Patent application number | Description | Published |
20100067952 | IMAGE FORMING APPARATUS - An image forming apparatus includes a toner image carrying member, an image transfer device, a fixing device, a registration unit, a guide member, an upstream-side transportation unit, and a downstream-side transportation unit. The image transfer device transfers a toner image from the toner image carrying member to a recording medium. The fixing device fixes the toner image. The registration unit transports the recording medium. The guide member guides the recording medium. The upstream-side transportation unit includes an upstream-side transportation member, disposed at an upstream side in the transport direction of the recording medium. The downstream-side transportation unit includes the downstream-side transportation member, disposed at a downstream side in the transport direction of the recording medium. The upstream-side transportation unit includes an upstream-side positioning member to position the guide member to the upstream-side transportation member. The downstream-side transportation unit includes a downstream-side positioning member to position the guide member to the downstream-side transportation member. | 03-18-2010 |
20100080625 | IMAGE FORMING APPARATUS WITH IMPROVED HOUSING PANEL STRUCTURAL STRENGTH - In an image forming apparatus, a moving member is provided with a first engagement member. A lever is provided with a second engagement member to engage and disengage the first engagement member provided in the moving member. The lever moves between a predetermined first position and a second position different from the first position to move the moving member in such a manner that when the lever is at the first position, a transfer member reaches a contact position at which the transfer member is pressed against an image carrier via a belt, and when the lever is at the second position, the transfer member reaches a separation position at which the transfer member separates from the image carrier. | 04-01-2010 |
Patent application number | Description | Published |
20090257799 | POWDER CONTAINER, CLEANING DEVICE, AND IMAGE FORMING APPARATUS - A powder container includes a first container to contain powder falling from an opening located in an upper portion of the powder container, a second container that contains the powder and is located in the first container, on a route through which the powder that falls from the opening, a powder transport mechanism to transport the powder from the first container to the second container, and a detection mechanism to detect whether or not the first container is completely or nearly filled with the powder based on a load to the powder transport mechanism. | 10-15-2009 |
20100003051 | TRANSFER UNIT AND IMAGE FORMING APPARATUS - A turnable transfer unit, including a transfer member forming a transfer nip while contacting an image bearer installed in an image forming apparatus; and a pressurizer pressurizing the transfer member to the image bearer, wherein the turnable transfer unit further includes a turnable lever member, including an engaging part engaging with a positioning part of the image forming apparatus; and a contact part contacting an opening and closing body openable and closable in the image forming apparatus, wherein the lever member turns in conjunction with a closing operation of the opening and closing body to position the transfer unit in the image forming apparatus. | 01-07-2010 |
20100008696 | TRANSFER UNIT AND IMAGE FORMING APPARATUS EMPLOYING THE TRANSFER UNIT - A transfer unit includes a belt member, a bending roller, a transfer section, and a bias application unit. The belt member is extended between rollers and has a movable surface on which a toner image is transferred from an image carrier. The bending roller externally contacts the surface of the belt member to bend the belt member and rotates in conjunction with the belt member. The transfer section includes one of the rollers and a surface moving member. The surface moving member rotates at least one full turn while cleaning is performed on the surface moving member and the bending roller. A surface moving speed of the bending roller is equal to or greater than a surface moving speed of the surface moving member. A circumferential length L1 of the surface moving member and a circumferential length L2 of the bending roller satisfy L1≧L2. | 01-14-2010 |
20140270863 | TRANSFER UNIT AND IMAGE FORMING APPARATUS EMPLOYING THE TRANSFER UNIT - An image forming apparatus includes a plurality of image carriers that carries toner images, a belt that is supported by a plurality of rollers including a support roller and an opposing roller, a transfer roller disposed opposed to the opposing roller via the belt, and a bending roller that bends the belt from outside toward inside and is disposed downstream from the opposing roller and upstream from support roller. The belt is stretched between the support roller and the bending roller in a first area. The plurality of image carriers contacts the belt in a second area other than the first area. A surface of the belt in the first area is parallel to that of the belt in the second area. | 09-18-2014 |
Patent application number | Description | Published |
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 |
20090045689 | ROTOR AND METHOD OF MANUFACTURING THE SAME AND ELECTRIC VEHICLE - A rotor includes: a rotor core fixedly attached to a rotational shaft and having a magnet-inserted hole portion; a magnet inserted into the magnet-inserted hole portion; and a resin portion injected into the magnet-inserted hole portion. The rotor core is constructed by axially stacking a plurality of electromagnetic steel sheets. The electromagnetic steel sheets include: an electromagnetic steel sheet having the magnet-inserted hole portion and a weight-reducing-purpose hole portion provided separately from the magnet-inserted hole portion; and an electromagnetic steel sheet located on at least one axial end of the rotor core and having a portion covering the hole portion formed in the electromagnetic steel sheet. | 02-19-2009 |
20090174273 | Production method of rotor and rotor - The present invention has an object to propose a method of producing a rotor, capable of reliably fixing a magnet to a rotor core with resin and preventing breakage of the rotor core. The present invention includes a step of fixing a permanent magnet to a rotor core by injecting molten resin into a slot by injection molding on the condition that, assuming that: a dimension between an end surface of the rotor core and an end surface of the permanent magnet is a core end surface-magnet interval; and a minimum value of a dimension between an inner surface of the slot and a side surface of the permanent magnet, allowing the molten resin to fully fill a clearance between the inner surface of the slot and the side surface of the permanent magnet by injecting the resin into the slot through a cylinder, is a minimum slot-magnet interval value, and a value of the core end surface-magnet interval is equal to or larger than the minimum slot-magnet interval value. | 07-09-2009 |
20090258755 | POWER OUTPUT APPARATUS, CONTROL METHOD OF POWER OUTPUT APPARATUS, AND VEHICLE EQUIPPED WITH POWER OUTPUT APPARATUS - An object oil temperature is determined by adopting a gradual change process for an oil temperature of a cooling lubricant oil, which is used to lubricate and cool down a motor and a transmission constructed to cause an output power of the motor to be subjected to speed change and to be transmitted to a driveshaft. A load factor of the motor is subsequently set based on the set object oil temperature and a motor coil temperature. A motor torque command is set with the load factor, and the motor is then driven and controlled to ensure output of a torque equivalent to the set motor torque command. This arrangement drives and controls the motor with consideration of the oil temperature of the cooling lubricant oil and thus ensures more adequate actuation of the motor, compared with a conventional drive control without consideration of the oil temperature of the cooling lubricant oil. | 10-15-2009 |
Patent application number | Description | Published |
20110000079 | Rotor Manufacturing Method - An object is to provide a rotor manufacturing method capable of reducing a rotor unbalance amount by controlling a magnet arrangement position in a rotor core and improving work efficiency when fixing a magnet to the rotor core by using resin. A lower surface of a rotor core is arranged in a lower mold. A magnet is arranged in a lower mold. A magnet is contained in each of magnet containing holes formed in the rotor core in such a manner that a predetermined space is assumed between an upper surface of the rotor core and an upper surface of the magnet. An upper mold is arranged on the upper surface of the rotor core. The upper mold and the lower mold apply a pressure to the rotor core and a molten resin is supplied with pressure from an internal diameter side via the predetermined space into the plurality of magnet containing holes from respective cylinder arranged in the upper mold. Thus, the magnets are molded by resin while pressing the magnets toward the outer diameter side of the magnet containing holes. | 01-06-2011 |
20120242268 | ROTATING ELECTRICAL-MACHINE CONTROL SYSTEM AND METHOD OF OPERATING MAGNET TEMPERATURE OF ROTATING ELECTRICAL-MACHINE - A rotating electrical-machine control system is provided with: a rotating electrical-machine comprising a rotor further comprising permanent magnets that are divided into a dividing-number of sections; an inverter circuit that drives the rotating electrical-machine by PWM control, using a carrier wave having a carrier frequency; a storage unit that has stored therein a relationship file that indicates the relationship between the dividing-number of the magnets, the magnet temperature, and the carrier frequency; and a control apparatus. The control apparatus comprises a condition acquisition processing unit for acquiring the target magnet temperature, a rotational-speed acquisition processing unit for acquiring the rotational speed of the rotating electrical-machine, and a carrier-frequency setup processing unit for providing the dividing-number of the magnets and the target magnet temperature to the storage unit and conducting a search therein, and giving the corresponding carrier frequency to an inverter control unit as an instruction. | 09-27-2012 |
20120256511 | STATOR - A stator includes a stator core that has at least one tooth which extends radially inward from the stator core and has a shape of a quadrangular prismoid, an insulator that is made of a resin, and a coil that is formed by winding a rectangular wire around the tooth via the insulator. The insulator has a thickness which varies depending on a relative positional relationship between the rectangular wire and the tooth, or the coil is formed in a staircase configuration to conform to the quadrangular prismoid shape of the tooth and the insulator has a varying thickness to conform to the staircase configuration. | 10-11-2012 |
20120285004 | 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. | 11-15-2012 |
20130065405 | SHIELD STRUCTURE OF CONDUCTOR CABLE AND ELECTRICALLY DRIVEN VEHICLE - A shield structure of a conductor cable includes a first case that accommodates a rotating electrical machine, a first terminal block that is provided on the first case, a second case that accommodates an inverter, a second terminal block that is provided on the second case, a conductor cable that electrically connects the first terminal block and the second terminal block to each other, and a metal shell that is arranged across the first case and the second case and covers at least part of a periphery of the conductor cable. | 03-14-2013 |
20130097852 | METHOD OF MANUFACTURING STATOR OF ROTATING ELECTRICAL MACHINE - A method of manufacturing a stator of a rotating electrical machine includes: winding coils of a plurality of phases respectively around corresponding teeth; fixing the coils by supplying direct currents to the coils such that Lorentz forces are generated toward a radially outer side of the stator; and connecting neutral points of the coils to one another. | 04-25-2013 |
20140217858 | DYNAMO-ELECTRIC MACHINE - A structure which enables highly accurate detection of the temperature of the stator windings of a dynamo-electric machine. A terminal base (12) integrated with a stator by resin molding is provided with: positioning sections (13, 14, 15) for three-phase stator windings (100, 101, 102); and a positioning section (16) for a thermistor (17). The positioning section (16) is disposed between the positioning sections (14, 15). The thermistor (17) is insert molded on the terminal base (12). | 08-07-2014 |