Position structure of printed circuit board

Abstract

The invention provides a position structure of a printed circuit board, which is applied in the electric connector field, particularly the low-frequency connector field. The position structure of the printed circuit board comprises a shell which has a printed circuit board installing space surrounded by a frame and used for accommodating the printed circuit board; and at least one locating piece which is disposed at the inner side of the frame and used for positioning and fixing the printed circuit board positioned in the printed circuit board installing space. The degree of freedom of the printed circuit board in the shell can be limited through the position structure, and the printed circuit board can be stably fixed in the shell, thereby ensuring stable and excellent welding effects between the printed circuit board and devices.

Description

【Technical field】 [0001] The invention relates to a positioning structure, in particular to a positioning structure of a printed circuit board used in a low-frequency connector. 【Background technique】 [0002] In the field of electrical connectors, especially in the field of low-frequency connectors, the installation of printed circuit boards in plastic housings is usually achieved by welding to fix the printed circuit boards, that is, first by reflow soldering, the components are soldered on the on the printed circuit board, and then insert or insert the metal terminal into the plastic shell, and at the same time, open a hole on the printed circuit board to let the terminal pass through the printed circuit board, and then use wave soldering or automatic spot welding to insert the metal terminal Solder firmly with the printed circuit board, so that the circuit of the printed circuit board is connected. In other words, the installation of the printed circuit board in the pla...

AI Technical Summary

Problems solved by technology

[0005] First of all, before soldering, the position between the hole on the printed circuit board and the terminal of the component is required to be accurately positioned. In the prior art, the process of inserting the pin first and then bending is difficult to ensure the position accuracy. , resulting in uncontrollable welding quality. Therefore, in order to obtain a better position, the usual practice is to use insert molding technology to fix the components on the plastic shell in advance.

However, production practice has proved that the cost of insert molding technology is relatively high

[0006] Secondly, since the printed circuit board cannot be fixed in the plastic shell, it is usually necessary to design a specific fixture to fix the printed circuit board during welding, which not only prolongs the installation time, but also increases the cost and process cycle , furthermore, it will bring some troubles to quality control

[0007] In addition, even with specific fixtures, there is still a possibility that the PCB may be displaced before soldering due to insufficient fixation of the PCB, so that it is still possible that after the soldering between the component and the PCB is completed, the terminals may be Situation of oblique soldering on a printed circuit board

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