| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 310216121 | Secured to shaft | 21 |
| 20110043071 | ELECTRIC MOTOR AND ELECTRICAL MACHINERY EQUIPPED THEREWITH - An electric motor includes a stator including stator steel core ( | 02-24-2011 |
| 20110050029 | SHAFT-HUB COMPONENT AND METHOD FOR MANUFACTURING A COMPONENT OF THIS TYPE - The present invention relates to a method for manufacturing a shaft-hub component ( | 03-03-2011 |
| 20110050030 | ROTOR SHAFT - It is an object of the present invention to provide a rotor shaft capable of sufficiently securing a fastening strength between an inner shaft and an outer shaft, obtaining an excellent anti-rotation torque, and reducing a weight of the rotor shaft. A rotor shaft | 03-03-2011 |
| 20110278981 | ROTOR FOR ELECTRIC ROTATING MACHINE - A rotor for an electric rotating machine is provided. The rotor includes a shaft and a core which is fastened to an outer periphery surface of the shaft by shrink fitting. The shaft includes a fastening portion to which the core is fastened. A diameter of the fastening portion is smaller than a diameter of at least one other portion of the shaft. | 11-17-2011 |
| 20120032552 | Rotor and Process for Producing the Same - The invention relates to a rotor that exhibits a rotor shaft, by which a rotor axis is defined, and also a core stack that is arranged around the rotor shaft along a longitudinal portion of the rotor axis. Along the longitudinal portion the rotor shaft exhibits a first surface region, the shape of which describes a circular cylinder, and also a second surface region which is constituted by structural elements that with respect to the rotor axis rise radially outwardly above the first surface region. For the purpose of producing the rotor, the core stack can be pushed over the rotor shaft and in the process can be pushed against the structural elements) in such a manner that it is deformed and by this means a positive connection between the rotor shaft and the core stack is generated. In this way, in particularly simple manner in terms of production engineering a reliable and torsion-proof connection between the core stack and the rotor shaft can be formed. | 02-09-2012 |
| 20120326555 | ELECTRIC MOTOR HAVING SLEEVE MOUNTED TO ROTARY SHAFT WITH HIGH PRECISION - In an electric motor | 12-27-2012 |
| 20130076199 | ROTOR FOR ROTARY ELECTRIC MACHINE, AND ROTARY ELECTRIC MACHINE THAT USES THE ROTOR - A rotor for a rotary electric machine includes: a rotor shaft that is rotatably supported; and a rotor core that has a shaft hole in a central portion of the steel sheet stack, and that is tightened and fixed by thermal shrink fitting to a periphery of the rotor shaft inserted in the shaft hole, and that is made up of a stack of steel sheets. The rotor shaft has a reduced-interference portion at a position that corresponds to an end region of the rotor core in an axis direction of the rotor core, in a contact region of the rotor shaft which contacts an inner peripheral portion of the shaft hole of the rotor core. | 03-28-2013 |
| 20140368082 | LIMITING RADIAL EXPANSION IN ROTOR BALANCING - A rotor including: a shaft; a structure comprising at least one end ring and rotor bars, wherein at least the end ring comprises a material subject to expansion or movement radially outward from the shaft upon a rotor balancing process that involves spinning of the structure; a core that at least partially encloses the rotor bars; and means for limiting the expansion or movement of the structure radially outward. A method including: providing a structure comprising at least one end ring and rotor bars, wherein at least the end ring comprises a material subject to expansion or movement radially outward from the shaft upon spinning of the structure; assembling a rotor from the structure and a core, the core at least partially enclosing the rotor bars; spinning the rotor in a rotor balancing process; and limiting the expansion or movement of the structure radially outward in the rotor balancing process. | 12-18-2014 |
| 20150076956 | MOTOR SHAFT - A motor shaft onto the outer periphery of which a plurality of members are to be press-fitted includes a plurality of step portions which successively expand the outer diameter of the motor shaft from one end side, and a plurality of press-fit portions which are arranged adjacent to one end sides of the respective step portions and onto which the members are to be press-fitted. | 03-19-2015 |
| 20160056677 | ROTOR OF ROTATING ELECTRICAL MACHINE - The rotor includes a shaft, and a rotor core that is fitted and fixed to the shaft. The shaft includes a knurled portion on an end side and a small-diameter portion formed in a tip side via a first stepped surface. The rotor core includes a small diameter hole formed in a tip side end portion of the fitting hole press-fitted onto the small diameter portion, a large diameter hole formed in an end side of the small diameter hole via a second stepped surface, and a press-fitting portion press-fitted onto the knurled portion and is formed on an end side end portion of the large diameter hole. A space part is disposed between the first stepped surface and the second stepped surface. | 02-25-2016 |
| 310216123 | Keyed to shaft | 10 |
| 20100231085 | Pole Retention Configuration For Electric Machine Rotors - A retention system in which rotor pole pieces are retained within complementarily shaped channels in a rotor hub, permanent magnets are secured between the pole pieces and within clamp members, and wedge-shaped pieces are used to apply positive locking forces along the axial length of each clamp member and of adjacent pole pieces. A curable resin preferably in disposed within gaps between the permanent magnets and the clamp members. | 09-16-2010 |
| 20120242187 | ROTOR HUB KEYWAY AND RETAINED KEY ASSEMBLY - An electric motor comprises a rotor hub defining a first slot and a rotor stack defining a second slot. A rotor key has a shape corresponding to the cross-sectional shape of the first slot such that the rotor key is removably retained within the first slot. The rotor key is inserted into the first slot on the rotor hub and the second slot on the rotor stack. | 09-27-2012 |
| 20120256516 | ROTOR - A rotor is provided with a rotor core, a shaft fastening hole provided at the center of the rotor core, and magnets provided to the outer circumferential portion of the rotor core. Circular arc slits are formed at intervals on double concentric circles, respectively, so as to be located around the shaft fastening hole of the rotor core. The slits are arranged in such a manner that the outside slits on the outer circle are each located so as to block the portions located in the intervals between adjacent inside slits on the inner circle. | 10-11-2012 |
| 20130043761 | ROTOR AND ROTATING ELECTRIC MACHINE EQUIPPED WITH THE ROTOR - A rotor comprising: a rotating shaft with at least one keyway formed at an outer circumferential surface thereof and ranging along an axial direction; and a rotor core that includes a key that projects out on an inner circumferential side thereof, and is fitted in the keyway; wherein: a recessed portion that widens outward along a radial direction is formed at each of two sides of the key facing opposite each other along a circumferential direction at the rotor core; a planar portion is formed at a bottom area of the recessed portion so as to lessen stress occurring on each of the two sides of the key facing opposite each other along the circumferential direction; the planar portion is a straight contoured portion extending over a predetermined length along a direction perpendicular to a direction in which the key projects out, and a connecting side surface extending to an inner circumference of the rotor core is formed continuously to an end of the straight contoured portion located on a side opposite from a key side where a key is present; a first corner portion, connecting a side surface of the key with a key-side end of the straight contoured portion, is formed as a circular arc contoured portion; a second corner portion, connecting the end of the straight contoured portion, located on the side opposite from the key side, with the connecting side surface, is formed as a circular arc contoured portion; and dimensions and shapes of various portions are determined so as to substantially equalize stress levels in the first corner portion and in the second corner portion. | 02-21-2013 |
| 20130062991 | ROTATING ELECTRIC MACHINE - A rotating electrical machine is presented and includes a rotor, rotatable about an axis and is surrounded concentrically by a stator and has a hollow cylindrical rotor laminated core, which includes a layered lamination stack made up of a multiplicity of ring-section-shaped lamination segments which are acted upon by a pressing plate in order to distribute the pressure and are clamped by bolts which pass in an axial direction through the rotor laminated core, and which engages with a concentric central body of the rotor by means of axial slots on the internal radius of the rotor laminated core in order to transmit torque. The machine also includes slots formed in each case by pairs of radially inwardly aligned cams which are arranged on the internal radius of the lamination segments and are separated from one another by the width of the slot. | 03-14-2013 |
| 20130234557 | ROTOR FOR ELECTRIC MOTOR INCLUDING ROTATIONAL SHAFT AND YOKE SECURELY FITTED ON THE ROTATIONAL SHAFT - According to the present invention, in a rotor of an electric motor including a rotational shaft and a yoke fitted on an outer circumferential surface of the rotational shaft, fitting between an inner circumferential surface of the yoke and the outer circumferential surface of the rotational shaft is interference fit. Further, fitting between a convex portion (or concave portion) formed on the outer circumferential surface of the rotational shaft and a concave portion (or convex portion) formed on the inner circumferential surface of the yoke is also interference fit. | 09-12-2013 |
| 20130293057 | ROTOR STRUCTURE FOR ELECTRIC MOTOR - A rotor structure for a rotary machine in which a rotor ( | 11-07-2013 |
| 20140084744 | ROTARY ELECTRIC MACHINE - In a rotary electric machine having a rotor core of a skew structure, when one of the core blocks is sequentially stacked on the other of the core blocks to form a step skew, a communication reference groove is formed along an axial direction of the rotor core by aligning a side section of a short protruding section in one core block with a side section of the long protruding sections in the other core block, and by aligning a side section of a long protruding section in one core block with a side section of a short protruding section in the other core block. The core blocks are correctly stacked by aligning the side section of the long protruding sections with the side section of the short protruding sections. | 03-27-2014 |
| 20140339952 | ROTOR STRUCTURE OF DRIVE MOTOR - A rotor structure of a drive motor is provided. In the rotor structure of a driving motor, a rotor core is divisionally formed in a plurality of core blocks and the core blocks may be combined around an outer side of a rotary shaft. | 11-20-2014 |
| 20150069879 | ELECTRIC MACHINE HAVING REDUCED TORQUE OSCILLATIONS AND AXIAL THRUST - A component that includes a longitudinal axle, having a multiple keybars that extend outward from a surface of the axle, such that each of the keybars are disposed axially along and circumferentially around the axle. Also the axis of the keybars is parallel to the axle, such that a profile of all midpoints of the keybars is helicoidal around the axle, also the helicoidal profile is such that they make up one or more helicoidal paths. The profile may be herringbone skewed. The component may be part of a rotor assembly that is part of an electric machine such as an interior permanent magnet (IPM) or Synchronous Reluctance motor. | 03-12-2015 |
| 310216124 | Resilient securing means | 1 |
| 20140145549 | ROTOR FOR ELECTRIC MOTOR - A rotor for an electric motor includes: an engagement portion formed in a groove shape in an outer periphery of a rotor shaft; and an annular ring member that is attached to the engagement portion such that an elastic force acting in a direction for clamping the rotor shaft is generated in order to restrict movement of the rotor core in a single direction along an axis of the rotor core. An outer diameter of the rotor shaft in the engagement portion increases steadily away from the rotor core.) | 05-29-2014 |
