CN102095767A - Electrode connecting device for oxygen sensor - Google Patents
Electrode connecting device for oxygen sensor Download PDFInfo
- Publication number
- CN102095767A CN102095767A CN2009102011156A CN200910201115A CN102095767A CN 102095767 A CN102095767 A CN 102095767A CN 2009102011156 A CN2009102011156 A CN 2009102011156A CN 200910201115 A CN200910201115 A CN 200910201115A CN 102095767 A CN102095767 A CN 102095767A
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- electrode
- splicing ear
- guard member
- oxygen sensor
- rear end
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- Measuring Oxygen Concentration In Cells (AREA)
Abstract
The invention relates to an electrode connecting device for an oxygen sensor. The device comprises an electrode A connector, an electrode B connector, an oxygen sensor sensitive element, a ceramic protection piece and wires, wherein the ceramic protection piece is provided with an installation groove and wire through holes; the installation groove is provided with a first limit boss and a second limit boss; the electrode A connector and the electrode B connector are provided with a contact pin, an anti-vibration part and a wire connecting part respectively; the contact pins of the electrode A connector and the electrode B connector are in contact connection with electrodes of the oxygen sensor sensitive element; the tail end of each contact pin is jacked above the second limit boss of the installation groove of the ceramic protection piece; each anti-vibration part is jacked below the first limit boss of the installation groove of the ceramic protection piece; and the wire connecting parts of the electrode A connector and the electrode B connector and the wires are in compression joint and pass through the wire through holes of the ceramic protection piece. Compared with the prior art, the electrode connecting device has the advantages of high anti-vibration capability and the like.
Description
Technical field
The present invention relates to the vehicle exhaust pick-up unit, especially relate to a kind of electrode of oxygen sensor coupling arrangement.
Background technology
Lambda sensor is installed on the gas outlet, is to utilize the oxygen concentration in the ceramic sensitive element measurement gas outlet under the high temperature, reaches monitoring and control engine combustion air-fuel ratio, guarantees exhaust emissions measuring sensor up to standard.
At present, the electrode of oxygen sensor ceramic sensitive element and electrode splicing ear connected mode mainly contain modes such as clamping, welding.At first be assemblied in respectively on ceramic guard member c and the d as electrode splicing ear a and b among Fig. 1, be connected together with two C type buckle e and f successively again, after clamping is good lambda sensor sensitive element g is assembled into, the electrode splicing ear is contacted with the electrode of lambda sensor sensitive element realize being electrically connected, the lambda sensor sensitive element is connected very tight in this connected mode with the electrode splicing ear, but there is not the shockproof cushioning protection, be easy to cause the fracture of lambda sensor sensitive element, C type buckle pretightning force is very big, need the special tooling anchor clamps during clamping, complicated operation and easy unbalance stress destroy the lambda sensor sensitive element; Another kind of electrode splicing ear as shown in Figure 2, electrode splicing ear h and i at first insert among the ceramic guard member j, its contact feet contacts, contact feet is squeezed and opens and contact on the electrode of lambda sensor sensitive element when assembling with lambda sensor sensitive element k, and the assembling of lambda sensor sensitive element is required great effort in this connected mode, electrode splicing ear axial location is unstable and be given a shock influence easily; The electrode of oxygen sensor connected mode also has welding, but the welding technology complexity, the material cost height.
Summary of the invention
The objective of the invention is provides a kind of shake-proof ability strong electrode of oxygen sensor coupling arrangement for the defective that overcomes above-mentioned prior art existence.
Purpose of the present invention can be achieved through the following technical solutions:
A kind of electrode of oxygen sensor coupling arrangement; it is characterized in that; this device comprises A electrode splicing ear; B electrode splicing ear; the lambda sensor sensitive element; the pottery guard member; lead; the rear end housing; conductor interface; described ceramic guard member is provided with mounting groove; wire through-hole; described mounting groove is provided with first positive stop lug boss; second positive stop lug boss; described A electrode splicing ear; B electrode splicing ear is equipped with contact feet; shockproof portion; wire interconnecting piece; housing middle part, described rear end is provided with scrobicular ring; described lambda sensor sensitive element rear end is provided with electrode; described conductor interface is provided with the lead via hole; the excircle chamfering; described A electrode splicing ear; the contact feet of B electrode splicing ear is connected with the contact of the electrode of lambda sensor sensitive element; described contact feet end withstands on second positive stop lug boss of ceramic guard member mounting groove; described shockproof portion withstands under first positive stop lug boss of ceramic guard member mounting groove; described A electrode splicing ear; the wire interconnecting piece and the conductor compression jointing of B electrode splicing ear pass from the wire through-hole of ceramic guard member together; described lead passes the lead via hole of conductor interface again, and described conductor interface and ceramic guard member are located in the housing of rear end.
Described A electrode splicing ear, the contact feet of B electrode splicing ear, shockproof portion constitute a kind of shape of falling S structure together.
Described A electrode splicing ear, B electrode splicing ear are packed into behind the mounting groove of ceramic guard member, and the angle between the electrode place face of described shockproof and described lambda sensor sensitive element is 0 to 10 degree.
The excircle chamfering of described conductor interface withstands on the housing sidewall of rear end.
This device also comprises limiting gasket, and described limiting gasket is stuck between the scrobicular ring and ceramic guard member of rear end housing.
Described limiting gasket is an elastic steel sheet, and is provided with surface of contact and card base.
The card base quantity of described limiting gasket is 3～4.
The surface of contact of described limiting gasket withstands on the ceramic guard member.
Described card base along the circumferential direction evenly distributes, and withstands under the scrobicular ring of rear end housing.
Compared with prior art, the present invention has the following advantages:
1, the electrode splicing ear is the shape of falling S structure, and its shockproof can absorbing vibration, reduces the deflection of contact feet, reduces the influence of vibrations to the lambda sensor sensitive element;
2, the electrode splicing ear mounting groove of ceramic guard member can make the electrode splicing ear accurately locate, and has guaranteed to contact accurately with lambda sensor sensitive element electrode; The positive stop lug boss of pottery guard member mounting groove can limit the electrode splicing ear and move axially, and makes electrode splicing ear axial location fix difficult drop-off;
3, limiting gasket limits ceramic guard member and axially moves in the housing of rear end, and the electrode contact position of electrode splicing ear contact feet and lambda sensor sensitive element is fixed.
Description of drawings
Fig. 1 is the structural representation of the first traditional electrode connected mode;
Fig. 2 is the structural representation of the second traditional electrode connected mode;
Fig. 3 is the structural representation of a kind of electrode of oxygen sensor coupling arrangement of the present invention;
The vertical view that Fig. 4 installs in ceramic guard member for the electrode splicing ear of a kind of electrode of oxygen sensor coupling arrangement of the present invention;
The cut-open view that Fig. 5 installs in ceramic guard member for the electrode splicing ear of a kind of electrode of oxygen sensor coupling arrangement of the present invention;
Fig. 6 is the vertical view of a kind of electrode of oxygen sensor coupling arrangement of the present invention limiting gasket;
Fig. 7 is a kind of electrode of oxygen sensor coupling arrangement of the present invention limiting gasket cut-open view.
Embodiment
The present invention is described in detail below in conjunction with the drawings and specific embodiments.
Embodiment
As shown in Figure 3, lambda sensor is made up of forward and backward two parts.
Front end internal layer containment vessel 18 and front end outer layer protection shell 19 are installed in installs housing 1 front end; install on the housing 1 and be with S packing ring 16, lambda sensor sensitive element 5 is clamped to by saucer washer 17, front end ceramic member 2, sealing powder 3, rear end ceramic member 4, seal casinghousing 6 first half that forms lambda sensor in the housing 1 is installed.Lambda sensor sensitive element 5 rear ends are provided with electrode 51,52.
The latter half of lambda sensor comprises A electrode splicing ear 7, B electrode splicing ear 8, ceramic guard member 9, rear end housing 14, limiting gasket 15, lead 10, wire socket 11, conductor interface 12 and crimping sleeve 13.Housing middle part, rear end has scrobicular ring 141.Conductor interface has lead via hole 121, excircle chamfering 122, and limiting gasket has card base 151 and surface of contact 152.A electrode splicing ear 7, B electrode splicing ear 8 are two or three.
A electrode splicing ear 7 and B electrode splicing ear 8 are crimped on together and insert with lead 10 respectively in the corresponding mounting groove of ceramic guard member 9; lead passes from the wire through-hole of ceramic guard member 9; lead passes the lead via hole 121 of conductor interface 12 again; again conductor interface 12 and ceramic guard member 9 are inserted rear end housing 14 rear ends; the excircle chamfering 122 of conductor interface 12 withstands on the housing sidewall of rear end; with limiting gasket 15 from rear end housing 14 front openings dispose into; be stuck between the scrobicular ring 141 and ceramic guard member 9 at rear end housing 14 middle parts; the surface of contact 152 of limiting gasket 15 withstands on the ceramic guard member; card base 151 withstands on the scrobicular ring 141 times of rear end housing, and the axial location of ceramic guard member 9 in rear end housing 14 fixed.
A electrode splicing ear 7 and B electrode splicing ear 8 are aimed at the electrode 51 and 52 of lambda sensor sensitive element 5 rear ends, the lambda sensor rear end is promoted to the lambda sensor front end, rear end housing 14 is enclosed within housing 1 rear end is installed, the stressed back distortion of electrode splicing ear is stuck on the electrode 51,52 of lambda sensor sensitive element 5 rear ends.
Shown in the vertical view of installing in the ceramic guard member, among this embodiment, A electrode splicing ear 7, B electrode splicing ear 8 respectively are two as Fig. 4 electrode splicing ear.Two A electrode splicing ears 7 and two B electrode splicing ears 8 are inserted in the mounting groove 91 of ceramic guard member 9 correspondences, and described mounting groove 91 can make the electrode splicing ear accurately locate, and the wire interconnecting piece of electrode splicing ear passes from wire through-hole 94.
Shown in the cut-open view of installing in the ceramic guard member, A electrode splicing ear 7 has shockproof 71 as Fig. 5 electrode splicing ear, contact feet 72 and wire interconnecting piece 73, and B electrode splicing ear 8 has shockproof 81, contact feet 82 and wire interconnecting piece 83; Pottery guard member 9 has mounting groove 91, mounting groove first positive stop lug boss 92, mounting groove second positive stop lug boss 93, wire through-hole 94.With B electrode splicing ear 8 is example; wire interconnecting piece 83 and lead 10 are crimped on together and pass from ceramic guard member 9 corresponding wire through-holes 94; shockproof 81 and contact feet 82 are inserted in the mounting groove 91; withstand on mounting groove first positive stop lug boss for shockproof 81 92 times; contact feet 82 ends withstand on mounting groove second positive stop lug boss 93; the axial displacement of B electrode splicing ear is limited, and A electrode splicing ear 7 is installed in the ceramic guard member 9 with the same manner.The contact feet 82 of the contact feet 72 of two A electrode splicing ears 7 and two B electrode splicing ears 8 contacts with the electrode 51,52 of lambda sensor sensitive element rear end respectively, when vibrations take place, shockproof elastic deformation takes place, absorb part vibrations, form buffering, reduce the deflection of contact feet, reduce the influence of vibrations lambda sensor sensitive element 5.A electrode splicing ear 7, B electrode splicing ear 8 are packed into behind the mounting groove 91 of ceramic guard member 9, and the angle α between electrode 51, the 52 place faces of shockproof of the electrode splicing ear and lambda sensor sensitive element 5 is 0 to 10 degree.The optimum orientation of shockproof angle α that is become with the electrode place face of lambda sensor sensitive element is the preceding extreme direction that the intersection point of extended line of the shockproof portion of the extended line of shockproof portion of A electrode splicing ear and B electrode splicing ear drops on the lambda sensor sensitive element.
Shown in the vertical view of Fig. 6 limiting gasket, the card base 151 among this embodiment has 4, and card base along the circumferential direction evenly distributes.
The relative position of card base 151 and surface of contact 152 has been described in the cut-open view of limiting gasket as shown in Figure 7.
Claims (9)
1. electrode of oxygen sensor coupling arrangement; it is characterized in that; this device comprises A electrode splicing ear; B electrode splicing ear; the lambda sensor sensitive element; the pottery guard member; lead; the rear end housing; conductor interface; described ceramic guard member is provided with mounting groove; wire through-hole; described mounting groove is provided with first positive stop lug boss; second positive stop lug boss; described A electrode splicing ear; B electrode splicing ear is equipped with contact feet; shockproof portion; wire interconnecting piece; housing middle part, described rear end is provided with scrobicular ring; described lambda sensor sensitive element rear end is provided with electrode; described conductor interface is provided with the lead via hole; the excircle chamfering; described A electrode splicing ear; the contact feet of B electrode splicing ear is connected with the contact of the electrode of lambda sensor sensitive element; described contact feet end withstands on second positive stop lug boss of ceramic guard member mounting groove; described shockproof portion withstands under first positive stop lug boss of ceramic guard member mounting groove; described A electrode splicing ear; the wire interconnecting piece and the conductor compression jointing of B electrode splicing ear pass from the wire through-hole of ceramic guard member together; described lead passes the lead via hole of conductor interface again, and described conductor interface and ceramic guard member are located in the housing of rear end.
2. a kind of electrode of oxygen sensor coupling arrangement according to claim 1 is characterized in that, described A electrode splicing ear, the contact feet of B electrode splicing ear, shockproof portion constitute a kind of shape of falling S structure together.
3. a kind of electrode of oxygen sensor coupling arrangement according to claim 1; it is characterized in that; described A electrode splicing ear, B electrode splicing ear are packed into behind the mounting groove of ceramic guard member, and the angle between the electrode place face of described shockproof and described lambda sensor sensitive element is 0 to 10 degree.
4. a kind of electrode of oxygen sensor coupling arrangement according to claim 1 is characterized in that the excircle chamfering of described conductor interface withstands on the housing sidewall of rear end.
5. a kind of electrode of oxygen sensor coupling arrangement according to claim 1 is characterized in that this device also comprises limiting gasket, and described limiting gasket is stuck between the scrobicular ring and ceramic guard member of rear end housing.
6. a kind of electrode of oxygen sensor coupling arrangement according to claim 5 is characterized in that described limiting gasket is an elastic steel sheet, and is provided with surface of contact and card base.
7. a kind of electrode of oxygen sensor coupling arrangement according to claim 6 is characterized in that the card base quantity of described limiting gasket is 3～4.
8. a kind of electrode of oxygen sensor coupling arrangement according to claim 6 is characterized in that the surface of contact of described limiting gasket withstands on the ceramic guard member.
9. a kind of electrode of oxygen sensor coupling arrangement according to claim 6 is characterized in that, described card base along the circumferential direction evenly distributes, and withstands under the scrobicular ring of rear end housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910201115.6A CN102095767B (en) | 2009-12-15 | 2009-12-15 | Electrode connecting device for oxygen sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910201115.6A CN102095767B (en) | 2009-12-15 | 2009-12-15 | Electrode connecting device for oxygen sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102095767A true CN102095767A (en) | 2011-06-15 |
| CN102095767B CN102095767B (en) | 2014-05-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910201115.6A Expired - Fee Related CN102095767B (en) | 2009-12-15 | 2009-12-15 | Electrode connecting device for oxygen sensor |
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| Country | Link |
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| CN (1) | CN102095767B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102692247A (en) * | 2012-06-17 | 2012-09-26 | 无锡隆盛科技股份有限公司 | Electrode fixing device of plate oxygen sensor |
| CN103913485A (en) * | 2014-04-17 | 2014-07-09 | 常州联德电子有限公司 | Modular assembly of automotive oxygen sensor and encapsulation method of assembly |
| CN105424886A (en) * | 2015-12-09 | 2016-03-23 | 苏州工业园区传世汽车电子有限公司 | Oxygen sensor for internal combustion engine |
| CN106596848A (en) * | 2016-11-15 | 2017-04-26 | 莱鼎电子材料科技有限公司 | Novel oxygen sensor and encapsulating method thereof |
| CN110333279A (en) * | 2019-07-10 | 2019-10-15 | 莱鼎电子材料科技有限公司 | A kind of broad domain oxygen sensor structure |
| CN111665290A (en) * | 2020-06-05 | 2020-09-15 | 株洲聚创电气科技有限公司 | Electrode connection structure of ceramic oxygen sensor |
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| EP0978720A2 (en) * | 1998-08-03 | 2000-02-09 | Denso Corporation | Gas sensor with ceramic heater |
| JP2007003216A (en) * | 2005-06-21 | 2007-01-11 | Ngk Spark Plug Co Ltd | Sensor |
| CN2932386Y (en) * | 2004-03-19 | 2007-08-08 | 日本特殊陶业株式会社 | Gas-sensitive sensor |
| US20070246361A1 (en) * | 2006-04-20 | 2007-10-25 | Denso Corporation | Gas sensor with increased sealing performance |
| CN101173908A (en) * | 2006-10-30 | 2008-05-07 | 株式会社电装 | Gas sensor with increased reliability and related manufacturing method |
| WO2008108364A1 (en) * | 2007-03-06 | 2008-09-12 | Hitachi, Ltd. | Gas sensor |
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2009
- 2009-12-15 CN CN200910201115.6A patent/CN102095767B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0978720A2 (en) * | 1998-08-03 | 2000-02-09 | Denso Corporation | Gas sensor with ceramic heater |
| CN2932386Y (en) * | 2004-03-19 | 2007-08-08 | 日本特殊陶业株式会社 | Gas-sensitive sensor |
| JP2007003216A (en) * | 2005-06-21 | 2007-01-11 | Ngk Spark Plug Co Ltd | Sensor |
| US20070246361A1 (en) * | 2006-04-20 | 2007-10-25 | Denso Corporation | Gas sensor with increased sealing performance |
| CN101173908A (en) * | 2006-10-30 | 2008-05-07 | 株式会社电装 | Gas sensor with increased reliability and related manufacturing method |
| WO2008108364A1 (en) * | 2007-03-06 | 2008-09-12 | Hitachi, Ltd. | Gas sensor |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102692247A (en) * | 2012-06-17 | 2012-09-26 | 无锡隆盛科技股份有限公司 | Electrode fixing device of plate oxygen sensor |
| CN103913485A (en) * | 2014-04-17 | 2014-07-09 | 常州联德电子有限公司 | Modular assembly of automotive oxygen sensor and encapsulation method of assembly |
| CN103913485B (en) * | 2014-04-17 | 2017-03-08 | 常州联德电子有限公司 | A kind of oxygen sensor used in vehicle modularity assembly and method for packing |
| CN105424886A (en) * | 2015-12-09 | 2016-03-23 | 苏州工业园区传世汽车电子有限公司 | Oxygen sensor for internal combustion engine |
| CN105424886B (en) * | 2015-12-09 | 2017-10-13 | 苏州工业园区传世汽车电子有限公司 | Oxygen sensor for internal combustion engine |
| CN106596848A (en) * | 2016-11-15 | 2017-04-26 | 莱鼎电子材料科技有限公司 | Novel oxygen sensor and encapsulating method thereof |
| CN110333279A (en) * | 2019-07-10 | 2019-10-15 | 莱鼎电子材料科技有限公司 | A kind of broad domain oxygen sensor structure |
| CN111665290A (en) * | 2020-06-05 | 2020-09-15 | 株洲聚创电气科技有限公司 | Electrode connection structure of ceramic oxygen sensor |
| CN111665290B (en) * | 2020-06-05 | 2022-09-09 | 湖南圳铭智能技术有限公司 | Electrode connection structure of ceramic oxygen sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102095767B (en) | 2014-05-28 |
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Granted publication date: 20140528 Termination date: 20191215 |
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