CN102707019A - Electrode connecting device of gas sensor - Google Patents
Electrode connecting device of gas sensor Download PDFInfo
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- CN102707019A CN102707019A CN2012101985285A CN201210198528A CN102707019A CN 102707019 A CN102707019 A CN 102707019A CN 2012101985285 A CN2012101985285 A CN 2012101985285A CN 201210198528 A CN201210198528 A CN 201210198528A CN 102707019 A CN102707019 A CN 102707019A
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- gas sensor
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Abstract
The invention discloses an electrode connecting device of a gas sensor. The device comprises a sensor component and a wiring harness connecting component, wherein the sensor component comprises a hexagon support seat, and a chip arranged in the hexagon support seat, two ends of the chip extend out of the hexagon support seat, one end of the chip extends into the wiring harness connecting component, the wiring harness connecting component comprises an electrode terminal arranged on an outer ring of the chip, and a ceramic clamping piece arranged on the outer ring of the electrode terminal, a first arched bulge is arranged on the electrode terminal, near an end part of the chip, the chip is clamped by the first arched bulge, the electrode terminal is provided with a second arched bulge, and the chip is clamped by the second arched bulge; and the electrode terminal is made of high nickel alloy material. Each electrode terminal is provided with the two arched bulges, the contact between one arched bulge and the electrode of the chip can be kept, and the chip can be fixed by the other arched bulge. When the sensor is vibrated and shocked, elastic buffering protection can be provided to the chip by the elasticity of the arched bulges, the chip can resist the vibration and shock, and simultaneously the electrode is kept contacted without separation.
Description
Technical field
The present invention relates to the automobile engine tail gas pick-up unit, relate in particular to a kind of electrode connection device of gas sensor, belong to engine exhaust emission control system field.
Background technology
Gas sensor is installed on engine exhaust system, is used for the concentration of perception exhaust, realizes the engine closed-loop control.The core parts of gas sensor are the chips of ceramic material, and chip is worked in exhaust environment, and the signal output that produces through inside reflects exhaust concentration.
The chip electrode of gas sensor is connected normally directly contact with the electrode terminal of lead at present, to realize the conduction of signal.Because gas sensor is worked, therefore will guarantee the sensor electrode contact firmly, and chip is difficult for being damaged by thermal stress and vibrations in the environment of high temperature, vibrations.A kind of gas sensors electrode syndeton commonly used is as shown in Figure 1, and electrode terminal 1 is assemblied on the ceramic intermediate plate 2, clamps with Spring Card 3 and butterfly card 4 successively again.In the middle of chip 5 was contained in, its electrode position just in time contacted with the protruding 1a of electrode terminal 1, with the protruding 2a of two ceramic intermediate plates 2 chip 5 was fixed.It is very closely firm that this assembly structure not only requires ceramic chip 2 to contact with electrode terminal 1, and chip 5 does not have the elastic buffer protection like this, and when being given a shock impact, perhaps the high temperature variation makes when electrode stretches chip 5 easy fracture damage.
Summary of the invention
Technical matters to be solved by this invention provides a kind of ability and the elastic buffer protection is provided for the electrode junction of sensing chip; Make when sensing chip keeps connecting conducting, can also bear the electrode connection device that extraneous jerk and high temperature change the gas sensor that impacts.
For solving the problems of the technologies described above, the present invention adopts following scheme to realize:
A kind of electrode connection device of gas sensor comprises sensing unit's assembly and wire harness coupling assembling, and sensing unit assembly comprises the hexagonal bearing, is arranged on the chip in the hexagonal bearing; The hexagonal bearing is stretched out at the two ends of chip, is respectively installed with first ceramic jacket, seal, second ceramic jacket on the chip in the hexagonal bearing, and chip is provided with interior guard shield and outer shield near one section outer ring that first ceramic jacket stretches out the hexagonal bearing; Chip stretches into the wire harness coupling assembling near an end of second ceramic jacket; Second ceramic jacket is outside equipped with inner protective tube, and the wire harness coupling assembling comprises the electrode terminal that is arranged on the chip outer ring, the ceramic intermediate plate that the electrode terminal outer ring is provided with; The outer ring of pottery intermediate plate is provided with Spring Card; Spring Card is outside equipped with the butterfly card, and it is protruding to be provided with first arch near place, chip end on the electrode terminal, and the first arch convexity clamps chip; End medial surface near second ceramic jacket on the electrode terminal is provided with second arch convexity, the protruding chip that clamps of second arch.
The material of electrode terminal is the Langaloy material.
Be connected with lead on the electrode terminal.
Lead is outside equipped with wire bushing.
Butterfly card and inner protective tube are outside equipped with outer pillar.
Beneficial effect: electrode terminal of the present invention adopts the Langaloy material close with the chip electrode percent thermal shrinkage; The convexity that two arches are arranged on each electrode terminal; When ceramic intermediate plate clamps the electrode terminal on both sides; Arch convexity can keep and the contacting of chip electrode, and another arch convexity can be fixed chip.When sensor was given a shock impact, the protruding elasticity of arch can give chip an elastic buffer protection, make it can stand jerk, keeps the electrode contact not throw off simultaneously; Under the environment that high temperature changes, the electrode terminal that the Langaloy material is done can keep the synchronization telescope with chip electrode, eliminates stress the damage of chip have been increased the reliability of sensor chip electrode contact conducting; Can reduce the infringement of high temperature impact to sensor chip.
Description of drawings
Fig. 1 is the syndeton synoptic diagram of a kind of gas sensors electrode coupling arrangement of the prior art;
Fig. 2 is a gas sensor configuration synoptic diagram of the present invention;
Fig. 3 is a gas sensors electrode coupling arrangement part synoptic diagram of the present invention.
Among the figure: 1-electrode terminal, 2-ceramic intermediate plate, 3-Spring Card, 4-butterfly card, 5-chip, 6-outer pillar, 7-hexagonal bearing, 8-outer shield, 9-interior guard shield, 10-the first ceramic jacket, 11-seal, 12-the second ceramic jacket, 13-inner protective tube, 14-wire bushing, 15-lead, protruding, the 1c-second arch convexity of 1b-first arch.
Embodiment
Further specify technical scheme of the present invention below in conjunction with accompanying drawing.
A kind of electrode connection device of gas sensor; Comprise sensing unit's assembly and wire harness coupling assembling, sensing unit assembly comprises hexagonal bearing 7, is arranged on the chip 5 in the hexagonal bearing 7, and hexagonal bearing 7 is stretched out at the two ends of chip 5; Be respectively installed with first ceramic jacket 10, seal 11, second ceramic jacket 12 in the hexagonal bearing 7 on the chips 5; Chip 5 is provided with interior guard shield 9 and outer shield 8 near one section outer ring that first ceramic jacket 10 stretches out hexagonal bearing 7, and chip 5 stretches into the wire harness coupling assembling near an end of second ceramic jacket 12, and second ceramic jacket 12 is outside equipped with inner protective tube 13; The wire harness coupling assembling comprises the electrode terminal 1 that is arranged on chip 5 outer rings; The ceramic intermediate plate 2 that electrode terminal 1 outer ring is provided with, the outer ring of ceramic intermediate plate 2 is provided with Spring Card 3, and Spring Card 3 is outside equipped with butterfly card 4; Be provided with the protruding 1b of first arch near place, chip 5 ends on the electrode terminal 1; The protruding 1b of first arch clamps chip 5, and the end medial surface near second ceramic jacket 12 on the electrode terminal 1 is provided with the protruding 1c of second arch, and the protruding 1c of second arch clamps chip 5.
The material of electrode terminal 1 is the Langaloy material.
Be connected with lead 15 on the electrode terminal 1.
Fig. 3 is a gas sensors electrode coupling arrangement part synoptic diagram shown in Figure 2, and electrode terminal 1 is assemblied in earlier on the ceramic intermediate plate 2, successively clamps two ceramic intermediate plates 2 with Spring Card 3 and butterfly card 4 again.During assembling chip 5; Because the clamping force of Spring Card 3 and butterfly card 4; Need with instrument Spring Card 3 and butterfly card 4 to be opened earlier; Chip 5 is injected between two ceramic intermediate plates 2 again, lean on the protruding 1b of first arch of the electrode terminal 1 on the ceramic intermediate plate 2 and the protruding 1c of second arch that chip 5 is clamped, wherein the protruding 1b of first arch just in time contacts with the electrode of chip 5.Put outer pillar 6 at last, the butterfly shell fragment 4a on the butterfly card 4 is stuck on outer pillar 6 inwalls, guarantees that the Spring Card 3 that clamps ceramic intermediate plate 2 can not unclamp with butterfly card 4.
The present invention is through to the ingenious design of electrode splicing ear, and the selecting for use of suitable material, not only improved ability and conducting reliability that the chip anti-vibration is impacted, and improved the ability of chip thermal stress resistance impact.Improve the reliability that gas sensor is worked in the environment of engine high-temperature, vibrations.
Claims (5)
1. plant the electrode connection device of gas sensor; Comprise sensing unit's assembly and wire harness coupling assembling; Sensing unit assembly comprises hexagonal bearing (7), is arranged on the chip (5) in the hexagonal bearing (7); Hexagonal bearing (7) is stretched out at the two ends of chip (5), is respectively installed with first ceramic jacket (10), seal (11), second ceramic jacket (12) on the interior chip of hexagonal bearing (7) (5), and chip (5) is provided with interior guard shield (9) and outer shield (8) near one section outer ring that first ceramic jacket (10) stretches out hexagonal bearing (7); Chip (5) stretches into the wire harness coupling assembling near an end of second ceramic jacket (12); Second ceramic jacket (12) is outside equipped with inner protective tube (13), and the wire harness coupling assembling comprises the electrode terminal (1) that is arranged on chip (5) outer ring, the ceramic intermediate plate (2) that electrode terminal (1) outer ring is provided with; The outer ring of pottery intermediate plate (2) is provided with Spring Card (3); Spring Card (3) is outside equipped with butterfly card (4), it is characterized in that: said electrode terminal (1) is gone up near place, chip (5) end and is provided with first arch protruding (1b), and first arch protruding (1b) clamps chip (5); The end medial surface that electrode terminal (1) is gone up near second ceramic jacket (12) is provided with second arch protruding (1c), and second arch protruding (1c) clamps chip (5).
2. the electrode connection device of gas sensor according to claim 1, it is characterized in that: the material of said electrode terminal (1) is the Langaloy material.
3. the electrode connection device of gas sensor according to claim 1 is characterized in that: be connected with lead (15) on the said electrode terminal (1).
4. the electrode connection device of gas sensor according to claim 3, it is characterized in that: said lead (15) is outside equipped with wire bushing (14).
5. the electrode connection device of gas sensor according to claim 1, it is characterized in that: said butterfly card (4) and inner protective tube (13) are outside equipped with outer pillar (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210198528.5A CN102707019B (en) | 2012-06-17 | 2012-06-17 | Electrode connecting device of gas sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210198528.5A CN102707019B (en) | 2012-06-17 | 2012-06-17 | Electrode connecting device of gas sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102707019A true CN102707019A (en) | 2012-10-03 |
| CN102707019B CN102707019B (en) | 2014-05-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210198528.5A Active CN102707019B (en) | 2012-06-17 | 2012-06-17 | Electrode connecting device of gas sensor |
Country Status (1)
| Country | Link |
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| CN (1) | CN102707019B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106404841A (en) * | 2016-08-24 | 2017-02-15 | 浙江朗德电子科技有限公司 | Sensor chip structure |
| CN115266856A (en) * | 2022-06-15 | 2022-11-01 | 常州联德电子有限公司 | High-temperature multi-component flue gas sensor and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5223783A (en) * | 1992-05-01 | 1993-06-29 | Willis Technologies International, Inc. | Method and device for detecting reducing gas using semiconductor gas sensor |
| US5771004A (en) * | 1997-06-06 | 1998-06-23 | Motorola, Inc. | Gas detection system for a portable communication |
| EP1211508A2 (en) * | 2000-11-27 | 2002-06-05 | Kabushiki Kaisha Riken | Gas sensing and oxygen pumping device |
| EP1288658A2 (en) * | 2001-09-03 | 2003-03-05 | NGK Spark Plug Company Limited | Gas sensor with proton conduction layer |
| CN101865875A (en) * | 2009-04-16 | 2010-10-20 | 日本特殊陶业株式会社 | Gas sensor |
| GB2471998A (en) * | 2009-07-17 | 2011-01-26 | Gm Global Tech Operations Inc | Exhaust gas sensor |
-
2012
- 2012-06-17 CN CN201210198528.5A patent/CN102707019B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5223783A (en) * | 1992-05-01 | 1993-06-29 | Willis Technologies International, Inc. | Method and device for detecting reducing gas using semiconductor gas sensor |
| US5771004A (en) * | 1997-06-06 | 1998-06-23 | Motorola, Inc. | Gas detection system for a portable communication |
| EP1211508A2 (en) * | 2000-11-27 | 2002-06-05 | Kabushiki Kaisha Riken | Gas sensing and oxygen pumping device |
| EP1288658A2 (en) * | 2001-09-03 | 2003-03-05 | NGK Spark Plug Company Limited | Gas sensor with proton conduction layer |
| CN101865875A (en) * | 2009-04-16 | 2010-10-20 | 日本特殊陶业株式会社 | Gas sensor |
| GB2471998A (en) * | 2009-07-17 | 2011-01-26 | Gm Global Tech Operations Inc | Exhaust gas sensor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106404841A (en) * | 2016-08-24 | 2017-02-15 | 浙江朗德电子科技有限公司 | Sensor chip structure |
| CN115266856A (en) * | 2022-06-15 | 2022-11-01 | 常州联德电子有限公司 | High-temperature multi-component flue gas sensor and preparation method thereof |
| CN115266856B (en) * | 2022-06-15 | 2024-02-27 | 常州联德电子有限公司 | High-temperature multi-component smoke sensor and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102707019B (en) | 2014-05-21 |
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