Bobbin and loudspeaker using the same
AssigneesTsinghua University, Hon Hai Precision Industry Co., Ltd.
InventorsLiang Liu, Jia-Ping Wang
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Abstract
A bobbin is a hollow tubular structure formed of a carbon nanotube composite structure. A loudspeaker includes a magnetic circuit; a bobbin; a voice coil; and a diaphragm. The magnetic circuit defines a magnetic gap. The bobbin is located in the magnetic gap. The voice coil is wounded on the bobbin. The diaphragm includes an inner rim fixed to the bobbin. The bobbin is a hollow tubular structure formed of a carbon nanotube composite structure.
Claims19
A bobbin comprising a carbon nanotube composite structure, wherein the carbon nanotube composite structure comprises a matrix and at least one carbon nanotube structure composited with or in the matrix, and the at least one carbon nanotube structure comprises a plurality of carbon nanotubes attracted by van der Waals attractive force therebetween.
A bobbin, comprising
- a hollow tubular structure comprising a plurality of carbon nanotubes attracted by van der Waals attractive force therebetween, the plurality of carbon nanotubes defining a plurality of interspaces;
- and
- a matrix infiltrating into the interspaces.
A loudspeaker, comprising:
- a magnetic circuit defining a magnetic gap;
- a bobbin located in the magnetic gap;
- a voice coil wounded on the bobbin;
- and
- a diaphragm comprising an inner rim fixed to the bobbin,
- wherein the bobbin is a hollow tubular structure comprising a carbon nanotube composite structure, the carbon nanotube composite structure comprises a matrix and at least one carbon nanotube structure composited with or in the matrix, and the at least one carbon nanotube structure comprises a plurality of carbon nanotubes attracted by van der Waals attractive force therebetween.
Dependencies are inferred from the claim text.