Actuator having heat radiation member
AssigneeAzbil Corporation
InventorShigeru Kawase
Life of this patent
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Abstract
An actuator (202) includes a stick-shaped center yoke (1) inserted through a cylindrical outer yoke (10), a support member that supports the outer yoke (10) such that the outer yoke (10) is linearly movable in an axial direction of the center yoke (1), a first coil (2), a second coil (3), and a third coil (4) wound around the center yoke (1), a first magnet array (11) and a second magnet array (12) disposed on an inner periphery of the outer yoke (10) in such a manner as to face the first coil (2), the second coil (3), and the third coil (4), a flat base plate (13) disposed at a first end portion of the center yoke (1), and a heat radiation member touching the base plate (13).
Claims11
An actuator, comprising:
- a stick-shaped inner yoke inserted through a cylindrical outer yoke;
- a support member that supports the outer yoke such that the outer yoke is linearly movable in an axial direction of the inner yoke;
- a coil wound around the inner yoke;
- a magnet disposed on an inner periphery of the outer yoke in such a manner as to face the coil;
- a flat base plate disposed at a first end portion of the inner yoke;
- and
- a heat radiation member directly touching the base plate and extending beyond the base plate in the axial direction away from the first end portion of the inner yoke so that the inner yoke, the base plate, and the heat radiation member are arranged in that order in the axial direction.
Dependencies are inferred from the claim text.