Pedal motor

Abstract

This utility model relates to the field of motor technology, and in particular to a pedal motor, including a motor and a gearbox adapted thereto. The motor includes a housing and a motor component placed inside the housing. The input shaft of the motor component extends through the housing into the gearbox, and the end of the input shaft is provided with a gear. The gearbox includes a housing, an end cover, a planetary gear assembly placed inside the housing, an output shaft passing through the end cover, and an internal gear ring embedded in the housing. The end cover is installed on one side of the housing, and the housing is installed on the other side of the housing. The input shaft and the output shaft are located on the same axis. The gear is used as the first-stage sun gear to cooperate with the planetary gear assembly for transmission. The end of the output shaft placed inside the end cover has a last-stage planetary cage, which cooperates with the planetary gear assembly for transmission. The beneficial effects of this utility model are: the overall structure is more compact and the transmission efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, specifically to a pedal motor. Background Technology

[0002] With the development of vehicle manufacturing technology, people have chosen to install car steps on both sides of the car body with a high chassis to facilitate getting in and out of the car. The extension and retraction of the car steps are controlled by the step motor.

[0003] Utility model patent CN217917781U discloses a low-energy-consumption and energy-saving electric telescopic pedal system and a drive motor. The drive motor includes a motor body, an output shaft, a worm gear, a worm shaft, and a planetary gear assembly. The worm gear is sleeved on one end of the output shaft, and the other end of the worm gear is used for mounting and cooperating with the side step of a car. The worm shaft and the worm gear are in a transmission cooperation to achieve the first deceleration of the output shaft. The planetary gear assembly is sleeved on the output shaft and is used to perform the second deceleration of the output shaft.

[0004] The aforementioned drive motor has the following disadvantages in actual use: 1. The motor body transmits power to the worm gear through the worm gear assembly, and the worm gear assembly then drives the output shaft to rotate. This transmission structure makes it impossible for the motor body and the output shaft to be arranged in a straight line, resulting in an increase in the overall size of the drive motor. When installing this drive motor on the vehicle body, additional installation space is required; 2. Power is transmitted through five stages: "motor output end - worm gear assembly - worm gear assembly - planetary gear assembly - output shaft". This long path transmission structure increases energy loss. Summary of the Invention

[0005] The technical problem to be solved by this utility model is to provide a pedal motor that is more compact in overall structure and improves transmission efficiency, in order to address the shortcomings of the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a pedal motor, comprising a motor and a gearbox adapted thereto. The motor includes a housing and a motor component housed within the housing. The input shaft of the motor component extends through the housing into the gearbox. The end of the input shaft is provided with a gear. The gearbox includes a housing, an end cover, a planetary gear assembly housed within the housing, an output shaft extending through the end cover, and an internal gear ring embedded within the housing. The end cover is mounted on one side of the housing, and the housing is mounted on the other side of the housing. The input shaft and the output shaft are located on the same axis. The gear is used as the first-stage sun gear and engages with the planetary gear assembly for transmission. The end of the output shaft housed within the end cover has a final-stage planetary cage, which engages with the planetary gear assembly for transmission.

[0007] The present invention, possessing the above-mentioned features, achieves a more compact pedal motor structure and reduces overall volume by designing a first-stage sun gear at the input end and a final-stage planetary cage at the output end, which directly cooperates with the planetary gear assembly in the gearbox for transmission. This results in a coaxial structure between the input and output shafts. Furthermore, it eliminates the worm gear transmission structure in the prior art, simplifies the overall transmission structure, and improves transmission efficiency.

[0008] A further feature of this invention is that the planetary gear assembly includes multiple primary planetary gears, a primary planetary cage, multiple intermediate planetary gears, an intermediate planetary cage, and multiple final-stage planetary gears. The primary planetary cage has a primary planetary gear mounted on one end face and an intermediate sun gear on the other end. The end of the movement gear abuts against the primary planetary cage. The multiple primary planetary gears surround the movement gear and mesh with it. The intermediate planetary cage has an intermediate planetary gear mounted on one end face and a final-stage sun gear on the other end face. The multiple intermediate planetary gears surround the intermediate sun gear and mesh with it. The multiple final-stage planetary gears are mounted on the final-stage planetary cage and surround the final sun gear and mesh with it. An internal gear ring is fitted around the outer circumference of the planetary gear assembly and meshes with the primary, intermediate, and final-stage planetary gears simultaneously.

[0009] The present invention, which has the above features, is equipped with a three-stage planetary gear set to maximize the reduction ratio and ensure that the pedal motor has sufficient torque to drive the pedal extension and retraction; all three-stage planetary gear assemblies mesh with the internal gear ring, and the uniform distribution of the three-stage planetary gears ensures that the internal gear ring is subjected to uniform force, thereby improving the motor life.

[0010] A further feature of this invention is that the inner wall of the housing is provided with multiple slots at intervals, the slots are located at the port of the housing, and the outer circumferential surface of the internal gear ring is provided with protrusions that are adapted to the slots.

[0011] The present invention, which has the above-mentioned features, enables the rapid installation of the internal gear ring by setting a slot and a protrusion. Axial positioning can be completed by directly inserting the protrusion into the slot without additional calibration, thus simplifying the assembly process and improving production efficiency.

[0012] A further feature of this invention is that: the outer periphery of the housing is provided with an installation hole, a waterproof rubber plug is embedded in the installation hole, a clamping screw is provided on the outer sleeve of the waterproof rubber plug, the installation hole is provided with an internal thread, the clamping screw is threadedly connected to the installation hole, the end face of the waterproof rubber plug is flush with the end face of the clamping screw, and the waterproof rubber plug is provided with several wire outlet holes.

[0013] The present invention has the above features: the clamping screw ring fixes the waterproof rubber plug in the mounting hole to prevent water from entering the motor; the end face of the waterproof rubber plug is flush with the end face of the clamping screw ring to avoid water accumulation.

[0014] A further feature of this invention is that: the end of the housing facing the motor is provided with a first bearing groove and an input shaft hole, the input shaft hole and the first bearing groove are coaxially arranged, a first bearing is sleeved on the input shaft and the first bearing is placed in the first bearing groove, the end of the end cover facing the motor is provided with a second bearing groove, a second bearing is sleeved on the output shaft and the second bearing is placed in the second bearing groove.

[0015] The present invention, which has the above-mentioned features, reduces the radial runout of the input shaft and output shaft and improves the transmission accuracy by setting a first bearing to support the input shaft and a second bearing to support the output shaft.

[0016] A further feature of this invention is that the open end of the housing is provided with an annular mounting surface, the mounting surface is provided with a plurality of first mounting ears, the outer peripheral surface of the box is provided with a plurality of mounting ear blocks arranged along its length direction, and the outer peripheral surface of the end cover is provided with a plurality of second mounting ears. When the end cover, box, and housing are aligned and installed, the first mounting ears, mounting ear blocks, and second mounting ears correspond to each other and are detachably connected by fasteners.

[0017] The present invention, which has the above-mentioned features, can be assembled simply by aligning the end cap, the box body, and the shell, by aligning the first mounting ear, the mounting ear block, and the second mounting ear, thereby improving assembly efficiency and connection strength.

[0018] A further feature of this invention is that: the outer circumferential surface of the housing facing the end cover is provided with a plurality of third mounting ears, and the end cover is provided with a plurality of fourth mounting ears that cooperate with the third mounting ears. When the third mounting ears and the fourth mounting ears are aligned, the fasteners pass through the third mounting ears and the fourth mounting ears to install the pedal motor to the vehicle body.

[0019] The present invention, which has the above-mentioned features, allows the pedal motor to be directly mounted on the vehicle body via fasteners, thus simplifying the installation structure of the pedal motor.

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0021] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model.

[0022] Figure 2 This is an exploded view of an embodiment of the present utility model.

[0023] Figure 3 This is an exploded view of the planetary gear assembly according to an embodiment of the present invention.

[0024] Figure 4 This is a schematic diagram of the internal structure of an embodiment of the present utility model.

[0025] Figure 5 This is a schematic diagram of the bearing installation according to an embodiment of the present invention.

[0026] Figure 6 This is a schematic diagram of the installation of the internal gear ring in an embodiment of this utility model. Detailed Implementation

[0027] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

[0028] like Figure 1-6 The illustrated pedal motor 1 includes a motor 1 and a gearbox 2 adapted thereto. The motor 1 includes a housing 11 and a motor component (not shown) placed inside the housing 11. The input shaft 12 of the motor component extends through the housing 11 into the gearbox 2. The end of the input shaft 12 is provided with a gear 13. The gearbox 2 includes a housing 21, an end cover 22, a planetary gear assembly 3 placed inside the housing 21, an output shaft 23 passing through the end cover 22, and an internal gear ring 24 embedded in the housing 21. The end cover 22 is installed on one end face of the housing 21, and the housing 11 is installed on the other end face of the housing 21. The input shaft 12 and the output shaft 23 are located on the same axis. The gear 13 serves as the first-stage sun gear and engages with the planetary gear assembly 3 for transmission. The end of the output shaft 23 placed inside the end cover 22 has a final-stage planetary cage 231, which engages with the planetary gear assembly 3 for transmission.

[0029] Planetary gear assembly 3 includes multiple first-stage planetary gears 31, a first-stage planetary cage 32, multiple intermediate planetary gears 33, an intermediate planetary cage 34, and multiple final-stage planetary gears 35. The first-stage planetary cage 32 has a first-stage planetary gear 31 mounted on one end and an intermediate sun gear 321 at the other end. The end of the movement gear 13 abuts against the first-stage planetary cage 32. Multiple first-stage planetary gears 31 surround the outer periphery of the movement gear 13 and mesh with it. One end of the intermediate planetary cage 34... One end face is equipped with intermediate planetary gears 33, and the other end face is provided with final stage sun gears 341. Multiple intermediate planetary gears 33 surround the outer periphery of intermediate sun gears 341 and mesh with it. Multiple final stage planetary gears 35 are mounted on the final stage planetary carrier. Multiple final stage planetary gears 35 surround the outer periphery of final stage sun gears 341 and mesh with it. An internal gear ring 24 is sleeved on the outer periphery of planetary gear assembly 3. The internal gear ring meshes with the first stage planetary gear 31, intermediate planetary gears 33 and final stage planetary gears 35 at the same time.

[0030] Multiple slots 211 are provided at intervals on the inner wall of the housing 21. The slots 211 are located at the port of the housing 21. The outer peripheral surface of the internal gear ring 24 is provided with protrusions 241 that are adapted to the slots 211.

[0031] The outer periphery of the housing 21 is provided with mounting holes 212, a waterproof rubber plug 4 is embedded in the mounting holes 212, a clamping screw ring 5 is provided on the outer sleeve of the waterproof rubber plug 4, the mounting holes 212 are provided with internal threads, the clamping screw ring 5 is threadedly connected to the mounting holes 212, the end face of the waterproof rubber plug 4 is flush with the end face of the clamping screw ring 5, and the waterproof rubber plug 4 is provided with several wire outlet holes 41.

[0032] The end of the housing 21 facing the motor 1 is provided with a first bearing groove 213 and an input shaft hole 214. The input shaft hole 214 and the first bearing groove 213 are coaxially arranged. The first bearing 6 is sleeved on the input shaft 12 and placed in the first bearing groove 213. The end of the end cover 22 facing the motor 1 is provided with a second bearing groove 221. The output shaft 23 is sleeved with a second bearing 7 and placed in the second bearing groove 221.

[0033] The open end of the housing 11 is provided with an annular mounting surface 111, and the mounting surface 111 is provided with a plurality of first mounting ears 1111. The outer peripheral surface of the housing 21 is provided with a plurality of mounting ear blocks 214 arranged along its length direction. The outer peripheral surface of the end cover 22 is provided with a plurality of second mounting ears 222. When the end cover 22, housing 21, and housing 11 are aligned and installed, the first mounting ears 1111, mounting ear blocks 214, and second mounting ears 222 correspond to each other and are detachably connected by fasteners, preferably screws, bolts, etc.

[0034] The outer circumferential surface of the housing 21 facing the end cover 22 is provided with a plurality of third mounting ears 215, and the end cover 22 is provided with a plurality of fourth mounting ears 223 that cooperate with the third mounting ears 215. When the third mounting ears 215 and the fourth mounting ears 223 are aligned, fasteners pass through the third mounting ears 215 and the fourth mounting ears 223 to install the pedal motor 1 to the vehicle body. The fasteners are preferably screws, bolts, etc.

[0035] When in use, the aforementioned pedal motor is mounted on the vehicle body, and the side pedal moves telescopically relative to the vehicle body via the pedal motor.

[0036] When the pedal motor is operating, the primary planetary gear is driven to rotate via a mechanism integrated with the input shaft. The mechanism gear and the primary planetary gear rotate in opposite directions. Simultaneously, the primary planetary gear meshes with an internal gear ring, which is fixedly connected to the housing. This primary planetary gear drives the primary planetary cage to rotate in the same direction as the mechanism gear, thus completing the first stage of speed reduction. Similarly, the rotation of the primary planetary cage drives the intermediate sun gear, which is coaxial with it. The intermediate sun gear, through its meshing intermediate planetary gear, drives the intermediate planetary cage to rotate, completing the second stage of speed reduction. The rotation of the intermediate planetary cage drives the final planetary cage to rotate, causing the output shaft, integrated with the final planetary cage, to rotate, completing the third stage of speed reduction. Furthermore, the rotation direction of the output shaft is opposite to the rotation direction of the motor's input shaft.

Claims

1. A pedal motor comprising a motor and a reduction gearbox adapted therewith, characterized in that: The motor includes a housing and a motor component housed within the housing. The input shaft of the motor component extends through the housing into the gearbox. The end of the input shaft is provided with a gear. The gearbox includes a housing, an end cover, a planetary gear assembly housed within the housing, an output shaft extending through the end cover, and an internal gear ring embedded within the housing. The end cover is mounted on one side of the housing, and the housing is mounted on the other side of the housing. The input shaft and the output shaft are located on the same axis. The gear is used as the first-stage sun gear and engages with the planetary gear assembly for transmission. The end of the output shaft housed within the end cover has a final-stage planetary cage, which engages with the planetary gear assembly for transmission.

2. A pedal motor according to claim 1, characterized in that: The planetary gear assembly includes multiple primary planetary gears, a primary planetary cage, multiple intermediate planetary gears, an intermediate planetary cage, and multiple final-stage planetary gears. The primary planetary cage has a primary planetary gear mounted on one end face and an intermediate sun gear on the other end. The end of the movement gear abuts against the primary planetary cage. The multiple primary planetary gears surround the outer circumference of the movement gears and mesh with them. The intermediate planetary cage has an intermediate planetary gear mounted on one end face and a final-stage sun gear on the other end face. The multiple intermediate planetary gears surround the outer circumference of the intermediate sun gears and mesh with them. The multiple final-stage planetary gears are mounted on the final-stage planetary cage and surround the outer circumference of the final-stage sun gears and mesh with them. An internal gear ring is fitted around the outer circumference of the planetary gear assembly and meshes with the primary, intermediate, and final-stage planetary gears simultaneously.

3. The pedal motor of claim 1, wherein: The inner wall of the box is provided with multiple slots at intervals. The slots are located at the box port. The outer peripheral surface of the internal gear ring is provided with protrusions that are adapted to the slots.

4. A pedal motor according to any one of claims 1 to 3, wherein: The outer periphery of the housing is provided with mounting holes, a waterproof rubber plug is embedded in the mounting holes, a compression screw is provided on the outer sleeve of the waterproof rubber plug, the mounting holes are provided with internal threads, the compression screw is threadedly connected to the mounting holes, the end face of the waterproof rubber plug is flush with the end face of the compression screw, and the waterproof rubber plug is provided with several wire outlet holes.

5. A pedal motor according to any one of claims 1 to 3, wherein: The housing has a first bearing groove and an input shaft hole at the end facing the motor. The input shaft hole and the first bearing groove are coaxially arranged. A first bearing is sleeved on the input shaft and placed in the first bearing groove. The end cover has a second bearing groove at the end facing the motor. A second bearing is sleeved on the output shaft and placed in the second bearing groove.

6. A pedal motor according to any one of claims 1-3, characterized in that: The open end of the housing is provided with an annular mounting surface, and the mounting surface is provided with a plurality of first mounting ears. The outer peripheral surface of the box is provided with a plurality of mounting ear blocks arranged along its length direction. The outer peripheral surface of the end cover is provided with a plurality of second mounting ears. When the end cover, box, and housing are aligned and installed, the first mounting ears, mounting ear blocks, and second mounting ears correspond to each other and are detachably connected by fasteners.

7. A pedal motor according to claim 6, wherein: The outer circumferential surface of the housing facing the end cover is provided with a plurality of third mounting ears, and the end cover is provided with a plurality of fourth mounting ears that cooperate with the third mounting ears. When the third mounting ears and the fourth mounting ears are aligned, the fasteners pass through the third mounting ears and the fourth mounting ears to install the pedal motor to the vehicle body.

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