Patent ID: 7033205

Claim:
A connector, comprising: a first housing with a receptacle with an opening having a height H, first terminals mounted in the first housing and having front ends projecting into the receptacle, the front ends of the first terminals being spaced rearwardly from the opening by a distance B; a second housing having a main portion with a front surface, portions of the main portion extending rearward from the front surface being dimensioned for insertion into the receptacle of the first housing when the first and second housings are aligned at a proper connecting posture; and: at least one collision preventing projection at a position of an outer surface of the second housing reward of the front surface of the main portion by a distance D selected to satisfy a relational expression: H≦D<B such that the collision preventing projection contacts the opening from outside the receptacle and hindering a connecting operation when the first and second housings are at a posture oblique to a proper connecting posture.