Abstract: Provided are an oil pan (20) which has an annular recess portion (52) facing an outer circumferential edge of a spherical concave portion (36) throughout a whole circumference; and a cover (21) which is constituted in a tubular shape, of which one axial end portion is rotatably supported by a part adjacent to a radially inner side of the annular recess portion (52), and of which an axially opposite end portion is rotatably supported by a part of a shaft-equipped spherical seat (18) on the one axial end side.

Abstract: A terminal position learning unit includes a first storage unit configured to store a steered position positioned farthest from a neutral position of a turning mechanism within a range of a steered position detected by a position detection unit when rotational force applied to the turning mechanism is less than or equal to a first predetermined value, a second storage unit configured to store a steered position positioned farthest from the neutral position within a range of a position to which a steered position detected by the position detection unit is shifted in a direction toward the neutral position by a second predetermined value, and a third storage unit configured to store, as a terminal position stored by the terminal position learning unit, one of the steered positions stored in the first storage unit and the second storage unit positioned farther from the neutral position than the other.

Abstract: A method for manufacturing a magnetostrictive torque sensor shaft (100) to which a sensor portion (2) of a magnetostrictive torque sensor (1) is to be attached includes: a heat treatment step of subjecting an iron-based shaft member to a carburizing, quenching, and tempering process; a shot peening step of performing shot peening using a steel shot media having a Vickers hardness at least equal to 1100 and at most equal to 1300, at least in a position on the shaft member, after the heat treatment step, to which the sensor portion (2) is to be attached; and a surface polishing step of subjecting the shaft member after the shot peening to surface polishing.

Abstract: A method for carburizing a steel member of the present invention includes: bringing a carburizing agent into contact with at least a part of a surface of a steel member; and heating the steel member and the carburizing agent to allow carbon to penetrate into at least a part of the surface, in which the carburizing agent contains a Fe-C alloy powder, a graphite powder in an amount of 20% by volume or more and 70% by volume or less relative to a total volume of the carburizing agent, and a binder that binds the Fe-C alloy powder and the graphite powder to each other, and in the heating, a heating temperature is held for a certain period of time within a temperature range of an austenite region of a eutectic point of the steel member or higher and lower than the peritectic point of the steel member.

Abstract: A parallel link mechanism includes three or more link mechanisms that couple a fixed base and an end-effector base. The end-effector base has a facing surface facing the fixed base. The link mechanisms each include a proximal-end joint, a proximal link, an intermediate joint, a distal link, and a distal-end joint. The proximal-end joint is rotatably coupled to the fixed base. The proximal link is coupled to the proximal-end joint. The intermediate joint is provided to the proximal link. The distal link is rotatably coupled to the proximal link via the intermediate joint. The distal-end joint rotatably couples the distal link to the end-effector base. The point of intersection at which the extensions of the axes of rotation of the proximal-end joints, the extensions of the axes of rotation of the intermediate joints, and the extensions of the axes of rotation of the distal-end joints intersect is the center of rotation of the end-effector base.

Abstract: A motor supporting structure for a steering device includes a motor one end of which has an output shaft extending along the axial direction of the rack bar, a motor peripheral part that is disposed on the other end of the motor, and a first fastener that includes a first bolt and that fastens the motor and the motor peripheral part in the axial direction. The rack housing includes a first support that supports one end of the power generator unit and a second support that supports the other end of the power generator unit. The second support has a tip portion connected to the other end of the power generator unit. The tip portion of the second support has a first hole through which the shaft of the first bolt passes, and is fastened by a first fastener, together with the motor and the motor peripheral part.

Abstract: The electric motor with a reverse input cutoff clutch has an output shaft. The output shaft is configured by connecting a first shaft and a second shaft that are coaxially arranged with each other via the reverse input cutoff clutch. The second shaft is rotatably supported to a housing by one radial bearing. The reverse input cutoff clutch has a function that, when rotational torque is inputted to the first shaft, transmits the rotational torque inputted to the first shaft to the second shaft, and when rotational torque is reversely inputted to the second shaft, completely cuts off the rotational torque reversely inputted to the second shaft, and does not transmit the rotational torque to the first shaft, or transmits a part of the rotational torque to the first shaft, and cuts off the remaining part.

Abstract: A reverse input blocking clutch has a pressed member having a pressed surface on the inner circumferential surface; an input member having an input-side engaging portion arranged on the inner side in the radial direction of the pressed surface and coaxially arranged with the pressed surface; an output member having an output-side engaging portion arranged further on the inner side in the radial direction than the input-side engaging portion and coaxially arranged with the pressed surface; an engaging element arranged on the inner side in the radial direction of the pressed surface so as to move in a first direction which is a far-near direction with respect to the pressed surface; and an elastic member arranged at a position overlapping the output-side engaging portion with respect to the first direction so as to be elastically stretched between the output-side engaging portion and the engaging element.

Abstract: A method for carburizing a steel member of the present invention includes: bringing a carburizing agent into contact with at least a part of a surface of a steel member; and heating the steel member and the carburizing agent to allow carbon to penetrate into at least a part of the surface, in which the carburizing agent contains a Fe—C alloy powder, a graphite powder in an amount of 20% by volume or more and 70% by volume or less relative to a total volume of the carburizing agent, and a binder that binds the Fe—C alloy powder and the graphite powder to each other, and in the heating, a heating temperature is held for a certain period of time within a temperature range of an austenite region of a eutectic point of the steel member or higher and lower than the peritectic point of the steel member.

Abstract: To be self-propelled in a simple configuration and to perform manual operation smoothly and briskly. A driving wheel includes: a base portion; a rotating shaft (first shaft) rotatably provided with respect to the base portion; a rotation member rotatably provided around the rotating shaft; a drive shaft (second shaft) provided on the rotation member orthogonally to the rotating shaft; a drive wheel provided on the rotation member and rotatable around the drive shaft; a drive unit provided on the rotation member and configured to rotationally drive the drive wheel; and a lock mechanism configured to permit rotation of the rotation member with respect to the base portion, and meanwhile, to deter the rotation of the rotation member with respect to the base portion.

Abstract: A torque measurement device includes a case that does not rotate even during use; a rotating shaft rotatably supported to the case and having a magnetostrictive effect part whose magnetic permeability changes according to a transmitted torque; and a magnetostrictive sensor having a detection part arranged closely adjacent to the magnetostrictive effect part so that a voltage changes according to change of the magnetic permeability of the magnetostrictive effect part, and being supported to the case; and the torque measurement device has a rotation-preventing construction configured to prevent the magnetostrictive sensor from rotating with respect to the case.

Abstract: An assist mechanism includes: an electric motor in which a rotor has a magnet and a stator has a winding; a shaft-shaped member in which a worm engaged with a worm wheel is formed; and a coupling that couples an output shaft of the electric motor and the shaft-shaped member to each other. The smallest rotation order among rotation orders of the electric motor and a rotation order of the worm are prime to each other.

Abstract: In a torque sensor (1), a sleeve (21) is an annular member mounted on a first rotating member. An intermediate member (26) is an annular member placed on an outer circumferential face of the sleeve (21). A magnet (25) is an annular member placed on an outer circumferential face of the intermediate member (26). A yoke (35) is mounted on a second rotating member and faces the magnet (25) in a radial direction. A rotating member connecting part (211) of the sleeve (21) is cylindrical and is in contact with the first rotating member. An intermediate member connecting part (215) is at a position shifted with respect to the rotating member connecting part (211) in an axial direction parallel to a central axis Z. An outer diameter (E219) of a sleeve end (219), which is an end of the intermediate member connecting part (215) opposite from the rotating member connecting part (211), is smaller than a minimum inner diameter (I25) of the magnet (25).

Abstract: A torque load member has a detected surface which is configured to face a magnetostrictive torque sensor. The detected surface is a shot peened surface whose magnetic anisotropy directed in a specific direction has been reduced by performing shot peening thereto at an arc height value of 0.31 mmA or more.

Abstract: A tilt assembly (30) for a steering column assembly (10) including a pair of downwardly disposed plates each having a slot (36); an elongated member adapted to be rotated, wherein the elongated member penetrates the slot (36) of each downwardly disposed plate and extends therebetween; a rotational member (50) located within each slot (36) and having an opening through which the elongated member is received; a biasing member (60) with a first end (62) and a second end (68), where at least one end engages with the rotational member (50). The biasing member (60) is adapted to drive rotation of the rotational member (50). When the tilt assembly (30) is in an unlocked position, the rotational member (50) is adapted to travel with respect to the slot (36), and when the tilt assembly (30) is in a locked position, the rotational member (50) is adapted to rotate and engage with a wail that is fixed with respect to the slot (36).

Abstract: A bearing component is an annular member with a two-dimensional code which has a shape with a maximum circumferential dimension longer than a maximum radial dimension or a maximum axial dimension. An individual identification method for the bearing component includes the steps of imaging while rotating the bearing component, detecting a line pattern of the two-dimensional code from a captured image, recognizing the two-dimensional code based on an extension direction of the line pattern, extracting corresponding registration information by referring to a database based on information of the two-dimensional code, and identifying the bearing component according to the extracted registration information.

Abstract: In a torque sensor, a sleeve is an annular member that is attached to a first rotating member. An intermediate member is an annular member that is placed on an outer circumferential surface of the sleeve. A magnet is an annular member that is placed on an outer circumferential surface of the intermediate member. A yoke is attached to a second rotating member and faces the magnet in a radial direction. A rotating member connecting portion of the sleeve has a cylindrical shape and is contact with the first rotating member. An intermediate member connecting portion is at a position shifted with respect to the rotating member connecting portion in an axial direction. The intermediate member includes a thin portion and a thick portion having a thickness greater than that of the thin portion.

Abstract: The present teachings relate to a spacer having a body portion and two or more opposing contact surfaces extending from the body portion, forming an angle with the body portion. The spacer may be adapted to engage with a portion of a steering column assembly to reduce or prevent rotation of a column tube during a telescoping adjustment. The teachings also include an adjustable steering column assembly having a column tube with a portion extending therefrom; a steering shaft supported for rotation at least in part by the column tube; a column housing for at least partially supporting the column tube; and the spacer. The spacer may be secured to the column tube to reduce or prevent rotation of the column tube. The teachings further contemplate a method of limiting rotational travel of a column tube during telescoping adjustment using the spacer.

Abstract: A turning angle detecting device includes: a first storage unit configured to store a turning angle neutral point correction value being a difference between a median of the turning angles at respective limits in right and left steering and the turning angle in a straight traveling state; a second storage unit configured to store an initial position of a movable portion of an actuator of a wheel turning mechanism in the straight traveling state; a first turning angle calculating unit configured to calculate a first turning angle with respect to the median of the turning angles at the respective limits based on a detection value of a position of the movable portion; and a second turning angle calculating unit configured to calculate a second turning angle based on the detection value, the turning angle neutral point correction value, the initial position and the first turning angle.

Abstract: A frictional roller reducer having a sun roller; a ring roller; a plurality of intermediate rollers having rolling surfaces coming in rolling contact with the sun roller and the ring roller; the sun roller or the ring roller having a pair of roller elements including inclined surface portions on a circumferential surface coming in rolling with rolling surfaces, the inclined surface portions inclined in directions going toward the intermediate rollers in a radial direction as going away from each other in the axial direction; a pressing device pressing the pair of roller elements in directions going closer to each other, and an elastic member arranged between the pair of roller elements, the elastic member urging the pair of roller elements in directions going away from the rolling surface of the intermediate rollers.