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

Claim 12:
13. 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 including 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;
a second iron core including a third pole extending in a parallel manner to the extension direction of the first pole, and a fourth pole extending in a parallel manner to the extension direction of the second pole from one side end of the third pole and having an end face facing an end face of the second pole;
a third iron core including a fifth pole extending in a parallel manner to the extension direction of the first pole, and a sixth pole extending in the second direction from one side end of the fifth pole, wherein the third iron core is adjacent to the first iron core and the second iron core such that an angle defined between an end face of the sixth pole and each of the end face of the second pole and the end face of the fourth pole is a right angle; and
a fourth iron core including a seventh pole extending in a parallel manner to the extension direction of the first pole, and an eighth pole extending in a parallel manner to the extension direction of the sixth pole from one side end of the seventh pole and having an end face facing the end face of the sixth pole,
wherein the actuator further comprises a central iron core contacting the second pole, the fourth pole, the sixth pole and the eighth pole and disposed under the end faces of the second pole, the fourth pole, the sixth pole and the eighth pole, 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;
a third winding wound around the fifth pole; and
a fourth winding wound around the seventh pole,
wherein the permanent magnet is fixed to a bottom face of the central iron core such that a magnetic flux thereof is directed away from the bottom face of the central iron core.