CN201318076Y

CN201318076Y - Locking device

Info

Publication number: CN201318076Y
Application number: CNU2008202309611U
Authority: CN
Inventors: 张良春; 赵霞; 李军; 王永刚; 刘静涛; 尹恩华
Original assignee: 713th Research Institute of China Shipbuilding Industry Corp
Current assignee: 713th Research Institute of China Shipbuilding Industry Corp; 713th Research Institute of CSIC
Priority date: 2008-12-18
Filing date: 2008-12-18
Publication date: 2009-09-30
Anticipated expiration: 2018-12-18

Abstract

The utility model discloses a locking device, comprising a mounting support, wherein an electromagnet, a stroke switch and a rotation shaft are arranged on the mounting support, a pulling plate is arranged on the end portion of the rotation shaft, the pulling plate is corresponding to the electromagnet, an offsetting torsion spring is sleeved outside the rotation shaft, a locking hook is arranged on the rotation shaft, one end of the offsetting torsion spring is connected with the locking hook, the other end is connected with the mounting support, a guide slot is arranged in the mounting support, a slide block is arranged in the guide slot, the slide block is connected with an offsetting spring, and the locking hook is contacted with the slide block. The locking device has simple structure and the functions of automatic locking, automatic unlocking hand-operated locking and the like. After a switch plate on the slide door pushes the slide block to move forward for a distance, the locking hook can be separated from the supporting of the upper surface of the slide block, the rotation shaft drives the locking hook to rotate to the locking position under the function of the offsetting torsion spring, the locking hook can hook the switch plate and finishes the automatic locking, the design has novel structure and reliable use, and is especially suitable for occasions which frequently move, have high requirements to the safety and the reliability, and apply a great deal of group-control horizontal slide doors.

Description

A kind of locking device

Technical field

The utility model relates to the equipment in a kind of safety door system, specifically relates to a kind of automatic locking and auto-unlocking device that is applied in sliding door in the subway light rail safety door system.

Background technology

Sliding door and car door synchronous opening and closing corresponding in the safety door system with the train car door, the guiding passenger correctly gets on or off the bus, and the personnel of preventing fall into track and produce contingency.Because of it uses frequently, usage quantity is big, and safety, the reliability of its locking device proposed higher requirement.The locking device that uses has electric mortise lock, electromagnetic core lock etc. at present, the coupling mechanism force of electric mortise lock structure is limited, and general latching force is in tens newton, and the lock function of locking device lost efficacy after external force is greater than this latching force, safety factor is little, thereby causes system reliability to reduce.The electromagnetic core lock adopts electromagnet core to stretch into a body and finishes locking function, the iron core of this locking mechanism is realized resetting by spring, can't keep lock pin at unlocked position after the release of door body, can cut off the power supply after needing to keep the electromagnet energising several seconds to treat to open the door next time, electromagnet is switched on for a long time influences electromagnet application life, and use a travel switch can't reflect accurately whether a body closes and put in place and be locked into the position, otherwise need to increase number of switches, reduced the whole system reliability like this.

Summary of the invention

The purpose of this utility model is to provide a kind of simple in structure, sliding door locking device with automatic locking, automatic unlocking function.

For achieving the above object, the utility model is by the following technical solutions:

The utility model comprises installing rack, is provided with electromagnet, travel switch and rotating shaft on installing rack, and the end of rotating shaft is provided with arm-tie, and arm-tie is corresponding with electromagnet; Above-mentioned rotating shaft overcoat reduction torsion spring, and in rotating shaft, be provided with latch hook, an end of reduction torsion spring is connected with latch hook, and its other end is connected with installing rack; In above-mentioned installing rack gathering sill is set, is provided with slide block in the gathering sill, slide block is connected with back-moving spring; Above-mentioned latch hook contacts with slide block.

Above-mentioned rotating shaft is connected with spacing collar, spacing collar overcoat reduction torsion spring.

Be provided with block in the above-mentioned gathering sill.

Installing rack is provided with pivoted arm and manual unlocking travel switch, and pivoted arm is connected with latch hook.

Adopt the utility model of technique scheme, simple in structure, have functions such as automatic locking, automatic unlocking and manual unlocking.After group plate promotion slide block on the sliding door moves forward a segment distance, latch hook can break away from the support of slide block upper surface, rotating shaft this moment drives latch hook and turn to locked position under the effect of reduction torsion spring, latch hook can catch on group plate and finish automatic locking, advantages such as this kind project organization novelty, use is reliable, the life-span is long, occasion frequent, that security reliability requires height, a large amount of team control application level sliding doors is particularly suited for moving.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 be among Fig. 1 A-A to view.

The specific embodiment

As shown in Figure 1 and Figure 2, the utility model comprises installing rack 1, and installing rack 1 is connected on the munnion 9 of fix driving door by right angle rack 2.On installing rack 1, be provided with electromagnet 11, travel switch 13 and rotating shaft 3.The end of rotating shaft 3 is provided with arm-tie 4, and arm-tie 4 is corresponding with electromagnet 11, when 11 pairs of arm-ties 4 of electromagnet have active force, under the effect of arm-tie 4, can drive rotating shaft 3 and rotate.

Be connected with latch hook 5 and spacing collar 6 in the rotating shaft 3 in turn, spacing collar 6 overcoat reduction torsion springs 7, an end of reduction torsion spring 7 place in the latch hook 5 corresponding holes, and the other end places in the installing rack 1 corresponding hole.Like this, latch hook 5 just can rotate with rotating shaft 3, and can return to reset condition under the effect of reduction torsion spring 7.

T type gathering sill is set in installing rack 1, is provided with slide block 8 and block 10 in the gathering sill, slide block 8 can slide in gathering sill and be spacing by block 10, and slide block 8 is connected with back-moving spring 17.Under normal circumstances, above-mentioned latch hook 5 contacts with slide block 8, and after slide block 8 moved, latch hook 5 can break away from the support of the upper surface of slide block 8, and rotates under the effect of reduction torsion spring 7.

For realizing manual unlocking, the utility model can also be provided with pivoted arm 14 and manual unlocking travel switch 15 on installing rack 1, and pivoted arm 14 is connected with latch hook 5.Pivoted arm 14 is that pivoted arm 14 is connected with the rotating shaft pin with annexation between the latch hook 5, and latch hook 5 is connected with the rotating shaft key.In brief, pivoted arm 14 all links with rotating shaft 3 with latch hook 5.

Operating principle of the present utility model is as follows: before carrying out automatic locking, sliding door moves horizontally under the drive of motor, when moving to locked position, the plate 16 of dialling on the sliding door promotes slide block 8 reaches one segment distance, being expressed as group plate 16 promotion slide blocks 8 levels in Fig. 1 moves to right, like this, latch hook 5 can break away from the support of slide block 8 upper surfaces and turn to locked position under the effect of reduction torsion spring 7, and latch hook 5 catches on group plate 16 and finishes automatic locking.

Before carrying out automatic unlocking, the control system of sliding door is sent the order of opening the door, electromagnet 11 adhesives, arm-tie 4 drives rotating shaft 3 and rotates, latch hook 5 turns over certain angle under the drive of rotating shaft 3, and at this moment, trigger travel switch 13 contacts, send unlocking signal, the sliding door of motor action drive is immediately carried out and is opened the door.

When the execution manual unlocking opens the door, in emergency circumstances can pivoted arm 14 drive latch hooks 5 be turned an angle release mechanism 17 on the sliding door body by handle on the sliding door body or key, manual unlocking travel switch 15 triggers, and cuts off motor power, pushes sliding door immediately open.

Claims

1, a kind of locking device, it is characterized in that: it comprises installing rack (1), be provided with electromagnet (11), travel switch (13) and rotating shaft (3) on installing rack (1), the end of described rotating shaft (3) is provided with arm-tie (4), and arm-tie (4) is corresponding with electromagnet (11); Described rotating shaft (3) overcoat reduction torsion spring (7), and in rotating shaft (3), be provided with latch hook (5), an end of reduction torsion spring (7) is connected with latch hook (5), and its other end is connected with installing rack (1); In described installing rack (1) gathering sill is set, is provided with slide block (8) in the gathering sill, slide block (8) is connected with back-moving spring (17); Described latch hook (5) contacts with slide block (8).

2, locking device according to claim 1 is characterized in that: described rotating shaft (3) is connected with spacing collar (6), spacing collar (6) overcoat reduction torsion spring (7).

3, locking device according to claim 1 is characterized in that: be provided with block (10) in the described gathering sill.

4, locking device according to claim 1 is characterized in that: described installing rack (1) is provided with pivoted arm (14) and manual unlocking travel switch (15), and described pivoted arm (14) is connected with latch hook (5).