Valve and valve assembly method
AssigneeEagle Industry Co., Ltd.
InventorsKenta FURUKAWA, Naoki NISHIMURA, Yu DEGUCHI
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Abstract
A valve capable of maintaining a stable fixed state between a retainer and a casing for a long period of time and a method of assembling the valve are provided. A retainer includes a cylindrical portion which has a seat surface for a biasing member and an expanded diameter portion which expands radially outward in a tapered shape from one axial end of the cylindrical portion on a side of a casing, and a caulking end is locked to an outer peripheral portion of the expanded diameter portion while a connection portion between the cylindrical portion and the expanded diameter portion is elastically deformable.
Claims9
A valve, comprising:
- a casing;
- a valve body that is operable inside the casing;
- a biasing member that biases the valve body;
- and
- a retainer that holds the biasing member,
- wherein the retainer is caulked and fixed to the casing by a caulking end provided at one axial end portion of the casing,
- wherein the retainer includes a cylindrical portion which has a seat surface of the biasing member and an expanded diameter portion which expands radially outward in a tapered shape from one axial end of the cylindrical portion on a side of the casing, and
- wherein the caulking end is locked to an outer peripheral portion of the expanded diameter portion while a connection portion between the cylindrical portion and the expanded diameter portion is elastically deformable.
A method of assembling a valve including a casing, a valve body operable inside the casing, a biasing member that biases the valve body, and a retainer that holds the biasing member, the retainer being caulked and fixed to the casing by a caulking end provided at one axial end portion of the casing, the retainer including a cylindrical portion which has a seat surface of the biasing member and an expanded diameter portion which expands radially outward in a tapered shape from one axial end of the cylindrical portion on a side of the casing,
- wherein the method comprising a step of locking the caulking end to an outer peripheral surface of the expanded diameter portion while a connection portion between the cylindrical portion and the expanded diameter portion is elastically deformable.
Dependencies are inferred from the claim text.