Bobbin and loudspeaker using the same
AssigneesTsinghua University, Hon Hai Precision Industry Co., Ltd.
InventorsLiang Liu, Jia-Ping Wang
Life of this patent
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Abstract
A bobbin includes a paper matrix and a plurality of carbon nanotubes dispersed in the paper matrix. A loudspeaker includes a magnetic circuit, a bobbin, a voice coil, a damper, and a diaphragm. The magnetic circuit defines a magnetic gap. The bobbin is located in the magnetic gap and includes a paper matrix and a plurality of carbon nanotubes dispersed in the paper matrix. The voice coil is wounded on the bobbin. The damper is fixed to the bobbin. The diaphragm includes an inner rim fixed to the bobbin and held mechanically by the damper.
Claims17
A bobbin comprising:
- a paper matrix having a hollow cylindrical structure;
- and
- a plurality of carbon nanotubes dispersed in the paper matrix, wherein a length of each of the plurality of carbon nanotubes ranges from about 200 micrometers to about 900 micrometers.
A loudspeaker comprising:
- a magnetic circuit defining a magnetic gap;
- a bobbin located in the magnetic gap, the bobbin comprising a paper matrix and a plurality of carbon nanotubes dispersed in the paper matrix, wherein a length of each of the plurality of carbon nanotubes ranges from about 200 micrometers to about 900 micrometers;
- a voice coil wound on the bobbin;
- a damper fixed to the bobbin;
- and
- a diaphragm comprising an inner rim fixed to the bobbin and held mechanically by the damper.
Dependencies are inferred from the claim text.