CN207036758U - A kind of potentiometric oxygen sensor encapsulating structure - Google Patents
A kind of potentiometric oxygen sensor encapsulating structure Download PDFInfo
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- CN207036758U CN207036758U CN201720736188.5U CN201720736188U CN207036758U CN 207036758 U CN207036758 U CN 207036758U CN 201720736188 U CN201720736188 U CN 201720736188U CN 207036758 U CN207036758 U CN 207036758U
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- sleeve
- porcelain piece
- pedestal
- oxygen sensor
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Abstract
A kind of potentiometric oxygen sensor is the utility model is related to, more particularly, to a kind of potentiometric oxygen sensor encapsulating structure.The potentiometric oxygen sensor encapsulating structure, including pedestal, sleeve, four hole fluorine plugs, shield and sensing element, the first porcelain piece and the second porcelain piece are provided between sensing element cylindrical wall and base internal wall, it is folded with sealing muffin between the opposing end surface of first porcelain piece and the second porcelain piece, pellicle is provided with the passage on four hole fluorine plugs.By the way that pedestal inner chamber is designed into four-part form shoulder hole so that structure is compacter, easier for installation；Sealing muffin is arranged in less second sector hole, reduces the sectional area of sealing muffin so that the better tightness of potentiometric oxygen sensor encapsulating structure；By setting pellicle in the passage of four hole fluorine plugs, the air of the vehicle exhaust and outside entered in epicoele is set to carry out circulation displacement, it is ensured that the pure property of gas of upper intracavitary, and pellicle energy exclusion of water enters upper intracavitary so as to protect each element in epicoele.
Description
Technical field
A kind of potentiometric oxygen sensor is the utility model is related to, encapsulates and ties more particularly, to a kind of potentiometric oxygen sensor
Structure.
Background technology
At present, the laws and regulations requirement of vehicular emission is more and more stricter, therefore the electric injection system of closed-loop control will turn into main flow,
Oxidation sensors are elements essential on modern closed loop reaction type automobile, it may be said that the quality of oxidation sensors directly affects
The composition of engine exhaust emission.Chip oxygen sensor complex manufacturing technology common at present, cost of manufacture is high, sensor
Sensitivity is relatively low.
The sensing element of existing potentiometric oxygen sensor is by front end ceramic member and rear end ceramic member and the sealing muffin of centre
Sealing is fixed on pedestal inner chamber, and because lambda sensor sealing is not sufficiently good, vehicle exhaust is easily scurried into epicoele, is caused
Vehicle exhaust is mixed into the air of chamber causes lambda sensor precision to weaken, or even failure.
Utility model content
To solve problem above, the utility model provides a kind of potentiometric oxygen sensor encapsulating structure, and the concentration difference type oxygen passes
Sensor encapsulating structure is compact-sized, simple and testing result is accurate.
The technical solution adopted in the utility model is：A kind of potentiometric oxygen sensor encapsulating structure, including pedestal, be arranged on
The sleeve of pedestal rear end, the four hole fluorine plugs for being arranged on sleeve rear end, it is arranged on the shield of pedestal front end and is arranged in pedestal
Sensing element, it is characterised in that：The sensing element front end is extend into shield through pedestal, the sensing element rear end and four hole fluorine
The 3rd porcelain piece and four hole insulation sleeves are provided between plug bottom, wire base, four hole are provided with the four holes fluorine plug
Pellicle is provided with passage on fluorine plug, insulation sleeve, the biography are provided between the 3rd porcelain piece cylindrical wall and sleeve lining
Feel and the first porcelain piece and the second porcelain piece, the opposite end of first porcelain piece and the second porcelain piece are provided between first cylindrical wall and base internal wall
Sealing muffin is folded between face, the sealing muffin is set on sensing element, and periphery is interference fitted with base internal wall, described
Shield is provided with the tail gas through hole that some steam supply tail gas pass through, and the sleeve leads to provided with some for the air that air passes through
Hole.
Preferably, the sleeve includes outer sleeve, inner sleeve and after sleeve, the inner sleeve is by the rear end of the second porcelain piece
In being set in, one end is resisted against on insulation sleeve end face, and the other end is resisted against on the flange surface of the second porcelain piece；The outer sleeve is set
Outside inner sleeve, inner sleeve, the 3rd porcelain piece and four hole insulation sleeves are set in, flange surface is resisted against on insulation sleeve end face；Institute
State after sleeve and be arranged on the outer rear end of outer sleeve, four hole fluorine plugs and four hole insulation sleeves are set in interior.
Preferably, the pedestal uses hexagonal pedestal, the pedestal inner chamber uses four-part form shoulder hole, respectively internal diameter
The first sector hole, the second sector hole, the 3rd sector hole and the 4th sector hole gradually increased, the first porcelain piece end face are resisted against the first sector hole
On the flange surface of the second sector hole, the sealing muffin is arranged in the second sector hole, and the second porcelain piece flange surface is resisted against the
On the flange surface of two sector holes and the 3rd sector hole, the front end of the inner sleeve is stretched into the 4th sector hole and is resisted against the second porcelain piece flange
On face.
The utility model obtain beneficial effect be：By the way that pedestal inner chamber is designed into four-part form shoulder hole so that structure
It is compacter, it is easier for installation；Sealing muffin is arranged in less second sector hole, reduces the section of sealing muffin
Product so that the better tightness of potentiometric oxygen sensor encapsulating structure；It is semi-transparent by being set in the passage of four hole fluorine plugs
Film, the air of the vehicle exhaust and outside entered in epicoele is set to carry out circulation displacement, it is ensured that the pure property of gas of upper intracavitary, and half
Permeable membrane energy exclusion of water enters upper intracavitary so as to protect each element in epicoele.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the top view of four hole fluorine plugs；
Fig. 3 is the sectional view of four hole fluorine plugs.
Embodiment
The utility model is further described with specific embodiment below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of potentiometric oxygen sensor encapsulating structure of the present utility model, including pedestal 1, sleeve (overcoat
Cylinder 21, inner sleeve 22 and after sleeve 23), four hole fluorine plugs 3 (wire base is set in four hole fluorine plugs), shield 4, sensing
Member 5, porcelain piece (the first porcelain piece 61, the second porcelain piece 62 and the 3rd porcelain piece 63) and sealing muffin 7, it is cavity structure that pedestal 1 is interior, sensing
Member 5 is arranged on by the first porcelain piece 61, the second porcelain piece 62 and the 3rd porcelain piece 63 in the cavity of pedestal 1, after sleeve is arranged on pedestal 1
End, sleeve rear end is provided with four hole fluorine plugs 3, shield 4 by the second porcelain piece 62, the 3rd porcelain piece 63 and the rear end of sensing element 5 set inside
The front end of pedestal 1 is arranged on, by the front end sleeve of sensing element 5 inside；The front end of sensing element 5 is extend into shield 4 through pedestal 1, sensing
The 3rd porcelain piece 63 and four hole insulation sleeves 8 are provided between first 5 rear ends and four hole fluorine plug 3 (wire base) bottoms, outside sensing element 5
Be provided with the first porcelain piece 61 and the second porcelain piece 62 between circle wall and the inwall of pedestal 1, the first porcelain piece 61 and the second porcelain piece 62 it is relative
Sealing muffin 7 is folded between end face, sealing muffin 7 is set on sensing element 5, and periphery is interference fitted with the inwall of pedestal 1；Shield
Cover 4 is provided with the tail gas through hole 41 that some steam supply tail gas pass through, and outer sleeve 21 and the corresponding position of after sleeve 23 are equipped with some confessions
The air hole 23 that air passes through.
Three tube-in-tube structures, i.e. outer sleeve 21, inner sleeve 22 and after sleeve 23, inner sleeve 22 are used at four hole fluorine plugs 3
In the rear end of second porcelain piece 62 is set in, one end is resisted against on the end face of insulation sleeve 9, and the other end is resisted against the convex of the second porcelain piece 62
On edge face；Outer sleeve 21 is arranged on outside inner sleeve 22, inner sleeve 22, the 3rd porcelain piece 63 and four hole insulation sleeves 8 are set in,
Flange surface is resisted against on the end face of insulation sleeve 9；After sleeve 23 is arranged on 21 outer rear end of outer sleeve, and four hole fluorine plugs 3 and four holes are exhausted
In edge set 8 is set in.Four hole insulation sleeves 8 and insulation sleeve 9 cause wire base and exterior insulation in four hole fluorine plugs 3, prevent
External signal is disturbed；Integrally-built sealing is added using three tube-in-tube structures, and the use for adding four hole fluorine plugs 3 is strong
Degree so that four hole fluorine plugs 3 are more convenient when in use, and are hardly damaged.With reference to shown in Fig. 2-3, the ventilation of four hole fluorine plugs 3
Pellicle 32 is provided with hole 31, the air of the vehicle exhaust and outside entered in epicoele is carried out circulation displacement, it is ensured that upper intracavitary
The pure property of gas, and pellicle energy exclusion of water enters upper intracavitary so as to protecting each element in epicoele.
Pedestal 1 uses hexagonal pedestal, and the inner chamber of pedestal 1 uses four-part form shoulder hole, respectively internal diameter gradually increase first
Sector hole 11, the second sector hole 12, the 3rd sector hole 13 and the 4th sector hole 14, the end face of the first porcelain piece 61 are resisted against the first sector hole 11 and
On the flange surface of two sector holes 12, sealing muffin 7 is arranged in less second sector hole 12 of internal diameter, smaller sealing muffin 7 it is close
Seal sectional area so that better tightness, the boss face of the second porcelain piece 62 are resisted against the flange of the second sector hole 12 and the 3rd sector hole 13
On face, the front end of inner sleeve 22 is extend into the 4th sector hole 14 to be contacted with the boss face of the second porcelain piece 62.The inner chamber of pedestal 1 uses
Three-stage shoulder hole so that installation positioning is more convenient.
Claims (3)
1. a kind of potentiometric oxygen sensor encapsulating structure, including pedestal (1), it is arranged on the sleeve of pedestal (1) rear end, is arranged on set
Four hole fluorine plugs (3) of tube rear end, the sensing element (5) for being arranged on the shield (4) of pedestal (1) front end and being arranged in pedestal (1),
It is characterized in that：Sensing element (5) front end is extend into shield (4) through pedestal (1), sensing element (5) rear end and four
The 3rd porcelain piece (63) and four hole insulation sleeves (8) are provided between hole fluorine plug (3) bottom, are provided with the four holes fluorine plug (3)
Wire base, pellicle (32) is provided with the passage (31) on the four holes fluorine plug (3), the 3rd porcelain piece (63) is cylindrical
Insulation sleeve (9) is provided between wall and sleeve lining, the first porcelain piece is provided between sensing element (5) cylindrical wall and pedestal (1) inwall
(61) and the second porcelain piece (62), it is folded with sealing muffin between first porcelain piece (61) and the opposing end surface of the second porcelain piece (62)
(7), the sealing muffin (7) is set on sensing element (5), and periphery is interference fitted with pedestal (1) inwall, the shield (4)
The tail gas through hole (41) that some steam supply tail gas pass through is provided with, the sleeve is provided with some air holes passed through for air
(24)。
2. potentiometric oxygen sensor encapsulating structure according to claim 1, it is characterised in that：The sleeve includes outer sleeve
(21), inner sleeve (22) and after sleeve (23), in the rear end of the second porcelain piece (62) is set in by the inner sleeve (22), one end is supported
Lean against on insulation sleeve (9) end face, the other end is resisted against on the flange surface of the second porcelain piece (62)；In the outer sleeve (21) is arranged on
In sleeve (22) is set in outside, by inner sleeve (22), the 3rd porcelain piece (63) and four hole insulation sleeves (8), flange surface is resisted against insulation
Cover on (9) end face；The after sleeve (23) is arranged on outer sleeve (21) outer rear end, by four hole fluorine plugs (3) and four hole insulation sleeves
(8) in being set in.
3. potentiometric oxygen sensor encapsulating structure according to claim 2, it is characterised in that：The pedestal (1) uses six
Angle pedestal, pedestal (1) inner chamber use four-part form shoulder hole, the first sector hole (11) that respectively internal diameter gradually increases, second
Sector hole (12), the 3rd sector hole (13) and the 4th sector hole (14), the first porcelain piece (61) end face be resisted against the first sector hole (11) and
On the flange surface of second sector hole (12), the sealing muffin (7) is arranged in the second sector hole (12), and second porcelain piece (62) is convex
Edge face is resisted against on the flange surface of the second sector hole (12) and the 3rd sector hole (13), and the front end of the inner sleeve (22) stretches into the 4th section
In hole (14) and it is resisted against on the second porcelain piece (62) flange surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720736188.5U CN207036758U (en) | 2017-06-22 | 2017-06-22 | A kind of potentiometric oxygen sensor encapsulating structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720736188.5U CN207036758U (en) | 2017-06-22 | 2017-06-22 | A kind of potentiometric oxygen sensor encapsulating structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207036758U true CN207036758U (en) | 2018-02-23 |
Family
ID=61468906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720736188.5U Active CN207036758U (en) | 2017-06-22 | 2017-06-22 | A kind of potentiometric oxygen sensor encapsulating structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207036758U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113884622A (en) * | 2021-09-17 | 2022-01-04 | 煤炭科学技术研究院有限公司 | Protective air chamber structure for sensitive element of mining sensor |
-
2017
- 2017-06-22 CN CN201720736188.5U patent/CN207036758U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113884622A (en) * | 2021-09-17 | 2022-01-04 | 煤炭科学技术研究院有限公司 | Protective air chamber structure for sensitive element of mining sensor |
| CN113884622B (en) * | 2021-09-17 | 2023-11-10 | 煤炭科学技术研究院有限公司 | Protective air chamber structure of sensitive element of mining sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210602 Address after: 430000 Wuhan Economic and Technological Development Zone, Wuhan, Hubei Province 2mA plot office and production building 1 (Oriental Industrial Park Building 5) (incubator hcy-x08) Patentee after: Wuhan Rubik's cube Qichuang Auto Parts Co.,Ltd. Address before: 430056 Changhua Industrial Park, the fourth northwest Hu Road, Wuhan Economic and Technological Development Zone, Hubei Province Patentee before: WUHAN ZIRCONIA ELECTRONIC TECHNOLOGY Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 437000 in henger road intelligent electromechanical Industrial Park, phase II, high tech Zone, Xianning City, Hubei Province Patentee after: Wuhan Shengshi Qichuang Technology Co.,Ltd. Address before: 430000 Wuhan Economic and Technological Development Zone, Wuhan, Hubei Province 2mA plot office and production building 1 (Oriental Industrial Park Building 5) (incubator hcy-x08) Patentee before: Wuhan Rubik's cube Qichuang Auto Parts Co.,Ltd. |