CN207515916U - A kind of encapsulating structure of pyrostat - Google Patents
A kind of encapsulating structure of pyrostat Download PDFInfo
- Publication number
- CN207515916U CN207515916U CN201721697110.3U CN201721697110U CN207515916U CN 207515916 U CN207515916 U CN 207515916U CN 201721697110 U CN201721697110 U CN 201721697110U CN 207515916 U CN207515916 U CN 207515916U
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- protective cover
- temperature element
- conductive
- pyrostat
- casing
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Abstract
The utility model discloses a kind of encapsulating structure of pyrostat, including being arranged in protective cover for detecting the temperature element of temperature and be arranged on inside pipe casing for connecting the conductive filament of temperature element；The bottom of protective cover is nested in cannula tip and is fixedly connected with cannula tip；The protective cover is lower thin and upper thick, the molding barrel-shaped structure of punch process, and temperature element is arranged on the bottom of protective cover and is welded to connect with the bottom end of conductive filament by cylindrical shape lead rigidized cover；The interior conductive powder being filled with for fixing temperature element and conducting heat of the protective cover；It is provided with two parallel conductive filaments in described sleeve pipe, two conductive filaments pass through the insulation filling fen-ting position that is filled in casing.The temperature element of the utility model is attached by lead rigidized cover with conductive filament, strengthens the reliability of welding, the protective case of punch process molding structure not only increases the mechanical endurance of pyrostat, while also improves heat-transfer rate.
Description
Technical field
The utility model is related to sensor technical field, particularly a kind of temperature sensor measured for vehicle exhaust
Encapsulating structure.
Background technology
With motor vehicle emission state four, the implementation of five standard of state, the discharge of tail gas and completely burned must all pass through high temperature
Measure to realize control, tail gas measure will be pair with accessory protection and exhaust system supervise it is more and more important.Due to high temperature
Working sensor is in high temperature, the environment vibrated, in order to ensure the service life of pyrostat, the thermometric member of pyrostat
Part is generally housed in housing, and temperature element is welded by lead and conductive filament, and Heat Conduction Material is filled in probe, so both
It ensure that sensor conductive contact is secured, in turn ensure the response speed of temperature conduction.
At present, the encapsulating structure of common pyrostat is temperature element inside protective cover and conductive wire bond in the market
It connects in succession, the solid conductive powder of protective cover, one end is welded on casing, welded seal after the other end flattens.This assembling knot
Structure brings problems with：1) temperature element is directly welded with conductive filament, is easily failed under cold and hot impact；2) conductive powder meeting
There is non-uniform phenomenon with the vibration of sensor, cause heat-transfer rate slack-off；3) structural behaviour of protective cover is poor, easily damages
Bad temperature element.
Utility model content
The utility model technical issues that need to address are to provide a kind of encapsulation knot of the pyrostat of stable structure type
Structure strengthens the mechanical performance and reliability of pyrostat, improves temperature-responsive speed.
In order to solve the above technical problems, technical solution adopted in the utility model is as follows.
A kind of encapsulating structure of pyrostat is used to detect the temperature element of temperature and set including being arranged in protective cover
Put the conductive filament for being used to connect temperature element in inside pipe casing；The bottom of protective cover is nested in cannula tip and consolidates with cannula tip
Fixed connection；The protective cover is lower thin and upper thick, the molding barrel-shaped structure of punch process, and temperature element is arranged on the bottom of protective cover
Portion is simultaneously welded to connect with the bottom end of conductive filament by cylindrical shape lead rigidized cover；It is filled with to fix thermometric in the protective cover
Element and the conductive powder for conducting heat；Two parallel conductive filaments are provided in described sleeve pipe, two conductive filaments are by being filled in
Insulation filling fen-ting position in casing.
A kind of encapsulating structure of above-mentioned pyrostat, the conductive powder are high thermal conductivity conductive powder.
As a result of above technical scheme, technological progress acquired by the utility model is as follows.
The temperature element of the utility model is attached by lead rigidized cover with conductive filament, strengthens the reliable of welding
Property, the protective case of punch process molding structure not only increases the mechanical endurance of pyrostat, while also improves heat conduction
Speed.The utility model use high thermal conductivity conductive powder, after elevated cure can the strict package temperature element of consolidation, both
The mechanical failure of temperature element is avoided, in turn ensures the heat conductivity of sensor.
Description of the drawings
Fig. 1 is the structure diagram of the utility model；
Wherein：1. temperature element, 2. lead rigidized covers, 3. protective covers, 4. conductive filaments, 5. casings, 6. conductive powders, 7. are filled out
Fill powder.
Specific embodiment
Below in conjunction with specific embodiment, the present invention is further described in detail.
A kind of encapsulating structure of pyrostat, structure is as shown in Figure 1, including temperature element 1, lead rigidized cover 2, protect
Shield 3, conductive filament 4, casing 5, conductive powder 6 and filling powder 7；Temperature element 1 is used for detecting temperature, and lead rigidized cover 2 is used for connecting
Temperature element 1 and conductive filament 4 are connect, protective cover 3 is used for protecting temperature element 1, and casing 5 is used for protecting conductive filament 4, and conductive powder 6 is used
It fixes temperature element and conducts heat, filling powder 7 is used for positioning conductive filament 4.
There are two leads on temperature element 1, conductive filament 4 is welded by lead rigidized cover 2, lead rigidized cover 2 is cylinder
Shape, one end diameter is smaller, and one end is relatively large in diameter, and the smaller one end of 2 diameter of lead rigidized cover is inserted on the lead of temperature element 1,
And be welded and fixed, one end that lead rigidized cover 2 is relatively large in diameter is inserted on conductive filament 4, and is welded and fixed, and strengthens machine
Tool Performance And Reliability.Conductive filament 4 is arranged in casing 5, and two conductive filaments 4 are parallel in casing and pass through insulation filling powder
It is fixed.3 punch process of protective cover is molded, and is lower thin and upper thick barrel-shaped structure, and temperature element 1 is arranged on protective cover 3
Bottom is filled between temperature element 1 and protective cover 3 by conductive powder 6, and since protective cover bottom space is small, inside filling is led
Hot powder is high thermal conductivity conductive powder, increases exhaust temperature and leads warm speed to temperature element, using punch process molding structure
Protective cover 3, not only increase the mechanical endurance of sensor, while also improve the heat conductivity of temperature element；Protective cover 3
Openend be sleeved on casing 5, and be welded and fixed with the outer wall of casing 5, since the openend of protective cover 3 is bigger,
Also the outer diameter of casing 5 is increased accordingly, so as to increase the mechanical performance of casing.
The utility model pyrostat, first by two conductive filament threadings, is reserved in assembling at casing both ends
One section of conductive filament is welded, and is adjusted the position of two conductive filaments, is made two conductive filaments parallel, and filling insulation filling powder will be conductive
Silk is fixed, closed casing both ends；Then temperature element lead and conductive filament are inserted into the both ends of lead rigidized cover respectively, compression is drawn
Line rigidized cover surface makes lead rigidized cover tight temperature element lead and conductive filament, and is welded at the both ends of lead rigidized cover
Connect fixation；Protective cover opening upwards are disposed vertically, and the conductive powder solution that depth is 10~13mm is injected into protective cover, will be welded
Good temperature element is dipped vertically into protective cover bottom, in cover to be protected conductive powder it is dry and hard it is blocking after, be put into baking oven or high temperature furnace
Interior elevated cure；After the completion of curing, protective cover is sleeved on casing and is welded and fixed.
Due to conductive powder after elevated cure can the strict package temperature element of consolidation, both avoided the machine of temperature element
Tool damages, and in turn ensures the heat conductivity of sensor.
Claims (2)
1. a kind of encapsulating structure of pyrostat, including being arranged on protective cover（3）The interior temperature element for being used to detect temperature（1）
Be arranged on casing（5）Inside is used to connect temperature element（1）Conductive filament（4）；The bottom of protective cover is nested in cannula tip
And it is fixedly connected with cannula tip；It is characterized in that：The protective cover（3）It is molding barrel-shaped for lower thin and upper thick, punch process
Structure, temperature element（1）It is arranged on protective cover（3）Bottom and and conductive filament（4）Bottom end pass through cylindrical shape lead rigidized cover
（2）It is welded to connect；The protective cover（3）It is interior to be filled with to fix temperature element（1）And conduct the conductive powder of heat（6）；Institute
State casing（5）Inside it is provided with two parallel conductive filaments（4）, two conductive filaments（4）Pass through the insulation filling being filled in casing
Powder（7）Positioning.
2. a kind of encapsulating structure of pyrostat according to claim 1, it is characterised in that：The conductive powder（6）For height
Thermal conductivity conductive powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721697110.3U CN207515916U (en) | 2017-12-08 | 2017-12-08 | A kind of encapsulating structure of pyrostat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721697110.3U CN207515916U (en) | 2017-12-08 | 2017-12-08 | A kind of encapsulating structure of pyrostat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207515916U true CN207515916U (en) | 2018-06-19 |
Family
ID=62543418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721697110.3U Active CN207515916U (en) | 2017-12-08 | 2017-12-08 | A kind of encapsulating structure of pyrostat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207515916U (en) |
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2017
- 2017-12-08 CN CN201721697110.3U patent/CN207515916U/en active Active
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