Four hot pressing connected body oxygen sensor outer clamped by end buckles

Abstract

The invention discloses a four hot pressing connected body oxygen sensor outer clamped by end buckles, comprising a double-layer heat shield, a hexagonal nut clamping assembly, oxygen sensing chip assemblies, a main body copper protection sleeve, a four hot pressing outer clamping steel sleeve, a sealing ring, an insulated thermal insulation assembly, and a sensing wire harness assembly. The double-layer heat shield is fixedly welded to the front end of the hexagonal nut clamping assembly. The rear end of the hexagonal nut clamping assembly is fastened with the main body copper protection sleeve. The inner parts of the main body copper protection sleeve and the hexagonal nut clamping assembly and the double-layer heat shield are all arranged with an oxygen sensing chip assembly respectively. The insulated thermal insulation assembly is arranged between the oxygen sensing chip assembly and the main body copper protection sleeve. The tail of the chip in the oxygen sensing chip assembly is connected with the sensing wire harness assembly. According to the four hot pressing connected body oxygen sensor outer clamped by end buckles, the problem that the outer surface of the sensing wireharness assembly will be easily damaged by the high temperature heat diffused from the engine is solved through the four hot pressing outer clamping steel sleeve structure, the overall stability is good, the clamping connection is convenient, the strength is high, and is suitable for being popularized and used in the production and manufacturing of automobile oxygen sensors.

Description

Technical field [0001] The invention relates to the field of automobile oxygen sensors, in particular to a four-hot-compression conjoined oxygen sensor with an end buckle and an external card. Background technique [0002] The oxygen sensor is a chip based on the electrochemical principle through the detection of oxygen ion components in the exhaust gas to detect the degree of oxygen content in the exhaust gas rich and lean, and then detect and control the fuel ratio in the engine, and the oxygen sensor transmits the detected relevant data to the center The processor performs analysis and processing, so as to realize the control of the optimal air-fuel ratio of the automobile engine, and achieve the purpose of energy saving, consumption reduction and environmental protection. The oxygen sensor is an important component of the fuel feedback control system of an automobile engine. The ordinary oxygen sensor has the following problems in actual use: 1. When the car is actually work...

AI Technical Summary

Problems solved by technology

Common oxygen sensors have the following problems in actual use: 1. When the car is actually running, the engine temperature is high, and high-temperature thermal diffusion of the engine will occur, which will easily cause the outer surface of the sensing harness at the tail of the oxygen sensor to be damaged due to excessive temperature. 2. The design of the connection between the main protective cover and the outer card steel sleeve is unreasonable, and it is easy to fall off; 3. When the oxygen sensor is in use, the end of the outer card steel sleeve and the sensor harness assembly The contact parts of the sensor are prone to wear and tear, causing the wire harness in the sensor harness assembly to be worn off; 4. The overall positioning of the chip board in the oxygen sensor chip assembly is unstable, and it is prone to shaking, causing the chip board to break and the oxygen sensor to be scrapped

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