To obtain a voice coil assembly capable of achieving a flat thin loudspeaker having a high efficiency, hardly causing divided vibrations, obtaining a flat frequency response, and hardly causing operation defects.
The voice coil assembly includes a structure in which two internal rectangular coils fixed on the inner wall surface of each of two rectangular spaces adjacent to each other with a partitioning surface as a boundary are connected so that an audio signal current can be conducted in the same direction in each of one side x1 of one internal rectangular coil v1 and one side x2 of the other internal rectangular coil v2 which follow the partitioning wall surface, wherein a thickness tb1 defining the thickness of the partitioning wall surface of a lattice-like bobbin is made thinner than a thickness tb2 defining the thickness of the other part of the internal wall surface, and is thinned to be not more than a total thickness tc0 of a thickness tc1 defining the thickness of the one side x1 of the one internal rectangular coil v1 and a thickness tc2 defining the thickness of the one side x2 of the internal rectangular coil v2.
| JP5042376 | Fully driven speaker |
| JP2002528019 | [Title of Invention] Loudspeaker |
| JP4901961 | Speaker device |
TEIKA KOICHI
KUMO HIROYASU
UJIMOTO YOSHINORI
ABE KOICHI
NAGAOKA SATOSHI
