| 摘要 |
PROBLEM TO BE SOLVED: To provide a magnetic circuit of a micro speaker, in which a magnet and an upper plate fixed to an upper part of an outer circumferential edge of a yoke are integrally coupled with a speaker frame without the need for jointing process via an adhesive separate from the speaker frame by means of injection molding, coupling among magnetic circuit components of the micro speaker is facilitated to enhance the workability and the productivity so that the product can be slim and the fixing of the magnetic circuit is very firm. SOLUTION: The technical configuration of the magnetic circuit for the micro speaker is characterized in that the yoke 100, the magnet 200 fixed to the upper part of the outer circumferential part and the upper plate 300 fixed on the magnet 200 are integrated by forming a frame with injection molding to attain a firm coupling and to make the product slim.
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