Onkyo Corporation

Satofumi Nagaoka

Koichi Sadaie

Hiroyasu Kumo

Yoshihide Toyoshima

Yoshinori Ujimoto

Kouichi Abe

A voice coil assembly capable of realizing a flat thin loudspeaker having a high efficiency, reduced divided vibrations, a flat frequency response, and reduced operation defects. The voice coil assembly includes a plurality of internal-winding voice coils, each including a rectangular bobbin having a rectangular cross section and defining a rectangular space therein and an internal rectangular coil fixed to an inner wall surface of the rectangular bobbin defining the rectangular space, wherein an outer wall surface of the rectangular bobbin of one internal-winding voice coil is adhered and fixed to an outer wall surface of the rectangular bobbin of another internal-winding voice coil.

Voice coil assembly, loudspeaker using the same, and method for producing the same

An electrodynamic loudspeakerincludes a magnetic circuitand a vibrator. The magnetic circuitincludes a magnetand polesandadhering to the magnet. The vibratorincludes a coil bobbinand voice coilsandwound around and fixed to a portion of the coil bobbinfacing the polesand. A magnetic memberis fixed to the coil bobbinof the vibratorat a position spaced apart from the voice coilsand. The magnetic memberis fixed at a position on the coil bobbinso as to extend over an area facing the magnetof the magnetic circuit

Growing community of inventors

Neyagawa, Japan

Satofumi Nagaoka