Automobile and side opening door driving device thereof

Abstract

The utility model discloses an automobile and a side opening door driving device thereof, which comprise a driving structure, a shell component comprising a guide shell, an automobile door mounting component, an execution component, a screw rod component rotationally arranged in the shell component, a push rod component movably arranged in the shell component and an automobile body mounting bracket, the lead screw assembly comprises a lead screw and a lead screw nut matched with the lead screw. The driving structure is connected with the lead screw and can drive the lead screw to rotate. The lead screw nut is provided with a guide structure in guide fit with the guide shell, so that the lead screw nut moves in the extending direction of the lead screw in the rotating process of the lead screw. The push rod assembly comprises a push rod connected with the vehicle body mounting bracket and a joint ball connected with the push rod and the screw rod nut, and the screw rod nut is provided with a joint ball socket; under the state that the push rod and the lead screw form a first included angle, the joint ball can be loaded in and moved out relative to the joint ball socket; when the push rod and the lead screw form a second included angle, the joint ball located in the joint ball socket is limited in the joint ball socket.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile equipment, in particular to an automobile and a side door driving device thereof. Background Art

[0002] At present, among the electric side door actuators mass-produced on the market, the push rod type is one of the mainstream side door actuators, that is, one end of the push rod is fixedly connected to the car body, and the other end is hinged to the lead screw nut. The lead screw is arranged in the mechanism housing for rotation, and the spiral transmission is realized by driving the lead screw, and the lateral displacement of the lead screw nut and the hinged push rod is used to realize the opening and closing of the car door.

[0003] In a push-rod door actuator, the drive motor and transmission components (such as the lead screw and push rod) can be arranged in parallel, reducing the overall thickness of the mechanism (generally within 40mm), making it a key implementation solution for electric side door actuators. In push-rod electric side door actuators, the connection between the push rod assembly and the lead screw nut requires a ball joint to accommodate the push rod's swing during door opening and closing. However, this ball joint connection also requires consideration of ball head fallout and position limits after the ball is installed.

[0004] Therefore, how to facilitate the connection between the push rod assembly and the screw nut is a problem that needs to be solved urgently by those skilled in the art. Utility Model Content

[0005] In view of this, the present invention provides a side-opening door driving device, which facilitates the connection between the push rod assembly and the screw nut. The present invention also provides a car having the side-opening door driving device.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A side door driving device for driving a vehicle door to open and close relative to a vehicle body, comprising:

[0008] Drive structure;

[0009] A housing assembly, the housing assembly being used for fixed connection with the vehicle door; the housing assembly comprising a guide housing;

[0010] A vehicle door mounting assembly, the vehicle door mounting assembly being used to connect the vehicle door and the housing assembly;

[0011] An actuator assembly, the actuator assembly comprising a screw assembly rotatably arranged in the housing assembly, a push rod assembly movably arranged in the housing assembly and a body mounting bracket for fixedly connected to the body, the screw assembly comprising a screw and a screw nut cooperating therewith, the driving structure being connected to the screw and capable of driving the screw to rotate; the screw nut having a guide structure cooperating with the guide housing, so that the screw nut displaces along the extension direction of the screw during the rotation of the screw; the push rod assembly comprising a push rod connected to the body mounting bracket and a joint ball connecting the push rod and the screw nut, the screw nut having a joint ball socket;

[0012] Wherein, when the push rod and the screw rod form a first angle, the joint ball can be installed in and removed from the joint ball socket;

[0013] When the push rod and the screw rod form a second angle, the joint ball located in the joint ball socket is confined in the joint ball socket.

[0014] Optionally, in the above-mentioned side-opening door driving device, the joint ball has a joint ball spherical surface and a joint ball plane;

[0015] The joint ball socket comprises a spherical socket surface, a socket arc surface forming an opening of the spherical socket surface, and a socket plane;

[0016] When the push rod and the screw rod form a first angle, the spherical surface of the joint ball corresponds to the arc surface of the ball socket, the plane of the joint ball corresponds to the plane of the ball socket, and the joint ball can enter the joint ball socket through the opening of the spherical socket surface and contact the spherical socket surface;

[0017] When the push rod and the screw rod form a second included angle, the joint ball cannot enter or exit the joint ball socket through the opening of the spherical socket surface.

[0018] Optionally, in the above-mentioned side-opening door driving device, the ball socket arc surface includes a first arc surface and a second arc surface, the ball socket plane includes a first plane and a second plane, and the first arc surface, the first plane, the second arc surface and the second plane are arranged in sequence and surround the opening of the spherical socket surface;

[0019] There are two joint ball planes and they are symmetrically arranged;

[0020] The distance between the two joint ball planes is D1, the distance between the first plane and the second plane is D2, the diameter of the joint ball is D3, the maximum distance between the first arc surface and the second arc surface is D4, and the ball diameter of the spherical socket surface is D5;

[0021] Among them, D1 <D2<D3≤D4≤D5。

[0022] Optionally, in the above-mentioned side door driving device, the first angle is 90°; and / or the second angle is 0°.

[0023] Optionally, in the above-mentioned side-opening door driving device, the guide structure includes: a first guide surface located at the top of the screw nut; a second guide surface and a third guide surface respectively located on both sides of the screw nut;

[0024] The guide housing includes: a fourth guide surface matched with the first guide surface, a fifth guide surface matched with the second guide surface, and a sixth guide surface matched with the third guide surface.

[0025] Optionally, in the above-mentioned side-opening door drive device, the screw nut has a clearance fitting surface that is clearance-fitted with the guide housing, and an elastic block is provided between the clearance fitting surface of the screw nut and the guide housing, and the elastic block abuts between the screw nut and the guide housing.

[0026] Optionally, in the above-mentioned side-opening door drive device, the screw nut is fixedly connected to the elastic block and contacts the guide housing, so that the elastic block and the guide housing form a friction pair and provide friction damping force to the elastic block.

[0027] Optionally, in the above-mentioned side-opening door driving device, the contact surface of the elastic block used to contact the guide shell is a smooth surface or a friction surface with a concave-convex structure.

[0028] Optionally, in the above-mentioned side-opening door driving device, the number of the elastic blocks is at least two and they are symmetrically arranged relative to the center line of the screw nut.

[0029] The present utility model also provides an automobile, comprising a vehicle door, a vehicle body and a side-door driving device, characterized in that the side-door driving device is any one of the side-door driving devices described above.

[0030] It can be seen from the above technical solution that the side-opening door drive device provided by the present invention has a shell assembly that is fixedly connected to the car door through the car door mounting assembly, a screw assembly that is rotatably arranged in the shell assembly, and a push rod assembly that is movably arranged in the shell assembly. In the process of driving the car door to open and close relative to the car body, the driving structure is started, so that the screw rotates and drives the screw nut to move along the extension direction of the screw. Since the joint ball connects the push rod and the screw nut, the push rod is extended and retracted from the shell assembly to achieve the movement of the car door relative to the car body, completing the opening and closing operation of the car door relative to the car body. In the process of the joint ball connecting the push rod and the screw nut, the joint ball is fixedly connected to the push rod, and the screw nut has a joint ball socket that can be connected to the joint ball. In the state where the push rod and the screw rod are at a first angle, the joint ball can be installed and removed relative to the joint ball socket; in the state where the push rod and the screw rod are at a second angle, the joint ball located in the joint ball socket is confined in the joint ball socket. That is, in the process of connecting the push rod and the screw nut, it is only necessary to make the push rod and the screw at a first angle and to install the joint ball into the joint ball socket. Through the relative rotation of the push rod and the screw, the push rod and the screw are made to have a second angle, thereby limiting the joint ball from being separated from the joint ball socket, so as to facilitate the connection of the push rod assembly and the screw nut.

[0031] The present invention further provides an automobile comprising a door, a vehicle body, and a side-door drive device, wherein the side-door drive device is any of the above-described side-door drive devices. Since the above-described side-door drive device has the above-described technical effects, vehicles incorporating the above-described side-door drive device should also have the same technical effects, and thus will not be described in detail here, as all such devices fall within the scope of protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0033] Figure 1 A schematic diagram of the three-dimensional structure of a side-opening door driving device provided in an embodiment of the utility model;

[0034] Figure 2 A schematic diagram of the main structure of a side-opening door driving device provided by an embodiment of the present utility model;

[0035] Figure 3 For the Figure 2 Schematic diagram of the cross section of the AA surface;

[0036] Figure 4 A schematic structural diagram of a guide housing provided in an embodiment of the present utility model;

[0037] Figure 5 A schematic diagram of the main structure of the screw nut provided in an embodiment of the utility model;

[0038] Figure 6 A schematic diagram of a first three-dimensional structure of a screw nut provided in an embodiment of the present utility model;

[0039] Figure 7 A second three-dimensional structural diagram of a screw nut provided in an embodiment of the present utility model;

[0040] Figure 8 This is a schematic structural diagram of a push rod assembly provided in an embodiment of the present utility model. DETAILED DESCRIPTION

[0041] The utility model discloses a side-opening door driving device, which is convenient for connecting a push rod assembly with a screw nut. The utility model also provides a car with the side-opening door driving device.

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0043] like Figure 1-8 As shown, an embodiment of the present invention provides a side-opening door driving device for driving a vehicle door to open and close relative to a vehicle body, including a driving structure, a housing assembly 300 , a vehicle door mounting assembly 400 and an actuator assembly 500 . The housing assembly 300 is used to be fixedly connected to the vehicle door; the housing assembly 300 includes a guide housing 330; the vehicle door mounting assembly 400 is used to connect the vehicle door and the housing assembly 300; the actuator assembly 500 includes a screw assembly 510 rotatably arranged in the housing assembly 300, a push rod assembly 520 movably arranged in the housing assembly 300 and a vehicle body mounting bracket 530 for being fixedly connected to the vehicle body, the screw assembly 510 includes a screw 512 and a screw nut 511 cooperating therewith, the driving structure is connected to the screw 512 and can drive the screw 512 to rotate; the screw nut 511 has a guide structure that cooperates with the guide housing 330, so that the screw nut 511 moves along the extension direction of the screw 512 during the rotation of the screw 512; the push rod assembly 520 includes a push rod 521 connected to the vehicle body mounting bracket 530 and a joint ball 524 connecting the push rod 521 and the screw nut 511, and the screw nut 511 has a joint ball socket;

[0044] In the state where the push rod 521 and the screw rod 512 form a first angle, the joint ball 524 can be installed in and removed from the joint ball socket;

[0045] When the push rod 521 and the screw rod 512 form a second included angle, the joint ball 524 located in the joint ball socket is confined in the joint ball socket.

[0046] The side-opening door drive device provided by the embodiment of the present invention has a housing assembly 300 that is fixedly connected to the vehicle door via the vehicle door mounting assembly 400, a screw assembly 510 that is rotatably disposed within the housing assembly 300, and a push rod assembly 520 that is movably disposed within the housing assembly 300. During the process of driving the vehicle door to open and close relative to the vehicle body, the drive structure is activated, causing the screw 512 to rotate and drive the screw nut 511 to move along the extension direction of the screw 512. Since the joint ball 524 connects the push rod 521 and the screw nut 511, the push rod 521 extends and retracts from the housing assembly 300, thereby achieving movement of the vehicle door relative to the vehicle body and completing the opening and closing operation of the vehicle door relative to the vehicle body. During the process of the joint ball 524 connecting the push rod 521 and the screw nut 511, the joint ball 524 is fixedly connected to the push rod 521, and the screw nut 511 has a joint ball socket that can be connected to the joint ball 524. When the push rod 521 and the screw rod 512 form a first angle, the joint ball 524 can be installed in and removed from the joint ball socket. When the push rod 521 and the screw rod 512 form a second angle, the joint ball 524 located in the joint ball socket is restricted in the joint ball socket. That is, during the connection between the push rod 521 and the screw nut 511, it is only necessary to make the push rod 521 and the screw rod 512 form the first angle and install the joint ball 524 in the joint ball socket. By relative rotation of the push rod 521 and the screw rod 512, the push rod 521 and the screw rod 512 form the second angle, thereby restricting the joint ball 524 from being disengaged from the joint ball socket, thereby facilitating the connection between the push rod assembly and the screw nut.

[0047] It is understood that the second angle between push rod 521 and screw rod 512 represents the normal operating state of the side-opening door drive device, which is different from the first angle. This arrangement effectively prevents the push rod assembly from separating from the screw rod nut (i.e., the ball head falling off) during normal operation of the side-opening door drive device, and facilitates the position-limiting operation of the joint ball 524.

[0048] Furthermore, the joint ball 524 has a joint ball surface 5241 and a joint ball plane 5242; the joint ball socket includes a spherical socket surface 5116 and a socket arc surface and a socket plane forming an opening of the spherical socket surface 5116; when the push rod 521 and the screw rod 512 are at a first angle, the joint ball spherical surface 5241 corresponds to the socket arc surface, and the joint ball plane 5242 corresponds to the socket plane, and the joint ball 524 can enter the joint ball socket from the opening of the spherical socket surface 5116 and contact the spherical socket surface 5116; when the push rod 521 and the screw rod 512 are at a second angle, the joint ball 524 cannot enter or exit the joint ball socket from the opening of the spherical socket surface 5116.

[0049] Of course, the opening of the spherical socket surface 5116 can also be made into an elliptical or other non-circular shape, and the spherical surface 5241 of the joint ball matches the opening of the spherical socket surface 5116, so that the push rod 521 and the screw rod 512 form a first angle, the spherical surface 5241 of the joint ball can pass through the opening of the spherical socket surface 5116, and the push rod 521 and the screw rod 512 form a second angle, the spherical surface 5241 of the joint ball cannot pass through the opening of the spherical socket surface 5116.

[0050] For the convenience of connection, the ball and socket arc surface includes a first arc surface 5114 and a second arc surface 5117, and the ball and socket plane includes a first plane 5115 and a second plane 5118. The first arc surface 5114, the first plane 5115, the second arc surface 5117 and the second plane 5118 are arranged in sequence and surround the opening of the spherical socket surface 5116; the number of joint ball planes 5242 is two and they are symmetrically arranged; the distance between the two joint ball planes 5242 is D1, the distance between the first plane 5115 and the second plane 5118 is D2, the diameter of the joint ball 524 is D3, the maximum distance between the first arc surface 5114 and the second arc surface 5117 is D4, and the ball diameter of the spherical socket surface 5116 is D5, where D1 <D2<D3≤D4≤D5。

[0051] Of course, only one plane may be provided, that is, only the first plane 5115 is included, and the number of the joint ball plane 5242 is also one. The ball and socket plane may also include at least three planes, and the number of the joint ball plane 5242 is also matched thereto.

[0052] The joint ball 524 is fixedly connected to the push rod 521 through the collar 523. Of course, the joint ball 524 and the push rod 521 can also be riveted, welded or integrally formed.

[0053] Preferably, the first angle is 90°; and / or the second angle is 0°.

[0054] That is, under the normal working state of the side door driving device, the push rod 521 is relatively parallel to the screw rod 512. Under the state that the push rod 521 is connected to the screw rod 512, the push rod 521 is perpendicular to the screw rod 512.

[0055] In order to improve the sliding stability of the screw nut 511, the guide structure includes: a first guide surface 5111 located at the top of the screw nut 511; a second guide surface 5112 and a third guide surface 5113 located on both sides of the screw nut 511 respectively; the guide housing 330 includes: a fourth guide surface 331 cooperating with the first guide surface 5111, a fifth guide surface 332 cooperating with the second guide surface 5112 and a sixth guide surface 333 cooperating with the third guide surface 5113.

[0056] In order to reduce the shaking of the push rod 521, the screw nut 511 has a clearance fitting surface with the guide housing 330, and an elastic block is provided between the clearance fitting surface of the screw nut 511 and the guide housing 330, and the elastic block abuts between the screw nut 511 and the guide housing 330.

[0057] Since there is an elastic block between the clearance fitting surface of the screw nut 511 and the guide housing 330, and the elastic block abuts between the screw nut 511 and the guide housing 330, the elastic block provides elastic support between the screw nut 511 and the guide housing 330, thereby improving the stability of the screw nut 511, isolating the screw nut 511 from the shaking factors that may be caused by gaps in other structures (such as gear boxes and screw thread side clearances), and then achieving the effect of isolation from the push rod 521, thereby minimizing the shaking of the push rod 521.

[0058] In this embodiment, the drive structure includes a drive assembly 100 and a transmission assembly 200, wherein the drive assembly 100 has a drive end; the input end of the transmission assembly 200 is connected to the drive end of the drive assembly 100, and the output end of the transmission assembly 200 is connected to the screw 512. Specifically, the drive assembly 100 may include a drive motor, and the transmission assembly 200 may be a gearbox including components such as a transmission gear set.

[0059] In a specific embodiment, the housing assembly 300 also includes a first end housing 310 located at one end of the guide housing 330. The first end housing 310 connects the guide housing 330 and the transmission assembly 200. One end of the screw rod 512 is rotatably disposed on the first end housing 310 through a bearing 320.

[0060] The door mounting assembly 400 also includes a second end shell 410, a third end shell 420 and a door mounting bolt 430. The second end shell 410 and the third end shell 420 are located at the other end of the guide shell 330. The second end shell 410 and the third end shell 420 are cooperatively connected, and the third end shell 420 is fixedly connected to the door through the door mounting bolt 430.

[0061] The other end of the screw rod 512 is rotatably mounted on the second end housing 410 and is axially positioned and / or limited by components such as a screw rod support and a shaft retaining ring. The push rod 521 is movably connected to the vehicle body mounting bracket 530 via components such as a bushing and a stepped pin. The push rod 521 is hingedly connected to the screw nut 511 via a ball joint 524.

[0062] To provide holding force when the door is suspended, the screw nut 511 is fixedly connected to the elastic block and contacts the guide housing 330, forming a friction pair with the guide housing 330 and providing frictional damping force to the elastic block. In other words, the friction generated by the elastic block on the screw nut 511 as it moves provides holding force after the door is opened to a certain angle, eliminating the need for response time. Furthermore, the elastic restoring force of the elastic block can be adjusted by adjusting its material and dimensions, allowing for customization based on the customer's varying holding force requirements.

[0063] In order to improve friction, the contact surface of the elastic block for contacting the guide housing 330 is a friction surface with a concave-convex structure. The concave-convex structure on the friction surface can be a cross groove or a matrix convex point structure.

[0064] The contact surface of the elastic block for contacting the guide housing 330 may also be a smooth surface.

[0065] In this embodiment, the friction surface is an arc-shaped surface, and it convexes in a direction away from the screw nut 511 .

[0066] To extend its service life, the elastic block includes an inner and outer structure. The outer structure wraps around the inner structure and is used to contact the screw nut 511 and / or guide housing 330. The inner structure has a lower hardness than the outer structure. This arrangement allows the friction surface to compress and deform toward the interior of the elastic block, ensuring that the elastic restoring force effectively acts on the screw nut 511 and / or guide housing 330 while extending its service life.

[0067] In the side-opening door driving device provided by the embodiment of the present invention, the inner layer structure and the outer layer structure are assembled relative to each other. That is, the inner layer structure and the outer layer structure are processed separately and then assembled to form the elastic block.

[0068] The inner layer structure and the outer layer structure may also be formed integrally, for example, by injection molding (two-color injection molding) or the like.

[0069] To ensure the sliding stability of the screw nut 511, there are at least two elastic blocks, which are symmetrically arranged relative to the centerline of the screw nut 511. In this embodiment, the number of elastic blocks is preferably set to two. Of course, the number of elastic blocks can also be set to another number, or they can be arranged in a certain pattern along the outer circumference of the screw nut 511.

[0070] In order to facilitate assembly, a positioning structure or a clamping structure is provided between the elastic block and the screw nut 511 .

[0071] Specifically, the elastic block and the screw nut 511 can be connected by a concave-convex fitting structure. That is, the elastic block has an inner side surface facing the screw nut 511, and the inner side surface is concave-convex fitted with the clearance fitting surface.

[0072] Of course, the elastic block and the screw nut 511 can also be connected by gluing.

[0073] The present invention further provides an automobile comprising a door, a vehicle body, and a side-door drive device, wherein the side-door drive device is any of the above-described side-door drive devices. Since the above-described side-door drive device has the above-described technical effects, an automobile incorporating the above-described side-door drive device should also have the same technical effects, and thus will not be described in detail here, as all of them are within the scope of protection.

[0074] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0075] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A side door driving device for driving a vehicle door to open and close relative to the vehicle body, characterized in that: include: Drive structure; A housing assembly (300), the housing assembly (300) being used for fixed connection with the vehicle door; the housing assembly (300) comprising a guide housing (330); A vehicle door installation assembly (400), the vehicle door installation assembly (400) being used to connect the vehicle door and the housing assembly (300); An actuator assembly (500) comprising a screw assembly (510) rotatably disposed within the housing assembly (300), a push rod assembly (520) movably disposed within the housing assembly (300), and a vehicle body mounting bracket (530) for fixed connection to the vehicle body, wherein the screw assembly (510) comprises a screw (512) and a screw nut (511) mating therewith, and wherein the driving structure is connected to the screw (512) and is capable of driving the screw (512) to rotate. The screw nut (511) has a guide structure that cooperates with the guide housing (330) to guide the screw nut (511), so that the screw nut (511) is displaced along the extension direction of the screw (512) during the rotation of the screw (512); the push rod assembly (520) includes a push rod (521) connected to the vehicle body mounting bracket (530) and a joint ball (524) connecting the push rod (521) and the screw nut (511), and the screw nut (511) has a joint ball socket; Wherein, when the push rod (521) and the screw rod (512) are at a first angle, the joint ball (524) can be installed in and removed from the joint ball socket; When the push rod (521) and the screw rod (512) are at a second angle, the joint ball (524) located in the joint ball socket is confined within the joint ball socket.

2. The side door driving device according to claim 1, characterized in that: The joint ball (524) has a joint ball spherical surface (5241) and a joint ball plane (5242); The joint ball socket comprises a spherical socket surface (5116), a socket arc surface and a socket plane forming an opening of the spherical socket surface (5116); When the push rod (521) and the screw rod (512) are at a first angle, the joint ball surface (5241) corresponds to the arc surface of the ball socket, the joint ball plane (5242) corresponds to the ball socket plane, and the joint ball (524) can enter the joint ball socket through the opening of the spherical socket surface (5116) and contact the spherical socket surface (5116); When the push rod (521) and the screw rod (512) are at a second angle, the joint ball (524) cannot enter or exit the joint ball socket through the opening of the spherical socket surface (5116).

3. The side door driving device according to claim 2, characterized in that: The ball socket arc surface includes a first arc surface (5114) and a second arc surface (5117); the ball socket plane includes a first plane (5115) and a second plane (5118); the first arc surface (5114), the first plane (5115), the second arc surface (5117) and the second plane (5118) are arranged in sequence and surround the opening of the spherical socket surface (5116); The number of the joint ball planes (5242) is two and they are symmetrically arranged; The distance between the two joint ball planes (5242) is D1, the distance between the first plane (5115) and the second plane (5118) is D2, the diameter of the joint ball (524) is D3, the maximum distance between the first arc surface (5114) and the second arc surface (5117) is D4, and the ball diameter of the spherical socket surface (5116) is D5; Among them, D1 <D2<D3≤D4≤D5。 4. The side door driving device according to claim 1, wherein: The first angle is 90°; and / or the second angle is 0°.

5. The side-opening door driving device according to claim 1, characterized in that: The guide structure comprises: a first guide surface (5111) located at the top of the screw nut (511); a second guide surface (5112) and a third guide surface (5113) located on both sides of the screw nut (511); The guide housing (330) comprises: a fourth guide surface (331) cooperating with the first guide surface (5111), a fifth guide surface (332) cooperating with the second guide surface (5112), and a sixth guide surface (333) cooperating with the third guide surface (5113).

6. The side-opening door driving device according to claim 1, characterized in that: The screw nut (511) has a clearance fitting surface that is clearance-fitted with the guide housing (330), and an elastic block is provided between the clearance fitting surface of the screw nut (511) and the guide housing (330), and the elastic block abuts between the screw nut (511) and the guide housing (330).

7. The side-opening door driving device according to claim 6, characterized in that: The screw nut (511) is fixedly connected to the elastic block and is in contact with the guide housing (330), so that the elastic block and the guide housing (330) form a friction pair and provide friction damping force to the elastic block.

8. The side-opening door driving device according to claim 7, characterized in that: The contact surface of the elastic block for contacting the guide housing (330) is a smooth surface or a friction surface with a concave-convex structure.

9. The side-opening door driving device according to claim 6, wherein: The number of the elastic blocks is at least two and they are symmetrically arranged relative to the center line of the screw nut (511).

10. An automobile comprising a door, a body and a side door driving device, characterized in that: The side-opening door driving device is the side-opening door driving device as described in any one of claims 1-9.

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