Abstract: A support plate is accommodated in the interior of a casing, the support plate having a bearing member that rotatably supports a rotating shaft of a brushless motor, together with supporting a circuit substrate on which a control circuit is provided. The casing is constituted by combining a lower side half body and an upper side half body. A second flow passage through which cooling air (air) is allowed to flow is formed in the lower side half body, and a protrusion is provided therein, which serves as a guide member for guiding the cooling air toward the side of (a first flow passage of) the upper side half body.

Abstract: A PMDC motor includes a housing, a stator magnet fixed to the inner circumferential surface of the housing, a rotor core received in the housing and facing the stator magnet, and rotor windings wound around the rotor core. The rotor core includes a plurality of rotor teeth, each of the rotor teeth including a tooth body and a tooth tip. A ratio of the outer diameter of the rotor core to an outer diameter of the housing is in the range of 0.6 to 0.67. Compared to the existing PMDC motor, the PMDC motor of the present invention can satisfy the same performance requirement, while reducing the size and weight of the rotor core and hence the weight of the rotor windings. In this way, the total weight and hence the moment of inertia of the rotor is reduced, thereby effectively reducing the noise generated during operation of the motor.

Abstract: A magnet for transporting a particle beam in a target magnet field may include a first set of coils and a second set of coils. According to some aspects, the first and second set of coils may be configured to generate a combined desired magnetic field within the bore and may be configured to generate a combined magnetic field weaker than the desired magnetic field outside the bore.

Abstract: An electromagnetic switch includes a first and a second solenoid arranged in alignment in an axial direction of a housing and brings a pinion into mesh with a ring gear of an engine and close main contacts in a power supply circuit for an electric motor which cranks the engine. A retainer is provided which extends from a first bobbin of the first solenoid at least to a location of an air gap formed in a magnetic circuit of the second solenoid. The retainer holds a portion of a lead wire extending from a bobbin of the first solenoid at least in a range between the bobbin and the air gap, thereby minimizing inclination or deflection of the lead wire when the first and second solenoids are fabricated within the housing, thus facilitating the ease with which the first and second solenoids are mounted in place in the housing.

Abstract: An electric motor including a rotor, rotating about an axis of rotation, and a stator, coaxial to the rotor. The stator has a casing. A body incorporates a controller of the electric motor. The body is placed outside the stator and parallel to the axis of rotation in a position substantially tangent to the casing of the stator. The rotor includes a first and second cooling fan, keyed on respective first and second axial ends of the rotor, opposite along the axis of rotation. The first and second cooling fans generate respectively, with the rotation of the rotor, a first and a second flow of cooling air independent of each other. The first flow of cooling air is directed toward the first axial end of the rotor, and the second flow of cooling air is directed towards the body so as to cool down the controller.

Abstract: A flexible high-power control device is disclosed for controlling at least one high-power electrical generating/consuming device which has a plurality of electrical terminals and a housing with a non-planar surface and is thermal-conductively connected to an active cooling unit. The flexible high-power control device comprises a flexible thermal-conductive interfacial insulation substrate, at least one circuit layer, and at least one electronic element. The interfacial insulation substrate is attached to the non-planar surface of the electrical generating/consuming device. The circuit layer, which is disposed on the interfacial insulation substrate, includes a plurality of electrical terminals which are electrically connected to the electrical terminals of the electrical generating/consuming device. The electronic element is electrically mounted on the circuit layer to form a control circuit for controlling the electrical generating/consuming device.

Abstract: A drive mechanism including a brushed motor comprises a brushed motor including a commutator having a plurality of commutator segments and a brush contactable to the plurality of commutator segments, a movable member driven by the brushed motor, and a stopper member configured to stop rotation of the brushed motor by contacting the movable member. In a state in which the movable member contacts the stopper member to thereby stop the rotation of the brushed motor, the brush contacts only one of two adjacent commutator segments of the plurality of commutator segments.

Abstract: A superconductive magnet coil assembly includes a layer-wound coil that is cylindrically symmetric, wherein the rectangular coil cross section of the coil has a first rectangular portion (1; 1?; 1?; 1??) within the coil cross section, and at least one second rectangular portion (2; 2?; 2?; 2??) and third rectangular portion (3; 3?; 3?; 3??) within the first portion which spans the first portion completely in the radial direction and in part in the axial direction, the second portion being completely wound with the first strip-like superconductor, and the third portion being completely wound with the second strip-like superconductor, and the strip-like superconductors being guided into a region outside the coil cross section and being electrically connected there, and wherein the second and the third rectangular portions are disjunct.

Abstract: Switch apparatus (54), designed to detect relative movement between first and second members (60, 62), includes a switch assembly (48) comprising a switch unit (20), a biasing element (50), and an operating member (52). The unit (20) has a conductive housing (22) with first, second, and third electrical pin contacts (36-40) and a shiftable body (46). The body (46) is magnetically correlated with both the element (50) and operating member (52). When the members (60, 62) are close, the operating member (52) maintains the shiftable body (46) in one switch position, whereas when the members (60, 62) are separated, the biasing element (50) magnetically moves body (46) to another switch position, thereby detecting the relative movement).

Abstract: An electronic switch module for a power tool having an electric motor is provided, including a printed circuit board (PCB), power switches mounted on the PCB and configured to switchably supply electric power from a power source to the electric motor, a series of primary heat sinks mounted on the PCB in association with the power switches, and a secondary heat sink mounted on the primary heat sinks and securely fastened to at least one of the primary heat sinks via a fastener, the secondary heat sink being electrically insulated from at least one of the primary heat sinks.

Abstract: A motor includes: a stator; a rotor axially aligned with the stator; a circuit board; and a heat dissipating plate. The stator includes: an iron core including teeth; an insulator covering one end surface, in the axial direction, of the iron core; and a coil wound around the teeth. The insulator includes an electrically insulating material having a lower rate of heat transfer than a material included in the iron core. The heat dissipating plate is attached to the insulator in a state in which the heat dissipating plate is in contact with the insulator without being in contact with the iron core, and the circuit board is attached to the heat dissipating plate in a state in which the circuit board is in contact with the heat dissipating plate without being in contact with the iron core.

Abstract: A movable member is configured to switch, by rotation, between a first state and a second state. In the first state, the movable member presses a plurality of first movable contact pieces to bring first contacts into contact with first substrate side contact points. When the movable member is in the second state, the first contacts are separated from the first substrate side contact points. A coil block includes a coil and causes the movable member to rotate by electromagnetic force generated by energization of the coil. A rotation axis of the movable member is parallel to an axis of the coil. The plurality of first substrate side contact points is arranged side by side in an axial direction of the coil on a first base substrate. The plurality of first movable contact pieces is arranged side by side in the axial direction.

Abstract: A movable spring plate structure for defining an open or closed state with respect to a fixed contact includes a rigid spring plate contact portion, a soft spring plate warp portion, a soft spring plate force-applying portion and a movable contact. The soft spring plate warp portion is coupled to the rigid spring plate contact portion, and a first deformation gap is formed between the rigid and soft spring plate contact portions. The rigid spring plate contact portion is harder than the soft spring plate warp portion. The soft spring plate force-applying portion is disposed at the soft spring plate warp portion, and the movable contact is disposed at the rigid spring plate contact portion. A force applied to the soft spring plate force-applying portion drives the movable and fixed contacts into a closed state.

Abstract: A motor bearing arrangement for a motor (22) of a fan (20) of a vehicle air-conditioning unit has a frame (16), a support (26) which partially overlaps the frame (16) at least in a connecting region, and multiple damping elements (36) which are provided between the frame (16) and the support (26) in the connecting region, wherein the support (26) is held on the frame (16) by means of the damping elements (36).

Abstract: A reciprocating tool includes a motor, a reciprocating member, and a crank mechanism. The motor is disposed in a housing. The reciprocating member projects from the housing. The crank mechanism converts rotation of a rotation shaft of the motor into reciprocation of the reciprocating member. The crank mechanism rotates around an axis in a lateral direction by rotation transmission from the rotation shaft, and the crank mechanism includes a crank member having an eccentric pin, a connecting rod coupling the eccentric pin to the reciprocating member, and a balancer coupled to the eccentric pin, and the balancer is supported by the eccentric pin alone in the housing.

Abstract: According to the present disclosure, a controller includes a base and a continuous sealing layer connected to the base forming an environmentally sealed compartment between the base and a lower surface of the continuous sealing layer. A circuit board is positioned within the compartment, and a rotary knob encoder is positioned on an upper surface of the continuous sealing layer. Movement of the rotary knob encoder is detectable by the circuit board through the continuous sealing layer.

Abstract: Certain aspects relate to a bus bar unit for providing three phases of electric current to the windings of the stator of an electric machine while structured to have a compact footprint for fitting within the enclosure of the electric machine. Each winding can have a phase lead end and a neutral end extending above one face of the stator. The bus bar unit can include three phase lead bus bars and a neutral bus bar each having a planar branch with legs extending from the planar branch, each leg having a slot at an end thereof for electrically coupling with either the phase lead or the neutral end of one or more of the windings. The planar branches can be stacked such that they overlap from a top-down perspective but are spaced apart from a side perspective.

Abstract: An electric drive unit for a hybrid drive, in particular for a vehicle, has an increased power output and degree of efficiency, while thermal loading as well as required installation space and manufacturing costs are minimized. The electric drive unit has an asynchronous machine with a rotor with a rotor cage, in particular a rotor cage which is formed with copper conductors. The asynchronous machine is formed with a stator having a shaft winding. The shaft winding is formed with a device for star-delta changeover. The rotor is formed with a rotor internal cooling device. A step-up gear mechanism is arranged in a power train between the rotor and the output element. There is also described a hybrid drive device with an electric drive unit, and a vehicle that has an electric drive unit and/or a hybrid drive device.

Abstract: Techniques for forming and adjusting a magnetic tension mechanism are described herein. A system includes a first magnetic element in a first component of a computing device. The system includes a second magnetic element in a second component of the computing device, wherein the first magnetic component and the second magnetic component are to be held in tension by a magnetic force. The system also includes an adjustment mechanism to adjust the force required to decouple the magnetic elements.

Abstract: A contact spring for a cradle relay of an electrical switch comprises a switching leg and a hook extending from the switching leg. The switching leg has a contact. The hook has a first tongue bent back toward the switching leg.