Patent ID: 6837750

Claim:
A connector housing to be coupled with a first mating connector housing, comprising: a tube-shaped casing, into which a first housing body of the first mating connector housing can enter; and obstruction means for preventing a second mating connector housing, which includes a second housing body of the same shape as that of the first housing body and a projection outwardly protruding from the second housing body, from entering into the casing, wherein the obstruction means is a notch formed by notching an edge of the casing near a point of contact with the second mating connector housing and the notch faces the projection when the second mating connector housing enters into the casing, wherein a face of the notch facing the second mating connector housing is gradually inclined toward the outside of the casing as the face leaving the second mating connector housing and also is inclined relatively to the insertion direction of the second mating connector housing into the casing.