| 摘要 |
Two complementary couplers, i.e., a socket and a plug, are provided with mating connectors whose interengagement completes a circuit connection between a supply line and a load, the connectors of the socket being normally made ineffectual or inaccessible by a safety mechanism which is deactivated only upon the approach of one or more magnets carried by the plug. The safety mechanism may include one or more blocking plates normally obstructing the socket connectors or a detent preventing manual displacement of conductive extensions of these connectors into engagement with coating supply terminals; in another embodiment, this mechanism comprises a circuit breaker which is moved by the approaching magnet or magnets to close both the main circuit and an ancillary circuit to energize a solenoid which intensifies the contact pressure between the connector extensions and the supply terminals, on the one hand, and respective bridge pieces on the circuit breaker.
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