| 摘要 |
PROBLEM TO BE SOLVED: To provide a compound rotary joint structure that is structured simply and at low cost. SOLUTION: The compound rotary joint structure comprises a bearing housing 1 of the fixing side and a hollow shaft 5A that is inserted in this bearing housing 1, and the hollow shaft 5A is supported by bearings 2 that are inserted and fixed on the inner circumference of the bearing housing 1. Thereby, the structure comprises a rotating table 5 that is supported in free rotation by the bearing housing 1, a slip ring mechanism 10 for connecting the electric wiring 100A, 100B of the fixing side and rotating side, and a rotary joint 20 for connecting the air passage 28, 5C of the fixing side and the rotating side. The slip ring mechanism 10 and the rotary joint 20 are both housed in the hollow shaft 5A.
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