CN111425073B - Door lock device for shielding door - Google Patents

Abstract

The application provides a door lock device of a shielding door, which comprises a limiting column fixedly installed, a lock hook which is installed in a swinging way relative to a door plate and matched with the limiting column, a support, a transmission part and an elastic part, wherein the support is fixedly installed relative to the door plate, the transmission part is arranged in a sliding way and penetrates through the support, one end of the transmission part is a driving end connected with a shielding door driving mechanism, the other end of the transmission part is a linkage end movably connected with the lock hook, a force application part which can bidirectionally act on the support along a door plate moving path is fixed on the transmission part, the lock hook is provided with a first state for hooking the limiting column to lock the door plate and a second state for avoiding the limiting column, the lock hook swings relative to the support to be switched between the two states, and the elastic part acts between the support and the transmission part or the lock hook to drive the lock hook to enter the first state. The door lock device of the shielding door provided by the application replaces an electromagnet with a mechanical structure, so that the sequential actions of closing, locking, unlocking and opening the door are completed, and the potential safety hazard caused by using the electromagnet is reduced.

Description

Door lock device of shielding door

Technical Field

The application relates to the technical field of subway shielding doors, in particular to a door lock device of a shielding door.

Background

In the screening door industry, sliding doors are the only passage between the door system and the platform of a rail train in daily operation, and are also important units for ensuring the safety of passengers. Door locks are an important element in security.

When the sliding door machine is closed by the motor through the belt, the lock pin of the sliding door excites the door lock to lock, and when the door opening signal is not received, the sliding door cannot be opened by external force, so that the safety locking function is achieved. When the door machine receives an unlocking signal, a door lock electromagnet or a motor in the door machine is electrified and started, and the door lock electromagnet or the motor is unlocked through a connecting rod. At this time, the door lock hook is released, and the sliding door can be opened.

The structural design of the door locks on the market is different at present, but the locking and unlocking of the door locks are mostly controlled by adopting electromagnets. Because of the inherent property of the electromagnet, the electromagnet of the door lock can magnetize nearby parts after long-term use, so that the normal opening and closing of the sliding door are affected, and potential safety hazards exist.

Disclosure of Invention

The application provides a door lock device of a shielding door, which replaces an electromagnet with a mechanical structure, completes door closing, locking, unlocking and opening actions, and reduces potential safety hazards caused by using the electromagnet.

The application provides a door lock device of a shielding door, which comprises a limiting column fixedly installed, a lock hook which is installed in a swinging way relative to a door plate and matched with the limiting column, a support, a transmission piece and an elastic piece, wherein the support is arranged on the door lock device;

The support is fixedly arranged relative to the door plate;

the transmission piece is arranged on the support in a sliding penetrating way, one end of the transmission piece is a driving end connected with the shielding door driving mechanism, the other end of the transmission piece is a linkage end movably connected with the locking hook, and the transmission piece is fixedly provided with a force application piece which can bidirectionally act on the support along a door plate movement path;

The lock hook is provided with a first state for hooking the limit post to lock the door plate and a second state for avoiding the limit post, and the lock hook is switched between the two states by swinging relative to the support;

The elastic piece acts between the support and the transmission piece or the lock hook to drive the lock hook to enter a first state.

The following provides several alternatives, but not as additional limitations to the above-described overall scheme, and only further additions or preferences, each of which may be individually combined for the above-described overall scheme, or may be combined among multiple alternatives, without technical or logical contradictions.

Optionally, the force application member and the transmission member are in an integral or split structure.

Optionally, the force application member and the support are matched in the following manner:

the driving part is a push-pull rod with the extending direction consistent with the door plate moving direction, the force application parts are two, the support is provided with a baffle plate which is used for the push-pull rod to pass through and interfere with the moving path of the force application parts, and the baffle plate is positioned between the two force application parts and leaves a movable gap with the force application parts, or

The transmission part is a push-pull rod with the extension direction consistent with the movement direction of the door plate, the force application part is one block, the support is provided with two baffles for the push-pull rod to pass through and interfere with the movement path of the force application part, and the force application part is positioned between the two baffles and leaves a movable gap with the baffles, or

The driving part is a push-pull rod with the extension direction consistent with the movement direction of the door plate, the force application parts are two, the support is provided with two baffle plates for the push-pull rod to pass through and interfere with the movement path of the force application parts, and the two force application parts are positioned between the two baffle plates and keep a movable gap with the baffle plates, or

The driving part is a push-pull rod with the extending direction consistent with the door plate moving direction, the force application parts are two, the support is provided with two baffles which are used for the push-pull rod to pass through and interfere with the moving path of the force application parts, and the two baffles are positioned between the two force application parts and keep a movable gap with the force application parts;

when the transmission piece moves along the door opening direction, the movable clearance is utilized to drive the latch hook to release the lock in advance.

Optionally, a sliding pin is fixed at the linkage end;

The latch hook includes:

The mounting part is provided with a shaft hole in running fit with the support;

the hook part is provided with a clamping groove for the limiting column to clamp in for limiting;

And the driving part is provided with a sliding groove for the sliding pin to be inserted and slid.

Optionally, the distance between the sliding groove and the shaft hole is 1/10-1/3 of the distance between the clamping groove and the shaft hole.

Optionally, the latch hook is provided with a guide inclined plane which guides the latch hook to swing and lock on the limiting column, and the inclination angle of the guide inclined plane relative to the axial direction of the push-pull rod is 20-60 degrees.

The sliding groove is arranged on the transmission part, the sliding pin is arranged on the sliding groove, the sliding groove is arranged on the sliding groove, the sliding pin is arranged on the sliding groove, the sliding groove extends along an arc shape, the sliding pin is arranged on the locking position of the sliding groove in the first state, the sliding pin is arranged on the unlocking position of the sliding groove in the second state, and the included angle between the tangential direction of the arc shape and the moving direction of the transmission part is gradually increased along the direction close to the unlocking position in the first state.

Optionally, the transmission part is a push-pull rod with the extending direction consistent with the door plate moving direction, the force application part is two blocks sleeved on the push-pull rod, the support is provided with two baffles for the push-pull rod to pass through and interfere with the moving path of the force application part, and the two baffles are positioned between the two force application parts and keep a movable gap with the force application part;

the push-pull rod is fixed with a limiting seat between two baffles, the elastic piece is a pressure spring sleeved on the push-pull rod, one end of the pressure spring abuts against one baffle, and the other end of the pressure spring abuts against the limiting seat.

Optionally, the door panel driving device further comprises a manual unlocking mechanism, wherein the manual unlocking mechanism comprises an operation end and a driving end which is linked with the operation end and is propped against the force application piece.

Optionally, the manual unlocking mechanism includes:

The rotating shaft is fixedly arranged relative to the limit column;

The manual operation frame is installed in a lifting manner relative to the limit column, and the operation end is arranged at the bottom of the manual operation frame;

The bending plate is rotatably arranged on the rotating shaft and is provided with a pressure bearing part propped against the top surface of the manual operation frame and the driving end propped against the force application part.

The door lock device of the shielding door provided by the application replaces an electromagnet with a mechanical structure, so that the sequential actions of closing, locking, unlocking and opening the door are completed, and the potential safety hazard caused by using the electromagnet is reduced.

Drawings

FIG. 1 is a schematic view showing the structure of a door lock device of an embodiment of a shield door according to the present application;

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

FIG. 3 is an enlarged view of region B of FIG. 1;

FIG. 4 is a schematic view showing the structure of an embodiment of a door lock device of a shield door according to the present application;

FIG. 5 is a perspective view of an embodiment of a door lock apparatus of a shielded door of the present application;

FIG. 6 is a schematic view showing the structure of an embodiment of a door lock device of a shield door according to the present application;

FIG. 7 is an enlarged view of region C of FIG. 5;

FIG. 8 is a schematic view showing the relative positions of the sliding pin and the sliding slot in an embodiment of the door lock apparatus of the present application;

Fig. 9 is a schematic view showing the relative positions of the sliding pin and the sliding groove in an embodiment of the door lock device of the shield door of the present application.

Reference numerals in the drawings are described as follows:

1. the device comprises a limiting post, a2, a locking hook, a 21, an installation part, a 22, a hook part, a 23, a driving part, a 24, a shaft hole, a 25, a clamping groove, a 26, a chute, a 27, a guiding inclined plane, a 3, a support, a 31, a baffle, a 4, a transmission part, a 41, a driving end, a 42, a linkage end, a 421, a sliding pin, a 43, a force application part, a 44, a limiting seat, a 5, an elastic part, a 6, a movable gap, a 71, an operation end, a 711, a manual operation frame, 7111, an offset part, 7112, a mandril, 72, a driving end, 721, an avoidance hole, 8, a door plate, 9, a rotating shaft, 91, a bending plate, 911, a pressure-bearing part, 10 and a micro switch.

Detailed Description

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1, in one embodiment, the door lock device of the shielding door includes a fixed limiting post 1, a locking hook 2 which is pivotally mounted relative to a door panel (not shown in the figure) and is matched with the limiting post, and further includes a support 3, a transmission member 4 and an elastic member 5.

The support 3 is fixedly arranged relative to the door plate. The transmission part 4 is arranged in the support 3 in a sliding way. One end of the transmission piece 4 is a driving end 41 connected with the shielding door driving mechanism, and the other end is a linkage end 42 movably connected with the latch hook 2. The driving element 4 is fixed with a force application element 43 which can act on the support 3 bidirectionally along the door panel movement path.

The latch hook 2 has a first state (i.e., the state shown in fig. 1) for hooking the stopper post 1 to lock the door panel and a second state (not shown in the figure) for avoiding the stopper post. The elastic element 5 acts between the support 3 and the transmission element 4 or the locking hook 2, driving the locking hook 2 into the first state, the locking hook 2 being switched between the two states by swinging with respect to the support 3.

The shield door in this embodiment may be comprised of one, two or more door panels. The shielding door driving machine drives the door plate to move back and forth along the transverse direction (the same direction or opposite direction as the arrow X in fig. 1) in fig. 1, so as to realize the closing and opening of the shielding door.

Under normal use condition, the closing and opening of the shielding door are controlled by the driving mechanism. In the actual use process of the shielding door, external force (such as manpower) can directly act on the door plate, so that the shielding door is forcibly opened, and potential safety hazards exist. The basic function of the door lock device provided in this embodiment is to ensure that the shield door can only be closed and opened under the control of the driving mechanism, and that the shield door cannot be opened by directly acting on the door panel.

The traditional door lock device adopts an electromagnet, and a control signal is required to be sent out at a set moment to enable the electromagnet to drive a locking piece (such as a lock pin) to act, so that the aim of locking and unlocking the door plate is fulfilled. In order to solve the reliability and safety problems caused by the fact that the locking piece is driven by the electromagnet, the embodiment aims to drive the locking piece to act by means of mechanical power of an existing driving mechanism of the shielding door system, and the purposes of locking and unlocking the door plate are achieved.

It will be appreciated that the shield door driving mechanism in this embodiment has a movable portion which can move left or right in the lateral direction in fig. 1. In the conventional door lock device for a shield door, the door panel moves together with the movable portion, and the door panel is not freely movable in the lateral direction with respect to the movable portion. The door panel in this embodiment is not directly fixed to the movable portion of the shield door driving mechanism, but has a certain space free to move in the lateral direction with respect to the movable portion.

Specifically, the transmission member 4 and the urging member 43 in the present embodiment are fixed with respect to the movable portion of the shield door driving mechanism, and the mount 3 in the present embodiment is fixed with respect to the door panel. The force application member 43 is capable of driving the door panel to move left or right in the transverse direction in fig. 1 on the one hand, and a movable gap 6 as shown in fig. 1 exists between the force application member 43 and the support 3 on the other hand. Because of the movable gap 6, the transmission piece 4 can still move transversely on the premise of the lateral position of the door plate being fixed, and the lateral movement of the transmission piece 4 enables the lock hook 2 to swing, so that the door plate is locked and unlocked.

The opening and closing process of the shield door and the locking and unlocking process of the door lock device in this embodiment are described as follows:

In the initial state, the shielding door is in an open state, the position of the door plate is far away from the limiting column 1, the lock hook 2 is far away from the limiting column 1 along with the door plate, and the lock hook 2 is in a first state. It should be noted that the first state and the second state emphasize different spatial attitudes (spatial rotation angles) of the latch hook 2, and are irrelevant to the spatial position of the latch hook 2, for example, the latch hook 2 may have a first state and a second state at a position close to the limit post 1, and the latch hook 2 may also have a first state and a second state at a position far from the limit post 1.

When the shielding door needs to be closed, the transmission part 4 moves towards the X direction in fig. 1 under the drive of the shielding door driving mechanism, the force application part 43 contacts the support 3 and pushes the support 3 to move towards the X direction in fig. 1, and the door plate and the lock hook 2 which are arranged on the support 3 are gradually close to the limit post 1 until the shielding door is closed. In the process of closing the shielding door, the door plate moves towards the X direction in fig. 1 to finish the door closing action, and the swing of the latch hook 2 is used to finish the door locking action.

The specific completion process of the door locking action is as follows:

The latch hook 2 is initially in the first state shown in fig. 1, the latch hook 2 being moved in the direction X in fig. 1 until the end (head) of the latch hook 2 remote from the rotation axis touches the limit post 1. And at the same time, the transmission part 4 transversely displaces relative to the support 3, and the elastic part 5 between the transmission part 4 and the support 3 stores energy or the elastic part 5 between the lock hook 2 and the support 3 stores energy. In the second state, the head of the latch hook 2 continues to move in the X direction in fig. 1, avoiding the limit post 1. After the head of the latch hook 2 bypasses the limit post 1, an elastic piece 5 between the latch hook 2 and the support 3 directly acts on the latch hook 2 to enable the latch hook 2 to return to the first state and be hooked with the limit post 1, or an elastic piece 5 between the transmission piece 4 and the support 3 acts on the transmission piece 4 and then acts on the latch hook 2 through the transmission piece 4 to enable the latch hook 2 to return to the first state and be hooked with the limit post 1.

When the shielding door needs to be opened, the transmission piece 4 moves in the direction opposite to the X direction in fig. 1 under the drive of the shielding door driving mechanism. Since there is a play 6 between the force application member 43 and the carrier 3 as shown in fig. 1, the transmission member 4 does not initially act on the carrier 3 but only on the locking hook 2. In other words, the door panel does not move to the right along with the transmission member 4 at the beginning, but only the transmission member 4 pulls the latch hook 2 to switch the latch hook 2 from the first state to the second state, thereby completing the unlocking action. After unlocking is completed, the force application member 43 acts on the support 3, and the transmission member 4 pulls the support 3 and the door panel to move rightwards, so that the door opening action is completed.

Both locking and unlocking of the screening door requires a relative movement between the transmission member 4 and the abutment 3. If a user tries to forcibly open the shielding door by pushing the door panel, the support 3 moves together with the transmission member 4, and the support and the transmission member cannot move relatively, so that the latch hook 2 cannot swing to unlock, thereby avoiding accidents.

The embodiment completes the door closing, locking, unlocking and opening actions of the shielding door by means of the mechanical component linked with the shielding door driving mechanism, avoids using an electromagnet, and is safer and more reliable.

In one embodiment, the shielding door driving mechanism is a synchronous belt transmission mechanism driven by a motor, and the movable part of the shielding door driving mechanism is a flexible synchronous belt. The driving end of the driving part 4 is fixedly connected with the synchronous belt.

In one embodiment, the force application member is integral with or separate from the transmission member. The integral or split structure can keep the relative position of the force application part and the transmission part fixed. The force application part and the transmission part of the integrated structure have smaller position deviation and high reliability in the use process. The force application part and the transmission part of the split structure are easier to process and manufacture.

In order to allow a play between the force application member 43 and the support 3 and to be able to act on the support 3 in both directions, various implementations are possible.

Specifically, in one embodiment, the transmission member 4 is a push-pull rod with an extension direction consistent with a movement direction of the door panel, the force application member 43 is two blocks sleeved (other fixed installation modes can also be adopted) on the push-pull rod, the support 3 is provided with a baffle plate for the push-pull rod to pass through and interfere with a movement path of the force application member 43, and the baffle plate is located between the two force application members and leaves a movable gap with the force application members. When the transmission part 4 moves along the door opening direction, the movable clearance is utilized to drive the lock hook 2 to release the lock in advance. The urging member 43 is mainly for the purpose of abutting and interlocking between the members, and thus the specific shape is not strictly limited.

In an embodiment, the transmission member 4 is a push-pull rod with an extension direction consistent with a movement direction of the door panel, the force application member 43 is a piece sleeved on the push-pull rod, the support 3 is provided with two baffles for the push-pull rod to pass through and interfere with a movement path of the force application member, and the force application member is positioned between the two baffles and leaves a movable gap with the baffles. When the transmission piece moves along the door opening direction, the movable clearance is utilized to drive the lock hook to release the lock in advance.

In an embodiment, the transmission member 4 is a push-pull rod with an extension direction consistent with the movement direction of the door panel, the force application member 43 is two blocks sleeved on the push-pull rod, the support 3 is provided with two baffles for the push-pull rod to pass through and interfere with the movement path of the force application member, and the two force application members are positioned between the two baffles and keep a movable gap with the baffles. When the transmission piece moves along the door opening direction, the movable clearance is utilized to drive the lock hook to release the lock in advance.

In one embodiment, as shown in fig. 2, the transmission member 4 is a push-pull rod with an extension direction consistent with a door panel movement direction, the force application member 43 is two blocks sleeved on the push-pull rod, the support 3 is provided with two baffles 31 for the push-pull rod to pass through and interfere with the force application member movement path, and the two baffles 31 are positioned between the two force application members 43 and leave a movable gap 6 with the baffles 31.

When the transmission piece moves along the door opening direction, the movable clearance is utilized to drive the lock hook to release the lock in advance.

Each force application member may be a single or a collection of multiple force application members.

In one embodiment, as shown in FIG. 3, the link end 42 is secured with a slide pin 421. The latch hook 2 includes a mounting portion 21, a hooking portion 22, and a driving portion 23. The mounting portion 21 has a shaft hole 24 in a rotating fit with the holder 3. The hook 22 is provided with a clamping groove 25 for clamping the limiting column 1 into limit. The driving portion 23 has a slide groove 26 into which the slide pin 421 is inserted and slides. The locking hook 2 can swing around the shaft hole 24 relative to the support 3, the transmission piece 4 can move transversely relative to the support 3, and the sliding fit of the sliding pin 421 and the sliding groove 26 determines the linkage relationship between the locking hook 2 and the transmission piece 4.

Taking the unlocking process as an example, the initial state is the locked state shown in fig. 3, the limit post 1 is located in the clamping groove 25, and the sliding pin 421 is located at the left end of the sliding groove 26. When the door is to be unlocked before opening, the transmission piece 4 is pulled rightward, the sliding pin 421 slides to the right end of the chute 26, and the sliding pin 421 cannot move up and down, so that the locking hook 2 rotates clockwise around the shaft hole 24, and the limit post 1 is separated from the clamping groove 25, thereby completing the unlocking action.

Specifically, in one embodiment, as shown in fig. 3, the distance between the chute and the shaft hole is 1/10-1/3 of the distance between the clamping groove and the shaft hole. The distance between the chute and the shaft hole is understood to be the maximum distance between the circumference of the chute and the circumference of the shaft hole. The distance between the clamping groove and the shaft hole is understood as the maximum distance between the periphery of the clamping groove and the periphery of the shaft hole. If the proportion is too small, the requirement on the processing precision of the parts is high, and the reliability is difficult to ensure. If the ratio is too large, the requirements for the shield door driving mechanism are too high.

Further, in one embodiment, as shown in fig. 3, the latch hook 2 is provided with a guiding inclined plane 27 for guiding itself to swing and lock on the limiting post, and the inclination angle of the guiding inclined plane relative to the axial direction of the push-pull rod is 20 ° to 60 °.

In an embodiment, as shown in fig. 3, the sliding groove extends along an arc shape, in a first state, the sliding pin 421 is located at a locking position of the sliding groove 26, in a second state, the sliding pin 421 is located at an unlocking position of the sliding groove 26, and in the first state, an included angle between a tangential direction of the arc shape and a moving direction of the transmission member is gradually increased along a direction approaching to the unlocking position. The locking position is the left lower end (shielded by the transmission member 4) of the chute in fig. 3, and the right upper end of the chute in the bitmap 3 is unlocked. Compared with the sliding groove extending along the straight line, the sliding groove extending along the arc can reduce the transverse displacement of the transmission piece 4 when the sliding pin slides from one end of the sliding groove to the other end, and reduce the deformation amount of the synchronous belt.

Specifically, in one embodiment, as shown in fig. 2, the transmission member 4 is a push-pull rod with an extension direction consistent with a movement direction of the door panel, the force application member 43 is two blocks sleeved on the push-pull rod, the support 3 is provided with two baffles 31 for the push-pull rod to pass through and interfere with a movement path of the force application member 43, and the two baffles 31 are located between the two force application members 43 and keep a movable gap with the baffles 31.

The push-pull rod is fixed with a limiting seat 44 between the two baffles 31, the elastic piece 5 is a pressure spring sleeved on the push-pull rod, one end of the pressure spring is propped against one baffle 31, and the other end of the pressure spring is propped against the limiting seat 44.

The function of the limit seat 44 is to transmit forces between the transmission element 4 and the elastic element 5. When the latch hook 2 moves from the first state to the second state, the transmission member 4 moves rightwards relative to the support 3, and two ends of the elastic member 5 are respectively pushed by the limiting seat 44 and the baffle plate 31 to store energy. When the latch hook 2 moves from the second state to the first state, the elastic member 5 pushes the limiting seat 44 and the transmission member 4 to move leftwards.

In an embodiment, as shown in fig. 4, 5 and 6, the shielding door includes two door panels 8 that are opened in opposite directions, the two door panels 8 are driven by two sections of synchronous belts that are parallel to each other and move in opposite directions of the synchronous belt driving mechanism, and the door lock devices of the shielding door are two sets and are respectively linked with the two door panels 8. Specifically, the transmission member of one set of door lock device is connected with the travel-out section Duan Guding of the synchronous belt, and the transmission member of the other set of door lock device is fixedly connected with the travel-back section of the synchronous belt. When the motor of the synchronous belt driving mechanism rotates positively, the shielding door is closed and the door plate is locked, and when the motor of the synchronous belt driving mechanism rotates reversely, the door plate is unlocked and the shielding door is opened.

In an embodiment, as shown in fig. 4, 5 and 7, the door driving device further includes a manual unlocking mechanism, and the manual unlocking mechanism includes an operation end 71 and a driving end 72 that is linked with the operation end 71 and abuts against the force application member 43. The operation end 71 is one and is installed in the middle of two door panels, and is shared by two sets of door panel driving devices, and the driving end 72 is two and is respectively in linkage with the transmission parts 4 of the two sets of door panel driving devices. The manual unlocking mechanism can be operated by professionals when maintenance is needed, and the reliability of the door lock device is improved.

Specifically, the manual unlocking mechanism includes a rotation shaft 9, a manual operation frame 711, and a bending plate 91. The rotating shaft 9 is fixedly installed relative to the limit post 1. The manual operation frame 711 is installed to be capable of being lifted and lowered relative to the limit post 1, an operation end 71 is arranged at the bottom of the manual operation frame, a bending plate 91 is rotatably installed on the rotating shaft 9, and the bending plate 91 is provided with a pressure bearing portion 911 abutted against the top surface of the manual operation frame 711 and a driving end 72 abutted against the force application member 43.

A sleeve through which the rotation shaft 9 passes is provided between the bearing portion 911 and the driving end 72, and the manual operation frame 711 includes an offset portion 7111 and a plunger 7112 which are sequentially fixed to the operation end 71. When the operator end 71 is pushed upward by a man power, the ejector rod 7112 presses the pressure-bearing portion 911 upward, the bending plate 91 rotates clockwise about the rotation shaft 9 in fig. 7, the driving end 72 is provided with a avoiding hole 721 through which the driving member 4 passes, and the driving end 72 pushes the force application member 43 rightward, so that the driving member 4 moves rightward relative to the support 3 to be unlocked. The specific unlocking process can refer to the foregoing embodiments, and will not be described herein.

In one embodiment, as shown in fig. 5, the door lock device of the shielding door further includes a micro switch 10 fixed adjacent to the limit post 1, and in the first state, the latch hook triggers the micro switch 10. The microswitch 10 sends a door panel locking signal to the screen door control system for confirmation.

In one embodiment, as shown in fig. 2, the transmission member 4 is a push-pull rod, and the force application members are two, wherein one force application member adopts a rubber buffer gasket, and the other force application member is a lock nut in threaded fit with the push-pull rod. The size of the movable gap can be adjusted by adjusting the position of the lock nut relative to the push-pull rod. If the movable gap is smaller by adjusting the lock nut, the lock nut pushes the door plate to close, if the movable gap is moderate, the lock nut and the limit seat 44 can push the door plate to close together, and if the movable gap is larger, the limit seat 44 pushes the door plate to close, and the lock nut can be canceled.

In one embodiment, as shown in fig. 8 and 9, the diameter of the sliding pin 421 is smaller than the groove width of the sliding groove 26, and a fit gap G exists between the sliding pin 421 and the sliding groove 26. During unlocking, the sliding pin 421 moves to the right in the arrow direction in fig. 8 and 9 for a small idle stroke, and then touches the groove wall of the chute 26 to pull the latch hook 2 to lift and unlock. After unlocking, the sliding pin 421 does not reach the top of the chute 26, and can be unlocked in the middle of the arc. By lengthening the slide groove 26, a sufficient movement margin of the slide pin 421 can be ensured.

In one embodiment, a torsion spring (not shown) is provided adjacent to the shaft hole 24 and connected between the latch hook 2 and the support 3, and the latch hook 2 is driven to enter the first state by the restoring force of the torsion spring and is hooked and locked with the limit post 1.

In one embodiment, the locking of the lock hook and the feedback mechanism of the switch signal are combined. When the motor is electrified, the connecting rod is driven to act, so that the lock hook swings to unlock, and the switch is excited at the same time, and an automatic unlocking signal is sent to the system. The fit of the switch is also of great importance, and in the design, the position of the switch is adjusted by adopting an adjustable waist groove mode, so that the mounting position of the switch is more flexible, and the processing requirement is reduced.

In an embodiment, in the design of the locking hook for locking by turning, a design of a rotation limit shape of the locking hook is added to prevent the locking hook from being driven to be out of position by a sliding door lock connecting rod in the process of opening and closing the door, so as to influence the sliding door locking hook to enter a set position of the locking hook when the door is closed next time.

In one embodiment, in the hook design, a bending plate design is used to match the sliding door link to move, and the bending plate is also used for activating the door locking in-place switch, so that the design is simplified.

In one embodiment, in the manual unlocking design, a bent plate design is employed to accommodate movement of the sliding door carrier bar.

In one embodiment, cushioning rubber pads are employed on the impact members to reduce the sound and sliding resistance of the mechanism during impact.

In one embodiment, the mechanism revolute pair is made of a high performance material or element. In the rotation process of the lock hook, aluminum bronze is adopted as rotation friction. Therefore, the whole mechanism is smoother in the motion process, and the motion precision and the service life are improved.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description. When technical features of different embodiments are embodied in the same drawing, the drawing can be regarded as a combination of the embodiments concerned also being disclosed at the same time.

The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.

Claims (9)

1. The door lock device of the shielding door comprises a limiting column fixedly installed and a lock hook which is installed in a swinging way relative to the door plate and matched with the limiting column, and is characterized by further comprising a support, a transmission piece and an elastic piece;

The support is fixedly arranged relative to the door plate;

the transmission piece is arranged on the support in a sliding penetrating way, one end of the transmission piece is a driving end connected with the shielding door driving mechanism, the other end of the transmission piece is a linkage end movably connected with the locking hook, and the transmission piece is fixedly provided with a force application piece which can bidirectionally act on the support along a door plate movement path;

The lock hook is provided with a first state for hooking the limit post to lock the door plate and a second state for avoiding the limit post, and the lock hook is switched between the two states by swinging relative to the support;

The elastic piece acts between the support and the latch hook to drive the latch hook to enter a first state;

the force application piece and the support are matched in the following manner:

the driving part is a push-pull rod with the extending direction consistent with the door plate moving direction, the force application parts are two, the support is provided with a baffle plate which is used for the push-pull rod to pass through and interfere with the moving path of the force application parts, and the baffle plate is positioned between the two force application parts and leaves a movable gap with the force application parts, or

The transmission part is a push-pull rod with the extension direction consistent with the movement direction of the door plate, the force application part is one block, the support is provided with two baffles for the push-pull rod to pass through and interfere with the movement path of the force application part, and the force application part is positioned between the two baffles and leaves a movable gap with the baffles, or

The driving part is a push-pull rod with the extension direction consistent with the movement direction of the door plate, the force application parts are two, the support is provided with two baffle plates for the push-pull rod to pass through and interfere with the movement path of the force application parts, and the two force application parts are positioned between the two baffle plates and keep a movable gap with the baffle plates, or

The driving part is a push-pull rod with the extending direction consistent with the door plate moving direction, the force application parts are two, the support is provided with two baffles which are used for the push-pull rod to pass through and interfere with the moving path of the force application parts, and the two baffles are positioned between the two force application parts and keep a movable gap with the force application parts;

when the transmission piece moves along the door opening direction, the movable gap is utilized to drive the latch hook to release the lock in advance.

2. The door lock device of a shield door according to claim 1, wherein the urging member is of an integral or separate structure with the transmission member.

3. The door lock device of a shield door according to claim 1, wherein the link end is fixed with a slide pin;

The latch hook includes:

The mounting part is provided with a shaft hole in running fit with the support;

the hook part is provided with a clamping groove for the limiting column to clamp in for limiting;

And the driving part is provided with a sliding groove for the sliding pin to be inserted and slid.

4. The door lock device of the shielding door according to claim 3, wherein the distance between the sliding groove and the shaft hole is 1/10-1/3 of the distance between the clamping groove and the shaft hole.

5. The door lock device of the shield door according to claim 1, wherein the lock hook is provided with a guide inclined surface for guiding the lock hook to swing and lock on the limit post, and the inclination angle of the guide inclined surface relative to the axial direction of the push-pull rod is 20-60 degrees.

6. A door lock device of a shielding door according to claim 3, wherein the sliding groove extends along an arc shape, the sliding pin is in a locking position of the sliding groove in a first state, the sliding pin is in an unlocking position of the sliding groove in a second state, and an included angle between a tangential direction of the arc shape and a moving direction of the driving member is gradually increased in a direction approaching the unlocking position in the first state.

7. The door lock device of the shielding door according to claim 1, wherein the transmission member is a push-pull rod with an extension direction consistent with a door plate movement direction, the force application member is two blocks sleeved on the push-pull rod, the support is provided with two baffle plates for the push-pull rod to pass through and interfere with a movement path of the force application member, and the two baffle plates are positioned between the two force application members and keep a movable gap with the force application member;

the push-pull rod is fixed with a limiting seat between two baffles, the elastic piece is a pressure spring sleeved on the push-pull rod, one end of the pressure spring abuts against one baffle, and the other end of the pressure spring abuts against the limiting seat.

8. The door lock device of a shielded door according to claim 1, wherein the door panel driving device further includes a manual unlocking mechanism including an operation end and a driving end that is interlocked with the operation end and abuts against the urging member.

9. The door lock apparatus of a shield door according to claim 8, wherein the manual unlocking mechanism includes:

The rotating shaft is fixedly arranged relative to the limit column;

The manual operation frame is installed in a lifting manner relative to the limit column, and the operation end is arranged at the bottom of the manual operation frame;

The bending plate is rotatably arranged on the rotating shaft and is provided with a pressure bearing part propped against the top surface of the manual operation frame and the driving end propped against the force application part.