Patent ID: 7874758

Claim:
A binding device comprising: a plate-shaped board; an operation lever rotatably supported on the board; at least a one-piece binding member including a rotation axis extending in a lengthwise direction of the binding member and a pressing portion arranged at a distal end of the binding member opposite to the rotation axis and arranged to press down and hold objects to be bound on the board; and a spring member including a winding portion fixed to a base plate, one end of the winding portion being coupled to the operation lever and the other end of the winding portion being coupled to the distal end of the binding member so as to apply a pressure to the distal end of the binding member by operating the operation lever; wherein the binding member is rotatable around the rotation axis to define a center of rotation when the operation lever is operated, and the binding member includes a turned portion extending from a portion of the binding member that is disposed farthest from the rotation axis towards the rotation axis, the pressing portion being defined by a portion of the turned portion that is bent to extend towards the rotation axis, a distal end of the pressing portion being arranged to press down and hold objects to be bound, and the other end of the winding portion of the spring member is provided in an internal face of the binding member and is coupled to the turned portion or the pressing portion such that pressure is applied to the turned portion by the spring member while the turned portion is bent away from the objects to be bound when the objects to be bound are pressed.