Title:
LUBRICATING OIL DEGRADATION SENSOR AND MACHINE PROVIDED THEREWITH
Document Type and Number:
WIPO Patent Application WO/2013/162031
Kind Code:
A1
Abstract:
Provided is a lubricating oil degradation sensor which is installed in a machine body in order to detect the degradation of lubricating oil in the machine body. The lubricating oil degradation sensor is provided with: a circuit substrate on which a light emitting element and a color light receiving element are mounted; a gap formation member in which an oil gap through which the lubricating oil enters is formed; a support member which supports the circuit substrate and the gap formation member; a fixed member which is affixed to the machine body; and a shock absorbing member which is disposed between the support member and the fixed member and absorbs a shock. The gap formation member transmits light emitted by the light emitting member therethrough. The oil gap is disposed on an optical path from the light emitting element to the color light receiving element. The support member is provided with a substrate mounting part to which the circuit substrate is mounted. At least part of the shock absorbing member is disposed in a substrate mounting part surrounding space that is formed to surround the substrate mounting part between the fixed member and the support member.
Inventors:
NAKAMURA KOJI (JP)
SHIMADA HIDESHI (JP)
SHIMADA HIDESHI (JP)
Application Number:
PCT/JP2013/062500
Publication Date:
October 31, 2013
Filing Date:
April 26, 2013
Export Citation:
Assignee:
NABTESCO CORP (JP)
International Classes:
G01N21/27
Foreign References:
| JPH07146233A | 1995-06-06 | |||
| JPH0534562U | 1993-05-07 | |||
| JPH04242153A | 1992-08-28 | |||
| JPH09138196A | 1997-05-27 | |||
| JP2005156297A | 2005-06-16 | |||
| JPH11235097A | 1999-08-27 | |||
| JPH02111232A | 1990-04-24 | |||
| JPH0886751A | 1996-04-02 | |||
| JPH07146233A | 1995-06-06 | |||
| JPH10104160A | 1998-04-24 |
Other References:
TOMOHIKO YAMAGUCHI, METHOD OF DISCRIMINATING HUE OF CONTAMINANT WITHIN LUBRICANT, vol. 51, no. 1, March 2003 (2003-03-01), pages 81 - 88
TOMOMI HONDA: "DETERIORATION DIAGNOSIS OF LUBRICANT-INSPECTION TECHNOLOGY", JOURNAL OF JAPAN SOCIETY FOR PRECISION ENGINEERING, vol. 75, no. 3, 2009, pages 359 - 362, XP008149033, DOI: doi:10.2493/jjspe.75.359
TOMOMI HONDA: "DETERIORATION DIAGNOSIS OF LUBRICANT-INSPECTION TECHNOLOGY", JOURNAL OF JAPAN SOCIETY FOR PRECISION ENGINEERING, vol. 75, no. 3, 2009, pages 359 - 362, XP008149033, DOI: doi:10.2493/jjspe.75.359
Attorney, Agent or Firm:
HAMADA Yuriko et al. (JP)
Yuriko Hamada (JP)
Yuriko Hamada (JP)
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