JPH03130551U - - Google Patents
Info
- Publication number
- JPH03130551U JPH03130551U JP3949090U JP3949090U JPH03130551U JP H03130551 U JPH03130551 U JP H03130551U JP 3949090 U JP3949090 U JP 3949090U JP 3949090 U JP3949090 U JP 3949090U JP H03130551 U JPH03130551 U JP H03130551U
- Authority
- JP
- Japan
- Prior art keywords
- isolation
- disc spring
- bush
- diameter
- small
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000002955 isolation Methods 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 2
- 239000003566 sealing material Substances 0.000 claims description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims 6
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims 2
- 239000004020 conductor Substances 0.000 claims 1
- 229910052697 platinum Inorganic materials 0.000 claims 1
Landscapes
- Measuring Oxygen Concentration In Cells (AREA)
Description
第１図は本考案の一実施例を示す部分拡大断面
図、第２図は他の実施例の部分拡大断面図、第３
図は従来の酸素センサの全体断面図である。
１……ホルダ、６……アイソレーシヨンブツシ
ユ、６ａ……小径基端部、７……キヤツプ、８…
…皿ばね、９……シーリングラバー、２０，２１
……ワツシヤ、２２……グラフアイト、Ｓ……リ
ング状シール材。
Fig. 1 is a partially enlarged sectional view showing one embodiment of the present invention, Fig. 2 is a partially enlarged sectional view of another embodiment, and Fig. 3 is a partially enlarged sectional view showing one embodiment of the present invention.
The figure is an overall sectional view of a conventional oxygen sensor. DESCRIPTION OF SYMBOLS 1...Holder, 6...Isolation bush, 6a...Small diameter base end, 7...Cap, 8...
...Disc spring, 9...Sealing rubber, 20, 21
... Watshiya, 22... Graphite, S... Ring-shaped sealing material.
Claims (1)
閉塞されたジルコニアチユーブと、一端が該チユ
ーブの開口端に導電体を介して接合されるアイソ
レーシヨンブツシユと、前記ジルコニアチユーブ
とアイソレーシヨンブツシユとの接合部を覆つて
該アイソレーシヨンブツシユに嵌合されジルコニ
アチユーブ外周壁に固定されるホルダと、一端部
がホルダの基端部外周面に嵌合固定され他端部で
前記アイソレーシヨンブツシユの小径基端部に取
り付けた皿ばねとシール部材を保持する円筒状の
外ケースと、を含んで構成される酸素センサにお
いて、外ケース内側のアイソレーシヨンブツシユ
の小径基端部周りに、一対のワツシヤと該ワツシ
ヤ間に介在されるグラフアイトとからなる三層構
造のリング状シール材を、前記皿ばねとアイソレ
ーシヨンブツシユの小径基端部の段状基部面との
間に挟持固定して配設し、皿ばね側のワツシヤの
外径をグラフアイトの外径よりも小さく形成した
ことを特徴とする酸素センサ。 A zirconia tube with platinum electrodes formed on a portion of its inner and outer surfaces and a closed tip, an isolation bush whose one end is joined to the open end of the tube via a conductor, and the zirconia tube and the isolation bush. A holder that is fitted to the isolation bush and fixed to the outer circumferential wall of the zirconia tube while covering the joint with the bush; In an oxygen sensor that includes a disc spring attached to the small-diameter proximal end of the isolation bush and a cylindrical outer case that holds a sealing member, there is a disc spring attached to the small-diameter proximal end of the isolation bush inside the outer case. , a ring-shaped sealing material having a three-layer structure consisting of a pair of washers and graphite interposed between the washers is held between the disc spring and the stepped base surface of the small diameter base end of the isolation bushing. An oxygen sensor that is fixedly disposed and is characterized in that the outer diameter of the washer on the disc spring side is smaller than the outer diameter of graphite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3949090U JPH03130551U (en) | 1990-04-16 | 1990-04-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3949090U JPH03130551U (en) | 1990-04-16 | 1990-04-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03130551U true JPH03130551U (en) | 1991-12-27 |
Family
ID=31548445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3949090U Pending JPH03130551U (en) | 1990-04-16 | 1990-04-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03130551U (en) |
-
1990
- 1990-04-16 JP JP3949090U patent/JPH03130551U/ja active Pending