发明名称 |
CORELESS MOTOR, CORELESS VIBRATING MOTOR, AND MOBILE TERMINAL DEVICE |
摘要 |
<P>PROBLEM TO BE SOLVED: To provide a coreless motor that prevents reduction in density of a magnetic flux acting on a coil body even when the height of the coreless motor fixed to a substrate is small, and to provide a coreless vibrating motor and a mobile terminal device. <P>SOLUTION: A coreless motor 3 according to the invention includes: a cylindrical coil body 11 that rotates integrally with a rotating shaft 5; and a cylindrical magnet 15 that is provided between the coil body 11 and the rotating shaft 5 and has circumferentially arranged magnetic poles. A housing 9 has a flat surface portion 27 on an outer peripheral surface and a cylindrical inner peripheral surface. In the magnet 15, regions 39 with a highest magnetic flux density are arranged so as to face portions of the housing 9 excluding the flat surface portion 27. A wall thickness M2 of the flat surface portion 27 of the housing 9 is smaller than a wall thickness M1 of each of portions 25a and 25b which the regions 39 with the highest magnetic flux density respectively face. <P>COPYRIGHT: (C)2012,JPO&INPIT |
申请公布号 |
JP2012005222(A) |
申请公布日期 |
2012.01.05 |
申请号 |
JP20100137093 |
申请日期 |
2010.06.16 |
申请人 |
SHICOH ENGINEERING CO LTD |
发明人 |
SHIRAKI MANABU;CHANG HYO-YANG |
分类号 |
H02K5/08 |
主分类号 |
H02K5/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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