Electric side door opening actuator

Abstract

Disclosed in the present invention is an electric side door opening actuator, comprising a mounting housing, a motor, a transmission wheel, a lead screw, and a transmission member. The transmission wheel is rotatably mounted on the mounting housing, a mounting cavity is formed inside the transmission wheel, and at least two transmission slots are formed on the inner wall of the mounting cavity; the lead screw passes through the mounting cavity; the transmission member is fitted over the lead screw and is threadedly connected to the lead screw, and the transmission member is arranged in the mounting cavity; and at least two transmission teeth protrude from the outer circumference of the transmission member, all the transmission teeth are inserted into all the transmission slots in one-to-one correspondence, and the outer side wall of each transmission tooth is fitted to the bottom wall of the corresponding transmission slot. The electric side door opening actuator provided in the present invention has better operation reliability and transmission stability.

Description

An electric side-opening door actuator Technical Field

[0001] This invention relates to the field of automotive technology, and in particular to an electric side-opening door actuator. Background Technology

[0002] The side door of a car is a frequently used component, requiring opening and closing each time someone gets in or out. Currently, some cars on the market use side door actuators to automatically open and close the side doors. These actuators typically include a housing, a motor, a gear, a spherical transmission component, and a lead screw. The motor is fixedly mounted in the housing, the gear is rotatably mounted inside the housing and connected to the motor, and the gear has a spherical cavity inside. The transmission component is installed inside the spherical cavity, and the lead screw passes through and is screwed to the transmission component. To enable the gear to drive the transmission component to rotate and ensure that the transmission component can rotate omnidirectionally relative to the gear, current methods involve creating an arc-shaped groove on the transmission component and installing 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 abuts against the opposite side walls of the arc-shaped groove. Thus, the cylindrical protrusion can slide along the arc-shaped groove, and the transmission component can rotate around the axis of the cylindrical protrusion. Consequently, the transmission component can rotate omnidirectionally relative to the gear, and the gear can drive the transmission component to rotate relative to the lead screw, thereby causing the lead screw to slide and rise relative to the transmission component. However, existing side-opening door actuators suffer from problems such as unstable transmission and low operational reliability between gears and transmission components. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention proposes an electric side-opening door actuator, which has better operational reliability and transmission stability.

[0004] According to an embodiment of the present invention, an electric side-opening door actuator includes a mounting housing, a motor, a transmission wheel, a lead screw, and a transmission component. The motor is mounted on the mounting housing; the transmission wheel is rotatably mounted on the mounting housing and is drively connected to the motor; the transmission wheel has a mounting cavity inside, and the inner wall of the mounting cavity has at least two transmission grooves. All the transmission grooves are distributed around the rotation axis of the transmission wheel, the bottom wall of the transmission groove is part of a sphere, and the side wall of the transmission groove extends along the rotation axis of the transmission wheel; the lead screw passes through the mounting cavity; the transmission component is sleeved on the lead screw and screwed to the lead screw, and the transmission component is disposed in the mounting cavity. At least two transmission teeth protrude from the outer periphery of the transmission component, and all the transmission teeth are inserted into all the transmission grooves one-to-one. The outer wall of each transmission tooth fits against the bottom wall of the corresponding transmission groove. The transmission wheel can drive the transmission component to rotate relative to the lead screw through the cooperation between the side wall of the transmission groove and the corresponding transmission tooth.

[0005] The electric side-opening door actuator according to an embodiment of the present invention has at least the following beneficial effects: In the electric side-opening door actuator provided by the present invention, the outer wall of the transmission tooth on the transmission member and the bottom wall of the transmission groove on the transmission wheel can abut against each other. Since the bottom wall of the transmission groove is part of a sphere, the contact area between the outer wall of the transmission tooth and the bottom wall of the transmission groove can be larger. Therefore, during the transmission cooperation between the transmission wheel and the transmission member, the bottom wall of the transmission groove can more stably support the transmission member, thereby improving the working reliability and transmission stability of the electric side-opening door actuator provided by the present invention.

[0006] According to some embodiments of the present invention, an elastic element is held 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 is elastic, and the transmission element can swing relative to the transmission wheel along the bottom wall of the transmission groove.

[0007] According to some embodiments of the present invention, the transmission tooth includes two elastic portions and a support portion located between the two elastic portions. The elastic portions abut against the corresponding transmission tooth and abut against the side wall of the corresponding transmission groove. The outer side wall of the support portion fits against the bottom wall of the corresponding transmission groove.

[0008] According to some embodiments of the present invention, the transmission component includes a transmission sleeve and an elastic sleeve. The transmission sleeve is embedded in the elastic sleeve and is screwed to the lead screw. All the support portions are connected to the transmission sleeve, and all the elastic portions are connected to the elastic sleeve. The elastic sleeve is provided with clearance holes for the corresponding support portions to pass through.

[0009] According to some embodiments of the present invention, the transmission gear includes hardened teeth and a rubber coating covering the surface of the hardened teeth, the rubber coating having elasticity.

[0010] According to some embodiments of the present invention, there is a movable gap between the transmission tooth and the sidewall of the corresponding transmission groove, so that the transmission member can swing relative to the transmission wheel along the bottom wall of the transmission groove.

[0011] According to some embodiments of the present invention, the transmission wheel includes a transmission gear and a fixed sleeve, the fixed sleeve is inserted into the transmission gear, the mounting cavity is formed by a first recess in the fixed sleeve and a second recess in the transmission gear, and the transmission groove is formed by a first groove in the fixed sleeve and a second groove in the transmission gear.

[0012] According to some embodiments of the present invention, the transmission wheel includes two mounting sleeves and a disc gear. The two mounting sleeves are inserted into the two ends of the disc gear in a one-to-one correspondence. The mounting cavity is formed by the two mounting sleeves. The mounting sleeves are rotatably mounted on the mounting shell. The disc gear can drive the mounting sleeves to rotate. The disc gear is connected to the motor in a transmission connection.

[0013] According to some embodiments of the present invention, the output shaft of the motor is provided with a meshing portion, the transmission wheel has teeth for meshing and driving with the meshing portion, the teeth are at least partially elastic, and the elastic portion of the teeth meshes with the meshing portion.

[0014] According to some embodiments of the present invention, the transmission member is provided with a clamping structure, which engages with the transmission thread of the lead screw to restrict the axial movement of the lead screw relative to the transmission member.

[0015] According to some embodiments of the present invention, the motor integrates a controller, and the controller is configured with connectors.

[0016] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0018] Figure 1 is an internal schematic diagram of an electric side-opening door actuator according to some embodiments of the present invention;

[0019] Figure 2 is a schematic diagram of the internal AA section of the electric side-opening actuator shown in Figure 1;

[0020] Figure 3 is an exploded view of the electric side-opening door actuator shown in Figure 1;

[0021] Figure 4 is an exploded view of the drive wheel of the electric side-opening door actuator shown in Figure 1;

[0022] Figure 5 is an exploded view of the transmission wheel according to the second embodiment of the present invention;

[0023] Figure 6 is an exploded view of the transmission component of the electric side-opening door actuator shown in Figure 1;

[0024] Figure 7 is a schematic diagram of the transmission components of the electric side-opening door actuator shown in Figure 5;

[0025] Figure 8 is a schematic diagram of the transmission component according to the third embodiment of the present invention;

[0026] Figure 9 is a schematic diagram of the transmission component and the lead screw shown in Figure 5;

[0027] Figure 10 is a cross-sectional view of the transmission component and the lead screw shown in Figure 9;

[0028] Figure 11 is an internal schematic diagram of an electric side-opening door actuator according to some other embodiments of the present invention.

[0029] Reference numerals: Mounting housing 100, main housing 100a, bracket 100b, receiving cavity 110, limiting cavity 111, motor 200, output shaft 210, meshing part 211, cover 220, transmission wheel 300, transmission gear 300a, fixing sleeve 300b, mounting sleeve 300c, disc gear 300d, mounting cavity 310, first concave hole 311, second concave hole 312, transmission groove 320, first groove 321, second groove 322, gear tooth 330, hardened wheel 340, hardened tooth 341, soft wheel 350, soft tooth 351, lead screw 400, annular support 4 10. Transmission component 500, transmission sleeve 500a, elastic sleeve 500b, transmission gear 510, elastic part 510a, support part 510b, hardened gear 510c, rubber coating layer 510d, clearance hole 520, pressing structure 530, elastic pressing part 531, abutting part 532, elastic ring 533, waterproof sleeve 600, side door connecting sleeve 700, first bearing 810, second bearing 820, controller 900, connector 910. Detailed Implementation

[0030] Embodiments of the present invention 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 below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0031] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not 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 limiting this invention.

[0032] In the description of this invention, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0033] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0034] Referring to Figures 1, 2, and 4, an electric side-opening door actuator according to an embodiment of the present invention includes a mounting housing 100, a motor 200, a transmission wheel 300, a lead screw 400, and a transmission component 500. The motor 200 is mounted on the mounting housing 100; the transmission wheel 300 is rotatably mounted on the mounting housing 100 and is connected to the motor 200 in a transmission manner. The transmission wheel 300 has a mounting cavity 310 inside, and at least two transmission grooves 320 are formed 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 each transmission groove 320 is part of a sphere. The sidewall extends along the rotation axis of the transmission wheel 300; the lead screw 400 passes through the mounting cavity 310; the transmission component 500 is sleeved on the lead screw 400 and screwed to the lead screw 400. The transmission component 500 is located in the mounting cavity 310. At least two transmission teeth 510 protrude from the outer periphery of the transmission component 500. All the transmission teeth 510 are inserted into all the transmission slots 320 in a one-to-one correspondence. The outer sidewall of each transmission tooth 510 fits against the bottom wall of the corresponding transmission slot 320. The transmission wheel 300 can drive the transmission component 500 to rotate relative to the lead screw 400 through the cooperation between the sidewall of the transmission slot 320 and the corresponding transmission tooth 510. With the above configuration, the outer wall of the transmission tooth 510 on the transmission member 500 and the bottom wall of the transmission groove 320 on the transmission wheel 300 can abut and fit against each other. Since the bottom wall of the transmission groove 320 is part of a sphere, the contact area between the outer wall of the transmission tooth 510 and the bottom wall of the transmission groove 320 can be larger. As a result, during the transmission cooperation between the transmission wheel 300 and the transmission member 500, the transmission wheel 300 can more stably support the transmission member 500, thereby improving the reliability and transmission stability of the electric side-opening door actuator provided by the present invention.

[0035] In practical implementation, the number of transmission teeth 510 and transmission grooves 320 can be set to two, three, or more. As the number of transmission teeth 510 and transmission grooves 320 increases, the transmission stability between the transmission wheel 300 and the transmission component 500 can be further improved. However, this also leads to a more complex transmission structure between the transmission wheel 300 and the transmission component 500, and a decrease in the thickness and strength of a single transmission tooth 510. For example, the transmission component 500 shown in Figure 4 has eight transmission teeth 510, resulting in a relatively complex structure, but the power transmission between the transmission component 500 and the transmission wheel 300 is more uniform, and the transmission stability is better. The transmission component 500 shown in Figures 7 and 8 has four transmission teeth 510, resulting in a smaller number of teeth. Although this reduces transmission stability to some extent, the structure of the transmission component 500 is simpler, and the thickness and shape of a single transmission tooth 510 are larger, which can increase the strength of a single transmission tooth 510 and reduce the cost of the transmission component 500. Those skilled in the art can determine the number of transmission teeth 510 and transmission grooves 320 according to actual needs, and no restrictions are imposed here.

[0036] Referring to Figures 4 and 6, it can be imagined that, in order to achieve smoother transmission, all transmission grooves 320 are evenly distributed around the axis of transmission wheel 300, and all transmission teeth 510 are evenly distributed around the axis of lead screw 400.

[0037] In specific implementation, the transmission component 500 can have at least two configuration methods, such as the configuration methods of the transmission component 500 shown in Figures 6 to 8. Those skilled in the art can consider the cost and performance of the transmission component 500 in various implementation methods according to the actual situation and select one of the configuration methods of the transmission component 500. For example, if the transmission component 500 needs to have better performance, the transmission component 500 can choose the implementation method shown in Figure 6 or Figure 7. If the transmission component 500 does not need to have high performance and requires a low cost, the transmission component 500 can choose the implementation method shown in Figure 8.

[0038] Specifically, in some embodiments, in order to form an elastic transmission structure between the transmission wheel 300 and the transmission member 500, the transmission member 500 may adopt the implementation shown in FIG6 and FIG7.

[0039] Referring to Figure 2, specifically, an elastic element is held 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 or both are elastic. Thus, the transmission member 500 can oscillate omnidirectionally relative to the transmission wheel 300 within a certain range along the bottom wall of the transmission groove 320. Furthermore, during the rotation of the transmission member 500 around the lead screw 400 driven by the transmission wheel 300, a surface contact is formed between the transmission tooth 510 and the side wall of the transmission groove 320, increasing the contact area for transmission between the transmission wheel 300 and the transmission member 500. With the above-described configuration, the electric side-opening door actuator provided by the present invention can form an elastic transmission structure between the transmission wheel 300 and the transmission component 500. This elastic transmission structure allows the transmission component 500 to swing relative to the transmission wheel 300 while simultaneously enabling transmission between the transmission wheel 300 and the transmission component 500. It also increases the contact area between the transmission wheel 300 and the transmission component 500 for transmission, effectively reducing stress concentration between them. This makes the transmission cooperation between the transmission wheel 300 and the transmission component 500 more reliable and tighter, and also provides a buffer against vibrations and impacts, reducing noise. Therefore, the operational reliability and transmission stability of the electric side-opening door actuator provided by the present invention can be further improved.

[0040] Specifically, referring to Figures 2, 4, and 6, the transmission gear 510 includes two elastic portions 510a and a support portion 510b located between the two elastic portions 510a. The elastic portions 510a abut against the corresponding transmission gear 510 and abut against the side wall of the corresponding transmission groove 320. The outer side wall of the support portion 510b fits against the bottom wall of the corresponding transmission groove 320. Thus, the transmission gear 510 abuts against the side wall of the corresponding transmission groove 320 through the elastic portion 510a with lower hardness, and is supported by the elastic portion 510a through the support portion 510b with higher hardness, ensuring that the transmission gear 510 has sufficient strength while being elastic to transmit power with the transmission wheel 300.

[0041] Referring to Figures 4 and 6, according to some embodiments of the present invention, the transmission component 500 includes a transmission sleeve 500a and an elastic sleeve 500b. The transmission sleeve 500a is embedded in the elastic sleeve 500b and is screwed to the lead screw 400. All support portions 510b are connected to the transmission sleeve 500a, and all elastic portions 510a are connected to the elastic sleeve 500b. The elastic sleeve 500b is provided with clearance holes 520 for the corresponding support portions 510b to pass through. Through the above arrangement, all elastic portions 510a and the elastic sleeve 500b constitute an integral component, and all support portions 510b and the transmission sleeve 500a also constitute an integral component. This facilitates the production and installation of the transmission component 500 and prevents the elastic portions 510a from falling off, making the transmission component 500 more robust and reliable. In specific implementations, the elastic sleeve 500b and the transmission sleeve 500a can be molded independently and then assembled together.

[0042] In the specific implementation process, the transmission sleeve 500a can be made of hard materials such as hard plastic or hard metal, while the elastic sleeve 500b can be made of soft materials such as rubber, silicone or other soft rubber.

[0043] It is conceivable that the above-mentioned elastic transmission structure can also be configured in other ways. For example, referring to FIG7, the transmission gear 510 includes a hard tooth 510c and a rubber coating layer 510d covering the surface of the hard tooth 510c. The rubber coating layer 510d is elastic. In specific implementation, the material of the hard tooth 510c is hard plastic or hard metal, etc., and the material of the rubber coating layer 510d can be rubber, silicone or other soft materials. The above-mentioned rubber coating layer 510d can be formed directly on the hard body of the transmission component 500 by using a rubber coating process.

[0044] It should be noted that although the structural strength and reliability of the transmission component 500 shown in Figure 7 are somewhat lower than those shown in Figure 6, the transmission component 500 shown in Figure 7 has a simpler structure and is easier to manufacture, which can reduce the cost of the transmission component 500.

[0045] It is conceivable that, in some embodiments, for cost control purposes, the elastic transmission structure between the transmission wheel 300 and the transmission member 500 can be omitted. For this purpose, a movable gap exists between the transmission tooth 510 and the side wall of the corresponding transmission groove 320, allowing the transmission member 500 to oscillate relative to the transmission wheel 300 along the bottom wall of the transmission groove 320. When the transmission tooth 510 contacts and abuts against one side wall of the transmission groove 320, power can be transmitted between the transmission wheel 300 and the transmission member 500. Referring to Figure 8, with this movable gap configuration, the transmission member 500 can be directly made of rigid material. Although this would lower the stability of the electric side-opening door actuator compared to one with an elastic transmission structure, the transmission member 500 is a simple, rigid component, making manufacturing easier and thus reducing the cost of the electric side-opening door actuator.

[0046] It should be noted that the extension of the sidewall of the transmission groove 320 along the rotation axis of the transmission wheel 300 means that the extension direction of the sidewall of the transmission groove 320 is parallel or inclined relative to the rotation axis of the transmission wheel 300. In the specific implementation process, in order to ensure the transmission performance between the transmission wheel 300 and the transmission component 500, as shown in Figures 4 and 5, the middle part of the sidewall of the transmission groove 320 is parallel to the axis of the transmission wheel 300. When the transmission component 500 adopts the embodiment shown in Figures 7 and 8, in order to increase the range of omnidirectional swing of the transmission component 500 relative to the transmission wheel 300, the two opposite sidewalls of the transmission groove 320 are inclined outward at the end position.

[0047] Referring to Figures 1, 3, and 10, according to some embodiments of the present invention, the mounting housing 100 has a receiving cavity 110. The transmission wheel 300 and the transmission component 500 are installed within the receiving cavity 110. One end of the lead screw 400 is located within the receiving cavity 110, and the other end of the lead screw 400 protrudes from the opening of the receiving cavity 110. A retractable waterproof sleeve 600 is installed on the other end of the lead screw 400. The waterproof sleeve 600 is connected to the mounting housing 100 and seals the opening of the receiving cavity 110. Through the above arrangement, the transmission wheel 300, the transmission component 500, and the lead screw 400 can all be sealed and protected, making them waterproof and dustproof. This allows the electric side-opening door actuator to operate normally under harsh conditions such as high humidity and dust, resulting in higher operational reliability.

[0048] Referring to Figures 1 and 3, according to some embodiments of the present invention, 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. The limiting structure restricts the lead screw 400 from swinging up and down and allows the lead screw 400 to swing back and forth. Through the above arrangement, the lead screw 400 can be prevented from swinging arbitrarily relative to the transmission wheel 300, and the activity space of the lead screw 400 can be reduced.

[0049] Referring to Figures 1 and 3, according to some embodiments of the present invention, the limiting structure includes a limiting cavity 111 disposed in the mounting housing 100, the right end of the lead screw 400 being inserted into the limiting cavity 111, the upper and lower side walls of the limiting cavity 111 extending in the front-back direction, and an annular support member 410 disposed on the outer periphery of the lead screw 400, the annular support member 410 abutting against the upper and lower side walls of the limiting cavity 111, wherein the limiting cavity 111 is a part of the aforementioned receiving cavity 110. Through the above arrangement, the lead screw 400 can only swing back and forth along the upper and lower side walls of the limiting cavity 111. Furthermore, the limiting cavity 111 can protect the lead screw 400, providing waterproofing and dustproofing, and can also prevent objects outside the limiting cavity 111 from colliding with the lead screw 400.

[0050] It should be noted that the above-mentioned limiting structure can also adopt other settings. For example, the above-mentioned limiting cavity 111 can be replaced with two spaced circular limiting rods. The circular limiting rods extend in the front-back direction and are rotatably mounted on the mounting shell 100. The lead screw 400 passes through the two limiting rods.

[0051] Referring to 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 vertical direction, and the output shaft 210 of the motor 200 is provided with a meshing part 211 that meshes with the transmission wheel 300 for transmission. Through the above arrangement, the included angle between the axis of the output shaft 210 of the motor 200 and the axis of the lead screw 400 can remain constant.

[0052] In the specific implementation process, the angle between the axis of the output shaft 210 of the motor 200 and the axis of the lead screw 400 is 90 degrees. As a result, the axis of the output shaft 210 of the motor 200 and the axis of the lead screw 400 can always remain perpendicular to each other, which can reduce the transmission of vibration along the axis of the lead screw 400 to the inside of the motor 200.

[0053] Referring to Figures 3 and 10, in a specific implementation, the meshing part 211 described above can be configured as a worm gear. Of course, in other embodiments, the meshing part 211 can also be configured as an output gear.

[0054] In specific implementation, the transmission wheel 300 can have at least two implementation methods, such as the implementation methods of the transmission wheel 300 shown in Figures 4 and 5. Those skilled in the art can select one of the implementation methods of the transmission wheel 300 according to actual needs. These different implementation methods of the transmission wheel 300 can all meet the installation requirements of the transmission component 500 in the above-mentioned different implementation methods.

[0055] Referring to Figures 3 and 4, according to some embodiments of the present invention, the transmission wheel 300 includes a transmission gear 300a and a fixing sleeve 300b. The fixing sleeve 300b is inserted into the transmission gear 300a. The mounting cavity 310 is formed by a first recess 311 provided in the fixing sleeve 300b and a second recess 312 provided in the transmission gear 300a. The transmission groove 320 is formed by a first groove 321 provided in the fixing sleeve 300b and a second groove 322 provided in the transmission gear 300a. In this case, the transmission gear 300a and the fixing sleeve 300b are distributed along the rotation axis of the transmission gear 300a. With the above configuration, the transmission component 500 can be easily installed into the first recess 311 and the second recess 312, which facilitates assembly. In addition, the transmission wheel 300 is divided into two parts, the transmission gear 300a and the fixing sleeve 300b, which reduces the number of split structures and allows the transmission wheel 300 to be installed more stably in the mounting housing 100.

[0056] During assembly, the transmission component 500 can first be inserted into the first recess 311 of the fixed sleeve 300b (or the second recess 312 of the transmission gear 300a), and then the transmission gear 300a and the fixed sleeve 300b can be inserted so that the transmission component 500 is inserted into the second recess 312 of the transmission gear 300a (or the first recess 311 of the fixed sleeve 300b). Since the transmission wheel 300 formed by the assembly of the transmission gear 300a and the fixed sleeve 300b is symmetrical, the installation direction of the transmission gear 300a and the fixed sleeve 300b can be interchanged, reducing the assembly difficulty.

[0057] Referring to Figures 1 and 3, according to some embodiments of the present invention, the transmission gear 300a is rotatably mounted on the mounting housing 100 via the first bearing 810, and the fixed sleeve 300b is rotatably mounted on the mounting housing 100 via the second bearing 820. Through the above arrangement, the rotational smoothness of the transmission wheel 300 can be improved.

[0058] Referring to Figure 5, in some embodiments, the transmission wheel 300 can also adopt other configurations. Specifically, the transmission wheel 300 includes two mounting sleeves 300c and a disc gear 300d. The two mounting sleeves 300c are inserted into the two ends of the disc gear 300d in a one-to-one correspondence. The mounting cavity 310 is formed by the two mounting sleeves 300c. The mounting sleeves 300c are rotatably mounted on the mounting shell 100. The disc gear 300d can drive the mounting sleeves 300c to rotate. The disc gear 300d is connected to the motor 200 for transmission. The two mounting sleeves 300c are rotatably mounted on the mounting shell 100 through the first bearing 810 and the second bearing 820 in a one-to-one correspondence. The two sides of the two mounting sleeves 300c and the two opposite sides of the disc gear 300d are correspondingly fitted. With the above configuration, the disc gear 300d is easy to manufacture, and the two mounting sleeves 300c have the same structure. Only one set of molds is needed to complete the production of the two mounting sleeves 300c, thereby reducing the overall production cost of the transmission wheel 300. Furthermore, the disc gear 300d can be replaced after it wears out.

[0059] During assembly, the transmission component 500 can be first installed into the first mounting sleeve 300c, then one end of the disc gear 300d is inserted into the first mounting sleeve 300c, and then the second mounting sleeve 300c is inserted into the other end of the disc gear 300d, and the transmission component 500 is installed into the second mounting sleeve 300c. Since the transmission wheel 300 assembled by the disc gear 300d and the two mounting sleeves 300c is symmetrical, the installation direction of the disc gear 300d and the two mounting sleeves 300c can be interchanged, reducing the assembly difficulty.

[0060] Referring to Figures 3 to 5, according to some embodiments of the present invention, the transmission wheel 300 has teeth 330 for engaging with the meshing part 211. Specifically, in the embodiment shown in Figure 4, a plurality of teeth 330 are provided and evenly distributed on the outer periphery of the transmission gear 300a; in the embodiment shown in Figure 5, a plurality of teeth 330 are provided and evenly distributed on the outer periphery of the disc gear 300d.

[0061] It is conceivable that, in some embodiments, for cost considerations, the gear teeth 330 can be made entirely of hard materials. Specifically, in the embodiment shown in Figure 4, the gear teeth 330 are directly machined or formed on the transmission gear 300a. The transmission gear 300a has a simple structure and is easy to process, thereby reducing production costs.

[0062] It is conceivable that, based on considerations such as reducing wear and noise, in some embodiments, referring to the implementation shown in FIG5, the gear teeth 330 are at least partially elastic, and the elastic portion of the gear teeth 330 engages with the meshing portion 211. Thus, a buffering effect can be formed between the gear teeth 330 and the meshing portion 211, reducing wear and noise between the gear teeth 330 and the meshing portion 211, and making the transmission between the meshing portion 211 and the transmission wheel 300 smoother.

[0063] Taking the embodiment shown in Figure 5 as an example, the transmission wheel 300 includes a disc gear 300d, which includes a hard wheel 340 and a soft wheel 350. The hard wheel 340 and the soft wheel 350 are stacked together, and the teeth of the hard wheel 340 correspond one-to-one with the teeth of the soft wheel 350. The gear teeth 330 are composed of the hard teeth 341 of the hard wheel 340 and the corresponding soft teeth 351 of the soft wheel 350. The soft wheel 350 can be made of rubber, silicone, or other soft materials, while the hard wheel 340 can be made of other materials. Made of materials such as hard metal and hard plastic, during the transmission process between the disc gear 300d and the meshing part 211, each tooth 330 can first be meshed with the meshing part 211 by the soft tooth 351 of the soft wheel 350, and then the hard tooth 341 of the hard wheel 340 meshes with the meshing part 211 to transmit power. This reduces the impact between the tooth 330 and the meshing part 211, reduces the wear and noise between the tooth 330 and the meshing part 211, and makes the transmission between the meshing part 211 and the transmission wheel 300 smoother.

[0064] In the specific implementation process, the disc gear 300d can be equipped with one soft wheel 350. At this time, one hard wheel 340 can be set, or two hard wheels 340 can be set with the soft wheel 350 located between the two hard wheels 340. Of course, the disc gear 300d can also be equipped with more than two soft wheels 350. In this case, a hard wheel 340 is set between two adjacent soft wheels 350.

[0065] It is conceivable that in other embodiments, other methods may be used to make the gear teeth 330 at least partially elastic. For example, the drive wheel 300 may use a coating process to coat the hard portion of each gear tooth 330 with an elastic layer, which may be rubber, silicone or other soft rubber.

[0066] The screw connection between the lead screw 400 and the transmission component 500 usually has a certain size of thread clearance. When the transmission direction between the transmission component 500 and the lead screw 400 changes (i.e., the direction in which the transmission component 500 drives the lead screw 400 to move changes or the direction in which the lead screw 400 drives the transmission component 500 to rotate changes), the lead screw 400 will first move axially relative to the transmission component 500. This will cause a strong collision between the transmission thread on the lead screw 400 and the transmission thread in the transmission component 500, resulting in noise and easily causing wear on both the lead screw 400 and the transmission component 500.

[0067] In some embodiments, as shown in Figures 7 and 9, the transmission member 500 is provided with a clamping structure 530, which engages with the transmission thread of the lead screw 400 to restrict the axial movement of the lead screw 400 relative to the transmission member 500. This reduces the speed of the axial movement of the lead screw 400 relative to the transmission member 500 when the transmission direction between the transmission member 500 and the lead screw 400 changes, thereby reducing noise and wear and achieving a quiet operation.

[0068] Specifically, referring to Figures 7, 9, and 10, in some embodiments, the clamping structure 530 includes at least two elastic clamping portions 531. All the elastic clamping portions 531 are arranged circumferentially around the lead screw 400. Each elastic clamping portion 531 has an abutting portion 532 protruding towards the lead screw 400. Under the elastic force of the elastic clamping portion 531 itself, the abutting portion 532 and the transmission thread of the lead screw 400 can maintain abutting engagement. Thus, when the transmission direction between the transmission member 500 and the lead screw 400 changes, the speed at which the lead screw 400 moves axially relative to the transmission member 500 can be reduced. In addition, the clamping structure 530 can provide a certain amount of damping to the lead screw 400. If the power transmitted between the transmission member 500 and the lead screw 400 cannot overcome the damping, the clamping structure 530 can lock the lead screw 400. If the power transmitted between the transmission member 500 and the lead screw 400 can overcome the damping, the lead screw 400 can push the elastic clamping part 531 outward, and then the lead screw 400 and the transmission member 500 can transmit power.

[0069] Referring to Figures 7, 9 and 10, in some embodiments, the clamping structure 530 further includes an elastic ring 533, which is sleeved on all the elastic clamping parts 531 to increase the pressure of the elastic clamping parts 531 on the lead screw 400 and improve its service life.

[0070] Referring to Figures 7 and 9, in some embodiments, the abutment portion 532 is spiral-shaped, and the elastic pressing portion 531 may be provided with one abutment portion 532 or more abutment portions 532, thereby improving the restrictive effect of the elastic pressing portion 531 on the lead screw 400.

[0071] It should be noted that the above-mentioned clamping structure 530 can also be configured in other ways. For example, the clamping structure 530 includes a spring and a top post. The transmission component 500 has a mounting hole. The spring is installed in the mounting hole. One end of the top post is inserted into the mounting hole and abuts against the spring. The other end of the top post is inserted into the threaded groove of the lead screw 400 and abuts against the transmission thread of the lead screw 400.

[0072] Referring to Figure 11, according to some embodiments of the present invention, the motor 200 integrates a controller 900, and the controller 900 is equipped with a connector 910, which may include a USB port or a Type-C port, etc. Therefore, integrating the motor 200 and the controller 900 together facilitates electrical connection between the motor 200 and the controller 900. The controller 900 only needs to be electrically connected to the vehicle's control system using the connector 910, eliminating the need for a wiring harness between the motor 200 and the vehicle's control system, thus reducing costs.

[0073] Referring to Figure 11, specifically, the mounting housing 100 includes a main housing 100a and a bracket 100b. The transmission wheel 300 is rotatably mounted inside the main housing 100a. The bracket 100b is connected to the outside of the main housing 100a and is arranged parallel to the rotation axis of the transmission wheel 300. The housing of the motor 200 is equipped with a cover 220. The controller 900 is located inside the cover 220. The cover 220 is fixedly mounted on the side of the bracket 100b away from the main housing 100a. The cover 220 and the bracket 100b cooperate to enclose the controller 900. The output shaft 210 of the motor 200 is inserted from the bracket 100b into the main housing 100a. Thus, the meshing part 211 on the output shaft 210 can mesh with the transmission wheel 300 for transmission.

[0074] Of course, it is conceivable that in some embodiments, referring to FIG3, the independent controller 900 may be omitted, and the motor 200 may be directly electrically connected to the vehicle's control system via a wiring harness.

[0075] Referring to Figures 1 and 3, according to some embodiments of the present invention, the electric side-opening door actuator further includes a side-door connecting sleeve 700, with a waterproof sleeve 600 located inside the side-door connecting sleeve 700. The side-door connecting sleeve 700 is connected to the mounting housing 100, thus allowing the electric side-opening door actuator to be installed on the inner wall of the side door housing via the side-door connecting sleeve 700. The side-door connecting sleeve 700 increases the distance between the mounting point of the electric side-opening door actuator on the side door housing and the rotation center of the transmission component 500, thereby reducing the angle of swing of the lead screw 400 relative to the transmission wheel 300.

[0076] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above 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.

[0077] The present invention has been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the invention.

Claims

1. An electric side-opening door actuator, characterized in that, include: Mounting housing (100); The motor (200) is mounted in the mounting housing (100); A drive wheel (300) is rotatably mounted on the mounting shell (100). The drive wheel (300) is connected to the motor (200) for transmission. The drive wheel (300) has a mounting cavity (310) inside. The inner wall of the mounting cavity (310) has at least two transmission grooves (320). All the transmission grooves (320) are distributed around the rotation axis of the drive wheel (300). The bottom wall of the transmission groove (320) is part of a spherical surface. The side wall of the transmission groove (320) extends along the rotation axis of the drive wheel (300). A lead screw (400) is inserted into the mounting cavity (310); A transmission component (500) is sleeved on the lead screw (400) and screwed to the lead screw (400). The transmission component (500) is disposed in the mounting cavity (310). At least two transmission teeth (510) are protruding from the outer periphery of the transmission component (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 component (500) to rotate relative to the lead screw (400) through the cooperation between the side wall of the transmission groove (320) and the corresponding transmission tooth (510).

2. The electric side-opening door actuator according to claim 1, characterized in that, An elastic element is held 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 them is elastic, and the transmission element (500) can swing relative to the transmission wheel (300) along the bottom wall of the transmission groove (320).

3. The electric side-opening door actuator according to claim 2, characterized in that, The transmission tooth (510) includes two elastic portions (510a) and a support portion (510b) located between the two elastic portions (510a). The elastic portions (510a) abut against the corresponding transmission tooth (510), the elastic portions (510a) abut against the side wall of the corresponding transmission groove (320), and the outer side wall of the support portion (510b) fits against the bottom wall of the corresponding transmission groove (320).

4. The electric side-opening door actuator according to claim 2, characterized in that, The transmission gear (510) includes a hard tooth (510c) and a rubber coating layer (510d) covering the surface of the hard tooth (510c), the rubber coating layer (510d) being elastic.

5. An electric side-opening door actuator according to claim 1, characterized in that, The transmission tooth (510) has a movable gap with the side wall of the corresponding transmission groove (320) so that the transmission member (500) can swing relative to the transmission wheel (300) along the bottom wall of the transmission groove (320).

6. The electric side-opening door actuator according to claim 1, characterized in that, The transmission wheel (300) includes a transmission gear (300a) and a fixed sleeve (300b). The fixed sleeve (300b) is inserted into the transmission gear (300a). The mounting cavity (310) is formed by a first recess (311) provided in the fixed sleeve (300b) and a second recess (312) provided in the transmission gear (300a). The transmission groove (320) is formed by a first groove (321) provided in the fixed sleeve (300b) and a second groove (322) provided in the transmission gear (300a).

7. An electric side-opening door actuator according to claim 1, characterized in that, The transmission wheel (300) includes two mounting sleeves (300c) and a disc gear (300d). The two mounting sleeves (300c) are inserted into the two ends of the disc gear (300d) in a one-to-one correspondence. The mounting cavity (310) is formed by the two mounting sleeves (300c). The mounting sleeves (300c) are rotatably mounted on the mounting shell (100). The disc gear (300d) can drive the mounting sleeves (300c) to rotate. The disc gear (300d) is connected to the motor (200) in a transmission connection.

8. An electric side-opening door actuator according to claim 1, characterized in that, The output shaft (210) of the motor (200) is provided with a meshing part (211), and the transmission wheel (300) has teeth (330) for meshing and driving with the meshing part (211), and the teeth (330) are at least partially elastic.

9. An electric side-opening door actuator according to claim 1, characterized in that, The transmission component (500) is provided with a clamping structure (530), which engages with the transmission thread of the lead screw (400) to restrict the axial movement of the lead screw (400) relative to the transmission component (500).

10. An electric side-opening door actuator according to claim 1, characterized in that, The motor (200) integrates a controller (900), which is equipped with a connector (910).

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