A vehicle scissor door and method of opening the same

Abstract

The application discloses a vehicle side swing door and an opening method thereof, which comprises a rotating arm assembly, an opening and closing guide assembly arranged on a closed end of a door and a vehicle body, and a track guide assembly connected between the door and the rotating arm assembly; the rotating arm assembly comprises a driving rotating arm and a driven rotating arm; one end of the driving rotating arm is connected with a driving unit and is rotatably arranged on the vehicle body; the other end of the driving rotating arm is rotatably connected with and actuates the door; one end of the driven rotating arm is rotatably arranged on the vehicle body, and a door side end of the driven rotating arm is rotatably connected with the track guide assembly; the track guide assembly applies a constraint force to a front closed end of the door and keeps a rear closed end of the door to perform a preparation opening operation or a closing operation in a posture of being outwardly inclined in a vehicle width direction; the opening and closing guide assembly is inclined to an unobstructed posture during the opening operation and is separated from each other along with continuous operation of the driving rotating arm; and the opening and closing guide assembly is mutually engaged during the closing operation.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle door equipment, in particular to a vehicle side swing door and an opening method thereof. BACKGROUND

[0002] Side swing doors are commonly used in various vehicles, especially in passenger cars, buses, MPVs, and commercial vehicles. They swing around a vertical axis, rotate along a predetermined movement path by a driving unit of the swing door, and there are various types of side swing doors, including front and rear side door rotation opposite opening, front and rear side door sliding opposite opening, front door rotation side opening, and rear door sliding side opening.

[0003] At present, electric side sliding doors have become a standard configuration of high-end vehicles, and are operated by various methods such as remote control, touch button, and gesture control, providing a convenient opening method. The driving unit of the side swing door mainly includes an actuator and a transmission mechanism. The actuator can be a fluid cylinder (such as a gas cylinder or a hydraulic cylinder) or an electric motor. The transmission mechanism transmits the power of the actuator to the swing door, including multiple transmission components. The upper and lower rotating links are one of the core components of the side swing door. They are respectively located at the upper and lower parts of the door and are connected to the door and the vehicle body through hinges or similar mechanisms. When the door needs to be opened or closed, these links will rotate around their fixed points, thereby driving the door to swing.

[0004] However, the existing automobile side swing door still has the risk of collision between the door and the vehicle body or other obstacles at the initial opening and the end of closing, or the problem of shaking and noise due to the instability of the closing position of the side swing door during vehicle driving. Therefore, the action at the initial opening and the end of closing of the door is unreliable, and even cannot be completely closed, resulting in that the door cannot be completely locked or smooth in the above action stage. Therefore, a stable and reliable vehicle side swing door with smooth opening is needed. SUMMARY

[0005] In view of the deficiencies in the prior art, the purpose of the present application is to provide a vehicle side swing door and an opening method thereof.

[0006] The above technical purpose of the present application is achieved by the following technical scheme: a vehicle side swing door, comprising a rotating arm assembly for driving the door to perform opening and closing actions relative to the opening of the vehicle body, an opening and closing guide assembly arranged at the closed end of the door and the vehicle body, and a trajectory guide assembly connected between the door and the rotating arm assembly.

[0007] The rotating arm assembly comprises a driving rotating arm and a driven rotating arm, one end of the driving rotating arm is connected with a driving unit and is rotatably arranged on a vehicle body, the other end of the driving rotating arm is rotatably connected with and actuates a vehicle door, one end of the driven rotating arm is rotatably arranged on the vehicle body, and a door side end of the driven rotating arm is rotatably connected with a track guiding assembly, and the distance between the door side end of the driven rotating arm and the vehicle door is adjustably rotatably connected, and the distance changes with the rotation of the driving rotating arm;

[0008] The track guiding assembly applies a constraint force to the front closing end of the vehicle door and keeps the rear closing end of the vehicle door in a posture of being inclined outward in the vehicle width direction to perform an opening operation or a closing operation.

[0009] The opening and closing guiding assembly is tilted to an unobstructed posture following the swing of the vehicle door in the opening operation, and is separated from each other with the continuous operation of the driving rotating arm, and the opening and closing guiding assembly is gradually abutted with each other in the vehicle width direction and the closing direction of the vehicle body following the swing of the vehicle door in the closing operation.

[0010] Further, the track guiding assembly comprises a track seat fixed on the front side of the vehicle door, an adjusting arm rotatably arranged between the track seat and the door side end of the driven rotating arm, and a telescopic rod connected between the driven rotating arm and the rear side of the vehicle door, the driven rotating arm has a guide shaft constrained to slide in the track seat, the door side rotating end of the adjusting arm is at least close to the guide shaft from the opening operation, and the telescopic rod applies an acting force to actuate the adjusting arm to rotate with the driven rotating arm.

[0011] Further, the telescopic rod applies a smooth linear acting force in the opening process.

[0012] Further, the track seat is provided with a lifting segment corresponding to the opening operation and the closing operation, and a U-shaped segment corresponding to the vehicle door from the lifting to the full opening and from the full opening to the closing, the lifting segment and the U-shaped segment are both arranged in an arc shape, the U-shaped segment has a bending trend towards the inner side of the vehicle width, and the lifting segment extends to the outer side of the vehicle width along the end of the U-shaped segment.

[0013] Further, the rotating connection ends of the driving rotating arm and the driven rotating arm on the vehicle door and the vehicle body are arranged in a staggered manner about the front and back of the vehicle body, and the door side rotating end of the driven rotating arm and the adjusting arm is arranged closer to the front closing end of the vehicle door than the door rotating end of the driving rotating arm.

[0014] Further, the vehicle door is arranged in a posture parallel to the vehicle body to approach the rear part of the opening of the vehicle body in the full opening state, and the rotating arm assembly is rotated to the rear side of the opening of the vehicle body; the rotating arm assembly is folded together between the opening of the vehicle body and the vehicle door in the full closing state of the vehicle door.

[0015] Further, the opening and closing guide assembly comprises a guide block arranged on the front closing end of the door and a guide seat arranged on the front closing end of the vehicle body, the guide seat has an outer guide portion and an inner guide portion arranged in the front-rear direction of the vehicle body, and the outer guide portion restricts the guide block in the outboard direction of the vehicle width, and the inner guide portion supports the guide block in the inboard direction of the vehicle width.

[0016] Further, the front end of the outer guide portion is provided with a guide space allowing the guide block to be biased to the inboard and rear side of the vehicle body during the opening operation, and the tail end of the outer guide portion is provided with a release space for allowing the guide block to tilt and disengage from the surface of the inner guide portion in the outboard direction of the vehicle width.

[0017] Further, the driving arm is connected with a driving unit, the driving unit comprises a driving seat arranged on the rear end of the opening of the vehicle body, a motor and at least one transmission member arranged on the driving seat, and the driving arm is arranged to rotate on the driving seat and engage with the transmission member.

[0018] Further, the driving arm is externally provided with a protective shell, when the door is fully closed, the driving arm extends into the inboard space of the vehicle from the inboard direction of the vehicle width, and extends from the rear side of the opening of the vehicle body to the position close to the centroid of the door, and the driving arm extends between the door and the vehicle body in the opening trajectory of the door.

[0019] A vehicle side swing door and its opening method, applied to the vehicle side swing door described above, comprising the following steps:

[0020] S1, electrically actuating or manually starting the rear door;

[0021] S2, rear door unfolding operation preparation: the driving arm is driven to rotate and drive the door to prepare to swing to the rear side, the rear closing end of the door tilts to the outboard side of the vehicle width, the guide block on the front closing end of the door tilts inboard in the guide seat, the driven arm is constrained to slide in the lifting section, the swing-out of the front closing end of the door in the outboard direction of the vehicle width is suppressed, the guide block is in an inclined and unobstructed posture in the guide seat, and the front edge of the rear door is inclined in the inboard direction of the vehicle width compared with the rear edge of the front door, the rear door is prepared to swing to the rear side and unfold in an inclined posture;

[0022] S3, the rear door unfolds to the maximum distance: the driving arm continues to operate and drives the door to unfold to the rear side of the vehicle body, the front closing end of the door and the guide block are separated from the rear end of the front door and the guide seat in an inclined posture, and the guide shaft enters the U-shaped section under the assistance of the telescopic rod, at this time the adjusting arm rotates and is limited to be flush with the driven arm, then the guide shaft rotates to the valley bottom position close to the vehicle body, the driving arm is perpendicular to the vehicle body, and the rear door is kept in a posture parallel to the vehicle body;

[0023] S4, the rear door is unfolded and the body opening is released: the driving rocker continues to act and drags the rear door to move to the rear side of the body opening in a parallel posture, the guide shaft is guided to run to the end of the U-shaped section away from the body and away from the door side rotating end of the adjusting arm, and the driven rocker moves to the rear side of the body side rotating end of the driving rocker, at this time, the rear door approaches to the rear side of the body to release the body opening.

[0024] Compared with the prior art, the present application has the following advantages and beneficial effects:

[0025] In the present application, by arranging the track guiding assembly between the body and the driven rocker and the opening and closing guiding assembly between the body and the closing end of the door, in the closed position, the opening and closing guiding assembly can effectively constrain the relative position between the door and the body, thereby reliably supporting the door and limiting the displacement of the door in the vehicle width direction, thereby reducing the shaking and shaking and the noise generated during driving, and due to the constraint of the inner guiding part and the outer guiding part on the guiding block, in the case that the side of the vehicle is subjected to impact load, the door can also be maintained in the closed position, thereby improving the safety;

[0026] In the opening process, the track guiding assembly limits the track of the driven rocker, and the distance between the door side end of the driven rocker and the door changes following the rotation of the driving rocker, so that the door remains in a state of lifting the rear end from the front closing end of the body during the opening operation, and the opening and closing guiding assembly can adapt to the track of the door driven by the rocker assembly, thereby ensuring that the door can be opened and closed without interference, and after the door completes the opening preparation operation, the front closing end of the door can be unfolded under the further guiding and dragging action of the track guiding assembly, that is, the front closing end of the door gradually approaches the rear closing end of the door in the vehicle width direction, so that the door is unfolded relative to the body opening until completely unfolded, improving the opening efficiency of the door. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a schematic view of the body and the door of the present application;

[0028] Figure 2 is a structural schematic view of the rear door of the present application in a fully closed state;

[0029] Figure 3 is a structural schematic view of the rear door of the present application when preparing to open;

[0030] Figure 4 is a structural schematic view of the door of the present application;

[0031] Figure 5 is a structural schematic view of the driven rocker and the track seat of the present application;

[0032] Figure 6 Structure diagram of the driven swing arm and trajectory seat of the present application from another angle;

[0033] Figure 7 Sectional view diagram of the driven swing arm and trajectory seat of the present application;

[0034] Figure 8 Spatial arrangement diagram of the trajectory guide assembly, swing arm assembly of the present application;

[0035] Figure 9 Diagram of the swing arm assembly of the present application in the fully closed state of the rear door;

[0036] Figure 10 Diagram of the rear door of the present application in the maximum displacement state in the vehicle width direction;

[0037] Figure 11 Diagram of the rear door of the present application in the fully open state;

[0038] Figure 12 Trajectory diagram of the present application;

[0039] Figure 13 Sectional view diagram of the driven swing arm and trajectory seat of the present application;

[0040] Figure 14 Structure diagram of the guide seat on the vehicle body of the present application;

[0041] Figure 15 Structure diagram of the opening and closing guide assembly of the present application; Figure 14 Enlarged view of the middle B;

[0042] Figure 16 Structure diagram of the opening and closing guide assembly of the present application;

[0043] Figure 17 Sectional view diagram of the opening and closing guide assembly of the present application;

[0044] Figure 18 Structure diagram of the opening and closing guide assembly of the present application when preparing to open;

[0045] Figure 19 Structure diagram of the driven swing arm and trajectory seat of the present application after the preparation to open is completed;

[0046] Figure 20 Structure diagram of the opening and closing guide assembly of the present application after the preparation to open is completed;

[0047] In the figure:

[0048] 1, door; 1.1, front closing end of the door; 1.2, rear closing end of the door; 2, vehicle body; 2.1, opening of the vehicle body;

[0049] 3, rotating arm assembly; 3.1, driving rotating arm; 3.11, protective shell; 3.12, tooth part; 3.2, driven rotating arm; 3.21, guide shaft; 3.22, transmission arm;

[0050] 4, opening and closing guide assembly; 4.1, guide seat; 4.2, guide block; 4.21, guide matching surface; 4.22, guide convex part;

[0051] 4.3, outer guide part; 4.31, guide space; 4.32, release space; 4.33, first guide section; 4.34, second guide section; 4.35, guide joint part; 4.36, arc-shaped body; 4.37, first sheath;

[0052] 4.4, inner guide part; 4.41, base; 4.42, rotating shaft; 4.43, second sheath;

[0053] 4.5, arc-shaped surface; 4.6, base; 4.61, adjusting groove;

[0054] 5, track guide assembly;

[0055] 5.1, track seat; 5.11, limiting seat; 5.12, first limiting part; 5.13, second limiting part;

[0056] 5.2, lifting section; 5.21, sliding groove; 5.22, starting point; 5.23, transition point;

[0057] 5.3, U-shaped section;

[0058] 5.4, adjusting arm; 5.41, abutting part; 5.5, telescopic rod;

[0059] 6, driving unit; 6.1, driving seat; 6.2, motor; 6.3, transmission member; 6.4, adapter shaft; 6.5, speed reducer; 7, fixing seat; 7.1, groove; DETAILED DESCRIPTION

[0060] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0061] It should be understood that although the terms upper, middle, lower, top end, one end, etc. appear in the present text to describe various elements, these elements are not limited by these terms. These terms are only used to distinguish the elements from each other for the purpose of understanding, and are not used to define any direction or sequence limitation.

[0062] As Figures 1-20 shown, a vehicle side swing door, comprising a swing arm assembly 3 for driving a door 1 to perform opening and closing actions relative to a body opening 2.1, an opening and closing guide assembly 4 arranged on the closing end of the door 1 and the body 2, and a trajectory guide assembly 5 connected between the door 1 and the swing arm assembly 3, the opening and closing guide assembly 4 is arranged on the front closing end of the door 1, and the trajectory guide assembly 5 is arranged close to the front closing end of the door 1;

[0063] As Figure 4 and Figures 8 to 11 shown, the swing arm assembly 3 is arranged on one side of the interior panel of the door 1, the swing arm assembly 3 comprises a driving swing arm 3.1 and a driven swing arm 3.2, one end of the driving swing arm 3.1 is connected to a driving unit 6 and is rotatably arranged on the body 2, the other end of the driving swing arm 3.1 is rotatably connected to and actuates the door 1, the driving unit 6 is used to provide the driving torque of the driving swing arm 3.1 to drive the door 1 and the driven swing arm 3.2 to act;

[0064] One end of the driven swing arm 3.2 is rotatably arranged on the body 2, the door side end of the driven swing arm 3.2 is rotatably connected to the trajectory guide assembly 5, and the distance between the door side end of the driven swing arm 3.2 and the door 1 is adjustably rotatably connected, and the distance changes with the rotation of the driving swing arm 3.1 and through the trajectory guide assembly 5, and the trajectory guide assembly 5 is specifically arranged between the door side rotatable end of the driven swing arm 3.2 and the door 1;

[0065] Wherein, the trajectory guide assembly 5 exerts a restraining force on the front closing end 1.1 of the door to limit the trajectory of the door side rotatable end of the driven swing arm 3.2, thereby controlling the distance, while giving the driven swing arm 3.2 an auxiliary force to slide in the defined trajectory starting point, and maintaining the rear closing end 1.2 of the door to perform the opening action in preparation for opening in an outwardly inclined attitude in the vehicle width direction, or the closing action about to close, and in the above-mentioned opening action and closing action, the guide opening and closing assembly between the door 1 and the body 2 is ready to disengage from each other, and the front closing end 1.1 of the door is still close to the front side of the body opening 2.1;

[0066] As Figure 9 can be seen, the opening and closing guide assembly 4 is arranged between the front closing end of the door 1 and the body 2, which cooperates with each other in the fully closed state of the door 1 to limit the distance between the closing end of the door 1 and the closing end of the body 2, to ensure the stability of the door 1 in the closed state, and the other end of the door 1 is maintained by the driving unit 6.

[0067] When the door 1 swings, the opening and closing guide components 4 tilt to an unobstructed position in a coordinated manner during the opening action. They disengage as the active swing arm 3.1 continues to move. The opening and closing guide components 4 engage with each other in the closing trajectory and gradually come into contact with each other in the vehicle width and the closing direction of the body 2 as the door 1 continues to swing and close.

[0068] Therefore, when the opening action is completed, the front closing end 1.1 of the door tilts to the rear side of the vehicle body 2, thereby getting rid of the interference position with the end of the other door 1 and the obstruction of the opening and closing guide assembly 4. After that, the door 1 can open in a free posture. Of course, the trajectory guide assembly 5 is still constrained by the door-side rotating end of the driven swing arm 3.2 to prevent the front closing end 1.1 of the door from excessively swaying in the outer direction of the vehicle width.

[0069] (Active swing arm 3.1 and driven swing arm 3.2)

[0070] like Figures 9 to 11 As shown, the active swing arm 3.1 and the driven swing arm 3.2 are in a curved posture, specifically curved from the vehicle body 2 toward the door 1. When the door 1 is fully closed, the rotating connection ends of the active swing arm 3.1 and the driven swing arm 3.2 on the door 1 and the vehicle body 2 are offset back and forth with respect to the vehicle body 2. The door-side rotating ends of the driven swing arm 3.2 and the adjusting arm 5.4 are positioned closer to the front closing end 1.1 of the door than the door 1 rotating end of the active swing arm 3.1. Thus, the door-side rotating end of the driven swing arm 3.2 can cooperate with the trajectory guide component 5 on the front closing end 1.1 of the door to restrict the position and posture of the front closing end 1.1 of the door during the opening preparation and the action of the door 1 about to be fully closed. That is, to constrain the posture of the door 1 with its rear closing end extending outward in the vehicle width direction relative to the front closing end.

[0071] As an example, the door-side rotating end of the active swing arm 3.1 is located behind the door-side rotating end of the driven swing arm 3.2, the body 2 rotating end of the driven swing arm 3.2 is located behind the door-side rotating end of the active swing arm 3.1, and the body 2 rotating end of the active swing arm 3.1 is located behind the body 2 rotating end of the driven swing arm 3.2.

[0072] With the door 1 fully open, the door 1 approaches the rear of the body opening 2.1 in a posture approximately parallel to the body 2, and the swing arm assembly 3 rotates to the rear side of the body opening 2.1. At this time, the door-side rotating end of the driven swing arm 3.2 moves to the rear side of its body 2 rotating end, and the door-side rotating end of the active swing arm 3.1 moves to the rear side of its body 2 rotating end and is located at the rear side of the body opening 2. The door-side rotating end of the driven swing arm 3.2 is close to the body 2 rotating end of the active swing arm 3.1, preferably close to or located at the rear side of the body opening 2.1, so as to release the body opening 2.1 and facilitate the entry and exit of passengers.

[0073] The maximum outward state of the door 1 is also included in the opening trajectory of the door 1, at which time the active rotating arm 3.1 and the driven rotating arm 3.2 tend to be perpendicular to the vehicle body 2. In the fully closed state of the door 1, the active rotating arm 3.1 and the driven rotating arm 3.2 are folded together between the vehicle body opening 2.1 and the door 1, and are in a substantially parallel state.

[0074] It can be understood that the parallel state of the door 1 and the vehicle body 2 refers to a substantially parallel state, which aims to reduce the occupied space of the door 1 outside the vehicle body 2 to avoid interference with the outside world.

[0075] Therefore, the quadrilateral linkage structure formed by the rotating arm assembly 3 described above is used to open and close the door 1.

[0076] Specifically, the door side rotating end of the active rotating arm 3.1 is arranged at the armrest position of the door 1 and close to the center of the door 1, and the vehicle body 2 end of the active rotating arm 3.1 is arranged above the rear wheel hub of the vehicle body 2 and below the C pillar of the vehicle body 2.

[0077] The door side end of the driven rotating arm 3.2 is arranged at the lower part of the door 1, and the vehicle body 2 rotating end of the driven rotating arm 3.2 is arranged at the stop of the C pillar of the vehicle body 2, or between the wheel hub and the door sill of the vehicle body 2.

[0078] Referring to Figure 10 and Figure 11 Specifically, the active rotating arm 3.1 is externally provided with a protective shell 3.11, which is preferably fixed to the outer side of the active rotating arm 3.1. In the fully closed state of the door 1, the active rotating arm 3.1 extends inward from the door 1 into the interior space, at which time the protective shell 3.11 can perform the function of an interior armrest. In addition, the protective shell 3.11 and the active rotating arm 3.1 extend from the rear side stop of the vehicle body opening 2.1 to a position close to the center of mass of the door 1, and the active rotating arm 3.1 extends between the door 1 and the vehicle body 2 in the opening trajectory of the door 1, at which time the active rotating arm 3.1 and the protective shell 3.11 can serve as an armrest for passengers to enter and exit the vehicle cabin.

[0079] (Opening and closing guide assembly 4)

[0080] Further referring to Figure 4 and Figures 14 to 18As shown, specifically, the opening and closing guide assembly 4 includes a guide block 4.2 disposed on the front closing end 1.1 of the door and a guide seat 4.1 disposed on the front closing end of the vehicle body 2. The guide seat 4.1 has an outer guide portion 4.3 and an inner guide portion 4.4 spaced apart in the front-rear direction of the vehicle body 2. A guide channel is defined between the outer guide portion 4.3 and the inner guide portion 4.4. The outer guide portion 4.3 constrains the guide block 4.2 in the outward direction of the vehicle width, and the inner guide portion 4.4 is supported on the guide block 4.2 in the inward direction of the vehicle width. In the fully closed state, the guide block 4.2 is inserted into the guide channel and is abutted against the inner side of the outer guide portion 4.3 and the outer side of the inner guide portion 4.4.

[0081] Among them, the front closing end of the vehicle body 2 refers to the part on the vehicle body that is closed with the front closing end of the door 1.1.

[0082] Specifically, during the opening and closing of the car door 1, the guide block 4.2 is constrained within the guide channel defined by the inner guide portion 4.4 and the outer guide portion 4.3.

[0083] As a further embodiment of the external guide portion 4.3 and the internal guide portion 4.4, the external guide portion 4.3 and the internal guide portion 4.4 have opposing arcuate surfaces 4.5, and the arcuate surfaces 4.5 are spaced apart in the width direction of the vehicle body 2 so that the guide block 4.2 abuts against at least one arcuate surface 4.5 when the door 1 performs the opening and closing action.

[0084] Specifically, guide channels that fit the contour of guide block 4.2 are spaced between the arc-shaped surfaces 4.5, and the inner and outer surfaces of guide block 4.2 abut against the arc-shaped surfaces 4.5 when the door 1 is closed.

[0085] Specifically, the guide block 4.2 has a guide mating surface 4.21 on the inner and outer sides of the vehicle body 2. The guide mating surface 4.21 is connected to the end of the guide block 4.2 and forms a guide protrusion 4.22. In the fully closed state, the guide protrusion 4.22 abuts against the end of the arc surface 4.5 of the outer guide part 4.3, and the guide block 4.2 is restricted from moving outward in the vehicle width direction by the two arc surfaces 4.5. Thus, the vibration and noise generated by the door 1 during driving are effectively avoided, especially the stability of the fit between the front closing end 1.1 of the door and the vehicle body 2.

[0086] like Figure 18 As shown, in the opening action before opening, the guide mating surface 4.21 is used to mate with the arc-shaped surface 4.5 between the outer guide part 4.3 and the inner guide part 4.4 to play a certain guiding role, such as... Figure 20As shown, after the preparation for opening, the guide block 4.2 and the guide seat 4.1 reach the unobstructed posture in the rear sequence opening track of the door 1, at the same time, the front closing end 1.1 of the door reaches the unobstructed posture with the other door 1 or the body 2, so as to allow the front closing end of the door 1 to leave the body opening 2.1 without interference and further expand to the fully open state.

[0087] As shown, in the preparation for opening, the rear closing end 1.2 of the door expands to the outside of the door width under the actuation of the active rotating arm 3.1, while the front closing end 1.1 of the door is still deflected in the constraint of the track guide assembly 5, forming the posture of the door 1 being lifted, so as to unobstructedly separate from the body 2 and the front door 1, and in this process, the guide block 4.2 still needs to be constrained in the guide channel to ensure the posture of the front closing end 1.1 of the door being lifted. Figure 3 Specifically, the outer guide part 4.3 is arranged in an opening facing the guide block 4.2, and the inner guide part 4.4 is located in the opening direction of the outer guide block 4.2, the guide block 4.2 can enter and exit the guide channel through the opening, and the guide block 4.2 can be limited by the outer guide part 4.3 and the inner guide part 4.4 in the direction of the body 2 in the preparation for opening and closing, thereby improving the reliability of the opening and closing action of the door 1.

[0088] Specifically, the guide channel extends at least in the length direction of the body 2, and the guide channel is provided with an entrance section expanding in the door width direction at the opening allowing the guide block 4.2 to enter, through the setting of the entrance section, the guide block 4.2 is facilitated to enter or exit the guide seat 4.1 following the opening and closing action of the door 1, and the inner guide part 4.4 located at the rear side can still play a supporting role in the lifting process of the door 1.

[0089] As a further embodiment of the inner guide part 4.4, the inner guide part 4.4 is a circular arc convex part facing the inner side surface of the guide block 4.2, and is supported on the side of the guide block 4.2 close to the body 2 in the closed position of the door 1, so as to reduce the resistance of sliding friction while ensuring the supporting effect in the door width direction.

[0090] As preferred, the inner guide part 4.4 is positioned on the front closing end of the body 2 in a rotatable manner, so as to further reduce the resistance between the guide block 4.2 and the inner guide part 4.4.

[0091] As shown, in the preparation for opening, the rear closing end 1.2 of the door expands to the outside of the door width under the actuation of the active rotating arm 3.1, while the front closing end 1.1 of the door is still deflected in the constraint of the track guide assembly 5, forming the posture of the door 1 being lifted, so as to unobstructedly separate from the body 2 and the front door 1, and in this process, the guide block 4.2 still needs to be constrained in the guide channel to ensure the posture of the front closing end 1.1 of the door being lifted.

[0092] Figure 16 and Figure 17 ​As shown, as a further embodiment of the external guide portion 4.3, the external guide portion 4.3 includes a first guide segment 4.33 and a second guide segment 4.34 arranged sequentially in the opening direction of the door 1. The first guide segment 4.33 has an extension from the closed end of the vehicle body 2 toward the outer side of the vehicle width, and an extension in the rear direction of the vehicle body 2, thereby forming a semi-open closure to provide a limit for the door 1 and the guide block 4.2 in the forward direction of the vehicle body 2. At the same time, the limit for the door 1 and the guide block 4.2 in the outer direction of the vehicle width is ensured by the extension of the first guide segment 4.33, so that the first guide segment 4.33 receives and fits the end of the guide block 4.2.

[0093] Furthermore, the second guide section 4.34 extends further outward from the end of the first guide section 4.33 to form an entrance section together with the inner guide section 4.4 connected to the front closed end of the body 2, so as to facilitate the disengagement and entry of the guide block 4.2.

[0094] Furthermore, the end of the first guide segment 4.33 is provided with a guide joint portion 4.35, which is located between the first guide segment 4.33 and the second guide segment 4.34 and forms a protruding part in the guide channel. Thus, in the initial stage when the door 1 is about to open, the guide joint portion 4.35 can further constrain the guide block 4.2 and prevent the guide block 4.2 from excessive movement.

[0095] In other embodiments, to further optimize the opening and closing guide component 4, from Figure 17 As can be seen, one or more of the guide block 4.2, outer guide portion 4.3 and inner guide portion 4.4 have a sleeve on their outer surface. The sleeve is preferably made of a wear-resistant and shock-absorbing material, thereby further reducing the contact noise when the door 1 is about to open and close. At the same time, it effectively increases the service life of the guide block 4.2 and guide seat 4.1.

[0096] In addition, the sleeve design helps to increase the smoothness of the opening and closing guide component 4 when relative sliding occurs, and reduces the generation of abnormal noise.

[0097] As one arrangement of the guide seat 4.1, the guide assembly also includes a base 4.6. The closed end of the vehicle body 2 is provided with an installation position corresponding to the base 4.6. The outer guide part 4.3 and / or the inner guide part 4.4 are disposed on the base 4.6. The base 4.6 is disposed on the closed end of the vehicle body 2 and is adjustable in the front and rear direction of the door 1.

[0098] As an example, from Figure 16 As can be seen, the base 4.6 is provided with an adjustment groove 4.61 along the front and rear direction of the vehicle body 2. By adjusting the position of the base 4.6, the relative position of the guide seat 4.1 and the guide block 4.2 can be achieved.

[0099] Further, adjustment grooves 4.61 can also be provided on the inner guide part 4.4 and the outer guide part 4.3, so as to further adjust the relative positions of the inner guide part 4.4 and the outer guide part 4.3, and adjust the relative positions of the guide seat 4.1 and the guide block 4.2 according to different assembly conditions.

[0100] As an example of the inner guide part 4.4, the inner guide part 4.4 comprises a base 4.41, and a rotating shaft 4.42 rotatably arranged on the base 4.41. In the action of preparing to open and about to close the door 1, the rotating shaft 4.42 rotates with the touch of the guide block 4.2.

[0101] The rotating shaft 4.42 is externally provided with a second sheath 4.43.

[0102] Specifically, the guide block 4.2 comprises an arc-shaped body 4.36, and a first sheath 4.37 arranged on the arc-shaped body 4.36. The arc-shaped body 4.36 is provided with a plurality of holes with respect to the extension direction thereof, which is beneficial to reduce abnormal sound.

[0103] Preferably, the arc-shaped body 4.36 is a metal material with certain strength, so as to ensure the structural reliability of the guide block 4.2. The first sheath 4.37 is preferably arranged on the arc-shaped body 4.36 in a plastic-wrapped form.

[0104] Further referring to Figure 12 In the present embodiment, in order to adapt to the following lifting action of the front closing end 1.1 of the door, the front end of the outer guide part 4.3 is provided with a guide space 4.31 allowing the guide block 4.2 to be biased to the rear side of the vehicle body 2 during the opening action. The tail end of the outer guide part 4.3 is provided with a release space 4.32 for the guide block 4.2 to tilt and disengage from the surface of the inner guide part 4.4 to the vehicle width direction. At this time, the outer side guide matching surface 4.21 of the guide block 4.2 can slide and guide on the first guide section 4.33. At the same time, the guide block 4.2 slides and guides with the inner guide part 4.4 along with the movement of the vehicle body 2 of the door 1 to the rear side, until the guide matching surface 4.21 of the guide block 4.2 is away from the arc-shaped surface 4.5 in the guide channel, so as to reach the unobstructed posture. Thus, through the yawing action of the door 1 in the action of preparing to open, the guide block 4.2 rotates in the guide seat 4.1, and the guide block 4.2 is given the condition of unobstructed posture through the guide space 4.31 and the release space 4.32. The constraint trajectory of the track guide assembly 5 to the driven rotating arm 3.2 is arc-shaped, so as to optimize the complete disengagement action of the guide block 4.2 in the guide channel on the basis of the arc-shaped guide block 4.2.

[0105] As preferred, the number of the opening and closing guide assemblies 4 is two, and the two opening and closing guide assemblies 4 are arranged on the upper and lower sides of the closing end of the door 1 and the vehicle body 2 respectively, so as to further enhance the stability and retention of the door 1.

[0106] (The trajectory guide assembly 5)

[0107] As shown in Figures 4 to 11 , and Figure 19 , specifically, the trajectory guide assembly 5 comprises a trajectory seat 5.1 fixed on the front side of the door 1, an adjusting arm 5.4 rotatably arranged between the trajectory seat 5.1 and the door side end of the driven rotating arm 3.2, and a telescopic rod 5.5 rotatably connected between the driven rotating arm 3.2 and the rear side of the door 1, wherein the trajectory seat 5.1 is arranged on the inner side of the door 1 and protrudes towards the inner side of the vehicle body 2, and the telescopic rod 5.5 is arranged to provide an opening force in the linear direction of itself during the opening of the door 1, i.e. the telescopic rod 5.5 has a tendency to extend, and the auxiliary force of the telescopic rod 5.5 is conducive to switching the door 1 from the opening action to the unfolded state and the smoothness of the opening trajectory in the unfolded state, so that the telescopic rod 5.5 can provide a buffering force during the closing of the door 1 to avoid the inertial collision of the door 1 when closing.

[0108] As a further embodiment of the telescopic rod 5.5, the telescopic rod 5.5 is arranged at the same height as the driven rotating arm 3.2, and the rotating connection position of the telescopic rod 5.5 and the driven rotating arm 3.2 is located on the side of the driven rotating arm 3.2 facing the door 1.

[0109] Specifically, the telescopic rod 5.5 exerts a smooth linear force during opening, and as an option, the telescopic rod 5.5 can be a gas spring or an electrically powered support rod.

[0110] In other embodiments, in order to constrain the rotation of the telescopic rod 5.5, a fixed seat 7 is further arranged on the door 1, the fixed seat 7 is arranged between the driven rotating arm 3.2 and the driving rotating arm 3.1, and the telescopic rod 5.5 passes through the fixed seat 7, the fixed seat 7 is provided with a channel 7.1 for the relative sliding of the telescopic rod 5.5 with the opening and closing of the door 1, and the channel 7.1 is arranged along the vehicle width direction, so as to limit the telescopic rod 5.5 from moving vertically through the channel 7.1, and at the same time, ensure that the telescopic rod 5.5 rotates within a predetermined unfolding area, so as to avoid excessive rotation of the telescopic rod 5.5 in an emergency.

[0111] As a further embodiment of the driven swing arm 3.2, the driven swing arm 3.2 has a guide shaft 3.21 constrained to slide within a track seat 5.1, the track seat 5.1 forms a cavity in the up-down direction of the door 1, the driven swing arm 3.2 has a transmission arm 3.22 extending from the vehicle body 2, the transmission arm 3.22 is placed within the track seat 5.1, and the guide shaft 3.21 is arranged on the transmission arm 3.22 and is in sliding connection with the track seat 5.1 in the up-down direction of the door 1.

[0112] The rotating end of the telescopic rod 5.5, the guide shaft 3.21, and the rotating connection end of the adjusting arm 5.4 are sequentially arranged towards the end of the transmission arm 3.22, and the rotating end of the telescopic rod 5.5 is arranged outside the track seat 5.1.

[0113] As a further embodiment of the track seat 5.1, the track seat 5.1 is provided with a lifting section 5.2 corresponding to the preparation of the opening operation and the preparation of the closing operation, and a U-shaped section 5.3 corresponding to the opening of the door 1 from the preparation of the opening to the full opening and from the full opening to the closing, the lifting section 5.2 and the U-shaped section 5.3 are both arranged in an arc shape, and the U-shaped section 5.3 has a tendency to bend towards the inner side of the vehicle width, and the lifting section 5.2 extends along the end of the U-shaped section 5.3 on the outer side of the vehicle width.

[0114] The above-mentioned guide shaft 3.21 constitutes the door side rotating end of the driven swing arm 3.2, the connecting position of the adjusting arm 5.4 on the track seat 5.1 serves as the door side rotating end of the adjusting arm 5.4, and the distance between the door side rotating end of the adjusting arm 5.4 and the guide shaft 3.21 is adjusted by the sliding of the guide shaft 3.21 within the track seat 5.1.

[0115] The guide direction of the lifting section 5.2 matches the guide channel, and in the opening operation of the door 1, the relative position of the driven swing arm 3.2 and the adjusting arm 5.4 within the track seat 5.1 moves from Figure 9 to Figure 19 The driven swing arm 3.2 rotates under the traction of the door 1 and the telescopic rod 5.5, and actuates the rotation of the adjusting arm 5.4, the door side rotating end of the adjusting arm 5.4 is at least close to the guide shaft 3.21 from the opening operation, so that the distance between the guide shaft 3.21 and the door side rotating end of the adjusting arm 5.4 is reduced, and the telescopic rod 5.5 applies a force to actuate the rotation of the driven swing arm 3.2 and the adjusting arm 5.4, at this time, the distance between the door side rotating end of the adjusting arm 5.4 and the vehicle body 2 rotating end of the driven swing arm 3.2 is reduced, and the front closing end 1.1 of the door 1 is delayed to unfold the rear closing end 1.2 of the door under the guidance of the lifting section 5.2, so that the front closing end of the door 1 moves in an inclined posture to avoid the interference of the vehicle body 2 and the other side door 1, at the same time, the guide block 4.2 is performing the action of disengaging from the guide seat 4.1, from Figure 18 to Figure 20the door 1 is driven to rotate continuously by the driven rotating arm, and the adjusting arm 5.4 rotates to the limit position of the track seat 5.1, at which time the guide block 4.2 is separated from the guide seat 4.1, and the front closing end of the door 1 is driven to rotate and to be extended in the arc-shaped track to the position close to the rear closing end 1.2 of the door 1, at which time the guide shaft 3.21 slides in the U-shaped section 5.3, and the distance between the guide shaft 3.21 and the door-side rotating end of the adjusting arm 5.4 is gradually lengthened. Figure 10 、 Figures 11 to 12 The arc-shaped track of the door 1 is extended in the vehicle width direction to the position close to the rear closing end 1.2 of the door 1, at which time the guide shaft 3.21 slides in the U-shaped section 5.3, and the distance between the guide shaft 3.21 and the door-side rotating end of the adjusting arm 5.4 is gradually lengthened.

[0116] As shown in Figure 19 , the lifting section 5.2 has an arc-shaped sliding channel 5.21, and an arc-shaped starting point 5.22 and a transition point 5.23 connected to the two ends of the sliding channel 5.21, wherein the starting point 5.22 is away from the U-shaped section, the transition point 5.23 is connected to the U-shaped section 5.3, the centers of the starting point 5.22, the sliding channel 5.21 and the transition point 5.23 are staggered in the vehicle width direction, and the door-side rotating end of the adjusting arm 5.4 on the track seat 5.1 is located on the vehicle width outside of the transition point 5.23, and is adjacent to the U-shaped section and the transition point 5.23.

[0117] As an example, the center of the starting point 5.22 is located on the outside of the track slot in the vehicle width direction, the center of the sliding channel 5.21 is located on the inside of the track slot in the vehicle width direction, and the center of the transition point 5.23 is located on the outside of the track slot in the vehicle width direction.

[0118] The starting point 5.22 has a blocking effect on the closing position of the guide shaft 3.21, which is beneficial to improve the stability of the door 1 in the closing position and reduce the shaking; the transition point 5.23 is beneficial to guide the front closing end of the door 1 to the position capable of being quickly extended while connecting the lifting section 5.2 and the U-shaped section 5.3.

[0119] It is worth mentioning that in the opening track, the telescopic rod 5.5 provides auxiliary force for the guide shaft 3.21 to switch from the lifting section 5.2 to the U-shaped section 5.3, which is more smooth.

[0120] As shown in Figure 7 , specifically, the track seat 5.1 is further provided with a limiting seat 5.11, and the adjusting arm 5.4 is provided with an abutting portion 5.41, which is rotated by the traction of the telescopic rod 5.5 when the front closing end of the door 1 is ready to leave the vehicle body 2, and is abutted to the limiting seat 5.11 after being separated from the door 1 to keep the door 1 open in the extended posture;

[0121] And the abutment part 5.41 rotates under the traction of the telescopic rod 5.5 when preparing to engage the front closing end of the vehicle door 1 to the vehicle body 2, and moves away from the limiting seat 5.11 when the front closing end is about to engage the vehicle door 1, so as to release the vehicle door 1, and the vehicle door 1 forces the front closing end to tilt towards the vehicle door 1 side under the constraint of the telescopic rod 5.5.

[0122] The limiting seat 5.11 includes a first limiting part 5.12 extending in the vehicle width direction and a second limiting part 5.13 extending in the vehicle length direction, and the abutment part 5.41 is stopped by the first limiting part 5.12 and the second limiting part 5.13 in the unfolding action after the opening preparation is completed, which is beneficial to limit the offset amount of the guide shaft 3.21 in the track groove.

[0123] (Drive unit 6)

[0124] As shown in Figure 4 and Figure 13 Specifically, the drive unit 6 is connected to the driving arm 3.1, and the drive unit 6 includes a drive seat 6.1 arranged at the rear end of the vehicle body opening 2.1, a motor 6.2 and at least one transmission member 6.3 arranged on the drive seat 6.1, and the driving arm 3.1 is rotatably arranged on the drive seat 6.1 and engaged with the transmission member 6.3.

[0125] Specifically, the drive seat 6.1 is provided with a vertical adapter shaft 6.4, the driving arm 3.1 is connected with the adapter shaft 6.4, and the driving shaft is provided with a tooth part 3.12 for engaging with the transmission member 6.3, wherein a speed reducer 6.5 is arranged between the motor 6.2 and the tooth part 3.12, and a plurality of transmission members 6.3 are arranged in the speed reducer 6.5 and connected with the tooth part 3.12 and the motor 6.2 in transmission.

[0126] As an example, the output end of the motor 6.2 is connected with a worm gear assembly, the bottom of the worm gear is connected with a speed reducer, and the end of the speed reducer is provided with a gear which is engaged with the tooth part 3.12 on the driving arm 3.1.

[0127] In this embodiment, the drive unit 6 is arranged on the vehicle body 2 corresponding to the rear side of the vehicle body opening 2.1, so as to increase the effective design space of the vehicle door 1, and avoid that the drive unit 6 occupies too much space on the vehicle door 1, which causes other functional modules on the vehicle door 1 cannot be assembled.

[0128] A vehicle swing door and an opening method thereof are provided, which are applied to the vehicle swing door and include the following steps:

[0129] S1, electrically actuating or manually starting the vehicle rear door;

[0130] S2, the rear door 1 unfolding action preparation: the active rotary arm 3.1 is driven to rotate and drive the door 1 to prepare to swing to the rear side, the rear door closing end 1.2 tilts to the outside of the vehicle width, and the guide block 4.2 on the front door closing end 1.1 tilts inwardly in the guide seat 4.1, and the driven rotary arm 3.2 is constrained to slide in the raised section 5.2, and the unfolding amount of the front door closing end 1.1 in the vehicle width direction is inhibited, the guide block 4.2 is ready to be separated from the guide seat 4.1 in the inclined barrier-free posture, and the front edge of the rear door 1 is inclined to the rear edge of the front door 1 in the vehicle width direction, and the rear door 1 is ready to swing to the rear side and unfold in an inclined posture.

[0131] S3, the rear door 1 unfolds to the maximum distance: the active rotary arm 3.1 continues to act and drags the door 1 to unfold to the rear side of the vehicle body 2, the front door closing end 1.1 and the guide block 4.2 are separated from the rear end of the front door 1 and the guide seat 4.1 in an inclined posture, and the guide shaft 3.21 enters the U-shaped section 5.3 under the assistance of the telescopic rod 5.5, at this time the adjusting arm 5.4 rotates and is limited to be flush with the driven rotary arm 3.2, and then the guide shaft 3.21 rotates to the bottom of the U-shaped section 5.3 close to the vehicle body 2, the active rotary arm 3.1 is perpendicular to the vehicle body 2, and the rear door 1 is kept in a posture parallel to the vehicle body 2.

[0132] S4, the rear door 1 unfolds and releases the vehicle body opening 2.1: the active rotary arm 3.1 continues to act and drags the rear door 1 to keep moving to the rear side of the vehicle body opening 2.1 in a posture parallel to the vehicle body 2, and the guide shaft 3.21 is guided to travel to the end of the U-shaped section 5.3 away from the vehicle body 2, and away from the door side rotating end of the adjusting arm 5.4, and the driven rotary arm 3.2 moves to the rear side of the vehicle body 2 side rotating end with the door side rotating end of the active rotary arm 3.1, at this time the rear door 1 approaches to the rear side of the vehicle body 2 to release the vehicle body opening 2.1.

[0133] In step S2, the distance between the guide shaft 3.21 and the door side rotating end of the adjusting arm 5.4 gradually decreases.

[0134] In steps S3 to S4, the distance between the guide shaft 3.21 and the door side rotating end of the adjusting arm 5.4 gradually increases.

[0135] Wherein, the closing track of the rear door 1 is opposite to the opening track, especially, the guide block and the guide seat are engaged with each other in the closing action track, thereby limiting the movement of the door in the vehicle width direction, and gradually abutting each other in the vehicle width and the closing direction of the vehicle body 2 with the swing action of the door 1 continues to close, thereby keeping the door in a stable closed state.

[0136] The embodiments are only used to explain the present application, and are not used to limit the present application, and any modification without creative contribution made by the person skilled in the art according to the embodiments after reading the specification is protected by the patent law as long as it is within the scope of the claims of the present application.

Claims

1. A swing door of a vehicle, characterized in that: it comprises a swing arm assembly (3) for driving the door (1) to perform opening and closing actions relative to the opening (2.1) of the vehicle body (2), an opening and closing guide assembly (4) arranged on the closed end of the door (1) and the vehicle body (2), and a track guide assembly (5) connected between the door (1) and the swing arm assembly (3); the swing arm assembly (3) comprises a driving swing arm (3.1) and a driven swing arm (3.2), one end of the driving swing arm (3.1) is connected to a driving unit (6) and is rotatably arranged on the vehicle body (2), the other end of the driving swing arm (3.1) is rotatably connected to and actuates the door (1), one end of the driven swing arm (3.2) is rotatably arranged on the vehicle body (2), the door side end of the driven swing arm (3.2) is rotatably connected to the track guide assembly (5), and the distance between the door side end of the driven swing arm (3.2) and the door (1) is adjustably arranged and changes with the rotation of the driving swing arm (3.1); the track guide assembly (5) applies a constraint force to the front closed end (1.1) of the door and keeps the rear closed end (1.2) of the door in a state of outward tilting in the vehicle width direction to perform the opening action in preparation for opening or the closing action in preparation for closing; the opening and closing guide assembly (4) tilts to an unobstructed state in cooperation with the swing of the door (1) during the opening action, and is separated from each other with the continuous action of the driving swing arm (3.1), the opening and closing guide assembly (4) is engaged with each other and gradually abuts against each other in the vehicle width direction and the closing direction of the vehicle body (2) with the swing of the door (1) during the closing action; the track guide assembly (5) comprises a track seat (5.1) fixed on the front side of the door (1), an adjusting arm (5.4) rotatably arranged on the door side end of the driven swing arm (3.2), and a telescopic rod (5.5) connected between the driven swing arm (3.2) and the rear side of the door (1), the driven swing arm (3.2) has a guide shaft (3.21) constrained to slide in the track seat (5.1), the door side rotating end of the adjusting arm (5.4) is rotatably arranged on the track seat (5.1), the door side rotating end of the adjusting arm (5.4) is at least close to the guide shaft (3.21) from the opening action, and the telescopic rod (5.5) applies an acting force to actuate the rotation of the adjusting arm (5.4) by the driven swing arm (3.2); the track seat (5.1) is provided with a lifting section (5.2) corresponding to the opening action and the closing action, and a U-shaped section (5.3) corresponding to the door (1) from lifting to full opening and from full opening to closing, the lifting section (5.2) and the U-shaped section (5.3) are both arranged in an arc shape, and the U-shaped section (5.3) has a tendency to bend towards the inner side of the vehicle width, and the lifting section (5.2) extends outward along the end of the U-shaped section (5.3). ​ ​ ​ ​ ​ ​ 2. A vehicle side door as claimed in claim 1, characterised in that: The rotation connecting end of the active rotary arm (3.1) and the driven rotary arm (3.2) on the door (1) and the body (2) is arranged in front and back directions relative to the body (2), and the door side rotation end of the driven rotary arm (3.2) and the adjusting arm (5.4) is arranged closer to the front closing end (1.1) of the door than the door rotation end of the active rotary arm (3.1).

3. A vehicle side door as claimed in claim 1, characterized in that: The door (1) is arranged close to the rear of the body opening (2.1) in a parallel posture relative to the body (2) in a fully open state, and the rotary arm assembly (3) is rotated to the rear side of the body opening (2.1); the rotary arm assembly (3) is folded together in the fully closed state of the door (1) between the body opening (2.1) and the door (1).

4. A vehicle side door according to claim 1, wherein: The opening and closing guide assembly (4) comprises a guide block (4.2) arranged on the front closing end (1.1) of the door, and a guide seat (4.1) arranged on the front closing end of the body (2), the guide seat (4.1) has an outer guide part (4.3) and an inner guide part (4.4) arranged in the front and rear directions of the body (2), and the outer guide part (4.3) is arranged to constrain the guide block (4.2) in the outer direction of the vehicle width, and the inner guide part (4.4) is arranged to support the guide block (4.2) in the inner direction of the vehicle width.

5. A vehicle side door as claimed in claim 4, characterised in that: The front end of the outer guide part (4.3) is provided with a guide space (4.31) allowing the guide block (4.2) to be biased to the rear side of the body (2) during the opening operation, and the tail end of the outer guide part (4.3) is provided with a release space (4.32) for the guide block (4.2) to tilt and separate from the surface of the inner guide part (4.4) in the outer direction of the vehicle width.

6. A vehicle side door according to claim 1, wherein: The active rotary arm (3.1) is connected with a driving unit (6), the driving unit (6) comprises a driving seat (6.1) arranged at the rear end of the body opening (2.1), a motor (6.2) and at least one transmission member (6.3) arranged on the driving seat (6.1), and the active rotary arm (3.1) is arranged to rotate on the driving seat (6.1) and engage with the transmission member (6.3).

7. A vehicle side door according to claim 1, wherein: The active rotary arm (3.1) is provided with a protective shell (3.11), the protective shell (3.11) is arranged to extend into the interior space of the vehicle from the vehicle width direction in the fully closed state of the door (1), and extend from the rear side of the body opening (2.1) to the position close to the center of mass of the door (1), and the active rotary arm (3.1) is arranged to extend between the door (1) and the body (2) in the opening trajectory of the door (1).

8. A method of opening a vehicle side door according to claim 4, characterized in that, The method comprises the following steps: S1, electrically actuating or manually opening the rear door of the vehicle; S2, the rear door (1) unfolding action preparation: the driving arm (3.1) is driven to rotate and drive the door (1) to prepare to swing to the rear side, the rear closing end (1.2) of the door tilts to the outside of the vehicle width, and the guide block (4.2) on the front closing end (1.1) of the door tilts inward in the guide seat (4.1), and the driven arm (3.2) is constrained in the lifting section (5.2) to slide, and the swing-out of the front closing end (1.1) of the door in the vehicle width direction is inhibited, the guide block (4.2) is in the inclined barrier-free posture in the guide seat (4.1), and the front edge of the rear door (1) is inclined to the rear edge of the front door (1) in the vehicle width direction, and the rear door (1) is prepared to swing to the rear side and unfold in an inclined posture; S3, the rear door (1) unfolds to the maximum distance: the driving arm (3.1) continues to act and drags the door (1) to unfold to the rear side of the vehicle body (2), the front closing end (1.1) of the door, the guide block (4.2) is separated from the rear end of the front door (1), the guide seat (4.1) in an inclined posture, and the guide shaft (3.21) enters the U-shaped section (5.3) under the assistance of the telescopic rod (5.5), at this time the adjusting arm (5.4) rotates and is limited to be flush with the driven arm (3.2), then the guide shaft (3.21) rotates to the valley bottom of the U-shaped section (5.3) close to the vehicle body (2), the driving arm (3.1) and the driven arm (3.2) are perpendicular to the vehicle body (2), and the rear door (1) is kept in a posture parallel to the vehicle body (2); S4, the rear door (1) unfolds and releases the vehicle body opening (2.1): the driving arm (3.1) continues to act and drags the rear door (1) to keep the posture parallel to the vehicle body (2) to move to the rear side of the vehicle body opening (2.1), and the guide shaft (3.21) is guided to travel to the end of the U-shaped section (5.3) away from the vehicle body (2), and away from the door side rotating end of the adjusting arm (5.4), and the driven arm (3.2) moves to the rear side of the vehicle body (2) side rotating end of the driving arm (3.1), at this time the rear door (1) approaches to the rear side of the vehicle body (2) to release the vehicle body opening (2.1).

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