Abstract: A fluid supply valve attachment device that includes: a fixing member formed with a recessed fitting section; and a fluid supply valve provided with a protruded insertion section that is inserted and fixed in the recessed fitting section. Clearance between a reference inner peripheral surface of the recessed fitting section and a reference outer peripheral surface of the protruded insertion section is set smaller than clearance between an internal thread of the recessed fitting section and an external thread of the protruded insertion section in a state that the protruded insertion section is inserted and fixed in the recessed fitting section.

Abstract: A component holding device includes: a fixing member that has a first inner wall surface that forms a first hole into which gas can be entered and a component can be inserted; a component holding section that is fit to the first hole of the fixing member and that holds the component; a sealing section that is provided in the first hole and that seals the component holding section to prevent water from entering into the first hole of the fixing member; and a vent path that is provided in at least one of the fixing member and the component holding section so as to communicate with a gas residual section in the component insertion hole and that discharges leaked gas in the gas residual section to outside air.

Abstract: A novel lubricant composition is provided, which is free from an increase in consistency, separation of its lubricant base oil, and leakage of the separated lubricant base oil from a speed reduction gear or the like even if a stress is repeatedly applied to the composition over a long period of time. A speed reduction gear employing the lubricant composition, and an electric power steering apparatus are also provided. The lubricant composition employs at least two types of thickeners including lithium stearate in combination, and has a worked penetration of not less than 355 (at 25° C.). The speed reduction gear 50 is filled with the lubricant composition containing minute particles, and the electric power steering apparatus includes the speed reduction gear.

Abstract: A press-fitting apparatus includes a first retaining jig having a required number of pin insertion holes into which generally longitudinally half portions of pins and interpieces can be inserted, a second retaining jig having a required number of pin insertion holes into which one end portions of the pins and interpieces can be inserted, and pressing jigs each for pressing the link into a predetermined position relative to the pins and interpieces. In the press-fitting of the links, the press-fitting operation is divided into two steps, and in each of the two steps, the links are stacked from central portions of the pins and interpieces.

Abstract: An electric power steering apparatus includes a steering assist section that applies assist force to a steering system of a vehicle to assist operation of a steering wheel performed by a driver. The steering assist section is actuated by a motor. When there is an abnormality in a steering torque sensor, the supply of drive power to the motor is controlled such that a converted steering angle, which is obtained by converting the rotational angle of the motor, follows a target steering angle, which is computed based on the steering angle of the steering wheel by operation performed by the driver.

Abstract: A truing apparatus for a grinding wheel is provided with a truing tool which is held so as to rotate, and the grinding wheel which is rotating is subjected to truing by the truing tool. The truing tool includes a peripheral surface truer having a truer surface formed on its rotating peripheral surface, and an end surface truer having a truer surface formed on its end surface in a direction of a rotation axis thereof. The rotation axis of the truing tool is arranged substantially perpendicularly to a rotation axis of the grinding wheel so that an end surface of the grinding wheel may be corrected with the peripheral surface truer, and a peripheral surface of the grinding wheel may be corrected with the end surface truer.

Abstract: A telescopic shaft (5) has an inner shaft (12) and a tubular outer shaft (13) that are fitted to each other so as to be relatively movable in an axial direction (X1) and to be able to transmit torque between each other. A row of a plurality of rolling bodies (14) is interposed between corresponding axial grooves (15, 16) of the inner shaft (12) and the outer shaft (13). A retaining member (17) moving together with the rolling bodies (14) while retaining the rolling bodies (14) has a facing portion (33) facing an end surface (121) of the inner shaft (12). As the telescopic shaft (5) telescopes in and out, the facing portion (33) comes into contact with the end surface (121) of the inner shaft (12), and this limits the movement of the rolling bodies (14) in the axial direction (X1).

Abstract: A rolling bearing assembly includes: an outer ring member; an inner ring member; a hub wheel formed with a flange at one axial end thereof; and a seal member for sealing a space between one axial end of the outer ring member and an inside surface of the flange, which axially opposes the one end of the outer ring member. The seal member includes: a cylindrical core fitted on the one axial end of the outer ring member and axially extended from the one end toward the flange; and an annular lip portion secured to the core and formed from an elastic material as axially extended from the core to the inside surface of the flange.

Abstract: A rolling bearing device of the invention has inner rings, an outer ring, and a sealing unit having a seal case fixed to the outer ring. The seal case is internally fitted to an annular corner formed between a shoulder inner peripheral surface of the outer ring, and a seal groove in a state where the diameter of a fixed portion is reduced elastically, and is fixed to the outer ring in a state where the annular corner and an outer peripheral surface of the fixed portion are in a line contact with each other.

Abstract: In a steering-without-driving state, a larger current limit value, drive limit time and steering angle deviation threshold value are set than when a low-speed driving state occurs. An automatic parking mode is held until a time period over which a state where a motor current value of an electric motor which drives a steering mechanism is equal to the current limit value reaches the drive limit time. Even though the state where the motor current value is equal to the current limit value has continued over the drive limit time, the automatic parking mode is held during the steering angle deviation not exceeding the steering angle deviation threshold value. When the state where the motor current value is equal to the current limit value has continued over the drive limit time Ta and that the steering angle deviation exceeds the threshold value, the automatic parking control is cancelled.

Abstract: A motor rotor has a rotor yoke having a polygonal column structure, a plurality of magnet fixing sections formed on the lateral surface of the rotor yoke, segment magnets respectively fixed to the magnet fixing sections and extending in the axial direction of the rotor yoke, and projections provided on the rotor yoke and protruding outward from the rotor yoke, the projections being provided at each boundary section located between each of the adjacent magnet fixing sections and being provided in pairs in the axial direction of the rotor yoke.

Abstract: A steering control apparatus includes a direct current power source, a three-phase alternating current motor, and a motor driving circuit. An emergency switching element is provided on at least two phases of a three-phase power supply line connected to the three-phase alternating current motor within the motor driving circuit, and the emergency switching element is turned off when an abnormality occurs such that the motor driving circuit is disconnected from the three-phase alternating current motor. The emergency switching element is a MOSFET, and the MOSFETs are provided in pairs in each of the two phases of the three-phase power supply line. Further, parasitic diodes of the pairs of MOSFETs are disposed in opposite orientations to each other.

Abstract: A motor vehicle steering shaft (3) is provided with: an inner shaft (11) and a tubular outer shaft (10) fitted into each other and to transmit a torque to and from each other; a rigid coupling element (25) for rigidly coupling the inner shaft (11) and the outer shaft (10) in a circumferential direction (C) of the inner shaft (11) when a relative rotation amount of the inner shaft (11) and the outer shaft (10) exceeds a predetermined range; and an elastic coupling element (36) for elastically coupling the inner shaft (11) and the outer shaft (10) in the circumferential direction (C) of the inner shaft (11) when the relative rotation amount of the inner shaft (11) and the outer shaft (10) is within the predetermined range. The elastic coupling element (36) includes a resin member (36). The inner shaft (11) and the outer shaft (10) are elastically supported mutually via the resin member (36) at a central position of the predetermined range when no torque is loaded to the steering shaft (3).

Abstract: A disc-like grinding wheel 5 is formed with a circumferential groove 5a, the opposite walls of which define grinding surfaces 5b. A rotated carrier 3 brings a load pin 55 into rotary movement relative to the grinding wheel 5 rotated about an axis 5z, so as to pass the load pin 55 through space between the grinding surfaces 5b, whereby opposite end faces 55a of the load pin 55 are ground simultaneously. Thus, time taken by a grinding process may be reduced as compared with a conventional method wherein one end face is ground at a time.

Abstract: A brake application speed is compared with a speed threshold value so as to judge whether or not a braking operation being performed is an emergency braking operation. If not the emergency braking operation, an automatic parking mode is held. When the emergency braking operation is in effect, control information related to a state of an automatic parking control then is stored in a control information storage section, and the automatic parking control is cancelled. Thereafter, when a steering operation or a gearshift operation is performed before a cancellation of application of the brake is detected, the process is ended, and the control mode is held in an assist mode. When the application of the brake is cancelled with neither the steering operation nor the gearshift operation performed, the control information is read in so as to resume the automatic parking control.

Abstract: In a controller for an electric power steering apparatus, a target value calculation element, which calculates target values of the drive currents of a motor on the basis of a detected value of the steering torque, is constituted by a first integrated circuit provided in a chip. A drive signal value calculation element, which calculates drive signal values for driving the motor on the basis of the target values calculated by the target value calculation element, detected values of the drive currents of the motor, and a detected value of the rotary position of a rotor of the motor, is constituted by a second integrated circuit provided in another chip from the chip. A driving element drives the motor in accordance with the drive signal values. The first integrated circuit is connected communicably to the second integrated circuit. The calculation cycle of the drive signal values is set to be shorter than the calculation cycle of the target values.

Abstract: Conducting layers and resin-made insulating layers are alternately laminated to form a laminated circuit portion, and a metal substrate is installed so as to be in contact with an insulating layer, which is the lowermost layer. The conducting layers, the insulating layers, and the metal substrate are thermal compression bonded. In order to connect the uppermost conducting layer on which electronic component is placed with the lowermost insulating layer, a conducting layer is formed on the inner surface by copper plating to install a heat dissipating via into which a resin is filled. A conducting layer, which is the uppermost layer, is subjected to gold plating, with nickel plating undercoated. An electronic component for driving a motor is placed on the uppermost conducting layer, by which the metal substrate can be used as a motor drive circuit substrate for an electric power steering system.

Abstract: In a wheel bearing assembly, the length of an annular protrusion in an axis direction, or the oscillation angle through which the center axis of a calk jig is oscillatingly turned relative to the center axis of a constant-velocity joint outer ring is restricted so that the annular protrusion and the calk jig do not interfere with each other when the constant-velocity joint outer ring is calk-fixed to the calk fixation portion of the wheel hub by radially outwardly bending a tubular protrusion formed on an end surface of the center shaft portion through the oscillating turn of the calk jig after the center shaft portion of the constant-velocity joint outer ring has been fitted to the hollow hole of the wheel hub.

Abstract: In a main spindle device provided with a housing and a main spindle, a labyrinth-forming annular groove is formed, in the circumferential direction of the main spindle, on the outer circumferential surface of a protruding portion of the spindle that protrudes from the housing on the front side. A housing lid member having a protruding portion that is inserted into the labyrinth-forming annular groove so as not to contact an inside surface of the labyrinth-forming annular groove all around the periphery is fixed to the housing on the front side thereof and forms a labyrinth seal portion between the protruding portion and the labyrinth-forming annular groove. The housing lid member is constructed so that the housing lid member can be divided into at least two pieces with respect to the circumference of the labyrinth-forming annular groove.

Abstract: Prior to engaging a male screw formed on the outer circumference of a second member with a female screw formed on the inner circumference of a hole in a first member, protruding parts which protrude outward in the radial direction and are positioned at one end side of the male screw in the axial direction are formed in a plurality of regions which are separated from each other in the circumferential direction on the outer circumference of the second member on which the male screw is formed. The male screw is then engaged with the female screw from the other end side of the male screw in the axial direction. The torque required to rotate the male screw engaged with the female screw in the loosening direction is set so as to be greater in a state where the protruding parts are interposed between the male screw and the female screw than in a state where the protruding parts are not so interposed.