Abstract: There is provided a linear vibrator, including: a fixed part providing an interior space having a predetermined size; at least one magnet disposed in the interior space and generating magnetic force; a vibration part including a coil facing the magnet and generating electromagnetic force through interaction with the magnet and a mass body; and an elastic member coupled to the fixed part and the vibration part to mediate vibrations of the vibration part and having a damping increasing portion attached to a predetermined region of a surface thereof.

Abstract: A torsional vibration damper is integrated into a rotating electrical machine. A rotatable assembly of the electrical machine includes a rotor core pack having a first end and a second end, The integrated torsional vibration damper consists of a torsional elastic coupling and a torsional elastic damper and provides mechanical damping. The integrated torsional vibration damper is mounted to the rotatable shaft of the electrical machine by a flange. The rotor core pack is mounted at the first end to the integrated torsional vibration damper by suitable structure members such as a mounting flange and is not fixedly mounted directly to the rotatable shaft. In the case where the rotor core pack is cooled by circulating coolant fluid (e.g. MIDEL) then the integrated torsional vibration damper may be a viscous damper that uses the coolant fluid as a viscous working, fluid.

Abstract: An apparatus (structure) is provided to support a superconductor winding (61) of an electromotive machine. An elongated loop (74) provides radial support to the winding. A base assembly (84) may include a base module (89) arranged to anchor the loop at a proximate end (76) of the elongated loop by way of a tubular coupling (86). The tubular coupling may further provide a mechanical connection relative to an axially-adjacent base module. A bracket assembly (100) may define an interior recess to receive a portion of the winding and to support the elongated loop at a distal end (78) of the elongated loop, such as by way of a support (80). A lateral-extending loop (106) may have a first end connected to the bracket assembly (100) and a second end connected to the base module (89) to transfer to the rotor core lateral loads, which may be experienced by the winding.

Abstract: Provided is a molded motor that hardly causes electric corrosion in bearings and produces less noise and vibration. Electrical continuity between a bracket 51 on an output side and a bracket 52 on a counter output side is secured by a conductive plate 60 having elasticity. Therefore, since the conductive plate 60 is unlikely to be cut off by an external force and does not change significantly with time, the electrical continuity between the bracket 51 on the output side and the bracket 52 on the counter output side is hardly interrupted. Accordingly, since a difference in potential between the bracket 51 on the output side and the bracket 52 on the counter output side hardly occurs, electric corrosion is hardly caused in a bearing 41 on the output side and a bearing 42 on the counter output side.

Abstract: A permanent magnet is rotated about an axis extending between opposing north and south poles. The magnetic field of the rotated permanent magnet interacts with magnetic fields of permanent magnets carried by a shuttle for repelling and attracting the fixed permanent magnets, and providing a linear reciprocating movement of the shuttle responsive to the favorable rotary motion of the rotated permanent magnet where the force of the linear motion is captured by an energy storage device.

Abstract: An actuator including a motor, case, resin mold, connector terminal, and two power supplying terminals. The motor includes two power receiving terminals. The resin mold is arranged in the case at a location close to one end. Each power supplying terminals includes a first extension, which is formed in a distal portion and includes a bent portion, and a second extension, which extends upward or downward from the bent portion. Each second extension includes a contact portion that elastically contacts the corresponding power receiving terminal in a direction in which an axis extends. The contact portions are located at positions that differ between the two power supplying terminals in a vertical direction. In the two power supplying terminals, the bent portions are located at different positions in the vertical direction. Further, the first extensions have different lengths from the resin mold.

Abstract: A superconducting coil whose shape can be modified after it is shaped and a superconducting rotating machine with the superconducting coil are provided. The superconducting coil has an feature that the superconducting coil 1 comprising a superconducting material wire 5 coated with an insulation material and a coil frame 4 on which the superconducting material wire 5 is wound, the coil frame 4 comprising a first member 2 being a thin plate in a circular ring shape and a second member 3 jointed with an inner periphery portion of the first member 2, the first member inner periphery portion extending from the jointed portion toward an outer periphery of the first member, wherein the superconducting material wire 5 is wound between the first member 2 and the second member 3, which constitute the coil frame 4.

Abstract: The invention relates to an arrangement for acoustic decoupling of a stator of an electric motor having two substantially cylindrical decoupling rings disposed on both sides of the stator and concentric to a motor shaft, each fixed to a front side of the stator on one side and each fixed to a housing enclosing the stator on the other side, and comprising recesses on the circumferential surfaces thereof. The decoupling rings hold the stator in a centered position at a distance from the housing. The recesses allow targeted acoustic decoupling. The invention is particularly applicable for electric motors in steering systems for motor vehicles.

Abstract: Disclosed is an electric motor including a yoke formed in a bottomed cylindrical shape; permanent magnets arranged on an inner peripheral surface of the yoke; an armature including a rotary shaft journalled on the yoke, an armature core formed with a plurality of teeth and fixed onto the rotary shaft, an armature coil wound around the teeth of the armature core, a commutator having a plurality of segments and being fixed onto the rotary shaft, and a connecting wire connecting two segments arranged to face each other back to back around the rotary shaft, the armature being surrounded by the permanent magnets and accommodated within the yoke; and a first brush, a second brush, and a third brush coming into sliding contact with the segments of the commutator of the armature.

Abstract: A rotor for an induction motor has a plurality of central laminations defining a central bore extending along an axis. End laminations are at each axial end of the central laminations. Metal is within gaps formed between lamination teeth. The end laminations have teeth extending radially outwardly from a central ring portion. A bore is formed in a face of the end laminations facing outwardly, and adjacent to where the teeth connect into the central ring portion. A motor and method are also described.

Abstract: A stator structure, including strip shaped stator cores and end insulators. The end insulators are injection molded with the strip shaped stator cores, as a whole. A wire duct is arranged on top of a yoke of each strip shaped stator core and at the bottom of each end insulator. Two ends inside the wire duct are projected with bosses. Coil windings wind around the bosses and pass through the wire duct. The stator structure is simple and easy to mass produce. It can make full use of the slot filling ratio of the strip shaped stator. The invention solves the puncture problem.

Abstract: An electromechanical device includes a central shaft; a rotor having a rotor magnet disposed along the periphery of the central shaft; a stator disposed on the periphery of the rotor; and a rotation mechanism connected to the rotor and used for transfer of a rotational driving force, wherein in the rotor, between the central shaft and the rotor magnet, a space which opens in at least one of an axial direction of the central shaft and houses at least part of the rotation mechanism is formed.

Abstract: A series-wound DC motor is disclosed comprising a stator having at least two poles and an armature, each pole comprising at least one field winding which is connected in series with an armature winding, and further comprising at least one permanent magnet arranged on each pole, whose magnetic field is superimposed on the main field produced by the at least one field winding.

Abstract: Embodiments of the invention provide an electric machine module including an electric machine with a stator assembly. The stator assembly includes a plurality of stator laminations coupled together and a plurality of conductors positioned through axial slots of the plurality of stator laminations. The electric machine module also includes a coolant channel at least partially defined within the axial slots and a housing. The housing at least partially circumscribes the electric machine and at least partially defines a machine cavity which is in fluid communication with the coolant channel.

Abstract: There are provided a base assembly for a motor and a fan motor including the same. The base assembly includes; a holder including a shaft system of the motor mounted therein and a stator for providing rotational driving force to a rotating member; an extension member mounted on the holder and extended to an upper portion of the stator; and an attractive magnet positioned above the extension member in an outer diameter direction to thereby prevent excessive floating of the rotating member.

Abstract: Embodiments of the invention provide an electric machine module including a housing. The housing can include an inner surface that defines a machine cavity. In some embodiments, an electric machine can be at least partially positioned within the machine cavity and can include a stator assembly. The stator assembly includes an outer diameter, a stator core, and a stator winding. The stator core can include at least two extended members that can radially extend from axial ends of the stator core. An annular member is coupled to the extended members to define a portion of a coolant jacket. The coolant jacket can be further defined between the annular member, the outer diameter of the stator assembly, and the extended members. The electric machine can be positioned within the housing so that the annular member is immediately adjacent to the inner surface.

Abstract: A head of an output shaft of a linear actuator is modified so as to absorb vibrations that may be transmitted between the output shaft and a moving object. A linear actuator has an output shaft with a leading end to which a head is fixed. The head has an O-ring that is fitted thereto, and a part of the O-ring outwardly projects from the head. The O-ring is made of rubber that is softer than the material of the head. The head is contained in a containing space in an attachment, and in this condition, the O-ring contacts an inner circumferential surface of the containing space by deforming.

Abstract: A three-phase DC motor includes a rotor 30 having poles 30a and a stator 28 having core units 32b arranged around the rotor 30. Three or more coils are wound around the core units 32b. An outer surface of the rotor 30 has alternating poles of N and S around the circumference of the rotor 30. The coils 35a, 35b, 35c, and 35d are placed only within a range defined by second virtual planes P2 specified respectively by rotating a first virtual plane P1 according to a predetermined angle in a rotor rotating direction and a direction opposite thereto. The first virtual plane P1 passes through the axial center of the rotor 30. The inner surface of the adjacent 3N (N=1, 2, 3, . . . ) number of core units 32b are delimited within a width of one pole on the outer surface of the rotor 30.

Abstract: Disclosed is a windshield wiper motor having a reduction mechanism unit and an electric motor. The electric motor of the windshield wiper motor includes a yoke formed in a bottomed cylindrical shape; permanent magnets arranged on an inner peripheral surface of the yoke; an armature including a rotary shaft journalled to the yoke, an armature core where a plurality of teeth are formed and fixed onto the rotary shaft, an armature coil wound around teeth of the armature core, a commutator having a plurality of segments and being fixed onto the rotary shaft, and a plurality of connecting wires connecting two segments arranged to face each other back to back around the rotary shaft, being surrounded by the permanent magnets and arranged within the yoke; and a first brush, a second brush, and a third brush coming into sliding contact with the segments of the commutator of the armature.

Abstract: A vibration energy generator includes a case, a coil, a permanent magnet, and a shield magnet. The case is elongated in one direction and is made from a nonmagnetic material. The coil surrounds around an outer surface of the case. The permanent magnet reciprocates inside the case along the one direction. The permanent magnet is magnetized with a polarity oriented in the one direction. The shield magnet is disposed in one end portion of the permanent magnet in the one direction. Each of a surface of the one end portion and a surface of the shield magnet facing the surface of the one end portion has the same magnetic polarity. The length of the shield magnet in the one direction is less than the length of the permanent magnet in the one direction.