Abstract: A power generation device includes: a one-way clutch which is provided between an output shaft of a speed increaser and a drive shaft of a power generator, and which restricts relative rotation of the output shaft and the drive shaft in one direction and permits relative rotation thereof in another direction; and a plurality of elastic coupling members which are provided between the output shaft and the drive shaft, which are spaced in an axial direction, and which absorb misalignment between the output shaft and the drive shaft. The one-way clutch is disposed in a position axially outside an area between the plurality of elastic coupling members.

Abstract: A gate pad and a source pad are disposed on a semiconductor layer. The gate pad is disposed at the center portion of the semiconductor layer and has the shape of a circle centered on the center of the semiconductor layer as viewed in plan. The source pad is disposed so as to surround the gate pad, and has the shape of a circular ring centered on the center of the semiconductor layer as viewed in plan. A plurality of unit cells that compose a trench type MOSFET element are formed in the semiconductor layer.

Abstract: A tapered roller bearing includes: an inner ring; an outer ring; a plurality of tapered rollers having a roller large end face that is a convex curved surface; and an annular cage that holds the tapered rollers at intervals along a circumferential direction. The inner ring includes a large rib portion having a rib surface that is a concave curved surface and that contacts the roller large end face. Inequalities represented by R>Ri>Rr are satisfied, where Rr is a curvature radius of the roller large end face, Ri is a curvature radius of the rib surface in a longitudinal cross section of the inner ring, and R is a distance from a cone center to a center of a contact ellipse obtained by contact between the roller large end face and the rib surface.

Abstract: A magnet embedded rotor configured to provide an improved magnetization ratio of the field permanent magnets is provided. The magnet embedded rotor includes a first annular core in which first permanent magnets are embedded, and a second annular core in which second permanent magnets, which are independent from the first permanent magnets, are embedded. The magnet embedded rotor has a structure in which the second annular core is fitted onto the outer periphery of the first annular core. The first permanent magnets and the second permanent magnets constitute field permanent magnets.

Abstract: A machine tool including a non-contact affected layer detection sensor capable of detecting an affected layer with high precision is provided. A machine tool includes a non-contact affected layer detection sensor, a main body, probes and that contact the surface of an workpiece, arm portions supported by the main body, and dimension measurement sensors that output a signal that corresponds to the dimension of the workpiece on the basis of displacement of the arm portions with respect to the main body. The affected layer detection sensor is provided in the arm portion, and outputs a signal that corresponds to an affected state of the workpiece. The arm portions hold the probes respectively, and are displaceable with respect to the main body in accordance with the dimension of the workpiece.

Abstract: A gate pad is disposed on a semiconductor layer composed of an n+ type substrate, an n? type epitaxial layer, and a p? type body layer. The gate pad is disposed at the center portion of the semiconductor layer as viewed in plan. A plurality of unit cells that compose a trench type MOSFET element are provided in the semiconductor layer. The plurality of unit cells are arranged in the radial direction about the gate pad as viewed in plan. A gate electrode of a unit cell (center-side unit cell) that is proximate to the gate pad is electrically connected to the gate pad. Gate electrodes of unit cells that are adjacent to each other in the radial direction are connected to each other.

Abstract: In a control device for a limited slip differential that limits a differential operation of front and rear wheels of a four-wheel-drive vehicle having mounted thereon a vehicle behavior control device that controls a braking force, an ECU that controls a torque coupling as the limited slip differential includes: a differential limiting force calculating device that calculates target torque of the torque coupling based on a vehicle traveling state; a differential limiting force correcting device that makes a correction to reduce the target torque based on a command from the vehicle behavior control device; and a thermal load calculating device that calculates a thermal load of the torque coupling. The differential limiting force correcting device limits the correction of the target torque based on the command from the vehicle behavior control device, when the thermal load of the torque coupling is equal to or larger than a predetermined value.

Abstract: A hard magnetic material formed of material powders made of a R—Fe—N compound containing a light rare earth element as R, or material powders made of a Fe—N compound is used as material powders. There is formed a compact in which a density of the hard magnetic material powders differs between an outer face side portion and an inside portion of the compact such that a rate of progress of powder bonding due to microwave heating is higher in the inside portion of the compact than in the outer face side portion of the compact when an outer face of the compact is irradiated with microwaves. Then, the outer face of the compact is irradiated with the microwaves to cause the microwave heating, thereby bonding the hard magnetic material powders by oxide films which are formed on the hard magnetic material powders.

Abstract: The present invention discloses a machining error calculation apparatus for calculating the machining error more precisely through analysis.

Abstract: A vehicle steering system includes a higher-level ECU and a lower-level ECU. The lower-level ECU includes a steered angle limit setter, and steered angle limiters. The steered angle limit setter sets an allowable upper limit to a target inner and outer wheel steered angle difference responsive to the absolute value of a target outer steered angle. The steered angle limit setter calculates a limit to the absolute value of a target inner steered angle. The steered angle limit setter subsequently sets this limit for one of the steered angle limiters that is fed the target inner steered angle in the present calculation cycle. The limiter, which is fed the target inner steered angle, limits the absolute value of the target inner steered angle so that the absolute value of the target inner steered angle is equal to or below the limit, and outputs the resulting value.

Abstract: A steering system is provided which more appropriately alleviates driver's discomfort in the wrists. A steering ECU has an estimated grip angle calculating circuit, a deviation calculating circuit, an automatic steering torque command value calculating circuit, and a grip angle command value calculating circuit. The estimated grip angle calculating circuit calculates an estimated grip angle based on a steering angle. The deviation calculating circuit calculates a deviation based on the steering angle, a steering angle deviation, and the estimated grip angle. The grip angle command value calculating circuit calculates a grip angle command value that is a sum of a grip angle and the deviation.

Abstract: An inner rotary retaining member has an annular outward rolling surface formed of part of a radially outward tapered surface centering on the central axis of a first rotary drive shaft. An outer rotary retaining member has an annular inward rolling surface formed of part of a radially inward tapered surface centering on the central axis of a second rotary drive shaft. The rolling surfaces are opposed to each other. A pocket that supports a workpiece such that the workpiece rotates and revolves as the retaining members rotate is formed at a portion of the carrier, the portion being positioned between the rolling surfaces. The central axis of the workpiece supported by the pocket is inclined relative to the central axis of the rotary drive shafts.

Abstract: In manufacturing permanent magnets by filling insertion holes of a core with a magnet material, the density of the magnetic flux entering the magnet material can be restrained from being limited by the saturation magnetic flux density of the core. A guide member is placed so as to face a core in an axial direction. An orienting/magnetizing device faces the core and the guide member in the radial direction and applies a magnetic field to the guide member and the core in the radial direction. Insertion holes of the core are filled with the magnet material through guide holes of the guide member. The magnetic field is therefore applied from the orienting/magnetizing device to the magnet material passing through the guide holes.

Abstract: A steering system includes a lock mechanism and a releasing member. The lock mechanism includes a clamping shaft inserted through insertion holes in side plates, an operation lever that rotationally operates the clamping shaft, a rotational cam coupled to the clamping shaft so as to be rotatable integrally therewith and movable integrally therewith in an axial direction, a first clamping member that moves the rotational cam in the axial direction with respect to the side plates, and a stopper that restricts a rotation range of the clamping shaft. The releasing member includes a fitting portion located between the side plates and fitted on an outer peripheral surface of the clamping shaft so as to provide a clamping margin, and frictionally slides the fitting portion in the axial direction with respect to the clamping shaft when the rotational cam moves in the axial direction with respect to the side plates.

Abstract: An interior permanent magnet rotor restrains demagnetization of permanent magnets embedded in a core. Each permanent magnet is formed by joining a first portion and a second portion at a connection. The first and second portions extend from the outer side toward the inner side in the radial direction of the core. The outer end faces of the first and second portions in the radial direction of the core extend in an orientation direction as viewed in section perpendicular to the axial direction. The outside diameter of the core gradually increases from the boundaries between a single magnetic pole and magnetic poles adjoining the single magnetic pole toward the middle of the single magnetic pole in the circumferential direction of the core.

Abstract: An ECU acquires a steering torque detected by a torque sensor (step S1). The ECU drives an electromagnet of a solenoid actuator (step S2). The ECU drives a steering operation motor in accordance with the direction of the detected steering torque acquired in step S1 to apply, to an output shaft of a clutch, a torque acting in such a direction that a torque being exerted on a clutch mechanism is reduced (step S3). When a predetermined time has elapsed since driving of the steering operation motor in step S3 (step S4: YES), the ECU 40 reverses a driving direction of the steering operation motor to apply, to the output shaft of the clutch, a torque acting in a direction opposite to the direction of the last torque applied (step S5).

Abstract: A self-aligning roller bearing includes an outer ring, an inner ring, spherical rollers, a cage having a plurality of pockets that contain the spherical rollers, and a guide ring. Each spherical roller may be rotated on an imaginary line passing through a contact point at which the spherical roller contacts an outer raceway surface and a contact point at which the spherical roller contacts an inner raceway surface. Each pocket has a clearance between the pocket and a corresponding spherical roller, and the size of the pocket is set so that the rotation of the corresponding spherical roller is limited. The guide ring has such a side-surface shape that a small clearance is ensured between the spherical roller and the guide ring even when the spherical roller is rotated, in the pocket, on the imaginary line by a maximum amount at which the rotation of the spherical roller is limited.

Abstract: A steering system includes an outer jacket including a pair of clamped portions disposed on both sides of a slit, an inner jacket coated with an insulating coating layer all along an outer periphery of the inner jacket except for a predetermined area, an upper bracket that supports the clamped portions and that is fixed to a vehicle body, and a clamping mechanism including a clamping shaft that is supported in clamping shaft insertion holes in the clamped portions so as to be energized. The steering system further includes a conductive elastic member including a first portion engaged with one of a slit inside portion of the clamping shaft positioned in the slit and the predetermined area so as to be energized and a second portion that slide-contacts the other of the slit inside portion and the predetermined area.

Abstract: A controller unit includes: a base unit having a slot; a module that includes a printed circuit board and that is mounted on the base unit; a pair of male and female connectors, one being included in the base unit and the other being included in the module; and a turning support that allows the module to be turned with respect to the base unit. A pair of a recess and a projection are provided to prevent wrong attachment. The base unit has one of the recess and the projection and the module has the other. The positions of the recess and the projection vary depending on the type of module.

Abstract: A hardening method for an annular workpiece made of metal includes a heating process that heats the annular workpiece to a hardening temperature; an analyzing process that obtains a diameter of the annular workpiece heated to the hardening temperature, and divides the heated annular workpiece into at least a small diameter portion and a large diameter portion based on the obtained diameter; and a cooling process that injects cooling liquid under an injection condition toward the annular workpiece that has been divided into at least the large diameter portion and the small diameter portion in the analyzing process such that a dimensional difference between the large diameter portion and the small diameter portion decreases, the injection condition for the large diameter portion being different from the injection condition for the small diameter portion.