CN108657919B - Asynchronous door knife device with car door lock - Google Patents

Abstract

The invention provides an asynchronous door knife device with a car door lock, which comprises a door knife bottom plate, wherein a left door knife assembly, a right door knife assembly and a lock hook are arranged on the door knife bottom plate; the bottom plate of the door knife is provided with a third connecting rod. The right door knife arm moves with the latch hook, ensures that the latch hook can be reliably unlocked in the normal door opening and closing process, and independently and reliably resets to lock the hook plate when external force disappears, so that the structure is simpler, the transmission reliability is higher, and the space occupation and the cost are reduced.

Description

Asynchronous door knife device with car door lock

Technical Field

The invention relates to the technical field of elevator accessories, in particular to an asynchronous door knife device with a car door lock.

Background

In the prior art, a plurality of car door locks adopting asynchronous door knives are arranged independently of the door knives, and each landing door device is required to be provided with a collision bow, which obviously increases the difficulty and the failure rate of installation and debugging for the elevator with higher floors; the car door locks of other asynchronous door knives are integrated on the door knives, and although an additional device of a landing door device is omitted, as the lock hook is only arranged on one side of the active door knife arm, when the elevator stops in an unlocking area during failure, rescue workers cannot open the car door through landing balls from outside the hall, and trapped people cannot be quickly released. In order to solve the problems, a novel car door locking device based on an asynchronous door vane is provided.

Most of the existing technologies adopt structural members such as a shifting block or a shifting lever to drive a lock hook to rotate, an actuating mechanism is separated from an actuating mechanism, reliability is poor, and because the actuating mechanism is separated from the actuating mechanism, a spring and other lock hook reset elements are required to be arranged, so that the linkage structure is complex, occupies more structural space, and has higher cost.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention provides an asynchronous door vane device with a car door lock, which is used for solving at least one of the technical problems.

Specifically, the technical scheme is as follows:

the asynchronous door knife device with the car door lock comprises a door knife bottom plate, wherein a left door knife assembly, a right door knife assembly and a lock hook are arranged on the door knife bottom plate, the lock hook is hinged with the door knife bottom plate, the right door knife assembly comprises a right door knife arm, a first connecting rod and a second connecting rod, one ends of the first connecting rod and the second connecting rod are hinged with the door knife bottom plate, and the other ends of the first connecting rod and the second connecting rod are hinged with the right door knife arm;

the door knife comprises a door knife bottom plate, a left door knife component, a right door knife arm, a third connecting rod, a hook plate, a door knife door and a door knife, wherein the door knife bottom plate is provided with the third connecting rod, the right door knife arm is configured to move towards the direction close to the left door knife component under the action of external force, when the right door knife arm moves towards the direction far away from the left door knife component, the third connecting rod drives the hook to rotate above the hook plate on the door machine bottom plate and unlock with the hook plate, and when the external force disappears, the right door knife arm moves towards the direction close to the left door knife component and the hook rotates downwards to be locked with the hook plate under the action of gravity superposition of the third connecting rod and the right door knife arm.

In a preferred embodiment, one end of the third connecting rod is hinged to the middle of the right door knife arm, a first through hole is formed in the door knife bottom plate, a first hinge shaft is movably arranged in the first through hole in a penetrating mode, the other end of the third connecting rod is hinged to the lock hook through the first hinge shaft, and when the right door knife arm moves relative to the left door knife assembly, the lock hook is driven to rotate around the door knife bottom plate through the third connecting rod.

In a preferred embodiment, a fourth connecting rod is arranged on the door knife bottom plate, the middle part of the fourth connecting rod is hinged with the door knife bottom plate, one end of the fourth connecting rod is fixed with a rescue rope, when the rescue rope pulls the fourth connecting rod to rotate, the other end of the fourth connecting rod touches the first connecting rod, and the right door knife arm drives the lock hook to rotate above the hook plate and unlock the hook plate.

In a preferred embodiment, the door lock further comprises a return spring, wherein two ends of the return spring are respectively connected with the fourth connecting rod and the door knife bottom plate, and the return spring is used for returning the fourth connecting rod when external force acting on the unlocking rope disappears.

In a preferred embodiment, a rolling element is provided at one end of the fourth link contacting the first link, and contacts the first link via the rolling element.

In a preferred embodiment, a preset bending angle is formed between one end of the fourth connecting rod, on which the rescue rope is arranged, and one end of the fourth connecting rod, which touches the first connecting rod.

In a preferred embodiment, a first limiting member is provided on the door knife bottom plate for limiting the rotation range of the second connecting rod to one side of the left door knife assembly.

In a preferred embodiment, the edge of the bottom plate of the door knife, which is positioned at one side of the right door knife arm, is provided with a side plate, the fourth connecting rod and the side plate are respectively provided with a spring connecting column, and two ends of the return spring are respectively connected with one spring mounting column;

and one side of the side plate, which faces the right door knife arm, is provided with a plurality of second limiting parts used for limiting the amplitude of the right door knife arm when swinging to the right side.

In a preferred embodiment, the left door knife assembly comprises a left door knife arm, a second through hole is formed in the door knife bottom plate, the lock hook is hinged to the door knife bottom plate, an unlocking rod is arranged on the lock hook, and the unlocking rod penetrates through the second through hole;

when the left door knife arm is configured to touch the unlocking rod, the unlocking rod drives the lock hook to rotate above the hook plate and unlock with the hook plate, when the left door knife arm is separated from the unlocking rod, the lock hook is locked with the hook plate from above the hook plate under the action of gravity, the left door knife assembly further comprises a fifth connecting rod and a sixth connecting rod, one ends of the fifth connecting rod and the sixth connecting rod are hinged with the door knife bottom plate, and the other ends of the fifth connecting rod and the sixth connecting rod are hinged with the left door knife arm.

In a preferred embodiment, the latch hook is provided with a pin assembly, the pin assembly comprises a plurality of needles, and a connecting line of the tail end points of the needles passes through the rotation center of the latch hook.

The invention has at least the following beneficial effects:

the third connecting rod and the lock hook which are used for the right door knife arm form a connecting rod mechanism, the lock hook is driven by the right door knife arm to move, the movement is reliable, the mechanism is simple, and the lock hook can be reliably unlocked in the normal door opening and closing process. Moreover, the gravity superposition effect of the lock hook, the right door knife arm and the third connecting rod can be utilized, so that the lock hook can return independently and reliably to lock the hook plate when external force disappears. Compared with the structure parts such as the shifting block or the shifting rod and the like which drive the lock hook to rotate, the structure is simpler, the transmission reliability is higher, and the space occupation and the cost are reduced.

In order to make the above objects, features and advantages of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a front view of an asynchronous vane device with car door lock in an embodiment of the invention;

fig. 2 is a rear view of an asynchronous vane device with car door lock in an embodiment of the invention;

fig. 3 is an exploded view of an asynchronous vane device with car door lock in an embodiment of the invention.

Description of main reference numerals:

1-an asynchronous door knife device with a car door lock; 2-a door knife bottom plate; 3-left door knife arm; 4-right door knife arm; 5-a guide wheel; 6-curve plate; 7-locking hook; 8-hook plate; 9-a fifth connecting rod; 10-sixth connecting rod; 11-unlocking the rod; 12-a first link; 13-a second link; 14-a third link; 15-a first hinge shaft; 16-fourth link; 17-rolling elements; 18-a return spring; 19. 25-spring mounting posts; 20-rescue ropes; 21-a first limiting piece; 22-a second limiting piece; 23-a second through hole; 24-side plates; 25-pin assembly.

Detailed Description

Hereinafter, various embodiments of the present invention will be described more fully. The invention is capable of various embodiments and of modifications and variations therein. However, it should be understood that: there is no intention to limit the various embodiments of the invention to the specific embodiments disclosed herein, but rather the invention is to be understood to cover all modifications, equivalents, and/or alternatives falling within the spirit and scope of the various embodiments of the invention.

Hereinafter, the terms "comprises" or "comprising" as may be used in various embodiments of the present invention indicate the presence of the disclosed functions, operations or elements, and are not limiting of the addition of one or more functions, operations or elements. Furthermore, as used in various embodiments of the invention, the terms "comprises," "comprising," and their cognate terms are intended to refer to a particular feature, number, step, operation, element, component, or combination of the foregoing, and should not be interpreted as first excluding the existence of or increasing likelihood of one or more other features, numbers, steps, operations, elements, components, or combinations of the foregoing.

In various embodiments of the invention, the expression "or" at least one of a or/and B "includes any or all combinations of the words listed simultaneously. For example, the expression "a or B" or "at least one of a or/and B" may include a, may include B or may include both a and B.

Expressions (such as "first", "second", etc.) used in the various embodiments of the invention may modify various constituent elements in the various embodiments, but the respective constituent elements may not be limited. For example, the above description does not limit the order and/or importance of the elements. The above description is only intended to distinguish one element from another element. For example, the first user device and the second user device indicate different user devices, although both are user devices. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of various embodiments of the present invention.

It should be noted that: in the present invention, unless explicitly specified and defined otherwise, terms such as "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium; may be a communication between the interiors of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, it should be understood by those of ordinary skill in the art that the terms indicating an orientation or a positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of description, not to indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the invention.

The terminology used in the various embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the various embodiments of the invention. As used herein, the singular is intended to include the plural as well, unless the context clearly indicates otherwise. Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which various embodiments of the invention belong. The terms (such as those defined in commonly used dictionaries) will be interpreted as having a meaning that is the same as the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein in connection with the various embodiments of the invention.

Examples

The present embodiment provides an asynchronous vane device 1 with a car door lock, the asynchronous vane device 1 of the car door lock being installed in an elevator door system. As shown in fig. 1-3, the asynchronous door vane device 1 with the car door lock comprises a door vane bottom plate 2, wherein the door vane bottom plate 2 is fixed on a door vane hanging plate. The door knife bottom plate 2 is a main body structure of the asynchronous door knife device 1 with the car door lock, and the door knife bottom plate 2 can horizontally move relative to the door machine bottom plate. The door knife bottom plate 2 is provided with a left door knife component, a right door knife component and a lock hook 7.

In this embodiment, the left and right sides of the left and right door knife assemblies are left and right sides in the front view of the observer in the mounted state of the asynchronous door knife device 1 with the car door lock, as shown in fig. 1, in the view of the observer, the left door knife assembly is the left door knife assembly, and the right door knife assembly is the right door knife assembly. When the asynchronous door knife device 1 with the car door lock works, the left door knife component and the right door knife component are matched to lock and unlock the landing door ball.

The latch hook 7 is matched with a hook plate 8 fixed on a bottom plate of the door machine and used for locking and unlocking the hook plate 8. As shown in fig. 1 and 2, the latch hook 7 is disposed above the hook plate 8, and locks the hook plate 8 when the latch hook 7 rotates downward, and unlocks the hook plate 8 when the latch hook 7 rotates upward.

In this embodiment, the right vane assembly includes a right vane arm 4, a first link 12 and a second link 13. Wherein, first connecting rod 12 is located the below of second connecting rod 13, and the one end of first connecting rod 12 and second connecting rod 13 articulates with door knife bottom plate 2, and the other end of first connecting rod 12 and second connecting rod 13 articulates with right door knife arm 4, and from this, door knife bottom plate 2, first connecting rod 12, right door knife arm 4 and second connecting rod 13 constitute four-bar linkage.

Preferably, the distance between the two hinge shafts on the first connecting rod 12 is the same as the distance between the two hinge shafts on the second connecting rod 13, so that a four-bar mechanism consisting of the door knife bottom plate 2, the first connecting rod 12, the right door knife arm 4 and the second connecting rod 13 is of a parallelogram structure, the upper end and the lower end of the right door knife arm 4 can move at the same speed, the door knife bottom plate 2 is prevented from being inclined, and the clamping stability is improved.

In this embodiment, the third link 14 is provided on the door vane base plate 2. One end of the third connecting rod 14 is hinged with the middle part of the right door knife arm 4, a first through hole (not shown in the figure) is formed in the door knife bottom plate 2, and a first hinge shaft 15 is movably arranged in the first through hole in a penetrating manner, namely, the width dimension of the first through hole is larger than the diameter of the first hinge shaft 15 or the width of the matching surface, so that a gap is formed between the first hinge shaft and the first hinge shaft, and the first hinge shaft 15 can move up and down and left and right in the first through hole. The other end of the third connecting rod 14 is rotatably sleeved on the first hinging shaft 15, the first hinging shaft 15 is sleeved on the lock hook 7, therefore, a crank-connecting rod mechanism is formed among the right door knife arm 4, the third connecting rod 14 and the lock hook 7, when the right door knife arm 4 moves, power is transmitted to the third connecting rod 14, and the third connecting rod 14 drives the lock hook 7 to rotate around the door knife bottom plate 2.

Under normal unlocking action, when the right door knife arm 4 is configured to swing after touching the landing door ball, the lock hook 7 is driven to rotate above the hook plate 8 to unlock with the hook plate 8, and when the right door knife arm 4 is separated from the landing door ball, the lock hook 7 is locked with the hook plate 8 from above the hook plate 8 under the superposition of self gravity and the gravity of the right door knife arm 4 and the third connecting rod 14.

For example, in the projection view of fig. 2, the first hinge shaft 15 is located below the hinge shaft between the latch hook 7 and the vane base plate 2, and when the right vane arm 4 moves away from the left vane arm 3, i.e., in fig. 2, the first hinge shaft 15 moves leftward, causing the latch hook 7 to rotate clockwise, when the latch hook 7 releases the hook plate 8 from above the hook plate 8, i.e., the car door lock is unlocked. In fig. 2, when the right door knife arm 4 is separated from the landing door ball, the latch hook 7 rotates counterclockwise under the superposition of the gravity of the right door knife arm 4 and the gravity of the third connecting rod 14, and is locked with the hook plate 8 from above the hook plate 8.

Preferably, a fourth connecting rod 16 is arranged on the door knife bottom plate 2, the middle part of the fourth connecting rod 16 is hinged with the door knife bottom plate 2, one end of the fourth connecting rod 16 is fixed with a rescue rope 20, when the other end of the fourth connecting rod 16 is configured to pull the fourth connecting rod 16 to rotate by the rescue rope 20, after the other end of the fourth connecting rod 16 touches the first connecting rod 12, the right door knife arm 4 drives the lock hook 7 to rotate above the hook plate 8 to unlock with the hook plate 8. Specifically, the fourth link 16 is a bending member, and a preset bending angle, for example, an obtuse angle, is formed between an end of the fourth link 16, where the rescue rope 20 is disposed, and an end of the fourth link 16, where the first link 12 is touched, so that the end of the fourth link 16, where the rescue rope 20 is disposed, is horizontally disposed, and an end of the fourth link 12, where the first link 12 is touched, is obliquely disposed, so that the first link 12 is skillfully touched, and in the view angles of fig. 1 and 3, the first link 12 is driven to rotate clockwise, so that the right door knife arm 4 moves in a direction away from the left door knife arm 3, so as to drive the latch hook 7 to release the hook plate 8.

Preferably, the door knife also comprises a return spring 18, and two ends of the return spring 18 are respectively connected with the fourth connecting rod 16 and the door knife bottom plate 2. Specifically, each of the side plate 24 and the fourth link 16 is provided with a spring mounting post 19, 25, such as a stud, and both ends of the return spring 18 are connected to the two spring mounting posts 19, 25, respectively. Due to the arrangement of the return spring 18, when the external force acting on the unlocking rope is removed, the fourth link 16 is returned under the action of the elastic force of the return spring 18.

Preferably, the end of the fourth link 16 touching the first link 12 is provided with a rolling body 17, and touches the first link 12 through the rolling body 17. As a preferred rolling element 17, it is a rolling bearing, the fourth connecting rod 16 having a correspondingly mounted shaft, the inner ring of the rolling bearing being arranged outside the mounted shaft, the rolling bearing being used for contacting the first connecting rod 12. Therefore, when the rolling body 17 touches the first connecting rod 12 and drives the rolling body 17 to rotate around the door vane bottom plate 2, the rolling body 17 rotates, so that the friction force between the rolling body and the first connecting rod 12 is greatly reduced, the premature damage of the surface of a part is prevented, the noise is reduced, and the asynchronous door vane device 1 with the car door lock operates more quietly and stably.

As shown in fig. 1-3, the left cutter arm assembly can be unlocked by adopting a separated type deflector rod when the hall ball touches the left cutter arm (namely, under the condition of rescue outside the hall in a flat area). Specifically, the left gate knife assembly comprises a left gate knife arm 3, and in operation, the left gate knife arm 3 can move to achieve actions of clamping and unlocking the landing gate ball. Specifically, the asynchronous door knife device 1 with the car door lock further comprises a curve plate 6 on a bottom plate of the door machine, the end part of the left door knife arm 3 is provided with a guide wheel 5, and the guide wheel 5 is contacted with the curved surface of the curve plate 6 and can roll on the curved surface. Further preferably, the left door knife assembly further comprises a fifth link 9 and a sixth link 10, wherein the fifth link 9 is located below and the sixth link 10 is located above. One ends of the fifth connecting rod 9 and the sixth connecting rod 10 are hinged with the door knife bottom plate 2, and the other ends of the fifth connecting rod 9 and the sixth connecting rod 10 are hinged with the left door knife arm 3, so that the door knife bottom plate 2, the fifth connecting rod 9, the left door knife arm 3 and the sixth connecting rod 10 form a four-bar mechanism.

Preferably, the distance between the two hinge shafts on the fifth connecting rod 9 is the same as the distance between the two hinge shafts on the sixth connecting rod 10, so that a four-bar mechanism consisting of the door knife bottom plate 2, the fifth connecting rod 9, the left door knife arm 3 and the sixth connecting rod 10 is of a parallelogram structure, and further the upper end and the lower end of the left door knife arm 3 can move at the same speed, so that the door knife bottom plate 2 is prevented from being inclined, and the clamping stability is improved.

As shown in fig. 1-2, the door knife bottom plate 2 is provided with a second through hole 23, the lock hook 7 is provided with an unlocking rod 11, the unlocking rod 11 passes through the second through hole 23, and the unlocking rod 11 is positioned above the hinge shaft between the lock hook 7 and the door knife bottom plate 2. When the left door knife arm 3 is configured to touch the unlocking rod 11, the unlocking rod 11 drives the lock hook 7 to rotate above the hook plate 8 to unlock the hook plate 8, and when the left door knife arm 3 is separated from the unlocking rod 11, the lock hook 7 is locked with the hook plate 8 from above the hook plate 8 under the action of gravity. Specifically, the size of the gap of the second through hole 23 is larger than the size of the unlocking rod 11 penetrating through the second through hole, so that when the left door knife arm 3 touches the unlocking rod 11, the unlocking rod 11 can be driven to move up and down and left and right in the second through hole 23. Since the unlocking lever 11 is disposed on the latch hook 7, the unlocking lever 11 moves in the second through hole 23 to drive the latch hook 7 to rotate. In the projection view of fig. 1, the second through hole 23 is located at the left side of the left door knife arm 3, when the left door knife arm 3 is configured to touch the unlocking lever 11, the unlocking lever 11 moves leftwards, at this time, in the projection view of fig. 2, the unlocking lever 11 drives the latch hook 7 to rotate clockwise, and at this time, the latch hook 7 rotates above the hook plate 8 to unlock with the hook plate 8.

As a preferable latch hook 7, the front side is a hook body, the rear side is a connection part, and the third connecting rod 14 is arranged in the middle of the connection part in a penetrating way, so that the latch hook 7 can be driven to rotate around the door knife bottom plate 2 when the third connecting rod 14 swings due to the fact that the hinge shaft between the third connecting rod 14 and the latch hook 7 and the door knife bottom plate 2 is not concentric. Preferably, the rear side of the latch hook 7 has at least two protruding corners protruding from the middle of the rear side connection part, and the latch release lever 11 and the first hinge shaft 15 are respectively provided at one of the protruding corners, which saves material compared to the prior art.

Preferably, the door knife bottom plate 2 is provided with a first limiting piece 21 on the left side of the first connecting rod 12. As a preferred first stopper 21, it includes a connecting column and an elastic body. The connecting column is vertically arranged on the surface of the door knife bottom plate 2, the elastic body is connected to the end part of the connecting column, and the elastic body is matched with the first connecting rod 12 to limit the rotation amplitude of the connecting column. Compared with the traditional limiting structure, the first limiting piece 21 in the embodiment reduces the touch damage probability between the first limiting piece 21 and the first connecting rod 12, and eliminates the noise generated when the first limiting piece 21 and the first connecting rod 12 touch, so that the asynchronous door vane device 1 with the car door lock operates more quietly and stably.

Preferably, the edge of the bottom door leaf 2 on the side of the right door leaf arm 4 has a side plate 24, the side plate 24 being located on the right side of the bottom door leaf 2 in the projection view of fig. 1, 3. The left side of the side plate 24 is provided with a plurality of second stoppers 22 for restricting the amplitude of the right vane arm 4 when swinging to the right. As a preferred second spacing element 22, two in number, comprising a connecting post and an elastomer. The connecting posts are vertically arranged on the surface of the side plate 24, and an elastic body is connected to the end of the connecting posts and is matched with the right door knife arm 4 to limit the movement range of the right door knife arm. Compared with the traditional limiting structure, the second limiting piece 22 in the embodiment reduces the touch damage probability between the second limiting piece 22 and the right door vane arm 4, and eliminates the noise generated when the second limiting piece 22 and the right door vane arm touch, so that the asynchronous door vane device 1 with the car door lock operates more quietly and stably.

Preferably, the latch hook 7 is provided with a pin assembly 25, and the pin assembly 25 comprises a plurality of needles, for example two needles, the line of the end points of each needle passing through the rotation center of the latch hook. Because the line of the terminal point of each syringe needle passes through the center of revolution of latch hook, the terminal point of each syringe needle can with latch hook 7 coaxial rotation, under the circumstances that the socket in the switch main part extends horizontally, latch hook 7 rotary motion and horizontal migration both cases can normal insert or break away from the switch main part, prevent the contact pin and with the collision in socket area, protect the contact pin structure, realize reliably that latch hook 7 rotary motion and horizontal migration are under the electrical verification of both cases.

The embodiment has at least the following advantages:

in this embodiment, the third connecting rod 14 through which the right door knife arm 4 passes forms a connecting rod mechanism with the lock hook 7, when the right door knife arm 4 acts, the lock hook 7 follows up, the action is reliable, the mechanism is simple, and the lock hook 7 can be reliably unlocked in the normal door opening and closing process. Further, by utilizing the gravity superposition action of the lock hook 7, the right door knife arm 4 and the third connecting rod 14, the lock hook 7 can return to the original position independently and reliably to lock the hook plate 8 when the external force disappears. Compared with the structure parts such as the shifting block or the shifting rod and the like which drive the lock hook 7 to rotate, the reset element of the lock hook 7 is omitted, the structure is simpler, the transmission reliability is higher, and the space occupation and the cost are reduced.

The foregoing disclosure is merely illustrative of some embodiments of the invention, and the invention is not limited thereto, as modifications may be made by those skilled in the art without departing from the scope of the invention.

Claims (6)

1. The asynchronous door knife device with the car door lock comprises a door knife bottom plate, wherein a left door knife assembly, a right door knife assembly and a lock hook are arranged on the door knife bottom plate, and the lock hook is hinged with the door knife bottom plate;

the door knife bottom plate is provided with a third connecting rod, the right door knife arm is configured to drive the lock hook to rotate above a hook plate on the door machine bottom plate and unlock with the hook plate under the action of external force when moving towards a direction away from the left door knife assembly, and the right door knife arm moves towards a direction close to the left door knife assembly and the lock hook rotates downwards to lock with the hook plate under the action of gravity superposition of the lock hook, the third connecting rod and the right door knife arm when the external force disappears;

the door knife bottom plate is provided with a first limiting piece which is used for limiting the rotation amplitude of the second connecting rod to one side of the left door knife assembly;

the door knife bottom plate is provided with a fourth connecting rod, the middle part of the fourth connecting rod is hinged with the door knife bottom plate, one end of the fourth connecting rod is fixedly provided with a rescue rope, and when the rescue rope pulls the fourth connecting rod to rotate, the other end of the fourth connecting rod touches the first connecting rod, and then the right door knife arm drives the lock hook to rotate above the hook plate and unlock the hook plate;

the device also comprises a reset spring, wherein two ends of the reset spring are respectively connected with the fourth connecting rod and the door knife bottom plate and are used for resetting the fourth connecting rod when external force acting on the rescue rope disappears;

the edge of the bottom plate of the door knife, which is positioned at one side of the right door knife arm, is provided with a side plate, the fourth connecting rod and the side plate are respectively provided with a spring connecting column, and two ends of the reset spring are respectively connected with one spring connecting column;

and one side of the side plate, which faces the right door knife arm, is provided with a plurality of second limiting parts used for limiting the amplitude of the right door knife arm when swinging to the right side.

2. The asynchronous door knife device with the car door lock according to claim 1, wherein one end of the third connecting rod is hinged with the middle part of the right door knife arm, a first through hole is formed in the door knife bottom plate, a first hinge shaft is movably arranged in the first through hole in a penetrating mode, the other end of the third connecting rod is hinged with the lock hook through the first hinge shaft, and when the right door knife arm moves relative to the left door knife assembly, the lock hook is driven to rotate around the door knife bottom plate through the third connecting rod.

3. The asynchronous door vane device with a car door lock according to claim 1, wherein one end of the fourth link touching the first link is provided with a rolling body, and touches the first link through the rolling body.

4. The asynchronous door vane device with a car door lock according to claim 1, wherein a preset bending angle is formed between one end of the fourth link, at which the rescue rope is arranged, and one end of the fourth link, which touches the first link.

5. The asynchronous door vane device with a car door lock according to claim 1, wherein the left door vane assembly comprises a left door vane arm, a second through hole is formed in the door vane base plate, the lock hook is hinged to the door vane base plate, an unlocking rod is arranged on the lock hook, and the unlocking rod penetrates through the second through hole;

when the left door knife arm is configured to touch the unlocking rod, the unlocking rod drives the lock hook to rotate above the hook plate and unlock with the hook plate, when the left door knife arm is separated from the unlocking rod, the lock hook is locked with the hook plate from above the hook plate under the action of gravity, the left door knife assembly further comprises a fifth connecting rod and a sixth connecting rod, one ends of the fifth connecting rod and the sixth connecting rod are hinged with the door knife bottom plate, and the other ends of the fifth connecting rod and the sixth connecting rod are hinged with the left door knife arm.

6. The asynchronous door vane device with car door lock according to claim 1, wherein the latch hook is provided with a pin assembly, the pin assembly comprises a plurality of needles, and a connection line of the end points of each needle passes through a rotation center of the latch hook.