| US 7,576,452 B2 | ||
| Coreless linear motor and canned linear motor | ||
| Toru Shikayama, Fukuoka (Japan); and Kenichi Sadakane, Fukuoka (Japan) | ||
| Assigned to Kabushiki Kaisha Yaskawa Denki, Fukuoka (Japan) | ||
| Appl. No. 10/586,239 PCT Filed Jan. 11, 2005, PCT No. PCT/JP2005/000177 § 371(c)(1), (2), (4) Date Jul. 17, 2006, PCT Pub. No. WO2005/069467, PCT Pub. Date Jul. 28, 2005. |
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| Claims priority of application No. 2004-011942 (JP), filed on Jan. 20, 2004. | ||
| Prior Publication US 2007/0152513 A1, Jul. 05, 2007 | ||
| Int. Cl. H02K 41/00 (2006.01) | ||
| U.S. Cl. 310—12 | 4 Claims |
| 1. A coreless linear motor comprising:
a magnetic field system that includes a plurality of permanent magnets arranged in line, polarities of the adjacent permanent
magnets being different from each other; and
armatures that are disposed to face the rows of the permanent magnets through a magnetic gap and have coreless-type armature
coils formed of a plurality of coil groups arranged, wherein
when one of the magnetic field system and the armatures serves as a stator and the other serves as a movable member, the magnetic
field system and the armatures relatively move,
the magnetic field system is constructed so that two magnet rows of permanent magnets face each other,
the armatures are disposed so that two rows of armature coils are arranged between the two rows of magnets in the magnetic
field system,
at least one end of the two rows of armature coils in the direction perpendicular to the direction of a magnetic gap between
the rows of magnet branches into two parts and a substrate for connecting the coils is inserted into the gap between the branching
parts,
the two rows of armature coils being attached to each other without the substrate being present in between the coils at portions
other than at said at least one end,
the armature coils and the substrate are fixed by mold resin, and
the permanent magnet takes the profile of the armature.
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