Abstract: An end in an axial direction of a cage includes a first end face located so as to surround a pocket, a plurality of claw-shaped protrusions that protrude from a periphery of the pocket in a first end face outward in an axial direction and toward a center of the pocket and extend along the periphery at intervals, and a second end face that is connected to an end of the first end face, which is located on the opposite side of the first end face from the pocket side, via a step and is located further outward in the axial direction than the first end face. A recess is defined by the claw-shaped protrusions, the first end face, and the step.

Abstract: A cylindrical cutting tool for processing splines formed on an outer circumference of a shaft member to extend in an axial direction includes blade portions which are formed in a spline shape on an inner circumference. The blade portions include: a first blade portion which is formed in a terminal end portion in a first direction along the axial direction and which is directed substantially toward the first direction; and a second blade portion which is formed in a terminal end portion in a second direction along the axial direction and opposite to the first direction and which is directed substantially toward the second direction.

Abstract: A power transmission coupling that couples an output shaft of an electric motor and a worm shaft together includes a first rotation element coupled to the output shaft, a second rotation element coupled to the worm shaft, and an intermediate element formed of an elastic body and interposed between the first rotation element and the second rotation element. The intermediate element forms a unit integrally including an annular support portion, power transmission portions extending radially from the support portion and interposed between engaging protrusions of the first rotation element and the second rotation element, a spacer arranged inward of the support portion in a radial direction to apply a preload to the worm shaft in an axial direction, and a coupling portion that couples the support portion and the spacer together.

Abstract: A rotation transmission device includes a one-way clutch which is provided between an output shaft of a speed increaser and an input shaft of a generator, which makes a connection between the output shaft and the input shaft to be rotatable integrally in a state in which a rotation speed of the output shaft is higher than that of the input shaft, and which cuts off the connection between the output shaft and the input shaft in a state in which the rotation speed of the output shaft is lower than that of the input shaft. The rotation transmission device further includes: a measurement section which measures a state of the one-way clutch which changes depending on a load exerted to the one-way clutch; and an acquisition section which acquires the load exerted to the one-way clutch on a basis of a measurement result of the measurement section.

Abstract: A steering column device is provided with a pair of suspension shafts which connects a first plate of a fixed bracket and a second plate of a movable bracket, thereby suspending a movable jacket through the movable bracket. A pair of first holes, each of which is an elongated hole, into which the pair of suspension shafts is inserted, is formed in the first plate. A connection and separation mechanism which separates, at the time of a secondary collision, the second plate from a predetermined position of the first plate in a column movement direction includes a resin pin disposed only between the pair of first holes in relation to a direction orthogonal to the column movement direction.

Abstract: A split cage includes a plurality of cage segments each having a pair of rim portions and a pair of cage bar portions, the cage bar portions and the rim portions defining a single pocket that accommodates a single tapered roller. Turning of each of the cage segments is guided by the tapered roller, the cage segments being arranged in a circular pattern along the circumferential direction of the split cage, in an annular space between inner and outer rings. Each cage segment has projections formed so as to project radially inward and formed at the rim portions. A projecting length of each projection is set to such a length that the projection is brought into contact with an outer peripheral side portion of the inner ring when the cage segment starts rotating.

Abstract: Motor control command output means outputs, as a motor control command, a second command value, which is calculated by second command value calculating means on the basis of a first command value generated by first command value calculating means and a current value obtained by causing motor driving system current adding means to add together currents of respective motor driving systems, to the motor driving systems of two systems constituted by a motor and drive circuits for driving the motor. The second command value calculating means may calculate the second command value by performing a d/q coordinate system current feedback calculation using the current value.

Abstract: In a steering device, a restriction member urged by an urging member restricts rotation of an inner tube when the restriction member is at an inserted position at which the restriction member is inserted into a second opening of the inner tube through a first opening of an outer tube. When the inner tube moves to contract a steering column upon a secondary collision, a driving edge portion of the second opening drives the restriction member to a position at which the restriction member is retracted from the second opening against the urging member.

Abstract: A bearing ring for a strain wave gearing includes an inner ring that is rotatable together with an elliptic cam and elastically deformable, an outer ring that is rotatable together with a flex spline and elastically deformable, a plurality of balls provided between the inner ring and the outer ring, and a cage with a plurality of pockets which is arranged in a circumferential direction and in which the balls are housed. The cage has a ring portion and a plurality of cage bars extending from the ring portion in the axial direction. The pockets are each located between the cage bars adjacent to each other in the circumferential direction. A circumferential clearance between the ball and the cage bar is equal to or larger than a radial clearance of an outer annular space between the outer ring deformed into a non-circular shape and the cage.

Abstract: A motor unit is provided which shortens an information transmission path between a detector and an arithmetic board. The motor unit includes a motor and a motor controller controlling a rotating operation of the motor based on a rotating angle of the motor such that the motor and the motor controller form a unit. The motor controller includes a resolver detecting a voltage signal corresponding to the rotating operation of the motor. The resolver outputs the voltage signal corresponding to the rotating operation of the motor, to a control board. The resolver is interposed between the motor and the control board and detects a rotating angle of a shaft end of a motor shaft extending beyond an operation performing apparatus that performs an operation of supplying driving power to the motor, to a position closer to the control board.

Abstract: A motor includes a motor housing, a motor body, and a damping member. The motor body includes a drive shaft. The motor body is housed in the motor housing. The damping member is disposed on an outer surface of the motor housing. The damping member includes a damping layer and a constraining layer. The damping layer is made of an organic polymeric material, and bonded to the outer surface of the motor housing. The constraining layer is made of at least one of a resin mixed with an inorganic compound and an elastomer mixed with an inorganic compound. The constraining layer is disposed on the damping layer.

Abstract: A method for adjusting a steering system and an adjustment apparatus for a steering system are provided which allow a clearance between a support yoke and a yoke plug to be appropriately set. When a yoke plug is loosened which has been temporarily fastened to a degree that a support yoke is subjected to elastic compressive deformation, the yoke plug is loosened to a position where a clearance C between the support yoke and the yoke plug reaches a target clearance using, as a reference, a position where a rate of a change in an axial position of the yoke plug with respect to an angular position of the yoke plug increases rapidly.

Abstract: An inner ring has a rib face as a concave surface that is formed on the larger diameter side of an inner ring and that contacts large end faces of tapered rollers. A tapered roller bearing satisfies Ri>R?Rr, where Rr represents a curvature radius of the large end face, Ri represents a curvature radius of the rib face 8 in a longitudinal section of the inner ring 2, R represents a distance from a cone center to a reference point. The distance R is the distance from the cone center to the reference point, where the reference point is the intersection of the rib face and an imaginary line extending from the cone center and along an inner ring raceway surface in the longitudinal section of the inner ring 2. Surface roughness of the rib face is greater than that of the large end face.

Abstract: A telescopic shaft includes: an inner shaft where a pair of recessed grooves that face each other in a direction perpendicular to an axis and extend in an axial direction are formed; an outer shaft where a pair of recessed grooves that face each other in the direction perpendicular to the axis and extend in the axial direction are formed; a plurality of rolling bodies that are disposed between each of the recessed grooves and the corresponding recessed groove so as to form a line in the axial direction; a pair of stoppers; and a buffer body unit. Each of the stoppers restricts falling of a rolling body at an end portion of the corresponding line from the corresponding recessed groove of the inner shaft. The buffer body unit integrally includes a pair of buffer bodies, and a connection portion that connects the pair of buffer bodies.

Abstract: A telescopic shaft includes an inner shaft, an outer shaft, a plurality of rolling bodies that are disposed between recessed grooves of the inner shaft and the outer shaft and form a line in an axial direction, a stopper, and a buffer body. The stopper restricts falling of the rolling bodies from the recessed groove of the inner shaft. The buffer body is interposed between the stopper and a rolling body at an end portion of the line. An end surface of the buffer body includes an inclined abutment portion that is inclined with respect to a plane perpendicular to an axis of the inner shaft. The abutment portion abuts against the rolling body at the end portion of the line at a stroke end of the inner shaft with respect to the outer shaft.

Abstract: A steering control apparatus is provided which enables, when the absolute value of a tire angle increases, suppression of a force that is applied to a steering system and that acts to increase the absolute value of the tire angle. A dq transformation circuit uses a control angle to transform currents flowing through a motor into currents id and iq on a d axis and a q axis. Current feedback control circuits calculate command voltages as manipulative values that are used to feed the currents id and iq back to command currents id* and iq*, respectively. A uvw transformation circuit transforms the command voltages into three-phase command voltages. An angle manipulation processing circuit fixes the control angle when a rotation angle is updated if the absolute value of the tire angle is equal to or larger than a prescribed value.

Abstract: A variable-throttle hydrostatic bearing includes a diaphragm that faces a protruding portion via a predetermined gap and a discharge port formed in the protruding portion so as to communicate with a hydrostatic pocket, and adjusts a throttle amount based on the size of a gap between the diaphragm and the protruding portion. The variable-throttle hydrostatic bearing further includes a piston that contacts, at its first end, a surface on the opposite side of the diaphragm from a surface that faces the protruding portion, a cylinder that holds the piston such that the piston is slidable and forms a fluid chamber along with the piston, and a coil spring housed in the fluid chamber to press a second end of the piston.

Abstract: A swinging joint device includes: a driving shaft member; a first swinging arm that is swingably supported about the driving shaft member; a driven shaft member that is arranged parallel to the driving shaft member; an interlocking swinging member that swings about the driven shaft member in an interlocking manner with swinging of the first swinging arm; an elastic body that is connected to the interlocking swinging member to generate an urging force in a direction opposite to an interlocking swinging direction of the interlocking swinging member; a rigidity variable portion that varies rigidity of the elastic body seen from the interlocking swinging member; a first angle detection portion that detects a swinging angle; and a control portion that controls the rigidity variable portion according to the swinging angle detected by the first angle detection portion to adjust the rigidity of the elastic body seen from the interlocking swinging member.

Abstract: A steering device includes: a steering shaft a column jacket that are telescopically adjustable in an axial direction; a lock plate provided with a plurality of holes and a plurality of partition portions arranged in the axial direction; and a tooth that advances to and retreats from the lock plate, and that is engaged with one of the holes of the lock plate. The steering shaft includes a first end to which a steering member is mounted and a second end. The partition portions are provided such that a height of a first end-side partition portion in a direction toward the tooth retreated from the lock plate is greater than that of a second end-side partition portion positioned on a second end side of the first end-side partition portion.

Abstract: A steering device includes a steering column capable of a telescopic adjustment, a support bracket provided with an insertion hole, a movable tooth member fitted into the insertion hole with play in an axial direction, and a stationary tooth member arranged so as to face the movable tooth member. The movable tooth member has a first tooth, and is elastically displaceable to both sides in the axial direction from a predetermined neutral position. The stationary tooth member with a second tooth engageable with the first tooth is moved in a lateral direction to be brought into contact with the movable tooth member and to be separated therefrom. As a result, the second tooth is allowed to engage with the first tooth, and engagement between the first tooth and the second tooth is released.