Gear motor, electric pedal and vehicle

Abstract

The utility model discloses a gear motor, an electric pedal and a vehicle. The speed reduction motor comprises a stator assembly, a rotor assembly, a speed reduction box and a buffer assembly, a part of structure of the rotor assembly is arranged in the stator assembly, the rotor assembly comprises a worm rotating shaft, the rotor assembly outputs torque through the worm rotating shaft, the speed reduction box is in transmission connection with the worm rotating shaft, and a worm part of the worm rotating shaft is arranged in the speed reduction box. The reduction gearbox is provided with a first end base, the end, away from the stator assembly, of the worm part is supported on the first end base, the buffering assembly is arranged on the first end base, and the worm part abuts against the buffering assembly. By means of the mode, the speed reducing motor can avoid abnormal sound generated when the pedal begins to be unfolded and retracted in place, and comfort of the electric pedal is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of automobile accessories, in particular to a reduction motor, an electric pedal and a vehicle. BACKGROUND

[0002] In order to assist the driver to conveniently enter and exit the vehicle cabin, a pedal is usually installed on the chassis. The pedal generally includes a fixed pedal and an electric pedal. The electric pedal is welcomed by the majority of users because it can not only automatically extend to assist the driver to conveniently enter and exit the vehicle cabin when the door is opened, but also automatically retract to ensure the passing performance and appearance of the vehicle when the door is closed. However, in the existing electric pedal, the reduction motor often has a large abnormal sound when the pedal begins to extend and retract to the position, thereby affecting the comfort of the electric pedal. CONTENT OF THE UTILITY MODEL

[0003] The reduction motor, the electric pedal and the vehicle provided by the present application can solve the problem of the large abnormal sound of the reduction motor when the pedal begins to extend and retract to the position in the prior art and affect the comfort.

[0004] To solve the above technical problems, one technical scheme adopted by the present application is to provide a reduction motor, which comprises: a stator assembly; a rotor assembly, part of the structure of the rotor assembly is arranged in the stator assembly and the rotor assembly can rotate relative to the stator assembly, the rotor assembly comprises a worm shaft, and the rotor assembly outputs torque through the worm shaft; a reduction box, the reduction box is in transmission connection with the worm shaft, a worm part of the worm shaft is arranged in the reduction box, the reduction box is provided with a first end seat, and an end of the worm part away from the stator assembly is supported on the first end seat; and a buffer assembly arranged on the first end seat, the worm part abuts against the buffer assembly.

[0005] In some embodiments, the buffer assembly comprises a first wear-resistant sheet and a buffer pad, the first end seat comprises a first accommodating groove and a second accommodating groove, the first accommodating groove and the second accommodating groove are communicated, the buffer pad is arranged in the first accommodating groove, the first wear-resistant sheet is arranged in the second accommodating groove, the first wear-resistant sheet abuts against the buffer pad, the worm part abuts against the first wear-resistant sheet, and a buffer gap exists between the first wear-resistant sheet and the groove bottom of the second accommodating groove.

[0006] In some embodiments, the buffer gap is greater than 0 mm and less than 1 mm.

[0007] In some embodiments, the material of the first wear-resistant sheet is carbon fiber, and the material of the buffer pad is rubber.

[0008] In some embodiments, a first guiding structure is arranged on the slot wall of the second accommodating slot, and a second guiding structure is arranged on the first wear-resistant sheet, the first guiding structure being in sliding connection with the second guiding structure.

[0009] In some embodiments, the first guiding structure is a protruding structure, and the second guiding structure is a groove structure.

[0010] In some embodiments, the first end seat further comprises a third accommodating slot in communication with the second accommodating slot, and the reduction box comprises a first shaft sleeve, the first shaft sleeve being arranged in the third accommodating slot, and the worm portion being arranged in the first shaft sleeve at an end away from the stator assembly.

[0011] In some embodiments, the stator assembly comprises a housing, a second shaft sleeve and a second wear-resistant sheet, the housing being fixed to the reduction box, the housing being provided with a second end seat, the second shaft sleeve and the second wear-resistant sheet being arranged in the second end seat, and the worm shaft comprising a light shaft portion connected with the worm portion, the light shaft portion being arranged in the second shaft sleeve at an end away from the worm portion and abutting against the second wear-resistant sheet.

[0012] In some embodiments, the stator assembly further comprises four magnetic tiles, the four magnetic tiles being arranged in the housing and surrounding the worm shaft.

[0013] In some embodiments, an end of the housing is inwardly recessed to form four support structures, the four support structures being arranged around the second end seat, and each of the magnetic tiles being supported by each of the support structures.

[0014] In some embodiments, the diameter of the housing is greater than 30 mm and less than 70 mm.

[0015] In some embodiments, the lead angle of the worm portion is greater than 0° and less than 5°.

[0016] In some embodiments, the reduction box comprises a gear assembly, a plurality of planetary gears, a ring gear and a gear carrier, the gear assembly and the planetary gears being arranged in the gear carrier, the gear assembly comprising a worm wheel and a sun gear arranged coaxially, the worm portion being engaged with the worm wheel, each of the planetary gears being engaged with the sun gear and the ring gear respectively, and the plurality of planetary gears being capable of driving the gear carrier to rotate when rotating around the sun gear.

[0017] In some embodiments, the reduction box further comprises a box body and an output shaft, the stator assembly being fixed to the box body, the gear assembly, the plurality of planetary gears, the ring gear and the gear carrier being arranged in the box body, the ring gear being embedded in the box body, and the output shaft being fixed to the gear carrier to rotate with the gear carrier.

[0018] In some embodiments, the speed reduction motor further comprises a first sealing ring, a second sealing ring and an oil blocking ring, the first sealing ring is abutted between the stator assembly and the box body, the oil blocking ring is sleeved on the output shaft and is installed on the box body, the box body comprises a first housing and a second housing connected, and the second sealing ring is abutted between the first housing and the second housing.

[0019] In some embodiments, the worm shaft is perpendicular to the output shaft, the distance between the central axis of the worm shaft and the end face of the free end of the output shaft is greater than 115mm and less than 160mm, and the distance between the central axis of the output shaft and the end face of the end of the stator assembly away from the reduction box is greater than 85mm and less than 130mm.

[0020] In some embodiments, the transmission ratio between the worm part and the worm wheel is greater than 40 and less than 100.

[0021] In some embodiments, the planetary gears are three, the sun gear is coaxially arranged with the ring gear, and the three planetary gears are uniformly distributed around the sun gear and located between the sun gear and the ring gear.

[0022] Another technical scheme adopted in the present application is to provide an electric pedal, which comprises the above speed reduction motor.

[0023] Still another technical scheme adopted in the present application is to provide a vehicle, which comprises the above speed reduction motor.

[0024] The present application has the beneficial effect that, different from the prior art, the speed reduction motor provided by the present application comprises a stator assembly, a rotor assembly, a reduction box and a buffer assembly, the part of the rotor assembly is arranged in the stator assembly and the rotor assembly can rotate relative to the stator assembly, the rotor assembly comprises a worm shaft, the rotor assembly outputs torque through the worm shaft, the worm shaft is in transmission connection with the reduction box, the worm part of the worm shaft is arranged in the reduction box, the reduction box is provided with a first end seat, and the end of the worm part away from the stator assembly is supported on the first end seat, and the buffer assembly is arranged in the first end seat and abuts against the worm part. In the technical scheme of the present application, the worm shaft abuts against the buffer assembly, so that the buffer assembly can absorb the kinetic energy when the worm shaft axially moves. In this way, the speed reduction motor can avoid abnormal sound when the pedal starts to expand and retract to the position, and ensure the comfort of the electric pedal. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0026] Figure 1 is a structural schematic diagram of a speed reduction motor provided by some embodiments of the present application;

[0027] Figure 2 is an exploded schematic diagram of a speed reduction motor provided by some embodiments of the present application;

[0028] Figure 3 is a structural schematic diagram of a first housing provided by some embodiments of the present application;

[0029] Figure 4 is a sectional view of the first housing of Figure 3 at A-A;

[0030] Figure 5 is a structural schematic diagram of a first wear-resistant sheet provided by some embodiments of the present application;

[0031] Figure 6 is a structural schematic diagram of an electric pedal provided by some embodiments of the present application;

[0032] Figure 7 is a structural schematic diagram of a vehicle provided by some embodiments of the present application.

[0033] Legend of reference signs: 100-speed reduction motor, 110-stator assembly, 111-outer shell, 1111-second end seat, 1112-supporting structure, 112-second shaft sleeve, 113-second wear-resistant sheet, 114-magnetic tile, 120-rotor assembly, 121-worm shaft, 1211-worm part, 1212-optical axis part, 130-reduction box, 131-box body, 1311-first end seat, 1311a-first accommodating groove, 1311b-second accommodating groove, 1311c-third accommodating groove, 1311d-first guiding structure, 1312-first housing, 1313-second housing, 132-first shaft sleeve, 133-gear assembly, 1331-worm wheel, 1332-sun gear, 134-planetary gear, 135-ring gear, 136-gear carrier, 137-output shaft, 140-buffering assembly, 141-first wear-resistant sheet, 1411-second guiding structure, 142-buffering pad, 150-first sealing ring, 160-second sealing ring, 170-oil retaining ring, 1000-electric pedal, 10000-vehicle. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be described clearly and completely in the following with reference to the drawings in the embodiments of the present application. It can be understood that the specific embodiments described herein are only used to explain the present application, and not to limit the present application. In addition, it should be noted that, for the convenience of description, only the parts related to the present application are shown in the drawings, and not all the structures. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0035] The terms "first", "second", "third" in the present application are only for descriptive purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second", "third" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units is not limited to the listed steps or units, but can optionally include steps or units not listed, or can optionally include other steps or units inherent to the process, method, product or device.

[0036] In this document, reference to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase "in an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. It is expressly understood that any of the embodiments described herein can be combined with any of the other embodiments.

[0037] The application provides a speed reduction motor, which comprises a stator assembly, a rotor assembly, a worm shaft, a reduction box and a buffer assembly.

[0038] Please refer to Figures 1-6 , Figure 1 is a structural schematic diagram of a speed reduction motor provided by some embodiments of the application, Figure 2 is an exploded schematic diagram of a speed reduction motor provided by some embodiments of the application, Figure 3 is a structural schematic diagram of a first shell provided by some embodiments of the application, Figure 4 is Figure 3 a sectional view of the first shell of Figure 5Figure 1 is a structural schematic diagram of a first wear-resistant sheet provided by some embodiments of the present application. The reduction gear motor 100 provided by the present application can include but is not limited to a stator assembly 110, a rotor assembly 120, a reduction gearbox 130, and a buffer assembly 140. Part of the structure of the rotor assembly 120 is arranged in the stator assembly 110 and the rotor assembly 120 can rotate relative to the stator assembly 110. The stator assembly 110 is used to provide a first magnetic field. The rotor assembly 120 can provide a second magnetic field after being energized. The second magnetic field interacts with the first magnetic field, so that the rotor assembly 120 is subjected to a force to rotate, thereby outputting a torque and converting electrical energy into mechanical energy. The rotor assembly 120 includes a worm shaft 121. The rotor assembly 120 outputs torque through the worm shaft 121. The reduction gearbox 130 is in transmission connection with the worm shaft 121 to achieve speed reduction and torque increase. The worm shaft 121 can include but is not limited to a light shaft portion 1212 and a worm portion 1211. The light shaft portion 1212 and the worm portion 1211 are connected. The light shaft portion 1212 is arranged in the stator assembly 110, and the worm portion 1211 is arranged in the reduction gearbox 130. The reduction gearbox 130 is provided with a first end seat 1311. The buffer assembly 140 is arranged on the first end seat 1311. The end of the worm portion 1211 away from the stator assembly 110 is supported on the first end seat 1311 and abuts against the buffer assembly 140, so as to avoid axial movement of the worm shaft 121 to cause abnormal noise and affect comfort under the buffering effect of the buffer assembly 140.

[0039] It can be understood that the worm shaft 121 in the reduction gear motor 100 will have an axial force during transmission. In particular, in the scenario where the reduction gear motor 100 is applied to the electric pedal 1000, since the load acting on the reduction gear motor 100 changes sharply when the electric pedal 1000 starts to deploy and retract to the position, the axial force acting on the worm shaft 121 changes greatly, thereby causing the reduction gear motor 100 to produce a large abnormal noise due to the axial movement of the worm shaft 121, which seriously affects the comfort of the electric pedal 1000. The end of the worm shaft 121 abuts against the buffer assembly 140, so as to utilize the energy-absorbing buffering effect of the buffer assembly 140, thereby avoiding abnormal noise caused by the movement of the worm shaft 121.

[0040] Optionally, the lead angle of the worm portion 1211 can be greater than 0° and less than 5°, so that the worm shaft 121 has a large self-locking capability. Specifically, the lead angle of the worm portion 1211 can be 0.5°, 1°, 1.5°, 2°, 2.5°, 3°, 3.5°, 4°, or 4.5°, etc. In this embodiment, the lead angle of the worm portion 1211 is 3°.

[0041] Further, the buffer assembly 140 can include, but is not limited to, the first wear-resistant sheet 141 and the buffer pad 142. The first end seat 1311 can include, but is not limited to, the first accommodating groove 1311a and the second accommodating groove 1311b. The first accommodating groove 1311a and the second accommodating groove 1311b are communicated. The buffer pad 142 is arranged in the first accommodating groove 1311a to deform and absorb energy when being extruded and automatically recover when the extrusion is removed. The first wear-resistant sheet 141 is arranged in the second accommodating groove 1311b to protect the buffer pad 142 and avoid direct contact between the worm shaft 121 and the buffer pad 142, which can easily cause the buffer pad 142 to fail. Specifically, the first wear-resistant sheet 141 abuts against the buffer pad 142, the worm portion 1211 abuts against the first wear-resistant sheet 141, and there is a buffer gap between the first wear-resistant sheet 141 and the groove bottom of the second accommodating groove 1311b.

[0042] Understandably, when the worm shaft 121 is extruded by the axial force to extrude the first wear-resistant sheet 141 and then the buffer pad 142, the buffer pad 142 will deform, thereby eliminating the buffer gap, so that the kinetic energy of the worm shaft 121 is converted into the internal energy of the buffer pad 142, thereby avoiding abnormal noise caused by the movement of the worm shaft 121. When the axial force acting on the worm shaft 121 disappears, the worm shaft 121 returns to the initial position under the action of the restoring force of the buffer pad 142, and the buffer gap is restored.

[0043] Further, the buffer gap can be greater than 0 mm and less than 1 mm. Specifically, the buffer gap can be 0.05 mm, 0.1 mm, 0.15 mm, 0.2 mm, 0.25 mm, 0.5 mm, 0.75 mm, 0.8 mm, 0.85 mm, 0.9 mm, or 0.95 mm, etc. In the embodiment, the buffer gap is 0.15 mm.

[0044] Optionally, the material of the first wear-resistant sheet 141 can be carbon fiber. Carbon fiber is light in weight, high in strength, and has excellent wear resistance.

[0045] Optionally, the material of the buffer pad 142 can be rubber. Rubber can produce large deformation under the action of small external force and quickly recover to the original state after the external force is removed, and has excellent buffering performance.

[0046] Further, the groove wall of the second accommodating groove 1311b is provided with a first guide structure 1311d. The first wear-resistant sheet 141 is provided with a second guide structure 1411. The first guide structure 1311d and the second guide structure 1411 are in sliding connection, so that the first wear-resistant sheet 141 can extrude the buffer pad 142 along the direction of the force of the worm shaft 121 when the first wear-resistant sheet 141 is extruded by the worm shaft 121, and the first wear-resistant sheet 141 will not rotate.

[0047] In the embodiment, the first guide structure 1311d is a protruding structure, and the second guide structure 1411 is a groove structure. In other embodiments, the first guide structure 1311d can be a groove structure, and the second guide structure 1411 can be a protruding structure.

[0048] Further, the first end seat 1311 further comprises a third accommodating groove 1311c in communication with the second accommodating groove 1311b. The reduction gearbox 130 comprises a first shaft sleeve 132. The first shaft sleeve 132 is arranged in the third accommodating groove 1311c, and the worm portion 1211 is arranged in the first shaft sleeve 132 at an end away from the stator assembly 110. The first shaft sleeve 132 plays a protective role in the process of rotation of the worm shaft 121. In other embodiments, the first shaft sleeve 132 can be replaced by a bearing.

[0049] Further, the stator assembly 110 can comprise but is not limited to a housing 111, a second shaft sleeve 112, and a second wear-resistant sheet 113. The housing 111 is fixed to the reduction gearbox 130. The housing 111 is provided with a second end seat 1111. The second shaft sleeve 112 and the second wear-resistant sheet 113 are arranged in the second end seat 1111. The optical axis portion 1212 is arranged in the second shaft sleeve 112 at an end away from the worm portion 1211 and abuts against the second wear-resistant sheet 113. Among them, the second shaft sleeve 112 plays a protective role in the process of rotation of the worm shaft 121. The second wear-resistant sheet 113 plays a protective role in the process of axial movement of the worm shaft 121.

[0050] Further, the stator assembly 110 further comprises at least two magnetic tiles 114. The at least two magnetic tiles 114 are arranged in the housing 111 and surround the worm shaft 121. In the embodiment, the stator assembly 110 comprises four magnetic tiles 114. The four magnetic tiles 114 are arranged in the housing 111 and surround the worm shaft 121. Among them, the arrangement of the four magnetic tiles 114 can make the torque output by the rotor assembly 120 larger than that of the arrangement of the two magnetic tiles 114. When the reduction motor 100 is applied to the electric pedal 1000, the arrangement of the four magnetic tiles 114 enables the reduction motor 100 to smoothly drive the pedal to expand.

[0051] Further, the end of the housing 111 is recessed inward to form at least two support structures 1112. The at least two support structures 1112 are arranged around the second end seat 1111. Each magnetic tile 114 is supported by each support structure 1112. In the embodiment, the end of the housing 111 is recessed inward to form four support structures 1112. The four support structures 1112 are arranged around the second end seat 1111. Each magnetic tile 114 is supported by each support structure 1112.

[0052] Further, the diameter of the housing 111 can be greater than 30 mm and less than 70 mm. Specifically, the diameter of the housing 111 can be 31 mm, 33 mm, 35 mm, 37 mm, 40 mm, 42.5 mm, 45 mm, 47.5 mm, 50 mm, 52.5 mm, 55 mm, 57.5 mm, 60 mm, 62.5 mm, 65 mm, 67.5 mm, 68 mm, or 69 mm, etc. In the present embodiment, the diameter of the housing 111 is 52.2 mm.

[0053] Further, the reduction gearbox 130 can include, but is not limited to, a gearbox body 131, a gear assembly 133, a plurality of planetary gears 134, a ring gear 135, a carrier 136, and an output shaft 137. The stator assembly 110 is fixed to the gearbox body 131, specifically, the housing 111 is fixed to the gearbox body 131. The gear assembly 133, the plurality of planetary gears 134, the ring gear 135, and the carrier 136 are disposed within the gearbox body 131. The ring gear 135 is embedded with the gearbox body 131. The gear assembly 133 and the planetary gears 134 are disposed in the carrier 136. The gear assembly 133 includes a worm wheel 1331 and a sun gear 1332 coaxially disposed. The worm portion 1211 is engaged with the worm wheel 1331. Each of the planetary gears 134 is engaged with the sun gear 1332 and the ring gear 135, respectively. The plurality of planetary gears 134 can drive the carrier 136 to rotate when the plurality of planetary gears 134 rotates around the sun gear 1332. The output shaft 137 is fixed to the carrier 136 to rotate with the carrier 136.

[0054] In the present embodiment, there are three planetary gears 134. The sun gear 1332 and the ring gear 135 are coaxially disposed. The three planetary gears 134 are evenly distributed around the sun gear 1332 and located between the sun gear 1332 and the ring gear 135.

[0055] Further, the worm shaft 121 is perpendicular to the output shaft 137. The distance between the central axis of the worm shaft 121 and the end face of the free end of the output shaft 137 is greater than 115 mm and less than 160 mm. Specifically, the distance between the central axis of the worm shaft 121 and the end face of the free end of the output shaft 137 can be 116 mm, 118 mm, 120 mm, 122 mm, 125 mm, 127 mm, 130 mm, 135 mm, 137 mm, 140 mm, 142 mm, 145 mm, 147 mm, 150 mm, 152 mm, 155 mm, 157 mm, 158 mm, or 159 mm, etc. In the present embodiment, the distance between the central axis of the worm shaft 121 and the end face of the free end of the output shaft 137 is 152.65 mm.

[0056] Further, the distance between the central axis of the output shaft 137 and the end face of the one end of the stator assembly 110 away from the reduction box 130 is greater than 85mm and less than 130mm. Specifically, the distance between the central axis of the output shaft 137 and the end face of the one end of the stator assembly 110 away from the reduction box 130 can be 86mm, 88mm, 90mm, 92mm, 95mm, 97mm, 100mm, 102mm, 105mm, 107mm, 110mm, 112mm, 115mm, 117mm, 120mm, 122mm, 125mm, 127mm, 128mm or 129mm, etc. In the embodiment, the distance between the central axis of the output shaft 137 and the end face of the one end of the stator assembly 110 away from the reduction box 130 is 113.5mm.

[0057] Further, the transmission ratio between the worm portion 1211 and the worm wheel 1331 can be greater than 40 and less than 100, to match the suitable lead angle of the worm portion 1211 and ensure the self-locking performance of the worm shaft 121. Specifically, the transmission ratio between the worm portion 1211 and the worm wheel 1331 can be 45, 47, 50, 52, 55, 57, 60, 62, 65, 67, 70, 72, 75, 77, 80, 82, 85, 87, 90, 92, 95, 97, 98 or 99, etc. In the embodiment, the transmission ratio between the worm portion 1211 and the worm wheel 1331 is 60.

[0058] Further, the reduction motor 100 further comprises a first sealing ring 150, a second sealing ring 160 and an oil baffle ring 170. The first sealing ring 150 abuts between the stator assembly 110 and the box 131. The oil baffle ring 170 is sleeved on the output shaft 137 and is installed on the box 131. The box 131 comprises a first housing 1312 and a second housing 1313 connected. The second sealing ring 160 abuts between the first housing 1312 and the second housing 1313. In this way, the reduction motor 100 can achieve IP69 level of water discharge level to adapt to the harsh working conditions of the electric pedal 1000.

[0059] The application provides a speed reduction motor 100 applied to an electric pedal 1000, the speed reduction motor 100 comprising: a stator assembly 110; a rotor assembly 120, part of the structure of the rotor assembly 120 is arranged in the stator assembly 110 and the rotor assembly 120 can rotate relative to the stator assembly 110, the rotor assembly 120 comprises a worm shaft 121, and the rotor assembly 120 outputs torque through the worm shaft 121; a speed reduction box 130, the speed reduction box 130 is in transmission connection with the worm shaft 121, a worm part 1211 of the worm shaft 121 is arranged in the speed reduction box 130, the speed reduction box 130 is provided with a first end seat 1311, and an end of the worm part 1211, which is away from the stator assembly 110, is supported on the first end seat 1311; and a buffer assembly 140 arranged on the first end seat 1311, and the worm part 1211 abuts against the buffer assembly 140. In the technical scheme of the application, the worm shaft 121 abuts against the buffer assembly 140, so that the buffer assembly 140 can absorb kinetic energy when the worm shaft 121 axially moves. In this way, the speed reduction motor 100 can avoid abnormal sound when the pedal starts to be unfolded and retracted to the position, and ensure the comfort of the electric pedal 1000.

[0060] Please refer to Figure 6 , Figure 6 is a structural schematic diagram of an electric pedal provided by some embodiments of the application. The electric pedal 1000 provided by the application can comprise but is not limited to the speed reduction motor 100.

[0061] Please refer to Figure 7 , Figure 7 is a structural schematic diagram of a vehicle provided by some embodiments of the application. The vehicle 10000 provided by the application can comprise but is not limited to the electric pedal 1000.

[0062] The above only describes some embodiments of the application, and does not limit the protection scope of the application, and any equivalent device or equivalent process transformation using the content of the specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the application.

Claims

1. A geared motor, used in an electric pedal, characterized in that, include: Stator assembly; A rotor assembly, wherein a portion of the rotor assembly is disposed within the stator assembly and the rotor assembly is rotatable relative to the stator assembly, the rotor assembly includes a worm shaft, and the rotor assembly outputs torque through the worm shaft; A reduction gearbox, wherein the reduction gearbox is connected to the worm shaft for transmission, the worm portion of the worm shaft is disposed in the reduction gearbox, the reduction gearbox is provided with a first end seat, and the end of the worm portion away from the stator assembly is supported on the first end seat; and A buffer assembly is disposed on the first end seat, and the worm gear portion abuts against the buffer assembly.

2. The geared motor according to claim 1, characterized in that, The buffer assembly includes a first wear-resistant plate and a buffer pad. The first end seat includes a first receiving groove and a second receiving groove, which are connected. The buffer pad is disposed in the first receiving groove, and the first wear-resistant plate is disposed in the second receiving groove. The first wear-resistant plate abuts against the buffer pad, and the worm gear portion abuts against the first wear-resistant plate. There is a buffer gap between the first wear-resistant plate and the bottom of the second receiving groove.

3. The geared motor according to claim 2, characterized in that, The buffer gap is greater than 0 mm and less than 1 mm.

4. The geared motor according to claim 2, characterized in that, The first wear-resistant sheet is made of carbon fiber, and the buffer pad is made of rubber.

5. The geared motor according to claim 2, characterized in that, The second receiving groove has a first guide structure on its groove wall, and the first wear-resistant sheet has a second guide structure. The first guide structure and the second guide structure are slidably connected.

6. The geared motor according to claim 5, characterized in that, The first guide structure is a raised structure, and the second guide structure is a groove structure.

7. The geared motor according to claim 2, characterized in that, The first end seat also includes a third receiving groove communicating with the second receiving groove. The gearbox includes a first bushing, which is disposed in the third receiving groove. The end of the worm gear portion away from the stator assembly passes through the first bushing.

8. The geared motor according to claim 1, characterized in that, The stator assembly includes a housing, a second bushing, and a second wear-resistant plate. The housing is fixed to the gearbox. The housing is provided with a second end seat. The second bushing and the second wear-resistant plate are disposed on the second end seat. The worm shaft includes an optical shaft portion connected to the worm portion. One end of the optical shaft portion away from the worm portion passes through the second bushing and abuts against the second wear-resistant plate.

9. The geared motor according to claim 8, characterized in that, The stator assembly also includes four magnetic tiles, which are disposed within the housing and arranged around the worm shaft.

10. The geared motor according to claim 9, characterized in that, The end of the outer shell is recessed inward to form four support structures, which are arranged around the second end seat, with each magnetic tile supported on each support structure.

11. The geared motor according to claim 8, characterized in that, The diameter of the outer shell is greater than 30 mm and less than 70 mm.

12. The geared motor according to claim 1, characterized in that, The lead angle of the worm gear section is greater than 0° and less than 5°.

13. The geared motor according to claim 1, characterized in that, The gearbox includes a gear assembly, several planetary gears, a ring gear, and a gear carrier. The gear assembly and the planetary gears are mounted on the gear carrier. The gear assembly includes a worm gear and a sun gear arranged coaxially. The worm part meshes with the worm gear. Each planetary gear meshes with the sun gear and the ring gear, respectively. When the several planetary gears rotate around the sun gear, they can drive the gear carrier to rotate.

14. The geared motor according to claim 13, characterized in that, The gearbox also includes a housing and an output shaft. The stator assembly is fixed to the housing. The gear assembly, a plurality of planetary gears, the gear ring, and the gear carrier are disposed in the housing. The gear ring is fitted into the housing. The output shaft is fixed to the gear carrier so as to rotate with the gear carrier.

15. The geared motor according to claim 14, characterized in that, The geared motor further includes a first sealing ring, a second sealing ring, and an oil baffle ring. The first sealing ring abuts between the stator assembly and the housing. The oil baffle ring is sleeved on the output shaft and installed in the housing. The housing includes a first housing and a second housing connected together. The second sealing ring abuts between the first housing and the second housing.

16. The geared motor according to claim 14, characterized in that, The worm shaft is perpendicular to the output shaft. The distance between the central axis of the worm shaft and the end face of the free end of the output shaft is greater than 115mm and less than 160mm. The distance between the central axis of the output shaft and the end face of the stator assembly away from the gearbox is greater than 85mm and less than 130mm.

17. The geared motor according to claim 13, characterized in that, The transmission ratio between the worm gear and the worm wheel is greater than 40 and less than 100.

18. The geared motor according to claim 13, characterized in that, The planetary gears are three in number. The sun gear is coaxial with the ring gear. The three planetary gears are evenly distributed around the sun gear and located between the sun gear and the ring gear.

19. An electric pedal, characterized in that, Including the geared motor as described in any one of claims 1-18.

20. A vehicle, characterized in that, Including the electric pedal as described in claim 19.

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