CN205373941U - Pneumatic brake pressure sensor - Google Patents
Pneumatic brake pressure sensor Download PDFInfo
- Publication number
- CN205373941U CN205373941U CN201521077206.0U CN201521077206U CN205373941U CN 205373941 U CN205373941 U CN 205373941U CN 201521077206 U CN201521077206 U CN 201521077206U CN 205373941 U CN205373941 U CN 205373941U
- Authority
- CN
- China
- Prior art keywords
- circuit board
- brake pressure
- pressure transducer
- aerodynamic brake
- base
- Prior art date
- 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.)
- Expired - Fee Related
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- Measuring Fluid Pressure (AREA)
Abstract
The utility model relates to a pneumatic brake pressure sensor, including electrical apparatus joint, first circuit board, second Circuit Board, pressure chip and base, this base has a cascaded chamber that holds, and this electrical apparatus joint is connected with this base should hold the chamber in order to seal. This first circuit board is for printed circuit board and on locating this ladder that holds the chamber, and the bottom surface of this first circuit board is located to this pressure chip, and this second Circuit Board is printed circuit board and locates the bottom surface that this electrical apparatus connects, and the connecting terminal that this electrical apparatus connects this second Circuit Board, and this pneumatic brake pressure sensor still includes the tertiary circuit board of connecting this first circuit board and this second Circuit Board, and this tertiary circuit board is the softness circuit board. The utility model discloses a pneumatic brake pressure sensor can reduce the technology complexity and the cost of circuit board.
Description
Technical field
This utility model relates to a kind of Vehicular pressure sensor, is specially a kind of aerodynamic brake pressure transducer for brakes.
Background technology
Aerodynamic brake pressure transducer is the one on automobile in tens kinds of sensors, is used for the pressure detecting in the air accumulator of the brakes of such as automobile carrier.Aerodynamic brake pressure transducer according to the electronic control unit (ECU) that the continuous pressure signal of different for reflection magnitudes of voltage is sent into automobile, can control the duty of truck compressor for ECU.When pressure is less than normal, ECU will indicate that compressor operation inputs gases at high pressure to air accumulator；After pressure inside the tank value exceedes regulation atmospheric pressure value, ECU will indicate that air compressor machine off-load is dallied, and to reduce the power consumption of electromotor, extends the air compressor machine life-span.
The structure of the aerodynamic brake pressure transducer 10 on current truck is as it is shown in figure 1, include: electrical connector 11, flexible circuit board 12 (FPC), printed circuit board (PCB) (PCB) 13, inner seal ring 14, pressure chip 15, exterior seal ring 16 and base 17.Pressure chip 15 is welded on PCB13 by surface mount (SMT) technique, and FPC12 two ends are welded on electrical connector 11 and PCB13.Placing inner seal ring 14 between base 17 and PCB13, by special contracting equipment by base 17 edge flange, thus being fixed by electrical connector 11, applying a force to PCB13, it is achieved the seal request between PCB13 and base simultaneously.Exterior seal ring 16 is arranged on base 17, and pressure transducer product relies on exterior seal ring 16 to realize the seal request of both junctions after being installed on truck engine.When pressure transducer works, pressure passes to pressure chip 15 by the air inlet on base 17, and pressure chip 15 gathers force value, converts thereof into voltage signal, and voltage signal processed and is converted into analog voltage signal, it is input in the ECU of electromotor by electrical connector 11.
As it was previously stated, electronic devices and components are attached on FPC12 each through SMT technique, the more difficult realization of this technique, equipment investment expense is tall and big, and additionally the cost of FPC itself is also high.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of aerodynamic brake pressure transducer, to reduce process complexity and the cost of circuit board.
This utility model employed technical scheme comprise that a kind of aerodynamic brake pressure transducer of proposition for solving above-mentioned technical problem, including electrical connector, first circuit board, second circuit board, pressure chip and base, this base has a staged and holds chamber, this electrical connector is connected with this base to close this accommodation chamber, it is characterized in that, this first circuit board is printed circuit board (PCB) and is located on a ladder in this accommodation chamber, this pressure chip is located at the bottom surface of this first circuit board, this second circuit board is printed circuit board (PCB) and the bottom surface being located at this electrical connector, the connection terminal of this electrical connector connects this second circuit board, this aerodynamic brake pressure transducer also includes the tertiary circuit plate connecting this first circuit board and this second circuit board, this tertiary circuit plate is flexible circuit board.
In an embodiment of the present utility model, aerodynamic brake pressure transducer also includes inner seal ring, is located on the circle groove between this ladder and this first circuit board.
In an embodiment of the present utility model, aerodynamic brake pressure transducer also includes exterior seal ring, is located on a circle groove of this base outer perimeter.
In an embodiment of the present utility model, this flexible circuit board only has connection line.
In an embodiment of the present utility model, this aerodynamic brake pressure transducer also includes clamp ring, and this clamp ring threadeds to fix this first circuit board with the stepped sidewalls in this accommodation chamber.
In an embodiment of the present utility model, this pressure chip is MEMS piezoresistive pressure chip.
This utility model uses the combination of two printed circuit board (PCB)s and a flexible circuit board so that electronic devices and components can be attached on one of them printed panel without being attached on flexible circuit board, and processing thus can be made simple, and cost reduces.
Accompanying drawing explanation
For above-mentioned purpose of the present utility model, feature and advantage can be become apparent, below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is elaborated, wherein:
Fig. 1 is the sectional view of existing aerodynamic brake pressure transducer.
Fig. 2 is the sectional view of the aerodynamic brake pressure transducer of this utility model one embodiment.
Detailed description of the invention
Fig. 2 is the sectional view of the aerodynamic brake pressure transducer of this utility model one embodiment.With reference to shown in Fig. 2, the aerodynamic brake pressure transducer 20 of the present embodiment includes electrical connector 21, first circuit board 22, second circuit board 23, tertiary circuit plate 24, pressure chip 25 and base 26.Base 26 has a staged and holds chamber 60, and this holds chamber and has bottom surface 61, ladder 62 and the stepped sidewalls between bottom surface 61 and ladder 62 63.Bottom surface 61 connects the lower surface of base 26 by air inlet 64.Electrical connector 21 is connected with base 26 to close accommodation chamber 60.First circuit board 22 is printed circuit board (PCB) (PCB) and is located on the ladder 62 holding chamber 60, and pressure chip 25 is then located at the bottom surface of first circuit board 22.Second circuit board 23 is also for PCB and the bottom surface being located at electrical connector 21.The connection terminal of electrical connector 21 connects second circuit board 23.Tertiary circuit plate 24 is flexible circuit board, and it connects first circuit board 22 and second circuit board 23.
In the present embodiment, first circuit board 22 and second circuit board 23 are PCB, and wherein the function of first circuit board 22 can be chip PCB, and the function of second circuit board 23 can be calibration PCB.All of electronic devices and components all can be attached on second circuit board 23.Electronic devices and components attach to SMT mature technology on PCB at present, and equipment is commonly used, and does not need buy or develop special equipment, can reduce manufacture equipment cost.
Accordingly, tertiary circuit plate 24 plays circuit interconnection function, it does not need attach any components and parts.It is to say, tertiary circuit plate 24 only has connection line, its two ends are respectively welded first circuit board 22 and second circuit board 23.
Shown in Fig. 2, aerodynamic brake pressure transducer 20 may also include inner seal ring 27, and it is located on the circle groove 65 between ladder 62 and first circuit board 22.Inner seal ring 27 can meet product Inlet Position cavity seal request.
Aerodynamic brake pressure transducer 20 may also include exterior seal ring 28, is located on a circle groove 66 of base 26 periphery.Aerodynamic brake pressure transducer 20 relies on exterior seal ring 28 to realize the seal request of both junctions after being installed on truck engine.
In the preferred embodiment, aerodynamic brake pressure transducer 20 also includes clamp ring 29.Clamp ring 29 is threadeded with the stepped sidewalls 63 holding chamber with fixing first circuit board 22.Clamp ring 29 is threaded metalwork, is coated with screw thread glue, installs fixation reliable during installation.After the present embodiment uses clamp ring 29 to fix first circuit board 22, the flange of base 26 and electrical connector 21 connects can adopt common speed lathe, does not need additional investment to buy special closing-in equipment.By contrast, the closing in of existing aerodynamic brake pressure transducer needs custom-made equipment, should control pressure stroke and can rotate convenient operation again, and equipment investment is costly.
In one embodiment, pressure chip 25 is MEMS piezoresistive pressure chip.Pressure chip 25 is positioned over based on, in the absolute pressure encapsulating structure of substrate, being attached to the bottom surface of first circuit board by SMT technique.
When the aerodynamic brake pressure transducer 20 of the present embodiment works, pressure sends pressure chip 25 to by the air inlet 64 of base 26, pressure chip 25 gathers tested force value, convert thereof into voltage signal, export to the signal processor on second circuit board 23 by tertiary circuit plate 24, voltage signal is amplified, adjusts by signal processor, analog digital conversion, digital operation, temperature-compensating and digital-to-analogue conversion, through being supplied to the ECU of electromotor by electrical connector 21 after converting analog voltage signal to.
Although this utility model discloses as above with preferred embodiment; so it is not limited to this utility model; any those skilled in the art; without departing from spirit and scope of the present utility model; when doing a little amendment and perfect, therefore protection domain of the present utility model is when with being as the criterion that claims define.
Claims (6)
1. an aerodynamic brake pressure transducer, including electrical connector, first circuit board, second circuit board, pressure chip and base, this base has a staged and holds chamber, this electrical connector is connected with this base to close this accommodation chamber, it is characterized in that, this first circuit board is printed circuit board (PCB) and is located on a ladder in this accommodation chamber, this pressure chip is located at the bottom surface of this first circuit board, this second circuit board is printed circuit board (PCB) and the bottom surface being located at this electrical connector, the connection terminal of this electrical connector connects this second circuit board, this aerodynamic brake pressure transducer also includes the tertiary circuit plate connecting this first circuit board and this second circuit board, this tertiary circuit plate is flexible circuit board.
2. aerodynamic brake pressure transducer as claimed in claim 1, it is characterised in that also include inner seal ring, is located on the circle groove between this ladder and this first circuit board.
3. aerodynamic brake pressure transducer as claimed in claim 1, it is characterised in that also include exterior seal ring, is located on a circle groove of this base outer perimeter.
4. aerodynamic brake pressure transducer as claimed in claim 1, it is characterised in that this flexible circuit board only has connection line.
5. aerodynamic brake pressure transducer as claimed in claim 1, it is characterised in that this aerodynamic brake pressure transducer also includes clamp ring, and this clamp ring threadeds to fix this first circuit board with the stepped sidewalls in this accommodation chamber.
6. aerodynamic brake pressure transducer as claimed in claim 1, it is characterised in that this pressure chip is MEMS piezoresistive pressure chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521077206.0U CN205373941U (en) | 2015-12-21 | 2015-12-21 | Pneumatic brake pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521077206.0U CN205373941U (en) | 2015-12-21 | 2015-12-21 | Pneumatic brake pressure sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205373941U true CN205373941U (en) | 2016-07-06 |
Family
ID=56258719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521077206.0U Expired - Fee Related CN205373941U (en) | 2015-12-21 | 2015-12-21 | Pneumatic brake pressure sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205373941U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106197824A (en) * | 2016-08-26 | 2016-12-07 | 华景传感科技（无锡）有限公司 | Pressure transducer and the automobile being suitable for |
-
2015
- 2015-12-21 CN CN201521077206.0U patent/CN205373941U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106197824A (en) * | 2016-08-26 | 2016-12-07 | 华景传感科技（无锡）有限公司 | Pressure transducer and the automobile being suitable for |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160706 Termination date: 20201221 |