Patent ID: 11909336
Assignee: UNIVERSITY INDUSTRY FOUNDATION, YONSEI UNIVERSITY
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 9:
10. An actuator comprising:
at least two iron cores, each iron core including a pole extending in a first direction parallel to a direction of gravity;
a permanent magnet disposed between the at least two iron cores so as to generate a magnetic field along a shape of a combination of the at least two iron cores arranged so as to be adjacent to each other in a direction not parallel to the first direction; and
a winding wound around the pole of each of the at least two iron cores,
wherein the at least two iron cores include:
a first iron core disposed at a first azimuth around an imaginary axial line parallel to the first direction, wherein the first iron core includes a first pole extending in the first direction, and a second pole extending in a second direction perpendicular to the first direction from one side end of the first pole and having an end face facing the axial line;
a second iron core disposed at a second azimuth around the axial line, wherein the second iron core includes a third pole extending in a parallel manner to the extension direction of the first pole, and a fourth pole extending in the second direction from one side end of the third pole and having an end face facing the axial line; and
a third iron core disposed at a third azimuth around the axial line, wherein the third iron core includes a fifth pole extending in a parallel manner to the extension direction of the first pole, and a sixth pole extending from one side end of the fifth pole in the second direction and having an end face facing the axial line,
wherein the actuator further comprises a central iron core in contact with the first to third permanent magnets and disposed under the first to third permanent magnets, wherein the central iron core extends in a parallel manner to the first direction,
wherein the winding includes:
a first winding wound around the first pole;
a second winding wound around the third pole; and
a third winding wound around the fifth pole,
wherein the permanent magnet includes:
a first permanent magnet fixed to the end face of the second pole so that a magnetic flux thereof is directed toward the axial line;
a second permanent magnet fixed to the end face of the fourth pole so that a magnetic flux thereof is directed toward the axial line; and
a third permanent magnet fixed to the end face of the sixth pole so that a magnetic flux thereof is directed toward the axial line.