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US 10,378,670 B2Granted
Solenoid valve having ventilation structure
AssigneeHyundai Kefico Corporation
InventorsHyung Jun Kim, Young Keun Kim, Ho Yeon Kim, Byung Sam So, Dong Ryul Lee
Life of this patent
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Abstract
A solenoid valve is provided. The solenoid valve is used to control the flow of fluid in various technical fields and products including a transmission installed in a vehicle. The solenoid valve includes a ventilation passage connecting in flow communication the interior and exterior of an operating chamber, configured to operate an armature.
Claims15
A solenoid valve comprising:
- a valve body having a plurality of ports and passages through which the ports communicate with each other;
- a coil generating a solenoid magnetic field when electric power is supplied thereto;
- a pole core forming a magnetic path of the solenoid magnetic field, and having an operating chamber disposed therein;
- an armature disposed within the operating chamber and configured to be actuated by the solenoid magnetic field;
- and
- a bobbin having a cylindrical bobbin body, a first flange formed at a first end of the bobbin body, and a second flange formed at a second end of the bobbin body, the coil being disposed external to the bobbin body, the pole core configured to be inserted and indisposed within the bobbin body, the second flange having an aperture through which the operating chamber communicates with an exterior of the bobbin body,
- wherein the first flange of the bobbin has an aperture, and a circumferential passage connected to the aperture is formed in a face of the first flange.
4 more elements
A solenoid valve comprising:
- a valve body having a plurality of ports and passages through which the ports communicate with each other;
- a coil configured to generate a solenoid magnetic field when electric power is supplied thereto;
- a magnetizable body forming a magnetic path of the solenoid magnetic field, and having an operating chamber and at least one flange;
- an armature disposed within the operating chamber and configured to be actuated by the solenoid magnetic field;
- a bobbin having a cylindrical bobbin body, a first flange formed at a first end of the bobbin body, and a second flange formed at a second end of the bobbin body and having an aperture, the coil disposed on the exterior of the bobbin body, the magnetizable body being inserted and installed in the bobbin body;
- a housing that coupled the magnetizable body to the valve body and encloses the coil;
- and
- a ventilation passage having a circumferential passage connected to the aperture and circumferentially formed in a face of the first flange of the bobbin, and having an aperture formed in at least one of the flange of the magnetizable body and the second flange of the bobbin, the ventilation passage allowing an interior space in the operating chamber to communicate with an exterior of the housing therethrough.
5 more elements
Dependencies are inferred from the claim text.