Door opening and closing device and vehicle

Abstract

This disclosure relates to a vehicle door opening and closing device and a vehicle. The vehicle door opening and closing device includes a first connecting component and a second connecting component, which respectively have a first rotational connection point relative to the vehicle body and a second rotational connection point relative to the vehicle door. One of the first and second connecting components is configured with a variable connection length. The connecting component includes a sliding fit structure, and the vehicle door opens and closes according to a preset trajectory defined by the sliding fit structure. The vehicle door opening and closing device also includes an active support mechanism for providing support force, which keeps the two mating parts in the sliding fit structure in contact during relative sliding. Through the above technical solution, the shaking during the opening and closing of the vehicle door can be suppressed, the success rate of door locking can be improved, and the user experience can be enhanced.

Description

Technical Field

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

[0002] In some related technologies, the car door and the car body are opened and closed via a linkage mechanism. Due to the inherent elastic deformation properties of the linkage and the car door, the door may wobble when opening and closing, which may lead to situations where it cannot be locked, affecting the user experience. Summary of the Invention

[0003] To overcome the problems existing in the related technologies, this disclosure provides a door opening and closing device and a vehicle.

[0004] According to a first aspect of the present disclosure, a vehicle door opening and closing device is provided, comprising: A first connecting component and a second connecting component, the first connecting component and the second connecting component respectively having a first rotatable connection point relative to the vehicle body and a second rotatable connection point relative to the vehicle door; The first connecting component, the second connecting component, the vehicle body, and the door form a linkage mechanism, wherein one of the first connecting component and the second connecting component is configured to have a variable connection length, the connection length being the distance between the first rotating connection point and the second rotating connection point; wherein the connecting component with a variable connection length includes a sliding fit structure, and the door opens and closes according to a preset trajectory defined by the sliding fit structure; An active support mechanism includes an actively retractable support rod for providing support force that keeps the two mating parts in the sliding fit structure in contact during relative sliding.

[0005] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects: The door opening and closing device provided by this disclosure includes a first connecting component, a second connecting component, and an active support mechanism. One of the first connecting component and the second connecting component is provided with a sliding fit structure. The door can open and close according to a preset trajectory defined by the sliding fit structure. The active support mechanism's actively retractable support rod can provide stable support force. This support force can keep the two cooperating parts in the sliding fit structure in contact during relative sliding, improving the stability of sliding. That is, the door opening and closing device provided by this disclosure suppresses the shaking of the door during the opening and closing process by limiting the shaking of the sliding fit structure. This is beneficial to improving the success rate of door locking and enhancing the user experience.

[0006] Optionally, the sliding fit structure includes a groove and a sliding part that slides with the groove, and the supporting force causes the sliding part to fit against at least one of the two opposite side walls of the groove during the sliding process; The groove includes a first arc-shaped groove and a second arc-shaped groove connected end to end. The first arc-shaped groove and the second arc-shaped groove are tangent to each other and have a smooth transition.

[0007] Optionally, the active support mechanism includes a lead screw, a telescopic sleeve, and a guide sleeve arranged sequentially from the inside to the outside. The lead screw can be driven by a drive motor to rotate around its own axis. The lead screw is provided with an external thread structure, and the telescopic sleeve is provided with an internal thread structure that cooperates with the external thread structure, so as to convert the rotation of the lead screw into the axial movement of the telescopic sleeve.

[0008] Optionally, the connection length of the second connecting component is variable, and the second connecting component includes a first connecting arm and a second connecting arm, which are rotatably connected; wherein: The telescopic rod of the active support mechanism is rotatably connected to the second connecting arm, and the fixed part of the active support mechanism is rotatably connected to the first connecting arm; or The second connecting assembly further includes a first mounting base and a second mounting base. The sliding fit structure includes a groove disposed on the first mounting base and a sliding portion disposed on the first end of the first connecting arm. The second end of the first connecting arm is rotatably connected to the second mounting base, and the second connecting arm is rotatably connected to the first mounting base.

[0009] Optionally, the first connecting arm is constructed with a rectangular cross-section along its length, and the second connecting arm is constructed with a cross-section along its length including a first plate, a second plate, and a third plate connected to the first plate and the second plate respectively, wherein the projections of the first plate and the second plate in the Z direction coincide with the first connecting arm and the active support mechanism respectively.

[0010] Optionally, the first connecting component is configured to be driven by a drive motor to rotate about a rotation point; the first connecting component includes a third connecting arm and a fourth connecting arm, wherein: The fourth connecting arm is constructed such that its cross-section along its length includes opposing fourth and fifth plates, and a sixth plate connected to the fourth and fifth plates respectively, wherein the projections of the fourth and fifth plates in the Z-direction coincide with the third connecting arm; or The first connecting assembly further includes a third mounting base and a fourth mounting base. A first end of the third connecting arm is rotatably connected to the third mounting base, and a fourth connecting arm is disposed at a second end of the third connecting arm and rotatably connected to the fourth mounting base. The fourth connecting arm forms a drive gear; or The first connecting component is connected to the door at the center of mass of the door.

[0011] Optionally, the door opening and closing device further includes a door-side engaging component and a body-side engaging component, the door-side engaging component and the body-side engaging component being configured to engage with each other when the door is in the closed position, wherein: the body-side engaging component is provided with an engaging portion, the door-side engaging component includes a guide groove, and the guide groove includes a pair of opposing guide walls; The door-side engaging component is provided with a buffer hole at the entrance end of the guide groove, and / or the engaging portion has an arc portion that matches the shape of the pair of guide walls, and the arc portion is provided with a flexible buffer.

[0012] Optionally, the door-side latching component includes a door-side fixing bracket and a door-side guide component. The door-side fixing bracket and the door-side guide component are connected by a door-side cylindrical pin. The door-side guide component is provided with a guide arc shape. The guide arc surface is formed as one of the pair of guide walls, and the outer circumferential wall of the door-side cylindrical pin is formed as the other of the pair of guide walls.

[0013] Optionally, the door opening and closing device further includes a damping rod, which includes a damping rod body portion and a damping rod door portion. The damping rod body portion is rotatably connected to the vehicle body, and the damping rod door portion is rotatably connected to the door. The vehicle body, the door, the first connecting assembly, and the damping rod form a quadrilateral structure. The line connecting the rotating connection point of the damping rod body section and the rotating connection point of the damping rod door section is angled to the line connecting the rotating connection point of the damping rod door section and the rotating connection point of the first connecting assembly relative to the door; or The rotation connection point of the damping rod on the vehicle body is located at the rearward position in the X direction of the vehicle body roof beam, and the rotation connection point of the damping rod on the door is located at the middle-rear position in the X direction of the door roof beam.

[0014] According to a second aspect of the present disclosure, a vehicle is also provided, including the door opening and closing device described in any one of the above embodiments, wherein the first connecting component is disposed at the midpoint of the vehicle body top side beam and the vehicle body ground side beam in the Z direction, and the second connecting component is disposed on the vehicle body ground side beam.

[0015] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings: Figure 1 and Figure 2This is a schematic diagram of a vehicle according to an exemplary embodiment.

[0017] Figures 3 to 5 This is a schematic diagram of a vehicle door opening and closing device according to an exemplary embodiment, wherein from Figures 3 to 5 This refers to the process of the car door closing.

[0018] Figures 6 to 8 This is a schematic diagram of a first connecting component at different angles according to an exemplary embodiment.

[0019] Figures 9 to 11 This is a schematic diagram illustrating a second connection component according to an exemplary embodiment, wherein from Figures 9 to 11 This refers to the process of the car door closing.

[0020] Figures 12 to 14 This is a schematic diagram of a second connecting component at different angles, according to an exemplary embodiment.

[0021] Figure 15 This is a schematic diagram illustrating an active support mechanism according to an exemplary embodiment.

[0022] Figure 16 This is a schematic diagram of a connecting device according to an exemplary embodiment.

[0023] Figure 17 yes Figure 16 A cross-sectional view of the assembly shown.

[0024] Figure 18 yes Figure 16 A schematic diagram of the connecting device from another perspective.

[0025] Figure 19 This is an exploded view of the structure of a door side latching member according to an exemplary embodiment.

[0026] Figure 20 This is an exploded view of the structure of a vehicle body side latching component according to an exemplary embodiment.

[0027] Figure 21 yes Figure 16 The diagram shows an exploded view of the combined device.

[0028] Explanation of reference numerals in the attached figures 100-Door, 110-Door side latching component, 1101-Guide groove, 111-Door side fixing bracket, 112-Door side guide component, 112a-Guide arc surface, 113-Door side damping part, 114-Door side cylindrical pin, 115-Fastening component, 130-Third mounting seat, 140-Second mounting seat, 150-Door top side beam, 160-Door bottom side beam; 200-Body body, 210-Fourth mounting seat, 220-First mounting seat, 221-Slide groove, 2211-First arc-shaped groove, 2212-Second arc-shaped groove, 230-Body body side engaging component, 2301-Engaging part, 231-Body body side fixing bracket, 232-Body body side shock absorber, 233-Body body side guide component, 250-Body body top side beam, 260-Body body ground side beam; 300 - First connecting component, 310 - Fourth connecting arm, 311 - Fourth plate, 312 - Fifth plate, 313 - Sixth plate, 320 - Third connecting arm; 400-Second connecting assembly, 410-First connecting arm, 411-Square connecting arm, 412-Extended connecting arm, 413-Sliding part, 414-Cylindrical pin, 420-Second connecting arm, 421-First plate, 422-Second plate, 423-Third plate, 430-Active support mechanism, 431-Drive motor, 432-Lead screw, 433-Guide sleeve, 434-Telescopic sleeve; 500-Drive unit; 600 - Damping rod, 610 - Damping rod for vehicle body, 620 - Damping rod for vehicle door. Detailed Implementation

[0029] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0030] like Figures 1 to 21 As shown, this exemplary embodiment provides a vehicle door opening and closing device. The vehicle door opening and closing device includes a first connecting component 300 and a second connecting component 400, which are respectively located relative to a first rotational connection point on the vehicle body and a second rotational connection point on the vehicle door. Specifically, the first connecting component 300 rotates relative to the vehicle body 200 based on a pivot R1, and rotates relative to the vehicle door 100 based on a pivot R2; the second connecting component 400 rotates relative to the vehicle body 200 based on a pivot R3, and rotates relative to the vehicle door 100 based on a pivot R4. The pivots R1 to R4 have axes in the vertical direction of the vehicle.

[0031] The first connecting assembly 300, the second connecting assembly 400, the vehicle body 200, and the door 100 form a linkage structure, specifically a four-bar linkage structure. The drive device 500 is optionally mounted on one of the first connecting assembly 300 and the second connecting assembly 400, and drives the first connecting assembly 300 or the second connecting assembly 400 to rotate relative to the vehicle body 200, thereby opening and closing the door 100.

[0032] For ease of description, the following explanation uses the drive unit 500 driving the first connecting component 300 as an example. That is, the first connecting component 300 acts as the active link to support a large door load, and the second connecting component 300 acts as the driven link. The connection position between the first connecting component 300 and the door 100 can optionally be near the center of gravity of the door. This allows the drive unit 500 to provide a more stable running path for the door 100 when it drives the first connecting component 300 to swing relative to the vehicle body 200 based on the pivot R1.

[0033] The second connecting component 400 is configured with a variable connection length. This connection length refers to the distance between the first and second rotating connecting points, specifically the distance between R3 and R4, which is variable, thereby increasing the degree of freedom in opening and closing the door. The second connecting component 400 includes a sliding fit structure, and the door 100 opens and closes according to a preset trajectory defined by the sliding fit structure. Optionally, the sliding fit structure is configured as a groove 221 and a sliding portion that slides into the groove 221. The door 100 opens and closes according to the preset trajectory defined by the groove 221, for example, the door 100 opens and closes according to an S-shaped trajectory defined by two tangent arcuate grooves.

[0034] For example, the door 100 has a double-arc opening and closing trajectory L2, wherein the slide 221 includes a first arc-shaped groove 2211 and a second arc-shaped groove 2212 connected end to end. The sliding part 413 may be, for example, a cylindrical pin. Figures 3 to 4 The drive unit 500 drives the first connecting assembly 300 to rotate relative to the vehicle body 200 based on the pivot R1, causing the door to move in the closing direction. The second connecting assembly 400 is constrained by the arc-shaped sliding groove 221, and the center point of the sliding part 413 slides along the first arc segment L21 of the trajectory L2. The length between R3 and R4 remains unchanged, and the engaging device is about to engage. The engaging device includes a door-side engaging member 110 and a vehicle body-side engaging member 230, and the engaging device may include, for example, two sets, one on the top side and one on the bottom side, which may have the same structure. Figures 4 to 5 As the door continues to move toward closing, the second connecting component 400 is restricted by the arc-shaped slide groove 221, and the center point of the sliding part 413 slides along the second arc segment L22 of the L2 trajectory. The length between R3 and R4 is extended, and the door side latch 110 and the body side latch 230 are engaged, thus completing the closing action.

[0035] from Figures 5 to 4 The drive unit 500 drives the first connecting assembly 300 to rotate relative to the vehicle body 200 based on the pivot R1, the door 100 moves in the opening direction, the second connecting assembly 400 is restricted by the arc-shaped slide groove 221, the center point of the sliding part 413 slides along the second arc segment L22 of the L2 trajectory, the length between R3 and R4 shortens, and the door side latch 110 and the vehicle body side latch 230 are disengaged. From Figures 4 to 3 The car door continues to move in the opening direction. The second connecting component 400 is restricted by the arc-shaped slide groove 221. The center point of the sliding part 413 slides along the first arc segment L21 of the L2 trajectory. The length between R3 and R4 remains unchanged. The car door is opened to the fully open position, and the opening action is completed.

[0036] Although making the distance between R3 and R4 variable increases the freedom of door opening and closing, the inherent elastic deformation of the linkage and door makes the front end in the X direction prone to sliding during opening and closing. This can lead to situations where the door side latch 110 and the body side latch 230 cannot accurately engage, affecting the user experience. It should be noted that the direction the door opening and closing device points forward is defined as the X-direction, the outward direction across the vehicle width as the Y-direction, and the upward direction towards the sky as the Z-direction.

[0037] Based on this, the door opening and closing device provided in this disclosure also includes an active support mechanism 430 for providing support force. The active support mechanism 430 includes an actively retractable support rod, which provides support force so that the sliding part 413 is in contact with at least one of the two opposing inner sidewalls of the slide groove 221 during sliding. Here, "active" means that the retractable rod actively extends or shortens during the sliding of the sliding part 413 to apply support force to the sliding part 413, which is different from the passive adaptive adjustment of the spring structure. The support force provided by the active support mechanism 430 ensures that the sliding part 413 in the second connecting assembly 400, which slides in contact with the slide groove 221, can always be in contact with one of the two opposing inner sides of the slide groove 221 during sliding, thereby improving the stability of sliding. That is, the door opening and closing device provided in this disclosure suppresses the shaking of the door 100 during opening and closing by limiting the shaking of the sliding contact structure, which helps to improve the success rate of door locking and enhance the user experience.

[0038] The door 100 can be configured with a double-arc motion trajectory, that is, the slide groove 221 includes a first arc-shaped groove 2211 and a second arc-shaped groove 2212 connected end to end, the first arc-shaped groove 2211 and the second arc-shaped groove 2212 are tangent, and the first arc-shaped groove 2211 and the second arc-shaped groove 2212 are smoothly transitioned. This can reduce the jamming of the sliding part 413 during the sliding process, making the door opening and closing process smoother and improving the locking probability. In some other possible ways, the door 100 can also be configured with other possible motion trajectories or combinations of trajectories, which will not be described in detail in this disclosure.

[0039] In some possible implementations, the second connecting assembly 400 includes a first connecting arm 410 and a second connecting arm 420, which rotate based on a pivot R5. The drive rod of the active support mechanism 430 rotates with the second connecting arm 420 based on a pivot R6, and the fixing part of the active support mechanism 430 rotates with the first connecting arm 410 based on a pivot R7, thereby changing the distance between R3 and R4.

[0040] The second connecting assembly 400 may further include a first mounting base 220 and a second mounting base 140. The sliding fit structure includes a groove 221 disposed on the first mounting base 220 and a sliding portion 413 disposed on the first end of the first connecting arm 410. The second end of the first connecting arm 410 rotates with the second mounting base 140 based on a pivot R4, and the second connecting arm 420 rotates with the first mounting base 220 based on a pivot R3. The first mounting base 220 can be installed on either the vehicle body or the door.

[0041] This disclosure does not limit the specific structure of the active support mechanism 430. Any mechanism that enables the first connecting arm 410 and the second connecting arm 420 to rotate around the pivot R5 to change the distance between R3 and R4 can be applied to this disclosure. It should be noted that the telescopic movement here can include a single pneumatic or electric rod moving in a straight line, or it can include a multi-link structure that is telescopic in a predetermined direction. To facilitate the connection between the first connecting arm 410 and the active support mechanism 430, the first connecting arm 410 can include a square connecting arm 411 and an extension connecting arm 412. The first connecting arm 410 is connected to the second mounting base 140, and the active support mechanism 430 is connected to the extension connecting arm 412.

[0042] In some possible implementations, such as Figure 15As shown, the active support mechanism 430 includes a lead screw 432, a telescopic sleeve 434, and a guide sleeve 433, which are sequentially arranged from the inside to the outside. The lead screw 432 can be driven by the drive motor 431 to rotate around its own axis. The lead screw 432 is provided with an external thread structure, and the telescopic sleeve 434 is provided with an internal thread structure that cooperates with the external thread structure, so as to convert the rotation of the lead screw 432 into the axial movement of the telescopic sleeve 434.

[0043] like Figures 3 to 5 as well as Figures 9 to 11 As shown, when the first connecting assembly 300 drives the door 100 to open or close, the two connection points R3 and R4 of the second connecting assembly 400 act as driven components in a four-bar linkage. The second connecting assembly 400 has a unique length R3-R4 based on the rotation angle position of the first connecting assembly 300. During the opening and closing process, the door opening and closing device adjusts the length between R3 and R4 to achieve the movement of the door 100 along a specific trajectory. From the XY plane, the first connecting arm 410 and the second connecting arm 420 rotate based on the pivot R5. Therefore, the first connecting arm 410 and the second connecting arm 420 form a triangle with the R3-R4 side. When the included angle between the first connecting arm 410 and the second connecting arm 420 changes, the length of the other side of the triangle, i.e., R3-R4, changes, thereby achieving variable length of the connection point.

[0044] from Figures 9 to 10 As the door 100 moves from fully open to fully closed, the sliding part 413 moves along trajectory L21 within the groove 221. The first connecting arm 410 and the second connecting arm 420 do not rotate relative to each other, and the connection length from R3 to R4 is fixed. At this time, the active support mechanism 430 applies a supporting force in its own extension direction, and the distance between R3 and R4 tends to increase in the direction of change. This causes the sliding part 413 to be biased to fit against the inner wall 221a of the double arc-shaped groove. Figures 10 to 11 The sliding part 413 moves along the trajectory L22 in the groove 221, the first connecting arm 410 and the second connecting arm 420 rotate relative to each other, and the connection length from R3 to R4 becomes longer. At this time, the active support mechanism 430 continues to apply support force in its own extension direction, and the distance between R3 and R4 tends to change in the direction of increase, which makes the sliding part 413 biased to fit against the inner wall 221b of the double arc groove.

[0045] from Figures 11 to 10 The door 100 moves from fully open to fully closed. The sliding part 413 moves along trajectory L22 within the groove 221. The first connecting arm 410 and the second connecting arm 420 are not connected, and the connection length from R3 to R4 shortens. At this time, the active support mechanism 430 applies an appropriate support force in its shortening direction, and the distance from R3 to R4 tends to change in the shortening direction. This causes the sliding part 413 to deviate and contact the inner wall 221b of the double arc-shaped groove. Figures 10 to 9The sliding part 413 moves along the trajectory L21 in the groove 221. The first connecting arm 410 and the second connecting arm 420 do not rotate relative to each other. The connection length from R3 to R4 is fixed. At this time, the active support mechanism 430 continues to apply an appropriate support force in its shortening direction. The distance from R3 to R4 tends to change in the shortening direction, which makes the sliding part 413 biased to contact the inner wall 221a of the double arc groove.

[0046] like Figure 13 As shown, in some possible embodiments, the first connecting arm 410 is configured with a rectangular cross-section along its length, and the second connecting arm 420 is configured with a cross-section along its length including opposing first plates 421 and second plates 422, and a third plate 423 connected to the first plates 421 and second plates 422 respectively. For example, the first connecting arm 410 has a square cross-section, and the second connecting arm 420 has a C-shaped cross-section. The projections of the first plates 421 and second plates 422 in the Z-direction coincide with the first connecting arm 410 and the active support mechanism 430, respectively, thus providing high Z-direction rigidity.

[0047] Figures 6 to 8 An exemplary first connecting component 300 is shown. The connection position between the first connecting component 300 and the door 100 may optionally be located at the center of gravity of the door 100. In this way, when the drive device 500 drives the first connecting component 300 to swing, the stability of the door 100 movement can be improved.

[0048] The first connecting assembly 300 may include a third connecting arm 320 and a fourth connecting arm 310. Considering that the first connecting assembly 300 needs to have high strength to support the weight of the door 100, in some possible embodiments, the fourth connecting arm 310 is configured such that its cross-section along its length includes opposing fourth plates 311, fifth plates 312, and a sixth plate 313 connected to the fourth plates 311 and fifth plates 312 respectively, wherein the projections of the fourth plates 311 and fifth plates 312 in the Z-direction coincide with the third connecting arm 320. This improves the Z-direction rigidity of the first connecting assembly 300 and its bending rigidity in the XY plane, thereby increasing the support strength of the first connecting assembly 300 and ensuring the stability of the door 100 during opening and closing.

[0049] The first connecting assembly 300 may further include a third mounting base 130 and a fourth mounting base 210. The first end of the third connecting arm 320 rotates with the third mounting base 130 based on a pivot R2. The fourth connecting arm 310 is disposed at the second end of the third connecting arm 320 and rotates with the fourth mounting base 210 based on a pivot R1. The fourth connecting arm 310 may have a toothed structure, and correspondingly, the driving device 500 may have a reduction mechanism including gears. The reduction mechanism engages with the toothed structure of the fourth connecting arm 310 to drive the first connecting assembly 300 to rotate. The toothed structure may be integrally formed on the fourth connecting arm 310, for example, integrally formed on the fifth plate 312.

[0050] Improving the stability of the door opening and closing process aims to ensure reliable engagement of the connecting device. To further enhance the reliability of the connecting device's engagement, in some possible implementations, such as... Figures 16 to 21 As shown, the vehicle body side engaging component 230 is provided with an engaging portion 2301, and the door side engaging component 110 includes a guide groove 1101, which includes a pair of opposing guide walls. The pair of guide walls can guide the engaging portion 2301 from both sides, allowing the door to move along a predetermined trajectory relative to the vehicle body when approaching the closed position, thereby improving the reliability of the engaging device during the engaging process. Optionally, the door side engaging component 110 is provided with a buffer hole 112b at the entrance end of the guide groove 1101, so that the door side engaging component 110 and the vehicle body side engaging component 230 have a certain buffering effect at the moment of separation to contact. In addition, the engaging portion 2301 may also have an arc portion 232a that matches the shape of the pair of guide walls, and the arc portion 232a is provided with a flexible buffer, which may be made of, for example, rubber.

[0051] The door side latch 110 and the vehicle body side latch 230 are described below by way of example.

[0052] The door-side engaging component 110 may include a door-side fixing bracket 111 and a door-side guide component 112. The door-side fixing bracket 111 and the door-side guide component 112 are connected by a door-side cylindrical pin 114. The door-side guide component 112 is provided with a guide arc surface 112a, which forms one of a pair of guide walls. The outer circumferential wall of the door-side cylindrical pin 114 forms the other of a pair of guide walls. During the engagement process, the arc portion 232a and the guide arc surface 112a on the door-side guide component 112 form a motion trajectory guide, and the arc portion 232a and the door-side cylindrical pin 114 also form a motion trajectory guide, so that the door 100 moves relative to the vehicle body 200 in a predetermined trajectory when it is near the closed position.

[0053] For ease of description, the following description uses the connection device on the sky side as an example. It should be understood that the connection device on the ground side can have the same structure, which will not be repeated here.

[0054] The door-side guide component 112 is positioned with the door-side fixed bracket 111 via positioning surfaces 111a and 111b, respectively. The door-side guide component 112 is fixedly connected to the door-side damping part 113 by fitting together, and is positioned with the door-side door top beam 150 on the door contact pressing side via the door-side damping part 113. The door-side guide component 112 and the door-side fixed bracket 111 are fixed by fastening component 115 based on mounting hole 112c. The door-side cylindrical pin 114 is installed with the door-side fixed bracket 111 based on mounting hole 111d. The door-side fixed bracket 111 has mounting hole 111c for fixed connection with the door top beam 150, thereby installing the door-side latching component 110 on the door top beam 150. The cylindrical surface of the door-side cylindrical pin 114 has a plastic material that rotates relative to the door-side fixed bracket 111, reducing friction during engagement.

[0055] The vehicle side guide component 233 is positioned with the vehicle side fixing bracket 231 via positioning surfaces 231a and 231b, respectively. The vehicle side guide component 233 and the vehicle side damping part 232 are fixedly connected by fitting together, and are positioned by pressing the vehicle side beam 250 with the bottom 232b of the vehicle side damping part. The vehicle side guide component 233 is positioned with the vehicle side fixing bracket 231 in the positioning hole 231c via the vehicle side cylindrical pin 234. The vehicle side fixing bracket 231 has mounting holes 231d and is fixed on the vehicle side beam 250, thereby realizing the installation of the vehicle side engaging component 230 on the vehicle side beam 250. The vehicle side fixing bracket 231 can be manufactured by conventional sheet metal processing. The door side damping part 113 and the vehicle side damping part 232 can be made of highly elastic materials such as rubber.

[0056] You can refer to this at the same time. Figure 1 and Figure 2 as well as Figure 4 and Figure 5 In some possible embodiments, the door opening and closing device may further include a damping rod 600, which includes a damping rod body portion 610 and a damping rod door portion 620. The damping rod body portion 610 rotates with the body 200 based on a pivot R8, and the damping rod door portion 620 rotates with the door 100 based on a pivot R9. The body 200, door 100, first connecting assembly 300, and damping rod 600 form a structurally stable quadrilateral structure. Optionally, the rotational connection point of the damping rod body portion 610 is located at a rearward position in the X direction of the body side beam 250, and the rotational connection point of the damping rod door portion 620 is located at a mid-rear position in the X direction of the door side beam 150.

[0057] The line connecting the rotational connection point of the damping rod body section 610 and the rotational connection point of the damping rod door section 620 is angled relative to the line connecting the rotational connection point of the damping rod door section 620 and the rotational connection point of the first connecting assembly 300 relative to the door. In such cases... Figure 4 and Figure 5In the upcoming locking position shown, the angle β between the line connecting R8 and R9 and the line connecting R2 and R9 is close to a right angle. At this time, the damping rod 600 can limit the swaying of the door 100 relative to the body 200 and improve the stability of the door 100 during the opening and closing movement.

[0058] According to a second aspect of the present disclosure, a vehicle is also provided, including the door opening and closing device of any of the above-described embodiments, and having all of its beneficial effects. Optionally, the first connecting component 300 is disposed at the midpoint of the Z-direction of the vehicle body top side beam 250 and the vehicle body bottom side beam 260, and the second connecting component 400 is disposed on the vehicle body bottom side beam 260, thereby providing higher strength to the connection between the door and the vehicle body.

[0059] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0060] It should also be noted that the various specific technical features described in the above embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0061] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. A vehicle door opening and closing device, characterized in that, The door opening and closing mechanism includes: A first connecting component and a second connecting component, the first connecting component and the second connecting component respectively having a first rotatable connection point relative to the vehicle body and a second rotatable connection point relative to the vehicle door; The first connecting component, the second connecting component, the vehicle body, and the door form a linkage mechanism, wherein one of the first connecting component and the second connecting component is configured to have a variable connection length, the connection length being the distance between the first rotating connection point and the second rotating connection point; wherein the connecting component with a variable connection length includes a sliding fit structure, and the door opens and closes according to a preset trajectory defined by the sliding fit structure; An active support mechanism includes an actively retractable support rod for providing support force that keeps the two mating parts in the sliding fit structure in contact during relative sliding.

2. The door opening and closing device according to claim 1, characterized in that, The sliding fit structure includes a groove and a sliding part that slides with the groove. The supporting force causes the sliding part to come into contact with at least one of the two opposite side walls of the groove during the sliding process. The groove includes a first arc-shaped groove and a second arc-shaped groove connected end to end. The first arc-shaped groove and the second arc-shaped groove are tangent to each other and have a smooth transition.

3. The door opening and closing device according to claim 1, characterized in that, The active support mechanism includes a lead screw, a telescopic sleeve, and a guide sleeve arranged sequentially from the inside to the outside. The lead screw can be driven by a drive motor to rotate around its own axis. The lead screw is provided with an external thread structure, and the telescopic sleeve is provided with an internal thread structure that cooperates with the external thread structure, so as to convert the rotation of the lead screw into the axial movement of the telescopic sleeve.

4. The door opening and closing device according to claim 1, characterized in that, The second connecting component has a variable connection length and includes a first connecting arm and a second connecting arm, which are rotatably connected; wherein: The telescopic rod of the active support mechanism is rotatably connected to the second connecting arm, and the fixed part of the active support mechanism is rotatably connected to the first connecting arm; or The second connecting assembly further includes a first mounting base and a second mounting base. The sliding fit structure includes a groove disposed on the first mounting base and a sliding portion disposed on the first end of the first connecting arm. The second end of the first connecting arm is rotatably connected to the second mounting base, and the second connecting arm is rotatably connected to the first mounting base.

5. The door opening and closing device according to claim 4, characterized in that, The first connecting arm is constructed with a rectangular cross-section along its length, and the second connecting arm is constructed with a cross-section along its length including a first plate, a second plate, and a third plate connected to the first plate and the second plate respectively. The projections of the first plate and the second plate in the Z direction coincide with the first connecting arm and the active support mechanism respectively.

6. The door opening and closing device according to claim 1, characterized in that, The first connecting component is configured to be driven by a drive motor and rotate about a rotation point; the first connecting component includes a third connecting arm and a fourth connecting arm, wherein: The fourth connecting arm is constructed such that its cross-section along its length includes opposing fourth and fifth plates, and a sixth plate connected to the fourth and fifth plates respectively, wherein the projections of the fourth and fifth plates in the Z-direction coincide with the third connecting arm; or The first connecting assembly further includes a third mounting base and a fourth mounting base. A first end of the third connecting arm is rotatably connected to the third mounting base, and a fourth connecting arm is disposed at a second end of the third connecting arm and rotatably connected to the fourth mounting base. The fourth connecting arm forms a drive gear; or The first connecting component is connected to the door at the center of mass of the door.

7. The door opening and closing device according to claim 1, characterized in that, The door opening and closing device further includes a door-side engaging component and a body-side engaging component, which are configured to engage with each other when the door is in the closed position. The body-side engaging component is provided with an engaging portion, and the door-side engaging component includes a guide groove, which includes a pair of opposing guide walls. The door-side engaging component is provided with a buffer hole at the entrance end of the guide groove, and / or the engaging portion has an arc portion that matches the shape of the pair of guide walls, and the arc portion is provided with a flexible buffer.

8. The door opening and closing device according to claim 7, characterized in that, The door-side latching component includes a door-side fixing bracket and a door-side guide component. The door-side fixing bracket and the door-side guide component are connected by a door-side cylindrical pin. The door-side guide component is provided with a guide arc surface, which forms one of the pair of guide walls. The outer circumferential wall of the door-side cylindrical pin forms the other of the pair of guide walls.

9. The door opening and closing device according to claim 1, characterized in that, The door opening and closing device further includes a damping rod, which comprises a damping rod body portion and a damping rod door portion. The damping rod body portion is rotatably connected to the vehicle body, and the damping rod door portion is rotatably connected to the door. The vehicle body, the door, the first connecting assembly, and the damping rod form a quadrilateral structure. The line connecting the rotating connection point of the damping rod body section and the rotating connection point of the damping rod door section is angled to the line connecting the rotating connection point of the damping rod door section and the rotating connection point of the first connecting assembly relative to the door; or The rotation connection point of the damping rod on the vehicle body is located at the rearward position in the X direction of the vehicle body roof beam, and the rotation connection point of the damping rod on the door is located at the middle-rear position in the X direction of the door roof beam.

10. A vehicle, characterized in that, The vehicle door opening and closing device includes any one of claims 1-9, wherein the first connecting component is disposed at the midpoint of the vehicle body top side beam and the vehicle body bottom side beam in the Z direction, and the second connecting component is disposed on the vehicle body bottom side beam.

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