Rotary joint
AssigneePillar Corporation
InventorsShuhei Matsui, Takayuki Iwasa
Life of this patent
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Abstract
A rotary joint includes a tubular case body, a shaft body, and a communication flow passage connecting an outer flow passage of the case body and an inner flow passage of the shaft body. The inner flow passage has a plurality of branch passage portions being open at positions different from each other in a circumferential direction, on the outer circumferential side of the shaft body, and a main passage portion extending in an axial direction from an end surface on one side in the axial direction of the shaft body toward another side in the axial direction and having a merging end portion where the plurality of branch passage portions merge, on the other side in the axial direction.
Claims7
A rotary joint comprising:
- a tubular case body formed such that an outer flow passage through which a sealing target fluid flows is open on an inner circumferential side;
- a shaft body provided in the case body so as to be rotatable and formed such that an inner flow passage through which the sealing target fluid flows is open on an outer circumferential side;
- and
- a communication flow passage connecting the outer flow passage and the inner flow passage, wherein
- the inner flow passage has
- a plurality of branch passage portions being open at positions different from each other in a circumferential direction, on the outer circumferential side of the shaft body, and
- a main passage portion extending in an axial direction from an end surface on one side in the axial direction of the shaft body toward another side in the axial direction and having a merging end portion where the plurality of branch passage portions merge, on the other side in the axial direction.
Dependencies are inferred from the claim text.