Mitsubishi Denki Kabushiki Kaisha

Yukinori Takekoshi

Yuji Nakahara

Shigekazu Sakabe

Yoshio Kasuga

Kenichi Azuma

Tomoyuki Nishinaka

Yuuji Nakahara

Yukihisa Suzumura

Naotoshi Kaito

Satoshi Takefushi

Masahiro Taguchi

Shunichi Kachi

Shuuichi Kiri

Kouki Kieda

Shuichi Kiri

Makoto Ukai

Yasunari Takada

An electric motor in which an inner ring magnetic pole portion (10) consisting of magnetic pole pieces (7) is fitted into an outer ring yoke portion (5) to form stator core (6); an insulating resin is shaped and fixed, the insulating resin includes coil guards (16) which protrude on one end face of the inner ring magnetic pole portion (10); grooves for inserting insulating wedges (31) are formed on the side wall of the coil guards (16); a rotor (17) is inserted into the inner ring magnetic pole portion (10); an insulating cover (19) which consists of pins (25) and bobbin columns (20) including outer poles (24) and inner poles (23) is put on the rotor (17); coils (26) are wound in the space formed between the inner poles (23) and the center of the inner ring magnetic pole portion (10).

Electric motor with bobbin columns to prevent bulging coils

A motor having a stator which comprises a stator iron core 6 formed by fitting an inner ring magnetic pole portion 10 into an outer ring yoke portion 5, the inner ring magnetic pole portion 10 having slots 8 and magnetic poles 7; an insulating member 11 covering the inner ring magnetic pole portion of the stator iron core; a funnel-like insulating 13 which is formed integrally with the insulating member 11 to cover an end surface 14 of the inner ring magnetic pole portion 10 and which has a first through hole 15 for rotary shaft to communicate with the central portion of the inner ring magnetic pole portion 10 spool frames 23, 24 with pins 28 formed on the magnetic poles 7 so as to be integral with the insulating member 13; a rotor 16 inserted in the inner ring magnetic pole portion; 10; a funnel-like insulating cover 18 having a second through hole 20 for rotary shaft which is in alignment with the first through hole 15, the insulating cover 18 being mounted on the other end surface 12 of the inner ring magnetic pole portion 10 and coils 32, 34 wound on the stator iron core 6 and fitted in the slots 8 in a parallel and crosswise shape, the coils 32, 34 having ends engaged with the pins 28, wherein openings 49 are formed in an outer casing 41 for receiving therein the stator so that the spool frames are inserted in the openings 49; a terminal block 50 connected to a cord for power feeding and supporting electronic devices 52 which are connected with the pins 28 is mounted on the spool frames and a cover 58 is fitted to the outer casing 41.

Electrical motor

Growing community of inventors

Nakatsugawa, Japan

Yukinori Takekoshi