A vehicle sliding door drive device, a vehicle sliding door, and a vehicle

Abstract

This invention provides a vehicle sliding door drive device, a vehicle sliding door, and a vehicle. The vehicle sliding door drive device includes a rotary drive mechanism, a first rotary-to-linear motion mechanism, a rack and pinion transmission mechanism, and a second rotary-to-linear motion mechanism. Both the rotary drive mechanism and the first rotary-to-linear motion mechanism are mounted on the vehicle door body. The rotary drive mechanism is drivenly connected to the first rotary-to-linear motion mechanism. The rack and pinion transmission mechanism includes a rack and a gear assembly that mesh with each other. The rack is mounted on the first rotary-to-linear motion mechanism, and the gear assembly is drivenly connected to the second rotary-to-linear motion mechanism. The second rotary-to-linear motion mechanism is mounted on the vehicle floor. The first linear motion direction of the first rotary-to-linear motion mechanism and the second linear motion direction of the second rotary-to-linear motion mechanism are set at a preset angle. This solution can reduce the size and weight of the vehicle sliding door drive device, thereby reducing manufacturing costs.

Description

Technical Field

[0001] This invention relates to the field of automotive technology, and more specifically, to a vehicle sliding door drive device, a vehicle sliding door, and a vehicle. Background Technology

[0002] Automobiles are common means of transportation, and vehicle doors are an essential structural component. Some existing vehicles, such as multi-purpose vehicles (MPVs), generally use sliding doors. This involves multiple guide rails (upper, middle, and lower) on the vehicle body, with corresponding hinges on the door. Multiple drive mechanisms drive the corresponding hinges to slide within the guide rails, thus opening and closing the door. However, this type of door requires multiple drive mechanisms to operate simultaneously, resulting in large size, weight, and high manufacturing costs. Summary of the Invention

[0003] The present invention aims to provide a vehicle sliding door drive device to solve the technical problems of existing vehicle sliding doors, which require multiple drive devices to drive the vehicle door to open and close simultaneously, resulting in large size, heavy weight and high production cost.

[0004] To achieve the above objectives, the technical solution of the present invention is as follows:

[0005] A vehicle sliding door drive device includes a rotary drive mechanism, a first rotary-to-linear motion mechanism, a rack and pinion transmission mechanism, and a second rotary-to-linear motion mechanism. Both the rotary drive mechanism and the first rotary-to-linear motion mechanism are mounted on the vehicle door body. The rotary drive mechanism is driven to the first rotary-to-linear motion mechanism. The rack and pinion transmission mechanism includes a rack and a gear assembly that mesh with each other. The rack is disposed on the first rotary-to-linear motion mechanism, and the gear assembly is driven to the second rotary-to-linear motion mechanism. The second rotary-to-linear motion mechanism is mounted on the vehicle floor. The first linear motion direction of the first rotary-to-linear motion mechanism and the second linear motion direction of the second rotary-to-linear motion mechanism are set at a preset angle.

[0006] Optionally, the first rotary-to-linear motion mechanism includes a first lead screw, a first slide groove, and a first slider. The first slide groove is used to be installed on the vehicle door. The rotary drive mechanism is driven to connect the first lead screw to the first slider so as to drive the first slider to move relative to the first slide groove along a first linear motion direction.

[0007] Optionally, the rack is installed in the first slide groove and is arranged along the first linear motion direction. When the first lead screw rotates and drives the first slide groove and the vehicle door to make linear motion, the rack moves to drive the gear assembly to transmit power.

[0008] Optionally, the gear and rack transmission mechanism further includes a housing connected to the first slider, the gear assembly being rotatably disposed within the housing, and the housing having a notch on the side near the rack, the gear assembly extending at least partially out of the notch to mesh with the rack for transmission.

[0009] Optionally, the gear assembly includes a first gear, a connecting shaft, and a second gear. The first gear is connected to the second gear via the connecting shaft, and the rack meshes with the first gear to drive the second gear to rotate synchronously.

[0010] Optionally, the second rotary-to-linear motion mechanism includes a second lead screw, a second slide groove, a second slider, and a sliding sleeve. The second slide groove is used to be installed on the vehicle floor. The sliding sleeve is sleeved on the second lead screw. The second gear is connected to the sliding sleeve to drive the sliding sleeve to move relative to the second lead screw. The sliding sleeve and the second slider are respectively connected to the housing. The sliding sleeve drives the second slider to move relative to the second slide groove along the second linear motion direction.

[0011] Optionally, the first linear motion direction is the same as the vehicle's direction of travel, and the second linear motion direction is perpendicular to the first linear motion direction.

[0012] Optionally, the rotary drive mechanism includes a drive motor and a third fixed frame, the third fixed frame being used to install on the vehicle door body, and the drive motor being installed on the third fixed frame.

[0013] The vehicle sliding door drive device of this invention comprises a rotary drive mechanism that drives a first rotary-to-linear motion mechanism. This first mechanism converts the rotational motion of the rotary mechanism into linear motion, causing the vehicle door to move along a first linear motion direction, which can be the vehicle's driving direction. Simultaneously, during this linear motion, the first mechanism drives the rack of a gear and rack transmission mechanism to move along the first linear motion direction. Through the meshing of the gear and rack, the gear assembly rotates. The rotational force of the gear assembly is transmitted to a second rotary-to-linear motion mechanism, which converts the rotational force of the gear assembly into a linear driving force, thereby pushing the vehicle door along the second linear motion direction. This achieves the purpose of opening and closing the vehicle door by using only one rotary drive mechanism to drive the vehicle door to move in two different linear directions. Furthermore, only one rotary drive mechanism is needed, overcoming the technical problems of large overall size, weight, and high production costs associated with using multiple drive devices.

[0014] Another object of the present invention is to provide a vehicle sliding door, including the aforementioned vehicle sliding door drive device. The advantages of the vehicle sliding door compared to the prior art are the same as those of the aforementioned vehicle sliding door drive device, and will not be repeated here.

[0015] Another object of the present invention is to provide a vehicle including the aforementioned sliding door. The advantages of the vehicle compared to the prior art are the same as those of the aforementioned sliding door, and will not be repeated here. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the vehicle sliding door drive device according to an embodiment of the present invention;

[0017] Figure 2 This is a partial structural schematic diagram of the first rotational-to-linear motion mechanism according to an embodiment of the present invention;

[0018] Figure 3 This is a schematic diagram of the structure of the second rotational-to-linear motion mechanism according to an embodiment of the present invention;

[0019] Figure 4 for Figure 3 A structural diagram from another perspective;

[0020] Figure 5 This is a partial structural schematic diagram of the gear and rack transmission mechanism according to an embodiment of the present invention;

[0021] Figure 6 This is a schematic diagram of the installation structure between the first gear and the rack in an embodiment of the present invention;

[0022] Figure 7 This is a schematic diagram of the first state of a vehicle sliding door according to an embodiment of the present invention;

[0023] Figure 8 This is a schematic diagram of the second state of the vehicle sliding door according to an embodiment of the present invention.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Rotary drive mechanism; 11. Drive motor; 12. Third fixed frame; 2. First rotary-to-linear motion mechanism; 21. First lead screw; 22. First slide groove; 221. Dovetail rod; 23. First slider; 231. Dovetail groove; 24. First fixed frame; 3. Gear and rack transmission mechanism; 31. Rack; 32. Gear assembly; 321. First gear; 322. Connecting shaft; 323. Second gear; 33. Housing; 331. Notch; 4. Second rotary-to-linear motion mechanism; 41. Second lead screw; 42. Second slide groove; 43. Second slider; 44. Sliding sleeve; 45. Second fixed frame; 5. Vehicle door. Detailed Implementation

[0026] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0027] In the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fitting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0028] In addition, it should be noted that in the description of the present invention, terms such as "upper," "lower," "front," and "rear" used to indicate orientation in various embodiments are only for simplifying the description of the positional relationships based on the accompanying drawings and do not mean that the elements and devices referred to must be operated in accordance with the specific orientation and limited operation, method, and structure in the specification. Such directional terms do not constitute a limitation on the present invention.

[0029] In this paper, a coordinate system XYZ is established, where the positive direction of the X-axis represents the front and the negative direction of the X-axis represents the back, the positive direction of the Y-axis represents the left and the negative direction of the Y-axis represents the right, the positive direction of the Z-axis represents the top and the negative direction of the Z-axis represents the bottom.

[0030] like Figure 1 , Figure 5 As shown in the figure, a vehicle sliding door drive device according to an embodiment of the present invention includes a rotary drive mechanism 1, a first rotary-to-linear motion mechanism 2, a gear and rack transmission mechanism 3, and a second rotary-to-linear motion mechanism 4. The rotary drive mechanism 1 and the first rotary-to-linear motion mechanism 2 are both used to be installed on the vehicle door body 5. The rotary drive mechanism 1 is drivenly connected to the first rotary-to-linear motion mechanism 2. The gear and rack transmission mechanism 3 includes a rack 31 and a gear assembly 32 that mesh with each other. The rack 31 is disposed on the first rotary-to-linear motion mechanism 2. The gear assembly 32 is drivenly connected to the second rotary-to-linear motion mechanism 4. The second rotary-to-linear motion mechanism 4 is used to be installed on the vehicle floor. The first linear motion direction of the first rotary-to-linear motion mechanism 2 and the second linear motion direction of the second rotary-to-linear motion mechanism 4 are set at a preset angle.

[0031] In this embodiment, the first rotation-to-linear motion mechanism 2 includes a rotation part and a linear motion part. The rotation part of the first rotation-to-linear motion mechanism 2 is connected to the rotation drive mechanism 1. The vehicle door 5 and the rack 31 can be installed on the linear motion part of the first rotation-to-linear motion mechanism 2. The first rotation-to-linear motion mechanism 2 converts the rotational motion of the rotation drive mechanism 1 into linear motion, thereby driving the vehicle door 5 and the rack 31 to move linearly along the first linear motion direction.

[0032] While the vehicle door 5 moves along the first linear motion direction, the rack 31 drives the gear assembly 32 to rotate through the meshing transmission of the gear and rack. The rotational force of the gear assembly 32 is transmitted to the input end of the second rotary-to-linear motion mechanism 4, that is, the rotating part of the second rotary-to-linear motion mechanism 4. The second rotary-to-linear motion mechanism 4 converts the rotational force of the gear assembly 32 into a linear driving force, which pushes the vehicle door 5 to move along the second linear motion direction. This achieves the purpose of opening and closing the vehicle door 5 by driving the vehicle door 5 to move in two different directions with only one rotary drive mechanism 1.

[0033] Traditional sliding doors rely on multiple guide rails and hinges on the car door and body, with the sliding action of these components controlling the opening and closing of the door. This design imposes significant limitations on the door and body shape and results in high manufacturing costs. In this embodiment, only one second rotary-to-linear motion mechanism 4 needs to be installed on the vehicle floor, eliminating the need for multiple guide rails on the car body and simplifying manufacturing. Furthermore, using multiple guide rails and hinges requires multiple drive units, increasing the overall size, weight, and production cost of the device. This solution uses a single rotary drive mechanism to achieve linear drive in two directions, resulting in a smaller, lighter, and lower-cost overall sliding door drive system.

[0034] Here, the first linear motion direction can be approximately along the front-to-back direction of the vehicle, and the second linear motion direction can be approximately along the left-to-right direction of the vehicle.

[0035] Optionally, such as Figure 1-2 As shown, the first rotary linear motion mechanism 2 includes a first lead screw 21, a first slide groove 22 and a first slider 23. The first slide groove 22 is used to be installed on the vehicle door 5. The rotary drive mechanism 1 is driven to connect the first lead screw 21 and the first slider 23 to drive the first slider 23 to move relative to the first slide groove 22 along the first linear motion direction.

[0036] In this embodiment, the first rotary-to-linear motion mechanism 2 adopts a lead screw transmission mechanism. The first lead screw 21 is arranged along the X-axis, and the first slide groove 22 is arranged along the front-rear direction of the vehicle door 5, and is generally fixed on the inner side of the vehicle door 5 near the bottom.

[0037] Each of the upper and lower sides of the first slide groove 22 is provided with a dovetail rod 221. The first slider 23 is provided with a dovetail groove 231 adapted to the slide rail on the side near the first slide groove 22. The rotary drive mechanism 1 drives the first lead screw 21 to rotate around the X-axis, and the first slider 23 tends to rotate around the X-axis and move along the X-axis direction. Due to the restriction between the dovetail groove on the first slider 23 and the dovetail rod on the first slide groove 22, the first slider 23 will only slide relative to the first slide groove 22 in the direction shown by the X-axis. Since the first slider 23 is connected to the vehicle floor through the gear and rack transmission mechanism 3 and the second rotary-to-linear motion mechanism 4, and is relatively fixed in the X-axis direction, the first slide groove 22 will drive the vehicle door 5 to produce linear motion relative to the first slider 23 in the direction shown by the X-axis.

[0038] The sliding fit of the dovetail rod 221 and the dovetail groove 231 ensures the stability of the vehicle door 5 moving along the X-axis.

[0039] Optionally, such as Figure 1-2 As shown, the first rotational linear motion mechanism 2 further includes a first fixed frame 24, which is used to be installed in the first slide groove 22, and the first lead screw 21 is rotatably connected to the first fixed frame 24.

[0040] In this embodiment, the first fixing bracket 24 can be disposed at both ends of the first lead screw 21. The first fixing bracket 24 is provided with mounting holes. The two ends of the first lead screw 21 are respectively inserted into the mounting holes on the corresponding first fixing bracket 24 to be rotatably connected with the first fixing bracket 24, thereby fixing the first lead screw 21 in the first slide groove 22, improving the stability of the connection of the first lead screw 21, preventing the first lead screw 21 from shaking during rotation, and improving the stability of the movement of the vehicle door 5.

[0041] Optionally, the rack 31 is installed in the first slide groove 22 and is arranged along the first linear motion direction. When the first lead screw 21 rotates and drives the first slide groove 22 and the vehicle door 5 to make linear motion, the rack 31 moves to drive the gear assembly 32 to transmit power.

[0042] In this embodiment, the rack 31 is arranged along the X-axis and located near the bottom of the first slide groove 22. When the vehicle door 5 is driven to move along the X-axis, the first slider 23 remains stationary, the first slide groove 22 moves relative to the first slider 23 along the X-axis, and the rack 31 moves synchronously with the first slide groove 22, driving the gear assembly 32 to move, thereby realizing the power transmission between the first rotational-to-linear motion mechanism 2 and the gear and rack transmission mechanism 3.

[0043] Optionally, such as Figure 6 As shown, the gear and rack transmission mechanism 3 also includes a housing 33, which is connected to the first slider 23. The gear assembly 32 is rotatably disposed in the housing 33. The housing 33 has a notch 331 on the side near the rack 31. The gear assembly 32 extends at least partially out of the notch 331 to mesh with the rack 31 for transmission.

[0044] In this embodiment, the gear assembly 32 is placed inside the housing 33. On the one hand, this protects the gear assembly 32 and prevents the structure from being exposed. On the other hand, it is used to connect with the first slider 23 to form an integral whole. When the second rotational linear motion mechanism 4 drives the vehicle door 5 to move along the second linear motion direction, the gear and rack transmission mechanism 3 moves together with the first rotational linear motion mechanism 2, resulting in better stability.

[0045] The housing 33 is generally cylindrical, and the notch 331 can extend along the direction shown by the Z-axis. The notch can be an arc-shaped notch to facilitate the extension of part of the gear of the gear assembly 32.

[0046] Optionally, such as Figure 5 As shown, the gear assembly 32 includes a first gear 321, a connecting shaft 322 and a second gear 323. The first gear 321 is connected to the second gear 323 through the connecting shaft 322. The rack 31 meshes with the first gear 321 to drive the second gear 323 to rotate synchronously.

[0047] In this embodiment, the first gear 321 and the second gear 323 are coaxially arranged and connected by a connecting shaft 322. The number of teeth and diameter of the first gear 321 and the second gear 323 may be the same or different. During the linear motion, the rack 31 drives the first gear 321 to rotate around the Z-axis. The first gear 321 and the second gear 323 rotate synchronously and do not generate relative motion between them.

[0048] The connecting shaft 322 is used to compensate for the height difference between the rack 31 and the input end of the second rotary-to-linear motion mechanism 4. The rotation of the first gear is transmitted to the second gear through the connecting shaft 322, and the second gear 323 is connected to the second rotary-to-linear motion mechanism 4.

[0049] The gear assembly 32 can also adopt other multi-gear transmission structures.

[0050] Optionally, such as Figure 1 , 3As shown in Figure 4, the second rotary-to-linear motion mechanism 4 includes a second lead screw 41, a second slide groove 42, a second slider 43, and a sliding sleeve 44. The second slide groove 42 is used to install on the vehicle floor. The sliding sleeve 44 is sleeved on the second lead screw 41. The second gear 323 is connected to the sliding sleeve 44 to drive the sliding sleeve 44 to move relative to the second lead screw 41. The sliding sleeve 44 and the second slider 43 are respectively connected to the housing 33. The sliding sleeve 44 drives the second slider 43 to move relative to the second slide groove 42 along the second linear motion direction.

[0051] In this embodiment, the second lead screw 41 is arranged along the Y-axis, and the length direction of the second slide groove 42 is consistent with the length direction of the second lead screw 41.

[0052] The rotary drive mechanism 1 drives the first lead screw 21 to rotate around the X-axis, causing the vehicle door 5 and the first slide groove 22 to move linearly relative to the first slider 23 along the X-axis. During the linear motion, the rack 31 on the first slide groove 22 drives the gear assembly 32 to rotate. The outer surface of the sliding sleeve 44 on the second lead screw 41 is provided with teeth. The second gear 323 at the output end of the gear assembly 32 rotates to drive the sliding sleeve 44 to generate a tendency to rotate around the second lead screw 41 or move linearly along it. Since the sliding sleeve 44 is relatively fixed with the second slider 43, the housing 33 of the gear and rack transmission mechanism 3 and the first slider 23, and due to the sliding restriction of the second slider 43 and the second slide groove 42 along the Y-axis, the second slider 43 can only slide and cannot rotate. During the sliding of the second slider 43 along the Y-axis, it drives the first rotary-to-linear motion mechanism 2 and the vehicle door 5 to move linearly.

[0053] The second slider 43 and the second slide groove 42 can be stably connected by multiple sets of dovetail slide grooves and dovetail slide rails, ensuring the stability of the vehicle door 5 moving along the Y-axis.

[0054] It should be noted that the axis of the second gear 323 is along the Z-axis, and the axis of the sliding sleeve 44 coincides with the axis of the second lead screw 41, both along the Y-axis. The axes of the second gear 323 and the sliding sleeve 44 are relatively perpendicular, forming a worm gear transmission-like configuration. With a fixed travel distance of the vehicle door 5 along the X-axis, the travel distance of the vehicle door 5 along the Y-axis can be adjusted by changing the ratio of the number of teeth on the surface of the sliding sleeve 44 to the number of teeth on the second gear 323.

[0055] Optionally, such as Figure 1 , 3As shown, the second rotational linear motion mechanism 4 further includes a second fixed frame 45, which is used to be mounted on the second slide 42 or the vehicle floor plate, and the second lead screw 41 rotates with the second fixed frame 45.

[0056] In this embodiment, two second fixing brackets 45 are spaced apart along the length direction of the second lead screw 41. The second fixing bracket 45 is provided with mounting holes. The second lead screw 41 passes through the mounting holes on the corresponding second fixing bracket 45 to be rotatably connected with the second fixing bracket 45, thereby fixing the second lead screw 41 to the second slide groove 42 or the vehicle floor, improving the stability of the connection of the second lead screw 41, preventing the second lead screw 41 from shaking during rotation, and improving the stability of the movement of the vehicle door 5.

[0057] It should be noted that when there are multiple second fixing brackets 45, some of the second fixing brackets 45 can be installed on the vehicle floor, and some of the second fixing brackets 45 can be installed in the second slide groove 42.

[0058] Optionally, the first linear motion direction is the same as the vehicle's direction of travel, and the second linear motion direction is perpendicular to the first linear motion direction.

[0059] In this embodiment, the arc motion during the opening and closing process of the existing sliding door is transformed into linear motion in two directions that are perpendicular to each other, simplifying the motion form and making it easier to control.

[0060] Optionally, such as Figure 1-2 As shown, the rotary drive mechanism 1 includes a drive motor 11 and a third fixing frame 12. The third fixing frame 12 is used to be installed on the vehicle door 5, and the drive motor 11 is installed on the third fixing frame 12.

[0061] In this embodiment, the drive motor 11 is mounted on the vehicle door 5 via the third fixing bracket 12. Exemplarily, the third fixing bracket 12 can be located at one end of the first sliding groove 22. Using the drive motor 11 to provide rotational driving force is simple to implement. The opening and closing speed of the vehicle door 5 is controlled by controlling the rotational speed of the drive motor 11, making the control process simple.

[0062] like Figure 7-8 As shown, another embodiment of the present invention provides a vehicle sliding door, including a vehicle door body 5 and the vehicle sliding door drive device, wherein the second rotation-to-linear motion mechanism 4 of the vehicle sliding door drive device is connected to the vehicle floor, and the first rotation-to-linear motion mechanism 2 of the vehicle sliding door drive device is connected to the vehicle door body 5.

[0063] The advantages of the vehicle sliding door compared to the prior art are the same as those of the vehicle sliding door drive device mentioned above, and will not be repeated here.

[0064] Another embodiment of the present invention provides a vehicle including the aforementioned sliding door. The vehicle body has multiple doorways, at least one of which is equipped with the sliding door. The advantages of this vehicle compared to the prior art are the same as those of the aforementioned sliding door, and will not be repeated here.

[0065] While the disclosure is as stated above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this disclosure, and all such changes and modifications will fall within the protection scope of this invention.

Claims

1. A vehicle sliding door drive device, characterized in that, The system includes a rotary drive mechanism (1), a first rotary-to-linear motion mechanism (2), a gear and rack transmission mechanism (3), and a second rotary-to-linear motion mechanism (4). The rotary drive mechanism (1) and the first rotary-to-linear motion mechanism (2) are both installed on the vehicle door (5). The rotary drive mechanism (1) is driven by the first rotary-to-linear motion mechanism (2). The gear and rack transmission mechanism (3) includes a rack (31) and a gear assembly (32) that mesh with each other. The rack (31) is disposed on the first rotary-to-linear motion mechanism (2). The gear assembly (32) is driven by the second rotary-to-linear motion mechanism (4). The second rotary-to-linear motion mechanism (4) is installed on the vehicle floor. The first linear motion direction of the first rotary-to-linear motion mechanism (2) and the second linear motion direction of the second rotary-to-linear motion mechanism (4) are set at a preset angle. Both the first rotary-to-linear motion mechanism (2) and the second rotary-to-linear motion mechanism (4) adopt a screw transmission mechanism. The second rotary-to-linear motion mechanism (4) includes a second lead screw (41), a second slide groove (42), a second slider (43), and a sliding sleeve (44). The second slide groove (42) is used to install on the vehicle floor. The sliding sleeve (44) is sleeved on the second lead screw (41). The gear assembly (32) is connected to the sliding sleeve (44) to drive the sliding sleeve (44) to move relative to the second lead screw (41). The sliding sleeve (44) is connected to the second slider (43). The sliding sleeve (44) drives the second slider (43) to move relative to the second slide groove (42) along the second linear motion direction. The gear assembly (32) includes a first gear (321), a connecting shaft (322) and a second gear (323). The first gear (321) is connected to the second gear (323) through the connecting shaft (322). The rack (31) meshes with the first gear (321) to drive the second gear (323) to rotate synchronously.

2. The vehicle sliding door drive device according to claim 1, characterized in that, The first rotary linear motion mechanism (2) includes a first lead screw (21), a first slide groove (22) and a first slider (23). The first slide groove (22) is used to be installed on the vehicle door (5). The rotary drive mechanism (1) is driven to connect with the first slider (23) through the first lead screw (21) so as to drive the first slider (23) to move relative to the first slide groove (22) along the first linear motion direction.

3. The vehicle sliding door drive device according to claim 2, characterized in that, The rack (31) is installed in the first slide groove (22) and is set along the first linear motion direction. When the first lead screw (21) rotates and drives the first slide groove (22) and the vehicle door (5) to make linear motion, the rack (31) moves to drive the gear assembly (32) to transmit.

4. The vehicle sliding door drive device according to claim 3, characterized in that, The gear and rack transmission mechanism (3) further includes a housing (33), which is connected to the first slider (23). The gear assembly (32) is rotatably disposed in the housing (33). The housing (33) has a notch (331) on the side near the rack (31). The gear assembly (32) extends at least partially out of the notch (331) to mesh with the rack (31) for transmission.

5. The vehicle sliding door drive device according to claim 4, characterized in that, The second gear (323) is connected to the sliding sleeve (44) for transmission, and the sliding sleeve (44) and the second slider (43) are respectively connected to the housing (33).

6. The vehicle sliding door drive device according to claim 1, characterized in that, The first linear motion direction is the same as the vehicle's direction of travel, and the second linear motion direction is perpendicular to the first linear motion direction.

7. The vehicle sliding door drive device according to claim 1, characterized in that, The rotary drive mechanism (1) includes a drive motor (11) and a third fixed frame (12). The third fixed frame (12) is used to be installed on the vehicle door (5), and the drive motor (11) is installed on the third fixed frame (12).

8. A vehicle sliding door, characterized in that, Includes the vehicle sliding door drive device as described in any one of claims 1-7.

9. A vehicle, characterized in that, Including the vehicle sliding door as described in claim 8.

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