Self-locking device for elevator car door

Abstract

The utility model provides an elevator car door self-locking device which comprises a door lock assembly, and the door lock assembly comprises a first connecting block, a spring, a locking block, a driving motor, a winding roller, a steel wire rope, a second connecting block, a first bevel gear, a threaded rod, a second bevel gear and a connecting rod. Springs are symmetrically and fixedly connected to the inner side wall of the first connecting block, locking blocks are fixedly connected to the tops of the springs, and a driving motor is installed in the first connecting block. The lifting plate moves to drive the connecting block to move, the car door is automatically locked through matching of the locking block and the clamping groove, and casualty accidents caused by forcibly opening the car door by a user are prevented. The bevel gear is driven to rotate by rotating the connecting rod, the threaded rod is driven to rotate through cooperation of the bevel gear, the second connecting block is driven to move upwards, the door lock can be opened from the outside in the state that the car door is locked, and rescuers can conveniently enter an elevator to complete rescue work.

Description

TECHNICAL FIELD

[0001] The utility model relates to a door lock device, in particular to an elevator car door self-locking device, belongs to car door lock technical field. BACKGROUND

[0002] Car door lock is a kind of electromechanical interlock safety device, which is locked after car door is closed, and control loop is connected at the same time, so that car can run. The main purpose of its setting is to prevent people from falling into shaft and causing injury accident by prying open car door from car.

[0003] After power failure, elevator will be safely stopped on the track by brake, and door lock will also be automatically locked, to prevent passengers from prying open car door from car and falling into shaft, causing injury accident. However, this safety mechanism may become an obstacle to rescue in emergency. When emergency occurs in elevator and rescue personnel need to enter elevator for rescue, due to the locking mechanism of door lock, rescue personnel cannot quickly open car door, and can only forcibly destroy door lock by using professional tool, which affects rescue efficiency and delays rescue time. Therefore, an elevator car door self-locking device is provided. SUMMARY

[0004] Therefore, the utility model provides an elevator car door self-locking device to solve or alleviate one of the technical problems in the prior art, at least to provide a beneficial choice.

[0005] The technical scheme of the utility model embodiment is implemented as follows: an elevator car door self-locking device, comprising a door lock assembly, the door lock assembly comprising a first connecting block, a spring, a lock block, a drive motor, a winding roller, a steel wire rope, a second connecting block, a first bevel gear, a threaded rod, a second bevel gear and a connecting rod.

[0006] The inner side wall of the first connecting block is fixedly connected with the spring in a symmetrical manner, the top of the spring is fixedly connected with the lock block, the first connecting block is internally provided with the drive motor, the output shaft of the drive motor is fixedly connected with one end of the winding roller, the outer side wall of the winding roller is wound with the steel wire rope, one end of the steel wire rope is fixedly connected with the lock block, the inner side wall of the first bevel gear is fixedly connected with the threaded rod, the outer side wall of the threaded rod is threadedly connected with the second connecting block, the first bevel gear is engaged with the second bevel gear, and the rear surface of the second bevel gear is fixedly connected with the connecting rod.

[0007] Further preferably, the door lock assembly is externally provided with a driving assembly, and the driving assembly comprises a support plate, a driver and a driving motor.

[0008] The rear surface of the support plate is provided with the driver and the driving motor.

[0009] Further preferably, the front surface of the support plate is rotationally connected with a first driving wheel and a transmission wheel.

[0010] Further preferably, the output shaft of the driving motor is fixedly connected with the first driving wheel.

[0011] Further preferably, the outer side wall of the first driving wheel and the transmission wheel is sleeved with a transmission belt.

[0012] Further preferably, the front surface of the transmission wheel is fixedly connected with a second driving wheel, and the front surface of the support plate is rotationally connected with a driven wheel.

[0013] Further preferably, the outer side wall of the driven wheel and the second driving wheel is sleeved with a synchronous belt, two connecting plates are fixedly connected on the synchronous belt, the bottom of the connecting plate is fixedly connected with a hanging plate, and the bottom of the hanging plate is fixedly connected with a door plate.

[0014] Further preferably, the first connecting block is fixedly connected on the top of the hanging plate, the second connecting block is slidingly connected on the inner side wall of the hanging plate, the first bevel gear and the second bevel gear are rotationally connected on the inner side wall of the hanging plate, a through slot is formed on the support plate and the hanging plate, and one end of the connecting rod extends to the outside through the rear surface of the hanging plate and the support plate.

[0015] The embodiment of the utility model has the following advantages due to the adoption of the above technical scheme:

[0016] Firstly, the utility model discloses a hanging plate moving to drive the connecting block to move, and the lock block and the clamping groove are matched to automatically lock the car door, preventing the user from forcibly opening the car door to cause an accident.

[0017] Secondly, the utility model discloses a rotating connecting rod to drive the bevel gear to rotate, and the bevel gear is matched to make the threaded rod rotate, drive the second connecting block to move upwards, and the door lock can be opened from the outside in the state that the car door is locked, so that the rescuer can enter the inside of the elevator to complete the rescue work.

[0018] The above summary is only for the purpose of the description and is not intended to limit in any way. In addition to the above-described illustrative aspects, embodiments, and features, further aspects, embodiments, and features of the utility model will be readily apparent from the drawings and detailed description below. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments or the prior art in the present application, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without any creative labor.

[0020] Figure 1 The utility model discloses a structural diagram;

[0021] Figure 2 The utility model discloses a support plate structural diagram;

[0022] Figure 3 The utility model discloses a connecting block structural diagram;

[0023] Figure 4 The utility model discloses a connecting block internal structure diagram.

[0024] Fig. 10, drive assembly;11, support plate;12, driver;13, drive motor;14, first driving wheel;15, transmission belt;16, transmission wheel;17, second driving wheel;18, synchronous belt;19, driven wheel;110, connecting plate;111, hanging plate;112, door plate;20, door lock assembly;21, first connecting block;22, spring;23, lock block;24, drive motor;25, winding roller;26, steel wire rope;27, second connecting block;28, first bevel gear;29, threaded rod;210, second bevel gear;211, connecting rod;212, clamping groove. DETAILED DESCRIPTION

[0025] Hereinafter, only certain exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the utility model. Therefore, the drawings and the description are considered to be exemplary in nature rather than limiting.

[0026] The embodiments of the utility model will be described in detail below with reference to the drawings.

[0027] As Figures 1-4 Indicated, the utility model embodiment provides a kind of elevator car door self-locking device, including door lock assembly 20, door lock assembly 20 includes first connecting block 21, spring 22, lock block 23, drive motor 24, winding roller 25, steel wire rope 26, second connecting block 27, first bevel gear 28, threaded rod 29, second bevel gear 210, connecting rod 211 and clamping groove 212;

[0028] The inner side wall of the first connecting block 21 is symmetrically fixedly connected with a spring 22, the top of the spring 22 is fixedly connected with a lock block 23, the inside of the first connecting block 21 is provided with a driving motor 24, the output shaft of the driving motor 24 is fixedly connected with one end of a winding roller 25, the outer side wall of the winding roller 25 is wound with a steel wire rope 26, one end of the steel wire rope 26 is fixedly connected with the lock block 23, the inner side wall of the first bevel gear 28 is fixedly connected with a threaded rod 29, the outer side wall of the threaded rod 29 is threadedly connected with a second connecting block 27, the inner side wall of the second connecting block 27 is provided with a clamping groove 212, the first bevel gear 28 is engaged with a second bevel gear 210, the rear surface of the second bevel gear 210 is fixedly connected with a connecting rod 211, after the door is closed, the first connecting block 21 moves to below the second connecting block 27, the lock block 23 enters the inside of the clamping groove 212 under the action of the spring 22, the car door is automatically locked, preventing the user from forcibly opening the car door to cause an accident, a hexagonal groove is formed in one end of the connecting rod 211, the connecting rod 211 is rotated by using a wrench to drive the second bevel gear 210 to rotate, the threaded rod 29 is rotated by using the cooperation of the two bevel gears, the second connecting block 27 is driven to move upward, and the lock block 23 exits from the inside of the clamping groove 212, so that the door lock can be opened from the outside in the state that the car door is locked.

[0029] In this embodiment, specifically, the door lock assembly 20 is provided with a driving assembly 10 outside, the driving assembly 10 comprises a supporting plate 11, a driver 12 and a driving motor 13.

[0030] The rear surface of the supporting plate 11 is provided with the driver 12 and the driving motor 13, and the driver 12 is used for controlling the working state of the driving motor 13.

[0031] In this embodiment, specifically, the front surface of the supporting plate 11 is rotatably connected with a first driving wheel 14 and a transmission wheel 16.

[0032] In this embodiment, specifically, the output shaft of the driving motor 13 is fixedly connected with the first driving wheel 14, and the driving motor 13 drives the first driving wheel 14 to rotate.

[0033] In this embodiment, specifically, the outer side walls of the first driving wheel 14 and the transmission wheel 16 are sleeved with a transmission belt 15, and the first driving wheel 14 and the transmission wheel 16 are simultaneously rotated by transmission of the transmission belt 15.

[0034] In this embodiment, specifically, the front surface of the transmission wheel 16 is fixedly connected with a second driving wheel 17, the front surface of the supporting plate 11 is rotatably connected with a driven wheel 19, and the transmission wheel 16 and the second driving wheel 17 are rotated to drive a synchronous belt 18 to move two connecting plates 110.

[0035] In the embodiment, specifically: the outer side wall of the driven wheel 19 and the second driving wheel 17 is sleeved with the synchronous belt 18, the synchronous belt 18 is fixedly connected with two connecting plates 110, the bottom of the connecting plate 110 is fixedly connected with a hanging plate 111, the bottom of the hanging plate 111 is fixedly connected with a door plate 112, the connecting plate 110 moves to drive the hanging plate 111 and the door plate 112 to move.

[0036] In the embodiment, specifically: the first connecting block 21 is fixedly connected to the top of the hanging plate 111, the second connecting block 27 is slidingly connected to the inner side wall of the hanging plate 111, the first bevel gear 28 and the second bevel gear 210 are rotatably connected to the inner side wall of the hanging plate 111, the support plate 11 and the hanging plate 111 are provided with a through slot, one end of the connecting rod 211 extends to the outside through the rear surface of the hanging plate 111 and the support plate 11, and a hexagonal recess is formed in one end of the connecting rod 211.

[0037] The utility model discloses a door lock device for elevator, including drive motor 13, first driving wheel 14, transmission belt 15, transmission wheel 16, second driving wheel 17, synchronous belt 18, two connecting plates 110, hanging plate 111, door plate 112, first connecting block 21, second connecting block 27, first bevel gear 28, second bevel gear 210, support plate 11, connecting rod 211, spring 22, lock block 23 and threaded rod 29.

[0038] The above, just for the specific implementation of the utility model, but the protection scope of the utility model does not limit to this, any familiar with the technical field of the technical personnel can easily think of its various changes or replacement in the utility model discloses the technical range, these all should cover in the protection range of the utility model. Therefore, the protection scope of the utility model should be accurate with the protection scope of the claim.

Claims

1. An elevator car door self-locking device comprising a door lock assembly (20), characterized by: The door lock assembly (20) comprises a first connecting block (21), a spring (22), a lock block (23), a drive motor (24), a winding roller (25), a steel wire rope (26), a second connecting block (27), a first bevel gear (28), a threaded rod (29), a second bevel gear (210), a connecting rod (211) and a clamping groove (212); The inner side wall of the first connecting block (21) is fixedly connected with the spring (22) in a symmetrical manner, the top of the spring (22) is fixedly connected with the lock block (23), the inside of the first connecting block (21) is provided with the drive motor (24), one end of the output shaft of the drive motor (24) is fixedly connected with the winding roller (25), the outer side wall of the winding roller (25) is wound with the steel wire rope (26), one end of the steel wire rope (26) is fixedly connected with the lock block (23), the inner side wall of the first bevel gear (28) is fixedly connected with the threaded rod (29), the outer side wall of the threaded rod (29) is threadedly connected with the second connecting block (27), the inner side wall of the second connecting block (27) is provided with the clamping groove (212), the first bevel gear (28) is engaged with the second bevel gear (210), and the rear surface of the second bevel gear (210) is fixedly connected with the connecting rod (211).

2. An elevator car door self-locking device according to claim 1, characterized in that: The door lock assembly (20) is provided with a drive assembly (10) outside, and the drive assembly (10) comprises a support plate (11), a driver (12) and a drive motor (13); The rear surface of the support plate (11) is provided with the driver (12) and the drive motor (13).

3. An elevator car door self-locking device according to claim 2, characterized in that: The front surface of the support plate (11) is rotatably connected with a first driving wheel (14) and a transmission wheel (16).

4. An elevator car door self-locking device according to claim 3, characterized in that: The output shaft of the drive motor (13) is fixedly connected with the first driving wheel (14).

5. An elevator car door self-locking device according to claim 4, characterized in that: The outer side walls of the first driving wheel (14) and the transmission wheel (16) are sleeved with a transmission belt (15).

6. An elevator car door self-locking device according to claim 5, characterized in that: The front surface of the transmission wheel (16) is fixedly connected with a second driving wheel (17), and the front surface of the support plate (11) is rotatably connected with a driven wheel (19).

7. An elevator car door self-locking device according to claim 6, characterized in that: The outer side walls of the driven wheel (19) and the second driving wheel (17) are sleeved with a synchronous belt (18), two connecting plates (110) are fixedly connected on the synchronous belt (18), a hanging plate (111) is fixedly connected to the bottom of the connecting plate (110), and a door plate (112) is fixedly connected to the bottom of the hanging plate (111).

8. An elevator car door self-locking device according to claim 2, characterized in that: The first connecting block (21) is fixedly connected to the top of the hanging plate (111), the second connecting block (27) is slidably connected to the inner side wall of the hanging plate (111), the first bevel gear (28) and the second bevel gear (210) are rotatably connected to the inner side wall of the hanging plate (111), and the support plate (11) and the hanging plate (111) are provided with a through groove, one end of the connecting rod (211) extends to the outside through the rear surfaces of the hanging plate (111) and the support plate (11).

Images