Electrical connector with latching means

An electrical connector assembly comprising two housing parts each containing one or more terminals, the housing parts and terminals being such that the housing parts can be mated thereby to mate the terminals contained therein, the housing parts having interengaging latching members which provide a force which assists in mating of the two housing parts, and which serve to secure the housing parts together in their mated condition, the latching members comprising on one housing part a ramp or ramps on each of two opposite sides of the housing part, and on the other housing part a resilient cantilever arm on each of two opposite sides of said other housing part, each arm carrying a projection adapted and arranged to ride over a ramp on the one housing part as the two housing parts are mated, the ramps on the one housing part and the projections on the arms of the other housing part having cooperating surfaces which engage when the housing parts are fully mated, to prevent unmating of the housing parts, in which the ramps are supported on the one housing part such that deflection of the arms of the other housing part towards the one housing part when the housing parts are mated disengages the cooperating surfaces of the ramps and projections and enables the housing parts to be unmated without further deformation of the arms, with the projections on the arms of the other housing part passing under the ramps on the one housing part, whereby the projections offer no resistance to unmating of the housing parts.