MALE AND FEMALE CONNECTORS FOR PREVENTING REVERSE INSERTION

PROBLEM TO BE SOLVED: To resolve the defect that conventionally a connector for preventing wrong insertion which is effective against wrong insertion, but when there is a plurality of receiving side connectors, it can be inserted into any one of them and not into a specific place, since there is no way of identifying among the receiving side connectors. SOLUTION: Guide keys 5, provided in an insertion side connector 8 and the receiving side connector 7, are provided so as not to conflict with each other, and the guide key 5 provided with a plurality of protrusion parts 3 in a lower end part of a trapezoidal foundation part 2 and provided with a protruding piece part 4 in the other upper end part is fit to a trapezoidal guide groove 6. According to this, in an initial insertion state of the guide key 5, it is smoothly inserted in the trapezoidal guide groove 6 since there are no protrusion parts 3, and in a state after the insertion, it can be fixed to the guide groove since a force is applied by the plurality of protrusion parts 3 pushing up the guide key 5 inside the guide groove 6.