Abstract: A pedal coupling pin for rotatably coupling a coupling member to a pedal including a cylindrical portion, a flange whose diameter is greater than the diameter of a coupling pin insertion holes formed in the coupling part, said flange being provided on one end of the cylindrical portion and an elastic retaining member provided on another end of the cylindrical portion. The elastic retaining member includes at least one pair of arms which extend outwardly toward the flange end and whose free ends extend outwardly a distance greater than the diameter of the coupling pin insertion holes.

Abstract: A coupling device for coupling together a plurality of plates which includes a push pin which clasps one of the plates and which has a leg formed on its undersurface, a carrier box which is inserted and anchored in a slot formed in another of the plates and which has a slide slot formed in its undersurface and an engaging base which is loosely inserted into the slide slot of the carrier box so that it is free to move in a horizontal plane and which has arms formed on its upper surface that resiliently clasp the leg of the push pin.