CN216081863U - Fuel pressure sensor for vehicle - Google Patents
Fuel pressure sensor for vehicle Download PDFInfo
- Publication number
- CN216081863U CN216081863U CN202122066603.XU CN202122066603U CN216081863U CN 216081863 U CN216081863 U CN 216081863U CN 202122066603 U CN202122066603 U CN 202122066603U CN 216081863 U CN216081863 U CN 216081863U
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- pressure sensor
- fuel pressure
- main shell
- pcba
- conduction band
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Abstract
The utility model discloses a vehicle fuel pressure sensor, comprising: a housing, the housing comprising: the main shell body is of a cover-shaped structure; the cover plate covers the main shell part, and an accommodating space is formed between the cover plate and the main shell part; the upper dispensing, the PCBA assembly and the lower dispensing are arranged in the accommodating space; wherein, PCBA assembly includes: ceramic substrate assembly and PCBA board. The ceramic substrate adopted by the utility model has excellent stability, and can keep no deformation under any extreme working condition, thereby not influencing the acquisition of the pressure-sensitive chip signal and ensuring the accuracy and stability of the output signal. The utility model achieves reliable sealing by using glue coating, has good elasticity after the glue is cured, can effectively tolerate the deviation in the assembling process, is convenient to install in the glue coating process and simple in structure, ensures connection by controlling the weight of the glue to be used as a control parameter in the process, and is reliable in sealing.
Description
Technical Field
The utility model relates to the technical field of automobile fuel system sealing, in particular to a vehicle fuel pressure sensor.
Background
With the increasing development of the automobile industry, people's requirements and use of automobiles are gradually irreplaceable, and the influence of automobile exhaust and fuel evaporation emission and leakage on the environment is more and more serious. In this regard, the national requirements for the emission standards of automobiles are also increasing, for example, the current national emission standards of six require that a fuel pressure sensor, which is a device for monitoring whether a leak exists, be provided in a fuel tank and an exhaust pipe.
The current installation position of a fuel pressure sensor is mainly integrated on an oil tank or an external pipeline or a carbon tank, and the working principle is that when the pressure in a monitoring system changes, the sensor collects a pressure signal and converts the pressure signal into a voltage model to be input to an ECU (electronic control Unit), and the ECU judges whether the whole system leaks;
the acquisition precision and stability of the fuel pressure sensor directly influence the output result, so that the fuel pressure sensor is required to ensure continuous, stable and accurate signal output under any working condition; the structure of the fuel pressure sensor in the current market is as follows: PCBA goes up integrated pressure sensitive chip and the chip of taking care of, PCBA only fixes in the casing and the casing passes through O type circle sealed, and this kind of structure mainly has following two problems:
the PCB material is an organic compound, a production line can be slightly deformed under the high-temperature/high-humidity condition, the deformation can cause the output precision of a pressure-sensitive chip integrated on the PCB to generate deviation, the result is distorted, and ECU misjudgment can be caused under the limit condition;
and 2, the PCBA and the shell are connected and sealed by using an O-shaped ring, the O-shaped ring is arranged between the PCBA and the shell, the O-shaped ring cannot be ensured to be positioned in a sealing groove after assembly, and once the O-shaped ring deviates, the fuel pressure sensor fails or the deviation of an output signal and the actual condition is caused.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention provides a fuel pressure sensor for a vehicle.
In order to achieve the purpose, the utility model adopts the technical scheme that:
a fuel pressure sensor for a vehicle, comprising:
a housing, the housing comprising: the main shell is of a cover-shaped structure, the lower interface is arranged below the main shell, the right interface is arranged on the right side of the main shell, and the right interface and the lower interface are respectively communicated with the main shell;
the cover plate covers the main shell part, and an accommodating space is formed between the cover plate and the main shell part;
the upper dispensing, the PCBA assembly and the lower dispensing are all arranged in the accommodating space, and the PCBA assembly is arranged between the upper dispensing and the lower dispensing;
wherein, the PCBA assembly includes: ceramic substrate assembly and PCBA board, PCBA board be equipped with a plurality of conduction band connectors, the ceramic substrate assembly includes: the PCBA board is arranged above the ceramic substrate assembly, and part of the conduction band is connected with the conduction band connector.
In the above vehicle fuel pressure sensor, four positioning columns are arranged inside the main housing portion, and extend upwards along four corners of the bottom of the main housing portion.
In the above vehicle fuel pressure sensor, the PCBA assembly is provided with four positioning holes, and each positioning hole is matched with one positioning column.
The above-mentioned vehicle fuel pressure sensor, wherein, still include: and the sealing ring is arranged on the lower connector.
In the above vehicle fuel pressure sensor, a part of the conduction band is connected to the pressure-sensitive chip and the conduction band connector, and another part of the conduction band is connected to the conditioning chip and the conduction band connector.
The above-mentioned vehicle fuel pressure sensor, wherein, still include: the glue groove part is arranged at the joint of the lower interface and the main shell part.
Foretell vehicle fuel pressure sensor, wherein, glue the slot part and adopt the colloid material, glue the slot part and encircle lower interface with main casing body portion junction a week sets up.
In the above vehicle fuel pressure sensor, the lower adhesive is disposed right above the adhesive portion.
In the above vehicle fuel pressure sensor, the lower dispensing is arranged to be close to the upper surface of the colloid part, and the lower dispensing is matched with the colloid part in size.
Due to the adoption of the technology, compared with the prior art, the utility model has the following positive effects:
(1) the ceramic substrate adopted by the utility model has excellent stability, and can keep no deformation under any extreme working condition, thereby not influencing the acquisition of the pressure-sensitive chip signal and ensuring the accuracy and stability of the output signal.
(2) The utility model uses glue to replace O-shaped ring sealing, the selected glue can effectively adhere the PCBA assembly and the shell together to achieve reliable sealing, and the glue has good elasticity after being cured, can effectively tolerate the deviation in the assembly process, is convenient to install and simple in structure in the glue coating process, ensures connection by controlling the weight of the glue as a control parameter in the process, and is reliable in sealing.
Drawings
Fig. 1 is an exploded view of the entirety of a fuel pressure sensor for a vehicle of the present invention.
Fig. 2 is a schematic view of a ceramic substrate assembly of the fuel pressure sensor for a vehicle of the present invention.
FIG. 3 is a schematic view of a PCBA assembly of the vehicle fuel pressure sensor of the present invention.
Fig. 4 is a schematic view of a housing of the fuel pressure sensor for a vehicle of the present invention.
Fig. 5 is a general schematic diagram of the fuel pressure sensor for a vehicle of the present invention.
In the drawings: 1. a cover plate; 2. dispensing; 3. a PCBA assembly; 4. dispensing; 5. a housing; 6. a seal ring; 7. a pressure sensitive chip; 8. a conditioning chip 9 and a ceramic substrate; 10. a conduction band; 11. PCBA board; 12. a ceramic substrate assembly; 13. positioning holes; 14. a positioning column; 15. glue the groove portion.
Detailed Description
The utility model is further described with reference to the following drawings and specific examples, which are not intended to be limiting. Fig. 1 is an exploded schematic view of the entirety of a vehicular fuel pressure sensor of the present invention; FIG. 2 is a schematic view of a ceramic substrate assembly of the vehicular fuel pressure sensor of the present invention; FIG. 3 is a schematic view of a PCBA assembly of the vehicle fuel pressure sensor of the present invention; FIG. 4 is a schematic view of the housing of the vehicular fuel pressure sensor of the present invention; fig. 5 is a general schematic diagram of the fuel pressure sensor for a vehicle of the present invention. Referring to fig. 1 to 5, there is shown a fuel pressure sensor for a vehicle of a preferred embodiment, including:
a housing 5, the housing 5 comprising: the main shell body 5 is in a cover-shaped structure, the lower interface is arranged below the main shell body 5, the right interface is arranged on the right side of the main shell body 5, and the right interface and the lower interface are respectively communicated with the main shell body;
the cover plate 1, the cover plate 1 covers the main shell, form a space between main shell and the cover plate 1;
the upper dispensing 2, the PCBA assembly 3 and the lower dispensing 4 are arranged in the accommodating space, and the PCBA assembly 3 is arranged between the upper dispensing 2 and the lower dispensing 4;
wherein, PCBA assembly 3 includes: ceramic substrate assembly 12 and PCBA board 11, PCBA board 11 be equipped with a plurality of conduction band 10 connectors, and ceramic substrate assembly 12 includes: the pressure-sensitive chip 7, take care of chip 8, ceramic substrate 9 and a plurality of conduction band 10, pressure-sensitive chip 7, take care of chip 8 and a plurality of conduction band 10 all locate on ceramic substrate 9, and PCBA board 11 locates the top of ceramic substrate assembly 12, and partial conduction band 10 is connected with conduction band 10 connector.
In a preferred embodiment, four positioning posts 14 are provided inside the main housing portion, and the four positioning posts 14 extend upward along four corners of the bottom of the main housing portion.
In a preferred embodiment, the PCBA assembly 3 defines four positioning holes 13, and each positioning hole 13 is associated with a positioning post 14.
In a preferred embodiment, the four locating posts 14 are hot riveted after assembly to ensure secure attachment of the PCBA assembly 3 within the housing 5
In a preferred embodiment, the method further comprises: and the sealing ring 6 is arranged on the lower connector.
In a preferred embodiment, part of the conduction band 10 is connected with the pressure-sensitive chip 7 and the conduction band 10 connection port, and part of the conduction band 10 is connected with the conditioning chip 8 and the conduction band 10 connection port.
In a preferred embodiment, the pressure-sensitive chip 7 and the conditioning chip 8 are fixed on the ceramic substrate 9 by an SMT process.
In a preferred embodiment, the ceramic substrate 9 and the PCBA board 11 are connected by reflow soldering.
The above are merely preferred embodiments of the present invention, and the embodiments and the protection scope of the present invention are not limited thereby.
The present invention also has the following embodiments in addition to the above:
in a further embodiment of the present invention, the method further comprises: glue groove portion 15, glue groove portion 15 and locate interface and main casing body portion junction down.
In a further embodiment of the present invention, the glue groove portion 15 is made of glue, and the glue groove portion 15 is disposed around a circumference of a connection between the lower connector and the main housing.
In a further embodiment of the present invention, the lower dispensing part 4 is disposed directly above the glue part.
In a further embodiment of the present invention, the lower dispensing glue 4 is disposed closely to the upper surface of the glue portion, and the size of the lower dispensing glue 4 is matched with that of the glue portion.
While the utility model has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the utility model.
Claims (9)
1. A fuel pressure sensor for a vehicle, comprising:
a housing, the housing comprising: the main shell is of a cover-shaped structure, the lower interface is arranged below the main shell, the right interface is arranged on the right side of the main shell, and the right interface and the lower interface are respectively communicated with the main shell;
the cover plate covers the main shell part, and an accommodating space is formed between the cover plate and the main shell part;
the upper dispensing, the PCBA assembly and the lower dispensing are all arranged in the accommodating space, and the PCBA assembly is arranged between the upper dispensing and the lower dispensing;
wherein, the PCBA assembly includes: ceramic substrate assembly and PCBA board, PCBA board be equipped with a plurality of conduction band connectors, the ceramic substrate assembly includes: the PCBA board is arranged above the ceramic substrate assembly, and part of the conduction band is connected with the conduction band connector.
2. The vehicle fuel pressure sensor according to claim 1, wherein four positioning posts are provided inside the main housing portion, the four positioning posts extending upward along four corners of a bottom of the main housing portion.
3. The vehicle fuel pressure sensor of claim 2, wherein four locating holes are formed in the PCBA assembly, each locating hole being associated with one of the locating posts.
4. The fuel pressure sensor for a vehicle according to claim 1, further comprising: and the sealing ring is arranged on the lower connector.
5. The vehicle fuel pressure sensor according to claim 1, wherein a part of the conduction band connects the pressure-sensitive chip and the conduction band connection port, and a part of the conduction band connects the conditioning chip and the conduction band connection port.
6. The fuel pressure sensor for a vehicle according to claim 1, further comprising: the glue groove part is arranged at the joint of the lower interface and the main shell part.
7. The vehicle fuel pressure sensor according to claim 6, wherein the rubber groove is made of a rubber material, and the rubber groove is disposed around a periphery of a connection between the lower port and the main housing.
8. The vehicle fuel pressure sensor according to claim 7, wherein the lower adhesive is provided directly above the adhesive groove portion.
9. The vehicle fuel pressure sensor according to claim 8, wherein the lower dispensing is disposed in close contact with an upper surface of the glue groove portion, and the lower dispensing is matched with the glue groove portion in size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122066603.XU CN216081863U (en) | 2021-08-30 | 2021-08-30 | Fuel pressure sensor for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122066603.XU CN216081863U (en) | 2021-08-30 | 2021-08-30 | Fuel pressure sensor for vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216081863U true CN216081863U (en) | 2022-03-18 |
Family
ID=80673320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122066603.XU Active CN216081863U (en) | 2021-08-30 | 2021-08-30 | Fuel pressure sensor for vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216081863U (en) |
-
2021
- 2021-08-30 CN CN202122066603.XU patent/CN216081863U/en active Active
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