Speaker device
AssigneeAlpine Electronics, Inc.
InventorKei Tanabe
Life of this patent
Estimating the term…
Abstract
A speaker device includes a voice coil unit and a diaphragm linked to the voice coil unit. A first supporting unit and a second supporting unit elastically support the end portions of the voice coil unit so that the voice coil portion of the voice coil unit can vibrate within the magnetic gap in the direction of the face thereof. Each of the first supporting unit and the second supporting unit has a configuration that is in a shape bent so as to extend up and bend down from an end that is fixed to a fixing position. Thus, a speaker device in which the voice coil unit can vibrate with a greater amplitude is provided.
Claims10
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.
Dependencies are inferred from the claim text.