| 摘要 |
A speaker is provided, by which a voice coil bobbin can be prevented from coming in contact with a yoke, thereby preventing the voice coil bobbin from being deformed. The speaker includes a diaphragm unit, magnetic circuit unit, case and restriction member. The diaphragm unit includes a diaphragm, damper and voice coil bobbin to which a voice coil is attached. The magnetic circuit unit includes a yoke that attaches a magnet thereto and faces to an end of the voice coil bobbin along an axis. The case is arranged between the damper and magnet facing to the damper along the axis. The restriction member protrudes from an inner edge of the casing toward the damper. The restriction member comes in contact with the damper, thereby preventing the end of the voice coil bobbin from coming in contact with the yoke, even if the end approaches the yoke.
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