Pipe joint
AssigneeSMC Corporation
InventorsYoshimoto Taneya, Taku Tomita, Shuichi Saito
Life of this patent
Estimating the term…
Abstract
A pipe joint has a tube for fluid detachably fitted thereto, and is connected to a hydraulic device such as a cylinder. The pipe joint is provided with a resin body into which the tube for fluid is inserted, and a metal body which can rotate relative to the resin body. The resin body comprises orifices which each have a different opening diameter, and, as a result of the rotation of the resin body relative to the metal body, the orifices can be disposed in a connection part providing a connection path between the tube for fluid and the hydraulic device.
Claims2
A pipe joint that is connected to a fluid pressure device, comprising:
- a body in which a tube is inserted;
- and
- an attachment/detachment mechanism disposed in an interior of the body and which is configured to attach and detach the tube, wherein:
- the body includes
- a first body which is made of resin and in which the tube is inserted,
- a second body which is made of metal, connected to the fluid pressure device, and rotatable relatively with respect to the first body,
- the first body includes
- a large diameter cylindrical section in which the attachment/detachment mechanism is incorporated,
- an intermediate cylindrical section which is smaller in diameter than the large diameter cylindrical section, and into which a distal end of the tube is inserted through the large diameter cylindrical section,
- a bottomed cylindrical section which is smaller in diameter than the intermediate cylindrical section,
- the large diameter cylindrical section, the intermediate cylindrical section, and the bottomed cylindrical section are formed integrally in this order toward the second body,
- the bottomed cylindrical section and the intermediate cylindrical section are inserted into the second body,
- in the bottomed cylindrical section, an orifice part through which the tube and the fluid pressure device communicate is disposed rotatably, and disposed away from the tube and the attachment/detachment mechanism;
- and
- an opening dimension of an orifice of the orifice part that communicates with a communicating portion between the tube and the fluid pressure device is changed depending on a rotational angular position thereof,
- in the bottomed cylindrical section, a plurality of orifices the opening diameters of which differ from each other respectively, are disposed at equal intervals and have predetermined angles from one another respectively about a center of rotation of the first body,
- grooves are formed on an outer circumference of the intermediate cylindrical section at positions corresponding to angular positions of the orifices,
- a projection is formed on an inner circumference of the second body and maintains a plurality of specified angular positions of the first body and the second body by engaging with one of the grooves.
Dependencies are inferred from the claim text.