A car door opening device

Abstract

This application provides a vehicle door opening device, including a drive mechanism and a hydraulic transmission mechanism. The hydraulic transmission mechanism includes a housing and a liquid transmission medium, a power input element, and a power output element disposed within the housing. The output end of the drive mechanism is connected to the power input element, which is driven by the liquid transmission medium to the power output element. The power output element is connected to a rotating component that drives the vehicle door to rotate. Under the drive of the drive mechanism, the power input element can push the liquid transmission medium to flow within the housing and drive the power output element to rotate, thereby controlling the opening of the vehicle door. The vehicle door opening device provided by this application adopts a non-rigid connection transmission mechanism, which achieves energy transfer through a liquid transmission medium. Compared with traditional mechanical transmission mechanisms, it can not only avoid wear of the power input and power output elements in the transmission mechanism, extending their service life, but also better absorb the impact and vibration from external loads.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and more specifically, to a door opening device. Background Technology

[0002] As people's living standards improve, vehicles are becoming increasingly common in their lives. Vehicles are usually equipped with doors. When the door is open, the user can enter the vehicle through the door, and after entering the vehicle, the user can close the door.

[0003] Currently, electric door opening mechanisms typically include a mechanical transmission device. This device transmits the power output from the drive mechanism to the door hinges, thereby controlling the opening and closing of the door. Because the mechanical transmission device requires at least two meshing transmission components to transmit power, friction can easily occur between these components during meshing, thus reducing the lifespan of the mechanical transmission device. Summary of the Invention

[0004] This application provides a vehicle door opening device that uses a non-rigid connection transmission mechanism to transfer energy through a liquid transmission medium, thereby improving the service life of the transmission mechanism.

[0005] Specifically, this application is implemented through the following technical solution:

[0006] This application provides a vehicle door opening device, including:

[0007] A drive mechanism and a hydraulic transmission mechanism are provided. The hydraulic transmission mechanism includes a housing and a liquid transmission medium, a power input element, and a power output element disposed within the housing. The output end of the drive mechanism is connected to the power input element, which is driven by the liquid transmission medium to engage with the power output element. The power output element is connected to a rotating component that drives the door to rotate. Under the drive of the drive mechanism, the power input element can push the liquid transmission medium to flow within the housing and drive the power output element to rotate, thereby controlling the door to open.

[0008] Optionally, the hydraulic transmission mechanism further includes a circulation pipeline disposed within the housing; the circulation pipeline is filled with the liquid transmission medium; the power input element and the power output element are respectively rotatably disposed at opposite ends within the circulation pipeline.

[0009] Optionally, the power input element includes a first gear, and the power output element includes a second gear; a portion of the teeth of the first gear contacts the inner wall of the first end of the circulation pipeline, and a portion of the teeth of the second gear contacts the inner wall of the second end of the circulation pipeline; to divide the circulation pipeline into a first flow path and a second flow path, wherein the flow direction of the liquid transmission medium in the first flow path is opposite to the flow direction of the liquid transmission medium in the second flow path.

[0010] Optionally, the first flow path and the second flow path are arranged side by side and spaced apart.

[0011] Optionally, the housing includes at least a first portion and a second portion arranged at an angle; the power input element is disposed in the first portion, and the power output element is disposed in the second portion.

[0012] Optionally, the first portion extends along a direction parallel to the axis of the drive mechanism, and the length of the first portion is greater than the length of the second portion.

[0013] Optionally, the door opening device further includes a deceleration mechanism, and the drive mechanism is connected to the power input element through the deceleration mechanism; the axis of the deceleration mechanism is collinear with the axis of the power input element, and the axis of the deceleration mechanism is perpendicular to the axis of the drive mechanism.

[0014] Optionally, the rotating component includes a body connector and a door connector that are hinged to each other; the body connector is used to be fixedly connected to the body; the door connector is used to be fixedly connected to the door, and the door connector is connected to the power output element.

[0015] Optionally, the door connector includes an internal gear, a hinge shaft, and a mounting bracket connected to the hinge shaft; the internal gear is fixedly connected to the power output element; the hinge shaft is keyed to the internal gear, and the mounting bracket is fixedly connected to the door.

[0016] Optionally, the vehicle body connector includes a vehicle body connecting end and a hinge shaft connecting end; the vehicle body connecting end is fixedly connected to the vehicle body, and the hinge shaft connecting end is rotatably connected to the hinge shaft.

[0017] The technical solution provided in this application can achieve the following beneficial effects:

[0018] This application provides a door opening device that uses a non-rigid connection transmission mechanism to achieve energy transfer through a liquid transmission medium. Compared with traditional mechanical transmission mechanisms, it can not only avoid wear of power input and power output components in the transmission mechanism and extend service life, but also better absorb the impact and vibration from external loads. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a partial structure of a vehicle body shown in an exemplary embodiment of this application.

[0020] Figure 2 This is an exemplary embodiment of the present application illustrating the structural assembly of a door opening device and a door.

[0021] Figure 3 This is a side view illustrating the structural assembly of a door opening device and a door according to an exemplary embodiment of this application.

[0022] Figure 4 This is a perspective view of a vehicle body structure shown in an exemplary embodiment of this application.

[0023] Figure 5 yes Figure 4 Enlarged view of point A.

[0024] Figure 6 This is a schematic diagram illustrating the assembly of a door opening device and a rotating component according to an exemplary embodiment of this application.

[0025] Figure 7 This is a partial structural cross-sectional view of the assembly of a door opening device and a rotating component, as shown in an exemplary embodiment of this application.

[0026] Figure 8 This is a schematic diagram of the drive mechanism shown in an exemplary embodiment of this application.

[0027] Figure 9 This is a structural assembly diagram of the first gear and turbine shown in an exemplary embodiment of this application.

[0028] Figure 10 This is a structural assembly diagram of the second gear and the internal gear shown in an exemplary embodiment of this application.

[0029] Figure 11 This is a schematic diagram of the structure of a rotating component shown in an exemplary embodiment of this application.

[0030] Reference numerals: 10, vehicle body; 11, door; 111, outer panel; 112, inner panel; 1121, inner panel body; 11211, first surface; 11212, second surface; 1122, edge; 113, interior trim panel; 12, door opening device; 121, drive mechanism; 122, hydraulic transmission mechanism; 1221, housing; 12211, first part; 12212, second part; 1222, circulation pipe; 12221, first end; 12222, second end; 1223, first flow path; 1224, second flow path ; 1225, First gear; 12251, First connecting shaft; 1226, Second gear; 123, Reduction mechanism; 1231, Worm; 1232, Turbine; 1233, Housing; 1234, Mounting point; 13, Rotating component; 131, Body connector; 1311, Body connector end; 13111, Body mounting hole; 1312, Hinge shaft connector end; 132, Door connector; 1321, Internal gear; 13211, Internal key; 13212, Second connecting shaft; 1322, Hinge shaft; 1323, Mounting bracket; 14, Fender. Detailed Implementation

[0031] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. In the following description, when referring to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments are merely illustrative of the concept of this application and do not represent all embodiments of the concept of this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the concept of this application.

[0032] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to limit the application. Unless otherwise defined, the technical or scientific terms used in this application should be understood in their ordinary sense by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in this application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms "a" or "one," etc., do not indicate a quantity limitation, but rather indicate the presence of at least one. "A plurality" or "several" indicates two or more. Unless otherwise indicated, the terms "front," "rear," "lower," and / or "upper," "top," "bottom," etc., are for ease of description only and are not limited to a location or spatial orientation. The terms "comprising" or "including," etc., mean that the elements or objects preceding "comprising" or "including" cover the elements or objects listed after "comprising" or "including" and their equivalent elements or objects, and other elements or objects are not excluded in this application. The word “connection” or “link” is not limited to physical or mechanical connections, but can also include electrical connections, whether direct or indirect.

[0033] This application discloses a vehicle, including a body. The body serves both as the part of the vehicle used for loading goods or passengers and as the base for mounting and connecting other components of the vehicle.

[0034] Please see Figure 1 In one embodiment, the vehicle also includes a door 11, which is rotatably mounted to the vehicle body 10. When the door 11 is open, a user can enter the vehicle through the door 11, and after the user enters the vehicle, the door 11 can be closed.

[0035] Please see Figures 1 to 3In one embodiment, the vehicle further includes a door opening device 12. The door 11 includes an outer panel 111 and an inner panel 112 disposed opposite to each other; the door opening device 12 is installed on the side of the inner panel 112 facing away from the outer panel 111. In other words, the door 11 divides the vehicle into an interior space and an exterior space, and the inner panel 112 and the outer panel 111 of the door 11 enclose an installation space, i.e., the interior space of the door 11. The door opening device 12 is disposed outside the interior space of the door 11 but located within the interior space of the vehicle. Thus, the door opening device 12 does not need to occupy the interior space of the door 11, avoiding interference with the movement of other components such as door glass disposed within the interior space of the door 11, and avoiding becoming a limiting factor for the design of the door glass. Furthermore, by placing the door opening device 12 on the side of the door 11 facing the interior space of the vehicle, the overall appearance of the vehicle is avoided from being affected when the door opening device 12 is placed on the side of the door 11 facing the exterior space of the vehicle.

[0036] Please see Figure 1 and Figure 3 In one embodiment, the door 11 is rotatably mounted to the vehicle body 10 via a rotating component 13; the inner panel 112 includes an inner panel body 1121 and an edge portion 1122 surrounding the inner panel body 1121; the door opening device 12 is mounted on the edge portion 1122 near the rotating component 13 and is connected to the rotating component 13. This avoids the door opening device 12 occupying space in the inner panel body 1121 and shortens the connection path between the door opening device 12 and the rotating component 13.

[0037] Typically, the rotating component 13 is installed on the side of the door 11 near the front of the vehicle and connected to the body 10. The inner panel body 1121 may have an edge portion 1122 along its circumference, and the door opening device 12 is installed on the edge portion 1122 closer to the front of the vehicle. Furthermore, there are generally two rotating components 13, vertically spaced on the side of the door 11 near the front of the vehicle. The door opening device 12 is installed on the edge portion 1122 closer to the rotating component 13 located at the lower part of the door.

[0038] The edge portion 1122 can be integrally formed with the inner plate body 1121, or it can be processed separately and then connected together.

[0039] Please continue reading. Figure 3In one embodiment, the inner panel body 1121 protrudes away from the outer panel 111 and includes a first surface 11211 and a second surface 11212. The first surface 11211 is disposed opposite to the outer panel 111. The second surface 11212 is located between the first surface 11211 and the outer panel 111 and is connected to both the first surface 11211 and the outer panel 111. The edge portion 1122 bends outward from the second surface 11212. The door opening device 12 is installed within the space enclosed by the edge portion 1122 and the second surface 11212. Thus, the protruding inner panel body 1121 can, to a certain extent, conceal the door opening device 12, improving the overall appearance of the door 11.

[0040] The edge portion 1122 is attached to and fixedly connected to the outer panel 111, for example by welding; the first surface 11211, the second surface 11212 and the outer panel 111 enclose the interior space of the door, which is used to assemble other accessories such as door glass and other components.

[0041] It should be noted that the first surface 11211 can be parallel or substantially parallel to the outer plate 111. For example, as Figure 2 The outer plate 111 shown has a plane whose extension direction is perpendicular to the paper surface direction. Correspondingly, the plane whose extension direction is the first surface 11211 also has a plane whose extension direction is perpendicular to the paper surface direction.

[0042] Please see Figure 2 and Figure 3 In one embodiment, the door 11 further includes an interior panel 113 disposed away from the outer panel 111 relative to the edge portion 1122, and the door opening device 12 is disposed between the interior panel 113 and the edge portion 1122. This facilitates concealment of the door opening device 12, thereby improving the aesthetics of the door.

[0043] The interior trim panel 113 can be an interior trim flange extending outward from the second surface 11212. The interior trim flange, part of the structure of the second surface, and the edge portion 1122 together form a receiving space for accommodating the door opening device 12.

[0044] Please see Figure 4 and Figure 5In one embodiment, the door opening device 12 includes a drive mechanism 121 and a hydraulic transmission mechanism 122. The hydraulic transmission mechanism 122 includes a housing 1221 and a liquid transmission medium, a power input element, and a power output element disposed within the housing 1221. The output end of the drive mechanism 121 is connected to the power input element, which is driven by the liquid transmission medium to engage with the power output element. The power output element is connected to a rotating component 13 that drives the door 11 to rotate. Under the drive of the drive mechanism 121, the power input element can push the liquid transmission medium to flow within the housing 1221 and drive the power output element to rotate, thereby controlling the door 11 to open. Therefore, compared with the traditional process of transmitting power using a mechanical transmission mechanism, the hydraulic transmission mechanism 122 provided in this application uses a non-rigid connection transmission mechanism, achieving energy transmission through a liquid transmission medium. Compared with traditional mechanical transmission mechanisms, it not only avoids wear on the power input and power output elements in the transmission mechanism, extending their service life, but also better absorbs the impact and vibration from external loads.

[0045] Please see Figure 6 and Figure 7 In one embodiment, the hydraulic transmission mechanism 122 further includes a circulation pipe 1222 disposed within the housing 1221; the circulation pipe 1222 is filled with a liquid transmission medium; the power input element and the power output element are rotatably disposed at opposite ends within the circulation pipe 1222. Thus, the liquid transmission medium can circulate along the circulation pipe 1222, avoiding mutual interference between the liquid transmission media during flow and thus preventing a reduction in power transmission efficiency.

[0046] When the drive mechanism 121 drives the power input element of the hydraulic transmission mechanism 122 to rotate via the reduction mechanism 123, it increases the speed and pressure of the liquid transmission medium around the power input element, thereby converting mechanical energy into the kinetic energy of the liquid transmission medium. As the kinetic energy-rich liquid transmission medium flows within the circulation pipe 1222, it impacts the power output element, transferring a portion of the energy released by the liquid transmission medium to the power output element, causing it to rotate. The power output element then transmits the power to the door 11 to drive it to rotate.

[0047] In the above scheme, the power input element and the power output element are connected only by a liquid transmission medium, and the power input element and the power output element do not make direct contact. Therefore, even if the power output element is stuck, the power input element and the drive mechanism 121 can still continue to operate without damaging the hydraulic transmission mechanism 122, thus improving the service life of the drive mechanism.

[0048] In one embodiment, the housing 1221 and the circulation pipe 1222 may be formed from metal or plastic that meets certain strength requirements.

[0049] Please see Figure 7 and Figure 8 In one embodiment, the power input element includes a first gear 1225, and the power output element includes a second gear 1226. A portion of the teeth of the first gear 1225 contacts the inner wall of the first end 12221 of the circulation pipe 1222, and a portion of the teeth of the second gear 1226 contacts the inner wall of the second end 12222 of the circulation pipe 1222. This divides the circulation pipe 1222 into a first flow path 1223 and a second flow path 1224, where the flow direction of the liquid transmission medium in the first flow path 1223 is opposite to the flow direction of the liquid transmission medium in the second flow path 1224. Thus, when the hydraulic transmission mechanism 122 is stationary, the first gear 1225 and the second gear 1226 can separate the first flow path 1223 and the second flow path 1224, preventing the liquid transmission medium from passing through the gap between the first gear 1225 and the inner wall or the second gear 1226 and the inner wall, thereby ensuring the sealing and reliability of the hydraulic transmission mechanism 122. When the hydraulic transmission mechanism 122 is in operation, the rotation of the first gear 1225 causes the portion of the multiple teeth of the first gear 1225 that is in contact with the hydraulic transmission medium inside the circulation pipe 1222 to drive the liquid transmission medium to flow. The liquid transmission medium can circulate in the circulation pipe 1222 by means of the tooth groove between two adjacent teeth, thereby driving the second gear 1226 to rotate.

[0050] The first end 12221 and the second end 12222 are the two ends extending along the length of the circulation pipeline, respectively. Furthermore, the specific structures of the power input element and the power output element are not limited to this.

[0051] Please continue reading. Figure 7 In one embodiment, the first flow path 1223 and the second flow path 1224 are arranged side by side and spaced apart. This allows the hydraulic transmission mechanism 122 to have a more compact structure and reduces the installation space required.

[0052] It should be noted that the liquid transmission medium can be hydraulic transmission oil. By filling the circulation line 1222 with hydraulic transmission oil, a lubrication function can be achieved. To reduce friction loss, the viscosity of the hydraulic transmission oil can be adjusted appropriately according to actual needs.

[0053] Please continue reading. Figure 6The housing 1221 includes at least a first portion 12211 and a second portion 12212 arranged at an angle; the power input element is disposed in the first portion 12211, and the power output element is disposed in the second portion 12212. This minimizes the volume of the hydraulic transmission mechanism 122, thereby reducing its footprint. In one embodiment, the connection between the first portions 12211 and 12212 is a smooth transition, which reduces the flow resistance of the liquid transmission medium.

[0054] Please see Figure 3 and Figure 4 In one embodiment, the first portion 12211 extends along an axis parallel to the drive mechanism 121. This allows for a more compact assembly of the drive mechanism 121 and the hydraulic transmission mechanism 122, saving installation space for the door opening device 12. The first portion 12211 extends for a greater length than the second portion 12212. This reduces the installation space required along the thickness direction of the door 11.

[0055] The axis of the drive mechanism 121 is parallel to the door 11; in other words, when the door 11 is closed, the plane containing the door 11 is perpendicular or substantially perpendicular to the horizontal plane, and the axis of the drive mechanism 121 is parallel to the plane containing the door 11. It should be noted that the thickness of the door 11 is the length of the door extending from the interior space of the vehicle to the exterior space. In one embodiment, the second part 12212 is perpendicular to and opposite to the first part 12211, further reducing the overall size of the hydraulic transmission mechanism 122.

[0056] Please see Figures 5 to 7 In one embodiment, the door opening device 12 further includes a reduction mechanism 123, through which the drive mechanism 121 is connected to the power input element. The axis of the reduction mechanism 123 is collinear with the axis of the power input element, and perpendicular to the axis of the drive mechanism 121. Thus, the reduction mechanism 123 can reduce the output speed of the drive mechanism 121, ensuring smooth operation of the hydraulic transmission mechanism 122. By setting the axis of the reduction mechanism 123 to be collinear with the axis of the power input element and perpendicular to the axis of the drive mechanism 121, the assembly of the drive mechanism 121, the reduction mechanism 123, and the hydraulic transmission mechanism 122 can be made more compact, reducing the installation space of the door opening device 12.

[0057] In one embodiment, the first portion 12211 of the housing 1221 continues to bend and extend to one side along the same plane from the end away from the second portion 12212, so as to facilitate connection with the deceleration mechanism 123. Of course, the specific structure of the housing 1221 is not limited to this, and can be adapted to the actual space size of the door, for example, it can be "L" shaped or "Z" shaped, but is not limited to this.

[0058] Please see Figure 4 and Figure 5 In one embodiment, the vehicle body further includes a fender 14 mounted on the vehicle body 10, the fender 14 being disposed adjacent to the door 11; the drive mechanism 121 is mounted on the inner side of the fender 14. Thus, by mounting a portion of the door opening device 12, namely the drive mechanism 121, on the inner side of the fender 14, the installation space occupied by the door 11 can be further reduced, thus reducing the space requirements for the drive mechanism 121. Here, the inner side of the fender 14 refers to the side of the fender 14 facing the interior of the vehicle. Of course, the specific location of the drive mechanism 121 is not limited to this.

[0059] In one embodiment, the drive mechanism 121 includes a drive motor, the power input end of the reduction mechanism 123 is connected to the output end of the drive motor, and the power output end of the reduction mechanism 123 is connected to the power input element. When the output end of the drive motor, i.e., the output shaft, rotates in the forward direction, the reduction mechanism 123 drives the power input element of the hydraulic transmission mechanism 122 to rotate in the forward direction. During the rotation of the power input element, the liquid transmission medium in the circulation pipe 1222 flows, and then the flowing liquid transmission medium drives the power output element of the hydraulic transmission mechanism 122 to rotate in the forward direction, thereby controlling the door 11 to open. When the output end of the drive motor, i.e., the output shaft, rotates in the reverse direction, the reduction mechanism 123 can still drive the power input element of the hydraulic transmission mechanism 122 to rotate in the reverse direction. During the rotation of the power input element, the liquid transmission medium in the circulation pipe 1222 flows, and then the flowing liquid transmission medium drives the power output element of the hydraulic transmission mechanism 122 to rotate in the reverse direction, thereby controlling the door 11 to close.

[0060] It should be noted that "forward" and "reverse" refer to two directions of rotation that are opposite in direction, without specifying a particular direction of rotation. For example, when "forward" means counterclockwise, then "reverse" means clockwise; when "forward" means clockwise, then "reverse" means counterclockwise.

[0061] Please see Figures 7 to 9In one embodiment, the reduction mechanism 123 includes a worm gear 1232 and a worm 1231; the worm 1231 is fixedly connected to the output end of the drive motor; the worm gear 1232 is drive-connected to the worm 1231; and is coaxially arranged and fixedly connected to the first gear 1225. Thus, through the cooperation of the worm gear 1232 and the worm 1231, a large transmission ratio can be obtained to achieve the purpose of speed reduction. Specifically, the worm gear 1232 can be fixedly connected to the first gear 1225 via a first connecting shaft 12251. The first connecting shaft 12251 can be integrally formed with the worm gear 1232 or integrally formed with the first gear 1225.

[0062] Please continue reading. Figure 8 In one embodiment, the deceleration mechanism 123 includes a housing 1233 disposed on the outer periphery of the turbine 1232, and the housing 1233 is provided with at least one mounting point 1234, such as two or three mounting points 1234, but not limited thereto, to complete the assembly with the vehicle body.

[0063] It should be noted that the desired transmission ratio can be obtained by presetting the leads of the worm gear 1232 and worm 1231. Of course, the specific structure of the reduction mechanism 123 is not limited to this.

[0064] Please see Figure 6 In one embodiment, the rotating component 13 includes a body connector 131 and a door connector 132 hinged to each other; the body connector 131 is fixedly connected to the body 10; the door connector 132 is fixedly connected to the door 11 and is connected to the power output element. Thus, the power output end of the hydraulic transmission mechanism 122 can transmit power to the door 11 through the door connector 132, thereby causing the door 11 to rotate around the body connector 131.

[0065] The door connector 132 can be fixedly connected to the inner panel 112 of the door 11. Preferably, the door connector 132 can be fixedly connected to the second surface 11212 of the inner panel 112.

[0066] Please see Figure 6 , Figure 10 and Figure 11 In one embodiment, the door connector 132 includes an internal gear 1321, a hinge shaft 1322, and a mounting bracket 1323 connected to the hinge shaft 1322; the internal gear 1321 is fixedly connected to the power output element; the hinge shaft 1322 is keyed to the internal gear 1321, and the mounting bracket 1323 is fixedly connected to the inner plate 112. This improves the connection stability between the door 11 connector and the power output element of the hydraulic transmission mechanism 122. Please refer to [link / reference]. Figure 8The second gear 1226 is fixedly connected to the internal gear 1321 via the second connecting shaft 13212. The second connecting shaft 13212 can be integrally formed with either the second gear 1226 or the internal gear 1321. An internal key 13211 is formed at the end of the internal gear 1321 away from the second gear 1226, and an external key is formed on the outer peripheral wall of the hinge shaft 1322. The internal gear 1321 and the hinge shaft 1322 are detachably connected through the engagement of the internal key 13211 and the external key, thus facilitating maintenance and replacement.

[0067] It should be noted that the hinge shaft 1322 can be integrally formed with the mounting bracket 1323, or it can be processed separately and then fixedly connected, for example, by welding. Furthermore, the inner key 13211 and the outer key can be splines or flat keys. In one embodiment, the mounting bracket 1323 is provided with a connection hole for connecting to the door 11, and is fixedly connected to the door 11 by fasteners such as rivets passing through the connection hole.

[0068] Please continue reading. Figure 11 In one embodiment, the body connector 131 includes a body connecting end 1311 and a hinge shaft connecting end 1312; the body connecting end 1311 is fixedly connected to the body 10, and the hinge shaft connecting end 1312 is rotatably connected to the hinge shaft 1322. Therefore, it not only has a simple structure but also low manufacturing cost. In one embodiment, the body connecting end 1311 includes a body mounting hole 13111, through which a fastener, such as a screw, passes to install the body connecting end 1311 of the body connector 131 onto the body. The number of body mounting holes 13111 is at least one, for example, two, three, or even more.

[0069] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A vehicle door opening device, characterized in that, include: A drive mechanism and a hydraulic transmission mechanism are provided. The hydraulic transmission mechanism includes a housing and a liquid transmission medium, a power input element, and a power output element disposed within the housing. The output end of the drive mechanism is connected to the power input element, which is driven by the liquid transmission medium to engage with the power output element. The power output element is connected to a rotating component that drives the door to rotate. Under the drive of the drive mechanism, the power input element can push the liquid transmission medium to flow within the housing and drive the power output element to rotate, thereby controlling the door to open.

2. The door opening device according to claim 1, characterized in that, The hydraulic transmission mechanism further includes a circulation pipeline disposed within the housing; the circulation pipeline is filled with the liquid transmission medium; the power input element and the power output element are rotatably disposed at opposite ends within the circulation pipeline.

3. The door opening device according to claim 2, characterized in that, The power input element includes a first gear, and the power output element includes a second gear; a portion of the teeth of the first gear contacts the inner wall of the first end of the circulation pipeline, and a portion of the teeth of the second gear contacts the inner wall of the second end of the circulation pipeline; to divide the circulation pipeline into a first flow path and a second flow path, wherein the flow direction of the liquid transmission medium in the first flow path is opposite to the flow direction of the liquid transmission medium in the second flow path.

4. The door opening device according to claim 3, characterized in that, The first flow path and the second flow path are arranged side by side and spaced apart.

5. The door opening device according to claim 1, characterized in that, The housing includes at least a first part and a second part arranged at an angle; the power input element is disposed in the first part, and the power output element is disposed in the second part.

6. The door opening device according to claim 5, characterized in that, The first portion extends along a direction parallel to the axis of the drive mechanism, and the length of the first portion is greater than the length of the second portion.

7. The door opening device according to claim 6, characterized in that, The door opening device also includes a deceleration mechanism, and the drive mechanism is connected to the power input element through the deceleration mechanism; the axis of the deceleration mechanism is collinear with the axis of the power input element, and the axis of the deceleration mechanism is perpendicular to the axis of the drive mechanism.

8. The door opening device according to claim 1, characterized in that, The rotating component includes a body connector and a door connector that are hinged to each other; the body connector is used to be fixedly connected to the body; the door connector is used to be fixedly connected to the door, and the door connector is connected to the power output element.

9. The door opening device according to claim 8, characterized in that, The door connector includes an internal gear, a hinge shaft, and a mounting bracket connected to the hinge shaft; the internal gear is fixedly connected to the power output element; the hinge shaft is keyed to the internal gear, and the mounting bracket is fixedly connected to the door.

10. The door opening device according to claim 8, characterized in that, The vehicle body connector includes a vehicle body connecting end and a hinge shaft connecting end; the vehicle body connecting end is fixedly connected to the vehicle body, and the hinge shaft connecting end is rotatably connected to the hinge shaft.

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