ELECTROMAGNETIC DOORLOCK WITH SHOCK DETECTION AND POWER SAVING DEVICE

摘要

The invention relates to an electromagnetic doorlock with shock detection and power saving device comprises an electromagnet assembly and a corresponding attraction assembly. The electromagnet assembly is connected to a shock detection module and the attraction assembly has a pressing unit to press the shock detection module. When the door is opened, the electromagnet assembly does not supply power; when the door is closed, the electromagnet assembly with electromagnetic attraction attracts the attraction assembly and the pressing unit presses the shock detection module. That is, the electromagnetic doorlock usually stays in a low-energy attraction state; however, when a shock detection module is triggered, the electromagnetic doorlock returns to normal lock state for achieving power saving effect and control of the external force detection.

主权项

1. An electromagnetic doorlock with shock detection and power saving device, comprising:
an electromagnet assembly having an electric magnet with electromagnetic attraction and an attraction assembly arranged in a corresponding surface thereof; wherein the electromagnet assembly is electrically connected to a shock detection module, including: a plate having a post hole with an upward opening at a center thereof and a hollow portion at an inner side thereof; a shaft having a flange at a middle section thereof, a small spring mounted at a lower section thereof to be placed in the post hole and an electrical trigger arranged at a top surface thereof; a positioning sleeve having a hook body at a side thereof to hook on to a periphery of the post hole and corresponding to the post hole having a through hole for inserting in an upper section of the shaft; an elastic member mounted on a top of the plate; a sensor mounted on the elastic member and electrically connected to a control circuit and a bottom surface thereof corresponding to the electrical trigger having a trigger zone; an abutment body mounted on the sensor and having a protrusion portion and a positioning flange at a periphery thereof; and a seat having an axial through hole for the abutment body to be axially telescoped therein and the telescopic abutment body driving the sensor to provide an upward elastic force for the abutment body by the elastic member; the attraction assembly includes: an attraction plate having a spot-faced hole and locked on a door plate from an inner side thereof by a bolt assembly bolting into the spot-faced hole and a spring mounted on the bolt assembly for having an elastic displacement space between the inner side of the attraction plate and the door plate; and a pressing unit mounted at a periphery of the attraction assembly and having a front side being able to press the abutment body of the shock detection module; whereby when the attraction assembly is attracted by the electromagnet assembly, the abutment body of the shock detection module is pressed by the pressing unit to simultaneously drive the sensor moving inward to press the elastic member; at this time, the electric magnet is in a low-power attraction state; when the abutment body of the shock detection module is displaced by an external action, the sensor is triggered by the displacement of the elastic member for the electric magnet returning to a normal current supply and rapidly, being into a normal lock state.