公开(公告)号：US20220184792A1

公开(公告)日：2022-06-16

申请号：US17514691

申请日：2021-10-29

Applicant: MAKITA CORPORATION

Inventor： Takaharu NAKATSUKA ,  Yoshihiro ITO

IPC: B25F5/00 ,  B25B23/147 ,  H02K5/173 ,  H02K7/08 ,  H02K7/116 ,  H02K7/14 ,  H02K11/24 ,  H02K21/16

Abstract: A torque sensor is less likely to lower detection accuracy. A screwing machine includes a motor including a stator and a rotor rotatable about a rotation axis, a gear case, a planetary gear, an internal gear connected to the planetary gear, a torque sensor including a front plate coupled to the internal gear, a rear plate supported by the gear case, a hollow portion located between the front plate and the rear plate, and a strain gauge fixed to the hollow portion, a bearing located between the stator and the rear plate and supporting at least a part of the rotor, and a bearing box surrounding the bearing and supporting the bearing.

公开(公告)号：US20210331306A1

公开(公告)日：2021-10-28

申请号：US17190115

申请日：2021-03-02

Applicant: MAKITA CORPORATION

Inventor： Yoshihiro ITO ,  Tomohiko IMAE ,  Jun UEDA

IPC: B25F5/00 ,  B25F5/02

Abstract: A power tool including a rear cover simplifies assembly. A driver drill includes a motor including a stator and a rotor rotatable relative to the stator, a motor housing accommodating the motor, being cylindrical, and including a left housing and a right housing being laterally separable, a grip connected to a lower portion of the motor housing, an output unit in front of the motor and driven by the motor, and a rear cover supporting a rear portion of the rotor and closing a rear portion of the motor housing. The rear cover is held and fastened between the left housing and the right housing.