A first connector includes a first core member, and a first positioning-purpose fitting portion for the second connector. A second connector includes a second core member, in which an induction electromotive force is produced by the first core member, and a second positioning-purpose fitting portion for fitting in the first fitting portion. The first fitting portions, as well as the second fitting portions, may be arranged at opposite sides of the first core member in such a manner that the first core member are interposed between the first fitting portions. A shock-absorbing elastic member, which can be elastically deformed upon contact, may be provided at the first fitting portion (35) and/or the second fitting portion (44).
