Loudspeaker
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
N/A
app pub date -
Jan 26, 2017
filing date -
Jul 18, 2016
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A loudspeaker is disclosed. The loudspeaker includes a frame; a vibration system accommodated in the frame, a voice coil for driving the voice diaphragm and a support installed at one end of the voice coil away from the voice diaphragm. The vibration system includes a voice diaphragm, and the support is connected to the frame for providing elastic support to the voice coil. The loudspeaker further includes a magnetic circuit system for driving the vibration system. The magnetic circuit system includes a yoke, a first magnet portion, and a second magnet portion. The second magnetic portion includes an auxiliary magnet and an auxiliary pole plate overlapped with the auxiliary magnet. A light source installed on the auxiliary pole plate and opposite to the support, and a photosensitive sensor arranged on the support and being within the irradiation scope of the light source are further provided.
First Claim
Family
International Classification(s)
Cited Art Landscape
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