| 摘要 |
PURPOSE: A cell speaker is provided to easily change its design by directly connecting vibration of a voice coil to a vibration plate in a magnetic circuit of a speaker. CONSTITUTION: A cell speaker includes a voice coil for receiving an alternating signal from an amplifier. The voice coil is wound to a bobbin(134). The bobbin(134) does a straight-line motion peristaltically with the voice coil. A vibration rod(130) is connected to the other end of the bobbin(134). A vibration plate(120) is connected to the vibration rod(130). A magnet(142) forms a magnetic flux in the voice coil. A damper(138) is connected to a main side of the bobbin(134). The bobbin(134) is inserted into a center pole(146). A frame(150) is a body to which a magnetic circuit and the damper(138) are attached. The center pole(146), a york(144) and a plate(140), which are installed at a certain portion of the frame, are magnetized by the magnet(142) to induce a magnetic flux of the magnet(142) into a gap between the bobbin(134) and the plate(140).
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