The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 01, 2009
Filed:
Jun. 22, 2005
Kazuki Honda, Osaka, JP;
Koji Sano, Osaka, JP;
Kazuya Yamasaki, Osaka, JP;
Kazutaka Kubo, Osaka, JP;
Masahide Sumiyama, Osaka, JP;
Kazuki Honda, Osaka, JP;
Koji Sano, Osaka, JP;
Kazuya Yamasaki, Osaka, JP;
Kazutaka Kubo, Osaka, JP;
Masahide Sumiyama, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
In an electro-acoustic converter, a frame is bonded to the magnetic circuit, and the diaphragm is bonded to a circumferential edge of the frame. The voice coil is attached to the diaphragm and a part thereof is located in a magnetic gap of the magnetic circuit. The terminal is made of a sheet metal having spring property and electrical conductivity, and a part thereof is fixed to the frame. The terminal has a bent portion and a contact portion, and is electrically connected to the voice coil. The stopper is provided around a portion of the terminal at one side nearer to the frame than the bent portion, and protrudes from a surface of the frame where the contact portion of the terminal protrudes. The stopper restricts bending of the terminal to an extent within a threshold value of reversibility of a material the sheet metal.