Patent ID: 6500085
Filing Date: 2002-12-31
Classification: F16H

Abstract:
A mechanical device for transmitting power comprising:a power-transmission member rotatably mounted on a housing of an automotive accessory so that the power-transmission member is arranged concentrically with respect to a rotating shaft of the automotive accessory; a rotating member fixedly connected to a shaft end of the rotating shaft and arranged to be opposite to the power-transmission member in an axial direction of the rotating shaft; a plurality of shear pins via which the power-transmission member and the rotating member are joined to each other; a first member of the power-transmission member and the rotating member, to which the shear pins are fixedly connected; a second member of the power-transmission member and the rotating member having a portion defining a plurality of shear-pin insertion holes, an inside diameter of each of the shear-pin insertion holes being dimensioned to be larger than an outside diameter of each of the shear pins; each of the shear pins having a notched portion between opposing faces of the power-transmission member and the rotating member, and a flanged portion formed on an outer periphery thereof at a position being offset from the notched portion toward the second member and interleaved between the power-transmission member and the rotating member so that the notched portion adjoins the flanged portion and that both side walls of the flanged portion abut the opposing faces of the power-transmission member and the rotating member; and the second member being engaged with the shear pins through the shear-pin insertion holes, and fixedly connected to the shear pins by applying a tightening force in an axial direction of each of the shear pins between a protruded end portion of each of the shear pins projecting outside of the shear-pin insertion holes and an associated one of the flanged portions of the shear pins.