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US 2020/0053481 A1Published application
Loudspeaker
AssigneeClarion Co., Ltd.
InventorsMinoru UENO, Takao ISHIKAWA, Fumiaki NAKASHIMA
Life of this patent
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Abstract
To make it possible to take countermeasures against noises of a loudspeaker by means of a simple configuration. A loudspeaker 10 includes: a bobbin 15 that is provided with a voice coil 31; a diaphragm 13 that is connected to the bobbin 15; a frame 11 that supports the diaphragm 13; and a magnetic circuit section 17 that includes a magnet 22. The loudspeaker 10 further includes: a first conductive body 41 that is connected to the voice coil 31 and is led out to the outside of a bobbin 15A; and a second conductive body 51 that is connected to the first conductive body 41 and penetrates the magnet 22.
Claims9
1:
- A loudspeaker, comprising:
- a bobbin provided with a voice coil;
- a diaphragm connected to the bobbin;
- a frame supporting the diaphragm;
- and
- a magnetic circuit section including a magnet, wherein
- the loudspeaker further comprises:
- a first conductive body connected to the voice coil and led out to an outside of the bobbin;
- and
- a second conductive body connected to the first conductive body and penetrating the magnet.
7 more elements
2:
- The loudspeaker according to claim 1, wherein
- the second conductive body is a coated electric wire covered with a coating having an insulating property.
3:
- The loudspeaker according to claim 1 or 2, wherein
- the second conductive body is wound around the magnet in a number of windings with one or more turns.
4:
- The loudspeaker according to claim 1, wherein
- the magnet is provided with:
- a through hole, the bobbin passing through the through hole;
- and
- a groove part recessed from the through hole to an outer peripheral side, the second conductive body passing through the groove part.
2 more elements
5:
- The loudspeaker according to claim 1, wherein
- the magnet is provided with:
- a through hole, the bobbin passing through the through hole;
- and
- a hole part independent of the through hole, the second conductive body passing through the hole part.
2 more elements
6:
- The loudspeaker according to claim 1, wherein
- the magnetic circuit section includes a laminated component being laminated on the magnet, and the second conductive body penetrates the laminated component.
7:
- The loudspeaker according to claim 6, wherein
- the laminated component includes:
- a plate laminated on a front surface side of the loudspeaker with respect to the magnet;
- and
- a bottom plate laminated on a rear surface side of the loudspeaker,
- the plate is provided with:
- a hole part, the bobbin passing through the hole part, and
- an independent through hole not communicating with this hole part, the second conductive body passing through the through hole, and
- the bottom plate is provided with a notch recessed from an outer peripheral surface of the bottom plate to an inner peripheral side, the second conductive body passing through the notch.
6 more elements
8:
- The loudspeaker according to claim 1, wherein
- a signal passing through the second conductive body is a digital signal.
9:
- The loudspeaker according to claim 1, wherein
- the bobbin includes a multilayer voice coil provided with a plurality of the voice coils;
- from the bobbin, a plurality of the first conductive bodies respectively connected to the voice coils are led out at intervals in a circumferential direction;
- and
- a plurality of the second conductive bodies respectively connected to the first conductive bodies pass through the magnet at intervals in the circumferential direction of the bobbin.
2 more elements