JP2001120698A - Table tennis packet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To manufacture a table tennis racket that can lessen dynamic vibration, reduce load applied to the hands of a player and improve a feeling of ball striking during a game. SOLUTION: A table tennis racket having a flat body 2 having a nearly flat racket front face 3 and a nearly flat racket rear face 4, grips 14 and 33 connected to the racket body 2. At least one hollow body 11, 12, 35a to 35e is arranged adjacent to or in the table tennis racket 1, the hollow body 11, 12, 35a to 35e is filled with many movable cushions 37a to 37d to reduce dynamic vibration of a table tennis racket.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a table tennis racket according to the main claim.

[0002]

2. Description of the Related Art German Utility Model Publication No. 299 03 0
According to 21 U1, a table tennis racket according to the main claim is known. The table tennis racket known from this publication has a flat racket body joined with two grip shells. In order to reduce the weight of the table tennis racket, the grip shell and the racket body each have a notch, whereby a hollow grip is formed. This publication proposes filling the hollow grip with a foam material in order to reduce the likelihood of the hollow grip being damaged and to better join the hollow grip with the racket body. Also, the vibration that appears when hitting the ball should be reduced.

[0003] German Utility Model Publication No. 299 03 02
The table tennis racket known in No. 1 U1 vibrates a flat plate-shaped racket main body through an impact transmitted when the racket comes into contact with a ball. This vibration is transmitted from the racket body to the player's hand through the grip. In that respect, this known table tennis racket has the problem that, due to its small size, the hollow grip is transmitted from the racket body to the player's hand with little damping. Also, due to its size, it is not possible to reduce the vibration of a solidified foam material, of course. The lighter structure of the racket for table tennis according to German Utility Model Publication No. 299 03 021 U1 has, of course, many advantages, but therefore has a weaker resistance to vibrations, resulting in a poorer feel at impact. There is also a problem that a large mechanical burden adversely affects a hand.

German Offenlegungsschrift DE 44 30
According to 476 A1, there is known a table tennis racket having a flat plate-shaped racket body joined to two grip shells made of various materials and thereby forming a grip. In this table tennis racket, vibrations are similarly transmitted from the flat plate-shaped racket body to the player's hand.

[0005] It is therefore an object of the present invention to reduce the mechanical vibration of the table tennis racket, reduce the burden on the player's hand, and at the same time improve the feeling of hitting during table tennis. To manufacture rackets.

[0006]

This problem is solved by the table tennis racket of the present invention having the features of claim 1.

An advantage of the present invention is that the hollow body of the present invention filled with a buffer can be mounted on any table tennis racket at low cost, so that the present invention can be used worldwide. is there.

A further advantage of the present invention is that the good vibration characteristics of the table tennis racket of the present invention can be transmitted at least without a significant increase, and thus are very light and light in weight, necessarily having a low resistance to vibration. The advantage of the present invention having outstanding advantages is that it can be used in a table tennis racket capable of maximizing efficiency.

In addition, according to the present invention, a new method of manufacturing a racket for table tennis, which has not been feasible conventionally because of its disadvantageous reaction to vibration, becomes possible.

[0010]

SUMMARY OF THE INVENTION Through the method described in the claims, it is possible to further form the advantages of the table tennis racket according to the present invention.

[0011] Preferably, the wall thickness of the hollow body is smaller than the size of the hollow body. This allows the cushion to use more space to give a good effect on the cushion. In addition, the size of the hollow body is reduced. Here, the wall thickness may not be constant.

Preferably, the hollow body is made of plastic. As a result, the hollow body can be manufactured at low cost and, moreover, has a reduced size.

[0013] Preferably, the hollow body is at least substantially hollow spherical. As a result, the shock absorber in the hollow body is mixed particularly well during vibration, and the shock absorption is further improved.

[0014] Preferably, the buffer is spherical and / or composed of graphite. Thereby, favorable dispersion of vibration energy is performed. In addition, graphite spherical buffers are easily provided.

Preferably, the grip has a notch, and the hollow body is arranged in the notch. Thereby, the hollow body is firmly arranged adjacent to the grip. Moreover, the hollow body is integrated into the grip without changing the outer shape of the grip.

[0016] Preferably, the grip has a long notch,
A number of hollow bodies are evenly distributed in the notch. This enables a particularly effective and even damping. In addition, in this method, the size reduction that adversely affects the response of the table tennis racket to vibration is compensated for by the hollow body, so that the size of the table tennis racket is more suitably reduced.

Preferably, the hollow body is fixed to an adhesive tape for bonding in the notch. Thereby, the number of working steps for disposing and fixing the hollow body in the notch can be obviously reduced. In addition, by fixing the hollow body to the adhesive tape, the arrangement and the interval of the hollow body are determined, and the mounting error can be prevented.

Preferably, the grip has two grip shells joined to the racket front surface or the racket rear surface of the racket body, wherein at least one grip shell has one notch in which at least one hollow body is arranged. . The conversion to the invention is particularly easy and at low cost, so that all other components of the table tennis racket can be taken over without modification. Moreover, the known table tennis rackets are thereby particularly easily reinforced.

Preferably, the racket body has, in the region of the grip, a notch in which at least one hollow body is arranged. The hollow body is therefore arranged on the intermediate axis of the table tennis racket and has a positive effect on the response of the table tennis racket to vibrations.

Preferably, the grip shell and the racket body have notches joined together to form a hollow grip in which at least one hollow body is arranged, and the notches may have one or more hollow notches. The body has an embedded foam. This combines the advantages of a lightweight construction and good cushioning in a stable formation of the grip.
Moreover, the hollow body is suitably secured to the grip through the foam.

[0021]

BRIEF DESCRIPTION OF THE DRAWINGS Embodiments of the present invention are easily represented in the drawings and are explained in more detail in the following description. FIG. 1 (A) shows a first embodiment of a table tennis racket 1 according to the present invention. The table tennis racket 1 is used especially for table tennis competitions. The table tennis racket 1, however, is also suitable for other similar ball games.

The table tennis racket 1 has a flat racket body 2. The racket body 2 is composed of a plurality of plywood layers, which can be arranged, inter alia, between special layers of plastic, carbon or similar substances. The racket body can also be made of other materials, such as plastics and synthetics. The racket body 2 is shown in FIG.
As shown in (B), it has a flat racket front surface 3 and a racket rear surface 4 joined to the racket surface members 5 and 6. The racquet surface members 5, 6 are made of rubber, which has, among other things, properties that are unique to the racquet surface members 5, 6 with respect to the player's handicap. In order to prevent the racket surface members 5, 6 from separating at the end 7 of the racket body 2, the racket body 2 is at least partially attached to the side surfaces 8 in the area of the racket surface members 5, 6 with adhesive tape over a wide area. And the racket surface members 5, 6 at least partially overlap the side surface 8.

The racket body 2 includes grip shells 9 and 1
0, and this connection is performed, for example, using an adhesive. The grip shells 9, 10 can be made of wood, especially plywood or plastic. The grip shells 9, 10 can, however, also be composed of other materials. Hollow bodies 11 and 12 are arranged in the grip shells 9 and 10, respectively, and are filled with a large number of movable cushions in the hollow bodies 11 and 12, respectively. The structure of the buffer is described in the description for FIG. The hollow bodies 11 and 12 are connected to the upper parts 13 of the grip shells 9 and 10.
Are located in

The grip shells 9 and 10 together with the plate-shaped racket body 2 form a grip 14. In the present embodiment, the grip 14 has no further hollow space for taking in the hollow bodies 11 and 12 except for the notch.

When hitting or hitting the table tennis ball with the racket front surface 3 or the racket back surface 4 of the table tennis racket 1, the table tennis racket 1 is connected to the racket body 2 via the racket surface member 5 or the racket surface member 6. The vibration generated in the racket surface member 5 or the racket surface member 6 is given from the contact point with the ball for use, and the vibration is continued by the grip 14. Filled hollow body 11,1
Through this, the vibration at the upper part 13 of the grip 14 is mitigated, whereby the vibration is rapidly reduced and the racket body 2 of the table tennis racket 1 comes to rest in a shorter time. In particular, the vibration energy transmitted to the hand held by the grip 14 is greatly reduced due to the relaxation by the filled hollow bodies 11 and 12.

In the first embodiment, the grip 14 is basically constituted by a plurality of grip shells 9 and 10, as in the other embodiments of the table tennis racket of the present invention. As a result, the grip 14 has a substantially elliptical cross section,
Its cross section is substantially constant over the length of the grip. To enable better retention of the grip 14,
The inclined surfaces 15, 16 of the grip shells 9, 10 are exceptionally formed.

The present invention, however, provides a grip shell 9, 1.
The present invention is not limited to the described example of 0, and any shape of the grip, such as a concave shape, a conical shape, or an anatomical grip shape, can be used.

FIG. 2A shows a cross section of a second embodiment of the table tennis racket 1 indicated by IIa in FIG. FIG.
(B) shows a sectional view of the second embodiment of the table tennis racket 1 along the section line indicated by IIb in FIG. 2 (A). The matters already described are sufficient in the drawings corresponding to them, and therefore need not be repeated.

The grip shells 9 and 10 of the second embodiment are:
The table tennis racket 1 has notches 20 and 21 which are separated from each other via the racket body 2. Notches 20, 21
Are sealed with stopper portions 22 and 23. The grip shells 9, 10 are therefore joined at their ends 24, 25 and the upper part 13 to the racket body 2 via plug parts 22, 23.

The notches 20 and 21 have adhesive tapes 26 and
A number of hollow bodies 11, 12 fixed to the inner surfaces 28, 29 of the grip shells 9, 10 by 27 are arranged.

The vibration transmitted to the grip shells 9 and 10 along the surface of the racket main body 2 is reduced by the filled hollow bodies 11 and 12. At that time, relaxation corresponding to the length of the grip 14 occurs.

In addition, the size of the grip 14 is reduced by the notches 20, 21 of the grip shells 9, 10. Therefore, the weight of the table tennis racket 1 is reduced at the same time as the size.

The notches 20, 21 are, in particular, plug portions 22, 2.
Before being sealed in 3, it is additionally filled with foam. As a result, the notches 20, 21 are filled with a strong and durable foam. Suitable foams are described in the description for FIGS. 3 (A) and 3 (B). In the foam-filled grip 14, at least a part of the hollow bodies 11, 12 are embedded in the foam and are thereby additionally fixed. Furthermore, the grip shells 9 and 10 are additionally joined to the racket body 2 on the foam material, so that the stability of the grip is improved.

FIG. 3A shows a cross section of the racket for table tennis according to the third embodiment of the present invention, which is indicated by IIa in FIG. FIG. 3B is a sectional view of the table tennis racket according to the third embodiment of the present invention, taken along a section line indicated by IIIb in FIG. 3A. The matters already described are sufficient in the drawings corresponding to them, and therefore need not be repeated.

In the racket 1 for table tennis according to the third embodiment, the grip shells 9 and 10 are joined to each other on the notch 30 of the racket body 2 and integrated into the notches 20 and 2.
1 by which a notch 31 is formed. The notches 20, 21, 30 are formed slightly longer. The grip shells 9, 10 are joined to the racket body 2 at the upper part 13, the lower part 32 and the ends 24, 25, so that a hollow grip 33 is formed.

The notch 31 in which the hollow bodies 35a to 35d are embedded is filled with a foam material. At that time, the hollow body 3
5 a to 35 d are arranged at least on the intermediate shaft 36 of at least the racket main body 2 of the table tennis racket 1. The foam material 34 is mainly made of a polyurethane foam material that is formed after the components necessary for producing the polyurethane foam material are injected into the cutouts 31 and subsequently attached to the racket body 2 with the grip shell. As a result, the foam material 34 fits into the notch 31 both in shape and size. Instead, as shown in FIG.
In particular, the components necessary for the production of polyurethane foam can be injected into the lower part 32 of the hollow grip 33, and after the notch 31 is filled with the foam, the plug portions (22, 23, FIG. 2)
An opening that can be sealed in (B)) can also be provided.

The hollow bodies 35a to 35d may be provided with a large number of movable cushions in the hollow bodies 35a to 35d, for example, as shown at 37 in order to reduce the mechanical vibration of the table tennis racket 1. it can.

FIG. 4 shows a long cut in a hollow body 35a-35e which is filled with a number of freely movable buffers in each of the hollow bodies 35a-35e and which is fixed to the inner surface 26 of the grip shell 9 with adhesive tape 26. 9 shows a further embodiment of the grip shell 9 having a notch 20.

The notch 20 is incorporated into a conventional grip shell made of various materials, inexpensively manufactured with a wooden or plastic grip shell. Therefore, the hollow bodies 35a to 35e according to the present invention are evenly distributed on the grip shell 9 via the adhesive tape 26 joined thereto. Thereby, the conventional table tennis racket can be changed to the table tennis racket 1 of the present invention by processing the grip shell in the grip shell 9 of the present invention.

FIG. 5 shows the hollow body 1 according to the invention, filled with a number of movable buffers 37 in the hollow body 11.
1 illustrates one embodiment. The hollow body 11 is formed in a hollow spherical shape, and is particularly made of plastic. The wall thickness 38 of the hollow body 11 is smaller than the size of the hollow body 11 given by the outer diameter of the hollow body 11 formed into a hollow spherical shape in this embodiment. A hollow chamber 40 is formed in the hollow body 11 so that the buffer 37 can move freely. The mechanical vibration of the table tennis racket 1 is transmitted to the hollow body 11 via the grip 14 or the hollow grip 33. Therefore, the inner wall 41 which is the surface of the hollow chamber 40 transmits at least a part of the vibration energy to the buffer 37. For example,
In the area 42, the energy is transmitted to the buffer 37a, and in the area 43, the energy is transmitted to the buffer 37b.
Is transmitted to Shock 44a, 44b with vibration energy
Are transmitted to the buffers 37a and 37b, respectively. Since the area 42 of the inner wall 41 substantially opposes the area 43 of the inner wall 41,
The direction of the impacts 44a, 44b is at least directly opposite to the buffer bodies 37a, 37b by their transmission. In the present embodiment, the buffer 37 is formed in a spherical shape, and is particularly made of graphite. Graphite has the advantage of being very flexible and of good energy dissipation.

The invention is not limited to the embodiments described above. In particular, the filled hollow body 1
The racket 1 can be arranged at any position in or adjacent to the table tennis racket 1, and can also be arranged in or adjacent to the racket body 2. The buffer 37 may be formed using other granules such as sand. The hollow body 11 can also be formed in another, for example, cubic shape.

[Brief description of the drawings]

FIG. 1 (A) is a first table tennis racket of the present invention.
1 (B) is a side view of a table tennis racket according to a first embodiment of the present invention. FIG.

FIGS. 2A and 2B show cross sections of a table tennis racket according to a second embodiment of the present invention indicated by IIa in FIG.

3 (A) shows a cross section of a table tennis racket according to a third embodiment of the present invention indicated by IIa in FIG. 1, and FIG. 3 (B) shows FIG. 3 (A). Figure 3 shows a sectional view of a third embodiment of a table tennis racket according to the present invention, along the section line indicated by IIIb therein.

FIG. 4 shows a grip shell of a table tennis racket according to a fourth embodiment of the present invention.

FIG. 5 is an embodiment of the hollow body of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Table tennis racket 2 ... Racket main body 3 ... Racket front surface 4 ... Racket back surface 5, 6 ... Racket surface member 9, 10 ... Grip shell 11, 12, 35a-35e ... Hollow body 14, 33 ... Grip 15, 16 ... Incline Surface 20, 21, 30, 31 Notch 22, 23 ... Plug portion 24, 25 ... End 26, 27 ... Adhesive tape 28, 29 ... Inner surface 37a-37d ... Buffer body 38 ... Wall thickness

Continuation of front page (71) Applicant 500454954 Room 902, 9th Floor, Chung Kiu Com. Bld g. 47-51 Shan Tung Street Kowloon, Hong Kong (72) Inventor Michael Schneider D-56567, Neuburg, Germany, Brandenburg Strasse 50

Claims (17)

[Claims] 1. A flat racket body (2) having a substantially flat racket front surface (3) and a substantially flat racket back surface (4), and grips (14, 33) joined to the racket body (2). A table tennis racket having at least one hollow body (11, 12, 35a-35e) arranged adjacent to or inside a table tennis racket (1), the hollow body being a table tennis racket Hollow body (11,12,35a-35e) to reduce the mechanical vibration of
A table tennis racket filled with a number of movable cushions (37a-37d) therein. 2. Hollow body (11, 12, 35a-35e)
The racket for table tennis according to claim 1, wherein the wall thickness of the racket is smaller than the size of the hollow body (11, 12, 35a-35e). 3. Hollow body (11, 12, 35a-35e)
The table tennis racket according to claim 1 or 2, wherein the racket is made of plastic. 4. Hollow body (11, 12, 35a-35e)
Is a hollow spherical shape, at least, the table tennis racket according to any one of claims 1 to 3. 5. The racket for table tennis according to claim 1, wherein the buffer (37, 37a-37d) is spherical. 6. The cushioning member (37, 37a-37d) is made of graphite.
A racket for table tennis according to any one of claims 1 to 5. 7. A hollow body (11, 12, 35a-35e)
7. A table tennis racket according to claim 1, wherein the table tennis rackets are arranged in or adjacent to the grips (14, 33). 8. The grip (14, 33) has a notch (2).
The racket for table tennis according to claim 7, wherein the racket has a hollow body (11, 12, 35a-35e) in a notch thereof. 9. The grip (14, 33) has a long notch (20, 21, 30, 31) in which a number of hollow bodies (11, 12, 35a-35e) are evenly distributed. The racket for table tennis according to claim 7, wherein the racket is distributed. 10. A hollow body (11, 12, 35a-35)
10. Table tennis according to claim 8, wherein e) is fixed to at least one adhesive tape (26) for being glued in the notches (20, 21, 30, 31). racket. 11. The grip (14, 33) has two grip shells (9, 10) joined to the front racket (3) or the rear racket (4) of the racket body (2). A table tennis racket according to any one of claims 1 to 6. 12. At least one grip shell (9, 10) is provided with at least one hollow body (11, 1).
2, 35a-35e) are arranged in notches (20,
The racket for table tennis according to claim 11, wherein the racket has (21). 13. Both grip shells (9, 10).
The table tennis racket according to claim 11 or 12, wherein an adhesive tape (26) in which the hollow bodies (11, 12, 35a-35e) are evenly arranged is adhered to the hollow body (11, 12, 35a-35e). 14. The racket body (2) is
At least one hollow body (35a-3)
The table tennis racket according to any of claims 11 to 13, characterized in that it has a notch (30) in which 5d) is arranged. 15. The grip shell (9, 10) and the racket body 2 form a hollow grip (33), and the notches (20) in which at least one hollow body (35a-35d) is arranged are joined. , 21, 30), the table tennis racket according to any one of claims 11 to 14. 16. Notches (20, 21, 30, 31)
Is one or more hollow bodies (11, 12, 35a-35).
Table tennis racket according to any of claims 8, 9 or 12 to 15, characterized in that e) comprises a buried foam (34). 17. The racket surface members (5, 6) respectively appearing on the flat racket front surface (3) and the flat racket back surface (4).
Racket for table tennis according to any of the above.