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    BRUSHLESS MOTOR FOR A POWER TOOL
    9.
    发明公开
    BRUSHLESS MOTOR FOR A POWER TOOL 审中-公开

    公开(公告)号：EP3858551A1

    公开(公告)日：2021-08-04

    申请号：EP21164428.1

    申请日：2017-03-30

    申请人： Milwaukee Electric Tool Corporation

    发明人： T. BEYERL, Andrew ,  BOULANGER, Keith ,  HUBER, Alex ,  A. ELGER, William ,  M. WACKWITZ, Jeffrey

    IPC分类号： B25F5/00 ,  H02K29/08 ,  H02K5/15 ,  H02K5/14 ,  H02K16/02 ,  H02K7/116 ,  H02K1/18 ,  H02K5/16 ,  H02K7/08 ,  H02K7/14 ,  H02K9/06

    摘要： A power tool with a brushless direct current motor (300). The motor (300) includes a stator assembly (310) including a stator core having stator laminations with an annular portion and inwardly extending stator teeth (345). The motor (300) also includes a rotor assembly including a rotor core (410) having rotor laminations and defining a central aperture that receives an output shaft (330). The rotor assembly also includes a rear rotor end cap (430) on a second side of the rotor core (410) having a rear bearing holder and defining a channel, wherein the channel is open on a side of the rear rotor end cap (430) facing the rotor core (410). The motor (300) further includes a rear bearing (530) provided in the rear bearing holder that couples the rear rotor end cap (430) to the output shaft (330) and a position sensor board assembly (540) provided in the channel of the rear rotor end cap (430) and configured to provide position information of the rotor core (410) to a motor controller.