Speaker device,申请号EP20060026343-传众专利搜索

Speaker device

申请公布号：EP1802166(A2)

申请号：EP20060026343

申请日期：2006.12.19

申请公布日期：2007.06.27

申请人：

PIONEER CORPORATION;TOHOKU PIONEER CORPORATION

发明人：TAKAYAMA, KOJI;YUSE, KAZUKI;KOBAYASHI, HIROYUKI;HAYASAKA, SHINICHI

分类号：H04R9/02

主分类号：H04R9/02

摘要：<p>It is an object of the present invention to provide an improved speaker device equipped with a long plate, capable of realizing a high flux density within the magnetic gap without forming any un-useful space. The speaker device (100) has a magnetic circuit (102) including a yoke (3) integrally formed with a center pole (1) and a bottom yoke (2); an annular magnet (4); and an annular top plate (5). A voice coil (7) wound around a voice coil bobbin (6) fixed with a diaphragm (10) is freely vibratably supported in the axial direction of the center pole (1) within the magnetic gap g formed between the center pole (1) and the yoke (3). Moreover, the speaker device (100) has a first magnet (41) having a first inner diameter (r411) and disposed on the bottom yoke (2), and a second magnet (42) having a second inner diameter (r421) larger than the first inner diameter (r411) and disposed on the first magnet (41) . The top plate (5) has a radial direction rectangular section portion (501), and a cylindrical bent portion (502) facing between the inner circumferential surface (42c) of the second magnet (42) and the center pole (1).</p>