公开(公告)号：US20030086584A1

公开(公告)日：2003-05-08

申请号：US10282082

申请日：2002-10-29

Applicant: STAR MICRONICS CO., LTD.

Inventor： Mitsuhiro Masuda ,  Yoshiharu Oishi ,  Kazushi Suzuki ,  Harunobu Tsuchiya

IPC: H04R001/00 ,  H04R009/06 ,  H04R011/02

CPC classification number: H04R13/00

Abstract: A core having a coil wound thereon is fixed to a base at the bottom. The base is fixed to a case made of synthetic resin by insert molding. A diaphragm is fixed to the case in circumference, and also a magnetic flux guide member is fixed to the case in circumference. Since the diaphragm and the magnetic flux guide member is commonly fixed to the case, no variation in the distance between the diaphragm and the magnetic flux guide member would occur for every product. Further, a gap L is formed between the magnet and the magnetic flux guide member, and an air hole is formed in the magnetic flux guide member. This improves the passage of air and reduces air dumper effect without modifying the magnet in shape.

Abstract translation: 卷绕在其上的线圈的芯部固定在底部的基部。 基座通过嵌件成型固定在由合成树脂制成的壳体上。 圆周上将隔膜固定在壳体上，并且磁通引导构件也在周围固定在壳体上。 由于隔膜和磁通引导构件通常固定在壳体上，所以每个产品不会发生隔膜与磁导引构件之间的距离的变化。 此外，在磁体和磁通引导构件之间形成间隙L，并且在磁通引导构件中形成空气孔。 这样可以改善空气通过并减少空气排放效应，而不会改变磁体的形状。