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公开(公告)号：US20240097518A1
公开(公告)日：2024-03-21
申请号：US18274755
申请日：2021-12-20
Inventor： Hideki TAMURA , Mitsumasa MIZUNO , Yuya AKO , Kenji OKADA
CPC classification number: H02K3/38 , H02K3/345 , H02K15/022 , H02K15/026
Abstract: A stator includes a plurality of stator blocks aligned in a circumferential direction and a plurality of coils each made of a winding wound around a corresponding one of the plurality of stator blocks. The stator includes a plurality of insulation members electrically insulating from the plurality of stator blocks from the plurality of coils for respective groups of the plurality of stator blocks and the plurality of coils. Each of the plurality of stator blocks includes a yoke portion located at its outermost perimeter, a teeth portion protruding from an inner peripheral surface of the yoke portion, and an insulating portion being electrically insulating and covering a surface of the teeth portion. Each of the plurality of insulation members includes a pair of insulating plates. Each of the pair of insulating plates has a width greater than a width of the teeth portion, and the pair of insulating plates are arranged to face each other across the teeth portion.
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公开(公告)号：US20240079928A1
公开(公告)日：2024-03-07
申请号：US18272968
申请日：2021-01-27
Inventor： Mitsumasa MIZUNO , Kenji OKADA , Hideki TAMURA , Yuya AKO
IPC: H02K7/14 , H02K1/02 , H02K1/16 , H02K1/2706 , H02K1/28
CPC classification number: H02K7/14 , H02K1/02 , H02K1/16 , H02K1/2706 , H02K1/28
Abstract: An electric tool includes a motor. The motor includes a stator and a rotor. The rotor rotates with respect to the stator. At least one of the stator or the rotor includes a core (stator core or rotor core) that includes an oriented steel sheet.
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公开(公告)号：US20240128809A1
公开(公告)日：2024-04-18
申请号：US18277989
申请日：2021-12-20
Inventor： Yuya AKO , Hideki TAMURA , Mitsumasa MIZUNO , Kenji OKADA
IPC: H02K1/16 , H02K1/2706
CPC classification number: H02K1/165 , H02K1/2706
Abstract: A stator includes: a plurality of stator blocks; a plurality of coils; and a supporter supporting the plurality of stator blocks. Each of the plurality of stator blocks includes: a yoke portion located at its outermost perimeter; and a teeth portion protruding from an inner peripheral surface of the yoke portion. The yoke portion has a width dimension along the circumferential direction, and the width dimension of the yoke portion is greater than a width dimension of the teeth portion along the circumferential direction. The supporter is closed in the circumferential direction. The supporter holds the plurality of stator blocks such that the plurality of stator blocks are housed in an interior of the supporter. The supporter has an inner peripheral surface in contact with at least an outer peripheral surface of the yoke portion of each of the plurality of stator blocks.
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公开(公告)号：US20240097511A1
公开(公告)日：2024-03-21
申请号：US18274753
申请日：2021-12-20
Inventor： Hideki TAMURA , Kenji OKADA , Mitsumasa MIZUNO , Yuya AKO
Abstract: A stator includes a plurality of stator blocks aligned in a circumferential direction and a plurality of coils each made of a winding wound around a corresponding one of the plurality of stator blocks. The stator includes a plurality of insulation members electrically insulating from the plurality of stator blocks from the plurality of coils for respective groups of the plurality of stator blocks and the plurality of coils. Each of the plurality of stator blocks includes a yoke portion located at its outermost perimeter and a teeth portion protruding from an inner peripheral surface of the yoke portion. Each of the plurality of insulation members includes a pair of insulating plates arranged to face each other across the teeth portion. Each of the pair of insulating plates has a width greater than a width of the teeth portion.
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