Patent ID: 8111868
Filing Date: 2012-02-07
Classification: H04R

Abstract:
1. A speaker device comprising a drive cone and a diaphragm integrally driven by a voice coil movably disposed in a magnetic gap and in which peripheral edge portions of the drive cone and the diaphragm are supported by a frame via different edge portions, the speaker device characterized in that the drive cone comprises: a rising-up portion which rises up toward an acoustic radiation direction from an inner circumferential end of the drive cone, and a rising-down portion which reversely rises down toward a direction reverse to the acoustic radiation direction outward of the rising-up portion and away from the inner circumferential end of the drive cone, wherein the rising-up portion and the rising-down portion form a continuous line; and an inner circumferential end of the diaphragm is fixed to the drive cone at a top formed between the rising-up portion and the rising-down portion of the drive cone, and further, a first rib and a second rib outside of the first rib are formed integrally with the rising-down portion of the drive cone toward the acoustic radiation direction, a back side of the diaphragm being secured at each of tips of the first rib and the second rib.