CN202990615U

CN202990615U - Locking device with function of locking and unlocking state display

Info

Publication number: CN202990615U
Application number: CN 201220715944
Authority: CN
Inventors: 吴希明; 孙皓天; 左文明; 罗硼; 骆耘
Original assignee: China Helicopter Research and Development Institute
Current assignee: China Helicopter Research and Development Institute
Priority date: 2012-12-21
Filing date: 2012-12-21
Publication date: 2013-06-12
Anticipated expiration: 2022-12-21

Abstract

The utility model relates to the technical field of locking devices, in particular to a locking device with the function of locking and unlocking state display. The locking device comprises a locking ring (1), a locking box (2), a locking hook (3) and a limit part (4), the locking hook (3) and the limit part (4) can be rotationally mounted in the locking box (2), the locking ring (1) is mounted on a door frame, and the locking box (2) is mounted on a door. In the process of locking the door, the locking ring (1) drives the locking hook (3) to rotate, and the locking hook (3) meshes with the limit part (4) when rotating to lock. The locking device is characterized in that the locking hook (3) and the limit part (4) can judge locking and unlocking states of the locking device according to different conducted electrodes of different meshing positions. On the basis of normal locking function, the locking device has the advantages of simple structure, accuracy in indication, no false alarm and the like.

Description

A kind of blocking device with showing open and-shut mode

Technical field

The present invention relates to the technical field of blocking device, particularly relate to the blocking device that shows open and-shut mode.

Background technology

A kind of common blocking device is comprised of operating handle, transmission connecting rod mechanism, lock box and lock ring etc., realizes locking function when the latch hook in lock box hooks lock ring.Open and close intuitively signal for providing, on latch hook usually with frizzen, when latch hook arrives predetermined locked position, frizzen is pressed the microswitch that is contained on lock box, provide the switching value signal, electrical system can be converted into the switching value signal the bright of indicator lamp or go out, and operating personnel can or go out to judge the open and-shut mode of blocking device by the bright of indicator lamp.

This by microswitch provide the open and-shut mode signal the main deficiency that exists of form be: open and-shut mode requires highly to assembly technology, and the vibration in use of blocking device latch hook, the rigging error of frizzen etc. all might cause the open and-shut mode signal that provides inaccurate.

The objective of the invention is to improve the accuracy of blocking device on off state indication, eliminate false-alarm.

Summary of the invention

Technical problem to be solved by this invention is: improve the accuracy of blocking device on off state index signal, reduce or eliminate false-alarm.

Technical scheme of the present invention is:

A kind of blocking device with showing open and-shut mode, comprise lock ring 1, lock box 2, latch hook 3 and locating part 4, latch hook 3 and locating part 4 are rotatably installed in lock box 2, lock ring 1 is arranged on doorframe, lock box 2 is arranged on door, and in the door closing process, lock ring 1 can rotate by band moveable lock hook 3, latch hook 3 and locating part 4 engagements during rotational lock, latch hook 3 judges the on off state of blocking device by the Different electrodes of the connection of the different positions of engagement from locating part 4.

The open and-shut mode signal that is in contact with one another the bright of conducting or the present indicator lamp of insulation meter or goes out and provide blocking device of latch hook 3 and locating part 4.

The invention has the beneficial effects as follows: realizing on the basis of normal locking function, the latch hook that is in contact with one another of employing blocking device inside and locating part are as the switch of the warning circuit of capable of indicating on-off state, by the conducting of alarm circuit and the locking state of disconnection judgement blocking device, avoided the shortcoming that false alarm rate is high, matching requirements are high and the life-span is short that adopts the microswitch alarm to bring, have simple in structure, indication accurately, without characteristics such as false-alarms.

Description of drawings

Fig. 1 is the blocking device open mode, and lock ring 1 is fixedly mounted on doorframe, and lock box 2 is arranged on door, moves with hatch door;

Fig. 2 is the blocking device locking state, and the latch hook 3 of lock box 2 inside turns to predetermined locked position, and door closure no longer continues motion, and the motion of locating part 4 and lock ring 1 restriction latch hook 3 realizes locking function;

Fig. 3 is schematic diagram of the present invention, and latch hook 3 and locating part 4 connect respectively the both positive and negative polarity of low-voltage dc power supply as two electrodes, index signal by latch hook 3 and locating part 4 be in contact with one another conducting or insulation provides.

The specific embodiment

Below by the drawings and specific embodiments, the present invention is described in further detail.

Latch hook 3 and locating part 4 connect respectively the both positive and negative polarity of low-voltage dc power supply as two electrodes, and being in contact with one another the bright of conducting or the present indicator lamp of insulation meter or going out of latch hook 3 and locating part 4 provides the open and-shut mode signal, and concrete scheme is as follows:

1) scheme one: at the locked position place, and the indication line conduction

Locating part 4 adopts the conductive metallic material that satisfies requirement of strength to make; Latch hook 3 main bodys adopt the conductive metallic material that satisfies requirement of strength to make, appearance coats the wear-resisting insulation materials of one deck, latch hook 3 is coated insulation material not at position that locked position contacts with locating part, and the alarm circuit is conducting on locked position place and position that locating part 4 is meshed.At this moment, the bright expression blocking device locking of indicator lamp.

2) scheme two: at the locked position place, and the indication line conduction

Locating part 4 adopts the metal material of conduction to make; Latch hook 3 main bodys adopt the insulation materials that satisfies requirement of strength to make, and the hardware of conduction is preset in inside, and hardware is connected with warning circuit and contacts conducting at locked position with locating part.At this moment, the bright expression blocking device locking of indicator lamp.

3) scheme three: at the locked position place, and the not conducting of indication circuit

Latch hook 3 and locating part 4 all adopt the conductive metallic material that satisfies requirement of strength to make, and contact position on latch hook 3 applies wear-resisting insulation materials, at this moment, indicate not conducting of circuit when locked position place latch hook 3 is meshed with locating part 4.At this moment, indicator lamp does not work and represents blocking device locking.

Claims

1. one kind with the blocking device that shows open and-shut mode, comprise lock ring (1), lock box (2), latch hook (3) and locating part (4), latch hook (3) and locating part (4) are rotatably installed in lock box (2), lock ring (1) is arranged on doorframe, lock box (2) is arranged on door, in the door closing process, lock ring (1) can rotate by band moveable lock hook (3), latch hook during rotational lock (3) and locating part (4) engagement, it is characterized in that, latch hook (3) judges the on off state of blocking device from locating part (4) by the Different electrodes of the connection of the different positions of engagement.

2. a kind of blocking device with showing open and-shut mode as claimed in claim 1, the open and-shut mode signal that is in contact with one another the bright of conducting or the present indicator lamp of insulation meter or goes out and provide blocking device of latch hook (3) and locating part (4).