| 摘要 |
<p>PROBLEM TO BE SOLVED: To heighten the workability in manufacturing and machining by preventing backlash in the thrust direction between a boss and a bracket by utilizing pressure of oil liquid and simplifying the structure. SOLUTION: The end face 22A of the boss 22 is provided with a first thrust ring 26, and the end face 24B of the bracket 24 is provided with a second thrust ring 27. The thrust ring 27 is slidably fitted in the thrust ring 26, thereby forming right and left oil chambers 28 between the thrust rings 26 and 27. The right and left oil chambers 28 and 28 communicate with each together by a grease supply passage 32. The grease is sealed in the oil chamber 28, the thrust ring 26 is pressed to the end face 22A of the boss 22 by pressure of the grease, and the thrust ring 27 is pressed to the end face 24B of the bracket 24.</p> |
