CN112551328A

CN112551328A - Single-knife movable asynchronous door knife device

Info

Publication number: CN112551328A
Application number: CN202011386277.4A
Authority: CN
Inventors: 吕威; 张东阳; 徐洪申
Original assignee: Ningbo Shenling Electromechanical Technology Co ltd
Current assignee: Ningbo Shenling Electromechanical Technology Co ltd
Priority date: 2020-12-01
Filing date: 2020-12-01
Publication date: 2021-03-26

Abstract

The invention discloses a single-knife movable asynchronous door knife device, which is used for a car door machine. Asynchronous door sword device includes: the door knife rest assembly comprises a door knife bottom plate and a limiting frame, wherein the door knife bottom plate comprises a transmission hole. The rocker component is rotatably connected to the door vane bottom plate. Sedan-chair door latch hook subassembly, including latch hook board, latch hook body and first reset subassembly, the latch hook board includes the drive groove, the latch hook body when the sedan-chair door is closed the door and is in place the butt in spacing. And the cutter arm hinge assembly comprises a left cutter arm assembly, a right cutter arm and a transmission shaft, and the transmission shaft penetrates through the transmission hole and is in plug-in connection with the driving groove. When the car door is opened, the rocker assembly rotates relative to the door knife bottom plate, the latch plate rotates relative to the rocker assembly, and the left knife arm assembly rotates towards the right knife arm to approach; when the distance between the left knife arm component and the right knife arm is at the minimum clamping position, the lock hook body rotates to be far away from the limiting frame.

Description

Single-knife movable asynchronous door knife device

Technical Field

The invention relates to the technical field of elevators, in particular to a single-knife movable asynchronous door knife device.

Background

The single-knife movable asynchronous door knife device is arranged on a car door machine and moves along with the car door to be used for clamping a door ball component on the landing door device so as to open the landing door device. The asynchronous door vane has the characteristic of firstly opening the door and then unlocking, so that the problem that the door cannot be opened due to the fact that a car door lock hook of the single-vane movable asynchronous door vane device is locked with a fixed hook of a car door easily occurs in the door opening process; when the door of the door machine is closed in place, the locking hook of the single-knife movable asynchronous door knife device easily collides with the fixed hook of the car door, so that the problems of abnormal sound and the like caused by closing the door are solved; in order to solve the problems, a method of linking a left door knife arm and a right door knife arm by imitating a synchronous door knife principle is developed in the market so as to hopefully and quickly realize the clamping of a door ball and the opening of a landing door and a car door lock; however, in practice, the problem that the door knife cannot clamp the door lock ball, the door is opened first until the door is opened in place, and then the ball is clamped frequently occurs; or a forced knife retracting device is adopted, so that the problem that the door is difficult to open outside the hall occurs; improvements are therefore needed.

Disclosure of Invention

The invention aims to provide a single-knife movable asynchronous door knife device.

The technical scheme adopted by the invention is as follows: a single-knife movable asynchronous door knife device is used for a car door machine, and the door machine comprises an in-place baffle; the movable asynchronous door sword device of single sword includes:

the door knife rest assembly comprises a door knife bottom plate and a limiting frame arranged on the door knife bottom plate, and the door knife bottom plate comprises a transmission hole which penetrates through the door knife bottom plate;

the rocker component is rotatably connected to the door vane bottom plate and abuts against the in-place baffle when the car door is closed in place;

the car door lock hook assembly comprises a lock hook plate rotatably connected to the rocker assembly, a lock hook body fixedly arranged on the lock hook plate and a first reset assembly capable of rotating on the lock hook plate, the first reset assembly is elastically connected to the door vane bottom plate, the limiting frame is positioned on a rotating path of the lock hook body and is arranged at intervals with the first reset assembly, and the lock hook plate comprises a driving groove; the lock hook body abuts against the limiting frame under the action of elastic pretightening force of the first reset component when the car door is closed in place;

the knife arm hinge assembly comprises a left knife arm assembly which is rotatably connected to the door knife bottom plate, a right knife arm which is fixed to the door knife bottom plate and a transmission shaft which is fixedly connected to the left knife arm assembly, and the transmission shaft penetrates through the transmission hole and is in plug-in connection with the driving groove;

when the car door is opened, the rocker component rotates relative to the door knife bottom plate, the lock hook plate rotates relative to the rocker component, the lock hook body abuts against the limiting frame under the action of elastic pretightening force of the first reset component and moves away from the car door in the opening direction, and the left knife arm component rotates towards the right knife arm direction and approaches to the car door; when the distance between the left knife arm component and the right knife arm is at the minimum clamping position, the lock hook body rotates to be far away from the limiting frame.

In one embodiment, the rocker assembly comprises a rocker frame, a first rotating member and a second resetting member, the first rotating member is mounted on the rocker frame and is located between the second resetting member and the limiting frame, the rocker frame is rotatably connected with the door knife base plate through the first rotating member, and the second resetting member is elastically connected with the door knife base plate to drive the rocker frame to rotate.

In one embodiment, the rocker frame comprises a first limiting hole in an arc long hole shape, an arc center line of the first limiting hole is coaxial with an axis of the first rotating member, the door knife rest assembly comprises a first limiting shaft mounted on the door knife base plate, and the first limiting shaft is inserted into the first limiting hole.

In an embodiment, the rocker assembly further includes a second rotating member mounted on the rocker frame, the rocker frame further includes a second limiting hole in an arc-shaped long hole shape, an arc center line of the second limiting hole coincides with an axis of the second rotating member, the second reset assembly is located between the first limiting hole and the second limiting hole, the car door lock hook assembly includes a second limiting shaft mounted on the lock hook plate, the lock hook plate is rotatably connected to the second rotating member, and the second limiting shaft is connected to the second limiting hole in an inserting manner.

In one embodiment, the rocker assembly comprises a pushing frame mounted on the rocker frame, the first rotating member is located between the pushing frame and the second resetting assembly, the pushing frame abuts against the in-place baffle and drives the rocker frame to rotate when the car door is closed in place, and the second resetting assembly compresses and pre-tightens.

In one embodiment, the driving slot is a long hole, the driving slot includes two opposite and parallel side walls, and the transmission shaft is tangent to the side walls.

In one embodiment, the locking hook body includes a leg portion and a barb portion protruding from the leg portion, and the leg portion extends in a direction perpendicular to a side wall of the driving groove.

In one embodiment, the single-blade movable asynchronous door knife device further comprises a return limiting assembly rotatably connected to the door knife bottom plate, and the return limiting assembly is slidably connected to the rocker assembly; when the knife arm hinge assembly is located at the clamping position, the return limiting assembly pushes the rocker assembly to abut against the door knife bottom plate.

In an embodiment, the return limiting component comprises a limiting plate, a locking member and an unlocking member, the limiting plate comprises a hinged portion, a first support arm and a second support arm, the first support arm is crossed to the hinged portion, the second support arm is crossed to the second support arm, the second support arm is inclined relative to the first support arm, the hinged portion is rotatably connected to the door knife bottom plate, the locking member is installed on the first support arm and is in sliding connection with the rocker component, and the unlocking member is installed on the second support arm and faces away from the rocker component and extends in the direction.

In an embodiment, the left knife arm assembly comprises a left knife arm, an upper swing arm and a lower swing arm which are hinged to the left knife arm, the upper swing arm and the lower swing arm are hinged to the door knife base plate, and the transmission shaft is fixedly connected to the upper swing arm and located between the left knife arm and the door knife base plate.

After adopting the structure, compared with the prior art, the invention has the advantages that: the latch hook plate is rotatably connected to the rocker assembly, so that the latch hook body abuts against the limiting frame at the initial stage of door opening and moves along the direction deviating from the door opening direction, the spacing between the latch hook body and the fixed hook on the car door is basically kept stable, and the problem of locking caused by reduction of the spacing between the latch hook body and the fixed hook is avoided. Similarly, the lock hook body rotates and abuts against the limiting frame when the lock hook plate rotates to the door closing position relative to the rocker assembly so as to lock the fixed hook and avoid impacting the fixed hook; and because the right knife arm is fixedly connected with the door knife bottom plate, the left knife arm component is driven by the transmission shaft to rotate relative to the right knife arm to be close to the clamping position or keep away from the unfolding position, and the left knife arm component independently acts, so that the problems that the door knife for opening the door of the door machine does not retract a knife clamping ball and the door cannot be opened when the door is taken off from the hall can be avoided.

Drawings

The invention is further illustrated with reference to the following figures and examples:

fig. 1 is a schematic perspective view of a single-blade movable asynchronous door knife device according to the present invention.

Fig. 2 is a schematic structural view of a car door lock hook assembly in a locked position in the single-blade movable asynchronous door knife device of the invention.

Fig. 3 is a schematic structural view of a car door lock hook assembly in an unlocking position in the single-knife movable asynchronous door knife device.

Fig. 4 is a schematic structural view of the door frame assembly of the present invention.

FIG. 5 is a schematic view of the rocker assembly of the present invention.

Figure 6 is a schematic structural view of the door latch hook assembly of the present invention.

Fig. 7 is a front structural schematic view of the single-blade movable asynchronous door knife device of the invention.

Fig. 8 is a schematic view of the knife arm hinge assembly of the present invention gripping a gate ball.

Fig. 9 is a schematic structural view of the left blade arm assembly of the present invention.

In the figure: a door frame assembly 10; a limiting frame 11; a door vane bottom plate 12; a drive hole 121; a first stopper shaft 13; a carriage 14; mounting a shaft 15; a third stopper shaft 16; a rocker assembly 20; a rocker frame 21; a first stopper hole 211; a second limiting hole 212; a limit groove 213; a first rotating member 22; a second rotating member 23; a push frame 24; a second reduction member 25; a door latch hook assembly 30; a latch plate 31; a drive slot 311; a first reduction assembly 32; a reset lever 321; a return spring 322; a latch hook body 33; the arm support portions 331; a barb 332; a second stopper shaft 34; an insertion needle plate 35; the slide groove 351; a knife arm hinge assembly 40; a transmission shaft 41; a right blade arm 42; left knife arm assembly 43; a left knife arm 431; an upper swing link 432; a lower swing link 433; a return limit assembly 50; a position restricting plate 51; the first arm 511; a second support arm 512; a hinge 513; a locking member 52; an unlocking member 53; a position stop 60.

Detailed Description

The following description is only a preferred embodiment of the present invention, and does not limit the scope of the present invention.

In the embodiment, as shown in fig. 1 to 4, the single-blade movable asynchronous door vane device is used for clamping or releasing a door ball device and other operation modes to drive a car door device and a landing door device of an elevator to open or close, wherein the car door device comprises a car door machine, and an in-place baffle 60 and a fixed hook which are arranged on the car door machine. The single-blade movable asynchronous door vane device comprises a door vane frame assembly 10, a rocker assembly 20, a car door lock hook assembly 30, a vane arm hinge assembly 40 and a return limiting assembly 50. The door knife rest assembly 10 comprises a door knife bottom plate 12 and a limiting frame 11 installed on the door knife bottom plate 12, and the door knife bottom plate 12 comprises a transmission hole 121 which penetrates through the transmission hole. The limiting frame 11 is mounted on the door vane bottom plate 12 and protrudes from the surface of the door vane bottom plate 12 to form a fixed projection or a rotating member that moves relative to the door vane bottom plate 12.

The rocker assembly 20 is rotatably connected to the vane bottom plate 12, the rocker assembly 20 abuts against the in-place baffle 60 through the pushing member 24 riveted to the rocker assembly before the car door is closed in place, and under the driving of a continuous door closing action force, a reaction force of the in-place baffle 60 is applied to the pushing member 24, and drives the rocker assembly 20 to rotate counterclockwise (as viewed from fig. 7) until one end of the first limiting hole 211 is limited and stopped by the first limiting shaft 13; the spring of the second reset assembly 25 of the rocker assembly 20 is compressed during this process to charge the energy. The second reset component 25 is fixed on the end sliding frame 14 and fixed on the door vane bottom plate 12.

As shown in fig. 1 and 6, the car door latch hook assembly 30 includes a latch hook plate 31 rotatably connected to the rocker assembly 20, a latch hook body 33 fixedly disposed on the latch hook plate 31, and a first restoring member 32 rotatably disposed on the latch hook plate 31, wherein the latch hook body 33 is cantilevered outward from the latch hook plate 31. Alternatively, the locking hook body 33 and the locking hook plate 31 are integrally formed, or the locking hook body 33 and the locking hook plate 31 are detachably connected, and the relative positions of the two are fixed. Optionally, the latch hook 33 includes a branch arm 331 and a barb 332 protruding from the branch arm 331, and the barb 332 is used for engaging with the fixed hook to lock the car door.

The first reset component 32 is elastically connected to the door vane bottom plate 12, wherein an elastic acting force of the first reset component 32 acts on the latch plate 31, so that the latch plate 31 has an elastic pre-tightening force rotating towards the direction of the limiting frame 11, and the limiting frame 11 is located on a rotating path of the latch body 33 and is spaced from the first reset component 32, so as to limit a rotating position of the latch body 33 of the latch plate 31. The latch body 33 abuts against the limiting frame 11 under the action of the elastic pre-tightening force of the first resetting component 32 when the car door is closed to the proper position.

Knife arm hinge assemblies 40 are attached to door vane base plate 12 and are disposed opposite to door latch hook assembly 30, i.e., knife arm hinge assemblies 40 and door latch hook assembly 30 are disposed on opposite side surfaces of door vane base plate 12. The knife arm hinge assembly 40 includes a left knife arm assembly 43 rotatably connected to the door knife base plate 12, a right knife arm 42 fixed to the door knife base plate 12, and a transmission shaft fixedly connected to the left knife arm assembly 43, the latch plate 31 includes a driving groove 311, and the transmission shaft 41 passes through the transmission hole 121 on the door knife base plate 12 and is in plug-in connection with the driving groove 311. The knife arm hinge assembly 40 and the latch plate 31 are in power transmission through a transmission shaft 41, optionally, the driving slot 311 is a long hole, the driving slot 311 includes two opposite and parallel side walls, and the transmission shaft 41 is tangent to the side walls.

When the car door is opened, the rocker assembly 20 is driven by the spring force of the second reset assembly 25 to rotate relative to the door vane bottom plate 12, the latch plate 31 rotates relative to the rocker assembly 20, the latch body 33 abuts against the limiting frame 11 under the action of the elastic pretightening force of the first reset assembly 32 and moves away from the car door opening direction, and the left knife arm assembly 43 rotates towards the right knife arm 42 and approaches; when the distance between the left knife arm assembly 43 and the right knife is at the minimum clamping position, the locking hook body rotates away from the limiting frame 11. The knife arm hinge assembly 40 is located at the clamping position, which is the position when the left knife arm assembly 43 approaches the right knife arm 42 fixed on the door knife base plate 12 and clamps the gate ball of the landing door device. Alternatively, the extending direction of the arm portion 331 is perpendicular to the side wall of the driving slot 311, so that the arm portion 331 can move along the limiting frame 11 approximately in a straight line during the rotation of the driving shaft 41 driving the latch plate 31, and the moving amount of the arm portion 331 is substantially the same as the opening amount of the car door. For example, the linear sliding distance of the latch plate 31 with respect to the stopper 11 is 8mm to 16mm so that the latch body 33 is not locked to the hook at the initial stage of opening the car door. Specifically, the linear sliding distance of the latch plate 31 in cooperation with the limiting frame 11 is 8mm, 10mm, 12mm, 15mm, 16mm, or the like.

When the car door is closed to the proper position, the rocker assembly 20 abuts against the proper position stop plate 60 and rotates to the limit position relative to the door knife rest assembly 10, the latch plate 31 rotates towards the limit frame 11 under the action of the rotational driving force of the rocker assembly 20 and the elastic force of the first reset assembly 32, and the left knife arm assembly 43 rotates relative to the right knife arm 42 and is far away from the right knife arm 42, so that after the distance between the left knife arm assembly 43 and the right knife arm 42 is increased, the latch plate 31 rotates to abut against the limit frame 11. The knife arm hinge assembly 40 opens to release the gate ball of the landing door assembly to allow the car door to move. The first reset component 32 includes a reset rod 321 and a reset spring 322 sleeved on the reset rod 321, wherein one end of the reset rod 321 is rotatably connected to the latch plate 31, the other end of the reset rod is connected to the carriage 14 of the door vane base plate 12 in an inserting manner, and the reset spring 322 abuts against the carriage 14, so that the latch plate 31 rotates towards a direction away from the carriage 14 under the driving of the elastic pre-tightening force of the first reset component 32.

The latch plate 31 is rotatably connected to the rocker assembly 20, so that the latch body 33 abuts against the limiting frame 11 at the initial stage of opening the door and moves along the direction departing from the opening direction, the spacing between the latch body 33 and the fixed hook on the car door is basically kept stable, and the problem of locking caused by the reduction of the spacing between the latch body 33 and the fixed hook is avoided. Similarly, the latch body 33 is rotatably abutted to the stopper 11 when the latch plate 31 is rotated to the closed position relative to the rocker assembly 20 to lock the latch hook and prevent the latch hook from being impacted.

As shown in fig. 1 and 5, in an embodiment, the rocker assembly 20 includes a rocker frame 21, a first rotating member 22 mounted on the rocker frame 21, and a second returning member 25, the first rotating member 22 is located between the second returning member 25 and the limiting frame 11, the rocker frame 21 is rotatably connected to the door vane base plate 12 through the first rotating member 22, and the second returning member 25 is elastically connected to the door vane base plate 12 to drive the rocker frame to rotate.

The first rotating member 22 is used to connect the rocker frame 21 and the door vane base plate 12 so that the rocker frame 21 can rotate relative to the door vane base plate 12. Alternatively, the first rotating member 22 is provided as a bearing mounted to the rocker frame 21 or a circular hole opened in the rocker frame 21, the door vane assembly 10 includes a mounting shaft 15 mounted to the door vane base plate 12, and the mounting shaft 15 is connected to the first rotating member 22. The first reset assembly 32 and the second reset assembly 25 are similar in structure, and the first reset assembly 32 and the second reset assembly 25 are arranged at intervals and are respectively located on two sides of the rocker frame 21. Optionally, the telescoping direction of the first reduction assembly 32 and the telescoping direction of the second reduction assembly 25 are perpendicular to each other.

The latch plate 31 is rotatably connected to the rocker frame 21, and the first rotating member 22 is located in an area between the rotatably connected portion of the latch plate 31 and the rocker frame 21 and the second returning member 25, so that the rotating direction of the latch plate 31 is adapted to the rotating direction of the rocker frame 21 driven by the second returning member 25, and the rotating flexibility is high.

To further limit the range and angle of rotation of the rocker frame 21 relative to the door vane base plate 12, the rotational position is maintained consistent. In an embodiment, the rocker arm frame 21 includes a first limiting hole 211 in an arc-shaped long hole shape, and an arc-shaped center line of the first limiting hole 211 is coaxial with an axis of the first rotating member 22. The door knife rest assembly 10 comprises a first limiting shaft 13 mounted on the door knife bottom plate 12, and the first limiting shaft 13 is inserted into the first limiting hole 211. The first limit shaft 13 is used for limiting the rotation range and the rotation angle of the rocker frame 21, wherein the first limit shaft 13 is tangent to the hole wall of the first limit hole 211 to support and stabilize the rotation stability of the rocker frame 21. Further, first spacing axle 13 includes first axis body and the rotor of locating first axis body in the cover, and the rotor is tangent with the pore wall of first spacing hole 211 to improve pivoted flexibility. The rotating body is a rotating body such as a bearing or a sleeve.

Further, the rocker assembly 20 includes a pushing frame 24 mounted on the rocker frame 21, the first rotating member 22 is located between the pushing frame 24 and the second returning member 25, the pushing frame 24 abuts against the in-position baffle 60 and drives the rocker frame 21 to rotate when the car door is closed to a proper position, and the second returning member 25 is preloaded in a compressing manner. Wherein, the first rotating member 22 is located between the pushing frame 24 and the second reset assembly 25, which is defined as the projection of the first rotating member 22, the pushing frame 24 and the second reset assembly 25 on the horizontal plane, which is defined as the reference plane perpendicular to the plane where the left knife arm assembly 43 and the right knife arm 42 are oppositely arranged and parallel to the axis of the transmission shaft.

The push bracket 24 is mounted to the rocker bracket 21 and protrudes from the surface of the rocker bracket 21 to form a bump structure. The position stop 60 abuts the push frame 24 to pivot the rocker frame 21 relative to the door vane base plate 12 to a locked position after the door is closed to a position. Accordingly, the latch hook body 33 moves closer to the stationary hook as the rocker frame 21 rotates, and is locked to the stationary hook when the rocker frame 21 rotates to the limit position, so that the rotation controllability is good, no impact occurs with the stationary hook, and the locking reliability is high. Alternatively, the thrust frame 24 is provided as a rigid cylinder or a movable rotator to fit the impact of the position fence 60 at various angles.

Further, the car door locking hook assembly 30 further includes an insertion pin plate 35 rotatably connected to the locking hook plate 31, the insertion pin plate 35 is provided with a sliding groove 351, the door frame assembly 10 includes a protruding third limiting shaft 16, and the third limiting shaft 16 is connected to the sliding groove 351 in an inserting manner. The needle insertion plate 35 is adapted to the door lock switch to cooperate with the latch hook plate 31 to trigger the electrical signal of the door lock switch in a linkage manner. The needle inserting plate 35 is provided with a sliding groove 351 which keeps straight-line and straight-line movement along with the third limiting shaft 16, the inserting direction is stable, the moving amount is controllable, and the inserting matching stability with the door lock switch is high.

The car door lock hook assembly 30 is rotatably connected to the rocker frame 21, and then connected to the door vane bottom plate 12 through the rocker frame 21, and is matched with the rocker frame 21 to realize the linear movement of the lock hook body 33 and the fixed hook in the door opening state. In an embodiment, the rocker assembly 20 further includes a second rotating member 23 mounted on the rocker frame 21, the rocker frame 21 further includes a second limiting hole 212 in an arc-shaped long hole shape, an arc-shaped central line of the second limiting hole 212 coincides with an axis of the second rotating member 23, and the second reset assembly 25 is located between the first limiting hole 211 and the second limiting hole 212. The car door locking hook assembly 30 comprises a second limiting shaft 34 installed on the locking hook plate 31, the locking hook plate 31 is rotatably connected to the second rotating member 23, and the second limiting shaft 34 is connected to the second limiting hole 212 in an inserting mode. The second reset component 25 is located between the first position-limiting hole 211 and the second position-limiting hole 212, and is a projection of the second reset component 25, the first position-limiting hole 211 and the second position-limiting hole 212 between the horizontal planes.

Alternatively, the second rotating member 23 is provided as a bearing mounted to the rocker frame 21, and the door latch hook assembly 30 includes a connecting shaft mounted to the latch plate 31, the connecting shaft being connected to the second rotating member 23. Alternatively, the second rotating member 23 is provided as a connecting shaft attached to the rocker frame 21, and the door latch hook assembly 30 includes a bearing attached to the latch plate 31, and the connecting shaft is connected to the second rotating member 23. The second limiting hole 212 is located between the rotation axis of the second rotating member 23 and the second reset component 25 to adapt to the rotation of the rocker frame 21, the second limiting hole 212 limits the rotation position of the latch plate 31 relative to the rocker frame 21, and the second reset component 25 provides elastic pre-tightening force for the rocker frame 21.

The rocker assembly 20 is limited to the rotation limit position of the door vane base plate 12 by the first limit shaft 13 during the rotation process, and during the door opening or closing movement process of the single-vane movable asynchronous door vane device, the rocker assembly 20 needs to keep the corresponding rotation position, and the vane arm hinge assembly 40 is in the clamping position for clamping the gate ball. In one embodiment, the single-blade movable asynchronous door vane device further comprises a return limit assembly 50 rotatably connected to the door vane base plate 12, and the return limit assembly 50 is slidably connected to the rocker assembly 20. When the knife arm hinge assembly 40 is in the clamping position, the return limit assembly 50 pushes against the rocker assembly 20 against the door knife base plate 12. The return limiting assembly 50 is used for locking the rocker assembly 20 so as to keep the tool arm hinge assembly 40 to maintain the posture of clamping a gate ball, no additional locking power is needed, and the structural stability is good.

The return limit assembly 50 includes a limit plate 51, a locking member 52 mounted on the limit plate 51, and an unlocking member 53, wherein the limit plate 51 includes a hinge 513, a first arm 511 intersecting the hinge 513, and a second arm 512 intersecting the first arm 511, and the second arm 512 is inclined with respect to the first arm 511. The hinge portion 513 is rotatably connected to the vane base plate 12, the locking member 52 is mounted to the first arm 511 and slidably connected to the rocker assembly 20, and the unlocking member 53 is mounted to the second arm 512 and extends away from the rocker assembly 20.

The second arm 512 extends obliquely from the first arm 511 and forms an approximate "V" shape with the first arm 511, the hinge part 513 is hinged with the knife base plate 12, the locking member 52 is located at the intersection of the first arm 511 and the second arm 512, and the unlocking member 53 is located at the end of the second arm 512. A limiting groove 213 is formed in the top of the rocker frame 21, and the locking piece 52 slides in the limiting groove 213 and is locked to the groove wall of the limiting groove 213 when the tool arm hinge assembly 40 is at the clamping position, so that the rocker frame 21 is prevented from reversing, and the position guidance is good. During the door closing process, the unlocking piece 53 impacts with an unlocking plate of the door machine to unlock the rocker frame 21 by the locking piece 52, and the rocker frame 21 rotates after being unlocked with the in-place baffle 60 to control the locking of the car door locking hook assembly 30.

As shown in fig. 7 to 9, the left knife arm assembly 43 includes a left knife arm 431, and an upper swing arm 432 and a lower swing arm 433 that are hingedly connected to the left knife arm 431, the upper swing arm 432 and the lower swing arm 433 are hingedly connected to the door knife base 12, and the transmission shaft 41 is fixedly connected to the upper swing arm 432 and located between the left knife arm 431 and the door knife base 12.

Optionally, the upper swing link 432 and the lower swing link 433 are arranged in parallel, two ends of the upper swing link 432 and the lower swing link 433 are respectively hinged to the left knife arm 431, and one end of the upper swing link 432 and one end of the lower swing link 433 are respectively hinged to the door knife rest assembly 10, so as to form a linkage movable structure similar to a quadrilateral. The transmission shaft 41 is mounted on the upper swing link 432 and is away from the hinge connection axis of the upper swing link 432 and the door vane bottom plate 12. The left knife arm 431 is moved close to the right knife arm 42 along with the rotation of the upper swing rod 432 to clamp the door lock ball of the landing door device so as to be in a clamping position; or, the left knife arm 431 moves away from the right knife arm 42 to expand the distance with the right knife arm 42 along with the rotation of the upper swing link 432, so as to release the door lock ball clamped on the landing door device to be in the open position.

The working principle and the process of the asynchronous car door lock hook are briefly described as follows:

door closing in-place state of the door machine: after the door machine is closed in place, the in-place baffle 60 fixedly connected to the door knife bottom plate 12 is abutted against the pushing frame 24 of the rocker assembly 20, and the in-place baffle 60 pushes the pushing frame 24 in the opposite direction, so as to drive the rocker assembly 20 to rotate counterclockwise around the rotation center of the rocker assembly until reaching the limiting position. When the rocker assembly 20 rotates counterclockwise relative to the door frame assembly 10, the rocker frame 21 drives the door latch hook assembly 30 to rotate around the second rotating member 23. Meanwhile, the latch plate 31 can only slide in a linear manner similar to horizontal retraction under the elastic force action of the first restoring component 32 and the limiting action of the limiting frame 11 on the door vane bottom plate 12. Moreover, the latch plate 31 drives the left knife arm assembly 43 and the rocker assembly 20 to rotate counterclockwise through the driving slot 311, and the left knife arm assembly 43 changes from a knife retracting and ball clamping state to a knife expanding state; the left arm assembly 43 is separated from the door lock ball, and the hook plate 31 falls down and is locked and is in a locked state with the fixed hook. It should be noted that, in the present application, the clockwise direction is determined from the plane of the blade arm hinge assembly 40 in the single-blade movable asynchronous door blade device as a front face.

The door opening and closing process state of the door machine is as follows:

when the door machine opens the door, the pushing frame 24 of the rocker assembly 20 and the in-place baffle 60 are separated, and the rocker assembly 20 rotates clockwise along with the increase of the door opening gap until reaching the limiting position. During this process, the rocker assembly 20 will drive the latch plate 31 to slide toward the door closing direction (the sliding principle is the same as above). The sliding distance of the latch plate 31 can be approximately the same as the door opening distance of the door machine, so that the position of the latch plate 31 in the rotation stroke of the rocker assembly 20 is kept relatively unchanged, the barb part 332 of the latch body 33 and the fixed hook keep a relatively stable gap, and the problem of locking is avoided. When the latch plate 31 slides towards the door closing direction, the latch plate 31 drives the left knife arm assembly 43 to rotate clockwise, and the door knife starts to retract. When the left knife arm assembly 43 is contacted with the landing door lock ball and then the knife is continuously retracted, the left knife arm assembly 43 rotates anticlockwise under the reverse acting force of the landing door lock ball; and then the quadrilateral upper swing link and the transmission shaft 41 drive the lock hook plate 31 to rotate anticlockwise, so as to open the car door lock hook assembly 30. After the rocker assembly 20 is rotated to the limit position, the locking member 52 of the return limit assembly 50 may limit the rocker assembly 20 from rotating counterclockwise. At the moment, the door knife finishes the door knife retracting of the cutter clamping ball, and drives the landing door to finish door opening and door closing together under the action of the door machine. When the door is closed to the proper position, the unlocking plate on the door vane base plate 12 opens the return limit assembly 50, and the in-position baffle 60 on the door vane base plate 12 strikes the pushing frame 24 of the rocker assembly 20, so as to execute the action of the door closing in-position state.

The single-blade movable asynchronous door knife device is only a preferred embodiment of the present application, and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of protection of the present application. Other structures and principles are the same as those of the prior art, and are not described in detail herein.

Claims

1. A single-knife movable asynchronous door knife device is used for a car door machine, and the door machine comprises an in-place baffle; it is characterized in that the single-blade movable asynchronous door knife device comprises:

2. The single-blade movable asynchronous door knife device according to claim 1, wherein the rocker assembly comprises a rocker frame, a first rotating member and a second resetting member, the first rotating member is mounted on the rocker frame, the first rotating member is located between the second resetting member and the limiting frame, the rocker frame is rotatably connected with the door knife base plate through the first rotating member, and the second resetting member is elastically connected with the door knife base plate to drive the rocker frame to rotate.

3. The single-blade movable asynchronous door knife device according to claim 2, wherein the rocker frame comprises a first limiting hole in the shape of an arc-shaped long hole, an arc-shaped central line of the first limiting hole is coaxial with an axis of the first rotating member, the door knife frame assembly comprises a first limiting shaft mounted on the door knife base plate, and the first limiting shaft is inserted into the first limiting hole.

4. The single-blade movable asynchronous door knife device according to claim 3, wherein the rocker assembly further comprises a second rotating member mounted on the rocker frame, the rocker frame further comprises a second limiting hole in the shape of an arc-shaped long hole, an arc-shaped central line of the second limiting hole coincides with an axis of the second rotating member, the second reset assembly is located between the first limiting hole and the second limiting hole, the car door lock hook assembly comprises a second limiting shaft mounted on the lock hook plate, the lock hook plate is rotatably connected to the second rotating member, and the second limiting shaft is connected to the second limiting hole in an inserting manner.

5. The single-blade movable asynchronous door knife device according to claim 2, wherein the rocker assembly comprises a pushing frame mounted on the rocker frame, the first rotating member is located between the pushing frame and a second reset assembly, the pushing frame abuts against the in-position baffle and drives the rocker frame to rotate when the car door is closed in place, and the second reset assembly is compressed and pre-tensioned.

6. The single-blade movable asynchronous door knife device according to claim 1, wherein the driving slot is a long hole, the driving slot comprises two opposite and parallel side walls, and the transmission shaft is tangent to the side walls.

7. The single-blade movable asynchronous door knife device according to claim 1, wherein the latch body comprises a branch arm portion and a barb portion protruding from the branch arm portion, and the branch arm portion extends in a direction perpendicular to the side wall of the driving slot.

8. The single-blade movable asynchronous door knife device according to claim 1, further comprising a return limit assembly rotatably connected to the door knife base plate, the return limit assembly being slidably connected to the rocker assembly; when the knife arm hinge assembly is located at the clamping position, the return limiting assembly pushes the rocker assembly to abut against the door knife bottom plate.

9. The single-blade movable asynchronous door knife device according to claim 8, wherein the return limiting assembly comprises a limiting plate, a locking member and an unlocking member, the locking member is mounted on the limiting plate, the limiting plate comprises a hinged portion, a first support arm intersecting the hinged portion, and a second support arm intersecting the first support arm, the second support arm is inclined relative to the first support arm, the hinged portion is rotatably connected to the door knife base plate, the locking member is mounted on the first support arm and slidably connected to the rocker assembly, and the unlocking member is mounted on the second support arm and extends in a direction away from the rocker assembly.

10. The single-blade movable asynchronous door knife device according to claim 1, wherein the left knife arm assembly comprises a left knife arm, an upper swing arm and a lower swing arm hinged to the left knife arm, the upper swing arm and the lower swing arm are hinged to the door knife base plate, and the transmission shaft is fixedly connected to the upper swing arm and located between the left knife arm and the door knife base plate.