The invention relates to an electromagnetic converter, which uses a dual support structure of a few component structures to vibrate a vibrating plate piston, and obtains an electromagnetic converter with superior performance. The electromagnetic converter (10) comprises a magnetic circuit, having a permanent magnet (13a, 13b), the permanent magnet (13a, 13b) on one side of the pole face of the fixed side frame (12), an opening is formed in the pole side of the other party (11a) on the upper side of the frame (11) and, on the other side of the pole face fixed plate (14a, 14b); the vibration plate (15), in the direction of the side length (15b, 15C) and top face (15a) equipped with a voice coil pattern (15g). The projections (15I, 15J) link these lateral sections (15b, 15C). The periphery of the top face (15a) of the vibrating panel (15) is joined to the periphery of the opening (11a) of the upper frame (11) via the upper pad (16). In addition, the flange portion (15F) of the 4 side portions of the front side of the vibration plate (15) is joined to the inner circumferential surface of the upper frame (11) via the lower liner (18), i.e., the magnetic circuit.
【技术实现步骤摘要】
【技术保护点】
1. 一种电磁转换器,其中,具备:磁路,其包括:永久磁铁,对该永久磁铁的一方的磁极面进行固定并且另一方的磁极侧开口了的框体,以及固定于所述另一方的磁极面的板;振动板,其具有:位于覆盖所述板的位置的顶面部,以及从该顶面部向所述永久磁铁的方向形成的、位于所述板和所述框体开口之间的4个侧面部,在单面或两面形成有音圈图案;第1支承部,接合于所述振动板的顶面部周缘和所述框体开口周缘,对所述振动板以位移自由的方式进行保持;以及第2支承部,接合于所述振动板的侧面部前端侧周缘和所述框体内周面,对所述振动板以位移自由的方式进行保持。
【技术特征摘要】
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【专利技术属性】
技术研发人员:吉田俊治,
申请(专利权)人:三菱电机工程株式会社,
类型:发明
国别省市:JP
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