Automobile and side sliding door structure thereof

Abstract

The present invention relates to the field of automobile technology, and discloses an automobile and a side sliding door structure thereof, wherein the side sliding door structure includes a door body, which is slidably connected to the vehicle body; further includes a first connecting rod assembly and a second connecting rod assembly, the first connecting rod assembly including a first fixed hinge, a first door hinge, and a first connecting rod; the second connecting rod assembly including a second fixed hinge, a second door hinge, and a second connecting rod; the second door hinge including a second door hinge seat, the second door hinge seat being provided with a first sliding groove, the first connecting rod being provided with a first sliding shaft at one end facing the second door hinge seat, the first sliding shaft being slidably connected to the first sliding groove, and the first sliding shaft being fixedly connected to a cam on the side facing away from the second connecting rod, the arc-shaped outer surface of the cam abutting against the door body. During the opening process, the door body adjusts the vehicle body posture through the cam, which can maintain the angle between the door body and the vehicle body unchanged during the opening process, so that the opening of the door body is less likely to interfere with other vehicle body components.

Description

Technical Field

[0001] The present invention relates to the technical field of automobiles, and in particular to an automobile and a side sliding door structure thereof. Background Art

[0002] The door frame is a frame with an entrance and exit on the vehicle. The entrance and exit are the necessary paths for passengers to enter and exit the cabin and to pick up and put items. The common door form used to cover the entrance and exit of vans is a sliding door. The sliding door before this application was opened and closed by translation. The sliding door four-bar linkage mechanism connecting the sliding door and the door frame can only slide the sliding door to open in a direction parallel to the door frame. At present, the opening of the sliding door is generally a structure in which a single motor drives a single connecting rod. The sliding door four-bar linkage mechanism of this structure cannot achieve door posture adjustment, that is, to ensure that the door and the car body maintain an angle after opening, and the door and the car body are parallel. This effect can be achieved when two motors drive two connecting rods respectively, but the cost is increased, the structure is complex, and mechanical failure is prone to occur. Summary of the Invention

[0003] The purpose of the present invention is to provide a car and its side sliding door structure, in which the door body adjusts the posture of the car body through a cam during the opening process, and can keep the angle between the door body and the car body unchanged during the opening process, so that the opening of the door body is not likely to interfere with other parts of the car body.

[0004] In order to achieve the above object, the present invention provides a sliding door structure, comprising:

[0005] a door body, the door body being slidably connected to the vehicle body;

[0006] a first connecting rod assembly, the first connecting rod assembly comprising a first fixed hinge, a first door hinge, and a first connecting rod, wherein two ends of the first connecting rod are rotatably connected to the first fixed hinge and the first door hinge, the first door hinge is fixed to the door body, and the first fixed hinge is fixed to the vehicle body;

[0007] a second connecting rod assembly, the second connecting rod assembly comprising a second fixed hinge, a second door hinge, and a second connecting rod, the two ends of the second connecting rod being rotatably connected to the second fixed hinge and the second door hinge, the second door hinge being fixed to the door body, and the second fixed hinge being fixed to the vehicle body;

[0008] The first fixed hinge includes a first fixed rotating shaft, the first fixed rotating shaft is connected to a driving device, and the driving device drives the first fixed rotating shaft to rotate and drives the first connecting rod to rotate about the first fixed rotating shaft as the axis;

[0009] The second door hinge includes a second door hinge seat, a first sliding groove is provided on the second hinge seat, a first sliding shaft is provided at one end of the first connecting rod facing the second door hinge seat axis, the first sliding shaft is slidably connected to the first sliding groove, and a cam is fixedly connected to the side of the first sliding shaft facing away from the second connecting rod, and the arc-shaped outer surface of the cam abuts against the door body.

[0010] Compared with the prior art, the side sliding door structure of the embodiment of the present invention has the following beneficial effects: when the door body is opened, the driving mechanism drives the first fixed rotating shaft to rotate, the first fixed rotating shaft drives the first connecting rod and drives the door body to slide and open accordingly, and the second door hinge moves with the vehicle door, driving the second connecting rod to rotate as well, thereby ensuring the stability of the door body during the opening process. A cam is provided at the end of the second connecting rod, and the cam also rotates when the second connecting rod rotates. The arc-shaped outer surface of the cam rotates along the inner surface of the door body. The cam is used to supplement the distance between the first sliding shaft and the door body after it moves along the first sliding groove, so that the door body can adjust the vehicle body posture through the cam during the opening process, and the angle between the door body and the vehicle body can be kept unchanged during the opening process, so that the opening of the door body is less likely to interfere with other parts of the vehicle body.

[0011] In the sliding door structure of the embodiment of the present invention, a first roller is provided on the door body, the first roller corresponds to the position of the cam, and the cam abuts against the first roller.

[0012] In the side sliding door structure of an embodiment of the present invention, the cam includes a front portion close to the first sliding axis and a rear portion away from the first sliding axis. When the door body is opened, the front portion abuts against the door body, and in the second half of the door body opening, the rear portion abuts against the door body.

[0013] In the side sliding door structure of an embodiment of the present invention, a tension spring is provided on the second door hinge seat to pull the first sliding shaft to move in the first sliding groove, one end of the tension spring is fixed to the second door hinge seat, and the other end thereof is fixed to the first sliding shaft.

[0014] In the side sliding door structure of the embodiment of the present invention, the first door hinge includes a first door rotating shaft and a first door hinge seat, the first door rotating shaft is rotatably connected to the first door hinge seat, and the first door hinge seat is fixed to the door body.

[0015] In the sliding door structure of the embodiment of the present invention, a torsion spring is mounted on one end of the first door-mounted rotating shaft extending from the first door-mounted hinge seat, and two ends of the torsion spring are respectively in contact with the door body and the first connecting rod.

[0016] In the side sliding door structure of the embodiment of the present invention, a strip lock is provided in the direction of the vehicle body toward the door body, and a retaining clip that cooperates with the strip lock is provided on the second connecting rod. When the door body is opened, the strip lock is engaged with the retaining clip to maintain the posture of the door body.

[0017] In the side sliding door structure of an embodiment of the present invention, a track bracket is provided on the side edge of the vehicle body close to the second door hinge, and a second sliding groove is provided on the track bracket. The second sliding groove matches the moving trajectory of one end of the door body close to the track bracket, and a second roller cooperating with the second sliding groove is provided on the edge of the door body close to the track bracket corresponding to the second sliding groove.

[0018] The side sliding door structure of an embodiment of the present invention is provided with a lock on one side edge of the door body, and a lock buckle cooperating with the lock is provided on the edge of the vehicle body close to the lock, and the lock buckle and the lock fix the door body to the vehicle body when the door body is closed.

[0019] The present invention provides an automobile, which includes the side sliding door structure described in the above embodiment.

[0020] Compared with the prior art, the automobile of the embodiment of the present invention has the following beneficial effects: the automobile includes a body and a door body connected to the body and slidingly opening. When the door body is opened, the driving mechanism drives the first fixed rotating shaft to rotate, the first fixed rotating shaft drives the first connecting rod and drives the door body to slide open accordingly, and the second door hinge moves with the car door, driving the second connecting rod to rotate as well, thereby ensuring the stability of the door body's posture during the opening process. A cam is provided at the end of the second connecting rod, and the cam also rotates when the second connecting rod rotates. The arc-shaped outer surface of the cam rotates along the inner surface of the door body. The cam is used to supplement the distance of the first sliding shaft away from the door body after it moves along the first sliding groove, so that the door body can adjust the posture of the vehicle body through the cam during the opening process, and the angle between the door body and the vehicle body can be kept unchanged during the opening process, so that the opening of the door body is not likely to interfere with other parts of the vehicle body.

[0021] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a structural schematic diagram of a side sliding door structure according to an embodiment of the present invention;

[0023] Figure 2 is a structural schematic diagram of the side sliding door structure of an embodiment of the present invention from another direction;

[0024] Figure 3 is a schematic structural diagram of a side sliding door structure of an embodiment of the present invention when closed;

[0025] Figure 4 is a structural schematic diagram of the side sliding door structure during the opening process of an embodiment of the present invention;

[0026] Figure 5 is a schematic structural diagram of a fully opened side sliding door structure according to an embodiment of the present invention;

[0027] Figure 6 2 is a schematic structural diagram of a cam portion of a side sliding door structure according to an embodiment of the present invention;

[0028] In the figure, 1. door body; 11. first roller; 12. first hook; 13. lock; 14. second roller; 2. vehicle body; 21. strip lock; 22. track bracket; 23. second sliding groove; 3. first fixed hinge; 31. first fixed rotating shaft; 4. first door hinge; 41. first door rotating shaft; 411. torsion spring; 42. first door hinge seat; 5. first connecting rod; 51. second hook; 6. driving device; 7. second fixed hinge; 8. second door hinge; 81. second door hinge seat; 811. tension spring; 82. first sliding groove; 83. first sliding shaft; 9. second connecting rod; 91. retaining clip; 10. cam; 101. front; 102. rear. DETAILED DESCRIPTION

[0029] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0030] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0031] In the description of the present invention, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The presence of "second" or "second" is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0032] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0033] like Figure 3 As shown, a side sliding door structure according to a preferred embodiment of the present invention includes a door body 1 and a vehicle body 2 , wherein the door body 1 is slidably connected to the vehicle body 2 .

[0034] like Figure 1 and Figure 2 As shown, a side sliding door structure according to a preferred embodiment of the present invention further includes a first connecting rod assembly, which includes a first fixed hinge 3, a first door hinge 4 and a first connecting rod 5. The two ends of the first connecting rod 5 are respectively rotatably connected to the first fixed hinge 3 and the first door hinge 4. The first door hinge 4 is fixed to the door body 1, and the first fixed hinge 3 is fixed to the vehicle body 2.

[0035] The first fixed hinge 3 includes a first fixed rotating shaft 31, and one end of the first connecting rod 5 rotates toward the first fixed hinge 3 and is connected to the first fixed rotating shaft 31. The first fixed rotating shaft 31 is connected to a driving device 6, and the driving device 6 drives the first fixed rotating shaft 31 to rotate and drives the first connecting rod 5 to rotate with the first fixed rotating shaft 31 as the axis.

[0036] When the door 1 is opened, the drive device 6 rotates the first fixed shaft 31. The rotation of the first shaft drives the first connecting rod 5 to rotate about the first fixed shaft 31. The end of the first connecting rod 5 connected to the door 1 drives the door 1 to slide open. When the door 1 is closed, the drive device 6 drives the first fixed shaft 31 to rotate in the opposite direction, driving the door 1 to close in the opposite direction. Specifically, the drive device 6 includes a motor.

[0037] like Figure 1 and Figure 2 As shown, a side sliding door structure according to a preferred embodiment of the present invention further includes a second connecting rod assembly, which includes a second fixed hinge 7, a second door hinge 8, and a second connecting rod 9. The two ends of the second connecting rod 9 are respectively rotatably connected to the second fixed hinge 7 and the second door hinge 8. The second door hinge 8 is fixed to the door body 1, and the second fixed hinge 7 is fixed to the vehicle body 2.

[0038] like Figure 1 and Figure 2 As shown, the second door hinge 8 includes a second door hinge seat 81, a first sliding groove 82 is provided on the second door hinge seat 81, and a first sliding shaft 83 is provided at one end of the first connecting rod 5 facing the second door hinge seat 81. The first sliding shaft 83 is slidably connected to the first sliding groove 82, and a cam 10 is fixedly connected to the side of the first sliding shaft 83 facing away from the second connecting rod 9, and the arc-shaped outer surface of the cam 10 abuts against the door body 1.

[0039] like Figure 3 、 Figure 4 and Figure 5 As shown, when the first connecting rod 5 drives the door body 1 to slide, it first drives the end of the door body 1 closest to the first door hinge 4 away from the vehicle body 2. Only after the door body 1 begins to move does it drive the end closest to the second door hinge 8 to move. At this point, a fixed angle is formed between the door body 1 and the vehicle body 2. When the vehicle body 2 drives the second door hinge 8 to move with the door body 1, it also drives the second connecting rod 9 to rotate, ensuring the stability of the door body 1 during the opening process and maintaining the fixed angle between the door body 1 and the vehicle body 2. The end of the second connecting rod 9 is provided with a cam 10. When the second connecting rod 9 rotates, the cam 10 also rotates with it. The curved outer surface of the cam 10 rotates along the inner surface of the door body 1. During the opening process of the door body 1, because the first sliding shaft 83 needs to slide in the first sliding groove 82, the distance between the first sliding shaft 83 and the door body 1 changes. In the absence of the cam 10, the angle between the door body 1 and the vehicle body 2 would also change. The cam 10 in this application is used to supplement the distance that the first sliding shaft 83 moves away from the door body 1 after moving along the first sliding groove 82, so that the door body 1 can adjust the posture of the vehicle body 2 through the cam 10 during the opening process, and can keep the angle between the door body 1 and the vehicle body 2 unchanged during the opening process, so that the opening of the door body 1 is not likely to interfere with other parts of the vehicle body 2.

[0040] like Figure 6 As shown, in some embodiments of the present invention, a first roller 11 is provided on the door body 1. The first roller 11 corresponds to the position of the cam 10. The cam 10 abuts against the first roller 11. When the edge of the cam 10 moves along the first roller 11, the first roller 11 also moves therewith, thereby reducing the wear of the cam 10, increasing the service life of the cam 10, and further ensuring the reliability of the device.

[0041] like Figure 6As shown, in some embodiments of the present invention, the cam 10 includes a front portion 101 close to the first sliding shaft 83 and a rear portion 102 away from the first sliding shaft 83. When the door body 1 is closed, the front end of the front portion 101 of the cam 10 abuts against the door body 1, the front portion 101 of the first half of the opening abuts against the door body 1, and the rear portion 102 of the second half of the opening of the door body 1 abuts against the door body 1. When the door body 1 is fully opened, the rear end of the rear portion 102 of the cam 10 abuts against the door body 1. Specifically, at the beginning of the opening of the door body 1, the end of the door body 1 close to the first door hinge 4 is lifted. At this time, the front part 101 of the cam 10 moves along the door body 1. The size of the cam 10 matches the distance between the first sliding shaft 83 and the door body 1, that is, the angle between the door body 1 and the vehicle body 2 is in the process of changing. When the first connecting rod 5 and the second connecting rod 9 rotate to be parallel to each other, the door body 1 and the vehicle body 2 reach a preset fixed angle, and the angle between the door body 1 and the vehicle body 2 no longer changes; when the first connecting rod 5 and the second connecting rod 9 are parallel, the rear part 102 of the cam 10 begins to move along the door body 1, gradually lifting the end of the door body 1 close to the second door hinge 8, ensuring the constant angle between the door body 1 and the vehicle body 2, and maintaining the parallelism of the first connecting rod 5 and the second connecting rod 9. When the door body 1 is fully opened, that is, when the first connecting rod 5 and the second connecting rod 9 rotate to the extreme ends, the rear end of the cam 10 lifts the door body 1 close to the end of the second door hinge 8, so that the door body 1 and the vehicle body 2 are finally parallel, so that the posture of the door body 1 when fully opened is stable, without interfering with other parts on the vehicle body 2, and the distance between each position of the door body 1 and the vehicle body 2 is also equal.

[0042] like Figure 1 and Figure 2 As shown, in some embodiments of the present invention, a tension spring 811 is provided on the second door-mounted hinge seat 81 to pull the first sliding shaft 83 within the first sliding groove 82. One end of the tension spring 811 is fixed to the second door-mounted hinge seat 81, and the other end is fixed to the first sliding shaft 83. The tension spring 811 connects the second door-mounted hinge seat 81 and the first sliding shaft 83. The cam 10 is also in contact with the first roller 11 due to the force of the tension spring 811. When the cam 10 and the first roller 11 rotate relative to each other, the position change between the cam 10 and the roller drives the first sliding shaft 83 to move within the first sliding groove 82, causing the first sliding shaft 83 to change position. When the first sliding shaft 83 reaches a predetermined position and needs to return, the tension spring 811 can pull the second sliding shaft back, maintaining contact between the cam 10 and the first roller, and keeping the position of the first sliding shaft 83 aligned with the rotational position of the cam 10.

[0043] like Figure 1 and Figure 2As shown, in some embodiments of the present invention, the first door hinge 4 includes a first door hinge shaft 41 and a first door hinge seat 42. The first door hinge shaft 41 is rotatably connected to the first door hinge seat 42, and the first door hinge seat 42 is fixed to the door body 1. During the opening process of the door body 1, the first connecting rod 5 pulls the first door hinge shaft 41 to move and rotate. During the movement of the first door hinge shaft 41, the first door hinge seat 42 and the door body 1 are driven to move. The rotation process of the first door hinge shaft 41 can adjust the posture of the door body 1, so that the end of the door body 1 close to the first door hinge 4 remains stable during the opening process.

[0044] like Figure 1 and Figure 2 As shown, in some embodiments of the present invention, a torsion spring 411 is mounted on one end of the first door hinge seat 42 extending from the first door hinge seat 42, and the two ends of the torsion spring 411 respectively abut against the door body 1 and the first connecting rod 5. Due to the presence of a gap in the connecting rod mechanism, there is a play between the door body 1 and the connecting rod after actual installation, resulting in an unstable trajectory of the door body 1 during movement. After adding the torsion spring 411, the door body 1 can always be deflected to a predetermined trajectory, keeping the angle of the door body 1 fixed, facilitating the closing and opening of the door body 1, and keeping the door body 1 stable, with reduced shaking. Specifically, a first hook 12 is provided on the door body 1, and a second hook 51 is provided on the first connecting rod 5. The two ends of the torsion spring 411 respectively abut against the first hook 12 and the second hook 51, which are firmly fixed and can better exert force on the door body 1 and the first connecting rod 5.

[0045] like Figure 3 and Figure 5 As shown, in some embodiments of the present invention, a strip lock catch 21 is provided on the vehicle body 2 in the direction toward the door body 1, and a retaining clip 91 is provided on the second connecting rod 9 to cooperate with the strip lock catch 21. When the door body 1 is opened, the strip lock catch 21 is engaged in the retaining clip 91 to maintain the posture of the door body 1. When the door body 1 is opened to the end, the strip lock catch 21 is engaged in the retaining clip 91. At a specified slope, the door body 1 will not slide back under the influence of gravity of the door body 1 and accidentally close, and the door body 1 can be maintained in the fully open position. Specifically, a retaining torsion spring 411 is provided in the retaining clip 91 to continuously output pressure to the retaining clip 91, so that it keeps the strip lock catch 21 tight when the strip lock catch 21 is engaged.

[0046] like Figure 1 and Figure 2As shown, in some embodiments of the present invention, a track bracket 22 is provided on one side edge of the vehicle body 2 close to the second door hinge 8, and a second sliding groove 23 is provided on the track bracket 22, which matches the moving trajectory of one end of the door body 1 close to the track bracket 22. Specifically, since the angle between the door body 1 and the vehicle body 2 changes in the initial stage of opening, the initial stage of the second sliding groove 23 extends toward the vehicle body 2. The angle between the door body 1 and the vehicle body 2 does not change in the second half of opening, so the rear stage of the second sliding groove 23 matches the fixed angle. A second roller 14 that cooperates with the second sliding groove 23 is provided on the edge of the door body 1 near the track bracket 22, corresponding to the second sliding groove 23. Specifically, in the first half of opening of the door body 1, the second roller 14 rotates a certain angle toward the vehicle body 2 along with the end of the door body 1 near the second door hinge 8. At this time, the second roller 14 moves along the initial stage of the second sliding groove 23. After the angle between the door body 1 and the vehicle body 2 is fixed, the second roller 14 moves along the rear stage of the second sliding groove 23 until it moves out of the second sliding groove 23. The provision of the second sliding groove 23 and the second roller 14 maintains the accuracy of the opening of the door body 1 and prevents interference between the rear door body 1 and the front door body 1 during movement. On the other hand, after the door body 1 is closed, in order to prevent the door body 1 from tilting up at the end close to the second door hinge and failing to close the door body 1, a track bracket 22 and a second sliding groove 23 are set to restrain each other with the second roller 14, which can prevent the door body 1 from being pushed open in the car and reduce the cost of setting up multiple locks.

[0047] like Figure 1 and Figure 2 As shown, in some embodiments of the present invention, a lock 13 is provided on one side edge of the door body 1, and a lock buckle cooperating with the lock 13 is provided on the edge of the vehicle body 2 near the lock 13. The lock buckle and the lock 13 fix the door body 1 to the vehicle body 2 when the door body 1 is closed. The lock 13 and the track bracket 22 cooperate with each other to fix both ends of the door body 1, thereby ensuring the stability of the door body 1 when closed.

[0048] The present invention provides a vehicle including the side sliding door structure of the above-described embodiment. The vehicle includes a vehicle body 2 and a door body 1 connected to the vehicle body 2 and configured to slide open. When the door body 1 is opened, a drive device 6 rotates a first rotating shaft, which in turn drives a first connecting rod 5 and thereby drives the door body 1 to slide open. A second hinge 8 rotates with the door body 1, driving a second connecting rod 9 to also rotate, thereby ensuring the stability of the door body 1 during opening. A cam 10 is disposed at the end of the second connecting rod 9. The cam 10 rotates with the rotation of the second connecting rod 9, and the curved outer surface of the cam 10 rotates along the inner surface of the door body 1.

[0049] The working process of the present invention is as follows: when the door body 1 is initially opened, the door body 1 is lifted up at one end close to the first door hinge 4. At this time, the front part 101 of the cam 10 moves along the door body 1. The size of the cam 10 matches the distance between the first sliding shaft 83 and the door body 1, that is, the angle between the door body 1 and the vehicle body 2 is in the process of changing. When the first connecting rod 5 and the second connecting rod 9 rotate to be parallel to each other, the door body 1 and the vehicle body 2 reach a preset fixed angle, and the angle between the door body 1 and the vehicle body 2 no longer changes; when the first connecting rod 5 and the second connecting rod 9 are parallel, the rear part 102 of the cam 10 begins to move along the door body 1, gradually lifting the end of the door body 1 close to the second door hinge 8, ensuring the constant angle between the door body 1 and the vehicle body 2, and maintaining the parallelism of the first connecting rod 5 and the second connecting rod 9. When the door body 1 is fully opened, that is, when the first connecting rod 5 and the second connecting rod 9 rotate to the extreme ends, the rear end of the cam 10 lifts the door body 1 close to the end of the second door hinge 8, so that the door body 1 and the vehicle body 2 are finally parallel, so that the posture of the door body 1 when fully opened is stable, without interfering with other parts on the vehicle body 2, and the distance between each position of the door body 1 and the vehicle body 2 is also equal.

[0050] In summary, an embodiment of the present invention provides a car and a side sliding door structure thereof, which adopts a cam 10 to supplement the distance between the first sliding shaft 83 and the door body 1 after it moves along the first sliding groove 82, so that the door body 1 can adjust the posture of the vehicle body 2 through the cam 10 during the opening process, and can keep the angle between the door body 1 and the vehicle body 2 unchanged during the opening process, so that the opening of the door body 1 is not likely to interfere with other parts of the vehicle body 2.

[0051] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A side sliding door structure, characterized in that: include: a door body, said door body being slidably connected to the vehicle body; a first connecting rod assembly, the first connecting rod assembly comprising a first fixed hinge, a first door hinge, and a first connecting rod, wherein two ends of the first connecting rod are rotatably connected to the first fixed hinge and the first door hinge, the first door hinge is fixed to the door body, and the first fixed hinge is fixed to the vehicle body; a second connecting rod assembly, the second connecting rod assembly comprising a second fixed hinge, a second door hinge, and a second connecting rod, the two ends of the second connecting rod being rotatably connected to the second fixed hinge and the second door hinge, the second door hinge being fixed to the door body, and the second fixed hinge being fixed to the vehicle body; The first fixed hinge includes a first fixed rotating shaft, the first fixed rotating shaft is connected to a driving device, and the driving device drives the first fixed rotating shaft to rotate and drives the first connecting rod to rotate about the first fixed rotating shaft as the axis; The second door hinge includes a second door hinge seat, a first sliding groove is formed on the second door hinge seat, a first sliding shaft is provided on one end of the second connecting rod facing the second door hinge seat, the first sliding shaft is slidably connected to the first sliding groove, a cam is fixedly connected to the side of the first sliding shaft facing away from the second connecting rod, the arc-shaped outer surface of the cam abuts against the door body, a tension spring is provided on the second door hinge seat to pull the first sliding shaft to move in the first sliding groove, one end of the tension spring is fixed to the second door hinge seat, and the other end of the tension spring is fixed to the first sliding shaft; The cam includes a front portion close to the first sliding shaft and a rear portion away from the first sliding shaft. When the door body is opened, the front portion abuts against the door body, and in the second half of the door body opening, the rear portion abuts against the door body. The rearmost end of the cam is used to lift the end of the door body close to the second door hinge so that the door body is finally parallel to the vehicle body. A track bracket is provided on the side edge of the vehicle body close to the second door hinge, and a second sliding groove is provided on the track bracket. The second sliding groove matches the moving trajectory of one end of the door body close to the track bracket, and a second roller cooperating with the second sliding groove is provided on the edge of the door body close to the track bracket corresponding to the second sliding groove; the front half of the second sliding groove extends toward the vehicle body, the rear half of the second sliding groove matches the fixed angle, and the second roller moves along the rear section of the second sliding groove until it moves out of the second sliding groove.

2. The sliding door structure according to claim 1, characterized in that: The door body is provided with a first roller, the position of the first roller corresponds to the position of the cam, and the cam abuts against the first roller.

3. The sliding door structure according to claim 1, characterized in that: The first door hinge includes a first door rotating shaft and a first door hinge seat, the first door rotating shaft is rotatably connected to the first door hinge seat, and the first door hinge seat is fixed on the door body.

4. The sliding door structure according to claim 3, characterized in that: A torsion spring is sleeved on one end of the first door-following rotating shaft extending out of the first door-following hinge seat, and two ends of the torsion spring are respectively in contact with the door body and the first connecting rod.

5. The sliding door structure according to claim 1, characterized in that: The vehicle body is provided with a strip lock buckle in the direction toward the door body, and the second connecting rod is provided with a retaining clip that cooperates with the strip lock buckle. When the door body is opened, the strip lock buckle is clamped in the retaining clip to maintain the posture of the door body.

6. The sliding door structure according to claim 1, characterized in that: A lock is provided on one side edge of the door body, and a lock buckle cooperating with the lock is provided on the edge of the vehicle body close to the lock. The lock buckle and the lock fix the door body to the vehicle body when the door body is closed.

7. An automobile, characterized in that: The invention comprises the side sliding door structure according to any one of claims 1 to 6.

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