A connector device includes: a first connector having a first terminal provided in a connector fitting chamber; and a second connector having a second terminal that is accommodated in a connector fitting portion to be fitted to the connector fitting chamber and has a terminal receiving portion to which the first terminal is inserted when fitting the connector fitting portion to the connector fitting chamber. The terminal receiving portion is accommodated in the connector fitting portion with a gap. The connector fitting portion is provided with slits on an upper surface and a lower surface positioned with the terminal receiving portion interposed therebetween.