| 摘要 |
PROBLEM TO BE SOLVED: To provide a swivel joint capable of stabilizing a flow of fluid with a simple constitution, while storing a hose for guiding fluid in a space-saving manner not to hinder a rotating operation.SOLUTION: This swivel joint 1 includes a fixed portion 10, a rotating portion 11 including a shaft portion 30 and performing a rotating motion relatively to the fixed portion 10 with a virtual center shaft as a center, and the hose 32 including a first spiral portion 71 for spirally surrounding the shaft portion 30 along a plane substantially orthogonal to the center shaft and guiding fluid between the fixed portion 10 and the rotating portion 11. A first hose 61 includes a first spiral portion 81 spirally extending in the same winding direction as that in the first spiral portion 71 along an outer peripheral surface of the shaft portion 30 from an end portion at the radial inside of the first spiral portion 71. |
