JPS6072574A - Racket - Google Patents

Abstract

1. A racket, in particular a tennis racket, having a handle with a shank (2) of which the shank end (1) exhibits in the front face (3) of it a central tapped hole (11), where for elongation of the length of the shank at least one part of the handle constituting a length-adjusting element and an endpiece may be screwed onto the front face (3), characterized in that the length-adjusting element is or elements are made as (an) adjusting disc(s) (6; 61, 62, 63) provided with one central drilled hole (5), that the endpiece is formed by a handle head (7) provided with a central opening (8) and that the handle head (7) and the adjusting disc(s) (6; 61, 62, 63) are screwed firmly onto the shank end (1) by a common screw (9) which passes through the central drilled hole (5) and the central opening (8) and may be screwed into the tapped hole (11) in the shank end (1).

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a racket with a longitudinally adjustable grip, sometimes a tennis racket.

A racket of this type is known from West German Published Patent Application No. 203099g. The talent revealed there 1. According to an embodiment, the gripping shaft consists of several sleeves that can be pushed into one another in a nested manner against the force of a pressure spring. Among these sleeves, the end sleeves can be pulled out as grips for the racket. Its purpose is to allow the racket's axis to suddenly lengthen after the locking device is released, so that the user can still correctly hit a ball that would otherwise be unreachable. For this reason, the sleeve can be locked in at least one position. Additionally, each individual sleeve can be replaced with sleeves of different weight or length.

On the other hand, the object of the invention is to solve the problems initially stated in such a way that it can be adapted in a simple way/or strength. model of racket,
The purpose is to construct a tennis racket on a ship.

Means for solving the problem According to the invention, this object is achieved by the use of an adjustment disc which is mounted on the bottom end of the racket shaft via the head of the handle.

It has been found that adjustment of the grip length from Ko α to Gu A is sufficient for the desired adaptation of length. When the racquet is lengthened, the racquet has a ``heavier'' effect on the user, and when the racquet is shortened, K has a ``lighter'' effect on the user. 1. of varying numbers and/or varying thicknesses. Due to the use of 1-section discs, the media racket can be made heavier or lighter with respect to its effect. Thus, essentially one type of racquet is sufficient for all racquet weights previously considered necessary.

Further describing the invention, continuous adjustment of the grip length of the racquet can also be achieved when using a compressible adjustment disc and adjustment screw.

These and further objects, features and advantages of the invention will be further apparent from the following description, taken in conjunction with the accompanying drawings which illustrate, by way of example only, some embodiments in accordance with the invention. Let's become.

In both drawings, the handshake generally indicated by the reference numerals has a non-circular, e.g. square or rectangular grip shaft.
The cough grip shaft 2, preferably consisting of two half-shells, is connected to the ball-striking area of a racket (not shown), in particular a tennis racket. The handshake also has a grip head rest and at least one adjustment disc t.

Referring to Figure 1, the bottom end 3 of the grip shaft has a pink fastened thereto, said pink being especially made from gold bullion or viscous plastic particles, extending in the axial direction of the grip shaft. It's growing. Grasp the pin qil- and remove the bottom end of the thin rod from 3 to 1.
．． From 2cIn! It stands out at position a. The adjustment disc t has a central hole S and is mounted 7a on the bin q. The 1N knot disc can be made from a completely incompressible material such as plastic, wood, gold bullion or similar material;
-1. The compressor may be made from a material that is particularly volume compressible, such as foamed plastic, natural rubber, synthetic rubber or similar materials. The outer contour of the adjustment disc B follows the contour of the grip shaft. As shown, FJ@
The m-diskle may be composed of several fJ@node disks 6/, 6ko, 63, and these adjustment disks are:
Especially if the sleds are made from incompressible materials,
Preferably, the discs are of varying thickness.

No. 4 disc Otsu or adjustment disc Otsu l, Otsuko.

6J is at least partially covered by a grip head which is rigidly connected to the grip shaft by twisting. Adjustment disc used or disc AI, Aco, 63
This makes it possible to adapt even when the number or thickness of the The grip band/ll normally surrounds the grip axle and the adjusting disc, and this band can be of any known type and is first wound in a conventional manner.

As mentioned in the introduction, a longer grip shaft can make the racket feel "heavier" to the user, while a shorter grip shaft can make the racket feel more "weighty" to the user. Can be done. Fine disc t/, 6 pieces, 63
When used, they are relatively thin, like discs with a thickness of only a few millimeters, and the length of the racket can be adjusted precisely enough for many applications.

Compressible, especially volumetrically compressible adjustment disk A or AI
, tλ, when A3 is used, the screw 9 has a temporary head 7.
15? (shaped as an adjustment screw inserted through an aperture g))). The threaded part / is pressed from the external use 1O between the outer ends of the head elevation 7, and thus the adjusting disc A or the disc A/, according to the pitch of the screw.
42. While slightly compressing AJ, press the end T'1l of the grip shaft.
Threaded blind hole in XJ/L body of screw/θ
is screwed in.

According to the adjustment of the adjusting screw D, the compressible, preferably volumetrically compressible, detailed one-bar disc is also one disc AI, 42.
A.? ITJ'fil': j to achieve continuous adjustment of the pressure ff1(i)1, the handshake/and the total length of the racket, step 1≦) and the Ii deflection J. Therefore, in the case of the embodiment of the invention described, the adjusting disc 6 or the disc! , /, A, 2.43 Is the adjustment screw used only for coarse adjustment of the length of the crawling foot, while precise adjustment controls the degree to which it compresses the disc?
This is done based on the adjustment power of the body. In this way, a weight shift is achieved, so that, for example, the racket of the medium becomes "lower".
or can be adjusted within the "high" range, thus
Adapted to the user's game and/or strength at any time.
'L get. As can also be seen from FIG. 7, the opening for the bottle q extends through the disc shape into the inner surface /j- of the grip head 7, while the pink one ends in the disc tl. . In this way, tightening the adjustment twist compresses the disc and the bottle passes through the disc 61 and grips the head? Bin q does not prevent the shortening of handshake l because it can move inside.

Instead of having bins q or in addition to said bins, adjusting discs 6 or discs J/, A, 2. A.? are themselves of a self-locating shape, and by tightening the adjustment screw 9, by means of the curvature, their discs are placed on the bottom end 3 of the correspondingly shaped axle and the grip head When pressed by the inner surface 1.1 of 7 (which has a shape corresponding to the facing side of the adjusting disk 6 or diskle /, A, 4J), these disks are corrected.
Automatically retracted or pushed into axial position. For this purpose, the adjustment disc or disc A/
, &, 2.13 has a saucer shape, and the bottom end J of the grip shaft and the inner surface /j of the grip head 70 are engaged with both sides of this saucer shape. The tray-shaped edge /A of the receiver performs positioning. The catch may have a conical or pyramidal shape instead of a dish shape, or it may have concentric wave or trough rings or grooves to prevent the discs from slipping with respect to each other and with respect to the twisted grip head and grip shaft. A disc shape with a similar shape may also be used.

According to the 11 features of the curve υ)J shown in FIG. , 2 According to the top half of Figure 2, the adjustment disc or disc A/, 4.1.
A.? and over a small part of the shaft end. In this embodiment, the adjustment of the length of the racquet is made when the grip band llI is removed. Then the grip band Body /q is tightened again in the usual way.

However, the sleeve projection 17 may extend over the entire length of the grip, which may be, for example, 20 to 30 cm, as shown in the lower half of Figure 1. In the case of this embodiment, a fine 'a':l section of the length of the racket can be carried out without removing the grip band ltI. In both cases, the self-locating shape of the disc facilitates the mounting of the sleeve projection onto the disc and grip shaft.

When the projection /7 spans the length of the grip shaft, it is advantageous to provide, in the area of the end edge /g of the sleeve projection 17, a marking /9 on the grip shaft for use with the adjustment scale 1 to It is.

The mark /9 may be engraved and/or printed and (according to the embodiment on the lower half of the second prisoner) adjusts the holding length in relation to the edge /g of the sleeve protrusion /. Sometimes progressively covered or uncovered.

In this way, the user can easily adjust the racket J to the desired weight. In both embodiments shown in Figure 1, the grip length of 4 points is related to the tightening or loosening of the screw. adjustment disc 6 or AI.

It is given by the elasticity of 42.43.

As can also be seen in the lower half of FIG. 2, the end 81S of the grip shaft facing the striking area has a sleeve protrusion/
7 forms an enclosing recess O, the depth of which depends on the range of adjustment produced by the adjustment diskle or compression of 1 dA/, 1.2°t3. Part 4-0 may be covered by a truncated conical closed disc, 21 (which forms the edge /E), and may be completely filled with a volumetrically compressible material, such as foamed plastic.

Adjustment disc 6 or AI, 42.43 As the material of the river,
Any elastic rubber ladle 1 is suitable, in particular soft elastic materials such as natural rubber, soft polyvinyl chloride, soft, preferably foamed, urethane foam rubber or cellular rubber or compressible copolymers or Similar materials are suitable, but the material FiJ4. It should not be so soft that it deteriorates the strength of the steel.

The grip head 7, preferably together with the sleeve protrusion, is made of metal, e.g. aluminium, zinc die-casting, zinc extrusion injection molding, brass, k-copper, etc., or of a viscous plastic material, e.g. rigid polyvinyl chloride, rigid polyurethane. , polyamide, polyethylene, polypropylene, polystyrene, etc.

While various embodiments have been shown and described in accordance with the invention, the invention is not limited to these embodiments, but is susceptible to many changes and modifications as will occur to those skilled in the art. The invention is not limited to the details disclosed and described herein, but rather within the scope of the claims.
including all such changes and modifications.

EFFECTS According to the present invention, the length of the grip can be adjusted, preferably continuously, in a simple manner, and in principle, it is possible to adapt the length of the grip in a simple manner, which was previously considered necessary. all the weight'ff
One type is sufficient for 1 ton, and furthermore,
When using a compressible adjustment disc and an adjustment screw, it is possible to provide a racket whose length can be continuously adjusted.

[Brief explanation of drawings]

FIG. 7 is a side sectional view through the grip shaft of the racket; FIG. 2 shows the grip head with a short sleeve projection in the upper half and a sleeve projection corresponding to the length of the grip in the lower half; FIG. 11 is a side cross-sectional view through the grip 1111 of the racket showing the grip head. /...handshake, K...grip shaft, 3...bottom end, Hiroshi...bottle, S...hole, A...adjustment disc, 7...grip head, za...listen, ?・・Screw, IO・・Body, //・・Blind hole, ・・Screw head, /・・Grip strip, /j・・Inner surface, /Otsu・・Edge, /7・・Sleeve protrusion, 7g...
Edge, 19... mark, C θ... recess, A/, 1,2°t3
...adjustment disc.

Claims (1)

[Scope of Claims] l A racket having a longitudinally adjustable handshake, the handshake comprising: a grip shaft; a grip head fastened to the grip shaft; at least one adjustment disc removably connected to the bottom end of the handle, said at least one adjustment disc having a self-locating configuration and having an inner surface of the grip head as well as the grip shaft. A racket whose bottom end surface is configured to cooperate with the self-positioning shape of the adjustment disc. A racquet according to claim 1, wherein the adjustment disc is made entirely of incompressible material. , 3. Claim 1, wherein the adjusting disc is made of a bendable and compressible, in particular volumetrically compressible, material.
Racket listed in section. An adjustment screw passes through the center of the grip head and at least seven adjustment discs, the adjustment screw is screwed into the bottom end of the grip shaft, and the spacing between the grip head and the grip shaft is equal to the distance between the grip head and the grip shaft. Racket according to claim 1, characterized in that the features g'r can be adjusted with respect to each other in the axial direction by means of the adjusting screws in order to adapt the spacing to the thickness of at least one adjusting disc. The racquet of claim q, wherein the at least seven adjustment discs are identified in predetermined positions on a bin projecting longitudinally from at least seven of the grip shafts and grip heads. The grip head according to claim q. has a sleeve-like projection which surrounds at least the bottom end of the grip shaft in a slidable manner and substantially without play. racket. 2. The racket of claim 6, wherein the sleeve-like protrusion extends over substantially the entire length of the handshake. & In order to serve as an adjustment scale, an adjustment mark is provided on the grip 9 axis at a position in the region of the end of the sleeve-like projection of the grip hosudo in the range of sliding movement of the sleeve-like projection. A racket according to claim 7. 9. The racquet of claim 9, wherein the at least seven section A discs are formed from a soft elastomer. /a The soft elastomer is natural rubber, soft poly lt
7. % selected from the group consisting of fluorinated vinyl, flexible polyurethane, and foamed rubber or cellular rubber.Claim No. 9
Racket listed in section. /l The racket according to claim 1, wherein the grip head is made of metal. The metal that forms the grip head is aluminum, zinc,
A racket according to claim 1, which is selected from the group consisting of brass or bronze. /3. 8. A racket according to claim 7, wherein the grip head is formed from a viscous plastic material. The racket according to claim 1, wherein the grip head is made of a plastic material selected from the group consisting of polyvinyl chloride, hard polyurethane, polyamide, polyethylene, polypropylene, or polystyrene. /3 The racket according to claim 1, wherein the self-positioning shape is a saucer shape having a positioning edge. /& A number of the adjusting discs are provided, and each of the adjusting discs can be installed in combination between the grip head and the grip shaft, seven each. Claim 1.5-
Racket listed in section. 17. The racquet of claim 1A, wherein the adjustment disc is formed from a soft, compressible material. 7g. The racket according to claim 1, wherein a plurality of said adjustment discs are provided, and each of said adjustment discs can be mounted in combination with each other between said grip head and said grip shaft. 19. The gripping head has a sleeve-like projection which surrounds at least the bottom end of the gripping shaft in a sliding manner thereon substantially without play. A racket according to claim 1g. 20. The racquet of claim 19, wherein the core sleeve-like protrusion extends over substantially the entire length of the handshake.