CN215004076U - Dustproof and oilproof structure of pressure sensor - Google Patents
Dustproof and oilproof structure of pressure sensor Download PDFInfo
- Publication number
- CN215004076U CN215004076U CN202121490519.4U CN202121490519U CN215004076U CN 215004076 U CN215004076 U CN 215004076U CN 202121490519 U CN202121490519 U CN 202121490519U CN 215004076 U CN215004076 U CN 215004076U
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- Prior art keywords
- shell
- pressure sensor
- circuit board
- dustproof
- sealing cover
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- 229920000742 Cotton Polymers 0.000 claims abstract description 28
- 230000001681 protective effect Effects 0.000 claims abstract description 27
- 238000007789 sealing Methods 0.000 claims abstract description 23
- 230000000903 blocking effect Effects 0.000 claims description 3
- 239000004519 grease Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 12
- 239000000428 dust Substances 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 3
- 238000000926 separation method Methods 0.000 abstract description 3
- 238000001914 filtration Methods 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000012528 membrane Substances 0.000 description 7
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 125000003003 spiro group Chemical group 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Measuring Fluid Pressure (AREA)
Abstract
The utility model discloses a dustproof and oil-proof structure of a pressure sensor, which comprises a shell, wherein a circuit board is arranged in the shell, a joint is arranged at the lower end of the shell, a central through hole is arranged in the joint, threads are arranged on the surface of the joint, a pressure sensor chip and a chip protective film are arranged in the shell, a sealing cover is screwed at the upper end of the shell, a protective shell is arranged at the upper end of the sealing cover, two groups of clamping grooves are arranged in the protective shell, a first waterproof film and first dustproof cotton are respectively arranged in the two groups of clamping grooves, a conduit is arranged at the left side surface of the protective shell, a lead is inserted in the conduit, a sealing cover is screwed at the left end of the conduit, a second waterproof film and second dustproof cotton are arranged in the conduit, an annular separation blade is arranged at the right side of the second dustproof cotton, the utility model has good filtering effect on external dust and water vapor, and the chip protective film resists the external pressure, the service life of the pressure sensor is prolonged.
Description
Technical Field
The utility model relates to a pressure sensor technical field specifically is a pressure sensor's dustproof grease proofing structure.
Background
A pressure sensor is a device or apparatus that senses a pressure signal and converts the pressure signal into a usable output electrical signal according to a certain rule. A pressure sensor is usually composed of a pressure sensitive element and a signal processing unit. Pressure sensors can be classified into gauge pressure sensors, differential pressure sensors, and absolute pressure sensors according to different types of test pressures. The protection effect of the protection structure of a common pressure sensor is not ideal, when the external pressure is suddenly increased, the pressure sensitive element is easy to be extruded and damaged, and particularly when the pressure of liquid is monitored, the signal processing unit is damaged due to the fact that the environment where the pressure sensor is located is moist and more dust exists, and the service life of the pressure sensor is influenced. Therefore, a dust-proof and oil-proof structure of the pressure sensor is provided.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a pressure sensor's dustproof grease proofing structure to solve the problem that proposes in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: a dustproof and oil-proof structure of a pressure sensor comprises a shell, wherein a first nut is arranged on the lower portion of the surface of the shell, an annular groove is formed in the lower end of the shell, a sealing ring is arranged inside the annular groove, a circuit board is arranged inside the shell, connecting lugs are arranged on the left side and the right side of the circuit board, and the connecting lugs and the circuit board are integrally formed;
the connecting lug is fixedly connected to the inner wall of the shell, the lower end of the shell is provided with a joint, the joint and the shell are integrally formed and can be made of stainless steel materials, a central through hole is formed in the joint and communicated with the interior of the shell, threads are arranged on the surface of the joint, a pressure sensor chip and a chip protective film are arranged in the shell, the chip protective film is positioned below the pressure sensor chip, and the pressure sensor chip is electrically connected with the circuit board through an electric wire;
the upper end of the shell is in threaded connection with a sealing cover, a protective shell is arranged at the upper end of the sealing cover and integrally formed with the sealing cover, a second nut is arranged on the surface of the protective shell, two groups of clamping grooves are formed in the protective shell, a first waterproof film and first dustproof cotton are respectively arranged in the two groups of clamping grooves, the first waterproof film is positioned above the first dustproof cotton, a guide pipe is arranged on the left side surface of the protective shell, and a lead is inserted into the guide pipe;
the pipe left end spiro union has sealed lid, and the wire runs through sealed lid, place second water proof membrane and the dustproof cotton of second in the pipe, the second water proof membrane is located the dustproof cotton left side of second, the dustproof cotton right side of second is equipped with the annular separation blade, and the dustproof cotton of second supports on the annular separation blade surface, the inside pressure pipe that is equipped with of sealed lid presses the pipe, presses the pipe to support at the waterproof membrane position surface of second, and the wire runs through first water proof membrane, first dustproof cotton, the waterproof membrane of second, the dustproof cotton of second, wire and circuit board electric connection.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a sealed lid blocks the pipe, the second water proof membrane in the pipe and second dustproof cotton carry out the first round to steam and dust in the air and filter, the first water proof membrane in the protective housing and first dustproof cotton carry out the second round to steam and dust and filter, prevent that steam and dust from getting into in the casing, arouse the circuit board short circuit, external gas pressure or water pressure or oil pressure get into in the casing through central through-hole, the chip protection film bears pressure at first, then the chip protection film extrudes the pressure sensor chip again, protect the pressure sensor chip, prevent that external pressure from too big arousing the damage of pressure sensor chip;
the utility model discloses it is good to external dust and steam filter effect, and the chip protection film is resisted ambient pressure, and extension pressure sensor's life has improved pressure sensor's protective structure's practicality.
Drawings
FIG. 1 is a schematic sectional view of the present invention;
FIG. 2 is an enlarged schematic view of the structure of FIG. 1;
fig. 3 is an enlarged schematic structural diagram of the present invention at B in fig. 2.
In the figure: 1. a housing; 2. connecting lugs; 3. a circuit board; 4. a pressure sensor chip; 5. a chip protection film; 6. an electric wire; 7. a joint; 8. a central through hole; 9. a thread; 10. an annular groove; 11. a seal ring; 12. a first nut; 13. sealing the cover; 14. a protective shell; 15. a card slot; 16. a first water-resistant film; 17. first dust-proof cotton; 18. a conduit; 19. a wire; 20. a sealing cover; 21. pressing a pipe; 22. a second water-resistant film; 23. second dust-proof cotton; 24. an annular baffle plate; 26. a second nut.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: a dustproof and oil-proof structure of a pressure sensor comprises a shell 1, wherein a circuit board 3 is arranged in the shell 1, a joint 7 is arranged at the lower end of the shell 1, a central through hole 8 is formed in the joint 7, the central through hole 8 is communicated with the interior of the shell 1, threads 9 are arranged on the surface of the joint 7, and can be in threaded connection with an external pipeline through the threads 9, so that the dustproof and oil-proof structure is convenient to install;
the pressure sensor chip 4 and the chip protection film 5 are arranged inside the shell 1, the chip protection film 5 plays a role in buffering and protecting the pressure sensor chip 4, the upper end of the shell 1 is in threaded connection with the sealing cover 13, the upper end of the sealing cover 13 is provided with the protection shell 14, and the protection shell 14 is matched with the sealing cover 13 to seal the upper end of the shell 1;
two groups of clamping grooves 15 are formed in the protective shell 14, a first waterproof film 16 and first dustproof cotton 17 are respectively arranged in the two groups of clamping grooves 15, the two groups of clamping grooves 15 limit the first waterproof film 16 and the first dustproof cotton 17, and the first waterproof film 16 and the first dustproof cotton 17 are prevented from shaking in the protective shell 14;
the left side of the protective shell 14 is provided with a guide pipe 18, a lead 19 is inserted into the guide pipe 18, the left end of the guide pipe 18 is screwed with a sealing cover 20, a second waterproof film 22 and second dustproof cotton 23 are placed in the guide pipe 18, the right side of the second dustproof cotton 23 is provided with an annular blocking piece 24, a pressure pipe 21 is arranged in the sealing cover 20, the annular blocking piece 24 is matched with the pressure pipe 21 to limit the second waterproof film 22 and the second dustproof cotton 23, and the second waterproof film 22 and the second dustproof cotton 23 are prevented from moving in the guide pipe 18.
Specifically, 3 left and right sides of circuit board all are equipped with engaging lug 2, engaging lug 2 and 3 integrated into one piece of circuit board, 2 fixed connection of engaging lug are fixed circuit board 3 on 1 inner wall of casing, prevent that it from rocking.
Specifically, the lower end of the shell 1 is provided with an annular groove 10, a sealing ring 11 is arranged inside the annular groove 10, and the sealing ring 11 is abutted to the surface of an external pipeline to enhance the sealing performance of the joint 7 connected with the external pipeline.
Specifically, wire 19 and circuit board 3 electric connection for supply power to circuit board 3, and output pressure value, pressure sensor chip 4 passes through electric wire 6 and circuit board 3 electric connection, and circuit board 3 supplies power to pressure sensor chip 4, calculates the pressure that pressure sensor chip 4 bore simultaneously.
Specifically, the lower part of the surface of the shell 1 is provided with a first nut 12 which is convenient for screwing the joint 7, and the surface of the protective shell 14 is provided with a second nut 26 which is convenient for connecting the protective shell 14 and the shell 1.
Specifically, when the device is used, the first nut 12 is screwed by a wrench, the first nut 12 drives the shell 1 and the joint 7 to rotate, the thread 9 on the surface of the joint 7 is connected with an external pipeline, the sealing ring 11 is tightly abutted to the surface of the external pipeline, the lead 19 is connected with an external power supply and a monitor, gas or water or oil in the external pipeline extrudes the chip protective film 5 through the central through hole 8, the chip protective film 5 extrudes the pressure sensor chip 4, the circuit board 3 receives a signal of the pressure sensor chip 4 through the wire 6 and outputs the signal to the outside through the lead 19, dust and water vapor in the external air are firstly filtered by the second waterproof film 22 and the second dustproof cotton 23 for a first round, when the dust and water vapor in the air enter the protective shell 14 through the second waterproof film 22 and the second dustproof cotton 23, the first waterproof film 16 and the first dustproof cotton 17 are filtered again, the protection circuit board 3 can not be damaged, prolongs pressure sensor life.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a pressure sensor's dustproof grease proofing structure, includes casing (1), its characterized in that: the pressure sensor is characterized in that a circuit board (3) is arranged in the shell (1), a connector (7) is arranged at the lower end of the shell (1), a central through hole (8) is arranged in the connector (7), the central through hole (8) is communicated with the interior of the shell (1), threads (9) are arranged on the surface of the connector (7), a pressure sensor chip (4) and a chip protective film (5) are arranged in the shell (1), a sealing cover (13) is connected to the upper end of the shell (1) in a threaded manner, a protective shell (14) is arranged at the upper end of the sealing cover (13), two groups of clamping grooves (15) are arranged in the protective shell (14), a first waterproof film (16) and a first dustproof cotton (17) are respectively arranged in the two groups of clamping grooves (15), a guide pipe (18) is arranged on the left side face of the protective shell (14), a guide wire (19) is inserted into the guide pipe (18), and a sealing cover (20) is connected to the left end of the guide pipe (18) in a threaded manner, a second waterproof film (22) and second dustproof cotton (23) are placed in the guide pipe (18), an annular blocking piece (24) is arranged on the right side of the second dustproof cotton (23), and a pressing pipe (21) is arranged inside the sealing cover (20).
2. The dust-proof and oil-proof structure of the pressure sensor according to claim 1, wherein: the circuit board (3) left and right sides all is equipped with engaging lug (2), engaging lug (2) and circuit board (3) integrated into one piece, engaging lug (2) fixed connection is on casing (1) inner wall.
3. The dust-proof and oil-proof structure of the pressure sensor according to claim 1, wherein: the lower end of the shell (1) is provided with an annular groove (10), and a sealing ring (11) is arranged inside the annular groove (10).
4. The dust-proof and oil-proof structure of the pressure sensor according to claim 1, wherein: the lead (19) is electrically connected with the circuit board (3), and the pressure sensor chip (4) is electrically connected with the circuit board (3) through the electric wire (6).
5. The dust-proof and oil-proof structure of the pressure sensor according to claim 1, wherein: the lower part of the surface of the shell (1) is provided with a first nut (12), and the surface of the protective shell (14) is provided with a second nut (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121490519.4U CN215004076U (en) | 2021-07-01 | 2021-07-01 | Dustproof and oilproof structure of pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121490519.4U CN215004076U (en) | 2021-07-01 | 2021-07-01 | Dustproof and oilproof structure of pressure sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215004076U true CN215004076U (en) | 2021-12-03 |
Family
ID=79105506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121490519.4U Active CN215004076U (en) | 2021-07-01 | 2021-07-01 | Dustproof and oilproof structure of pressure sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215004076U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114414137A (en) * | 2022-01-26 | 2022-04-29 | 厦门乃尔电子有限公司 | Dust cap of pressure sensor |
-
2021
- 2021-07-01 CN CN202121490519.4U patent/CN215004076U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114414137A (en) * | 2022-01-26 | 2022-04-29 | 厦门乃尔电子有限公司 | Dust cap of pressure sensor |
| CN114414137B (en) * | 2022-01-26 | 2024-05-28 | 厦门乃尔电子有限公司 | Dustproof cap of pressure sensor |
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