发明名称 |
Linear motor and machine tool having the same mounted thereon |
摘要 |
The present invention provides a linear motor 1 that can prevent a magnet member 2 from falling down when a power supply is turned off. A linear motor 1 includes a magnet member 2 composed of permanent magnets having alternately arranged respective N poles and S poles and a coil member 3 which surrounds a periphery of the magnet member 2 and trough which the magnet member 2 is movable in an axial direction relative to the coil member 3 . A magnetic substance 3 is provided in the vicinity of one end of the coil member 3 to allow the magnet member 2 to exert a magnetic attractive force.
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申请公布号 |
US2008079522(A1) |
申请公布日期 |
2008.04.03 |
申请号 |
US20070902687 |
申请日期 |
2007.09.25 |
申请人 |
MURATA MACHINERY, LTD.;GMC HILLSTONE CO., LTD. |
发明人 |
OKADA TAKUYA;ISHIYAMA NORITAKA |
分类号 |
H01F7/122 |
主分类号 |
H01F7/122 |
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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