An electrical collecting and distributing member holding structure is composed of a stator including a multiplicity of cores arranged annularly, windings wound around the multiplicity of cores respectively, and an insulator for electrical insulation between the cores and the windings, a plurality of annular electrical collecting and distributing members held around the stator to collect and distribute electric current to the windings, and a holding portion formed on the insulator. The plurality of electrical collecting and distributing members are being held in the holding portion.

A resolver has a lead wire that can be slack even in a structure in which it is impossible to maintain the distance between an end of wound wire and a terminal pin without using a special jig. A lead wire of a stator coil 500 is entwined on a plurality of terminal pins 603 in a slack condition, and the entwined parts are fixed by soldering or welding. Terminal base 600 is then moved to a stator core 200 side, and the lead wire is made slack by contacting the lower surface of a terminal base body 601 to the upper surface of the stator core 200. Next, end part of the pins 306 of a primary insulator 300 are melted so as to fix the terminal base 600.

An electric motor is disclosed having a detachable stator tooth. In some implementations, coil windings of the electric motor may be coupled to one or more drivers independently of other coil windings. A method of repairing and manufacturing an electric motor having a detachable stator tooth is also disclosed.

To provide a stator of a motor having an insulating structure achieving insulation easily and reliably. A stator (1) of a motor comprises: a teeth unit (11) with a circular cylindrical part (111) having a circular cylindrical shape and multiple projection parts (112) spaced uniformly along an outer circumference of the circular cylindrical part (111) in a circumferential direction of the circular cylindrical part (111), the projection parts (112) projecting radially outwardly from the circular cylindrical part (111); multiple bobbins (13) having cylindrical shapes with hollow sections (133) through which the projection parts (112) of the teeth unit (11) are passed to be fitted in the hollow sections (133), the bobbins (13) having outer peripheries around which windings (14) are wound; a cylindrical external unit (12) arranged radially outside the teeth unit (11) and fitted to an outer circumference of the teeth unit (11) and the outer peripheries of the bobbins (13); and multiple first insulating parts (15) arranged to fill gaps between the circular cylindrical part (111) of the teeth unit (11) and the bobbins (13) and electrically insulating the teeth unit (11) and the windings (14).

To provide a stator of a motor having an insulating structure achieving insulation easily and reliably. A stator (1) of a motor comprises: a teeth unit (11) with a circular cylindrical part (111) having a circular cylindrical shape and multiple projection parts (112) spaced uniformly along an outer circumference of the circular cylindrical part (111) in a circumferential direction of the circular cylindrical part (111), the projection parts (112) projecting radially outwardly from the circular cylindrical part (111); multiple bobbins (13) having cylindrical shapes with hollow sections (133) through which the projection parts (112) of the teeth unit (11) are passed to be fitted in the hollow sections (133), the bobbins (13) having outer peripheries around which windings (14) are wound; a cylindrical external unit (12) arranged radially outside the teeth unit (11) and fitted to an outer circumference of the teeth unit (11) and the outer peripheries of the bobbins (13); and multiple first insulating parts (15) arranged to fill gaps between the circular cylindrical part (111) of the teeth unit (11) and the bobbins (13) and electrically insulating the teeth unit (11) and the windings (14).

An armature for a rotary electric machine includes: a core that includes a plurality of teeth that are arranged at a predetermined pitch in a circumferential direction; and a plurality of edgewise coils that are configured by winding a rectangular conductor wire into an edgewise winding, the plurality of edgewise coils each include rectilinear portions and coil end portions that are arranged radially, and that are each linked by bent portions, the rectilinear portions are arranged radially on circumferential side portions of the teeth so as to be gradually further away from a central axis of the teeth from a tip end of the teeth toward a root, and radially adjacent portions of the rectangular conductor wire are configured such that bulging portions that arise due to compressive stresses resulting from bending at inner peripheral side portions of the bent portions do not face each other.

A coil includes a wound body and a resin covering. The wound body is configured by winding a conductor. The wound body is pressure-molded. The resin covering covers a surface of the wound body.

In a rotor of a rotary electric machine including a pair of gutter-shaped concave portions which are formed along a side surface positioned at the outside of an axis of field-magnet core components so as to install and protect a pair of lead wires, balance-correction concave portions formed by a molding die are provided at shoulders of claw-shaped magnetic poles being nearest to the gutter-shaped concave portions in claw-shaped magnetic poles arranged at positions which are evenly separated at least in a circumferential direction with respect to the pair of gutter-shaped concave portions.

A brushless direct-current motor is provided includes an inner stator and an outer rotor. A rotor shaft extends through a stator core of the inner stator. A first end cap includes a radial back plate disposed on a first side of the stator and a front center opening through which the rotor shaft is supported via a front bearing. A second end cap includes an inner annular body extending axially inwardly and forming a rear center opening, an outer annular body, and a main body extending on a second side of the stator. The inner annular body includes a first portion that extends at least partially into an opening of the stator core and supports the rotor shaft via a rear bearing, and a second portion rearward of the first portion that received a rear end of the rotor shaft therein and houses a sensor board therein.

The rotating electrical device has a motor, a bearing holder, and a busbar unit. The busbar unit has a plurality of busbars, and an electrically insulating busbar holder enclosing the plurality of busbars. The plurality of busbars are electrically connected to the plurality of coils, respectively, and inserted, on the bearing holder side of the busbar holder, through each of the plurality of terminal through-holes in the bearing holder, and the busbar holder is configured to enclose the periphery of a part where the plurality of busbars are inserted through the terminal through-holes.