Transmission assembly, seat folding mechanism and vehicle

Abstract

The utility model relates to vehicle parts technical field, specifically disclose a kind of transmission assembly, seat folding mechanism and vehicle, transmission assembly includes motor, cycloidal pin wheel speed reducer and transmission shaft, motor includes motor shell and rotor shaft, rotor shaft rotation is arranged in motor shell, cycloidal pin wheel speed reducer includes speed reduction shell, eccentric sleeve, speed reduction transmission assembly and output flange, motor shell is fixedly connected with speed reduction shell, eccentric sleeve with the speed reduction transmission assembly is arranged in speed reduction shell, eccentric sleeve is connected output flange by the speed reduction transmission assembly, eccentric sleeve is provided with through-hole, transmission shaft first end is fixedly connected with rotor shaft, second end is fixedly inserted in the first end of through-hole;Seat folding mechanism includes above-mentioned transmission assembly, vehicle includes above-mentioned seat folding mechanism.The utility model provides transmission assembly, compact structure, reduce axial space, ensure transmission efficiency, can be efficiently arranged in seat folding mechanism and vehicle.

Description

Technical Field

[0001] This utility model relates to the field of vehicle parts technology, and in particular to a transmission component, a seat folding mechanism, and a vehicle. Background Technology

[0002] In the field of electric folding car seats, traditional folding mechanisms are generally powered by brushed motors and reduced in speed and torque by conventional gear reducers. A worm gear transmission mechanism is typically installed between the brushed motor and the gear reducer. However, this structure has several inherent drawbacks: the worm gear transmission process suffers from high frictional losses and low energy conversion efficiency, increasing energy consumption and causing slow response times, making it difficult to meet users' demands for smooth and timely seat folding. Furthermore, the worm gear meshing transmission is prone to generating significant vibration and noise, affecting passenger comfort. In addition, the worm gear connection between the brushed motor and gear reducer results in a loose overall structure that occupies a large amount of space. With increasingly compact vehicle interiors, this reduces the space available for seat placement and the installation of other vehicle components, hindering the optimal utilization of overall vehicle space. Utility Model Content

[0003] The purpose of this utility model is to provide a transmission component with a compact structure, which effectively reduces axial space, ensures transmission efficiency, and facilitates efficient layout.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] A transmission assembly, comprising:

[0006] An electric motor includes a motor housing and a rotor shaft, the rotor shaft being rotatably disposed within the motor housing;

[0007] A cycloidal pinwheel reducer includes a reduction housing, an eccentric sleeve, a reduction transmission assembly, and an output flange. The motor housing is fixedly connected to the reduction housing. The eccentric sleeve and the reduction transmission assembly are disposed inside the reduction housing. The eccentric sleeve is connected to the output flange through the reduction transmission assembly. The eccentric sleeve has a through hole.

[0008] A drive shaft, the first end of which is fixedly connected to the rotor shaft, and the second end of which is fixedly inserted into the first end of the through hole.

[0009] Preferably, the drive shaft has a groove at one end away from the rotor shaft, a first connecting hole is provided at the bottom of the groove, the rotor shaft has a first mounting hole, and a first bolt passes through the first connecting hole and is threaded into the first mounting hole.

[0010] Preferably, a fixing key is provided between the drive shaft and the eccentric sleeve, a first keyway is provided on the outer peripheral wall of the drive shaft, a second keyway is provided on the inner peripheral wall of the through hole, and the fixing key is inserted into the first keyway and the second keyway.

[0011] Preferably, the system also includes an adapter plate, on which the motor housing is fixed, and the adapter plate is fixed to the reduction gear housing. The adapter plate has a through hole, through which the drive shaft passes and is fixedly connected to the rotor shaft.

[0012] Preferably, the motor housing has a second connecting hole, the adapter plate has a second mounting hole, and a second bolt passes through the second connecting hole and is threaded into the second mounting hole; and / or,

[0013] The deceleration housing has a third connecting hole, the adapter plate has a third mounting hole, and the third bolt passes through the third mounting hole and is threaded into the third connecting hole.

[0014] Preferably, the adapter plate has a positioning groove, the motor housing is inserted into the positioning groove, and the second mounting hole is opened at the bottom of the positioning groove.

[0015] This utility model also provides a seat folding mechanism, which includes the above-mentioned transmission components, effectively simplifying the structure, ensuring transmission efficiency, reducing space occupation, and facilitating efficient arrangement.

[0016] A seat folding mechanism, comprising the transmission component described in any one of the above claims, further comprising:

[0017] A connecting shaft, the first end of which is fixedly connected to the output flange, and the second end of which is fixedly connected to the seat body.

[0018] Preferably, the assembly also includes a bearing, wherein the through hole is interference-fitted onto the outer ring of the bearing, and the first end of the connecting shaft has a plug-in shaft portion, which passes through the output flange and is fixedly plugged into the inner ring of the bearing.

[0019] Preferably, the first end of the connecting shaft also has a sleeve shaft portion, the insertion shaft portion is located at the end of the sleeve shaft portion, and the output flange is fixedly sleeved on the sleeve shaft portion.

[0020] This utility model also provides a vehicle that includes the above-mentioned seat folding mechanism, which effectively simplifies the structure, ensures transmission efficiency, reduces space occupation, and facilitates efficient layout.

[0021] A vehicle includes the seat folding mechanism described in any one of the above claims, and also includes a vehicle body, wherein a seat bracket is fixedly mounted on the vehicle body, the seat body is rotatably connected to the seat bracket, and the reduction housing is fixedly connected to the seat bracket.

[0022] Beneficial effects:

[0023] The transmission component provided by this utility model, by opening a through hole in the eccentric sleeve of the cycloidal pinwheel reducer, allows the transmission shaft to directly pass through the through hole and be fixedly connected to the motor rotor shaft. This integrates the motor power output end and the reducer power input end into a coaxial structure, completely eliminating intermediate connecting components such as couplings and transition shafts in traditional transmission schemes. This significantly reduces the axial space occupied by the component, making it suitable for confined installation scenarios and providing greater freedom in the overall equipment layout. It is particularly suitable for applications with stringent space utilization requirements, such as automotive and precision machinery. Furthermore, the coaxial direct-connection structure eliminates energy loss in intermediate transmission links. Combined with the low-loss transmission characteristics of the cycloidal pinwheel reducer itself, this further enhances power transmission efficiency. By eliminating components such as worm gears that easily generate vibration and noise, the vibration and noise during component operation are significantly reduced, ensuring both transmission accuracy and reliability. This allows for long-term stable output of the reduced-torque power.

[0024] The seat folding mechanism provided by this utility model includes the aforementioned transmission components, which effectively reduces energy loss during transmission and significantly improves transmission efficiency. It can achieve seat folding action with more efficient power transmission, reducing energy consumption while improving the mechanism's response speed. While effectively ensuring power output and deceleration torque amplification functions, it greatly compresses the overall space occupied by the mechanism, making it suitable for more confined installation scenarios. It leaves more room for seat arrangement and other components in the limited vehicle interior space, optimizing the utilization of vehicle interior space.

[0025] The vehicle provided by this utility model includes the aforementioned seat folding mechanism, which provides more room for seat arrangement and other components within the limited interior space, thus optimizing the utilization of interior space. Attached Figure Description

[0026] Figure 1 A cross-sectional schematic diagram of the transmission component provided by this utility model;

[0027] Figure 2 A schematic diagram of the seat folding mechanism provided by this utility model;

[0028] Figure 3 An exploded view of a portion of the seat folding mechanism provided by this utility model;

[0029] Figure 4 Schematic diagram of the seat body and seat support structure provided by this utility model;

[0030] Figure 5 Exploded view of the drive shaft, eccentric sleeve, and fixing key provided by this utility model.

[0031] In the picture:

[0032] 100. Seat body; 200. Seat bracket;

[0033] 1. Motor; 11. Motor housing; 111. Second connecting hole; 12. Stator; 13. Rotor; 14. Rotor shaft; 141. First mounting hole;

[0034] 2. Cycloidal pinwheel reducer; 21. Reducer housing; 211. Third connecting hole; 22. Eccentric sleeve; 221. Through hole; 222. Second keyway; 23. Output flange; 24. Bearing; 25. Mounting plate;

[0035] 3. Drive shaft; 31. Groove; 311. First connecting hole; 32. Fixing key; 33. First keyway;

[0036] 4. Adapter plate; 41. Through hole; 42. Second mounting hole; 43. Third mounting hole; 44. Positioning groove;

[0037] 51. First bolt; 52. Second bolt; 53. Third bolt; 54. Fourth bolt; 55. First locating pin; 56. Second locating pin;

[0038] 6. Connecting shaft; 61. Inserting shaft part; 62. Sleeving shaft part. Detailed Implementation

[0039] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0040] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for 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. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions. Moreover, "above," "on top of," and "over" the first feature in relation to the second feature includes the first feature directly above and diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature includes the first feature directly below and diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0041] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 this utility model based on the specific circumstances.

[0042] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0043] This embodiment provides a transmission assembly. (Refer to...) Figures 1 to 5 As shown, the transmission assembly includes a motor 1, a cycloidal pinwheel reducer 2, and a transmission shaft 3. The motor 1 includes a motor housing 11 and a rotor shaft 14, with the rotor shaft 14 rotatably passing through the motor housing 11. The cycloidal pinwheel reducer 2 includes a reduction housing 21, an eccentric sleeve 22, a reduction transmission assembly, and an output flange 23. The motor housing 11 is fixedly connected to the reduction housing 21. The eccentric sleeve 22 and the reduction transmission assembly are located within the reduction housing 21. The eccentric sleeve 22 is connected to the output flange 23 via the reduction transmission assembly, and the eccentric sleeve 22 has a through hole 221. The first end of the transmission shaft 3 is fixedly connected to the rotor shaft 14, and the second end of the transmission shaft 3 is fixedly inserted into the first end of the through hole 221.

[0044] In this embodiment, the rotation of the rotor shaft 14 drives the eccentric sleeve 22 to rotate. The rotation of the eccentric sleeve 22, through a speed reduction transmission assembly, achieves speed reduction and torque amplification, thereby driving the output flange 23 to output power at a slower speed. The eccentric sleeve 22 has a through hole 221, into which the second end of the transmission shaft 3 extends and remains fixed. This makes the connection structure between the rotor shaft 14 and the eccentric sleeve 22 compact, reducing axial space, achieving coaxial arrangement, ensuring transmission efficiency, and facilitating efficient layout. Furthermore, this mechanism eliminates transmission components such as worm gears, simplifying the structure, improving transmission efficiency, and reducing noise and vibration during transmission.

[0045] For example, in this embodiment, the motor 1 is configured as a brushless external rotor motor. Specifically, the motor 1 also includes a stator 12 and a rotor 13. The stator 12 is fixed inside the motor housing 11, the rotor 13 is rotatably sleeved on the stator 12, and the rotor shaft 14 is fixed to the rotor 13. The rotor shaft 14 passes through the motor housing 11 and is rotatably connected to the motor housing 11.

[0046] It is understandable that the speed reduction transmission assembly of the cycloidal pinwheel reducer 2 includes components such as cycloidal wheel, pin tooth pin, and pin tooth sleeve. Its speed reduction and torque increase principle is existing technology and will not be elaborated on here.

[0047] In this embodiment, a groove 31 is provided at the end of the drive shaft 3 facing away from the rotor shaft 14. A first connecting hole 311 is provided at the bottom of the groove 31, and a first mounting hole 141 is provided on the rotor shaft 14. A first bolt 51 passes through the first connecting hole 311 and is threaded into the first mounting hole 141. By providing a groove 31 in the drive shaft 3 and threading the first bolt 51 through the first connecting hole 311 into the first mounting hole 141, the bolt head of the first bolt 51 is located within the groove 31. The groove 31 fully utilizes the internal space of the drive shaft 3, reduces the length of the first connecting hole 311, and provides reliable and effective protection for the first bolt 51. In this embodiment, multiple first connecting holes 311, first mounting holes 141, and first bolts 51 are provided in a one-to-one correspondence, ensuring a reliable and stable fixed connection between the drive shaft 3 and the rotor shaft 14.

[0048] In this embodiment, a fixing key 32 is provided between the drive shaft 3 and the eccentric sleeve 22. A first keyway 33 is formed on the outer peripheral wall of the drive shaft 3, and a second keyway 222 is formed on the inner peripheral wall of the through hole 221. The fixing key 32 is inserted into both the first keyway 33 and the second keyway 222. Specifically, the fixing key 32 is inserted into both the first keyway 33 and the second keyway 222, which effectively prevents axial rotation between the drive shaft 3 and the eccentric sleeve 22, avoids relative rotation of the drive shaft 3 relative to the axis of the eccentric sleeve 22, and ensures reliable and stable power transmission. When the fixing key 32 is inserted into the first keyway 33 and the second keyway 222, one side of the fixing key 32 is engaged between the two side walls of the first keyway 33, and the other side is engaged between the two side walls of the second keyway 222. When either the drive shaft 3 or the eccentric sleeve 22 rotates, the fixing key 32 can drive the other to rotate synchronously, thereby effectively preventing axial rotation between the drive shaft 3 and the eccentric sleeve 22, avoiding relative rotation of the drive shaft 3 relative to the axis of the eccentric sleeve 22, and ensuring reliable and stable power transmission.

[0049] In this embodiment, the transmission assembly further includes an adapter plate 4. The motor housing 11 is fixed to the adapter plate 4, and the adapter plate 4 is fixed to the reduction housing 21. The adapter plate 4 has a through hole 41, through which the transmission shaft 3 passes and is fixedly connected to the rotor shaft 14. The adapter plate 4 serves as a medium for the installation between the motor 1 and the cycloidal pinwheel reducer 2. The motor housing 11 of the motor 1 is fixed to the adapter plate 4, and then together with the adapter plate 4, it is fixed to the reduction housing 21. In addition, the through hole 41 on the adapter plate 4 allows the transmission shaft 3 to pass through, thus avoiding interference with the connection between the transmission shaft 3 and the rotor shaft 14.

[0050] Furthermore, the motor housing 11 has a second connecting hole 111, and the adapter plate 4 has a second mounting hole 42. The second bolt 52 passes through the second connecting hole 111 and is threaded into the second mounting hole 42. In this embodiment, multiple second connecting holes 111, second mounting holes 42, and second bolts 52 are provided in a one-to-one correspondence. The multiple second connecting holes 111 are evenly spaced along the circumference of the motor housing 11, and the second mounting holes 42 are evenly spaced along the circumference of the adapter plate 4. This arrangement ensures that the fixed connection between the motor housing 11 and the adapter plate 4 is reliable and stable.

[0051] Furthermore, the reduction gear housing 21 has a third connecting hole 211, and the adapter plate 4 has a third mounting hole 43. The third bolt 53 passes through the third mounting hole 43 and is threaded into the third connecting hole 211. In this embodiment, multiple third connecting holes 211, third mounting holes 43, and third bolts 53 are provided in a one-to-one correspondence. The multiple third connecting holes 211 are evenly spaced along the circumference of the reduction gear housing 21, and the third mounting holes 43 are evenly spaced along the circumference of the adapter plate 4. This arrangement ensures that the fixed connection between the reduction gear housing 21 and the adapter plate 4 is reliable and stable.

[0052] It is worth mentioning that in some optional embodiments, the motor housing 11 and the adapter plate 4 can be fixed by simply using the second bolt 52 to pass through the second connecting hole 111 and threaded to the second mounting hole 42. Alternatively, the third bolt 53 can pass through the third mounting hole 43 and threaded to the third connecting hole 211. Both of the above technical solutions can also be used simultaneously.

[0053] Furthermore, the adapter plate 4 has a positioning groove 44, into which the motor housing 11 is partially inserted. The second mounting hole 42 is located at the bottom of the positioning groove 44. By providing a positioning groove 44 in the adapter plate 4, it is easier to quickly position the motor housing 11 and the adapter plate 4 during installation, thereby improving assembly efficiency and facilitating the subsequent installation of the second bolt 52.

[0054] Specifically, the adapter plate 4 and the deceleration housing 21 can be positioned by the first positioning pin 55, which facilitates the subsequent installation of the third bolt 53.

[0055] This embodiment also provides a seat folding mechanism. The seat folding mechanism includes the transmission assembly described above. (Refer to...) Figures 1 to 5 As shown, the seat folding mechanism also includes a connecting shaft 6. The first end of the connecting shaft 6 is fixedly connected to the output flange 23, and the second end of the connecting shaft 6 is fixedly connected to the seat body 100. Specifically, the rotation of the decelerated output flange 23 can drive the seat body 100 to swing through the connecting shaft 6, thereby adjusting the seat folding angle. The seat folding mechanism includes the aforementioned transmission components, which effectively reduces energy loss during transmission, significantly improves transmission efficiency, and enables seat folding action with more efficient power transmission. While reducing energy consumption, it also improves the mechanism's response speed. While effectively ensuring power output and deceleration torque amplification functions, it greatly reduces the overall space occupied by the mechanism, making it suitable for more confined installation scenarios. It leaves more room for seat arrangement and other components in the limited interior space of the vehicle, optimizing the utilization of interior space.

[0056] In this embodiment, the seat folding mechanism further includes a bearing 24. A through hole 221 is interference-fitted onto the outer ring of the bearing 24. The first end of the connecting shaft 6 has a plug-in shaft portion 61, which passes through an output flange 23 and is fixedly plugged into the inner ring of the bearing 24. Specifically, the bearing 24 provides support for the first end of the connecting shaft 6, i.e., the plug-in shaft portion 61, and also enables a rotational fit between the connecting shaft 6 and the eccentric sleeve 22, ensuring reliable and effective rotation of the connecting shaft 6.

[0057] Furthermore, the first end of the connecting shaft 6 also has a sleeve shaft portion 62, with an insertion shaft portion 61 located at the end of the sleeve shaft portion 62, and an output flange 23 fixedly sleeved on the sleeve shaft portion 62. Specifically, the output flange 23 has a sleeve hole, through which the output flange 23 can be interference-fitted onto the sleeve shaft portion 62, and an axial relative anti-rotation structure can also be added between the output flange 23 and the sleeve shaft portion 62 to ensure reliable and stable power transmission.

[0058] This embodiment also provides a vehicle. The vehicle includes the aforementioned seat folding mechanism and a vehicle body. A seat bracket 200 is fixedly mounted on the vehicle body. The seat body 100 is rotatably connected to the seat bracket 200, and a reduction housing 21 is fixedly connected to the seat bracket 200. Specifically, a mounting plate 25 is fixedly mounted on the reduction housing 21, and the mounting plate 25 is fixedly connected to the seat bracket 200.

[0059] Specifically, the mounting plate 25 and the reduction gear housing 21 are fixedly connected by the fourth bolt 54.

[0060] Specifically, the mounting plate 25 and the reduction gear housing 21 can be positioned by the second locating pin 56, which facilitates the subsequent installation of the fourth bolt 54.

[0061] Specifically, the vehicle includes the aforementioned seat folding mechanism, thus possessing all the beneficial effects of such a mechanism. The transmission structure is significantly simplified. By eliminating traditional transmission components such as worm gears and adopting a transmission scheme where the motor 1 and cycloidal pinwheel reducer 2 directly cooperate, energy loss during transmission is effectively reduced, vibration and noise are lowered, and transmission efficiency is significantly improved. This allows for more efficient power transmission to achieve seat folding, reducing energy consumption while improving the mechanism's response speed. Furthermore, the improved mechanism achieves a compact layout. The motor 1 and cycloidal pinwheel reducer 2 are arranged coaxially, with the motor housing 11 and reducer housing 21 fixedly connected. While effectively ensuring power output and deceleration torque amplification functions, this greatly reduces the overall space occupied by the mechanism, making it suitable for more confined installation scenarios. It also leaves more room for seat arrangement and other components within the limited interior space, optimizing the utilization of interior space.

[0062] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A transmission component, characterized in that, include: The motor (1) includes a motor housing (11) and a rotor shaft (14), the rotor shaft (14) being rotatably inserted through the motor housing (11). The cycloidal pinwheel reducer (2) includes a reduction housing (21), an eccentric sleeve (22), a reduction transmission assembly, and an output flange (23). The motor housing (11) is fixedly connected to the reduction housing (21). The eccentric sleeve (22) and the reduction transmission assembly are disposed inside the reduction housing (21). The eccentric sleeve (22) is connected to the output flange (23) through the reduction transmission assembly. The eccentric sleeve (22) has a through hole (221). The transmission shaft (3) has its first end fixedly connected to the rotor shaft (14), and its second end fixedly inserted into the first end of the through hole (221). The drive shaft (3) has a groove (31) at one end away from the rotor shaft (14), a first connecting hole (311) is provided at the bottom of the groove (31), the rotor shaft (14) has a first mounting hole (141), and a first bolt (51) passes through the first connecting hole (311) and is threaded to the first mounting hole (141). A fixing key (32) is provided between the drive shaft (3) and the eccentric sleeve (22). A first keyway (33) is provided on the outer peripheral wall of the drive shaft (3), and a second keyway (222) is provided on the inner peripheral wall of the through hole (221). The fixing key (32) is inserted into the first keyway (33) and the second keyway (222).

2. The transmission assembly according to claim 1, characterized in that, It also includes a transition plate (4), the motor housing (11) is fixed on the transition plate (4), the transition plate (4) is fixed on the deceleration housing (21), the transition plate (4) has a through hole (41), the transmission shaft (3) passes through the through hole (41) and is fixedly connected to the rotor shaft (14).

3. The transmission assembly according to claim 2, characterized in that, The motor housing (11) has a second connecting hole (111), the adapter plate (4) has a second mounting hole (42), and the second bolt (52) passes through the second connecting hole (111) and is threaded into the second mounting hole (42); and / or, The deceleration housing (21) has a third connecting hole (211), the adapter plate (4) has a third mounting hole (43), and the third bolt (53) passes through the third mounting hole (43) and is threaded to the third connecting hole (211).

4. The transmission assembly according to claim 3, characterized in that, The adapter plate (4) has a positioning groove (44), the motor housing (11) is partially inserted into the positioning groove (44), and the second mounting hole (42) is opened at the bottom of the positioning groove (44).

5. A seat folding mechanism, characterized in that, Including the transmission assembly according to any one of claims 1-4, further comprising: A connecting shaft (6) is fixedly connected at its first end to the output flange (23) and at its second end to the seat body (100).

6. The seat folding mechanism according to claim 5, characterized in that, It also includes a bearing (24), the through hole (221) is interference-fitted to the outer ring of the bearing (24), and the first end of the connecting shaft (6) has a plug-in shaft portion (61), the plug-in shaft portion (61) passes through the output flange (23) and is fixedly plugged into the inner ring of the bearing (24).

7. The seat folding mechanism according to claim 6, characterized in that, The first end of the connecting shaft (6) also has a sleeve shaft portion (62), the insertion shaft portion (61) is located at the end of the sleeve shaft portion (62), and the output flange (23) is fixedly sleeved on the sleeve shaft portion (62).

8. A vehicle, characterized in that, The system includes the seat folding mechanism according to any one of claims 5-7, and also includes a vehicle body, wherein a seat bracket (200) is fixedly provided on the vehicle body, the seat body (100) is rotatably connected to the seat bracket (200), and the reduction housing (21) is fixedly connected to the seat bracket (200).

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