Valve device and method for manufacturing the same
AssigneeDenso Corporation
InventorsTakehiro Sugawara, Yuichiro Moritani
Life of this patent
Estimating the term…
Abstract
Shaft is rotationally driven, and a valve body rotates together with the shafts and has a cylindrical surface on an outer peripheral surface. A housing has a valve chamber in which the valve body is rotatably accommodated, and the valve chamber has an opening opened or closed by the valve body. The outer peripheral surface is provided to be in a non-contact with the housing. The valve body has a valve seal surface for closing the opening by abutting on a predetermined part set in the housing when the opening is fully closed, and the valve seal surface is directed in the circumferential direction. The valve body has a core metal made of a metal, and the shafts are provided on both ends of the core metal, and a valve seal surface is made of a resin.
Claims11
A valve device, comprising:
- a shaft configured to be rotationally driven;
- a valve body configured to rotate integrally with the shaft and the valve body having at least a part of a cylindrical surface or a spherical surface on an outer peripheral surface which protrudes outwardly in a radial direction;
- and
- a housing having a valve chamber in which the valve body is housed and is rotatably supported, the valve chamber including a valve opening which is opened or closed by the valve body, wherein
- the outer peripheral surface of the valve body is in a non-contact with the housing,
- the valve body has the valve seal surface for closing the valve opening by abutting on a predetermined part set in the housing when the opening is fully closed, and the valve seal surface is provided on the outer peripheral surface and is directed in a circumferential direction,
- the valve body has a resin portion made of a resin, and a core metal made of a metal for supporting the resin portion, and
- the shaft is provided on both ends of the core metal in the axial direction of the core metal and the valve seal surface is provided on the resin portion.
A method for manufacturing a valve device including a shaft configured to be rotationally driven, a valve body configured to rotate integrally with the shaft and the valve body having at least a part of a cylindrical surface or a spherical surface on an outer peripheral surface which protruding outwardly in the radial direction, and a housing having a valve chamber in which the valve body is housed and rotatably supported, the valve chamber including a valve opening which is opened or closed by the valve body, the method comprising:
- providing the valve body in such a manner that the outer peripheral surface is in a non-contact with the housing;
- providing the valve body having the valve seal surface for closing the valve opening by abutting on a predetermined part set in the housing when the opening is fully closed, and the valve seal surface being provided on the outer peripheral surface and is directed in the circumferential direction;
- providing the valve body having a resin portion made of a resin, and a core metal made of a metal for supporting the resin portion;
- fixing the shaft to both ends in the axial direction of the core metal;
- and
- providing the valve seal surface with resin.
Dependencies are inferred from the claim text.