Disclosed are two embodiments of a coaxial
electrical connector designed for use in hazardous locations.
Mating connectors are connected coaxially, and coupled together by means of a threaded connection. When the
mating connectors are connected, they cannot be disconnected manually. Rather, a tool is necessary to disconnect the connectors. In one embodiment, each connector includes a generally cylindrical coupler member having integral, axial fingers or tines spaced circumferentially. The couplers are rotatably mounted to inserts in which the connecting elements are embedded. A
ratchet assembly permits the couplers to be threaded together to make a connection but is overridden in the unconnecting direction, requiring a tool to be placed in the space between adjacent tines to connect the coupler to an associated outer housing which may then be turned to disconnect the connectors. In a second embodiment,
coupling members are provided with a
ratchet interface surface having
interlocking, yieldable teeth so that when the
coupling members are secured by hand, a retaining force secures the
coupling members together and prevents disconnection by manual force alone, requiring tools to deform the teeth and disconnect the connectors.