Invention Grant
- Patent Title: Vibration motor
- Patent Title (中): 振动电机
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Application No.: US12385290Application Date: 2009-04-03
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Publication No.: US07990002B2Publication Date: 2011-08-02
- Inventor: Masaaki Matsubara
- Applicant: Masaaki Matsubara
- Applicant Address: JP Meguro-Ku, Tokyo
- Assignee: Minebea Motor Manufacturing Corporation
- Current Assignee: Minebea Motor Manufacturing Corporation
- Current Assignee Address: JP Meguro-Ku, Tokyo
- Agency: McGinn IP Law, PLLC
- Priority: JP2008-097667 20080404
- Main IPC: H02K7/06
- IPC: H02K7/06 ; H02K5/00 ; H02K7/00 ; H02K1/00

Abstract:
A vibration motor includes a rotary shaft, an armature core secured to the rotary shaft and having a plurality of salient poles, an armature coil wound around each of the salient poles except at least one salient pole, a frame serving as an outside cover, a plurality of magnets secured to the frame and having respective different polarities, and a weight adapted to rotate together with the rotary shaft and disposed eccentrically, wherein the weight is disposed inside the frame and secured to the armature core in such a manner that at least a part of the weight is inserted in a hollow provided in at least the one salient pole having no armature coil.
Public/Granted literature
- US20090251017A1 Vibration motor Public/Granted day:2009-10-08
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