Title:
HYDRAULIC SWITCH
Document Type and Number:
WIPO Patent Application WO/2019/176271
Kind Code:
A1
Abstract:
A hydraulic switch comprising: a diaphragm part (2); a terminal part (3) comprising a contact part (31) that faces the diaphragm part (2); an insulating ring (4) that surrounds the outer periphery of the terminal part (3); a conductive ring (5) that surrounds the outer periphery of the insulating ring (4); a conductive holder (6) that holds the conductive ring (5) and the diaphragm part (2); a contact chamber (8) that is defined and formed in a region between the diaphragm part (2) and the contact part (31); and a communication hole (9) that connects the inside and the outside of the contact chamber. In addition, the hydraulic switch comprises a liquid-permeable filter (10) that covers an opening on the exterior side of the communication hole (9). The presence of the filter (10) makes it possible to suppress the ingress of contamination from the communication hole (9) to the contact chamber (8) side.
Inventors:
RI SEI (JP)
ISHII SHIGERU (JP)
YAMANE NOBUFUMI (JP)
ISHII SHIGERU (JP)
YAMANE NOBUFUMI (JP)
Application Number:
PCT/JP2019/001178
Publication Date:
September 19, 2019
Filing Date:
January 17, 2019
Export Citation:
Assignee:
JATCO LTD (JP)
International Classes:
H01H35/34
Domestic Patent References:
| WO2018016478A1 | 2018-01-25 |
Foreign References:
| JP2015220210A | 2015-12-07 | |||
| JPH0935601A | 1997-02-07 | |||
| JPS61119223U | 1986-07-28 |
Attorney, Agent or Firm:
KOBAYASHI, Hiromichi et al. (JP)
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