An oxygen sensor and packaging method thereof
An oxygen sensor and plug-in technology, applied in the field of oxygen sensor and its packaging, can solve the problems of the oxygen sensor not being used normally, the exhaust gas cover falling off, etc., and achieving the effect of reducing one riveting step and improving production efficiency
Active Publication Date: 2020-02-14
ZHUHAI LUCKYMAN TECH CO LTD
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Problems solved by technology
[0004] The problem existing in this kind of oxygen sensor is that the exhaust gas cover protrudes independently from the front end of the hexagonal seat, and the fixed connection between the exhaust gas cover and the hexagonal seat is only realized by riveting. During the use of the oxygen sensor, the exhaust gas cover is easy to produce The oxygen sensor cannot be used normally due to falling off
Method used
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[0037] see figure 1 , figure 2 with image 3 , figure 1 It is a structural diagram of the first embodiment of the oxygen sensor of the present invention, figure 2 is a cross-sectional view of an embodiment of the oxygen sensor of the present invention, image 3 It is a structural diagram of the hexagonal seat and the exhaust gas cover in the embodiment of the oxygen sensor of the present invention. The oxygen sensor includes a hexagonal seat 1 , an exhaust gas cover 2 , a gasket 23 , a front ceramic body 3 , a sealing block 4 , a rear ceramic body 5 , a terminal assembly 6 , a chip 7 , a sleeve 8 and a sealing plug 9 . The hexagonal seat 1 is provided with an accommodation cavity 100 that runs through the upper and lower ends of the hexagonal seat 1. The exhaust gas cover 2, the gasket 23, the front ceramic body 3, the sealing block 4 and the rear ceramic body 5 are sequentially arranged in the accommodation cavity 100, and the chip 7 is fixed in the accommodation chambe...
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Abstract
The invention provides a novel oxygen sensor and an encapsulation method thereof, and belongs to the technical field of a gas sensor for an automobile. A baffle ring for shielding an accommodating cavity is arranged on a hexagonal seat of an oxygen sensor; the diameter of an opening formed in the front end of the middle part of the baffle ring is smaller than the diameter of the accommodating cavity; the back end of an exhaust cover is provided with a flange; the outer diameter of the flange is greater than the outer diameter of an exhaust cover body. During the encapsulation between the exhaust cover and the hexagonal seat, the exhaust cover extends into the accommodating cavity from the back end of the hexagonal seat; the exhaust cover body extends out from the opening formed in the front end of the hexagonal seat; the flange is positioned in the accommodating cavity; then, a front ceramic body is arranged in the accommodating cavity; the flange is fixed between the baffle ring and the front ceramic body. The exhaust cover is stabilized in the hexagonal seat; the loosing prevention of the exhaust cover is realized; meanwhile, the riveting work procedure between the exhaust coverand the hexagonal seat is omitted; the installation of the exhaust cover is more stable and firmer; the time cost is reduced; the production efficiency is improved.
Description
technical field [0001] The invention relates to the technical field of gas sensors for vehicles, in particular to an oxygen sensor and a packaging method thereof. Background technique [0002] Oxygen sensor is a standard configuration on automobiles. It uses ceramic sensitive elements to measure the oxygen potential in the exhaust pipe of automobiles, and calculates the corresponding oxygen concentration by the principle of chemical balance, so as to monitor and control the combustion air-fuel ratio to ensure product quality and exhaust gas. Measuring element for emission compliance. Oxygen sensor is widely used in the atmosphere control of various coal combustion, oil combustion, gas combustion and other furnaces. It is the best way to measure combustion atmosphere at present. It has the advantages of simple structure, fast response, easy maintenance, convenient use, and accurate measurement. . Using the sensor to measure and control the combustion atmosphere can not only...
Claims
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IPC IPC(8): G01N27/00
CPCG01N27/00
Inventor 向军杜刚
Owner ZHUHAI LUCKYMAN TECH CO LTD