Manufacturing method of oxygen sensor connector and connector

Abstract

The present invention provides a manufacturing method of an oxygen sensor connector and a connector. The manufacturing method comprises the following steps of: detecting of a resistance value of a variable thick film resistance sheet, and dispensing a soldering flux of soldering points of the resistance sheet; performing 90-degree bending and blanking of a terminal; performing hot pressure weldingof the variable thick film resistance sheet and the terminal; and performing dispensing of a plastic component, assembling the terminal to the plastic part and performing UV light irradiation and solidification, performing detection of the resistance value of the variable thick film resistance sheet once again, and allowing qualified connectors to roll off the production line to packing tubes forpacking. The connector manufactured by employing the method comprises a plastic part terminal and a variable thick film resistance sheet, and the plastic part is provided with bayonets and openings corresponding to the terminal in shape, and is also provided with a notch corresponding to the resistance sheet in shape; the terminal is in welding connection with the variable thick film resistance sheet and are arranged at the outer surface of the plastic part so that the whole connector structure is clear at a glance, maintenance and checking in future are convenient, position steadiness of thevariable thick film resistance sheet is ensured, and the variable thick film resistance sheet is not easy to fall off.

Description

technical field [0001] The invention relates to a method for manufacturing a connector and the connector, in particular to a method for manufacturing the connector used in an oxygen sensor and the connector. technical background [0002] In order to obtain a high exhaust gas purification rate and reduce the components of (CO) carbon monoxide, (HC) hydrocarbons and (NOx) nitrogen oxides in the exhaust, EFI vehicles must use three-way catalytic converters. On an engine that uses a three-way catalytic converter to reduce exhaust pollution, an oxygen sensor is an essential component. Once the air-fuel ratio of the mixture deviates from the theoretical air-fuel ratio, the purification ability of the three-way catalyst for CO, HC and NOx will drop sharply, so an oxygen sensor is installed in the exhaust pipe to detect the concentration of oxygen in the exhaust gas, and to The ECU sends a feedback signal, and the engine management system sends instructions to each actuator to comp...

AI Technical Summary

Problems solved by technology

However, in such an oxygen sensor connector structure, there are still several problems as follows: (1) The structure of the terminal and the connector is complicated, and the manufacturing cost is high; In the device, it is easy to cause the variable resistance components to fall off and complicate the assembly process of the connector, increase the rework rate of the product, thereby affecting the production efficiency of the entire product; (3) for the laser adjustment of the resistance value of the variable resistance components Step, although there is an adjustment window in the connector, but due to the setting of the window size, the laser adjustment position is limited, and it is easy to cause damage to the outer surface of the connector, affecting the sealing

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