Abstract: An electric motor including a rotor configured to rotate about a rotational axis and a stator extending along the rotational axis. The stator may include a stator yoke, a first tooth, and a second tooth, each provided with a shaft extending away from the stator yolk towards the rotational axis to a base. Adjacent sides of the of the first tooth and the base of the second tooth may form a groove slot. A reinforcement element may be inserted into the groove slot.

Abstract: A Static Electrostatic Generator (SEG) is disclosed which produces static charges at high voltage and low current. The SEG is capable of generating positive or negative charges on a metal sphere by reversing the polarity of a DC source. The conversion efficiency of the system is about 47% and its design is simple, lightweight, and easy to manufacture. The SEG is a static device and no mechanical movement is required to produce charges. Also, the design is easily scalable.

Abstract: The disclosure relates to the field of cycle technologies, and particularly to a wheel and a cycle. The wheel comprises a rim, a tire covering an outer periphery face of the rim, and a friction power device sandwiched between the rim and the tire; wherein the friction power device can produce a frictional current when pressed by the rim and/or the tire.

Abstract: An encoder includes a carrier disc, a coded disc, a rotating shaft, a bearing, a bracket, a housing and a sensing assembly is disclosed. The coded disc is disposed on the carrier disc. The rotating shaft includes a first attaching portion and a second attaching portion, and the first attaching portion is partially penetrated through the carrier disc. The bearing includes a bearing inner surface and a bearing outer surface, and the bearing inner surface is connected with the second attaching portion. The bracket includes a bearing attaching portion and a bracket curved feature portion, and the bearing attaching portion is connected with the bearing outer surface. The housing includes a housing curved feature portion, which is connected with the bracket curved feature portion.

Abstract: According to one embodiment, a tactile actuator can comprise: a housing having an accommodation space therein; a cap covering at least a portion of the accommodation space; a vibration unit disposed inside the accommodation space; an elastic member for connecting the housing and the vibration unit such that the vibration unit can vibrate with respect to the housing; a coil for forming a magnetic field to drive the vibration unit; and a control unit for determining any one driving mode on the basis of collected driving information from among a plurality of preset driving modes and determining, according to the driving mode, the characteristic of a current to be applied to the coil.

Abstract: A generator system having a dynamo that contains an armature, a stator and a housing. The armature rotates about a first axis of rotation. The stator is concentrically positioned around the armature. Both the armature and the stator are free to rotate in opposite directions about the first axis of rotation. The housing of the dynamo is connected to a motor that can rotate the dynamo around a second axis of rotation. There is an angle of inclination between the first axis of rotation and the second axis of rotation. This angle of inclination is selectively altered during operation. By changing the angle of inclination between the two axes of rotation, a precession can be created that adds rotational energy to both the armature and the stator. This increases the output of the dynamo and creates a highly efficient electrical generator.

Abstract: An electronic system housing for an E-axle drive of a motor vehicle is disclosed. The electronic system housing comprises a power electronic system received within the electronic system housing for processing voltage in high voltage systems. At least one low voltage component is further received within the electronic system housing.

Abstract: An assembly for use in an axial flux motor or generator includes a rotor plate and a magnet, the magnet having a surface that is orthogonal to a magnetization direction of the magnet. The rotor plate is adapted to engage a rotor shaft that rotates about an axis of rotation, and the magnet is attached to the rotor plate. The rotor plate and magnet are configured and arranged such that, if the rotor plate and the magnet are separated from all other magnetic field generating components, then a distance between a first plane that intercepts a first point on the surface and to which the axis of rotation is normal and a second plane that intercepts a second point on the surface and to which the axis of rotation is normal is substantially greater than zero.

Abstract: A method for manufacturing a charge pump-based artificial lightning generator comprises the steps of: forming a second electrode on a prepared substrate; forming a negatively charged body having a sponge structure under the second electrode; removing spherical polymer particles from the negatively charged body using a toluene solution; allowing metal particles to penetrate into the negatively charged body; forming a positively charged body in a location which is at a predetermined distance below the negatively charged body in order to generate charges; nano-structuring the surface of the positively charged body; coating the nano-structured surface of the positively charged body with second metal particles; forming a ground layer for charge separation while maintaining a constant distance in the downward direction from one side of the positively charged body; and forming a first electrode for charge accumulation in a location which is at a predetermined distance below the positively charged body.

Abstract: An electromagnetic energy converter includes: a conducting coil; a main magnet in an inner space V formed by the conducting coil, retaining structure allowing the main magnet to rotate about an axis YY? between two stable equilibrium positions; a first actuator magnet and a second actuator magnet disposed facing the first end and the second end respectively, the first and second actuator magnets being arranged to slide simultaneously in the same direction and parallel to the main axis XX? once a force is exerted on either one of the first or second magnets.

Abstract: An electrostatic machine includes a drive electrode and a stator electrode. The drive electrode and the stator electrode are separated by a gap and form a capacitor. The drive electrode is configured to move with respect to the stator electrode. The electrostatic machine further includes a housing configured to enclose the drive electrode and the stator electrode. The stator electrode is fixed to the housing. The electrostatic machine also includes a dielectric fluid that fills a void defined by the housing, the drive electrode, and the stator electrode. The dielectric fluid includes an ester.

Abstract: An aspect of a motor according to the invention includes a stator, a rotor, a detector configured to detect a rotating position of the rotor, a holder disposed between the stator and the detector in the predetermined direction, and a bearing held by the holder and configured to rotatably support the shaft. A recess opened toward the stator and housing the bearing and an injection hole including a first opening opened toward the detector, the injection hole communicating with the recess, are provided in the holder. A groove into which an adhesive is injected is provided on the inner surface of the recess. The outer circumferential surface of the bearing is fixed to the inner surface via the adhesive. The injection hole includes a second opening opened in the inner circumferential surface of the recess and connected to the groove. The injection hole is closed by a screw.

Abstract: An electrical machine has passages in the coil ends of a stator. The passages have an inlet port and an exit port disposed at different locations. The passages remove heat from the electrical machine during operation. The passages formed in the coil ends can receive a cooling fluid discharged from cooling passages formed in a stator core. Tooling can be used to form the passages. In some embodiments passages are also formed in the rotor. Other embodiments include apparatuses, systems, devices, hardware, methods, and combinations for electrical machines and the cooling of electrical machine rotors and/or stators.

Abstract: The invention relates to a method for connecting free flat wire ends (4, 5) with a substantially rectangular cross section with four sides (41, 42, 43, 44) of a stator of an electrical machine, comprising the steps at: stripping a first flat wire end (4), sheathed with an insulation material, such that partial stripping is carried out at least on three sides (41, 42, 43) and such that the insulation material remains complete on a fourth side (44) of the first flat wire end (4), and electrically connecting the stripped first flat wire end (4) on the completely stripped side (43) to a second flat wire end (5).

Abstract: A hand-held electric power tool includes a housing, a connecting seat, and an elastic member. The connecting seat is configured to couple a battery pack to the hand-held electric power tool along a first straight line whereby the battery pack and the hand-held electric power tool are electrically connected via the connecting seat. The connecting seat is operative to move along the first straight line and along a second straight line perpendicular to the first straight line. The elastic member is configured to movably connect the connecting seat to the housing, and is configured to generate a force at least along a third straight line inclined from the first straight line enabling the connecting seat and the battery pack to contact each other.

Abstract: The hollow rotor shaft for a rotating electrical machine includes two parts. A first part includes a first hollow cylindrical element and a second part includes a second hollow cylindrical element, whereby sections of a first end of the first and second elements are in contact and secured by securing means.

Abstract: A motor comprising a frame and one or a plurality of magnets disposed inside the frame, wherein a gap extending in a circumferential direction is provided between an inner peripheral surface of the frame and an outer peripheral surface of the magnet, and the magnet and the frame arranged at both sides of the gap are coupled together in a rotational shaft direction by means of an adhesive.

Abstract: A motor includes a motor main body including a rotor rotatable about on a central axis extending in an up-down direction, a controller to control the rotation of the rotor, the controller being disposed on an upper side of the motor main body, a cover surrounding the controller from an outward diameter direction, the motor main body including a sealing surface with a groove portion opened upward, the cover including a lower end portion inserted into the groove portion, an outer flange portion located above the lower end portion and extending in an outward diameter direction, and an inner flange portion located above the lower end portion and extending in an inward diameter direction, the outer flange portion faces the sealing surface through a first space, the inner flange portion facing the sealing surface through a second space, and insides of the groove, the first space, and the second space are filled with an adhesive.

Abstract: A motor cooling fan unit comprises a tubular cover capable of surrounding a motor and a fan provided to blow air toward the interior of the cover. The motor cooling fan unit is configured to cause air blown from the fan to pass through a flow path between the motor and the cover. The cover comprises an exhaust part provided at a downstream area of the flow path. The exhaust part comprises: an open part for making the flow path communicate with the outside; and an exhaust adjusting member provided for the open part and movable between a shield position at which the exhaust adjusting member covers the open part and an open position at which the exhaust adjusting member opens the open part. The amount of movement of the exhaust adjusting member is adjusted to allow adjustment of the amount of the air in the flow path to be exhausted through the open part and a direction of the exhaust, or adjustment of the amount of the air to be exhausted or a direction of the exhaust.

Abstract: A motor includes a rotor, a stator, a housing, a heat sink, a substrate, a connector, and a cover. The connector includes a connector shell with a shell projection or shell recess. The heat sink includes a heat sink body and a heat sink protrusion. The heat sink protrusion includes a heat sink recess or heat sink projection. The shell projection or shell recess, and the heat sink recess or heat sink projection are fitted through a gap.