JTEKT Patente

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Provided is a steering apparatus that reduces variations in impact absorbing load caused by differences in a telescopic adjustment position. A first sliding member (40) is held by an upper jacket (7). A second sliding member (50) includes a fixed portion (51) fixed to the first sliding member (40), and an extension portion (52) that extends in a column axis direction (X) and that has a coupled portion (52P) coupled to the fixed portion (51) at a predetermined location in the column axis direction (X). The second sliding member (50) being clamped by the clamping mechanism (18) slides relative to a supporting member (17) and a lower jacket (8) during a secondary impact. The second sliding member (50) includes a slit (54) that reduces coupling stiffness between the fixed portion (51) and the coupled portion (52P) of the extension portion (52) so as to facilitate, in a clamping state of the clamping mechanism (18), deflection of the coupled portion (52P) of the extension portion (52) relative to the fixed portion (51) in a lateral direction as seen from the column axis direction (X).

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A left steering ECU includes a switching control unit that switches a control mode between a first control mode and a second control mode. The first control mode is a mode in which the left steering ECU controls a left steering motor so that the steered angle of a left steered wheel becomes equal to a left target steered angle received from a higher-level control device. The second control mode is a mode in which the left steering ECU controls the left steering motor by torque feedback control so that the steered angle of the left steered wheel becomes equal to an angle corresponding to a neutral position of the left steered wheel. The switching control unit normally sets the control mode to the first control mode. The switching control unit switches the control mode to the second control mode if abnormal communication occurs between the higher-level control device and the left steering ECU.

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A steering control device has a steering actuator as an operation target, the steering actuator includes a motor and a steering mechanism mechanically connected to a rotary shaft of the motor. The steering control device includes a controller (62) configured to perform i) a low-temperature process of changing a torque of the motor when an estimated value (Tge) estimated from a temperature of a lubrication target part of the steering mechanism is equal to or lower than a predetermined value with respect to when the estimated value (Tge) is higher than the predetermined value and ii) an estimation process of calculating the estimated value (Tge) which is set be lower than a detected value (Tbc) of a temperature sensor (68) detecting a temperature of a predetermined member attached to the steering mechanism based on a heat emission parameter of the steering actuator associated with a current flow with the detected value (Tbc) as an input.

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A vehicle controller configured to accurately determine a driver's intention to intervene in steering is provided. An ECU (40) includes a deviation calculating circuit (41), an assist control circuit (60), an automatic steering control circuit (70) including an intervention determination switching circuit (72), an adder (42), a current command value calculating circuit (43), and a motor control signal calculating circuit (44). The intervention determination switching circuit (72) includes a count amount calculating circuit (82), an adder (83), an immediately-preceding count amount output circuit (85), a switching determination circuit (86), and an output switching circuit (87). The count amount calculating circuit (82) calculates a count amount (C) having a positive value or a negative value based on a steering torque absolute value (|Th|) calculated by an absolute value switching circuit (81). The adder (83) calculates a total count amount (Ca) that is the total sum of a presently calculated count amount (C) and an immediately-preceding count amount (Co) calculated in an immediately-preceding calculation cycle. The switching determination circuit (86) determines a driver's intention to intervene in steering, based on whether the total count amount (Ca) is equal to or greater than a count amount threshold value (Tc).

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In a self-aligning roller bearing, in a longitudinal section including a center line of a spherical roller and an axis of the self-aligning roller bearing, a clearance X between an outer end surface of a spherical roller on an axially outer side of the self-aligning roller bearing and a rib portion, and a clearance Y between an inner end surface of the spherical roller on an axially inner side of the self-aligning roller bearing and a guide ring have a relation of X < Y.

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Provided is a lithium ion capacitor that can retain a capacity under a high temperature environment and has small increase in internal resistance while using an aqueous binder for a positive electrode. A lithium ion capacitor includes: a positive electrode; a negative electrode; and an electrolytic solution contacting the positive electrode and the negative electrode. The electrolytic solution includes an organic solvent and a lithium salt electrolyte having an imide structure; the positive electrode includes a collector foil and a positive electrode active material; and the positive electrode active material is held onto the collector foil through a binder including a polymer having a RED value to the electrolytic solution of more than 1, the RED value representing a relative energy difference with respect to the electrolytic solution based on Hansen solubility parameters.

In a worm reducer, an elastic member urges a worm shaft housed in a housing toward a worm wheel. In a method for manufacturing the worm reducer, the elastic member is arranged in a recess formed on the inner face of the housing. Then, a jig is inserted into the housing, and the elastic member is compressed by the jig. In the state in which the elastic member is compressed by the jig, the worm shaft is inserted into the housing. Then, the jig is removed from the housing.

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An outer lubricating liquid inflow passage that provides communication between an outside of a liquid-lubricated bearing and a rolling element arrangement chamber is formed between an outer ring and a cage, on the lubricating liquid inflow side. The outer lubricating liquid inflow passage has an annular axially extending outer passage portion that extends in the axial direction, and an annular radially extending outer passage portion. The radially extending outer passage portion communicates with a rolling element-side axial end portion of the axially extending outer passage portion. The radially extending outer passage portion extends from the axially extending outer passage portion to the rolling element arrangement chamber inward in the radial direction of the outer ring. A labyrinth is formed by the axially extending outer passage portion and the radially extending outer passage portion.

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A wiring harness fixing structure (20) includes a holding member (78) that is formed into a trough shape with an opening (82) provided on one face and is configured to hold a part or all of a wiring harness (76), and an attachment fitting (80) configured to attach and fix the holding member (78) to a housing (40) of an electric power steering. The holding member (78) is attached and fixed to the housing (40) by using the attachment fitting (80) so that the opening (82) is oriented to the outer face of the housing (40).

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