Patent application number | Description | Published |
20080252145 | DC/DC POWER CONVERSION DEVICE - A DC/DC power conversion device includes n-stage circuits comprised of an inverter circuit for driving which is connected between positive terminals and negative terminals of smoothing capacitors, and a rectifier circuit which is connected between positive terminals and negative terminals of smoothing capacitors; a first circuit corresponding to at least one among the n-stage circuits and configured by connecting in parallel cell circuits of m, second circuits corresponding to a plurality of remaining circuits of (n−1) among the n-stage circuits; capacitors for energy transfer connected between middle points of the cell circuits and middle points of the second circuits; and column circuits of m comprised of the cell circuits, the second circuits and the capacitors for energy transfer, wherein the middle points are contact points of high voltage sided elements and low voltage sided elements of the cell circuits and the second circuits; and driving signals for driving the respective column circuits have the same driving cycle and are out of phase with each other. | 10-16-2008 |
20080253156 | DC/DC POWER CONVERSION DEVICE - A DC/DC power conversion device with smoothing capacitors including three column circuits share the smoothing capacitors to be connected in parallel, each column circuit have a plurality of circuits connected in series where two MOSFETs are connected in series between both ends of respective smoothing capacitors and LC serial bodies of capacitors and inductors with the same resonant cycle are disposed between the circuits at two middle terminals. Driving signals for the respective column circuits have the same driving cycle identical with the resonant cycle of the LC serial bodies, and are out of phase with each other by 2π/3(rad), and thus charge-discharge currents towards the smoothing capacitors are circulated among the column circuits and ripple currents flowing through the smoothing capacitors are reduced. | 10-16-2008 |
20090261793 | DC/DC POWER CONVERTING APPARATUS - Three or more circuits, in which series-connected low-voltage and high-voltage side switches including MOSFETs including parasitic diodes are connected across positive and negative terminals of each of smoothing capacitors, are connected in series. One of elementary series circuits, each including a capacitor and an inductor, is disposed between any adjacent two of the circuits with the elementary series circuits set to have the same period of resonance. The MOSFETs of rectifier circuits are brought into an ON state simultaneously with the MOSFETs of a driving inverter circuit and brought into an OFF state earlier than the MOSFETs of the driving inverter circuit by a period of time not exceeding a time period equal to (period of resonance)/2. A resonance phenomenon of the capacitor and the inductor is used and conduction loss in the rectifier circuits is reduced in DC/DC power conversion performed through charging and discharging operation of the capacitor. | 10-22-2009 |
20100019753 | DC/DC POWER CONVERTING APPARATUS - Three or more circuits including a driving inverter circuit and rectifier circuits are connected in series, each of the circuits including a high-voltage side MOSFET and a low-voltage side MOSFET connected in series as well as a smoothing capacitor having positive and negative terminals between which the MOSFETs are connected. LC series circuits, each including a capacitor and an inductor, are disposed individually between one specific circuit and the other circuits with periods of resonance of the LC series circuits made equal to one another. In performing DC/DC power conversion through charging and discharging operation of the capacitors, a resonance phenomenon of the LC series circuits is used to improve conversion efficiency and achieve a reduction in size of the apparatus structure. | 01-28-2010 |
20100074581 | Semiconductor Submodule, Method for Connecting Connector and Semiconductor Submodule, and Optical Module - A semiconductor submodule includes a substrate ( | 03-25-2010 |
20110047731 | OPTICAL CONNECTOR CLEANING TOOL - An optical connector clearing tool ( | 03-03-2011 |
20110181250 | POWER SUPPLY APPARATUS - A power supply apparatus includes: an AC generator including an AC generating section, and a rectifier for rectifying an AC voltage generated in the AC generating section, and outputting a DC voltage; and a DC/DC converter for converting the output voltage of the rectifier into a DC voltage having a different voltage value, wherein the output voltage of the rectifier is set to be larger than the output voltage of the DC/DC converter in accordance with the rotation speed of the AC generating section and the amount of power supply to an electrical load connected to the DC/DC converter, and is stepped down and outputted by using the DC/DC converter. The power supply apparatus is capable of increasing an output power efficiently. | 07-28-2011 |
20120126764 | DC/DC POWER CONVERSION APPARATUS - An object of the present invention is to provide a DC/DC power conversion apparatus that can reduce the average power consumption over a wide range of DC voltage ratios. A control circuit ( | 05-24-2012 |
20130119961 | DC/DC CONVERTER - In a DC/DC converter, a first operation section calculates a first operation value, based on a difference voltage between an instruction value for a high-voltage-side voltage and a detected value of a high-voltage-side voltage, a second operation section calculates a second operation value, based on a difference voltage between a voltage instruction value for a charge-discharge capacitor and a voltage detected value of the charge-discharge capacitor, and a switching control section obtains a conduction ratio, based on the first operation value and the second operation value, and controls, based on the conduction ratio, switching operations of first to fourth semiconductor circuits, thereby controlling the high-voltage-side voltage, and the voltage of the charge-discharge capacitor. | 05-16-2013 |
20130185883 | OPTICAL CONNECTOR CLEANER - An optical connector cleaner comprising a supply reel, a take-up reel, a case, an operation lever, a take-up mechanism, and a holding member. The supply reel stores a cleaning cloth member having one end side wounded thereon. The take-up reel takes up the other end side of the cleaning cloth member. The case has a connector connection portion on which the cleaning cloth member is exposed. The operation lever that has an operation portion projecting from the case and is swingably supported. The take-up mechanism rotates the take-up reel in a take-up direction by a predetermined angle when the operation lever swings. The holding member holds an optical connector on the connector connection portion in a state in which a coupling face of the optical connector is pressed against the cleaning cloth member exposed to the connector connection portion. | 07-25-2013 |
Patent application number | Description | Published |
20110019077 | CAMERA MODULE FABRICATING METHOD AND CAMERA MODULE - There is disclosed a method for fabricating a camera module includes the steps of: disposing a camera module body inside of a die; filling the die with a resin blocking a light; curing the resin; and removing the camera module body and the resin from the die. Here, disposing the camera module body inside of the die is disposing the camera module body having a lens holder secured on a sensor board inside of the die in such a manner that the side surface of the camera module body is not brought into contact with the side surface of the die. Filling the die with the resin is covering the upper end of the die with a lid so as to closely enclose the inside of the die, followed by filling the die with the resin. Taking the camera module body and the resin from the die is taking, from the die, the camera module body and the resin formed around the camera module body in close contact. | 01-27-2011 |
20110234890 | CAMERA MODULE - A camera module according to one embodiment of this invention has a sensor substrate, a lens holder, and a shield being fixed to the lens holder. The lens holder is composed of a tubular portion including a lens and a top board having an opening. The lens holder is fixed by a second adhesive provided more inside than an edge of the sensor substrate. The shield has a tubular portion and a top board. The tubular portion is composed of a small-diameter portion, a step portion, and a large-diameter portion. The shield is disposed so that the step portion is in contact with a portion between the edge of the sensor substrate and the second adhesive, and, at the same time, the top board of the lens holder is located in an opening formed in the top board of the shield. | 09-29-2011 |
Patent application number | Description | Published |
20090025500 | WAVE GEAR DEVICE - A wave gear device is proposed having an anti-ratcheting mechanism having a simple configuration, wherein a center through-hole is formed in a cylinder hub of a wave generator, a small-diameter shaft end portion of a rotating input shaft is concentrically inserted in the center through-hole, and the two members are fastened by a fastening bolt, and a friction ring is concentrically sandwiched between the small-diameter shaft end portion and the cylinder hub and pressed in the radial direction with a prescribed force, whereby when transmission torque from the rotating input shaft to the wave generator | 01-29-2009 |
20090261609 | ROBOT HAND AND FINGER MECHANISM - A robot hand converts the longitudinal extending and retracting motion of an actuating rod of a linear actuator into opening and closing motion of left and right first links via a link mechanism. The link mechanism includes left and right middle links composed of coil springs. When the left and right first links come in contact with an object to be gripped, the middle links elastically deform and expand, and the force gripping the object gradually increases due to the elastic deformation of the middle links. It is possible to prevent a large gripping force from acting suddenly on the object and to prevent the object from being deformed, damaged, or otherwise suffering harmful effects. | 10-22-2009 |
20090293659 | WAVE-GEAR-TYPE LINEAR-ACTUATION MECHANISM - A wave-gear-type linear-actuation mechanism comprises a flat-type wave gear; a lead screw that is a structural component of the wave gear and is formed on an outer peripheral surface of a first circular spline; and a linear-actuation cylinder threaded onto the lead screw, a linear-actuation cylinder | 12-03-2009 |
20120153655 | ROBOT HAND AND FINGER MECHANISM - A robot hand converts the longitudinal extending and retracting motion of an actuating rod of a linear actuator into opening and closing motion of left and right first links via a link mechanism. The link mechanism includes left and right middle links composed of coil springs. When the left and right first links come in contact with an object to be gripped, the middle links elastically deform and expand, and the force gripping the object gradually increases due to the elastic deformation of the middle links. It is possible to prevent a large gripping force from acting suddenly on the object and to prevent the object from being deformed, damaged, or otherwise suffering harmful effects. | 06-21-2012 |
20130316867 | WAVE GENERATOR FOR WAVE GEAR DEVICE - A wave generator for a wave gear device is provided with a pair of first rollers arranged in a position that is point-symmetric in relation to the center of a flexible externally toothed gear, a pair of second rollers, and a pair of third rollers. The first rollers are located on a long axis of the flexible externally toothed gear that is being flex into an ellipsoidal shape, and the second and third rollers are located in positions that are linearly symmetric in relation to the long axis between the long axis and a short axis. Support bearings of the first rollers are larger than those of the second and third rollers. The rolling fatigue life of a roller-type of the wave generator can be to be enhanced. | 11-28-2013 |
20130316868 | WAVE GENERATOR OF WAVE GEAR DEVICE - An externally toothed portion of a cup-shaped flexible externally toothed gear of a wave gear device is flexed into an ellipsoidal shape by a six-roller-type wave generator. A region of an inner peripheral surface of the ellipsoidally flexed externally toothed portion that is positioned on a major axis of the ellipsoidal shape is maximally inclined. First rollers of the wave generator are arranged so that the incline is identical to the incline of the region of the inner peripheral surface. A circular outer peripheral surface of the first rollers can be brought into contact with the region of the inner peripheral surface in an external-tooth tooth-trace direction without deflection; therefore, the angular transmission precision of the wave gear device can be improved. | 11-28-2013 |
20140190298 | WAVE GEAR DEVICE - The interior space of a cup-shaped flexible externally toothed gear of a cup-type wave gear device is divided into a front interior space and a rear interior space by a partition mechanism. A lubricant is filled in the front interior space at the side of a wave generator, to which lubrication is required. The volume of the front interior space is set so that a necessary amount of lubricant is filled. Since the lubricant is not necessary to fill in the entire interior space of the flexible externally toothed gear, the amount of lubricant to be filled can be reduced. | 07-10-2014 |
Patent application number | Description | Published |
20110181105 | POWER CONVERSION APPARATUS FOR VEHICLE USE - A power conversion apparatus for vehicle use having a small size and a light weight is obtained. The power conversion apparatus is provided with: a plurality of semiconductor modules in which semiconductor devices are molded with a resin, and each of which has a module body, an input terminal, and an output terminal; a heat sink of a rectangular parallelepiped shape which has cooling principal planes on opposite surfaces thereof, respectively, for cooling these semiconductor modules; and a plurality of control boards which control the driving of the semiconductor modules. Each of the semiconductor modules is arranged such that its module body has a principal plane in surface contact with one of the cooling principal planes of the heat sink, and each of the control boards is arranged in opposition to a surface of the module body at an opposed side of the principal plane thereof. | 07-28-2011 |
20120139684 | REACTOR - The invention provides a reactor to be built in a power converter. In the reactor, an induction component composed of a coil being a winding of a conductor wire, a core in which interior a magnetic path is formed and an insulation bobbin positioning and engaging a wire wound part of the coil is housed in a case to be soaked with a mold resin. Inner bottom face of the case has a plurality of surfaces having not less than two different heights letting the outside bottom of the case a reference surface, and the lower end face of the core is in contact with any of the case inner bottom surfaces excluding the lowest inner bottom surface. As a result, the reactor is suitable for on-vehicle applications to achieve reduced article variation as well as a longer service life, a shorter operation time and decreased cost. | 06-07-2012 |
20130002215 | DC-DC POWER CONVERSION APPARATUS - Disclosed is a DC-DC power conversion apparatus ( | 01-03-2013 |
20130002227 | POWER CONVERTER - A power converter has one set of two semiconductor switches performing switching actions, each of which is formed of an FET and a free wheel diode connected in anti-parallel to the FET, and a smoothing capacitor, and convers power by complementary switching actions of the FETs in the semiconductor switches. The power converter is provided with a current sensor that detects a direction of a current flowing through the semiconductor switches and a gate generation portion that skips ON signals of PWM gate signals of the semiconductor switches when the direction of the current flowing through the semiconductor switches is negative. | 01-03-2013 |
20140152276 | DC/DC VOLTAGE CONVERTER AND VOLTAGE CONVERSION CONTROL METHOD THEREFOR - A power module includes at least two pairs of two power semiconductor units (PSUs), each of which includes a switch element and a rectifier element connected in anti-parallel. One of two PSUs in one pair and one of two PSUs in another pair are connected in series between primary and secondary positive terminals of a DC/DC voltage converter. Another of two PSUs in the one pair and another of two PSUs in the another pair are connected in series between the primary positive terminal and a secondary negative terminal in a direction reverse to a direction of the ones of two PSUs. Control is performed to suppress transient voltage fluctuations that occur in switching between the state where the polarity of a reactor current is only one of positive and negative and the state where the polarity remains one of positive and negative. | 06-05-2014 |
Patent application number | Description | Published |
20120212552 | MATTING AGENT APPLYING DEVICE AND INKJET RECORDING DEVICE - A matting liquid coating section supplies a matting liquid to an outer peripheral surface of a pressing roller. At the matting liquid coating section, a web, that is a non-woven fabric or the like and in which is seeped a matting liquid formed from a liquid (silicon oil or the like) in which matting agent particles are dispersed at a predetermined concentration, is trained around a first rod and a second rod, and is made to abut an outer peripheral surface of the pressing roller while running along the outer peripheral surface. The matting liquid is transferred once to the outer peripheral surface of the pressing roller, and the matting agent particles that adhere to the roller surface are again transferred onto a surface of a recording medium. | 08-23-2012 |
20120229581 | IMAGE FORMING METHOD AND IMAGE FORMING DEVICE - An image forming method includes an ejecting step, a drying step after the ejecting step, and a particle-providing step after the drying step. The ejecting step includes ejecting aqueous ink onto a recording medium and forming an image. The drying step includes drying such that a difference between a water amount contained in the recording medium after the drying and a water amount that was contained in the recording medium before the ejecting is from 1.0 g/m | 09-13-2012 |
20130162714 | INKJET RECORDING METHOD - An inkjet recording method included a feeding step of feeding a recording medium, a jetting step of jetting aqueous ultraviolet-curable ink onto the recording medium, a humidity controlling step of controlling the amount of moisture on the surface on the recording side of the recording medium after the jetting step in such a way that a difference between the amounts of moisture on the surface on the recording side of the recording medium after the jetting step and during the feeding step becomes equal to or greater than 2 g/m | 06-27-2013 |
20130222502 | IMAGE FORMING METHOD - An image forming method uses an ink set that includes applying a liquid composition onto a recording medium; further applying a ink composition onto the recording medium with an ink jet method to form an image; drying the image at a surface temperature of the image of 35° C. to 55° C. until a difference between a residual water content of a non-image portion on the recording medium and a residual water content of a image portion where an application amount of the ink composition is the maximum is 2 g/m | 08-29-2013 |