CN210594851U

CN210594851U - Elevator door lock structure

Info

Publication number: CN210594851U
Application number: CN201921104358.3U
Authority: CN
Inventors: 陈锡加; 曹国标; 漆凯飞; 熊亚同; 周鑫; 李金�
Original assignee: Shun Da Bo Nai Te Elevator Co ltd
Current assignee: Shun Da Bo Nai Te Elevator Co ltd
Priority date: 2019-07-15
Filing date: 2019-07-15
Publication date: 2020-05-22
Anticipated expiration: 2029-07-15

Abstract

The utility model discloses an elevator door lock structure, including base, door collude, hit wheel, spring, lock body, safety switch, touch panel, hit bow device and limit structure, the elevator is for moving the door structure perpendicularly, and the lock body of lock structure is articulated mutually with the base, can be rotatory around the fulcrum, and the rotation of lock body makes the lock open and lock. Therefore, the utility model discloses following beneficial effect has: (1) the locking condition of the door lock can be detected; (2) the structure is simple, safe and reliable; (3) the installation efficiency of elevator and the convenience of elevator routine maintenance have been improved.

Description

Elevator door lock structure

Technical Field

The utility model relates to a lock structure especially relates to an elevator door lock structure.

Background

An elevator door lock is a locking device (generally referred to as a landing door) of a car door and a landing door. Under normal conditions, the door can not be opened without using an unlocking device, and the person is protected from being cut or falling. Is an important safety device of an elevator.

For example, a chinese patent document discloses a "vertically openable landing door opening protection device", which is under the publication No. CN106986258B, and includes a door knife and a door stop lever mounted on a door assembly, and a landing door lock assembly mounted on the door assembly; the landing door assembly is provided with an up-down opening-closing type clamping assembly. The up-down opening-closing type clamping component mainly comprises a first clamping part and a second clamping part: the first clamping part mainly comprises a first base, a first clamping jaw, a first spring, a first roller and a manual unlocking piece; the second clamping part mainly comprises a second base, a second clamping jaw, a second spring, a second roller and a limiting column.

This patent does not design the safety circuit and detects whether the lock is locked, and the structure is comparatively complicated, and the door colludes thinly, and the reliability is slightly not enough.

SUMMERY OF THE UTILITY MODEL

The utility model relates to an overcome the problem whether locking of prior art's unable detection lock, provide an elevator door lock structure, be equipped with the safety circuit and detect the lock locking condition, simple structure, the good reliability.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an elevator door lock structure comprises a base, a door hook, a collision wheel, a spring, a lock body, a safety switch, a touch plate and a collision bow device, wherein the elevator is of a vertical sliding door structure, a limiting structure is arranged between the base and the lock body, and the limiting structure is positioned below the hinged part of the base and the lock body. The contact part of the safety switch is hemispherical, the contact surface of the door hook and the safety switch is an inclined plane, and the contact part is provided with a round angle. The base of the door lock structure is fixed on a hall door frame, and the lock body is connected with the base, can rotate around a fulcrum and is limited by a limiting structure to rotate at an angle. The collision wheel and the safety switch are fixed on the lock body. The door hook is connected with the touch plate, is fixed on the upper door plate of the hall door and can move up and down along with the upper door plate.

Preferably, the base is fixed on the door frame, is hinged with the lock body, and takes the hinged part as a fulcrum, and the lock body forms a lever structure. The lock body can rotate around the fulcrum, and force is applied to the lock body, so that the aim of controlling the door lock by controlling the rotation of the lock body is fulfilled.

Preferably, limit structure includes: the surface of the base is provided with an arc-shaped groove, and the corresponding part of the lock body is provided with a cylindrical bulge matched with the arc-shaped groove. The arc center angle of the arc-shaped groove is designed to be the arc center angle required by the rotation of the lock body around the fulcrum, so that the door lock cannot be damaged or dislocated due to the fact that the lock body is not too large in angle when the lock body rotates.

Preferably, the collision wheel and the safety switch are fixed on the lock body, the left side of the lock body is connected with the spring, and the spring is in a compressed state. At ordinary times, the lock body has the tendency of clockwise rotation under the action of the spring, so that the head of the lock body can be buckled on the door hook and is not easy to fall off.

Preferably, the safety switch is provided with a hemispherical contact piece, and a safety loop is arranged in the safety switch. Compared with the common contact piece, the hemispherical contact piece can reduce the deformation probability under long-term impact, and the contact surface is larger, thereby being beneficial to circuit conduction. The contact of the safety switch with the touch plate activates a safety loop, so that the locking of the door lock can be detected.

Preferably, the door hook and the touch panel are fixed on the upper door plate, and the touch panel is provided with a hemispherical groove. The hemispherical groove is matched with the hemispherical contact piece on the safety switch, the contact surface is large, and the safety switch can avoid the problem that some parts of the contact piece are rusted and can not conduct current.

Preferably, the lower end of the door hook is provided with an inclined plane and a round angle which are matched with the lower end of the safety switch. The lock body keeps the door hook to be fastened through the spring, and even under the condition that the spring fails, due to the structural design of the lock body, the lock body cannot be unlocked under the action of gravity. When the impact force of the impact bow device and the impact wheel is small, the rotation angle of the lock body is reduced, the inclined plane of the lock body and the inclined plane of the door hook cannot be completely separated, and the lock body and the door hook are separated by gravity due to the design of the round angle.

Therefore, the utility model discloses following beneficial effect has: (1) the locking condition of the door lock can be detected; (2) the structure is simple, safe and reliable; (3) the installation efficiency of elevator and the convenience of elevator routine maintenance have been improved.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of a partial structure of the present invention.

1-base, 2-door hook, 3-collision wheel, 4-spring, 5-lock body, 6-safety switch, 7-touch plate, 8-bow collision device and 9-limit structure.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description.

Example (b):

in the embodiment shown in fig. 1 and 2, an elevator door lock structure includes a base 1, a door hook 2, a striker 3, a spring 4, a lock body 5, a safety switch 6, a touch plate 7, a pantograph device 8 and a limit structure 9. The base 1 is fixed on the door frame and is hinged with the lock body 5, the hinged part is positioned at the lower part of the lock body, and the lock body 5 and the base 1 can rotate relatively. The lower end of the base is provided with a section of arc-shaped groove which takes the hinged part as the center of a circle, and the arc center angle is designed to be the angle of the lock body 5 required to rotate. A cylindrical protrusion is arranged at the position of the lock body 5 corresponding to the arc-shaped groove and can slide in the arc-shaped groove. When the lock body 5 is locked, the cylindrical bulge is positioned at the lowest end of the arc-shaped groove; when the lock body 5 is loosened, the cylindrical protrusion is positioned at the uppermost end of the circular arc-shaped groove. The lock body 5 is in a long strip shape and is vertically placed, the lower part of the lock body is a hinged part with the base 1, the left side of the middle part of the lock body is connected with the spring 4, and the right side of the middle part of the lock body is provided with the collision wheel 3 and the collision bow device 8. The spring 4 is in a compressed state giving the lock body 5 a force to the right. The upper end of the lock body 5 is hook-shaped and is matched with the door hook 2. The door hook 2 is fixed on the upper door plate, the lower end of the door hook 2 extends out of a section of volume, the contact part with the lock body 5 is an inclined plane, and the angle of the inclined plane is smaller than the arc center angle of the circular arc-shaped groove. When the spring 4 is invalid, the lock body 5 and the door hook 2 are still locked under the action of gravity and an inclined plane, so that accidents are avoided. The head parts of the contact parts of the lock body 5 and the door hook 2 are provided with round corners, and if the impact force of the bow hitting device is weaker during door opening, the lock body 5 and the door hook 2 can slide relatively to unlock by virtue of the design of the round corners. The upper end of the lock body 5 is provided with a safety switch 6 which is connected with a safety loop and used for detecting whether to lock or not. The door hook 2 is provided with a touch plate 7 which is fixed on the upper door plate, when the safety switch 6 rotates clockwise along with the lock body 5 and contacts with the touch plate 7, the safety loop is connected, and the door lock is known to be locked.

Under the locking state, the bump of the limiting structure 9 of the lock body 5 is positioned at the lowest end of the arc-shaped groove and cannot move downwards, so that the loss generated by the collision between the lock body 5 and the door hook 2 is reduced. When the elevator is opened, the impact bow device 8 pushes the impact wheel 3 to impact the lock body 5 away from the door hook 2, and the elevator door is unlocked; under the unlocking state, the lock body 5 is pushed rightwards by utilizing the elasticity of the spring 4, the lock body 5 is buckled with the door hook 2, the safety switch 6 is contacted with the touch plate 7, a safety loop is switched on, the locking of the elevator door is detected, and the elevator can normally run.

Claims

1. An elevator door lock structure comprises a base (1), a door hook (2), a collision wheel (3), a spring (4), a lock body (5), a safety switch (6), a touch plate (7) and a collision bow device (8), and is characterized in that the elevator is of a vertical door moving structure, a limiting structure (9) is arranged between the base (1) and the lock body (5), and the limiting structure (9) is located below the hinged position of the base (1) and the lock body (5).

2. The lock structure of elevator door according to claim 1, wherein the base (1) is fixed to the door frame and hinged to the lock body (5), and the lock body forms a lever structure with the hinged portion as a fulcrum.

3. Elevator door lock structure according to claim 1, characterized in that the limiting structure (9) comprises: the surface of the base (1) is provided with an arc-shaped groove, and the corresponding part of the lock body (5) is provided with a cylindrical bulge matched with the arc-shaped groove.

4. The elevator door lock structure according to claim 1, wherein the striker (3) and the safety switch (6) are fixed to the lock body (5), the left side of the lock body (5) is connected to the spring (4), and the spring (4) is in a compressed state.

5. Elevator door lock structure according to claim 1, characterized in that the safety switch (6) is provided with a hemispherical contact piece and a safety circuit is provided therein.

6. The lock structure for elevator door according to any one of claims 1 to 5, wherein the door hook (2) and the touch plate (7) are fixed to the upper door panel, and the touch plate (7) is provided with a hemispherical recess.

7. The lock structure of elevator door according to any one of claims 1 to 5, wherein the contact portion between the lock body (5) and the door hook (2) is provided with an inclined surface and a rounded corner, and the lower end of the door hook (2) is provided with an inclined surface and a rounded corner which are matched with the lower end of the safety switch (6).