Pipe joint and joint connection device
AssigneeNitta Corporation
InventorsMasafumi Hayashi, Shuichi Saga, Mizuho Hitotsubashi
Life of this patent
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Abstract
A pipe joint and a joint connection device have simpler configurations while preventing fluid leakage and absorbing misalignment of shaft centers. A pipe joint includes a male joint and a female joint into which the male joint is inserted. The male joint has a male joint main body and a cap that is fixed at a base end of the male joint main body, with a male joint O-ring interposed between the cap and the male joint main body. The cross-section diameter of the male joint O-ring is 3 to 10 mm, and a clearance-between the male joint main body and the cap is 3 to 13% of the cross-section diameter of the male joint O-ring.
Claims11
A pipe joint comprising a male joint fixed to a plate main body and a female joint into which the male joint is inserted,
- wherein the male joint has:
- a male joint main body;
- and
- a cap that is fixed at a base end of the male joint main body, with a male joint O-ring interposed between the cap and the male joint main body,
- wherein a cross-section diameter of the male joint O-ring is 3 to 10 mm,
- wherein a clearance between the male joint main body and the cap is 3 to 13% of the cross-section diameter of the male joint O-ring, and
- wherein the male joint O-ring seals a gap between the male joint main body and the cap.
A pipe joint comprising a male joint and a female joint that is connected to the male joint,
- wherein the male joint has:
- a cylindrical male joint main body having a leading end that is inserted into the female joint, and a base end on an opposite side of the leading end;
- a cap that is provided to cover the base end of the cylindrical male joint main body, the cap accommodating the cylindrical male joint main body such that the cylindrical male joint main body is movable in a radial direction relative to the cap;
- and
- a male joint O-ring that is provided between the cylindrical male joint main body and the cap, the male joint O-ring seals a gap between the cylindrical male joint main body and the cap;
- wherein a cross-section diameter of the male joint O-ring is 3 to 10 mm, and
- wherein the cylindrical male joint main body further has a male joint flange that is provided so as to protrude in the radial direction, and the male joint flange defines a minimum gap between the cylindrical male joint body and the cap in the radial direction that is 3 to 13% of the cross-section diameter of the male joint O-ring.
Dependencies are inferred from the claim text.