Mitsubishi Electric Corporation

Mitsui High-tec Incorporated

Yoshiro Imazawa

Kazunori Tanaka

Shinji Nishimura

Yoshihiro Harada

Kazuya Hasegawa

Yoshihiro Shinosaka

Toru Ishikawa

Shinichi Ito

Shintaro Shimizu

Kenji Maekawa

Kenji Nakao

Masao Akiyoshi

Shogo Okamoto

Wakaki Miyaji

Yuzuru Kobayashi

Shinichiro Minami

Kensaku Kuroki

Hiroya Ikuta

Norihiro Murata

Akihiro Hashimoto

Toshiyuki Oonishi

Ken Nishikawa

Hiroshi Hosokawa

Shiro Iizuka

Toshiyuki Onishi

Masahiko Furuta

Michiya Yasui

Toshio Goto

Hitoshi Shibagaki

Ryoichi Sasahara

Yuki Uesato

Naoya Nishikawa

A winding-start receiving groove in which a winding-start lead wire of a field coil is received is formed in an inner surface of a flange of an insulation bobbin. A holder is disposed on the flange and located on a radially outer side of the winding-start receiving groove. The holder is formed with a holder groove located on an extension line of the winding-start receiving groove and extending at an angle relative to a radial direction of the insulation bobbin. The winding-start lead wire of the field coil is received in the winding-start receiving groove and the holder groove and held by the holder. This makes it possible to obtain a rotor of a rotary electrical machine with a simplified configuration at low cost not only to improve winding workability but also to enhance electrical reliability and durability.

Rotor of rotary electrical machine

A detachment prevention portion extending in a circumferential direction of a flange portion of a bobbin from a neck portion of a locking portion provided so as to extend radially outward from the flange portion is formed such that a length by which the detachment prevention portion extends to one side in the circumferential direction is longer than a length by which the detachment prevention portion extends to another side in the circumferential direction. Accordingly, interference between cover portions and a field coil winding or between the cover portions and a winding jig for the winding during operation of winding a lead wire of the winding can be inhibited while electric insulation between a field coil and claw-shaped magnetic poles is ensured.

Rotor of rotating electric machine

First side surfacesof first magnetic pole portionsand second side surfacesof second magnetic pole portionsthat face each other in a circumferential direction are configured into parallel flat surfaces, first circumferentially tapered portionsare formed on circumferential shoulder portions of the first magnetic pole portions, second circumferentially tapered portionsare formed on circumferential shoulder portions of the second magnetic pole portions, and portions of the first and second circumferentially tapered portionsandenter a regionin which the first side surfacesand the second side surfacesthat face each other in the circumferential direction overlap when viewed from a direction that is perpendicular to the first side surfacesand the second side surfaces

Automotive rotary electric machine

A method for manufacturing a laminated iron core includes setting a blanking position on a strip-shaped workpiece for iron core pieces each including a yoke piece part having a linear shape and a magnetic pole piece part extending from the yoke piece part, such that a pair of iron core pieces are opposed each other and the magnetic pole piece part of one iron core piece is arranged between adjacent magnetic pole piece parts of the other iron core piece among the pair of iron core pieces, simultaneously blanking a front end side of the magnetic pole piece part and a back surface side of the yoke piece part of the one iron core piece from the strip-shaped workpiece before simultaneously blanking those of the other iron core piece from the strip-shaped workpiece, and blanking the iron core pieces from the strip-shaped workpiece.

Method for manufacturing laminated iron core and apparatus for manufacturing laminated iron core

In a rotor of the present invention, an interference is set to have a relationship so that an inner diameter of a press-fit projecting portion before press-fitting is smaller than a diameter of a shaft, and in the inner wall surface, a non-projecting portion is formed without projecting portions on a portion in which a weld line is generated by the molding.

Rotor for rotating electric machine

A lead wire connection structure includes a rectifier that is arranged at the outside or the inside in an axis direction of the brackets so as to rectify AC voltage, which is generated on the stator, to DC voltage; in which, when a number of conductors of a connecting portion, at which lead conductors of the stator winding and the rectifier are connected, is 'N' (N is integer and greater than or equal to 2) per one position, conductors, of which number is less than or equal to 'N&#x2212;1' per one position, are connected at the connecting portion, and conductors excepted from the conductors, of which number is less than or equal to &#x201c;N&#x2212;1&#x201d;, are welded onto the remaining conductors at a position being nearer the stator winding side than the connecting portion.

Lead wire connection structure of rotating electric machine

There is provided a rotor of a rotating electrical machine including a pair of field core bodies that are provided so as to enclose the field coil via the insulation bobbin around which the field coil is wound, in which a claw-shaped magnetic pole extending from an outer circumferential section of the field core body in an axial direction is provided on the field core body. The insulation bobbin has a plurality of flange sections extending from the base section of the claw-shaped magnetic pole along an inner surface of the claw-shaped magnetic pole of the field core body, and a plurality of thin portions are formed in the root section of the flange section at intervals in a circumferential direction.

Rotor of rotating electrical machine

An automotive rotary electric machine has a cooling fan including a flat ring-shaped mounting base plate fixed to a rotor, and a plurality of fan blades arranged in a row circumferentially such that each stands on a surface of the mounting base plate, the fan blades having an S-shaped cross-sectional shape that displaces gradually forward in a direction of rotation from a trailing edge that is an outer circumferential edge toward a leading edge that is an inner circumferential edge, and in which an arc shape near the trailing edge that is convex forward in the direction of rotation and an arc shape near the leading edge that is convex rearward in the direction of rotation are connected smoothly.

The stator winding has winding assemblies that are disposed in a stator core so as to be stacked in three or more layers in a radial direction such that slot-housed portions line up in single columns in a clot depth direction inside slots, and radial widths of return portions of the winding assemblies that are mounted so as to be stacked in a radial direction are made sequentially narrower in order of return portions of a winding assembly that is positioned centrally, return portions of a winding assembly that is positioned on an inner circumferential side, and return portions of a winding assembly that is positioned on an outer circumferential side.

Automotive rotary electric machine and stator manufacturing method that is used therefor

The stator winding has winding assemblies that are disposed in a stator core so as to be stacked in three or more layers in a radial direction such that slot-housed portions line up in single columns in a slot depth direction inside slots, and radial widths of return portions of the winding assemblies that are mounted so as to be stacked in a radial direction are made sequentially narrower in order of return portions of a winding assembly that is positioned centrally, return portions of a winding assembly that is positioned on an inner circumferential side, and return portions of a winding assembly that is positioned on an outer circumferential side.

Stator manufacturing method used for automotive rotary electric machine

A winding assembly includes: slot-housed portions housed inside each of the slots of the stator core so as to form pairs that line up in an inner layer and an outer layer relative to a slot depth direction; first return portions at a first axial end of the stator core that link end portions of the slot-housed portions housed in the inner layer inside each of the slots and end portions of the slot-housed portions housed in the outer layer inside the slots that are (N&#x2212;M) slots away; and second return portions at a second axial end of the stator core that link end portions of the slot-housed portions housed in the outer layer inside each of the slots and end portions of the slot-housed portions housed in the inner layer inside the slots that are (N+M) slots away.

Automotive rotary electric machine and winding assembly manufacturing method that is used therefor

Rectifier of AC generator for vehicle

The stator winding includes: a first three-phase wye-delta hybrid winding that is configured by connecting phase windings of a first wye winding to respective output ends of a first delta winding; and a second three-phase wye-delta hybrid winding that is configured by connecting phase windings of a second wye winding to respective output ends of a second delta winding. The phase windings of the first and second wye windings are configured by connecting two winding portions in parallel, and those two winding portions are configured such that distributions of radial positions inside slots of conductor wires that constitute the winding portions are equal.

Rotary electric machine

The present invention provides an automotive dynamoelectric stator that enables vibration resistance of a lead portion to be ensured and reductions in area of the lead portion and a coil end group that is exposed to a cooling airflow to be suppressed without increasing work or cost. In a dynamoelectric machine according to the present invention, first lead portions that connect a plurality of windings to configure phase windings are each led axially outward from a rear-end coil end group, and then disposed so as to extend parallel to an axially outer peripheral surface of the rear-end coil end group so as to cross at least one other first lead portion, and so as to be separated from the axially outer peripheral surface of the rear-end coil end group.

Automotive dynamoelectric stator

There is provided a vehicle AC generator in which the contact face of at least one of a pair of cases that make contact with the respective axis-direction end faces of a stator core is provided with a cooling air path that connects the outer circumferential surface of a coil end portion with the outer circumferential surface of the stator core and has an opening in the axis direction at the outer circumferential surface of the stator core so that the coolability of the coil end portions of the stator coil is raised, and the amount of cooling air is increased so that the overall coolability of the AC generator is improved.

Growing community of inventors

Tokyo, Japan

Yoshiro Imazawa