Patent ID: 11950073
Assignee: AAC MICROTECH (CHANGZHOU) CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A coaxial speaker comprising:
a frame;
a vibration system supported by the frame;
a magnetic circuit system fixed to the frame, including a magnetic conduction assembly fixed to the frame, and a magnet assembly fixed to the magnetic conduction assembly;
a ring-shaped first magnetic conduction plate formed by the magnetic conduction assembly;
an inner side wall fixed to the first magnetic conduction plate;
an outer side wall surrounding the inner side wall;
a second magnetic conduction plate fixed at an end of the inner side wall away from the first magnetic conduction plate; wherein
the magnet assembly includes:
a first magnet fixed on a side of the second magnetic conduction plate facing the inner side wall;
a second magnet fixed on the side of the second magnetic conduction plate away from the inner side wall;
a first magnetic gap formed by the first magnet and the inner side wall;
a second magnetic gap formed by the inner side wall, the second magnetic conduction plate and the second magnet; and
the vibration system includes:
a first vibration assembly having a first diaphragm fixed on the frame and a first voice coil fixed on the first diaphragm and at least partially inserted into the first magnetic gap;
a second vibration assembly spaced apart from the first vibration assembly, including a second diaphragm and a second voice coil fixed to the second diaphragm and at least partially inserted into the second magnetic gap;
a first opening formed in the frame;
a second opening formed in the frame and spaced from the first opening along a vibration direction; and wherein
the second diaphragm is fixed on the frame and covers the second opening, and when the second diaphragm vibrates, sound waves are exported to outside through the first opening.