portion 112 of the card 101 and engages with the rear engaging surface 114 b of the engaging convex portion 114 this renders the card holding part 21 a to come into a state of holding the card 101 with the engaging convex portion 114 being grasped from back and forth by the card pressing portion 21 c and the card locking portion 21 d and enables the slide member 21 to be integrated with the card 101 and to move in a front to back direction then when the user pushes the card 101 the card 101 moves along with the slide member 21 to the rear wall part 11 b in this case the pressing force exerted by the user is transmitted from the engaging convex portion 114 of the card 101 to the slide member 21 through the card pressing portion 21 c since the slide member 21 compresses the urging member 81 composed of the coil spring the slide member 21 and the card 101 are subjected to a repulsion of the urging member 81 however the slide member 21 and the card 101 move against the repulsion since this repulsion is weaker than the pressing force exerted by the user in this case the slide member 21 slides under the restriction of a lateral movement by the inner wall of the first side part 11 c and the guide part 62 of the shell 61 the slide member 21 and the card 101 then reach the end point as the most advanced position and come into a full stroke state on the way of the path until the card 101 reaches the end point the contact pads 151.