Title:
METHOD OF PRODUCING GAS SENSOR AND GAS SENSOR
Document Type and Number:
WIPO Patent Application WO/2005/066617
Kind Code:
A1
Abstract:
A gas sensor in which damage to a lead wire can be prevented, and in which a crack in an elastic seal member can be prevented even if the elastic member is thermally expanded. The gas sensor is constructed by using a seal, as the elastic seal member, having a small diameter section and a body section positioned more on the head side than the small diameter section and having an outer diameter greater than that of the small diameter section. The elastic seal member is installed such that the entire part of the body section and the head side of the small diameter section are positioned inside an outer tube member, and that the outer peripheral surface of the small diameter section (circular column section) straddles, relative to the outer tube member when seen in the axis direction of the gas sensor, the rear end of the outer tube member. Further, a gap (S) is formed between the outer peripheral surface of the small diameter section and the rear end of the outer tube member. It is preferable from the view point of more effectively restricting damage to a lead wire that the length La in the axis direction between the rear end of the outer tube member and the peripheral edge of a rear end surface of the small diameter section is set to 0.6 mm or greater.
Inventors:
AKATSUKA SHOJI
OGAWA KOUJI
IMAEDA KIYOHARU
KAWAI NOBUO
SHINKAI OSAMU
OGAWA KOUJI
IMAEDA KIYOHARU
KAWAI NOBUO
SHINKAI OSAMU
Application Number:
PCT/JP2005/000031
Publication Date:
July 21, 2005
Filing Date:
January 05, 2005
Export Citation:
Assignee:
NGK SPARK PLUG CO (JP)
AKATSUKA SHOJI
OGAWA KOUJI
IMAEDA KIYOHARU
KAWAI NOBUO
SHINKAI OSAMU
AKATSUKA SHOJI
OGAWA KOUJI
IMAEDA KIYOHARU
KAWAI NOBUO
SHINKAI OSAMU
International Classes:
G01N27/407; (IPC1-7): G01N27/409; G01N27/41; G01N27/419; G01N27/416
Foreign References:
| JP2003194764A | 2003-07-09 | |||
| JPH042959A | 1992-01-07 | |||
| DE19703458A1 | 1997-07-31 | |||
| JP2000081412A | 2000-03-21 | |||
| JPH11271254A | 1999-10-05 | |||
| JPH0815214A | 1996-01-19 | |||
| JPH10332627A | 1998-12-18 |
Other References:
See also references of EP 1703278A4
Attorney, Agent or Firm:
Hashimoto, Takeshi c/o Shiga, Patent Office (Ekisaikai Bldg. 1-29, Akashi-ch, Chuo-ku Tokyo 44, JP)
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