Abstract: An annular stator core in which, out of slots arrayed in a circumferential direction and extending in a radial direction, q slots are formed per pole and per phase; and stator windings, for respective phases, attached to the stator core. For each stator winding, q*n unit coils obtained by winding wire conductors at regular intervals into concentric winding forms are used to obtain n coils in each of which the q unit coils wound in a same direction are connected so as to be shifted from each other in the circumferential direction, and the stator winding is composed of two coil groups each obtained by joining the n/2 coils together. The two coil groups are connected in parallel to each other between power feed portions and neutral points, and two coils that are connected to the power feed portions are disposed so as to share the slot.

Abstract: An electric sander motor includes a motor main body (100), a power axial shaft (210) and a sleeve (220). The motor main body (100) includes a rotor (110) and a stator (120) surrounding the rotor (110). The power axial shaft (210) includes an axial hole (211) extending along a central axis of the power axial shaft (210). The sleeve (220) includes one open end and another closed end extended outward to form an eccentric axial shaft (221) penetrating through the axial hole (211). A central axis of the eccentric axial shaft (211) is parallel with a central axis of the sleeve (220) and spaced apart therefrom. The power axial shaft (210) penetrates through the rotor (110), and the sleeve (220) is outside the motor main body (100). The assembly is facilitated by assembling the power axial shaft (210) and the sleeve (220) onto the motor main body (100) sequentially.

Abstract: This disclosure details cooling systems for cooling electric components, such as electric machines, within electrified vehicles. Exemplary cooling systems may include a spray bar positioned relative to a rear face of a stator of the electric machine. In some embodiments, the spray bar may be positioned axially between the rear face of the stator and a torque converter housing. One or more nozzles of the spray bar are configured to direct a coolant between adjacent back irons of the stator, onto end windings of the stator, or both. Actively cooling the stator allows the electric machine to operate at higher torques and speeds, thereby increasing performance.

Abstract: An electric motor, in particular a separately excited synchronous motor, has a rotor shaft with at least one slip ring and at least one electrically conductive contact element, in particular a carbon brush, which bears against the slip ring and is accommodated in a channel-like guide formed in a housing and extending radially with respect to the rotor shaft and which carbon brush is radially tensioned against the slip ring by means of a spring element, wherein a roller is provided which is tensioned laterally against the contact element via a further spring element and via which the contact element is tensioned against a wall of the guide.

Abstract: A motorized hand tool such as a cordless ratchet wrench that has a motor, and a housing that encloses or houses the motor. The motor includes one or more exhaust ports that expel exhaust air out of the motor. The housing includes one or more exhaust ports and inwardly projecting protrusions or deflectors that extend around the exhaust ports. The inwardly projecting protrusions/deflectors extend in a direction towards the motor exhaust ports, and/or are at least partially disposed in the motor exhaust ports to direct exhaust air out of the housing and prevent exhaust air from recirculating near the motor and electronic components of the tool.

Abstract: Electric power can be generated by using an existing bicycle without impairing the durability of the tire of the bicycle. The bicycle generator device (50) comprises a housing (52) configured to be attached to a frame (18) of a bicycle (10), a generator (54) attached to the housing (52), an annular rotational input member (81) for rotationally driving the generator (54), the rotational input member being rotatably mounted on the housing and positioned around a crank axis line which is a rotational center line of a crankshaft (24) and a crank arm (26) for a pedal of the bicycle, and a connecting member (90, 130) connecting the rotational input member (81) to the crankshaft (24) or the crank arm (26) in a torque transmitting relationship.

Abstract: The present disclosure relates to a motor for a seat sliding device of a vehicle, and includes a coil module in which a plurality of first coils and a plurality of second coils are seamlessly disposed in the circumferential direction to have a cylindrical shape. Therefore, the conventional stator core having a slot and a tooth for installing the coil is not used, thereby implementing miniaturization and light-weight of a motor. and the slot and the tooth do not exist, thereby reducing a cogging torque and reducing the vibration and noise of the motor.

Abstract: A connection structure of an electric component, a motor and a connection method of an electric component are provided. The connection structure of the electric component includes: an electric component main body having a connection terminal; a connector for wiring which is connected with the connection terminal; a base member; and a cover member. The base member is provided with an accommodation recessed part which accommodates inside a connected portion between the connection terminal and the connector. The accommodation recessed part has an opening part opened to an upper side. The cover member is attached to the base member so as to cover the opening part. An inside of the accommodation recessed part is filled with a sealing material which seals the connected portion between the connection terminal and the connector, and the sealing material fixes the connected portion, the base member and the cover member to each other.

Abstract: An electric motor including a rotor rotatably mounted about a rotational axis extending in the axial direction, and a stator including stator teeth widened in a T shape at the tooth-base side to form pole tabs and extending in the circumferential direction. The pole tabs may form a bearing shoulder. A respective stator slot for receiving coils of a stator winding is formed between adjacent stator teeth and a slot opening formed between mutually facing pole tabs. A reinforcing element may be inserted into a slot opening. The reinforcing element are held on mutually facing pole tabs of adjacent stator teeth by the bearing shoulders. The reinforcing element includes a contour that engages a bearing region to reduce a contact area with the bearing shoulders.

Abstract: A magnetically-coupled torque assist apparatus includes a movable (rotor) magnet configured to rotate about a rotor magnet axis extending through the rotor magnet, and a stationary (stator) magnet. The rotor magnet and the stator magnet have a gap therebetween. There is an equilibrium state position (ESP) of the rotor magnet where forces acting on the rotor magnet are balanced such that the rotor magnet is stationary about the rotor magnet axis. And when the rotor magnet is rotated from the equilibrium state position (ESP) to an elastically stressed state position (SSP), magnetic fields of the rotor magnet and the stator magnet generate a resultant magnetic force on the movable magnet that biases the movable magnet towards the equilibrium state position. In some embodiments, the stator and rotor magnets are configured to create a Halbach-effect magnetic field bloom, which contributes to the magnetic forces.

Abstract: Drive generator having a helical magnetic array. Additionally, a coupling portion is coupled to the drive generator and configured to be coupled to a vehicle. A drive member is configured to be at least partially located within the at least one drive generator, whereby the drive member is magnetically coupled to the at least one drive body. Furthermore, a prime mover is coupled to the drive member and configured to rotate the drive member, thereby imparting motion, when a portion of the drive member is located within the at least one drive generator, of the at least one drive generator relative to the drive member.

Abstract: A trimmer includes a handle assembly, a power mechanism installed at one end of the handle assembly, and a blade assembly connected to the power mechanism. The power mechanism has a housing assembly, a motor received in the housing assembly, and a power transmission assembly mounted on the housing assembly. The motor is an external rotor motor with a diameter greater than or equal to 50 mm. The power transmission assembly has pinion coaxially sleeved on an output shaft of the motor and a big gear meshing with the small gear, and a transmission ratio of the small gear to the big gear is less than 6. By such arrangement, the trimmer can obtain the best output effect under a condition that the output power of the motor is unchanged.

Abstract: Apparatuses, systems, and methods of use for a generator is disclosed. In one embodiment, the generator has a stator and a rotor and a first plurality of magnets coupled to the rotor and a second plurality of magnets coupled to the stator. An external magnetic housing may be coupled to an input shaft of the generator or surround the generator itself. A first layer of magnets produce a rotating magnetic field and a second layer of magnets create a static magnetic field, whether such magnets are in the generator itself or within an external magnetic housing. The disclosed generator increases the mechanical power inputted into the generator, which then produces an increased output of the generator.

Abstract: A stator module for two-dimensionally driving a rotor having first and second magnet units includes a stator assembly with first and second stator segments configured for interacting with drive magnets of the first and second magnet units. The individual stator segments can each be energized independently from the remaining stator segments. The stator assembly includes first, second, third and fourth stator sectors. The first stator segments of the individual stator sectors each extend in a second direction over all second stator segments of the relevant stator sector, arranged side by side, and the second stator segments of the individual stator sectors each extend in a first direction over all first stator segments of the relevant stator sector arranged side by side. Extensions of the stator sectors in the first and second directions are respectively smaller than extensions of a magnet arrangement including the first and second magnet units.

Abstract: A motor is provided, and includes: a stator having a plurality of electromagnets and a plurality of rolling elements arranged around the electromagnets; a rotor having a plurality of rotor traction components arranged to engage the plurality of rolling elements; and a control circuit; wherein the plurality of rolling elements are arranged relative to the plurality of rotor traction components to form a gap between the plurality of rolling elements and the plurality of rotor traction components; wherein the control circuit is configured to activate the plurality of electromagnets to cause the rotor to pivot about a pivot point defined in a spherical bearing and change the gap such that the rotor compresses against the stator and the plurality of rolling elements and the plurality of rotor traction components translate the compression into tangential thrust and rotation of the rotor.

Abstract: Apparatus and associated methods relate to an electromagnetic steered orientation device. In an illustrative example, an exemplary electromagnetic payload orientation device (EPOD) includes a rotor, a stator, and a payload mounted on the rotor. The rotor, for example, may be coupled to a magnetic source. For example, the stator may include electromagnetic coils operable by a controller circuit to induce relative rotation between the rotor and the stator. In some examples, the rotor is a sphere provided with one or more guide tracks on an outer surface, and the stator is a concentric shell surrounding the sphere provided with at least one follower corresponding to the guide tracks such that a relative rotation between the rotor and stator is constrained by the guide track to follow a predetermined motion profile. Various embodiments may advantageously provide a substantially smooth and low voltage mechanism to orient the payload.

Abstract: A motor includes a rotor including a shaft extending in an axial direction, a stator surrounding a radially outer portion of the rotor, a support into which the conductor is inserted, the support being made of an insulating material, and a holder including through holes to hold the support, in which the support includes the first and second protuberances at least a portion of which is located in the through hole, the first and second protuberances being provided at intervals, and a base portion connecting the first and second, protuberances, and in which at least a portion of each of facing regions of a side surface of the first protuberance is close to the holder, and the second protuberance has a clearance with respect to the holder.

Abstract: A permanent magnet generator consisting of a stator including a pendulating master permanent magnet and a push button. The master permanent magnet is restricted in its oscillation. The master permanent magnet is oriented with a predetermined polarity towards a rotor. The rotor including a plurality of oscillating slave permanent magnets and an axel. The slave permanent magnets are equivalently spaced around an outer edge of said rotor. The slave permanent magnets are restricted in their oscillations and the slave permanent magnets are oriented with the predetermined polarity the outer edge of the rotor. When the push button is engaged, the master permanent magnet and a first of the plurality of the slave permanent magnet's magnetic fields come into contact and repel each other, driving a circular rotation of the rotor. When the circular rotation of the rotor aligns the master permanent magnet and the plurality of the slave permanent magnet's magnetic fields in sequence.

Abstract: A flywheel assembly for a renewable energy generation system includes a flywheel housing defining a cavity therein, a flywheel rotatably disposed within the cavity of the flywheel housing, where the flywheel is simultaneously formed from the same component as the flywheel housing, a magnetic levitation disk defining opposed upper and lower surfaces, the upper surface supporting the flywheel and the lower surface including a first plurality of magnets disposed thereon, and a base plate having a second plurality of magnets disposed on a surface thereof that is facing the first plurality of magnets, the second plurality of magnets having a polarity that is opposite of a polarity of the first plurality of magnets such that the magnetic force of the first and second plurality of magnets urges the magnetic levitation disk away from the base plate.

Abstract: A power tool comprising: a conductive tube; a rear unit located at a rear end of the tube; a front unit located at a front end of the tube; a battery interface comprising a plurality of terminals, wherein the battery interface is located in the rear unit; a motor located in the front unit; at least one power line for supplying power from the rear unit to the front unit, wherein at least a portion of the power line is located within the tube; and an electromagnetic interference (EMI) suppressor for suppressing EMI from the at least one power line, the EMI suppressor comprising an electrical component electrically connecting the tube to a first terminal of the plurality of terminals.