Electric side door opening actuator

Abstract

The utility model discloses an electric side door opening actuator which comprises an installation shell, a motor, a transmission wheel, a lead screw and a transmission piece, the transmission wheel is rotationally installed on the installation shell, an installation cavity is formed in the transmission wheel, and at least two transmission grooves are formed in the inner wall of the installation cavity; the screw rod penetrates through the mounting cavity; the transmission part is arranged on the lead screw in a sleeving mode and connected with the lead screw in a threaded mode, the transmission part is arranged in the installation cavity, at least two transmission teeth are arranged on the periphery of the transmission part in a protruding mode, all the transmission teeth are inserted into all the transmission grooves in a one-to-one correspondence mode, and the outer side wall of each transmission tooth is attached to the bottom wall of the corresponding transmission groove. The transmission teeth can abut against the side walls of the corresponding transmission grooves, and at least one of the transmission teeth and the side walls of the corresponding transmission grooves is elastic. According to the electric side-opening door actuator, transmission matching between the transmission wheel and the transmission piece is more reliable, vibration and impact between the transmission wheel and the transmission piece can be buffered, and working reliability and transmission stability are better.

Description

Technical Field

[0001] The utility model relates to the technical field of automobiles, in particular to an electric side door actuator. Background Art

[0002] The side door of a car is a frequently used part of a car, and the corresponding side door of the car needs to be opened and closed every time people get on and off the car. At present, some cars on the market automatically open and close the side door through a side door actuator. These side door actuators usually include a housing, a motor, a gear, a spherical transmission member and a screw rod. The motor is fixedly installed in the housing, the gear is rotatably installed in the housing and is connected to the motor by transmission, a spherical cavity is provided in the gear, the transmission member is installed in the spherical cavity, the screw rod passes through the transmission member and is screwed to the transmission member, wherein, in order to enable the gear to drive the transmission member to rotate and ensure that the transmission member can be universally rotated relative to the gear, the existing method is to open an arc groove on the transmission member, install a cylindrical protrusion on the inner wall of the spherical cavity, the axis of the cylindrical protrusion is along the radial direction of the spherical cavity, and the cylindrical protrusion is abutted against the opposite side walls of the arc groove, so that the cylindrical protrusion can slide along the arc groove and the transmission member can rotate around the axis of the cylindrical protrusion, thereby, the transmission member can be universally rotated relative to the gear and the gear can drive the transmission member to rotate relative to the screw rod, thereby driving the screw rod to slide and rise relative to the transmission member. However, the existing side door actuator has problems such as low working reliability and unstable transmission because the gears and the transmission parts are transmitted through the cooperation between the cylindrical protrusion and the side wall of the arc-shaped groove. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides an electric side door actuator, which has better working reliability and transmission stability.

[0004] According to the embodiment of the utility model, the electric side door actuator includes a mounting shell, a motor, a transmission wheel, a screw rod and a transmission member, wherein the motor is mounted on the mounting shell; the transmission wheel is rotatably mounted on the mounting shell, the transmission wheel is transmission-connected to the motor, a mounting cavity is arranged inside the transmission wheel, at least two transmission grooves are arranged on the inner wall of the mounting cavity, all of the transmission grooves are distributed around the rotation axis of the transmission wheel, the bottom wall of the transmission groove is a part of a spherical surface, and the side wall of the transmission groove extends along the rotation axis of the transmission wheel; the screw rod is passed through the mounting cavity; the transmission member is sleeved on the screw rod and screwed to the screw rod, and the transmission member is arranged In the installation cavity, at least two transmission teeth are protrudingly provided on the outer periphery of the transmission member, and all the transmission teeth are inserted into all the transmission grooves one by one, and the outer side wall of each transmission tooth is in contact with the bottom wall of the corresponding transmission groove, and the transmission wheel can drive the transmission member to rotate relative to the screw rod through the cooperation between the side wall of the transmission groove and the corresponding transmission tooth; wherein, an elastic member is clamped between the transmission tooth and the corresponding side wall of the transmission groove, or the transmission tooth and the corresponding side wall of the transmission groove can abut against each other and at least one of the two is elastic, and the transmission member can swing along the bottom wall of the transmission groove relative to the transmission wheel.

[0005] The electric side door actuator according to the embodiment of the utility model has at least the following beneficial effects: in the electric side door actuator provided by the utility model, an elastic member is clamped between the transmission tooth and the side wall of the corresponding transmission groove, or the transmission tooth and the side wall of the corresponding transmission groove can abut against each other and at least one of them has elasticity, so that an elastic transmission structure is formed between the transmission wheel and the transmission member. Through the elastic transmission structure, while realizing the transmission between the transmission wheel and the transmission member, the transmission member is allowed to swing relative to the transmission wheel, and the contact area for transmission between the transmission wheel and the transmission member is increased, so that the transmission cooperation between the transmission wheel and the transmission member is more reliable, and a buffering effect can be formed on the vibration and impact between the transmission wheel and the transmission member, thereby reducing noise. Through the above-mentioned arrangement, the electric side door actuator provided by the utility model has better working reliability and transmission stability.

[0006] According to some embodiments of the utility model, the transmission tooth includes two elastic parts and a supporting part located between the two elastic parts, the elastic part abuts against the corresponding transmission tooth, the elastic part abuts against the corresponding side wall of the transmission groove, and the outer side wall of the supporting part fits against the corresponding bottom wall of the transmission groove.

[0007] According to some embodiments of the utility model, the transmission member includes a transmission sleeve and an elastic sleeve, the transmission sleeve is embedded in the elastic sleeve, the transmission sleeve is threadedly connected to the screw rod, all the supporting parts are connected to the transmission sleeve, all the elastic parts are connected to the elastic sleeve, and the elastic sleeve is provided with avoidance holes for the corresponding supporting parts to pass through.

[0008] According to some embodiments of the utility model, the rotation axis of the transmission wheel is along the left-right direction, and the mounting shell is provided with a limiting structure, which limits the upward and downward swinging of the screw rod and allows the screw rod to swing forward and backward.

[0009] According to some embodiments of the utility model, the limiting structure includes a limiting cavity arranged on the mounting shell, the right end of the screw rod is inserted into the limiting cavity, the upper and lower side walls of the limiting cavity extend along the front-to-back direction, and an annular support portion is arranged on the outer periphery of the screw rod, and the annular support portion abuts against the upper and lower side walls of the limiting cavity.

[0010] According to some embodiments of the utility model, the axis of the output shaft of the motor is along the up-down direction, and the output shaft of the motor is provided with an engaging portion that engages with the transmission wheel for transmission.

[0011] According to some embodiments of the utility model, the transmission wheel includes a transmission gear and a fixed sleeve, the fixed sleeve is inserted into the transmission gear, the installation cavity is formed by connecting a first recessed hole provided on the fixed sleeve and a second recessed hole provided on the transmission gear, and the transmission groove is formed by connecting a first groove provided on the fixed sleeve and a second groove provided on the transmission gear.

[0012] According to some embodiments of the present utility model, the transmission gear is rotatably mounted on the mounting shell via a first bearing, and the fixing sleeve is rotatably mounted on the mounting shell via a second bearing.

[0013] According to some embodiments of the utility model, the mounting shell has an accommodating cavity, the transmission wheel and the transmission member are installed in the accommodating cavity, one end of the screw rod is located in the accommodating cavity, the other end of the screw rod protrudes from the opening of the accommodating cavity, and a retractable waterproof cover is installed on the other end of the screw rod, and the waterproof cover is connected to the mounting shell and seals the opening of the accommodating cavity.

[0014] According to some embodiments of the utility model, a side door connecting sleeve is included, the waterproof sleeve is located inside the side door connecting sleeve, and the side door connecting sleeve is connected to the installation shell.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 This is an internal schematic diagram of an electric side door actuator according to an embodiment of the utility model;

[0018] Figure 2 for Figure 1 A schematic diagram of the structure of an electric side door actuator on the internal AA section is shown;

[0019] Figure 3 for Figure 1 An exploded view of an electric side door actuator is shown;

[0020] Figure 4 for Figure 1 An exploded view of a transmission wheel of an electric side door actuator is shown;

[0021] Figure 5 for Figure 1 An exploded view of the transmission components of an electric side door actuator is shown.

[0022] Reference numerals:

[0023] Mounting shell 100, accommodating cavity 110, limiting cavity 111, motor 200, output shaft 210, meshing portion 211, transmission wheel 300, transmission gear 300a, fixing sleeve 300b, mounting cavity 310, first recessed hole 311, second recessed hole 312, transmission groove 320, first groove 321, second groove 322, screw rod 400, annular support portion 410, transmission member 500, transmission sleeve 500a, elastic sleeve 500b, transmission tooth 510, elastic portion 510a, support portion 510b, avoidance hole 520, waterproof sleeve 600, side door connecting sleeve 700, first bearing 810, second bearing 820. DETAILED DESCRIPTION

[0024] The embodiments of the present invention are described in detail below, and examples of the embodiments 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 below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0025] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0026] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0027] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0028] Reference Figure 1 , Figure 2 and Figure 4 According to an embodiment of the utility model, the electric side door actuator includes a mounting shell 100, a motor 200, a transmission wheel 300, a screw rod 400 and a transmission member 500. The motor 200 is mounted on the mounting shell 100; the transmission wheel 300 is rotatably mounted on the mounting shell 100, and the transmission wheel 300 is transmission-connected with the motor 200. A mounting cavity 310 is provided inside the transmission wheel 300, and at least two transmission grooves 320 are provided on the inner wall of the mounting cavity 310. All the transmission grooves 320 are distributed around the rotation axis of the transmission wheel 300. The bottom wall of the transmission groove 320 is a part of a spherical surface, and the side wall of the transmission groove 320 is along the transmission axis. The rotation axis of the driving wheel 300 extends; the screw rod 400 is inserted into the installation cavity 310; the transmission member 500 is sleeved on the screw rod 400 and screwed with the screw rod 400, the transmission member 500 is arranged in the installation cavity 310, and at least two transmission teeth 510 are protrudingly provided on the outer periphery of the transmission member 500, and all the transmission teeth 510 are inserted into all the transmission grooves 320 in a one-to-one correspondence, and the outer side wall of each transmission tooth 510 is in contact with the bottom wall of the corresponding transmission groove 320. The driving wheel 300 can drive the transmission member 500 to rotate relative to the screw rod 400 through the cooperation between the side wall of the transmission groove 320 and the corresponding transmission tooth 510.

[0029] In some embodiments, an elastic member is sandwiched between the transmission tooth 510 and the side wall of the corresponding transmission groove 320; in other embodiments, the transmission tooth 510 and the side wall of the corresponding transmission groove 320 can abut against each other, and one of the two is elastic, or both are elastic. Through the above arrangement, the transmission member 500 can swing universally within a certain range along the bottom wall of the transmission groove 320 relative to the transmission wheel 300. In addition, when the transmission wheel 300 drives the transmission member 500 to rotate around the screw rod 400, the transmission tooth 510 forms a surface contact with the side wall of the transmission groove 320, thereby increasing the contact area between the transmission wheel 300 and the transmission member 500 for transmission, and the bottom wall of the transmission groove 320 can support the transmission member 500.

[0030] In the electric side door actuator provided by the utility model, an elastic member is clamped between the transmission tooth 510 and the side wall of the corresponding transmission groove 320, or the transmission tooth 510 and the side wall of the corresponding transmission groove 320 can abut against each other and at least one of the two is elastic, so that an elastic transmission structure is formed between the transmission wheel 300 and the transmission member 500. Through the elastic transmission structure, while realizing the transmission between the transmission wheel 300 and the transmission member 500, the transmission member 500 is allowed to swing relative to the transmission wheel 300, and the contact area for transmission between the transmission wheel 300 and the transmission member 500 is increased, thereby effectively reducing the stress concentration between the transmission wheel 300 and the transmission member 500, so that the transmission cooperation between the transmission wheel 300 and the transmission member 500 is more reliable and tight, and a buffering effect can be formed on the vibration and impact between the transmission wheel 300 and the transmission member 500, thereby reducing noise. Through the above-mentioned arrangement, the electric side door actuator provided by the utility model has better working reliability and transmission stability.

[0031] Reference Figure 2 and Figure 4 In the specific implementation process, the number of transmission teeth 510 and the number of transmission grooves 320 can be set to two, three or more, and as the number of transmission teeth 510 and the number of transmission grooves 320 increases, the transmission stability and reliability between the transmission wheel 300 and the transmission member 500 can be further improved. Of course, it will also lead to a complex transmission structure between the transmission wheel 300 and the transmission member 500. Those skilled in the art can determine the number of transmission teeth 510 and transmission grooves 320 according to actual needs, and there is no limitation here.

[0032] Reference Figure 2 and Figure 4 It can be imagined that, in order to achieve smoother transmission, all transmission grooves 320 are evenly distributed around the axis of the transmission wheel 300 , and all transmission teeth 510 are evenly distributed around the axis of the screw rod 400 .

[0033] Reference Figure 2 , Figure 4 and Figure 5 According to some embodiments of the present invention, the transmission tooth 510 includes two elastic parts 510a and a support part 510b located between the two elastic parts 510a, the elastic part 510a abuts against the corresponding transmission tooth 510, the elastic part 510a abuts against the side wall of the corresponding transmission groove 320, and the outer side wall of the support part 510b fits against the bottom wall of the corresponding transmission groove 320. Therefore, the transmission tooth 510 abuts against the side wall of the corresponding transmission groove 320 through the elastic part 510a with lower hardness, and supports the elastic part 510a through the support part 510b with higher hardness, thereby ensuring that the transmission tooth 510 has sufficient strength to transmit with the transmission wheel 300 while being elastic.

[0034] Reference Figure 4 and Figure 5 According to some embodiments of the present invention, the transmission member 500 includes a transmission sleeve 500a and an elastic sleeve 500b, the transmission sleeve 500a is embedded in the elastic sleeve 500b, the transmission sleeve 500a is screwed with the screw rod 400, all the support parts 510b are connected to the transmission sleeve 500a, all the elastic parts 510a are connected to the elastic sleeve 500b, and the elastic sleeve 500b is provided with a avoidance hole 520 for the corresponding support parts 510b to pass through. Through the above arrangement, all the elastic parts 510a and the elastic sleeve 500b constitute an integral part, and all the support parts 510b and the transmission sleeve 500a also constitute an integral part, so that the production and installation of the transmission member 500 can be convenient, and the situation that the elastic part 510a falls off can be avoided. In the specific implementation process, the elastic sleeve 500b and the transmission sleeve 500a can be independently molded and then assembled together, or the elastic sleeve 500b can be directly molded on the transmission sleeve 500a through a secondary molding process.

[0035] Reference Figure 1 , Figure 2 and Figure 3 According to some embodiments of the utility model, the mounting shell 100 has a housing chamber 110, the transmission wheel 300 and the transmission member 500 are mounted in the housing chamber 110, one end of the screw rod 400 is located in the housing chamber 110, the other end of the screw rod 400 protrudes from the opening of the housing chamber 110, and a retractable waterproof cover 600 is installed at the other end of the screw rod 400, and the waterproof cover 600 is connected to the mounting shell 100 and seals the opening of the housing chamber 110. Through the above arrangement, the transmission wheel 300, the transmission member 500 and the screw rod 400 can be sealed and protected, waterproof and dustproof, so that the electric side door actuator can be used normally in harsh conditions such as high humidity and dust, and the working reliability is higher.

[0036] Reference Figure 1 and Figure 3According to some embodiments of the utility model, the rotation axis of the transmission wheel 300 is along the left-right direction, and the mounting shell 100 is provided with a limiting structure, which limits the up and down swinging of the screw rod 400 and allows the screw rod 400 to swing back and forth. Through the above arrangement, the screw rod 400 can be prevented from swinging randomly relative to the transmission wheel 300, thereby reducing the activity space of the screw rod 400.

[0037] Reference Figure 1 and Figure 3 According to some embodiments of the utility model, the limiting structure includes a limiting cavity 111 provided in the mounting shell 100, the right end of the screw rod 400 is inserted into the limiting cavity 111, the upper and lower side walls of the limiting cavity 111 extend in the front-to-back direction, and the outer periphery of the screw rod 400 is provided with an annular support portion 510b410, which abuts against the upper and lower side walls of the limiting cavity 111, wherein the limiting cavity 111 is a part of the above-mentioned accommodating cavity 110. Through the above-mentioned arrangement, the screw rod 400 can only swing forward and backward along the upper and lower side walls of the limiting cavity 111. In addition, the limiting cavity 111 can protect the screw rod 400, play a waterproof and dustproof role, and can also prevent objects outside the limiting cavity 111 from colliding with the screw rod 400.

[0038] It should be noted that the above-mentioned limiting structure can also be arranged in other ways. For example, the above-mentioned limiting cavity 111 can be replaced by two circular limiting rods arranged at intervals. The circular limiting rods extend along the front-to-back direction. The circular limiting rods are rotatably installed on the mounting shell 100, and the screw rod 400 passes through the two limiting rods.

[0039] Reference Figures 1 to 3 According to some embodiments of the present invention, the axis of the output shaft 210 of the motor 200 is along the up-down direction, and the output shaft 210 of the motor 200 is provided with a meshing portion 211 that meshes with the transmission wheel 300. Through the above arrangement, the angle between the axis of the output shaft 210 of the motor 200 and the axis of the screw rod 400 can always remain unchanged.

[0040] During the specific implementation process, the angle between the axis of the output shaft 210 of the motor 200 and the axis of the screw rod 400 is 90 degrees. Therefore, the axis of the output shaft 210 of the motor 200 and the axis of the screw rod 400 can always remain perpendicular to each other, which can reduce the vibration of the screw rod 400 along the axis direction of the screw rod 400 from being transmitted to the inside of the motor 200.

[0041] Reference Figure 2 and Figure 3 In a specific implementation process, the meshing portion 211 can be configured as a worm or an output gear.

[0042] Reference Figures 1 to 3According to some embodiments of the utility model, the transmission wheel 300 includes a transmission gear wheel 510 300a and a fixing sleeve 300b, the fixing sleeve 300b is inserted into the transmission gear wheel 510 300a, the installation cavity 310 is formed by the first concave hole 311 provided on the fixing sleeve 300b and the second concave hole 312 provided on the transmission gear wheel 510 300a, and the transmission groove 320 is formed by the first groove 321 provided on the fixing sleeve 300b and the second groove 322 provided on the transmission gear wheel 510 300a. At this time, the transmission gear wheel 510 300a and the fixing sleeve 300b are distributed along the rotation axis of the transmission gear wheel 510 300a. With the above arrangement, the transmission member 500 is easily installed in the first concave hole 311 and the second concave hole 312, which is convenient for assembly.

[0043] Reference Figure 1 and Figure 3 According to some embodiments of the present invention, the transmission gear wheel 510 300a is rotatably mounted on the mounting shell 100 through the first bearing 810, and the fixed sleeve 300b is rotatably mounted on the mounting shell 100 through the second bearing 820. Through the above arrangement, the rotation stability of the transmission wheel 300 can be improved.

[0044] Reference Figure 1 and Figure 3 According to some embodiments of the present invention, a side door connecting sleeve 700 is included, a waterproof sleeve 600 is located in the side door connecting sleeve 700, and the side door connecting sleeve 700 is connected to the mounting shell 100, so that the electric side door actuator can be installed on the inner wall of the side door shell through the side door connecting sleeve 700. The setting of the side door connecting sleeve 700 increases the distance between the installation point of the electric side door actuator on the side door shell and the rotation center of the transmission member 500, thereby reducing the swing angle of the screw rod 400 relative to the transmission wheel 300.

[0045] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0046] The embodiment is described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiment, and various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the present purpose.

Claims

1. An electric side door actuator, characterized in that: include: Mounting shell (100); A motor (200) mounted on the mounting housing (100); A transmission wheel (300) is rotatably mounted on the mounting shell (100), the transmission wheel (300) is transmission-connected to the motor (200), a mounting cavity (310) is provided inside the transmission wheel (300), at least two transmission grooves (320) are provided on the inner wall of the mounting cavity (310), all of the transmission grooves (320) are distributed around the rotation axis of the transmission wheel (300), the bottom wall of the transmission groove (320) is a part of a spherical surface, and the side wall of the transmission groove (320) extends along the rotation axis of the transmission wheel (300); A screw rod (400) is inserted into the installation cavity (310); A transmission member (500) is sleeved on the screw rod (400) and is threadedly connected to the screw rod (400). The transmission member (500) is arranged in the installation cavity (310). At least two transmission teeth (510) are protrudingly arranged on the outer periphery of the transmission member (500). All the transmission teeth (510) are inserted into all the transmission grooves (320) in a one-to-one correspondence. The outer side wall of each transmission tooth (510) is in contact with the bottom wall of the corresponding transmission groove (320). The transmission wheel (300) can drive the transmission member (500) to rotate relative to the screw rod (400) through the cooperation between the side wall of the transmission groove (320) and the corresponding transmission tooth (510); An elastic member is clamped between the transmission tooth (510) and the corresponding side wall of the transmission groove (320), or the transmission tooth (510) and the corresponding side wall of the transmission groove (320) are able to abut against each other and at least one of them is elastic, and the transmission member (500) is able to swing along the bottom wall of the transmission groove (320) relative to the transmission wheel (300).

2. The electric side door actuator according to claim 1, characterized in that: The transmission tooth (510) comprises two elastic parts (510a) and a support part (510b) located between the two elastic parts (510a); the elastic part (510a) abuts against the corresponding transmission tooth (510); the elastic part (510a) abuts against the side wall of the corresponding transmission groove (320); and the outer side wall of the support part (510b) fits against the bottom wall of the corresponding transmission groove (320).

3. The electric side door actuator according to claim 2, characterized in that: The transmission member (500) comprises a transmission sleeve (500a) and an elastic sleeve (500b); the transmission sleeve (500a) is embedded in the elastic sleeve (500b); the transmission sleeve (500a) is threadedly connected to the screw rod (400); all the support parts (510b) are connected to the transmission sleeve (500a); all the elastic parts (510a) are connected to the elastic sleeve (500b); and the elastic sleeve (500b) is provided with avoidance holes (520) for the corresponding support parts (510b) to pass through.

4. The electric side door actuator according to claim 1, characterized in that: The rotation axis of the transmission wheel (300) is along the left-right direction, and the mounting shell (100) is provided with a limiting structure, which limits the upward and downward swinging of the screw rod (400) and allows the screw rod (400) to swing forward and backward.

5. The electric side door actuator according to claim 4, characterized in that: The limiting structure comprises a limiting cavity (111) arranged on the mounting shell (100), the right end of the screw rod (400) is inserted into the limiting cavity (111), the upper and lower side walls of the limiting cavity (111) extend in the front-rear direction, and the outer periphery of the screw rod (400) is provided with an annular support portion (510b) (410), and the annular support portion (510b) (410) abuts against the upper and lower side walls of the limiting cavity (111).

6. The electric side door actuator according to claim 4, characterized in that: The axis of the output shaft (210) of the motor (200) is along the up-down direction, and the output shaft (210) of the motor (200) is provided with a meshing portion (211) that meshes with the transmission wheel (300) for transmission.

7. The electric side door actuator according to claim 1, characterized in that: The transmission wheel (300) comprises a transmission gear (510) wheel (300a) and a fixing sleeve (300b); the fixing sleeve (300b) is inserted into the transmission gear (510) wheel (300a); the mounting cavity (310) is formed by a first concave hole (311) provided on the fixing sleeve (300b) and a second concave hole (312) provided on the transmission gear (510) wheel (300a); and the transmission groove (320) is formed by a first groove (321) provided on the fixing sleeve (300b) and a second groove (322) provided on the transmission gear (510) wheel (300a).

8. The electric side door actuator according to claim 7, characterized in that: The transmission gear (510) wheel (300a) is rotatably mounted on the mounting shell (100) via a first bearing (810), and the fixing sleeve (300b) is rotatably mounted on the mounting shell (100) via a second bearing (820).

9. The electric side door actuator according to claim 1, characterized in that: The installation shell (100) has a accommodating cavity (110), the transmission wheel (300) and the transmission member (500) are installed in the accommodating cavity (110), one end of the screw rod (400) is located in the accommodating cavity (110), the other end of the screw rod (400) protrudes from the opening of the accommodating cavity (110) and a retractable waterproof cover (600) is installed at the other end of the screw rod (400), and the waterproof cover (600) is connected to the installation shell (100) and seals the opening of the accommodating cavity (110).

10. The electric side door actuator according to claim 9, characterized in that: It comprises a side door connecting sleeve (700), the waterproof sleeve (600) is located inside the side door connecting sleeve (700), and the side door connecting sleeve (700) is connected to the installation shell (100).

Images