CN113213317A

CN113213317A - Anti-abrasion electric lock, car door lock device and elevator

Info

Publication number: CN113213317A
Application number: CN202110566696.4A
Authority: CN
Inventors: 陈昌伟; 龙德安; 敖航冠; 肖永恒
Original assignee: Hitachi Elevator China Co Ltd
Current assignee: Hitachi Elevator China Co Ltd
Priority date: 2021-05-24
Filing date: 2021-05-24
Publication date: 2021-08-06

Abstract

The invention belongs to the technical field of elevator lock body equipment, and provides an anti-abrasion electric lock, a car door lock device and an elevator, which mainly comprise a conductive contact part, a push rod and a mounting seat assembly, wherein the push rod and the mounting seat assembly synchronously and transversely move with the conductive contact part; the mounting seat assembly comprises a switch seat and a supporting seat, the supporting seat is fixedly arranged, the switch seat is arranged on the supporting seat in a relatively sliding manner, and a switch body electrically conducted with the conductive contact part is correspondingly arranged on the switch seat; the push rod can move along with the transverse movement of the conductive contact part to be abutted against and contacted with the switch seat, an elastic resetting piece is arranged between the switch seat and the supporting seat, and the elastic force of the elastic resetting piece is overcome when the push rod is abutted against and contacted with the switch seat to do work. The invention can effectively prolong the service life of the car door lock on the premise of ensuring that the car door lock meets the structural design requirement.

Description

Anti-abrasion electric lock, car door lock device and elevator

Technical Field

The invention belongs to the technical field of elevator lock body equipment, and particularly relates to an anti-abrasion electric lock, a car door lock device and an elevator.

Background

An elevator is generally provided with a car door lock device, and aims to prevent the occurrence of a safety accident that a door is opened in a car when the elevator is in operation. At present, the structural requirements of national standards on car door locks are as follows: the car is equipped with a mechanical locking device and can only be opened in the unlocking zone of the landing door, the size of the engagement of the locking device is not less than 7mm, and the locking of the car door must be verified by a corresponding electrical safety switch. It is understood colloquially that a car door lock needs to consist of a mechanical lock (snap action) and an electrical lock (contact make-break action).

In the existing car door lock, a mechanical lock and an electric lock are engaged and switched on and off simultaneously. The latch hook of a mechanical lock is usually fitted with the lock holder in a longitudinally reversed manner, and accordingly, the switch contact of the electrical lock is arranged on the latch hook, the switch body is arranged on the lock holder, and the switch contact is inserted into the switch body in a longitudinally reversed manner. In order to ensure safe and reliable opening of the car door, the lock hook can transversely move for a short distance during unlocking to normally turn over and unlock, and the car door lock and the landing door lock are unlocked in sequence; in the process, the switch contact can synchronously slide a small distance transversely relative to the switch body, but the switch contact and the switch body are in close contact with each other under the action of spring force, so that sliding abrasion can be caused between the switch contact and the switch body in the sliding process, the silver strips on the switch body are damaged by scratches or extrusion deformation, and poor contact is caused.

Disclosure of Invention

In order to overcome the above disadvantages of the prior art, the present invention provides an anti-wear electric lock, a car door lock device and an elevator thereof, so as to provide an electric lock with high protection degree, ensure that the car door lock meets the structural design requirements, and effectively prolong the service life of the car door lock.

The technical scheme adopted by the invention for solving the technical problems is as follows:

an anti-abrasion electric lock comprises a conductive contact part, a push rod and a mounting seat assembly, wherein the push rod and the mounting seat assembly synchronously move transversely;

the mounting seat assembly comprises a switch seat and a supporting seat, the supporting seat is fixedly arranged, the switch seat is arranged on the supporting seat in a relatively sliding manner, and a switch body electrically conducted with the conductive contact part is correspondingly arranged on the switch seat;

the push rod can move along with the transverse movement of the conductive contact part to be abutted against and contacted with the switch seat, an elastic resetting piece is arranged between the switch seat and the supporting seat, and the elastic force of the elastic resetting piece is overcome when the push rod is abutted against and contacted with the switch seat to do work.

Preferably, a passive contact portion is provided in the switch body, and the passive contact portion is electrically connected to a cable.

Preferably, a sliding block is arranged on the switch base, a sliding rail for the sliding block to slide is arranged on the supporting base, and the elastic reset piece is arranged between the sliding block and the supporting base.

Preferably, a buffer is disposed at one end of the push rod facing the switch base.

A car door lock device comprises a door knife mechanism and a door lock mechanism, wherein the door knife mechanism is arranged on an upper threshold of a car door and can provide a transverse driving force; the door lock mechanism comprises a mechanical lock assembly and the anti-abrasion electric lock;

the mechanical lock assembly comprises a lock hook arranged on the door vane mechanism and a lock seat arranged on the car door sill and matched with the lock hook in a locking way; the conductive contact part and the push rod are arranged on the door knife mechanism, and the mounting seat assembly is arranged on the upper sill of the car door.

Preferably, the gate knife mechanism further comprises a bottom plate capable of moving transversely along the car door upper sill, a plurality of first rotating arms arranged on the bottom plate in a swinging mode and a first swing rod rotatably connected and arranged on the first rotating arms, and the first swing rod is matched with the landing door moving roller and can move transversely under the driving of the landing door moving roller;

the lock hook can be arranged on the bottom plate in a swinging mode, and the first swing rod can transversely move to be abutted against the lock hook so as to drive the lock hook to swing.

Preferably, the bottom plate is further provided with a plurality of second rotating arms in a swinging manner and a second swing rod rotatably connected and arranged on the second rotating arms, and the second swing rod is matched with the landing door static roller and can transversely move under the driving of the landing door static roller;

and a connecting rod is arranged on the second oscillating bar and connected with the lock hook to drive the lock hook to perform oscillating motion.

Preferably, an elastic pressing piece is further arranged corresponding to the lock hook, one end of the elastic pressing piece is arranged on the bottom plate, and the other end of the elastic pressing piece is connected with the lock hook and abuts against the lock hook.

Preferably, the door lock mechanism further comprises a pulling piece capable of independently controlling the swinging motion of the lock hook, one end of the pulling piece is connected to the lock hook, and the other end of the pulling piece is a free end.

An elevator, including above-mentioned sedan-chair door lock device.

Compared with the prior art, the invention has the beneficial effects that:

the utility model provides an in this scheme ingeniously be provided with synchronous lateral shifting's push rod to electrically conductive contact site, make electrically conductive contact site carry out the electrical property after being driven and when under the state that the electrical property switched on with the switch body, the push rod can synchronous motion to the sliding motion of promotion switch seat on the supporting seat, thereby make electrically conductive contact site and switch body be in the synchronous motion state, contact wear that causes when avoiding electrically conductive contact site to be in lateral shifting in the traditional art and the switch body is in quiescent condition, thereby improved the whole protection to electric lock contact member effectively, under the prerequisite that satisfies structural design requirement, prolong electric lock device's life effectively, make electric lock's use more reliable.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic view of an installation structure of the car door lock device of the present invention.

FIG. 2 is a schematic diagram of a door lock mechanism according to the present invention.

FIG. 3 is a schematic view of the anti-wear electric lock of the present invention

Fig. 4 is a schematic side view of the door lock mechanism according to the present invention in a locked state.

Fig. 5 is a schematic view of a mounting structure of a slider according to another embodiment of the present invention.

Fig. 6 is a schematic diagram illustrating an operation structure of a conductive contact and a passive contact according to another embodiment of the present invention.

Wherein:

1-anti-abrasion electric lock, 11-conductive contact part, 12-push rod, 121-buffer part, 13-mounting seat component, 131-switch seat, 1311-slide block, 132-support seat, 1321-slide rail, 133-switch body, 1331-passive contact part, 1332-cable and 14-elastic reset component;

2-car door upper sill, 21-lock hook, 211-pressing roller, 212-elastic pressing piece, 22-lock seat, 23-motor, 231-belt, 232-tension device, 24-connecting plate, 25-right door hanger plate, 251-right door plate, 26-left door hanger plate, 261-left door plate, 27-bottom plate, 271-first rotating arm, 272-first swinging rod, 273-second rotating arm, 274-second swinging rod, 2741-connecting rod and 28-pulling piece;

3-layer door moving roller and 4-layer door static roller.

Detailed Description

So that the manner in which the above recited objects, features and advantages of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to the embodiments thereof which are illustrated in the appended drawings. In addition, the embodiments and features of the embodiments of the present application may be combined with each other without conflict. In the following description, numerous specific details are set forth to provide a thorough understanding of the present invention, and the described embodiments are merely a subset of the embodiments of the present invention, rather than a complete embodiment. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

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 invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Example 1

As shown in fig. 1 to 6, the present embodiment provides an anti-wear electric lock 1, which includes a conductive contact portion 11, a push rod 12 moving laterally in synchronization with the conductive contact portion 11, and a mounting seat assembly 13; the mounting base assembly 13 includes a switch base 131 and a supporting base 132, the supporting base 132 is fixedly disposed, the switch base 131 is slidably disposed on the supporting base 132, a switch body 133 electrically connected to the conductive contact portion 11 is correspondingly disposed on the switch base 131, and the switch body 133 moves synchronously with the sliding of the switch base 131 on the supporting base 132.

Further, a passive contact portion 1331 is provided in the switch body 133, and the passive contact portion 1331 is electrically connected to a cable 1332. Preferably, the conductive contact portion 11 may be configured as a conductive contact, and the passive contact portion 1331 may be configured as a conductive spring, and the conductive spring is deformed by the conductive contact moving to abut against the conductive spring, so as to complete the connection and transmission of the electrical signal. In an actual application process, referring to fig. 6, the conductive contact portion 11 may also be set to be a planar structure, and the conductive spring piece with a protruding structure is correspondingly set to be a passive contact portion 1331, so that the conductive spring piece with a protruding structure is electrically connected through abutting contact between the conductive spring piece and the passive contact portion, and further an electrical signal is transmitted, thereby implementing an electrical lock function.

In addition, the push rod 12 can move along with the lateral movement of the conductive contact portion 11 to abut against the switch seat 131, an elastic restoring member 14 is disposed between the switch seat 131 and the supporting seat 132, and the push rod 12 overcomes the elastic force of the elastic restoring member 14 to perform work when abutting against the switch seat 131.

Specifically, in this embodiment, a sliding block 1311 is disposed on the switch seat 131, a sliding rail 1321 for the sliding block 1311 to slide is disposed on the supporting seat 132, and the elastic restoring member 14 is disposed between the sliding block 1311 and the supporting seat 132. In practical applications, as shown in fig. 5, the matching sliding structure of the sliding block 1311 and the sliding rail 1321 may also be configured as a structure of a guide rail and a guide shoe, at this time, the cross section of the sliding rail 1321 may be a circular, square or dovetail structure, and the sliding block 1311 is correspondingly configured as a circular, square, dovetail or ball sliding sleeve; in addition, the number of the sliding block 1311 and the sliding rail 1321 may be one or more; the specific configuration is not described herein.

Furthermore, the elastic restoring element 14 is provided as a spring, which is arranged on the side of the sliding block 1311 facing away from the push rod 12; in this embodiment, the spring is serially arranged on the sliding rail 1321, and when the push rod 12 pushes the switch seat 131, the sliding block 1311 compresses the spring. In addition, as another alternative, the elastic restoring element 14 may also be configured as a tension spring, and the tension spring should be disposed on the same side of the sliding block 1311 as the push rod 12, and when the push rod 12 pushes the switch seat 131, the sliding block 1311 stretches the tension spring. Based on this, the reset operation of the sliding block 1311 on the supporting seat 132 can be effectively realized.

Preferably, a buffer member 121, such as rubber, is further disposed at an end of the push rod 12 facing the switch seat 131 to improve protection of the push rod 12 and the switch seat 131 during use.

In order to further understand the scheme, the present embodiment further provides a car door lock device, which mainly includes a door knife mechanism and a door lock mechanism. The door knife mechanism is arranged on the car door upper threshold 2 and can provide transverse driving force; the door lock mechanism comprises a mechanical lock assembly and the anti-abrasion electric lock 1; the mechanical lock assembly comprises a lock hook 21 arranged on the door vane mechanism and a lock seat 22 arranged on the car door upper sill 2 and matched with the lock hook 21 in a locking way; the conductive contact part 11 and the push rod 12 are arranged on the door vane mechanism, and the mounting seat assembly 13 is arranged on the car door upper sill 2. In this embodiment, the conductive contact portion 11 is disposed on the lock hook 21, and through the locking motion between the lock hook 21 and the lock seat 22, the conductive contact portion 11 and the passive contact portion 1331 are electrically conducted, so as to realize the linkage action between the mechanical lock and the electrical lock.

Specifically, the car door sill 2 is provided with a motor 23, a belt 231, a tensioner 232, a connecting plate 24, a right hanger plate 25, a left hanger plate 26, and the like in advance. The tensioning device 232 is used for tensioning the belt 231 so that the belt 231 does not loosen and slip. The motor 23 drives the belt 231 to rotate and drive the connecting plate 24 to move, and since the right door hanging plate 25 and the left door hanging plate 26 are both connected with the belt 231 through the respective connecting plates, the right door panel 251 connected with the right door hanging plate 25 and the left door panel 261 connected with the left door hanging plate 26 can synchronously move towards two sides to complete the opening action of the car door. As an example, since the vane mechanism is fixed to the left door hanger plate 26 by bolts, it can move in synchronization and provide a lateral driving force. In addition, still be provided with the guide rail on the bank 2 on the sedan-chair door, the door sword mechanism can follow the predetermined route steady movement of guide rail to improve the reliability and the precision that the sedan-chair door was opened, specific setting can refer to prior art, and the here is not repeated.

Further, the door vane mechanism further comprises a bottom plate 27 capable of moving transversely along the car door sill 2, a plurality of first rotating arms 271 capable of being arranged on the bottom plate 27 in a swinging manner, and a first swing link 272 capable of being rotatably connected with the first rotating arms 271, wherein the first swing link 272 is matched with the landing door moving roller 3 and can move transversely under the driving of the landing door moving roller 3; the lock hook 21 is swingably disposed on the bottom plate 27, and the first swing link 272 can laterally move to abut against the lock hook 21 to drive the lock hook 21 to swing. In this embodiment, the bottom plate 27 is fixedly disposed on the left door hanger 26 to achieve synchronous lateral movement with the left door plate 261; in addition, as a preferable scheme, two first swing arms 271 are arranged along the same vertical line, and the first swing link 272 is simultaneously connected to each first swing arm 271, so that the lateral movement of the first swing link 272 can be more stable. In addition, in the present embodiment, a pressing roller 211 is further disposed on the lock hook 21 corresponding to the first swing link 272, so that the first swing link 272 and the lock hook 21 are more harmonious in contact.

Furthermore, a plurality of second rotating arms 273 are further swingably provided on the bottom plate 27, and a second swing link 274 is rotatably connected to the second rotating arms 273, the second swing link 274 is provided in cooperation with the landing door static roller 4 and can move laterally under the driving of the landing door static roller 4; a connecting rod 2741 is arranged on the second swing link 274, and the connecting rod 2741 is connected with the locking hook 21 to drive the locking hook 21 to swing; specifically, in this embodiment, a through slot is disposed on the connecting rod 2741, the locking hook 21 partially extends into the through slot, and when the locking hook 21 rotates, a corresponding space is reserved between a left end slot wall of the through slot and the locking hook 21; when the second swing link 274 moves leftward, the locking hook 21 abuts against a wall of the right end of the through slot, so as to drive the locking hook 21 to swing. Preferably, two second rotating arms 273 are also arranged along the same vertical line, and the second swinging rods 274 are simultaneously connected to each second rotating arm 273, so that the lateral movement of the second swinging rods 274 can be more smooth. In this embodiment, the first swing link 272 and the second swing link 274 are disposed at an interval, and the landing door moving roller 3 and the landing door static roller 4 are disposed between the first swing link 272 and the second swing link 274.

As a preferable scheme, an elastic pressing member 212 is further disposed corresponding to the locking hook 21, one end of the elastic pressing member 212 is disposed on the bottom plate 27, and the other end of the elastic pressing member 212 is connected to the locking hook 21 and abuts against the locking hook 21. When the car door is completely closed, the car door lock device is in a locked state, at the moment, the lock hook 21 is in a horizontal posture under the action of the elastic pressing piece 212 and the self gravity, and the lock hook 21 is buckled with the lock seat 22 to realize mechanical locking. At this time, an engaging gap a is set between the front end of the latch hook 21 and the latch seat 22, the switch body 133 and the switch seat 131 compress the elastic reset element 14 under the action of the push rod 12, a gap B is set between the slider 1311 and the support seat 132, and the conductive contact portion 11 is in contact with the passive contact portion 1331 and electrically conducted. At this time, a transverse gap T1 exists between the first swing link 272 and the landing door moving roller 3, and a transverse gap T2 exists between the landing door static roller 4 and the landing door moving roller 3.

When the elevator is on the flat floor, the process of driving the car door to open the door by the motor is as follows:

during normal operation, the elevator car enters a leveling zone, the landing door static roller 4 and the landing door movable roller 3 on the landing door side respectively enter a first swing rod 272 area and a second swing rod 274 area of the door vane mechanism, and B is T1 < A. The motor 23 drives the belt 231 to rotate, so that the left door hanging plate 26 opens the door leftwards, and the left door hanging plate 26 can synchronously drive the door knife mechanism fixed thereon to move leftwards. During the leftward movement, the latch hook 21 does not rotate, and the switch body 133 moves laterally leftward together with the conductive contact portion 11 under the action of the elastic restoring member 14, so as to keep the mechanical latch engaged and the electrical latch latched. Then, the first swing link 272 gradually touches the landing door roller 3, causing the lock hook 21 to lift up and disengage from the lock seat 22, so as to achieve mechanical unlocking and electrical unlocking, where T1 is T2 is 0, B is greater than 0, and a is a negative value. In the process, the reaction force of the first swing rod 272 enables the layer door moving roller 3 to move towards the layer door static roller 4, the layer door lock is unlocked at the moment, the car door lock and the layer door lock are unlocked simultaneously, and finally the car door drives the layer door to be completely opened.

The car door performs the opposite action steps according to the process when the car door is closed, and the difference lies in that: after the latch hook 21 rotates and returns to the horizontal state, the conductive contact portion 11 abuts against the passive contact portion 1331, the push rod 12 on the door vane mechanism abuts against the switch seat 131, and along with the door closing process, the push rod 12 pushes the switch body 133 and the latch hook 21 to move rightwards together until the door is completely closed. In the door closing state, the motor 23 waits for outputting a door closing torque, the door closing torque is transmitted to the door vane mechanism through the belt 231, the push rod 12 on the door vane mechanism maintains a force on the switch seat 131 with respect to the door, and at this time, the electric lock is always in the on state.

When the elevator car enters a flat zone and the elevator is suddenly interrupted or the motor is damaged, passengers in the car door cannot save themselves and need to rescue from the outside of the hall. At this moment, the landing door moving roller 3 and the landing door static roller 4 on the side of the landing door respectively enter a second swing rod 274 working area and a first swing rod 272 working area of the door vane mechanism, a rescuer opens the landing door by using a triangular key outside a hall, so that the landing door moving roller 3 and the landing door static roller 4 can move leftwards, the landing door static roller 4 impacts the second swing rod 274 in the motion process, the second swing rod 274 rotates through the second rotating arm 273, and meanwhile, the connecting rod 2741 is synchronously driven to overturn so as to pull the locking hook 21 to swing and lift. In this process, the conductive contact portion 11 and the passive contact portion 1331 are separated from each other, and the electrical unlocking and the mechanical unlocking are performed in synchronization.

In addition, the door lock mechanism is further provided with a pulling piece 28 which can independently control the swinging motion of the lock hook 21, one end of the pulling piece 28 is connected to the lock hook 21, and the other end of the pulling piece 28 is a free end. When the elevator is in an accident, such as power failure or other faults, and needs to be rescued outside a hall on a non-flat layer to open the door, personnel in the car can not open the car door by self due to the existence of the car door lock, so that the elevator needs to be rescued and opened outside the hall. When the layer is not flat, the layer door moving roller 3 and the layer door static roller 4 do not exist in the working areas of the second swing rod 274 and the first swing rod 272 of the door knife mechanism, so that the first swing rod 272 and the second swing rod 274 cannot be directly driven like the two working conditions. Therefore, at this time, the landing door needs to be opened by a triangular key dedicated to the elevator, and then the pulling member 28 is pulled to drive the locking hook 21 to rotate, so that the locking hook 21 can be separated from the lock seat 22, and meanwhile, the conductive contact part 11 and the passive contact part 1331 are separated from each other, and the mechanical unlocking and the electrical unlocking are performed synchronously. So for this technical scheme's sedan-chair door lock device can adapt to more different emergency, guarantees that the elevator sedan-chair door still can open smoothly under the extreme condition, has promoted the fail safe nature that the elevator took. Alternatively, the pull member 28 may be provided as a pull cord, a pull cable, or the like.

In addition, thanks to the above design, the present embodiment also provides an elevator, which is provided with the above car door lock device, and the use of the elevator is safer and more reliable. Specifically, the door vane mechanism is connected to a drive mechanism provided in advance on the car door sill 2, so that a lateral drive force can be provided. In order to ensure the safe and reliable door opening operation of the elevator car, the lock hook 21 can move a small distance along the transverse direction along with the door knife mechanism before being lifted, in the process, the anti-abrasion electric lock 1 can move transversely with the door knife mechanism, but because the conductive contact part 11 and the switch body 133 move together, mutual sliding friction cannot exist between the conductive contact part 11 and the passive contact part 1331 in the moving process, so that the damage such as extrusion deformation and scratch cannot occur between the conductive contact part 11 and the passive contact part 1331, the reliability of the electric contact between the conductive contact part 11 and the passive contact part 1331 can be ensured, and the service life and the performance of the car door lock device are improved.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, so that any modification, equivalent change and modification made to the above embodiment according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.

Claims

1. An anti-abrasion electric lock is characterized by comprising a conductive contact part, a push rod and a mounting seat assembly, wherein the push rod synchronously and transversely moves with the conductive contact part;

2. The electrical lock of claim 1, wherein a passive contact portion is provided in the switch body, and the passive contact portion is electrically connected to a cable.

3. The electrical lock of claim 1 or 2, wherein the switch seat is provided with a sliding block, the supporting seat is provided with a sliding rail for the sliding block to slide, and the elastic restoring member is disposed between the sliding block and the supporting seat.

4. The electrical lock of claim 3, wherein the push rod is provided with a buffer at an end facing the switch housing.

5. A car door lock device is characterized by comprising a door knife mechanism and a door lock mechanism, wherein the door knife mechanism is arranged on an upper threshold of a car door and can provide a transverse driving force; the door lock mechanism comprises a mechanical lock assembly and an electrical wear resistant lock as claimed in any one of claims 1 to 4;

6. The car door lock device according to claim 5, wherein the door vane mechanism further comprises a base plate capable of moving laterally along the upper sill of the car door, a plurality of first swing arms swingably provided on the base plate, and a first swing link rotatably connected to the first swing arms, the first swing link being provided in cooperation with the landing door moving roller and being capable of moving laterally under the driving of the landing door moving roller;

7. The car door lock device as claimed in claim 6, wherein the bottom plate is further swingably provided with a plurality of second swing arms and a second swing link rotatably connected to the second swing arms, the second swing link being engaged with the landing door static roller and being driven by the landing door static roller to move laterally;

8. The car door lock device according to claim 6 or 7, wherein an elastic pressing member is further provided corresponding to the lock hook, one end of the elastic pressing member is provided on the bottom plate, and the other end of the elastic pressing member is connected to and abuts against the lock hook.

9. The door latch mechanism of claim 5, further comprising a pull member for independently controlling the swinging movement of said latch hook, wherein one end of said pull member is connected to said latch hook and the other end of said pull member is a free end.

10. An elevator characterized by comprising a car door lock device according to any one of claims 5 to 9.