Title:
LIQUID-LEVEL DETECTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/111132
Kind Code:
A1
Abstract:
A liquid-level detection device (100) is provided with an ultrasonic oscillating element (11), a case (15), a metal tube (22), and a connecting member (13). The case forms an accommodating chamber (16) for accommodating the ultrasonic oscillating element. The metal tube forms a propagation route (4) for ultrasonic waves, the propagation route extending from a bottom part (151) of the case. The connecting member is electrically connected to the ultrasonic oscillating element, is attached to the ultrasonic oscillating element, and extends toward a cover part (152) of the case. The metal tube has an extension tube part (222) extending from a portion (221) of the metal tube that forms the propagation route. At least a portion of the connecting member is present inside the extension tube part.
Inventors:
AKATSUKA KUNIO (JP)
MIYAGAWA ISAO (JP)
MIYAGAWA ISAO (JP)
Application Number:
PCT/JP2019/046402
Publication Date:
June 04, 2020
Filing Date:
November 27, 2019
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
G01F23/296
Foreign References:
| JP2014224818A | 2014-12-04 | |||
| DE102009046144A1 | 2011-05-19 | |||
| JP2005017010A | 2005-01-20 | |||
| JPH05322631A | 1993-12-07 | |||
| JPS54161969A | 1979-12-22 |
Attorney, Agent or Firm:
NAGOYA INTERNATIONAL PATENT FIRM (JP)
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