Pressure sensor assembly

Abstract

The utility model relates to a pressure sensor assembly, which solves the problems that the existing pressure sensor assembly is deformed and misplaced due to high-temperature brazing, and the proportion of unqualified products is high. Comprising a pressure chamber part, a pressure deformation element, a deformation supporting element and a signal element shell, a positioning containing hole is formed in the signal element shell, and the deformation supporting element, the pressure deformation element and the pressure chamber part are sequentially stacked upwards in the positioning containing hole from the bottom end of the positioning containing hole, so that positioning control is improved; the assembly concentricity of a pressure chamber part, a pressure deformation element, a deformation supporting element and a signal element shell is controlled within a required range, so that the assembly before brazing becomes very simple, the concentricity of other deformation elements before assembly and welding can be easily controlled, the precision of a brazing tool is reduced, and the production efficiency is improved. And the percent of pass of products is increased, the updating frequency of the tool is reduced, the loss of tool materials is reduced to a great extent, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the field of electronic devices, in particular to a pressure sensor component. Background Art

[0002] The pressure sensor assembly is usually composed of a pressure chamber part, a pressure deformation element, a deformation sensitive element, a deformation support element and a signal element housing. When the pressure chamber part is filled with high-pressure fluid, its right side surface will bulge due to pressure, thereby pushing the deformation of the pressure deformation element, thereby causing a corresponding change in the signal output of the deformation sensitive element, achieving a continuous change in pressure and a corresponding change in the corresponding continuous signal output. When the pressure chamber part, the pressure deformation element, the deformation sensitive element, the deformation support element and the signal element housing parts are misaligned, the output continuous signal will be incorrect, leading to serious consequences. For this type of sensor, the traditional method is to stack several deformation elements together before brazing, and place them in a special tooling 8 for positioning brazing. This special tooling requires high precision. Each time it passes through high temperature, the loss and deformation are large, resulting in the pressure chamber part, the pressure deformation element, the deformation sensitive element, the deformation support element and the signal element housing parts are not concentric, thereby causing the output continuous signal to be incorrect, resulting in a high proportion of defective products. In order to avoid this phenomenon, it is necessary to replace the tooling regularly, so the tooling has a high cost of use. Utility Model Content

[0003] The utility model aims to solve the problem that the existing pressure sensor components are deformed and dislocated after high-temperature brazing, and the proportion of defective products is relatively high.

[0004] The technical solution adopted to solve the technical problem raised by the utility model is as follows: the pressure sensor component of the utility model includes a pressure chamber part, a pressure deformation element, a deformation support element and a signal element housing, the pressure chamber part, the pressure deformation element, the deformation support element and the signal element housing are stacked in sequence, a positioning accommodating hole is provided on the signal element housing, and the deformation support element, the pressure deformation element and the pressure chamber part are stacked in sequence from the bottom end of the positioning accommodating hole to the top and placed in the positioning accommodating hole.

[0005] The technical solutions further defining the utility model include:

[0006] The positioning accommodating hole is a stepped hole, and the deformable supporting element is located on the step of the stepped hole.

[0007] The pressure sensor assembly also includes a deformation sensitive element, on which a connecting wire is provided, and the deformation sensitive element is arranged in close contact with the pressure deformation element; the deformation support element and the signal element housing are provided with through holes for exposing the connecting wire; a supporting strip is provided in the middle of the pressure deformation element, and the deformation sensitive element is arranged in close contact with the supporting strip.

[0008] The projection contours of the pressure chamber parts, the pressure deformation element, the deformation support element and the signal element housing along the height direction are all circular.

[0009] The deformation support element is a steel sheet.

[0010] Through the above technical scheme, the beneficial effects of the utility model are as follows: the pressure chamber parts, pressure deformation elements, deformation support elements and signal element housings of the pressure sensor assembly of the utility model are stacked in sequence, a positioning accommodating hole is provided on the signal element housing, and the deformation support element, pressure deformation element and pressure chamber parts are stacked in sequence from the bottom end of the positioning accommodating hole to the top in the positioning accommodating hole, thereby increasing the positioning control, and controlling the assembly concentricity of the pressure chamber parts, pressure deformation elements, deformation support elements and signal element housings within a required range, making the assembly before brazing very simple, and being able to easily control the concentricity of several other deformation elements before assembly welding, thereby reducing the accuracy of the brazing tooling, improving the qualified rate of the product, reducing the number of tooling updates, and greatly reducing the loss of tooling materials and reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 The utility model is a three-dimensional structural schematic diagram of a pressure sensor assembly installed and positioned in a tooling.

[0012] Figure 2 This is a schematic diagram of the cross-section structure of a pressure sensor assembly of the utility model.

[0013] Figure 3 The utility model is a schematic diagram of the explosion structure of a pressure sensor assembly. DETAILED DESCRIPTION

[0014] The structure of the utility model is further described below in conjunction with the accompanying drawings.

[0015] Reference Figures 1 to 3The pressure sensor assembly of the utility model includes a pressure chamber part 1, a pressure deformation element 2, a deformation support element 4 and a signal element housing 5. The pressure chamber part 1, the pressure deformation element 2, the deformation support element 4 and the signal element housing 5 are stacked in sequence. The signal element housing 5 is provided with a positioning accommodating hole 51. The deformation support element, the pressure deformation element and the pressure chamber part are stacked in sequence from the bottom end of the positioning accommodating hole to the top. In this embodiment, the positioning accommodating hole 51 is a stepped hole, and the deformation support element is located on the step of the stepped hole. The periphery of the pressure chamber part, the pressure deformation element and the deformation support element is positioned and restricted by the positioning accommodating hole, thereby ensuring that the pressure chamber part, the pressure deformation element, the deformation support element and the signal element housing remain concentric.

[0016] In this embodiment, the pressure sensor assembly further includes a deformation sensitive element 3, a connecting wire 6 is provided on the deformation sensitive element, the deformation sensitive element is arranged in close contact with the pressure deformation element, and a through hole 7 for exposing the connecting wire is provided on the deformation support element and the signal element housing; a supporting strip 21 is provided in the middle of the pressure deformation element 2, and the deformation sensitive element 3 is arranged in close contact with the supporting strip. Thus, the connecting wire is located in the center of the entire assembly, thereby improving the qualified rate of the product.

[0017] In this embodiment, the deformation support element is a steel sheet. The projection contours of the pressure chamber parts, the pressure deformation element, the deformation support element and the signal element housing along the height direction are all circular, so as to facilitate manufacturing and assembly.

[0018] The pressure chamber parts, pressure deformation element, deformation support element and signal element housing of the pressure sensor assembly of the utility model are stacked in sequence, and the deformation support element, pressure deformation element and pressure chamber parts are stacked upward from the bottom end of the positioning accommodating hole in sequence, thereby increasing the positioning control, and controlling the assembly concentricity of the pressure chamber parts, pressure deformation element, deformation support element and signal element housing within a required range, making the assembly before brazing very simple, and can easily control the concentricity of several other deformation elements before assembly welding, thereby reducing the accuracy of the brazing tooling, improving the qualified rate of the product, reducing the number of tooling updates, greatly reducing the loss of tooling materials, and reducing production costs.

[0019] Although the specific implementation of the utility model is described in detail in conjunction with the drawings, it should not be understood as limiting the protection scope of the utility model. Within the scope described in the claims, various modifications and variations that can be made by those skilled in the art without creative work still belong to the protection scope of the utility model.

Claims

1. A pressure sensor assembly, comprising a pressure chamber part, a pressure deformation element, a deformation support element and a signal element housing, characterized in that: The pressure chamber parts, pressure deformation element, deformation support element and signal element housing are stacked in sequence, a positioning accommodating hole is provided on the signal element housing, and the deformation support element, pressure deformation element and pressure chamber parts are stacked in sequence from the bottom end of the positioning accommodating hole to the top end and placed in the positioning accommodating hole.

2. A pressure sensor assembly as claimed in claim 1, characterized in that: The positioning accommodating hole is a stepped hole, and the deformable supporting element is located on the step of the stepped hole.

3. A pressure sensor assembly as claimed in claim 1, characterized in that: The pressure sensor assembly also includes a deformation sensitive element, on which a connecting wire is provided, and the deformation sensitive element is arranged in close contact with the pressure deformation element; the deformation support element and the signal element housing are provided with through holes for exposing the connecting wire; a supporting strip is provided in the middle of the pressure deformation element, and the deformation sensitive element is arranged in close contact with the supporting strip.

4. A pressure sensor assembly as claimed in claim 1, characterized in that: The projection contours of the pressure chamber parts, the pressure deformation element, the deformation support element and the signal element housing along the height direction are all circular.

5. A pressure sensor assembly as claimed in claim 1, characterized in that: The deformation support element is a steel sheet.

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