Base with metal circuit and voice coil motor and manufacturing method

Abstract

The present invention is a base with a metal circuit, comprising: an electronic component, a metal circuit welded with the electronic component and formed by stamping once, and a plastic body integrally injection-molded with the metal circuit, and the metal circuit includes at least three A branch circuit, the branch circuit includes pins arranged in parallel and at intervals at one end and solder feet arranged one by one corresponding to the pins of the electronic component at the other end and a main body connecting the pins and the solder legs , the arrangement order of the first pin, the second pin and the third pin is different from the arrangement order of the first solder leg, the second solder leg and the third solder leg, and the solder leg of a branch faces The other leg of the other branch bends in a direction and partially overlaps with the projection of the other leg on at least one of the vertical direction or the horizontal direction. The invention increases the arrangement density of the metal circuit by bending one welding leg of the metal circuit to realize space spanning and space overlapping with another welding leg.

Description

technical field [0001] The invention relates to the technical field of metal circuits, in particular to a base with a metal circuit, a voice coil motor and a manufacturing method. Background technique [0002] Existing bases and voice coil motors with metal circuits, such as the patent application with publication number CN108989511A, this type of base includes electronic components, metal circuits, first plastic parts and second plastic parts, metal circuits and the electronic The components are connected, and include a plurality of branches, and the branches are connected to the pins of the electronic components in a one-to-one correspondence; the first plastic part is located at the position where the metal circuit is connected to the electronic component, and the metal circuit is connected to the electronic component. All branches of the circuit are connected as one. Another patent application with the publication number CN110703536A discloses a driving mechanism, which...

AI Technical Summary

Problems solved by technology

At present, in the existing technology, the way to deal with this technical problem mostly needs to adopt the method of flexible circuit, and complete the space overlap of the circuit in the middle extension section, but the manufacturing process and cost of the flexible circuit board are relatively compared with the metal circuit formed by traditional stamping. branch is relatively higher

Therefore, the use of flexible circuits is not conducive to efficient manufacturing and promotion, and will also cause the overall manufacturing cost of the drive motor to remain high

Another way is to make a double-layer circuit board, but the double-layer circuit board needs two times of stamping and bending, which will also increase the cost to a certain extent, and the double-layer circuit will also increase the overall thickness of the voice coil drive motor , which is not conducive to the miniaturization of the overall size of the voice coil drive motor

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