CONNECTION DEVICE

A connector (1) includes a case (2), a terminal part (3), an elastic member (4), and an operation part (5). The terminal part (3) has conductivity and is fixed to the case (2). The elastic member (4) is mounted on the case (2). The elastic member (4) presses a wire (91) against and clamps the wire to the terminal part (3) by restoring force of the elastic member. The operation part (5) comes in contact with the elastic member (4) and maintains a non-connected state of the elastic member (4) in which the elastic member is bent more than in its connected state in which the elastic member clamps the wire (91). In the connector (1), when the wire (91) is inserted between the terminal part (3) and the elastic member (4) in the non-connected state, a force is transmitted indirectly from the wire (91) to the operation part (5) to move the operation part (5) and to cause the elastic member (4) to transition from the non-connected state to the connected state. This facilitates connecting the wire (91) to the connector (1).