Air pressure sensor

An air pressure and sensor technology, applied in the direction of measuring fluid pressure, instruments, measuring devices, etc., can solve the problems of overall length and weight, and achieve the effect of strong conductivity, light weight and good sealing performance

Pending Publication Date: 2018-02-27
DONGFENG AUTOMOBILE ELECTRONICS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an air pressure sensor with compact structure, light weight, long service life and high working reliability in order to solve the defects of the existing air pressure sensor which are too long in total length and heavy in weight.

Method used

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Embodiment Construction

[0013] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0014] Such as Figure 1-2 As shown, an air pressure sensor includes a metal shell 1, an O-ring 2, a ceramic sensitive element assembly 3, a circlip 4 for a hole, and an end button assembly 6. The metal shell 1 has A card slot, the ceramic sensitive element assembly 3 is snapped into the card slot inside the metal shell 1 by the circlip 4 for the hole, and the end button assembly 6 is arranged in the sealed card slot at the end of the metal shell 1 and Cooper...

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Abstract

The invention provides an air pressure sensor. A clamping groove is formed in a metal shell, a ceramic sensitive element assembly is clamped into the clamping groove in the metal shell through a holeelastic check ring, and an end button assembly is arranged at the end of the metal shell, seals the clamping groove and is arranged on and matched with the ceramic sensitive element assembly; the ceramic sensitive element assembly and the bottom surface of the clamping groove in the metal shell are sealed through an O-shaped sealing ring, an air inlet is formed in the bottom of the metal shell, the air inlet is communicated with a sealed cavity which is defined by the ceramic sensitive element assembly and the clamping groove in the metal shell. According to the air pressure sensor, the hole elastic check ring is used for pressing the ceramic sensitive element assembly so that the O-shaped sealing ring can be deformed, and the sealed cavity is formed; the ceramic sensitive element assemblyand the end button assembly are electrically connected by adopting a flexible circuit board. The air pressure sensor has the advantages of compact structure, low weight, small output error, long service life of products, and high working reliability, and is mainly applied to sensors which automatically detect the braking pressure of an air storage tank of a commercial vehicle.

Description

technical field [0001] The invention relates to an air pressure sensor. Background technique [0002] At present, the air pressure sensors used in commercial vehicles mainly use a sealing method in which a metal pressure ring presses a ceramic sensitive element to compress the sealing ring. This type of structure adopts the pressure ring sealing method, so when the ceramic sensitive element is pressed, the ceramic is easily broken, and the sensor is invalid. Moreover, this type of sensor is heavy and the total length is too long. Contents of the invention [0003] The purpose of the present invention is to provide an air pressure sensor with compact structure, light weight, long service life and high working reliability in order to solve the defects of the existing air pressure sensor which are too long in total length and heavy in weight. . [0004] Technical scheme of the present invention is realized like this: [0005] An air pressure sensor, comprising a metal shel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L19/00
CPCG01L19/00
Inventor 周斌
Owner DONGFENG AUTOMOBILE ELECTRONICS
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