Title:
THERMOSTAT DEVICE AND METHOD FOR MANUFACTURING THERMOSTAT DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/163070
Kind Code:
A1
Abstract:
Provided are a thermostat device and a method for manufacturing the same, with which it is possible to minimize any increase in size of the thermostat device, and in which a seal member is easily assembled and cost can be minimized. This thermostat device comprises a housing (1) that is attached in an attachment hole of a mating member and that has a flow path for a coolant formed therein, a seal member (25) that creates a liquid-tight seal between the mating member and the housing (1), a thermo element (17) that expands and contracts in accordance with the temperature of the coolant, a valve body (15) that opens and closes the flow path due to the expansion and contraction of the thermo element (17), and a coil spring (16) that urges the valve body (15) in a closing direction, the housing (1) having formed therein an irregular annular groove (24) into which the seal member (25) fits, and the seal member (25) having a perfectly circular shape in a state of having a natural length.
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Inventors:
NISHIMURA TETSUYA (JP)
NUMATA MASAYUKI (JP)
NUMATA MASAYUKI (JP)
Application Number:
PCT/JP2021/041520
Publication Date:
August 04, 2022
Filing Date:
November 11, 2021
Export Citation:
Assignee:
NIPPON THERMOSTAT KK (JP)
International Classes:
F16K31/68
Domestic Patent References:
| WO2020203040A1 | 2020-10-08 | |||
| WO2015198674A1 | 2015-12-30 |
Foreign References:
| JP2005156307A | 2005-06-16 |
Attorney, Agent or Firm:
KINOSHITA Shigeru (JP)
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