Makita Corporation

Yoshinori Sasaki

Masanori Furusawa

Yoshitaka Machida

Hiroki Ikuta

Hirokatsu Yamamoto

Akira Naito

Hitoshi Iida

Takahiro Kawakami

Takao Kuroyanagi

Tatsuo Nakashima

Yoshihiro Kimura

Ken Yamauchi

Ryo Umemoto

Takamasa Hanai

Yu Eto

Masanori Higashi

Luyen Van Tong

Ikuta Hiroki

Higashi Masanori

Yamauchi Ken

Hanai Takamasa

Nakashima Tatsuo

Machida Yoshitaka

An electric work machine reduces noise from the electric work machine. An electric work machine includes a motor including a stator including a stator core and coils, and a rotor including a rotor core and a rotor shaft, an output unit located frontward from the motor and rotatable with a rotational force from the motor, a first support having a first contact surface in contact with a front end face of the stator core, a second support having a second contact surface in contact with a rear end face of the stator core, and a screw connecting the first support and the second support and fastening the stator core to the first support and the second support in a front-rear direction.

Electric work machine

A handle for use with a power tool includes a handle body, a beam and a weight. The handle body includes a mounting part and a grip part. The handle body is configured to be removably secured to a tool body of a power tool. The grip part is formed in an elongated hollow shape. The beam is supported by the handle body in a cantilever manner and extends within the grip part. The weight is supported by the beam.

Handle for use with power tool

An electric work machine () includes: a motor housing () having a tube part (C;C) and a bottom part (M;M); a brushless motor () having a stator (), which has a first contact surface (F;F), and a rotor () disposed in the stator; a baffle plate (); and an output shaft (). The stator includes a tube-shaped stator core () having a ring-shaped second contact surface (S;S) that is opposite of the first contact surface, and coils () wound on the stator core. The stator is held by the motor housing with the first contact surface in contact with the bottom part. A protruding part (S;S) of the baffle plate contacts the entire circumference of the second contact surface of the stator core and is fixed to the motor housing by three or more screws ().

Electric work machine and manufacturing method therefor

An electric work machine with a product structure that effectively reduces noise caused by a brushless motor without changing the motor specifications. A hammer drill includes a brushless motor including a stator including an insulator, a cylindrical stator core, and a coil wound around the stator core via the insulator, and a rotor rotatable relative to the stator, a cylindrical member fixed along an entire outer circumference of the stator core and made of material with a Young's modulus higher than a Young's modulus of the insulator, and a housing accommodating the brushless motor and the cylindrical member.

An impact tool includes a motor, a driving mechanism, and a vibration sensor. The driving mechanism is configured to perform a hammering operation of linearly driving a tool accessory along an impact-axis by power of the motor. The impact-axis extends in a front-rear direction of the impact tool. The vibration sensor is configured to detect vibrations. The vibration sensor is disposed such that the vibration sensor is capable of detecting vibrations of a first frequency among vibrations caused in the impact tool, and such that transmission of vibrations of a second frequency to the vibration sensor is suppressed. The vibrations of the first frequency result from the hammering operation. The second frequency is different from the first frequency.

Impact tool

A power tool, such as a grinder, includes a motor housing that houses a motor. A grip housing extends in a longitudinal direction of the power tool and has a first longitudinal end coupled to the motor housing, first and second battery-mount parts formed at a second longitudinal end, and a grip part disposed between the first and second longitudinal ends. First and second battery packs are respectively mountable on the first and second battery-mount parts, and the grip housing comprises an upper housing half joined to a lower housing half.

Power tool

In a dust collection device that collects dust particles that an impact tool generates, disclosed is a feature that can accommodate the lengths of tool bits that are mounted to the impact tool when a machining operation is executed by exchanging tool bits of different lengths. The dust collection device collects dust that the impact tool generates and is attached to said impact tool that, in the lengthwise direction, linearly operates the tool bit mounted to the end region of a tool body. The dust collection device has a dust intake port that sucks dust, and said dust intake port can be repositioned in the lengthwise direction of the tool bit in accordance with the length in the lengthwise direction of said tool bit.

Dust collecting device and impact tool

Growing community of inventors

Anjo, Japan

Yoshinori Sasaki