Patent ID: 7445492

Claim:
A connector, comprising: a housing connectable with a mating housing, the housing including a lock arm cantilevered substantially along a connecting direction of the housing with the mating housing, a lock formed at a position of the lock arm closer to a supporting point of the resilient deformation than a free end, and at least one hitting portion arranged at a position on the lock arm closer to the free end than the lock, and wherein the lock arm is interfered with and resilient deformed by an engaging portion of the mating housing during a connecting operation of the housing with the mating housing, wherein the lock is engaged with the engaging portion to hold the housing with the mating housing when the housing is connected properly with the mating housing and the lock arm is restored resiliently, wherein the at least one hitting portion can hit at least one receiving portion as the lock arm is restored resiliently, and wherein a hitting surface of the at least one hitting portion to hit the receiving portion is in the form of a substantially flat surface gradually widened towards the operable portion.