Invention Grant
- Patent Title: Vibration generator
- Patent Title (中): 振动发生器
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Application No.: US12867961Application Date: 2009-02-04
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Publication No.: US08174345B2Publication Date: 2012-05-08
- Inventor: Masaharu Kagami , Kazutaka Sakaguchi , Yuki Takahashi , Shigenori Inamoto
- Applicant: Masaharu Kagami , Kazutaka Sakaguchi , Yuki Takahashi , Shigenori Inamoto
- Applicant Address: JP Tokyo
- Assignee: Mitsumi Electric Co., Ltd.
- Current Assignee: Mitsumi Electric Co., Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Holtz, Holtz, Goodman & Chick, P.C.
- Priority: JP2008-038745 20080220
- International Application: PCT/JP2009/051895 WO 20090204
- International Announcement: WO2009/104476 WO 20090827
- Main IPC: H01F7/10
- IPC: H01F7/10

Abstract:
A vibration generator 1 has an attachment structure of a spring by which the attachment error of the spring elastically supporting a mover composed of a magnet and a yoke does not become the error of the span of the spring to make it possible to improve the ease and yield of manufacture. The vibration generator 1 includes a mover which is composed of a magnet 5 and yokes 4, 7a and 7b, and a spring 6 which is composed of an integrally molded article made of an elastomeric material and elastically supports the mover to allow the mover to vibrate in the central axis direction C. The spring is arranged on the outside of a coil 3 in a radial direction thereof and extends along the radial direction. An outer end portion 6a in the radial direction is nipped by two parts 2 and 8 in the central axis direction to be fixed to the housings 2 and 8, and an inner end portion 6b in the radial direction is nipped by two parts 7a and 7b constituting the outer circumferential part of the yoke in the central axis direction to be fixed to the outer circumferential part of the yoke. The outer end portion and the inner end portion have projecting parts formed to project from an elastic deformation section 6c, connecting the outer end portion and the inner end portion to each other, into two directions along the central axis.
Public/Granted literature
- US20100315185A1 VIBRATION GENERATOR Public/Granted day:2010-12-16
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