SPEAKER UNIT AND SPEAKER Russian patent published in 2023 - IPC H04R7/02 

FIELD: acoustics; loudspeakers.

SUBSTANCE: loudspeaker contains the first diaphragm in the form of a cone; a plate-shaped lobe section to which a second leaf-shaped diaphragm is attached, forming a rounded surface section that is curved from one end side to the other end side; and a drive unit that drives the cone diaphragm and lobe section together. The lobe section is connected through a central cap attached to the end face of the top of the voice coil of the excitation unit, in such a way that it expands from the small diameter side to the large diameter side of the first diaphragm. In the first diaphragm, the small diameter side is connected to the drive unit, and also the large diameter side is attached to the cone support frame. In addition, the second diaphragm is positioned such that one end face overlaps with one surface of the lobe portion.

EFFECT: increased efficiency and quality of an acoustic system with a curved diaphragm.

12 cl, 23 dwg