Application number: 2019208547414
The utility model relates to an ultra-thin magnetic circuit structure of a speaker, which comprises a U-shaped yoke and a main magnet, a washer and a sub-magnet arranged in the U-shaped yoke from bottom to top. The top of the washer is provided with a sinking platform. The sub-magnet is fixed in the sinking platform on the top of the washer. The sinking platform includes a middle recessed part and two side limit parts, the sub-magnet is located in the middle recessed part of the sinking platform, the sub-magnet is limited by the limit parts on both sides of the sinking platform. The ultra-thin magnetic circuit of the speaker of the present invention. The structure is equipped with a sinking platform on the top of the washer, and the sub-magnet is fixed in the sinking platform on the top of the washer, which compresses the magnetic circuit space and reduces the height of the magnetic circuit structure.