Patent application number | Description | Published |
20140152128 | STATOR OF ROTARY ELECTRIC MACHINE INCLUDING RESTRICTING MEMBER FOR PREVENTING DEFORMATION OF COIL END PORTIONS AND ELECTRIC MOTOR INCLUDING SUCH STATOR - A stator of a rotary electric machine includes a stator core and coils. The stator core is provided with a plurality of slots extending in an axial direction and being spaced apart from one another in a circumferential direction. The coils are wound around through the slots. The coils include coil end portions which protrude outward in the axial direction from an end surface of the stator core. The stator includes a restricting member situated on an inner side of the coil end portions in the radial direction. The restricting member serves to prevent deformation of the coil end portions inward in the radial direction. | 06-05-2014 |
20140167551 | ROTOR OF INTERNAL PERMANENT MAGNET SYNCHRONOUS MOTOR AND INTERNAL PERMANENT MAGNET SYCNRONOUS MOTOR - A rotor of an internal permanent magnet synchronous motor including a rotor core, a plurality of slots formed in the rotor core, and a plurality of permanent magnets housed in the plurality of slots. Each of the slots includes a holding part formed between a first outside diameter surface and a first inside diameter surface to hold each of the permanent magnets, and an opening part formed at both sides of the holding part and formed by a second outside diameter surface, a second inside diameter surface and a connecting surface connecting them. The second outside diameter surface is formed to a curved shape so that a distance to an outer circumferential surface of the rotor core in the diametrical direction gradually becomes smaller from both ends of the second outside diameter surface to an intermediate part in the circumferential direction. | 06-19-2014 |
20140232218 | COOLING SYSTEM AND COOLING METHOD FOR COOLING ROTATING ELECTRICAL MACHINE - A cooling system and a cooling method, capable of reducing a temperature gradient of a rotating electrical machine by means of a simple structure, in relation to both axial and circumferential directions thereof. The cooling system has a coolant conveying device such as a pump, and a coolant cooling device such as a heat pump. The conveying device is fluidly communicated with a flow path via a coolant pipe | 08-21-2014 |
20140292135 | SQUIRREL-CAGE ROTOR AND ELECTRIC MOTOR HAVING SQUIRREL-CAGE ROTOR - A squirrel-cage rotor includes a laminated core provided on an outer circumference of a rotational axis, and a plurality of slots formed in the laminated core in a circumferential direction, so as to be spaced apart from each other. The cross-section shape of each slot includes an inner circumferential edge and an outer circumferential edge extending in the circumferential direction so as to face each other, and a first side portion and a second side portion extending in a radial direction so as to face each other. The radius of curvature of the inner circumferential edge is larger than that of corners on an inner circumferential side of the slot. The radius of curvature of the outer circumferential edge is larger than that of corners on an outer circumferential side of the slot. | 10-02-2014 |
20140300233 | ROTATOR MEMBER TO BE FIXED TO ROTARY SHAFT OF ROTARY ELECTRIC MACHINE, ROTATOR INCLUDING ROTATOR MEMBER, AND METHOD FOR MANUFACTURING ROTARY ELECTRIC MACHINE AND ROTATOR - A rotator member | 10-09-2014 |
20150188369 | ROTOR OF ELECTRIC MOTOR WITH MAGNET HOLDING STRUCTURE AND ELECTRIC MOTOR INCLUDING THE ROTOR - A rotor of an electric motor includes a plurality of magnets arranged in a circumferential direction. The rotor includes a holding member mounted concentrically with the rotor and on a radially outside of the magnets so as to hold the magnets. The holding member includes a plurality of tubular members having different diameters and being arranged concentrically with one another. The respective tubular members have expanded diameters, and therefore, compressive holding force acts on the magnets from the holding member, as a result of elastic restorative force. The tubular members include tubular members having different mechanical properties. | 07-02-2015 |
20150364960 | ROTOR MEMBER FIXED TO ROTARY SHAFT OF ELECTRICAL ROTATING MACHINE, ROTOR, ROTARY ELECTRIC MACHINE AND METHOD FOR DISASSEMBLING ROTOR - Provided is a rotor member that can contribute to an easy assembling operation and components thereof can be reused. The rotor member includes a magnet mounting member having a first end and a second end, a plurality of magnets arranged radially outwardly of the magnet mounting member, and a tubular holding member arranged radially outwardly of the plurality of magnets and holds the magnets between the holding member and the magnet mounting member. The magnet mounting member includes a slit that radially penetrates the magnet mounting member and extends in a predetermined axial-direction section. | 12-17-2015 |
20160111926 | MAGNET HOLDING MEMBER USED IN ROTATING ELECTRICAL MACHINE, ROTOR, ROTATING ELECTRICAL MACHINE, AND MACHINE TOOL - A magnet holding member capable of increasing the rotating speed and improving or maintaining reliability of a rotating electrical machine, a rotor having the magnet holding member, a rotating electrical machine having the rotor, and a machine tool having the rotating electrical machine. When one section between one axial end and another axial end of the rotor is referred to as one traverse, the holding member has a cylindrical shape formed by spirally winding a fiber bundle, which is unbroken over at least one traverse, on the outer periphery of the rotor, from one axial end to the other axial end. The holding member is constituted by an FRP having a resin as a matrix, and a terminal treatment by using reactive curable resin is carried out on at least one of a winding start end and a winding terminal end of the fiber bundle. | 04-21-2016 |