Vehicle door device

Abstract

The door device for the vehicle comprises a linkage mechanism which is arranged between a vehicle body and a vehicle door and used for driving the vehicle door to be opened and closed, the linkage mechanism comprises a driving arm, a connecting assembly and a driving assembly, and the two ends of the driving arm are rotationally connected with the vehicle body and the vehicle door correspondingly and respectively. The connecting assembly is provided with a first rotating connecting point capable of rotating relative to a vehicle body and a second rotating connecting point capable of rotating relative to a vehicle door, the distance between the first rotating connecting point and the second rotating connecting point is variable and can be locked, and the driving assembly is in transmission connection with the driving arm and used for driving the driving arm to rotate to complete opening and closing actions of the vehicle door; when the connecting assembly is in a locked state, the vehicle body, the vehicle door and the linkage mechanism form a four-bar mechanism; according to the door device for the vehicle, the rear vehicle door can be opened independently, meanwhile, the structure is simple and reliable, and the manufacturing cost can be reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicle structure design, and in particular relates to a door device for a vehicle. Background Art

[0002] Four-link hinged doors can meet the needs of door opening in narrow spaces. Compared with traditional sliding doors, they have a simpler structure and relatively lower assembly precision requirements. However, in the existing four-link hinged door structure, due to its own structure, the front and rear doors can usually only be opened in a certain order, and the rear door cannot be opened alone. In the related art, a multi-link hinge device with more degrees of freedom is generally used to complete the variable trajectory opening of the door. Although the rear door can be opened alone, the overall door device structure is relatively complex, which increases the manufacturing cost; at the same time, the linkage mechanism with more degrees of freedom requires more limit structures to assist the door opening, which increases the failure rate and is not conducive to improving the stability of door opening.

[0003] Therefore, there is an urgent need to develop and design a new vehicle door device, which is required to be able to facilitate the independent opening of the rear door, and at the same time has a simple and reliable structure, which is conducive to reducing manufacturing costs. Utility Model Content

[0004] In view of this, an object of the present utility model is to provide a vehicle door device, which can facilitate the independent opening of the rear door and has a simple and reliable structure, thereby helping to reduce manufacturing costs.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a vehicle door device, including a linkage mechanism arranged between a vehicle body and a door for driving the door to open and close, the linkage mechanism including a driving arm, a connecting assembly and a driving assembly, the two ends of the driving arm are rotatably connected to the vehicle body and the door respectively, the connecting assembly has a first rotating connection point rotatable relative to the vehicle body and a second rotating connection point rotatable relative to the door, the distance between the first rotating connection point and the second rotating connection point is variable and can be locked, the driving assembly is transmission-connected to the driving arm for driving the driving arm to rotate to complete the opening and closing of the door; when the connecting assembly is in a locked state, the vehicle body, the door and the linkage mechanism form a four-bar linkage.

[0006] Furthermore, it also includes a strut mechanism, which is arranged between the vehicle door and the vehicle body in a manner that it can move synchronously with the opening and closing action of the vehicle door and is arranged away from the linkage mechanism.

[0007] Furthermore, the strut mechanism is arranged between the upper portion of the vehicle door and the top longitudinal beam of the vehicle body, and the linkage mechanism is arranged between the lower portion of the vehicle door and the door sill portion of the vehicle body.

[0008] Furthermore, the strut mechanism includes a rotating rod, a vehicle body connection block, and a door connection block. The door connection block is fixedly connected to the door, the vehicle body connection block is fixedly connected to the vehicle body, one end of the rotating rod is rotatably connected to the door connection block, and the other end of the rotating rod is rotatably and relatively slidably connected to the vehicle body connection block.

[0009] Furthermore, the connection assembly includes an electric strut. The two ends of the electric strut are respectively rotatably connected to the vehicle body and the door.

[0010] Furthermore, it further includes a guide wheel mechanism provided on the door and a guide rail mechanism provided on the vehicle body. The guide wheel mechanism has a guide wheel part, and the guide rail mechanism has a guiding part for guiding the guide wheel part to move along the set opening and closing path of the door near the fully closed position of the door.

[0011] Furthermore, the guide wheel mechanism includes a guide wheel bracket fixedly connected to the closed side end of the door based on the opening and closing movement of the door and a guide wheel rotatably connected to the guide wheel bracket; the guide rail mechanism includes a guide rail seat fixedly connected to the vehicle body, and a guide groove is provided on the guide rail seat and arranged along the length direction of the vehicle body and into which the guide wheel can move when the door is closed.

[0012] Furthermore, a guide wheel lateral limiting part for restricting the displacement of the guide wheel in the width direction of the vehicle body after it moves into the guide groove is provided on the guide groove.

[0013] Furthermore, the connection assembly includes a first connecting rod, a second connecting rod, and an angle lock. The first connecting rod and the second connecting rod are hinged. The other end of the first connecting rod is rotatably connected to the door, the other end of the second connecting rod is rotatably connected to the vehicle body, the angle lock has a telescopic part and is selectively fixedly installed on the first connecting rod or the second connecting rod, and a lock hole corresponding to the telescopic part of the angle lock is provided on the first connecting rod or the second connecting rod where the angle lock is not installed.

[0014] Furthermore, the connection assembly further includes an elastic member. The elastic member is arranged between the first connecting rod and the second connecting rod and makes the smaller included angle between the two have a shrinking tendency.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] The door device for vehicles provided by the present utility model can facilitate the separate opening of the rear door, and at the same time has a simple and reliable structure, which is beneficial to reducing the manufacturing cost. Specifically, since the distance between the first rotation connection point and the second rotation connection point of the connection component is variable and can be locked, the variable trajectory opening of the door can be realized. When the rear door adopts this door device for vehicles, interference and collision with the front door can be avoided. When the door is separated from the vehicle body, the connection component is locked, and a traditional four-bar hinge structure can be formed to ensure the stable opening of the door. This structure has small changes compared with the existing four-bar hinge structure, and is simple. It can be improved and designed based on the existing four-bar hinge vehicle models, which is beneficial to reducing the development and production cost.

[0017] Other advantages, objectives and features of the present utility model will be described to some extent in the subsequent specification, and to some extent, will be obvious to those skilled in the art based on the study of the following text, or can be taught from the practice of the present utility model. The objectives and other advantages of the present utility model can be realized and obtained through the following specification. Brief Description of the Drawings

[0018] Figure 1 Schematic diagram of the overall structure of the present utility model

[0019] Figure 2 Schematic diagram of the partial structure of the present utility model Figure 1

[0020] Figure 3 Schematic diagram of the partial structure of the present utility model Figure 2

[0021] Figure 4 Schematic diagram of the partial structure of the present utility model in the fully closed state of the door Figure 3

[0022] Figure 5 Schematic diagram of the two-dimensional simplified structure of the present utility model

[0023] Figure 6 Schematic diagram of the partial structure of the articulated joint of the first connecting rod and the second connecting rod

[0024] Reference numerals: 1 - vehicle body; 101 - top longitudinal beam; 102 - sill portion; 2 - door; 3 - linkage mechanism; 301 - driving arm; 302 - connecting assembly; 302a - electric strut; 302b - first connecting rod; 302b1 - lock hole; 302c - second connecting rod; 302d - elastic member; 302e - angle lock; 303 - driving assembly; 4 - strut mechanism; 401 - rotating rod; 402 - vehicle body connection block; 403 - door connection block; 5 - guide wheel mechanism; 5a - guide wheel portion; 501 - guide wheel bracket; 502 - guide wheel; 6 - guide rail mechanism; 6a - guiding portion; 601 - guide rail seat; 601a - guide groove; 601a1 - lateral limiting portion. Detailed implementation manners

[0025] The following uses specific specific examples to illustrate the implementation manners of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the drawings provided in the following embodiments are only used to illustrate the basic concept of the present invention. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0026] Please refer to Figures 1-6In the present embodiment, a vehicle door device is disclosed, including a linkage mechanism 3 arranged between a vehicle body 1 and a vehicle door 2 for driving the vehicle door 2 to open and close, the linkage mechanism including a driving arm 301, a connecting assembly 302 and a driving assembly 303, the two ends of the driving arm 301 are rotatably connected to the vehicle body 1 and the vehicle door 2 respectively, the connecting assembly 302 has a first rotating connection point rotatable relative to the vehicle body and a second rotating connection point rotatable relative to the vehicle door, the distance between the first rotating connection point and the second rotating connection point is variable and can be locked, the driving assembly 303 is transmission-connected to the driving arm 301 for driving the driving arm 301 to rotate to complete the opening and closing action of the vehicle door; when the connecting assembly 302 is in a locked state, the vehicle body 1, the vehicle door 2 and the linkage mechanism 3 form a four-bar linkage; here, the driving arm The two ends of 301 are generally connected to the vehicle body 1 and the door 2 for rotation through corresponding hinge shaft structures. When the connection component 302 is in a locked state, which means that the distance between the first rotation connection point and the second rotation connection point is locked and unchanged, the door 2 can form a four-bar linkage with the vehicle body 1 through the driving arm 301, the connection component 302; the structure of the driving component 303 is not limited here, and it can provide torque for the driving arm 301. Preferably, the driving component 303 here adopts a driving motor structure equipped with a reduction gear set. The driving component 303 can be installed and arranged with reference to the driving structure of the existing four-bar hinged door, which will not be repeated here; it should be noted that there are many structures that can realize the distance adjustment between the first rotation connection point and the second rotation connection point, such as electric struts, connecting rod mechanisms, etc., which are not limited here;

[0027] The vehicle door device in the above structure can facilitate the independent opening of the rear door, and at the same time, the structure is simple and reliable, which is conducive to reducing manufacturing costs. Specifically, since the distance between the first rotating connection point and the second rotating connection point of the connecting component 302 is variable and can be locked, the variable trajectory opening of the door can be achieved. For example, when the rear door adopts the vehicle door device, in the initial stage of the rotation process of the driving arm 301, that is, before the rear door is separated from the vehicle body 1, the distance between the first rotating connection point and the second rotating connection point is continuously shortened until the rear door is separated from the vehicle body 1, which can avoid interference and collision with the front door. When the door 2 is separated from the vehicle body 1, the connecting component is locked to form a traditional four-bar hinge structure, which ensures the stable opening of the door and prevents the door from shaking during the opening process. The door closing process is opposite to the opening process, which will not be repeated here. Compared with the existing four-bar hinge structure, this structure has little change and a simple structure. It can be improved and designed based on the existing four-bar hinge vehicle model, which is conducive to reducing development and manufacturing costs.

[0028] In this embodiment, a strut mechanism 4 is further included. The strut mechanism 4 is arranged between the vehicle door 2 and the vehicle body 1 in a manner that can move synchronously with the opening and closing actions of the vehicle door 2 and is arranged away from the linkage mechanism 3. It can be understood that since the vehicle door 2 has a variable trajectory during opening, that is, in the initial stage of opening the vehicle door, the distance between the first rotation connection point and the second rotation connection point of the connection assembly 302 needs to change. To adapt to the variable trajectory opening of the vehicle door, the strut mechanism 4 can adopt structures such as a telescopic rod mechanism or a connecting rod mechanism. The specific structure of the strut mechanism 4 is not limited here. By arranging the strut mechanism 4 and arranging it away from the linkage mechanism 3, while ensuring the above-mentioned opening and closing process of the vehicle door 2, it plays an auxiliary stabilizing role in the attitude of the entire vehicle door 2, improves the stability of the opening and closing process of the vehicle door, and is also beneficial to the lightweight design and compact layout of the linkage mechanism 3.

[0029] In this embodiment, the strut mechanism 4 is arranged between the upper part of the vehicle door 2 and the top longitudinal beam 101 of the vehicle body 1, and the linkage mechanism 3 is arranged between the lower part of the vehicle door 2 and the sill part 102 of the vehicle body 1. With this structure, the positions of the strut mechanism 4 and the linkage mechanism 3 are reasonably arranged, which is beneficial to the arrangement and installation of the vehicle door 2 on the vehicle body 1 and has a good effect on improving the stability of the vehicle door 2.

[0030] In this embodiment, the strut mechanism 4 includes a rotating rod 401, a vehicle body connection block 402, and a vehicle door connection block 403. The vehicle door connection block 403 is fixedly connected to the vehicle door 2, the vehicle body connection block 402 is fixedly connected to the vehicle body 1, one end of the rotating rod 401 is rotatably connected to the vehicle door connection block 403, and the other end of the rotating rod 401 is rotatably and relatively slidably connected to the vehicle body connection block 402. Specifically, here both the vehicle body connection block 402 and the vehicle door connection block 403 are U-shaped sheet metal parts. The rotating rod 401 is rotatably connected to the vehicle door connection block 403 through a rotating shaft. A waist-shaped hole is formed in the vehicle body connection block 402 along the width of the vehicle body, and the rotating rod 401 is slidably connected in the waist-shaped hole through a rotating shaft. This structural design has a simple installation structure, that is, a connecting rod structure is formed among the rotating rod 401, the vehicle body connection block 402, and the vehicle door connection block 403. By using the rotating rod 401 with a constant length, it can meet the variable trajectory movement requirements of the vehicle door movement and has a good effect on improving the opening stability of the vehicle door.

[0031] In this embodiment, the connecting component 302 includes an electric strut 302a. The two ends of the electric strut 302a are respectively rotatably connected to the vehicle body 1 and the vehicle door 2. Specifically, the two ends of the electric strut 302a can be rotatably connected through a shaft structure. It can be understood that the two ends of the electric strut 302a are respectively the first rotation connection point and the second rotation connection point. Here, the structure of the electric strut 302a is adopted, which is beneficial to actively drive to change the length of the electric strut 302a, that is, to change the distance between the first rotation connection point and the second rotation connection point, so as to meet the variable trajectory requirement at the initial stage of the vehicle door 2 opening, and thus realize the separate opening of the vehicle door. For example, when applied to the rear vehicle door, at the initial stage of the driving arm 301 rotating, the electric strut 302a actively shortens its own length, so that the rear vehicle door can be opened separately avoiding the front vehicle door. In this structural design, the structure of the electric strut 302a is adopted. The electric strut 302a is an existing mature product, which is beneficial to installation and reduces the requirement for installation accuracy. The electric strut 302a and the driving component 303 form a double-drive hinge structure, which ensures the stable characteristics even under pressure during the opening and closing process, and has a good effect on improving the stability of the vehicle door opening and closing.

[0032] In this embodiment, it further includes a guide wheel mechanism 5 provided on the vehicle door 2 and a guide rail mechanism 6 provided on the vehicle body 1. The guide wheel mechanism 5 has a guide wheel part 5a, and the guide rail mechanism 6 has a guiding part 6a for guiding the guide wheel part 5a to move along the set opening and closing path of the vehicle door 2 near the fully closed position of the vehicle door 2. Here, the structure of the guide wheel part 5a is not limited, and a rotatably connected guide wheel is preferably adopted. Here, the structure of the guiding part 6a is not limited, and a guide groove 601a structure is preferably adopted. By providing the cooperating guide wheel mechanism 5 and guide rail mechanism 6, it can provide a guiding function for the variable trajectory running path section after the vehicle door 2 contacts the vehicle body 1, which is beneficial to further improve the stability of the vehicle door 2 opening and closing process and prevent the vehicle door 2 from shaking during the opening and closing process.

[0033] In this embodiment, the guide wheel mechanism 5 includes a guide wheel bracket 501 fixedly connected to the closed side end of the vehicle door 2 based on the opening and closing movement of the vehicle door 2, and a guide wheel 502 rotatably connected to the guide wheel bracket 501. The guide rail mechanism 6 includes a guide rail seat 601 fixedly connected to the vehicle body 1. The guide rail seat 601 is provided with a guide groove 601a arranged along the length direction of the vehicle body 1 and into which the guide wheel 502 can move when the vehicle door 2 is closed. The guide wheel mechanism 5 and the guide rail mechanism 6 in this structural design have simple structures and reasonable installation positions. The guide groove 601a arranged along the length direction of the vehicle body 1 can enable the closed side end of the vehicle door 2 to make a horizontal straight line or approximate straight line movement during the opening and closing process when contacting the vehicle body, which is beneficial to realizing the avoidance problem with another vehicle door. Adopting the rotatably connected guide wheel 502 is beneficial to reducing friction and the risk of running jamming.

[0034] In this embodiment, a guide wheel lateral limiting portion 601a1 for restricting the displacement of the guide wheel 502 in the vehicle body width direction after it is moved into the guide groove 601a is provided on the guide groove 601a; specifically, the guide wheel lateral limiting portion 601a1 here is a limiting baffle integrally formed on the guide rail seat 601 corresponding to the outer part of the vehicle body in the lateral direction of the guide groove 601a. By designing the guide wheel lateral limiting portion 601a1, when the guide wheel mechanism is inserted into the guide rail mechanism in the closed state of the vehicle door 2, it can prevent the bottom of the vehicle door 2 from tilting up during a collision and assist in preventing the vehicle door 2 from deforming and intruding into the passenger compartment; moreover, in the closed state of the vehicle door 2, the vehicle door 2 can be prevented from being pushed open by an external thrust, which is beneficial to improving the reliability when the vehicle door 2 is closed.

[0035] In this embodiment, another structure of the connecting assembly 302 is: including a first connecting rod 302b, a second connecting rod 302c and an angle lock 302e. The first connecting rod 302b and the second connecting rod 302c are hinged. The other end of the first connecting rod 302b is rotatably connected to the vehicle door 2, and the other end of the second connecting rod 302c is rotatably connected to the vehicle body 1. The angle lock 302e has a telescopic portion and is selectively fixedly installed on the first connecting rod 302b or the second connecting rod 302c. A lock hole 302b1 corresponding to the telescopic portion of the angle lock 302e is provided on the first connecting rod 302b or the second connecting rod 302c where the angle lock 302e is not installed. It can be understood that the connection end of the first connecting rod 302b and the vehicle door 2 and the connection end of the second connecting rod 302c and the vehicle body 1 respectively correspond to the second rotation connection point and the first rotation connection point; specifically, the angle lock 302e preferably adopts an electric telescopic rod or an electric strut, etc., which is beneficial to realizing automatic control; in order to lock the included angle between the first connecting rod 302b and the second connecting rod 302c, the lock hole 302b1 can be a spline hole, a rectangular hole, etc. It can be understood that the telescopic portion of the angle lock 302e is adapted to the shape of the lock hole 302b1. In the connecting assembly 302 in this structural design, the distance between the first rotation connection point and the second rotation connection point can be adjusted by changing the included angle between the first connecting rod 302b and the second connecting rod 302c. With the arrangement of the guide wheel mechanism 5 and the guide rail mechanism 6, a passive adaptive adjustment of the distance between the first rotation connection point and the second rotation connection point can be realized, that is, the included angle between the first connecting rod 302b and the second connecting rod 302c can complete an adaptive angle change under the limitation of the guide wheel mechanism 5 and the guide rail mechanism 6, that is, without active control, which is beneficial to simplifying the control system; the setting of the angle lock 302e can lock the angle between the first connecting rod 302b and the second connecting rod 302c after the vehicle door 2 is separated from the vehicle body 1, so as to become a traditional four-bar hinge structure and ensure the running stability of the subsequent opening of the vehicle door;

[0036] The vehicle door adopting the connecting component 302 in the above structure can work as follows: In the initial stage of door opening, that is, before the guide wheel mechanism 5 disengages from the guide rail mechanism 6, the driving arm 301 rotates to drive the vehicle door 2 to swing. At this time, the angle lock 302e is in the unlocked state, that is, the included angle between the first link 302b and the second link 302c can adaptively change along with the movement track of the front end of the vehicle door (determined by the set track defined by the guide rail mechanism 6). In this way, the variable track opening of the vehicle door 2 is realized, avoiding interference with another vehicle door; When the guide wheel mechanism 5 just disengages from the guide rail mechanism 6, at this time, the telescopic end of the angle lock 302e can be actively controlled to extend to complete the locking of the included angle between the first link 302b and the second link 302c, and then the movement is the same as that of the traditional four-link hinge vehicle door in the subsequent stage to complete the opening of the vehicle door in the later stage; Similarly, when the vehicle door is closed, when the guide wheel mechanism 5 just enters the guide rail mechanism 6, the telescopic end of the angle lock 302e is actively controlled to retract to complete unlocking, and then the vehicle door can complete the final closing. The closing stage is the opposite process of the opening stage and will not be elaborated here.

[0037] In this embodiment, the connecting component 302 further includes an elastic member 302d. The elastic member 302d is arranged between the first link 302b and the second link 302c and makes the smaller included angle between the two have a tendency to decrease; Specifically, here the elastic member 302d preferably adopts a tension spring structure with simple installation. The two ends of the tension spring are fixedly connected to the first link 302b and the second link 302c respectively in a tensioned state; Of course, in other embodiments, the tension spring can also adopt a torsion spring structure, etc., as long as the included angle between the first link 302b and the second link 302c can have a tendency to decrease; In this structural design, the setting of the elastic member 302d limits the change trend of the included angle between the first link 302b and the second link 302c, improves the controllability of the angle change of the connecting component 302, is conducive to further enhancing the stability of the movement of the connecting component 302 during the opening and closing of the vehicle door. At the same time, in the initial stage of vehicle door opening, the pre-tension of the elastic member 302d helps to pull out the guide wheel mechanism 5, which is conducive to reducing the risk of vehicle door jamming.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A vehicle door device, characterized in that: The invention comprises a linkage mechanism (3) arranged between a vehicle body (1) and a vehicle door (2) for driving the vehicle door (2) to open and close, the linkage mechanism comprising a driving arm (301), a connecting assembly (302) and a driving assembly (303), the two ends of the driving arm (301) being rotatably connected to the vehicle body (1) and the vehicle door (2) respectively and correspondingly, the connecting assembly (302) having a first rotating connection point rotatable relative to the vehicle body and a second rotating connection point rotatable relative to the vehicle door, the distance between the first rotating connection point and the second rotating connection point being variable and lockable, the driving assembly (303) being transmission-connected to the driving arm (301) for driving the driving arm (301) to rotate to complete the opening and closing action of the vehicle door; when the connecting assembly (302) is in a locked state, the vehicle body (1), the vehicle door (2) and the linkage mechanism (3) form a four-bar linkage.

2. The vehicle door device according to claim 1, characterized in that: It also includes a support rod mechanism (4), which is arranged between the vehicle door (2) and the vehicle body (1) in a manner that it can move synchronously with the opening and closing action of the vehicle door (2) and is arranged away from the linkage mechanism (3).

3. The vehicle door device according to claim 2, characterized in that: The support rod mechanism (4) is arranged between the upper part of the vehicle door (2) and the top longitudinal beam (101) of the vehicle body (1), and the linkage mechanism (3) is arranged between the lower part of the vehicle door (2) and the threshold part (102) of the vehicle body (1).

4. The vehicle door device according to claim 2, characterized in that: The support rod mechanism (4) comprises a rotating rod (401), a vehicle body connecting block (402) and a vehicle door connecting block (403); the vehicle door connecting block (403) is fixedly connected to the vehicle door (2); the vehicle body connecting block (402) is fixedly connected to the vehicle body (1); one end of the rotating rod (401) is rotatably connected to the vehicle door connecting block (403); and the other end of the rotating rod (401) is rotatably and relatively slidably connected to the vehicle body connecting block (402).

5. The vehicle door device according to claim 1, characterized in that: The connection assembly (302) comprises an electric support rod (302a), and two ends of the electric support rod (302a) are rotatably connected to the vehicle body (1) and the vehicle door (2) respectively and correspondingly.

6. The vehicle door device according to claim 1, characterized in that: It also includes a guide wheel mechanism (5) arranged on the vehicle door (2) and a guide rail mechanism (6) arranged on the vehicle body (1), wherein the guide wheel mechanism (5) has a guide wheel portion (5a), and the guide rail mechanism (6) has a guide portion (6a) for guiding the guide wheel portion (5a) to move along an opening and closing path set for the vehicle door (2) near the fully closed position of the vehicle door (2).

7. The vehicle door device according to claim 6, characterized in that: The guide wheel mechanism (5) comprises a guide wheel bracket (501) fixedly connected to the closed side end of the vehicle door (2) based on the opening and closing action of the vehicle door (2) and a guide wheel (502) rotatably connected to the guide wheel bracket (501); the guide rail mechanism (6) comprises a guide rail seat (601) fixedly connected to the vehicle body (1), and the guide rail seat (601) is provided with a guide groove (601a) arranged along the length direction of the vehicle body (1) and allowing the guide wheel (502) to move into when the vehicle door (2) is closed.

8. The vehicle door device according to claim 7, characterized in that: The guide groove (601a) is provided with a guide wheel transverse limiting portion (601a1) for limiting the displacement of the guide wheel (502) along the width direction of the vehicle body after the guide wheel (502) moves into the guide groove (601a).

9. The vehicle door device according to claim 6, 7 or 8, characterized in that: The connecting assembly (302) comprises a first connecting rod (302b), a second connecting rod (302c) and an angle locker (302e); the first connecting rod (302b) and the second connecting rod (302c) are hingedly connected; the other end of the first connecting rod (302b) is rotatably connected to the vehicle door (2); the other end of the second connecting rod (302c) is rotatably connected to the vehicle body (1); the angle locker (302e) has a telescopic portion and is selectively fixedly installed on the first connecting rod (302b) or the second connecting rod (302c); the first connecting rod (302b) or the second connecting rod (302c) on which the angle locker (302e) is not installed is provided with a lock hole (302b1) corresponding to the telescopic portion of the angle locker (302e).

10. The vehicle door device according to claim 9, characterized in that: The connecting assembly (302) further comprises an elastic member (302d), wherein the elastic member (302d) is arranged between the first connecting rod (302b) and the second connecting rod (302c) and causes a smaller angle between the two to have a decreasing trend.

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