A drive device built in an electric door

Abstract

This application discloses a drive device built into an electric door, comprising: a drive assembly, a steering wheel assembly, a guide wheel assembly, an opening cable, a closing cable, and a door guide rail; one end of the opening and closing cables is connected to the drive assembly; the other end of the opening and closing cables is connected to the guide wheel assembly via the steering wheel assembly; one end of the opening cable passing through the guide wheel assembly is connected to an opening mounting end, and one end of the closing cable passing through the guide wheel assembly is connected to a closing mounting end; the door guide rail is fixedly connected to the vehicle body, with the opening mounting end located at one end of the door guide rail and the closing mounting end located at the other end. Using this method, both the opening and closing cables are fixed and there is no relative movement between them and the door guide rail, thus preventing wear on the guide rail. Furthermore, no openings are needed on the side of the vehicle body, providing better protection. Additionally, the drive assembly is installed inside the door, making maintenance and installation more convenient compared to existing methods where the drive assembly is installed within the vehicle body.

Description

Technical Field

[0001] This utility model relates to the field of electric vehicle door drive technology, and in particular to a drive device built into an electric door. Background Technology

[0002] Car sliding door systems offer many advantages over traditional hinged revolving doors due to their unique opening mechanism, such as easier parking, better entry and exit, and convenient loading and unloading of goods. Electric car sliding doors integrate electric opening, closing, and anti-pinch functions on the basis of sliding doors, and with their intelligence and automation, they have become a highlight of mid-to-high-end luxury MPVs, gaining increasing favor from customers.

[0003] Traditional electric sliding door drive mechanisms are located on the side of the vehicle body, with the opening and closing cables extending outside the vehicle from the end of the guide rail and the front of the middle guide rail (C-pillar) respectively, connecting to the central hinge. This method has many problems:

[0004] (1) Because openings are required at both the C-pillar and the end of the guide rail, the protection is not high;

[0005] (2) When the door closing cable is running, it comes into contact with the guide rail, which can easily cause the guide rail to be scratched and the paint to peel off over a long period of time.

[0006] Therefore, there is an urgent need to design a drive device built into an electric door to solve one or more technical problems that are lacking in the existing technology. Utility Model Content

[0007] The technical solution adopted by this utility model to solve the above-mentioned technical problems is: a drive device built into an electric door, characterized in that it includes: a drive assembly, a steering wheel assembly, a guide wheel assembly, an opening cable, a closing cable, and a door guide rail; one end of the opening cable and the closing cable are respectively connected to the drive assembly, and the drive assembly controls the opening and closing cables to retract or extend, and the opening and closing cables move in opposite directions; the other end of the opening and closing cables are connected to the guide wheel assembly through the steering wheel assembly, and they cross each other. The guide wheel assembly is provided, and the steering wheel assembly is used to change the movement direction of the door opening cable and the door closing cable. One end of the door opening cable passing through the guide wheel assembly is connected to an door opening mounting end, and the door opening cable is fixedly connected to the vehicle body through the door opening mounting end. One end of the door closing cable passing through the guide wheel assembly is connected to a door closing mounting end, and the door closing cable is fixedly connected to the vehicle body through the door closing mounting end. The door guide rail is fixedly connected to the vehicle body, the door opening mounting end is located at one end of the door guide rail, and the door closing mounting end is located at the other end of the door guide rail.

[0008] In a preferred embodiment, the steering wheel assembly includes: a housing, within which a first steering wheel and a second steering wheel are rotatably disposed, the first and second steering wheels being coaxially arranged and rotatable relative to each other, and both the first and second steering wheels having grooves; the door opening cable passes through one end of the housing, wraps around the first steering wheel at an angle through the groove, and exits through the other end of the housing into the guide wheel assembly; the door closing cable passes through one end of the housing, wraps around the second steering wheel at an angle through the groove, and exits through the other end of the housing into the guide wheel assembly.

[0009] In a preferred embodiment, the guide wheel assembly includes an upper cover plate, a middle cover plate, and a lower cover plate, arranged sequentially from top to bottom. A first guide wheel is rotatably mounted at one end of the lower cover plate, and a second and a third guide wheel are rotatably mounted at the other end of the lower cover plate. The second and third guide wheels are coaxially arranged and can rotate relative to each other. The first guide wheel has two grooves, and each of the second and third guide wheels has one groove. The door opening cable extends from one end of the steering wheel assembly, passes through the end of the lower cover plate where the second guide wheel is located, and wraps around the second and first guide wheels via the grooves. The door closing cable extends from one end of the steering wheel assembly, passes through the end of the lower cover plate where the third guide wheel is located, and wraps around the third and first guide wheels via the grooves.

[0010] In a preferred embodiment, the middle cover separates the door opening cable and the door closing cable vertically.

[0011] In a preferred embodiment, the middle cover plate is located between the first guide wheel, the second guide wheel, and the third guide wheel, and guide wheel limiting blocks are respectively provided at both ends of the middle cover plate, and the guide wheel limiting blocks are inserted into the corresponding grooves.

[0012] In a preferred embodiment, the groove depths of the second guide wheel and the third guide wheel are not equal.

[0013] In a preferred embodiment, the groove depths of the first steering wheel and the second steering wheel are not equal.

[0014] In a preferred embodiment, both the door opening mounting end and the door closing mounting end are provided with a housing, and each housing is provided with a tension spring. The door opening pull cable and the door closing pull cable are respectively connected to the corresponding tension spring.

[0015] In a preferred embodiment, both the middle cover plate and the lower cover plate are provided with wiring grooves, the door opening pull cable is located in the wiring groove of the middle cover plate, and the door closing pull cable is located in the wiring groove of the lower cover plate.

[0016] In a preferred embodiment, the portions of the door opening cable and the door closing cable located between the drive assembly and the steering wheel assembly are provided with sleeves.

[0017] The advantages of this utility model are: the door opening cable and the door closing cable are fixed and there is no relative movement between them and the door guide rail, so they will not cause wear to the guide rail. In addition, no holes are needed in the side panel of the vehicle body, which provides better protection. At the same time, the drive assembly is installed inside the door, which makes maintenance and installation more convenient than the existing technology that is installed inside the vehicle body. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is an exploded view of the steering wheel assembly of this utility model;

[0020] Figure 3 This is an exploded view of the side guide wheel assembly of this utility model;

[0021] Figure 4 This is a schematic diagram of the cover plate in this utility model;

[0022] Figure 5 This is a cross-sectional view of the door opening and mounting end of this utility model;

[0023] Figure 6 This is a schematic diagram of the movement of the door opening and closing cable of this utility model.

[0024] In the picture:

[0025] 10. Drive assembly; 11. Pipe sleeve;

[0026] 20. Steering wheel assembly; 21. Housing; 22. First steering wheel; 23. Second steering wheel; 24. Cable tray;

[0027] 30. Guide wheel assembly; 31. Upper cover plate; 32. Middle cover plate; 33. Lower cover plate; 34. First guide wheel; 35. Second guide wheel; 36. Third guide wheel; 37. Cable routing groove; 38. Limiting block;

[0028] 40. Door opening cable; 41. Door closing cable; 42. Door guide rail; 43. Door opening mounting end; 44. Door closing mounting end; 45. Housing; 46. Tension spring. Detailed Implementation

[0029] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0030] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection" and "installation" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. Furthermore, "connection" can be a direct connection or an indirect connection through an intermediate medium. "Fixed" means that the relative positional relationship remains unchanged after the connection. The directional terms mentioned in the embodiments of this utility model, such as "inner," "outer," "top," and "bottom," are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of this utility model, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0031] In this embodiment of the invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature.

[0032] In this embodiment of the utility model, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0033] References to "one embodiment" or "some embodiments" as used in this specification mean that one or more embodiments of the present invention include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0034] like Figures 1-6 As shown, this utility model provides a drive device built into an electric door, characterized in that it includes: a drive assembly 10, a steering wheel assembly 20, a guide wheel assembly 30, an opening cable 40, a closing cable 41, and a door guide rail 42; one end of the opening cable 40 and the closing cable 41 are respectively connected to the drive assembly 10, and the drive assembly 10 controls the opening and closing of the opening cable 40 and the closing cable 41, and the opening cable 40 and the closing cable 41 move in opposite directions; the other end of the opening cable 40 and the closing cable 41 are connected to the guide wheel assembly 30 through the steering wheel assembly 20, and pass through the guide wheel assembly in a crisscross pattern. 30. The steering wheel assembly 20 is used to change the movement direction of the door opening cable 40 and the door closing cable 41. One end of the door opening cable 40 that passes through the guide wheel assembly 30 is connected to the door opening mounting end 43. The door opening cable 40 is fixedly connected to the vehicle body through the door opening mounting end 43. One end of the door closing cable 41 that passes through the guide wheel assembly 30 is connected to the door closing mounting end 44. The door closing cable 41 is fixedly connected to the vehicle body through the door closing mounting end 44. The door guide rail 42 is fixedly connected to the vehicle body. The door opening mounting end 43 is located at one end of the door guide rail 42, and the door closing mounting end 44 is located at the other end of the door guide rail 42.

[0035] Specifically, the drive assembly 10 and the steering wheel assembly 20 are located inside the door, while the guide wheel assembly 30 and the door guide rail 42 are located on the vehicle body. One end of the door opening cable 40 and the door closing cable 41 are both inserted into the drive assembly 10 and are retracted or released under the control of the drive assembly 10. The drive assembly 10 can adopt existing conventional technology, so its specific structure will not be described in detail here. When the door opening cable 40 and the door closing cable 41 are controlled by the drive assembly 10, their movements are opposite, that is, when the door opening cable 40 retracts, the door closing cable 41 is released, and vice versa. Similarly, the other ends of the door opening cable 40 and the door closing cable 41 pass through one end of the steering wheel assembly 20, where the steering wheel assembly 20 converts the original vertical movement of the door opening cable 40 and the door closing cable 41 into horizontal movement. They then exit from the other end of the steering wheel assembly 20 and enter from one end of the guide wheel assembly 30. Since the opening and closing movements are opposite, the door opening cable 40 and the door closing cable 41 cross each other when they exit from the other end of the guide wheel assembly 30. The end of the door opening cable 40 that exits the guide wheel assembly 30 is connected to an opening mounting end 43. The closing cable 41 extends out of the guide wheel assembly 30 and connects to the closing mounting end 44. Both the opening mounting end 43 and the closing mounting end 44 are fixedly mounted on the vehicle body and located at both ends of the door guide rail 42. When the door is opened, the drive assembly 10 rotates forward, winding the opening cable 40 via its internal winding wheel, and simultaneously releasing the closing cable 41. During the winding process, since the end of the opening cable 40 furthest from the drive assembly 10 is fixed to the vehicle body and does not move, a traction force is generated during the winding process. This traction force is transmitted to the drive assembly 10. The drive assembly 10 acts on the door, thereby pulling the door open; when closing the door, the drive assembly 10 reverses, retracting the closing cable 41 and releasing the opening cable 40, and so on, to close the door. In this way, the opening cable 40 and the closing cable 41 are fixed and there is no relative movement between them and the door guide rail 42, so there will be no wear on the door guide rail 42. In addition, no holes are needed in the side of the vehicle body, which provides better protection. At the same time, the drive assembly 10 is installed inside the door, which makes maintenance and installation more convenient than the existing technology of setting it inside the vehicle body.

[0036] Furthermore, the steering wheel assembly 20 includes: a housing 21, within which a first steering wheel 22 and a second steering wheel 23 are rotatably disposed, the first steering wheel 22 and the second steering wheel 23 being coaxially arranged and rotatable relative to each other, and both the first steering wheel 22 and the second steering wheel 23 having a groove 24; the door opening cable 40 passes through one end of the housing 21, wraps around the first steering wheel 22 at an angle through the groove 24, and exits through the other end of the housing 21 into the guide wheel assembly 30; the door closing cable 41 passes through one end of the housing 21, wraps around the second steering wheel 23 at an angle through the groove 24, and exits through the other end of the housing 21 into the guide wheel assembly 30;

[0037] Specifically, the steering wheel assembly 20 includes: a housing 21, which is fixedly connected to the door; a first steering wheel 22 and a second steering wheel 23 are rotatably disposed within the housing 21, and the first steering wheel 22 and the second steering wheel 23 are coaxially arranged and can rotate relative to each other; each of the first steering wheel 22 and the second steering wheel 23 has a wire groove 24 for the door opening cable 40 and the door closing cable 41 to cooperate with the first steering wheel 22 and the second steering wheel 23; the door opening cable 40 passes through one end of the housing 21 and is located in the wire groove 24 of the first steering wheel 22 at a 90° angle. The door opening cable 40 is wound around the first steering wheel 22 at a 90° angle, thus changing the door closing cable 40 from vertical to horizontal. The door closing cable 41 is located in the groove 24 of the second steering wheel 23 and is wound around the second steering wheel 23 at a 90° angle, thus changing the door closing cable 41 from vertical to horizontal. The groove 24 effectively prevents the door opening cable 40 and the door closing cable 41 from contacting each other and avoiding mutual interference. The rotation of the first steering wheel 22 and the second steering wheel 23 can reduce the friction between the door opening cable 40 and the door closing cable 41 and the steering wheel.

[0038] Furthermore, the groove 24 depths of the first steering wheel 22 and the second steering wheel 23 are not equal;

[0039] Specifically, the groove 24 of the first steering wheel 22 and the second steering wheel 23 has different depths, which can force the door opening cable 40 and the door closing cable 41 to not be projected in the same direction, thereby preventing the door opening cable 40 and the door closing cable 41 from interfering with each other after disengaging from the first steering wheel 22 and the second steering wheel 23. In this embodiment, since the force required to open the door is greater than the force required to close the door, it is preferable that the groove 24 of the first steering wheel 22 has a greater depth than the groove 24 of the second steering wheel 23, so that the door opening cable 40 has a larger contact area and friction with the first steering wheel 22, ensuring smooth door opening. Since the force required to close the door is smaller, a shallower groove depth can be set to reduce friction and contact area.

[0040] Furthermore, the guide wheel assembly 30 includes: an upper cover plate 31, a middle cover plate 32, and a lower cover plate 33, which are arranged sequentially from top to bottom. A first guide wheel 34 is rotatably mounted on one end of the lower cover plate 33, and a second guide wheel 35 and a third guide wheel 36 are rotatably mounted on the other end of the lower cover plate 33. The second guide wheel 35 and the third guide wheel 36 are coaxially arranged and can rotate relative to each other. The first guide wheel 34 has two grooves 24. The second guide wheel... Both the 35 and the third guide wheel 36 are provided with a wire groove 24. The door opening pull cable 40 passes through one end of the steering wheel assembly 20, enters from the end of the lower cover plate 33 where the second guide wheel 35 is located, and is wound around the second guide wheel 35 and the first guide wheel 34 through the wire groove 24. The door closing pull cable 41 passes through one end of the steering wheel assembly 20, enters from the end of the lower cover plate 33 where the third guide wheel 36 is located, and is wound around the third guide wheel 36 and the first guide wheel 34 through the wire groove 24.

[0041] Specifically, the guide wheel assembly 30 includes an upper cover plate 31, a middle cover plate 32, and a lower cover plate 33, which are arranged sequentially from top to bottom. The middle cover plate 32 is located inside the upper cover plate 31 and the lower cover plate 33. A first guide wheel 34 is provided at one end of the lower cover plate 33, and a second guide wheel 35 and a third guide wheel 36 are provided at the other end. The second guide wheel 35 and the third guide wheel 36 are coaxially arranged and can rotate relative to each other. The first guide wheel 34 is arranged in a top-to-bottom configuration. Two grooves 24 are provided, one in each of the second guide wheel 35 and the other in the third guide wheel 36. The groove 24 above the first guide wheel 34 is on the same horizontal plane as the groove 24 of the second guide wheel 35, and the groove 24 below the first guide wheel 34 is on the same horizontal plane as the groove 24 of the third guide wheel 36. The door opening cable 40 passes through the groove 24 of the second guide wheel 35 from the end where the second guide wheel 35 is located, and is wound around the second guide wheel 35 at an angle. The door opening cable 40 and door closing cable 41 are then wrapped around the first guide wheel 34 at an angle and then exit from the first direction. The door closing cable 41 enters from the end with the third guide wheel 36 and is located in the groove 24 of the third guide wheel 36, and is wrapped around the third guide wheel 36 at an angle. Then it is wrapped around the first guide wheel 34 at an angle and then exits from the second direction. The first and second directions are opposite, so that the door opening cable 40 and door closing cable 41 are crossed. When the door is opened, the door opening cable 40 will drive the first guide wheel 34 to rotate due to the traction force. The rotation of the first guide wheel 34 will release the door closing cable 41 synchronously to ensure the consistency of rotation. The reverse is also true, so as to ensure that the other cable will not rub against the first guide wheel 34 when the door is opened or closed. Moreover, through the cooperation of the first guide wheel 34 and the second guide wheel 35 with the third guide wheel 36 and the first steering wheel 22 and the second steering wheel 23, the misalignment of the cable during the transmission process can be effectively reduced, and the stability of rotation can be increased.

[0042] Furthermore, the groove 24 depths of the second guide wheel 35 and the third guide wheel 36 are not equal;

[0043] Specifically, the groove 24 of the second guide wheel 35 and the third guide wheel 36 has a different depth, which is the same as the groove depth of the first steering wheel 22 and the second steering wheel 23. This avoids interference and also increases the contact area and friction between the door opening cable 40 and the second guide wheel 35, ensuring that the door can be opened smoothly.

[0044] Furthermore, the middle cover plate 32 separates the door opening cable 40 and the door closing cable 41 vertically;

[0045] Furthermore, both the middle cover plate 32 and the lower cover plate 33 are provided with wiring grooves 37. The door opening pull cable 40 is located in the wiring groove 37 of the middle cover plate 32, and the door closing pull cable 41 is located in the wiring groove 37 of the lower cover plate 33.

[0046] Specifically, to avoid interference between the opening cable 40 and the closing cable 41 located within the guide wheel assembly 30, the opening cable 40 and the closing cable 41 are separated by the middle cover plate 32. This ensures that even in the event of a malfunction, such as breakage, the opening cable 40 and the closing cable 41 will not interfere with each other and cause secondary damage. Furthermore, by providing cable routing grooves 37 on both the middle cover plate 32 and the lower cover plate 33, the opening cable 40 and the closing cable 41 are located within the corresponding cable routing grooves 37, thus limiting the range of motion of the opening cable 40 and the closing cable 41.

[0047] Furthermore, the middle cover plate 32 is located between the first guide wheel 34, the second guide wheel 35 and the third guide wheel 36, and guide wheel limiting blocks 38 are respectively provided at both ends of the middle cover plate 32, and the guide wheel limiting blocks 38 are inserted into the corresponding wire grooves 24;

[0048] Specifically, to prevent the first guide wheel 34, the second guide wheel 35, and the third guide wheel 36 from moving axially, limiting blocks 38 are provided at both ends of the middle cover plate 32 and inserted into the grooves 24 of the first guide wheel 34, the second guide wheel 35, and the third guide wheel 36. By limiting the first guide wheel 34, the second guide wheel 35, and the third guide wheel 36, the axial transmission during rotation is reduced and the stability is improved.

[0049] Furthermore, both the door opening mounting end 43 and the door closing mounting end 44 are provided with a housing 45, and each housing 45 is provided with a tension spring 46. The door opening pull cable 40 and the door closing pull cable 41 are respectively connected to the corresponding tension spring 46.

[0050] Specifically, both the door opening mounting end 43 and the door closing mounting end 44 are provided with a housing 45, and each housing 45 is provided with a tension spring 46. The door opening pull cable 40 and the door closing pull cable 41 are respectively connected to the corresponding tension spring 46. When the door is opened, the tension spring 46 connected to the door opening pull cable 40 is compressed, while the door closing pull cable 41 is in the process of releasing. Therefore, when the length of the door closing pull cable 41 becomes redundant during the release process, the tension spring 46 will tighten the door closing pull cable 41 in time. The same applies to the door opening pull cable 40, thereby avoiding the problem of the pull cable not returning smoothly and causing tangling and skipping.

[0051] Furthermore, the portion of the door opening cable 40 and the door closing cable 41 located between the drive assembly 10 and the steering wheel assembly 20 is provided with a sleeve 11;

[0052] Specifically, the opening cable 40 and closing cable 41 are provided with sleeves 11 in the part between the drive assembly 10 and the steering wheel assembly 20. The sleeves 11 protect the cables and prevent them from contacting and rubbing against the internal structure of the door.

[0053] In summary, both the door opening cable 40 and the door closing cable 41 are fixed and there is no relative movement between them and the door guide rail 42. Therefore, they will not cause wear to the guide rail. Furthermore, no holes are needed in the side panel of the vehicle body, resulting in better protection. At the same time, the drive assembly 10 is installed inside the door, making maintenance and installation more convenient compared to the existing technology where it is installed inside the vehicle body.

[0054] This invention is not limited to the description in the specification and embodiments. Therefore, other advantages and modifications can be readily realized by those skilled in the art. Thus, without departing from the spirit and scope of the general concept as defined by the claims and their equivalents, this invention is not limited to the specific details, representative devices and illustrated examples shown and described herein.

Claims

1. A drive device built into an electric gate, characterized in that, include: The system includes a drive assembly, a steering wheel assembly, a guide wheel assembly, an opening door cable, a closing door cable, and a door guide rail. One end of each of the opening and closing door cables is connected to the drive assembly, which controls the extension and retraction of the cables. The opening and closing cables move in opposite directions. The other ends of the opening and closing door cables are connected to the guide wheel assembly via the steering wheel assembly and pass through it in a crisscross pattern. The steering wheel assembly is used to change the door opening direction. The opening and closing cables are defined as follows: one end of the opening cable passes through the guide wheel assembly and is connected to an opening mounting end; the opening cable is fixedly connected to the vehicle body via the opening mounting end. The closing cable passes through the guide wheel assembly and is connected to a closing mounting end; the closing cable is fixedly connected to the vehicle body via the closing mounting end. The door guide rail is fixedly connected to the vehicle body; the opening mounting end is located at one end of the door guide rail, and the closing mounting end is located at the other end of the door guide rail.

2. The drive device built into the electric door according to claim 1, characterized in that, The steering wheel assembly includes: a housing, within which a first steering wheel and a second steering wheel are rotatably disposed, the first and second steering wheels being coaxially arranged and rotatable relative to each other, and both the first and second steering wheels having grooves; the door opening cable passes through one end of the housing, wraps around the first steering wheel at an angle through the groove, and exits through the other end of the housing into the guide wheel assembly; the door closing cable passes through one end of the housing, wraps around the second steering wheel at an angle through the groove, and exits through the other end of the housing into the guide wheel assembly.

3. The drive device built into the electric door according to claim 1, characterized in that, The guide wheel assembly includes an upper cover plate, a middle cover plate, and a lower cover plate, arranged sequentially from top to bottom. A first guide wheel is rotatably mounted at one end of the lower cover plate, and a second and a third guide wheel are rotatably mounted at the other end of the lower cover plate. The second and third guide wheels are coaxially arranged and can rotate relative to each other. The first guide wheel has two grooves, and each of the second and third guide wheels has one groove. The door opening cable extends from one end of the guide wheel assembly, passes through the end of the lower cover plate where the second guide wheel is located, and wraps around the second and first guide wheels via the grooves. The door closing cable extends from one end of the guide wheel assembly, passes through the end of the lower cover plate where the third guide wheel is located, and wraps around the third and first guide wheels via the grooves.

4. The drive device built into the electric door according to claim 3, characterized in that, The middle cover plate separates the door opening cable and the door closing cable vertically.

5. The drive device built into the electric door according to claim 3, characterized in that, The middle cover plate is located between the first guide wheel, the second guide wheel, and the third guide wheel. Guide wheel limiting blocks are provided at both ends of the middle cover plate, and the guide wheel limiting blocks are inserted into the corresponding grooves.

6. The drive device built into the electric door according to claim 3, characterized in that, The groove depths of the second guide wheel and the third guide wheel are not equal.

7. The drive device built into the electric door according to claim 2, characterized in that, The groove depths of the first steering wheel and the second steering wheel are not equal.

8. The drive device built into the electric door according to claim 1, characterized in that, Both the door opening mounting end and the door closing mounting end are provided with a housing, and each housing is provided with a tension spring. The door opening pull cable and the door closing pull cable are respectively connected to the corresponding tension spring.

9. The drive device built into the electric door according to claim 3, characterized in that, Both the middle cover plate and the lower cover plate are provided with wiring grooves. The door opening pull cable is located in the wiring groove of the middle cover plate, and the door closing pull cable is located in the wiring groove of the lower cover plate.

10. The drive device built into the electric door according to claim 1, characterized in that, The opening and closing cables are provided with sleeves in the portions located between the drive assembly and the steering wheel assembly.

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