Patent application number | Description | Published |
20090021091 | MOTOR DRIVE APPARATUS AND ITS INSPECTION METHOD - A motor drive apparatus includes a motor unit including an output shaft and a first terminal connecting portion; a control board including a second terminal connecting portion, and configured to control a current supply to the motor unit; a housing; a shaft supporting portion supporting the output shaft; and a plurality of relay terminals electrically connecting the first terminal connecting portion with the second terminal connecting portion. The housing includes a motor-unit receiving portion receiving the motor unit, and a board receiving portion formed integrally with the motor-unit receiving portion. The motor-unit receiving portion is formed with an opening on one side of the motor-unit receiving portion in an axial direction of the motor unit and includes a wall portion on another side of the motor-unit receiving portion in the axial direction. The wall portion is formed with a through-hole. The board receiving portion is formed with an opening in the axial direction to receive the control board. The plurality of relay terminals are provided via the through-hole of the wall portion. | 01-22-2009 |
20090057050 | STEERING APPARATUS - A steering apparatus includes an axle housing rotatably supporting a wheel hub on which a steered road wheel is installed, and a lower suspension-system control arm adapted to be oscillatingly supported at one end on a vehicle body and having a turning portion provided at the other end for pivotably supporting the axle housing by the turning portion. An electric motor is installed on the lower arm for turning the axle housing by a driving force produced by the motor. A rotation axis of the motor and a pivot of the axle housing are arranged to be offset from each other. | 03-05-2009 |
20090120711 | WORM GEAR AND ELECTRIC POWER STEERING APPARATUS - A worm gear includes a worm shaft including a thread including a tooth flank that defines a concave edge in a tooth profile of the thread; and a worm wheel including a tooth including a tooth flank that defines a convex edge in a tooth profile of the tooth. The worm wheel meshes with the worm shaft in such a manner that the tooth flank of the worm wheel and the tooth flank of the worm shaft, as working flanks, define therebetween an entrance-side clearance as a clearance where the thread of the worm shaft starts to mesh with the tooth of the worm wheel, and an exit-side clearance as a clearance where the meshing terminates, wherein the exit-side clearance is smaller than the entrance-side clearance. | 05-14-2009 |
20100152971 | STEERING CONTROL APPARATUS - A steering control apparatus includes a rack shaft connected to steerable wheels and having rack teeth in a given axial range, a first steering mechanism having a reduction gear and a first electric motor to apply a drive force to the rack shaft through the reduction gear, a second steering mechanism having a second electric motor, a power cylinder equipped with hydraulic pressure chambers, an oil pump driven by the second electric motor to provide a supply of hydraulic oil to the hydraulic pressure chambers such that the power cylinder applies a driving force to the rack shaft in accordance with a pressure difference between the hydraulic pressure chambers and a switching unit capable of selectively switching the supply of hydraulic oil from the oil pump to the hydraulic pressure chambers, and a control device that controls the first and second electric motors in response to a driver's steering operation. | 06-17-2010 |
20100243367 | POWER STEERING APPARATUS - A power steering apparatus includes a worm wheel mounted on the steering shaft, a worm shaft engaged with the worm wheel, a gear housing having a wheel accommodating portion to accommodate the worm wheel and a shaft accommodating portion to accommodate the worm shaft, a bearing mounted on the worm shaft to rotatably support the worm shaft, a holder disposed in the shaft accommodating portion and having a bearing retaining portion to retain the bearing and a resilient element disposed in the shaft accommodating portion and having a resilient body portion formed with a curvature. The resilient body portion is so structured as to become deformed in such a manner as to increase or decrease in diameter when the bearing shifts in a direction that moves the worm shaft away from the worm wheel and bias the bearing in a direction that urges the worm wheel toward the worm wheel. | 09-30-2010 |
20110066327 | POWER STEERING APPARATUS - A power steering apparatus includes a motor unit, and a driven device such as a pump or worm gearing. The motor unit includes an electric motor and an electrical control unit which are mounted in a common housing. The electric motor is provided with a rotation sensor. The electric motor and the rotation sensor are electrically connected to the electrical control unit within the housing. The rotation sensor is calibrated before the driven device is coupled to the motor unit. | 03-17-2011 |
20110151692 | CONNECTOR AND METHOD FOR PRODUCING THE CONNECTOR - A method for producing a connector has first to fifth processes. In the first process, a contact unit having a plurality of contacts and a tying part, is formed with the contacts tied at each axial direction middle part of the contacts by the tying part and with the contacts arranged parallel to each other. In the second process, a plating layer is formed on a part of the contact unit by soaking the contact unit in a plating bath from an axial direction one end side of the contact unit to an axial direction middle part of the tying part. In the third process, the contacts are isolated by cutting the tying part. In the fourth process, a part where the plating layer is formed, of the contact is inserted into a hole of a circuit board. In the fifth process, the contacts are soldered to the circuit board. | 06-23-2011 |
20120073897 | POWER STEERING APPARATUS - A power steering apparatus including a steering shaft, a sensor coil disposed on an outer circumferential side of the steering shaft and detecting a change in impedance value to determine an amount of relative rotation of an input shaft and an output shaft of the steering shaft, a steering housing including a first housing and a second housing, a sensor substrate disposed on the first housing, a neutral point regulating circuit on the sensor substrate which includes a resistor connected to the sensor coil and variably regulates a resistance value of the resistor so as to regulate the impedance value at a neutral point at which the amount of relative rotation of the input shaft and the output shaft is zero, and an electric motor which is driven and controlled in accordance with an output signal of the sensor coil regulated by the neutral point regulating circuit. | 03-29-2012 |
20120149243 | CONNECTING STRUCTURE AND PRODUCTION METHOD - A connecting structure to connect electronic components electrically through a plurality of conducting lines each including a covered segment including a wire conductor covered with an insulating covering and an uncovered segment includes a molding unit and a sealing unit. The molding unit encloses a boundary portion between the covered segment and the uncovered segment of each of the conducting lines so that the uncovered segments project in a first direction from a first end of the molding unit and the covered segments project in a second direction from a second end of the molding unit, and thereby holding the conducting lines to fix positions of the conducting lines relative to one another. The sealing member of an adhesive adheres to the second end of the molding unit and adheres to each of the covered segments of the conducting lines projecting from the second end of the molding unit. | 06-14-2012 |
20120261209 | TORQUE SENSOR AND POWER STEERING SYSTEM - First and second shafts are connected with each other through a torsion bar and arranged to rotate relative to each other within a relative rotational angle range A. A s torque sensor includes first and second resolvers for sensing the angular potions of the first and second shafts, respectively. The first resolver produces a periodical first resolver output signal so that the number X | 10-18-2012 |
20130180794 | Power Steering System - A power steering system has: a steering shaft; a pinion shaft; a torque sensor; a rack housing communicating with inside of the sensor housing; a rack shaft provided in the rack housing; a motor housing communicating with inside of the rack housing; an electric motor provided in the motor housing; an ECU housing communicating with inside of the motor housing; a motor control unit housed in the ECU housing; and a respiration valve provided at any of the sensor housing, the rack housing and the motor housing and located at an upper side with respect to an upper end of the ECU housing in vehicle-mounted state. The respiration valve has function by which air passes through each house and between inside and outside of the ECU housing so as to absorb change of expansion/contraction of the air in the ECU housing while suppressing entry of water from the outside. | 07-18-2013 |
20130289826 | Power Steering Apparatus, and Controller for Power Steering Apparatus - In a power steering system, a torque sensor obtains first and second rotation angles, and a steering angle sensor obtains third and fourth rotation angles. A controller includes a first absolute rotation angle calculation section, a second absolute rotation angle calculation section, and an abnormality detection section. The first absolute rotation angle calculation section calculates a first absolute rotation angle as a first estimate of an absolute rotation angle of a steering wheel based on the first and third rotation angles. The second absolute rotation angle calculation section calculates a second absolute rotation angle as a second estimate of the absolute rotation angle of the steering wheel based on the third and fourth rotation angles. The abnormality detection section detects an abnormality by comparison between the first absolute rotation angle and the second absolute rotation angle. | 10-31-2013 |
20130289827 | Power Steering System And Control Apparatus For Power Steering System - In a power steering system and a control apparatus for the power steering system, an abnormality detection process section ( | 10-31-2013 |
20140208890 | STEERING ANGLE SENSOR - A steering angle sensor for a vehicle including a steering angle sensor housing, a first gear, a rotation transmitting portion, a second gear meshing with the first gear, a third gear meshing with the first gear or the second gear, first and second magnetoresistance effect elements to detect first and second rotation angles as rotation angles of the second and third gears, respectively, and a biasing member disposed in the steering angle sensor housing to bias the first gear toward the second gear, wherein the first and rotation angles are combined to determine an absolute steering angle indicative of an amount of rotation of a steering wheel when the steering wheel is rotated from a neutral position in which a steerable road wheel is oriented to a straight ahead direction of the vehicle. | 07-31-2014 |