Integrated pedal transmission system integrated on middle disc

Abstract

The utility model relates to an integrated pedal transmission system integrated on a center plate, which comprises a piano bottom plate assembly, a piano side plate assembly and a piano center plate, the piano bottom plate assembly is provided with the piano side plate assembly, the middle part of the piano side plate assembly is provided with the piano center plate which is horizontally arranged, and the piano center plate is provided with a pedal. A cross beam is installed on the lower side of the rear end of the piano middle disc, a plurality of pedal structures are installed on the piano bottom plate assembly side by side, a plurality of transmission levers are installed on the cross beam side by side in the front-back direction, and lever fulcrums in butt joint with the middles of the transmission levers are installed on the cross beam. The pedal structures and the transmission levers are the same in number and are in one-to-one correspondence. The piano has the characteristics of integrating the internal structure of the piano, improving the visual effect in the piano, increasing the working height of lever assembly, facilitating the operation of production and after-sales personnel, facilitating the cleaning of the interior of the piano and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of piano pedal transmission, in particular to an integrated pedal transmission system integrated on a center plate. Background Art

[0002] The pedal systems used in mainstream pianos on the market are all installed on the piano bottom plate, or the left and right pedal levers are installed on the piano bottom plate, and the middle pedal lever is installed on the middle plate, which makes the pedal system inside the piano visually confusing. At the same time, the lever installed above the piano bottom plate will hinder the cleaning of the interior of the piano, making it difficult to thoroughly clean the interior of the piano. The installation position of the lever that is too low also has an adverse effect on production and after-sales operations. In order to solve the above technical problems, the pedal structure needs to be improved. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide an integrated pedal transmission system integrated on the center plate, which has the characteristics of integrating the internal structure of the piano, improving the visual effect inside the piano, raising the working height of the lever assembly, facilitating the operation of production and after-sales personnel, and facilitating the cleaning of the inside of the piano.

[0004] The utility model solves the technical problem by adopting the following technical scheme: providing an integrated pedal transmission system integrated on a middle plate, comprising a piano bottom plate assembly, a piano side plate assembly and a piano middle plate, wherein a piano side plate assembly is installed on the piano bottom plate assembly, a piano middle plate arranged horizontally is installed in the middle of the piano side plate assembly, a crossbeam is installed on the lower side of the rear end of the piano middle plate, a plurality of pedal structures are installed side by side on the piano bottom plate assembly, a plurality of transmission levers arranged side by side front and back are installed on the crossbeam, a lever fulcrum connected to the middle of the transmission lever is installed on the crossbeam, the number of the pedal structures and the transmission levers is the same, the two correspond to each other one by one, a transmission rod is installed between one end of the transmission lever and the corresponding pedal structure, and a weak tone gear transmission rod or a pedal top rod is installed on the other end of the transmission lever.

[0005] In the technical solution, a crossbeam is installed on the lower side of the piano middle plate to facilitate raising the height of the transmission lever, which is convenient for production and after-sales personnel to operate and adjust. By providing a pedal structure and a transmission rod that drives the transmission lever, the entire transmission system is centrally arranged to facilitate cleaning inside the piano. A lever fulcrum is provided to facilitate operation as a transmission lever. The lever fulcrum is located in the middle of the transmission lever, so that the lever can operate flexibly when it is in operation.

[0006] A crossbeam is set on the lower surface of the middle plate, and the crossbeam is fixed to the middle plate through a column. A pedal lever made of rigid material is installed on the crossbeam. There are comb teeth on the crossbeam to constrain the lever to prevent it from interfering with each other due to swinging during the action. The lever is connected to the pedal through a transmission rod. The transmission rod is divided into two parts, upper and lower, connected in the middle by a flexible gasket to prevent it from falling off and generating noise. A spring is set on the transmission rod to provide power for the pedal to reset. The pedal load can be changed by adjusting the spring tension to achieve an ideal foot feel. A support is directly set between the crossbeam and the piano bottom plate to enhance the rigidity of the crossbeam and the middle plate, avoid deformation of the middle plate, and extend the use time of the piano.

[0007] The internal structure of the piano is neat and uniform, with good visual effects; the working height of the lever assembly is raised, which is convenient for production and after-sales personnel to operate; there is no longer any lever blocking the surface of the piano bottom plate, which makes it easier to clean the inside of the piano; the middle plate is connected to the piano bottom plate through beams and pillars, integrating the piano bottom plate-pedal system-middle plate, and improving the deformation resistance of the entire system; the extra space on the piano bottom plate can be used as a storage space for items that come with the piano.

[0008] As a supplement to the present technical solution, there are three pedal structures and three transmission levers. The pedal structure located in the middle is a weak-pitch pedal. A weak-pitch transmission rod is installed on the transmission lever connected to the weak-pitch pedal, and pedal top rods are installed on the other two transmission levers.

[0009] In the technical solution, the three pedal structures are centrally arranged in the lower middle part of the piano, and the three transmission levers are arranged side by side front to back. The two are centrally arranged on the lower side of the piano middle plate and in the middle of the piano. The transmission structure is centrally arranged in a smaller space, making the internal structure more neat, simplifying the assembly steps and improving the visual aesthetics.

[0010] As a supplement to the technical solution, lower support frames whose lower ends are connected to the piano bottom plate assembly are installed side by side on the lower middle side of the crossbeam, and several upper support frames are installed between the piano middle plate and the crossbeam.

[0011] In the technical solution, the lower support frame and the upper support frame are provided to enhance the rigidity of the cross beam and the center plate, thereby avoiding deformation of the center plate and extending the service life of the piano.

[0012] As a supplement to the present technical solution, a support frame is installed near the middle of the transmission lever at the crossbeam, and a rectangular hole is provided in the middle of the support frame, and the transmission lever passes through the rectangular hole. In the present technical solution, the support frame is provided to support the piano middle plate, and the rectangular hole is provided to facilitate the passage of the transmission lever.

[0013] As a supplement to the present technical solution, the crossbeam is equipped with comb teeth near the weak tone transmission rod or the pedal top rod, the comb teeth include a comb tooth block and a lever slot, the upper end of the comb tooth block is provided with a plurality of lever slots corresponding to the transmission lever, and a felt structure is installed on the side wall of the lever slot.

[0014] In the technical solution, comb teeth are provided to ensure the stable operation of the transmission lever, and at the same time, a felt structure is provided to reduce the noise of the entire device when the transmission lever is in operation.

[0015] As a supplement to the present technical solution, the pedal structure includes a pedal base, a rear support rod and a pedal body. The pedal base is installed on the piano bottom plate assembly. A rear support rod extending rearward is provided at the rear of the pedal body. The rear end of the rear support rod is rotatably installed on the pedal base. The middle part of the rear support rod is connected to the transmission rod. The rear support rod and the pedal body are integrally formed.

[0016] In this technical solution, the outer ring of the pedal body adopts an arc-shaped appearance to improve the aesthetics of the structure. At the same time, the pedal base is used to ensure the transmission of the rear support rod, and the rear support rod is used to drive the transmission rod.

[0017] As a supplement to the present technical solution, the transmission rod includes an upper connecting rod and a lower connecting rod. The lower end of the upper connecting rod and the upper end of the lower connecting rod are both hook-shaped, and the two hooks are staggered and hooked. In the present technical solution, two hooks are used to connect the upper connecting rod and the lower connecting rod to ensure that the two are connected, serving as a connecting skeleton.

[0018] As a supplement to the present technical solution, a docking piece is provided at the connection point of the hooks of the upper connecting rod and the lower connecting rod. The hooks of the upper connecting rod and the lower connecting rod pass through the docking piece and are then sealed by welding. The docking piece is provided to improve the connection firmness of the upper connecting rod and the lower connecting rod.

[0019] As a supplement to the present technical solution, a threaded shaft is provided at the upper end of the transmission rod, a spring structure is sleeved on the threaded shaft, the spring structure is located between the transmission lever and the crossbeam, the threaded shaft passes through the transmission lever, and a spring adjustment nut connected to the threaded shaft is installed above the transmission lever.

[0020] In the technical solution, a threaded shaft and a spring adjustment nut are provided to adjust the elastic coefficient of the spring structure, thereby controlling the elastic recovery speed of the transmission lever. By providing the spring structure, the reset of the transmission lever can be conveniently controlled.

[0021] As a supplement to the present technical solution, a height adjustment nut is installed at the lower end of the pedal top rod, a height adjustment threaded shaft is installed on the lower side of the pedal top rod, the pedal top rod is sleeved on the height adjustment threaded shaft, and a height adjustment nut is installed at the lower end of the pedal top rod. The height adjustment threaded shaft and the height adjustment nut form a threaded connection, and the height adjustment threaded shaft and the height adjustment nut are set to control the upper and lower positions of the pedal top rod.

[0022] As a supplement to the present technical solution, a mute fence is horizontally installed in the upper part of the piano side panel assembly, slot box structures are installed at both ends of the mute fence, and a slot box docking shaft connected to the piano side panel assembly is installed at the lower part of the slot box structure. The slot box structure is provided to facilitate the control of the rotation of the mute fence.

[0023] As a supplement to the present technical solution, a slot box structure is provided near the weak sound gear transmission rod, the slot box structure includes a slot box body, a connecting ear is provided on the slot box body, a plug-in piece inserted into the connecting ear is provided on the weak sound gear transmission rod, a connecting shaft is provided between the connecting ear and the plug-in piece, and the connecting ear of the slot box structure is provided to ensure that the weak sound gear transmission rod drives the slot box structure to rotate, and the connecting ear of the slot box structure is provided to ensure that the weak sound gear transmission rod drives the slot box structure to rotate.

[0024] As a supplement to the present technical solution, the transmission lever comprises a lever body, a docking extension frame and an extension bracket, one end of the lever body is provided with an extension bracket, and the other end of the lever body is installed with a docking extension frame.

[0025] Beneficial effects: The utility model relates to an integrated pedal transmission system integrated on the middle plate. By installing a crossbeam on the lower side of the middle plate of the piano, the height of the transmission lever can be conveniently raised, which facilitates the operation and adjustment by production and after-sales personnel. By setting the pedal structure and the transmission rod that drives the transmission lever, the entire transmission system is centrally arranged, which is convenient for cleaning the inside of the piano. By setting the lever fulcrum to facilitate the operation as a transmission lever, the lever fulcrum is located in the middle of the transmission lever, so that when the lever is in operation, the lever can be ensured to operate flexibly. It has the characteristics of integrating the internal structure of the piano, improving the visual effect inside the piano, raising the working height of the lever assembly, facilitating the operation of production and after-sales personnel, and facilitating the cleaning of the inside of the piano. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is the front view of the utility model;

[0027] Figure 2 It is a rear view of the utility model;

[0028] Figure 3 This is a rear structural view of the utility model;

[0029] Figure 4 This utility model Figure 3 A partial enlarged view of the middle part;

[0030] Figure 5 This utility model Figure 3 A partial enlarged view of point B in the middle;

[0031] Figure 6 This utility model Figure 3 A partial enlarged view of point C in the middle;

[0032] Figure 7 It is a left side view of the transmission system of the utility model;

[0033] Figure 8 This utility model Figure 7 A partial enlarged view of point D in the middle;

[0034] Fig. 9 This utility model Figure 7 A partial enlarged view of point E in the middle;

[0035] Fig.10 It is the front view of the transmission system of the utility model;

[0036] Fig.11 This utility model Fig.10 A partial enlarged view of point F in the middle;

[0037] Fig.12 It is a structural view of the transmission lever described in the utility model.

[0038] Illustration: 1. Piano bottom plate assembly, 2. Piano side plate assembly, 3. Piano middle plate, 4. Pedal structure, 5. Transmission rod, 6. Transmission lever, 7. Lever fulcrum, 8. Comb teeth, 9. Crossbeam, 10. Upper support frame, 11. Lower support frame, 12. Pedal top rod, 13. Mute gear transmission rod, 14. Slot box structure, 15. Mute gear, 16. Support frame, 17. Rectangular hole, 18. Comb tooth block, 19. Lever slot, 20. Felt Structure, 21, pedal body, 22, rear support rod, 23, pedal base, 24, lower connecting rod, 25, docking plate, 26, upper connecting rod, 27, spring structure, 28, threaded shaft, 29, spring adjustment nut, 30, height adjustment threaded shaft, 31, height adjustment nut, 32, slot box body, 33, slot box docking shaft, 34, plug-in plate, 35, connecting ear, 36, lever body, 37, docking extension frame, 38, extension bracket. DETAILED DESCRIPTION

[0039] The present invention is further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the claims attached to this application.

[0040] The embodiment of the utility model relates to an integrated pedal transmission system integrated on the middle disc, such as Figure 1 As shown in FIG. 3 , the piano comprises a piano bottom plate assembly 1, a piano side plate assembly 2 and a piano middle plate 3, wherein the piano bottom plate assembly 1 is provided with a piano side plate assembly 2, a piano middle plate 3 arranged horizontally is provided in the middle of the piano side plate assembly 2, a crossbeam 9 is provided at the lower side of the rear end of the piano middle plate 3, a plurality of pedal structures 4 are provided side by side on the piano bottom plate assembly 1, a plurality of transmission levers 6 arranged side by side front and back are provided on the crossbeam 9, a lever fulcrum 7 connected to the middle of the transmission lever 6 is provided on the crossbeam 9, the number of the pedal structures 4 and the transmission levers 6 are the same, and the two correspond to each other one by one, and a transmission rod 5 is provided between one end of the transmission lever 6 and the corresponding pedal structure 4, and a weak tone transmission rod 13 or a pedal top rod 12 is provided at the other end of the transmission lever 6.

[0041] In the technical solution, a crossbeam 9 is installed on the lower side of the piano middle plate 3 to facilitate the height of the transmission lever 6, which is convenient for production and after-sales personnel to operate and adjust. By providing a pedal structure 4 and a transmission rod 5 that drives the transmission lever 6, the entire transmission system is centrally arranged to facilitate cleaning inside the piano. A lever fulcrum 7 is provided to facilitate the operation of the transmission lever 6. The lever fulcrum 7 is located in the middle of the transmission lever 6, so that when the lever is in operation, the lever can be flexibly operated.

[0042] As a supplement to the present technical solution, there are three pedal structures 4 and three transmission levers 6. The pedal structure 4 located in the middle is a weak-tone pedal. A weak-tone transmission rod 13 is installed on the transmission lever 6 connected to the weak-tone pedal, and pedal top rods 12 are installed on the other two transmission levers 6.

[0043] In the technical solution, the three pedal structures 4 are centrally arranged in the middle of the lower part of the piano, and the three transmission levers 6 are arranged side by side front and back. Both are centrally arranged on the lower side of the piano middle plate 3 and in the middle of the piano. The transmission structure is centrally arranged in a smaller space, making the internal structure more neat, simplifying the assembly steps and improving the visual beauty.

[0044] like Figure 4As shown, as a supplement to the present technical solution, lower support frames 11 whose lower ends are connected to the piano bottom plate assembly 1 are installed side by side on the lower middle side of the crossbeam 9, and several upper support frames 10 are installed between the piano middle plate 3 and the crossbeam 9.

[0045] In the technical solution, the lower support frame 11 and the upper support frame 10 are provided to enhance the rigidity of the cross beam and the center plate, thereby avoiding deformation of the center plate and extending the service life of the piano.

[0046] like Figure 5 As shown, as a supplement to the present technical solution, a support frame 16 is installed near the middle of the transmission lever 6 at the crossbeam 9, and a rectangular hole 17 is provided in the middle of the support frame 16, through which the transmission lever 6 passes. In the present technical solution, the support frame 16 is provided to support the piano middle plate 3, and the rectangular hole 17 is provided to facilitate the passage of the transmission lever 6.

[0047] like Figure 6 As shown, as a supplement to the present technical solution, the cross beam 9 is provided with comb teeth 8 near the weak tone transmission rod 13 or the pedal top rod 12, and the comb teeth 8 include a comb tooth block 18 and a lever slot 19, and the upper end of the comb tooth block 18 is provided with a plurality of lever slots 19 corresponding to the transmission lever 6, and a felt structure 20 is installed on the side wall of the lever slot 19.

[0048] In the present technical solution, the comb teeth 8 are provided to ensure the stable operation of the transmission lever 6, and the felt structure 20 is provided to reduce the noise of the entire device when the transmission lever 6 is in operation.

[0049] like Figure 7 As shown, as a supplement to the present technical solution, the pedal structure 4 includes a pedal base 23, a rear support rod 22 and a pedal body 21. The pedal base 23 is installed on the piano bottom plate assembly 1. The rear part of the pedal body 21 is provided with a rear support rod 22 extending backward. The rear end of the rear support rod 22 is rotatably installed on the pedal base 23. The middle part of the rear support rod 22 is connected to the transmission rod 5. The rear support rod 22 and the pedal body 21 are integrally formed.

[0050] In the present technical solution, the outer ring of the pedal body 21 adopts an arc-shaped appearance to improve the aesthetics of the structure. At the same time, the pedal base 23 is used to ensure the transmission of the rear support rod 22, and the rear support rod 22 is used to drive the transmission rod 5.

[0051] As a supplement to the present technical solution, the transmission rod 5 includes an upper connecting rod 26 and a lower connecting rod 24. The lower end of the upper connecting rod 26 and the upper end of the lower connecting rod 24 are both hook-shaped, and the two hooks are staggered and hooked. In the present technical solution, two hooks are used to achieve docking of the upper connecting rod 26 and the lower connecting rod 24 to ensure that the two are connected, serving as a docking skeleton.

[0052] As a supplement to the present technical solution, a docking piece 25 is provided at the hook connection of the upper connecting rod 26 and the lower connecting rod 24. The hooks of the upper connecting rod 26 and the lower connecting rod 24 pass through the docking piece 25 and are then sealed by welding. The docking piece 25 is provided to improve the connection firmness between the upper connecting rod 26 and the lower connecting rod 24.

[0053] like Fig.10 and Fig.11 As shown, as a supplement to the present technical solution, a threaded shaft 28 is provided at the upper end of the transmission rod 5, a spring structure 27 is sleeved on the threaded shaft 28, the spring structure 27 is located between the transmission lever 6 and the crossbeam 9, the threaded shaft 28 passes through the transmission lever 6, and a spring adjustment nut 29 connected to the threaded shaft 28 is installed above the transmission lever 6.

[0054] In the present technical solution, a threaded shaft 28 and a spring adjustment nut 29 are provided to adjust the elastic coefficient of the spring structure 27 to control the elastic recovery speed of the transmission lever 6. By providing the spring structure 27, the reset of the transmission lever 6 can be conveniently controlled.

[0055] like Figure 8 As shown, as a supplement to the present technical solution, a height adjustment nut 31 is installed at the lower end of the pedal push rod 12, a height adjustment threaded shaft 30 is installed at the lower side of the pedal push rod 12, the pedal push rod 12 is sleeved on the height adjustment threaded shaft 30, a height adjustment nut 31 is installed at the lower end of the pedal push rod 12, the height adjustment threaded shaft 30 and the height adjustment nut 31 form a threaded connection, and the height adjustment threaded shaft 30 and the height adjustment nut 31 are arranged to control the upper and lower positions of the pedal push rod 12.

[0056] like Fig. 9 As shown, as a supplement to the present technical solution, a mute fender 15 is horizontally installed in the upper part of the piano side panel assembly 2, and slot box structures 14 are installed at both ends of the mute fender 15. The lower part of the slot box structure 14 is installed with a slot box docking shaft 33 connected to the piano side panel assembly 2. The slot box structure 14 is provided to facilitate the control of the rotation of the mute fender 15.

[0057] As a supplement to the present technical solution, a slot box structure 14 is provided near the weak sound gear transmission rod 13, and the slot box structure 14 includes a slot box body 32, and a connecting ear 35 is provided on the slot box body 32, and a plug-in piece 34 inserted into the connecting ear 35 is provided on the weak sound gear transmission rod 13, and a connecting shaft is provided between the connecting ear 35 and the plug-in piece 34. By setting the connecting ear 35 of the slot box structure 14, it is used to ensure that the weak sound gear transmission rod 13 drives the slot box structure 14 to rotate.

[0058] like Fig.12 As shown, as a supplement to the present technical solution, the transmission lever 6 includes a lever body 36, a docking extension frame 37 and an extension bracket 38, one end of the lever body 36 is provided with an extension bracket 38, and the other end of the lever body 36 is installed with a docking extension frame 37.

[0059] Example 1

[0060] When operating, the performer can step on the pedal structure 4 with his foot, and the pedal structure 4 drives the transmission rod 5. The transmission rod 5 pulls down one end of the transmission lever 6, so that the other end of the transmission lever 6 is lifted upward. The transmission lever 6 can push the weak tone transmission rod 13 or the pedal top rod 12. After completing the operation, release the foot, and the transmission lever 6 is restored to its original state under the action of the spring structure 27.

[0061] Example 2

[0062] When the transmission lever 6 is running, the transmission lever 6 can be disengaged from the lever slot 19 of the comb tooth 8. After the transmission lever 6 is completed, it needs to be reset. During the resetting process, the transmission lever 6 will enter the lever slot 19. In order to avoid excessive noise during the operation of the transmission lever 6, a felt structure 20 for sound reduction is provided on the inner wall of the lever slot 19.

[0063] Example 3

[0064] Since the transmission lever 6 is arranged on the crossbeam 9 in the middle of the piano, and the pedal structure 4 and the transmission rod 5 mainly occupy the space in the middle of the piano, the entire transmission system is centrally arranged, which is convenient for cleaning the inside of the piano, makes the piano structure more uniform, and improves the aesthetics of the structure.

[0065] The above is a detailed introduction to the integrated pedal transmission system integrated on the center disc provided by the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea; at the same time, for general technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. An integrated pedal transmission system integrated on a piano base, comprising a piano bottom plate assembly (1), a piano side plate assembly (2) and a piano base (3), wherein the piano bottom plate assembly (1) is mounted with a piano side plate assembly (2), and a piano base (3) arranged horizontally is mounted in the middle of the piano side plate assembly (2), characterized in that: A crossbeam (9) is installed at the lower side of the rear end of the piano middle plate (3); a plurality of pedal structures (4) are installed side by side on the piano bottom plate assembly (1); a plurality of transmission levers (6) arranged side by side in front and back are installed on the crossbeam (9); a lever fulcrum (7) connected to the middle of the transmission lever (6) is installed on the crossbeam (9); the number of the pedal structures (4) and the transmission levers (6) is the same, and the two correspond to each other one by one; a transmission rod (5) is installed between one end of the transmission lever (6) and the corresponding pedal structure (4); and a weak tone transmission rod (13) or a pedal top rod (12) is installed on the other end of the transmission lever (6).

2. The integrated pedal transmission system integrated on the center disc according to claim 1, characterized in that: Lower support frames (11) whose lower ends are connected to the piano bottom plate assembly (1) are installed side by side on the lower middle side of the crossbeam (9), and a plurality of upper support frames (10) are installed between the piano middle plate (3) and the crossbeam (9).

3. The integrated pedal transmission system integrated on the center disc according to claim 1, characterized in that: A support frame (16) is installed near the middle of the transmission lever (6) on the cross beam (9), a rectangular hole (17) is arranged in the middle of the support frame (16), and the transmission lever (6) passes through the rectangular hole (17).

4. The integrated pedal transmission system integrated on the center disc according to claim 1, characterized in that: The cross beam (9) is provided with comb teeth (8) near the weak tone transmission rod (13) or the pedal top rod (12); the comb teeth (8) include a comb tooth block (18) and a lever slot (19); the upper end of the comb tooth block (18) is provided with a plurality of lever slots (19) corresponding to the transmission lever (6); and a felt structure (20) is installed on the side wall of the lever slot (19).

5. The integrated pedal transmission system integrated on the center disc according to claim 1, characterized in that: The pedal structure (4) comprises a pedal base (23), a rear support rod (22) and a pedal body (21); the pedal base (23) is mounted on the piano bottom plate assembly (1); a rear support rod (22) extending rearward is arranged at the rear of the pedal body (21); the rear end of the rear support rod (22) is rotatably mounted on the pedal base (23); the middle part of the rear support rod (22) is connected to the transmission rod (5); and the rear support rod (22) and the pedal body (21) are integrally formed.

6. The integrated pedal transmission system integrated on the center disc according to claim 1, characterized in that: The transmission rod (5) comprises an upper connecting rod (26) and a lower connecting rod (24); the lower end of the upper connecting rod (26) and the upper end of the lower connecting rod (24) are both hook-shaped, and the two hooks are staggered and hooked.

7. The integrated pedal transmission system integrated on the center disc according to claim 6, characterized in that: A butt joint piece (25) is provided at the hooked position of the upper connecting rod (26) and the lower connecting rod (24), and the hooks of the upper connecting rod (26) and the lower connecting rod (24) pass through the butt joint piece (25) and are then sealed by welding.

8. The integrated pedal transmission system integrated on the center disc according to claim 1, characterized in that: A threaded shaft (28) is provided at the upper end of the transmission rod (5), a spring structure (27) is sleeved on the threaded shaft (28), the spring structure (27) is located between the transmission lever (6) and the crossbeam (9), the threaded shaft (28) passes through the transmission lever (6), and a spring adjustment nut (29) connected to the threaded shaft (28) is installed above the transmission lever (6).

9. The integrated pedal transmission system integrated on the center disc according to claim 1, characterized in that: A height adjustment nut (31) is installed at the lower end of the pedal push rod (12), a height adjustment threaded shaft (30) is installed on the lower side of the pedal push rod (12), the pedal push rod (12) is sleeved on the height adjustment threaded shaft (30), a height adjustment nut (31) is installed at the lower end of the pedal push rod (12), and the height adjustment threaded shaft (30) and the height adjustment nut (31) form a threaded connection.

10. The integrated pedal transmission system integrated on the center disc according to claim 1, characterized in that: The transmission lever (6) comprises a lever body (36), a docking extension frame (37) and an extension bracket (38); one end of the lever body (36) is provided with the extension bracket (38), and the other end of the lever body (36) is installed with the docking extension frame (37).

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