In a stator, a stator winding is provided in a stator core and includes phase windings. A neutral-point bus bar is connected to a coil end portion of the stator winding in a radial direction thereof. The coil end portion includes first and second end portions that are joined together. The first tip end portion extends in a fixed direction in the circumferential direction. The second tip end portion extends in a direction opposite the fixed direction in the circumferential direction. The neutral-point bus bar includes a main body portion extending in the circumferential direction and connection portions extending in the radial direction from the main body portion. The connection portions are respectively connected to the phase windings in a state in which the connection portions do not protrude further towards a side opposite the stator core than the main body portion in the axial direction is.

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.

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.

The invention relates to a method for welding a plurality of strands (33) of one or more electrical conductors (22), comprising at least the following steps: (a) preparing the strands (33) to be welded such that at least the free ends (22a) of adjacent strands are axially offset by a non-zero distance d. (b) melting the free ends (22a) of the strands thus arranged in order to weld them without addition of material.

The present invention may provide a motor including a shaft, a rotor coupled to the shaft, a stator disposed to correspond to the rotor, and a busbar disposed above the stator, wherein the stator includes a stator core and coils, the busbar includes a busbar body and a plurality of terminals disposed on the busbar body, the terminals include terminal bodies, first protrusions extending from end portions of the terminal bodies and connected to end portions of the coils, and second protrusions branched off from the first protrusions and connected to power terminals, and the plurality of second protrusions are disposed at the same position in radial and vertical directions of the busbar and disposed at equal intervals in a circumferential direction of the busbar.

The present invention may provide a motor including a shaft, a rotor coupled to the shaft, a stator disposed to correspond to the rotor, and a busbar disposed above the stator, wherein the stator includes a stator core and coils, the busbar includes a busbar body and a plurality of terminals disposed on the busbar body, the terminals include terminal bodies, first protrusions extending from end portions of the terminal bodies and connected to end portions of the coils, and second protrusions branched off from the first protrusions and connected to power terminals, and the plurality of second protrusions are disposed at the same position in radial and vertical directions of the busbar and disposed at equal intervals in a circumferential direction of the busbar.

A rotary motor stator includes a plurality of stator teeth and a plurality of terminal securing blocks. The stator teeth are arranged in a ring to define a rotor accommodation space. Each stator tooth includes an inner side, a winding section and an outer side. The inner side is closer to the rotor accommodation space than the outer side, and the winding section is located between the inner side and the outer side for winding a coil. Each terminal securing block is fixed to the outer side of each stator tooth, and each terminal securing block includes a first wire slot configured to secure an end of the coil. An angle between a line passing through a center of the ring and a center of each terminal securing block and a lengthwise direction of the first wire slot is an acute angle.

A process for making a continuous bar winding (4) for an electric machine is described, comprising: a) a step of providing a template (10) having a template axis (X) and a circular array of slots (11) extended about said template axis (X), said circular array of slots having a number of slots equal to a number of slots of the stator or of the rotor of said electric machine, each slot (11) of said circular array having a first and a second open end face (11A, 11B) which are axially spaced from one another and a third open end face (11C), said third face (11C) being a longitudinal face extended between said first and second end faces (11A, 11B) b) a step of providing a conductive bar (20); c) a step of locking a locking portion (21) of said conductive bar; d) a step of inserting the conductive bar (20) into the slots (11) of said array and shaping the conductive bar (20) so that such conductive bar (20) repeatedly passes through the slots (11) of said array from the side of the first open end faces (11A) to the side of the second open end faces (11B) and vice versa, so that said bar (20) has a plurality of bar portions (20B, 20E, 20H) received in the slots (11) of said array and a plurality of connecting portions (20C, 20D; 20F, 20G) projecting beyond said first and second open end faces (11A, 11B), each of said connecting portions joining a pair of said bar portions (20B, 20E, 20H) received in the slots (11) of said array; in which said step d) comprises: d1) an operation of inserting a first bar portion (20B) of said plurality of bar portions into a respective slot (11) of said circular array of slots (11) through said third face (11C) of such slot (11); d2) an operation of shaping a first connecting portion (20C, 20D) of said plurality of connecting portions (20C, 20D; 20F, 20G); d3) an operation of inserting a second bar portion (20E) of said plurality of bar portions (20B, 20E, 20H) into a further slot (11) of said array, different from the slot (11) into which said first bar portion (20B) has been inserted, through said third face (11C) of the further slot (11); in which said first connecting portion (20C, 20D) joins said first and second bar portions (20B, 20E) projecting beyond the second end faces (11B) of the slots (11) in which said fi

A coil support for an electric motor includes a coil holding arrangement having coil holding portions configured to hold a corresponding number of coils. A connectics receiving arrangement is configured as a housing for interconnected cables and coil wires. The connectics receiving arrangement comprises a cable receiving portion having recesses configured to receive the cables and a wire receiving portion having through-holes extending from a top surface to a bottom surface of the wire receiving portion. The top surface of the wire receiving portion is arranged adjacent the coil holding arrangement and the bottom surface of the wire receiving portion is located in the connectics receiving arrangement so as to provide for electrical interconnection of the coils with corresponding ones of the cables. A separation wall is arranged between the bottom surface of the wire receiving portion and the coil holding arrangement.

A coil support for an electric motor includes a coil holding arrangement having coil holding portions configured to hold a corresponding number of coils. A connectics receiving arrangement is configured as a housing for interconnected cables and coil wires. The connectics receiving arrangement comprises a cable receiving portion having recesses configured to receive the cables and a wire receiving portion having through-holes extending from a top surface to a bottom surface of the wire receiving portion. The top surface of the wire receiving portion is arranged adjacent the coil holding arrangement and the bottom surface of the wire receiving portion is located in the connectics receiving arrangement so as to provide for electrical interconnection of the coils with corresponding ones of the cables. A separation wall is arranged between the bottom surface of the wire receiving portion and the coil holding arrangement.