Sanyo Denki Co., Ltd.

Kouji Nakatake

Yasushi Yoda

Masaaki Ohashi

Masaaki Oohashi

Zhang Hong

Yukio Miura

Syogo Yoda

Mitsuaki Shioiri

Kazuhiro Yoda

Youichi Horiuchi

Provided is a motor stator which includes: a ring-shaped stator core; a plurality of tooth portions protruding inward from the stator core; an insulator made of an insulating material and mounted on the plurality of tooth portions; a stator coil wound around each of the plurality of tooth portions via the insulator; a lead wire; and a connection portion connecting the stator coil and the lead wire, in which the insulator includes a connection housing portion housing the connection portion.

Motor stator and method for manufacturing motor stator

A stator of a rotating armature is provided which has: a stator core comprising laminated electromagnetic steel plates, the stator core including a plurality of teeth and slots formed on an inner periphery thereof; a first insulator and a second insulator inserted in the stator core; and windings wound around the teeth, wherein the first insulator includes a first comb-like engagement portion placed in the slots, the second insulator includes a second comb-like engagement portion placed in the slots, the first comb-like engagement portion includes a first tapered shape formed on a first distal end portion thereof, the second comb-like engagement portion includes a second tapered shape and a third tapered shape formed each on either side of a second distal end portion thereof in a radial direction of the stator core, and the first end portion and second distal end portion overlap with each other in the radial direction.

Stator of rotating armature and assembly method thereof

A motor rotator includes: a rotor shaft configured to be journaled to a pair of bearing members of a motor device; and a rotor stack that includes a plurality of lamination plates and a plurality of small-diameter plates having an outer diameter smaller than an outer diameter of the lamination plates, the lamination plates and the small-diameter plates being stacked in an axial direction of the rotor shaft and integrated. The plurality of small-diameter plates forms a pair of bosses, the pair of bosses projecting from both sides of the plurality of lamination plates along the axial direction of the rotor shaft to abut on the pair of bearing members.

Motor rotator, motor device, and method for manufacturing the motor rotator

A stepper motor includes: a rotor including a rotor core and a permanent magnet, the rotor core including a plurality of teeth; and a stator arranged around the rotor while being spaced apart from the rotor and including a plurality of magnetic pole teeth, the magnetic pole teeth including a plurality of teeth and projecting toward the rotor. A winding is wound around every other magnetic pole tooth. A phase of the teeth of the magnetic pole teeth with no winding therearound is shifted from a phase of the teeth of the other magnetic pole teeth.

Stepper motor

A coil is wound via an electrically insulating member within a slot of a stator core of an electromagnetic motor which is formed of a stator and a rotor. Groove portions are formed to oppose one another in respective opposing portions of a slot opening portion side of the electrically insulating member. An electrically insulating sheet is disposed by being inserted into the pair of groove portions.

Coil insulating structure/bobbin with grooves for inserting insulating slot closer

Electrical insulation properties of winding start ends or terminal ends of insulating coating electric wires of coils wound around polar teeth of a stator core are improved, and creeping and spatial distances for electrical insulation are secured. Wall portions which project toward an interior of a radial direction or an exterior of an axial direction of a stator core and which have electrical insulation properties are formed in an inner peripheral portion of the stator core of a motor, groove portions are formed in the wall portions and winding start ends or terminal ends of insulating coating electric wires of coils are arranged in the groove portions.

Wiring structure of stator coil

There is provided a stator that can suppress degradation in insulating performance and electrical strength performance, shorten a work time, and improve winding efficiency and heat radiation. The statorincludes a yoke partformed to be annular, a plurality of tooth partsprotruding from the yoke partin an inward direction perpendicular to an axial direction O of a rotor when the rotor is arranged in the yoke part, and protecting memberseach of which is attached to both end surfaces of the tooth partin the axial direction O to protect a corner of the tooth part. The protecting membershave a length in a slotbetween the tooth partsshorter than a half of an entire length of the tooth partin the axial direction.

Stator and protecting member for stator

A stator is provided. The stator includes a yoke part of an annular shape, tooth winding portions that protrude inward from the yoke part and around which an electric wire is wound, and a tooth end portion formed on an inward side of the tooth winding portion. The stator is formed by stacking steel plates in a direction corresponding to a rotational axis of a motor. The tooth winding portion is formed by stacking the steel plates having different shapes such that at an end portion in the stacking direction, thickness of the tooth winding portions gradually decrease toward the end portion in the stacking direction, and the yoke part and the tooth end portion include protruding portions formed by stacking the steel plates, such that the protruding portions protrude from the tooth winding portion in the stacking direction.

Stator core with varied lamination shapes and sizes to reduce wire insulation stress

A pair of connecting wire hooks are disposed on both sides of a nozzle receiving groove in an extended slot space (a first extended space) to sandwich an extended portion of an extended virtual space (a third extended space). In this configuration, the pair of connecting wire hooks are not located within the third extended space. Thus, in the stator for rotary electric machine, the space factor of the winding portion may be increased in a situation where the connecting wire hook is disposed within the first extended space.

Stator for rotary electric machine

A stator for rotary electric machines is provided, in which a volume occupied by winding portions may be increased and a connecting wire may readily be engaged to prevent from coming off. A plurality of connecting wire engaging hooks, with which the connecting wire extending from the winding portion is engaged, are respectively disposed in the vicinity of border portions between a plurality of magnetic pole sectionsand a yoke, corresponding to the magnetic pole sections. A mounting location of a connectoron a circuit substrateis determined so that all of ends of a plurality of terminal conductors of the connector may be located between adjoining two of the connecting wire engaging hooks. With this arrangement, all of the endsof the plurality of terminal conductorsmay be disposed between adjoining two of a plurality of the winding portions, and be spaced from the winding portions

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Tokyo, Japan

Kouji Nakatake