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1. 发明申请

US20100128891A1 REPULSION-TYPE MAGNETIC CIRCUIT AND SPEAKER DEVICE 审中-公开
标题翻译：复制型磁电路和扬声器装置
公开(公告)号：US20100128891A1
公开(公告)日：2010-05-27
申请号：US12596928
申请日：2007-04-24
申请人： Hayami Kondo , Koji Matsumoto , Yoshimi Kudo , Hiroyuki Dohi
发明人： Hayami Kondo , Koji Matsumoto , Yoshimi Kudo , Hiroyuki Dohi
IPC分类号： H04R1/02 , H01F7/02 , H04R9/06
CPC分类号： H04R9/022 , H04R9/025 , H04R9/06
摘要： A repulsive-type magnetic circuit prevents deterioration of magnetic characteristic of magnets due to heat accumulation, and includes: a magnet and plural magnets arranged such that matching poles of the magnet and each of the plural magnets confront each other; a yoke; a pole piece; and a top plate. The pole piece is above the yoke. The top plate is above the pole piece. The magnet is between the yoke and the pole piece. The plural magnets are arranged between the pole piece and top plate. Joule heat generated by the voice coil is hardly propagated, as radiant heat, to one of the plural magnets on the side near the top plate. Accordingly, the temperature of the magnet on the top plate side hardly rises even if radiant heat continuously propagates to the pole piece. This prevents demagnetization of each of the plural magnets, and deterioration of the magnetic characteristics thereof.
摘要翻译：排斥型磁路防止由于热积聚导致的磁体的磁特性的劣化，并且包括：磁体和多个磁体，其布置成使得磁体和多个磁体中的每一个的匹配磁极彼此面对; 一个轭极片和顶板。极片在轭之上。顶板位于极片之上。磁体位于磁轭和极片之间。多个磁铁布置在极片和顶板之间。由音圈产生的焦耳热几乎不会作为辐射热传播到靠近顶板的一侧的多个磁体之一。因此，即使辐射热连续地传播到极靴，顶板侧的磁体的温度也难以上升。这防止了多个磁体中的每个磁体的退磁和其磁特性的劣化。

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