| 摘要 |
PROBLEM TO BE SOLVED: To stabilize the frictional force of a friction plate of a clutch mechanism while making a structure small and simple to easily control dimension. SOLUTION: This clutch mechanism 36 enables power transmission by using the frictional force of a friction plate 71, engaging a pin 73 for a clutch to a frictional engaging surface of a tapered space part by a wedge effect, and connecting an intermediate shaft 35 to a second small gear 37, when the intermediate shaft 35 is rotated against a housing 41. When the intermediate shaft 35 is stopped, the second small gear 37 is made rotatable to both direction by releasing connection by the pin 73 for clutch between the intermediate shaft 35 and the second small gear 37. The frictional plate is placed in the housing 41. An oil seal 72 contacted by a force to make drag for keeping the pin 73 for clutch act seals between the housing 41 and an outer peripheral surface of the frictional plate 71. A space S surrounded by the housing 41, the frictional plate 71, and the oil seal 72 is filled with lubricating oil J. |
