CN214373098U

CN214373098U - GPF pressure sensor device for vehicle

Info

Publication number: CN214373098U
Application number: CN202120524696.3U
Authority: CN
Inventors: 李开明; 张琳; 段红军; 陆姗姗
Original assignee: Shanghai Wenxiang Automotive Sensors Co Ltd
Current assignee: Shanghai Wenxiang Automotive Sensors Co Ltd
Priority date: 2021-03-12
Filing date: 2021-03-12
Publication date: 2021-10-08
Anticipated expiration: 2031-03-12

Abstract

The utility model relates to a GPF pressure sensor device for a vehicle, which comprises a PCB board, a signal processing chip and a plurality of bearing boards; the signal processing chip is fixed on the upper surface of the PCB, the PCB is provided with sensor mounting holes which are the same in number as the bearing plates and are independent of each other, the bearing plates are arranged on the lower surface of the PCB and form sensor cavities which are independent of each other with the sensor mounting holes, each bearing plate is provided with a pressure sensor chip, and the pressure sensor chips are located in the sensor cavities; the pressure sensor chip is used for converting the detected pressure signal into an electric signal and transmitting the electric signal to the bearing plate, and the bearing plate transmits the electric signal to the signal processing chip through the PCB. A plurality of bearing plates are arranged to replace one bearing plate, so that the problem that one pressure sensor chip is damaged to cause the integral scrapping of the other pressure sensor chip and the bearing plate is solved.

Description

GPF pressure sensor device for vehicle

Technical Field

The utility model relates to an automobile-used pressure sensor technical field especially relates to an automobile-used GPF pressure sensor device.

Background

The existing domestic sensor needs to measure the pressure of tail gas, simultaneously measures two paths of tail gas, and needs small volume and corrosion resistance. The sensor is mainly used for measuring the absolute pressure value or the differential pressure value of tail gas in a pipeline, is placed at an air inlet port and an air outlet port of a GPF system, and can measure the absolute pressure value of the air inlet port and the air outlet port and the differential pressure of the two ports. The realization principle is as follows: when a measured medium (gas or liquid) is in contact with the pressure sensor chip, the pressure of the measured medium is transmitted to the pressure sensor chip, the pressure sensor chip converts the pressure into an electric signal to be output, and the electric signal is processed by the circuit and the chip to output a signal meeting the requirements of customers.

Problems in the prior art include problem one: the two pressure sensor chips are bound on the ceramic plate, if one pressure sensor chip is damaged, the whole ceramic plate and the two sensor chips are scrapped, so that the production cost is increased, and the production efficiency is reduced; the second problem is that: because the ceramic plate and the bracket are bonded through glue, the measurement of two paths of air pressure is realized through the bracket partition, and if the glue between the ceramic plate and the partition is not full or leaks, the communication of the two paths of air pressure is lost and the function of simultaneously measuring the two paths of air pressure is lost.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that an automobile-used GPF pressure sensor device is provided, replace a loading board through set up a plurality of independent loading boards of each other in the support frame, avoid a pressure sensor chip to damage and lead to the whole condemned problem of another pressure sensor chip and loading board.

The utility model provides a technical scheme that its technical problem adopted is: the GPF pressure sensor device for the vehicle comprises a PCB, a signal processing chip and a plurality of bearing plates; the signal processing chip is fixed on the upper surface of the PCB, the PCB is provided with sensor mounting holes which are the same in number as the bearing plates and are mutually independent, the bearing plates are arranged on the lower surface of the PCB and form mutually independent sensor cavities with the sensor mounting holes on the PCB, each bearing plate is provided with a pressure sensor chip, and the pressure sensor chips are positioned in the sensor cavities; the pressure sensor chip is used for converting the detected pressure signal into an electric signal and transmitting the electric signal to the bearing plate, and the bearing plate transmits the electric signal to the signal processing chip through the PCB.

The PCB supporting frame comprises a PCB and is characterized by further comprising a support frame, wherein the support frame is used for enabling the bearing plate to be fixed on the lower surface of the PCB.

The support frame is provided with mounting frames which are the same as the bearing plates in number and are independent of each other, and each bearing plate is mounted in the corresponding mounting frame.

The bearing plate is characterized by further comprising a shell, and an independent bearing cavity is formed in the shell below each bearing plate.

The pressure sensor chip is electrically connected with the bearing plate through the first lead.

The first lead is a gold lead.

The PCB is electrically connected with the bearing plate through the second lead.

The second lead is an aluminum lead.

The bearing plate is made of a ceramic material.

The bearing plate is a bearing plate with a regular shape.

Advantageous effects

Since the technical scheme is used, compared with the prior art, the utility model, have following advantage and positive effect: the utility model adopts a plurality of loading plates to replace a whole loading plate, thereby avoiding the problem that one pressure sensor chip can not be used because the other pressure sensor chip is damaged; the utility model can effectively block the communication of multi-path air pressure by arranging a plurality of independent bearing cavities, and avoid the problem that the multi-path air pressure communication is caused by incomplete viscose or air leakage between the traditional bearing plate and the bracket partition, and further the multi-path air pressure is not measured simultaneously; the utility model provides a support frame has the fixed action to the loading board, can prevent effectively that the loading board from damaging the pressure sensor chip owing to remove, and then reduction in production cost improves production efficiency.

Drawings

Fig. 1 is a schematic cross-sectional view of an overall GPF pressure sensor device for a vehicle according to an embodiment of the present invention;

fig. 2 is an external view schematic diagram of a GPF pressure sensor device for a vehicle according to an embodiment of the present invention;

fig. 3 is a schematic cross-sectional view of the internal structure of a GPF pressure sensor device according to an embodiment of the present invention;

fig. 4 is a schematic diagram of the internal parts disassembly of the GPF pressure sensor device according to the embodiment of the present invention.

The figure is as follows: 1. PCB board, 2, signal processing chip, 3, sensor cavity, 4, pressure sensor chip, 5 first lead wire, 6, second lead wire, 7, loading board, 8, support frame, 9, shell, P1, first bearing chamber, P2, second bearing chamber.

Detailed Description

The present invention will be further described with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes and modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and these equivalents also fall within the scope of the appended claims.

The embodiment of the utility model relates to a GPF pressure sensor device for vehicle, as shown in figure 1, figure 2 and figure 4, including PCB board 1, signal processing chip 2, sensor cavity 3, pressure sensor chip 4, first lead 5, second lead 6, loading board 7, support frame 8 and shell 9; the signal processing chip 2 is fixed on the upper surface of the PCB 1, the PCB 1 is provided with sensor mounting holes which are the same in number as the bearing plates 7 and are independent of each other, the bearing plates 7 are arranged on the lower surface of the PCB 1 and form sensor cavities 3 which are independent of each other with each sensor mounting hole on the PCB 1, each bearing plate 7 is provided with a pressure sensor chip 4, and the pressure sensor chips 4 are positioned in the sensor cavities 3; the pressure sensor chip 4 is used for converting the detected pressure signal into an electric signal and transmitting the electric signal to the bearing plate 7, the bearing plate 7 transmits the electric signal to the signal processing chip 2 through the PCB 1, and the signal processing chip 2 sends the received electric signal to the client.

Further, the support frame 8 is used for fixing the bearing plates 7 on the lower surface of the PCB 1, the support frame 8 is provided with mounting frames which are the same in number as the bearing plates 7 and are independent of each other, and each bearing plate 7 is mounted in a corresponding mounting frame.

Further, the conventional GPF pressure sensor device for the vehicle is generally provided with only one carrier plate 7, and all the pressure sensor chips 4 are bound to the same carrier plate 7, so that the two carrier plates 7 are adopted in the embodiment, and the design mode can effectively avoid the situation that one pressure sensor chip 4 is damaged to cause that the other pressure sensor chip 4 cannot be used. The bearing plates 7 are made of ceramic materials and are bearing plates in regular shapes, the bearing plates 7 in the embodiment are square ceramic bearing plates, the two bearing plates 7 are respectively embedded in the support frame 8, each bearing plate 7 can be separated through the support frame 8, and the support frame 8 is installed on the PCB 1; the support frame 8 can fix the lower surfaces of the bearing plate 7 and the PCB 1, and in the assembling process, the support frame 8 has a fixing effect on the bearing plate 7, so that the bearing plate 7 can be prevented from damaging the pressure sensor chip 4 due to movement, the assembling efficiency is improved, the product quality risk is reduced, the production difficulty in the production process is reduced, and the automatic production and the efficiency are improved.

Further, the bearing chamber has been seted up to shell 9 bottom every loading board 7, and the bearing chamber in this embodiment includes first bearing chamber P1 and second bearing chamber P2 (see fig. 1), first bearing chamber P1 and second bearing chamber P2 are independent bearing chambers, can effectively avoid the UNICOM between the bearing chamber, and then avoid two way atmospheric pressure to scurry with.

As shown in fig. 1, 3 and 4, the pressure sensor chip 4 is electrically connected to the carrier plate 7 through a first lead 5, and the first lead 5 is a gold lead; the PCB board 1 is electrically connected with a bearing plate 7 through a second lead 6, and the second lead 6 is an aluminum lead.

Therefore, the utility model adopts a plurality of loading plates to replace a whole loading plate, thereby avoiding the problem that one pressure sensor chip can not be used because the other pressure sensor chip is damaged; the utility model discloses a set up channeling of a plurality of independent bearing chambeies can effectively block multichannel atmospheric pressure, avoid traditional loading board and support to cut off the viscose between not full or have to leak empty and lead to multichannel atmospheric pressure UNICOM, and then lose the problem of two tunnel atmospheric pressures of simultaneous measurement.

Claims

1. A GPF pressure sensor device for a vehicle is characterized by comprising a PCB (printed circuit board) (1), a signal processing chip (2) and a plurality of bearing plates (7); the signal processing chip (2) is fixed on the upper surface of the PCB (1), the PCB (1) is provided with sensor mounting holes which are the same in number as the bearing plates (7) and are independent of each other, the bearing plates (7) are mounted on the lower surface of the PCB (1) and form sensor cavities (3) which are independent of each other with each sensor mounting hole on the PCB (1), each bearing plate (7) is provided with a pressure sensor chip (4), and the pressure sensor chips (4) are located in the sensor cavities (3); the pressure sensor chip (4) is used for converting the detected pressure signal into an electric signal and transmitting the electric signal to the bearing plate (7), and the bearing plate (7) transmits the electric signal to the signal processing chip (2) through the PCB (1).

2. The GPF pressure sensor apparatus for vehicle of claim 1, further comprising a bracket frame (8), wherein the bracket frame (8) is used for fixing the carrier plate (7) on the lower surface of the PCB (1).

3. The GPF pressure sensor device for the vehicle of claim 2, wherein the support frame (8) is provided with mounting frames which are the same in number as the carrier plates (7) and are independent of each other, and each carrier plate (7) is mounted in the corresponding mounting frame.

4. The GPF pressure sensor apparatus for vehicle of claim 1, further comprising a housing (9), wherein the housing (9) opens an independent pressure bearing cavity below each bearing plate (7).

5. The GPF pressure sensor arrangement for a vehicle of claim 1, wherein the pressure sensor chip (4) is electrically connected to a carrier plate (7) via a first lead (5).

6. The GPF pressure sensor apparatus of claim 5, wherein the first lead (5) is a gold lead.

7. The GPF pressure sensor apparatus for vehicle of claim 1, wherein the PCB board (1) is electrically connected with a carrier board (7) through a second lead (6).

8. The GPF pressure sensor apparatus of claim 7, wherein the second lead (6) is an aluminum lead.

9. The GPF pressure sensor arrangement for vehicles according to claim 1, wherein the carrier plate (7) is made of a ceramic material.

10. The GPF pressure sensor arrangement for vehicles of claim 1, wherein the carrier plate (7) is a regularly shaped carrier plate.