TWI820685B - Device that can generate shock wave superposition - Google Patents

Abstract

A device that can generate shock wave superposition, which is used for a racket and includes a racket frame and racket strings with a plurality of warp threads and a plurality of weft threads that are woven together to form a string bed, including: at least a first body, which is a hard medium and is provided on one or both sides of the racket. A protruding wall is provided on one side, and a first wire trough with an opening at the upper end is formed on the inside of the wall on one side or in the center of the wall on both sides. A groove is provided at the bottom of the first wire trough; at least one soft medium, It is provided in the first cable groove of the first body and provides a fixed racket string; the lower end of the first body is provided with at least a second body that is a hard medium and has at least one soft medium; through the string bed of the racket When hitting the ball, it can generate a return shock wave and superimpose the shock waves to increase the power of the ball.

Description

Device that can generate shock wave superposition

The present invention relates to a device, in particular to a shock wave superposition device capable of generating a return shock wave when the string bed of a racket hits a ball.

According to common practice, a racket is provided for hitting the ball. The inside of the frame of the racket is woven into a grid-like string bed through racket strings arranged in warp and weft. When the ball hits the string bed, a strong cracking shock wave will be generated on the string bed. , the shock wave will be transmitted in all directions. When it reaches the racket frame, it will easily deform and produce a huge torque when hitting the ball, which will cause the racket frame to break. The reason is that the conventional racket cannot produce a return ball. The structure of physical strength greatly reduces its practicality. This is where those skilled in the art and consumers are eager to break through.

In order to solve the above-mentioned shortcomings of the prior art, the main purpose of the present invention is to provide a device that can generate shock wave superposition, using a first body with a wall, a first wire trough and a groove, and a second body oppositely provided with The wall, the second trunking and the groove are respectively provided with soft media, or a first gusset plate and a second gusset plate are respectively provided on the first body, or on the second body, or on the first body and the second body. The second body is provided with a soft medium outside the coating, in order to overcome the difficulties in the prior art.

The secondary purpose of the present invention is to provide a device that can generate shock wave superimposition. The racket line of the racket frame is formed to provide a spherical impact area (i.e., the shock wave generating area). When the shock wave hits the racket frame, the first body or the first body is hit first. The node formed by the second body or the first gusset plate or the second gusset plate returns the shock wave, shortening the shock wave return propagation and increasing the frequency to produce the effect of shock wave superposition and increase the power of the returning ball.

Another object of the present invention is to provide a device that can generate shock wave superposition, effectively improve the control of racket frame deformation and racket frame torsion, and inhibit racket frame breakage.

The problem to be solved by the present invention is to provide a racket for hitting the ball according to common practice. The inside of the frame of the racket is woven into a grid-like string bed through racket strings arranged in warp and weft. When the ball hits the string bed, A strong cracking shock wave will be generated on the string bed. This shock wave will be transmitted in all directions. When it is transmitted to the racket frame, it will easily deform and produce a huge torque when hitting the ball, which will cause the racket frame to break, making it useless in terms of practicality. Big discount.

Technical means to solve the problem, in order to achieve the above purpose, the present invention provides a device that can generate shock wave superposition, which is used in a racket and includes a racket frame and a racket string with a plurality of mutually braided warp threads and a plurality of weft threads forming a string bed, which is characterized by: It includes: at least a first body, which is a hard medium and is provided with a protruding wall on one or both sides. A first body with an opening at the upper end is formed on the inside of the wall on one side or in the center of the walls on both sides. Wire trough, the bottom of the first wire trough is provided with a groove; the arrangement of the one side wall and the two side walls is the entire section or the middle section of the first body or the offset front section and the rear section or the offset rear section and the front section; at least one The soft medium is disposed in the first wire groove of the first body and provides a fixed string.

Among them, the lower end of the first body of the present invention is provided with a second body in the reverse direction and is a hard medium. A protruding wall is provided on one or both sides of the first body. A second wire trough with an opening at the lower end is formed in the center, and a groove is provided at the bottom of the second wire trough. The second wire trough is provided with the soft medium for fixing the string; the first body and the second body The angle between them can be adjusted from 0 degrees to plus or minus 180 degrees according to the shooting line; the arrangement of the one side wall and the two side walls is in the whole or middle section of the second body or in the offset front and rear sections or Dislocation of posterior and anterior segments.

Wherein, in the present invention, the second body system located opposite the lower end of the first body can be integrally formed.

Wherein, according to the present invention, the bottom of the first body is provided with a first gusset plate including but not limited to a circular shape.

Wherein, the bottom of the second body of the present invention is provided with a second gusset plate including but not limited to a circular shape, and the second gusset plate and the first gusset plate are not integrally formed.

Wherein, in the present invention, the four corners of the first gusset plate of the first body are provided with missing corners.

Wherein, in the present invention, the four corners of the first gusset plate of the first body are provided with notched corners, and the four corners of the second gusset plate of the second body are provided with notched corners.

Among them, in the present invention, at least one medium that provides mutual fixation is provided between the first body and the second body or the first gusset plate and the second gusset plate. The medium includes but is not limited to the planar medium. Soft media or glue, cloth, leather, and granular gel can be used to increase friction and achieve the function of suppressing shock waves generated by vertical and horizontal warp and weft lines to isolate each other and avoid mutual interference.

Among them, in the present invention, the first gusset plate and the second gusset plate together with the first body and the second body side and top surfaces are respectively provided with external soft media connected to the soft medium, or the first gusset plate and The second gusset plate is covered with at least one outer soft medium, or both sides of the first gusset plate and the second gusset plate are covered with at least one outer soft medium.

Technical means to solve the problem, in order to achieve the above purpose, the present invention provides a device that can generate shock wave superposition, which is used in a racket and includes a racket frame and a racket string with a plurality of mutually braided warp threads and a plurality of weft threads forming a string bed, which is characterized by: Including: at least one first body, which is square Or it is rectangular in shape and is a hard medium, and protrudes from the upper ends of both ends thereof with first slotted holes for string threading; at least one soft medium is in the shape of a ring and is provided on the third hole of the first body. One-line slotted and provided with fixed string.

Among them, the lower end of the first body of the present invention is provided with at least one second body that is square or rectangular and is a hard medium. The lower ends of both sides of the second body are respectively protruded with a second body that provides a string threading sleeve. The second string slot hole is provided with a ring and provides the soft medium for fixing the string; the angle between the first body and the second body can be adjusted from 0 degrees to plus or minus 180 degrees according to the staggering of the string. Ten degrees.

Comparing the effects of the prior art, the present invention utilizes the first body with the wall, the first wire trough and the groove and the second body oppositely provided with the wall, the second wire trough and the groove. slot, and the soft medium is respectively provided thereon, or the first gusset plate and the second gusset plate are respectively provided on the first body, or the second body, or the first body and the second The main body is provided with a soft medium covering the outside; furthermore, the racket line of the racket frame is formed to provide a spherical impact area (i.e., the shock wave generating area), and the first body is hit first when the shock wave hits the racket frame. Or the node formed by the second body or the first gusset plate or the second gusset plate can return shock waves, shortening the shock wave return propagation and increasing the frequency to produce a shock wave superposition effect and increase the force of hitting the sphere. ; Effectively improve the control of the deformation of the racket frame and the torque of the racket frame, and suppress the breakage of the racket frame, which will greatly expand the utilization of the industry and be novel and progressive.

1: The first ontology

10:Wall

11:First trunking

110: Groove

1100: First line slot hole

12:First node board

121: missing corner

13: medium medium

2:Second body

20:Wall

21:Second trunking

210: Groove

2100: Second line slot hole

22:Second gusset plate

221: missing corner

3:Soft media

31: External soft media

4: racket

41: Frame

42:shoot line

421:Longitude

422: Latitude

5: Sphere

The first figure is a three-dimensional exploded view of the first body of the present invention.

The second figure is a three-dimensional assembled view of the first body of the present invention.

The third figure is a combined cross-sectional view of the first body of the present invention.

The fourth figure is a cross-sectional view of the first body of the present invention with a shooting string.

The fifth figure is a perspective view of a second body on the lower end of the first body of the present invention.

Figure 6: is an exploded three-dimensional view of the first body provided with the first gusset plate of the present invention.

The seventh figure is a perspective view of the second body provided with the sixth figure of the present invention.

Figure 8: is a three-dimensional view of Figure 7 of the present invention with a missing corner.

Figure 9: A three-dimensional view of the second body of the present invention provided with a second gusset plate and a missing corner.

Figure 10 is a three-dimensional exploded view of the first body provided with a first gusset plate and the second body provided with a second gusset plate of the present invention, with a medium between them.

Figure 11: is a combined cross-sectional view of Figure 10 of the present invention.

Figure 12: is a diagram of an embodiment of the present invention in which the first body and the second body are interlaced at an angle of 90 degrees.

Figure 13: is a diagram of an embodiment of the present invention in which the first body and the second body are interlaced at an angle of 45 degrees.

Figure 14: is a diagram of an embodiment of the present invention in which the first body and the second body are interlaced at an angle of 45 degrees in another direction.

Figure 15: shows an embodiment of the string bed provided in a racket according to the present invention.

Figure 16: shows an embodiment of the racket of the present invention in which the string bed hits the ball body and generates shock wave superposition.

Figure 17: It is a diagram (1) of an embodiment of the present invention in which the first body and the first node board or the second body and the second node board are provided with an external soft medium.

Figure 18: A diagram (2) of an embodiment of the present invention in which the first body and the first node board or the second body and the second node board are provided with an external soft medium.

Figure 19: A diagram (3) of an embodiment of the present invention in which the first body and the first gusset plate or the second body and the second gusset plate are provided with an external soft medium.

Figure 20: is an embodiment diagram of one of the side walls of the first and second bodies of the present invention arranged in the entire section of the first and second bodies.

Figure 21, Figure 22, and Figure 23: show the arrangement of the two side walls of the first and second bodies of the present invention in the middle section of the first and second bodies, the offset front section and the rear section, the offset rear section and Embodiment diagram of the previous section.

Figure 24: is a three-dimensional assembly view of another embodiment of the first body of the present invention.

Figure 25: is a perspective view of another embodiment of the first body of the present invention with a second body reversed at the lower end.

The present invention is described in detail below with reference to the accompanying drawings and in the form of embodiments. The drawings used in the text are only intended to illustrate and assist the description, and may not necessarily represent the true proportions and accuracy of the present invention after its implementation. configuration, the proportions and configuration relationships of the attached drawings should not limit the patent scope of the present invention in actual implementation, and are explained in advance.

Please refer to Figure 1, Figure 2, Figure 3, Figure 4, Figure 5 and Figure 6, Figure 7, Figure 8, Figure 9 and Figure 10, Figure 11 and Figure 12 Figure 13, Figure 14 and Figure 15, Figure 16 and Figure 17, Figure 18, Figure 19 and Figure 20, Figure 21, Figure 2 Figures 12, 23, 24, and 25 are exploded three-dimensional views of the first body of the present invention, a three-dimensional assembled view of the first body of the present invention, and the first body of the present invention. The combined cross-sectional view of the main body, the cross-sectional view of the first body of the present invention with a shooting line inside, the three-dimensional view of the second body on the opposite side of the lower end of the first body of the present invention, and the three-dimensional exploded view of the first body of the present invention with the first gusset plate Figure, the sixth figure of the present invention is a perspective view of the second body, the seventh figure of the present invention is a perspective view of a missing corner, the second body of the present invention is a perspective view of a second gusset plate and a missing corner, and the first body of the present invention is provided with a perspective view A three-dimensional exploded view of a first gusset plate and a second body with a second gusset plate and a medium between them, the combined cross-sectional view of Figure 10 of the present invention, and the staggered angle of the first body and the second body of the present invention. ten degrees Figures of an embodiment of the present invention, where the first body and the second body of the present invention are interlaced at an angle of 45 degrees, Figures of an embodiment where the first body and the second body of the present invention are interlaced at an angle of 45 degrees in another direction, and An embodiment diagram of the string bed of the racket according to the present invention, an embodiment diagram of the string bed of the racket according to the present invention hitting the ball body and generating shock wave superposition, and the first body and the first gusset plate or the second body and the second node of the present invention. Figure 1 of an embodiment of a board equipped with an external soft medium. Figure 2 of an embodiment of the first body and the first node board or the second body and the second node board of the present invention provided with an external soft medium. Figure 1 of the first embodiment of the present invention. Figure (3) of an embodiment of the main body and the first gusset plate or the second body and the second gusset plate provided with an external soft medium and the arrangement of one side wall of the first and second bodies of the present invention on the entire section of the first and second bodies The embodiment diagram is an embodiment diagram of the two side walls of the first and second bodies of the present invention arranged in the middle section of the first and second bodies, the offset front section and the rear section, the offset rear section and the front section, and another embodiment of the first body of the invention. A three-dimensional combined view of the embodiments, and a three-dimensional view of another embodiment of the first body of the present invention with a second body reversed at the lower end. The shock wave superimposing device of the present invention is applied to a racket 4 and includes a racket frame 41 and The racket string 42 (as shown in Figures 15 and 16) having a plurality of warp threads 421 and a plurality of weft threads 422 braided together to form a string bed, in a preferred embodiment, includes at least a first body 1, at least a soft Medium 3.

The above-mentioned at least one first body is a hard medium and is provided with a protruding wall 10 on one or both sides thereof. The inner side of the wall 10 on one side or the center of the walls 10 on both sides forms a wall with an opening at the upper end. A first wire trough 11 is provided with a groove 110 at the bottom of the first wire trough 11; the one side wall 10 and the two side walls 10 are arranged in the entire section, middle section or offset front section of the first body 1 and the posterior segment or the dislocation of the posterior segment and the anterior segment (as shown in Figures 1, 2, 3, 4, 20, 21, 22, and 23) .

The aforementioned at least one soft medium 3 is provided in the first wire groove 11 of the first body 1 and provides a fixed shooting string 42 (as shown in the first, second, third and fourth figures).

Please refer to the fifth figure. The lower end of the first body 1 of the present invention is provided with a second body 2 on the opposite side and is a hard medium. A protruding wall 20 is provided on one or both sides of the first body 1. A second wire trough 21 with an opening at the lower end is formed on the inside of the wall 20 or in the center of the wall 20 on both sides. The second wire trough 21 is provided with a groove 210 at the bottom. The second wire trough 21 is provided with a wire 42 for fixing. The soft medium 3; the angle between the first body 1 and the second body 2 can be adjusted from 0 degrees to plus or minus 180 degrees according to the shooting line; the wall 20 on one side (as shown in Figure 20 (shown in Figure 21) and the two side walls 20 (shown in Figures 1 and 7) are arranged in the entire or middle section of the second body (shown in Figure 21) or in the offset front and rear sections (shown in Figure 21). As shown in Figure 22) or dislocated rear section and front section (as shown in Figure 23), the second wire trough 21 is provided with the soft medium 3 for fixing the shooting string 42, and the lower end of the first body 1 The second body 2 provided in the opposite direction can be formed in one piece.

Please refer to Figure 5, Figure 12, Figure 13, and Figure 14. The angle between the first body 1 and the second body 2 can be staggered and adjusted from 0 degrees to plus or minus according to the shooting line 42. One hundred and eighty degrees; in this embodiment, the angle can be adjusted appropriately according to the intersection angle of the shooting line 42; as shown in the fifth figure, the angle of the first body 1 and the second body 2 is ninety degrees. Forming a staggered cross shape can reduce wind resistance.

Please refer to Figure 6, Figure 7, Figure 10, Figure 11, Figure 8, and Figure 9. The bottom of the first body 1 is provided with a first gusset plate including but not limited to a circular shape. 12, or the bottom of the second body 2 is provided with a second gusset plate 22 including but not limited to a circular shape, and the second gusset plate 22 and the first gusset plate 12 are not integrally formed. (As shown in Figures 6, 7, 10, and 11); the four corners of the first gusset plate 12 of the first body 1 are provided with notches 121 to save material, and more importantly, reduce wind resistance during use. (As shown in the eighth figure); the four corners of the second gusset plate 22 of the second body 2 of the present invention are provided with notches 221 (as shown in the ninth figure).

Please refer to Figure 10 and Figure 11. According to the present invention, the first body 1 and the second body 2 or the first gusset plate 12 and the second gusset plate 22 are provided with mutual fixation. At least one medium 13. The medium 13 includes but is not limited to the soft medium 3 that is flat or can increase friction and achieve the function of suppressing the shock waves generated by the vertical and horizontal longitudes 421 and latitudes 422 to isolate each other and avoid mutual interference. The glue, cloth, leather and granular gel can fix the first body 1 and the second body 2 or the first gusset plate 12 and the second gusset plate 22 without separation, falling or displacement.

Please refer to Figure 17, Figure 18, and Figure 19. The first gusset plate 12 and the second gusset plate 22 together with the side and top of the first body 1 and the second body 2 of the present invention There are external soft media 31 connected to the soft media 3 respectively (as shown in Figure 17); or the first node plate 12 and the second node plate 22 of the present invention are covered with at least one external soft medium. Medium 31 (as shown in Figure 18); in the present invention, both sides of the first gusset plate 12 and the second gusset plate 22 are covered with at least one outer soft medium 31 (as shown in Figure 19).

Please refer to Figure 15 and Figure 16. The present invention can be implemented on any straight warp 421 or horizontal weft 422 string 42 on the string bed to control shock waves. When used, The first body 1; or the second body 2 are respectively provided on both sides of the string bed composed of the straight warp 421 and the horizontal weft 422 of the racket string 42 of the racket 4, and the racket string 42 is The warp threads 421 and the weft threads 422 are respectively sleeved on the first wire trough 11 of the first body 1 with the soft medium 3 and the second wire trough 21 of the second body 2 with the soft medium 3; The first body 1 or the second body 2 or the first body 1 or the second body 2 having the first gusset plate 12 or the second gusset plate 22 forms a sphere 5 impact area (i.e. Please refer to Figure 15 for the shock wave generation area); Please refer to Figure 16 for the area where the shock wave is generated. The present invention is installed on the racket 4 on the string bed, and can control the deformation of the racket frame 41 and the torsion of the racket frame 41 , suppressing the breakage of the racket frame 41 and causing the shock wave to hit this node (i.e. the first body 1 or the second body 2) first when hitting the racket frame 41, and then return the shock wave, so that the shock wave returns the time Shortened and increased in frequency to produce the effect of shock wave superposition, increasing the force of hitting the sphere 5, in which the sphere 5 hits the shock wave In the generated range area, the shock wave will go out from the impact point to the racket frame 41 or the shock wave generated by the node of the present invention; and when the shock wave encounters the node of the present invention or the racket frame 41, its shock wave will be echoed (such as the first (shown in Figure 16).

Please refer to Figures 24 and 25, which are three-dimensional assembled views of another embodiment of the first body of the present invention. Another embodiment of the first body of the present invention is provided with a second body in the opposite direction at the lower end. A perspective view of another embodiment. The shock wave superimposing device of the present invention is applied to a racket 4 and includes a racket frame 41 and a racket string 42 with a plurality of warp threads 421 and a plurality of weft threads 422 braided together to form a string bed. In another preferred embodiment, In the embodiment, it includes at least one first body 1 and at least one soft medium 3 .

The above-mentioned at least one first body 1 is square or rectangular in shape and made of hard medium, and has first string slot holes 1100 protruding from the upper ends of both ends thereof for providing the racket string 42 to pass through.

The aforementioned at least one soft medium 3 is in the shape of a ring and is provided in the first string slot hole 1100 of the first body 1 and provides a fixed racket string 42 .

The lower end of the first body 1 is provided with at least one second body 2 that is square or rectangular and is a hard medium. The lower ends of both sides of the second body 2 are respectively protruded with a second body 2 for threading the racket string 42 . The string slot hole 2100, the second string slot hole 2100 is provided with a ring and provides the soft medium for fixing the racket string 42; the angle between the first body 1 and the second body 2 can be adjusted from 0 degrees according to the staggering of the racket strings. to plus or minus one hundred and eighty degrees.

The present invention utilizes the first body 1 with the wall 10, the first wire trough 11 and the groove 110, and the second body 2 oppositely provided with the wall 20, the second wire trough 21 and The groove 210 is provided with the soft medium 3 thereon, or the first body 1 or the second body 2 is provided with the first node plate 12 and the second node plate 22 respectively, or The first body 1 and the second body 2 are provided with an outer covering soft medium 31; furthermore, the racket string 42 of the racket frame 41 is formed to provide a striking area (i.e., a shock wave generating area) for the sphere 5, and the use of When the shock wave hits the frame 41 First, the node formed by the first body 1 or the second body 2 or the first node plate 12 or the second node plate 22 is struck, and the shock wave is returned, so that the shock wave return propagation is shortened and the frequency is increased. To produce the effect of superposition of shock waves, increase the force of hitting the sphere 5; effectively improve the control of the deformation of the racket frame 41 and the torque of the racket frame 41, and inhibit the breakage of the racket frame 41, which will greatly expand the utilization of the industry and be novel and progressive. sex.

From the above, it can be seen that the present invention has indeed achieved the desired improvement effect by breaking through the previous technical structure, and it is not easy to imagine for those familiar with the art. Furthermore, the present invention has not been disclosed before the application, and it has It is progressive and practical, and has clearly met the application requirements for an invention patent. I am filing an invention application in accordance with the law. I sincerely request your office to approve this invention patent application to encourage invention and bring the utmost convenience.

The above-described embodiments are only for illustrating the technical ideas and characteristics of the present invention. Their purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be used to limit the patent scope of the present invention. That is to say, all equivalent changes or modifications made in accordance with the spirit disclosed in the present invention should still be covered by the patent scope of the present invention.

1: The first ontology

10:Wall

11:First trunking

110: Groove

12:First node board

2:Second body

20:Wall

21:Second trunking

210: Groove

3:Soft media

Claims (12)

A device that can generate shock wave superposition, which is used for a racket and includes a racket frame and a racket string with a plurality of warp threads and a plurality of weft threads that are woven together to form a string bed. It is characterized by including: at least a first body, which is a hard medium and in which A protruding wall is provided on one side or two sides, and a first wire trough with an opening at the upper end is formed on the inside of the wall on one side or in the center of the wall on both sides, and a groove is provided on the bottom of the first wire trough; One side wall and the two side walls are arranged in the entire section or the middle section of the first body, or in the staggered front and rear sections, or in the staggered rear and front sections; at least one soft medium is provided in the first section of the first body. Wire trough and provide fixed racket line. The device capable of generating shock wave superposition as described in item 1 of the patent application, wherein a second body is provided at the lower end of the first body and is a hard medium, and a protruding wall is provided on one or both sides of the first body. A second wire trough with an opening at the lower end is formed on the inside of the wall on one side or in the center of the wall on both sides. A groove is provided at the bottom of the second wire trough. The second wire trough is provided with a thread for fixing. The soft medium; the angle between the first body and the second body can be adjusted from 0 degrees to plus or minus 180 degrees according to the shooting line; the arrangement of the one side wall and the two side walls is based on the third 2. The whole section or the middle section of the main body or the front section and the rear section are offset, or the rear section and the front section are offset. As described in item 2 of the patent application, the device capable of generating shock wave superposition, wherein the second system disposed oppositely at the lower end of the first body can be integrally formed. The device capable of generating shock wave superposition as described in item 1 of the patent application, wherein the bottom of the first body is provided with a first gusset plate that has a circular shape but is not limited to it. As described in item 2 of the patent application, the device capable of generating shock wave superposition, wherein the bottom of the first body is provided with a first gusset plate that has a circular shape but is not limited to it. As described in item 5 of the patent application, the device capable of generating shock wave superposition, wherein the bottom of the second body is provided with a second gusset plate including but not limited to a circular shape, and the second gusset plate is different from the first gusset plate. All in one piece. The device capable of generating shock wave superposition as described in item 5 of the patent application, wherein the four corners of the first gusset plate of the first body are provided with missing corners. As described in item 6 of the patent application, the device capable of generating shock wave superposition, wherein the four corners of the first gusset plate of the first body are provided with notches and the four corners of the second gusset plate of the second body are provided with Missing corners. The device capable of generating shock wave superposition as described in Item 6 of the patent application, wherein at least one member that provides mutual fixation is provided between the first body and the second body or the first gusset plate and the second gusset plate. The intermediate medium includes but is not limited to the soft medium that is flat or the glue, cloth, leather, etc. that increase friction and achieve the function of suppressing the shock waves generated by vertical and horizontal warp and weft lines to isolate each other and avoid mutual interference, such as glue, cloth, leather, etc. Granular gel. The device capable of generating shock wave superposition as described in item 6 or 8 of the patent application, wherein the first gusset plate and the second gusset plate, together with the side and top surfaces of the first body and the second body are respectively provided There is an external soft medium connected to the soft medium, or the first gusset plate and the second gusset plate are covered with at least one external soft medium, or both sides of the first gusset plate and the second gusset plate are covered At least one external soft medium is provided. A device that can generate shock wave superposition, which is used for a racket and includes a racket frame and a racket string with a plurality of warp threads and a plurality of weft threads woven together to form a string bed. It is characterized by including: at least a first body, which is in a square or rectangular shape. It is a hard medium and protrudes from the upper ends of its two ends with first thread slot holes for providing string threading; at least one soft medium is annular and is provided in the first thread slot of the first body. hole and provides a fixed string. As described in item 11 of the patent application, the shock wave superposition device can be generated, wherein at least one second body in a square or rectangular shape and a hard medium is provided at the lower end of the first body, and the two sides of the second body are The lower ends respectively protrude with second thread slot holes for providing string threading sleeves. The second thread slot holes The soft medium is provided with a ring and provides fixation of the racket string; the angle between the first body and the second body can be adjusted from 0 degrees to plus or minus 180 degrees according to the staggering of the racket strings.