Linear actuator
AssigneeKYB Corporation
InventorKousuke SATOU
Life of this patent
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Abstract
A linear actuator includes: a first tube provided with coils placed there inside, the coils being held by a yoke; a rod configured to be movable in the yoke in an axial direction; and permanent magnets that are held by the rod while being lined up in the axial direction so as to oppose the coils. The first tube includes an inner tube and a base portion. The inner tube has a restriction portion projecting radially inward at one end thereof. The base portion is coupled to the other end of the inner tube. The yoke is inserted into the inner tube, and fixedly held between the restriction portion and the base portion.
Claims6
A linear actuator, comprising:
- a first tube provided with a plurality of coils placed there inside, the plurality of coils being held by a tubular yoke;
- a rod configured to be movable in the yoke in an axial direction;
- and
- a plurality of permanent magnets held by the rod while being lined up in the axial direction, the plurality of permanent magnets being arranged so as to oppose the plurality of coils,
- wherein
- the first tube includes:
- a tube portion that has a restriction portion projecting radially inward at one end thereof;
- and a base portion that is coupled to the other end of the tube portion, and
- the yoke is inserted into the tube portion, and fixedly held between the restriction portion and the base portion.
Dependencies are inferred from the claim text.