1198results about "Magnetic circuit characterised by insulating materials" patented technology

PCT No. PCT/JP96/02929 Sec. 371 Date Jun. 25, 1998 Sec. 102(e) Date Jun. 25, 1998 PCT Filed Oct. 9, 1996 PCT Pub. No. WO97/26700 PCT Pub. Date Jul. 24, 1997A motor mounted in a vehicle having a winding comprising a flat band-like copper wire is provided. The winding is wound on a projection that extends radially inward of a stator. The winding includes a first band-like section that is adapted to be wound on a radially inward portion of the projection of the stator. The winding also includes a connection section that is continuous with one longitudinal end of the first band-like section and extends radially outward along the radial direction of the projection of the stator. The winding further includes a second band-like section that is adapted to be wound on a radially outward portion of the projection of the stator. One longitudinal end of the second band-like section is continuous with the connection section. The first band-like section extends from a radially inward portion of the connection section and the second band-like section extends from a radially outward portion of the connection section. The first and second band-like sections extend from the connection section in opposite directions.

An AC generator for a vehicle including a rotor with a fan, a stator disposed around the outer periphery of the rotor, and a frame. The stator includes a laminated core having a plurality of slots, a plurality of electric conductors in the slots, and an insulator. There is a gap between the electric conductors and the insulator in a diametrical section of the slots, and an area ratio of the gap with respect to the sectional area of the slots is not more than 25%. A portion of the electric conductor positioned within the slot has a substantially rectangular shape along the shape of the slot.

A blower assembly comprises a blower housing having a stator assembly integrally formed therewith. The stator assembly includes a stator bore having a rotor magnet rotatable therewithin such that the motor assembly is configured as a brushless D.C. motor. An impeller is mounted on a motor shaft of the motor assembly and has a plurality of vanes extending upwardly therefrom. Each one of the vanes has a vane height which is optimized to minimize the formation of fluid eddy losses during compression of air by the impeller. A bearing assembly rotatably coupling the rotor magnet to the stator assembly is sized and configured to maintain an air gap of approximately 0.0002 inches between the vanes and a housing interior surface of the blower housing during rotation of the impeller.

A fan structure includes a frame, a cover, a stator structure and a base. The cover and the frame are integrally formed as a single piece. The stator structure is disposed in the cover and the base is connected to the cover. Thus, the stator structure is located between the cover and the base.

An inner rotor type molded motor controlled by pulse width modulation using an inverter circuit includes a pair of electrically conductive brackets attached to a load-side portion and an anti-load-side portion of a motor frame. An electrically conductive tape is attached on the outside of the motor frame to extend between the brackets, thereby short-circuiting the brackets to each other. In this manner, electrical erosion in the molded motor can be prevented.

A rotating electric machine, comprising a stator, a rotor, a case storing the stator and the rotor, and an oil pump. Oil discharge ports are formed at the terminal part of an oil discharge passage of the case, and a cooling oil is supplied to the upper cutout parts of the stator. A groove part is covered by a cover to form a closed flow passage. Since the cooling oil is sufficiently applied to the portion of a coil exposed to the inside of the flow passage, a cooling efficiency is increased. Also the cooling oil is guided to an orifice on the lower side in the gravitational direction. Accordingly, since the cooling oil does not flow in an air gap between the rotor and the stator, a power loss can be prevented from occurring.

A bus bar secured to a stator in an electric motor in a preferred embodiment according to the invention includes four wiring boards, which are arranged perpendicularly to a center axis at intervals in a direction toward the center axis, and a resin portion for covering the surroundings of the four wiring boards by injection molding. Resin passing holes, through which a resin flows when the resin portion is molded, are formed at each of the wiring boards. When the bus bar is molded, the resin is injected into a resin molding die in a state in which the four wiring boards are supported by supporting pins disposed inside of the die. The resin flows to and fro between a space defined between the die and the wiring board and a space defined between the adjacent wiring boards.

A motor including an outside rotor having a rotor disc with plural magnets alternating polarities flush mounted in the disc, an inside stator assembly with a ring of pole pieces forming a channel to house a transversely wound stator windings, and a controller coupled with feedback electronics for monitoring a timing, speed and direction and coupling a signal to a processing unit for adjusting the drive electronics driving the phase windings. A u-shaped gap above the channel to receive the rotor disc and focus the captured magnetic flux in the pole pieces toward the magnets. In an embodiment the molded magnetic flux channel pole pieces of the inside stator are sets of molded magnetic flux channel pole pieces, each set forming a channel and corresponding to one phase of the motor; and a section of each one of the transverse windings passing through one channel, the remaining section folding back outside the set in close proximity to the outer base of the set of molded magnetic flux channel pole pieces.

A stator is compatible with a variety of wiring configurations and possesses excellent versatility, while also preventing an increase in the size of a busbar unit. The stator includes a plurality of stator segments joined together to assume a cylindrical shape. Each stator segment includes a core segment including a core back portion and a tooth portion; a coil including a pair of coil wire terminals; an insulating layer arranged between the coil and the tooth portion; and a resin layer arranged to have the entire coil except for the coil wire terminals embedded therein. The resin layers of the stator segments include a supporting structure defined therein to allow a wiring member to be connected with any of the coil wire terminals to be attached to and removed from the stator.

A stator includes an annular stator core and a stator coil. The stator coil is formed of a plurality of electric wires mounted on the stator core. The stator coil has a coil end part that protrudes from an axial end face of the stator core so as to be located outside slots of the stator core. The electric wires forming the stator coil are grouped into a plurality of electric wire sets. Each of the electric wire sets consists of a predetermined number of the electric wires which are electrically connected to one another. The stator coil further includes a plurality of bridging wires. Each of the bridging wires extends, on an axially outer periphery of the coil end part of the stator coil, to electrically connect a corresponding pair of the electric wire sets. Further, at least two of the bridging wires are fixed to one another.

A method and a device are for positioning and affixing magnets on a magnetic yoke member of an electric motor. The device includes: a nonmagnetic support for receiving the magnets, this support having a shape complementary to that of the magnetic yoke member on which the magnets are to be affixed; a magnetic element for holding the magnets in position on the nonmagnetic support, this element being arranged on the other side of the nonmagnetic support with respect to the magnets, the attraction exerted by this element on the magnets being greater than that exerted by the magnetic yoke member during the positioning of the device with respect to the yoke; a device for varying the magnetic forces present, whereby the magnetic attraction of the magnetic yoke member and/or the magnetic element on the magnets may be varied such that the magnetic force of attraction exerted by the yoke on the magnets becomes greater than that exerted by the magnetic element on them, thus provoking the transfer of the magnets to the yoke. The yoke member forms the magnetic path of a linear motor.

A stator of a rotary electric motor has core segments. All or some of the core segments have terminal mounting members for mounting terminals to which coils are connected. The terminal mounting member and the bobbin for each of the core segments are molded by resin and integrated with the corresponding core segment.

There is provided an axial air-gap electronic motor in which work for assembling a stator can be performed efficiently. A locking protrusion 26 is provided on a flange portion 24 of core members 21a to 21i which are divided for each teeth 21 and are arranged in a ring form with the rotating shaft axis line being the center, and a connecting member 8 is fitted on the locking protrusion 26, by which the core members 21a to 21i are connected to each other in a ring form.

A rotor assembly for an electric motor includes a spoke permanent magnet rotor and a shaft connected thereto. The spoke permanent magnet rotor has an axis of rotation, permanent magnet material, and ferro-magnetic material. The permanent magnet material extends outwardly relative to the axis of rotation to form a plurality of outwardly extending spoke portions of permanent magnet material. The ferro-magnetic material is positioned adjacent to the outwardly extending spoke portions of permanent magnet material. The shaft supports the spoke permanent magnet rotor for rotation about the axis of rotation. The permanent magnet material may circumferentially surround the axis of rotation to form a center portion of permanent magnet material. Further, the axis of rotation may pass through the permanent magnet material. The spoke permanent magnet rotor may be formed using a compaction process and/or an injection molding process.

A stator for a rotary machine includes a rotor 7 and a stator 8 having a stator iron core 15 disposed oppositely around the outer circumference of the rotor 7 and a stator coil 16 fitted around the iron core 15, wherein the iron core 15 has a laminated iron core 150 with plural axially extending slots 15a formed circumferentially at predetermined pitches, an insulating resin 100 is coated on an axial end face 15f of the iron core 15 and an inner wall face of a slot 15a in the laminated iron core 150 to provide insulation between the iron core 15 and the stator coil 16, and the iron core is cylindrically shaped by bringing both circumferential end portions 15g of the laminated iron core 150 into contact to bend the laminated iron core 150 so that an opening face 15b of the slot 15a is directed inside.

A motor adapted to rotate an element of an appliance, for example, a drum of a washing machine, is disclosed. The motor includes a rotating shaft which is rotatably mounted to a motor mounting member of an appliance, a rotor which includes magnets circumferentially arranged at a position radially spaced apart from a center of the rotating shaft by a predetermined distance such that N and S poles are alternately arranged, and a stator which includes a core made of metal, an insulator enclosing the core while allowing a surface of the core facing the magnets of the rotor to be outwardly exposed, the insulator being made of an insulating resin material, coils wound on the insulator, and a circular molded member formed in accordance with an insert molding method to enclose the insulator and the coils while allowing the surface of the core outwardly exposed through the insulator to be outwardly exposed.

A stator structure includes a stator assembly and a protective body, and the stator assembly is covered by the protective body. Additionally, a manufacturing method of the stator structure, which includes the steps of providing a stator assembly, providing a mold, disposing the stator assembly in the mold, applying a filler into a space defined between the mold and the stator assembly, and removing the mold to form the stator structure with the protective body, is also disclosed.