Abstract: An electric rotary machine includes a stator, which Is fixed to a housing, composed of a stator core having a coil end protruding at an end face of the stator core, a rotor core formed by laminating core sheets, and a rotor having a pair of rotor side-plates sandwiching both end faces of the rotor core. The rotor core is rotatably supported in the housing facing an inner peripheral surface of the stator with a gap between the rotor core and the stator. Either one or both of the rotor side-plates has a concave surface in an outer surface of the side-plate that does not abut the rotor core. An axial distance from the end face of the rotor core to the concave surface increases from an inner diameter side to an outer diameter side.

Abstract: A rotor of a dynamoelectric machine is provided, the rotor comprising a shaft, an essentially cylindrical armature, an armature coil comprising aluminum coil wires and a drum commutator, which comprises an insulating support body and conductor segments which are attached to said support body and fixed therein by means of armature sections. Said conductor segments each comprise a copper running surface area and a connection area made of aluminum or a metal which can be soldered with aluminum (aluminum-compatible metal) having a soldering tag which greatly projects over the brush running surface. Said coil wires are soldered to the end side to the soldering tag of the respectively associated conductor segments and to be precise, without directly contacting the areas of the running surface.

Abstract: A wheel for a roller coaster or other amusement ride vehicle includes a self-contained illumination system. The wheel comprises a hub through which an axle is disposed, a web extending from the hub and including a plurality of apertures, and an annular seat at a periphery of the web for receiving a tire thereon, the annular seat cooperating with the hub and the web to define an annular cavity. A PCB is disposed in the annular cavity and has a plurality of LEDs aligned with the plurality of apertures on the web. A permanent magnet generator within the wheel powers the PCB and the LEDS, the generator completely confined to the interior of the wheel.

Abstract: An interior permanent magnet electric machine is described, and includes a stator including a plurality of electrical windings and a rotor disposed in a cylindrically-shaped void formed within the stator. The rotor includes a plurality of steel laminations assembled onto a shaft, wherein the shaft defines a longitudinal axis. Each of the steel laminations includes a plurality of poles and each of the poles includes a plurality of slots disposed near an outer periphery. The slots of the steel laminations are longitudinally aligned. A plurality of permanent magnets are disposed in a first subset of the slots, and plurality of packets assembled from anisotropic material are disposed in a second subset of the slots.

Abstract: The invention relates to a slot sealing material (7) for an electric machine, which for accommodating an electric conductor arrangement (3) comprises at least one slot (2) having a slot opening (5). Said slot sealing material contains a magnetic filler, especially a soft-magnetic filler, and a reaction resin mixture comprising at least one resin component and a curing agent component. To improve the temperature resistance and mechanical strength of the slot sealing material, a dianhydride is used as curing agent component.

Abstract: In one example, an electrostatic spray gun includes a spray tip assembly, an alternator, an electrode, and at least one controller. The alternator includes a stator having an inner diameter and an outer diameter. The alternator further includes a rotor disposed within the inner diameter of the stator and configured to rotate within the stator to cause the alternator to generate alternating electrical current. The electrode, positioned proximate the spray tip assembly, is coupled to receive electrical energy from the alternator. The at least one controller is coupled to the alternator and is configured to output a representation of a rotational speed of the rotor.

Abstract: A drive apparatus includes a motor having a drive part that rotates a first shaft member; a transmission part that transmits rotation of the first shaft member to a second shaft member which is different from the first shaft member; a first detection device provided at the first shaft member to detect information regarding rotation of the drive part; a second detection device provided at the second shaft member to detect information regarding rotation of the transmission part; and a prevention part that prevents movement of foreign substance toward a detection part which includes at least one of the first detection device and the second detection device.

Abstract: An elastic member is provided in the present disclosure. The elastic member includes a first elastic part for providing a first amplitude and a second elastic part connected to the first elastic part for providing a second amplitude. The first elastic part includes a first connecting part and a first connecting arm extending from the first connecting part; the second elastic part includes a second connecting arm and a second connecting part extending from the second connecting arm; the second connecting part is parallel to the first connecting part, the second connecting arm extends substantially towards the first connecting parts. A vibrating motor using the elastic member is also provided in the present disclosure.

Abstract: An armature for a rotating electric machine is provided. The armature includes a wedge that prevents separation of coils by supporting the coils disposed at left and right sides in a slot while closing an opening in the slot in which the coils are wound is provided. The wedge includes a body portion that is inserted into the slot, and has a “V” shape. Both ends of the body portion are coupled to latch grooves adjacent to a core, and separation prevention portions form bent regions at both ends of the body portion and are integrally connected to the body portion. The separation prevention portions are arranged adjacent to each other in the slot, and support the body portion.

Abstract: A part for uncoupling a motor and a motor mounting part thereof, that includes a rigid connecting part that is to be coaxially placed in a central portion of a stator core and includes a central ring for receiving a rotatable shaft of a rotor of the motor, from which at least two arms extend, free ends of which are intended to abut against an inner wall of the stator core and form at least two spaces for placing a flexible uncoupling pad that radially extends from an outer surface of the central ring of the rigid connecting part, against which the uncoupling pad abuts, to a rigid assembly tab that is to axially extend into the central portion of the stator core, near the inner wall of the stator core, while being rigidly connected to the motor mounting part.

Abstract: The invention concerns an electrical connection device (5) for a compressor, the electrical connection device (5) comprising a connection block (7) for connection to an electric motor (2) of the compressor, a plurality of removable electrical connection elements (72) fitted in a triangle in said connection block (7) to engage with a connection terminal (6) of a control device (1) of said electric motor (2) and at least one electrically insulating element (8) removably mounted on the connection block (7) in such a way as to insulate the electrical connection elements (72) from a wall separating the control device (1) from the electric motor (2), said electrically insulating element (8) being configured to provide a stop for said electrical connection elements (72) when said connection block (7) is inserted into said electrically insulating element (8). The invention also concerns a compressor comprising such an electrical connection device (5).

Abstract: A rotary device having a brush that includes a slide-contact portion, a fixing section, and a conductive bonding material. The conductive bonding material bonds together the slide-contact portion and the fixing section. The conductive bonding material is composed of an intermetallic compound phase that is an alloy containing one of (1) at least two selected from a first group consisting of Sn, Cu and Ni, and (2) at least two selected from a second group consisting of Sn, Cu, and Mn.

Abstract: A motor is provided for use in a machine. The motor includes a segmented stator comprising magnetically isolated core segments.

Abstract: A rotary electric machine includes: a rotor rotating about an axis; a stator formed by annularly combining cores having electric wires wound therearound and placed on the outer side of the rotor in a direction orthogonal to the axis; and an insulator including an outer portion placed on the radially outer side of the stator; an inner portion placed on the radially inner side of the stator; a trunk portion coupling the outer portion and the inner portion and having the electric wire wound therearound; a recess portion formed in a portion of the outer portion facing the inner portion to accommodate the electric wire; and a wall placed at the recess portion on the side of the inner portion to partially cover the recess portion. The insulator is attached to one end portion of the cores in a direction parallel with the axis.

Abstract: A hybrid electrical machine containing surface mounted magnets which includes a magnetically permeable cylindrically shaped stator assembly having at least one stator winding formed about a plurality of stator teeth, a rotor assembly concentrically disposed within the stator assembly, including a magnetically permeable rotor backiron, a rotational drive mechanism coupled to the rotor backiron, and a plurality of protruding rotor poles, each including a magnetically permeable pole support assembly, a winding provided around the pole support assembly, and a radially magnetized permanent magnet assembly disposed about the pole support assembly.

Abstract: In a mechanically and electrically integrated rotary electric machine, a motor portion and an inverter portion are inserted inside a cylindrical frame. The motor portion has a plurality of coils. The inverter portion has a plurality of switching elements. The coils and the switching elements are electrically connected by a connector. The connector has: an end portion connector that distributes sinusoidal electric currents from the switching elements to the respective coils; and a plurality of axial connectors that direct the sinusoidal electric currents from the switching elements to the end portion connector. The end portion connector is disposed on an end portion of the motor portion near an output shaft. The axial connectors are disposed parallel to an axial direction of the frame so as to pass from the switching elements through a mounted region of the motor portion.

Abstract: Provided is a fluid dynamic bearing device (1) including a rotary body (2A), a bearing member (22) (sleeve portion) made of a sintered metal arranged on the rotary body (2A), having end surfaces (22b, 22c), a thrust bearing gap formed by a lower end surface (22c) of the bearing member (22), filled with lubricating oil (11), and a thrust dynamic pressure generating portion (B). A dynamic pressure generating action is caused in the lubricating oil in the thrust bearing gap along with rotation of the rotary body (2A) to support the rotary body (2A) in one thrust direction in a non-contact manner. The bearing member (22) has an oil permeability of 4% or more with respect to a mass flow rate of the lubricating oil (11) flowing along the thrust dynamic pressure generating portion (B) during the rotation of the rotary body (2A).

Abstract: The motor according to the present disclosure comprises a rotary unit, a stationary unit disposed around the rotary unit, and a bearing mechanism which rotatably supports the rotary unit relative to the stationary unit. The rotary unit comprises a plurality of magnets. The stationary unit comprises a stator disposed around the rotary unit, and a cover which is electrically conductive and covers a top surface of the stator, and the stator comprises a stator core which includes a plurality of teeth and a core back, and a coil which is wound around the stator core via an insulator. The cover has openings on at least one area of a circumferential interval between neighboring teeth when seen in a top view, and the cover is connected to a ground potential.

Abstract: A PM stepping motor includes a two-phase stator which includes first and stator stators, and a rotor which is rotatably supported inside the two-phase stator. Each of the first and second stators includes an outer yoke, an inner yoke and a coil. Each of the first and second stators is formed with a convex portion and a concave portion. The convex portion formed on the inner yoke of the first stator is engaged with the concave portion formed on the inner yoke of the second stator. The inner yoke is formed with two protrusions engaged with a cutout of the outer yoke. The convex portion and the concave portion are arranged line-symmetrically with respect to a center line passing through a center point of the inner yoke and a center position between the two protrusions, and an angle ? between each position and the center line ranges 30°<?<90°.

Abstract: An induction generator (100) is proposed, having at least one permanent magnet (130) for generating a permanent magnetic field (138), at least one reflux plate (106) for guiding the permanent magnetic field (138), a coil (108) and a spring element (104), wherein the permanent magnet (130) and the reflux plate (106) are separated from one another by an air gap (140) through which the permanent magnetic field (138) passes, and wherein the coil (108) is connected to the spring element (104) and is movably disposed in the air gap (140), characterized in that the spring element (104) is designed to cause an oscillation movement of the coil (108) in the air gap (140) transverse to a magnetic flux of the permanent magnetic field (138) inside the air gap (140) in response to a deflection of the coil (108).