Abstract: A first aspect of the present invention is carbon fiber wherein the surface of a monofilament has a center line average roughness Ra of 6.0 nm or more and 13 nm or less, and the monofilament has a long diameter/short diameter ratio of 1.11 or more and 1.245 or less. A second aspect of the present invention is carbon fiber precursor acrylic fiber wherein the surface of a monofilament has a center line average roughness Ra of 18 nm or more and 27 nm or less, and the monofilament has a long diameter/short diameter ratio of 1.11 or more and 1.245 or less. The carbon fiber according to the first aspect is obtained by stabilizing and carbonizing under specific conditions the carbon fiber precursor acrylic fiber according to the second aspect.

Abstract: A control unit comprises a first power source line connecting a vehicle power source and a motor, a second power source line connecting the vehicle power source and a plurality of electromagnetic valves, a solenoid relay arranged in a second power source line, a link line connecting a portion of the second power source line, which extends between the solenoid relay and the plurality of electromagnetic valves, to the first power source line, and a link relay arranged in the link line.

Abstract: It is made possible to give prevailing torque to an adjustment bolt in a simple manner without troublesome adjustment work.

Abstract: An object of the present invention is to provide an anti-loosening device that exhibits its anti-loosening effect by means of an eccentric fit between a protrusion 12 of a nut 10 and a recess 22 in a nut 20, wherein the inclination of the nut 20 relative to the nut 10 when they have been tightened is minimized. The outer peripheral surface of the protrusion 12 and the inner peripheral surface of the recess 22 are constructed in such a manner that, with the nuts screwed to a threaded shaft S and an eccentric fit established between the protrusion 12 of the nut 10 and the recess 22 in the nut 20, the tapered outer peripheral surface portion 12a of the protrusion 12 interferes with the tapered inner peripheral surface portion 22a of the recess 22 along part of the circumference while a gap is formed between the distal-end outer peripheral surface portion 12b of the protrusion 12 and the closer-to-bottom inner peripheral surface portion 22b of the recess 22 along the entire circumference.

Abstract: A vehicle control apparatus includes a first ECU electrically connected to a wheel speed sensor and a second ECU electrically connected to the wheel speed sensor.

Abstract: A novel screw-fastening assembly having anti-loosening capabilities includes a first and a second screw elements 11,12 adapted to be screw-fastened; the element 12 includes a recess R, the recess being open toward the element 11; and the element 11 includes an protrusion P, the protrusion being introduced into the recess R in a fastened state. The recess R has an inner peripheral surface formed in a cylindrical shape that is straight along the axial direction. The protrusion P is shaped as a circular column or cylinder having a maximum-diameter portion at one location along the axial direction. The protrusion P and the recess R are eccentric relative to each other such that the maximum-diameter portion of the protrusion and the inner peripheral surface of the recess are in pressure contact only along part of their circumference in the fastened state.

Abstract: A pivot-mounting device has a lower nut (4) is fixing a bolt (2) to an object (A), and an upper nut (3) having a boss (32) rotatably supporting a rotatable member (B) is tightened on the bolt (2). A lower nut (4) includes an engagement recess (41) into which the boss (32) can be fitted with the outer peripheral surface of the boss (32) and the inner peripheral surface of the engagement recess (41) each being a straight cylinder shape. The boss outer peripheral surface (32) is slightly eccentric relative to a female thread hole (3a).

Abstract: A control unit comprises a first power source line connecting a vehicle power source and a motor, a second power source line connecting the vehicle power source and a plurality of electromagnetic valves, a solenoid relay arranged in a second power source line, a link line connecting a portion of the second power source line, which extends between the solenoid relay and the plurality of electromagnetic valves, to the first power source line, and a link relay arranged in the link line.

Abstract: A member with threads is provided that is made of a carbon-fiber-reinforced composite material with improved strength. Carbon fibers each extending in the axial direction across at least two threads appearing in a longitudinal cross section are embedded in the at least two threads in a zigzag manner along the surface shape of the at least two threads appearing in a longitudinal cross section. Preferably, the member is a nut, where the above-described structure is embedded in the threads of the female threadform of the nut, thereby providing a nut that is lightweight and exhibits improved strength.

Abstract: There is provided an implant having a slack prevention function by an eccentric fitting structure. An engaging shaft 53, which is decentered with a screw shaft 52, is provided at the end of an abutment screw 5, and is engaged with an engaging hole 45 provided in the bottom of a screw hole 44, into which an abutment screw 5 is screwed, and thus, the screw shaft 52 is inclined to and eccentric from the screw hole 44. Thereby, the screw shaft 52 comes to be strongly pressed partially in a circumferential direction toward the screw hole 44, so that internal stress in the horizontal direction is accumulated on the screw shaft 52. The screw 5 is threaded with maintaining prevailing torque caused by the internal stress, which enables the screw 5 to be fastened to the right position.

Abstract: It is made possible to give prevailing torque to an adjustment bolt in a simple manner without troublesome adjustment work.

Abstract: A novel pivot-mounting device is provided that can accommodate various thicknesses of rotatable members and facilitate repeated attachment and detachment and that can prevent loosening due to vibration. A lower nut (4) is used to fix a bolt (2) to an object to which a member is to be attached (A), and then an upper nut (3) having a boss (32) that rotatably supports the rotatable member (B) is tightened on the bolt (2). The lower nut (4) includes an engagement recess (41) into which the boss (32) can be fitted; the outer peripheral surface of the boss (32) and the inner peripheral surface of the engagement recess (41) are each formed into a straight cylinder shape; and the outer peripheral surface of the boss (32) is slightly eccentric relative to the female thread hole (3a) such that the boss (32) engages the engagement recess (41) to produce, in both nuts (3, 4), pressing forces in a direction perpendicular to the axis.

Abstract: There is provided an implant having a slack prevention function by an eccentric fitting structure. An engaging shaft 53, which is decentered with a screw shaft 52, is provided at the end of an abutment screw 5, and is engaged with an engaging hole 45 provided in the bottom of a screw hole 44, into which an abutment screw 5 is screwed, and thus, the screw shaft 52 is inclined to and eccentric from the screw hole 44. Thereby, the screw shaft 52 comes to be strongly pressed partially in a circumferential direction toward the screw hole 44, so that internal stress in the horizontal direction is accumulated on the screw shaft 52. The screw 5 is threaded with maintaining prevailing torque caused by the internal stress, which enables the screw 5 to be fastened to the right position.

Abstract: In circuit abnormality determining apparatus and method applicable to a brake control apparatus, an abnormality determining section determines at least one of an abnormality location of the electric circuit and an abnormality kind of the electric circuit on a basis of monitoring results of a current state in the electric circuit detected by a current detection section, a voltage state of the electric circuit detected by a open circuit detection section, and a power supply voltage.

Abstract: A brake control apparatus includes an actuator configured to generate a braking force of road wheel; a first control unit configured to calculate a target braking controlled variable in accordance with an amount of brake manipulation of a driver; and a second control unit including a backup calculation section configured to calculate a backup target braking controlled variable, by receiving the amount of brake manipulation separately from the first control unit. The second control unit selects one of the target braking controlled variable and the backup target braking controlled variable in accordance with operating conditions of the first control unit and the second control unit. The second control unit outputs a drive signal to the actuator so as to bring the braking force of road wheel closer to the selected one of the target braking controlled variable and the backup target braking controlled variable.

Abstract: A brake control system includes a plurality of fluid channels communicating from a hydraulic pressure source to a reservoir for controlling brake hydraulic pressures supplied to respective brake calipers by a plurality of hydraulic pressure control valves arranged in the respective fluid channels, wherein valve drive circuits for controlling the hydraulic pressure control valves are provided, two power relays for supplying power are connected to the plurality of valve drive circuits and when all hydraulic pressure control valves arranged in one fluid channel are normally open valves which communicate the hydraulic pressure source to the reservoir when nonenergized, different power relays are used for at least two valve drive circuits in the valve drive circuit corresponding to all the hydraulic pressure control valves to thereby prevent a malfunction of one power relay from causing all brake hydraulic pressures to fall.

Abstract: An anti-loosening bolt assembly having a setscrew with an external screw on its outer periphery, a lock bolt having an external screw with the same pitch as the screw of the setscrew, and an axial end which is engaged with an axial base of the setscrew. One of the axial base of the setscrew and axial end of the lock bolt has a conical protrusion part, with the other having a first concave part, with which the protrusion part is engaged. An outer peripheral surface of the protrusion part and an inner peripheral surface of the first concave part are slightly eccentric.

Abstract: A brake control apparatus includes a master cylinder, a wheel cylinder that is provided for a vehicle wheel, a hydraulic actuator that is provided separately from the master cylinder and adjusts a hydraulic pressure of the wheel cylinder, a control unit that controls the hydraulic actuator on the basis of a brake operating amount by a driver. The control unit has a main unit that performs the computation of a target hydraulic pressure of the wheel cylinder and a sub unit that drives the hydraulic actuator based on the target hydraulic pressure computed by the main unit.

Abstract: An anti-loosening nut assembly is composed of an upper nut 3 and a lower nut 2 that engage with each other in an eccentric manner to afford the so-called ‘wedging’ effect of surely inhibiting them from loosening themselves. The upper nut 3 has one or more lateral lugs to be brought into contact with the lower end of a fastening tool such as a spanner. The lug or lugs 3b protrudes or protrude from the outer peripheral portion or portions of the upper nut 3 for the purpose of visual detection of rotation angle of this nut.

Abstract: An anti-loosening nut assembly is composed of an upper nut 3 and a lower nut 2 that engage with each other in an eccentric manner to afford the so-called ‘wedging’ effect of surely inhibiting them from loosening themselves. The upper nut 3 has one or more lateral lugs to be brought into contact with the lower end of a fastening tool such as a spanner. The lug or lugs 3b protrudes or protrude from the outer peripheral portion or portions of the upper nut 3 for the purpose of visual detection of rotation angle of this nut.