摘要:
There is provided a radiator reservoir tank including: a tank body that is connected to a radiator and that includes an inlet section and an accumulation section for cooling water; a first rib that is disposed inside the tank body, and that extends out from a side wall at one side of facing side walls of the tank body toward another side, and that partitions between the inlet section and the accumulation section, and that is provided with a gap to the side wall at the other side; and a second rib that is provided further toward the inlet section side or the accumulation section side than the first rib, that extends out from the side wall at the other side toward the one side, and that is provided with a gap to the side wall at the one side.
摘要:
A rotor for a rotary electric machine includes a rotor core which is formed by crimping laminated steel plates so as to be opposed to a stator, and has pairs of magnet housing holes disposed in a V shape, and pairs of magnets housed in the magnet housing holes. The rotor core has a crimped portion formed in a q axis core portion positioned between the two magnet poles, which are adjacent to each other in a circumferential direction, a first flux barrier formed between the q axis core portion and the magnet, and a pair of second flux barriers which enlarges from an end positioned at a center side of the magnet pole of the magnet housing holes toward a central axis of the rotor core. The crimped portion is formed so that distances between the crimped portion and both the first and second flux barriers are equal.
摘要:
A rotor includes a hollow cylindrical rotor core that has a center hole, in which a rotating shaft is to be press-fitted, and a plurality of magnet-receiving holes in which a plurality of permanent magnets are respectively received. In a radially inner surface of the rotor core defining the center hole, there are formed a plurality of non-contacting recesses and a plurality of contacting protrusions alternately in the circumferential direction of the rotor core. Each of the non-contacting recesses is recessed radially outward so as not to be in contact with the rotating shaft. Each of the contacting protrusions protrudes radially inward so as to be in pressed contact with the rotating shaft. The rotor core further has a plurality of through-holes each of which penetrates the rotor core in the axial direction of the rotor core and is located radially outside a corresponding one of the contacting protrusions.
摘要:
In a stator, a stator winding is wound at a stator core. The stator winding has a section whose shape is rectangular and includes a plurality of conductors electrically connected to each other. Each of the conductors has in-slot portions being accommodated as being stacked in corresponding one of the slots when the winding is wound at the stator core. A fixing member fixes the in-slot portions to each of the slots. The fixing member is composed of an adhesive material charged into each of the slots such that a through-hole is left through each of the slots in the axial direction. Refrigerant is allowed to pass through the through-hole.
摘要:
A rotor includes a rotor core having a plurality of pairs of magnet-receiving holes and a plurality of magnets respectively received in the magnet-receiving holes. Each pair of the magnet-receiving holes is arranged in a substantially V-shape opening radially outward and a center bridge formed between the two magnet-receiving holes of the pair. For each of the magnet-receiving holes, a protrusion is formed, at a position closer to a radially outer end than a radially inner end of the center bridge, so as to protrude from the center bridge inward of the magnet-receiving hole. Moreover, a magnetic flux barrier is formed at a radially innermost corner portion of the magnet-receiving hole and defined by a curved surface that includes three or more single-curvature surfaces having different curvatures. Among the single-curvature surfaces, the single-curvature surface which has the minimum curvature is positioned closest to the longitudinal axis of the rotor core.
摘要:
A rotary electric machine includes a stator and a rotor located in a rotatable manner relative to the stator via a gap. The stator includes a multi-phase stator winding that is held in a plurality of slots formed in the stator. The rotor includes at least one magnet section embedded therein so as to face the slots. The magnet section includes a plurality of axially laminated magnets with a skew angle which is an angle of a positional difference between the magnets. This skew angle θs is set so as to satisfy θs=kα/2 where α is a slot pitch which is an angle between the slots, and k is a coefficient set based on: an arc ratio θa being an angle covering an area in which magnetic flux radially flows from the magnetic section; and a slot factor S being a ratio of the slots relative to the magnet section.
摘要:
A manufacturing method of a rotary electric machine provided with an armature winding including: a collection process that bundles a plurality of wires each including a conductor through which current flows and a fused layer covering a surface of the conductor, and makes fused layers contact with each other to be fused therebetween; a coating process that covers the plurality of wires bundled by the collection process with a tape-shaped insulation film to form a conductive wire; and a winding process that multiply winds the conductive wire formed by the coating process to form the armature winding.
摘要:
A rotating electric machine includes an armature that has an armature winding of multiple phases. The armature winding is configured by a conductor being wound. The conductor is configured by a plurality of wires being covered by an insulation coating in a state in which the plurality of wires are bundled. Each of the plurality of wires includes a conductor body configured to permit flow of a current, and a fusion layer that covers a surface of the conductor body. The fusion layer is configured to be thinner than the insulation coating. In the state in which the plurality of wires are bundled, fusion layers of the plurality of wires are fused and in contact with one another.
摘要:
A manufacturing apparatus includes a magnetizing yoke in which a magnet section to be magnetized is installed. The magnetizing yoke includes a core having slots formed at predetermined intervals in a circumferential direction, and a coil received in the slots. When installed with respect to the magnetizing yoke, the magnet section is arranged to face, at locations closer to a d-axis, magnetization surfaces of the core and face, at locations closer to a q-axis, the slots of the core. The magnetization surfaces of the core are formed between the slots adjacent to one another in the circumferential direction. The coil is fixed by a nonmagnetic and elastic fixing material in the slots. On a facing surface of the magnet section which faces the magnetizing yoke, there are radially-recessed grooves formed respectively in q-axis-side portions of the magnet section.
摘要:
A rotating electric machine is provided with a field magnet having a magnet unit including a plurality of magnetic poles having alternating polarities in a circumferential direction and a magnet supporting section having a cylindrical shape to which the magnet unit is fixed, and an armature having a multi-phase armature winding, disposed facing the magnet unit, either one of the field magnet or the armature being configured as a rotor. The magnet unit is configured annularly along the circumferential direction. The magnet unit is fixed to a fixed surface which is either an outer peripheral surface or an inner peripheral surface of the magnet supporting section via a foamable resin, and a thickness dimension of the foamable resin in a radial direction is set to be differentiated depending on a distance from the fixed surface of the magnet supporting section to an anti-armature side circumferential surface of the magnet.