YOKE FOR VOICE COIL MOTOR AND VOICE COIL MOTOR

To provide a yoke for a voice coil motor capable of stabilizing a natural oscillation frequency of a voice coil motor and also easily mass-producing voice coil motors and a voice coil motor.SOLUTION: A yoke 1 for a voice coil motor has, inside a bonding region 2c of substantially the same shape as t...

Full description

Saved in:
Bibliographic Details
Main Authors TAMAMURA TAKUYA, WATARAI KEISUKE, KANEKO MASAKI
Format Patent
LanguageEnglish
Japanese
Published 18.05.2023
Subjects
Online AccessGet full text

Cover

Loading…
More Information
Summary:To provide a yoke for a voice coil motor capable of stabilizing a natural oscillation frequency of a voice coil motor and also easily mass-producing voice coil motors and a voice coil motor.SOLUTION: A yoke 1 for a voice coil motor has, inside a bonding region 2c of substantially the same shape as the outline of a magnet to be bonded, an annular groove 4 when the bonding region 2c is defined on a magnet bonding surface 1s of the yoke 1, and a region surrounded with the annular groove 4 on the magnet bonding surface 1s is a bonding agent application region 5. The voice coil motor includes: a pair of yokes 1 for the voice coil motor; a bonding agent applied to respective bonding agent application regions 5 of the pair of yokes; and a pair of rare earth magnets bonded to the respective bonding regions 2c of the pair of yokes with the bonding agent.SELECTED DRAWING: Figure 6 【課題】 ボイスコイルモータの固有振動周波数を安定化させるとともに、容易にボイスコイルモータを大量生産することが出来るボイスコイルモータ用ヨーク及びボイスコイルモータを提供する。【解決手段】 ボイスコイルモータ用ヨーク1は、ヨーク1の磁石接着面1sに、接着される磁石の輪郭と略同一形状の接着領域2cを規定したとき、接着領域2cの内側に、環状の溝4を有するとともに、磁石接着面1sにおける環状の溝4で取り囲まれた領域が、接着剤塗布領域5である。ボイスコイルモータは、このボイスコイルモータ用ヨーク1を一対と、一対のヨークのそれぞれの接着剤塗布領域5に塗布された接着剤と、一対のヨークのそれぞれの接着領域2cに接着剤を介して接着された一対の希土類磁石とを備える。【選択図】 図6
Bibliography:Application Number: JP20210181895