CN201610675U

CN201610675U - Door lock for elevator

Info

Publication number: CN201610675U
Application number: CN2010201146703U
Authority: CN
Inventors: 史维国; 潘伦康
Original assignee: NINGBO QINZHOU OULING ELEVATOR COMPONENTS CO Ltd
Current assignee: Ningbo Ouling Elevator Components Co., Ltd.
Priority date: 2010-02-09
Filing date: 2010-02-09
Publication date: 2010-10-20
Anticipated expiration: 2020-02-09

Abstract

A door lock for an elevator comprises a lock box, a contact, a lower lock hook, an upper lock hook, a lower roller and a lock hook bottom plate, wherein the contact and the lower lock hook are arranged in the lock box; the upper lock hook is hooked with the lower lock hook correspondingly and tightly; the lower roller is arranged at one side of the tail end of the upper lock hook; the lock hook bottom plate is fixedly connected with a central axis at one side of the lower roller; one end of the central axis of the upper roller is fixed with the upper end of a vertical stand plate at the tail end of the upper lock hook; the lower end of the vertical stand plate is movably contacted with the central axis at one side of the lower roller; a torsion spring arranged on the central axis of the lower roller is arranged between the front end of the lock hook bottom plate and the tail end of the upper lock hook; the head end of the torsion spring is clamped and hung on the combining part of the upper lock hook and the vertical stand plate; and the tail end of the torsion spring is clamped and hung on the lock hook bottom plate. The door lock has the benefits of utilizing one torsion spring for replacing the original torsion spring, simultaneously reducing auxiliary parts when a compression spring is used previously, shortening the assembling time, saving production cost, and improving reliability.

Description

Door lock of elevator

Technical field

The utility model relates to a kind of blocking device of elevator door locking device, particularly a kind of elevator door.

Background technology

Door lock of elevator is installed in the layer door system of elevator, and elevator door is had locking effect; Realizing the unlatching and the closure of layer door simultaneously by being used of retiring cam in the door opening machine for elevator and door lock, is a kind of important elevator safety parts.

Existing door lock of elevator locking mechanism generally adopts the auxiliary force of gravity of latch hook own and stage clip for realizing the locking of layer door.As shown in Figure 4.Adopt the auxiliary mode of stage clip, stage clip also need have parts such as spring compressor, guide pin bushing, guide spiro rod, nut, limited block and fix, thereby used part is many, and the assembling trouble is more time-consuming, the cost of production height.

Summary of the invention

The utility model provides a kind of new door lock of elevator, adopts the auxiliary structure of torsion spring, and it is more to solve part, and the assembling trouble is more time-consuming, cost of production height, the problem of poor reliability.

Technical solution of the present utility model is: door lock of elevator, it comprises lock box, be located at contact and following latch hook in the lock box, correspondingly with following latch hook collude tight last latch hook, be located at the bottom roller of the terminal side of latch hook, latch hook base plate with bottom roller one side central axis Joint, upper roller central axis one end fixes with the terminal vertical riser of last latch hook upper end, the lower end of vertical riser contacts with bottom roller one side central axis is rotatable, it is characterized in that on the front end of latch hook base plate and the bottom roller central axis between the last latch hook end, establishing a torsion spring, the head end card of described torsion spring hangs over latch hook and vertical riser joint portion, and the end card of described torsion spring hangs on the latch hook base plate.

The beneficial effect of above-mentioned design is to replace original stage clip with a torsion spring, and the auxiliary component when reducing original use stage clip is simultaneously for example saved spring compressor, guide pin bushing, guide spiro rod, nut etc., and shortens installation time, saves production cost, and has improved reliability.

Description of drawings

Fig. 1 is the utility model locking state front view.

Fig. 2 is the A-A sectional view of Fig. 1.

Fig. 3 is the unlocking condition schematic diagram.

Fig. 4 is a kind of structure chart of prior art.

The specific embodiment

Be further described explanation below in conjunction with Fig. 1～3 pair the utility model.

Referring to illustrated in figures 1 and 2, lock box 1 is provided with down latch hook 3, the following contact of contact 2 is located in the lock box 1, the upper contact head of contact 2 is located at latch hook 4 front ends, colluding mouthful up of following latch hook 3, mouthful corresponding with colluding down of last latch hook 4, the rear end of last latch hook 4 is rotatably connected with the lower end of the vertical riser 8 of bottom roller 9 one sides.Central axis one end of upper roller 7 fixes with vertical riser 8 upper ends of last latch hook 4 ends, the lower end and the bottom roller 9 one side central axiss 11 of vertical riser 8 are rotatably connected, establish a torsion spring 6 on bottom roller 9 central axiss 11 between the front end of latch hook base plate 10 and last latch hook 4 ends, the head end card of torsion spring 6 hangs over the joint portion of latch hook 4 and vertical riser 8, and the end card of torsion spring 6 hangs over the back of latch hook base plate 10.Establish limited block 5 in last latch hook 4 middle lower portion and latch hook base plate 10 upper front end.Under the equal diameters condition of upper and

lower roller

7 and 9, the level interval of upper roller 7 central axiss and bottom roller 9 central axiss is 6～8mm, and present embodiment adopts 7mm.

Referring to shown in Figure 3, when opening, layer door move the upper and lower roller 7 of door lock and 9 by 12 contractions of retiring cam blade, latch hook 4 is lifted, last latch hook 4 is deviate from down, and latch hook 3 is opened layer door, the central axis of the central axis of upper roller 7 and bottom roller 9 was on same vertical line, to guarantee safety when Fig. 3 lifted for last latch hook 4.

When layer door is closed under the drive of door opening machine for elevator, retiring cam 12 is clamping the upper and lower roller 7 of door lock and 9 makes layer door begin to close, layer door closes when putting in place, retiring cam 12 begins to open, latch hook 4 is fallen last latch hook 4 and following latch hook 3 colludes tightly mutually, thus locking layer door.Fig. 1 is exactly the structure chart of layer door lock door lock of elevator when tight.

Fig. 4 is a kind of door lock of elevator structure chart of routine, and it is upper and

lower latch hook

4,3, upper and

lower roller

7,9, compositions such as latch hook base plate 10, contact 2, stage clip 15, spring compressor 17, guide pin bushing 16, guide spiro rod 13, nut 14, limited block 5.By relatively we find that the utility model door lock of elevator has reduced Assembly part, when having shortened the mounter, has reduced cost of production.

Claims

1. door lock of elevator, it comprises lock box, be located at contact and following latch hook in the lock box, correspondingly with following latch hook collude tight last latch hook, be located at the bottom roller of the terminal side of latch hook, latch hook base plate with bottom roller one side central axis Joint, upper roller central axis one end fixes with the terminal vertical riser of last latch hook upper end, the lower end of vertical riser contacts with bottom roller one side central axis is rotatable, it is characterized in that on the front end of latch hook base plate and the bottom roller central axis between the last latch hook end, establishing a torsion spring, the head end card of described torsion spring hangs over latch hook and vertical riser joint portion, and the end card of described torsion spring hangs on the latch hook base plate.

2. door lock of elevator according to claim 1 is characterized in that the equal diameters of upper roller (7) and bottom roller (9), and the level interval of the central axis of upper roller (7) central axis and bottom roller (9) is 6～8mm.