Connection device and electronic device

In this linking device (1), when a resilient member (4) is in an unconnected state, a restoring force vector (81) substantially overlaps a first reference line (82) and the restoring force and an opposing force are balanced with each other, whereby the position of an operating portion (5) is maintained and the state of the resilient member (4) is kept in the unconnected state. When the position of the operating portion (5) is changed in a state in which an electric wire is inserted between a terminal portion (31) and the resilient member (4) in the unconnected state, the part of the operating portion (5) in which the opposing force is generated transitions from a second part (514) to a third part, whereby a second reference line is generated, and the resilient member (4) is restored from the unconnected state by the restoring force and transitions to a connected state in which the electric wire is clamped between the resilient member (4) and the terminal portion (31). This allows for a reduction in the force