Class / Patent application number | Description | Number of patent applications / Date published |
310216114 | End ring or plate | 40 |
20100079029 | LAMINATED CORE ARRANGEMENT WITH A CLAW-TYPE END PLATE - A laminated core arrangement includes a laminated core which has a multiplicity of individual laminates along a rotation axis of the electrical machine and has a plurality of cutouts which extend along the rotation axis. A claw-type end plate is arranged on one end face of the laminated core for securing the end individual laminate. The claw-type end plate has an annular inner area from which projections which are in the form of claws project outward in the form of a star, with the inner part of each of the projections pointing radially outward, and with the outer free end of each of the projections pointing into one of the cutouts in the laminated core. The claw-type end plate can be mounted together with the laminated core on a shaft in a single process step. | 04-01-2010 |
20100090561 | PROJECTING POLE ROTOR COMPRISING COIL END SUPPORT PLATES AND ROTARY ELECTRIC MACHINE COMPRISING ONE SUCH ROTOR - A rotor of a rotary electric machine comprising a rotor shaft, a stack of laminations, which is coaxial to the rotor shaft and which comprises at least two radially-projecting poles, a field coil which is wound around each pole, such that the ends of the coil project out axially in relation to each external axial end radial face of the lamination stack and two plates for supporting the lamination stack, which are disposed axially on either side of the stack, housings being provided in the internal radial face of each plate for receiving the coil ends. At least one of the housings comprises a contact surface with the external radial face of the associated coil end. | 04-15-2010 |
20110080068 | LAMINATED GENERATOR ROTOR STRUCTURE AND RELATED METHOD - A laminated generator rotor structure and a related method for repairing a rotor using a laminated rotor structure are disclosed. In an embodiment, the rotor body includes a stack of laminated plates flanked by end flange members, and placed in compression by at least one stud member passing through the laminated stack and secured by at least one fastener. | 04-07-2011 |
20110101819 | FIXING ENHANCEMENT MECHANISM FOR LARGE IRON CORE - A fixing enhancement mechanism for large iron core, including an iron core and two end rings. The iron core is composed of several arc-shaped bodies, which are successively connected in an annular form with their curvature centers coinciding with each other. The end rings are coaxially fixedly connected to two axial ends of the iron core respectively to keep the iron core in the annular form. The fixing reinforcement mechanism further includes an enhancement section having several rod-shaped enhancement members. The enhancement members are bridged between the two end rings in abutment with outer arc surfaces of the arc-shaped bodies. According to the fixing enhancement mechanism, the components for fixing the large iron core are simplified and the fixing performance is enhanced to keep the motor operating stably. | 05-05-2011 |
20110140567 | Low Noise Rotor or Stator of an Electric Motor or Generator and Method of Assembling the Same - A stator or rotor of an electric motor or generator comprises a core formed of ferromagnetic material having a plurality of teeth arranged circumferentially about an axis. In one aspect of the invention, at least one retaining member connects the end portions of at least two of the teeth to each other in a manner inhibiting relative movement between said tooth end portions. By inhibiting relative movement between said tooth end portions, vibration is reduced. Vibration can also be reduced by welding interior surfaces of a core to each other. Reducing the vibration reduces the noise emissions of the rotor or stator during operation. | 06-16-2011 |
20120104896 | ROTATING ELECTRIC MACHINE - A rotating electric machine includes a rotor configured to rotate about an axis. The rotor includes a rotor laminate stack having layered laminations pressed in an axial direction to form a composite, the rotor laminate stack being radially divided into an inner mechanical region and an outer electrical region. A rotor winding is disposed in the electrical region of the rotor laminate stack. A stator concentrically surrounds the rotor. A press plate is configured to press the layered laminations in the axial direction, the press plate being radially divided into a separate inner press plate and a separate outer press plate so as to correspond to the radial division of the rotor laminate stack. | 05-03-2012 |
20120112601 | ROTATING ELECTRIC MACHINE - A rotating electrical machine includes a rotor configured to rotate about an axis. The rotor includes a rotor lamination stack having a plurality of sheets pressed into a composite assembly in an axial direction and being radially divided into an inner mechanical part and an outer electrical part. A rotor winding is disposed in the electrical part of the rotor lamination stack. A stator is concentrically surrounding the rotor. A plurality of shear bolts is disposed in the mechanical part and configured to reach through the rotor lamination stack. A plurality of further bolts is disposed in the electrical part, the plurality of shear bolts and a plurality of further bolts being configured to press the plurality of sheets in the axial direction. | 05-10-2012 |
20120175995 | MOTOR STATOR - A motor stator includes a plurality of separate core segments, a plurality of coils, and a fixing ring. Each core segment includes a yoke and a tooth extending from the yoke. The yokes are connected to form a substantially circular core, with the teeth extending inwards. Each coil is wound around a corresponding tooth. The fixing ring is fixed to the outer surface of the core. | 07-12-2012 |
20120181894 | ROTOR FOR ROTARY ELECTRIC MACHINE - A rotor for a rotary electric machine, the rotor being arranged to face a stator and being roratably attached to a housing, the rotor includes a core body formed by a plurality of core sheets laminated in a direction of a rotational axis of the rotor, first and second end plates arranged at both end surfaces of the core body in a direction where the core sheets are laminated, and a fixing member fixing the first and second end plates to the core body to hold the core body by the first and second end plates, wherein at least one of the first and second end plates is formed by a plurality of composition members overlapping in a thickness direction of the first end plate and the second end plate. | 07-19-2012 |
20120299435 | METHOD FOR APPLYING A RETAINING SYSTEM ABOVE A ROTOR CORE OF AN ELECTRIC MACHINE AND ROTOR ASSEMBLY - A method for applying a retaining system above a rotor core of an electric machine includes providing a rotor including a rotor core, a rotor shaft and a coupling, cutting an inner ring from the rotor, connecting a retaining ring above the rotor core with a portion thereof extending above the rotor shaft, connecting the inner ring within a free end of the retaining ring, leaving a portion of the inner ring projecting from the retaining ring, providing an outer ring, connecting the outer ring above the projecting portion of the inner ring. | 11-29-2012 |
20130076197 | ROTOR FOR ELECTRIC ROTATING MACHINE AND METHOD FOR MANUFACTURING THE SAME - A rotor for an electric rotating machine includes a core body member formed, first and second end plates provided at respective side faces of the core body member, and a fixing member inserted into through holes provided at the core body member and the end plates. The end plates include positioning portions at an outer or inner circumferential surface, wherein when the fixing member is engaged with the end plates, the positioning portion is engageable with positioning receive portions corresponding to the positioning portions and positioning at radially outer or inner portion of the end plate. When one of the end plates is placed facing the side face of the core body member in a reversed state, the end plate and the core body member are not assembled each other by positional relationship between the positioning portions, the positioning receive portions and the through holes. | 03-28-2013 |
20130119820 | ELECTRIC MACHINE WITH END RING AND SUPPORTING TAB - An electric machine with a stator and a rotor. The rotor core is formed by a stack of laminations with the laminations being generally planar and oriented substantially perpendicular to the rotational axis. One of the laminations includes an axially projecting tab. An electically conductive end ring is located at an axial end of the rotor core and is in communication with a plurality of axially extending conductor bars on the rotor core. The tab is coupled with the end ring and resists a portion of the centrifugal forces acting on the end ring during rotation of the rotor. A plurality of such tabs may be used to provide support to the end ring. A method of manufacture is also disclosed. | 05-16-2013 |
20130154437 | SUPPORT RING FOR ELECTRIC MACHINE ROTORS - A support ring for a rotor having a core and a plurality of windings. The support ring includes an annular base, a plurality of fingers, and a plurality of loaded edges. The plurality of fingers extend radially outward from the annular base, and each generally corresponds to one of the windings. The plurality of loaded edges extend axially from the fingers and are disposed radially outward of the windings. | 06-20-2013 |
20130221794 | ROTOR END BAND - An end band and method of forming an end band for a rotor. The end band includes a hollow cylindrical band, wherein at least a portion of the band has a grain flow in a direction parallel to the hoop stress of the band. The end band also includes at least a portion having a grain flow in a direction perpendicular to the hoop stress of the band. | 08-29-2013 |
20140125191 | VIBRATION DAMPENING STRUCTURE FOR STEPPER MOTORS - A stepper motor has electromagnetically driven stator segments facing corresponding rotor segments. In order to reduce vibration of the stator segments, motor body end caps are provided with a stepped annular rim along an inside diameter of a centering sleeve. The stepped rim bears against each axial end of the stator segments, with a radial dimension and an axial dimension bracketing a stator segment end in place. | 05-08-2014 |
20140145548 | MOTOR - A material of the stator core is different from a material of the housings, in a state where one end portion in the axis direction of the stator core is contacted to the first housing, and the other end portion in the axis direction of the stator core is contacted to the second housing; and a neighboring portion of a contact portion, at which the first housing is contacted to the stator core, and another neighboring portion of a contact portion, at which the second housing is contacted to the stator core, are connected by a connecting component in the axis direction, of which material is the same as a material of the stator core, whereby the first housing and the second housing are connected each other; and the first housing and the second housing face each other in a state where a gap intervenes between both housings. | 05-29-2014 |
20150084478 | MOTOR - A stator core is sandwiched between a first frame and a second frame. A fastening member fastens the first frame and the second frame. The first frame includes a ring flange that is in contact with an attachment surface of the motor attachment portion. The flange includes a fixing portion fixed to the attachment surface and a fastening portion, which receives fastening force by the fastening member. The first frame includes a deform suppression portion for suppressing deformation of the fixing member when the fastening member is fastened. | 03-26-2015 |
310216115 | Insulated | 6 |
20090195115 | STATOR AND STATOR COMPONENTS OF DYNAMOELECTRIC MACHINES AND PROCESS OF INHIBITING JOULE HEATING THEREIN - A stator component whose composition and processing enable the component to axially compress magnetic sheets of a stator and also inhibit joule heating of the component to the extent that the need for a separate flux shield can be eliminated. The component is formed of a ductile iron alloy containing, by weight, about 3.25 to about 3.40% carbon, about 3.70 to about 3.80% silicon, about 4.50 to about 4.70% nickel, up to about 0.20% manganese, up to about 0.06% magnesium, less than 0.02% phosphorus, less than 0.02% sulfur, with the balance being iron and incidental impurities. Following heat treatment, the component exhibits properties that inhibit joule heating of the component by eddy currents induced by alternating magnetic fields of the stator. | 08-06-2009 |
20100060100 | CROSSOVER MODULE - Provided is a crossover module, which can facilitate the process of manufacturing a stator. The crossover module ( | 03-11-2010 |
20100283352 | END PLATES FOR HIGH SPEED GENERATOR APPLICATIONS - An end plate for a generator includes an end plate generally cylindrical and having a central bore to receive a rotor shaft. The end plate has a radially inner boss and a radially outer boss. The radially outer boss is positioned radially outwardly of windings in a generator. The radially inner boss is positioned radially inwardly of the windings in a generator. A main core assembly, a rotor, and a generator incorporating the end plates are all disclosed and claimed. | 11-11-2010 |
20120256515 | SPINDLE MOTOR - Disclosed herein is a spindle motor configured of a rotating part including a shaft and a magnet and a fixing part including a bearing supporting the shaft and an armature facing the magnet, the rotating part being rotated by electromagnetic force between the magnet and the armature, wherein the fixing part includes: a base plate supporting the shaft; a bearing holder mounted on an upper portion of the base plate and fixed to an outer diameter of the bearing; and a flexible printed circuit board attached on upper portions of the base plate and the bearing holder so that it is disposed between the base plate and the armature and the bearing holder and the armature, thereby insulating the base plate and the bearing holder from the armature. | 10-11-2012 |
20130270962 | END CAP FOR USE IN A STATOR ASSEMBLY AND METHOD OF ASSEMBLING THE STATOR ASSEMBLY - An end cap for use with a stator assembly is provided. The end cap includes a tooth portion, a yoke portion, and a lip. The tooth portion includes a first end and an opposite second end and the yoke portion is formed at the first end of the tooth portion. The yoke portion includes at least one arm that extends from the tooth portion. The lip is defined along at least one of the tooth portion and the at least one arm portion. | 10-17-2013 |
20140319960 | STATOR OF ELECTRIC ROTARY MACHINE AND FABRICATION METHOD THEREFOR - One embodiment provides a stator of an electric rotary machine, including: a stator core having plural slots; a segmented coil of plural phases; and plural base plates laminated at each end of the stator core in an axial direction. While the stator core and plural coil bars of the segmented coil form a stator core assembly, and the plural base plates and plural end coil connections of the segmented coil form plural base plate assemblies. The stator is configured by the stator core assembly and the plural base plate assemblies laminated at each end of the stator core assembly. | 10-30-2014 |
310216116 | Secured to shaft | 9 |
20110037340 | ROTOR OF AN ELECTRIC MOTOR AND METHOD OF MANUFACTURING THE SAME - In a manufacturing method of a rotor for an electric motor including: a core ( | 02-17-2011 |
20120019097 | ROTOR AND METHOD OF MANUFACTURING THE ROTOR - A rotor of the invention includes a core made of laminated steel sheets and formed with a rotation-transmitting-member mounting end face (a wall surface of a through hole for shaft) extending over a lamination direction and a rotation transmitting member (a shaft) mounted to the rotation-transmitting-member mounting end face of the core. The core is formed with a welding end face (a wall surface of a through hole for welding) extending over the lamination direction and in a position adjacent to a rotation-transmitting-member mounting end face. A welded trace is formed in the welding end face, extending to the rotation transmitting member and over the lamination direction of the core. The invention can easily achieve size reduction and weight reduction of a rotary machine and manufacture a rotor in the reduced number of working processes. | 01-26-2012 |
20130076198 | ROTOR FOR ELECTRIC ROTATING MACHINE AND METHOD FOR MANUFACTURING THE SAME - A rotor for an electric rotating machine includes a core body member formed with laminated core plates and a pair of end plates sandwiching opposing ends of the core body member. An output member is connected to an inner peripheral portion of one of the end plates with a connecting member. A first through-hole for allowing an insertion of the connecting member is press formed from the direction opposite to the direction outer and inner peripheral portions of the one of the end plates are press formed. Shear-droops formed at the outer and the inner peripheral portions of the one of the end plates during the press forming are arranged on the surface opposite to the surface thrusting the core body member. A shear-droop formed at the first through-hole during the press forming is arranged on the surface of the one of the end plates thrusting the core body member. | 03-28-2013 |
20130140937 | Rotor Core of Motor - Provided is a stacked rotor core of a motor, the rotor core including a thin disk-shaped rotor core member including a shaft hole extended to a direction of a rotation shaft, a key groove communicating with the shaft hole and a magnet, a shaft press-fitted into the shaft hole and concavely formed at a peripheral position corresponding to that of the key groove with a key accommodation groove, and at least one or more keys formed at the key groove and the key accommodation groove to restrict the rotor core member and the shaft. | 06-06-2013 |
20140375166 | Controlling End Ring Balance in Pre-Balancing Spinning Process - A rotor includes: a shaft; a core around the shaft; at least one end ring connected to rotor bars that are at least partially enclosed in the core; and means for balancing the end ring around the shaft in a pre-balancing spinning process. A method includes: assembling rotor bars so that they are at least partially enclosed in a core of a rotor; connecting an end ring to ends of the rotor bars; inserting a shaft into the core; step for balancing the end ring around the shaft in a pre-balancing spinning process that involves spinning the rotor; and spinning the rotor in the pre-balancing spinning process. | 12-25-2014 |
310216117 | With balancing weight | 4 |
20130140938 | BALANCED ROTOR CORE WITH REDUCED MASS AND INERTIA LAMINATIONS - A rotor core configured to rotate about an axis includes a first end lamination, a second end lamination, and a middle lamination, which is disposed axially between the first end lamination and the second end lamination. The middle lamination has a plurality of first apertures, and the first end lamination and the second end lamination do not have the first apertures. | 06-06-2013 |
20130328439 | DRIVE DEVICE - A drive device includes: a driven member; and an outer rotor type motor driving the driven member, wherein the outer rotor type motor comprises a rotor, the rotor includes: a rotational shaft connected to the driven member; a yoke secured to the rotational shaft; and a permanent magnet secured to the yoke, the yoke is provided with a balance portion for shifting a center of gravity of the yoke with respect to a rotational center of the yoke, and the balance portion reduces imbalance caused when the rotational shaft is rotated. | 12-12-2013 |
20140265717 | HIGH SPEED INDUCTION ELECTRICAL MACHINE - A unique electrical machine includes a plurality of fasteners extending only partially into a rotor core of an induction rotor through a short circuit ring, wherein the fasteners cooperate to balance the induction rotor and/or mechanically support the short-circuit ring. A unique method of assembling an electrical rotor machine includes extending fasteners into a rotor core of a rotor through a component, and employing the fasteners to balance the rotor and/or mechanically support the component. Other embodiments include apparatuses, systems, devices, hardware, methods, and combinations for electrical rotor machines. Further embodiments, forms, features, aspects, benefits, and advantages of the present application will become apparent from the description and figures provided herewith. | 09-18-2014 |
20150108870 | Rotary Electric Machine - A rotary electric machine may include a rotor that includes a laminated core arranged on a rotor shaft, wherein the rotor has at least one end-winding cover that encloses the laminated core in the axial direction of the rotor shaft, the end-winding cover has at least one inner face facing the laminated core, and a balancing ring is concentrically arranged around the rotor shaft on the inner face of the end-winding cover. | 04-23-2015 |
310216118 | Secured to frame | 8 |
20090212655 | AIRTIGHT-TYPE ELECTRIC MOTOR - An airtight-type electric motor capable of reducing vibration is provided. Inside ribs of a pair of end brackets and are respectively fitted into core end portions of a stator core. Outside ribs of the pair of end brackets and are respectively brought into contact against end surfaces of the core end portions of a yoke of the stator core. With this arrangement, the pair of end brackets and are fixed to the stator core, and a housing and the stator core are arranged, without being coupled together. | 08-27-2009 |
20090230812 | STATOR OF OUTER ROTOR TYPE MOTOR - A stator of an outer rotor type motor with high productivity and reliability is disclosed. To this end, the stator comprises a helical core having a plurality of stacked layers formed by winding a single metal sheet having a predetermined shape in the helical direction, a base and teeth protruded from the base, an insulator made of electrical insulation material and to surround the helical core, and recesses formed in a base of the helical core to reduce stress due to the winding of the metal sheet and disposed under the teeth. | 09-17-2009 |
20110109191 | GENERATOR STATOR UNIT - The invention relates to a generator stator configuration, comprising
| 05-12-2011 |
20110227446 | Stator for rotary electric machine and method for making same - An external stator for an electrical rotating machine, the stator including a substantially cylindrical sheath and a laminated magnetic circuit, said magnetic circuit comprising a first stack of yoke metal sheets arranged perpendicularly to the axis of the stator, the first stack forming an external covering for the magnetic circuit; and a second stack of star-shaped metal sheets arranged perpendicularly to the axis inside said external covering, the star-shaped sheets being made integral with said external covering; wherein the stack of yoke metal sheets is held in the sheath between a first axial stop integral with the sheath and a clamping washer, the clamping washer being shrink-fitted into the sheath. | 09-22-2011 |
20120098382 | ELECTRIC MOTOR - An electric motor, especially a brushless PMDC motor, has a stator and a rotor rotatably installed inside of the stator. The stator has a housing with an open end, an end cap fixed to the open end of the housing, a stator core fixed to an inner surface of the housing, and windings wound on the stator core. The rotor includes a plurality of permanent magnetic poles. The housing has a flange bent inwardly from the open end of the housing and abutting against the end cap inwardly and axially to thereby fix the end cap to the housing. The length of the flange measured along the circumferential direction of the housing is greater than half of that of the housing. | 04-26-2012 |
20120242186 | FIXING STRUCTURE FOR STATOR CORE AND ROTATING ELECTRIC MACHINE INCLUDING THE SAME - A fixing structure for a stator core includes a stator core, a ring member fitting on the stator core, and a case covering the stator core and the ring member. The case includes a fixing portion fixing the ring member, and a fitting portion fitting on the ring member. | 09-27-2012 |
20130020902 | ROTATIONAL ELECTRIC MACHINE AND METHOD FOR MANUFACTURING RETAINING RING FOR THE SAME - A rotational electric machine comprises a stator having a plurality of cores arranged in an annular ring shape and a retaining ring capable of retaining the plurality of cores on an inner circumferential surface so that a surface pressure is applied to an outer circumferential surface of the plurality of cores. The rotational electric machine further comprises a rotor provided radially inside of the stator facing the plurality of cores in a radial direction and rotatable relative to the stator. The stator and the rotor are mounted on a housing. The retaining ring is provided with a flange portion. The flange portion is formed on an axial middle portion of an outer circumferential surface of the retaining ring and to be attachable to the housing. | 01-24-2013 |
20140300245 | STATOR-CORE FIXING STRUCTURE FOR ROTATING ELECTRIC MACHINE - The objective is to prevent the flange of a ring member for holding the stator core from enlarging the diameter of a rotating electric machine and to eliminate a screwing space and a pedestal portion in the housing case so as to suppress the weight of the rotating electric machine from increasing; one end of the ring member for holding the stator core protrudes from the outer circumference of the stator core toward the rotation axle and the ring member is fixed to the cover or the housing case at the protruding portion. | 10-09-2014 |