CN110823441A - Pressure sensor structure - Google Patents
Pressure sensor structure Download PDFInfo
- Publication number
- CN110823441A CN110823441A CN201911026282.1A CN201911026282A CN110823441A CN 110823441 A CN110823441 A CN 110823441A CN 201911026282 A CN201911026282 A CN 201911026282A CN 110823441 A CN110823441 A CN 110823441A
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- CN
- China
- Prior art keywords
- circuit board
- pressure sensor
- shell
- cavity
- soft circuit
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/0061—Electrical connection means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/14—Housings
- G01L19/142—Multiple part housings
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/14—Housings
- G01L19/148—Details about the circuit board integration, e.g. integrated with the diaphragm surface or encapsulation
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention relates to the technical field of sensors, in particular to a pressure sensor structure, which comprises: terminal buttons, a shell, a sensitive element and a soft circuit board; one end of the terminal button is provided with an open first cavity, and one end of the shell is provided with an open second cavity; the terminal button is fixedly connected with the shell, and the first cavity and the second cavity are connected into a whole; the sensing element is arranged in the second cavity; the soft circuit board is arranged in the first cavity, one end of the soft circuit board is connected with the terminal button, and the other end of the soft circuit board is connected with the sensitive element; and the grounding wire of the soft circuit board is fixed between the terminal button and the shell. According to the pressure sensor structure provided by the invention, the grounding wire of the soft circuit board is fixed between the terminal button and the shell, and a metal press ring is not required to be adopted for connecting the grounding wire, so that the structure of the sensor is simplified, the assembly procedures are reduced, and the production efficiency is improved.
Description
Technical Field
The invention relates to the technical field of sensors, in particular to a pressure sensor structure.
Background
A PS (Pressure Sensor) is a device or apparatus that can sense a Pressure signal and can convert 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. Referring to fig. 1, a metal press ring 3 is adopted on a current pressure sensor to press a grounding end on a soft circuit board to ensure contact with the soft board, and the metal press ring 3 and a shell 5 are in interference fit to enable the soft circuit board 2 to be connected with the shell 5. The connection mode causes the sensor to have complex structure, more product parts, long working procedure and certain difficulty in assembly.
Disclosure of Invention
The invention provides a pressure sensor structure aiming at the technical problems of complex structure and difficult assembly of the pressure sensor caused by the fact that the pressure sensor adopts a metal pressure ring to be connected with the grounding end of a soft circuit board in the prior art.
The technical scheme for solving the technical problems is as follows:
a pressure sensor structure comprising: terminal buttons, a shell, a sensitive element and a soft circuit board; one end of the terminal button is provided with an open first cavity, and one end of the shell is provided with an open second cavity; the terminal button is fixedly connected with the shell, and the first cavity and the second cavity are connected into a whole; the sensing element is arranged in the second cavity; the soft circuit board is arranged in the first cavity, one end of the soft circuit board is connected with the terminal button, and the other end of the soft circuit board is connected with the sensitive element; and the grounding wire of the soft circuit board is fixed between the terminal button and the shell.
In the preferred scheme, the shell is matched with the terminal button after being riveted, and the grounding wire is fixed on the inner side of the riveting part of the shell.
In a preferred scheme, the number of the grounding wires is two, and the grounding wires are distributed on two sides of the soft circuit board.
In the preferred scheme, the soft circuit board is made of a polycyanoargon amine material.
In the preferred scheme, the shell is made of carbon structural steel.
In a preferable scheme, the surface of the shell is plated with a white zinc layer.
The pressure sensor structure provided by the invention at least has the following beneficial effects or advantages:
according to the pressure sensor structure provided by the invention, one end of the terminal button is provided with an open first cavity, and one end of the shell is provided with an open second cavity; the terminal button is fixedly connected with the shell, and the first cavity and the second cavity are connected into a whole; the sensitive element is arranged in the second chamber; the soft circuit board is arranged in the first cavity; all parts in the pressure sensor are arranged neatly and are convenient to assemble. One end of the soft circuit board is welded with the end button, and the other end of the soft circuit board is welded with the input end and the output end of the sensitive element, so that a reliable power supply can be provided for the pressure sensor, signals of the pressure sensor are output, and the sensor is high in sensitivity and reliability. According to the pressure sensor structure provided by the invention, the grounding wire of the soft circuit board is fixed between the terminal button and the shell, and a metal press ring is not required to be adopted for connecting the grounding wire, so that the structure of the sensor is simplified, the assembly procedures are reduced, and the production efficiency is improved.
Furthermore, according to the pressure sensor structure provided by the invention, the shell is matched with the terminal button after being riveted, and the grounding wire is fixed on the inner side of the riveting part of the shell. Because the grounding wire is fixed on the inner side of the riveting turnover part of the shell, the grounding wire and the shell can be reliably connected.
Furthermore, the pressure sensor structure provided by the invention has the advantages that the two grounding wires are arranged, the grounding wires are distributed on the two sides of the soft circuit board, and when one grounding wire is separated from the grounding wire, the other grounding wire is still connected with the shell, so that the normal work of the pressure sensor can be ensured.
Furthermore, according to the pressure sensor structure provided by the invention, the soft circuit board is made of the polycyanoargon amine material, and the pressure sensor structure has the advantages of good flexibility and high strength.
Furthermore, the shell of the pressure sensor structure provided by the invention is made of carbon structural steel, so that the pressure sensor structure has good stamping property and provides a good material foundation for riveting and turning the shell. The surface of the shell is plated with a white zinc layer which has a certain protection effect.
Drawings
FIG. 1 is a schematic diagram of a prior art pressure sensor;
FIG. 2 is a schematic structural diagram of a pressure sensor according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a flexible circuit board according to an embodiment of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1-terminal button, 2-soft circuit board, 21-welding hole, 22-grounding wire, 3-metal press ring, 5-sensitive element and 6-shell.
Detailed Description
The invention provides a pressure sensor structure aiming at the technical problems of complex structure and difficult assembly of the pressure sensor caused by the fact that the pressure sensor adopts a metal pressure ring to be connected with the grounding end of a soft circuit board 2 in the prior art.
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 a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
An embodiment of the present invention provides a pressure sensor structure, which is shown in fig. 2 and 3, and mainly includes: terminal 1, shell 6, sensing element 5 and soft circuit board 2. One end of the terminal button 1 is provided with an open first cavity, and the first cavity is in a circular truncated cone shape with a small upper end caliber and a large lower end caliber and is used for providing an installation space for the soft circuit board 2 and related components; one end of the housing 6 is provided as an open second chamber, which is provided in a cylindrical shape for providing a mounting space for the sensor 5 and related components. Terminal button 1 can be with shell 6 fixed connection, and after terminal button 1 and shell 6 fixed connection, first cavity is connected as an organic whole with the second cavity. The sensing element 5 is arranged in the second chamber, in particular, the sensing element 5 can be fixed in the second chamber by a mounting assembly. The soft circuit board 2 is arranged in the first cavity, two ends of the soft circuit board 2 are respectively provided with a bonding pad 21, one end of the soft circuit board 2 is welded with the terminal button 1, and the other end of the soft circuit board is welded with the sensitive element 5; specifically, three bonding pads 21 distributed in a triangular shape are arranged at one end of the soft circuit board 2 connected with the terminal button 1, and three bonding pads 21 distributed on the same arc are arranged at one end of the soft circuit board 2 connected with the sensitive element 5; the soft circuit board 2 is welded with the terminal 1 and the sensitive element 5 through a welding pad 21. The soft circuit board 2 is provided with a grounding wire 22, and the grounding wire 22 is connected with the shell 6 and used for shielding the influence of the external complex electromagnetic environment on the output of the sensor. The grounding wire 22 of the flexible circuit board 2 is bent at a certain angle and then fixed between the terminal button 1 and the housing 6, and the grounding wire 22 is electrically connected with the housing 6.
Referring to fig. 2, a housing 6 is riveted and then matched with an end button 1, and a ground wire 22 is fixed on the inner side of the riveted part of the housing 6. Since the ground wire 22 is fixed inside the rivet-turned portion of the housing 6, the ground wire 22 and the housing 6 can be reliably connected, and the ground wire 22 is prevented from falling off.
Referring to fig. 2 and 3, in the pressure sensor structure provided in the embodiment of the present invention, two grounding wires 22 are provided, and the grounding wires 22 are distributed on two sides of the flexible circuit board 2. When one of the grounding wires 22 is disconnected from the grounding wire 22, the other grounding wire 22 is still connected with the shell 6, so that the normal work of the pressure sensor can be ensured.
Referring to fig. 2, the soft circuit board 2 is made of polyacyloantimonic argon amine, and the polyacyloantimonic argon amine has the advantages of good flexibility and high strength. The shell 6 is made of carbon structural steel, particularly 08AL high-quality carbon structural steel, the carbon structure has good stamping characteristics, and a good material foundation is provided for riveting and turning the shell 6. The surface of the shell 6 is plated with a white zinc layer, the mask is yellow, and the white zinc layer has an anti-corrosion effect.
Referring to fig. 2 and 3, in the sensor structure provided by the embodiment of the invention, one end of the soft circuit board 2 is welded with the terminal button 1, and the other end is welded with the input end and the output end of the sensitive element 5, so that a reliable power supply can be provided for the pressure sensor, and a pressure sensor signal can be output. After being bent at a certain angle, the grounding wire 22 of the soft circuit board 2 is fixed between the terminal button 1 and the shell 6, and the grounding wire 22 is not required to be connected by the metal press ring 3.
The pressure sensor structure provided by the embodiment of the invention at least has the following beneficial effects or advantages:
in the pressure sensor structure provided by the embodiment of the invention, one end of the terminal button is set as an open first cavity, and one end of the shell is set as an open second cavity; the terminal button is fixedly connected with the shell, and the first cavity and the second cavity are connected into a whole; the sensitive element is arranged in the second chamber; the soft circuit board is arranged in the first cavity; all parts in the pressure sensor are arranged neatly and are convenient to assemble. One end of the soft circuit board is welded with the end button, and the other end of the soft circuit board is welded with the input end and the output end of the sensitive element, so that a reliable power supply can be provided for the pressure sensor, signals of the pressure sensor are output, and the sensor is high in sensitivity and reliability. According to the pressure sensor structure provided by the invention, the grounding wire of the soft circuit board is fixed between the terminal button and the shell, and a metal press ring is not required to be adopted for connecting the grounding wire, so that the structure of the sensor is simplified, the assembly procedures are reduced, and the production efficiency is improved.
According to the pressure sensor structure provided by the embodiment of the invention, the shell is riveted and then matched with the terminal button, and the grounding wire is fixed on the inner side of the riveted part of the shell. Because the grounding wire is fixed on the inner side of the riveting turnover part of the shell, the grounding wire and the shell can be reliably connected.
In the pressure sensor structure provided by the embodiment of the invention, the two grounding wires are arranged, the grounding wires are distributed on the two sides of the soft circuit board, and when one grounding wire and the grounding wire fall off, the other grounding wire is still connected with the shell, so that the normal work of the pressure sensor can be ensured.
According to the pressure sensor structure provided by the embodiment of the invention, the soft circuit board is made of the polycyanoargon amine material, and the pressure sensor structure has the advantages of good flexibility and high strength.
According to the pressure sensor structure provided by the embodiment of the invention, the shell is made of carbon structural steel, so that the pressure sensor structure has good stamping property and provides a good material foundation for riveting and turning the shell. The surface of the shell is plated with a white zinc layer which has a certain protection effect.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (6)
1. A pressure sensor structure, comprising: terminal buttons, a shell, a sensitive element and a soft circuit board; one end of the terminal button is provided with an open first cavity, and one end of the shell is provided with an open second cavity; the terminal button is fixedly connected with the shell, and the first cavity and the second cavity are connected into a whole; the sensing element is arranged in the second cavity; the soft circuit board is arranged in the first cavity, one end of the soft circuit board is connected with the terminal button, and the other end of the soft circuit board is connected with the sensitive element; and the grounding wire of the soft circuit board is fixed between the terminal button and the shell.
2. The pressure sensor structure of claim 1, wherein the housing is riveted over to fit the terminal button, and the ground wire is fixed inside the riveted over part of the housing.
3. The pressure sensor structure of claim 2, wherein the ground lines are provided in two, and the ground lines are distributed on both sides of the flexible circuit board.
4. A pressure sensor structure according to any of claims 1-3, characterized in that the flexible circuit board is of polyacyanaamine material.
5. A pressure sensor structure according to any of claims 1-3, characterized in that the housing is of carbon structural steel.
6. The pressure sensor structure of claim 5, wherein the housing surface is plated with a white zinc layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911026282.1A CN110823441A (en) | 2019-10-25 | 2019-10-25 | Pressure sensor structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911026282.1A CN110823441A (en) | 2019-10-25 | 2019-10-25 | Pressure sensor structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110823441A true CN110823441A (en) | 2020-02-21 |
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ID=69550582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911026282.1A Pending CN110823441A (en) | 2019-10-25 | 2019-10-25 | Pressure sensor structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110823441A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114993518A (en) * | 2022-05-27 | 2022-09-02 | 东风电驱动系统有限公司 | Pressure sensor |
-
2019
- 2019-10-25 CN CN201911026282.1A patent/CN110823441A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114993518A (en) * | 2022-05-27 | 2022-09-02 | 东风电驱动系统有限公司 | Pressure sensor |
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