A winding support (1) for an electric machine (100), having multiple pole teeth (10), wherein each pole tooth (10) has a tooth shank (14) around which at least one winding can be arranged, and wherein a tooth shank (14) has an increasing width of the tooth shank (14) in an axial direction (3) of the winding support (1) proceeding from an axial face side of the winding support (1). At least one tooth shank (14) has an increasing or decreasing width in or counter to the radial direction (5) of the winding support (1).

A rotor (2), especially for an electrical rotating machine, for example for an alternator, comprising an electric winding (100) formed by at least one electric wire (101), the wire comprising: at least one first portion (104) wound as at least one turn of the winding; a transverse section with at least one flat (115) along the first portion; at least one second portion (105) allowing the connection of the winding to an electric circuit; and an essentially circular transverse section along the second portion.

A rotor of an electric machine, in particular of a claw pole machine, has a slip ring arrangement with two slip rings which are arranged on the rotor shaft, the slip rings being placed onto an insulating sleeve which is of electrically insulating configuration and is seated directly on the rotor shaft, the insulating sleeve (59) having a thermal conductivity of at least 2 W/mK.

A vehicle brushless alternator assembly comprising: a claw pole rotor assembly having a pair of opposing pole pieces, the rotor defining an axis of rotation, each of the pole pieces having a plurality of circumferentially spaced pole fingers extending axially, the pole fingers of the rotor alternating between north and south magnetic polarities upon energization of the field coil; a cylindrical stator comprising armature enveloping the magnetic claw poles, the stator arranged coaxially relative to the drive shaft; a field coil structured to be positioned coaxially within an internal cavity of said rotor to arrange the field coil in a spaced apart relationship relative to internal walls defining the internal cavity of the said rotor; and a housing assembly surrounding said cylindrical stator with the drive shaft being supported by the housing assembly wherein the field coil is fixedly mounted to the housing assembly.

A rotary electric machine includes a stator, a rotor, and a field coil; the rotor includes a first magnetic pole having a first annular portion and a plurality of claw portions and a second magnetic pole having a second annular portion and a plurality of projection portions; in the rotor, the claw portions and the projection portions are circumferentially alternately positioned, and the first magnetic pole and the second magnetic pole are maintained in a non-contact state by providing a radial gap, a circumferential gap, and an axial gap between the first magnetic pole and the second magnetic pole; and the gap arrangement member has an axial positioning portion that is axially locked with respect to at least one of the first magnetic pole and the second magnetic pole, and axially positions the first magnetic pole and the second magnetic pole.

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.

An insulating device (10) of a rotor winding, which includes a device for positioning the insulator relative to a pole wheel including teeth and spaces between the teeth, which comprises at least two feet (102) on a surface (101) of the insulator that engages with a surface of the pole wheel, the feet each having at least two separate contacts among the following contacts: contact on a side surface of one tooth; contact on a side surface of an adjacent tooth; contact on an interstitial surface between one tooth and the adjacent tooth.

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.

A vehicle brushless alternator assembly that includes a claw pole rotor assembly having a pair of opposing pole pieces. The rotor defining an axis of rotation, each of the pole pieces having multiple circumferentially spaced pole fingers extending axially. The pole fingers of the rotor alternating between north and south magnetic polarities upon energization of a field coil. The assembly including a cylindrical stator including armature enveloping the magnetic claw poles, the stator arranged coaxially relative to the drive shaft. The field coil positioned relative to said rotor to generate magnetic flux and the field coil including a first field winding electrically connected with a second field winding by a switch such that: in a first operable configuration the switch operates to electrically connect the field windings in series during energization and in a second operable configuration the switch operates to electrically connect the field windings in parallel during energization.

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.