To provide a connector device for a card restraining force of the card moving toward an ejecting direction without damaging the card regardless of the size of the gap formed between a housing and the card.

An ejection mechanism part 11 has: a slider 12 pushed in and sliding together with the card 30 when the card 30 is inserted, and sliding while pushing out the card 30 when sliding in an ejecting direction; an elastic member 17 energizing the slider 12 in the ejecting direction; a rotation member 18 rotation freely mounted on the slider 12; and a groove 20, to which the rotation member 18 is sliding movement freely fitted. The groove 20 is composed of a guiding groove 21 guiding the movement of the rotation member 18 in an insertion/ejection direction, and a holding groove 22 (a heart cam groove) holding the rotation member. The guiding groove 21 is composed of a curved groove.