PROBLEM TO BE SOLVED: To miniaturize a winch device by providing an engaging element of a clutch which can be freely engaged and disengaged to/from a winding shaft in a driving side gear.SOLUTION: In the winch device, the winding shaft 2 around which a traction member 1 whose distal end is connectable to a traction object is wound is provided with an energizing means 3 for energizing the traction member 1 in the winding direction thereof, and the driving side gear 5 connected to a drive source 4 is connected through a clutch 6. The clutch 6 comprises: a plunger 12 whose distal end freely appears and disappears from/to a shaft hole 5a of the driving side gear 5 for inserting the winding shaft 2 freely rotatably forwards and backwards, and which is provided inside the driving side gear 5 together with a spring 13 energized in the projecting direction of the shaft hole 5a and a notch 18 formed such that the plunger 12 can be engaged and disengaged on the outer circumference of the winding shaft 2. The notch 18 comprises a distal end receiving surface 18a where the distal end of the plunger 12 is freely brought into contact and separated, and a side receiving surface 18b where the side part 12b on the side of a traction member winding direction L of the plunger 12 is freely brought into contact and separated.COPYRIGHT: (C)2013,JPO&INPIT【課題】巻き軸に係合離脱自在なクラッチの係合子を駆動側歯車に内装することによりウインチ装置を小型化する。【解決手段】牽引対象物に先端が連結可能な牽引部材1を巻装した巻き軸2に、牽引部材1をこれの巻取り方向に付勢する付勢手段3を設けると共に、駆動源4に連繋した駆動側歯車5をクラッチ6を介して連繋したウインチ装置において、クラッチ6は、巻き軸2を正逆回転自在に挿通する駆動側歯車5の軸孔5aに先端が出没自在で、軸孔5a突出方向へ付勢したバネ13と共に駆動側歯車5に内装されたプランジャ12と、巻き軸2外周にプランジャ12が係合離脱可能に形成された切欠18とから成り、該切欠18はプランジャ12の先端が接離自在な先端受承面18aとプランジャ12の牽引部材巻取り方向L側の側部12bが接離自在な側部受承面18bとから構成する。【選択図】図1
