Improved power output device

Abstract

The invention discloses an improved power output device, which relates to the technical field of mechanical transmission and comprises a shell, a rotating unit and a damping unit, a partition plate in the shell is divided into a first working cavity and a second working cavity, an input shaft and an output shaft which are coaxial are rotatably arranged on the two sides, and an eccentric shaft is rotatably arranged on the partition plate. The rotating unit is arranged in the second working cavity; the multi-stage transmission assembly is connected with the motor and the eccentric shaft; the damping unit is arranged in the first working cavity, the torsion transmission plate is clamped between the two damping plates, and the damping plates and the torsion transmission plate are connected through the springs. The torsion transmission plate is connected with a transmission plate through a transmission shaft, the transmission plate is connected with an output shaft and an input shaft through a one-way clutch, and the output shaft is provided with a belt pulley; multi-spring circumferential array damping is achieved, high-frequency large loads are adapted, and the service life of parts is prolonged; the ratio is adjustable through multi-stage transmission, power supply is stable through a built-in wire, and the multi-power requirement is met; the modular cavity and the top cover are designed, so that the maintenance is convenient; the one-way clutch and the belt pulley expand the scene, and the transmission stability and practicability are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of mechanical transmission technology, and more specifically to an improved power output device. Background Technology

[0002] The power take-off device is the core component for transmitting power in a mechanical system. Existing technologies, such as CN223063083U, a new type of power take-off device, have achieved a breakthrough in "small power driving high power" (through a dual-input mode of input shaft revolution and motor-driven eccentric shaft rotation), but still have obvious shortcomings:

[0003] On the one hand, the vibration damping structure design is inadequate. Existing devices only achieve vibration damping through a single torsion spring. The spring is prone to fatigue damage due to concentrated force, and it can only buffer vibrations in one direction. Under high-frequency or high-load conditions, the vibration damping effect is poor, which easily leads to component wear and shortens the service life of the device. On the other hand, the transmission and layout are limited. The force transmission unit of the existing device relies on the complex cooperation of slide rails, rotary bearings and force transmission rods. The structure is cumbersome and prone to jamming, making maintenance difficult. The motor power supply relies on a conductive ring sleeved on the input shaft. Long-term rotation can easily lead to poor contact, affecting the stability of the power supply. At the same time, the device lacks clear cavity separation, and the mixed layout of various components makes them prone to interference from oil and dust, increasing the risk of failure.

[0004] Furthermore, the existing device's rotating unit lacks a modular design, making it inconvenient to disassemble and assemble the motor and transmission components. Subsequent maintenance requires complete disassembly, resulting in low efficiency. Therefore, developing an improved power output device with good shock absorption, stable transmission, a reasonable layout, and convenient maintenance has become an urgent problem to be solved in the field of mechanical transmission. Summary of the Invention

[0005] The purpose of this invention is to overcome the above-mentioned problems and provide an improved power output device. To achieve the above objective, this invention adopts the following technical solution:

[0006] An improved power take-off device includes a housing, a rotating unit, and a shock-absorbing unit;

[0007] The housing is provided with a partition plate, which divides the housing into a first working chamber and a second working chamber. An input shaft and an output shaft are rotatably provided on both sides of the housing, and an eccentric shaft is rotatably provided on the partition plate. The shock absorption unit is provided in the first working chamber and the rotation unit is provided in the second working chamber.

[0008] One end of the input shaft is connected to a rotating unit, and the other side of the rotating unit is connected to an eccentric shaft. A torque transmission plate is provided on the eccentric shaft. The damping unit is located between the eccentric shaft and the torque transmission plate. One side of the outer ring of the torque transmission plate is rotatably connected to a transmission plate via a transmission shaft. An output shaft is coaxially connected to the center of the transmission plate.

[0009] The input shaft and output shaft are coaxially arranged, and the eccentric shaft is eccentrically arranged with respect to the input shaft and output shaft.

[0010] The damping unit includes two damping plates and several damping springs. The damping plates are sleeved on the eccentric shaft. The two damping plates are fixed at both ends. The torque transmission plate is disposed between the two damping plates. Several damping springs are installed in a circular array along the eccentric shaft between the torque transmission plate and the damping plates. The damping springs connect the damping plates and the torque transmission plate.

[0011] The rotating unit includes a rotating box, a motor, and a multi-stage transmission assembly. The motor and the multi-stage transmission assembly are disposed inside the rotating box, and the multi-stage transmission assembly connects the motor output end to the eccentric shaft.

[0012] As an improvement, a gap is provided between the damping plate and the torque transmission plate, and a number of rectangular holes are arranged in a circumferential array along the eccentric axis direction on the torque transmission plate. Rectangular grooves are provided on the inner sides of the two damping plates. The rectangular holes and rectangular grooves cooperate to form a mounting groove, and the damping spring is set on the mounting groove.

[0013] As an improvement, the rotating box is provided with a first mounting cavity and a second mounting cavity. The motor is fixed in the second mounting cavity. The multi-stage transmission assembly includes a driving gear, a driven gear, and a transmission gear set. The driving gear is located on the output end of the motor, and the driven gear is located on an eccentric shaft. The transmission gear set includes a transmission shaft, a first transmission wheel, and a second transmission wheel. The transmission shaft is rotatably located in the first mounting cavity. The first transmission wheel and the second transmission wheel are located on the transmission shaft. The outer diameter of the first transmission wheel is smaller than the outer diameter of the second transmission wheel. The first transmission wheel meshes with the driven gear, and the second transmission wheel meshes with the driving gear.

[0014] As an improvement, the rotating unit also includes an eccentric sleeve, which is rotatably connected to the side wall of the rotating box and the partition plate. The outer diameter axis of the eccentric sleeve is coaxial with the axis of the input shaft and the output shaft. The eccentric sleeve has an eccentric hole inside, and the eccentric shaft passes through the eccentric hole. The driven gear is set on the through end of the eccentric shaft.

[0015] As an improvement, the input shaft has a cylindrical structure, with its end fixed to one side of the rotating box. An integrated conductive ring is provided at the end of the input shaft, and a wire is fixed inside the input shaft. The integrated conductive ring is electrically connected to the motor contact, and the conductive ring is connected to an external power source through the wire.

[0016] As an improvement, the torque transmission plate and the transmission plate are respectively provided with a first mounting hole and a second mounting hole at both ends. The transmission shaft is set on the first mounting hole and the second mounting hole at the same end. An eccentric bearing is provided on the first mounting hole. One end of the transmission shaft is set on the eccentric bearing, and the other end of the transmission shaft is rotatably set on the second mounting hole. The eccentricity of the eccentric bearing is greater than the eccentricity of the eccentric shaft.

[0017] As an improvement, a top cover is provided on the first mounting cavity.

[0018] As an improvement, a rotary bearing is provided between the input shaft, output shaft, eccentric shaft and housing, and the rotary bearing is supported and fixed by a bearing seat.

[0019] As an improvement, a one-way clutch is provided on one side of the transmission plate, and the transmission plate is connected to the output shaft through the one-way clutch.

[0020] As an improvement, pulleys are provided on the input shaft and the output shaft.

[0021] The advantages of this invention are:

[0022] 1. This invention has excellent shock absorption effect and stable operation: the multi-shock-absorbing spring design of the circumferential array replaces the existing single-spring structure, resulting in more uniform and durable shock absorption, effectively protecting components and extending service life; the independent cavity layout of the shock absorption unit and the rotating unit avoids mutual interference and improves overall operational stability.

[0023] 2. The present invention has high efficiency and reliability in transmission and strong adaptability: the multi-stage transmission components can adjust the transmission ratio to adapt to different power requirements; the cylindrical input shaft has built-in wires for power supply, which solves the problem of poor contact; the one-way clutch and pulley design expands the application scenarios and adapts to a variety of loads.

[0024] 3. This invention is easy to maintain and has low cost: the modular cavity design of the rotating unit and the top cover facilitate the maintenance of the transmission components; the shock-absorbing spring and the mounting groove are precisely positioned and easy to replace; each component is independently laid out, which improves the efficiency of fault diagnosis and reduces maintenance costs. Attached Figure Description

[0025] Figure 1 This is an internal structural diagram of an improved power output device in Example 1.

[0026] Figure 2 This is a structural diagram of an improved power output device in Example 1.

[0027] Figure 3 This is a top view of the rotating unit in Example 1.

[0028] Figure 4 This is a structural diagram of the multi-stage transmission assembly in Example 1.

[0029] Figure 5 This is a structural diagram of the damping unit in Example 1.

[0030] Figure 6 This is an exploded structural diagram of the shock absorption unit in Example 1.

[0031] Figure 7 This is a structural diagram of the input shaft in Example 1.

[0032] Figure 8 This is a cross-sectional view of the input shaft in Example 1.

[0033] Figure 9 This is a structural diagram of the eccentric sleeve in Example 1.

[0034] Figure 10 This is a front view of the eccentric sleeve in Example 1.

[0035] The diagram is labeled as follows:

[0036] 1. Outer shell; 11. Partition plate; 111. First working chamber; 112. Second working chamber; 12. Bearing housing; 13. Input shaft;

[0037] 131. Wire; 132. Integrated conductive ring; 14. Output shaft; 15. Eccentric shaft; 151. Eccentric sleeve; 152. Eccentric hole;

[0038] 16. Pulley; 17. Rotary bearing;

[0039] 2. Rotating unit; 21. Rotating box; 211. First mounting cavity; 212. Second mounting cavity; 213. Top cover; 22. Motor; 23. Multi-stage transmission assembly; 231. Driving gear; 232. Driven gear; 233. Transmission shaft; 234. First transmission wheel; 235. Second transmission wheel;

[0040] 3. Vibration damping unit; 31. Vibration damping plate; 311. Rectangular groove; 32. Torque transmission plate; 321. Rectangular hole; 322. First mounting hole; 323. Eccentric bearing; 33. Vibration damping spring;

[0041] 4. Transfer plate; 41. Transfer shaft; 42. Second mounting hole. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0043] In the description of the embodiments of the present invention, it should be noted that if terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, terms such as "first," "second," and "third" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0044] Furthermore, the use of terms such as "horizontal," "vertical," and "sag" does not imply that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0045] In the description of the embodiments of the present invention, "multiple" means at least two.

[0046] In the description of the embodiments of the present invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific circumstances.

[0047] The present invention will now be described in detail and specifically through specific embodiments to enable a better understanding of the invention. However, the following embodiments do not limit the scope of protection of the present invention.

[0048] Example 1

[0049] This embodiment discloses an improved power output device.

[0050] like Figures 1 to 10 As shown, this embodiment includes a housing 1, a rotating unit 2, and a shock-absorbing unit 3. The three components work together to achieve dual-input power transmission and stable output. The specific structure is as follows:

[0051] (I) The separation structure between the outer shell 1 and the cavity

[0052] The outer shell 1 serves as the basic support component of the device, and an internal partition plate 11 is provided. The partition plate 11 divides the interior of the outer shell 1 into a first working chamber 111 and a second working chamber 112, thereby enabling the independent layout of different functional components.

[0053] First working chamber 111: used to install shock absorption unit 3. The shock absorption unit 3 includes several shock absorption springs 33. The function of the shock absorption springs 33 is to buffer when the device starts working, and at the same time to pre-compress the torque transmission plate 32.

[0054] The second working chamber 112 is used to install the rotating unit 2, providing a closed and independent operating space for the rotating unit 2, reducing the contamination of the motor 22 and transmission components by external oil and dust, and reducing the risk of failure.

[0055] An input shaft 13 and an output shaft 14 are rotatably mounted on both sides of the outer casing 1. An eccentric shaft 15 is rotatably mounted on the partition plate 11. Rotary bearings 17 are provided between the input shaft 13, output shaft 14, eccentric shaft 15 and the outer casing 1. The rotary bearings 17 are supported and fixed by bearing seats 12 to ensure that each shaft rotates flexibly and has precise coaxiality, reducing transmission losses caused by shaft wobbling. The input shaft 13 and output shaft 14 are coaxially arranged, and the eccentric shaft 15 is eccentrically arranged with respect to the input shaft 13 and output shaft 14, providing a structural basis for the dual-input power mode of "revolution + rotation".

[0056] (II) Rotating Unit 2 Structure

[0057] The rotating unit 2 is located in the second working chamber 112 and is responsible for transmitting the revolution power of the input shaft 13 and the rotation power of the motor 22 to the eccentric shaft 15. It includes a rotating box 21, a motor 22, and a multi-stage transmission assembly 23. It adopts a modular design to improve transmission stability and ease of maintenance.

[0058] Rotary housing 21 and cavity layout: The rotary housing 21 has a first mounting cavity 211 and a second mounting cavity 212. The first mounting cavity 211 is used to install the multi-stage transmission assembly 23, and the second mounting cavity 212 is used to fix the motor 22. The cavity separation design allows the motor 22 and the transmission assembly to operate independently, avoiding the impact of the motor 22's heat on the transmission components, and also facilitating individual disassembly and maintenance. The first mounting cavity 211 is equipped with a top cover 213. By opening the top cover 213, the multi-stage transmission assembly 23 can be inspected and maintained without disassembling the entire rotary housing 21, greatly improving maintenance efficiency.

[0059] Multi-stage transmission assembly 23 includes a driving gear 231, a driven gear 232, and a transmission gear set. The driving gear 231 is mounted on the output end of the motor 22, and the driven gear 232 is mounted on the eccentric shaft 15. The transmission gear set includes a transmission shaft 233, a first transmission wheel 234, and a second transmission wheel 235. The transmission shaft 233 is rotatably mounted in the first mounting cavity 211. The first transmission wheel 234 and the second transmission wheel 235 are fixed on the transmission shaft 233, and the outer diameter of the first transmission wheel 234 is smaller than the outer diameter of the second transmission wheel 235.

[0060] The transmission path is as follows: the output end of motor 22 drives the driving gear 231 to rotate → the driving gear 231 meshes with the second transmission wheel 235, driving the transmission shaft 233 to rotate → the transmission shaft 233 drives the first transmission wheel 234 to rotate → the first transmission wheel 234 meshes with the driven gear 232, driving the eccentric shaft 15 to rotate. The multi-stage transmission design allows for adjustment of the transmission ratio as needed, ensuring that the power from motor 22 is transmitted to the eccentric shaft 15, while simultaneously distributing the load of a single-stage transmission, reducing gear wear, and extending transmission life; compared to the single-stage gear transmission of existing devices, it offers stronger stability and adaptability.

[0061] The rotating unit 2 also includes an eccentric sleeve 151, which is rotatably connected to the side wall of the rotating box 21 and the partition plate 11. The outer diameter axis of the eccentric sleeve 151 is coaxial with the axes of the input shaft 13 and the output shaft 14. The eccentric sleeve 151 has an eccentric hole 152 inside, through which the eccentric shaft 15 passes. The driven gear 232 is set on the through end of the eccentric shaft 15. The eccentric sleeve 151 has a bearing on its outside, which is installed in the machine body. Compared with the previous method, the addition of the eccentric sleeve 151 improves the problem of one end of the rotating unit 2 being suspended.

[0062] Power supply structure of motor 22: The input shaft 13 is a cylindrical structure, with its end fixed to one side of the rotating box 21. The end of the input shaft 13 is fixed to one side of the rotating box 21, and an integrated conductive ring 132 is provided at the end of the input shaft 13. A wire 131 is fixed inside the input shaft 13. The integrated conductive ring 132 is electrically connected to the motor 22. The conductive ring is connected to the external power supply through the wire 131, which significantly improves the stability of power supply. At the same time, the wire 131 is hidden inside the input shaft 13 to avoid damage from external collisions, thus improving safety.

[0063] (III) Structure of Vibration Reduction Unit 3

[0064] The damping unit 3 is disposed in the first working chamber 111, between the eccentric shaft 15 and the torque transmission plate 32, and is used to buffer the impact and vibration during the rotation of the eccentric shaft 15. It includes two damping plates 31 and several damping springs 33, which are arranged in a circumferential array to improve the damping effect.

[0065] The damping plate 31 and the torque transmission plate 32 are fitted together: both damping plates 31 are sleeved on the eccentric shaft 15 and fixed at both ends (they can be fixed to the outer shell 1 or the partition plate 11 by bolts) to form a fixed support frame; the torque transmission plate 32 is set between the two damping plates 31, with a gap between it and the damping plates 31 to ensure that the torque transmission plate 32 can rotate freely and avoid friction with the damping plates 31 to avoid wear.

[0066] The damping spring 33 and the mounting groove: Several rectangular holes 321 are arranged in a circular array along the eccentric shaft 15 on the upper edge of the torque transmission plate 32. Rectangular grooves 311 are correspondingly provided on the inner sides of the two damping plates 31. The rectangular holes 321 and rectangular grooves 311 cooperate to form the mounting groove. The damping spring 33 is installed in the mounting groove, with its two ends connected to the damping plate 31 and the torque transmission plate 32, respectively. The circular array layout allows the damping spring 33 to evenly distribute the impact force of the torque transmission plate 32. Compared to the single torsion spring in existing devices, the damping effect is more uniform and longer-lasting, effectively absorbing vibrations from different directions and protecting subsequent transmission components. The mounting groove design ensures accurate positioning of the damping spring 33, preventing spring displacement or detachment during rotation.

[0067] (iv) Power transmission and output structure

[0068] A torque transmission plate 32 is fixedly mounted on the eccentric shaft 15. One side of the outer ring of the torque transmission plate 32 is rotatably connected to a transmission plate 4 via a transmission shaft 41. The center of the transmission plate 4 is coaxially connected to an output shaft 14, thereby realizing the transmission of power from the eccentric shaft 15 to the output shaft 14.

[0069] Transmission shaft 41 and connecting structure: The torque transmission plate 32 and the transmission plate 4 are respectively provided with a first mounting hole 322 and a second mounting hole 42 at both ends. One end of the transmission shaft 41 is set in the first mounting hole 322, and the other end is rotatably set in the second mounting hole 42. An eccentric bearing 323 is provided in the first mounting hole 322. One end of the transmission shaft 41 is set in the eccentric bearing 323, and the other end of the transmission shaft 41 is rotatably set in the second mounting hole 42. The eccentricity of the eccentric bearing 323 is greater than the eccentricity of the eccentric shaft 15 to ensure no interference during operation. The rotational fit between the other end of the transmission shaft 41 and the second mounting hole 42 allows the transmission plate 4 to adjust its angle with the movement of the transmission shaft 41, avoiding stress concentration caused by rigid connection.

[0070] Unidirectional output and belt drive: A one-way clutch is provided on one side of the transmission plate 4. The transmission plate 4 is connected to the output shaft 14 through the one-way clutch. The one-way clutch ensures that the output shaft 14 can only rotate in one direction, avoiding damage to the device caused by reverse drive of the load. Compared with the one-way clutch layout of existing devices, this design has higher integration and is easier to install. Pulleys 16 are provided on the input shaft 13 and the output shaft 14, which can connect external power sources (such as engines) and loads (such as high-power equipment) via belts, expanding the adaptability of the device and meeting different transmission requirements.

[0071] The specific embodiments of the present invention have been described in detail above, but they are merely examples, and the present invention is not equivalent to the specific embodiments described above. For those skilled in the art, any equivalent modifications and substitutions to the present invention are also within the scope of the present invention. Therefore, all equivalent transformations and modifications made without departing from the spirit and scope of the present invention should be covered within the scope of the present invention.

Claims

1. An improved power output device, characterized in that, Includes an outer shell (1), a rotating unit (2), and a shock-absorbing unit (3); The outer shell (1) is provided with a partition plate (11), which divides the outer shell (1) into a first working chamber (111) and a second working chamber (112). An input shaft (13) and an output shaft (14) are respectively rotatably provided on both sides of the outer shell (1). An eccentric shaft (15) is rotatably provided on the partition plate (11). The shock absorption unit (3) is located in the first working chamber (111), and the rotating unit (2) is located in the second working chamber (112). One end of the input shaft (13) is connected to the rotating unit (2), and the other side of the rotating unit (2) is connected to the eccentric shaft (15). The eccentric shaft (15) is provided with a torque transmission plate (32). The damping unit (3) is set between the eccentric shaft (15) and the torque transmission plate (32). One side of the outer ring of the torque transmission plate (32) is rotatably connected to the transmission plate (4) through the transmission shaft (41). The center of the transmission plate (4) is coaxially connected to the output shaft (14). The input shaft (13) and output shaft (14) are coaxially arranged, and the eccentric shaft (15) is eccentrically arranged with respect to the input shaft (13) and output shaft (14); The damping unit (3) includes two damping plates (31) and several damping springs (33). The damping plates (31) are sleeved on the eccentric shaft (15). The two damping plates (31) are fixed at both ends. The torque transmission plate (32) is set between the two damping plates (31). Several damping springs (33) are installed in a circumferential array along the eccentric shaft (15) between the torque transmission plate (32) and the damping plates (31). The damping springs (33) connect the damping plates (31) and the torque transmission plate (32). The rotating unit (2) includes a rotating box (21), a motor (22), and a multi-stage transmission assembly (23). The motor (22) and the multi-stage transmission assembly (23) are arranged inside the rotating box (21). The multi-stage transmission assembly (23) connects the output end of the motor (22) to the eccentric shaft (15).

2. The improved power output device according to claim 1, characterized in that, A gap is provided between the damping plate (31) and the torque transmission plate (32). The torque transmission plate (32) has a plurality of rectangular holes (321) arranged in a circular array along the eccentric shaft (15). The inner sides of the two damping plates (31) are provided with rectangular grooves (311). The rectangular holes (321) and the rectangular grooves (311) cooperate to form a mounting groove. The damping spring (33) is set on the mounting groove.

3. The improved power output device according to claim 1, characterized in that, The rotating housing (21) is provided with a first mounting cavity (211) and a second mounting cavity (212). The motor (22) is fixed in the second mounting cavity (212). The multi-stage transmission assembly (23) includes a driving gear (231), a driven gear (232), and a transmission gear set. The driving gear (231) is located on the output end of the motor (22), the driven gear (232) is located on the eccentric shaft (15), and the transmission gear set includes a transmission shaft (233). A first transmission wheel (234) and a second transmission wheel (235) are rotatably disposed in a first mounting cavity (211) on a transmission shaft (233). The first transmission wheel (234) and the second transmission wheel (235) are disposed on the transmission shaft (233). The outer diameter of the first transmission wheel (234) is smaller than the outer diameter of the second transmission wheel (235). The first transmission wheel (234) meshes with the driven gear (232), and the second transmission wheel (235) meshes with the driving gear (231).

4. An improved power output device according to claim 3, characterized in that, The rotating unit (2) also includes an eccentric sleeve (151), which is rotatably connected to the side wall of the rotating box (21) and the partition plate (11). The outer diameter axis of the eccentric sleeve (151) is coaxial with the axis of the input shaft (13) and the output shaft (14). The eccentric sleeve (151) has an eccentric hole (152) inside. The eccentric shaft (15) passes through the eccentric hole (152), and the driven gear (232) is set on the through end of the eccentric shaft (15).

5. An improved power output device according to claim 3, characterized in that, The input shaft (13) has a cylindrical structure. The end of the input shaft (13) is fixed to one side of the rotating box (21). An integrated conductive ring (132) is provided at the end of the input shaft (13). A wire (131) is fixed inside the input shaft (13). The integrated conductive ring (132) is electrically connected to the motor (22). The conductive ring is connected to an external power source through the wire (131).

6. An improved power output device according to claim 4, characterized in that, The torque transmission plate (32) and the transmission plate (4) are respectively provided with a first mounting hole (322) and a second mounting hole (42) at both ends. The transmission shaft (41) is set on the first mounting hole (322) and the second mounting hole (42) at the same end. An eccentric bearing (323) is provided on the first mounting hole (322). One end of the transmission shaft (41) is set on the eccentric bearing (323), and the other end of the transmission shaft (41) is rotatably set on the second mounting hole (42). The eccentricity of the eccentric bearing (323) is greater than the eccentricity of the eccentric shaft (15).

7. An improved power output device according to claim 3, characterized in that, The first mounting cavity (211) is provided with a top cover (213).

8. An improved power output device according to claim 1, characterized in that, A rotary bearing (17) is provided between the input shaft (13), the output shaft (14), the eccentric shaft (15) and the outer casing (1), and the rotary bearing (17) is supported and fixed by the bearing seat (12).

9. An improved power output device according to claim 1, characterized in that, A one-way clutch is provided on one side of the transmission plate (4), and the transmission plate (4) is connected to the output shaft (14) through the one-way clutch.

10. An improved power output device according to claim 1, characterized in that, The input shaft (13) and output shaft (14) are equipped with pulleys (16).

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