Sanyo Denki Co., Ltd.

Ikuo Takeshita

Mitsuaki Shioiri

Akio Miyahara

Syougo Yoda

Shigenori Miyairi

Akira Koike

Masaaki Oohashi

Koji Nakatake

Hisayuki Miyajima

Electric motor

A stator for a rotary electric machine with wedge members insertable into slots without being bent or folded is provided. A coupling portion is integrally formed at a non-inserted end portion, which is not inserted into a slot, of a wedge member, the coupling portion extending across an end of a partition wall portion and an end of a block portion. The wedge member and the coupling portion are formed of a synthetic resin material. Two or more coupling portions of two or more adjacently disposed wedge members are integrally formed as a continuous coupling portion.

Stator for rotary electric machine

An airtight-type electric motor capable of reducing vibration is provided. Inside ribs of a pair of end brackets and are respectively fitted into core end portions of a stator core. Outside ribs of the pair of end brackets and are respectively brought into contact against end surfaces of the core end portions of a yoke of the stator core. With this arrangement, the pair of end brackets and are fixed to the stator core, and a housing and the stator core are arranged, without being coupled together.

Airtight-type electric motor

A leading end portion of a lead wire holder located in a direction opposite to a direction in which six lead wires extend is inserted toward concave surfaces through an insertion opening. After the leading end portion has entered toward the concave surfaces and gotten out therefrom, the leading end portion is situated between opposed surfaces of hooks and a holder receiving portion bottom surface. With this arrangement, a back surface of a rear end portion located opposite to the leading end portion of the lead wire holder comes into contact with end surface portions of partitioning wall portions. An end surface portion of the rear end portion faces projecting portions. Then, the six lead wires are partially received in six lead wire receiving portions, respectively.

Depressed portions for being fitted with two rotor collarsare formed in two rotor stacksopposed to each other in an axial direction of the rotating shaftwith the rotor collarstherebetween. Each of the rotor collarsincludes a central portionand a pair of fitting portions. Shapes of the depressed portionsA and fitting portionsare both defined so that there occurs no relative displacement in the radial direction of the rotating shaftbetween the rotor stacksand the rotor collarswith the fitting portionsfitted into the depressed portionsA. With this arrangement, position alignment of rotor collar and rotating shaft can easily be performed.

Rotor for hybrid type stepping motor and manufacturing method thereof

The present invention provides a rotary electric machine, of which the occupied volume can be reduced and which allows a space in an electric apparatus equipped therewith to be utilized effectively. A slot insulatoris integrally formed with a holder mounting portion, a whole or major part of which is positioned on one of end faces of a yokeof a stator core. A lead wire holderincludes a connection holding portionfor disposing a plurality of connections, in which lead-out wires of windings are connected with corresponding core wiresof lead wires, at a predetermined interval so that the connections do not contact with each other. The lead wire holderis arranged so that the connection holding portionis positioned over a part of the windingsand the holder mounting portionwhen the lead wire holder is attached to the holder mounting portion. One end bracket, which faces to one of the end faces of the yoke, is formed with a recess which opens toward both sides in the axial direction thereof as well as opens outwardly in a radial direction of a shaft. The holder mounting portionand lead wire holderare received within the recess when the one end bracket is attached to the one end face of the yoke.

Growing community of inventors

Nagano, Japan

Ikuo Takeshita