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公开(公告)号：US11196326B2
公开(公告)日：2021-12-07
申请号：US16180510
申请日：2018-11-05
发明人： Shimpei Fujiwara , Masashi Kawai , Hiroaki Takeda
IPC分类号： H02K15/12 , H02K3/34 , H02K15/10 , B29C35/02 , B29C41/20 , B29L31/00 , B29K67/00 , B29K63/00
摘要： A manufacturing method for an electric motor stator includes an injecting step in which thermosetting resin is injected into a forming die, a dipping step in which a coil end portion is dipped into the thermosetting resin injected into the forming die, a heating step in which the thermosetting resin inside the forming die is heated so as to form a molded portion, and a mold release step in which the molded portion is released from the forming die when at least either shear force of the thermosetting resin or adhesive strength between the coil end portion and the thermosetting resin becomes greater than previously-determined mold release force.
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公开(公告)号：US11784545B2
公开(公告)日：2023-10-10
申请号：US17066926
申请日：2020-10-09
CPC分类号： H02K15/12 , H02K15/026 , H02K15/065 , H02K15/10 , H02K15/14
摘要： An apparatus for manufacturing a stator includes a placement table, a supporting member and a resistance heating device. The placement table is configured to have a stator core, which has coil segments and insulators inserted in slots thereof, placed thereon. The stator core is formed of steel sheets that are laminated in an axial direction of the stator core. The coil segments together form a stator coil. The insulators are formed of a material that is foamable upon being heated. The supporting member is configured to support, in the axial direction of the stator core, distal end portions of teeth of the stator core so as to prevent gaps from being formed between the steel sheets forming the stator core. The resistance heating device is configured to heat, through energization of the stator coil, the insulators along with the stator coil and thereby cause the insulators to foam.
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