FR2811582A1 - Damping system for table tennis bat has the handle bored out from the rear to take a rigid tube anchored into the head of the handle and with damping between the tube and the rear of handle - Google Patents

Abstract

A damping system for a table tennis bat has the handle bored out from the rear of the handle to near to the top of the handle. A rigid tube with a diameter smaller than the bore is anchored into the head of the handle with one end and has its outer end held by damping (9) between the tube and the handle. Two half shells (3) forming the handle sandwich the handle extension of the bat and are separated from the tapering tops (5) of the handle by a damping insert layer (10) of leather or cork. The tube is made of rigid material such as aluminium, titanium or carbon fibre.

Description

The invention relates to a table tennis racket.

  consisting of a percussion blade and a handle.

  The handle may usually consist of an extension of the percussion blade and handle shells, mounted on it in an unsecured manner. A table tennis racket must in any case meet the requirements that the percussion blade and the

  handle should remain securely connected together.

  For this reason, it is already customary to integrate the percussion blade, so to speak, in the handle, knowing that individual handle shells are mounted in an undissociable manner on both sides, which gives the handle once together. We thus obtain a racket

  table tennis which is of high stability and reliable

bility.

  In any case, it should not be overlooked that, in known tennis rackets, the handle and the percussion blade are connected together rather rigidly. This has the consequence that the vibrations of the percussion blade, during the game, are transmitted to the player's hand via the handle. This can, however, adversely affect the feeling of "ball" felt by a player. Particularly when the propulsion frequency is high, safety and the ability to

  a player's reaction may then degrade.

  This is how the invention provides a remedy. She is going to perfect a table tennis racket, so that

  reduce the disturbing influences mentioned.

  This problem can be solved, according to a first proposition of the invention, by the fact that the handle

  has a central bore which follows its longitudinal axis

  nal, drilling going from the rear side of the handle to the front handle area, that concentrically in this hole, as a core, a tube of small diameter is inserted and anchored in the front handle area, and that the annular gap, formed between the passage and the tube, is closed on the rear face of the handle using

  an elastic sealing ring.

  As can be seen, if, in the case of unity con-

  naked, this consists of the percussion blade, its extension and the handle shells mounted on it, in any case this unit is limited only to the front handle zone, while, in the rest of the handle zone , due to the central passage arranged in the direction of the longitudinal axis, the maintenance of cohesion is interrupted in places, which has the consequence of reducing rigidity or of having easier mobility. Mobility is purposely damped using the elastic material, via the tube that leaves

  of the percussion blade or the front handle area.

  An improved solution is that the handle is subdivided into a front part, having appendages

  handle mounted on both sides of the percussion blade

  sion, and a rear part making the rest of the poi-

  gné, that, in the direction of the longitudinal axis of the handle, a tube is anchored in the front part of the handle, that the rear part of the handle has a longitudinal bore of a larger diameter than the tube, that the annular gap, formed between the tube and the longitudinal bore of the rear handle part, is closed at the beginning and at the end of the rear handle part, using an elastic sealing ring, and qu 'A separation layer, made of a material capable of being compressed and twisted, is provided at the transition between the front part and the rear handle part. With this embodiment, one can not

  only dampen a bending of the handle so that

  but in addition we can also cushion

a twist.

  Advantageously, the tube is made of a material resistant to bending, such as aluminum,

  titanium, carbon fiber, or the like.

  The proposed sealing ring can be used not only for cushioning, but also to ensure the cohesion of the table tennis racket, this that the sealing ring has been pressed firmly into the annular gap or was there

  fixed by gluing. These different requirements are met

  made by a sealing ring, especially if it

  is made of several layers and in different materials

  rials. One can consider as material especially the rubber-

  cabbage and synthetic material. You can also choose

  other materials, such as leather, artificial leather

  sky or cork, to make the separating layer.

  In the case of the improved solution, for which the rigid connection between the front and remaining handle part (rear) is eliminated, whether or not the remaining handle part still contains part of an initial extension of the blade percussion, no longer plays any role. Moreover, this handle part can be made a priori in one piece with the applied geometry, that is to say also that one can

  get it from a solid material.

  Other details and advantages of the invention are described below using two embodiment examples

  preferred, illustrated by the figures below, among the-

  which: Figure 1 shows a top view of a table tennis racket according to the invention, Figure 2 shows the object of Figure 1 (on a larger scale) in section along the line

II-II,

  Figure 3 shows (on a larger scale) the object of Figure 1 in section along the line

III-III

  Figure 4 shows (on a larger scale) the object of Figure 1 in section along the line IV-IV, and Figure 5 shows another embodiment of a table tennis racket according to the invention , in an illustration according to the

figure 4.

  According to FIGS. 1 to 4, a table tennis racket 1 consists of a percussion blade 2 and

  a handle 3. The latter breaks down into a part

  front handle tie 3a and rear or remaining handle part 3b. The front handle part 3a is further formed in the conventional manner, precisely from an extension 4 of the percussion blade 2, on which on both sides of the handle shells are mounted

  undesirable way, which however here are consi-

  derive as handle appendages 5. The remaining handle part 3b also corresponds for its outline to a conventional handle, in any case it no longer needs

  to be multi-layered (formed from the extension

  of the percussion blade and the handle shells mounted on it) if such a handle part is desired for optical or aesthetic reasons, so that the front handle part 3a and the handle part

  rear 3b also appear as forming a whole

  corn. Functionally, however, it is no longer

  of a classic table tennis racket.

  As can be seen in the figures, in the area of the front handle part 3a in the direction of the longitudinal axis of the handle 3 is firmly anchored an aluminum tube 6, which extends from the rear side ( towards the end) of the rear handle part 3b, passing through a central passage 7 (passage

  longitudinal) of larger diameter than the tube 6. The

  annular terstice 8 formed between these elements is closed, at the beginning and at the end of the rear handle part 3b, using an elastic sealing ring 9 produced in

  rubber, which also contributes to the assem-

  wheat between the front handle part 3a and the rear handle part 3b. At the transition between the front handle part 3a and the rear handle part 3b, is

  furthermore, a separating layer 10 is provided.

  made of a cellular material. The table tennis racket 1 described gives a comfortable table tennis racket or bat which is

  place of itself, in case of high percussion frequency-

  quietly and securely in the hand of a player. Thanks to the breakdown of the handle 3 and to the connection of the two handle parts 3a, 3b together, remarkable shock absorption is obtained. It can thus be various stresses exerted on the percussion blade relative to the handle, which

  whether it's bending, twisting, or both.

  A still simplified embodiment emerges

  of Figure 5. According to this, the handle 3 'is reali-

  still in one piece, knowing that through it

  here is provided a longitudinal bore 7 which extends from the former

  end of the rear handle area 3b 'at its start. Inside the passage 7 there is again a (small) tube 6 which is firmly anchored in the front handle area 3a '. At the end of the rear handle zone 3b ′, the annular gap 8 is closed by means of a sealing ring 9. The latter in turn serves for damping and can vary in its structure

  and in its materials, that is to say be adapted to certain

some play properties.

LIST OF REFERENCE NUMBERS

  1 Table tennis racket 2 Percussion blade 3 Handle 3 'Handle 3a Front handle part 3a' Front handle part 3b Rear handle part 3b 'Rear handle part 4 Extension Handle appendage 6 Tube 7 Drilling (longitudinal) 8 Annular gap 9 Sealing ring Separation layer

Claims (8)

  1. Table tennis racket consisting of a percussion blade and a handle, the handle if necessary consisting of a handle-shaped extension of the percussion blade and handle shells, mounted on it. undissociable, characterized   by the fact that the handle (3 ') has a central bore   tral (7) which follows its longitudinal axis, drilling going from   rear side of the handle (3 ') up to the poetic area   front (3a '), in that concentrically in this per-   hole (7), as a core, a tube (6) of small diameter is inserted and anchored in the front handle area (3a '), and in that the annular gap (8) formed between the passage ( 7) and the tube (6) is closed on the rear face of the handle (3 ') using a sealing ring (9) elastic.   2. Table tennis racket consisting of a percussion blade and a handle, characterized in that the handle (3) is subdivided into a front part (3a), having handle appendages (5) mounted on two sides of the percussion blade (2), and a rear part (3b) making the rest of the handle, in   that in the direction of the longitudinal axis of the poi-   A tube (6) is anchored in the front part (3a) of the handle (3), in that the rear part (3b) of the handle (3) has a longitudinal bore (7) of a   larger diameter than the tube (6), in that the inter-   annular stice (8), formed between the tube (6) and the per-   longitudinal grip (7) of the rear handle part (3b), is closed at the beginning and at the end of the part   rear handle (3b), using a sealing ring   elasticity (9) and in that a layer of separation   tion (10), made of a material capable of being compressed and twisted, is provided at the transition between the front part and the rear handle part (3a, 3b),   3. Table tennis racket as claimed   tion 1 or 2, characterized in that the tube (6) is made of a material resistant to bending, such as   aluminum, titanium, fiber (fabric) bone, or the like.   4. Table tennis racket as claimed   tion 1 or 2, characterized in that the ring   seal (9) is multi-layered and consists of killed from different materials.   5. Table tennis racket as claimed   tion 4, characterized in that, as material for the elastic seal (9), is chosen from   rubber and / or synthetic material.   6. Table tennis racket as claimed   tion 2, characterized in that, as material for the separating layer (10), is chosen from the   synthetic material, in particular in a honeycomb form lar.   7. Table tennis racket as claimed   tion 2, characterized in that, as material for the separating layer (10), is chosen leather, including including artificial leather.   8. Table tennis racket as claimed   tion 2, characterized in that, as a material   for the separation layer (10), cork is chosen.