JTEKT Patente

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A support shaft (50) includes a first supported portion (50a) and a second supported portion (50b) supported by respective support holes (38) of a pair of fastened portions (19). The support shaft (50) includes a large-diameter portion (51) including the first supported portion (50a), a small-diameter portion (52) including the second supported portion (50b) and having a diameter smaller than the large-diameter portion (51), and a stepped portion (53) formed between the large-diameter portion (51) and the small-diameter portion (52). The small-diameter portion (52) includes a tapered portion (54) provided in the small-diameter portion (52) so as to be adjacent to the stepped portion (53) and having a diameter gradually decreasing toward the stepped portion (53), a first to-be-broken portion (H1) placed in a smallest-diameter portion (54a) of the tapered portion (54) so as to be broken at a time of a secondary collision, and a second to-be-broken portion (H2) placed adjacent to the second supported portion (50b) so as to be broken at the time of the secondary collision.

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A steering control device capable of transmitting a road surface state to a driver as a steering reaction force more appropriately is provided. An ideal vehicle model (72) computes first spring reaction force torque (T sp1 * ) based on a target pinion angle (¸ p * ) and second spring reaction force torque (T sp2 * ) based on at least lateral acceleration (LA) as components of a spring component (T sp * ) of a steering assist force. The ideal vehicle model (72) combines the first and second spring reaction force torques (T sp1 * ) and (T sp2 * ) with specified proportions of use to compute the spring component (T sp * ). The ideal vehicle model (72) decides the proportions of use of the first and second spring reaction force torques (T sp1 * ) and (T sp2 * ) on the basis of a distribution gain (G ´sp ) set in accordance with the difference value between the first and second spring reaction force torques (T sp1 * ) and (T sp2 * ). The ideal vehicle model (72) increases the proportion of use of the second spring reaction force torque (T sp2 * ) as the difference value between the first and second spring reaction force torques (T sp1 * ) and (T sp2 * ) is increased.

A steering control system that maintains the follow-up accuracy with which a steering angle follows a steering angle command value is provided. An assist command value calculation circuit (43) calculates a first assist component (Ta1*) based on a value obtained by adding together a basic assist controlled variable (Tas*) and a system stabilization controlled variable (Tdt*). The assist command value calculation circuit (43) includes a pinion angle feedback control circuit (60) that calculates a second assist component (Ta2*) by executing angle feedback control based on a deviation between a pinion angle (¸p) and a final pinion angle command value that is the sum of a pinion angle command value and an ADAS command angle (¸a*). The assist command value calculation circuit (43) outputs an assist command value (Ta*) based on the first assist component (Ta1*) and the second assist component (Ta2*). The assist command value calculation circuit (43) receives a steering torque (Th) obtained after the influence of viscosity and inertia is reduced by a steering torque compensation circuit (80).

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A vehicle control device 30 includes a drive motor 11 and an engaging/disengaging mechanism 40 having a function to permit and cut off torque transmission between the drive motor 11 and wheels 15. The vehicle control device 30 further includes a smoothing capacitor 33 that smoothes electric power applied from a secondary battery 6, a drive circuit 32 for the drive motor 11, a drive circuit 36 for the engaging/disengaging mechanism 40, and a microprocessor 31 for controlling each drive circuit. If it is determined that a collision of a vehicle has occurred, the microprocessor 31 disconnects each drive circuit from the secondary battery 6, and outputs a command to disengage the engaging/disengaging mechanism 40.

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Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

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A method of manufacturing a bar member 22 including a pipe 10 and metal members 17, 18 includes: a step of forming a core member including a metal ring 16 having an outer peripheral face 16A subjected to face roughening and a mandrel; a step of winding glass fibers 50 around the outer peripheral face 16A; a step of winding a carbon fiber prepreg 26 around the core member; a step of forming the pipe 10 externally fitted and fixed to the outer peripheral face 16A by baking and curing the carbon fiber prepreg 26; a step of pulling the mandrel out of the pipe 10; and a step of screwing together the metal members 17, 18 and the metal ring 16.

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A first holder member 40 includes a first holder base 42, and first holder side walls 44 each protruding from the first holder base 42. The first holder base 42 includes a first holder principal surface 42a facing a substrate 62. Each first holder side wall 44 is a thin plate member protruding from the first holder principal surface 42a toward a second holder member 50. The first holder side walls 44 are provided on both sides of the first holder base 42 in a width direction W of the substrate 62. The first holder side walls 44 are inclined inward in the width direction W and in contact with the second holder member 50. The first holder side walls 44 include first holder side wall outer surfaces 44a. A case 20 is in contact with the first holder side wall outer surfaces 44a.

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