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Sensor seat and assembly thereof

A sensor base and sensor technology, applied in the direction of measuring instrument components, instruments, engine components, etc., can solve problems such as poor welding and increase manufacturing costs, and achieve the effects of reducing poor welding, saving manufacturing costs, and facilitating installation

Pending Publication Date: 2022-07-19
SHANGHAI TENNECO EXHAUST SYST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The diameter tolerance of the sensor seat is generally D±0.5mm, the size tolerance of the mounting hole on the shell that matches the sensor seat is (D+0.7)±0.5mm, and the maximum gap between the two sides is 1.7mm in the limit state, and the welding process requires The maximum bilateral gap is 1mm, so poor welding may occur
If the bilateral clearance is reduced by reducing the manufacturing tolerance of the diameter of the sensor seat and the aperture, it will increase the manufacturing cost

Method used

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  • Sensor seat and assembly thereof
  • Sensor seat and assembly thereof
  • Sensor seat and assembly thereof

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Embodiment Construction

[0011] Please refer to Figure 1 to Figure 3 As shown, the present invention discloses a sensor base assembly 100 , which includes a housing 1 and a sensor base 2 . The housing 1 is provided with a circular mounting hole 11 . The sensor base 2 is provided with a through hole 21 for installing the sensor. In an embodiment of the present invention, the through holes 21 are threaded holes.

[0012] The sensor seat 2 is provided with a tapered outer surface 22 , wherein the tapered outer surface 22 is tapered in diameter along the installation direction A of the sensor seat 2 . In other words, the included angle α between the contour lines on both sides of the tapered outer surface 22 and the horizontal plane is greater than 90°.

[0013] During installation, the end of the sensor seat 2 with the smaller diameter is inserted into the installation hole 11 and pressed by a tool, and the part of the sensor seat 2 with a diameter larger than the installation hole 11 protrudes out o...

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Abstract

A sensor seat is provided with a through hole used for installing a sensor, the sensor seat is provided with a conical outer surface, and the diameter of the conical outer surface is gradually reduced in the installation direction of the sensor seat. The invention further discloses a sensor seat assembly, the sensor seat assembly comprises a shell and a sensor seat, the shell is provided with a circular mounting hole, the sensor seat is partially inserted into the mounting hole, and the conical outer surface is matched with the mounting hole so as to be fixed through gapless welding. Compared with the prior art, the sensor seat is provided with the conical outer surface, so that the installation is convenient. The small-diameter end of the sensor seat is easily inserted into the mounting hole, the part with the diameter larger than that of the mounting hole protrudes out of the mounting hole, and the conical outer surface of the sensor seat can be welded with the mounting hole in a gapless manner, so that poor welding is reduced, and the manufacturing cost is saved.

Description

technical field [0001] The invention relates to a sensor seat and an assembly thereof, belonging to the technical field of after-treatment of engine exhaust gas. Background technique [0002] Existing sensor mounts typically have cylindrical outer surfaces, which are typically fabricated by powder metallurgy. The diameter tolerance of the sensor seat is generally D±0.5mm, the dimensional tolerance of the mounting hole matching the sensor seat on the shell is (D+0.7)±0.5mm, and the maximum bilateral gap under the limit state is 1.7mm, while the welding process requires The maximum bilateral clearance is 1mm, so poor welding may occur. To reduce the bilateral gap by reducing the diameter of the sensor seat and the manufacturing tolerance of the hole diameter will increase the manufacturing cost. SUMMARY OF THE INVENTION [0003] The purpose of the present invention is to provide a sensor base and its components with low cost and easy installation. [0004] In order to ach...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N13/00F01N11/00G01D11/30G01D11/24
CPCF01N13/008F01N11/00G01D11/30G01D11/245
Inventor 张鹏飞万加一印仁军
Owner SHANGHAI TENNECO EXHAUST SYST
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