Patent ID: 6953370

Claim:
A connector comprising a female housing having a fitting recess, and a male housing for fitting into said fitting recess; wherein a projection is formed on one of an outer periphery of said male housing and an inner periphery of said fitting recess, and a groove is formed in the other; and when said female and male housings form a proper combination, or are properly disposed relative to each other, said projection is fit into said groove, thereby allowing said two housing to be fit together; and when said female and male housings form an improper combination, or are improperly disposed relative to each other, said projection interferes with the mating housing to limit the fitting of said two housings; characterized in that: an interference portion is formed at said housing having said groove, and when said two housings form an improper combination, or are improperly disposed relative to each other, said projection abuts against said interference portion; and an abutment surface of said interference portion and an abutment surface of said projection are oblique relative to a direction of fitting of said two housings, and are inclined in such a direction that when a fitting force acts on said abutment surfaces, the inner periphery of said fitting recess and the outer periphery of said male housing are moved towards each other.