公开(公告)号：US20190036426A1

公开(公告)日：2019-01-31

申请号：US16148177

申请日：2018-10-01

Applicant: NIDEC CORPORATION

Inventor： Tomoyuki UMEDA ,  Takayuki MIGITA

IPC: H02K11/40 ,  H02K1/18 ,  H02K1/32 ,  H02K3/52 ,  H02K5/173 ,  H02K5/22 ,  H02K7/08 ,  H02K7/14 ,  H02K11/30 ,  H02K21/16 ,  F04D19/00 ,  F04D29/18

Abstract: A motor may include a rotor rotating on a central axis; a stator located radially outside the rotor; a bearing supporting the rotor such that the rotor is rotatable with respect to the stator; and a holder that holds the stator. The stator may include a stator core; and a coil. The holder may include a cover disposed on an axially first side of the coil; and a bracket that is electrically connected to and fixed to the cover, is disposed on an axially second side of the coil, and is connectable to a ground. The holder may have an opening that penetrates the holder in a radial direction and is located between the axially first-side end of the coil and the cover, and an opening that penetrates the holder in the radial direction and is located between the axially second-side end of the coil and the bracket.

公开(公告)号：US20190036403A1

公开(公告)日：2019-01-31

申请号：US16148191

申请日：2018-10-01

Applicant: NIDEC CORPORATION

Inventor： Tomoyuki UMEDA ,  Takayuki MIGITA

IPC: H02K1/28 ,  H02K1/32 ,  H02K5/173 ,  H02K5/22 ,  H02K7/08 ,  H02K7/14 ,  H02K11/30 ,  H02K21/16 ,  F04D19/00 ,  F04D29/18

Abstract: A motor may include a rotor that rotates on a central axis; and a stator that is located radially outside the rotor. The rotor may include a rotor core; and a resin portion that is provided to cover at least a part of the rotor core. The rotor core has a plurality of through-holes that penetrate the rotor core in an axial direction. The resin portion may include a first resin portion that is provided to cover at least a part of an axially first-side end face of the rotor core; and an extension that is provided in at least one of the through-holes and extends from the first resin portion through the through-hole in the axial direction. The first resin portion may include a protrusion that protrudes toward an axially first side. The protrusion and the extension may overlap with each other as seen in axial plan view.