A driving assembly of an electric sliding door of an automobile and an electric sliding door of an automobile

Abstract

The utility model discloses a kind of drive assembly of automobile electric side sliding door and automobile electric side sliding door, it is related to automobile parts field, drive assembly, comprising: winding box, winding box is equipped with for dragging side sliding door door body sliding pull wire and for winding pull wire winding reel;Driver, for providing torque to winding reel;Controller, with driver electricity is connected for controlling the operation of driver;Speed reducer, for transmitting the torque of driver to winding reel, speed reducer includes the first support between driver and winding reel, first support is equipped with torque input end and the torque output end being arranged in parallel with torque input end, torque input end is drivingly connected with driver, torque output end is drivingly connected with winding reel, the side portion of first support located driver forms assembly area for assembling controller.This utility model has the advantages of convenient disassembly and assembly.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, specifically to the drive assembly of an electric sliding door for automobiles and the electric sliding door itself. Background Technology

[0002] Some cars have sliding doors, which require sliding tracks installed below the door, on the roof, or in the middle of the vehicle. The doors themselves are often designed to be thicker and heavier to fit these tracks, requiring considerable force to open and close. For user convenience, some vehicles are equipped with power sliding doors.

[0003] Electric sliding doors include a drive system. Generally, the drive system moves the sliding door by retracting and extending a pull cable. The drive system needs to have sufficient force to move the sliding door and enable it to lock in place 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 for reducers.

[0004] The drive system also includes a motor controller, which is connected to the brushless motor via wires. Sheet metal parts need to be installed on the door or body near the motor to mount the motor controller, making the disassembly and assembly of the drive system inconvenient. Utility Model Content

[0005] This utility model aims to solve one of the technical problems in related technologies to a certain extent. To this end, this utility model provides a drive assembly for an electric sliding door of an automobile. Through structural optimization, space is reserved on the drive assembly for mounting a controller, so as to facilitate the disassembly and assembly of the drive assembly.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A drive assembly for an electric sliding door of an automobile includes: a winding box, on which a pull cable for dragging the sliding door body to slide and a winding wheel for winding the pull cable are provided; a driver for providing torque to the winding wheel; a controller electrically connected to the driver for controlling the operation of the driver; and a reducer for transmitting the torque of the driver to the winding wheel. The reducer includes a first bracket located between the driver and the winding wheel, the first bracket having a torque input end and a torque output end arranged parallel to the torque input end. The torque input end is drive-connected to the driver, and the torque output end is drive-connected to the winding wheel. An assembly area for assembling the controller is formed on the side of the first bracket located from the driver.

[0008] This utility model discloses a drive assembly for use in automobiles, used to control the automatic opening and closing of a sliding door. The drive assembly includes a driver, a reducer, a controller, and a winding box. The driver generates torque, and the reducer reduces the output speed of the driver, increases the output torque, and transmits the torque to the winding wheel in the winding box. The winding wheel rotates under the torque to wind and unwind the cable. During this process, the cable drags the sliding door, thus controlling its automatic opening and closing. The reducer is positioned between the winding wheel and the driver. The torque from the driver is input through the torque input terminal and transmitted to the reducer, then through the torque output terminal to the winding wheel. Because the torque input and output terminals are arranged side-by-side, a space is formed on the side of the reducer near the driver, serving as an assembly area for the controller. This provides ample space for the controller's installation, allowing for pre-installation in the assembly area during drive assembly installation, thus facilitating the disassembly and assembly of the entire drive assembly.

[0009] Optionally, the driver includes a stator, a rotor, and an output shaft, with the rotor positioned outside the stator. Sliding doors require automatic opening and closing. Generally, the force required to slide a sliding door is less than the force required to engage the door lock. Positioning the rotor outside the stator allows for a larger rotor diameter without changing the driver size, providing a longer electromagnetic lever arm. This allows for a greater torque output to the winding reel without changing the input power, ensuring the sliding door can withstand a larger force for stable automatic opening and closing.

[0010] Optionally, the torque input terminal includes a first gear, and the torque output terminal includes a second gear meshing with the first gear. The first gear has fewer teeth than the second gear. The first gear is coaxially arranged with the output shaft, and the second gear is coaxially arranged with the shaft of the winding reel. The rotational speed of the first gear is the same as the rotational speed of the output shaft, and the rotational speed of the second gear is the same as the rotational speed of the winding reel. The first gear meshes with the second gear, so the torque transmitted from the output shaft to the first gear can be 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 rotational speed is greater than that of the second gear, thereby increasing the torque transmitted from the second gear to the winding reel. Furthermore, because the rotor of the driver is located outside the stator, it has the characteristics of low speed and high torque. A single-stage reduction formed by the cooperation of the first and second gears can reduce the speed to the required value while simultaneously generating sufficiently strong torque. Compared to the planetary gear reducers used in the prior art, the present application uses a first gear and a second gear to form a single-stage reduction group. This reduces the number of gears and lowers the noise generated during gear meshing in the transmission process. At the same time, the reduced number of gears and the lower requirements for gear machining accuracy also reduce the processing and manufacturing costs.

[0011] Optionally, the controller includes a circuit board and an interface electrically connected to the circuit board. The driver is a brushless motor, comprising a stator and a rotor. A portion of the circuit board extends into the driver and remains relatively fixed to it. A Hall element is provided on the portion of the circuit board extending into the driver. Various electronic components can be mounted on the circuit board to control the motor. The interface enables signal interaction and power transmission with the circuit board. The Hall element on the portion of the circuit board extending into the driver 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 motor rotation. The Hall element remains relatively fixed to the circuit board and driver to prevent changes in the relative position of the Hall element and driver from affecting the Hall element's magnetic field sensing error and thus the motor's control accuracy. Furthermore, the assembly area formed on the first bracket has a large installation space, which can not only accommodate the controller but also provide sufficient space to arrange larger electronic components on the circuit board.

[0012] Optionally, the driver further includes a housing, within which the stator and rotor are disposed. An opening is provided on the side of the housing, through which the circuit board extends into the housing. Providing an opening on the side of the motor for the circuit board to extend into allows the Hall element to sense the rotor's magnetic field as the circuit board enters the housing, facilitating the assembly of the driver and controller.

[0013] Optionally, the brushless motor is a three-phase motor. The housing has three spaced-apart openings, and the circuit board extends into three spaced-apart extension plates. Each of the three extension plates passes through one of the openings and extends into the housing. Each extension plate has a Hall element. Three-phase brushless motors are widely used due to their excellent performance; correspondingly, three Hall elements are required, spaced apart from each other. The circuit board has a large width to allow the three Hall elements to be spaced apart. To avoid excessively large openings affecting the housing's strength, the housing has three openings corresponding to the three Hall elements, and the circuit board extends three extension plates to assemble the three Hall elements, each extending into the housing through one of the openings.

[0014] Optionally, the controller includes a second bracket, which is fixed to the assembly area. The circuit board is fixed to the second bracket, and the driver is fixed to the first bracket. The controller is fixed to the first bracket via the second bracket, maintaining relative stability with the first bracket. The circuit board is fixed to the second bracket, maintaining relative stability with the second bracket. The housing is fixed to the first bracket, thus maintaining relative stability with the second bracket. The relative positions of the circuit board and the driver remain fixed, allowing the Hall element, which is separately mounted from the driver, to accurately detect changes in the magnetic field, ensuring precise control of the motor. Because the controller and driver are fixed in position on the first bracket, their relative positions remain unchanged after installation. The controller can be disassembled and reinstalled, ensuring the Hall element returns to its original position after reinstallation. This design eliminates the need to fix the circuit board to the driver, ensuring their relative positions remain unchanged after assembly. The circuit board can be directly separated from the driver. Compared to existing technologies that fix the Hall element to the motor stator, this eliminates the need to replace the entire driver when the Hall element malfunctions, reducing subsequent maintenance costs.

[0015] Optionally, the driver is a brushless motor. The driver includes a housing, within which a stator and a rotor are housed. The controller includes a Hall plate, a circuit board, and an interface. The Hall plate is disposed within the housing and fixedly mounted on the stator. The housing has an opening. The interface is located in the assembly area and electrically connected to the Hall plate via a data cable passing through the opening. The assembly area has a cable holder fixed to the first bracket for securing the data cable. The Hall plate is fixedly mounted on the stator and relatively fixed to the stator, thereby fixing the position of the Hall element on the Hall plate on the driver and enabling precise detection of magnetic field changes, ensuring the control accuracy of the motor. The opening in the housing allows the data cable to extend and establish an electrical connection between the Hall plate and the circuit board, allowing the circuit board to collect data signals from the Hall plate for controlling the driver. The cable holder secures the data cable, making the data cable between the cable holder and the Hall plate more stable, thus preventing connection interruption and improving stability.

[0016] Optionally, the driver includes a housing, and the controller includes a second bracket. The housing includes a first shell and a second shell that covers 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, and 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 the driver can be assembled simultaneously during assembly. When assembling with the winding box, the first bracket can be fixed to the winding box first, then the components of the reducer and the driver can be assembled onto the first frame and the first shell, and then the second frame and the second shell can be closed to complete the simultaneous assembly of the driver and the reducer on the winding box. Furthermore, because the housings of the reducer and the driver are integrally formed, their components can better cooperate, resulting in higher transmission accuracy between them.

[0017] Furthermore, this utility model also discloses an electric sliding door for automobiles, including a door body and a slider disposed on the door body. A slide rail is provided on the vehicle body corresponding to the slider, and it also includes the drive assembly disclosed in the above-mentioned scheme. The drive assembly is mounted on the vehicle body, and the two ends of the pull cable are respectively connected to both sides of the slider. The electric sliding door for automobiles disclosed in this utility model possesses all the beneficial effects of the aforementioned drive assembly, which will not be elaborated further here.

[0018] These features and advantages of this utility model will be disclosed in detail in the following specific embodiments and accompanying drawings. The preferred embodiments or means of this utility model will be shown in detail in conjunction with the accompanying drawings, but are not intended to limit the technical solutions of this utility model. In addition, each of these features, elements and components appearing in the following text and drawings is multiple and is labeled with different symbols or numbers for convenience, but all represent parts with the same or similar structure or function. Attached Figure Description

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

[0020] Figure 1 This is a schematic diagram of the drive assembly in this utility model.

[0021] Figure 2 This is a schematic diagram of the drive assembly in this utility model when the driver is not installed.

[0022] Figure 3 This is a schematic diagram showing the interaction between the driver and the controller in this utility model.

[0023] Figure 4This is an exploded view A of the drive assembly in this utility model.

[0024] Figure 5 This is exploded view B of the drive assembly in this utility model.

[0025] Figure 6 This is an installation diagram of another drive assembly in this utility model.

[0026] Figure 7 This is a cross-sectional view of another drive assembly in this utility model.

[0027] Figure 8 This is a schematic diagram of the internal structure of the winding box in this utility model.

[0028] Figure label:

[0029] Driver 100, housing 110, first housing 111, fifth mounting hole 1111, second housing 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 board 350, Hall plate 360, data cable 370;

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

[0033] Assembly area 500, cable tray 510;

[0034] First fastener 600, second fastener 610, third fastener 620. Detailed Implementation

[0035] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described are intended to explain this utility model and should not be construed as limiting it.

[0036] The terms "an embodiment," "example," or "example" used in this specification refer to a particular feature, structure, or characteristic described in connection with the embodiment itself that may be included in at least one embodiment disclosed in this utility model. The phrase "in an embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment.

[0037] Reference Figures 1 to 5 , Figure 8 This utility model discloses a drive assembly for an electric sliding door of an automobile. The drive assembly is used to drive the sliding door to slide, thereby realizing the automatic opening and closing of the sliding door. The drive assembly includes a driver 100, a reducer 200, a controller 300, and a winding box 400. The driver 100 can output torque and provide it to the winding box 400. The reducer 200 can reduce the output speed of the driver 100, increase the output torque of the driver 100, and transmit the enhanced torque to the winding box 400. The winding box 400 is provided with a pull cable (not shown in the figure) for dragging the sliding door body to slide and a winding wheel 410 for winding the pull cable. The pull cable is wound on the winding wheel 410. The winding wheel 410 can rotate under the action of torque to wind and unwind the pull cable. During the winding and unwinding process, the pull cable can drag the sliding door to slide, thereby achieving the purpose of controlling the automatic opening and closing of the sliding door.

[0038] The reducer 200 includes a first bracket 210 located between the driver 100 and the winding reel 410. The first bracket 210 has a torque input terminal and a torque output terminal arranged parallel to the torque input terminal. The torque input terminal is drive-connected to the driver 100, and the torque output terminal is drive-connected to the winding reel 410. The reducer 200 is positioned between the winding reel 410 and the driver 100. The torque of the driver 100 is input through the torque input terminal and transmitted to the reducer 200, and then transmitted to the winding reel 410 through the torque output terminal. Because the torque input terminal and torque output terminal are arranged parallel, a space is provided on the side of the first bracket 210 of the reducer 200 near the driver 100, serving as an assembly area 500 for assembling the controller 300. The assembly area 500 has a large space, providing ample assembly space for the controller 300, facilitating its installation. The controller 300 can be pre-installed in the assembly area 500 during drive assembly installation, thus simplifying the disassembly and assembly of the entire drive assembly.

[0039] The driver 100 is a motor, including 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 out of the housing 110 to output torque. The rotor 130 can rotate relative to the stator 120 to drive the output shaft 140 to rotate. The output shaft 140 is connected to the torque input terminal. In this application, the rotor 130 is located outside the stator 120, which allows for an increase in the diameter of the rotor 130 without changing the size of the driver 100. This results in a longer electromagnetic arm, enabling the output of greater torque to the winding wheel 410 while maintaining the same input power. This ensures that the sliding door receives a larger force to stably achieve automatic opening and closing, preventing the sliding door from failing to lock due to insufficient force.

[0040] The driver 100 of this application is an external rotor motor, which has the characteristics of low speed and high torque. The torque input end includes a first gear 220, and the torque output end includes 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 mounted on the output shaft 140 and can rotate synchronously with the output shaft 140. The two can be connected by a flat key. The second gear 230 is mounted on the shaft of the winding wheel 410 and can drive the shaft to rotate synchronously with it. The second gear 230 and the shaft of the winding wheel 410 can be connected by a flat key, so that the reducer 200, the winding box 400, and the driver 100 can be separated for maintenance. The first gear 220 rotates at the same speed as the output shaft 140, and the second gear 230 rotates at the same speed as the winding wheel 410. The first gear 220 and the second gear 230 mesh, 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 to the winding wheel 410 via the second gear 230. Since the first gear 220 has fewer teeth than the second gear 230, the rotational speed of the first gear 220 is greater than that of the second gear 230, thereby increasing the torque transmitted from the second gear 230 to the winding wheel 410.

[0041] Since the speed of the driver 100 itself is not high, the speed can be reduced to the required value while generating sufficient torque by using only a single-stage reduction formed by the first gear 220 and the second gear 230. Compared with the planetary gear reducers used in the prior art, the use of the first gear 220 and the second gear 230 to form a single-stage reduction group in this application reduces the number of gears, thereby reducing the noise generated during gear meshing during transmission. At the same time, the reduction in the number of gears and the lower requirement for gear machining accuracy also reduce the manufacturing cost.

[0042] Compared to planetary gear reducers, the technical solution in this application simplifies the structure of the reducer 200 while ensuring torque, and the reducer 200 and the driver 100 can also be separated, solving the problem that the planetary gear is riveted together with the planet carrier and output shaft 140 and cannot be disassembled.

[0043] Furthermore, the reducer 200 and driver 100 can be customized by adjusting the number of teeth, module and displacement coefficient according to functional and size requirements, thereby expanding in the lateral direction and increasing space. In addition, the surface rib design can be optimized to increase the heat dissipation surface area, improve the heat dissipation efficiency of gear meshing and extend service life.

[0044] Reference Figure 4 Based on the above embodiments, in one embodiment of this utility model, the first gear 220 and the second gear 230 mesh with helical teeth. The first gear 220 and the second gear 230 make progressive contact when meshing, which has the characteristics of smooth transmission and strong load-bearing capacity. At the same time, it also has lower meshing noise, which can reduce the noise generated during the operation of the drive assembly. It can also stably drive the winding wheel 410 to control the stable sliding of the side sliding door.

[0045] Reference Figures 2 to 5 Based on the above embodiments, in one embodiment of this utility model, the controller 300 includes a circuit board 310 and an interface 320 electrically connected to the circuit board 310. The driver 100 is a brushless motor. A portion of the circuit board 310 extends into the brushless motor and remains relatively fixed to it. A Hall element 330 is provided on the portion of the circuit board 310 extending into the driver 100. Various electronic components can be mounted on the circuit board 310 to control the motor. The interface 320 can interact with the circuit board 310 for signal exchange and power transmission. The Hall element 330 is provided on the portion of the circuit board 310 extending into the driver 100 to detect the magnetic field of the rotor 130 to determine the real-time position of the rotor 130, providing a commutation signal to achieve orderly switching of the stator 120 winding current, ensuring continuous and stable motor rotation. The Hall element 330 is located on the side of the circuit board 310 facing the stator 120. Figure 3 As shown, Figure 3 The Hall element 330, depicted by the dotted line, is actually located below the circuit board 310, but is shown in dotted line form for ease of explanation.

[0046] The Hall element 330 is kept relatively fixed to the driver 100 along with the circuit board 310 to avoid changes in the relative position of the Hall element 330 and the driver 100, which would affect the Hall element 330's magnetic field sensing error and thus the control accuracy of the motor. In addition, the assembly area 500 formed on the first bracket 210 has a large installation space, which can not only accommodate the controller 300, but also has enough space to arrange 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. A circuit board 310 is fixed to the second bracket 340, and the driver 100 is fixed to the first bracket 210. The controller 300 is fixed to the first bracket 210 via the second bracket 340, ensuring relative fixation with the first bracket 210. The circuit board 310 is fixed to the second bracket 340, ensuring relative fixation with the second bracket 340. The housing 110 is fixed to the first bracket 210. Therefore, the entire driver 100 can remain relatively fixed with the second bracket 340. The relative positions of the circuit board 310 and the driver 100 remain fixed, allowing the Hall element 330, which is separately positioned from the driver 100, to accurately detect changes in the magnetic field, ensuring precise control of the motor.

[0048] Since the controller 300 and driver 100 are fixed in position on the first bracket 210, the relative position between the circuit board 310 and driver 100 remains unchanged after installation. The controller 300 can be disassembled and reinstalled, ensuring that the Hall element 330 can return to its original position after reinstallation.

[0049] Because the circuit board 310 can maintain a constant relative position with the driver 100, the position of the Hall element 330 within the driver 100 is fixed. This eliminates the need to fix the Hall element 330 to the stator 120 as is common in the prior art, making it easier to disassemble and assemble the controller 300. In addition, if the Hall element 330 is damaged, the controller 300 can be removed for repair without replacing the entire motor as is common in the prior art.

[0050] Reference Figures 2 to 5Based on the above embodiments, in another embodiment of this utility model, the side of the housing 110 is provided with an opening 150, and the circuit board 310 extends into the housing 110 through the opening 150. An opening 150 is also provided on the side of the motor to allow the circuit board 310 to extend in, so that the Hall element 330 can sense the magnetic field of the rotor 130 as the circuit board 310 enters the housing 110. By assembling the controller 300 and the driver 100 by providing the opening 150, the controller 300 only needs to insert the circuit board 310 into the driver 100 to control the motor. No additional assembly or design of additional assembly structures is required between the two, which facilitates the assembly of the controller 300.

[0051] The driver 100 is a three-phase motor. Three-phase brushless motors are widely used due to their excellent performance. Correspondingly, three Hall elements 330 are required, and they need to be spaced apart from each other. There are generally two mainstream arrangement methods: one is to space them apart at 120°, and the other is to space them apart at 60°. In this application, the three Hall elements 330 are arranged with a 60° interval between them. In order to avoid the opening 150 being too large and affecting the strength of the housing 110, the housing 110 is provided with three openings 150 corresponding to the three Hall elements 330. Three extension plates 350 extend from the circuit board 310 to assemble the three Hall elements 330 respectively, and each extends into the housing 110 through one of the openings 150.

[0052] Reference Figure 6 and Figure 7 Unlike the above embodiments, in another embodiment of this utility model, the controller 300 includes a Hall plate 360, a circuit board 310, and an interface 320. The Hall plate 360 ​​is disposed inside the housing 110 and fixedly mounted on the stator 120, and is fixed relative to the stator 120. This fixes the position of the Hall element 330 on the Hall plate 360 ​​on the driver 100, enabling precise detection of magnetic field changes and ensuring the control accuracy of the motor. The housing 110 has an opening 150, and the interface 320 is located in the assembly area 500 and passes through... The data cable 370 passes through the opening 150 and is electrically connected to the Hall plate 360, enabling the circuit board 310 to collect data signals from the Hall plate 360 ​​to control the driver 100. The assembly area 500 is provided with a cable holder 510 fixed on the first bracket 210 for fixing the data cable 370. The cable holder 510 can fix the data cable 370, making the data cable 370 between the cable holder 510 and the Hall plate 360 ​​more stable, thereby avoiding the interruption of the connection between the data cable 370 and the Hall plate 360 ​​and improving stability.

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

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

[0055] Because the first frame 211 and the first housing 111 are integrally formed, and the second frame 212 and the second housing 112 are integrally formed, the reducer 200 and the driver 100 can be assembled simultaneously during the assembly process. When assembling with the winding box 400, the first bracket 210 can be fixed to the winding box 400 first, and then the components of the reducer 200 and the driver 100 can be assembled onto 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 driver 100 and the reducer 200 on the winding box 400.

[0056] Meanwhile, because the housings of the reducer 200 and the driver 100 are integrally molded, their components can fit together better, resulting in higher transmission accuracy between them.

[0057] Specifically, 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 frame 212 is provided with a third mounting hole 2121, and the second bracket 340 is provided with a fourth mounting hole 341. 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 the second mounting hole 2111 is provided with an internal thread.

[0058] The first fastener 600 passes through the first mounting hole 420 and locks into the second mounting hole 2111 to fix the first frame 211 onto the winding box 400. The second fastener 610 passes through the fourth mounting hole 341 and the third mounting hole 2121 in sequence and locks into the second mounting hole 2111 to fix the second frame 212 onto the first frame 211 and the second bracket 340 onto 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, capable of threaded engagement with the second mounting hole 2111. This allows the first fastener 600 and the second fastener 610 to be inserted from both ends of the second mounting hole 2111 and locked through the threaded engagement. This eliminates the need for additional assembly holes and fasteners, reducing structural complexity and improving the assembly and disassembly speed of the reducer 200, winding box 400, controller 300, and driver 100.

[0059] Although the second fastener 610 locks the first frame 211 and the second frame 212 together, and also fixes the first housing 111 and the second housing 112 formed on their sides, the second fastener 610 also mounts the controller 300 onto the second bracket 340. When the controller 300 needs to be removed and the second fastener 610 is disassembled, the fit between the first frame 211 and the second frame 212 will be released, and the first housing 111 and the second housing 112 will also be separated. To prevent the first housing 111 and the second housing 112 from separating during the disassembly of the controller 300, the first housing 111 is provided with a fifth mounting hole 1111, and the second housing 112 is provided with a sixth mounting hole 1121. The third fastener 620 passes through the fifth mounting hole 1111 and locks into the sixth mounting hole 1121 to fix the second housing 112 onto the first housing 111. By setting the third fastener 620, the fifth mounting hole 1111 and the sixth mounting hole 1121, the first housing 111 and the second housing 112 can be locked, so that the first housing 111 and the second housing 112 can remain in a mating state when the controller 300 is removed.

[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 could also be a through hole, with the third fastener 620 passing through it and engaging with the threaded connection for locking. Alternatively, the fifth mounting hole 1111 could be located on the second housing 112, and the sixth mounting hole 1121 could be located on the first housing 111.

[0061] Reference Figure 1 and Figure 8Based on the above embodiments, 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 pull wire wound on the winding wheel 410 pass through a guide wheel 430 and then through the sleeve 440.

[0062] A pull cable is wound around the winding wheel 410. When the winding wheel 410 rotates, one end of the pull cable is pulled towards the winding wheel 410, while the other end is released and moves away from the winding wheel 410. The two ends of the pull cable are fixed to the sides of the slider on the side sliding door, so that the slider can be dragged to move the side sliding door. When the winding wheel 410 reverses, the side sliding door moves in the opposite direction. The guide wheel 430 guides the pull cable to prevent friction between the pull cable and other internal components during the winding process of the winding wheel 410, which could cause damage or breakage of the pull cable or breakage of the winding box 400. The sleeve 440 protects the pull cable to prevent friction damage between the pull cable and other structures on the vehicle body.

[0063] This utility model also discloses an electric sliding door for automobiles, including the drive assembly disclosed in the above embodiments. The electric sliding door for automobiles has all the beneficial effects of the drive assembly in the above embodiments, which will not be repeated here.

[0064] The electric sliding door for automobiles 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 the door also includes the drive assembly disclosed in the above-mentioned solution. The drive assembly is mounted on the vehicle body, and the two ends of a pull cable are connected to the two sides of the slider. The pull cable, under the rotation of a winding wheel, pulls the slider to slide on the slide rail, causing the door body to slide and achieve automatic opening and closing.

[0065] The above are merely specific embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Those skilled in the art should understand that this utility model includes, but is not limited to, the contents described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of this utility model will be included within the scope of the claims.

Claims

1. A drive assembly for an electric sliding door of an automobile, characterized in that, include: A 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. A driver (100) is used to provide torque to the winding reel (410); A controller (300), electrically connected to the driver (100), is used to control the operation of the driver (100); A speed reducer (200) is used to transmit the torque of the driver (100) to the winding wheel (410). The speed reducer (200) includes a first bracket (210) located between the driver (100) and the winding wheel (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 drivenly connected to the driver (100), and the torque output end is drivenly connected to the winding wheel (410). An assembly area (500) for assembling the controller (300) is formed on the side of the first bracket (210) located on the driver (100).

2. The drive assembly for an electric sliding door of an automobile according to claim 1, characterized in that, The driver (100) includes a stator (120), a rotor (130) and an output shaft (140), with the rotor (130) disposed outside the stator (120).

3. The drive assembly for an electric sliding door of an automobile according to claim 2, characterized in that, The torque input end includes a first gear (220), and the torque output end includes 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 shaft of the winding wheel (410).

4. The drive assembly for an electric sliding door of an automobile according to claim 1, characterized in that, The controller (300) includes a circuit board (310) and an interface (320) electrically connected to the circuit board (310). The driver (100) is a brushless motor, which includes a stator (120) and a rotor (130). A portion of the circuit board (310) extends into the brushless motor and remains relatively fixed to the brushless motor. A Hall element (330) is provided on the portion of the circuit board (310) that extends into the brushless motor.

5. The drive assembly for an electric sliding door of an automobile according to claim 4, characterized in that, The brushless motor also includes a housing (110), the stator (120) and the rotor (130) are disposed inside the housing (110), the side of the housing (110) is provided with an opening (150), and the circuit board (310) extends into the housing (110) through the opening (150).

6. The drive assembly for an electric sliding door of an automobile according to claim 5, characterized in that, The brushless motor is a three-phase motor. The housing (110) is provided with three spaced openings (150). The circuit board (310) extends to form three spaced extension plates (350). The three extension plates (350) pass through one opening (150) and extend into the housing (110). Each extension plate (350) is provided with a Hall element (330).

7. The drive assembly for an electric sliding door of an automobile according to claim 4, characterized in that, The controller (300) includes a second bracket (340) fixed to the assembly area (500), the circuit board (310) fixed to the second bracket (340), and the brushless motor fixed to the first bracket (210).

8. The drive assembly for an electric sliding door of an automobile according to claim 1, characterized in that, The driver (100) is a brushless motor, which includes a housing (110). The housing (110) contains a stator (120) and a rotor (130). The controller (300) includes a Hall plate (360), a circuit board (310), and an interface (320). The Hall plate (360) is located inside the housing (110) and fixedly mounted on the stator (120). The housing (110) has an opening (150). The interface (320) is located in the assembly area (500) and is electrically connected to the Hall plate (360) through a data cable (370) passing through the opening (150). The assembly area (500) has a cable holder (510) fixed on the first bracket (210) for fixing the data cable (370).

9. The drive assembly for an electric sliding door of an automobile according to any one of claims 1 to 8, characterized in that, The driver (100) includes a housing (110), and the controller (300) includes a second bracket (340). 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) that connects to the first frame (211). The first frame (211) is integrally formed on the side of the first housing (111), and the second frame (212) is integrally formed on 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 on the second frame (212).

10. An electric sliding door for automobiles, comprising a door body and a slider disposed on the door body, wherein a slide rail is provided on the vehicle body corresponding to the slider and slidingly engaging with the slider, characterized in that, It also includes the drive assembly according to any one of claims 1 to 9, the drive assembly being mounted on the vehicle body, and the two ends of the pull cable being respectively connected to the two sides of the slider.

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