| CPC H04R 9/025 (2013.01) [H04R 1/24 (2013.01); H04R 1/2811 (2013.01); H04R 7/12 (2013.01); H04R 7/18 (2013.01); H04R 9/043 (2013.01); H04R 9/06 (2013.01); H04R 9/063 (2013.01); H04R 2209/022 (2013.01)] | 10 Claims |
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1. A speaker device, comprising:
a first frame;
a first vibration system, comprising:
a first diaphragm fixed at an outer periphery to the first frame, which is configured to produce low-frequency sounds; and
a first voice coil configured to drive the first diaphragm to vibrate for sound production;
a magnetic circuit system, fixed to the first frame, a side of which close to the first vibration system is provided with a first magnetic gap, wherein the first voice coil is inserted and suspended in the first magnetic gap;
a second frame, fixed to a top of the magnetic circuit system;
a second vibration system, comprising:
a second diaphragm fixed at its outer periphery to a side of the second frame away from the magnetic circuit system, which is configured to produce high-frequency sounds; and
a second voice coil configured to drive the second diaphragm to vibrate for sound production, which is suspended above and spaced apart from the magnetic circuit system;
a conductive member, extended from a bottom of the magnetic circuit system through the magnetic circuit system toward a bottom of the second diaphragm, and electrically connected to the second voice coil;
wherein the magnetic circuit system comprises:
a lower splint, provided with a first through-hole, wherein the first through-hole is arranged through the lower splint;
a first main magnetic steel, fixedly stacked on the lower splint, and provided with two second through-holes, wherein the two second through-holes are both arranged through the first main magnetic steel;
a first sub-magnetic steel, fixedly stacked on the lower splint, wherein the first sub-magnetic steel is arranged around the first main magnetic steel and spaced apart from the first main magnetic steel to form the first magnetic gap;
a pole core, comprising:
a pole core body, fixedly stacked on the first main magnetic steel; and
two third through-holes arranged through the pole core body, wherein the third through-holes are in communication with the corresponding second through-holes, respectively;
a second main magnetic steel, fixedly stacked on the pole core body, wherein two fourth through-holes are arranged through the second main magnetic steel, and the fourth through-holes are in communication with the corresponding third through-holes, respectively; and
a second sub-magnetic steel, fixedly stacked on the pole core body, and arranged around the second main magnetic steel; wherein the second frame is fixedly supported on a top of the second sub-magnetic steel; the second voice coil is spaced apart and suspended above the magnetic circuit system, and the second voice coil is located within a magnetic field of the second main magnetic and within a magnetic field of the second sub-magnetic steel; a magnetization direction of the first sub-magnetic steel is the same as a magnetization direction of the second sub-magnetic steel, a magnetization direction of the first main magnetic steel is same as a magnetization direction of the second main magnetic steel, and the magnetization direction of the second main magnetic steel is opposite to the magnetization direction of the second sub-magnetic steel;
wherein both ends of the conductive member are fixed to a top of the second main magnetic steel through the first through-hole, the two second through-holes, the two third through-holes, and the two fourth through-holes in sequence from a bottom of the magnetic circuit system, and are electrically connected to the second voice coil.
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