Abstract: An electric snowmobile that can reduce a load locally applied to a body frame is provided. The electric snowmobile includes a body frame, a right ski and a left ski, a track mechanism, a steering shaft, an electric motor, and a battery. The body frame includes a shaft support frame that rotatably supports the steering shaft, a front frame that extends forwardly and downwardly from the shaft support frame, and a rear frame that extends rearwardly and downwardly from the shaft support frame. The battery is supported by the front frame and the rear frame such that at least a portion of the battery is disposed in a region formed by a line connecting the front frame, the rear frame, a lower end of the front frame, and a lower end of the rear frame in a side view.

Abstract: An electric snowmobile that performs heat exchange with a simple structure is provided. The electric snowmobile includes a body frame, a driver's seat, an electric motor, a ski, a track mechanism, a battery, a cooling unit that cools fluid at least in accordance with outside air, a first heat exchange unit that performs heat exchange between the battery and the fluid, a second heat exchange unit that performs heat exchange between the electric motor and the fluid, a first flow path for delivering the fluid cooled in the cooling unit to the first heat exchange unit, a second flow path for delivering the fluid cooled in the cooling unit to the second heat exchange unit, and a third flow path for delivering the fluid heat-exchanged in the first heat exchange unit and the fluid heat-exchanged in the second heat exchange unit to the cooling unit.

Abstract: An electric snowmobile that performs heat exchange with a simple structure is provided. The electric snowmobile includes a body frame, a driver's seat, an electric motor, a ski, a track mechanism, a battery, a cooling unit that cools fluid at least in accordance with outside air, a first heat exchange unit that performs heat exchange between the battery and the fluid, a second heat exchange unit that performs heat exchange between the electric motor and the fluid, a first flow path for delivering the fluid cooled in the cooling unit to the first heat exchange unit, a second flow path for delivering the fluid cooled in the cooling unit to the second heat exchange unit, and a third flow path for delivering the fluid heat-exchanged in the first heat exchange unit and the fluid heat-exchanged in the second heat exchange unit to the cooling unit.

Abstract: An electric snowmobile that prevents temperature rise of a control unit is provided. An electric snowmobile includes a body frame extending in a front-rear direction, a driver's seat supported by the body frame, an electric motor supported by the body frame, a ski supported by the body frame, a track mechanism including a track belt, supported by the body frame below the driver's seat, a battery that supplies electric power to the electric motor, and an inverter including an electronic component controlling a rotation of the electric motor and a housing for housing the electronic component. An opening is formed in the body frame so that a portion of the inverter is exposed from the opening to face the track belt.

Abstract: An electric snowmobile that can reduce a load locally applied to a body frame is provided. The electric snowmobile includes a body frame, a right ski and a left ski, a track mechanism, a steering shaft, an electric motor, and a battery. The body frame includes a shaft support frame that rotatably supports the steering shaft, a front frame that extends forwardly and downwardly from the shaft support frame, and a rear frame that extends rearwardly and downwardly from the shaft support frame. The battery is supported by the front frame and the rear frame such that at least a portion of the battery is disposed in a region formed by a line connecting the front frame, the rear frame, a lower end of the front frame, and a lower end of the rear frame in a side view.

Abstract: A vehicle includes three pairs of wheels, each pair being spaced apart in a right-left direction, three differential gears, respectively corresponding to the three pairs of wheels, and an engine that generates a rotation to be transmitted to the three pairs of wheels through the three differential gears. The engine is located rearward of a front differential gear that is any one of the three differential gears and is fixed to the front differential gear.

Abstract: The magnet cutting device includes a pair of supporting portions spaced apart by a predetermined distance and configured to support the magnet from a bottom side, a blade configured to press the magnet supported by the pair of supporting portions from an upper side of the magnet, and a magnet supporting tool arranged between the pair of supporting portions to support the magnet from the bottom side of the magnet. A surface of the magnet supporting tool to be held in contact with the magnet is shaped such that a central part of an upper end is higher than the upper ends of the pair of supporting portions and an end part of the upper end is lower than the upper ends of the pair of supporting portions when the magnet is placed on the surface, the upper end having a slope connecting the central part and the end part.

Abstract: A vehicle includes three pairs of wheels, each pair being spaced apart in a right-left direction, three differential gears, respectively corresponding to the three pairs of wheels, and an engine that generates a rotation to be transmitted to the three pairs of wheels through the three differential gears. The engine is located rearward of a front differential gear that is any one of the three differential gears and is fixed to the front differential gear.

Abstract: A manufacture method that includes positioning the permanent magnet body of which a surface is coated with a coating film for deterioration prevention, a scheduled cleavage portion of the permanent magnet body being located between two fulcrums, which are edge portions of a die, supporting the permanent magnet body, and cleaving the permanent magnet body into a cleaved magnet body and the magnet piece by pressing the scheduled cleavage portion of the permanent magnet body is provided. The manufacture method also includes cutting the coating-film between the cleaved magnet body and the magnet piece by pressing an end portion of the cleaved magnet piece from a pressing side of the scheduled cleavage portion, the end portion being on a side opposite to a cleavage surface side.

Abstract: A magnet insertion method into a rotor core is to insert an assembly into a magnet insertion hole provided in the rotor core of an electric motor, the assembly being formed by laminating a plurality of members, including at least a plurality of magnet pieces, in a line. According to this magnet insertion method, the assembly is formed by arranging a front member, having a surface surrounded by a chamfered ridge line, to cause the surface to be a front side end surface upon insertion, by laminating, on its rear side in an insertion direction, other members, without having the chamfered ridge line, in a line along the insertion direction to cause the other members to be hidden inside a projection of the front member when being projected from an insertion hole side, and by temporarily holding the front member and the other members.

Abstract: An apparatus for manufacturing magnet segments constituting a field pole magnetic body formed by cleaving a magnetic body at a plurality of scheduled cleaving parts is provided. The apparatus includes placing tables on which a magnetic body having a coating applied to an outer surface thereof is placed, a pressing unit that cleaves the magnetic body by pressing the magnetic body from an opposite side of an incision at a scheduled cleaving part arranged between two of the placing tables, and a cutting unit that cuts the coaling of the magnetic body present at the scheduled cleaving part after the magnetic body is cleaved, by applying a moment in a direction opposite to a moment generated in the magnetic body between the two placing tables at the time of cleaving. Cleaving divides the magnetic body into a magnet segment and an uncleaved magnetic body.

Abstract: A device for manufacturing a field pole magnet body includes a reference jig having reference surfaces in a lengthwise direction, a width direction, and a thickness direction for positioning the plurality of cleaved and divided magnet fragments; a lengthwise direction pressing means that presses the magnet fragments from the lengthwise direction to the lengthwise direction reference surface; a width direction pressing means that presses them from the width direction to the width direction reference surface; and a thickness pressing means that presses them from the thickness direction to the thickness direction reference surface. The lengthwise direction pressing means is operated to press the magnet fragments in a state in which a pressing force of at least one of the width direction pressing means and the thickness direction pressing means is suppressed to be weaker than a pressing force generated by the lengthwise direction pressing means or is released.

Abstract: A rectangular wire is wound on a stator core having a plurality of teeth and a plurality of slots. A plurality of rectangular wire elements is provided by cutting a rectangular wire into a predetermined length and bending into a substantial U-shape. A plurality of rectangular wire pieces configured to form a coil by connecting predetermined end portions of the rectangular wire elements is molded as a sub-assembly. Each of the plurality of the rectangular wire elements is inserted into a predetermined pair of the slots from a first end face of the stator core such that the respective end portions of the rectangular wire elements project from a second end face of the stator core. The rectangular wire pieces of the sub-assembly are fixed to the end portions of the rectangular wire elements, thereby manufacturing a stator coil having compact coil ends easily.

Abstract: A magnet inserting apparatus into magnet insertion slots of a rotor core is configured to arrange a guide tape (a belt-shaped member) along an inner wall surface of the magnet insertion slot, and the guide tape having a coefficient of friction smaller than that of the inner wall surface of the magnet insertion slot. The magnet inserting apparatus is configured to insert the magnet parts into the magnet insertion slot, the guide tape (the belt-shaped member) being arranged on the inner wall surface of the magnet insertion slot.

Abstract: A manufacturing device for cleft magnets comprises a cleaving mechanism for cleaving a magnet plate by applying a pressing force to the magnet plate corresponding to a back of a groove formed on one surface of the magnet plate and a carry-in mechanism for carrying the magnet plate to a cleaving position by the cleaving mechanism. By comprising a foreign matter removal mechanism for removing a foreign matter adhering to the magnet plate before the magnet plate is carried to the cleaving position by the carry-in mechanism, the foreign matter adhering to the magnet plate is removed before cleaving.

Abstract: A cutting method and a cutting device of cutting a magnet body including a coating film feed, in a state where the magnet body in which cutout grooves serving as brittle sections are provided on a lower surface along cutting planned positions is supported by dies serving as two support points from the lower side, the magnet body to a position where the brittle section is arranged between both the support points, and press the magnet body from the upper side of a position offset rearward in the feeding direction from the brittle section between both the support points, so as to cut the magnet body into a cut magnet body and a magnet piece smaller than the cut magnet body while cutting the coating film.

Abstract: A magnet inserting apparatus inserts a plurality of magnet parts into each of the magnet insertion slots provided in the rotor core of a motor. The magnet inserting apparatus comprises a guiding unit equipped with a magnet inlet and a magnet outlet and is configured to align the plurality of magnet parts inserted through the magnet inlet until the inserted magnet parts are ejected from the magnet outlet, and to guide the aligned magnet parts so as to be inserted from the magnet outlet to the magnet insertion slot. A size of the magnet inlet of the guiding unit is larger than a size of the magnet insertion slot, a size of the magnet outlet is the same as or smaller than the size of the magnet insertion slot, and the guiding unit is formed so that a shape from the magnet inlet to the outlet becomes a taper shape.

Abstract: A rectangular wire is wound on a stator core having a plurality of teeth and a plurality of slots. A plurality of rectangular wire elements is provided by cutting a rectangular wire into a predetermined length and bending into a substantial U-shape. A plurality of rectangular wire pieces configured to form a coil by connecting predetermined end portions of the rectangular wire elements is molded as a sub-assembly. Each of the plurality of the rectangular wire elements is inserted into a predetermined pair of the slots from a first end face of the stator core such that the respective end portions of the rectangular wire elements project from a second end face of the stator core. The rectangular wire pieces of the sub-assembly are fixed to the end portions of the rectangular wire elements, thereby manufacturing a stator coil having compact coil ends easily.

Abstract: A one-piece field-pole magnet is manufactured by filling a gap formed between magnetic pieces placed on a plane with an adhesive or resin. During the process, a pushing member applies a pushing force onto each of the magnet pieces in a thickness direction thereof. The pushing member comprises pushing parts each of which pushes each of the magnet pieces, thereby equalizing the pushing forces applied to the respective magnet pieces.

Abstract: A magnet evaluating device evaluates an evaluation magnet by passing the evaluation magnet, which is formed by connecting a plurality of magnetic sections with insulating material in between, and a master magnet of the same form through an alternating magnetic field generated by an excitation coil, measuring the eddy current occurring in the magnetic section as voltage or current occurring in a detection coil and comparing the measured value for the evaluation magnet and the measured value for the master magnet.