| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a driving transmission device and an image forming device in which oil can be charged to a sliding part even in a complicated driving system with certainty and ease. SOLUTION: A driving transmission device (half rotation control clutch) 200 is composed of an input gear (a driving member) 201 rotatably supported to a cam shaft (an output shaft) 84c, an output hub (a driven member) 202 fixed to the cam shaft 84c, and a coil spring 203 laid over both of the input gear 201 and the output hub 202. An oil charging hole 201b is axially formed on one of the input gear 201 and the output hub 202, for instance, on the input gear 201. A sufficient amount of lubricating oil is surely supplied to a sliding part between the input gear 201, the output hub 202 and the coil spring 203 by directly charging oil to the oil charging hole 201 formed on the input gear 201. The oil charging is facilitated with high efficiency, because it is unnecessary to demount a number of units and avoide complicated driving systems.</p> |
