公开(公告)号：US10236739B2

公开(公告)日：2019-03-19

申请号：US14887652

申请日：2015-10-20

Applicant: MAKITA CORPORATION

Inventor： Kiyoshi Aoyama ,  Masanori Higashi ,  Takashi Momose

IPC: H02K3/28 ,  H02K3/18 ,  H02K21/22 ,  H02K7/14

Abstract: The present application discloses an electric working machine. The electric working machine includes a motor including a stator. The stator includes: a stator core haring a plurality of tooth portions radially extending along a radial direction; and a first coil, a second coil, and a third coil wound on the tooth portions. A start end of the first coil and a finish end of the second coil, a start end of the second coil and a finish end of the third coil, and a start end of the third coil and a finish end of the first coil are led out within a range of 200 degrees from the stator.

公开(公告)号：US10532454B2

公开(公告)日：2020-01-14

申请号：US15597437

申请日：2017-05-17

Applicant: MAKITA CORPORATION

Inventor： Shingo Kamiya ,  Haruki Tejima ,  Takao Kuroyanagi ,  Masanori Higashi

IPC: B25F5/00 ,  H02P29/032 ,  H02K7/108 ,  H02K7/14 ,  H02P6/08

Abstract: An electric working machine according to one aspect of the present disclosure includes an output shaft, a motor, a transmitting device, a drive device, a controller, and a current path. The transmitting device has transmittable allowable torque and transmits rotation of the motor to the output shaft. The drive device energizes the motor with electric supply from a battery in accordance with a command from outside the electric working machine. The current path is configured to be able to energize the motor with a current value larger than an allowable current value required to limit torque generated in the transmitting device due to rotation of the motor to the allowable torque or smaller.

公开(公告)号：US09364906B2

公开(公告)日：2016-06-14

申请号：US14155358

申请日：2014-01-15

Applicant: MAKITA CORPORATION

Inventor： Kenji Abe ,  Masayoshi Okumi ,  Hidenori Nagasaka ,  Motohiro Omura ,  Masaaki Fukumoto ,  Kenji Shibata ,  Nobuyasu Furui ,  Masanori Higashi ,  Kiyoshi Aoyama

IPC: H02K7/14 ,  B23D47/12 ,  B24B23/02 ,  B24B47/12 ,  B25F5/02

CPC classification number: B23D47/12 ,  B24B23/02 ,  B24B47/12 ,  B25F5/008 ,  B25F5/02

Abstract: A hand-held power tool includes a motor having a stator and a rotor, the motor being configured to rotate the rotor at a speed of at least 40,000 rpm, an output shaft directly driven by the rotor, a tool accessory shaft configured to support a tool accessory, and a two-stage speed reducing transmission operably connecting the output shaft to the tool accessory shaft. The two-stage speed reducing transmission is configured to drive the tool accessory shaft at a rate less than the rotor speed, for example, at a rate less than or equal to 37.5% of the rotor speed.

Abstract translation: 一种手持电动工具包括具有定子和转子的电动机，所述电动机构造成以至少40,000rpm的转速旋转所述转子，由所述转子直接驱动的输出轴;工具附件轴， 工具附件，以及将输出轴与工具附件轴可操作地连接的两级减速传动装置。 两级减速传动装置构造成以小于转子速度的速度驱动工具附件轴，例如以小于或等于转子速度的37.5％的速率。