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:
Apr. 06, 2010
Filed:
Feb. 10, 2004
Shun Kayama, Saitama, JP;
Yukiko Shimizu, Saitama, JP;
Toshinori Yamasue, Shiga, JP;
Hiroshi Azuma, Osaka, JP;
Hirokazu Kitamura, Kyoto, JP;
Shun Kayama, Saitama, JP;
Yukiko Shimizu, Saitama, JP;
Toshinori Yamasue, Shiga, JP;
Hiroshi Azuma, Osaka, JP;
Hirokazu Kitamura, Kyoto, JP;
Sony Corporation, Tokyo, JP;
Omron Corporation, Kyoto-shi, JP;
Abstract
The present invention is directed to a vibration generating device used for mobile telephone, etc., which comprises a rotor (), and a stator () for rotatably supporting the rotor, and serving to rotate the rotor to thereby generate vibration. The rotor comprises a bearing sleeve () consisting of resin molded material and rotatably attached to a fixed shaft () provided at the stator, a magnet () and a weight () positioned in eccentric state with respect to the bearing sleeve, wherein the bearing sleeve and the magnet are formed in the state where they are integrated by material resin of the bearing sleeve. The stator comprises, in addition to the fixed shaft, a bottom plate (), a cover plate () and a coil () disposed in a manner opposite to the magnet, whereby the coil is energized so that the rotor is rotated, and the bearing sleeve is rotated in the state in contact with the bottom plate or the cover plate by attractive force exerted between the magnet and the bottom plate or the cover plate.