Title:
OIL FILTER DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/176496
Kind Code:
A1
Abstract:
This oil filter device comprises: a filter case that has a case body and a conductive lid for covering a case opening provided to the case body; a filter element that is disposed in a main flow channel provided to the interior space of the filter case; a conductive valve body that is disposed in a bypass flow channel provided to the interior space; a conductive valve shaft that is supported by the valve body via a valve insulation member; a conductive valve disc that is movably supported by the valve shaft and that closes the bypass flow channel by coming into contact with the valve body; a valve elastic member that generates an elastic force so as to cause the valve disc to come into contact with the valve body; a conductive input member that is supported by the lid via a case insulation member; a conductive relaying elastic member that is connected to the input member; a conductive relaying member that is fixed to the valve shaft and connected to the relaying elastic member; and a controller that, by supplying a current to the valve disc via the input member, determines, on the basis of the electricity flowing state between the valve disc and the valve body, whether the bypass flow channel is closed or not.
Inventors:
KAGEYAMA MASATO (JP)
SETO SHOUTA (JP)
SETO SHOUTA (JP)
Application Number:
PCT/JP2023/007960
Publication Date:
September 21, 2023
Filing Date:
March 03, 2023
Export Citation:
Assignee:
KOMATSU MFG CO LTD (JP)
International Classes:
B01D35/02; B01D29/11; F15B21/041
Domestic Patent References:
| WO2017191852A1 | 2017-11-09 |
Foreign References:
| JP2009519397A | 2009-05-14 | |||
| JP2017006831A | 2017-01-12 |
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (JP)
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