| 摘要 |
PROBLEM TO BE SOLVED: To obtain stable terminal connection in which the connector is easy to be fitted and hard to be drawn off, and good effectiveness of coupling is obtained. SOLUTION: A recess 19 and projection 25 for engagement are formed at the surfaces of fitting parts 18 and 24, respectively, of a plug side connector C3 and receptacle side connector C4, and in the condition that the two parts 18 and 24 are in engagement, a slipoff preventive effect is generated by the recess 19 and projection 25, wherein the forefront part 18a of the female side fitting part 18 is made as an expanding/contracting part capable of deforming elastically while the male side fitting part 24 is formed as a non-deformable part which is hard to deform elastically.
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