| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 310156210 | With an adhesive | 38 |
| 20090026867 | ROTOR AND ELECTRIC VEHICLE - A rotor includes a rotor core fixedly attached to a rotational shaft and having a plurality of hole portions arranged in the circumferential direction, a magnet inserted into a plurality of hole portions each, and a filling portion injected into the hole portion. The filling portion is injected into the hole portion from a gate facing a central part in the width direction of the magnet in the opening of the hole portion. | 01-29-2009 |
| 20090072648 | OUTWARD TURNING MOTOR ROTOR FOR A CEILING FAN - An outward turning motor rotor for a ceiling fan includes a stator and a rotor positioned around the outer circumference of the stator. The rotor contains a circular-case base having its circumference disposed with a circumferential wall having plural permanent magnets equidistantly and annularly secured thereon. Each permanent magnet has one side facing the stator tapered gradually from an intermediate portion toward a left end and a right end, letting the opposite ends of each permanent magnet respectively formed with a comparatively thin pole portion and lengthening a distance between the pole portions of each permanent magnet and the stator. In change-over motion, a comparatively small magnetic force produced by the pole portions of the rotor will stabilize vibration produced, greatly lowering noises caused by rotation of the rotor. | 03-19-2009 |
| 20100045132 | ROTOR FOR AN ELECTRIC MOTOR - The invention relates to a rotor for an electric motor, comprising a rotor shaft, a rotor core stack that is attached to the rotor shaft, a ring member which surrounds the rotor core stack, and a gap located between the rotor core stack and the ring member. Adhesive is introduced into the gap for fastening the ring member to the rotor core stack. Molded articles that are used as spacers are admixed to the adhesive. | 02-25-2010 |
| 20100066190 | Permanent Magnet Rotor with Accommodating Pockets, Sealed by Means of an Adhesive Film, for the Permanent Magnets - The invention relates to a permanent magnet rotor, which has a rotor shaft, a rotor stack fixed on the rotor shaft, accommodating pockets provided in the rotor stack and permanent magnets positioned in the accommodating pockets. The accommodating pockets are sealed by means of an adhesive film, as a result of which the permanent magnets are fixed in the accommodating pockets and at the same time the ingress of particles into the accommodating pockets and the discharge of particles out of the accommodating pockets is prevented. | 03-18-2010 |
| 20100194226 | MAGNET MODULE FOR A PERMANENT-MAGNET ELECTRICAL MACHINE - An electric machine excited by a permanent magnet, particularly a larger generator of a wind power station, is to be produced and assembled easily. According to the invention, magnetic modules ( | 08-05-2010 |
| 20100231078 | Rotor of Permanent Magnet Rotating Electric Machine - A permanent magnet rotating electric machine has a stator provided with a plurality of windings, and a rotor in which magnets are disposed in slots formed in a rotor core along an outer circumference thereof. The rotor core is fixed on a rotary shaft rotating inside the stator, and one magnetic pole is constituted by each group of three or more of the magnets. A total angle occupied by the group of magnets constituting one magnetic pole is in the range of 150 to 165 degrees in terms of an electrical angle. | 09-16-2010 |
| 20100244607 | ROTOR OF ROTARY ELECTRIC MACHINE AND METHOD OF MANUFACTURING THE SAME - In a rotor of a permanent magnet rotary electric machine, a bonding portion between each of segment shaped magnets and an outer circumference face of a rotor core is provided in axial symmetry with respect to the rotor axial center and has a bonding area equal to or larger than a half of a contact area between each of the segment shaped magnets and the outer circumference face of the rotor core; and a biasing force is applied to an outer circumference face of the segment shaped magnets by a ring. | 09-30-2010 |
| 20100295401 | MOTOR AND DEVICE USING THE SAME - A motor includes a stator which includes: a stator core having an annular stator yoke, a plurality of outer teeth projecting outward from the stator yoke, and a plurality of inner teeth having the same number of teeth as the outer teeth and projecting inward from the stator yoke; and a plurality of windings wound on the stator core, and the motor includes an outer rotor confronting the outer teeth via an air gap and an inner rotor confronting the inner teeth via an air gap. The outer rotor and the inner rotor have holes for accommodating permanent magnets respectively. The permanent magnets having a rectangular shape in sectional views thereof are accommodated in the holes. | 11-25-2010 |
| 20110198959 | INTERIOR PERMANENT MAGNET MACHINE - An interior permanent magnet (IPM) machine having a rotor and a stator is provided. The rotor includes a radially inner barrier devoid of magnets, and a radially outer barrier having at least one permanent magnet, each barrier having two pockets with one pocket disposed at an angle relative to the other. At least one of the pockets of the inner barrier has a shape of an irregular quadrilateral. At least one of the pockets of the outer barrier has a substantially trapezoidal shape with a first side generally parallel to a second side, wherein the first side has a portion slanted relative to the third side. In such an IPM machine, demagnetization of the outer barrier magnet is limited when operating temperatures and electrical current exceed operating conditions prescribed by design specifications. | 08-18-2011 |
| 20110210635 | Magnet Rotor Assembly With Increased Physical Strength - A magnet rotor assembly comprises a magnet sleeve held on a rotor shaft by a rigid adhesive layer that includes at least one axial wedge shape corresponding to an axial irregularity on at least one of the surfaces bonded by the adhesive layer. Improved crush strength in the magnet sleeve and in other bonded metal parts, both initially and after exposure to high temperatures is accomplished by impregnating the parts with a curable resin. | 09-01-2011 |
| 20110304234 | SMALL ELECTRIC MOTOR - In a small electric motor having a stator and a rotor which includes a solid-cylindrical permanent magnet and at least one shaft element mounted on a face of the permanent magnet and bonded thereto by adhesive, the shaft element has at least one recess on its face facing the permanent magnet. The adhesive is introduced into the recess and contacting the face of the permanent magnet in the area of the recess. | 12-15-2011 |
| 20120139377 | INTERIOR PERMANENT MAGNET MOTOR AND MANUFACTURING METHOD FOR THE SAME - An interior permanent magnet motor in provided which is made up of a permanent magnet, and a rotor core of which an insertion aperture for the permanent magnet to be inserted thereinto is formed in the rotor core. Additionally, the interior permanent magnet motor includes a first end plate which is connected to the rotor core and of which a first seating portion for the permanent magnet is disposed thereto is formed in the first seating portion and a second end plate which is connected to the rotor core and of which a second seating portion for the permanent magnet is disposed thereto is formed in the second end plate. | 06-07-2012 |
| 20120139378 | ROTOR AND METHOD OF MANUFACTURING ROTOR - A rotor that can reduce the used amount of resin for securing a permanent magnet is provided. The rotor includes a rotor core provided fixedly to a rotation shaft and having a magnet insertion hole extending in an axial direction formed therein, a permanent magnet embedded in the magnet insertion hole and extending in the axial direction and extending in a direction inclined relative to a radial direction of the rotor core, and a resin layer that secures the permanent magnet to the rotor core. The resin layer covers a surface of the permanent magnet and is in contact with an inner surface of the magnet insertion hole. A hollow space extending in the axial direction is left in the magnet insertion hole at an inner side in the radial direction relative to the permanent magnet. Part of the inner surface of the magnet insertion hole is exposed to the hollow space. | 06-07-2012 |
| 20120223607 | ELECTRIC ROTATING MACHINE - A rotor includes a rotor core and permanent magnets each of which is received in a corresponding slot of the rotor core with its magnetization direction being oblique to a radial direction of the rotor core. Each of the permanent magnets has a first corner portion positioned radially outermost and a second corner portion positioned radially innermost. For each of the permanent magnets, there are formed first and second gaps respectively between the first corner portion and the inner surface of the corresponding slot and between the second corner portion and the inner surface of the corresponding slot in a reference direction of the permanent magnet. The rotor core also has, for each of the permanent magnets, supporting portions each of which abuts and thereby supports, in the reference direction, a predetermined portion of the permanent magnet which is positioned away from both the first and second corner portions. | 09-06-2012 |
| 20120313474 | ROTOR OF ROTARY ELECTRIC MACHINE - A rotor of a rotary electric machine according to the present invention includes: a rotor core arranged on the outer circumferential side of a rotor shaft; and a plurality of magnetic poles fixed to the rotor core and circumferentially arranged on the rotor core, the rotor including a non-magnetic ring attached by insertion to the outer circumference of the plurality of the magnetic poles and having a substantially polygonal shape in outer circumferential shape. The non-magnetic ring is configured such that the inner circumferential length L of the non-magnetic ring before assembly with respect to the length of an envelope L | 12-13-2012 |
| 20120326549 | FIXING A PERMANENT MAGNET IN A DRIVING MOTOR ROTOR - A method of fixing a permanent magnet in a rotor of a driving motor, e.g., for a vehicle, includes inserting the permanent magnet into a core of the rotor and fixing the permanent magnet by supplying resin to the permanent magnet, wherein a coefficient of thermal expansion of the resin is substantially equal to that of the rotor core. | 12-27-2012 |
| 20130099617 | ELECTRIC MACHINE WITH MAGNET HOLDER - An electric machine having a rotor with an axially extending magnet slot. A magnetic material is mounted in a magnet holder to form a magnet holder assembly which is installed in the magnet slot of the rotor. In some embodiments, the magnet holder assembly substantially fills the entire slot volume. In other embodiments, the magnet holder assembly defines a greater thickness of dielectric material between the magnetic material and the major side of the slot nearest the stator than between the magnetic material and the opposite side of the slot. In still other embodiments, a plurality of axially abutting magnet holder assemblies are installed in the magnet slot. In yet other embodiments, the magnet holder comprises two materials with different durometer values wherein one of the materials is resiliently, compressibly engaged with the slot to secure the magnet holder assembly therein. A method of manufacture is also disclosed. | 04-25-2013 |
| 20130200740 | PERMANENT MAGNET ROTOR FOR AN ELECTRIC MOTOR - A rotor for an electric motor. A rotor for an electric motor has a main rotor body which includes radial support surfaces. In addition, the rotor has permanent magnet bodies which are arranged radially externally on the radial support surfaces. Associated with each permanent magnet body is a sheet metal holder which at least partially covers the respective permanent magnet body on the side thereof remote from the support surface and which is designed and arranged such that it secures this permanent magnet body in the radial direction. | 08-08-2013 |
| 20130229083 | Structure for Brushless Motors - An improved structure for brushless motors comprises a stationary part and a rotary or movable part mounted relative to the stationary part. The rotary part includes a frame and a plurality of magnets disposed, one after another, along one surface of the frame and attached to the surface of the frame adjacent to the stationary part, wherein each of the magnets has a curved surface so as to define a series of gaps between the curved surfaces of the magnets and the surface of the frame of the rotary or movable part. With the present invention, the airgap between the stationary part and rotary or movable part would be more uniform, and the motor can be manufactured more easily. Also, when running the motor, cogging or no-current torque can be reduced or eliminated, so that the motor can be operated more smoothly. | 09-05-2013 |
| 20130241338 | ROTOR WITH PERMANENT EXCITATION, ELECTRIC MACHINE HAVING SUCH A ROTOR AND MANUFACTURING METHOD FOR THE ROTOR - A rotor includes a shaft, a plurality of permanent magnets arranged around the shaft in a circumferential direction for permanent excitation and attached to the shaft by an adhesive bond, and a flux conducting device provided for conducting a magnetic flux of the permanent magnets. The flux conducting device has a plurality of soft-magnetic flux conducting elements. Each flux conducting element is placed between two of the permanent magnets and adhesively bonded thereto. | 09-19-2013 |
| 20130328433 | BONDED-MAGNET ROTOR, METHOD OF MANUFACTURING THEREOF, AND MOTOR PROVIDED THEREWITH - A method of manufacturing a bonded-magnet rotor according to the invention includes forming step and arranging step. The forming step is by forming a bonded-magnet formed body. The arranging step includes: integrating an inside-diameter holding jig, a rotor core, and a rotor-core presser jig; arranging the bonded-magnet formed bodies on the outside periphery of the inside-diameter holding jig; and arranging an outside-diameter-holding magnet-pressure-welding jig to support outside peripheral faces of the bonded-magnet formed bodies. The method further includes steps of: deforming the bonded-magnet formed bodies to fit with the outside peripheral dimension of the rotor core by pressing and transferring the bonded-magnet formed bodies to the rotor core with a forming jig; mutually joining end portions of adjacent ones of the bonded-magnet formed bodies; and integrating the bonded-magnet formed bodies with the rotor core by compressing the bonded-magnet formed bodies. This configuration allows the bonded-magnet rotor with high dimension accuracy. | 12-12-2013 |
| 20140042856 | PERMANENT MAGNET TYPE MOTOR AND METHOD FOR MANUFACTURING PERMANENT MAGNET TYPE MOTOR - A permanent magnet type motor of high quality is achieved which is capable of lowering the manufacturing irregularity of the rotor. | 02-13-2014 |
| 20140042857 | ROTOR OF A PERMANENTLY EXCITED SYNCHRONOUS MACHINE - A rotor of a permanently excited synchronous machine includes a shaft capable of rotating about an axis and a laminated core having an axial layering arrangement defined by planes which are aligned perpendicular to the axis. The laminated core has at least two layers of different geometry. A first layer has a plate with a closed outer contour at least at an outer periphery, and a second layer has plural plate segments. The first and second layers of the laminated core are arranged in an axial direction to form axial pockets in interspaces between the plate segments of the second layer and recesses formed radially within the outer contour of the first layer for receiving permanent magnets. An adhesive is provided in radial gaps formed at least in axial sections of the second layer between adjacent plate segments and the permanent magnets. | 02-13-2014 |
| 20140070654 | PERMANENT MAGNET ELECTRIC MACHINE HAVING MAGNETS PROVIDED WITH A THERMAL ENHANCEMENT BONDING COATING - A rotor assembly for a permanent magnet electric machine includes a plurality of rotor laminations joined to form a rotor body. Each of the plurality of rotor laminations includes a plurality of slots. One or more permanent magnets are mounted within respective ones of the plurality of slots. Each of the one or more permanent magnets includes a thermal enhancement bonding coating. A method of forming a rotor assembly is also disclosed. | 03-13-2014 |
| 20140077651 | PERMANENT MAGNET ROTOR ARRANGEMENT - A permanent magnet rotor arrangement includes a rotor and a plurality of nonmagnetic, axially extending profiled tubes defining a closed channel and affixed circumferentially along the outer rim of the rotor. A plurality of permanent magnet pole pieces are arranged in the channels. A single pole piece is arranged in each channel. The cross-sectional profile of the pole piece does not correspond to the cross-sectional profile of the channel. | 03-20-2014 |
| 20140077652 | ROTOR FOR ROTATING ELECTRICAL MACHINE, ROTATING ELECTRIC MACHINE, AND METHOD FOR PRODUCING ROTOR FOR ROTATING ELECTRICAL MACHINE - Provided is a rotor for a rotating electrical machine which is capable of minimizing increases in eddy current losses via a magnet, while making insulating film processing of the surface of the magnet unnecessary. The rotor for the rotating electrical machine includes: a rotor core having a magnet insertion hole extending inside; a magnet inserted in the magnet insertion hole; and an insulating filler which is filled between the inner wall of the magnet insertion hole and the magnet so as to secure the magnet. The magnet is secured by the filler in such a manner that the surface of the magnet inside the magnet insertion hole is in an inclined position with respect to the extending direction of the inner wall of the magnet insertion hole. | 03-20-2014 |
| 20140184007 | ROTOR FOR AN ELECTRICAL MACHINE - A rotor that includes a rotor core assembly secured to a shaft. The rotor core assembly includes a magnet and an end cap secured to an end of the magnet. Each of the magnet and the end cap has a bore into which the shaft extends. The end cap forms an interference fit with the shaft. The magnet forms a clearance fit with the shaft and an adhesive is located in the clearance between the magnet and the shaft. Additionally, a method of manufacturing the rotor. The method includes inserting the shaft into the bore of the end cap. An adhesive is then introduced into the bore of the magnet and the shaft is inserted into the bore of the magnet so as to cause adhesive to be drawn into the clearance defined between the magnet and the shaft. | 07-03-2014 |
| 20140265699 | ROTOR FOR ROTARY ELECTRIC MACHINE AND MOTOR FOR ELECTRIC POWER STEERING - The hole diameter of a shaft through hole formed in the rotor core is changed in the axial direction, thereby forming a concave portion whose hole diameter is large and a convex portion whose hole diameter is small in the inner circumferential surface of the shaft through hole; the convex portion is arranged at opening portions on both ends of the shaft through hole; a shaft having ridge-shaped convex portions on a press-fitting portion is press-fitted into the shaft through hole to assemble; the number of points of the concave portion is equal to or more than two; and respective diameter dimensions of the concave portion, the convex portion, and the shaft are set to be the diameter of a main body of the shaft| 09-18-2014 | |
| 20140306569 | ROTATING ELECTRICAL MACHINE AND MANUFACTURING METHOD OF ROTOR - A rotating electrical machine comprises a stator and a rotor. The rotor includes a rotor iron core in which a permanent magnet is disposed. The rotor iron core comprises a connection part, a plurality of magnetic pole part, a first gap, and a second gap for injection of the adhesive. The connection part is configured to surround a rotational axis. The plurality of magnetic pole parts are provided in an outer portion than the connection part in a radial direction. The first gap is configured to penetrate along an axial direction between the magnetic pole parts in an outer portion than the connection part in the radial direction and in which the permanent magnet is fixed with adhesive. At least one of the second gaps is provided for each of the first gaps in communication with the first gap. | 10-16-2014 |
| 20150061445 | ROTOR HAVING PERMANENT MAGNET AND METHOD OF MANUFACTURING THE SAME - A rotor having permanent magnets | 03-05-2015 |
| 20150091404 | ROTOR FOR ROTATING ELECTRIC MACHINE, ROTATING ELECTRIC MACHINE, AND MAGNETIZING APPARATUS FOR ROTATING ELECTRIC MACHINE - A rotor for a rotating electric machine includes a rotor core including a plurality of laminated steel plates; a permanent magnet fixed to an outer peripheral surface of the rotor core, the permanent magnet having a length in an axial direction less than that of the rotor core; and an adhesive member disposed on a region of the outer peripheral surface of the rotor core between an end of the permanent magnet in the axial direction and an end of the rotor core in the axial direction. | 04-02-2015 |
| 20150130318 | RESIN COMPOSITION FOR ROTOR FIXING, ROTOR, AND AUTOMOTIVE VEHICLE - A rotor-fixing resin composition of the present invention comprising: an epoxy resin-containing thermosetting resin; a curing agent; and an inorganic filler, wherein a tensile elongation at break-a is 0.1% or higher and 1.7% or lower, the tensile elongation at break-a is obtained by subjecting a test piece to a tensile test pursuant to JIS K7162 under conditions of a temperature of 120° C., a test force of 20 MPa and 100 hours, and the test piece is a cured product produced by subjecting the rotor-fixing resin composition to curing by heating at 175° C. for 4 hours, and molding to a dumbbell shape pursuant to JIS K7162. | 05-14-2015 |
| 20150318747 | ROTOR AND BRUSHLESS MOTOR - A rotor includes: a rotor core; a plurality of magnets; and an adhesive that adhesively bonds the magnet to the rotor core. The magnets are housed in the magnet holders such that the same magnetic poles of adjacent magnets face each other in a circumferential direction of the rotor core. The adhesive includes: a first adhesive part that adhesively bonds two interior surfaces of the magnet holder facing the circumferential direction to the magnet and that reaches one of ends of the magnet in a direction of axis of the magnet; and a second adhesive part that adhesively bonds, on a side of one of end surfaces of the rotor core in a direction of axis of the rotor core, said end surface of the rotor core to an end surface of the magnet in an axial direction of the magnet and that is connected to the first adhesive part. | 11-05-2015 |
| 20160049836 | EMBEDDED MAGNET ROTOR FOR ROTARY ELECTRIC MACHINE - In an embedded magnet rotor for a rotary electric machine, permanent magnets are respectively accommodated in magnet housing apertures that pass axially through a rotor core that is held by a shaft, an adhesive is injected into and cured in gaps between the permanent magnets and the rotor core in the magnet housing apertures, and fixes the permanent magnets to the rotor core, a first end plate is held by the shaft so as to contact a first axial end of the rotor core, and blocks first axial end openings of the plurality of magnet housing apertures, and a fill rate of the adhesive that is injected into the gaps is increased gradually from a first axial end toward a second axial end of the magnet housing apertures. | 02-18-2016 |
| 20160072348 | PERMANENT MAGNET EMBEDDED-TYPE ROTATING ELECTRIC MACHINE AND MANUFACTURING METHOD THEREOF - Cracking and flying around of permanent magnets in a permanent magnet embedded-type rotating electric machine is prevented. Thermally hardening FRP is used as a reinforcement sheet, and the reinforcement sheet is wrapped around the periphery of a permanent magnet and caused to adhere to the surface of the permanent magnet by being thermally hardened. Subsequently, the permanent magnet to which the reinforcement sheet is adhering is embedded in magnet embedding holes of the rotor. The surface of the reinforcement sheet after thermal hardening is in a state of not being attached to the inner wall surface of the magnet embedding holes. Consequently, no stress caused by the difference between the linear expansion coefficients of the rotor and permanent magnets acts on the permanent magnets when the temperature of the rotor rises, and cracking of the permanent magnets can thus be prevented. | 03-10-2016 |
| 20160197527 | MOTOR | 07-07-2016 |
| 20160204666 | ROTOR FOR ROTARY ELECTRIC MACHINE | 07-14-2016 |
| 20160380493 | ROTOR - A rotor includes: a rotor core; magnets disposed in housing holes having openings in end faces of the rotor core; a filler injected through the openings into the housing holes; and end plates fixed to the end faces. The end plates have recesses at positions facing inlets of the filler. | 12-29-2016 |
