applied to one surface of the hitting portion 51, and the index finger b is Hitting the other surface of the hitting portion 51
I support. In the following description, the ball hitting section 51 defines a surface hit by a forehand as a “front surface” and a surface hit with a backhand as a “back surface”.

[0006]

In the conventional "pen holder type" table tennis racket, since the grip portion 52 is a thin rod-like body, the grip portion 52 can be easily grasped by the thumb a and the index finger b, but the thumb a and index finger b
Since the contact area between the grip and the grip portion 52 is small, it is difficult for a beginner to stably hold the racket.

[0007] In addition, although there is almost no problem in hitting with a forehand, in hitting with a backhand, the surface of the hitting portion 51 is turned in a direction to the front, and further, the tip of the arm is twisted so as to be directed obliquely downward with respect to the front. The upper and thumb a tend to separate from the grip part 52, and the racket cannot be stably held. The degree of this instability becomes more remarkable as the surface of the hitting portion 51 is directed obliquely downward toward the front. For this reason, it is extremely difficult for a beginner to hit a ball with a backhand. In addition, it is difficult for an expert to hit the ball as strongly as in the forehand because the degree of stability is lower in the backhand state than in the forehand state.

[0008] With regard to the "shake hand type" table tennis racket, the grip portion 52 is gripped with the middle finger c, the ring finger d and the little finger e, so that the racket can be gripped stably and the sense of stability can be improved. There is not much difference between when hitting with the forehand and when hitting with the backhand, but especially in the expert, when swinging at high speed to hit strongly, a large centrifugal force is applied to the racket in the direction in which the grip part 52 comes out. Because it acts, the sense of stability is reduced. Therefore, when the grip of the grip portion 52 is particularly increased, there is a problem that the swing speed is reduced.

The present invention has been made in view of the above problems, and is applicable to both "pen holder type" and "shake hand type".
It is an object of the present invention to provide a table tennis racket capable of stably hitting a forehand ball and a backhand hit ball.

[0010]

SUMMARY OF THE INVENTION The present invention relates to a table tennis racket in which a bar-shaped grip portion is continuously connected to a base end portion of a flat ball hitting portion. A finger hook portion protruding from the surface of the portion and projecting from both side surfaces of the grip portion is formed.

According to the second aspect of the present invention, the finger hook portion is
It has a cylindrical shape, and its outer peripheral surface is formed into an inverted conical taper expanding upward.

[0012]

[Function] A finger-holding portion that protrudes from the surface of the hitting portion and protrudes from both sides of the grip portion is formed at a connecting portion between the hitting portion and the grip portion. Then, the finger hook is gripped by grasping the peripheral surface of the finger hook with the thumb and the index finger. In the “shake hand type”, the thumb and the middle finger grip the finger hook so that the thumb is attached to the peripheral surface of the finger hook.

[0013] In the "pen holder type", the contact area between the finger hook portion and the thumb and forefinger is large, so that the racket can be stably gripped. When hitting the ball with the back hand, the thumb does not separate from the finger hook portion and the racket. Can be stably held. In the "shake hand type", when the expert swings at a high speed in order to make a strong hit, a large centrifugal force acts on the racket in the direction that the grip part comes out, but the finger grip part is grasped by the thumb and the index finger As a result, the force applied to the hitting surface is stabilized. In addition, since the force for preventing slippage increases, it is not necessary to grip the grip part particularly strongly, and the swing speed does not decrease.

In the ping-pong racket according to the second aspect of the present invention, the finger-holding portion has a cylindrical shape, and the outer peripheral surface is formed in an inverted conical taper that expands upward. The finger catching portion can be grasped in a natural manner simply by being attached to the outer peripheral surface of the finger, and the outer peripheral surface is tapered.

[0015]

1 and 2 show the appearance of a "pen holder type" table tennis racket according to a first embodiment of the present invention. The racket for table tennis in the illustrated example has a rod-shaped grip portion 2 integrally connected to a base end portion of a flat ball hitting portion 1 and a surface side of a connecting portion between the hitting portion 1 and the grip portion 2.
The finger hook 3 is formed.

The hitting portion 1 has a rectangular shape with four rounded corners and a grip portion 2 at the center of the base end of the hitting portion 1.
Are connected. The grip portion 2 is a rod-shaped body having a rectangular vertical cross section. The back surface of the grip portion 2 is flush with the back surface of the hitting portion 1, and the surface of the grip portion 2 protrudes from the surface of the hitting portion 1.

The hitting portion 1 and the grip portion 2 are composed of a substrate portion 10 formed by cutting lightweight wood into a flat plate, and a thin back plate portion 11 made of cork material joined to the back surface of the substrate portion 10. Prepare for a series. Rubber 4 is joined to the entire surface of the hitting portion 1 except for the base end portion. A thin front plate portion 12 made of cork material is provided on the base end portion of the surface of the hitting portion 1.
Are joined. In the front plate portion 12, a portion connected to the grip portion 2 is cut out in an arc shape in order to attach the finger hook portion 3.

The grip portion 2 has a core plate material 13 joined to the upper surface of the substrate portion 10 and a top plate portion 14 made of cork material thereon.
Are joined. The core plate material 13 and the front plate portion 14 of the grip portion 2 are notched at a portion connected to the hitting portion 1, and the finger catching portion 3 is attached to the cutout portion 15.

The finger hook 3 of this embodiment is formed of a cork material, has a cylindrical shape as a whole, and has an inverted conical taper having an outer peripheral surface extending upward. Note that the finger hook portion 3 may be formed of a material other than cork material as long as it is lightweight. Further, it is desirable that the outer peripheral surface of the finger hook portion 3 is formed to be tapered, but it is not always necessary to make the outer peripheral surface tapered. The finger hook 3 is provided with the notch 1 of the grip 2.
5, which is adhesively fixed to the hitting portion 1 and the grip portion 2, protrudes from the surface of the hitting portion 1 and projects from both side surfaces of the grip portion 2.

The finger hook portion 3 is set to a thickness corresponding to the width of the index finger, specifically, a thickness of about 15 to 25 mm, and the diameter of the central portion of the thickness is set so that the finger can be hooked in a natural shape. The diameter is set to about 30 to 50 mm.
Note that the finger hook portion 3 does not necessarily have to be cylindrical as in this embodiment as long as the finger hook portion 3 protrudes from the surface of the hit ball portion 1 and projects from both side surfaces of the grip portion 2. Further, the frictional force with the finger may be increased by forming a large number of grooves or uneven patterns on the outer peripheral surface of the finger hook portion 3. Further, the finger hook 3 may be separately manufactured and attached to the connecting portion between the hitting portion 1 and the grip portion 2 by bonding as in this embodiment, but is not limited thereto.
The constituent members of the grip portion 2, specifically, the core plate material 13 and the front plate material 14 may be integrally formed with the substrate portion 10 so as to be integrally formed.

FIGS. 3 and 4 show the appearance of a "shake hand type" table tennis racket according to a second embodiment of the present invention. The racket for table tennis according to this embodiment also has a rod-shaped grip portion 2 integrally connected to a base end portion of a flat ball hitting portion 1 and a surface side of a connecting portion between the hitting portion 1 and the grip portion 2. A finger hook 3 is formed.

The flat shape of the hitting portion 1 is substantially elliptical, and a grip portion 2 is connected to the center of the base end portion of the hitting portion 1. The grip portion 2 is a rod-shaped body having a substantially rectangular vertical cross-sectional shape, and the front and back surfaces of the grip portion 2 slightly protrude from the front and back surfaces of the hitting portion 1.

The hitting portion 1 and the grip portion 2 are provided with a series of substrate portions 20 formed by cutting lightweight wood into flat plates. Rubber 4 is bonded to the entire surface of the hitting portion 1 except for the base portion on both the front and back surfaces.

The grip portion 2 has a front plate portion 21 and a back plate portion 22 made of the same wood as the substrate portion 20 joined to the upper and lower surfaces of the substrate portion 20. Front plate 21 on the front side
Has a cut-out portion connected to the hitting portion 1, and the finger catch portion 3 is attached to the cut-out portion 23.

The finger hook portion 3 of this embodiment has a cylindrical shape as a whole, and its outer peripheral surface has an inverted conical taper extending upward. The finger catching portion 3 is positioned in the notch portion 23 of the grip portion 2 and is adhesively fixed to the hitting portion 1 and the grip portion 2, and projects from the surface of the hitting portion 1 and from both side surfaces of the grip portion 2. It is overhanging.

The finger hook 3 is set to a thickness corresponding to the width of the thumb, specifically, a thickness of about 20 to 30 mm.
The diameter of the central part of the thickness is set to a diameter of about 30 to 50 mm so that the finger is hooked in a natural manner. In addition,
Also for the "shake hand type" table tennis racket, the finger hook portion 3 does not necessarily have to be cylindrical in shape as long as it protrudes from the surface of the hitting portion 1 and projects from both side surfaces of the grip portion 2. Further, the frictional force with the finger may be increased by forming a large number of grooves or an uneven pattern on the outer peripheral surface of the finger hook portion 3. further,
The finger hook portion 3 is formed integrally with the front plate 21 and the substrate portion 2 is formed.
0 may be adhered to the upper surface.

In each of the above-described embodiments, a finger hook portion 3 projecting from the surface of the hitting portion 1 and projecting from both side surfaces of the grip portion 2 is provided at a connecting portion between the hitting portion 1 and the grip portion 2.
Is formed, when gripping the grip portion 2,
In the “pen holder type”, as shown in FIG. 5, the finger hook portion 3 is gripped by grasping the peripheral surface of the finger hook portion 3 with the thumb a and the index finger b. The middle finger c, the ring finger d, and the little finger e are applied to the back surface of the hitting portion 1 to support the hitting portion 1 from the back surface as in the conventional example.

In this case, the finger hook 3 has a cylindrical shape, and the outer peripheral surface thereof is tapered in the shape of an inverted cone expanding upward, so that the index finger b or the thumb a can be attached to the outer peripheral surface of the finger hook 3. By itself, the finger catching portion 3 can be grasped in a natural manner, and since the outer peripheral surface is tapered, the finger is in a catching state and the finger can be prevented from coming off or coming off.

On the other hand, in the "shake hand type", as shown in FIG. 6, the grip part 2 is gripped by the ring finger d and the little finger e, and the thumb a The finger hook 3 is gripped by the middle finger c. The index finger b is applied to the back surface of the hitting portion 1 to support the hitting portion 1 as in the conventional example.

In this case, since the finger-holding portion 3 has a cylindrical shape and the outer peripheral surface is tapered in the shape of an inverted cone which expands upward, the finger a can be naturally attached only by attaching the thumb a to the outer peripheral surface of the finger-holding portion 3. Since the finger catching portion 3 can be gripped in a proper shape, and the outer peripheral surface is tapered, the finger is in a catching state and the finger can be prevented from coming off or coming off.

In the "pen holder type", since the contact area between the finger hook portion 3 and the thumb a and the forefinger b is large, the racket can be stably gripped, and when hitting with a backhand, the surface of the hitting portion 1 faces the front. The thumb a does not separate from the finger hook portion 3 even when the racket is directed obliquely downward with respect to the direction and further to the front, and the racket can be stably held.

In the "shake hand type", since a skilled player hits the ball strongly, a large centrifugal force acts on the racket in a direction in which the grip portion 2 comes out when the player swings at a high speed. Since the finger hook portion 3 is gripped, the degree of the force applied to the hitting surface is stabilized. Further, since the force for preventing the gripping portion from increasing, the grip of the grip portion 2 does not need to be particularly strong, and the swing speed does not decrease.

[0033]

As described above, according to the present invention, a finger-holding portion projecting from the surface of the hitting portion and projecting from both side surfaces of the grip portion is formed at the connecting portion between the hitting portion and the grip portion. Regardless of whether it is a "shake hand type" or a beginner or an expert, it can stably hit the ball with the forehand and the backhand.

According to the second aspect of the present invention, since the finger catching portion is formed in a cylindrical shape having an inverted conical taper whose outer peripheral surface expands upward, a predetermined finger is naturally attached only to the outer peripheral surface of the finger catching portion. Since the finger-holding portion can be gripped in a suitable manner, and the outer peripheral surface is tapered, the finger is in a hooked state, so that the finger can be prevented from coming off or coming off, and the stability can be further increased.

[Brief description of the drawings]

FIG. 1 is a plan view of a table tennis racket according to a first embodiment of the present invention.

FIG. 2 is a front view of the first embodiment.

FIG. 3 is a plan view of a table tennis racket according to a second embodiment of the present invention.

FIG. 4 is a front view of the second embodiment.

FIG. 5 is a perspective view showing a state where the grip portion of the first embodiment is gripped.

FIG. 6 is a perspective view showing a state in which a grip portion of the second embodiment is gripped.

FIG. 7 is a perspective view showing how to grip a grip portion of a conventional “pen holder type” table tennis racket.

FIG. 8 is a perspective view showing how to grip a grip portion of a conventional "shake hand type" table tennis racket.

[Explanation of symbols]

 1 hitting part 2 grip part 3 finger hook part

Claims (2)

[Claims] 1. A table tennis racket in which a bar-shaped grip portion is continuously provided at a base end portion of a flat ball hitting portion, wherein a connecting portion between the hitting portion and the grip portion projects from the surface of the hitting portion and has a grip portion. Table tennis racket formed with finger hooks protruding from both sides of the racket. 2. The table tennis racket according to claim 1, wherein the finger hook portion has a cylindrical shape, and an outer peripheral surface is formed in an inverted conical taper expanding upward.