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

Claim 2:
3. 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 from one side end of the first pole in a second direction perpendicular to the first direction, wherein the second pole has 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 from one side end of the third pole in the second direction, wherein the fourth pole has 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, wherein the sixth pole has an end face facing the axial line,
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 end face of the sixth pole.