Error-prevention assembly mechanism and detection method for LCD (liquid crystal display) screen

Abstract

The invention discloses an error-prevention assembly mechanism for LCD (liquid crystal screen) screen, wherein the LCD screen comprises a filter, a light guide plate, a reflecting plate and a screen shell, the error-prevention assembly mechanism is provided with a detection bracket, the error-prevention assembly mechanism is also provided with three detecting rods, respectively detecting rod NO. one, two, and three, which are respectively inserted into the guide holes of detection brackets, three micro switches are set on the sliding blocks corresponding to the ends of the detecting rods, three adjusting screws are locked on the detection bracket connection through locking nuts, and are respectively screwed into sliding blocks through the guide holes of the detection brackets. By adopting the technical scheme, any kind of omissions of the reflective films, light guide plates, filters can be measured out only by the three adjusting screws; at the same time wrong order of the light guide plates and filters can be measured out; the micro switch detection structure is characterized by smaller volume compared with a displacement sensor, convenient installation and replacement, low cost, simple structure and convenient adjustment.

Description

technical field [0001] The invention belongs to the technical field of manufacturing technology of auto parts, and relates to liquid crystal screen assembly and testing equipment for automobile instruments. More specifically, the invention relates to an error-proof assembly mechanism for liquid crystal screens. In addition, the present invention also relates to a detection method of the error-preventing assembly mechanism. Background technique [0002] Among the many parts of the car instrument, the LCD screen has become an indispensable display part. The LCD screen component is mainly composed of a shell, an LCD screen, a filter, a light guide, and a reflector. Except that the liquid crystal screen is a glass product, all the others are plastic parts in these parts. Factors affecting the quality of LCD screen components In addition to the quality of the LCD screen parts themselves, the assembly quality of its components is crucial. [0003] The assembly of the LCD screen...

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that the cost is high—the displacement sensor is expensive; the disadvantage is that the three positioning slots of the LCD screen are close to ea

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