Electromagnetic actuator
OwnerYuichi Fujita, Norihiro Sakurakawainventors
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Abstract
An electromagnetic actuator includes a stator extending in a first direction, and a mover capable of moving in the first direction. The mover has a yoke, a housing, bolts, a main pole magnet disposed with a magnetic pole oriented in a direction perpendicular to the yoke, and an interpole magnet disposed with a magnetic pole oriented in a direction not perpendicular to the yoke. The main pole magnet and the interpole magnet are fixed to the yoke with an adhesive, the yoke and the housing are fastened using the bolts, and the number of the bolts on a projected area of the main pole magnet is less than the number of the bolts on a projected area of the interpole magnet.
Claims13
An electromagnetic actuator comprising:
- a stator extending in a first direction;
- and
- a mover configured to move in the first direction,
- wherein the mover includes a yoke, a housing, a main pole magnet and an interpole magnet,
- the main pole magnet is configured to orient a magnetic pole in a direction perpendicular to the yoke,
- the interpole magnet is configured to orient a magnetic pole in a direction not perpendicular to the yoke,
- the main pole magnet and the interpole magnet are fixed to the yoke with an adhesive,
- the yoke and the housing are fastened using a plurality of bolts,
- a first group of bolts of the plurality of bolts is provided on a projected area of the main pole magnet,
- a second group of bolts of the plurality of bolts is provided on a projected area of the interpole magnet, and
- the first group includes fewer bolts than the second group.
An electromagnetic actuator comprising:
- a stator extending in a longitudinal direction;
- and
- a mover configured to move in the longitudinal direction, wherein:
- the mover includes a yoke, a housing, a main pole magnet and an interpole magnet,
- a plurality of bolts that fasten the yoke and the housing are divided in a first group and a second group,
- the first group is provided on a projected area of the main pole magnet,
- the second group is provided on a projected area of the interpole magnet, and
- the second group includes a greater number of bolts than the first group.
Dependencies are inferred from the claim text.