| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 310156160 | Spring mounted | 14 |
| 20090001838 | Rotating Electrical Machine - There is provided a rotating electrical machine capable of suppressing backlash of a magnet in the trust direction and suppressing an axial variation in the fitting position of the magnet. A magnet holder | 01-01-2009 |
| 20090001839 | Rotating Electrical Machine - There is provided a rotating electrical machine capable of suppressing backlash of a magnet in the radial direction and suppressing an axial variation in the fitting position of the magnet. A magnet holder | 01-01-2009 |
| 20090079285 | Alternator with rotor for vehicle - An alternator has a rotor rotated on its own axis to generate electric power in a stator. The rotor has pole cores with claw portions arranged along the circumferential direction, and a holder unit is disposed between two adjacent claw portions in each pair. Each holder unit has a magnet accommodating holder and a magnet covering holder. Each holder has one bottom wall, four side walls and one opening. The magnet accommodating holder accommodates a magnet. The magnet covering holder is placed between the claw portions and accommodates the magnet accommodating holder while covering the magnet exposed to the opening of the magnet accommodating holder. The magnet accommodating holder has convex portions existing in the respective side and bottom walls and being in elastic contact with the magnet. | 03-26-2009 |
| 20090108694 | ROTOR AND PUMP - A rotor for being used in a motor is provided with a shaft, a yoke attached to the shaft, a magnet attached to the yoke, and an elastic member attached to at least one of the shaft and the yoke. The elastic member forces the magnet towards the yoke along an axial direction of the shaft. | 04-30-2009 |
| 20090230801 | MOTOR AND METHOD FOR MANUFACTURING ROTOR UNIT OF THE MOTOR - In a rotor unit of a motor, field magnets are inserted into respective magnet holding holes of a rotor core. End plates are arranged on the upper and lower end surfaces of the rotor core to cover the magnets holding holes. Each of the end plates preferably has three bent portions extending perpendicular or substantially perpendicular to the radial direction, the three bent portions being arranged circumferentially. The bent portions are preferably formed through press working such that they are protruded toward the rotor core. The rotor core includes end plate fixing holes. End plates are preferably fixed to the rotor core by press-fitting the bent portions into the respective end plate fixing holes while allowing side surfaces of the bent portions to make contact with inner surfaces of the end plate fixing holes. Accordingly, the end plates can easily be fixed to the rotor core without increasing the axial size of the rotor unit. | 09-17-2009 |
| 20100026125 | Magneto field type motor and a method of manufacturing it - When the magnet holding spring is in the deployed state of the plate-like shape, the auxiliary pole is beforehand fixed to one of the side-plates, then the magnet holding spring is bent into a “]”-like sectional shape. As a result, the magnet holding spring and the auxiliary pole that are assembled integrally constitute the sub-assy. Convex parts are formed on the auxiliary pole. The auxiliary pole is fixed to one of the side-plates by press fitting the convex parts to the fitting holes formed on one of the side-plates. The auxiliary pole is laid on one of the side-plates in the direction of a plate thickness for positioning before forming the convex parts on the auxiliary pole. In the positioned state here, by embossing the auxiliary pole, the convex parts are formed on the auxiliary pole, and at the same time, the convex parts are press fit into the fitting holes thus the auxiliary pole is fixed to one of the side-plates. | 02-04-2010 |
| 20100176678 | ELECTRIC MOTOR - An electric motor includes a stator and a rotor. The stator has a housing and a single ceramic permanent magnet disposed in the housing. The magnet has a C-shaped cross section. During assembly the magnet is resiliently deformed to allow the magnet to be inserted into the housing. The inner diameter of the housing is less than the outer diameter of the magnet in its relaxed state such that once inserted in the housing the magnet is kept resiliently deformed by the housing. The magnet thus generates a radial force acting on the inner surface of the housing which results in the magnet being firmly retained in the housing. A slot is formed between opposing circumferential ends of the magnet. The slot extends from one axial end of the magnet to the other axial end. Preferably, a spacer is pressed into the slot and an interlock structure is arranged between the spacer and the housing to prevent the magnet from moving relative to the housing. | 07-15-2010 |
| 20110298325 | ELECTRIC MOTOR - A novel electric motor rotor structure, particularly desirable for use with brittle rare-earth-magnets, offers improved resistance to rattling and axial shifting. This is achieved by forming the rotor with an annular central yoke connecting to a plurality of pole shoes along the periphery of the rotor and defining a magnet-receiving recess or pocket | 12-08-2011 |
| 20120032548 | DEVICE FOR FIXING MAGNETS - The invention relates to an electric machine ( | 02-09-2012 |
| 20130026873 | PERMANENT MAGNET ROTORS AND METHODS OF ASSEMBLING THE SAME - A permanent magnet rotor is described. The permanent magnet rotor includes at least one permanent magnet and a rotor core including a first end and a second end. The rotor core includes at least one inner wall that defines a permanent magnet opening configured to receive the at least one permanent magnet. The rotor core further includes at least one permanent magnet retention feature extending substantially radially from the at least one inner wall and configured to maintain a position of the at least one permanent magnet with respect to the at least one permanent magnet opening. | 01-31-2013 |
| 20130038163 | ROTOR CORE OF MOTOR - Provided is a rotor core of a motor, the rotor core, the rotor core including: a thin disk-shaped rotor core member; a shaft hole penetratively formed at a center of the rotor core member; a shaft press-fitted into the shaft hole; a plurality of magnet insertion holes penetratively formed at a position near to a periphery of the rotor core member for inserted coupling by a magnet; and a magnet support rotor core member in which a magnet support member tightly contacting a magnet inserted into the magnet insertion hole to a radial direction of the rotor core member is protrusively formed at the magnet insertion hole, wherein the rotor core members are stacked each at a predetermined height, and the magnet support rotor core members are arranged at an upper surface and a bottom surface of the plurality of stacked rotor core members, and the shaft is press-fitted into the shaft hole. | 02-14-2013 |
| 20130099616 | HOLDING MEANS FOR ELECTRICAL MACHINES - A holding element ( | 04-25-2013 |
| 20150357872 | PERMANENT MAGNET ROTOR FOR AN ELECTRINICALLY COMMUTATED DC MOTOR - In a DC motor, a permanent magnet rotor comprising a shaft, a rotor sheet packet supported by the shaft, which rotor sheet packet comprises close to the periphery thereof completely closed and tangentially extending rectangular recesses for receiving planar permanent magnet plates. At least one permanent magnet plate is accommodated in each recess, the permanent magnet plates are held by spring elements free of play by force locking, the recesses have free spaces connected to the permanent magnet plates in the tangential direction, which free spaces extend across the major part of the side surfaces of the permanent magnet plates and the rotor sheet packet consists essentially of a radial outer annular region and a radial inner core region, wherein the annular region in a large part is delimited by the recesses and the free spaces and is integral with the core region via thin radial webs. | 12-10-2015 |
| 20160020654 | LAMINATED ROTOR CORE OF A ROTATING ELECTRIC MACHINE - A laminated rotor core of a rotating electric machine includes a base body having a tubular shape with a number of axial rotor segments which project radially outwards. A block magnet is connected by a form fit to the base body, and an individual segment is connected by a form fit to the block magnet and arranged between two of such block magnets which are disposed between two neighboring ones of the rotor segments. The individual segment has a surface which faces the block magnet and includes an individual segment spring element upon which the block magnet rests. The individual segment spring element is configured as an axial contact lug which extends in parallel relationship to a slot of the individual segment in an edge area in which the contact lug is disposed. | 01-21-2016 |
