Patent ID: 8542864
Filing Date: 2013-09-24
Classification: H04R

Abstract:
1. A speaker device comprising: a magnetic circuit forming a magnetic gap; a voice coil unit disposed in said magnetic gap; and a diaphragm linked to the voice coil unit; said magnetic circuit further forming two facing magnetic gaps; and said voice coil unit further having a first voice coil portion comprising a first voice coil line pattern on the surface of a flat flexible material and disposed in one of the magnetic gaps; a second voice coil portion comprising a second voice coil line pattern on the surface of a flat flexible material and disposed in the other of the magnetic gaps so that the second voice coil portion is opposed to the first voice coil portion; a first-first supporting unit and a second-first supporting unit which is formed extending from edge portions of said first voice coil portion of said flat flexible material, and which elastically support said first voice coil portion; a first-second supporting unit and a second-second supporting unit which is formed extending from edge portions of said second voice coil portion of said flat flexible material, and which elastically support said second voice coil portion; wherein an edge portion of each of said first-first supporting unit and said second-first supporting unit on a side opposite from said first voice coil portion is fixed to a fixing position so as to enable vibration of said first voice coil portion in one of the magnetic gaps in the direction of the face thereof; wherein an edge portion of each of said first-second supporting unit and said second-second supporting unit on a side opposite from said second voice coil portion is fixed to a fixing position so as to enable vibration of said second voice coil portion in the other of the magnetic gaps in the direction of the face thereof; wherein each of said first-first supporting unit and said second-first supporting unit elastically supports said first voice coil unit in a bent shape that extends up from said end portion fixed to said fixing position and bends down so that each supporting unit is bent in a semi-circle or reverse U-shape; wherein each of said first-second supporting unit and said second-second supporting unit elastically supports said second voice coil unit in a bent shape that extends up from said end portion fixed to said fixing position and bends down so that each supporting unit is bent in a semi-circle or reverse U-shape; wherein each of said first-first supporting unit and said second-first supporting unit, each of said first-second supporting unit and said second-second supporting unit, and each of said fixing positions are disposed respectively between the first voice coil portion and the second voice coil portion; and wherein said supporting units are not a damper of the diaphragm.