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US 2017/0285667 A1Published application
Pressure regulating valve
AssigneeAisan Kogyo Kabushiki Kaisha
InventorMasahiro KOBAYASHI
Life of this patent
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Abstract
In a pressure regulating valve, a piston is provided, in an end on a side closer to a seat, with a recessed portion opening on the side closer to the seat, a valve element including: a tip portion contactable with the seat; a columnar retaining part inserted in the recessed portion; and a press-fit portion protruding radially outward from an outer peripheral surface of the retaining part and being press-fitted in an inner peripheral surface of the recessed portion. The press-fit portion has a spherical shape.
Claims4
A pressure regulating valve comprising:
- a pressure regulating chamber;
- a piston movable in an axial direction in response to pressure in the pressure regulating chamber;
- a valve element to be moved together with the piston;
- and
- a seat with which the valve element is contactable,
- wherein the piston includes a piston hollow portion in an end on a side closer to the seat, the piston hollow portion opening on the side closer to the seat,
- the valve element comprises:
- a tip portion contactable with the seat;
- a columnar portion inserted in the piston hollow portion;
- and
- a fit portion protruding radially outward from an outer peripheral surface of the columnar portion, the fit portion being fitted in an inner peripheral surface of the piston hollow portion, and
- the fit portion has a spherical shape.
9 more elements
Dependencies are inferred from the claim text.