| 摘要 |
PROBLEM TO BE SOLVED: To enable the securing of the necessary lubrication even by abolishing a bush so as to reduce the manufacturing costs by reducing the bush. SOLUTION: In a rocker arm, an upper end side of a pair of opposite side walls 4, 5 is connected in a line with a connection wall 12 to make a truncated chevron shape, and both ends of a rocker shaft 2 is secured in axis holes 4a, 5a of both the side walls not rotatably. A lubricating oil injection hole 16 to inject lubricating oil for the connection wall is installed in the portion between both the axis holes in the rocker shaft, and a spherical recess part 19 to disperse the lubricating oil injected from the lubricating oil injection hole to the periphery is installed in the connection wall. COPYRIGHT: (C)2005,JPO&NCIPI
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