| 摘要 |
A linear actuator includes a coil that generates a magnetic force upon energization thereof, a yoke covering an outer peripheral surface of the coil, a magnetic attraction core that generates an attractive magnetic force in an axial direction with the magnetic force generated by the coil, a plunger that is magnetically attracted to the magnetic attraction core, and a magnetic conduct core that conducts magnetic flux received from the yoke to the plunger in a radial direction. An outer peripheral surface of the plunger is configured to slide along an inner peripheral surface of the magnetic conduct core. The plunger has a distribution-adjusting recess, which is recessed in an outer peripheral surface of a portion of the plunger made of a magnetic material to adjust magnetic flux distribution of the magnetic flux along the plunger in the axial direction with respect to the magnetic conduct core.
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