CN113863797B

CN113863797B - Dual stop gear of car side sliding door

Info

Publication number: CN113863797B
Application number: CN202111000765.1A
Authority: CN
Inventors: 任信; 王莉; 李�杰; 张健慧; 陶鑫; 蔡澄; 彭辉
Original assignee: Dongfeng Automobile Co Ltd
Current assignee: Dongfeng Automobile Co Ltd
Priority date: 2021-08-27
Filing date: 2021-08-27
Publication date: 2023-03-24
Anticipated expiration: 2041-08-27
Also published as: CN113863797A

Abstract

The invention relates to a double-limiting mechanism of an automobile side sliding door, which comprises a lock catch, a base, a first locking mechanism and a second locking mechanism, wherein the lock catch is formed by a body and a lock; the base is provided with a longitudinal groove in the middle, two side walls are arranged on two sides of the groove respectively, the first locking mechanism is arranged in the groove, and the second locking mechanism is arranged on the side wall on one side. The double-limiting mechanism for the automobile side sliding door has the advantages that after the side sliding door is opened, the side sliding door can be kept fixed on the lock catch under the combined action of the four-bar mechanism formed by the lock tongue, the connecting support, the clamping plate and the clamping jaw in the first locking mechanism and the second locking mechanism, the side sliding door does not move any more no matter which posture the automobile is in, and the second locking mechanism and the first locking mechanism can be driven to unlock in succession unless a handle on the side sliding door is pulled, so that the reliability, the convenience and the safety of the automobile are improved.

Description

Dual stop gear of car side sliding door

Technical Field

The invention relates to the technical field of automobile side sliding doors, in particular to a double limiting mechanism of an automobile side sliding door.

Background

With the development of economy, automobiles become very important vehicles and transportation tools in daily life of people, side sliding doors are generally commonly found on MPV (multi-purpose vehicles) models and commercial vehicles, and the side sliding doors have the greatest advantage of being convenient to open, facilitating passengers to get in and out of a carriage, facilitating goods loading and unloading in the carriage and the like. There are two main types of side-sliding door positioning mechanisms in common use.

The first type of side sliding door limiting mechanism is used for fixing the side sliding door by means of elasticity and rigidity of metal parts of the first type of side sliding door limiting mechanism, and the first type of side sliding door limiting mechanism is poor in durability due to frequent use, and finally affects reliability and safety of an automobile.

The structure of the second side sliding door limiting mechanism is similar to that of a steam side sliding door locking mechanism, but the unlocking force of the side sliding door limiting mechanism is very small, after the side sliding door limiting mechanism is unlocked by accidental collision or slight external force, particularly when a vehicle is parked on a road with a certain gradient, the side sliding door limiting mechanism can be automatically unlocked under the influence of self gravity of the side sliding door, the side sliding door is in a free state after unlocking, even can be automatically closed, and the potential safety hazard is increased when the automobile convenience is poor.

Disclosure of Invention

The invention aims to provide a double limiting mechanism for a side sliding door of an automobile, which can ensure that the side sliding door is completely fixed after being opened, solve the problem that the side sliding door is unlocked by slight external force or the influence of the gravity of the side sliding door and improve the reliability, convenience and safety of the automobile.

In order to achieve the purpose, the invention designs a double-limiting mechanism of an automobile side sliding door, which comprises a lock catch, a base, a first locking mechanism and a second locking mechanism, wherein the lock catch consists of a body and a lock column; a longitudinal groove is formed in the middle of the base, two side walls are arranged on two sides of the groove respectively, the first locking mechanism is arranged in the groove, and the second locking mechanism is arranged on one side wall; the first locking mechanism comprises a lock tongue arranged at one end of the base, a connecting support, a first elastic element penetrating the connecting support, a first rotating shaft, a second rotating shaft and a third rotating shaft, wherein the lock tongue and one end of the connecting support are movably connected to two side walls respectively; the second locking mechanism comprises a clamping plate arranged on the side surface of the lock tongue, a clamping jaw abutted against one end of the clamping plate, a first connecting piece and a second connecting piece which respectively connect the clamping plate and the clamping jaw with the base, a second elastic element and a third elastic element which are respectively used for resetting the clamping plate and the clamping jaw, and a pull wire assembly penetrating through the clamping jaw and the other end of the base; an open slot is formed in one end of the clamping plate, and one end of the third rotating shaft is located in the open slot, so that the first locking mechanism and the second locking mechanism are linked.

As a preferred scheme, a first bend, a second bend and a third bend are respectively arranged outwards on the side wall of one side; a fourth bend is further arranged at one end of the clamping plate; one end of the clamping jaw is provided with a fifth bend, and the other end of the clamping jaw is provided with a sixth bend; two ends of the second elastic element are respectively sleeved on the first bend and the fourth bend; two ends of the third elastic element are respectively sleeved on the third bend and the sixth bend; one end of the stay wire assembly penetrates through the fifth bend, the middle part of the stay wire assembly is fixed on the second bend, and the other end of the stay wire assembly is connected with the side sliding door. The second elastic element, the third elastic element and the stay wire assembly are respectively sleeved on the bends to avoid interference among all parts when the parts move mutually; the movement of the pull wire assembly drives the movement of the clamping jaw and the clamping plate, thereby driving the first locking mechanism to move.

Preferably, the first bend to the sixth bend are perpendicular to the side wall, and the first bend and the fourth bend, the second bend and the fifth bend, and the third bend and the sixth bend are parallel to each other in pairs. All bends are perpendicular to the side wall, and the bends connecting the second elastic element, the third elastic element and the two ends of the pull wire assembly are parallel to each other, so that the loss of force transmission of the whole mechanism is minimum, and the unlocking efficiency of the mechanism is improved.

As the preferred scheme, spring bolt one end is equipped with the spring bolt groove with lock post meshing, is equipped with the first spout that is used for wearing to establish first pivot in the middle of the spring bolt, and the spring bolt other end is equipped with the third spout that is used for wearing to establish the shaft hole of third pivot and installation linking bridge. The lock tongue and the movable support are connected through the rotating shaft, so that the lock tongue and the movable support can move relatively, and the sliding groove is designed to provide a moving space for the lock tongue and the movable support to move relatively in the longitudinal groove of the base.

As the preferred scheme, linking bridge one end is equipped with the second spout that is used for wearing to establish the second pivot, and the linking bridge other end is equipped with the joint groove that is used for joint third pivot. The sliding groove provides a moving space for the relative movement of the connecting bracket in the longitudinal groove of the base, and the clamping groove enables the connecting bracket and the third rotating shaft to be always in a meshed state.

As a preferred scheme, the pull wire assembly comprises a sleeve with a hollow inner part, a pull wire penetrating through the hollow cavity of the sleeve, and a ball head fixedly connected with one end of the pull wire, wherein the other end of the pull wire is connected with the door handle.

Preferably, the drawing axis is parallel to the side wall. Thus, the loss of force transmission in the process of drawing movement is minimum, and the operation is most labor-saving.

Preferably, the unlocking force range of the first locking mechanism is 115N-125N, and the unlocking force range of the second locking mechanism is 65N-75N. The second locking mechanism is connected with the door handle, and unlocking depends on pulling the door handle by a person, so that the unlocking force range is 65N-75N, and the door handle is in accordance with ergonomics; the unlocking of the first locking mechanism needs the second locking mechanism to unlock firstly, meanwhile, the force generated by pushing the side sliding door is pushed by a person, and the second locking mechanism and the side sliding door can unlock only under the action of the force, so that the unlocking force range is 115N-125N, the side sliding door can be effectively prevented from being unlocked under the influence of slight external force or the gravity of the side sliding door, and the side sliding door is safer and more reliable.

The invention relates to a double-limiting mechanism of an automobile side sliding door, which comprises the following components:

and (3) locking process: the acting force generated by pushing the side sliding door is transmitted to the spring bolt of the first locking mechanism, so that the spring bolt rotates upwards along the groove of the base and hooks the lock column, the spring bolt drives the connecting bracket to rotate, and at the moment, the first elastic element is in a stretching reset state, so that the locking of the first locking mechanism is completed; first locking mechanism transmits the effort to second locking mechanism's cardboard through the third pivot on, makes the cardboard take place to rotate, and the cardboard drives the jack catch of butt with it and also takes place to rotate, and second elastic element, third elastic element are in the shrink reset state this moment to accomplish second locking mechanism's locking.

An unlocking process: the acting force generated when a person pulls the door handle on the side sliding door is transmitted to the drawn wire of the second locking mechanism, the drawn wire drives the clamping jaw to rotate, the clamping jaw drives the clamping plate abutted against the clamping jaw to rotate, and at the moment, the second elastic element and the third elastic element are in a stretching working state, so that the unlocking of the second locking mechanism is completed; the second locking mechanism transmits the acting force to the connecting support of the first locking mechanism through the third rotating shaft, the connecting support drives the spring bolt to rotate, the first elastic element is in a contraction working state at the moment, and meanwhile, the side sliding door is pushed by hand to unlock the first locking mechanism.

In conclusion, the double-limiting mechanism for the automobile side sliding door has the advantages that after the side sliding door is opened, the side sliding door can be kept fixed on the lock catch through the combined action of the four-bar mechanism formed by the lock tongue, the connecting bracket, the clamping plate and the clamping jaws in the first locking mechanism and the second locking mechanism, the side sliding door does not move any more no matter which posture the automobile is in, the second locking mechanism can be unlocked unless the door handle on the side sliding door is pulled, and meanwhile, the first locking mechanism is unlocked by pushing the side sliding door with a hand.

Drawings

FIG. 1 is a three-dimensional structure view of a double-limiting mechanism of a side sliding door of an automobile in a locking state;

FIG. 2 is a perspective view of an unlocked state of a double-limiting mechanism of a side sliding door of an automobile;

FIG. 3 is a perspective view of the first locking mechanism of FIG. 1;

FIG. 4 is a perspective view of the second locking mechanism of FIG. 1;

FIG. 5 is a perspective view of the base of FIG. 3;

fig. 6 is a perspective structural view of the locking tongue in fig. 3;

FIG. 7 is a perspective view of the connecting bracket of FIG. 3;

FIG. 8 is a perspective view of the clamping plate in FIG. 4;

FIG. 9 is a perspective view of the pawl of FIG. 4;

FIG. 10 is a perspective view of the wire drawing assembly of FIG. 4;

FIG. 11 is a schematic view of the installation of the dual stop mechanism of the automobile side sliding door on the side sliding door;

FIG. 12 is a force analysis diagram of the second locking mechanism during unlocking;

FIG. 13 is a force analysis diagram of the first locking mechanism during unlocking;

FIG. 14 is a force analysis diagram of the first locking mechanism during locking;

FIG. 15 is a force analysis diagram of the second locking mechanism during locking;

the components in the figures are numbered as follows:

1, lock catch 1: a body 11, a lock cylinder 12;

base 2: the structure comprises a groove 21, a side wall 22, a first bend 23, a second bend 24, an arc notch 241, a third bend 25, a through hole 26, a connecting hole 27, a connecting groove 28 and an arc groove 29;

first locking mechanism 3: the locking bolt 31 (wherein: the locking bolt slot 311, the first sliding slot 312, the shaft hole 313 and the third sliding slot 314), the connecting bracket 32 (wherein: the second sliding slot 321 and the clamping slot 322), the first elastic element 33, the first rotating shaft 34, the second rotating shaft 35 and the third rotating shaft 36;

the second locking mechanism 4: a clamping plate 41 (wherein, the opening groove 411 and the fourth bend 412), a claw 42 (wherein, the fifth bend 421, the sixth bend 422, the L-shaped gap 423 and the avoiding groove 424), a first connecting piece 43, a second connecting piece 44, a second elastic element 45, a third elastic element 46 and a pull wire assembly 47 (wherein, the sleeve 471, the shell 472, the pull wire 473, the ball head 474 and the clamping groove 475);

the side sliding door 5, the door handle 51; a support arm 6.

Detailed Description

In order to make the technical problems solved, the technical solutions adopted and the technical effects achieved by the present invention clearer, the technical solutions of the present invention are further described below by way of specific embodiments with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements associated with the present invention are shown in the drawings.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The invention relates to a double-limiting mechanism of an automobile side sliding door, which comprises a lock catch 1, a base 2, a first locking mechanism 3 and a second locking mechanism 4, as shown in figures 1-2.

1, lock catch 1: is composed of a body 11 and a lock cylinder 12. The lock catch 1 is fixed on the vehicle body and is close to the tail of the vehicle.

Base 2: as shown in fig. 5, a longitudinal rectangular groove 21 is formed in the middle of the base, two side walls 22 are respectively arranged on two sides of the groove, the first locking mechanism 3 is arranged in the groove 21, and the second locking mechanism 4 is arranged on the side wall 22 on one side; a first bend 23, a second bend 24 and a third bend 25 are respectively arranged on the side wall 22 on one side and are perpendicular to the side wall; the side wall 22 on the same side is also provided with two connecting holes 27 for mounting a first connecting piece 43 and a second connecting piece 44; the side walls 22 on two sides are symmetrically provided with a through hole 26 for mounting a first rotating shaft 34, an arc groove 29 for mounting a second rotating shaft 35 and a connecting groove 28 for mounting a third rotating shaft 36. The connecting grooves 28 and the circular arc grooves 29 can also reduce the weight of the base 2. The base 2 is fixed to a support arm 6 of the side sliding door 5 by screw connection.

First locking mechanism 3: as shown in fig. 3, the device comprises a locking tongue 31 arranged at one end of a base 2, a connecting bracket 32, a first elastic element 33 penetrating the connecting bracket 32, a first rotating shaft 34 and a second rotating shaft 35 which respectively movably connect one ends of the locking tongue 31 and the connecting bracket 32 to two side walls 22, and a third rotating shaft 36 movably connecting the other ends of the locking tongue 31 and the connecting bracket 32; the first elastic element 33 selects a compression spring which is in a compressed state when operated.

The bolt 31: as shown in fig. 6, one end of the bolt 31 is provided with a bolt slot 311 engaged with the lock cylinder 12, a first sliding slot 312 for passing through the first rotating shaft 34 is provided in the middle of the bolt 31, and the other end of the bolt 31 is provided with a shaft hole 313 for passing through the third rotating shaft 36 and a third sliding slot 314 for mounting the connecting bracket 32.

The connecting bracket 32: as shown in fig. 7, one end of the connecting bracket 32 is provided with a second sliding slot 321 for passing through the second rotating shaft 35, and the other end of the connecting bracket is provided with a clamping slot 322 for clamping the third rotating shaft 36.

The second locking mechanism 4: as shown in fig. 4, the locking device includes a locking plate 41 disposed on a side surface of the latch 31, a claw 42 abutting against one end of the locking plate 41, a first connecting member 43 and a second connecting member 44 respectively connecting the locking plate 41 and the claw 42 to the base 2, a second elastic member 45 and a third elastic member 46 respectively restoring the locking plate 41 and the claw 42, and a wire pulling assembly 47 penetrating through the claw 42 and the other end of the base 2. The first connecting member 43 and the second connecting member 44 may be selected from rivets or shoulder bolts, and the embodiment is selected from rivets. The second elastic element 45 and the third elastic element 46 select the extension spring which is in a stretched state when operated.

The card 41: as shown in fig. 8, one end of the third shaft 36 is provided with an opening slot 411, and one end of the third shaft is located in the opening slot 411, so that the first locking mechanism 3 and the second locking mechanism 4 form linkage. One end of the clamping plate 41 is further provided with a fourth bend 412 and an arc bayonet for clamping the clamping jaw 42.

The jaw 42: as shown in fig. 9, one end is provided with a fifth bend 421, and the other end of the claw 42 is provided with a sixth bend 422; the middle part of the claw 42 is also provided with an avoiding groove 424 for avoiding the second rotating shaft 35; the claws 42 are also provided at one end with arc-shaped slots adapted to the sliding of the catch plate 41 on the claws 42.

The first bend 23 to the sixth bend 422 are all perpendicular to the side wall 22, and the first bend 23 and the fourth bend 412, the second bend 24 and the fifth bend 421, and the third bend 25 and the sixth bend 422 are parallel to each other two by two; the first bend 23, the third bend 25, the fourth bend 412 and the sixth bend 422 are I-shaped; one end of the second bend 24 is provided with an arc notch 241; the fifth bend 421 is L-shaped, and the bottom thereof is provided with an L-shaped notch 423. The I-shaped design has simple structure and small occupied space; the arc notch and the L-shaped notch facilitate the installation of the pull wire assembly.

The two ends of the second elastic element 45 are respectively sleeved on the first bend 23 and the fourth bend 412; the third elastic element 46 is sleeved at its two ends on the third bend 25 and the sixth bend 422, respectively.

The wire assembly 47: as shown in fig. 10, the device comprises a hollow sleeve 471 and a housing 472 fixedly connected, a pull string 473 passing through the hollow cavity of the sleeve 471 and the housing 472, a ball head 474 fixedly connected with one end of the pull string 473, and the other end of the pull string 473 is connected with the door handle 51. The axis of the wire 473 is parallel to the side wall 22. One end of the pull wire assembly 47 is arranged on the fifth bend 421 in a penetrating manner, the middle part of the pull wire assembly 47 is clamped and fixed on the second bend 24 through a clamping groove 475, and the other end of the pull wire assembly 47 is connected with the side sliding door 5. The sleeve 471 and the housing 472 have lubricating oil in the cavity to reduce the friction of the wire 473 moving back and forth in the cavity. The wire 473 is a flexible elongated wire.

The unlocking force range of the first locking mechanism 3 is 115N-125N, and the unlocking force range of the second locking mechanism 4 is 65N-75N. The second locking mechanism 4 is connected with the door handle 51, and unlocking depends on people to pull the door handle 51, so that the unlocking force range is 65N-75N, and the ergonomics is met; the unlocking of the first locking mechanism 3 needs the second locking mechanism 4 to unlock firstly, meanwhile, the force generated by pushing the side sliding door 5 by a person acts on the two mechanisms simultaneously to unlock, so the unlocking force range is 115N-125N, the side sliding door 5 can be effectively prevented from being unlocked by slight external force or the influence of the gravity of the side sliding door 5, and the unlocking is safer and more reliable.

The first locking mechanism 3 and the second locking mechanism 4 are arranged on the side sliding door as shown in fig. 11, the lock catch 1 is fixedly arranged on a vehicle body close to one side of the tail of the vehicle through a bolt, the first locking mechanism 3 and the second locking mechanism 4 are fixedly arranged on the supporting arm 6 through a bolt as shown by a double arrow in the figure, one end of the supporting arm 6 is fixed with the side sliding door 5 through a bolt, and the other end of the supporting arm 6 can slide back and forth on a vehicle body sliding rail.

An unlocking process: as shown in fig. 12-13.

Force F1 generated when a person pulls a handle on the side sliding door 5 is transmitted to the pull wire 473 of the second locking mechanism 4, the pull wire 473 transmits the force F1 to the pawl 42 through the ball 474, the pawl 42 rotates around the second connecting piece 44 in the direction indicated by omega 1, and the third elastic element 46 is stretched by the pulling force F2 of the pawl 42. Meanwhile, the clamping plate 41 loses the supporting force after rotating for a certain angle due to the clamping claws 42, the clamping plate 41 rotates around the first connecting piece 43 in the direction of omega 2 under the action of the pulling force F3 of the second elastic element 45, the clamping plate 41 stops rotating under the action of the resistance F4 after contacting with the third rotating shaft 36, and at the moment, the second locking mechanism 4 completes unlocking.

Meanwhile, an acting force F6 generated by a person pushing the side sliding door 5 towards the vehicle head direction is transmitted to the bolt 31 of the first locking mechanism 3, so that the bolt 31 has a tendency of rotating and moving, that is, an acting force F7 exists between the bolt 31 and the third rotating shaft 36, the bolt 31 transmits a force F7 to the connecting bracket 32 through the third rotating shaft 36, the connecting bracket 32 transmits a force F8 to the first elastic element 33, because one end of the first elastic element 33 is limited by the second rotating shaft 35, the first elastic element 33 is compressed and deformed by the connecting bracket 32, the connecting bracket 32 and the third rotating shaft 36 simultaneously displace, the bolt 31 rotates along ω 3 and also translates along the direction P, when the bolt 31 moves to a certain position, the bolt 31 is finally separated from the lock column 12, and at this time, the first locking mechanism 3 completes unlocking.

And (3) locking process: as shown in fig. 14-15.

The people pushes the effort F9 that the sideslip door 5 produced to the rear of a vehicle direction and transmits to the spring bolt 31 of first locking mechanical system 3, make spring bolt 31 rotate upwards around third pivot 36, spring bolt 31 transmits power F9 for linking bridge 32 through third pivot 36, linking bridge 32 transmits power for first elastic element 33, because first elastic element 33 one end is spacing by second pivot 35, first elastic element 33 is tensile deformation by linking bridge 32 this moment, linking bridge 32 and third pivot 36 take place the displacement simultaneously, the translation is still done along direction Q when spring bolt 31 takes place to rotate, after spring bolt 31 moved a certain position, spring bolt 31 hooks lock post 12 and reaches the engaged state with lock post 12. At this time, the first lock mechanism 3 completes the locking.

The third rotating shaft 36 transmits force to the clamping plate 41, and drives the clamping plate 41 to rotate around the first connecting piece 43 in the direction of ω 4 under the acting force of the second elastic element 45 returning and contracting, at this time, the jaws 42 lose the support of the clamping plate 41, the jaws 42 rotate around the second connecting piece 44 in the direction of ω 5 under the acting force of the third elastic element 46 returning and contracting, at the same time, the wire 473 is pulled along with the rotation of the jaws 42, and finally, the jaws 42 stop moving due to the support of the clamping plate 41. At this time, the second locking mechanism 4 completes the locking.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The utility model provides a dual stop gear of car side sliding door, includes hasp (1) that comprises body (11) and lock post (12), its characterized in that: the device also comprises a base (2), a first locking mechanism (3) and a second locking mechanism (4); a longitudinal groove (21) is formed in the middle of the base (2), two side walls (22) are respectively arranged on two sides of the groove, the first locking mechanism (3) is arranged in the groove (21), and the second locking mechanism (4) is arranged on the side wall (22) on one side;

the first locking mechanism (3) comprises a bolt (31) arranged at one end of the base (2), a connecting support (32), a first elastic element (33) penetrating the connecting support (32), a first rotating shaft (34) and a second rotating shaft (35) which respectively movably connect one ends of the bolt (31) and the connecting support (32) to the two side walls (22), and a third rotating shaft (36) which movably connects the bolt (31) and the other end of the connecting support (32);

the second locking mechanism (4) comprises a clamping plate (41) arranged on the side face of the bolt (31), a clamping jaw (42) abutted against one end of the clamping plate (41), a first connecting piece (43) and a second connecting piece (44) which respectively connect the clamping plate (41) and the clamping jaw (42) with the base (2), a second elastic element (45) and a third elastic element (46) which are respectively used for resetting the clamping plate (41) and the clamping jaw (42), and a wire drawing assembly (47) penetrating through the clamping jaw (42) and the other end of the base (2); an open slot (411) is formed in one end of the clamping plate (41), and one end of the third rotating shaft (36) is located in the open slot (411), so that the first locking mechanism (3) and the second locking mechanism (4) form linkage;

the lock bolt is characterized in that one end of the lock bolt (31) is provided with a lock bolt groove (311) meshed with the lock cylinder (12), a first sliding groove (312) used for penetrating the first rotating shaft (34) is arranged in the middle of the lock bolt (31), and the other end of the lock bolt (31) is provided with a shaft hole (313) used for penetrating the third rotating shaft (36) and a third sliding groove (314) used for installing the connecting support (32).

2. The dual limit mechanism of an automotive side-slipping door of claim 1, wherein: a first bend (23), a second bend (24) and a third bend (25) are respectively arranged outwards on the side wall (22) on one side; one end of the clamping plate (41) is also provided with a fourth bend (412); one end of the clamping jaw (42) is provided with a fifth bend (421), and the other end of the clamping jaw (42) is provided with a sixth bend (422); two ends of the second elastic element (45) are respectively sleeved on the first bending part (23) and the fourth bending part (412); two ends of the third elastic element (46) are respectively sleeved on the third bend (25) and the sixth bend (422); one end of the stay wire assembly (47) penetrates through the fifth bend (421), the middle part of the stay wire assembly (47) is fixed on the second bend (24), and the other end of the stay wire assembly (47) is connected with the side sliding door (5).

3. The dual limit mechanism of an automotive side-slipping door of claim 2, wherein: the first bend (23) to the sixth bend (422) are perpendicular to the side wall (22), and the first bend (23) and the fourth bend (412), the second bend (24) and the fifth bend (421), and the third bend (25) and the sixth bend (422) are parallel to each other pairwise.

4. The dual limit mechanism of an automotive side-slipping door of claim 3, wherein: one end of the connecting support (32) is provided with a second sliding groove (321) used for penetrating the second rotating shaft (35), and the other end of the connecting support (32) is provided with a clamping groove (322) used for clamping the third rotating shaft (36).

5. The dual limit mechanism of an automobile side-slipping door of claim 4, wherein: the pull wire assembly (47) comprises a sleeve (471) with a hollow interior, a pull wire (473) arranged in the hollow cavity of the sleeve (471) in a penetrating mode, a ball head (474) fixedly connected with one end of the pull wire (473), and the other end of the pull wire (473) is connected with the door handle (51).

6. The dual limit mechanism of an automobile side-slipping door of claim 5, wherein: the axis of the wire (473) is parallel to the side wall (22).

7. The dual stop mechanism of an automobile side sliding door according to any one of claims 1-6, characterized in that: the unlocking force range of the first locking mechanism (3) is 115N-125N, and the unlocking force range of the second locking mechanism (4) is 65N-75N.