CN219646672U - Controllable composite energy edge-protection table tennis board - Google Patents

Abstract

The utility model discloses a controllable compound energy edge protection table tennis bat which comprises a bat surface, a handle part and a drawstring fastening device, wherein the bat surface comprises a bat surface main body and a bat surface handle head integrally connected with the bat surface main body, the handle part comprises a lower handle, a bat surface handle part and an upper handle, the drawstring fastening device comprises a drawstring strip capable of being sheathed on the outer ring of the bat surface main body in an adapting way, drawstring connectors arranged at two ends of the drawstring, and drawstring fastening screws and drawstring fastening adjustment locking nuts which are mutually matched and connected. According to the tightening and pulling strap fastening device for the ball board, the tightening and pulling strap is fastened and adjusted through the small hole at the tail end of the handle, the tightening and pulling strap is driven to be tightened up and down by the adjusting spanner, the outer ring of the main body of the board is extruded on two sides to generate centripetal force, the edge of the ball board is enabled to recover stress, the performance of the edge of the ball board is enabled to be converged with the center of the ball board, and the overall function of the ball board is improved.

Description

Controllable composite energy edge-protection table tennis board

Technical Field

The utility model relates to the technical field of sports equipment, in particular to a controllable composite energy edge-protecting table tennis board.

Background

Because of the physical characteristics, the elasticity of the edge (non-sweet zone) of the common table tennis board is obviously weaker than that of the central zone (sweet zone) of the table tennis board (see the sweet zone indicated by A in the attached figure 1), and the uneven elasticity of the table tennis board causes low grasping property of the batting by the edge of the table tennis board in the competition, thus being extremely easy for users to lose score due to errors and affecting the batting performance.

In order to solve the above problem, the fastening devices can be installed on the left side and the right side of the neck of the sphere plate in an attempt, and the specific scheme adopted initially is as follows: tightening the tightening strap a on the outer Zhou Hu edge of the ball plate allows the tightening strap to be directly tightened by the nut b on the neck of the handle, creating a pipe clamping action (see fig. 2). The scheme is simple in structure and convenient to manufacture and install, but the requirement of accurate size of the fastening device cannot be met due to the limited size of the neck of the handle; moreover, the acting force generated by the scheme is two-sided extrusion, so that the tensioning effect of only two sides is good, and the tensioning belt is slightly poor in effect due to uneven stress on the head part in parallel with the plate head.

Therefore, a controllable re-energy edge protection table tennis bat with a novel structure needs to be researched so as to further optimize the scheme.

Disclosure of Invention

In view of the above, the utility model provides a controllable re-energy edge protection table tennis board, which has the following specific technical scheme:

the utility model provides a controllable compound can safe edge table tennis bat, includes ball face, handle portion, drawstring fastener, the ball face include the face main part and with face handle head that face main part is connected in an organic whole, handle portion includes lower handle, face handle portion and upper handle, drawstring fastener includes can adapt the ring cover in the drawstring of face main part outer lane, locates the drawstring connector at drawstring both ends and the drawstring fastening screw, the drawstring fastening adjustment of mutually supporting connection lock nut; the outer contour of the plate surface handle part is consistent with that of the lower handle and the upper handle, and the plate surface handle part is correspondingly adhered and fixed on the opposite surface of the lower handle holding surface; the middle of the panel handle part is provided with a panel handle part accommodating area for accommodating the panel handle head, the pull strip connector and part of the pull strip, the middle of one side of the panel handle part accommodating area, which is close to the tail end of the lower handle, is connected with a panel handle part limiting groove extending towards the tail end direction, the other side of the panel handle part limiting groove is connected with a panel handle tail adjusting hole which is arranged at the tail end of the panel handle part, and an adjusting spanner which is matched with the pull strip fastening adjusting locking nut can be inserted into the panel handle tail adjusting hole; the head part of the drawstring fastening screw is connected with the two drawstring connectors together, and the tail part of the drawstring fastening screw extends into the plate handle part limiting groove; the tail part of the pull belt fastening and adjusting opposite lock nut also extends into the limit groove of the plate surface handle part and is matched with the pull belt fastening screw to realize threaded connection; the ball face between the lower handle, the upper handle and the ball face between the lower handle and the upper handle is connected through a first jointly penetrating locking screw, the first locking screw is located at the head position of the whole handle, and the tail of the lower handle and the tail of the upper handle are connected through a second jointly penetrating locking screw.

By adopting the technical scheme, the tightening device of the pull belt tightens the pull belt up and down (head and tail) of the ball board, the adjusting spanner tightens the pull belt to tighten the adjusting locking nut through the small hole at the tail end of the handle, the pull belt strips are driven to tighten up and down, and the two sides of the pull belt strips are extruded to the outer ring of the main body of the board to generate centripetal force, so that the edge of the ball board is stressed back.

The controllable compound energy edge-protecting table tennis bat can effectively recover the stress of the edge (non-sweet zone) of the bat, so that the stress is converged with the performance of the center (sweet zone) of the bat.

Preferably, the joints of the lower handle, the head of the upper handle, and the panel main body and the panel handle head are respectively provided with a first connecting hole, the first connecting holes correspond to each other in upper and lower positions, and the first locking screws sequentially penetrate through the first connecting holes on the lower handle, the panel and the upper handle to connect the lower handle, the panel and the upper handle together.

Preferably, the lower handle, the upper handle and the ball panel are respectively provided with two first connecting holes.

Preferably, the panel handle head is adhered and fixed on the lower handle corresponding to the lower part of the accommodating area.

Preferably, the two sides of the connection part of the panel handle part limit groove and the ball panel handle tail adjusting hole are respectively provided with an upper handle connecting hole and a lower handle connecting hole, the positions of the lower handle and the upper handle corresponding to the two upper handle connecting holes and the lower handle connecting holes are also provided with a second connecting hole, and the second locking screw sequentially penetrates through the second connecting hole, the upper handle connecting hole and the lower handle connecting hole of the lower handle and the second connecting hole of the upper handle to connect the lower handle and the upper handle together.

Preferably, the head of the draw strap fastening adjusting locking nut is clamped between the two locking screws II.

Preferably, the opposite surface of the holding surface of the upper handle is correspondingly provided with a countersink for accommodating the tie strap connector, the tie strap fastening screw, the tie strap fastening adjusting locking nut and part of the tie strap.

Preferably, the first round hole matched with the first round hole of the head part of the drawstring fastening screw is formed in the drawstring connecting head, and the drawstring adjusting screw passes through the middle first round hole and the second round holes on two sides and is screwed and fixed by corresponding nuts, so that the integral connection of the two drawstring connecting heads and the drawstring fastening screw is realized.

Preferably, each of the tie strap connectors is provided with a plurality of the round holes two along the axial direction thereof.

Preferably, the pull strap in the pull strap fastening device is composed of a stainless steel pull strap and a heat shrinkage tube sleeved in the middle of the stainless steel pull strap, the length of the heat shrinkage tube is based on the condition that the outer ring of the plate surface main body is completely sleeved with the heat shrinkage tube, and two ends of the stainless steel pull strap are respectively integrally connected with the pull strap connector made of stainless steel.

Preferably, the pull tape strip in the pull tape fastening device is a carbon fiber pull tape, and two ends of the carbon fiber pull tape are respectively connected with the pull tape strip connector made of stainless steel through rivet anchors.

By adopting the technical scheme, compared with the prior art, the utility model has the following beneficial effects:

1. the pull strip in the pull strip fastening device can protect the edge of the table tennis bat and prevent collision.

2. When the ball striking point is positioned at the racket corner, the rubber sleeve and the support are provided by the drawstring fastening device, so that the sponge can be prevented from being covered reversely, and the upper stage rate is improved.

3. The tension belt is fastened by the tension belt fastening screw and the tension belt fastening adjusting pair lock nut which are arranged in the handle of the ball plate, so that the tension belt is acted on the outer ring of the ball plate to generate centripetal force (the head of the ball plate is pulled and the two sides of the ball plate are contracted and extruded), the stress of the edge of the ball plate is comprehensively recovered, the performance of the edge of the ball plate tends to the central area of the ball plate, the overall function of the ball plate is improved, the effect is good, and the technical aim is achieved.

4. Through the technical means, the consistency of the racket performance and the mastering performance of the batting are improved, the scoring rate is improved, opponents are overcome, and good results are obtained.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are only embodiments of the present utility model, and other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of a conventional table tennis board structure.

Fig. 2 is a schematic view of a table tennis ball panel structure with a fastening device mounted to the neck of the ball panel.

Fig. 3 is a schematic structural view of a controllable composite energy edge-protecting table tennis bat of the present utility model.

Fig. 4a is an external front view of a controllable re-energized edge-protecting table tennis bat of the present utility model.

Fig. 4b is an external isometric view of a controllable re-energized edge-protecting table tennis bat of the present utility model.

Fig. 5a is a front view of a ball grid array according to the present utility model.

Fig. 5b-1 is a front view of the handle portion of the deck of the present utility model.

Fig. 5b-2 is an isometric view of the handle portion of the panel of the present utility model.

Fig. 5b-3 are front views of the lower handle of the present utility model.

Fig. 5b-4 are isometric views of the lower handle of the present utility model.

Fig. 5b-5 are front views of the upper handle of the present utility model.

Fig. 5b-6 are isometric views of the upper handle of the present utility model.

Fig. 5c-1 is a block diagram of one embodiment of a drawstring fastening device according to the present utility model.

FIG. 5c-2 is a combination of stainless steel strip and heat shrink tubing in the embodiment of FIG. 5 c-1.

Fig. 5c-3 are block diagrams of another embodiment of a drawstring fastening device according to the present utility model.

Fig. 5c-4 is a schematic view of the rivet and strap attachment of the embodiment of fig. 5 c-3.

Fig. 6 is an exploded view of the structure of the present utility model.

In the figure: the novel steel wire rope riveting device comprises a 1-ball plate surface, a 2-handle part, a 3-pull belt fastening device, a 4-plate surface main body, a 5-plate surface handle head, a 6-lower handle, a 7-plate surface handle part, an 8-upper handle, a 9-pull belt, a 10-pull belt connector, an 11-pull belt fastening screw, a 12-pull belt fastening adjustment locking nut, a 13-plate surface handle part accommodating area, a 14-plate surface handle part limiting groove, a 15-ball plate handle tail adjusting hole, a 16-adjusting spanner, a 17-locking screw I, a 18-locking screw II, a 19-connecting hole I, a 20-connecting hole II, a 21-upper handle connector, a 21-lower handle connector, a 22-countersink, a 23-round hole I, a 24-round hole II, a 25-pull belt adjusting screw, a 26-nut, a 27-stainless steel strip, a 28-heat shrinkage tube, a 29-carbon fiber pull belt, a 30-rivet piece and a 31-carbon fiber pull belt connector.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

Examples:

as shown in fig. 3 and fig. 4a and 4b, the controllable re-energy edge protection table tennis bat of the utility model comprises a bat surface 1, a handle part 2 and a drawstring fastening device 3.

Referring to fig. 5a, the ball board 1 includes a board main body 4 and a board handle head 5 integrally connected with the board main body 4.

Referring to fig. 5b-1 to 5b-6, the handle portion 2 includes a lower handle 6, a panel handle portion 7, and an upper handle 8.

The outer contour of the plate surface handle part 7 is consistent with that of the lower handle 6 and the upper handle 8, and the plate surface handle part 7 is correspondingly adhered and fixed on the opposite surface of the lower handle holding surface; the middle of the panel handle part 7 is provided with a panel handle part accommodating area 13 for accommodating the panel handle head 5, the pull strip connector 10 and part of the pull strip 9, the middle part of one side of the panel handle part accommodating area 13, which is close to the tail end of the lower handle 6, is connected with a panel handle part limiting groove 14 extending towards the tail end direction, the other side of the panel handle part limiting groove 14 is connected with a panel handle tail adjusting hole 15 which is arranged at the tail end of the panel handle part 7, an adjusting spanner 16 which is matched with the pull strip fastening adjusting locking nut 12 can be inserted into the panel handle tail adjusting hole 15, and the adjusting spanner 16 is generally an internal hexagonal spanner.

The drawstring fastening device 3 comprises a drawstring 9 which can be sleeved on the outer ring of the plate main body 4 in an adapting mode, drawstring connectors 10 arranged at two ends of the drawstring 9, and drawstring fastening screws 11 and drawstring fastening adjusting locking nuts 12 which are mutually matched and connected. The head of the drawstring fastening screw 11 is connected with the two drawstring connectors 10 together, and the tail extends into the limit groove 14 of the panel handle part; the tail part of the draw tape fastening and adjusting opposite lock nut 12 also extends into the limit groove 14 of the plate surface handle part and is matched with the draw tape fastening screw 11 to realize threaded connection.

Specifically, the strap connector 10 is provided with a second round hole 24 matched with the first round hole 23 at the head of the strap fastening screw 11, and the strap adjusting screw 25 passes through the first round hole 23 in the middle and the second round holes 24 at two sides and is screwed and fixed by corresponding nuts 26, so that the two strap connectors 10 are integrally connected with the strap fastening screw 11.

Furthermore, in order to increase the selectivity, a plurality of round holes 24 may be provided in each of the fastener tape tabs 10 in the axial direction thereof. The second round hole 24 plays a role in connecting the pull belt with the adjusting hole.

The lower handle 6, the upper handle 8 and the ball panel surface 1 arranged between the lower handle and the upper handle are connected through a first locking screw 17 which passes through the ball panel surface and the upper handle, and the first locking screw 17 is positioned at the head part of the whole handle.

Specifically, referring to fig. 6, the heads of the lower handle 6 and the upper handle 8, and the connection part between the panel main body 4 and the panel handle head 5 are respectively provided with a first connecting hole 19, the first connecting holes 19 are corresponding to each other in upper and lower positions, and the first pair of locking screws 17 sequentially penetrate through the first connecting holes 19 on the lower handle 6, the panel 1 and the upper handle 8 to connect the lower handle 6, the panel 1 and the upper handle 8 together.

In order to ensure the connection stability, two connecting holes 19 are respectively provided on the lower handle 6, the upper handle 8 and the ball panel surface 1. Meanwhile, the first connecting hole 19 on the upper handle 8 is designed as a counter bore.

In order to ensure that the ball panel surface 1 and the lower handle 6 can be tightly connected, the panel surface handle head 5 can be further adhered and fixed on the lower handle 6 corresponding to the lower part of the accommodating area.

The tail parts of the lower handle 6 and the upper handle 8 are connected through a common through opposite locking screw two 18.

Specifically, referring to fig. 6, two sides of the joint between the panel handle portion limiting groove 14 and the ball panel handle tail adjusting hole 15 are respectively provided with an upper handle connecting hole 21 and a lower handle connecting hole 21, and two connecting holes 20 are also formed in the positions of the lower handle 6 and the upper handle 8 corresponding to the two upper handle connecting holes 21, and the locking screw 18 sequentially penetrates through the two connecting holes 20 of the lower handle 6, the upper handle connecting hole 21 and the two connecting holes 20 of the upper handle 8 to connect the lower handle 6 and the upper handle 8 together. The second connecting hole 20 on the upper handle 8 is designed as a counter bore.

At the same time, the head of the pull belt fastening adjusting locking nut 12 is clamped between the two locking screws II 18 and tightly abuts against one side, close to the tail end of the handle, of the two upper and lower handle connecting ports 21, and the tail of the pull belt fastening adjusting locking nut 12 extends into the plate surface handle limiting groove 14. Two locking screws 18 can be used to tighten the drawstring to limit axial movement of the locking nut 12.

The first and second locking screws 17 and 18 are also preferably hexagon-shaped locking screws.

In a further embodiment, the opposite surface of the gripping surface of the upper handle is correspondingly provided with a countersink 22 for accommodating the tie strap connector 10, the tie strap fastening screw 11, the tie strap fastening adjustment counter lock nut 12 and the upper part of the tie strap 9, wherein the countersink 22 is generally 2mm deep, so as to ensure the matching combination of the structures of the whole handle part 2.

The drawstring fastening device provided by the utility model is designed with the following two structures:

one embodiment is shown in fig. 5c-1 and 5c-2, wherein the pull strap 9 in the pull strap fastening device 3 is composed of a stainless steel pull strap 27 with the thickness of 0.3mm and a heat shrinkage tube 28 sleeved in the middle of the stainless steel pull strap 27, the length of the heat shrinkage tube 28 is based on the condition that the outer ring of the plate surface main body 4 is completely sleeved with the heat shrinkage tube 28, and two ends of the stainless steel pull strap 27 are respectively and integrally connected with a pull strap connector 10 made of stainless steel.

Another embodiment is shown in fig. 5c-3 and 5c-4, wherein the pull strap 9 in the pull strap fastening device 3 is a carbon fiber pull strap 29, and two ends of the carbon fiber pull strap 29 are respectively connected with a stainless steel carbon fiber pull strap connector 31 through a rivet piece 30 in an anchoring manner as the pull strap connector 10. The carbon fiber draw tape joint 31 is typically a 0.5mm post stainless steel sheet.

The assembly and connection operations of the present utility model are as follows:

bonding the plate handle part 7 inside the lower handle 6 (namely, on the opposite surface of the holding surface of the lower handle) to form a whole;

(II) optionally, the panel handle head 5 and the lower handle 6 are also adhered into a whole;

(III) reinforcing the support surface of the panel handle portion 7 which is in contact with the fastener tape 9;

fourthly, connecting the tie strap connectors 10 at the two ends of the tie strap 9 with the tie strap fastening screws 11 through the tie strap adjusting screws 25 and the corresponding nuts 26, and connecting the tie strap fastening screws 11 with the tie strap fastening adjustment locking nuts 12 in a matching way;

(V) sleeving the assembled drawstring fastening device 3 on the outer ring of the ball panel 1, putting the drawstring fastening device into a panel handle part accommodating area 13 and a panel handle part limiting groove 14 of a combination body of the lower handle 6 and the panel handle part 7, penetrating a nut end in a first locking screw 17 through a first connecting hole 19 on the lower handle 6, the ball panel 1 and the upper handle 8, penetrating a nut end in a second locking screw 18 through a second connecting hole 20 on the lower handle 6, an upper handle connecting hole 21 and a lower handle connecting hole 20 on the upper handle 8, and clamping the head part of the drawstring fastening adjusting locking nut 12 between the two locking screws 18;

checking and adjusting tightness of the joints of the parts, and covering the upper handle 8 after the joints are suitable, screwing the screw rod end in the first locking screw 17 and the screw rod end in the second locking screw 18, and respectively matching and fastening with the nut end in the first locking screw 17 and the nut end in the second locking screw 18;

seventhly, as the draw tape fastening adjustment locking nut 12 is limited by the two locking screws II 18 and can only rotate radially and cannot move axially, the draw tape fastening adjustment locking nut 12 can drive the draw tape 9 to realize tightness;

eighth, the tightness of the pull strap 9 is realized by the tail adjusting hole 15 of the ball plate handle at the tail end and the pull strap is turned by a 2.5mm internal hexagonal wrench;

and (nine) the user can adjust the tightness of the pull strap 9 according to the needs, and can adjust and loosen the pull strap 9 when the racket is not used, and the ball panel can be ensured to maintain stress for a long time after the pull strap 9 is fastened and loosened again.

In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. The controllable composite energy edge protection table tennis bat is characterized by comprising a ball surface, a handle part and a drawstring fastening device, wherein the ball surface comprises a surface main body and a surface handle head integrally connected with the surface main body, the handle part comprises a lower handle, a surface handle part and an upper handle, and the drawstring fastening device comprises a drawstring capable of being sleeved on the outer ring of the surface main body in an adaptive manner, drawstring connectors arranged at two ends of the drawstring, and drawstring fastening screws and drawstring fastening adjustment locking nuts which are mutually matched and connected; the outer contour of the plate surface handle part is consistent with that of the lower handle and the upper handle, and the plate surface handle part is correspondingly adhered and fixed on the opposite surface of the lower handle holding surface; the middle of the panel handle part is provided with a panel handle part accommodating area for accommodating the panel handle head, the pull strip connector and part of the pull strip, the middle of one side of the panel handle part accommodating area, which is close to the tail end of the lower handle, is connected with a panel handle part limiting groove extending towards the tail end direction, the other side of the panel handle part limiting groove is connected with a panel handle tail adjusting hole which is arranged at the tail end of the panel handle part, and an adjusting spanner which is matched with the pull strip fastening adjusting locking nut can be inserted into the panel handle tail adjusting hole; the head part of the drawstring fastening screw is connected with the two drawstring connectors together, and the tail part of the drawstring fastening screw extends into the plate handle part limiting groove; the tail part of the pull belt fastening and adjusting opposite lock nut also extends into the limit groove of the plate surface handle part and is matched with the pull belt fastening screw to realize threaded connection; the ball face between the lower handle, the upper handle and the ball face between the lower handle and the upper handle is connected through a first jointly penetrating locking screw, the first locking screw is located at the head position of the whole handle, and the tail of the lower handle and the tail of the upper handle are connected through a second jointly penetrating locking screw.

2. The controllable and re-usable edge-protecting table tennis bat of claim 1, wherein the lower handle, the head of the upper handle, and the joint of the bat main body and the bat handle head are provided with first connecting holes, the first connecting holes correspond to each other in upper and lower positions, and the first locking screws sequentially pass through the first connecting holes on the lower handle, the bat surface and the upper handle to connect the lower handle, the bat surface and the upper handle together.

3. A controllable re-usable edge protection table tennis bat as claimed in claim 1 or claim 2, wherein said deck handle head is adhesively secured to said lower handle corresponding to the underside of said receiving area.

4. The controllable and re-energy edge-protecting table tennis board according to claim 1, wherein an upper handle connecting port and a lower handle connecting port are respectively arranged on two sides of a joint of the board handle part limiting groove and the ball handle tail adjusting hole, a second connecting hole is also arranged on the lower handle and the upper handle at positions corresponding to the two upper handle connecting ports and the lower handle connecting ports, and the second locking screw sequentially penetrates through the second connecting hole on the lower handle, the upper handle connecting port and the lower handle connecting port and the second connecting hole on the upper handle to connect the lower handle and the upper handle together.

5. The controllable re-energizing edge-protecting table tennis bat of claim 4, wherein the head of the draw-strap tightening adjustment locking nut is clamped between two of the locking screws.

6. The controllable re-energizing edge-protecting table tennis bat of claim 1, wherein the opposite surface of the upper handle gripping surface is correspondingly provided with countersinks for receiving the strap connector, the strap fastening screw, the strap fastening adjustment counter lock nut, and a portion of the strap.

7. The controllable re-energy edge protection table tennis bat according to claim 1, wherein a round hole II matched with the round hole I of the head part of the drawstring fastening screw is formed on the drawstring connecting head, and the drawstring adjusting screw is screwed and fixed by corresponding nuts after passing through the round hole I in the middle and the round holes II on two sides, so that the integral connection of the two drawstring connecting heads and the drawstring fastening screw is realized.

8. A controllable re-entrant edge table tennis bat as claimed in claim 7, wherein each said strap connector has a plurality of said second apertures along an axial direction thereof.

9. The controllable re-energizing edge-protecting table tennis bat of claim 7, wherein the pull strip of the pull strip fastening device is composed of a stainless steel pull strip and a heat shrinkage tube sleeved in the middle of the stainless steel pull strip, the length of the heat shrinkage tube is based on the condition that the outer ring of the main body of the table surface is completely sleeved, and two ends of the stainless steel pull strip are respectively integrally connected with the pull strip connector made of stainless steel.

10. The controllable re-energizing edge-protecting table tennis bat of claim 7, wherein the pull tape in the pull tape fastening device is a carbon fiber pull tape, and both ends of the carbon fiber pull tape are respectively connected with a carbon fiber pull tape joint made of stainless steel through rivet anchors as the pull tape joint.