Vehicle door driver and vehicle

Abstract

The utility model provides a vehicle door driver and a vehicle. The vehicle door driver comprises a driving device, a lead screw, a nut and an ejector rod. The driving device can output a rotating action and is provided with a rotating axis; the lead screw is connected to the driving device through a transmission assembly so that the driving device can drive the lead screw to rotate. The nut is arranged on the lead screw, and the nut moves in the axis direction of the lead screw through rotation of the lead screw; one end of the ejector rod is arranged on the nut, and the ejector rod can be in a retraction state and an extension state along with the movement of the nut in the axis direction of the screw rod; an included angle is formed between the rotating axis of the driving device and the axis of the lead screw, and the angle value of the included angle is larger than 0 degree and smaller than 90 degrees.

Description

Technical Field

[0001] This disclosure relates to a door actuator and a vehicle, belonging to the field of automotive parts technology. Background Technology

[0002] This section provides only background information relevant to this disclosure and is not necessarily prior art.

[0003] In existing technology, car doors generally have an external handle. After the user unlocks the vehicle, they can release the door lock by pulling the external handle, and then continue to pull the external handle to manually open the door.

[0004] With the development of technology, more and more car doors are opening and closing automatically. In this case, a door actuator can be installed on the car door, and the automatic opening and closing of the car door is achieved by providing opening and closing signals to the door actuator.

[0005] However, in some existing door actuators, the motor rotation axis is arranged perpendicular to the movement direction of the push rod. This makes it difficult to install the door actuator in a car door, as it requires a large amount of space. Utility Model Content

[0006] This disclosure provides a door actuator and a vehicle.

[0007] According to one aspect of this disclosure, a door actuator is provided, comprising:

[0008] A driving device, which is capable of outputting rotational action and has a rotation axis;

[0009] A lead screw, which is connected to the drive device via a transmission assembly, so that the drive device can drive the lead screw to rotate;

[0010] A nut, wherein the nut is disposed on the lead screw, and the rotation of the lead screw causes the nut to move along the axial direction of the lead screw; and

[0011] A push rod, one end of which is disposed on the lead screw nut, and the push rod can be in a retracted state and an extended state as the lead screw nut moves along the axial direction of the lead screw; wherein, the rotation axis of the drive device forms an angle with the axis of the lead screw, the angle being greater than 0° and less than 90°.

[0012] According to at least one embodiment of the door drive of this disclosure, the included angle value is greater than or equal to 70° and less than or equal to 80°.

[0013] A door drive according to at least one embodiment of the present disclosure further includes:

[0014] The housing assembly includes the drive device disposed on the housing assembly, and the lead screw is rotatably disposed on the housing assembly, thereby limiting the position of the lead screw in the axial direction.

[0015] A door drive according to at least one embodiment of the present disclosure further includes:

[0016] The mounting bracket has a through hole, and the other end of the top rod passes through the through hole, so that both ends of the top rod are located on both sides of the mounting bracket.

[0017] According to at least one embodiment of the door actuator of this disclosure, the housing assembly includes:

[0018] A first housing portion is fixedly connected to the mounting bracket;

[0019] A second housing portion, the second housing portion being formed as a hollow structure, and one end of the second housing portion being connected to the first housing portion; and

[0020] An end cap is disposed at the other end of the second housing portion; wherein one end of the lead screw is rotatably disposed on the mounting bracket, and the other end of the lead screw is rotatably disposed on the end cap.

[0021] According to at least one embodiment of the door actuator of the present disclosure, the second housing portion is used to guide the movement of the nut along the axial direction of the lead screw.

[0022] According to at least one embodiment of the door actuator of the present disclosure, a limiting member is provided on the push rod, the limiting member being used to cooperate with the first housing portion to limit the maximum extension length of the push rod; wherein, the surface of the limiting member that contacts the first housing portion is configured as an arc surface.

[0023] According to at least one embodiment of the door actuator of this disclosure, the arc surface of the limiting member is a cylindrical surface.

[0024] According to at least one embodiment of the door drive of the present disclosure, the first housing portion includes a blocking member, the contact surface between the blocking member and the limiting member being an arc surface.

[0025] According to at least one embodiment of the door actuator of this disclosure, the arc surface of the blocking member is a cylindrical surface.

[0026] According to at least one embodiment of the door drive of the present disclosure, a guide structure is formed inside the second housing portion, which is capable of guiding the movement of the nut.

[0027] According to at least one embodiment of the door actuator of this disclosure, the mounting bracket is connected to the mounting feature of the door by a fastening element.

[0028] According to at least one embodiment of the door drive of the present disclosure, the transmission assembly includes a worm and a worm wheel cooperating with the worm; wherein the worm is fixed to the output shaft of the drive device; the worm wheel is disposed on the lead screw so as to drive the lead screw to rotate by the rotation of the worm wheel.

[0029] According to at least one embodiment of the door actuator of this disclosure, the two ends of the worm gear are rotatably supported on the housing assembly by bearings.

[0030] According to at least one embodiment of the door drive of the present disclosure, a cover member is provided inside the housing assembly, and the worm gear is disposed within the cover member.

[0031] According to at least one embodiment of the door actuator of this disclosure, the covering member is also used to limit the position of the worm gear on the lead screw.

[0032] According to at least one embodiment of the door drive of the present disclosure, the cover member is formed with an opening, and the worm and worm wheel are drivenly connected at the opening.

[0033] According to at least one embodiment of the door actuator of this disclosure, the position of the bearing used to support the worm gear on the lead screw is restricted by a retaining ring or screw.

[0034] According to at least one embodiment of the door actuator of this disclosure, the worm gear includes a spur gear.

[0035] According to at least one embodiment of the door drive of the present disclosure, the drive device includes a motor, the motor includes a magnetic ring, and the position of the output shaft of the motor is detected by the magnetic ring.

[0036] According to at least one embodiment of the door actuator of this disclosure, one end of the push rod is connected to the nut via a ball joint.

[0037] According to another aspect of this disclosure, a vehicle is provided that includes the aforementioned door actuator. Attached Figure Description

[0038] The accompanying drawings illustrate exemplary embodiments of the present disclosure and, together with the description thereof, serve to explain the principles of the present disclosure. These drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this specification.

[0039] Figure 1 This is a schematic diagram of a door actuator according to one embodiment of the present disclosure.

[0040] Figure 2 This is a schematic diagram of a door actuator according to one embodiment of the present disclosure.

[0041] Figure 3 yes Figure 2 A structural diagram from another angle.

[0042] Figure 4 This is a schematic diagram of the structure of the second housing portion according to one embodiment of the present disclosure.

[0043] Figure 5 This is a schematic diagram of the structure of a blocking component according to one embodiment of the present disclosure.

[0044] Figure 6 This is a schematic diagram of the top rod according to one embodiment of the present disclosure.

[0045] Figure 7 This is a schematic diagram of a ball joint according to one embodiment of the present disclosure.

[0046] Figure 8 This is an exploded view of a portion of the structure of a ball joint according to one embodiment of the present disclosure.

[0047] The specific labels in the attached figures are as follows:

[0048] 100 Mounting bracket

[0049] 200 Housing Assembly

[0050] 210 First shell section

[0051] 211 Blocking component

[0052] 220 Second housing section

[0053] 221 Guide Structure

[0054] 230 end cap

[0055] 240 Covering components

[0056] 300 drive unit

[0057] 310 Plug-in Structure

[0058] 400 lead screw

[0059] 500 silk mother

[0060] 510 Guide Components

[0061] 520 Protrusion

[0062] 530 spherical parts

[0063] 540 stop component

[0064] 550 screws

[0065] 560 First Hemisphere Dips

[0066] 570 Second Hemisphere Dipper

[0067] 600 push rod

[0068] 610 Limiting component

[0069] 700 Transmission Components

[0070] 710 worm gear

[0071] 720 worm gear. Detailed Implementation

[0072] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the disclosure. Furthermore, it should be noted that, for ease of description, only the parts relevant to the present disclosure are shown in the accompanying drawings.

[0073] It should be noted that, where there is no conflict, the embodiments and features described in this disclosure can be combined with each other. The technical solutions of this disclosure will now be described in detail with reference to the accompanying drawings and embodiments.

[0074] Unless otherwise stated, the exemplary implementations / embodiments shown are to be understood as providing exemplary features of various details that provide ways in which the technical concepts of this disclosure can be implemented in practice. Therefore, unless otherwise stated, the features of various implementations / embodiments may be additionally combined, separated, interchanged and / or rearranged without departing from the technical concepts of this disclosure.

[0075] The use of crosshairs and / or shading in the accompanying drawings is generally used to clarify the boundaries between adjacent components. Thus, unless otherwise stated, the presence or absence of crosshairs or shading does not convey or indicate any preference or requirement for the specific material, material properties, dimensions, proportions, commonalities between the illustrated components, or any other characteristics, properties, etc., of the components. Furthermore, in the accompanying drawings, the dimensions and relative dimensions of components may be exaggerated for clarity and / or descriptive purposes. When exemplary embodiments can be implemented differently, a specific process sequence may be performed in a different order than that described. For example, two consecutively described processes may be performed substantially simultaneously or in the reverse order of their description. Furthermore, the same reference numerals denote the same components.

[0076] When a component is referred to as being "on" or "above" another component, "connected to," or "joined to" another component, the component may be directly on, directly connected to, or directly joined to the other component, or there may be intermediate components. However, when a component is referred to as being "directly on" another component, "directly connected to," or "directly joined to" another component, there are no intermediate components. Therefore, the term "connection" can refer to a physical connection, an electrical connection, etc., and may or may not have intermediate components.

[0077] For descriptive purposes, this disclosure may use spatial relative terms such as “below,” “under,” “below,” “down,” “above,” “above,” “higher,” and “side (e.g., in a “sidewall”)” to describe the relationship between one component and another component as shown in the accompanying drawings. In addition to the orientations depicted in the drawings, the spatial relative terms are also intended to encompass different orientations of the device during use, operation, and / or manufacture. For example, if the device in the drawings is flipped, a component described as “below” or “under” another component or feature would subsequently be positioned “above” said other component or feature. Thus, the exemplary term “below” can encompass both “above” and “below” orientations. Furthermore, the device may be otherwise positioned (e.g., rotated 90 degrees or in other orientations), thus interpreting the spatial relative descriptive terms used herein accordingly.

[0078] The terminology used herein is for the purpose of describing particular embodiments and is not intended to be limiting. As used herein, unless the context clearly indicates otherwise, the singular forms “a” and “the” are intended to include the plural forms as well. Furthermore, when the terms “comprising” and / or “including” and variations thereof are used in this specification, it indicates the presence of the stated features, integrals, steps, operations, parts, components, and / or groups thereof, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, parts, components, and / or groups thereof. It should also be noted that, as used herein, the terms “substantially,” “about,” and other similar terms are used as approximate terms rather than as terms of degree, thus explaining the inherent biases in measurements, calculated values, and / or provided values ​​that would be recognized by one of ordinary skill in the art.

[0079] Figure 1 This is a schematic diagram of a door actuator according to one embodiment of the present disclosure. Figure 2 This is a schematic diagram of a door actuator according to one embodiment of the present disclosure. Figure 3 yes Figure 2 A structural diagram from another angle. Figure 4This is a schematic diagram of the structure of the second housing portion according to one embodiment of the present disclosure. Figure 5 This is a schematic diagram of the structure of a blocking component according to one embodiment of the present disclosure. Figure 6 This is a schematic diagram of the top rod according to one embodiment of the present disclosure.

[0080] like Figures 1 to 6 As shown, the door actuator of this disclosure may include a mounting bracket 100, a housing assembly 200, a drive unit 300, a lead screw 400, a lead nut 500, and a push rod 600.

[0081] When in use, the door actuator disclosed herein can be fixed by mounting the bracket 100 to the door. Furthermore, the mounting bracket 100 can be fixedly connected to the door using fastening elements such as screws or anchors.

[0082] The housing assembly 200 is disposed on the mounting bracket 100. In one specific embodiment, the housing assembly 200 includes components such as a first housing portion 210, a second housing portion 220, and an end cap 230.

[0083] The first housing portion 210 is fixedly connected to the mounting bracket 100; in a preferred embodiment, the first housing portion 210 includes a first hole structure and a second hole structure, wherein the first hole structure is for the push rod 600 to pass through, and the second hole structure is for the lead rod 400 to pass through.

[0084] The second housing portion 220 is formed as a hollow structure, and one end of the second housing portion 220 is connected to the first housing portion 210; the end cap 230 is disposed at the other end of the second housing portion 220.

[0085] In other words, the external profile of the door drive of this disclosure can be formed by mounting bracket 100 and housing assembly 200.

[0086] In a preferred embodiment, a guide structure 221 is formed inside the second housing portion 220, which guides the movement of the nut 500. In other words, the guide structure 221 can suppress the rotation of the nut 500, so that when the lead screw 400 rotates inside the nut 500, the nut 500 can move along the axial direction of the lead screw 400.

[0087] In a preferred embodiment, the guide structure 221 includes two parallel plate components. Specifically, two parallel plate components are provided on the inner wall surface of the second housing portion 220, and the length direction (extension direction) of these two plate components is the same as the axial direction of the lead screw. In this case, a portion of the nut 500 (i.e., the guide component 510 of the nut 500) can be slidably disposed between these two plate components, thereby enabling the nut 500 to be guided by the guide structure 221.

[0088] More preferably, two guide structures 221 are provided, and these two guide structures 221 are respectively located on two opposing inner wall surfaces of the second housing portion 220. Of course, multiple guide structures 221 of this disclosure may also be provided, and these guide structures 221 may be arranged in parallel.

[0089] In this disclosure, a drive device 300 is disposed on the housing assembly 200, and the drive device 300 is capable of outputting rotational action, thereby having a rotation axis. In a specific embodiment, the drive device 300 can be a motor. The motor is preferably a DC motor, a geared motor, or a servo motor, etc. In particular, the motor may include a magnetic ring, and output a Hall signal through the magnetic ring to accurately determine the position of the motor's output shaft. Accordingly, the rotation axis of the drive device 300 is the axis of the motor's output shaft.

[0090] Specifically, the cover of the drive device 300 can be fixed to the first housing portion 210; and the drive device 300 can be located below the lead screw 400. Of course, the drive device 300 can also be located above the lead screw 400.

[0091] In this disclosure, the lead screw 400 is connected to the drive device 300 via a transmission assembly 700, enabling the drive device 300 to drive the lead screw 400 to rotate. Specifically, the transmission assembly 700 includes a worm 710 and a worm wheel 720 that cooperates with the worm 710; wherein the worm 710 is fixed to the output shaft of the drive device 300; that is, the rotation axis of the drive device 300 coincides with the rotation axis of the worm 710. The worm wheel 720 is disposed on the lead screw 400, so that the rotation of the worm wheel 720 drives the lead screw 400 to rotate.

[0092] In a preferred embodiment, the worm gear 720 can be implemented using a spur gear, thereby reducing the manufacturing cost of the worm gear 720.

[0093] Furthermore, both ends of the worm 710 are rotatably supported on the first housing portion 210 by bearings, thereby enabling the worm 710 to rotate at a high speed without significant energy loss. More preferably, the specific position of the bearing on the worm 710 can be limited by a retaining ring or a screw. Specifically, the retaining ring can be fixed to the worm 710, and the bearing can be prevented from moving along the axial direction of the worm 710 by limiting the inner ring of the bearing; the screw can be fixed to the first housing portion 210, and the bearing can be prevented from moving along the axial direction of the worm 710 by limiting the outer ring of the bearing.

[0094] In a preferred embodiment, the mounting bracket 100 is provided with a first support hole, and one end of the lead screw 400 is rotatably disposed in the first support hole of the mounting bracket 100. More preferably, a bearing or bushing is provided between one end of the lead screw 400 and the inner wall surface of the first support hole, thereby making the lead screw 400 rotate more smoothly.

[0095] In addition, a second support hole is provided on the end cap 230, and the other end of the lead screw 400 is rotatably disposed in the second support hole of the end cap 230. More preferably, a bearing or bushing is provided between the other end of the lead screw 400 and the inner wall surface of the second support hole, thereby making the lead screw 400 rotate more smoothly.

[0096] Furthermore, the lead screw 400 is positioned along its axial direction by the mounting bracket 100 and the housing assembly 200.

[0097] The first housing portion 210 has a cover member 240 inside, which is fixedly disposed to the first housing portion 210. Correspondingly, the worm gear 720 can be disposed within the cover member 240, and the cover member 240 restricts the position of the worm gear 720 on the lead screw 400. Specifically, one axial end of the worm gear 720 can be disposed in a bearing bush position within the first support hole, and the other axial end of the worm gear 720 can be restricted in position by the cover member 240.

[0098] Furthermore, the cover member 240 has an opening at which the worm 710 and the worm wheel 720 are connected for transmission. Thus, the worm 710 and the worm wheel 720 of this disclosure can be placed in a generally sealed environment, which improves the transmission effect and service life of the transmission assembly.

[0099] In this disclosure, the rotation axis of the drive device 300 forms an angle with the axis of the lead screw 400, the angle being greater than 0° and less than 90°; more preferably, the angle is greater than or equal to 70° and less than or equal to 80°. Thus, in the door actuator of this disclosure, the worm gear 710 and the lead screw 400 are arranged at a certain angle, allowing the tail of the drive device 300 to be positioned towards its original mounting surface, thereby reducing the space occupied by the entire door actuator and increasing matching performance. In a preferred embodiment, the tail of the drive device 300 is inclined towards the end cap 230 of the housing assembly 200 to facilitate the arrangement of the door actuator.

[0100] The nut 500 is mounted on the lead screw 400, and the nut 500 moves along the axis of the lead screw 400 by rotating the lead screw 400; one end of the push rod 600 is mounted on the nut 500, and the push rod 600 can be in a retracted state and an extended state as the nut 500 moves along the axis of the lead screw 400.

[0101] Specifically, the mounting bracket 100 has a through hole, and the other end of the push rod 600 passes through the through hole, so that both ends of the push rod 600 are located on both sides of the mounting bracket 100. Thus, when the door actuator of this disclosure is in use, the other end of the push rod 600 can be hinged to the vehicle body or hinged to the vehicle body through a support. Accordingly, when the push rod 600 is in the extended state, the door can be in the open state, and when the push rod 600 is in the retracted state, the door can be in the closed state.

[0102] In a preferred embodiment, a limiting member 610 is provided on the push rod 600. The limiting member 610 is used to cooperate with the first housing part 210 to limit the maximum extension length of the push rod 600. The surface of the limiting member 610 that contacts the first housing part 210 is set as an arc surface. The first housing part 210 includes a blocking member 211, and the contact surface between the blocking member 211 and the limiting member 610 is an arc surface.

[0103] More preferably, the arc surface of the limiting member 610 is a cylindrical surface, and the center line of the cylindrical surface is perpendicular or substantially perpendicular to the plane in which the push rod 600 moves. Similarly, the arc surface of the blocking member 211 is also a cylindrical surface, and the center line of the cylindrical surface is perpendicular or substantially perpendicular to the plane in which the push rod 600 moves. Moreover, the cylindrical surfaces of the limiting member 610 and the blocking member 211 have approximately the same diameter. Therefore, when the limiting member 610 contacts the blocking member 211, regardless of the orientation of the push rod 600, there can be a large contact area between the limiting member 610 and the blocking member 211, thereby preventing damage to the limiting member 610 and the blocking member 211.

[0104] Figure 7This is a schematic diagram of a ball joint according to one embodiment of the present disclosure. Figure 8 This is an exploded view of a portion of the structure of a ball joint according to one embodiment of the present disclosure.

[0105] like Figure 7 and Figure 8 As shown, one end of the push rod 600 is connected to the nut 500 via a ball joint. Specifically, the upper end of the nut 500 of this disclosure has a protrusion 520; wherein, the protrusion 520 can be formed in a cylindrical shape. And a threaded hole is formed at the center of the protrusion 520.

[0106] The spherical member 530 has a central hole. In a preferred embodiment, the central hole can be a cylindrical hole, so that the protrusion 520 can be inserted into the central hole of the spherical member 530, and the upper end of the protrusion 520 is lower than the upper end of the spherical member 530.

[0107] At least a portion of the stop 540 is inserted into the central hole of the spherical member 530, and an outer flange is formed at the upper end of the stop 540, the diameter of which is larger than the inner diameter of the upper end of the spherical member 530, so that the stop 540 can press the spherical member 530 tightly. Specifically, a screw 550 can pass through the stop 540 and the spherical member 530 and be screwed into the threaded hole of the protrusion 520 to fix the stop 540 and the spherical member 530 to the nut 500.

[0108] In this disclosure, the outer peripheral surface of the spherical member 530 is formed as a spherical surface, thereby enabling the spherical member 530 to be formed as a spherical head. Correspondingly, the outer surface of the spherical member 530 is provided with a first hemispherical recess 560 and a second hemispherical recess 570; wherein the first hemispherical recess 560 and the second hemispherical recess 570 form a spherical recess structure as a whole, that is, the inner surfaces of the first hemispherical recess 560 and the second hemispherical recess 570 are both formed as spherical surfaces. Moreover, at least a portion of the outer surface of the first hemispherical recess 560 and the second hemispherical recess 570 is formed as a cylindrical surface, and a mounting hole is provided at one end of the push rod 600, with at least a portion of the first hemispherical recess 560 and the second hemispherical recess 570 located within the mounting hole.

[0109] In a preferred embodiment, the housing of the drive unit 300 may include a plug-in structure 310 for connecting the drive unit 300 to the vehicle controller. In this disclosure, the opening direction of the plug-in structure 310 is parallel to the lead screw 400 or perpendicular to the rotation axis of the drive unit 300, thereby facilitating the insertion or removal of a connector into or from the plug-in structure.

[0110] According to another aspect of this disclosure, a vehicle is provided that includes the aforementioned door actuator.

[0111] In the description of this specification, the references to terms such as "one embodiment / mode," "some embodiments / modes," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment / mode or example is included in at least one embodiment / mode or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment / mode or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments / modes or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate the different embodiments / modes or examples described in this specification, as well as the features of different embodiments / modes or examples.

[0112] Furthermore, 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0113] Those skilled in the art should understand that the above embodiments are merely for illustrating the present disclosure and are not intended to limit the scope of the disclosure. Those skilled in the art can make other changes or modifications based on the above disclosure, and these changes or modifications still fall within the scope of the present disclosure.

Claims

1. A door actuator, characterized in that, include: A driving device, which is capable of outputting rotational action and has a rotation axis; A lead screw, which is connected to the drive device via a transmission assembly, so that the drive device can drive the lead screw to rotate; A lead screw nut is disposed on the lead screw, and the lead screw rotates to move the lead screw along the axis of the lead screw. as well as A push rod, one end of which is disposed on the lead screw nut, and the push rod can be in a retracted state and an extended state as the lead screw nut moves along the axial direction of the lead screw; wherein, the rotation axis of the drive device forms an angle with the axis of the lead screw, the angle being greater than 0° and less than 90°.

2. The door actuator according to claim 1, characterized in that, The included angle is greater than or equal to 70° and less than or equal to 80°.

3. The door actuator according to claim 1, characterized in that, Also includes: The housing assembly includes the drive device disposed on the housing assembly, and the lead screw is rotatably disposed on the housing assembly, thereby limiting the position of the lead screw in the axial direction.

4. The door actuator according to claim 3, characterized in that, Also includes: The mounting bracket has a through hole, and the other end of the top rod passes through the through hole, so that both ends of the top rod are located on both sides of the mounting bracket.

5. The door actuator according to claim 4, characterized in that, The housing assembly includes: A first housing portion is fixedly connected to the mounting bracket; A second housing portion, the second housing portion being formed as a hollow structure, and one end of the second housing portion being connected to the first housing portion; and An end cap is disposed at the other end of the second housing portion; wherein one end of the lead screw is rotatably disposed on the mounting bracket, and the other end of the lead screw is rotatably disposed on the end cap.

6. The door actuator according to claim 5, characterized in that, The second housing portion is used to guide the movement of the nut along the axial direction of the lead screw.

7. The door actuator according to claim 5, characterized in that, The top rod is provided with a limiting component, which is used to cooperate with the first housing part to limit the maximum extension length of the top rod; wherein, the surface of the limiting component that contacts the first housing part is set as an arc surface.

8. The door actuator according to claim 7, characterized in that, The curved surface of the limiting component is a cylindrical surface.

9. The door actuator according to claim 7, characterized in that, The first housing portion includes a blocking component, and the contact surface between the blocking component and the limiting component is an arc surface.

10. The door actuator according to claim 9, characterized in that, The arc surface of the blocking component is a cylindrical surface.

11. The door actuator according to claim 5, characterized in that, The interior of the second housing portion has a guide structure that guides the movement of the nut.

12. The door actuator according to claim 4, characterized in that, The mounting bracket is connected to the mounting features of the door via fastening elements.

13. The door actuator according to claim 1, characterized in that, The transmission assembly includes a worm and a worm wheel that cooperates with the worm; wherein the worm is fixed to the output shaft of the drive device; the worm wheel is disposed on the lead screw so as to drive the lead screw to rotate through the rotation of the worm wheel.

14. The door actuator according to claim 13, characterized in that, The two ends of the worm are rotatably supported on the housing assembly by bearings.

15. The door actuator according to claim 14, characterized in that, The housing assembly has a cover component inside, and the worm gear is disposed inside the cover component.

16. The door actuator according to claim 15, characterized in that, The covering component is also used to limit the position of the worm gear on the lead screw.

17. The door actuator according to claim 15, characterized in that, The covering component has an opening, and the worm and worm wheel are connected in a transmission manner at the opening.

18. The door actuator according to claim 14, characterized in that, The position of the bearing that supports the worm gear on the lead screw is restricted by a retaining ring or screw.

19. The door actuator according to claim 13, characterized in that, The worm gear includes a spur gear.

20. The door actuator according to claim 1, characterized in that, The drive device includes a motor, the motor includes a magnetic ring, and the position of the motor's output shaft is detected by the magnetic ring.

21. The door actuator according to claim 1, characterized in that, One end of the push rod is connected to the nut via a ball joint.

22. A vehicle, characterized in that, Includes the door actuator according to any one of claims 1-21.

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