Electric pedal motor assembly and vehicle

Abstract

The invention relates to the technical field of motors, and discloses an electric pedal motor assembly and a vehicle, and the electric pedal motor assembly comprises a motor and a speed reducer which are detachably connected. The speed reducer adopts worm and gear and planetary gear hybrid transmission, the planetary gear is used for high-speed section speed reduction, the worm and gear special terminal self-locking is achieved, and the oil circulation efficiency is improved through a hollowed-out worm gear rib plate. An oil film assembly is innovatively integrated, an oil coating plate is attached to the spiral face of a worm under driving of an inclined spring, lubricating oil is dynamically adsorbed and evenly coated through an oil collecting brush, and a protective oil film is formed immediately after rotation stopping and restarting; when the worm gear rotates, the rib plates drive oil to flow through the shaking type W-shaped middle plate, the oil hang time is prolonged to balance oil quality, and meanwhile the oil filtering bin and the magnetic lining piece form a stepped impurity filtering system to adsorb metal chippings. By means of the design, the problems of high-temperature abrasion, oil film failure and impurity accumulation in a traditional scheme are solved, and collaborative optimization of efficiency improvement, cooling treatment and oil service life prolonging is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, in particular to an electric pedal motor assembly and a vehicle. Background Art

[0002] Electric step systems are automatic retractable assist devices designed for high-riding vehicles. Driven by a motor, they intelligently retract and extend the step, improving accessibility. Traditional solutions employ a worm gear reducer for self-locking, but these solutions present significant drawbacks. Worm gear transmissions are dominated by sliding friction, which increases frictional temperatures during high-load operation, accelerating lubricant oxidation and failure. When restarting after prolonged parking, the worm gear teeth experience dry friction due to oil film loss, leading to adhesive wear. Furthermore, the lubrication system lacks dynamic control capabilities, resulting in uneven heat dissipation due to oil sedimentation and further damage to the tooth surfaces due to the accumulation of metal debris.

[0003] While existing improvements, such as forced oil cooling or composite gears, have partially alleviated efficiency issues, they haven't resolved the fundamental conflict between oil film maintenance and impurity removal, increasing maintenance costs. Therefore, an integrated solution that balances efficient transmission, long-term lubrication, and self-cleaning capabilities is urgently needed.

[0004] In view of this, the present invention proposes an electric pedal motor assembly and a vehicle to solve the above-mentioned technical problems. Summary of the Invention

[0005] In order to address the deficiencies of the prior art, the present invention provides an electric pedal motor assembly and a vehicle; thereby resolving the problem that existing improved technologies such as forced oil cooling or compound gears partially alleviate the problem of motor transmission efficiency but fail to resolve the fundamental contradiction between oil film maintenance and impurity removal, thereby increasing maintenance costs.

[0006] The technical solution adopted by the present invention to solve the technical problem is an electric pedal motor assembly, comprising a motor and a reducer, wherein the reducer is detachably connected to the motor, and an oil film component is movably installed in the reducer; The motor includes a bottom shell, a magnet, a copper busbar, a battery core and an output shaft. The bottom shell is used as the external protective frame of the motor. The magnet is used to provide a magnetic field. Several battery cores are fixedly mounted on the copper busbar in a stacked manner. The output shaft is fixedly connected to the copper busbar. The exposed end of the output shaft is fixedly connected to a worm, and the end of the worm passes through the reducer.

[0007] The reducer includes a housing, a worm gear, a sun gear, an inner ring gear, planetary gears and a driven shaft. The worm gear is meshed with the worm for transmission. The sun gear is fixedly mounted on one side of the worm gear in a coaxial manner. The inner ring gear is rotatably mounted on the inner side of the housing. The planetary gears are located on the inner side of the inner ring gear, and multiple planetary gears are simultaneously meshed with the inner ring gear and the sun gear in a circular array. The driven shaft is rotatably mounted on the end cover inside the housing, and the end cover is fixedly connected to the inner ring gear.

[0008] The middle part of the worm wheel body is a hollow structure, and ribs are evenly installed in the hollow ring groove in a radial pattern; The oil film assembly includes an oil covering plate and an oil covering spring. An oil film groove is opened at the top of the installation position of the shell, an oil seal is fixedly installed at the oil film groove position, and an oil covering plate is fixedly installed on the side of the oil surface facing the inside of the shell through a plurality of oil covering springs, and the oil covering plate is in elastic contact with the worm.

[0009] The oil covering plate is an arc-shaped curved surface structure, the oil covering plate is located above the worm, and the oil collecting brushes are evenly arranged on the side of the oil covering plate facing the worm; The oil covering springs are all installed at an angle, and the angle between them and the axis of the oil covering plate is variable and maintained in the range of 60 to 90 degrees; A center plate is movably mounted on a side of the housing opposite to the sun gear, the center plate is attached to the side wall of the worm gear, and both ends of the center plate are elastically connected to the housing via a set of center springs; The center plate is a "W"-shaped structure, with an arc section in the middle of the center plate that rotates in contact with the central axis of the worm gear. Rolling grooves are evenly opened at the position of the arc section, and rollers are circumferentially installed at the position of the central axis of the worm gear, and the rollers are in contact with the rolling grooves when running; The middle plate is provided with oil filter bins on both sides of the arc section; A slot is provided in the housing, the slot is arranged around the worm gear, an inner lining is movably installed in the slot, the inner lining is located in the middle and lower part of the worm gear, and the inner lining is exposed in the inner cavity of the housing; The oil filter bin and the inner lining are both dense mesh structures; A permanent magnetic sheet that is magnetically attracted to the inner lining sheet is fixedly mounted on the outer wall of the shell.

[0010] The beneficial effects of the present invention are as follows: the high-efficiency deceleration of planetary gears and the self-locking decoupling design of the worm terminal are utilized to improve the overall efficiency and anti-slip force of the system; the oil covering plate driven by the tilt spring is combined with the oil collecting brush to absorb redundant grease when the worm stops, and a uniform oil film is formed at the moment of restart, which cures the bonding failure caused by dry friction; the hollow worm gear ribs are used to improve the oil flow rate; the shaking center plate is combined to extend the heat dissipation path; the magnetic oil filter bin is assisted by the ladder to absorb metal debris, thereby achieving cooling while improving the oil life. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The present invention will be further described below with reference to the accompanying drawings and examples.

[0012] Figure 1 Schematic diagram of the overall connection structure of the present invention; Figure 2 Schematic diagram of the overall structure of the reducer in the present invention; Figure 3This is an exploded schematic diagram of some parts of the motor and reducer in the present invention; Figure 4 It is a partial cross-sectional schematic diagram of the reducer in the present invention; Figure 5 for Figure 4 A is an enlarged schematic diagram; Figure 6 Schematic diagram of the installation position of the inner lining sheet in the present invention; Figure 7 for Figure 6 A magnified schematic diagram of point B in FIG. Figure 8 for Figure 6 The enlarged schematic diagram of point C in FIG. In the picture: 1. Motor; 2. Reducer; 3. Oil film assembly; 11. Bottom shell; 12. Magnet; 13. Copper busbar; 14. Battery cell; 15. Output shaft; 16. Worm; 21. Housing; 22. Worm gear; 23. Sun gear; 24. Ring gear; 25. Planetary gear; 26. Driven shaft; 211. Oil seal; 31. Oil covering plate; 32. Oil covering spring; 311. Oil collecting brush; 221. Rib; 212. Center plate; 213. Center spring; 222. Roller; 214. Oil filter bin; 215. Lining; 216. Permanent magnet. DETAILED DESCRIPTION

[0013] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0014] The embodiments of the present invention provide an electric pedal motor assembly and a vehicle, thereby solving the problem that existing improvement technologies such as forced oil cooling or compound gears partially alleviate the problem of motor transmission efficiency but do not solve the fundamental contradiction between oil film maintenance and impurity removal, thereby increasing maintenance costs.

[0015] like Figures 1 to 4 ,as well as Figure 7 As shown, a preferred embodiment of the present invention provides an electric pedal motor assembly, including a motor 1 and a reducer 2. The reducer 2 is detachably connected to the motor 1, and an oil film component 3 is movably installed in the reducer 2.

[0016] The motor 1 includes a bottom shell 11, a magnet 12, a copper busbar 13, a battery core 14 and an output shaft 15. The bottom shell 11 is used as the external protective frame of the motor 1. The magnet 12 is used to provide a magnetic field. Several battery cores 14 are fixedly mounted on the copper busbar 13 in a stacked manner. The output shaft 15 is fixedly connected to the copper busbar 13. The exposed end of the output shaft 15 is fixedly connected to a worm 16, and the end of the worm 16 passes through the reducer 2.

[0017] The reducer 2 includes a housing 21, a worm gear 22, a sun gear 23, an inner ring gear 24, planetary gears 25 and a driven shaft 26. The worm gear 22 is meshed with the worm 16 for transmission. The sun gear 23 is fixedly mounted on one side of the worm gear 22 in a coaxial manner. The inner ring gear 24 is rotatably mounted on the inner side of the housing 21. The planetary gears 25 are located on the inner side of the inner ring gear 24, and multiple planetary gears 25 are simultaneously meshed with the inner ring gear 24 and the sun gear 23 in a circular array. The driven shaft 26 is rotatably mounted on the end cover inside the housing 21, and the end cover is fixedly connected to the inner ring gear 24.

[0018] During operation, the output power is provided by the operation of the motor 1, and the speed and torque of the motor 1 are transferred through the reducer 2. A dual reduction design of the worm wheel 22, worm 16 and planetary gears is adopted. The self-locking function is achieved by the power transmission between the worm wheel 22 and the worm 16, and the planetary gears are used to undertake the high-speed section reduction function, achieving both high efficiency and self-locking effects. The planetary gears ensure motion accuracy, the wear of the worm wheel 22 and worm 16 can be adjusted and compensated, and the dual transmission chains are redundant to each other, thereby improving service life.

[0019] Further, such as Figure 6 and Figure 7 As shown, the oil film assembly 3 includes an oil covering plate 31 and an oil covering spring 32. An oil film groove is opened at the top of the installation position of the housing 21, and an oil seal 211 is fixedly installed at the oil film groove position. The oil covering plate 31 is fixedly installed on the side of the oil seal 211 facing the inside of the housing 21 through a plurality of oil covering springs 32, and the oil covering plate 31 is in elastic contact with the worm 16. The oil covering plate 31 is an arc-shaped curved surface structure. The oil covering plate 31 is located above the worm 16, and oil collecting brushes 311 are evenly arranged on the side of the oil covering plate 31 facing the worm 16.

[0020] During actual operation, an appropriate volume of lubricating oil is filled into the reducer 2 to meet the lubrication and wear protection of its internal meshing components. The lower part of the worm wheel 22 is immersed in the lubricating oil. While rotating, it uses its own adhesion to transfer and carry the lubricating oil. In this process, the oil covering plate 31 and the oil collecting brush 311 are attached to the spiral position of the worm 16 under the elastic push of the oil covering spring 32. The oil collecting brush 311 is used to absorb the excess grease adhering to the worm 16 and evenly apply it. The oil collecting brush 311 can achieve long-term retention of lubricating oil by its own structure. When resuming work after a long shutdown period, it can provide oil film protection for the surface of the worm 16 in time, forming a long-term protective layer to reduce wear.

[0021] Further, such as Figure 7 As shown, the oil covering springs 32 are all installed at an angle, and the angle between them and the axis of the oil covering plate 31 is variable and maintained in the range of 60 to 90 degrees; The inclined oil covering spring 32 can provide elastic output while using its own angular deflection to adapt to the adjustment of the position of the oil covering plate 31. When the worm 16 rotates, within the elastic limit, the oil collecting brush 311 is displaced by the spiral push of the worm 16, and the distance between it and the worm 16 gradually decreases, and the contact area and contact force gradually increase until the spiral tooth groove of the worm 16 is filled. While achieving lubricating oil coating, the bottom of the tooth groove of the worm 16 is cleaned and the uniformity of oil film coverage is improved. When the worm 16 stops rotating or rotates in the opposite direction, the oil collecting brush 311 returns to its original position under the elastic reset action of the oil covering spring 32, and this reciprocating process is used to achieve multiple functions such as oil absorption, oiling and cleaning.

[0022] Further, such as Figure 4 and Figure 5 As shown, the middle part of the worm wheel 22 is a hollow structure, and ribs 221 are evenly installed in a radial pattern in the hollow ring groove.

[0023] The ribs 221 can enhance the lifting effect of the worm wheel 22 on the lubricating oil during rotation, so that the lubricating oil is in a flowing state, preventing precipitation, and achieving a heat dissipation function.

[0024] Further, such as Figure 4 and Figure 5 As shown, a center plate 212 is movably installed on the side of the housing 21 opposite to the sun gear 23. The center plate 212 is fitted to the side wall of the worm gear 22, and both ends of the center plate 212 are elastically connected to the housing 21 through a group of center springs 213. A slope is provided on the side of the rib 221 close to the center plate 212. The center plate 212 is a "W"-shaped structure. An arc segment that rotates in contact with the central axis of the worm gear 22 is provided in the middle of the center plate 212. Rolling grooves are evenly opened at the position of the arc segment. Rollers 222 are circumferentially installed at the central axis of the worm gear 22, and the rollers 222 are in contact with the rolling grooves during operation.

[0025] After the lubricating oil is lifted up by the ribs 221, when it passes the position of the middle plate 212, under the action of gravity and the inclined guiding action of the slope of the surface of the ribs 221, the excess lubricating oil flows into the guide middle plate 212 and falls back to the bottom of the shell 21 under the guidance of the middle plate 212. The retention effect of the middle plate 212 can increase the air time of the extracted lubricating oil, thereby realizing the extraction amount of the lubricating oil deposited at the bottom by the ribs 221, achieving a circulation effect, and improving the density and uniformity of the lubricating oil. As the worm gear 22 rotates, it drives the roller 222 to rotate circumferentially. By utilizing the brief contact between the roller 222 and the rolling groove during the rotation process, combined with the elastic pulling action of the middle spring 213, the middle plate 212 is kept in a shaking state, thereby reducing the adhesion and residue of the lubricating oil.

[0026] Further, such as Figure 4 and Figure 5 As shown, the center plate 212 is provided with oil filter bins 214 on both sides of the arc section.

[0027] The oil filter bin 214 can receive and filter the lubricating oil after lifting, receive and isolate impurities in the lubricating oil or metal debris generated by mechanical wear, and further improve the quality of the lubricating oil.

[0028] Further, such as Figure 6 and Figure 8 As shown, a slot is provided in the outer shell 21, and the slot is arranged around the worm gear 22. An inner lining 215 is movably installed in the slot. The inner lining 215 is inserted into the sealing groove with a sealing plate at the bottom of the outer shell 21 to the lower middle position of the worm gear 22, and the inner lining 215 is exposed in the inner cavity of the outer shell 21. The oil filter bin 214 and the inner lining 215 are both dense mesh structures.

[0029] The inner lining 215 is located in the inner cavity of the outer shell 21. The lubricating oil flows through the surface of the inner lining 215 during the flow process. At this time, the metal debris in the lubricating oil settles in the inner lining 215 and the oil filter bin 214 during the flow, achieving the dual effect of impurity isolation of the solid-liquid separator.

[0030] Further, such as Figure 6 and Figure 8 As shown, a permanent magnet 216 is fixedly mounted on the outer wall of the housing 21 and is magnetically attracted to the inner lining 215 .

[0031] The magnetic effect of the permanent magnet 216 can be used to further enhance the adsorption effect of metal debris in the lubricating oil.

[0032] A vehicle has a deceleration pedal driven by a motor assembly consisting of a motor 1, a reducer 2 and an oil film component 3.

[0033] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above-described embodiments. The above-described embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electric pedal motor assembly, comprising a motor (1) and a reducer (2), characterized in that: The reducer (2) is detachably connected to the motor (1), and an oil film component (3) is movably installed in the reducer (2); The motor (1) comprises a bottom shell (11), a magnet (12), a copper busbar (13), a battery core (14), an output shaft (15) and a worm (16); the exposed end of the output shaft (15) is fixedly connected to the worm (16), and the end extends into the reducer (2); The reducer (2) includes housing (21); A worm wheel (22) meshing with the worm (16) for transmission; The sun gear (23) is fixedly mounted on one side of the worm gear (22) in a coaxial manner; An inner gear ring (24) is rotatably mounted on the inner side of the housing (21); Planetary gears (25) are located inside the inner gear ring (24), and a plurality of planetary gears (25) are simultaneously meshed with the inner gear ring (24) and the sun gear (23) in a circumferential array; A driven shaft (26) is rotatably mounted on an end cover in the housing (21), and the end cover is fixedly connected to the inner gear ring (24); The oil film assembly (3) includes an oil covering plate (31) and an oil covering spring (32). An oil film groove is provided at the top of the installation position of the housing (21). An oil seal (211) is fixedly installed at the oil film groove position. The oil covering plate (31) is fixedly installed on the side of the oil seal (211) facing the inside of the housing (21) through a plurality of oil covering springs (32). The oil covering plate (31) is in elastic contact with the worm (16). The oil covering plate (31) is an arc-shaped curved surface structure. The oil covering plate (31) is located above the worm (16), and an oil collecting brush (311) is evenly provided on the side of the oil covering plate (31) facing the worm (16).

2. The electric scooter motor assembly according to claim 1, characterized in that: The oil covering springs (32) are all installed at an angle, and the angle between them and the axis of the oil covering plate (31) is variable and maintained in the range of 60 to 90 degrees.

3. The electric scooter motor assembly according to claim 1, characterized in that: The middle portion of the worm wheel (22) is a hollow structure, and ribs (221) are evenly installed in a radial pattern in the hollow ring groove.

4. The electric pedal motor assembly according to claim 3, characterized in that: A center plate (212) is movably mounted on a side of the housing (21) opposite to the sun gear (23). The center plate (212) is attached to the side wall of the worm gear (22), and both ends of the center plate (212) are elastically connected to the housing (21) via a group of center springs (213). A slope is provided on a side of the rib plate (221) close to the center plate (212).

5. The electric pedal motor assembly according to claim 4, characterized in that: The center plate (212) is a "W"-shaped structure. An arc segment is provided in the middle of the center plate (212) for rotationally fitting with the central axis of the worm gear (22). Rolling grooves are evenly provided at the position of the arc segment. Rollers (222) are circumferentially installed at the position of the central axis of the worm gear (22), and the rollers (222) are in contact with the rolling grooves during operation.

6. The electric pedal motor assembly according to claim 5, characterized in that: The middle plate (212) is provided with oil filter bins (214) on both sides of the arc section.

7. The electric pedal motor assembly according to claim 6, characterized in that: A slot is provided in the housing (21), the slot being arranged around the worm gear (22), and an inner lining (215) being movably installed in the slot. The inner lining (215) is inserted into a sealing notch with a sealing plate at the bottom of the housing (21) to a position in the middle and lower part of the worm gear (22), and the inner lining (215) is exposed in the inner cavity of the housing (21).

8. The electric pedal motor assembly according to claim 7, characterized in that: The oil filter bin (214) and the inner lining sheet (215) both have a dense mesh structure.

9. The electric pedal motor assembly according to claim 8, characterized in that: A permanent magnetic sheet (216) that is magnetically attracted to the inner lining sheet (215) is fixedly mounted on the outer wall of the housing (21).

10. A vehicle, characterized in that: The vehicle deceleration pedal drive adopts the motor assembly as described in claims 1-9.

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