CN114718411A

CN114718411A - Multi-connecting-rod sliding door and vehicle

Info

Publication number: CN114718411A
Application number: CN202210319175.3A
Authority: CN
Inventors: 倪辉辉; 龙帅; 陈进
Original assignee: Guangdong Dongjian Automobile Intelligent System Co Ltd
Current assignee: Guangdong Dongjian Automobile Intelligent System Co Ltd
Priority date: 2022-03-29
Filing date: 2022-03-29
Publication date: 2022-07-08

Abstract

The invention relates to the technical field of automobile engineering, and discloses a multi-connecting-rod sliding door and a vehicle, wherein the multi-connecting-rod sliding door comprises: the device comprises a first hinge, a second hinge, a third hinge, a fourth hinge, a first connecting rod, a second connecting rod, a driving mechanism, a gantry and a sliding door; the two opposite ends of the first hinge are respectively connected with the vehicle door frame and the first connecting rod; the two opposite ends of the second hinge are respectively connected with the vehicle door frame and the second connecting rod; the two opposite ends of the third hinge are respectively connected with the sliding door and the first connecting rod; the opposite ends of the fourth hinge are respectively connected with the sliding door and the second connecting rod; the embodiment of the invention effectively solves the problem that the appearance of the vehicle body is influenced by the sliding rail through the circular motion of the sliding door around the rotating shaft of the first hinge, and the first hinge, the second hinge, the third hinge and the fourth hinge adopted by the invention can be arranged on a door frame at the front side of the vehicle and can also be arranged on a door frame at the rear side of the vehicle, so that the door installation of the vehicle has a lot of choices.

Description

Multi-connecting-rod sliding door and vehicle

Technical Field

The invention relates to the technical field of automobile engineering, in particular to a multi-connecting-rod sliding door and a vehicle.

Background

The door frame is a frame body with an entrance and an exit on a vehicle, and the entrance and the exit are necessary paths for passengers to enter and exit the vehicle cabin and take and place articles. A common door for a van vehicle for covering an entrance is in the form of a sliding door, which requires a guide rail to be disposed at a middle portion on an outer side of a vehicle body, and a slider capable of sliding on the guide rail is provided on the sliding door, so that the sliding door can slide in a front-rear direction of the vehicle.

The arrangement of the guide rail on the outer side of the vehicle body influences the appearance of the vehicle body, and because the outer side of the door frame corresponding to the driving position and the assistant driving position does not have a space for installing the guide rail, the sliding door is only suitable for a rear door of the vehicle body and is not suitable for doors corresponding to the driving position and the assistant driving position.

Disclosure of Invention

The purpose of the invention is: the utility model provides a multi-link door, the messenger can avoid in the past need set up the condition of slide rail in the automobile body outside, effectively solves the problem that the slide rail influences the automobile body outward appearance.

In order to achieve the above object, the present invention provides a multi-link sliding door, comprising: the device comprises a first hinge, a second hinge, a third hinge, a fourth hinge, a first connecting rod, a second connecting rod, a driving mechanism, a gantry with an access and a sliding door for covering the access;

the two opposite ends of the first hinge are respectively connected with the door frame and the first connecting rod; the two opposite ends of the second hinge are respectively connected with the door frame and the second connecting rod; the rotating shaft of the first hinge and the rotating shaft of the second hinge are coaxially arranged;

the opposite ends of the third hinge are respectively connected with the sliding door and the first connecting rod; the opposite ends of the fourth hinge are respectively connected with the sliding door and the second connecting rod; the rotating shaft of the third hinge and the rotating shaft of the fourth hinge are coaxially arranged;

the driving mechanism can drive the first hinge to deform so as to drive the first connecting rod to rotate around the rotating shaft of the first hinge, so that the sliding door is opened or closed relative to the vehicle door frame.

Optionally, the method further includes: a fifth hinge, a sixth hinge, and a third link; the opposite two ends of the fifth hinge are respectively connected with the gantry frame and the third connecting rod; the opposite ends of the sixth hinge are respectively connected with the sliding door and the third connecting rod; the rotating shaft of the five hinges, the rotating shaft of the sixth hinge and the rotating shaft of the second hinge are arranged in parallel; and the rotating shaft of the fifth hinge and the rotating shaft of the second hinge are arranged in a staggered manner.

Optionally, the rotating shafts of the first hinge, the second hinge, the third hinge, the fourth hinge, the fifth hinge and the sixth hinge extend in the vertical direction.

Optionally, a connection line between the second hinge rotating shaft and the fourth hinge rotating shaft is parallel to a connection line between the fifth hinge rotating shaft and the sixth hinge rotating shaft.

Optionally, the method further includes: a first gear; the first gear is coaxially connected with a rotating shaft of the first hinge; the first gear is in transmission connection with the driving mechanism.

Optionally, the drive mechanism comprises: the driving motor, the reduction gear box and the second gear; the reduction gear box is respectively connected with an output shaft of the driving motor and the second gear; the first gear is meshed with the second gear.

Optionally, a locking mechanism is arranged on the gantry; the second connecting rod is provided with a U-shaped buckle; under the condition that the sliding door is unfolded relative to the door frame, the U-shaped buckle and the locking mechanism are clamped, so that the door frame and the sliding door are relatively fixed.

Optionally, the first hinge is arranged on the right side of the access opening; the fifth hinge is arranged at the lower side of the access; the third hinge is located directly below the first hinge.

Optionally, the middle part of the first link and the middle part of the second link are respectively recessed away from the sliding door.

The present application further provides a vehicle, comprising: the multi-link sliding door of any one of the above claims.

Compared with the prior art, the multi-connecting-rod sliding door and the vehicle provided by the embodiment of the invention have the beneficial effects that:

according to the embodiment of the invention, the sliding door circularly moves around the rotating shaft of the first hinge, namely, the sliding door moves from the unfolding state to the closing state or from the closing state to the unfolding state relative to the door frame, so that the condition that a sliding rail needs to be arranged on the outer side of the vehicle body in the past can be avoided, and the problem that the appearance of the vehicle body is influenced by the sliding rail can be effectively solved.

Drawings

FIG. 1 is a schematic view of an inside structure of a door frame according to an embodiment of the present invention;

FIG. 2 is an enlarged schematic view of A of FIG. 1;

FIG. 3 is a schematic view of an outer side structure of the door frame according to the embodiment of the present invention;

FIG. 4 is a top view of an embodiment of the present invention (sliding door closed relative to door frame);

FIG. 5 is a schematic view of the structure of the embodiment of the present invention (sliding door opened with respect to the door frame)

FIG. 6 is a schematic diagram showing the positional relationship between the locking mechanism and the U-shaped buckle in the embodiment of the present invention;

fig. 7 is a schematic structural view of a lock mechanism in the embodiment of the present invention.

In the figure, 1, a first hinge; 2. a second hinge; 3. a third hinge; 4. a locking mechanism; 41. A toggle piece; 42. a first elastic reset member; 43. a U-shaped buckle; 44. a second mounting seat; 45. A first pivot; 46. a locking member; 47. a second pivot; 48. a latch bolt; 481. an insertion opening; 482. a bayonet; 5. a first link; 6. a second link; 7. a drive mechanism; 71. a drive motor; 72. a reduction gear box; 73. a second gear; 8. a fifth hinge; 9. a sixth hinge; 10. A third link; 11. a first gear; 12. a fourth hinge; 13. a gantry frame; 14. a sliding door; 15. and (6) clamping the block.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

First, it should be noted that the orientations of top, bottom, upward, downward, and the like referred to herein are defined with respect to the orientation in the respective drawings, are relative concepts, and thus can be changed according to different positions and different practical situations in which they are located. These and other orientations, therefore, should not be used in a limiting sense.

It should be noted that the term "comprising" does not exclude other elements or steps and the "a" or "an" does not exclude a plurality.

Furthermore, it should be further noted that any single technical feature described or implied in the embodiments herein, or any single technical feature shown or implied in the figures, can still be combined between these technical features (or their equivalents) to obtain other embodiments of the present application not directly mentioned herein.

It will be further understood that the terms "first," "second," and the like, are used herein to describe various information and should not be limited to these terms, which are used only to distinguish one type of information from another. For example, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information, without departing from the scope of the present application.

It should be noted that in different drawings, the same reference numerals indicate the same or substantially the same components.

As shown in fig. 1, 3, 4, and 5, a multi-link sliding door according to a preferred embodiment of the present invention includes: the door frame includes a first hinge 1, a second hinge 2, a third hinge 3, a fourth hinge 12, a first link 5, a second link 6, a drive mechanism 7, a door frame 13 having an entrance, and a slide door 14 for covering the entrance. It is understood that the door frame 13 is a portion of the vehicle frame where a door is provided, and has an entrance for a user to enter and exit.

Opposite ends of the first hinge 1 are connected with the door frame 13 and the first connecting rod 5 respectively. The opposite ends of the second hinge 2 are connected with the door frame 13 and the second connecting rod 6 respectively. The rotating shaft of the first hinge 1 and the rotating shaft of the second hinge 2 are coaxially arranged.

Opposite ends of the third hinge 3 are connected to the sliding door 14 and the first link 5, respectively. Opposite ends of the fourth hinge 12 are connected to the sliding door 14 and the second link 6, respectively. The rotating shaft of the third hinge 3 and the rotating shaft of the fourth hinge 12 are coaxially arranged.

The driving mechanism can drive the first hinge 1 to deform so as to drive the first connecting rod 5 to rotate around the rotating shaft of the first hinge 1, so that the sliding door 14 is unfolded or closed relative to the door frame 13.

When the sliding door 14 of the embodiment of the invention is closed relative to the door frame 13, the sliding door 14 covers the outer side of the entrance; when the sliding door 14 is unfolded with respect to the door frame 13, the sliding door 14 is moved away from the outside of the doorway so that a user can get in and out of the doorway. In the embodiment of the present invention, the rotating shaft of the first hinge 1 and the rotating shaft of the second hinge 2 are in the same straight line (hereinafter referred to as a first rotation center), so that when the driving mechanism drives the rotating shaft of the first hinge 1 to rotate, the sliding door 14 makes a circular reciprocating motion around the first rotation center, that is, the sliding door 14 moves from the unfolded state to the closed state or from the closed state to the unfolded state relative to the door frame 13. The unfolding and closing mode of the sliding door 14 in the embodiment of the invention can avoid the situation that a sliding rail needs to be arranged on the outer side of the vehicle body in the past, and effectively solves the problem that the sliding rail influences the appearance of the vehicle body.

In a possible embodiment, the rotating shafts of the first hinge 1 and the second hinge 2 are perpendicular to the ground, so that the sliding door 14 can move in the front-back direction of the vehicle body without a slide rail in the process of overturning relative to the first rotating center, therefore, the multi-link sliding door of the present application can be applied to the front side door frame 13 and the back side door frame 13 of the vehicle, so that the front side door of the vehicle no longer only has a door opening mode of an overturning door.

Specifically, referring to fig. 5, the inner side of the door frame 13 is further provided with a mounting frame, the mounting frame is located below the entrance, the second hinge 2 is arranged on the mounting frame, the door frame 13 is provided with a through groove, and the second connecting rod 6 extends to the outer side of the door frame 13 through the through groove. Meanwhile, the first hinge 1 is also arranged on the inner side of the door frame 13, so that the first hinge 1 and the second hinge 2 cannot be observed no matter the sliding door 14 is unfolded or closed relative to the door frame 13, and the attractiveness of the automobile body is improved.

One possible embodiment, referring to fig. 4 and 5, an embodiment of the present invention further includes: a fifth hinge 8, a sixth hinge 9, and a third link 10. Opposite ends of the fifth hinge 8 are connected to the door frame 13 and the third link 10, respectively. Opposite ends of the sixth hinge 9 are connected to the sliding door 14 and the third link 10, respectively. The rotating shaft of the fifth hinge, the rotating shaft of the sixth hinge 9, and the rotating shaft of the second hinge 2 are arranged in parallel, and the rotating shaft of the fifth hinge 8 and the rotating shaft of the second hinge 2 are not collinear, so that when the sliding door 14 makes a circular motion around the first rotation center, the sliding door 14 also makes a circular motion around the rotating shaft of the fifth hinge 8 (hereinafter referred to as a second rotation center). In this embodiment, the connection lines of the sixth hinge 9, the third hinge 3, and the fourth hinge 12 on the sliding door 14 are triangular, so that the connection stability of the door frame 13 and the sliding door 14 can be enhanced, and the sliding door 14 and the door frame 13 can be prevented from being misaligned.

Specifically, the rotating shaft of the first hinge 1, the rotating shaft of the second hinge 2, the rotating shaft of the third hinge 3, the rotating shaft of the fourth hinge 12, the rotating shaft of the fifth hinge 8, and the rotating shaft of the sixth hinge 9 all extend in the vertical direction, that is, the first rotation center and the second rotation center both extend in the vertical direction, so that the sliding door 14 can rotate relative to the rotating shaft in the vertical direction, and the sliding door 14 can translate in the front-rear direction of the vehicle.

Specifically, the connecting line between the rotating shaft of the second hinge 2 and the rotating shaft of the fourth hinge 12 is parallel to the connecting line between the rotating shaft of the fifth hinge 8 and the rotating shaft of the sixth hinge 9, so that the connecting lines of the second hinge 2, the fourth hinge 12, the fifth hinge 8, and the sixth hinge 9 form a parallelogram, that is, during the process that the sliding door 14 rotates around the first rotation center through the second connecting rod 6, the sliding door 14 also rotates around the second rotation center through the third connecting rod 10, so that the fifth hinge 8, the sixth hinge 9, and the third connecting rod 10 enhance the connection stability of the door frame 13 and the sliding door 14 and prevent the sliding door 14 and the door frame 13 from being misaligned without interfering with the rotation of the sliding door 14 around the first rotation center.

The first hinge 1, the second hinge 2, the third hinge 3, the fourth hinge 12 and the fifth hinge 8 are all in a hinge form, blades capable of rotating around a rotating shaft are arranged on two sides of the rotating shaft, and one blade is fixedly connected with the rotating shaft.

In a possible embodiment, referring to fig. 2, the embodiment of the present invention further includes: a first gear 11. The first gear 11 is coaxially connected with the rotating shaft of the first hinge 1, so that the first gear 11 can be driven to rotate by the driving mechanism 7, and the sliding door 14 is driven to do circular motion relative to the rotating shaft of the first hinge 1. The first gear 11 is in transmission connection with the driving mechanism.

Preferably, limited by the space of the door frame 13, the sliding door 14 does not rotate more than 180 degrees relative to the door frame 13, so that the first gear 11 is a sector gear, which is more compact than a common gear, to further reduce the weight and installation space of the multi-link sliding door of the present application.

Further, referring to fig. 2, the driving mechanism 7 includes: a drive motor 71, a reduction gear box 72, and a second gear 73. The reduction gear box 72 is respectively connected with the output shaft of the driving motor 71 and the second gear 73, the rotating shafts of the first gear 11 and the second gear 73 are parallel, and the first gear 11 is meshed with the second gear 73, so that the first gear 11 can be driven to rotate by the rotation of the driving motor 71.

It can be understood that the reduction gear box 72 can still be opened or closed by manpower after the driving force of the driving motor 71 is lost, so that the sliding door 14 of the present application can be opened or closed by both electric power and manpower. Meanwhile, the reduction gear box 72 has a damping force, so that the sliding door 14 can be suspended at any position in the opening process, and the use diversity of the multi-link sliding door is improved.

In a possible embodiment, with reference to fig. 5-7, the door frame 13 is provided with a locking mechanism 4. The second connecting rod 6 is provided with a U-shaped buckle 43. When the sliding door 14 is unfolded relative to the door frame, the U-shaped buckle 43 is engaged with the locking mechanism 4, so that the door frame and the sliding door 14 are fixed relative to each other, and the unfolding is the maximum opening state of the sliding door 14 relative to the door frame 13.

It can be understood that, the locking mechanism 4 here is the locking mechanism 4 existing on the market, and only needs to be able to lock the U-shaped buckle 43 after the U-shaped buckle 43 is in place, and at the same time, it is able to disengage the locking mechanism 4 from the locking of the U-shaped buckle 43 through electric operation.

In a possible embodiment, with reference to fig. 7, the locking mechanism 4 comprises: the driving member 41, the first elastic reset member 42, the second elastic reset member, a second mounting seat 44 disposed on the door frame, a locking member 46 pivoted on the second mounting seat 44 through a first pivot 45, and a latch 48 pivoted on the second mounting seat 44 through a second pivot 47. Wherein the first pivot 45 and the second pivot 47 are arranged in parallel.

The locking piece 46 is provided with a clamping block 15, and the locking tongue 48 is formed with an insertion hole 481 for clamping the clamping block 15 and a bayonet 482 for clamping the U-shaped buckle 43. The engaging block 15 is fitted to the insertion hole 481.

The lock tongue 48 is movable relative to the second pivot 47 between a lock position and an unlock position, and the lock tongue 48 is not disengaged from each other in the lock position where the lock tongue 48 is able to lock the U-shaped buckle 43 and the lock tongue 48, and the lock tongue 48 is disengaged from each other in the unlock position where the lock tongue 48 is able to unlock the U-shaped buckle 43 and the lock tongue 48.

Under the condition that the locking block 15 is clamped in the insertion opening 481, the locking piece 46 and the lock tongue 48 are relatively fixed to limit the locking piece 46 at the locking position, so that the U-shaped buckle 43 and the lock tongue 48 can be locked and cannot be separated from each other.

When the latch tongue 48 is located at the unlocking position, the opening of the bayonet 482 faces the U-shaped catch 43, so that the U-shaped catch 43 can be inserted into the bayonet 482. When the locking tongue 48 is located at the locking position, the opening of the bayonet 482 faces away from the U-shaped catch 43, so that the U-shaped catch 43 and the locking tongue 48 can be locked and cannot be disengaged from each other.

The first elastic resetting piece 42 is connected to the locking piece 46, and when the locking tongue 48 is located at the locking position, the first elastic resetting piece 42 is configured to apply a first elastic force to the locking piece 46 so as to enable the engaging block 15 to be engaged with the insertion hole 481. The toggle member 41 is connected to the locking member 46, and the toggle member 41 is configured to apply a first pushing force to the locking member 46 to disengage the locking block 15 from the insertion opening 481, where the first pushing force of the toggle member 41 is provided for an external electric push rod.

The second elastic restoring member is connected to the latch tongue 48, and when the locking block 15 is separated from the insertion hole 481, the second elastic restoring member is used for applying a second elastic force to the latch tongue 48 to move the latch tongue 48 from the locking position to the unlocking position.

The U-shaped buckle 43 is used for applying a second pushing force to the locking bolt 48 when the locking bolt 48 is located at the unlocking position so as to move the locking bolt 48 from the unlocking position to the locking position.

In the locking position, the U-shaped catch 43 is located below the second pivot 47, so that the second pivot 47 can push the latch tongue 48 to rotate clockwise around the second pivot 47 after being inserted into the notch 482 of the latch tongue 48.

Wherein, the first elastic force of the first elastic reset piece 42 is clockwise. The second elastic direction of the second elastic reset piece is anticlockwise.

The operation of the locking tongue 48 and locking member 46 is explained below:

referring to fig. 7, as illustrated in the view angle of fig. 7, in the initial state, the opening of the bayonet 482 of the latch tongue 48 faces away from the U-shaped buckle 43, and the catching block 15 is caught in the insertion opening 481. The first pushing force is applied to the toggle member 41 by the external pushing rod to rotate the locking member 46 counterclockwise relative to the first pivot 45, and at this time, the locking block 15 is separated from the insertion opening 481 to separate the latch tongue 48 from the limit of the locking member 46. The locking tongue 48 rotates counterclockwise relative to the second pivot 47 under the second elastic force of the second elastic reset piece until the opening of the bayonet 482 faces the U-shaped buckle 43, the U-shaped buckle 43 is inserted into the bayonet 482, the U-shaped buckle 43 pushes the locking tongue 48 to rotate clockwise around the second pivot 47 at this time to move the locking tongue 48 from the unlocked position to the locked position because the U-shaped buckle 43 is located below the second pivot 47, and the insertion opening 481 rotates clockwise relative to the second pivot 47 to reinsert the locking block 15 into the insertion opening 481 at this time, and the locking of the U-shaped buckle 43 and the locking tongue 48 is completed, when unlocking is needed, only the locking piece 46 rotates counterclockwise relative to the first pivot 45 by applying the first pushing force to the toggle piece 41 through the external push rod.

Specifically, the first elastic resetting member 42 and the second elastic resetting member are torsion springs respectively sleeved on the first pivot 45 and the second pivot 47, and of course, other installation manners of torsion springs can be realized, which is not limited herein.

Further, referring to fig. 1 and 5, the first hinge 1 is provided on the right side of the doorway such that the moving direction of the sliding door 14 during the unfolding is from the rear of the vehicle to the front of the vehicle, and the moving direction during the closing is from the front of the vehicle to the rear of the vehicle. Fifth hinge 8 sets up the downside of access & exit, third hinge 3 is located under first hinge 1, third hinge 3 and fifth hinge 8 are for strengthening the connection steadiness of door frame 13 and sliding door 14, consequently can set up to hide at the downside of access & exit, are favorable to improving the whole outward appearance nature of vehicle.

Further, the first hinge 1 and the second hinge 2 need to be arranged on the inner side surface of the door frame 13, the first hinge 1 and the second hinge 2 are respectively arranged on the right side of the entrance, the middle part of the first connecting rod 5 and the second connecting rod 6 respectively face away from the sliding door 14, and the recessed part can avoid the edge of the entrance, namely the edge of the right side of the entrance can enter the recessed parts of the first connecting rod 5 and the second connecting rod 6, so that the sliding door 14 can be unfolded by a larger angle relative to the door frame 13.

The working process of the invention is as follows: when the sliding door 14 is closed relative to the door frame 13 and needs to be unfolded, the driving motor 71 rotates to drive the first gear 11 to rotate, so that the sliding door 14 rotates around the first rotation center and is unfolded from the rear to the front of the vehicle. When the sliding door 14 is in an unfolded state relative to the door frame 13 and needs to be closed, the driving motor 71 rotates to drive the first gear 11 to rotate, so that the sliding door 14 rotates around the first rotation center and is closed from the front to the rear of the vehicle.

In summary, the embodiment of the present invention provides a multi-link sliding door and a vehicle, which can avoid the situation that a slide rail needs to be arranged on the outer side of a vehicle body in the past through the unfolding and closing manner of the sliding door 14 in a sliding manner, and effectively solve the problem that the slide rail affects the appearance of the vehicle body, and the first hinge 1, the second hinge 2, the third hinge 3 and the fourth hinge 12 adopted in the present application can be installed on the door frame 13 on the front side of the vehicle and also can be installed on the door frame 13 on the rear side of the vehicle, so that the door installation of the vehicle has many options.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A multi-link sliding door comprising: the device comprises a first hinge, a second hinge, a third hinge, a fourth hinge, a first connecting rod, a second connecting rod, a driving mechanism, a gantry with an access and a sliding door for covering the access;

2. The multi-link sliding door according to claim 1 further comprising: a fifth hinge, a sixth hinge, and a third link; the opposite two ends of the fifth hinge are respectively connected with the gantry frame and the third connecting rod; the opposite ends of the sixth hinge are respectively connected with the sliding door and the third connecting rod; the rotating shaft of the five hinges, the rotating shaft of the sixth hinge and the rotating shaft of the second hinge are arranged in parallel; and the rotating shaft of the fifth hinge and the rotating shaft of the second hinge are arranged in a staggered manner.

3. The multi-link sliding door according to claim 2 wherein the rotating shafts of the first hinge, the second hinge, the third hinge, the fourth hinge, the fifth hinge, and the sixth hinge each extend in a vertical direction.

4. The multi-link sliding door according to claim 3 wherein a connecting line between the second hinge shaft and the fourth hinge shaft is parallel to a connecting line between the fifth hinge shaft and the sixth hinge shaft.

5. The multi-link sliding door according to claim 1 further comprising: a first gear; the first gear is coaxially connected with a rotating shaft of the first hinge; the first gear is in transmission connection with the driving mechanism.

6. The multi-link sliding door according to claim 5 wherein said drive mechanism comprises: the driving motor, the reduction gear box and the second gear; the reduction gear box is respectively connected with an output shaft of the driving motor and the second gear; the first gear is meshed with the second gear.

7. The multi-link sliding door according to claim 1 wherein a locking mechanism is provided on said door frame; the second connecting rod is provided with a U-shaped buckle; under the condition that the sliding door is unfolded relative to the door frame, the U-shaped buckle and the locking mechanism are clamped, so that the door frame and the sliding door are relatively fixed.

8. The multi-link sliding door according to claim 2 wherein said first hinge is disposed to the right of said doorway; the fifth hinge is arranged at the lower side of the access; the third hinge is located directly below the first hinge.

9. The multi-link sliding door according to claim 1 wherein the intermediate portions of the first and second links, respectively, are recessed away from the sliding door.

10. A vehicle, characterized by comprising: the multi-link sliding door according to any one of claims 1-9.