Fixture pressing mechanism for flexible circuit board

Abstract

The invention provides a fixture pressing mechanism for a flexible circuit board. The fixture pressing mechanism comprises a pressing body, and a base, wherein a location groove and a guide groove are formed on the pressing part on the lower surface of the pressing body; the location groove is formed at the middle part of the guide groove; the base includes a horizontal part and a floating groove raised above the horizontal part; the floating groove can move by a predetermined distance in each dimension; the pressing body is tightly clamped on the base through the fit between the guide groove and the floating groove; and a detection probe in the location groove is electrically connected with a corresponding test pin on the flexible circuit board. In comparison to the prior art, the fixture pressing mechanism provided by the invention can prevent displacement of the flexible circuit board in the pressing process, and the pressing body can be reliably aligned to the flexible circuit board to obviate probe breakage caused by inaccurate alignment, thereby improving the alignment accuracy and the testing efficiency, and protecting the flexible circuit board from being crushed.

Description

technical field [0001] The invention relates to a test fixture, in particular to a fixture pressing mechanism of the test fixture. Background technique [0002] At present, after the liquid crystal panel is assembled, various tests before leaving the factory are generally carried out. During these tests, it is usually necessary to connect the connector of the panel to be displayed, such as a flexible printed circuit (FPC), to the connector of the test circuit board. In the prior art, most of the connectors of the test circuit board adopt pin connectors. When testing the circuit board of the liquid crystal panel, the flexible circuit board is first placed on the test platform of a test fixture, and then the test The pin-type connector of the circuit board and the flexible circuit board are manually pressed together. At this time, each metal probe of the pin-type connector is electrically connected to the corresponding terminal of the flexible circuit board. electrical conti...

AI Technical Summary

Problems solved by technology

[0003] The needle connector includes a test platform, a pressure plate and an indenter. When the pressure plate is pressed down at a certain angle, since the indenter has an inclined initial angle with the top surface of the flexible circuit board of the liquid crystal panel, the indenter is opposite to the flexible circuit board. When the applied force is uneven, it is easy to cause the flexible circuit board to shift during the pressing process of the indenter and the flexible circuit board, resulting in the flexible circuit board being warped or damaged

In addition, it is difficult to ensure the alignment accuracy between the indenter and the flexible circuit board, which often causes the probe of the pin connector of the test circuit board to break or cannot be electrically connected to the corresponding terminal of the flexible circuit board, so it is difficult to achieve the expected Testing purposes

[0004] In view of this, how to design a fixture pressing mechanism for the above-mentioned test fixture so that the flexible circuit board will not be displaced during the pressing process, and the pin connector and the flexible circuit board It can be reliably aligned to avoid probe breakage caused by inaccurate alignment or the probe cannot be electrically connected to the corresponding terminal of the flexible circuit board, improve alignment accuracy and test efficiency, and protect the flexible circuit board from being crushed. It is an urgent problem to be solved by relevant technical personnel in the industry

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