JPH081493Y2 - Oxygen sensor - Google Patents
Oxygen sensorInfo
- Publication number
- JPH081493Y2 JPH081493Y2 JP1991020969U JP2096991U JPH081493Y2 JP H081493 Y2 JPH081493 Y2 JP H081493Y2 JP 1991020969 U JP1991020969 U JP 1991020969U JP 2096991 U JP2096991 U JP 2096991U JP H081493 Y2 JPH081493 Y2 JP H081493Y2
- Authority
- JP
- Japan
- Prior art keywords
- oxygen sensor
- oxygen
- housing
- sensor element
- sensor
- 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.)
- Expired - Lifetime
Links
Landscapes
- Measuring Oxygen Concentration In Cells (AREA)
- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本考案は、被測定ガスの酸素濃度
に応じて電極間に起電力を生じる酸素検知部または被測
定ガスの酸素濃度に応じて電気抵抗が変化する酸素検知
部を一端に形成されるセンサ素子と、該センサ素子の他
端に設けられ前記電極に接続される電極端子部と、前記
センサ素子を収納する金属製収納部材と、前記電極端子
部に電気的に導通する雌コンタクトと、該雌コンタクト
を前記金属製収納部材より電気絶縁するとともに該雌コ
ンタクトを収納するセラミックハウジング等よりなる酸
素センサの改良に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is based on an oxygen detecting part which produces an electromotive force between electrodes depending on the oxygen concentration of the gas to be measured or an oxygen detecting part whose electric resistance changes depending on the oxygen concentration of the gas to be measured. A sensor element formed on the sensor element, an electrode terminal portion provided at the other end of the sensor element and connected to the electrode, a metal housing member for housing the sensor element, and electrically conducting to the electrode terminal portion. The present invention relates to an improvement of an oxygen sensor including a female contact and a ceramic housing that electrically insulates the female contact from the metal housing member and houses the female contact.
【０００２】[0002]
【従来の技術】この種の従来の酸素センサとしては、例
えば実開平２−146365号公報に開示されたものがあり、
その酸素センサは、雌コンタクトを所定以上の圧力でセ
ンサ素子の電極端子部に押圧するために、雌コンタクト
を絶縁材料からなるセラミックハウジングに収納し、セ
ラミックハウジングを押圧するばね部材のばね力により
雌コンタクトとセンサ素子の電極端子部とを電気的に接
続している。図６(a), (b)、図７はそれぞれ、従来の酸
素センサの断面図、図６(a) に示す酸素センサの外筒3
2、ブーツ33を組み込む前段階の状態を示す全体図、お
よび接点部材の分解斜視図である。図６(a), (b)に示す
酸素センサ20において、センサ素子22は板状形状をして
おり、金属製のハウジング24と、それに溶接固定された
円筒形の金属製の内筒26とに、セラミックサポータ28 ;
28a, 28b, 28cの間に充填されたタルク30によって固定
され、該タルク30によって気密封止されている。2. Description of the Related Art A conventional oxygen sensor of this type is disclosed in, for example, Japanese Utility Model Laid-Open No. 2-146365.
The oxygen sensor has a female contact housed in a ceramic housing made of an insulating material in order to press the female contact against the electrode terminal portion of the sensor element with a predetermined pressure or more. The contact and the electrode terminal portion of the sensor element are electrically connected. 6 (a), (b), and FIG. 7 are cross-sectional views of a conventional oxygen sensor and the outer cylinder 3 of the oxygen sensor shown in FIG. 6 (a), respectively.
2 is an overall view showing a state before the boot 33 is incorporated, and an exploded perspective view of a contact member. In the oxygen sensor 20 shown in FIGS. 6 (a) and 6 (b), the sensor element 22 has a plate shape, and includes a metal housing 24 and a cylindrical metal inner cylinder 26 fixed by welding. , Ceramic supporters 28;
It is fixed by a talc 30 filled between 28a, 28b, 28c, and is hermetically sealed by the talc 30.
【０００３】またセンサ素子の外部との電気的導通をと
るため、図７の接点部材48の分解斜視図から明らかなよ
うに、リード線36に接続される雌コンタクト41、雌コン
タクト41を収容する２分割のセラミックハウジング42、
押圧バネ44を固定する固定金具43、およびカシメリング
45よりなる接点部材48をセンサ素子22の電極端子部46に
挿入し、カシメリング45の外周をかしめることにより押
圧バネ44に変位を与え、雌コンタクト41を所定の圧力で
電極端子部46に押圧するよう構成している。さらにセン
サ素子22を外部環境から保護するために、金属製の外筒
32の図示下端部をハウジング24の上部環状突起34の外周
部に嵌合し、その全周にわたって溶接し気密に固定す
る。一方、外筒32の、ハウジング24と嵌合する下端部と
対抗する図示上端部には、リード線36が挿入されたゴム
栓38を外筒32によりかしめ固定し、これにより外筒32を
密閉しておく。Further, in order to establish electrical continuity with the outside of the sensor element, as is apparent from the exploded perspective view of the contact member 48 in FIG. 7, the female contact 41 and the female contact 41 connected to the lead wire 36 are accommodated. 2-part ceramic housing 42,
Fixing bracket 43 for fixing the pressing spring 44, and crimping ring
The contact member 48 made of 45 is inserted into the electrode terminal portion 46 of the sensor element 22, and the pressing spring 44 is displaced by caulking the outer periphery of the crimping ring 45, and the female contact 41 is attached to the electrode terminal portion 46 with a predetermined pressure. It is configured to press. Furthermore, in order to protect the sensor element 22 from the external environment, a metal outer cylinder
The lower end portion of 32 shown in the figure is fitted to the outer peripheral portion of the upper annular projection 34 of the housing 24, and the entire circumference thereof is welded and hermetically fixed. On the other hand, a rubber plug 38 having a lead wire 36 inserted therein is caulked and fixed to the upper end portion of the outer cylinder 32 shown in the figure, which is opposed to the lower end portion that fits with the housing 24, thereby sealing the outer cylinder 32. I'll do it.
【０００４】[0004]
【考案が解決しようとする課題】上記従来構造の酸素セ
ンサにおいては、センサ素子の電極端子部46と雌コンタ
クト41との接点部において、雌コンタクト41を所定以上
の圧力で電極端子部46に押圧するため、センサ素子22と
接点部材48との間の自由度が乏しく、酸素センサに外部
から過大な衝撃が加わった場合、ある程度大きな質量を
もっている接点部材48が振動する。その結果、センサ素
子22にセラミックサポータ28c の上端面を支点とする曲
げモーメントが加わり、この曲げモーメントの大きさに
よってはセラミックサポータ28c の上端面近傍でセンサ
素子22が折れてしまうことがあり、酸素センサとしての
機能を果たさなくなるという問題があった。In the oxygen sensor of the above-mentioned conventional structure, the female contact 41 is pressed against the electrode terminal portion 46 with a predetermined pressure or more at the contact portion between the electrode terminal portion 46 of the sensor element and the female contact 41. Therefore, the degree of freedom between the sensor element 22 and the contact member 48 is poor, and when an excessive shock is applied to the oxygen sensor from the outside, the contact member 48 having a relatively large mass vibrates. As a result, a bending moment with the upper end surface of the ceramic supporter 28c as a fulcrum is applied to the sensor element 22, and the sensor element 22 may be broken near the upper end surface of the ceramic supporter 28c depending on the magnitude of this bending moment. There was a problem that the function as a sensor could not be fulfilled.
【０００５】本考案の目的は上述した課題を解決し、酸
素センサに外部から過大な衝撃が加わった場合でも、素
子折れの発生を効果的に防止し得る酸素センサを提供し
ようとするものである。An object of the present invention is to solve the above-mentioned problems and to provide an oxygen sensor capable of effectively preventing the occurrence of element breakage even when an excessive impact is applied to the oxygen sensor from the outside. .
【０００６】[0006]
【課題を解決するための手段】本考案の酸素センサは、
被測定ガスの酸素濃度に応じて電極間に起電力を生じる
酸素検知部または被測定ガスの酸素濃度に応じて電気抵
抗が変化する酸素検知部を一端に形成されるセンサ素子
と、該センサ素子の他端に設けられ前記電極に接続され
る電極端子部と、前記センサ素子を収納する金属製収納
部材と、前記電極端子部に電気的に導通する雌コンタク
トと、該雌コンタクトを前記金属製収納部材より電気絶
縁するとともに該雌コンタクトを収納するセラミックハ
ウジングと、該セラミックハウジングを押圧するための
バネ部材と、該バネ部材に押圧力を発生させるカシメリ
ングとよりなる酸素センサにおいて、前記カシメリング
の一端を前記金属製収納部材の一端にオーバーラップさ
せるように延長し、このオーバーラップさせた部位で前
記カシメリングの一端と前記金属製収納部材の一端とを
固定するようにしたことを特徴とするものである。The oxygen sensor of the present invention comprises:
A sensor element formed at one end with an oxygen detection part that produces an electromotive force between electrodes according to the oxygen concentration of the gas to be measured or an oxygen detection part whose electrical resistance changes according to the oxygen concentration of the gas to be measured, and the sensor element An electrode terminal portion that is provided at the other end of the electrode terminal and that is connected to the electrode, a metal storage member that stores the sensor element, a female contact that is electrically connected to the electrode terminal portion, and the female contact that is made of the metal. An oxygen sensor comprising a ceramic housing electrically insulated from a housing member and housing the female contact, a spring member for pressing the ceramic housing, and a caulking ring for generating a pressing force on the spring member. One end of the caulking ring is extended so as to overlap with one end of the metal storage member, and the caulking ring is It is characterized in that so as to fix the one end of the the end metal receiving member.
【０００７】[0007]
【作用】本考案においては、カシメリングの一端を金属
製収納部材の一端にオーバーラップさせるように延長
し、このオーバーラップさせた部位で前記カシメリング
の一端と前記金属製収納部材の一端とを固定するように
したため、このオーバーラップさせた部位の機械的強度
が向上し、酸素センサに外部から過大な衝撃が加わった
場合でも、ある程度大きな質量をもっている接点部材が
センサ素子に曲げモーメントを与えるような振動が抑制
される。その結果、従来構造に比べて機械的強度が格段
に向上した、素子折れの発生しない酸素センサを得るこ
とができる。In the present invention, one end of the caulking ring is extended so as to overlap one end of the metal containing member, and one end of the caulking ring and one end of the metal containing member are overlapped at the overlapped portion. Since it is fixed, the mechanical strength of this overlapped part is improved, so that even if an external shock is applied to the oxygen sensor, the contact member with a certain large mass gives a bending moment to the sensor element. Vibration is suppressed. As a result, it is possible to obtain an oxygen sensor in which the mechanical strength is remarkably improved as compared with the conventional structure and element breakage does not occur.
【０００８】[0008]
【実施例】以下、本考案の実施例を図面に基づき詳細に
説明する。図１(a), (b)はそれぞれ、本考案の第１実施
例の酸素サンセの断面図、図１(a) に示す酸素センサの
外筒32、ブーツ33を組み込む前段階の状態を示す全体
図、図２は接点部材の分解斜視図である。図１(a), (b)
に示す酸素センサ20において、センサ素子22は板状形状
をしており、金属製のハウジング24と、それに溶接固定
された円筒形の金属製の内筒26とに、セラミックサポー
タ28 ; 28a, 28b, 28cの間に充填されたタルク30によっ
て固定され、該タルク30によって気密封止されている。
またセンサ素子22には、被測定ガスの酸素濃度に応じて
電極間に起電力を生じる酸素検知部または被測定ガスの
酸素濃度に応じて電気抵抗が変化する酸素検知部が形成
されており、さらにセンサ素子22は、外部との電気的導
通をとるため、図２の接点部材48の分解斜視図から明ら
かなように、リード線36に接続される雌コンタクト41、
雌コンタクト41を収容するとともに内筒26より電気絶縁
する２分割のセラミックハウジング42、押圧バネ44を固
定する固定金具43、およびカシメリング50よりなる接点
部材48をセンサ素子22の電極端子部46に挿入し、カシメ
リング50の、押圧バネ44に対応する図示上方の部分の外
周をかしめることにより押圧バネ44に変位を与え、雌コ
ンタクト41を所定の圧力で電極端子部46に押圧するよう
構成している。Embodiments of the present invention will be described in detail below with reference to the drawings. 1 (a) and 1 (b) respectively show a cross-sectional view of an oxygen sensor of the first embodiment of the present invention and a state before the outer cylinder 32 and boot 33 of the oxygen sensor shown in FIG. 1 (a) are assembled. 2 is an exploded perspective view of the contact member. Fig. 1 (a), (b)
In the oxygen sensor 20 shown in FIG. 2, the sensor element 22 has a plate shape, and a ceramic supporter 28; 28a, 28b is provided on a metal housing 24 and a cylindrical metal inner cylinder 26 welded and fixed thereto. , 28c are fixed by a talc 30 filled between them and hermetically sealed by the talc 30.
Further, the sensor element 22 is formed with an oxygen detector that produces an electromotive force between the electrodes according to the oxygen concentration of the gas to be measured or an oxygen detector whose electric resistance changes according to the oxygen concentration of the gas to be measured, Further, since the sensor element 22 is electrically connected to the outside, as is apparent from the exploded perspective view of the contact member 48 of FIG. 2, the female contact 41 connected to the lead wire 36,
A contact member 48 composed of a two-part ceramic housing 42 for accommodating the female contact 41 and electrically insulating from the inner cylinder 26, a fixing bracket 43 for fixing the pressing spring 44, and a caulking ring 50 is provided on the electrode terminal portion 46 of the sensor element 22. By inserting and crimping the outer periphery of the upper part of the caulking ring 50 corresponding to the pressing spring 44 in the drawing, the pressing spring 44 is displaced to press the female contact 41 against the electrode terminal portion 46 with a predetermined pressure. are doing.
【０００９】ここで、カシメリング50は、その図示下方
の部分が内筒26にオーバーラップするように全長を設定
されており、このオーバーラップした部位においてカシ
メリング50の外周をかしめることにより接点部材48の構
成要素としてのカシメリング50と内筒26とが固定され、
つまりは接点部材48がカシメリング50により内筒26に固
定されることになる。Here, the caulking ring 50 is set so that its lower portion in the drawing overlaps with the inner cylinder 26, and the caulking ring 50 is caulked at the overlapping portion to contact the contact points. The caulking ring 50 and the inner cylinder 26, which are components of the member 48, are fixed,
That is, the contact member 48 is fixed to the inner cylinder 26 by the crimping ring 50.
【００１０】また図１(a), (b)の酸素センサ20におい
て、センサ素子22を外部環境から保護するために、金属
製の外筒32の図示下端部をハウジング24の上部環状突起
34の外周部に嵌合し、その全周にわたって溶接し気密に
固定する。一方、外筒32のハウジング24と嵌合する下端
部と対向する図示上端部には、リード線36が挿入された
ゴム栓38を外筒32によりかしめ固定し、これにより外筒
32を密閉しておく。さらに、外筒32の外側にブーツ33を
組み込み、図１(a) の構造とする。In the oxygen sensor 20 of FIGS. 1 (a) and 1 (b), in order to protect the sensor element 22 from the external environment, the lower end portion of the metal outer cylinder 32 shown in the figure is an upper annular projection of the housing 24.
It is fitted to the outer circumference of 34 and welded over the entire circumference to be airtightly fixed. On the other hand, a rubber plug 38 into which a lead wire 36 is inserted is caulked and fixed to the upper end portion of the outer cylinder 32, which is shown in FIG.
Keep 32 sealed. Further, the boot 33 is incorporated on the outer side of the outer cylinder 32 to form the structure shown in FIG.
【００１１】上述した構造によれば、雌コンタクト41、
２分割のセラミックハウジング42、固定金具43、押圧バ
ネ44、およびカシメリング50よりなる接点部材48は、カ
シメリング50を介して内筒26に固定されることになり、
酸素センサ20に外部から過大な衝撃が加わった場合で
も、ある程度大きな質量をもった接点部材48がセンサ素
子22に曲げモーメントを与えるように振動することはな
くなり、従来例では素子折れしていた程度の衝撃力にお
いて素子折れが発生することがなくなった。According to the above structure, the female contacts 41,
The contact member 48 including the two-part ceramic housing 42, the fixing bracket 43, the pressing spring 44, and the crimping ring 50 is fixed to the inner cylinder 26 via the crimping ring 50.
Even when an external shock is applied to the oxygen sensor 20, the contact member 48 having a relatively large mass does not vibrate so as to give a bending moment to the sensor element 22, and the element breaks in the conventional example. The element no longer breaks due to the impact force.
【００１２】従来構造および上述した本考案の第１実施
例による構造の酸素センサについてインパクト試験を行
なった結果を図３(a) に比較して示す。このインパクト
試験は、図３(b) に示すように、鋼鉄製のブロックに酸
素センサ20を下端部が貫入される状態でとりつけ、ブロ
ックに衝撃力をステップアップで加え、素子折れの発生
する衝撃力を計測するように行う。この図３(a) から明
らかなように、本考案による構造に変更することにより
耐衝撃性が著しく改善されることになる（従来構造にお
いて最も素子折れの度数が大きい衝撃力をＡとすると、
本考案構造では4Aとなり、従来構造では素子折れしてい
た衝撃力領域において素子折れは全く発生しない) 。The results of an impact test conducted on the oxygen sensor having the conventional structure and the structure according to the first embodiment of the present invention described above are shown in comparison with FIG. 3 (a). In this impact test, as shown in Fig. 3 (b), the oxygen sensor 20 was attached to the steel block with the lower end part penetrating, and the impact force was applied to the block in a step-up manner to generate the impact of element breakage. Do as if to measure force. As is clear from FIG. 3 (a), the impact resistance is remarkably improved by changing to the structure according to the present invention (where A is the impact force with the highest frequency of element breakage in the conventional structure,
(4A in the structure of the present invention, and no element breakage occurs in the impact force region where the conventional structure had a breakage).
【００１３】図４(a), (b), (c) はそれぞれ、本考案の
第２実施例の酸素センサの断面図、図４(a) に示す酸素
センサの外筒32、ブーツ33を組み込む前段階の状態を示
す全体図およびその酸素センサに用いる円筒形波バネ51
の斜視図である。この第２実施例は、カシメリング50の
端部を延長して内筒26にオーバーラップさせる代わり
に、カシメリング50の外周に円筒形波バネ51を装着する
ことによりカシメリング50の端部を実質的に延長して内
筒26にオーバーラップさせ、カシメリング50を内筒26に
直接かしめる代わりに円筒形波バネ51を介してカシメリ
ング50と内筒26とを固定するように構成されており、図
４(a), (b)に示すようにカシメリング50のかしめ後の形
状が第１実施例と異なる。なおその他の部分は第１実施
例と同様に構成する。この第２実施例においても接点部
材48の振動抑制機能が発揮され、第１実施例と同様の作
用効果が得られる。FIGS. 4 (a), (b) and (c) are sectional views of an oxygen sensor according to a second embodiment of the present invention, respectively showing an outer cylinder 32 and a boot 33 of the oxygen sensor shown in FIG. 4 (a). Overall view showing the state before installation and cylindrical wave spring 51 used for the oxygen sensor
It is a perspective view of. In this second embodiment, instead of extending the end portion of the crimp ring 50 and overlapping the inner cylinder 26, the end portion of the crimp ring 50 is attached by mounting a cylindrical wave spring 51 on the outer circumference of the crimp ring 50. It is configured to substantially extend and overlap the inner cylinder 26, and instead of crimping the crimping ring 50 directly to the inner cylinder 26, the crimping ring 50 and the inner cylinder 26 are fixed via a cylindrical wave spring 51. As shown in FIGS. 4 (a) and 4 (b), the caulking ring 50 has a different shape after being swaged from the first embodiment. The other parts are constructed in the same manner as in the first embodiment. The vibration suppressing function of the contact member 48 is exerted also in the second embodiment, and the same effect as that of the first embodiment is obtained.
【００１４】図５(a), (b)はそれぞれ、本考案の第３実
施例の酸素センサの断面図、および図５(a) に示す酸素
センサの外筒32、ブーツ33を組み込む前段階の状態を示
す全体図である。この第３実施例はカシメリング52の形
状をカシメリング50とは異なるものにして、その図示下
端部にスポット溶接用の足53を複数本（例えば４本）形
成し、この足53を内筒26にスポット溶接54で固定するよ
うに構成されており、その他の部分は第１実施例と同様
に構成する。この第３実施例においても接点部材48の振
動抑制機能が発揮され、第１実施例と同様の作用効果が
得られる。5 (a) and 5 (b) are cross-sectional views of an oxygen sensor according to a third embodiment of the present invention, respectively, and a pre-stage in which the outer cylinder 32 and boot 33 of the oxygen sensor shown in FIG. 5 (a) are assembled. It is a general view showing the state of. In the third embodiment, the caulking ring 52 has a different shape from the caulking ring 50, and a plurality of spot welding legs 53 (for example, four) are formed at the lower end portion of the drawing, and the legs 53 are formed into an inner cylinder. It is structured such that it is fixed to 26 by spot welding 54, and other parts are structured in the same manner as in the first embodiment. The vibration suppressing function of the contact member 48 is exerted also in the third embodiment, and the same effect as that of the first embodiment can be obtained.
【００１５】[0015]
【考案の効果】以上の説明から明らかなように、本考案
の酸素センサによれば、カシメリングの一端を金属製収
納部材の一端にオーバーラップさせるように延長し、こ
のオーバーラップさせた部位で前記カシメリングの一端
と前記金属製収納部材の一端とを固定するようにしたた
め、このオーバーラップさせた部位の機械的強度が向上
し、酸素センサに外部から過大な衝撃が加わった場合で
も、ある程度大きな質量をもっている接点部材がセンサ
素子に曲げモーメントを与えるような振動が抑制され
る。その結果、従来構造に比べて機械的強度が格段に向
上した、素子折れの発生しない酸素センサを得ることが
できる。As is apparent from the above description, according to the oxygen sensor of the present invention, one end of the caulking ring is extended so as to overlap with one end of the metal storage member, and at this overlapped portion. Since one end of the caulking ring and one end of the metal storage member are fixed, the mechanical strength of the overlapped portion is improved, and even when an excessive shock is applied to the oxygen sensor from the outside, Vibration in which a contact member having a large mass gives a bending moment to the sensor element is suppressed. As a result, it is possible to obtain an oxygen sensor in which the mechanical strength is remarkably improved as compared with the conventional structure and element breakage does not occur.
【図１】(a) は本考案の第１実施例の酸素センサの断面
図であり、(b) は同例の酸素センサの外筒、ブーツを組
み込む前段階の状態を示す全体図である。FIG. 1A is a sectional view of an oxygen sensor according to a first embodiment of the present invention, and FIG. 1B is an overall view showing a state before the outer cylinder and boot of the oxygen sensor of the same example are incorporated. .
【図２】第１実施例の酸素センサの接点部材の分解斜視
図である。FIG. 2 is an exploded perspective view of a contact member of the oxygen sensor of the first embodiment.
【図３】(a) は本考案および従来例のインパクト試験の
結果を比較して示す図であり、(b) はインパクト試験の
実施方法を示す図である。FIG. 3A is a diagram showing a comparison of the results of the impact test of the present invention and the conventional example, and FIG. 3B is a diagram showing a method of performing the impact test.
【図４】(a) は本考案の第２実施例の酸素センサの断面
図であり、(b) は同例の酸素センサの外筒、ブーツを組
み込む前段階の状態を示す全体図であり、(c) は同例の
酸素センサに用いる円筒形波バネの斜視図である。FIG. 4A is a sectional view of an oxygen sensor of a second embodiment of the present invention, and FIG. 4B is an overall view showing a state before the outer cylinder and boot of the oxygen sensor of the same example are incorporated. , (C) are perspective views of a cylindrical wave spring used in the oxygen sensor of the same example.
【図５】(a) は本考案の第３実施例の酸素センサの断面
図であり、(b) は同例の酸素センサの外筒、ブーツを組
み込む前段階の状態を示す全体図である。FIG. 5A is a sectional view of an oxygen sensor of a third embodiment of the present invention, and FIG. 5B is an overall view showing a state before the outer cylinder and boot of the oxygen sensor of the same example are incorporated. .
【図６】(a) は従来例の酸素センサの断面図、(b) は同
例の酸素センサの外筒、ブーツを組み込む前段階の状態
を示す全体図である。FIG. 6A is a sectional view of a conventional oxygen sensor, and FIG. 6B is an overall view showing a state before the outer cylinder and boot of the oxygen sensor of the same example are incorporated.
【図７】従来例の酸素センサの接点部材の分解斜視図で
ある。FIG. 7 is an exploded perspective view of a contact member of a conventional oxygen sensor.
２０ 酸素センサ ２２ センサ素子 ２６ 内筒（金属製収納部材） ３６ リード線 ４１ 雌コンタクト ４２ セラミックハウジング ４４ 押圧バネ ４６ 電極端子部 ４８ 接点部材 ５０ カシメリング ５２ カシメリング ５３ 円筒形波バネ 20 oxygen sensor 22 sensor element 26 inner cylinder (metal housing member) 36 lead wire 41 female contact 42 ceramic housing 44 pressing spring 46 electrode terminal portion 48 contact member 50 caulking ring 52 caulking ring 53 cylindrical wave spring
Claims (1)
起電力を生じる酸素検知部または被測定ガスの酸素濃度
に応じて電気抵抗が変化する酸素検知部を一端に形成さ
れるセンサ素子と、該センサ素子の他端に設けられ前記
電極に接続される電極端子部と、前記センサ素子を収納
する金属製収納部材と、前記電極端子部に電気的に導通
する雌コンタクトと、該雌コンタクトを前記金属製収納
部材より電気絶縁するとともに該雌コンタクトを収納す
るセラミックハウジングと、該セラミックハウジングを
押圧するためのバネ部材と、該バネ部材に押圧力を発生
させるカシメリングとよりなる酸素センサにおいて、 前記カシメリングの一端を前記金属製収納部材の一端に
オーバーラップさせるように延長し、このオーバーラッ
プさせた部位で前記カシメリングの一端と前記金属製収
納部材の一端とを固定するようにしたことを特徴とする
酸素センサ。1. A sensor element having at one end an oxygen detection part which produces an electromotive force between electrodes depending on the oxygen concentration of a gas to be measured or an oxygen detection part whose electric resistance changes according to the oxygen concentration of a gas to be measured. An electrode terminal portion provided at the other end of the sensor element and connected to the electrode; a metal housing member for housing the sensor element; a female contact electrically connected to the electrode terminal portion; An oxygen sensor including a ceramic housing for electrically insulating the contact from the metal housing member and housing the female contact, a spring member for pressing the ceramic housing, and a caulking ring for generating a pressing force on the spring member. In, the one end of the crimping ring is extended so as to overlap with one end of the metal storage member, and at the overlapped portion, Oxygen sensor is characterized in that so as to fix one end of Simmering and one end of the metal housing member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991020969U JPH081493Y2 (en) | 1991-03-11 | 1991-03-11 | Oxygen sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991020969U JPH081493Y2 (en) | 1991-03-11 | 1991-03-11 | Oxygen sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04110972U JPH04110972U (en) | 1992-09-25 |
| JPH081493Y2 true JPH081493Y2 (en) | 1996-01-17 |
Family
ID=31906916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1991020969U Expired - Lifetime JPH081493Y2 (en) | 1991-03-11 | 1991-03-11 | Oxygen sensor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH081493Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1139097A2 (en) | 2000-03-30 | 2001-10-04 | Denso Corporation | Gas sensor and structure of electric connector |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2490016B1 (en) * | 2009-10-13 | 2017-04-26 | NGK Insulators, Ltd. | Contact member for a gas sensor, gas sensor and method for manufacturing a gas sensor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02190757A (en) * | 1989-01-20 | 1990-07-26 | Japan Electron Control Syst Co Ltd | Oxygen sensor |
-
1991
- 1991-03-11 JP JP1991020969U patent/JPH081493Y2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1139097A2 (en) | 2000-03-30 | 2001-10-04 | Denso Corporation | Gas sensor and structure of electric connector |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04110972U (en) | 1992-09-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |