A deceleration motor, pedal assembly and vehicle

Abstract

The application discloses a speed reduction motor, a pedal assembly and a vehicle. The speed reduction motor comprises a motor, a planetary gear assembly, a sliding block assembly, an outer gear and an output assembly. The planetary gear assembly comprises a sun gear and a planetary carrier shaft. The planetary carrier shaft is an eccentric shaft. The motor is suitable for driving the sun gear to rotate. The rotation of the sun gear drives the planetary carrier shaft to perform eccentric motion. The sliding block assembly is provided with a first through hole. The planetary carrier shaft passes through the first through hole. The outer gear comprises a second through hole. The planetary carrier shaft passes through the second through hole to drive the outer gear to move. The sliding block assembly cooperates with the outer gear to limit the rotation of the outer gear and enables the outer gear to perform revolution motion relative to the axis of the planetary gear assembly. The output assembly is provided with an inner gear. The inner gear is engaged with the outer gear. The revolution of the outer gear drives the output assembly to rotate and output, so that the speed reduction and torque increasing effect is realized. The motor has the advantages of less components and compact structure.

Description

Technical Field

[0001] This application relates to the field of electric motors, and more specifically, to a geared motor, a pedal assembly, and a vehicle. Background Technology

[0002] In related technologies, the transmission structure of the drive motor of the moving parts of automobiles, especially the pedal parts, usually adopts a multi-stage worm gear transmission method. Although this structure can achieve the functions of deceleration and transmission, the worm gear transmission structure is complex, has many parts, and requires high assembly precision, which leads to increased manufacturing and assembly costs. Summary of the Invention

[0003] This application aims to at least partially solve one of the technical problems in the related art. To this end, one object of this application is to provide a geared motor that restricts the rotation of the external gear through the cooperation of the slider assembly and the external gear, and causes the external gear to revolve relative to the axis of the planetary gear assembly. The external gear meshes with the internal gear in the output assembly, driving the transmission assembly to rotate and output, thereby achieving a speed reduction and torque increase effect.

[0004] To achieve the above objectives, a first aspect of this application provides a geared motor, comprising: a motor, a planetary gear assembly, a slider assembly, an external gear, and an output assembly. The planetary gear assembly includes a sun gear and a planet carrier shaft, the planet carrier shaft being an eccentric shaft. The motor is adapted to drive the sun gear to rotate, and the rotation of the sun gear causes the planet carrier shaft to perform eccentric motion. The slider assembly has a first through hole through which the planet carrier shaft passes. The external gear includes a second through hole through which the planet carrier shaft passes to drive the external gear to move. The slider assembly cooperates with the external gear to restrict the external gear's rotation and cause the external gear to revolve relative to the axis of the planetary gear assembly. The output assembly has an internal gear that meshes with the external gear, and the revolution of the external gear drives the output assembly to rotate and output. The beneficial effects of the above scheme are: the eccentric motion of the planetary carrier shaft drives the external gear to revolve, and the slider assembly restricts the external gear's rotation and provides eccentric compensation for the external gear's revolution. The external gear meshes with the internal gear in the output assembly, driving the transmission assembly to rotate and output, ultimately achieving deceleration output. The number of parts used is small, and the motor structure is compact.

[0005] In some embodiments, one of the slider assembly and the external gear is provided with a groove, and the other is provided with a boss, the boss being adapted to penetrate into the groove to restrict the rotation of the external gear.

[0006] In some embodiments, the slider assembly includes a slider and a slider guide, the slider being slidable relative to the slider guide in a first direction, the slider having the groove, the external gear having the boss on the side facing the slider, the groove extending in a second direction, and the boss being adapted to penetrate the groove so that the external gear can slide along the groove.

[0007] In some embodiments, the slider guide is provided with a receiving groove that at least partially accommodates the slider, the length of the receiving groove in the first direction being greater than the length of the slider in the first direction, so that the slider can slide relative to the slider guide in the first direction.

[0008] In some embodiments, the first through hole includes an elliptical through hole formed by the slider, wherein the minor axis of the elliptical through hole is in the first direction and the major axis of the elliptical through hole is in the second direction; the planetary carrier shaft drives the external gear to move, so that the external gear moves with the slider in the first direction and moves along the groove in the second direction.

[0009] In some embodiments, the geared motor further includes a housing, one of the housing and the slider guide being provided with a first positioning groove, and the other being provided with a first positioning boss, the first positioning boss being adapted to extend into the first positioning groove to limit the circumferential position of the slider guide.

[0010] In some embodiments, the planetary gear assembly further includes planetary gears and an internal gear ring, wherein the planetary gears are disposed on the internal gear ring and mesh with the internal gear ring; the planetary gears are fixedly connected to the planet carrier shaft, and the sun gear drives the planetary gears to rotate so as to drive the planet carrier shaft to perform eccentric motion.

[0011] In some embodiments, one of the housing and the internal gear ring is provided with a second positioning groove, and the other is provided with a second positioning boss, the second positioning boss being adapted to penetrate into the second positioning groove to limit the circumferential position of the internal gear ring.

[0012] In some embodiments, the output component further includes an output shaft, which is fixedly connected to the internal gear, and the portion of the internal gear connected to the output shaft has a slot; a positioning ball is at least partially embedded in the slot, and the positioning ball abuts against the planetary carrier shaft to limit the axial position of the planetary carrier shaft.

[0013] In some embodiments, the geared motor further includes a housing, in which the planetary gear assembly, the slider assembly, and the external gear are disposed; and an end cover having a third through hole through which the output shaft is adapted to pass, the end cover being fixedly connected to the housing.

[0014] A second aspect of this application provides a pedal assembly including a geared motor as described in any one of the first aspects above, wherein the output shaft of the geared motor is connected to the pedal to drive pedal movement.

[0015] A third aspect of this application proposes a vehicle that includes a geared motor as described in any one of the first aspects above, or includes a pedal assembly as described in the second aspect above. Attached Figure Description

[0016] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0017] Figure 1 This is a schematic diagram of the overall composition and structure of the geared motor provided in an exemplary embodiment of this application;

[0018] Figure 2 This is a schematic diagram of the planetary gear assembly structure provided in an exemplary embodiment of this application;

[0019] Figure 3 This is a schematic diagram of the structure of the sun gear, planet gears and internal gear ring in the planetary gear assembly provided in the exemplary embodiment of this application;

[0020] Figure 4 This is a schematic diagram of the planetary carrier structure in the planetary gear assembly provided in an exemplary embodiment of this application;

[0021] Figure 5 This is a schematic diagram of the structure of the slider assembly provided in an exemplary embodiment of this application;

[0022] Figure 6 This is a schematic diagram of the slider structure in the slider assembly provided in an exemplary embodiment of this application;

[0023] Figure 7 This is a schematic diagram of the structure of the slider guide in the slider assembly provided in an exemplary embodiment of this application;

[0024] Figure 8 This is a schematic diagram of the external gear provided in an exemplary embodiment of this application;

[0025] Figure 9 This is a schematic diagram of the structure of the output component provided in an exemplary embodiment of this application;

[0026] Figure 10 This is a schematic diagram of the structure of the housing provided in an exemplary embodiment of this application;

[0027] Figure 11 This is a schematic diagram of the structure of the housing provided in an exemplary embodiment of this application;

[0028] Figure 12 This is a schematic diagram of the end cap structure provided in an exemplary embodiment of this application;

[0029] Figure 13 This is a cross-sectional view of the geared motor provided in an exemplary embodiment of this application;

[0030] Reference numerals: 100 Motor, 300 Housing, 400 Planetary gear assembly, 500 Slider assembly, 600 External gear, 800 Output assembly, 700 End cover, 401 Sun gear, 402 Planetary gear, 403 Planetary carrier shaft, 404 Internal gear ring, 405 Planetary carrier, 406 Pin, 407 Second locating boss, 408 Shoulder structure, 409 Through hole, 501 Slider, 502 Slider guide, 503 First through hole, 504 Receiving groove, 50 6. Elliptical through hole, 507. First positioning boss, 5012. Groove, 603. Second through hole, 6021. Boss, 801. Internal gear, 802. Positioning ball, 803. Flat washer, 804. Rubber pad, 805. Concave pad, 806. Output shaft, 807. Slot, 301. Second positioning groove, 302. First positioning groove, 304. Carbon brush plate assembly, 305. Stator assembly end seal ring, 701. Bearing, 702. Sealing ring, 704. Oil seal, 705. Third through hole. Detailed Implementation

[0031] The embodiments of this application 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 application, and should not be construed as limiting this application.

[0032] In the description of this application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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. Therefore, they should not be construed as limitations on this application.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0034] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0035] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0036] The present application will now be described in detail with reference to the accompanying drawings and embodiments.

[0037] In some embodiments, such as Figures 1-12 The geared motor includes a motor 100, a planetary gear assembly 400, a slider assembly 500, an external gear 600, and an output assembly 800. The planetary gear assembly includes a sun gear 401 and a planetary carrier shaft 403. The motor 100 drives the sun gear 401 in the planetary gear assembly 400 to rotate. The planetary carrier shaft 403 is an eccentric shaft, and the eccentricity is the distance between the central axis of the planetary carrier shaft 403 and the central axis of the planetary gear assembly 400. The rotation of the sun gear 401 drives the planetary carrier shaft 403 to perform eccentric motion. The slider assembly 500 has a first through hole 503, and the external gear has a second through hole 603. The planetary carrier shaft 403 passes through the first through hole in sequence. 503 and the second through hole 603 drive the external gear 600 to rotate. The slider assembly 500 and the external gear 600, through a mutually cooperating structure, such as a concave-convex structure, effectively restrict the rotation of the external gear 500, causing the external gear 600 to revolve. The external gear 600 revolves around the central axis of the planetary gear assembly 400 under the drive of the planetary carrier shaft 403. The output assembly 800 includes an internal gear 801, and the external gear 600 meshes with the internal gear 801. The revolution of the external gear 600 drives the output assembly 800 to rotate, realizing deceleration output. Preferably, the deceleration effect is better when the external gear 600 and the internal gear 801 are in differential gear mesh.

[0038] In some embodiments, such as Figure 5As shown, the slider assembly 500 has a groove 5012, such as Figure 9 As shown, the external gear 600 has a boss 6021 on the side facing the slider assembly 500. The external gear 600 is restricted from rotating by the mating structure of the boss 6021 embedded in the groove 5012.

[0039] In some embodiments, the slider assembly 500 is provided with a boss, and the external gear 600 has a groove on the side facing the slider assembly 500. The rotation of the external gear 600 can also be restricted by the mating structure of the boss and the groove.

[0040] In some embodiments, such as Figures 5 to 7 As shown, the slider assembly 500 includes a slider 501 and a slider guide 502. The slider 501 is capable of sliding relative to the slider guide 502 in a first direction. The slider guide 502 allows the slider 501 to slide in the first direction, which is determined by the cooperative movement structure between the slider 501 and the slider guide 502. Figure 6 The first direction shown is an example of a first direction. The slider 501 slides relative to the slider guide 502 along this first direction, which can compensate for eccentricity and ensure the stability of the revolution of the external gear 600 connected to the slider 501. The slider 501 has a groove 5012, and the external gear 600 has a boss 6021 on the side facing the slider 501. The groove 5012 extends along a second direction. The direction in which the slider 501 remains stationary relative to the slider guide 502 is the second direction. The second direction intersects the first direction and is determined by the relatively stationary structure between the slider 501 and the slider guide 502. In some embodiments, the first and second directions are perpendicular to each other. Figure 6 The second direction shown is only an example of the second direction. The boss 6021 is embedded in the groove 5012 to form a sliding connection so that the external gear 600 can slide along the groove 5012, that is, the external gear 600 can slide along the second direction, thereby achieving the effect of compensating for eccentricity and ensuring the stability of the revolution of the external gear 600.

[0041] In some embodiments, such as Figures 5 to 7 As shown, the slider guide 502 is provided with a receiving groove 504, which at least partially accommodates the slider 501. The slider 501 abuts against the receiving groove 504 along the second direction, and the slider 501 remains stationary relative to the slider guide 502 in the second direction. The length of the receiving groove 504 along the first direction is greater than the length of the slider 501, allowing the slider 501 to slide relative to the slider guide 502 in the first direction. Through the design of the dimensions and structure between the receiving groove 504 and the slider 501, the sliding space of the slider 501 in the first direction and its relative stationary position in the second direction are ensured, effectively achieving eccentricity compensation and ensuring the stability of the external gear 600's revolution.

[0042] In some embodiments, such as Figures 5 to 7 As shown, the first through hole 503 includes an elliptical through hole 506 formed by the slider 501. The minor axis of the elliptical through hole 506 is the first direction, and the major axis of the elliptical through hole 506 is the second direction. The diameter of the major axis of the elliptical through hole 506 is the sum of the diameter of the planetary carrier shaft 403 and the eccentricity. The diameter of the minor axis of the elliptical through hole is the same as the diameter of the planetary carrier shaft 403. The planetary carrier shaft 403 drives the external gear 600 to perform circular motion around the central axis of the planetary gear assembly 400. When the external gear 600 rotates towards the minor axis of the elliptical through hole 506, the slider 501 connected to the external gear 600 slides relative to the slider guide 502 along the minor axis of the elliptical through hole 506. The slider 501 moves along the minor axis of the elliptical through hole 506. The maximum distance is the eccentricity. At this time, the diameter of the circular motion trajectory of the external gear 600 coincides with the minor axis of the elliptical through hole 506. When the external gear 600 rotates towards the major axis of the elliptical through hole 506, the external gear 600 slides along the groove 5012 in the direction of the major axis of the elliptical through hole 506. The maximum distance that the external gear 600 slides along the major axis of the elliptical through hole 506 is the eccentricity. At this time, the diameter of the circular motion trajectory of the external gear 600 coincides with the major axis of the elliptical through hole 506. In this embodiment, taking the minor axis direction of the elliptical through hole 506 as the first direction and the major axis direction of the elliptical through hole 506 as the second direction can better achieve eccentricity compensation and ensure better stability of the revolution of the external gear 600.

[0043] In some embodiments, such as Figure 1 , Figure 10 and Figure 13 As shown, the geared motor also includes a housing 300, which can accommodate the planetary gear assembly 400, the slider assembly 500, and the external gear 600. The inner wall of the housing 300 has first positioning grooves 302 distributed thereon. Figure 7 As shown, the slider guide 502 is provided with a first positioning boss 507, which is embedded in the first positioning groove 302 to limit the circumferential position of the slider guide 502; in some embodiments, the inner wall of the housing 300 is provided with positioning bosses and the slider guide 502 has positioning grooves, which can also achieve the effect of limiting the circumferential position of the slider guide 502.

[0044] In some embodiments, such as Figures 2 to 4As shown, the planetary gear assembly 400 also includes planetary gears 402, which are fixedly connected to the planetary carrier shaft 403. The sun gear 401 drives the planetary gears 402 to rotate, thereby causing the planetary carrier shaft 403 to perform eccentric motion. The fixed connection between the planetary gears 403 and the planetary carrier shaft 403 is achieved through a pin-hole structure. Specifically, the planetary gear assembly 400 also includes a planetary carrier 405. One side of the planetary carrier 405 has a pin 406, and the other side has a planetary carrier shaft 403 relative to the center of the planetary carrier. The planetary carrier shaft 403 is an eccentric shaft. The center of the planetary gears 402 has a through hole 409. The pin 406 is inserted into the through hole 409 to achieve the fixed connection between the planetary carrier 403 and the planetary gears 402. The rotation of the planetary gears 402 drives the planetary carrier 405 to rotate. At this time, the planetary carrier shaft 403 performs circular motion around the central axis of the planetary gear assembly 400. In some embodiments, such as Figure 4 As shown, a shoulder structure 408 is provided between the planetary carrier shaft 403 and the planetary carrier 405. The planetary carrier shaft 403 is fixed on the shoulder structure 408. The shoulder structure 408 can accurately realize the axial positioning of the eccentric shaft planetary carrier shaft 403.

[0045] In some embodiments, such as Figure 1 , Figure 10 and Figure 13 As shown, the geared motor also includes a housing 300, which can accommodate the planetary gear assembly 400, such as... Figure 2 As shown, the planetary gear assembly 400 also includes an internal gear ring 404, which meshes with the planet gears 402, as... Figure 3 As shown, the internal gear ring 404 has a second positioning boss 407, which is embedded in the second positioning groove 301 to fix the internal gear ring 404. In some embodiments, the inner wall of the housing 300 has positioning bosses, and the internal gear ring 404 has positioning grooves, which can also achieve the effect of fixing the internal gear ring 404. Through the structure of the planetary gear 402 meshing with the fixed internal gear ring 404, the high-speed, low-torque input of the sun gear 401 is converted into the low-speed output of the planetary carrier shaft 403, thus achieving speed reduction.

[0046] In some embodiments, such as Figure 9As shown, the output component 800 also includes an output shaft 806. An internal gear 801 is integrated with the output shaft 806. The internal gear 801 meshes with the external gear 600 with differential teeth. The external gear 600 drives the output shaft 806 to rotate by its revolution, thereby achieving deceleration. Preferably, the deceleration effect is better when the external gear 600 meshes with the internal gear 801 with differential teeth. The output component 800 also includes a positioning ball 802. A slot 807 is opened on the side where the internal gear 801 is integrated with the output shaft 805. During assembly, the positioning ball 802 is partially embedded in the slot 807, so that the part of the positioning ball 802 exposed in the slot 807 can abut against the planetary carrier shaft 403 to limit the axial position of the planetary carrier shaft 403. The positioning ball 802 is made of metal, and in some embodiments, the positioning ball 802 is made of steel.

[0047] In some embodiments, such as Figure 1 , Figure 9 , Figure 12 and Figure 13 As shown, in this embodiment, the geared motor also includes an end cover 700. The end cover 700 has a bearing 701, a third through hole 705, a sealing ring 702, and an oil seal 704. The bearing 701 is fixed to the end cover 700 by a bearing positioning step. The output shaft 806 passes through the bearing 701 and the third through hole 705 in sequence to transmit power to the outside. The end cover 700 and the housing 300 are fixedly connected by screws. When the end cover 700 and the housing 300 are assembled, the sealing ring 702 is compressed to meet the waterproof and dustproof requirements of the pedal motor. The oil seal 704 is pressed into the end cover 700 to meet the waterproof and dustproof requirements at the output shaft 806.

[0048] In some embodiments, such as Figure 9 As shown, the output assembly 800 also includes gaskets: a flat gasket 803, a rubber gasket 804, and a concave gasket 805. The rubber gasket 804 is located between the flat gasket 803 and the concave gasket 805. The flat surface of the concave gasket 805 is fixedly connected to the stepped surface of the output shaft 806. The concave part of the concave gasket 805 contacts the rubber gasket 804. The large diameter of the concave part is larger than the outer diameter of the rubber gasket 804, and the depth of the concave part is smaller than the thickness of the rubber gasket 804. The other side of the rubber gasket 804 contacts the flat gasket 803, and the other side of the flat gasket 803 contacts the end face of the bearing 701. After the geared motor is assembled, the outer diameter of the rubber gasket 804 increases after compression, but its outer diameter is equivalent to the inner diameter of the concave part of the concave gasket 805. When the motor is running, the rubber gasket 804 has no extra space to deform, and its volume is always restricted by the flat gasket 803 and the concave gasket 805 within the concave space of the concave gasket 805, thereby maintaining sufficient axial elasticity of the output shaft 806 to buffer the axial impact generated by the motor and achieve smooth and reliable motor operation.

[0049] In some embodiments, such as Figure 11As shown, the housing 300 also includes a carbon brush plate assembly 304 and a stator assembly end sealing ring 305. The carbon brush plate assembly 304 is fixed to the housing 300 by screws. The carbon brush plate assembly 304 includes a motor wiring harness assembly, a carbon brush holder, carbon brushes, and a PCB board. The carbon brush holder is installed in the carbon brush holder, and the carbon brush holder and wiring harness assembly are soldered onto the PCB board. The carbon brush plate assembly 304 is used to control the start and stop of the motor. The stator assembly end sealing ring 302 is assembled on the stop of the housing 300 and cooperates with the stator assembly of the motor 100 to form a suitable compression amount to meet the protection requirements of the motor 100.

[0050] The transmission process of the geared motor is as follows: The motor drives the sun gear 401 to rotate, which in turn drives the planet gear 402 to rotate. The planet gear 402 meshes with the fixed internal gear 404. The planet gear 402 is fixedly connected to the planet carrier 405. The planet gear 402 drives the planet carrier 405 to rotate, and the planet carrier shaft 403, which is offset above the planet carrier 405, undergoes eccentric motion. Through the meshing structure of the planet gear 402 and the fixed internal gear ring 404, the high-speed, low-torque input of the sun gear 401 is converted into the low-speed output of the planet carrier shaft 403, thus achieving first-stage reduction. The planet carrier shaft 403 passes through the first through hole 503 and the second through hole 603, driving the external gear 60. When the external gear 600 rotates, the positioning boss 6021 of the external gear 600 is embedded in the groove 5012 of the slider 501 and forms a sliding connection, thus restricting the rotation of the external gear 600. At the same time, the external gear 600 can slide along the groove 5012 in the direction of the long axis of the elliptical through hole 506. The external gear 600 can move along the direction of the short axis of the elliptical through hole 506 under the drive of the slider 501. The eccentricity compensation of the external gear 600 is realized through the cooperation between the slider assembly 500 and the external gear 600. The external gear 600 revolves around the axis of the planetary gear assembly 400 and meshes with the differential gear internal gear ring 801, driving the output shaft 806 to rotate, thus realizing the second stage of deceleration.

[0051] In some embodiments of this application, a pedal assembly is provided, which includes the aforementioned geared motor. This pedal assembly adopts all the technical solutions of all the above embodiments and therefore has at least the beneficial effects brought about by the technical solutions of the above embodiments.

[0052] In some embodiments of this application, a vehicle is provided, which includes the aforementioned geared motor or the aforementioned pedal assembly. The vehicle adopts all the technical solutions of all the above embodiments, and therefore has at least the beneficial effects brought about by the technical solutions of the above embodiments.

[0053] Other configurations and operations of the vehicle according to embodiments of this application are known to those skilled in the art and will not be described in detail here.

[0054] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0055] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A geared motor, characterized in that, include: Motor (100); A planetary gear assembly (400) includes a sun gear (401) and a planet carrier shaft (403). The planet carrier shaft (403) is an eccentric shaft. The motor (100) is adapted to drive the sun gear (401) to rotate. The rotation of the sun gear (401) drives the planet carrier shaft (403) to perform eccentric motion. A slider assembly (500) is provided with a first through hole (503), through which the planetary carrier shaft (403) passes; An external gear (600) includes a second through hole (603), through which the planetary carrier shaft (403) passes to drive the external gear (600) to move; the slider assembly (500) cooperates with the external gear (600) to restrict the rotation of the external gear (600) and to make the external gear (600) revolve relative to the axis of the planetary gear assembly (400); The output component (800) has an internal gear (801) that meshes with an external gear (600). The revolution of the external gear (600) drives the output component (800) to rotate and output.

2. The geared motor according to claim 1, characterized in that, The slider assembly (500) and the external gear (600) are provided with a groove (5012) on one and a boss (6021) on the other. The boss (6021) is adapted to penetrate into the groove (5012) to restrict the rotation of the external gear (600).

3. The geared motor according to claim 2, characterized in that, The slider assembly (500) includes a slider (501) and a slider guide (502). The slider (501) is slidable relative to the slider guide (502) in a first direction. The slider (501) is provided with the groove (5012). The external gear (600) is provided with the boss (6021) on the side facing the slider (501). The groove (5012) extends in a second direction. The boss (6021) is adapted to penetrate into the groove (5012) so that the external gear (600) can slide along the groove (5012).

4. The geared motor according to claim 3, characterized in that, The slider guide (502) is provided with a receiving groove (504) that at least partially accommodates the slider (501). The length of the receiving groove (504) in the first direction is greater than the length of the slider (501) in the first direction, so that the slider (501) can slide relative to the slider guide (502) in the first direction.

5. The geared motor according to claim 4, characterized in that, The first through hole (503) includes an elliptical through hole (506) opened by the slider (501), the minor axis of the elliptical through hole (506) is the first direction, and the major axis of the elliptical through hole (506) is the second direction; the planetary carrier shaft (403) drives the external gear (600) to move, so that the external gear (600) slides along the first direction with the slider (501) and slides along the groove (5012) in the second direction.

6. The geared motor according to claim 3, characterized in that, Also includes: The housing (300) and the slider guide (502) are provided with a first positioning groove (302) and the other is provided with a first positioning boss (507). The first positioning boss (507) is adapted to penetrate into the positioning groove (302) to limit the circumferential position of the slider guide (502).

7. The geared motor according to claim 6, characterized in that, The planetary gear assembly (400) further includes planetary gears (402) and an internal gear ring (404). The planetary gears (402) are disposed on the internal gear ring (404) and mesh with the internal gear ring (404). The planetary gears (402) are fixedly connected to the planet carrier shaft (403). The sun gear (401) drives the planetary gears (402) to rotate so as to drive the planet carrier shaft (403) to perform eccentric motion.

8. The geared motor according to claim 7, characterized in that, One of the housing (300) and the internal gear ring (404) is provided with a second positioning groove (301), and the other is provided with a second positioning boss (407). The second positioning boss (407) is adapted to penetrate into the second positioning groove (301) to limit the circumferential position of the internal gear ring (404).

9. The geared motor according to any one of claims 1-8, characterized in that, The output component (800) also includes: An output shaft (806) is fixedly connected to the internal gear (801), and a slot (807) is provided in the part of the internal gear (801) that is connected to the output shaft (805). A positioning ball (802) is at least partially embedded in the slot (807) and abuts against the planetary carrier shaft (403) to limit the axial position of the planetary carrier shaft (403).

10. The geared motor according to claim 9, characterized in that, include: The housing (300), the planetary gear assembly (400), the slider assembly (500) and the external gear (600) are disposed within the housing (300); An end cap (700) having a third through hole (705) through which the output shaft (806) is adapted to pass, and the end cap (700) being fixedly connected to the housing (300).

11. A pedal assembly, characterized in that, The device includes a geared motor according to any one of claims 1-10, wherein the output shaft (806) of the geared motor is connected to the pedal to drive the pedal movement.

12. A vehicle, characterized in that, It includes the geared motor according to any one of claims 1-10, or the pedal assembly according to claim 11.

Images