Abstract: A stator of an electric motor includes: a stator core that includes teeth; and a coil that includes a plurality of turns wound around the teeth. Windings of the coil extend through a slot between two adjacent teeth of the teeth. A side surface of at least one of the two adjacent teeth, the side surface facing the slot, is provided with a first protrusion that separates first two adjacent turns of the turns.

Abstract: An electric motor disclosed includes a cylindrical stator and a ring-shaped refrigerant pipe. The ring-shaped refrigerant pipe is disposed to be coaxial with the stator. The refrigerant pipe has discharge ports which face the stator and from which refrigerant is discharged, and a refrigerant inlet. The refrigerant inlet is positioned below the discharge ports.

Abstract: An electric motor disclosed includes: a stator that has a cylindrical shape; and a refrigerant pipe that has a ring shape and that is disposed coaxially with the stator. The refrigerant pipe includes an ejection hole that faces the stator, an inflow hole through which a refrigerant flows into the refrigerant pipe, and a discharge hole through which the refrigerant is removed from the refrigerant pipe. The discharge hole is positioned below the ejection hole and the inflow hole.

Abstract: A stator comprises a cylindrical stator core centered on an axis, a coil arranged wound around a tooth disposed on the stator core, the tooth protrudes to one side in radial direction of the stator core, and the stator comprises a resin portion sealing up each of the stator core and the coil, the resin portion has a gate mark that lies on one side with respect to the coil in the radial direction of the stator core, the gate mark lies on outer side with respect to an end face of the stator core in the axial direction, the gate mark overlaps in position with the coil in the radial direction of the stator core.

Abstract: A stator includes: a stator core with a slot; a coil attached to the stator core with a part of the coil inserted into the slot; and insulating paper. An opening of the slot in an end surface of the stator core that faces an axial direction includes an expanded portion whose width is increased in a direction in which a coil end portion of the coil that protrudes from the end surface is bent. The insulating paper is inserted into the slot to insulate the stator core from the coil, and accommodated in the expanded portion with a part of the accommodated insulating paper overlapping twice or more.

Abstract: A stator includes: a stator core; a coil attached to the stator core in a state in which a part of the coil is inserted into a slot provided in the stator core; and insulating paper configured to insulate the stator core and the coil, the insulating paper being inserted into the slot, in which a first surface of the coil includes a recessed portion in a range facing a corner of an opening portion of the slot on an end surface facing an axial direction of the stator core, the first surface facing a direction in which a coil end portion protruding from the end surface is bent.

Abstract: A drive device may include: a plurality of power lines respectively connected to coils attached to a stator core; a plurality of first terminals disposed respectively at ends of the plurality of power lines opposite to ends of the plurality of power lines that are connected to the coils; a terminal block; a plurality of second terminals supported by the terminal block, with the plurality of second terminals spaced from each other; a plurality of fastening members fixed to the terminal block and fastening the plurality of first terminals and the plurality of second terminals in pairs on one-to-one basis; and one or more partitions each formed by an insulator located between adjacent ones of the plurality of power lines.

Abstract: A stator core for a rotary electric machine and having a cylindrical shape centered on a central axis may include: a plurality of core blocks aligned in an axial direction parallel to the central axis, wherein each core block includes a plurality of electromagnetic steel plates stacked in the axial direction and integrated by being crimped; and a plurality of welded portions arranged on an outer peripheral surface of the stator core, in which each welded portion extends in the axial direction, in which the core blocks include a first block located farthermost on one side of the axial direction and a second block located farthermost on another side of the axial direction, and total length of the welded portions on the outer peripheral surface of the second core block is shorter than a total length of the welded portions on the outer peripheral surface of the first core block.

Abstract: A motor unit includes a motor, motor busbars, first terminals, a temperature measuring unit, a terminal block provided with second terminals, and a temperature sensor unit. The motor is stored in the case which is fixed to the terminal block. The motor busbars and the temperature measuring unit are connected to a coil of the motor. The first terminals are positioned on distal ends of the motor busbars. The second terminals are configured to be attached to and detached from the first terminals. The temperature sensor unit is fixed to the terminal block and is configured to be attached to and detached from the temperature measuring unit.

Abstract: The motor has a case in which a rib is provided on an outer peripheral surface. The rib has a first portion and a second portion having a smaller amount of protrusion from the outer peripheral surface than the first portion. The first portion extends in a polygonal grid and the second portion is adjacent to the first portion and extends along the first portion. Since the rib provided in the case of the motor has the first portion having a large protrusion amount and the second portion having a small protrusion amount, heat can be efficiently dissipated from the case.

Abstract: A rotary electric machine including a stator and a rotor. The stator includes: (a) a stator core provided with a plurality of teeth are spaced apart by a plurality of voids; (b) a plurality of coils which are wound on the teeth, and which are disposed in the voids, and (c) a plurality of mold resin portions which fill the voids, and which cover the coils. The mold resin portions have respective resin surfaces which are substantially flush with protruding surfaces of the respective teeth, and which cooperate with the protruding surfaces to constitute an inner circumferential surface of the stator. At least some of the mold resin portions have grooves which are provided in the resin surfaces thereof, and which extend in an axial direction parallel to the axis.

Abstract: A rotary electric machine including a stator and a rotor. The stator includes: (a) a stator core provided with a plurality of teeth are spaced apart by a plurality of voids; (b) a plurality of coils which are wound on the teeth, and which are disposed in the voids, and (c) a plurality of mold resin portions which fill the voids, and which cover the coils. The mold resin portions have respective resin surfaces which are substantially flush with protruding surfaces of the respective teeth, and which cooperate with the protruding surfaces to constitute an inner circumferential surface of the stator. At least some of the mold resin portions have grooves which are provided in the resin surfaces thereof, and which extend in an axial direction parallel to the axis.

Abstract: A stator comprises a cylindrical stator core centered on an axis, a coil arranged wound around a tooth disposed on the stator core, the tooth protrudes to one side in radial direction of the stator core, and the stator comprises a resin portion sealing up each of the stator core and the coil, the resin portion has a gate mark that lies on one side with respect to the coil in the radial direction of the stator core, the gate mark lies on outer side with respect to an end face of the stator core in the axial direction, the gate mark overlaps in position with the coil in the radial direction of the stator core.

Abstract: A compressed self-ignition type internal combustion engine includes a fuel injection nozzle provided such that a plurality of injection holes are exposed from a cylinder head of the internal combustion engine to a combustion chamber, and a plurality of hollow ducts configured such that an inlet and an outlet are exposed to the combustion chamber. The plurality of ducts are configured such that each fuel spray injected from the plurality of injection holes of the fuel injection nozzle passes from the inlet to the outlet. The internal combustion engine includes a heating device for heating at least one of the plurality of ducts.

Abstract: There are provided a reticle, a reticle unit, and an optical apparatus, such as a rifle scope, each having a novel configuration that allows formation of a desired pattern. In a reticle 30A1 on which a pattern that serves as an indicator when an object under observation is visually recognized is formed, the pattern is formed of protruding sections 33a and 33b provided on a pattern formation surface 31a of a plate-shaped optical member 31. The protruding sections 33a and 33b are each formed of a plurality of protruding ridges 133 (structural elements) extending in the lengthwise direction of a line that forms the pattern in parallel to the widthwise direction of the line.

Abstract: An electric conductive fiber structure includes an electric conductive resin containing electric conductive polymer(s), the electric conductive resin being filled in gaps between single fibers included in a fiber structure, the electric conductive fiber structure having 15% or more area ratio of the electric conductive resin present in an area of 15 to 30 ?m from a surface when a cross section in a thickness direction of the fiber structure is observed.

Abstract: The fuel injection timing IT is changed based operation and environmental condition of the engine. If the injection timing IT is changed, the rate of fuel passing through meshes of the mesh member (i.e., the mesh passing rate) changes. If the mesh passing rate changes, the set-off position (i.e., the ignition position of the air-fuel mixture) is extended or shortened. Based on this, under the condition of high ignition performance (i.e., the second condition), the mesh passing rate is controlled to increase thereby the set-off position is extended. On the other hand, under the condition of low ignition performance (i.e., the first condition), the mesh passing rate is controlled to decrease thereby the extension of the set-off position is suppressed or prohibited.

Abstract: There are provided a reticle, a reticle unit, and an optical apparatus, such as a rifle scope, each having a novel configuration that allows formation of a desired pattern. In a reticle 30A1 on which a pattern that serves as an indicator when an object under observation is visually recognized is formed, the pattern is formed of protruding sections 33a and 33b provided on a pattern formation surface 31a of a plate-shaped optical member 31. The protruding sections 33a and 33b are each formed of a plurality of protruding ridges 133 (structural elements) extending in the lengthwise direction of a line that forms the pattern in parallel to the widthwise direction of the line.

Abstract: A compressed self-ignition type internal combustion engine includes a fuel injection nozzle provided such that a plurality of injection holes are exposed from a cylinder head of the internal combustion engine to a combustion chamber, and a plurality of hollow ducts configured such that an inlet and an outlet are exposed to the combustion chamber. The plurality of ducts are configured such that each fuel spray injected from the plurality of injection holes of the fuel injection nozzle passes from the inlet to the outlet. The internal combustion engine includes a heating device for heating at least one of the plurality of ducts.

Abstract: The fuel injection timing IT is changed based operation and environmental condition of the engine. If the injection timing IT is changed, the rate of fuel passing through meshes of the mesh member (i.e., the mesh passing rate) changes. If the mesh passing rate changes, the set-off position (i.e., the ignition position of the air-fuel mixture) is extended or shortened. Based on this, under the condition of high ignition performance (i.e., the second condition), the mesh passing rate is controlled to increase thereby the set-off position is extended. On the other hand, under the condition of low ignition performance (i.e., the first condition), the mesh passing rate is controlled to decrease thereby the extension of the set-off position is suppressed or prohibited.