| CPC H04R 9/025 (2013.01) [H04R 1/02 (2013.01); H04R 7/16 (2013.01); H04R 9/045 (2013.01); H04R 9/06 (2013.01); H04R 2400/11 (2013.01)] | 7 Claims |
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1. A coaxial speaker, comprising:
a frame;
a magnetic circuit system including a magnetic bowl having a bottom wall and a side wall extending from the bottom wall, and a magnet part arranged in the magnetic bowl, the magnet part having a first magnet part arranged on the bottom wall and a second magnet part arranged on the first magnet part;
a coaxially arranged first sounding unit and a second sounding unit;
a first magnetic gap formed between the magnet part and the side wall;
a first through hole formed in the bottom wall; wherein
the first magnet part includes:
a first ring magnet disposed on the bottom wall and surrounding the first through hole;
a magnetic yoke disposed on the first ring magnet;
the magnetic yoke includes:
a ring sheet disposed between the first ring magnet and the second magnet part;
an extension wall extending from an inner peripheral edge of the ring sheet; and wherein
the extension wall extends from inside of the first ring magnet to the first through hole; the extension wall, the bottom wall and the first ring magnet cooperatively forms a second magnetic gap; the extension wall forms a first channel; the second magnet part includes a second channel;
the first sounding unit includes:
a first diaphragm fixed to the frame;
a first voice coil assembly accommodated in the first magnetic gap for driving the first diaphragm; and
a support component fixed to the second magnet part for supporting the first diaphragm;
a second through hole is formed by the first diaphragm;
the support component encloses a third channel that is connected with the second through hole; and wherein
the second sounding unit includes a second diaphragm fixed to the bottom wall and covering the first through hole, and a second voice coil assembly accommodated in the second magnetic gap and driving the second diaphragm to vibrate;
the first channel, the second channel and the third channel are connected to form the sound channel of the second sounding unit; the sound emitted by the second sounding unit is emitted from the second through hole through the sound channel with a horn structure.
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