Pressure sensor assembling structure and method
A pressure sensor and assembly structure technology, which is applied in the direction of workpiece clamping devices, hand-held tools, manufacturing tools, etc., can solve problems such as damage to electronic component connection lines, poor reliability of pressure sensors, and shortened service life. Effect of improving reliability and service life
Pending Publication Date: 2021-03-30
LONGWAY TECH WUXI
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Problems solved by technology
[0005] In view of the deficiencies in the background technology, the present invention provides an assembly structure and method of a pressure sensor. The technical problem to be solved is that the existing pressure sensor welds pressure detection sensor chips and electronic components on the same circuit board. When this structure is applied to automobiles, the pollutants and acidic solutions generated by the operation of the automobile will diffuse from the pressure sensing detection chip to the electronic components, destroying the electronic components and the connection lines between the electronic components, making the reliability of the pressure sensor worse. Poor and shortened service life
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[0026] The present invention is described in further detail now in conjunction with accompanying drawing. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.
[0027] Such as Figure 1-3 As shown, an assembly structure of a pressure sensor includes a ceramic substrate 1, a circuit board 3 and a pressure detection sensor chip 2. A groove 12 is opened on the top of the ceramic substrate 1, and the pressure detection sensor chip 2 is fixed at the bottom of the groove 12. The bottom of the groove 12 is provided with an air inlet 10 in the fixed area of the pressure detection sensor chip 2, and the air inlet 10 communicates with the outside world, and the circuit board 3 is provided with a positioning hole 30, and the circuit board 3 is fixed on the bottom of the groove 12. The detection sensor chip 2 is in the positio...
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The invention relates to the technical field of pressure sensor assembling, and discloses a pressure sensor assembling structure and method. The pressure sensor assembling structure comprises a ceramic substrate, a circuit board and a pressure detection sensing chip, wherein the top of the ceramic substrate is provided with a groove; the pressure detection sensing chip is fixed at the bottom of the groove; the bottom of the groove is provided with an air inlet hole in a fixing area of the pressure detection sensing chip; the air inlet hole is communicated with the outside; the circuit board isprovided with a positioning hole and is fixed at the bottom of the groove; the pressure detection sensing chip is arranged in the positioning hole; and an electronic element of the pressure sensor and the pressure detection sensing chip are installed separately in actual use, an adhesive layer is arranged in the positioning hole, and a sealing cover is arranged at the periphery of the adhesive layer, so that the isolated installation of the pressure detection sensing chip and the electronic element is realized, pollutants or an acid solution can be prevented from being diffused to the electronic element from the pressure detection sensing chip, the normal work of the electronic element on the circuit board is further ensured, and the reliability and the service life of the pressure sensorare improved.
Description
technical field [0001] The invention relates to the technical field of pressure sensor assembly, in particular to a pressure sensor assembly structure and method. Background technique [0002] In the automotive industry, pressure sensors are an important part of vehicles. For example, in the engine, pressure sensors monitor the oil and coolant pressure, and the on-board controller adjusts the power that the engine should provide according to the detection information of the pressure sensor, so as to achieve the appropriate speed when the accelerator is pressed or the brakes are applied to the car. Also in the airbag system of a car, when a pressure sensor detects that a vehicle is subjected to high pressure, the airbag is activated to ensure the safety of passengers. Therefore, the reliable use of the pressure sensor is very important to the driving safety of the car. [0003] However, most of the existing pressure sensors directly install the pressure detection sensor chi...
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IPC IPC(8): B25B11/02B25B27/14
CPCB25B11/02B25B27/14
Inventor 汪祖民
Owner LONGWAY TECH WUXI