Patent ID: 9133942
Filing Date: 2015-09-15
Classification: F16K,G05D,Y10T

Abstract:
1. A valve structure for a fluid pressure device having ports for supplying and discharging a pressure fluid, and which is capable of adjusting a flow condition of the pressure fluid that flows in an interior of a housing through the ports, comprising: a casing comprising a body of rotation about an axis to define an interior space radially therein, the interior space being exteriorly limited in a radial direction by the body of rotation, the casing being disposed displaceably in the interior of the housing; an annular seal member disposed in the interior space of the body of rotation, and which is seatable on a valve seat formed in the housing; a retaining member disposed in the interior space of the body of rotation, and which has a first connector projecting in an axial direction of the body of rotation and retains the seal member between the retaining member and the body of rotation of the casing, wherein the first connector is inserted into a second connector of the casing, the second connector projecting in the axial direction of the body of rotation, and is integrally connected to the body of rotation; and a stem inserted in the first connector that is inserted into the second connector, wherein the casing and the seal member are displaceable via the stem in directions to approach toward, and separate away from, the valve seat, wherein the casing is shaped to permit insertion of the seal member and comprises a seal retainer capable of retaining the seal member disposed therein, the retaining member being provided at an inner circumferential side of the seal retainer, and wherein the retaining member comprises a tapered part that is sloped to gradually expand in diameter in a direction opposite to an insertion direction of the seal member with respect to the casing, and wherein, when the retaining member is inserted into the casing after the seal member, the seal member is sandwiched and gripped between the tapered part and the seal retainer.