A clutch pawl includes a synthetic resin body member and a metallic reinforcing member. The synthetic resin body member is pivotally mounted to a clutch cam. The metallic reinforcing member integrally pivots with the body member and reinforces the body member. The toggle spring member divides and biases the clutch pawl to the engaged position and the separated position.本發明之目的在於對於離合器復位機構，不但可防止離合器凸輪變形，且可維持離合器爪之強度而謀求輕量化。離合器爪42具有：合成樹脂製之本體構件50、與金屬製之補強構件52。合成樹脂製之本體構件50擺動自如地安裝於離合器凸輪40。金屬製之補強構件52可與本體構件50一體擺動，且補強本體構件50。肘頂彈簧(toggle spring)構件47可將離合器爪42朝扣合位置與離開位置分別彈推。
