Driving assembly of automobile electric side sliding door and automobile electric side sliding door

Abstract

The invention discloses a driving assembly of an automobile electric side sliding door and the automobile electric side sliding door, and relates to the field of automobile parts, the driving assembly comprises a wire winding box, and the wire winding box is provided with a pull wire and a wire winding wheel used for winding the pull wire; the outer rotor motor is used for providing torque for the reel, the outer rotor motor comprises an output shaft, and the output shaft and the reel are arranged in parallel; the controller is electrically connected with the outer rotor motor and is used for controlling the operation of the outer rotor motor; the speed reducer is used for transmitting torque of the outer rotor motor to the winding wheel and comprises a first support located between the outer rotor motor and the winding wheel, a first gear and a second gear are arranged on the first support, the number of teeth of the first gear is smaller than that of teeth of the second gear, and the first gear and the output shaft are coaxially arranged; the second gear and a rotating shaft of the reel are coaxially arranged, and the controller is detachably installed on the first support. According to the driving assembly disclosed by the invention, the noise in the operation process is reduced by optimizing the structure.

Description

Technical Field

[0001] The present invention relates to the field of automobile parts, and in particular to a drive assembly of an automobile electric side sliding door and an automobile electric side sliding door. Background Art

[0002] Some cars have sliding doors, which require a sliding track located below, on the roof, or in the middle of the door. To accommodate the track, the door itself is often thicker and heavier, requiring a strong push and pull to open and close. For added convenience, some vehicles have electric sliding doors.

[0003] Electric sliding doors include a drive system. Generally, the drive system uses a retractable cable to drag the sliding door. The drive system needs to have sufficient force to drag the sliding door and lock it with the locking mechanism. The drive system includes a brushless motor and a reducer. The reducer can reduce the speed of the brushless motor's output shaft and increase the torque. Planetary gear reducers are the mainstream choice. Planetary gear reducers have a sophisticated structure and require high gear processing precision. Due to the large number of internal gears, they can generate noticeable noise. Summary of the Invention

[0004] The present invention aims to solve one of the technical problems in the related art to a certain extent. To this end, the technical problem to be solved by the present invention is to overcome the shortcomings of the existing technology and propose a drive assembly for an automobile electric sliding door, which reduces noise during operation by optimizing the structure.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] The transmission mechanism of the present invention is a pair of transmission mechanisms, each of which is connected to the transmission mechanism of the present invention, wherein the transmission mechanism is connected to the transmission mechanism of the present invention, and the transmission mechanism is connected to the transmission mechanism of the present invention.

[0007] The present invention discloses a drive assembly for use in automobiles, which is used to control the automatic opening and closing of a side sliding door. The drive assembly includes an outer rotor motor, a reducer, a controller, and a winding box. The outer rotor motor is capable of generating torque. The reducer is capable of reducing the speed of the outer rotor motor output, increasing the torque output by the outer rotor motor, and transmitting the torque to a winding wheel in the winding box. The winding wheel can rotate under the action of the torque to retract and release the pull wire. During the retraction and release process, the pull wire drags the side sliding door to slide, thereby achieving the purpose of controlling the automatic opening and closing of the side sliding door. The reducer is positioned between the winding wheel and the outer rotor motor. The torque of the outer rotor motor is transmitted to the first gear, then transmitted to the second gear through meshing transmission, and finally the second gear transmits the torque to the winding wheel. Because the output shaft and the winding wheel are arranged in parallel, the first gear and the second gear are also arranged in parallel. A space for assembling the controller can be formed on the side of the outer rotor motor on the reducer, leaving sufficient assembly space for the controller to facilitate the disassembly and assembly of the controller. The controller can be pre-installed when the drive assembly is installed, thereby facilitating the disassembly and assembly of the entire drive assembly.

[0008] Sliding doors require automatic opening and closing. Generally, the force required to slide a sliding door is less than the force required to push it into engagement with a door lock. The rotor of an outer rotor motor is located outside the stator. Compared to inner rotor motors, this allows for a larger rotor diameter without changing dimensions, resulting in a longer electromagnetic arm. This allows for a greater torque output to the winding reel without changing input power, ensuring the sliding door can withstand greater force for stable automatic opening and closing. The reducer includes a first gear and a second gear. The first gear rotates at the same speed as the output shaft, while the second gear rotates at the same speed as the winding reel. The first and second gears mesh, so torque transmitted from the output shaft to the first gear is transmitted to the second gear through meshing, and then to the winding reel via the second gear. Since the first gear has fewer teeth than the second gear, its speed is greater than the second gear, thereby increasing the torque transmitted to the winding reel by the second gear. Furthermore, because outer rotor motors offer low speed and high torque, the speed can be reduced to the desired value while still generating sufficiently strong torque using only a single-stage reduction gear system formed by the first and second gears. Compared with the planetary gear reducer used in the prior art, the present application uses a first gear and a second gear to form a first-stage reduction group. This reduces the number of gears and reduces the noise generated by the gear meshing process during the transmission process. At the same time, the reduction in the number of gears and the lowering of the requirements for gear processing accuracy can also reduce processing and manufacturing costs.

[0009] Optionally, the controller includes a circuit board and an interface electrically connected to the circuit board. The outer rotor motor is a brushless motor. A portion of the circuit board extends into the outer rotor motor and remains fixed relative to the outer rotor motor. The portion of the circuit board extending into the outer rotor motor is provided with a Hall element. Various electronic components can be mounted on the circuit board to control the outer rotor motor. The interface enables signal exchange and power transmission with the circuit board. The portion of the circuit board extending into the outer rotor motor is provided with a Hall element. The Hall element detects the rotor's magnetic field to determine the rotor's real-time position, providing a commutation signal to achieve orderly switching of the stator winding current, ensuring continuous and stable rotation of the motor. The Hall element remains fixed relative to the circuit board and the outer rotor motor, preventing changes in the relative position of the Hall element and the outer rotor motor from affecting the Hall element's magnetic field sensing error and thus affecting the motor's control accuracy. Furthermore, because the first bracket provides a large mounting space, it can accommodate not only the controller but also sufficient space for arranging larger electronic components on the circuit board.

[0010] Optionally, the outer rotor motor further includes a housing, which is fixed to the first bracket. An opening is provided on the side of the housing, and the circuit board extends into the housing from the opening and remains relatively fixed to the stator. An opening is provided on the side of the motor for the circuit board to extend into, so that the Hall element can sense the magnetic field of the rotor as the circuit board enters the housing, thereby facilitating the assembly of the outer rotor motor and the controller. Because the outer rotor motor and the controller are both fixed to the first bracket, they can remain relatively fixed after assembly. The circuit board does not need to be fixed to the outer rotor motor, and the circuit board can be directly disassembled from the outer rotor motor. Compared with the solution of fixing the Hall element on the motor stator in the prior art, there is no need to replace the entire outer rotor motor when a problem occurs with the Hall element, which can reduce subsequent maintenance costs.

[0011] Optionally, the outer rotor motor is a three-phase motor, and the housing is provided with three openings arranged at intervals. The circuit board extends to form three extension plates spaced apart from each other, and the three extension plates extend into the housing through an opening respectively. Each extension plate is provided with a Hall element. Three-phase brushless motors have excellent performance and are widely used. Correspondingly, the number of Hall elements also needs to be set to three, and they need to be spaced apart from each other. The circuit board has a large width so that the three Hall elements can be spaced apart from each other. In order to avoid the opening size being too large and affecting the strength of the housing, three openings are provided on the housing corresponding to the three Hall elements. Three extension plates extend from the circuit board to respectively assemble the three Hall elements, and each extends into the housing from an opening.

[0012] Optionally, the first gear and the second gear mesh with each other via helical teeth. The first and second gears engage in a progressive manner, resulting in smooth transmission, strong load-bearing capacity, and lower meshing noise, thereby reducing noise generated during operation of the drive assembly. Furthermore, the meshing can stably drive the winding wheel to control the sliding door's stable sliding.

[0013] Optionally, the outer rotor motor includes an outer shell, the controller includes a second bracket, the outer shell includes a first shell and a second shell covering the first shell, the first bracket includes a first frame and a second frame connected to the first frame, the first frame is integrally formed on the side of the first shell, the second frame is integrally formed on the side of the second shell, the first frame is fixed to the winding box, and the second bracket is fixed to the second frame. Because the first frame is integrally formed with the first shell and the second frame is integrally formed with the second shell, the reducer and outer rotor motor can be assembled simultaneously during assembly. When assembling with the winding box, the first bracket can be first fixed to the winding box, and then the components of the reducer and outer rotor motor can be assembled to the first frame and the first shell. Then, the second frame and the second shell can be covered to complete the simultaneous assembly of the outer rotor motor and reducer on the winding box. At the same time, because the shell portions of the reducer and outer rotor motor are integrally formed, the components of the two can better cooperate, thereby improving the transmission accuracy between the two.

[0014] Optionally, the winding box is provided with a first mounting hole, the first frame is provided with a second mounting hole, the second mounting hole is a through hole, the second frame is provided with a third mounting hole, and the second bracket is provided with a fourth mounting hole. The first fastener passes through the first mounting hole and is locked into the second mounting hole to fix the first frame to the winding box. The second fastener passes through the fourth mounting hole and the third mounting hole in sequence and is locked into the second mounting hole to fix the second frame to the first frame and the second bracket to the second frame. The first fastener can fix the winding box and the first frame, and the second fastener can simultaneously fix the second frame and the second bracket to the first frame. The second mounting hole is a through hole. The first fastener and the second fastener are both locked into the second mounting hole to fix the winding box, the second frame and the second bracket to the first frame. This eliminates the need to provide additional mounting holes on the second frame for assembly, reduces structural complexity, and also increases the speed of disassembly and assembly of the reducer, winding box, controller, and outer rotor motor.

[0015] Optionally, one of the first and second housings is provided with a fifth mounting hole, and the other is provided with a sixth mounting hole, and a third fastener is passed through the fifth mounting hole and locked into the sixth mounting hole to fix the second housing to the first housing; or, the third fastener is passed through the fifth and sixth mounting holes and then screwed to fix the second housing to the first housing. Because the first and second housings are arranged on the sides of the reducer, although they are respectively integrally formed with the first and second frames, the first and second housings can also remain relatively fixed after the first and second frames are fixed by the second fasteners. However, the first and second frames will also fix the second bracket to the second frame at the same time. If the controller is to be removed, the first and second housings will also be separated due to the removal of the second fastener. For this purpose, the third fastener, the fifth mounting hole, and the sixth mounting hole are provided to lock the first and second housings, so that the first and second housings can remain in a mating state when the controller is removed.

[0016] Optionally, the winding box is further provided with two guide wheels and two sleeves, and the two sleeves correspond to the two guide wheels respectively. The two ends of the wire wound on the winding wheel are respectively passed around a guide wheel and then through the sleeve. The wire is wound on the winding wheel. When the winding wheel rotates, the wire at one end is wound closer to the winding wheel due to being wound, and the wire on the other side is released due to the rotation of the winding wheel and moves away from the winding wheel, so as to drag the side sliding door to slide. When the winding wheel reverses, the side sliding door moves in the opposite direction. The guide wheel can guide the wire to prevent the wire from rubbing against other internal components during the process of being wound by the winding wheel, causing the wire to be damaged or broken, or causing the winding box to rupture. The sleeve can protect the wire to prevent the wire from rubbing against other structures on the vehicle body and causing damage.

[0017] The present invention also discloses an electric sliding door for an automobile, comprising a door body and a slider disposed on the door body. A slide rail is disposed on the automobile body corresponding to the slider and slidably engaged with the slider. The door also includes the drive assembly disclosed in the above embodiment, the drive assembly being mounted on the automobile body, with the ends of the pull wire being connected to opposite sides of the slider. The electric sliding door for an automobile disclosed in the present invention possesses all the beneficial effects of the drive assembly described above and will not be further elaborated herein.

[0018] These features and advantages of the present invention will be further disclosed in the following detailed description and accompanying drawings. The preferred embodiments and means of the present invention will be fully illustrated in conjunction with the accompanying drawings, but are not intended to limit the technical solutions of the present invention. Furthermore, although multiple features, elements, and components may be present in each of the following text and accompanying drawings, they may be labeled with different symbols or numbers for convenience, but all represent components with the same or similar structure or function. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below in conjunction with the accompanying drawings:

[0020] Figure 1 It is a schematic structural diagram of the drive assembly in the present invention.

[0021] Figure 2 This is a schematic diagram of the structure of the drive assembly of the present invention when the outer rotor motor is not installed.

[0022] Figure 3 Schematic diagram of the coordination between the outer rotor motor and the controller in the present invention.

[0023] Figure 4 This is an exploded view A of the drive assembly of the present invention.

[0024] Figure 5 This is the exploded view B of the drive assembly of the present invention.

[0025] Figure 6 This is a schematic diagram of the installation of another drive assembly in the present invention.

[0026] Figure 7 It is a cross-sectional view of another drive assembly in the present invention.

[0027] Figure 8 Schematic diagram of the internal structure of the winding box in the present invention.

[0028] Reference numerals:

[0029] Outer rotor motor 100, housing 110, first shell 111, fifth mounting hole 1111, second shell 112, sixth mounting hole 1121, stator 120, rotor 130, output shaft 140, opening 150;

[0030] Reducer 200, first bracket 210, first frame 211, second mounting hole 2111, second frame 212, third mounting hole 2121, first gear 220, second gear 230;

[0031] Controller 300, circuit board 310, interface 320, Hall element 330, second bracket 340, fourth mounting hole 341, extension plate 350, Hall plate 360, data line 370;

[0032] Winding box 400, winding reel 410, first mounting hole 420, guide wheel 430, sleeve 440;

[0033] Assembly area 500, wire rack 510;

[0034] A first fastening member 600 , a second fastening member 610 , and a third fastening member 620 . DETAILED DESCRIPTION

[0035] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described in the embodiments are intended to explain the present invention and are not to be construed as limiting the present invention.

[0036] References in this specification to "one embodiment," "an example," or "an example" mean that a particular feature, structure, or characteristic described in connection with the embodiment itself can be included in at least one embodiment disclosed herein. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment.

[0037] Reference Figures 1 to 5 、 Figure 8 The embodiment of the present invention discloses a drive assembly for an electric side sliding door of an automobile. The drive assembly is used to drive the side sliding door to slide and realize automatic opening and closing of the side sliding door. The drive assembly includes an outer rotor motor 100, a reducer 200, a controller 300 and a winding box 400. The outer rotor motor 100 can output torque and provide it to the winding box 400. The reducer 200 can reduce the speed output by the outer rotor motor 100, increase the torque output by the outer rotor motor 100, and transmit the enhanced torque to the winding box 400. The winding box 400 is provided with a pull wire (not shown in the figure) for dragging the side sliding door body to slide and a winding wheel 410 for winding the pull wire. The pull wire is wound on the winding wheel 410. The winding wheel 410 can rotate under the action of torque to retract and release the pull wire. During the retraction and release process, the pull wire can drag the side sliding door to slide, thereby achieving the purpose of controlling the automatic opening and closing of the side sliding door.

[0038] The reducer 200 includes a first bracket 210 located between the outer rotor motor 100 and the winding reel 410. The first bracket 210 is provided with a torque input end and a torque output end arranged in parallel with the torque input end. The torque input end is transmission-connected to the outer rotor motor 100, and the torque output end is transmission-connected to the winding reel 410. The reducer 200 is positioned between the winding reel 410 and the outer rotor motor 100. The torque of the outer rotor motor 100 is input to the reducer 200 through the torque input end, and then transmitted to the winding reel 410 through the torque output end. Because the torque input end and the torque output end are arranged in parallel, there is a space on the side of the outer rotor motor 100 on the first bracket 210 of the reducer 200, which serves as an assembly area 500 for assembling the controller 300. The assembly area 500 has a large space, leaving sufficient assembly space for the controller 300 to facilitate the installation of the controller 300. The controller 300 can be pre-installed in the assembly area 500 when the drive assembly is installed, thereby facilitating the disassembly and assembly of the entire drive assembly.

[0039] The outer rotor motor 100 includes a housing 110, a stator 120, a rotor 130, and an output shaft 140. The stator 120 and rotor 130 are mounted on the housing 110. The output shaft 140 extends beyond the housing 110 to output torque. The rotor 130 rotates relative to the stator 120, driving the output shaft 140. The output shaft 140 is in transmission connection with the torque input terminal. Compared to an inner rotor motor, the outer rotor motor 100 can increase the diameter of the rotor 130 while maintaining the same size. This provides a longer electromagnetic arm and, with the same input power, can deliver greater torque to the reel 410. This ensures that the sliding door receives a greater force for stable automatic opening and closing, preventing failure of the sliding door to engage with the door lock due to insufficient force applied to the sliding door.

[0040] The outer rotor motor 100 features low speed and high torque. The torque input includes a first gear 220, and the torque output includes a second gear 230 meshing with the first gear 220. The first gear 220 has fewer teeth than the second gear 230. The first gear 220 is mounted on the output shaft 140 and rotates synchronously with the output shaft 140. The two can be connected by a flat key. The second gear 230 is mounted on the rotating shaft of the winding reel 410 and drives the rotating shaft to rotate synchronously with it. The second gear 230 and the rotating shaft of the winding reel 410 are connected by a flat key, allowing the reducer 200, winding box 400, and outer rotor motor 100 to be disassembled for maintenance. The rotational speed of the first gear 220 is the same as that of the output shaft 140, and the rotational speed of the second gear 230 is the same as that of the winding reel 410. The first gear 220 and the second gear 230 are meshed, so the torque transmitted from the output shaft 140 to the first gear 220 can be transmitted to the second gear 230 through meshing, and then transmitted to the winding reel 410 via the second gear 230. In addition, the number of teeth on the first gear 220 is less than that on the second gear 230, so the rotational speed of the first gear 220 is greater than that of the second gear 230, thereby increasing the torque transmitted to the winding reel 410 by the second gear 230.

[0041] Because the speed of the outer rotor motor 100 is not high, the speed can be reduced to the required value while still generating sufficiently strong torque through the single-stage reduction formed by the cooperation of the first gear 220 and the second gear 230. Compared with the planetary gear reducer used in the prior art, the present application uses the first gear 220 and the second gear 230 to form a single-stage reduction group. This reduces the number of gears and reduces the noise generated by the gear meshing process during the transmission process. At the same time, the reduced number of gears and the lower gear processing precision requirements can also reduce processing and manufacturing costs.

[0042] Compared with the planetary gear reducer, the technical solution in this application can simplify the structure of the reducer 200 while ensuring the torque, and the reducer 200 and the outer rotor motor 100 can also be disassembled, solving the pain point that the planetary gear is connected to the planetary carrier and the output shaft 140 after riveting and cannot be disassembled.

[0043] In addition, since the reducer 200 and the outer rotor motor 100 can be customized according to the function and size requirements by adjusting the number of teeth, module and displacement coefficient, the outline size can be expanded in the lateral direction to increase the space, and then the heat dissipation surface area can be increased by optimizing the design of the surface ribs, thereby improving the heat dissipation efficiency of the gear meshing and extending the life.

[0044] Reference Figure 4 Based on the above embodiment, in one embodiment of the present invention, the first gear 220 and the second gear 230 engage with each other via helical teeth. This progressive engagement between the first gear 220 and the second gear 230 provides smooth transmission, strong load-bearing capacity, and reduced meshing noise, thereby reducing noise generated during operation of the drive assembly. Furthermore, the meshing can stably drive the winding wheel 410 to control the sliding door's stable movement.

[0045] Reference Figures 2 to 5 Based on the above embodiments, in one embodiment of the present invention, the controller 300 includes a circuit board 310 and an interface 320 electrically connected to the circuit board 310. The outer rotor motor 100 is a brushless motor. Part of the circuit board 310 extends into the outer rotor motor 100 and remains relatively fixed with the outer rotor motor 100, and the part of the circuit board 310 extending into the outer rotor motor 100 is provided with a Hall element 330. Various electronic components can be assembled on the circuit board 310 to control the motor, and the interface 320 can exchange signals and transmit power with the circuit board 310. The part of the circuit board 310 extending into the outer rotor motor 100 is provided with a Hall element 330, so that the magnetic field of the rotor 130 is detected by the Hall element 330 to determine the real-time position of the rotor 130, and a commutation signal is provided to realize the orderly switching of the stator 120 winding current to ensure continuous and stable rotation of the motor. The Hall element 330 is arranged on the side of the circuit board 310 facing the stator 120, such as Figure 3 As shown, Figure 3 The Hall element 330 drawn with dotted lines is actually disposed below the circuit board 310 , but is shown in dotted line form for ease of explanation.

[0046] The Hall effect element 330 remains fixed relative to the circuit board 310 and the outer rotor motor 100, preventing any relative positional shifts between the Hall effect element 330 and the outer rotor motor 100, which could affect the Hall effect element 330's magnetic field sensing errors and thus affect motor control accuracy. Furthermore, the assembly area 500 formed on the first bracket 210 provides ample space for not only accommodating the controller 300 but also providing ample space for arranging larger electronic components on the circuit board 310.

[0047] The controller 300 includes a second bracket 340, which is fixed to the assembly area 500. The circuit board 310 is fixed to the second bracket 340, and the outer rotor motor 100 is fixed to the first bracket 210. The controller 300 is fixed to the first bracket 210 via the second bracket 340, maintaining relative fixity with the first bracket 210. The circuit board 310 is fixedly mounted on the second bracket 340, maintaining relative fixity with the second bracket 340. The housing 110 is fixed to the first bracket 210. Therefore, the entire outer rotor motor 100 can remain relatively fixed with the second bracket 340. The relative position of the circuit board 310 and the outer rotor motor 100 can be maintained fixed, allowing the Hall effect element 330, which is separate from the outer rotor motor 100, to accurately detect changes in the magnetic field, ensuring accurate control of the motor.

[0048] Since the positions of the controller 300 and the outer rotor motor 100 on the first bracket 210 are fixed, the relative positions of the circuit board 310 and the outer rotor motor 100 remain unchanged after the two are installed. The controller 300 can be disassembled and reinstalled to ensure that the Hall element 330 can still return to its original position after reinstallation.

[0049] Because the circuit board 310 can maintain a constant relative position with the outer rotor motor 100, the position of the Hall element 330 in the outer rotor motor 100 is fixed. This eliminates the need to fix the Hall element 330 to the stator 120 as is commonly done in the prior art, making it easier to disassemble and assemble the controller 300. Furthermore, when the Hall element 330 is damaged, the controller 300 can be removed for repair without having to replace the entire motor as is commonly done in the prior art.

[0050] Reference Figures 2 to 5Based on the above embodiment, in another embodiment of the present invention, an opening 150 is provided on the side of the housing 110, through which the circuit board 310 extends into the housing 110. The opening 150 is also provided on the side of the motor to allow the circuit board 310 to extend therethrough, allowing the Hall effect element 330 to sense the magnetic field of the rotor 130 as the circuit board 310 enters the housing 110. By providing the opening 150, the controller 300 and the outer rotor motor 100 can be assembled. The controller 300 can control the motor simply by inserting the circuit board 310 into the outer rotor motor 100. No additional assembly or assembly structure is required between the two, thus facilitating assembly of the controller 300.

[0051] Among them, the outer rotor motor 100 is a three-phase motor. The three-phase brushless motor has excellent performance and is widely used. Correspondingly, the number of Hall elements 330 also needs to be set to three, and they need to be set at intervals. Generally, there are two mainstream settings. One is to be 120° apart from each other, and the other is to be 60° apart from each other. In this application, the three Hall elements 330 are arranged in a manner of being 60° apart from each other. In order to avoid the opening 150 being too large and affecting the strength of the housing 110, three openings 150 are provided on the housing 110 corresponding to the three Hall elements 330. Three extension plates 350 extend from the circuit board 310 to respectively assemble the three Hall elements 330, and each extends into the housing 110 from one opening 150.

[0052] Reference Figure 6 and Figure 7 Unlike the above embodiment, in another embodiment of the present invention, the controller 300 includes a Hall plate 360, a circuit board 310 and an interface 320. The Hall plate 360 ​​is arranged in the housing 110 and is fixedly mounted on the stator 120 and fixed relative to the stator 120, so that the position of the Hall element 330 on the Hall plate 360 ​​on the outer rotor motor 100 is fixed and can accurately detect the magnetic field change, thereby ensuring the control accuracy of the motor. The housing 110 is provided with an opening 150, and the interface 320 is provided in the assembly area 500 and is passed through The data line 370 passing through the opening 150 is electrically connected to the Hall plate 360, so that the circuit board 310 can collect the data signal of the Hall plate 360 ​​to control the outer rotor motor 100. A wire fixing frame 510 fixed on the first bracket 210 for fixing the data line 370 is provided in the assembly area 500. The wire fixing frame 510 can fix the data line 370, making the data line 370 between the wire fixing frame 510 and the Hall plate 360 ​​more stable, thereby avoiding interruption of the connection between the data line 370 and the Hall plate 360 ​​to improve stability.

[0053] Reference Figures 2 to 5 Based on the above embodiment, in another embodiment of the present invention, the assembly structure and assembly method of the entire drive assembly housing are specifically disclosed.

[0054] The housing 110 includes a first housing 111 and a second housing 112 that covers the first housing 111. The first bracket 210 includes a first frame 211 and a second frame 212 connected to the first frame 211. The first frame 211 is integrally formed with the side of the first housing 111, and the second frame 212 is integrally formed with the side of the second housing 112. The first frame 211 is fixed to the winding box 400, and the second bracket 340 is fixed to the second frame 212. The opening 150 for the controller 300 to obtain changes in the motor's magnetic field is located on the second housing 112.

[0055] Because the first frame 211 is integrally formed with the first housing 111, and the second frame 212 is integrally formed with the second housing 112, the reducer 200 and the outer rotor motor 100 can be assembled simultaneously during assembly. When assembling the reducer 200 with the winding box 400, the first frame 210 can be first secured to the winding box 400, and then the components of the reducer 200 and the outer rotor motor 100 can be assembled to the first frame 211 and the first housing 111. Finally, the second frame 212 and the second housing 112 can be closed to complete the simultaneous assembly of the outer rotor motor 100 and the reducer 200 on the winding box 400.

[0056] At the same time, since the reducer 200 and the housing portion of the outer rotor motor 100 are integrally formed, the components of the two can be better matched, so that the transmission accuracy between the two is higher.

[0057] Specifically, a first mounting hole 420 is provided on the winding box 400, a second mounting hole 2111 is provided on the first frame 211, a third mounting hole 2121 is provided on the second frame 212, and a fourth mounting hole 341 is provided on the second bracket 340. The first mounting hole 420, the second mounting hole 2111, the third mounting hole 2121, and the fourth mounting hole 341 are all through holes, and an internal thread is provided in the second mounting hole 2111.

[0058] The first fastener 600 passes through the first mounting hole 420 and is locked into the second mounting hole 2111, securing the first frame 211 to the winding box 400. The second fastener 610 passes through the fourth mounting hole 341 and the third mounting hole 2121, and is locked into the second mounting hole 2111, securing the second frame 212 to the first frame 211 and the second bracket 340 to the second frame 212. This also locks the first housing 111 and the second housing 112. The first fastener 600 and the second fastener 610 are bolts with external threads that can be threadedly engaged with the second mounting hole 2111. The first fastener 600 and the second fastener 610 can be inserted from either end of the second mounting hole 2111 and locked together through threaded engagement. This eliminates the need for additional assembly holes and fasteners for assembly, reducing structural complexity and speeding up assembly and disassembly of the reducer 200, winding box 400, controller 300, and outer rotor motor 100.

[0059] Although the locking action of the second fastener 610 causes the first frame 211 and the second frame 212 to overlap, and the first shell 111 and the second shell 112 respectively formed on the sides of the first and second frames 211 and 212 are also fixed, the second fastener 610 also mounts the controller 300 to the second bracket 340. When the second fastener 610 is removed to remove the controller 300, the fit between the first frame 211 and the second frame 212 is released, and the first shell 111 and the second shell 112 are also separated. To prevent the first shell 111 and the second shell 112 from separating during the removal of the controller 300, a fifth mounting hole 1111 is provided in the first shell 111, and a sixth mounting hole 1121 is provided in the second shell 112. The third fastener 620 passes through the fifth mounting hole 1111 and is locked into the sixth mounting hole 1121 to secure the second shell 112 to the first shell 111. By providing the third fastener 620 , the fifth mounting hole 1111 , and the sixth mounting hole 1121 , the first housing 111 and the second housing 112 are locked, so that when the controller 300 is removed, the first housing 111 and the second housing 112 can remain in a mating state.

[0060] The third fastener 620 is a bolt, and the sixth mounting hole 1121 is a threaded hole. It is conceivable that the sixth mounting hole 1121 can also be a through hole, with the third fastener 620 passing through the sixth mounting hole 1121 and then engaging with the thread for locking. Of course, the fifth mounting hole 1111 can also be provided on the second housing 112, and the sixth mounting hole 1121 can be provided on the first housing 111.

[0061] Reference Figure 1 and Figure 8Based on the above embodiment, in one embodiment of the present invention, the winding box 400 is further provided with two guide wheels 430 and two sleeves 440. The two sleeves 440 correspond to the two guide wheels 430 respectively. The two ends of the pulling wire wound on the winding wheel 410 pass around one guide wheel 430 and then pass through the sleeve 440.

[0062] A cable is wound around the reel 410. As the reel 410 rotates, one end of the cable is pulled toward the reel 410, while the other end is released and moves away from the reel 410. The two ends of the cable are fixed to the slider on the side sliding door, thereby dragging the slider and the side sliding door. When the reel 410 rotates, the side sliding door moves in the opposite direction. The guide wheel 430 guides the cable, preventing friction between the cable and other internal components while being wound by the reel 410, which could damage or break the cable, or cause rupture of the winding box 400. The sleeve 440 protects the cable, preventing friction between the cable and other parts of the vehicle body.

[0063] The present invention also discloses an electric side sliding door for an automobile, comprising the drive assembly disclosed in the above embodiments. The electric side sliding door for an automobile has all the beneficial effects of the drive assembly in the above embodiments, which will not be described in detail here.

[0064] The electric sliding door for a vehicle includes a door body and a slider mounted on the door body. A slide rail is provided on the vehicle body corresponding to the slider and slidably engages with the slider. The door also includes the drive assembly disclosed in the above-mentioned solution, which is mounted on the vehicle body. The ends of a pull wire are connected to the two sides of the slider. The pull wire, driven by the rotation of a winding wheel, pulls the slider on the slide rail, causing the door body to slide and achieve automatic opening and closing.

[0065] The above are only specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Those skilled in the art should understand that the present invention includes but is not limited to the contents described in the drawings and the above specific embodiments. Any modifications that do not deviate from the functional and structural principles of the present invention are intended to be included within the scope of the claims.

Claims

1. A driving assembly for an electric side sliding door of an automobile, characterized in that: include: A winding box (400), wherein the winding box (400) is provided with a pull wire for dragging the sliding door body and a winding wheel (410) for winding the pull wire; An outer rotor motor (100) is used to provide torque to the winding wheel (410), the outer rotor motor (100) comprising an output shaft (140), the output shaft (140) being arranged in parallel with the winding wheel (410); a controller (300) electrically connected to the outer rotor motor (100) for controlling the operation of the outer rotor motor (100); A reducer (200) is used to transmit the torque of the outer rotor motor (100) to the winding wheel (410). The reducer (200) includes a first bracket (210) located between the outer rotor motor (100) and the winding wheel (410). The first bracket (210) is provided with a first gear (220) and a second gear (230) meshing with the first gear (220). The number of teeth of the first gear (220) is less than the number of teeth of the second gear (230). The first gear (220) is coaxially arranged with the output shaft (140), and the second gear (230) is coaxially arranged with the rotating shaft of the winding wheel (410). The controller (300) is detachably mounted on the first bracket (210) at a position on the side of the outer rotor motor (100).

2. The driving assembly of the electric sliding door of an automobile according to claim 1, characterized in that: The controller (300) comprises a circuit board (310) and an interface (320) electrically connected to the circuit board (310); the outer rotor motor (100) is a brushless motor; a portion of the circuit board (310) extends into the outer rotor motor (100) and remains relatively fixed to the outer rotor motor (100); and a Hall element (330) is provided on the portion of the circuit board (310) that extends into the outer rotor motor (100).

3. The driving assembly of the electric sliding door of an automobile according to claim 2, characterized in that: The outer rotor motor (100) further includes a housing (110), the housing (110) being fixed to the first bracket (210), an opening (150) being provided on a side of the housing (110), and the circuit board (310) extending into the housing (110) from the opening (150).

4. The driving assembly of the electric sliding door of an automobile according to claim 3, characterized in that: The outer rotor motor (100) is a three-phase motor. The housing (110) is provided with three openings (150) arranged at intervals. The circuit board (310) extends to form three sections of extension plates (350) spaced apart from each other. The three extension plates (350) respectively pass through one opening (150) and extend into the housing (110). Each extension plate (350) is provided with a Hall element (330).

5. The driving assembly of the electric sliding door of an automobile according to any one of claims 1 to 4, characterized in that: The first gear (220) and the second gear (230) are meshed with each other through helical teeth.

6. The driving assembly of an electric sliding door for an automobile according to any one of claims 1 to 4, characterized in that: The outer rotor motor (100) includes a housing (110), the controller (300) includes a second bracket (340), the housing (110) includes a first shell (111) and a second shell (112) covering the first shell (111), the first bracket (210) includes a first frame (211) and a second frame (212) connected to the first frame (211), the first frame (211) is integrally formed on the side of the first shell (111), the second frame (212) is integrally formed on the side of the second shell (112), the first frame (211) is fixed to the winding box (400), and the second bracket (340) is fixed to the second frame (212).

7. The driving assembly of the electric sliding door of an automobile according to claim 6, characterized in that: The winding box (400) is provided with a first mounting hole (420), the first frame (211) is provided with a second mounting hole (2111), the second mounting hole (2111) is a through hole, the second frame (212) is provided with a third mounting hole (2121), the second bracket (340) is provided with a fourth mounting hole (341), the first fastener (600) passes through the first mounting hole (420) and is locked into the second mounting hole (2111) so that the first frame (211) is fixed to the winding box (400), and the second fastener (610) passes through the fourth mounting hole (341) and the third mounting hole (2121) in sequence and is locked into the second mounting hole (2111) so that the second frame (212) is fixed to the first frame (211) and the second bracket (340) is fixed to the second frame (212).

8. The driving assembly of the electric sliding door of an automobile according to claim 7, characterized in that: One of the first shell (111) and the second shell (112) is provided with a fifth mounting hole (1111), and the other is provided with a sixth mounting hole (1121); a third fastener (620) passes through the fifth mounting hole (1111) and is locked into the sixth mounting hole (1121) so that the second shell (112) is fixed to the first shell (111); or, the third fastener (620) passes through the fifth mounting hole (1111) and the sixth mounting hole (1121) and is then locked by a thread so that the second shell (112) is fixed to the first shell (111).

9. The driving assembly of an electric sliding door for an automobile according to any one of claims 1 to 4, characterized in that: The winding box (400) is further provided with two guide wheels (430) and two sleeves (440), the two sleeves (440) corresponding to the two guide wheels (430) respectively, and the two ends of the pulling wire wound on the winding wheel (410) respectively pass around one guide wheel (430) and then pass through the sleeve (440).

10. An electric side sliding door for a car, comprising a door body and a slider provided on the door body, wherein a slide rail corresponding to the slider is provided on the car body and slidably cooperates with the slider, characterized in that: It also includes the drive assembly according to any one of claims 1 to 9, wherein the drive assembly is installed on the vehicle body, and the two ends of the pull wire are respectively connected to the two sides of the slider.

Images