| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a rotation body and a rocker arm capable of reducing rotational resistance and the number of parts. <P>SOLUTION: The rotation body and the rocker arm includes a rocker arm body 2 having a roller shaft 4, and the rotation body 7 which rotates around a center line C of the roller shaft 4. The rotation body 7 has a slide bearing 12 on the axial inner side which slides on and contacts with the roller shaft 4, and the roller body 11 on the axial outer side which rotates together with the slide bearing part 12. A radial dynamic pressure generating groove 15 is formed on an inner peripheral surface 13 of the slide bearing 12 to generate dynamic pressure by the lubricating oil between an inner peripheral surface 13 of the slide bearing 12 and an outer peripheral surface 9 of the roller shaft 4 when the rotation body 7 rotates. <P>COPYRIGHT: (C)2013,JPO&INPIT |
