Abstract: A vehicle loads at least one of a plurality of upper units having space to store a person or an object on an under unit including a drive mechanism that rotates wheels in the vehicle. The vehicle includes an under unit including a drive mechanism that rotates wheels and the at least one of the plurality of upper units loaded on the under unit. The under unit includes a loading unit, on which the at least one of the plurality of upper units as described above can be loaded. Each of the plurality of upper units includes a joint that joins to a different upper unit that is adjacently loaded.

Abstract: The present disclosure makes it possible to freely exchange interior of a vehicle. An interior unit according to the present disclosure is provided with: a frame portion attachable to and detachable from a vehicle; and interior parts installed on the frame portion. The frame portion is foldable, or extendable and contractible.

Abstract: A vehicle according to the present disclosure comprises an under unit which is equipped with a driving mechanism configured to rotate wheels of the vehicle, and an upper unit which is mounted on the under unit. The upper unit comprises an extension/contraction mechanism which is configured to extend or contract the upper unit according to a size of the under unit.

Abstract: A method of producing a rotating electric machine stator includes an insertion step, bending step, and pressing step. In the insertion step, two leg portions of each U-shaped coil wire of a stator coil are inserted into different slots, such that protruding portions as distal end portions of the leg portions protrude in parallel with an axial direction of the stator core. In the bending step, the protruding portion of a first leg portion is bent in a first circumferential direction of the stator core, at a proximal end portion of the protruding portion as a bending start point, from a condition where the protruding portion protrudes from the slot in parallel with the axial direction of the stator core. In the pressing step, a distal end of the protruding portion bent in the first circumferential direction is pressed toward its proximal end in a second circumferential direction.

Abstract: A joining method for coil ends includes: pressing a pair of tapered portions such that a pair of first pressing jigs provided with a pair of detent portions is brought closer to the coil ends along an axial direction of the stator core, the pair of detent portions being fitted to the tapered portions; fixing axial positions of the pair of tapered portions such that the pair of detent portions is fitted to the pair of tapered portions so that the pair of tapered portions is sandwiched in a circumferential direction; fixing radial positions of the pair of tapered portions such that the pair of tapered portions is sandwiched by a pair of second pressing jigs so that the tapered portions of the pair of tapered portions make contact with each other; and welding a contacting portion where the tapered portions make contact with each other.

Abstract: A coil includes a plurality of segment coils. Ends of two corresponding segment coils are electrically connected together via a coupling member or by being fitted together. Each of the plurality of segment coils includes a conductor-exposed portion located close to a connection portion between the corresponding segment coils and to be brought into contact with a probe of a resistance measurement apparatus. When the coil is manufactured, the ends of the plurality of segment coils are electrically connected to the ends of other corresponding segment coils, and electric resistances of connection portions between the ends are measured for each layer of the ends of the segment coils.

Abstract: Provided is a manufacturing method for a stator coil in which end portions of one-side conductor segments inserted into slots from the side of one end in an axial direction of a stator core and end portions of other-side conductor segments are connected to each other through coupling members inside the slots. The method includes: pressing in the one-side conductor segment or the other-side conductor segment in an insertion direction in a state where the end portion of the one-side conductor segment or the end portion of the other-side conductor segment, or an end portion of the coupling member has been moved toward the inner circumferential side of the stator core; connecting the end portion of the one-side conductor segment and the end portion of the other-side conductor segment to each other; and executing the pressing in and the connecting sequentially from the outer circumferential side of the stator core.

Abstract: Provided is a stator manufacturing method including: inserting a plurality of segment coils into a plurality of slots formed in a stator core; bending arms of the segment coils that protrude from the stator core, in a circumferential direction of the stator core; before or after bending the segment coils in the circumferential direction, directing parallel to each other leading end portions of the segment coils that are adjacent to each other in a radial direction of the stator core; and welding together the leading end portions of the segment coils with the leading end portions directed parallel to each other.

Abstract: A bending-forming jig used in bending and forming a protruding portion of a leg portion of a U-shaped conductor toward a circumferential direction, the protruding portion protruding from an axial end surface of a stator core, the bending-forming jig including a ring portion and a claw portion, the claw portion including a first abutting surface that rises from an axial end surface of the ring portion with the surface directed in the circumferential direction and abuts against a tip portion of the protruding portion from the circumferential direction, and a projecting portion that projects, at a tip end of the claw portion, in the circumferential direction from the abutting surface and abuts against the tip portion of the protruding portion from the axial direction toward the axial end surface of the ring portion.

Abstract: An aim of a coil segment having an approximate U shape is placed in a slot of a stator core, and a portion protruding from the slot is bent in a circumferential direction. An arm is bent in a direction of an arrow A, and another arm positioned at an inner side in the radial direction in relation to this arm is bent in a direction of an arrow B. The arm positioned at the outer side has at least a part of a bending inner side surface of a bent portion hardened by pressurization.

Abstract: A method of producing a rotating electric machine stator includes an insertion step, bending step, and pressing step. In the insertion step, two leg portions of each U-shaped coil wire of a stator coil are inserted into different slots, such that protruding portions as distal end portions of the leg portions protrude in parallel with an axial direction of the stator core. In the bending step, the protruding portion of a first leg portion is bent in a first circumferential direction of the stator core, at a proximal end portion of the protruding portion as a bending start point, from a condition where the protruding portion protrudes from the slot in parallel with the axial direction of the stator core. In the pressing step, a distal end of the protruding portion bent in the first circumferential direction is pressed toward its proximal end in a second circumferential direction.

Abstract: A joining method for coil ends includes: pressing a pair of tapered portions such that a pair of first pressing jigs provided with a pair of detent portions is brought closer to the coil ends along an axial direction of the stator core, the pair of detent portions being fitted to the tapered portions; fixing axial positions of the pair of tapered portions such that the pair of detent portions is fitted to the pair of tapered portions so that the pair of tapered portions is sandwiched in a circumferential direction; fixing radial positions of the pair of tapered portions such that the pair of tapered portions is sandwiched by a pair of second pressing jigs so that the tapered portions of the pair of tapered portions make contact with each other; and welding a contacting portion where the tapered portions make contact with each other.

Abstract: A joining method for coil ends includes: pressing a pair of tapered portions such that a pair of first pressing jigs provided with a pair of detent portions is brought closer to the coil ends along an axial direction of the stator core, the pair of detent portions being fitted to the tapered portions; fixing axial positions of the pair of tapered portions such that the pair of detent portions is fitted to the pair of tapered portions so that the pair of tapered portions is sandwiched in a circumferential direction; fixing radial positions of the pair of tapered portions such that the pair of tapered portions is sandwiched by a pair of second pressing jigs so that the tapered portions of the pair of tapered portions make contact with each other; and welding a contacting portion where the tapered portions make contact with each other.

Abstract: A coil bending machine is a machine that, in a stator core including a yoke and multiple teeth and having a slot formed between circumferentially adjacent teeth, while lead portions of a segment coil which is a U-shaped lead wire including a bent portion K and two lead portions R extending from the bent portion are inserted into two slots, push-bends end portions of the lead portions protruding from an axial end face of the stator core toward the stator core. The coil bending machine includes a coil bending member that push-bends the end portions of the lead portions protruding from the axial end face of the stator core toward the stator core, and a coil pressing mechanism that press-fixes a segment coil inside the slot toward the yoke, from the radially inner side of the stator core.

Abstract: A method of manufacturing an assembled conductor includes: arranging a plurality of peripheral wires having anisotropic cross-sectional shapes around a central wire; bundling the central wire and the peripheral wires that have been arranged, to form a conducting wire bundle; and rolling the conducting wire bundle to form the assembled conductor. The arranging includes a bending process for bending the plurality of peripheral wires in directions along imaginary lines that extend radially relative to an axis of the central wire on an imaginary plane intersecting the axis of the central wire.

Abstract: A joining method for coil ends includes: pressing a pair of tapered portions such that a pair of first pressing jigs provided with a pair of detent portions is brought closer to the coil ends along an axial direction of the stator core, the pair of detent portions being fitted to the tapered portions; fixing axial positions of the pair of tapered portions such that the pair of detent portions is fitted to the pair of tapered portions so that the pair of tapered portions is sandwiched in a circumferential direction; fixing radial positions of the pair of tapered portions such that the pair of tapered portions is sandwiched by a pair of second pressing jigs so that the tapered portions of the pair of tapered portions make contact with each other; and welding a contacting portion where the tapered portions make contact with each other.

Abstract: A method of manufacturing an assembled conductor includes: arranging a plurality of peripheral wires having anisotropic cross-sectional shapes around a central wire; bundling the central wire and the peripheral wires that have been arranged, to form a conducting wire bundle; and rolling the conducting wire bundle to form the assembled conductor. The arranging includes a bending process for bending the plurality of peripheral wires in directions along imaginary lines that extend radially relative to an axis of the central wire on an imaginary plane intersecting the axis of the central wire.

Abstract: The invention provides an assembled conductor, which is formed by rolling a conductor bundle including a central conductor and a peripheral conductor arranged around the central conductor. The central conductor has a shape in which a right-twisted portion of the central conductor and a left-twisted portion of the central conductor are arranged alternately in predetermined intervals. The right-twisted portion of the central conductor extends from one end side of the central conductor to the other end side of the central conductor and is twisted in a clockwise direction, and the left-twisted portion of the central conductor extends from the one end side of the central conductor to the other end side of the central conductor and is twisted in a counterclockwise direction. The peripheral conductor is arranged around the central conductor so that a twist direction of the peripheral conductor becomes opposite to a twist direction of the central conductor.