| 摘要 |
FIELD: electricity.SUBSTANCE: electromagnetic lock refers to security engineering, particularly to locking devices controlled by electronics, and can be applied to lock a loose end of fixation device for bicycle, baby carriage and similar vehicles at parking lots for such vehicles, as well as for locking of doors in cabinets, safe boxes and rooms, and includes case, solenoid, core, catch, latch, balls, spring, cross piece, signal track connected to the conductive case, cross piece conductor connected to internal end of the cross piece, where the case is attached to support separately, while signal track, case, at least one of conductive lock parts contacting the case and cross piece in closed position of the cross piece, cross piece and cross piece conductor are parts of feedback circuit. In the second variant, electromagnetic lock includes case, bearing frame, solenoid, core, console bushing, latch, balls, spring, cross piece, signal track connected to conductive bearing frame, cross piece conductor connected to internal end of the cross piece, the case is dielectric, axial hole of case bottom forms a catch where signal track, bearing frame, at least one of conductive lock parts contacting the bearing frame and cross piece in closed position of the cross piece, cross piece and cross piece conductor are parts of feedback circuit.EFFECT: higher reliability.25 cl, 4 dwg |
