Patent ID: 11930343
Assignee: GOERTEK INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 12:
13. The sound generating unit according to claim 1, wherein the side magnetic circuit portion comprises a side magnet and a side concentrating flux plate disposed on an upper surface of the side magnet;
the side concentrating flux plate is formed with a recessed portion at a side facing the side magnet, and the recessed portion is located on an edge at a side of the side concentrating flux plate away from the magnetic gap, and the recessed portion constitutes the accommodating groove;
or, the side magnet is formed with a recessed portion on a side facing the side concentrating flux plate, and the recessed portion is located on an edge at a side of the side magnet away from the magnetic gap, and the recessed portion constitutes the accommodating groove;
or, the side concentrating flux plate and the side magnet are formed with recessed portions at their sides facing each other, and the recessed portions are located on edges at the sides of the side concentrating flux plate and the side magnet away from the magnetic gap, and the recessed portions of the side concentrating flux plate and the side magnet together constitute the accommodating groove.