Elektrisches Werkzeug

Details

Veröffentlichungs-Nr.

EP2527098

Aktenzeichen

EP12167502

Anmeldetag

10. Mai 2012

Veröffentlichung

4. April 2018

Erteilung

4. April 2018

Rechtsraum

EP

IPC

B25F5/00H02K21/22

Abstract

There is disclosed an electric power tool (10) in which magnetic saturation seldom occurs in a tooth (321) of a stator (32) without increasing the size of a motor (30). The electric power tool (10) includes a motor (30) having a stator (32) with a plurality of teeth (321) formed circumferentially at equal intervals and axially extending groove-like slots (323) between each tooth (321), with winding wires (325) being wound around each tooth (321) by use of the slots (323), and having a tubular rotor (37) coaxially surrounding the stator (32) with a permanent magnet (374) of a plurality of poles on an inner peripheral surface facing distal end surfaces of the teeth (321) of the stator (32). Further, the ratio of the number of poles of the permanent magnet (374) of the rotor (37) to the number of slots (323) of the stator (32) is set to be 4 to 3.

Anmelder

Firma

Makita Corporation

Land

🇯🇵 Japan

Fachgebiete