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. 16, 2003
Filed:
Sep. 27, 2002
Samsung Electro-Mechanics Co., Ltd., Kyungki-Do, KR;
Abstract
A flat type vibration motor provides a weight on a round shaped upper substrate and a portion corresponding to a winding coil arranged at one side of the upper substrate to prevent the eccentric amount from being reduced due to a slim thickness of a rotor, thereby facilitating a slim size of the motor. The flat type vibration motor includes: a lower case; an upper case which covers an upper portion of the lower case; a shaft which connects the center of the lower case with the center of the upper case and supports them; a lower substrate attached to one portion on an upper side of the lower case; a magnet attached to the lower substrate and the upper side of the lower case; a round shaped thin upper substrate rotatably supported in the shaft; a commutator provided with a plurality of segments on the circumference of the center of the shaft at the bottom of the upper substrate; a pair of brushes of which one end is fixed to the lower substrate and other end is in contact with the commutator to be electrically connected with the commutator; a pair of winding coils arranged separated from each other at a constant angle toward one side of the upper substrate; a weight of high specific gravity arranged toward the other end of the upper substrate corresponding to the winding coil; and an insulator of resin filled between the winding coils and the weight, for firmly fixing the winding coils and the weight to the upper substrate.