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:
Feb. 08, 2005
Filed:
May. 21, 2003
Hideki Itaya, Matsudo, JP;
Kunio Hiromasa, Matsudo, JP;
Mitsuo Fujimoto, Matsudo, JP;
Mabuchi Motor Co., Ltd., Chiba, JP;
Abstract
A turntable-integrated spindle motor according to the present invention is constituted by a stator and a rotor. The rotor is constituted by a shaftsupported in a bearing in a cantilever support manner, a metallic rotor casefixed to the shaftby a boss, and a magnetfixed to an inner circumferential surface of the rotor case. A plurality of projectionsare formed integrally with the metallic rotor case so as to project from the side surface of the metallic rotor case, the projections being arranged along one circumferential line. The projectionsperform a coming-off-prevention function by engaging with an engaging portion of a chassis. The rotor casealso functions as a turntable. In the present invention, the motor and the turntable are combined integrally with each other to obtain improved characteristics as well as to reduce the overall height. Also, projections for preventing coming off are formed integrally with the metallic rotor case to ensure high strength of the projections.