An electric pedal motor assembly and vehicle

Abstract

The application relates to the technical field of electric machines, and discloses an electric pedal motor assembly and a vehicle, which comprise a detachably connected motor and a speed reducer. The speed reducer adopts mixed transmission of a worm and gear and a planetary gear: the planetary gear undertakes high-speed stage deceleration, the worm and gear is responsible for terminal self-locking, and the hollow worm rib plate is used to improve oil circulation efficiency. An innovative integrated oil film assembly is provided, an oil covering plate of the oil film assembly is driven by an inclined spring to adhere to a worm spiral surface, dynamic adsorption and uniform lubricating oil coating are realized by using an oil collecting brush, and a protective oil film is formed in time when restarting after stopping; when the worm wheel rotates, the rib plate drives oil to flow through a shaking type W-shaped middle plate, the oil emptying time is prolonged to balance the oil quality, a filter oil bin and a magnetic inner lining piece constitute a stepped impurity filtering system, and metal scraps are adsorbed. The design solves the problems of high-temperature wear, oil film failure and impurity accumulation in the traditional scheme, and realizes the synergistic optimization of efficiency improvement, cooling treatment and oil quality life extension.

Description

Technical Field

[0001] This invention relates to the field of motor technology, specifically to an electric pedal motor assembly and vehicle. Background Technology

[0002] Electric car pedals are automatic retractable auxiliary devices designed for high-chassis vehicles. Driven by a motor, they intelligently extend and retract, improving ease of entry and exit. Traditional solutions use worm gear reducers for self-locking, but this has significant drawbacks: worm gear drives rely heavily on sliding friction, leading to increased friction temperature under high loads and accelerated lubricant oxidation; upon restarting after long periods of inactivity, oil film loss causes dry friction on the worm gear teeth, resulting in scuffing; simultaneously, the lubrication system lacks dynamic control, oil sedimentation leads to uneven heat dissipation, and the accumulation of metal debris further exacerbates tooth surface damage.

[0003] Existing improvement technologies, such as forced oil cooling or composite gears, have partially alleviated the efficiency problem, but they have not resolved the fundamental contradiction between oil film maintenance and impurity removal, thus increasing maintenance costs. Therefore, there is an urgent need for an integrated solution that balances high-efficiency transmission, long-term lubrication, and self-cleaning capabilities.

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

[0005] To address the shortcomings of existing technologies, this invention provides an electric pedal motor assembly and vehicle; thereby resolving the problem that while existing improved technologies such as forced oil cooling or composite gears partially alleviate the problem of motor transmission efficiency, they fail to resolve the fundamental contradiction between oil film maintenance and impurity removal, thus increasing maintenance costs.

[0006] The technical solution adopted by the present invention to solve its technical problem is an electric pedal motor assembly, including a motor and a reducer, wherein the reducer is detachably connected to the motor, and an oil film assembly is movably installed inside the reducer;

[0007] The motor includes a base shell, a magnet, a copper busbar, battery cells, and an output shaft. The base shell serves as an external protective frame for the motor. The magnet provides a magnetic field. Several battery cells are fixedly mounted on the copper busbar in a stacked manner. The output shaft is fixedly connected to the copper busbar. A worm gear is fixedly connected to the exposed end of the output shaft, and the end of the worm gear extends into the reducer.

[0008] The reducer includes a housing, a worm gear, a sun gear, an internal gear ring, planet gears, and a driven shaft. The worm gear meshes with a worm for transmission. The sun gear is fixedly mounted on one side of the worm gear in a coaxial manner. The internal gear ring is rotatably mounted on the inside of the housing. The planet gears are located inside the internal gear ring, and multiple planet gears mesh with the internal gear ring and the sun gear simultaneously in a circular array. The driven shaft is rotatably mounted on an end cover inside the housing, and the end cover is fixedly connected to the internal gear ring.

[0009] The worm gear body has a hollow structure in the middle, and ribs are evenly installed radially in the hollow annular groove.

[0010] The oil film assembly includes an oil-covering plate and an oil-covering spring. An oil film groove is provided at the top of the mounting position of the housing. An oil seal is fixedly installed at the position of the oil film groove. An oil-covering plate is fixedly installed on the side of the oil film facing inward of the housing through several oil-covering springs, and the oil-covering plate is in elastic contact with the worm gear.

[0011] The oil-coating plate has an arc-shaped curved surface structure. The oil-coating plate is located above the worm gear, and oil collection brushes are evenly arranged on the side of the oil-coating plate facing the worm gear.

[0012] All the oil-coated springs are installed at an angle, and the angle between them and the axis of the oil-coated plate is variable, maintained in the range of 60 to 90 degrees.

[0013] A central plate is movably installed on the side of the outer casing opposite to the sun gear. The central plate is attached to the side wall of the worm gear, and both ends of the central plate are elastically connected to the outer casing through a set of central springs.

[0014] The central plate has a "W" shaped structure. The central plate has an arc-shaped section that rotates and fits with the central shaft of the worm gear. The arc-shaped section is evenly provided with grooves. Rollers are installed circumferentially at the central shaft of the worm gear, and the rollers contact the grooves when they rotate.

[0015] The central plate is equipped with oil filter chambers on both sides of the arc-shaped section;

[0016] The housing has a slot that surrounds the worm gear. An inner liner is movably installed in the slot. The inner liner is located in the lower middle part of the worm gear and is exposed in the inner cavity of the housing.

[0017] The oil filter compartment and the inner lining sheet are both dense mesh structures;

[0018] A permanent magnet sheet that is magnetically attracted to the inner lining sheet is fixedly installed on the outer wall of the outer shell.

[0019] The beneficial effects of this invention are as follows: By utilizing the efficient reduction of planetary gears and the self-locking decoupling design of the worm gear end, the overall efficiency of the system and the resistance to backflow are improved. The oil-covering plate driven by the inclined spring, together with the oil collection brush, adsorbs excess grease when the worm gear stops rotating and forms a uniform oil film at the moment of restart, thus eliminating the adhesion failure caused by dry friction. The hollow worm gear rib plate is used to improve the oil flow rate. Combined with the shaking central plate to extend the heat dissipation path, and the magnetic oil filter chamber adsorbs metal debris in stages, the system can achieve cooling while improving the oil life. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 This is a schematic diagram of the overall connection structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the overall structure of the speed reducer in this invention;

[0023] Figure 3 This is an exploded view of some parts of the motor and reducer in this invention;

[0024] Figure 4 This is a partial cross-sectional schematic diagram of the speed reducer in this invention;

[0025] Figure 5 for Figure 4 Enlarged diagram of point A in the diagram;

[0026] Figure 6 This is a schematic diagram showing the installation position of the inner liner in this invention;

[0027] Figure 7 for Figure 6 Enlarged diagram of point B in the diagram;

[0028] Figure 8 for Figure 6 Enlarged diagram of point C in the diagram;

[0029] In the picture:

[0030] 1. Motor; 2. Reducer; 3. Oil film assembly; 11. Bottom shell; 12. Magnet; 13. Copper busbar; 14. Battery cell; 15. Output shaft; 16. Worm gear; 21. Housing; 22. Worm wheel; 23. Sun gear; 24. Internal gear ring; 25. Planetary gears; 26. Driven shaft; 211. Oil seal; 31. Oil-covered plate; 32. Oil-covered spring; 311. Oil collecting brush; 221. Rib plate; 212. Central plate; 213. Central spring; 222. Roller; 214. Oil filter chamber; 215. Inner liner; 216. Permanent magnet. Detailed Implementation

[0031] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0032] This invention provides an electric pedal motor assembly and vehicle, which solves the problem that while existing improved technologies such as forced oil cooling or composite gears partially alleviate the problem of motor transmission efficiency, they do not solve the fundamental contradiction between oil film maintenance and impurity removal, thus increasing maintenance costs.

[0033] 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 assembly 3 is movably installed inside the reducer 2.

[0034] The motor 1 includes a base shell 11, a magnet 12, a copper busbar 13, a battery cell 14, and an output shaft 15. The base shell 11 serves as an external protective frame for the motor 1. The magnet 12 is used to provide a magnetic field. Several battery cells 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. A worm gear 16 is fixedly connected to the exposed end of the output shaft 15, and the end of the worm gear 16 extends into the reducer 2.

[0035] The reducer 2 includes a housing 21, a worm gear 22, a sun gear 23, an internal gear ring 24, planet gears 25, and a driven shaft 26. The worm gear 22 meshes with the worm 16 for transmission. The sun gear 23 is coaxially fixedly installed on one side of the worm gear 22. The internal gear ring 24 is rotatably installed on the inside of the housing 21. The planet gears 25 are located inside the internal gear ring 24, and multiple planet gears 25 mesh with the internal gear ring 24 and the sun gear 23 simultaneously in a circumferential array. The driven shaft 26 is rotatably installed on an end cover inside the housing 21, and the end cover is fixedly connected to the internal gear ring 24.

[0036] During operation, the motor 1 provides the output power, and the speed and torque of the motor 1 are transmitted and transitioned through the reducer 2. It adopts a dual reduction design of worm gear 22, worm 16 and planetary gear. The power transmission between worm gear 22 and worm 16 realizes the self-locking function, and the planetary gear undertakes the high-speed reduction function, so as to achieve both high efficiency and self-locking effect. The planetary gear ensures the motion accuracy, and the wear of worm gear 22 and worm 16 can be adjusted and compensated. The dual transmission chains are redundant to each other and improve service life.

[0037] Furthermore, such as Figure 6 and Figure 7As shown, 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 position of the oil film groove. An oil-covering plate 31 is fixedly installed on the side of the oil seal 211 facing the inside of the housing 21 by a number of oil-covering springs 32. The oil-covering plate 31 is in elastic contact with the worm gear 16. The oil-covering plate 31 has an arc-shaped curved surface structure. The oil-covering plate 31 is located above the worm gear 16, and oil collecting brushes 311 are evenly arranged on the side of the oil-covering plate 31 facing the worm gear 16.

[0038] In actual operation, an appropriate volume of lubricating oil is filled into the reducer 2 to meet the lubrication and anti-wear requirements of its internal meshing components. The lower part of the worm gear 22 is immersed in the lubricating oil. While rotating, it uses its own adhesion to transfer and carry the lubricating oil. During this process, the oil-covering plate 31 and the oil-collecting brush 311 are attached to the helical position of the worm 16 under the elastic pushing action of the oil-covering spring 32. The oil-collecting brush 311 absorbs the excess grease adhering to the worm 16 and achieves uniform coating. The oil-collecting brush 311 can achieve long-term retention of lubricating oil through its own structure. When restarting after a long period of shutdown, it can provide oil film protection to the surface of the worm 16 in a timely manner, forming a long-lasting protective layer and reducing wear.

[0039] Furthermore, such as Figure 7 As shown, all the oil-covered springs 32 are installed at an angle, and the angle between them and the axis of the oil-covered plate 31 is variable and maintained in the range of 60 to 90 degrees.

[0040] The inclined oil-coating spring 32 provides elastic force output and can adapt to the adjustment of the position of the oil-coating plate 31 by deflecting its own angle. When the worm 16 rotates, within the elastic limit, the oil collecting brush 311 is displaced by the helical push of the worm 16, and the distance between it and the worm 16 gradually decreases, the contact area and contact force gradually increase until the helical groove of the worm 16 is filled. While achieving lubricating oil coating, it also cleans the bottom of the groove of the worm 16 and improves the uniformity of oil film coverage. 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-coating spring 32. This process is repeated to achieve multiple functions such as oil absorption, oil application and cleaning.

[0041] Furthermore, such as Figure 4 and Figure 5 As shown, the worm gear 22 has a hollow structure in the middle, and ribs 221 are evenly installed radially in the hollow annular groove.

[0042] The rib 221 enhances the lifting effect of the worm gear 22 on the lubricating oil during rotation, making the lubricating oil flow, preventing sedimentation, and achieving heat dissipation.

[0043] Furthermore, such as Figure 4 and Figure 5 As shown, a central plate 212 is movably installed on the side of the outer shell 21 opposite to the sun gear 23. The central plate 212 is attached to the side wall of the worm gear 22, and both ends of the central plate 212 are elastically connected to the outer shell 21 through a set of central springs 213. The side of the rib plate 221 near the central plate 212 is provided with a slope. The central plate 212 has a "W" shaped structure. The middle part of the central plate 212 is provided with an arc-shaped section that rotates and fits with the central axis of the worm gear 22. The arc-shaped section is evenly provided with grooves. A roller 222 is circumferentially installed at the central axis of the worm gear 22, and the roller 222 contacts the groove when it rotates.

[0044] After the lubricating oil is lifted by the rib 221, when it passes the central plate 212, under the action of gravity and the inclined guiding action of the slope of the rib 221, excess lubricating oil flows into the central plate 212 and falls back to the bottom of the outer shell 21 under the guiding action of the central plate 212. Through the retention action of the central plate 212, the dwell time of the extracted lubricating oil can be increased, thereby realizing the extraction amount of lubricating oil deposited at the bottom by the rib 221, achieving a circulation effect, and improving the density and uniformity of the lubricating oil. With the rotation of the worm gear 22, it drives the roller 222 to rotate circumferentially. Utilizing the brief contact between the roller 222 and the groove during the rotation, combined with the elastic pulling action of the central spring 213, the central plate 212 is in a shaking state, thereby reducing the adhesion and residue of lubricating oil.

[0045] Furthermore, such as Figure 4 and Figure 5 As shown, the central plate 212 is provided with oil filter chambers 214 on both sides of the arc-shaped section.

[0046] The oil filter chamber 214 can receive and filter the lubricating oil after it has been lifted, and can receive and isolate impurities mixed in with the lubricating oil or metal fragments generated by mechanical wear, thereby further improving the quality of the lubricating oil.

[0047] Furthermore, such as Figure 6 and Figure 8 As shown, a slot is provided inside the outer casing 21, which surrounds the worm gear 22. An inner liner 215 is movably installed in the slot. The inner liner 215 passes through the sealing groove with a sealing plate at the bottom of the outer casing 21 and extends to the lower part of the worm gear 22. The inner liner 215 is exposed in the inner cavity of the outer casing 21. Both the oil filter chamber 214 and the inner liner 215 are dense mesh structures.

[0048] The inner liner 215 is located in the inner cavity of the outer shell 21. During the flow of lubricating oil, it flows over the surface of the inner liner 215. At this time, metal debris in the lubricating oil settles in the inner liner 215 and the oil filter chamber 214 during the flow, achieving the dual effect of solid-liquid separator and impurity isolation.

[0049] Furthermore, such as Figure 6 and Figure 8 As shown, a permanent magnet 216 that is magnetically attracted to the inner lining 215 is fixedly installed on the outer wall of the outer shell 21.

[0050] The magnetic properties of the permanent magnet 216 can be used to further enhance the adsorption effect on metal debris in the lubricating oil.

[0051] A vehicle in which the deceleration pedal is driven by a motor assembly consisting of a motor 1, a reducer 2 and an oil film assembly 3.

[0052] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by the present invention. The scope of protection 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 assembly (3) is movably installed inside the reducer (2). The motor (1) includes a base shell (11), a magnet (12), a copper busbar (13), a battery cell (14), an output shaft (15), and a worm gear (16). The exposed end of the output shaft (15) is fixedly connected to the worm gear (16), and the end extends into the reducer (2). The reducer (2) includes Outer shell (21); The worm gear (22) meshes with the worm (16) for transmission; The sun gear (23) is coaxially fixed to one side of the worm gear (22); The internal gear ring (24) is rotatably mounted on the inside of the outer casing (21); Planetary gears (25) are located inside the internal gear ring (24), and multiple planetary gears (25) mesh with the internal gear ring (24) and the sun gear (23) simultaneously in a circular array. Driven shaft (26) is rotatably mounted on end cap inside housing (21), and end cap is fixedly connected to internal 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 outer shell (21). An oil seal (211) is fixedly installed at the oil film groove. An oil-covering plate (31) is fixedly installed on the side of the oil seal (211) facing the inside of the outer shell (21) by several oil-covering springs (32). The oil-covering plate (31) is in elastic contact with the worm (16). The oil-covering plate (31) has an arc-shaped curved surface structure. The oil-covering plate (31) is located above the worm (16). Oil collection brushes (311) are evenly arranged on the side of the oil-covering plate (31) facing the worm (16). The worm gear (22) has a hollow structure in the middle, and ribs (221) are evenly installed radially in its hollow ring groove. A central plate (212) is movably installed on the side of the outer shell (21) opposite to the sun gear (23). The central plate (212) is attached to the side wall of the worm gear (22), and both ends of the central plate (212) are elastically connected to the outer shell (21) through a set of central springs (213). The rib plate (221) is provided with a slope on the side near the central plate (212). The central plate (212) has a "W" shaped structure. The central plate (212) has an arc-shaped section in the middle that rotates and fits with the central shaft of the worm gear (22). The arc-shaped section is evenly provided with grooves. The central shaft of the worm gear (22) is circumferentially mounted with rollers (222), and the rollers (222) contact the grooves when they are running.

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

3. The electric pedal motor assembly according to claim 1, characterized in that: The central plate (212) is provided with oil filter chambers (214) on both sides of the arc segment.

4. An electric pedal motor assembly according to claim 3, characterized in that: The outer casing (21) has a slot, which is arranged around the worm gear (22). An inner liner (215) is movably installed in the slot. The inner liner (215) is inserted into the lower part of the worm gear (22) through the sealing groove with a sealing plate at the bottom of the outer casing (21), and the inner liner (215) is exposed in the inner cavity of the outer casing (21).

5. An electric pedal motor assembly according to claim 4, characterized in that: The oil filter chamber (214) and the inner lining sheet (215) are both dense mesh structures.

6. An electric pedal motor assembly according to claim 5, characterized in that: A permanent magnet (216) that is magnetically attracted to the inner lining (215) is fixedly installed on the outer wall of the outer shell (21).

7. A vehicle, characterized in that, The vehicle's deceleration pedal is driven by a motor assembly as described in any one of claims 1-6.

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