CN211391241U - Double-pressure sensor for automobile - Google Patents
Double-pressure sensor for automobile Download PDFInfo
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- CN211391241U CN211391241U CN201922491724.1U CN201922491724U CN211391241U CN 211391241 U CN211391241 U CN 211391241U CN 201922491724 U CN201922491724 U CN 201922491724U CN 211391241 U CN211391241 U CN 211391241U
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- cavity
- circuit board
- printed circuit
- casing
- pressure
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Abstract
The utility model discloses a two pressure sensor of car, which comprises a housin, the casing divide into cavity and lower cavity, the welding has the upper cover on the casing, constitute the upper chamber between upper cover and the casing, it is equipped with the through-hole to go up between cavity and the lower cavity, be provided with printed circuit board in the upper chamber, it has differential pressure core and absolute pressure core to weld through the SMT paster on the printed circuit board, on cover and be equipped with the bleeder vent, the cavity is connected with the check valve down. The utility model discloses simple structure, cost of manufacture are low, can not only detect the pressure differential of vacuum line internal gas pressure and external atmospheric pressure simultaneously can the external atmospheric pressure of real-time detection.
Description
Technical Field
The utility model relates to an automobile vacuum servo system, especially a two pressure sensor of car.
Background
At present, for an automobile power-assisted system, two pressure sensors, namely differential pressure and absolute pressure, are mainly adopted to monitor the internal pressure of a pipeline, and CN207120746U discloses a vacuum pump control system with two pressure sensors, which comprises a vacuum tank, a vacuum pump controller and a vacuum pump connected with a vacuum tank hose, wherein the vacuum pump is in signal connection with the vacuum pump controller; the absolute pressure sensor is used for monitoring an absolute pressure value in the vacuum tank, and the differential pressure sensor is used for monitoring a difference value between the pressure in the vacuum tank and the atmospheric pressure. The technical scheme has complex assembly and higher cost.
Disclosure of Invention
To the problem that exists among the prior art, the utility model provides a simple structure, cost of manufacture are low, can not only detect the pressure differential of vacuum pipeline internal gas pressure and external atmospheric pressure simultaneously can real-time detection external atmospheric pressure double pressure sensor of car.
The purpose of the utility model is realized through the following technical scheme.
The utility model provides a two pressure sensor of car, includes the casing, the casing divide into cavity and lower cavity, the welding has the upper cover on the casing, constitute the cavity between upper cover and the casing, it is equipped with the through-hole to go up between cavity and the lower cavity, be provided with printed circuit board in the cavity, it has differential pressure core and absolute pressure core to weld through the SMT paster on the printed circuit board, on cover and be equipped with the bleeder vent, the cavity connection has the check valve down.
The printed circuit board is fixed on the shell, the pins of the differential pressure core body and the absolute pressure core body are integrally injection-molded with the shell in a pre-embedded mode, and the pins of the differential pressure core body and the absolute pressure core body are welded with the printed circuit board.
The shell and the upper cover are welded through ultrasonic waves.
And the breathable film is welded at the breathable hole.
And a sealing gasket is arranged between the printed circuit board and the through hole.
Compared with the prior art, the utility model has the advantages of: simple structure, cost of manufacture are low, can not only detect the pressure differential of vacuum line internal gas pressure and external atmospheric pressure simultaneously can real-time detection external atmospheric pressure, go up the cavity and communicate with each other through ventilated membrane and atmosphere, and the product can prevent effectively that the comdenstion water from getting into inside cavity.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of the structure of the upper cover.
In the figure: 1. the pressure-resistant sealing device comprises a shell 2, an upper cover 3, an upper cavity 4, a lower cavity 5, a printed circuit board 6, a differential pressure core body 7, an absolute pressure core body 8, an air vent 9, an air permeable membrane 10 and a sealing gasket.
Detailed Description
The invention is described in detail below with reference to the drawings and specific examples.
As shown in fig. 1, a two pressure sensor of car, including casing 1, casing 1 divide into cavity 3 and cavity 4 down, the welding has upper cover 2 on casing 1, constitute cavity 3 between upper cover 2 and the casing 1, it is equipped with the through-hole to go up between cavity 3 and the cavity 4 down, upward be provided with printed circuit board 5 in the cavity 3, there are differential pressure core 6 and the absolute pressure core 7 through the welding of SMT paster on the printed circuit board 5, be equipped with bleeder vent 8 on the upper cover 2, cavity 4 is connected with the check valve down.
The printed circuit board is fixed on the shell through three self-tapping screws, the pins of the differential pressure core body and the absolute pressure core body are formed by injection molding with the shell in an embedded mode, and the pins of the differential pressure core body and the absolute pressure core body are welded with the printed circuit board.
The shell and the upper cover are welded through ultrasonic waves.
A sealing gasket 10 is provided between the printed circuit board and the through-hole.
As shown in fig. 2, a breathable film 9 is welded at the vent hole 8.
Claims (5)
1. The utility model provides a two pressure sensor of car, includes the casing, its characterized in that the casing divide into cavity and lower cavity, the welding has the upper cover on the casing, constitute the cavity between upper cover and the casing, it is equipped with the through-hole to go up between cavity and the lower cavity, be provided with printed circuit board in the cavity, it has differential pressure core and absolute pressure core to weld through the SMT paster on the printed circuit board, on cover and be equipped with the bleeder vent, the cavity connection has the check valve down.
2. The dual pressure sensor of claim 1, wherein the printed circuit board is fixed to the housing, the pins of the differential pressure core and the absolute pressure core are integrally injection molded with the housing in a pre-embedded manner, and the pins of the differential pressure core and the absolute pressure core are welded to the printed circuit board.
3. The dual pressure sensor of claim 1 or 2, wherein the housing and the cover are ultrasonically welded.
4. The dual pressure sensor of claim 1 or 2, wherein the gas permeable membrane is welded to the gas vent.
5. The dual pressure sensor for vehicle as claimed in claim 1 or 2, wherein a gasket is disposed between the printed circuit board and the through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922491724.1U CN211391241U (en) | 2019-12-31 | 2019-12-31 | Double-pressure sensor for automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922491724.1U CN211391241U (en) | 2019-12-31 | 2019-12-31 | Double-pressure sensor for automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211391241U true CN211391241U (en) | 2020-09-01 |
Family
ID=72227734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922491724.1U Active CN211391241U (en) | 2019-12-31 | 2019-12-31 | Double-pressure sensor for automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211391241U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111237071A (en) * | 2020-01-21 | 2020-06-05 | 武汉神动汽车电子电器股份有限公司 | Air flow sensor |
-
2019
- 2019-12-31 CN CN201922491724.1U patent/CN211391241U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111237071A (en) * | 2020-01-21 | 2020-06-05 | 武汉神动汽车电子电器股份有限公司 | Air flow sensor |
| CN111237071B (en) * | 2020-01-21 | 2022-06-24 | 武汉神动汽车电子电器股份有限公司 | Air flow sensor |
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