| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an intake valve device that is small sized and light weight and can keep high performance over a long period even under a harsh usage environment by preventing the occurrence of relative friction movement between the resin-made gear body and shaft of a reduction gear. <P>SOLUTION: The reduction gear 9, reducing the driving force of a motor 8 and transmitting it to a valve 7 arranged in an intake passage 4 through which intake air supplied to an engine flows, does not cause complicated relative friction movement between the gear body 12A and the shaft 12C by arranging a ball bearing 14 of a rolling bearing through a bearing holding member 13 between the gear body 12A and the shaft 12C constituting an intermediate gear 12, and thereby securing excellent decelerating performance over a long period without causing early wear of the gear body 12A even under the harsh usage environment. <P>COPYRIGHT: (C)2013,JPO&INPIT |
