公开(公告)号：US20220250224A1

公开(公告)日：2022-08-11

申请号：US17730266

申请日：2022-04-27

Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

Inventor： William A. Elger

IPC: B25D16/00 ,  B25D11/10

Abstract: A hammer drill includes a housing, a first ratchet fixed to the housing, a spindle rotatably supported by the housing about an axis, and a second ratchet coupled for co-rotation with the spindle. The second ratchet is engageable with the first ratchet in response to rearward displacement of the spindle to impart a hammering action on the spindle. The hammer drill further includes a thrust bearing having an arm extending away from the axis, and a selector ring having a post extending toward the arm. The selector ring is rotatable between a first position in which the post is engageable with the arm to limit the rearward displacement of the spindle and prevent engagement of the first and second ratchets, and a second position in which the post is misaligned with the arm to permit the rearward displacement of the spindle and engagement of the first and second ratchets.

公开(公告)号：US11345009B2

公开(公告)日：2022-05-31

申请号：US17032548

申请日：2020-09-25

Applicant: Milwaukee Electric Tool Corporation

Inventor： William A. Elger

IPC: B25D16/00 ,  B25D11/00 ,  B25D11/10

Abstract: A hammer drill includes a housing, a first ratchet fixed to the housing, a spindle rotatably supported by the housing about an axis, and a second ratchet coupled for co-rotation with the spindle. The second ratchet is engageable with the first ratchet in response to rearward displacement of the spindle to impart a hammering action on the spindle. The hammer drill further includes a thrust bearing having an arm extending away from the axis, and a selector ring having a post extending toward the arm. The selector ring is rotatable between a first position in which the post is engageable with the arm to limit the rearward displacement of the spindle and prevent engagement of the first and second ratchets, and a second position in which the post is misaligned with the arm to permit the rearward displacement of the spindle and engagement of the first and second ratchets.

公开(公告)号：US10673305B2

公开(公告)日：2020-06-02

申请号：US16525964

申请日：2019-07-30

Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

Inventor： Andrew T. Beyerl ,  Keith Boulanger ,  Alex Huber ,  William A. Elger ,  Jeffrey M. Wackwitz

IPC: H02K7/14 ,  B25F5/00 ,  H02K29/08 ,  H02K1/18 ,  H02K5/15 ,  H02K7/08 ,  H02K11/21 ,  H02K5/16 ,  H02K7/116 ,  H02K21/14 ,  H02K9/06 ,  H02K11/215

Abstract: A power tool including a housing, a controller within the housing, and a brushless motor within the housing and controlled by the controller. The brushless motor including a stator assembly including a stator core having stator laminations with an annular portion and inwardly extending stator teeth. The stator assembly defines a stator envelope in an axial direction extending between axial ends of stator end caps of the stator assembly. The brushless motor further includes a rotor assembly including a rotor core having rotor laminations and defining a central aperture that extends in the axial direction and that receives a shaft, and a position sensor board assembly including position sensors and configured to provide position information of the rotor core to the controller. The rotor assembly and the position sensor board assembly are provided at least partially within the stator envelope.

公开(公告)号：US20230061923A1

公开(公告)日：2023-03-02

申请号：US17981624

申请日：2022-11-07

Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

Inventor： Andrew T. Beyerl ,  Keith Boulanger ,  Alex Huber ,  William A. Elger ,  Jeffrey M. Wackwitz

IPC: H02K7/14 ,  B25F5/00 ,  H02K29/08 ,  H02K1/18 ,  H02K5/15 ,  H02K7/08 ,  H02K11/21 ,  H02K5/16 ,  H02K7/116 ,  H02K21/14

Abstract: A power tool including a housing, a controller within the housing, and a brushless motor within the housing and controlled by the controller. The brushless motor including a stator assembly including a stator core having stator laminations with an annular portion and inwardly extending stator teeth. The stator assembly defines a stator envelope in an axial direction extending between axial ends of stator end caps of the stator assembly. The brushless motor further includes a rotor assembly including a rotor core having rotor laminations and defining a central aperture that extends in the axial direction and that receives a shaft, and a position sensor board assembly including position sensors and configured to provide position information of the rotor core to the controller. The rotor assembly and the position sensor board assembly are provided at least partially within the stator envelope.

公开(公告)号：US20200280243A1

公开(公告)日：2020-09-03

申请号：US16879090

申请日：2020-05-20

Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

Inventor： Andrew T. Beyerl ,  Keith Boulanger ,  Alex Huber ,  William A. Elger ,  Jeffrey M. Wackwitz

IPC: H02K7/14 ,  B25F5/00 ,  H02K29/08 ,  H02K1/18 ,  H02K5/15 ,  H02K7/08 ,  H02K11/21 ,  H02K5/16 ,  H02K7/116 ,  H02K21/14

Abstract: A power tool including a housing, a controller within the housing, and a brushless motor within the housing and controlled by the controller. The brushless motor includes a stator assembly, a rotor core, and a rotor enclosure. The stator assembly includes a stator core having stator laminations defining a stack length in an axial direction. The rotor enclosure includes a front end cap provided on a first side of the rotor core having a front bearing holder; and a rear end cap provided on a second side of the rotor core. The brushless motor further includes a fan, a front bearing, and a rear bearing. The front bearing holder and the fan define a bearing-to-fan length in the axial direction between axial ends of the front bearing holder and the fan, wherein a difference between the bearing-to-fan length and the stack length is less than 23.5 millimeters.

公开(公告)号：US20140110140A1

公开(公告)日：2014-04-24

申请号：US14055954

申请日：2013-10-17

Applicant: Milwaukee Electric Tool Corporation

Inventor： William A. Elger

IPC: B25D16/00

CPC classification number: B25D16/006 ,  B25D11/106 ,  B25D16/003 ,  B25D2216/0023 ,  B25D2216/0038

Abstract: A hammer drill includes a housing, a first ratchet fixed to the housing, a spindle rotatably supported by the housing about an axis, and a second ratchet coupled for co-rotation with the spindle. The second ratchet is engageable with the first ratchet in response to rearward displacement of the spindle to impart a hammering action on the spindle. The hammer drill further includes a thrust bearing having an arm extending away from the axis, and a selector ring having a post extending toward the arm. The selector ring is rotatable between a first position in which the post is engageable with the arm to limit the rearward displacement of the spindle and prevent engagement of the first and second ratchets, and a second position in which the post is misaligned with the arm to permit the rearward displacement of the spindle and engagement of the first and second ratchets.

Abstract translation: 锤钻包括壳体，固定到壳体的第一棘轮，由壳体围绕轴线可旋转地支撑的心轴以及与主轴共同旋转的第二棘轮。 响应于主轴的向后移位，第二棘轮可与第一棘轮接合，从而在心轴上施加锤击作用。 锤钻还包括具有远离轴线延伸的臂的止推轴承，以及具有朝向臂延伸的柱的选择环。 选择器环可在第一位置和第二位置之间旋转，在第一位置，柱可与臂接合以限制主轴的向后移位，并防止第一和第二棘爪的接合，以及第二位置，其中杆与臂不对准， 允许主轴的向后移位和第一和第二棘爪的接合。

公开(公告)号：US20140080659A1

公开(公告)日：2014-03-20

申请号：US14023766

申请日：2013-09-11

Applicant: Milwaukee Electric Tool Corporation

Inventor： William A. Elger

IPC: B25F5/00

CPC classification number: B25F5/001

Abstract: A multi-stage planetary transmission includes a transmission housing and a first planetary stage at least partially positioned in a transmission housing. The first planetary stage includes a first stage ring gear, a first stage carrier, and a plurality of first stage planet gears supported by the first stage carrier. A motor output pinion is engaged with each of the first stage plant gears. The transmission further includes a second planetary stage positioned downstream of the first planetary stage to receive torque from the first planetary stage and a shift mechanism operable to move the first stage ring gear between a first position, in which the first stage ring gear is rotatably fixed relative to the transmission housing for enabling the first planetary stage, and a second position, in which the first stage ring gear is coupled for co-rotation with the first stage carrier for disabling the first planetary stage.

Abstract translation: 多级行星变速器包括变速器壳体和至少部分地定位在变速器壳体中的第一行星级。 第一行星级包括第一级环形齿轮，第一级载体和由第一级载体支撑的多个第一级行星齿轮。 电动机输出小齿轮与每个第一级工厂齿轮接合。 所述变速器还包括位于所述第一行星架下游的第二行星架，以接收来自所述第一行星架的扭矩;以及变速机构，其可操作以使所述第一级环形齿轮在第一位置和第一位置之间移动，在所述第一位置， 相对于用于实现第一行星架的变速器壳体和第二位置，第一位置齿圈联接以与第一级行星架共同旋转以禁用第一行星级。

公开(公告)号：US11826892B2

公开(公告)日：2023-11-28

申请号：US17730266

申请日：2022-04-27

Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

Inventor： William A. Elger

IPC: B25D16/00 ,  B25D11/10

CPC classification number: B25D16/006 ,  B25D11/106 ,  B25D16/003 ,  B25D2216/0023 ,  B25D2216/0038

Abstract: A hammer drill includes a housing, a first ratchet fixed to the housing, a spindle rotatably supported by the housing about an axis, and a second ratchet coupled for co-rotation with the spindle. The second ratchet is engageable with the first ratchet in response to rearward displacement of the spindle to impart a hammering action on the spindle. The hammer drill further includes a thrust bearing having an arm extending away from the axis, and a selector ring having a post extending toward the arm. The selector ring is rotatable between a first position in which the post is engageable with the arm to limit the rearward displacement of the spindle and prevent engagement of the first and second ratchets, and a second position in which the post is misaligned with the arm to permit the rearward displacement of the spindle and engagement of the first and second ratchets.

公开(公告)号：US20210008704A1

公开(公告)日：2021-01-14

申请号：US17032548

申请日：2020-09-25

Applicant: Milwaukee Electric Tool Corporation

Inventor： William A. Elger

IPC: B25D16/00 ,  B25D11/10

Abstract: A hammer drill includes a housing, a first ratchet fixed to the housing, a spindle rotatably supported by the housing about an axis, and a second ratchet coupled for co-rotation with the spindle. The second ratchet is engageable with the first ratchet in response to rearward displacement of the spindle to impart a hammering action on the spindle. The hammer drill further includes a thrust bearing having an arm extending away from the axis, and a selector ring having a post extending toward the arm. The selector ring is rotatable between a first position in which the post is engageable with the arm to limit the rearward displacement of the spindle and prevent engagement of the first and second ratchets, and a second position in which the post is misaligned with the arm to permit the rearward displacement of the spindle and engagement of the first and second ratchets.

公开(公告)号：US10205365B2

公开(公告)日：2019-02-12

申请号：US15474358

申请日：2017-03-30

Applicant: Milwaukee Electric Tool Corporation

Inventor： Andrew T. Beyerl ,  Keith Boulanger ,  Alex Huber ,  William A. Elger ,  Jeffrey M. Wackwitz

IPC: H02K7/14 ,  H02K11/21 ,  B25F5/00 ,  H02K1/18 ,  H02K5/16 ,  H02K7/08 ,  H02K7/116 ,  H02K21/14 ,  H02K29/08

Abstract: A brushless direct current motor for a power tool. The motor includes a stator assembly including a stator core having stator laminations with an annular portion and inwardly extending stator teeth. The motor also includes a rotor assembly including a rotor core having rotor laminations and defining a central aperture that receives an output shaft. The rotor assembly also includes a rotor end cap on a first side of the rotor core having a bearing holder and defining a channel, wherein the channel is open on a side of the rotor end cap facing the rotor core. The motor further includes a bearing provided in the bearing holder that couples the rotor end cap to the output shaft and a position sensor board assembly provided in the channel of the rotor end cap and configured to provide position information of the rotor core to a motor controller.