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    POWER TOOL
    1.
    发明申请
    POWER TOOL 有权
    电动工具

    公开(公告)号：US20150069864A1

    公开(公告)日：2015-03-12

    申请号：US14481237

    申请日：2014-09-09

    Applicant: MAKITA CORPORATION

    Inventor： Tatsuya Nagahama ,  Junya lnuzuka ,  Takashi Momose

    IPC: H02K7/14 ,  H02K11/00 ,  H02K3/38 ,  H02K3/28

    CPC classification number: H02K7/145 ,  H02K3/28 ,  H02K3/522 ,  H02K5/225 ,  H02K7/116 ,  H02K11/215 ,  H02K11/27 ,  H02K29/08 ,  H02K2203/03 ,  H02K2203/09

    Abstract: A power tool (1; 90) includes a motor (17) having a stator (18) and a rotor (19). The stator (18) includes front and rear insulators (21, 22) respectively disposed forward and rearward of a stator core (20) in an axial direction thereof. At least six coils (23) are respectively wound on the stator (18) such that the coils (23) are wound through the front and rear insulators (21, 22). Winding wires (23a) respectively electrically connect circumferentially-adjacent pairs of the coils (23). A short circuiting device (25) short circuits respective pairs of windings (23a) that are located diagonally or diametrically across from one another.

    Abstract translation: 电动工具（1; 90）包括具有定子（18）和转子（19）的电动机（17）。 定子（18）包括分别设置在定子铁心（20）的轴向方向前后的前后绝缘体（21,22）。 至少六个线圈（23）分别缠绕在定子（18）上，使得线圈（23）通过前后绝缘体（21,22）缠绕。 绕线（23a）分别电连接周向相邻的线圈对（23）。 短路装置（25）使相对于彼此对角地或直径地对准的各对绕组（23a）短路。

    Power Tool
    3.
    发明申请
    Power Tool 有权
    电动工具

    公开(公告)号：US20150180307A1

    公开(公告)日：2015-06-25

    申请号：US14527050

    申请日：2014-10-29

    Applicant: MAKITA CORPORATION

    Inventor： Junya lnuzuka

    IPC: H02K7/14 ,  H02K1/28 ,  H02K15/03 ,  H02K1/27

    CPC classification number: H02K15/03 ,  B25F5/00 ,  B25F5/008 ,  H02K1/276 ,  H02K1/28 ,  H02K7/04 ,  H02K9/06 ,  H02K15/12

    Abstract: A power tool includes a housing and a brushless motor, the brushless motor having a stator and a rotor inside the housing, the rotor including a rotor core having a plurality of axially extending through holes and a permanent magnet in each of the plurality of through holes. The rotor is provided with at least one positioning structure by which the rotor core can be held in a desired circumferential orientation while the permanent magnets are inserted into the through holes.

    Abstract translation: 电动工具包括壳体和无刷电动机，所述无刷电动机在所述壳体内具有定子和转子，所述转子包括具有多个轴向延伸通孔的转子芯和所述多个通孔中的每一个中的永磁体 。 转子设置有至少一个定位结构，通过该定位结构，转子芯可以被保持在期望的圆周方向，同时永磁体被插入到通孔中。

    ELECTRIC WORK MACHINE
    5.
    发明申请
    ELECTRIC WORK MACHINE 有权

    公开(公告)号：US20230010726A1

    公开(公告)日：2023-01-12

    申请号：US17804622

    申请日：2022-05-31

    Applicant: MAKITA CORPORATION

    Inventor： Junya lnuzuka

    IPC: H02K1/278 ,  H02K21/12 ,  H02K7/14 ,  H02K1/28 ,  H02K3/34 ,  H02K11/21

    Abstract: An electric work machine includes: a brushless motor including: a rotor having permanent magnets fixed to a rotor core; a stator core; one or more insulators fixed to the stator core; and a stator including coils mounted on the insulator(s); magnetic sensors, which detect the position of the rotor in a rotational direction by detecting the magnetic flux of the permanent magnets; a controller, which controls energization of the coils based in part on detection signals of the magnetic sensors; and an output part driven by the rotor. The permanent magnets are each a neodymium, sintered, plate magnet. The pole count (N) is the number of permanent magnets. The stator diameter (x) is the diameter of a surface of the stator core that faces the rotor in millimeters. The following condition is satisfied: 0.16x+2.5

    POWER TOOL
    6.
    发明申请
    POWER TOOL 有权

    公开(公告)号：US20210099053A1

    公开(公告)日：2021-04-01

    申请号：US17122601

    申请日：2020-12-15

    Applicant: MAKITA CORPORATION

    Inventor： Tatsuya NAGAHAMA ,  Junya lnuzuka ,  Takashi Momose

    IPC: H02K7/14 ,  H02K3/28 ,  H02K3/52 ,  H02K5/22 ,  H02K29/08 ,  H02K7/116 ,  H02K11/215 ,  H02K11/27 ,  H02K5/04 ,  B25F5/02

    Abstract: A power tool (1; 90) includes a motor (17) having a stator (18) and a rotor (19). The stator (18) includes front and rear insulators (21, 22) respectively disposed forward and rearward of a stator core (20) in an axial direction thereof. At least six coils (23) are respectively wound on the stator (18) such that the coils (23) are wound through the front and rear insulators (21, 22). Winding wires (23a) respectively electrically connect circumferentially-adjacent pairs of the coils (23). A short circuiting device (25) short circuits respective pairs of windings (23a) that are located diagonally or diametrically across from one another.

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