| 摘要 |
<P>PROBLEM TO BE SOLVED: To realize a device with an oil seal, sufficiently sealing between a rotary shaft and a housing. <P>SOLUTION: The housing 14 with oil 7 poured, the rotary shaft 44 passing through the inside and outside of the housing 14, and the annular oil seal 50 intervened between the housing 14 and the rotary shaft 44, have a first groove part 50b recessed along the peripheral direction in a peripheral surface brought into contact with the housing 14, a second groove part 50d recessed along a circumferential direction in an inner peripheral surface brought into contact with the rotary shaft 44, and a communicating hole 50e connecting the first groove part 50b and the second groove part 50d. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
