Abstract: The four-wheel steering system includes a front-wheel steering system that steers front wheels of a vehicle and a rear-wheel steering system that steers rear wheels of the vehicle in accordance with a steering angle that is a rotation angle of a steering wheel. The rear-wheel steering system includes a second ECU that, when the vehicle speed is equal to or lower than a vehicle speed threshold, performs antiphase control in which the rear wheels are steered in the opposite direction to that in which the front wheels are steered. When the vehicle speed is equal to or lower than the vehicle speed threshold, the second ECU performs in-phase control in which the rear wheels are steered in the same direction as that in which the front wheels are steered, in response to a specific trigger operation that is performed via the steering wheel.

Abstract: The four-wheel steering system includes a rear-wheel steering system that steers rear wheels of the vehicle in accordance with a steering angle of a steering wheel. When the vehicle speed is lower than a vehicle speed threshold, the rear-wheel steering system steers the rear wheels in an opposite direction to that in which the front wheels are steered. When the vehicle speed is lower than the vehicle speed threshold, the rear-wheel steering system sharply increases the rate of increase in target steered angle of the rear wheels with respect to an increase in steering angle when an absolute value of the steering angle is equal to or larger than an absolute value of an angle threshold. The front-wheel steering system has a motor that is a source of a steering assist force and a first ECU that controls the motor in accordance with the steering state.

Abstract: An aligner includes a driving pulley connected to a motor, a toothed belt hung with respect to a driven pulley connected to a spindle, and a pulley detection sensor detecting the rotation position of the driven pulley. Each time the driving pulley rotates the driven pulley once, the misalignment in the direction of rotation of the driven pulley is detected and a correction value of the rotational misalignment of the driven pulley is calculated based on the driving and driven pulleys having a known rotation ratio. In a case where the rotation angle information of the driving motor is lost, detection data for calibration is created so that a correction value corresponding to the current phases of the driven pulley and the toothed belt after origin search is searched for.

Abstract: A steering gear for a boat includes a steering mechanism that moves a rudder, and a driving source. The steering mechanism has: a housing that is fixed to a hull; an output shaft that is rotatably supported by the housing; a first conversion mechanism that is provided inside the housing and converts power from the driving source into rotation of the output shaft; and a second conversion mechanism that is provided outside the housing and converts rotation of the output shaft into motion of the rudder.

Abstract: A control device for a vehicle according to the disclosure is provided. The vehicle includes a steering device, a braking and driving force generation device, a steered angle state quantity sensor and a vehicle wheel speed sensor. The control device includes an electronic control unit configured to control an operation of the braking and driving force generation device, to calculate an actual traveling direction which is an actual direction of travel of the vehicle, based on the vehicle wheel speed of each of the right and left steered wheels and the steered angle state quantity, and to cause the actual traveling direction to follow a target traveling direction which is a target direction of travel of the vehicle.

Abstract: The four-wheel steering system includes a rear-wheel steering system that steers rear wheels of the vehicle in accordance with a steering angle of a steering wheel. When the vehicle speed is lower than a vehicle speed threshold, the rear-wheel steering system steers the rear wheels in an opposite direction to that in which the front wheels are steered. When the vehicle speed is lower than the vehicle speed threshold, the rear-wheel steering system sharply increases the rate of increase in target steered angle of the rear wheels with respect to an increase in steering angle when an absolute value of the steering angle is equal to or larger than an absolute value of an angle threshold. The front-wheel steering system has a motor that is a source of a steering assist force and a first ECU that controls the motor in accordance with the steering state.

Abstract: The four-wheel steering system includes a front-wheel steering system that steers front wheels of a vehicle and a rear-wheel steering system that steers rear wheels of the vehicle in accordance with a steering angle that is a rotation angle of a steering wheel. The rear-wheel steering system includes a second ECU that, when the vehicle speed is equal to or lower than a vehicle speed threshold, performs antiphase control in which the rear wheels are steered in the opposite direction to that in which the front wheels are steered. When the vehicle speed is equal to or lower than the vehicle speed threshold, the second ECU performs in-phase control in which the rear wheels are steered in the same direction as that in which the front wheels are steered, in response to a specific trigger operation that is performed via the steering wheel.

Abstract: Two flat surface portions are provided on portions of a rack shaft away from rack teeth and a back surface in the circumferential direction. The two flat surface portions are parallel to each other. A rotation stopping member has a case and a low-friction member. The hollow portion provided inside the case includes two flat surface portions that face each other in a direction Y and extend in parallel with each other, and two flat surface portions that face each other in a direction Z and extend orthogonally to the flat surface portions. A slight clearance is provided between the outer surface of the rack shaft and the inner surface of the rotation stopping member (low-friction member). The rotation stopping member is disposed on the outer periphery of the rack shaft. The outer periphery of the rotation stopping member is fixed to the inner periphery of a rack housing.

Abstract: A steering system is provided in which a bearing of a tension pulley has a reduced load-carrying capacity. A belt tension adjusting mechanism has a seat provided on an inner surface of a reduction gear housing so as to be able to swing, a rod that is in abutting contact with the seat (bent portion), a feed nut that is screw-threaded over the rod, and a spring member (helical torsion spring) that is fixed to the feed nut at its one end and to the reduction gear housing at the other end. When the belt is loosened, the feed nut is rotated by an elastic force of the spring member, and in conjunction with the rotation, the rod moves away from the feed nut to push the seat (bent portion).

Abstract: Two flat surface portions are provided on portions of a rack shaft away from rack teeth and a back surface in the circumferential direction. The two flat surface portions are parallel to each other. A rotation stopping member has a case and a low-friction member. The hollow portion provided inside the case includes two flat surface portions that face each other in a direction Y and extend in parallel with each other, and two flat surface portions that face each other in a direction Z and extend orthogonally to the flat surface portions. A slight clearance is provided between the outer surface of the rack shaft and the inner surface of the rotation stopping member (low-friction member). The rotation stopping member is disposed on the outer periphery of the rack shaft. The outer periphery of the rotation stopping member is fixed to the inner periphery of a rack housing.

Abstract: A steering system is provided in which a bearing of a tension pulley has a reduced load-carrying capacity. A belt tension adjusting mechanism has a seat provided on an inner surface of a reduction gear housing so as to be able to swing, a rod that is in abutting contact with the seat (bent portion), a feed nut that is screw-threaded over the rod, and a spring member (helical torsion spring) that is fixed to the feed nut at its one end and to the reduction gear housing at the other end. When the belt is loosened, the feed nut is rotated by an elastic force of the spring member, and in conjunction with the rotation, the rod moves away from the feed nut to push the seat (bent portion).

Abstract: A rack-parallel electric power steering device includes a housing that covers the periphery of a speed reducer, and a drain valve provided in the housing. The drain valve includes a first case, a second case mounted to the outer peripheral portion of a bottom portion of the first case, and a valve element that closely contacts a bottom surface of the first case. A through hole is formed in the bottom portion of the first case. The second case includes a bottom portion which is disposed with a gap from the bottom portion of the first case and in which discharge holes are formed. The valve element is an elastic member that blocks an opening portion of the through hole of the first case and that is held between the first case and the second case.

Abstract: Provided is a position detecting device that is capable of precisely detecting the coordinates of the center of a disc-shaped substrate from image data captured by one camera, calculating the amount of positional misalignment of the disc-shaped substrate on a support member as the disc-shaped substrate is being transported during processing, and correcting the position such that the substrate can be located at the precise loading position. Isosceles right triangles, each having the radius of the disc-shaped substrate as one side, are generated from the coordinates of two places on edge data extracted from the image data and the radius on the edge data, and the coordinates of the center position of the disc-shaped substrate are detected by using the Pythagorean theorem.

Abstract: A magnetic-drive coupling pump configuration including an attachment/detachment mechanism allowing simple and reliable positioning and fixation is provided. Thrust-direction positioning and radial-direction positioning are achieved, respectively, by surface contact of a convex portion of a pump unit (10) inserted up to a predetermined position in a concave portion (31) of a drive motor unit (30), and contact between an outer circumferential surface of the convex portion (11) and an inner circumferential surface of the concave portion (31).

Abstract: A drive unit of a magnet coupling pump, in which leakage of the magnetic flux to the outside and the effect of the external magnetic field are suppressed. The drive unit includes: a driving magnet (219) positioned at an outside of the driven magnet (19) of the magnetic coupling pump (100) with respect to a rotation axis (A) of the magnetic coupling pump (100) to face the driven magnet (19) with a gap; a cup tube portion (221) made of a ferromagnetic material and in a tubular shape centered on the rotation axis (A); a case main body (231) including a cup (220) in which the driving magnet is fixed inside of the cup tube portion; a motor (210) rotating the cup around the rotation axis, and a tube portion (232), which is tubular in shape. The cup is provided in the tube portion (232) with a gap.

Abstract: In an electric power steering system, rotation of a motor is transmitted to a rack shaft via a drive pulley, a belt, a driven pulley and a ball nut. A ball bearing and the driven pulley are fitted to the outer periphery of the ball nut. A flange is formed at a first end portion of the ball nut, and an internal thread portion is formed at a second end portion of the ball nut. An external thread member is connected to the internal thread portion. The external thread member has an external thread portion and a flange. By fastening the external thread portion to the internal thread portion, the ball bearing and the driven pulley are held between the two flanges.

Abstract: Provided is a position detecting device that is capable of precisely detecting the coordinates of the center of a disc-shaped substrate from image data captured by one camera, calculating the amount of positional misalignment of the disc-shaped substrate on a support member as the disc-shaped substrate is being transported during processing, and correcting the position such that the substrate can be located at the precise loading position. Isosceles right triangles, each having the radius of the disc-shaped substrate as one side, are generated from the coordinates of two places on edge data extracted from the image data and the radius on the edge data, and the coordinates of the center position of the disc-shaped substrate are detected by using the Pythagorean theorem.

Abstract: A rack-parallel electric power steering device includes a housing that covers the periphery of a speed reducer, and a drain valve provided in the housing. The drain valve includes a first case, a second case mounted to the outer peripheral portion of a bottom portion of the first case, and a valve element that closely contacts a bottom surface of the first case. A through hole is formed in the bottom portion of the first case. The second case includes a bottom portion which is disposed with a gap from the bottom portion of the first case and in which discharge holes are formed. The valve element is an elastic member that blocks an opening portion of the through hole of the first case and that is held between the first case and the second case.

Abstract: In a magnetic coupling pump including a closed impeller, and a casing that houses the impeller in such a way that the impeller is rotatable around a rotation axis and movable in an axis direction in which the rotation axis extends, reduction in the rotational frequency of the impeller can be suppressed even if thrust balance collapses temporarily and the impeller and the casing come into contact with each other. A tapered surface (24) or (55) is formed in at least a portion of at least one of a surface (24) or (53) of the impeller (10) and a surface (66) or (86) of a pump casing (60) that faces each other in an axis direction (Da) so that the distance between both the faces varies gradually as it goes in a radial direction (Dr) perpendicular to the axis direction (Da).

Abstract: A magnetic-drive coupling pump configuration including an attachment/detachment mechanism allowing simple and reliable positioning and fixation is provided. Thrust-direction positioning and radial-direction positioning are achieved, respectively, by surface contact of a convex portion of a pump unit (10) inserted up to a predetermined position in a concave portion (31) of a drive motor unit (30), and contact between an outer circumferential surface of the convex portion (11) and an inner circumferential surface of the concave portion (31).