Explosion-proof button for civil air defence door

Abstract

An embodiment of the invention discloses an explosion-proof button for a civil air defence door. The explosion-proof button comprises a steel frame box, a top plate, cover plates and a button groove, wherein the steel frame box comprises two side steel plates and a bottom plate, wherein two sides of each of the two side steel plates are provided with buckle parts, and a through hole is formed in the bottom plate; the top plate is installed at the top part of the steel frame box; the number of the cover plates is two, the two cover plates are installed on two ends of the steel frame box, each cover plate is connected with the bottom part of the steel frame box by means of a rotating shaft arranged at the bottom part of the cover plate, each cover plate comprises an elastic cushion layer, a steel liner and a thick steel plate which are sequentially arranged from outside to inside, and both sides of each steel liner are provided with clamping pieces matched with the buckle parts; and the button groove is formed in the bottom part of the steel frame box, an opening of the button groove is communicated with the through hole of the bottom plate, a button is installed in the button groove, and the top part of the button is level with the through holes. The explosion-proof button for the civil air defence door has simple structure, the components are all connected mechanically, the explosion-proof button has no circuit electric structure, is high in explosion-proof and vibration resisting performance and high in safety, can be opened from two sides of the door, and is convenient in use and maintenance.

Description

technical field [0001] The invention relates to a button for a civil air defense door, in particular to an explosion-proof button for a civil air defense door. Background technique [0002] In civil air defense projects such as air-raid shelters and other air-proof facilities, airtight protective doors are generally provided to isolate toxic and explosive studios. in and out. The explosion-proof performance of general doorbells is poor, especially the buttons containing electric or electric circuits are easy to be damaged when there is a large vibration or impact, resulting in the doorbell being stuck and unable to perform normal call work, while the purely mechanical button structure is more complex. It is complicated and inconvenient to maintain, and the general button can only be used on one side of the explosion-proof door, and is not suitable for the use of the secret room door that needs to be opened manually for entry and exit. Contents of the invention [0003] T...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the embodiments of the present invention is that the general doorbell has poor explosion-proof performance, cannot perform normal call work when there is a large vibration or impact, and the button structure is complicated, which is not easy to maintain, and the general button It can only be used on the upper side of the explosion-proof door, and it is not suitable for the use of the secret room door that needs to be opened manually. A kind of explosion-proof button for the air-proof door is proposed.

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