SPEAKER, HEARING AID, INNER EAR HEADPHONE, MOBILE INFORMATION PROCESSING DEVICE, AND AV DEVICE,申请号EP20110768631-传众专利搜索

SPEAKER, HEARING AID, INNER EAR HEADPHONE, MOBILE INFORMATION PROCESSING DEVICE, AND AV DEVICE

申请公布号：EP2560409(A1)

申请号：EP20110768631

申请日期：2011.04.13

申请公布日期：2013.02.20

申请人：

PANASONIC CORPORATION

发明人：SAKAGUCHI, ATSUSHI;SAIKI, SHUJI;MATSUMURA, TOSHIYUKI

分类号：H04R7/24;H04R1/10;H04R1/22;H04R1/40;H04R7/18;H04R7/20;H04R7/22;H04R9/02;H04R25/00

主分类号：H04R7/24

摘要：<p>A speaker (110) including: a chassis (111) internally including a magnet (11); a plate (12) attached to a top face of the magnet (11); a voice coil (15) disposed in a magnetic air gap (14) formed in an outer perimeter of the plate (12) so as to be vibratable in a vertical direction; a diaphragm (16) having a periphery (16b) that is connected to an upper end of the voice coil (15); and a suspension (17) connecting the diaphragm (16) and the chassis (111). The suspension (17) includes a first fixing part (21) fixed to the diaphragm (16) and a second fixing part (22) fixed to the chassis (111). The second fixing part (22) is positioned above the first fixing part (21), and at least one of the first fixing part (21) and the second fixing part (22) is disposed in an inner region (D1) which is a region located inward of the periphery (16b) of the diaphragm (16) as seen from above.</p>