Matsushita Electric Industrial Co., Ltd.

Kabushiki Kaisha Toyota Jidoshokki

Panasonic Corporation

Osaaki Morino

Hiroshi Murakami

Akihiko Yamazaki

Hisakazu Kataoka

Haruhiko Kado

Yasutake Seki

Toshiyuki Tamamura

Ken Suitou

Kenji Sasaki

Yoshinari Asano

Yasuharu Odachi

Noriyoshi Nishiyama

Yukio Honda

Taro Kishibe

Shinichi Okuyama

Masayuki Shinto

Takakatsu Hatae

A stator () is configured so that a plurality of power supply terminals () each having a tab () of a planar protrusion are located on an end face of a stator core (), the power supply side end of the winding () is connected to the power supply terminal (), and a lead wire () with a flag type terminal () is connected to the power supply terminal (), the lead wire being connected to the flag type terminal () in a direction intersecting a press-fitting direction into the tab (), the plurality of power supply terminals () are arranged at the same height from the end face of the stator core () and are inclined so that the faces of the tabs () of the plurality of power supply terminals () are not arranged on the same plane. The flag type terminal () and the lead wire () are prevented from interfering with each other in the vicinity of the power supply terminal (), and the lead wire () is arranged not higher than the flag type terminal () from the stator core (), whereby the overall height of the stator is reduced.

Electric compressor motor having a stator core of reduced height

A low-vibration/noise brushless motor capable of limiting the height of coil ends, and a low-current-leak hermetic compressor includes the brushless motor. This brushless motor is of a three-phase full-pitch-winding type including a stator having coils () inserted in slots in a one coil per one slot manner. Coil ends () of the coils () are arranged such that the first coil () is arranged outside the second and third coils () in a place (A) where the second and third coils () are inserted in a pair of slots adjacent to each other, the second coil () is arranged from inside of the first coil () to outside of the third coil () in a place (B) where the first and third coils are inserted in another pair of slots adjacent, and the third coil () is arranged inside the first and second coils () in a place (C) where the first and second coils () are inserted in still another pair of adjacent slots. The coil ends () are shaped in the axial direction.

Brushless motor and hermetic compressor assembly including the same motor

A structure of a rotor used in a synchronous motor employing both of permanent magnets and a stator using concentrated windings is disclosed. Slits () provided in a section of a rotor laminated in a direction of a rotary shaft are shaped like an arc or a bow, and the shape protrudes toward an outside rim of rotor (). Permanent magnets () are inserted into slits (). This structure produces less magnetic salient poles than a conventional rotor, so that a magnetic flux density can be lowered, and an efficient motor with less loss is obtainable.

Permanent magnet synchronous motor

A motor and a method for manufacturing thereof use a rotor having permanent magnets and stators. The highest revolving speed of a motor is adjusted by using end plates of different thickness. The end plates are made of a magnetic material and disposed at the end faces of the rotor. The end plates made of a magnetic material provide part of the magnetic flux generated from the permanent magnets with short circuits within the inside of the rotor. The magnetic flux that links with the coil can be adjusted by using end plates of different thickness. Therefore, the highest revolving speed of a motor can be finely adjusted with ease.

Motor and method for manufacturing the same

Growing community of inventors

Takefu, Japan

Osaaki Morino