CN102095767B - Electrode connecting device for oxygen sensor - Google Patents
Electrode connecting device for oxygen sensor Download PDFInfo
- Publication number
- CN102095767B CN102095767B CN200910201115.6A CN200910201115A CN102095767B CN 102095767 B CN102095767 B CN 102095767B CN 200910201115 A CN200910201115 A CN 200910201115A CN 102095767 B CN102095767 B CN 102095767B
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- electrode
- splicing ear
- guard member
- oxygen sensor
- connecting device
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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 automobile exhaust gas checking apparatus, especially relate to a kind of electrode connecting device for oxygen sensor.
Background technology
Lambda sensor is arranged on gas outlet, is to utilize Ceramic sensible devices under high temperature to measure the oxygen concentration in gas outlet, reaches monitoring and control engine 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 the mode such as clamping, welding.As first electrode splicing ear a and b in Fig. 1 are assemblied in respectively on ceramic guard member c and d, 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, make the electrode contact of electrode splicing ear and lambda sensor sensitive element realize electrical connection, in this connected mode, lambda sensor sensitive element is connected very tight with electrode splicing ear, but there is no shockproof cushioning protection, be easy to cause the fracture of lambda sensor sensitive element, C type buckle pretightning force is very large, when clamping, need Special tooling clamp, complicated operation and easily unbalance stress destroy lambda sensor sensitive element, another kind of electrode splicing ear as shown in Figure 2, first electrode splicing ear h and i insert in ceramic guard member j, its contact feet contacts, while assembling with lambda sensor sensitive element k, contact feet is squeezed and is contacted on the electrode of lambda sensor sensitive element, and in this connected mode, the assembling of lambda sensor sensitive element is required great effort, electrode splicing ear axial location is unstable and be easily given a shock impact, electrode of oxygen sensor connected mode also has welding, but welding technology complexity, material cost is high.
Summary of the invention
The object of the invention is the defect in order to overcome above-mentioned prior art existence and the electrode connecting device for oxygen sensor that a kind of shake-proof ability is strong is provided.
Object of the present invention can be achieved through the following technical solutions:
A kind of electrode connecting device for oxygen sensor, is characterized in that, this device comprises A electrode splicing ear, B electrode splicing ear, lambda sensor sensitive element, pottery guard member, wire, rear end housing, conductor interface, described ceramic guard member is provided with mounting groove, wire through-hole, described mounting groove is provided with the first positive stop lug boss, the second positive stop lug boss, described A electrode splicing ear, B electrode splicing ear is equipped with contact feet, shockproof portion, wire interconnecting piece, described housing middle part, rear end is provided with scrobicular ring, and described lambda sensor sensitive element rear end is provided with electrode, and described conductor interface is provided with wire via hole, excircle chamfering, described A electrode splicing ear, the contact feet of B electrode splicing ear is connected with the electrode contact of lambda sensor sensitive element, described contact feet end withstands on the second positive stop lug boss of ceramic guard member mounting groove, described shockproof portion withstands under the first positive stop lug boss of ceramic guard member mounting groove, described A electrode splicing ear, the wire interconnecting piece of B electrode splicing ear wire through-hole from ceramic guard member together with conductor compression jointing passes, and described wire is again through the wire via hole of conductor interface, 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 form a kind of inverted S-shaped structure together.
Described A electrode splicing ear, B electrode splicing ear pack into after the mounting groove of ceramic guard member, and the angle between described shockproof portion and the electrode place face of described lambda sensor sensitive element is 0 to 10 degree.
The excircle chamfering of described conductor interface withstands in 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 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 in ceramic guard member.
Described card base is along the circumferential direction uniformly distributed, and withstands under the scrobicular ring of rear end housing.
Compared with prior art, the present invention has the following advantages:
1, electrode splicing ear is inverted S-shaped structure, and its shockproof portion can absorbing vibration, reduces the deflection of contact feet, reduces the impact of vibrations on lambda sensor sensitive element;
2, the electrode splicing ear mounting groove of ceramic guard member can make electrode splicing ear accurately locate, and it is accurate to have guaranteed with lambda sensor sensitive element electrode contact; The positive stop lug boss of pottery guard member mounting groove can limit electrode splicing ear and move axially, and electrode splicing ear axial location is fixed, difficult drop-off;
3, limiting gasket limits ceramic guard member and moves axially in the housing of rear end, and the electrode contact position of electrode splicing ear contact feet and lambda sensor sensitive element is fixed.
Accompanying drawing explanation
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 connecting device for oxygen sensor of the present invention;
Fig. 4 is the vertical view that the electrode splicing ear of a kind of electrode connecting device for oxygen sensor of the present invention is installed in ceramic guard member;
Fig. 5 is the cut-open view that the electrode splicing ear of a kind of electrode connecting device for oxygen sensor of the present invention is installed in ceramic guard member;
Fig. 6 is the vertical view of a kind of electrode connecting device for oxygen sensor limiting gasket of the present invention;
Fig. 7 is a kind of electrode connecting device for oxygen sensor limiting gasket of the present invention cut-open view.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
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 arranged on holder housing 1 front end; on holder housing 1, cover has S packing ring 16, and lambda sensor sensitive element 5 is clamped to the interior first half that forms lambda sensor of holder housing 1 by saucer washer 17, front end ceramic member 2, sealing powder 3, rear end ceramic member 4, seal casinghousing 6.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, wire 10, wire socket 11, conductor interface 12 and crimping sleeve 13.Housing middle part, rear end has scrobicular ring 141.Conductor interface has wire 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.
Together with A electrode splicing ear 7 is crimped on wire 10 respectively with B electrode splicing ear 8 and insert in mounting groove corresponding to ceramic guard member 9, wire passes from the wire through-hole of ceramic guard member 9, wire passes the wire via hole 121 of conductor interface 12 again, again conductor interface 12 and ceramic guard member 9 are inserted to rear end housing 14 rear ends, the excircle chamfering 122 of conductor interface 12 withstands in the housing sidewall of rear end, by 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 in ceramic guard member, card base 151 withstands on the scrobicular ring 141 times of rear end housing, 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, lambda sensor rear end is promoted to lambda sensor front end, make rear end housing 14 be enclosed within holder housing 1 rear end, the stressed rear distortion of electrode splicing ear, is stuck on the electrode 51,52 of lambda sensor sensitive element 5 rear ends.
As shown in the vertical view that Fig. 4 electrode splicing ear is installed in ceramic guard member, in this embodiment, A electrode splicing ear 7, B electrode splicing ear 8 are respectively two.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 electrode splicing ear accurately locate, and the wire interconnecting piece of electrode splicing ear passes from wire through-hole 94.
As shown in the cut-open view that Fig. 5 electrode splicing ear is installed in ceramic guard member, A electrode splicing ear 7 has shockproof portion 71, contact feet 72 and wire interconnecting piece 73, and B electrode splicing ear 8 has shockproof portion 81, contact feet 82 and wire interconnecting piece 83; Pottery guard member 9 has mounting groove 91, mounting groove the first positive stop lug boss 92, mounting groove the second positive stop lug boss 93, wire through-hole 94.Take B electrode splicing ear 8 as example; wire interconnecting piece 83 is crimped on together and passes from wire through-hole 94 corresponding to ceramic guard member 9 with wire 10; shockproof portion 81 and contact feet 82 are inserted in mounting groove 91; shockproof portion 81 withstands on mounting groove the first positive stop lug boss 92 times; contact feet 82 ends withstand on mounting groove the second positive stop lug boss 93; the axial displacement of B electrode splicing ear is limited, and A electrode splicing ear 7 is arranged in 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, while there are vibrations, there is elastic deformation in shockproof portion, absorb part vibrations, form buffering, reduce the deflection of contact feet, reduce the impact of vibrations on lambda sensor sensitive element 5.A electrode splicing ear 7, B electrode splicing ear 8 pack into after the mounting groove 91 of ceramic guard member 9, and the angle α between the shockproof portion of electrode splicing ear and the electrode of lambda sensor sensitive element 5 51,52 place faces is 0 to 10 degree.The optimum orientation of the angle α that shockproof portion becomes with the electrode place face of lambda sensor sensitive element is the front extreme direction that the intersection point of the extended line of shockproof portion of A electrode splicing ear and the extended line of the shockproof portion of B electrode splicing ear drops on lambda sensor sensitive element.
As shown in the vertical view of Fig. 6 limiting gasket, the card base 151 in this embodiment has 4, and card base is along the circumferential direction uniformly distributed.
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. an electrode connecting device for oxygen sensor, is characterized in that, this device comprises A electrode splicing ear, B electrode splicing ear, lambda sensor sensitive element, pottery guard member, wire, rear end housing, conductor interface, described ceramic guard member is provided with mounting groove, wire through-hole, described mounting groove is provided with the first positive stop lug boss, the second positive stop lug boss, described A electrode splicing ear, B electrode splicing ear is equipped with contact feet, shockproof portion, wire interconnecting piece, described housing middle part, rear end is provided with scrobicular ring, and described lambda sensor sensitive element rear end is provided with electrode, and described conductor interface is provided with wire via hole, excircle chamfering, described A electrode splicing ear, the contact feet of B electrode splicing ear is connected with the electrode contact of lambda sensor sensitive element, described contact feet end withstands on the second positive stop lug boss of ceramic guard member mounting groove, described shockproof portion withstands under the first positive stop lug boss of ceramic guard member mounting groove, described A electrode splicing ear, the wire interconnecting piece of B electrode splicing ear wire through-hole from ceramic guard member together with conductor compression jointing passes, and described wire is again through the wire via hole of conductor interface, and described conductor interface and ceramic guard member are located in the housing of rear end.
2. a kind of electrode connecting device for oxygen sensor according to claim 1, is characterized in that, the contact feet of each electrode splicing ear, shockproof portion form a kind of inverted S-shaped structure together.
3. a kind of electrode connecting device for oxygen sensor according to claim 1; it is characterized in that; described A electrode splicing ear, B electrode splicing ear pack into after the mounting groove of ceramic guard member, and the angle between described shockproof portion and the electrode place face of described lambda sensor sensitive element is 0 to 10 degree.
4. a kind of electrode connecting device for oxygen sensor according to claim 1, is characterized in that, the excircle chamfering of described conductor interface withstands in the housing sidewall of rear end.
5. a kind of electrode connecting device for oxygen sensor 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 connecting device for oxygen sensor according to claim 5, is characterized in that, described limiting gasket is elastic steel sheet, and is provided with surface of contact and card base.
7. a kind of electrode connecting device for oxygen sensor according to claim 6, is characterized in that, the card base quantity of described limiting gasket is 3～4.
8. a kind of electrode connecting device for oxygen sensor according to claim 6, is characterized in that, the surface of contact of described limiting gasket withstands in ceramic guard member.
9. a kind of electrode connecting device for oxygen sensor according to claim 6, is characterized in that, described card base is along the circumferential direction uniformly distributed, 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 CN102095767A (en) | 2011-06-15 |
| CN102095767B true CN102095767B (en) | 2014-05-28 |
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| 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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Families Citing this family (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 |
| 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 |
| 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 |
| 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 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007292463A (en) * | 2006-04-20 | 2007-11-08 | Denso Corp | Method for manufacturing gas sensor |
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2009
- 2009-12-15 CN CN200910201115.6A patent/CN102095767B/en not_active Expired - Fee Related
Patent Citations (5)
| 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 |
| 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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| CN102095767A (en) | 2011-06-15 |
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Granted publication date: 20140528 Termination date: 20191215 |