| 摘要 |
A fixture lowering assembly for lowering fixtures, such as security and surveillance cameras, that require connection and disconnection of multiple complex electrical contacts is disclosed. The assembly includes a fixed housing that is mounted above ground level and a movable housing containing the fixture and being capable of being lowered to the ground level. A connect unit connects the fixed and movable housings and includes a latching assembly and first and second electrical connectors. The first and second connectors are each mounted on a pair of guide rods that extend through a pair of springs so that the first and second connectors freely float to facilitate connection and disconnection. The electrical connectors also include mounting bodies capable of receiving a variety of different electrical contact plates depending upon the type of fixture used with the lowering assembly. This construction of the contact plates also provides a moisture proof seal about the pins and sockets. The electrical contact plates include pin and socket electrical contacts and the pins are mounted on one of the plates in recesses below the outer surface of the plate in order to protect the pins from inadvertent damage. The opposite plate includes projections that engage the recesses in the opposite plate in order to ensure correct alignment between the pins and sockets. The electrical contact plates and the mounting posts for the first and second connectors may also include, respectively, leading alignment members and leading alignment posts to further facilitate correct alignment of the electrical contacts.
|
