公开(公告)号：US20040017920A1

公开(公告)日：2004-01-29

申请号：US10452279

申请日：2003-06-03

Applicant: FUJITSU TEN LIMITED ,  TIMEDOMAIN CORPORATION

Inventor： Akira Nishikawa ,  Akira Motojima ,  Hiroyuki Yoshii

IPC: H04R001/02 ,  H04R009/06

CPC classification number: H04R1/227 ,  H04R2201/021 ,  H04R2209/027 ,  H04R2499/13

Abstract: A speaker device has a pair of speaker units each including a magnetic circuit. The magnetic circuits are opposed and connected to each other by a binding member. Vibrations generated by the speaker units are canceled to each other so that the occurrence of unnecessary vibrations can be suppressed and the transient characteristic can be improved. Acoustic load members are arranged in the front portions of frames so that the resonance frequency can be lowered and a band of reproducing sound of low frequency can be expanded.

Abstract translation: 扬声器装置具有一对扬声器单元，每个扬声器单元包括磁路。 磁路相互连接并通过装订构件相互连接。 由扬声器单元产生的振动彼此抵消，从而可以抑制不必要的振动的发生，并且可以提高瞬态特性。 声负载构件布置在框架的前部，使得可以降低谐振频率，并且可以扩大低频率的再现声频带。

公开(公告)号：US20030047378A1

公开(公告)日：2003-03-13

申请号：US10266626

申请日：2002-10-09

Applicant: Timedomain Corporation,

Inventor： Hiroyuki Yoshii ,  Haruhiko Imamura

IPC: A47B081/06

CPC classification number: H04R1/345 ,  H04R1/34

Abstract: In a speaker apparatus equipped with a speaker unit including a magnet, a frame and a diaphragm, a speaker housing has a substantially cylindrical shape, and also has such a structure that the speaker unit is secured onto one end surface of the cylindrical shape of the speaker housing so as to substantially cover the speaker unit except for front and back surfaces of the diaphragm. Further, the speaker housing has an opening in another end surface of the cylindrical shape thereof. A support bar extends and has one end secured to a back surface of the magnet of the speaker unit. Furthermore, a weight is secured to another end of the support bar, and then, the weight holds the support bar in a substantially vertical direction and grounds the magnet acoustically and virtually, thereby attenuating and suppressing oscillation transmitted from the magnet to the support bar.