Micro Speaker
AssigneeAAC Technologies Pte. Ltd.
InventorYang Zhang
Life of this patent
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Abstract
A micro speaker is disclosed. The micro speaker includes a vibration system including a diaphragm and a voice coil for driving the diaphragm, the diaphragm including a conductive dome a suspension surrounding the conductive dome; a magnetic circuit system including a lower plate, a first magnetic part on the lower plate, a second magnetic part on the lower plate, a pole plate attached to the first magnetic part and including a plurality of units, one of the first and second magnetic part being a permanent magnet for forming a magnetic gap; capacitors formed by the conductive dome and the units of the pole plate for outputting electrical signals according to vibrations of the diaphragm and for detecting real-time replacement of the diaphragm.
Claims10
A micro speaker, comprising:
- a vibration system including a diaphragm and a voice coil for driving the diaphragm, the diaphragm including a conductive dome a suspension surrounding the conductive dome;
- a magnetic circuit system including a lower plate, a first magnetic part on the lower plate, a second magnetic part on the lower plate, a pole plate attached to the first magnetic part, one of the first and second magnetic part being a permanent magnet for forming a magnetic gap;
- wherein
- the pole plate includes a plurality of units isolated from each other, and each unit forms a capacitor together with the conductive dome for outputting electrical signals according to vibrations of the diaphragm and for detecting real-time replacement and unbalanced vibration of the diaphragm.
Dependencies are inferred from the claim text.