US 12,289,015 B2
Motor armature structure and motor armature manufacturing method
Manabu Horiuchi, Tokyo (JP); Shintarou Koichi, Tokyo (JP); and Yasushi Misawa, Tokyo (JP)
Assigned to SANYO DENKI CO., LTD., Tokyo (JP)
Filed by SANYO DENKI CO., LTD., Tokyo (JP)
Filed on Feb. 8, 2022, as Appl. No. 17/667,227.
Claims priority of application No. 2021-026178 (JP), filed on Feb. 22, 2021.
Prior Publication US 2022/0271578 A1, Aug. 25, 2022
Int. Cl. H02K 1/16 (2006.01); H02K 1/14 (2006.01); H02K 15/02 (2025.01)
CPC H02K 1/16 (2013.01) [H02K 1/148 (2013.01); H02K 15/024 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A motor armature structure comprising an armature including:
a plurality of winding bodies, each of the plurality of winding bodies including a wire wound around an air core where a respective one of a plurality of winding cores is positioned, each of the plurality of winding bodies being formed as an integral block;
an armature core having the plurality of winding cores; and
a structure framework,
wherein the structure framework includes a plurality of positioning portions, each extending along a direction of the axis of rotation of the armature and having at least one boundary portion as an insulating member, said at least one boundary portion protruding outwardly in a direction opposite to the direction of an axis of the motor;
wherein the plurality of winding bodies are held by the plurality of positioning portions, respectively, such that the adjacent winding bodies are separated from each other by the at least one boundary portion in between the adjacent winding bodies and at least a part of a bottom surface of each of the adjacent winding bodies is in contact with a positioning surface of one of the positioning portions and at least a part of a side surface of each of the adjacent winding bodies is in contact with the at least one boundary portion;
wherein the armature core includes a molded magnetic material admixture that integrates the plurality of winding bodies and the structure framework;
wherein the plurality of winding bodies and the structure framework both are molded by the magnetic material admixture;
wherein the plurality of winding bodies includes first and second winding bodies;
wherein the plurality of positioning portions includes first, second and third positioning portions;
wherein the first winding body is in contact with the first and second positioning portions and held by the first and second positioning portions; and
wherein the second winding body is in contact with the second and third positioning portions and held by the second and third positioning portions.