Nippondenso Co., Ltd.

Masanori Mori

Satoru Hamano

Masanori Ohmi

Shogo Uzura

Tsutomu Maekawa

Yasuyuki Wakahara

Yoshito Takagi

Naoki Yoshikawa

Masayuki Hamaguchi

An armature for an electric motor has an improved integrated armature coil body. The integrated armature coil body includes an annular and substantially flat portion projecting a minimum distance beyond one end of an armature core, the annular portion being defined by curved connecting portions of separate winding wires arranged and disposed substantially in the Archimedes' spiral relationship about the center of the armature core. Each of the winding wires has first and second straight portions extending from the curved connecting portions through different slots in the armature core and connected to a commutator at the other end of the armature core. Each wire has two curved connecting portions, one overlying the other curved connecting portion of a plurality of other wires.

Armatures and method for manufacturing such armatures

A brush holding device of an 'easy-to-assemble' type disposed between a yoke and an end frame of a motor. The device has a brush holder formed in one body from an electrically insulating material to include an annular-type field winding fixing frame, a brush holding stay having a plurality of brush chambers thereon, each of the brush chambers having at least an opening on the side of the end frame, integral connecting portions annularly connecting the spaced brush chambers therebetween, an insulating plate member having relatively rigid body portions to cover the openings of the brush chambers and relatively flexible portions connecting the body portions therebetween, and means for fixing the insulation to the brush holders by deforming the flexible portions of the insulator toward the brush holders. The aforementioned annular fixing frame has a plurality of flanges radially outwardly extending from the outer periphery thereof by which the annular frame is circumferentially axially aligned with the yoke. Consequently, the brush holding device is able to be rigidly held between the yoke and the end frame without using a bolt while establishing a good alignment of the device in the circumferential and the axial direction.

Brush holding device for rotating electrical machines

Growing community of inventors

Okazaki, Japan

Masanori Mori