Patent ID: 8967685
Filing Date: 2015-03-03
Classification: E05B,E05C,Y10S,Y10T

Abstract:
1. An electromagnetic doorlock with button detection and power saving device, comprising: an electromagnet assembly having an electric magnet with electromagnetic attraction and an adsorption assembly arranged on a corresponding surface thereof; wherein the electromagnet assembly is electrically connected to a button detection module and the button detection module includes: a base, a trigger circuit on the base having an electrical contact on a surface thereof, the electrical contact electrically connected to a control circuit, and a trigger detector having an elastically deformable body maintaining a biasing force separating the electrical contact and an electrical trigger for moving the electrical trigger axially in dampened manner to contact the electrical contact and thereby selectively open and close the trigger circuit; wherein the button detection module further includes an elastic member arranged on the elastically deformable body; the adsorption assembly including: an adsorption plate locked on a door plate by a bolt assembly and a spring mounted on the bolt assembly for having an elastic displacement space between an inner side of the adsorption plate and the door plate; a pressing member arranged at a periphery of the adsorption assembly and having a front side pressing on the elastically deformable body of the button detection module; wherein during closure of a door, the adsorption assembly is attracted by the electromagnetic attraction of the electromagnet assembly and the button detection module is pressed by the pressing member; when the door is closed and still, the electromagnetic doorlock is in a low power attraction state; when the door is moved by an external action, the button detection module is triggered so that the electromagnetic doorlock rapidly returns to a normal lock state with normal current supply.