Patent ID: 11950076
Assignee: AAC MICROTECH (CHANGZHOU) CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A speaker, comprising:
a housing comprising a ring-shaped frame, a front cover and a bottom shell, the front cover and the bottom shell being fixed to the frame and spaced from each other, the frame, the front cover and the bottom shell enclosing a receiving space;
a vibration system for generating sound and a magnetic circuit system with a magnetic gap received in the receiving space, the vibration system comprising a diaphragm fixed on the frame and vibrating along a vibration direction, a voice coil support fixed on the diaphragm and a voice coil inserted into the magnetic gap by the voice coil support, the magnetic circuit system comprising a first magnetic yoke fixed on the front cover and a magnet assembly fixed on the first magnetic yoke;
wherein,
a first opening is provided to penetrate a center portion of the diaphragm along the vibration direction, and the diaphragm comprises an inner edge enclosing the first opening and an outer edge fixed to the frame,
the magnetic circuit system extends through the first opening along the vibration direction and is spaced from the inner edge,
the housing further comprises an extension portion extending from the front cover toward the diaphragm and surrounding the magnetic circuit system at intervals, and the inner edge of the diaphragm is fixed to the extension.