Patent application number | Description | Published |
20110094445 | APPARATUS FOR MANUFACTURING THIN-FILM SOLAR CELL - An apparatus for manufacturing a thin film solar cell of the present invention includes a film forming chamber in which a film is formed on a film formation face of a substrate using a CVD method; an electrode unit including a cathode unit having cathodes to which voltages are to be applied arranged on both sides thereof, and a pair of anodes each of which is arranged to face a different one of the cathodes, at a separation distance therefrom; a mask for covering a peripheral edge portion of the substrate; and a discharge duct installed around the cathode unit. A film formation space is formed between the cathode unit and the substrate installed on the side of the anode, an evacuation passage is formed between the mask and the cathode unit, the discharge duct and the film formation space are connected together via the evacuation passage, and a film forming gas introduced into the film formation space is evacuated from the discharge duct through the evacuation passage. | 04-28-2011 |
20110094446 | THIN-FILM SOLAR CELL MANUFACTURING APPARATUS - A thin-film solar cell manufacturing apparatus, includes: a film formation space in which a substrate is disposed so that a film formation face of the substrate is substantially parallel to a direction of gravitational force, and in which a desired film is formed on the film formation face by a CVD method; a cathode unit including cathodes to which a voltage is applied, and two or more power feeding points, the cathodes being disposed at both sides of the cathode unit; and an anode distantly disposed so as to face the cathodes that are disposed at both sides of the cathode unit. | 04-28-2011 |
20110100296 | FILM FORMATION APPARATUS - A film formation apparatus includes: a film forming chamber in which a desired film is formed on a substrate in a vacuum; a loading-ejecting chamber fixed to the film forming chamber with a first opening-closing section interposed therebetween, being capable of reducing a pressure inside the loading-ejecting chamber so as to form a vacuum atmosphere; a second opening-closing section provided at a face opposite to the face of the loading-ejecting chamber on which the first opening-closing section is provided; and a carrier holding the substrate so that a film formation face of the substrate is substantially parallel to a direction of gravitational force, wherein the carrier or the substrate passes through the second opening-closing section, and is transported to the loading-ejecting chamber and is transported from the loading-ejecting chamber; a plurality of carriers is disposed in the loading-ejecting chamber in parallel to each other; the plurality of carriers is transported in parallel between the loading-ejecting chamber and the film forming chamber; and a film is simultaneously formed on a plurality of substrates that is held by the plurality of carriers in the film forming chamber. | 05-05-2011 |
20110100297 | THIN-FILM SOLAR CELL MANUFACTURING APPARATUS - A thin-film solar cell manufacturing apparatus includes a film forming chamber that is evacuated to a reduced pressure and forms a film on a substrate using a CVD method; a loading-ejecting chamber that is connected to the film forming chamber via a first opening-closing part and that is switchable between atmospheric pressure and reduced pressure; transfer rail that is laid at the film forming chamber and the loading-ejecting chamber; a carrier that holds the substrate and moves along the transfer rail; and a carrier transfer mechanism that transfers the carrier, wherein, the carrier transfer mechanism is provided in the loading-ejecting chamber to transfer the carrier between the film forming chamber and the loading-ejecting chamber. | 05-05-2011 |
20110107969 | APPARATUS FOR MANUFACTURING THIN-FILM SOLAR CELL - An apparatus for manufacturing a thin film solar cell of the present invention has a film forming chamber in which a substrate is arranged so that the film formation face of the substrate is substantially parallel to the direction of gravitational force and a film is formed on the film formation face by a CVD method; an electrode unit including a cathode unit having cathodes to which voltages are to be applied arranged on both sides thereof, and a pair of anodes each of which is arranged to face the cathodes, respectively, at a separation distance therefrom; and a conveying part which supports the substrate and conveys the substrate to between the cathode and the anode facing the cathode. The separation distance is variable. | 05-12-2011 |
20110120370 | THIN-FILM SOLAR CELL MANUFACTURING APPARATUS - A thin-film solar cell manufacturing apparatus includes a film forming chamber which stores a substrate; and an electrode unit which performs film formation using a CVD method on the substrate in the film forming chamber. The electrode unit has an anode and a cathode; and a side wall portion which holds the anode and the cathode and forms a part of a wall portion of the film forming chamber, and is attachable to and detachable from the film forming chamber. | 05-26-2011 |
20110189384 | THIN-FILM SOLAR CELL MANUFACTURING APPARATUS - A thin-film solar cell manufacturing apparatus includes a film forming chamber that is evacuated to a reduced pressure and forms a film on a substrate using a CVD method; a loading-ejecting chamber that is connected to the film forming chamber via a first opening-closing part and that is switchable between atmospheric pressure and reduced pressure; a first carrier that holds a pre-processed substrate; and a second carrier that holds a post-processed substrate, wherein the loading-ejecting chamber simultaneously stores the first carrier and the second carrier. | 08-04-2011 |
20120015473 | PHOTOELECTRIC CONVERSION DEVICE MANUFACTURING METHOD, PHOTOELECTRIC CONVERSION DEVICE, PHOTOELECTRIC CONVERSION DEVICE MANUFACTURING SYSTEM, AND METHOD FOR USING PHOTOELECTRIC CONVERSION DEVICE MANUFACTURING SYSTEM - A photoelectric conversion device manufacturing method manufactures a photoelectric conversion device in which a first photoelectric conversion unit and a second photoelectric conversion unit are sequentially stacked on a transparent-electroconductive film formed on a substrate. The method includes: forming each of a first p-type semiconductor layer, a first i-type semiconductor layer, a first n-type semiconductor layer, and a second p-type semiconductor layer in a plurality of first plasma CVD reaction chambers; exposing the second p-type semiconductor layer to an air atmosphere; supplying a gas including p-type impurities to inside a second plasma CVD reaction chamber before forming of the second i-type semiconductor layer; forming the second i-type semiconductor layer on the second p-type semiconductor layer that was exposed to an air atmosphere, in the second plasma CVD reaction chamber; and forming the second n-type semiconductor layer on the second i-type semiconductor layer. | 01-19-2012 |
20120034731 | PHOTOELECTRIC CONVERSION DEVICE MANUFACTURING SYSTEM AND PHOTOELECTRIC CONVERSION DEVICE MANUFACTURING METHOD - A photoelectric conversion device manufacturing system in which a photoelectric conversion device is manufactured, the photoelectric conversion device including a p-type semiconductor layer, an i-type semiconductor layer, and an n-type semiconductor layer which are sequentially layered on a transparent-electroconductive film formed on a substrate in the photoelectric conversion device. The system includes: an i-layer-formation reaction chamber comprising at least a first film formation section, a second film formation section, and a third film formation section, the i-layer-formation reaction chamber forming the i-type semiconductor layer, the first film formation section, the second film formation section, and the third film formation section being sequentially arranged along a transfer direction in which the substrate is transferred; and a plurality of door valves separating the first film formation section, the second film formation section, and the third film formation section so that the length of the second film formation section is greater than the lengths of the first film formation section and the third film formation section in the transfer direction. | 02-09-2012 |
20130199572 | FILM-FORMING APPARATUS, AND METHOD FOR MAINTAINING FILM-FORMING APPARATUS - Ignition sections are provided at two locations on each of lower portions of the side surfaces on both sides of a film-forming chamber so as to be provided at four locations in total. A flowing current is applied to the ignition sections when a flammable by-product is ignited. A first detecting section for measuring a pressure in the film-forming chamber is formed on the side surface of the film-forming chamber. A second detecting section is formed at the lower portion of the side surface of the film-forming chamber. A third detecting section for measuring a spatial temperature in the film-forming chamber is formed at an upper portion of the film-forming chamber. | 08-08-2013 |
Patent application number | Description | Published |
20090128081 | ELECTRIC STEERING SYSTEM - An electric steering system is provided with: a steering torque detection unit which detects a steering torque acting on the shaft; a brushless motor which includes a rotor and a stator having multi-phase stator coils, and generates an assisting torque for assisting the steering torque; a current supply switching unit which drives the brushless motor; a rotary angle estimation unit which outputs an estimated rotary angle; a determination unit which determines whether or not the estimated rotary angle is appropriate by comparison with a direction of the steering torque; and a steering control unit which drives the brushless motor in accordance with the estimated rotary angle determined to be appropriate by the determination unit to control generation of the assisting torque. | 05-21-2009 |
20090266179 | MAGNETOSTRICTIVE TORQUE SENSOR AND ELECTRIC POWER STEERING APPARATUS - A magnetostrictive torque sensor includes first and second magnetostrictive films mounted on a pinion shaft and having different magnetic anisotropic properties, a first detecting coil disposed in facing relation to the first magnetostrictive film, a second detecting coil disposed in facing relation to the second magnetostrictive film, a transistor, and a detector for detecting a torque applied to the pinion shaft based on a first detected signal representative of a potential at the junction between the first detecting coil and the second detecting coil. | 10-29-2009 |
20090314573 | Magnetostrictive Torque Sensor and Electric Steering System - A magnetostrictive torque sensor comprising: a magnetostrictive film provided on a ferromagnetic shaft; a bias magnetization device which applies a bias magnetic field to the shaft to magnetize the shaft; and a detection device which detects a change in magnetism of the magnetostrictive film, wherein: a torque acting on the shaft calculated based on the detection results of the detection device; and the bias magnetization device applies a bias magnetic field to the shaft at a predetermined timing. | 12-24-2009 |
20100263457 | MAGNETOSTRICTIVE TORQUE SENSOR AND METHOD OF MANUFACTURING SAME - A magnetostrictive torque sensor includes a single magnetostrictive film disposed on a steering shaft, and first and second coils for detecting changes in a magnetic property of the magnetostrictive film. The single magnetostrictive film includes a first anisotropic region and a second anisotropic region, having respective magnetic anisotropies inverse to each other. The first coil is disposed in confronting relation to the first anisotropic region, whereas the second coil is disposed in confronting relation to the second anisotropic region. | 10-21-2010 |
20100263962 | MAGNETOSTRICTIVE TORQUE SENSOR AND ELECTRIC POWER STEERING APPARATUS - A magnetostrictive torque sensor includes a rotatable shaft rotatably supported by bearings, a magnetostrictive film disposed on the surface of the rotatable shaft, and a detecting coil that detects a change in a magnetic property of the magnetostrictive film. A hollow cylindrical ring is press-fitted over and fixed to the rotatable shaft near the magnetostrictive film, for example, near the right end of the magnetostrictive film. | 10-21-2010 |
20110035114 | MOTOR CONTROL DEVICE AND ELECTRIC STEERING SYSTEM - A motor control device includes: a rotation angle detection portion that detects a rotation angle of a motor and outputs a rotation angle signal; an abnormal condition detection portion that detects the presence or absence of an abnormal condition of the rotation angle detection portion; a rotation angle estimation portion that estimates the rotation angle of the motor and outputs an estimate rotation angle signal; and a driving control portion that controls driving of the motor on the basis of the rotation angle signal, which is output from the rotation angle detection portion, when the abnormal condition detection portion does not detect an abnormal condition of the rotation angle detection portion, and controls driving of the motor on the basis of the estimate rotation angle signal, which is output from the rotation angle estimation portion, when the abnormal condition detection portion detects an abnormal condition of the rotation angle detection portion. | 02-10-2011 |
20120199414 | ELECTRIC POWER STEERING APPARATUS - An electric power steering apparatus includes a motor control unit for controlling an electric motor operatively connected to a steering shaft. The motor control unit includes a first control unit for controlling a steering torque detected by a torque detecting unit so as to bring the steering torque to zero or to a first predetermined value, and a second control unit for controlling the steering torque detected by the torque detecting unit so as to bring the steering torque to a second predetermined value which is greater than zero or than the first predetermined value, based on an operational quantity detected by an operational-quantity detecting unit or a quantity representative of a vehicle behavior detected by a vehicle-behavior detecting unit. The motor control unit controls the electric motor based on an output signal from the first control unit and an output signal from the second control unit. | 08-09-2012 |
20120232759 | ELECTRIC POWER STEERING DEVICE - An electric power steering device wherein mechanical friction is electrically provided. A steering torque value is detected by a steering torque sensor according to the operation of a steering wheel. An assist current value is calculated by an assist control section on the basis of the steering torque value. A target current value based on the assist current value is determined. For providing friction to the operation of the steering wheel, a friction control section and a friction torque value/current value conversion section generate a corrected steering torque value. A second corrected target current value is created by correcting a first corrected target current value by a friction current value. The corrected steering torque value is obtained by correcting the steering torque value by a friction torque value. The target current value is generated, resulting in a motor being subjected to driving control. | 09-13-2012 |
20120271513 | ELECTRIC POWER STEERING APPARATUS - In the event of a failure of a first electric motor drive signal generator, e.g., the microcomputer, which generates a first electric motor drive signal for performing a feedback control, a second electric motor drive signal generator, e.g., a PWM signal generator, which is made up of discrete circuit components, directly converts a steering torque signal into a second electric motor drive signal. An electric motor, which generates the assistive steering force, is driven by the second electric motor drive signal. | 10-25-2012 |
20120273293 | ELECTRIC POWER STEERING APPARATUS - As a quotient, which is produced when the value of an assistive current for causing an electric motor to generate an assistive torque is divided by the value of a steering torque detected by a steering torque sensor, becomes greater, a greater phase-lag compensation (smaller phase-lead compensation) is performed on the steering torque detected by the steering torque sensor. Within a region in which the steering sensation is reduced, a greater phase-lead compensation is performed. | 11-01-2012 |
20140195122 | ELECTRIC POWER STEERING DEVICE - Provided is an electric power steering device in which the operation feeling is improved without a decrease in commercial value. A phase compensation unit performs a frequency shift on a compensation frequency band compensated by the phase compensation unit. The phase compensation unit performs phase-shift in the compensation frequency band through a frequency shift process, instead of an increase in compensation gain. Therefore, it is possible to minimize occurrences of minute vibrations and abnormal noise in the steering system including the motor that accompany an increase in gain, and to improve the operation feeling and commercial value. | 07-10-2014 |
Patent application number | Description | Published |
20080257635 | Magnetostrictive coat forming method, magnetostrictive torque sensor manufacturing method, and electric power steering apparatus employing the sensor - For forming an annular magnetostrictive coat on an outer peripheral surface of a rotational shaft associated with a magnetostrictive torque sensor, a magnetostrictive-coat forming method comprises a step of fitting a cylindrical masking jig over the outer peripheral surface of the rotational shaft and securing the masking jig to the outer peripheral surface, a step of placing the rotational shaft in a plating tank to thereby form the magnetostrictive coat by plating on the outer peripheral surface, and a step of detaching the masking jig from the rotational shaft. | 10-23-2008 |
20110283521 | Electrically powered steering apparatus - An electrically powered steering apparatus in which at least one torque selected from a steering torque and a motor torque is transmitted from a torque transmission shaft to a rack-and-pinion mechanism to steer steered wheels. The torque transmission shaft has a torque-side shaft provided with a magnetostrictive film of a magnetostrictive sensor for sensing torque; and a pinion shaft provided with a pinion of the rack-and-pinion mechanism. The torque-side shaft and the pinion shaft are separate components which are linked together. | 11-24-2011 |
20120233860 | METHOD OF MANUFACTURING MOTORIZED POWER STEERING DEVICE - Disclosed is a method of manufacturing a motorized power steering device wherein auxiliary torque generated by an electric motor ( | 09-20-2012 |
20140318289 | WORM GEAR MECHANISM - A worm gear mechanism includes a worm connected to an electric motor, and a worm wheel engaged with the worm. In the worm wheel, a tooth flank is formed of a resin material. In the tooth flank, an engagement recess, which is based on a trajectory of a contact point being in contact with a tooth of the worm according to a rotation of the worm, is formed by injection molding, together with the tooth flank, using a mold. The engagement recess includes a plurality of points which are recessed in the direction of a tooth of the tooth flank correspondingly to the trajectory of the contact point with which the most convex portion of the tooth of the worm is in contact. A line connecting the plurality of points interconnects with respect to a tooth width center line of the tooth flank of the worm wheel. | 10-30-2014 |
20140326077 | MAGNETOSTRICTIVE TORQUE SENSOR AND ELECTRIC POWER STEERING DEVICE - A magnetostrictive torque sensor includes first to fourth detection coils each wound around a steering axle (a sensor shaft) so as to surround a magnetostrictive film formed on the sensor shaft and a multi-turn winding bias coil that is separated from the first to fourth detection coils and that is wound around the sensor shaft so as to surround the magnetostrictive film. By applying a DC component current to the bias coil, a sufficient bias magnetic field is applied to the magnetostrictive film so that the hysteresis is prevented. | 11-06-2014 |
20140331802 | WORM GEAR MECHANISM - A worm gear mechanism ( | 11-13-2014 |
20140339077 | PLATING DEVICE - Disclosed is a plating device that has a plating tank that retains a plating fluid and carries out magnetic metal plating on a shaft shaped member immersed in the plating fluid as a negative electrode. The plating device is provided with: a plurality of shielding jigs that are fitted to the outer peripheral surface of the shaft shaped member and regulate the part of the shaft shaped member being plated; and a positive electrode provided in the vicinity of the shaft shaped member and having an output part that faces the part being plated. A center position in the axial direction of the shaft shaped member for the part being plated and a center position of the output part are aligned within a prescribed allowable value for the center positions. | 11-20-2014 |
20150144418 | ELECTRIC POWER STEERING APPARATUS - Provided is an electric power steering apparatus capable of performing steering of a steering wheel with a comfortable steering feeling while stabilizing a vehicle behavior even in a vicinity of a steering neutral position. A first electric power steering apparatus includes a steering torque sensor for detecting a steering torque inputted by a driver, a steering angle sensor for detecting a steering angle of a steering wheel, a steering assist motor for applying a steering assist force to the steering wheel, and a drive control unit for performing drive control of the steering assist motor based on the steering torque and the steering angle. The drive control unit performs drive control of the steering assist motor based on the steering angle detected by the steering angle sensor and hysteresis characteristics related to a steering reaction force associated with a change of the steering angle. | 05-28-2015 |
20150274204 | POWER STEERING APPARATUS FOR VEHICLE AND METHOD OF PRODUCING THE SAME - A power steering apparatus for a vehicle includes a column shaft, a column pipe rotatably supporting the column shaft through a plurality of bearings, and a torque sensor for detecting torque generated on the column shaft by using magnetism. The column pipe is composed of a steel pipe. The torque sensor includes a magnetically variable portion and a magnetic change detector. The magnetically variable portion is disposed on the column shaft and has a magnetic permeability that varies with the torque generated on the column shaft. The magnetic change detector is configured to detect a change in the magnetism of the magnetically variable portion. The magnetic change detector is attached to the column pipe by being inserted in an axial direction through an opening at an axial end of the column pipe. | 10-01-2015 |
Patent application number | Description | Published |
20080234163 | SOLVENT FOR TREATING POLYSILAZANE AND METHOD OF TREATING POLYSILAZANE WITH THE SOLVENT - Polysilazane is treated with a single or mixed solvent comprising one or more members selected from the group consisting of xylene, anisole, decalin, cyclohexane, cyclohexene, methylcyclohexane, ethylcyclohexane, limonene, hexane, octane, nonane, decane, a C8-C11 alkane mixture, a C8-C11 aromatic hydrocarbon mixture, an aliphatic/alicyclic hydrocarbon mixture containing 5 to 25% by weight of C8 or more aromatic hydrocarbons, and dibutyl ether, wherein the number of 0.5 micron or more fine particles contained in 1 ml of the solvent is 50 or less. As the treatment of polysilazane, there are illustrated, for example, edge-rinsing and back rinsing of a polysilazane film formed by spin coating polysilazane on a semiconductor substrate. The water content of the solvent is preferably 100 ppm or less. | 09-25-2008 |