Assembly fixture for magnetic circuit structure of miniature loudspeaker

Abstract

The invention provides an assembly fixture for a magnetic circuit structure of a miniature loudspeaker, which is used for combining a main magnet and a main magnetic plate as a main magnet assembly, combining a sub magnet and a magnetically conductive bottom plate as a sub magnet assembly, and assembling the main magnet assembly and the sub magnet assembly into a magnetic return structure of the micro loudspeaker. According to the assembly fixture for the magnetic circuit structure of the miniature loudspeaker of the present invention, the main magnet, the main magnet plate, the sub magnet andthe magnetic conductivity base plate can be assembled at one time under precise alignment, and a consistent magnetic gap can be maintained, and the magnetic gap can be cooperated with an automated production process, thereby reducing the risk of bad operation and achieving the effect of increasing production efficiency.

Description

technical field [0001] The invention relates to a jig for assembling a magnetic return structure of a micro-speaker. Background technique [0002] Due to the small size of the micro-speaker, in order to increase the volume output, it is usually equipped with a multi-magnetic design to increase the electromagnetic force. The so-called multi-magnetic design generally refers to a magnetic return assembly formed by at least one inner magnet and at least one outer magnet ring-shaped surrounding the inner magnet, together with other magnetically conductive components. Since microspeakers are rectangular in design, common multi-magnet designs include a three-magnet design, that is, one inner magnet and two outer magnets on either side of the inner magnet, or a five-magnet design, that is, a The inner magnet and the four outer magnets arranged on the four sides of the magnet define a magnetic gap between the inner and outer magnets to accommodate the voice coil. [0003] However, ...

AI Technical Summary

Problems solved by technology

[0003] However, due to the small size of the micro-speaker, if a multi-magnet design is used, it is beneficial to increase the volume, but the magnets and magnetic components are small in size, not only difficult to assemble, but the assembly process is also relatively cumbersome, and the assembly tolerance must be strictly controlled during assembly. , so that the magnetic gap (that is, the distance between the magnets) is consistent, so as to avoid the magnet from intruding into the magnetic gap, hindering the action of the voice coil and causing the speaker to be defective

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