Valve device

Patent metadata

Field	Value
Publication number	US-12523306-B2
Application number	US-202318469291-A
Country	US
Kind code	B2
Filing date	Sep 18, 2023
Priority date	Apr 21, 2021
Publication date	Jan 13, 2026
Grant date	Jan 13, 2026

Abstract

In a valve device, a housing has a mounting portion that contacts a back surface of a stationary disk which is opposite to a contact surface of the stationary disk while the contact surface is opposed to a rotor. One of the stationary disk and the mounting portion has a receiving groove that receives a gasket which seals a gap between the stationary disk and the mounting portion. The gasket has: two seal surfaces that are opposed to the stationary disk and the mounting portion, respectively; and at least one lateral projection that is opposed to a groove lateral surface of the receiving groove and projects toward the groove lateral surface. The gasket is press-fitted into the receiving groove in a state where the at least one lateral projection is in contact with the groove lateral surface.

First claim

What is claimed is:

1 . A valve device comprising:
a housing that forms a fluid passage at an inside of the housing, wherein the fluid passage is configured to conduct a fluid through the fluid passage; a stationary disk that is shaped in a plate form and is fixed at the inside of the housing, wherein the stationary disk has at least one passage hole which is configured to conduct the fluid through the at least one passage hole; a drive device that is configured to output a rotational force; a shaft that is configured to be rotated about a central axis, which is predetermined, by the rotational force; a rotor that is configured to increase or decrease an opening degree of the at least one passage hole in response to rotation of the shaft; and an urging member that is configured to urge the rotor against the stationary disk, wherein: the housing has a mounting portion that contacts a back surface of the stationary disk which is opposite to a contact surface of the stationary disk while the contact surface is opposed to the rotor; one of the stationary disk and the mounting portion has a receiving groove that has a bottom surface and two opposed lateral surfaces, all of which are formed integrally in one-piece in the receiving groove, wherein the two opposed lateral surfaces are opposed to each other and extend from the bottom surface, and the receiving groove receives a gasket which seals a gap between the stationary disk and the mounting portion; the gasket has:
two seal surfaces that are opposed to the stationary disk and the mounting portion, respectively; and
a plurality of lateral projections, each of which is opposed to a corresponding one of the two opposed lateral surfaces of the receiving groove and projects toward the corresponding one of the two opposed lateral surfaces, wherein the gasket is press-fitted into the receiving groove in a state where each of the plurality of lateral projections is in contact with the corresponding one of the two opposed lateral surfaces;
an inner ring that is placed on a radially outer side of the shaft and extends in a circumferential direction around the central axis;
an outer ring that is radially outwardly spaced from the inner ring and extends in the circumferential direction around the central axis; and
a plurality of ribs that respectively extend from the inner ring to the outer ring in a corresponding intersecting direction which intersects the circumferential direction;
the plurality of ribs include two ribs which are spaced from each other in the circumferential direction to interpose the at least one passage hole of the stationary disk between the two ribs; a first pair of lateral projections among the plurality of lateral projections are formed on an inner peripheral surface and an outer peripheral surface, respectively, of the outer ring and radially project away from each other at a location adjacent to one of two junctions where the outer ring is joined to the two ribs, wherein the first pair of lateral projections contact the two opposed lateral surfaces, respectively, of the receiving groove; and a second pair of lateral projections among the plurality of lateral projections are formed on the inner peripheral surface and the outer peripheral surface, respectively, of the outer ring and radially project away from each other at a location adjacent to another one of the two junctions, wherein the second pair of lateral projections contact the two opposed lateral surfaces, respectively, of the receiving groove.

2 . The valve device according to claim 1 , wherein:
a dimension of the gasket, which is measured in an axial direction of the shaft, is defined as a height dimension; a dimension of the gasket, which is measured in a projecting direction of one of the plurality of lateral projections projected at the gasket, is defined as a full-width dimension; a dimension, which is obtained by subtracting a width dimension of at least one of the plurality of lateral projections in a cross-section of the gasket from the full-width dimension, is defined as a main-body width dimension; and in the gasket, the height dimension is larger than a groove depth of the receiving groove and the main-body width dimension, and the full-width dimension is larger than a groove width of the receiving groove.

3 . The valve device according to claim 1 , wherein each of the two seal surfaces has at least two seal projections which project in an axial direction of the shaft.

4 . The valve device according to claim 1 , wherein:
a third pair of lateral projections among the plurality of lateral projections are formed on an inner peripheral surface and an outer peripheral surface, respectively, of the inner ring and radially project away from each other at a location adjacent to one of two junctions where the inner ring is joined to the two ribs, wherein the third pair of lateral projections contact the two opposed lateral surfaces, respectively, of the receiving groove; and a fourth pair of lateral projections among the plurality of lateral projections are formed on the inner peripheral surface and the outer peripheral surface, respectively, of the inner ring and radially project away from each other at a location adjacent to another one of the two junctions where the inner ring is joined to the two ribs, wherein the fourth pair of lateral projections contact the two opposed lateral surfaces, respectively, of the receiving groove.

Assignees

• Denso Corp

Inventors

• Sano Ryo
• Kimura Shota
• Mizunuma Takehito

Classifications

• F16K3/08

  with circular plates rotatable around their centres · CPC title

• F16J15/10

  with non-metallic packing · CPC title

• F16K31/041

  for rotating valves (F16K31/055 takes precedence) · CPC title

• F16K27/045

  with pivotal obturating members · CPC title

• F16K11/074 Primary

  with flat sealing faces · CPC title