Abstract: A phase bus bar unit includes a bus bar holder that is an insulator and supports of bus bars for phases of a motor rotating about a central axis, and a bus bar cover which is an insulator, covers at least one side of each of the bus bars in an axial direction, and is fixed to the bus bar holder. Each of the bus bars includes a base, extensions each extending outward in a radial direction from the base, and a terminal installed on an outer end of each of the extensions in the radial direction. The bus bar cover includes protrusions each protruding to another side in the axial direction, and the protrusions are in contact with each of the bus bars while at least one of the protrusions is in contact with the base at or adjacent to the extension.

Abstract: A precision triggering mechanism for engaging a portion of a device and a method of using the same are provided. The mechanism comprises an electric linear motor, a force limiter, a force sensor, an engagement slide, and a controller. The electric linear motor includes a drive rod, a driver that applies a force to the drive rod to move the drive rod linearly, and a sensor for detecting a linear position of the drive rod. The force limiter is connected to the drive rod and is configured to absorb an amount of axial force asserted by the drive rod above a maximum amount. The force sensor is connected to the force limiter and is configured to detect an amount of force applied by the force limiter on the force sensor. The engagement slide includes an end extending from the force sensor for engaging the portion of the device.

Abstract: The present invention may provide a motor comprising: a rotation shaft; a rotor including a coupling hole in which the rotation shaft is disposed; a stator disposed outside the rotor; and a housing for receiving the rotor and the stator, wherein the housing comprises: a body; a bracket disposed on one side of the body and including a hole and a bearing pocket part disposed along the circumferential direction with respect to the center of the hole; and a bearing disposed in the bearing pocket part, wherein the inner surface of the bearing pocket part includes a first surface, a second surface, and a third surface, and wherein the first surface comes in contact with the outer circumferential surface of the bearing, the second surface comes in contact with the upper surface of the bearing, and the third surface is disposed between the first surface and the second surface in the height direction of the bracket while being spaced apart from the outer circumferential surface of the bearing.

Abstract: A linear electric machine comprises a primary part (101) and a secondary part (102) linearly movable with respect to each other. The primary part comprises primary sections (103, 104) each having an airgap surface. The secondary part comprises secondary sections (105, 106) each having an airgap surface facing towards the air-gap surface of the respective primary section. Each primary section comprises force-generating windings (U1, V1, W1, U2, V2, W2) for generating a magnetic thrust force and a transversal magnetic force pulling the primary section towards the respective secondary section. The resultant of the transversal magnetic forces is controllable to levitate the primary part. The primary part further comprises one or more tilt-control windings (T1, T2) for controlling tilting of the primary part with respect to the secondary part.

Abstract: A motor includes a cover including a first cup body and a second cup body, each including a bottomed tubular shape. The first cup body and the second cup body are disposed with openings of the peripheral wall portions facing each other. The second cup body includes a bottom wall portion provided with stud bolts projecting from the bottom wall portion to one axial direction and spaced apart from each other in a circumferential direction. An end surface of a heat sink, facing the one axial direction, is in contact with a portion positioned between the stud bolts adjacent to each other in the circumferential direction in a surface of the bottom wall portion of the second cup body in the other axial direction.

Abstract: An interconnection device for a stator winding having connection conductors constructed as annular disks, coaxially stacked, and electrically insulated with respect to one another. Each connection conductor has fastening openings distributed in circumferential direction for fixing the interconnection device to a stator. The connection conductors are stacked such that the fastening openings are positioned to form a fastening passage The connection conductors are axially spaced apart from one another and are overmolded with a plastic to form a metal/plastic composite part. At least two kinds of fastening openings are provided, which form larger fastening openings and smaller fastening openings. A larger fastening opening and a smaller fastening opening are formed at a fastening passage, and an annular space, which extends from a boundary of the larger fastening opening to a boundary of the smaller fastening opening, is filled by the plastic.

Abstract: A wind portion of an insulator includes a side surface at the same side as, in a circumferential direction, a second guide surface which is orthogonal to a holding surface capable of holding a coil and which guides a winding in an inner-diameter direction, and an end surface orthogonal to the side surface. A first corner formed at a boundary between the holding surface and the side surface as viewed in the axial direction of a motor stator is located at a guiding-direction side by a first guide surface relative to a second corner formed at a boundary between the first guide surface and the second guide surface. The winding is extended from the second corner to the first corner.

Abstract: A motor includes a heat sink including a first portion and a second portion located on a circumference identical to the first portion and extending along a circumferential direction. An axial thickness of the first portion is larger than an axial thickness of the second portion. A lower surface of the second portion is located axially above a lower surface of the first portion. A busbar is located axially below the second portion.

Abstract: A motor connector comprises: a wiring unit, which includes an electric wire having a conductive wire having a conductive wire exposed through an insulating sheath, and a terminal coupled to the conductive wire and having a terminal formed at an end thereof; a base including a first molding part, in which the terminal is arranged, and a second molding part extending from the first molding part to the outside and having a space for accommodating the conductive wire and a part of the insulating sheath adjacent to the conductive wire; a fixing member coupled to the second molding part, and covering and fixing the sheath; and a grommet arranged in the space and coupled to an outer surface of the insulating sheath so as to press the electric wire.

Abstract: An electrical machine (10), in particular a machine which can be operated in electric generator mode and/or in electric motor mode, comprising a rotor (14) which has a shaft (13), wherein a part of a turbomachine (68) is formed on the shaft (13) and the part is a fan (60), wherein the fan (60) has a circumference (83) with a circumferential direction (85), and a housing (63) of an electrical unit (45) is adjacent to the fan (60) and serves as a housing of the turbomachine (68), and there is a gap (65) between the fan (60) and the housing (63) of the electrical unit (45), characterized in that the gap (65) has a radial width (B65R) which has a different magnitude depending on a circumferential position (U602) on the fan (60) which is arranged on the shaft (13).

Abstract: A motor connector comprises: a wiring unit including an electric wire having a conductive wire exposed from an insulating sheath, and a terminal coupled to the conductive wire and having a terminal part formed on the end portion thereof; a base including a first molding part having the terminal part disposed therein, and a second molding part extending outwards from the first molding part and having a receiving space for receiving the conductive wire and a part of the insulating sheath adjacent to the conductive wire; a fixing member coupled to the second molding part and covering the sheath so as to fix the same; and a molding member filling the receiving space so as to seal the gap between the first molding part and the second molding part.

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: 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: An inner-rotor motor including a housing, a stator and a rotor avoids damage to the coil unit which often occurs during assembly of the conventional inner-rotor motor. The housing has an inner periphery provided with a plurality of protrusions. The iron core has an outer periphery provided with a plurality of notches. The insulating sleeve includes a plurality of positioning members. In radial directions perpendicular to the shaft, each of the plurality of notches is spaced from a center of a shaft at a minimal distance, and each of the plurality of positioning members is spaced from the center of the shaft at a maximal distance. The maximal distance is smaller than the minimal distance.

Abstract: A cooling system includes a rotary electric machine, a pump that pumps coolant, a first coolant flow path that guides coolant to the rotary electric machine, a second coolant flow path branching off from the first coolant flow path, a pressure regulation valve provided in the second coolant flow path, a first orifice provided at downstream than the pressure regulation valve in the second coolant flow path in coolant flow direction, a third coolant flow path branching off from between the pressure regulation valve and the first orifice in the second coolant flow path and joining to a downstream than the branching position of the second coolant flow path in the first coolant flow path in coolant flow direction, and a switching valve provided in the third coolant flow path and that allows coolant flow to the first coolant flow path when experiencing a pressure of a threshold or more.

Abstract: A method and apparatus for cooling a rotor assembly for an inside-out electric machine includes an annular rotor core defining a set of rotor posts, the core rotatable about an axis of rotation, a set of windings wound around the respective set of rotor posts, and a wedge disposed between adjacent sets of rotor windings.

Abstract: Described herein are fractional slot electric motors with compact crowns. A motor comprises multiple coil elements protruding through a stator core and forming electrical connections with each other and/or with a lead assembly. The lead assembly comprises phase busbars connected to selected coil elements and comprising terminals for connecting to an external power supply. The lead assembly also comprises neutral busbars, with no external connections and internally connected to other coil elements. Each coil element has a rectangular cross-sectional profile to maximize the slot-fill-ratio of the motor, Each coil element is electrically coupled to two other components. For example, each looped coil element is coupled to two other coil elements at a stator side, opposite the lead assembly. Each extended coil element is coupled to another coil element at that same side and coupled to another coil element or a busbar at the lead assembly side.

Abstract: A motor includes a rotary shaft having at least one spray hole for spraying a cooling fluid, a rotor installed on the rotary shaft, and a stator surrounding an outer circumference of the rotor, wherein the rotor includes a plurality of rotor blocks arranged on an outer circumference of the rotary shaft. Each of the rotor blocks may include a magnet installed at a rotor core and a cooling guide may be disposed between a pair of the plurality of rotor blocks and form a spray flow path for guiding a cooling fluid that has passed through the spray hole to be sprayed in a direction toward an inner circumference of the stator.