Abstract: A dynamic pressure bearing device has a bearing and a shaft which is partly accommodated in the bearing. A sliding surface of the bearing is provided with dynamic pressure grooves of circular shape. When the direction of relative movement between the shaft and the bearing is reversed, fluid within the dynamic pressure grooves can move its flowing direction change along the circular dynamic pressure grooves. Further, the dynamic pressure grooves, being of circular shape, can generate dynamic pressures of equal levels irrespective of the direction of the movement.

Abstract: A rear-wheel steering angle detecting apparatus according to the present invention includes an absolute value type rotary encoder (13) operatively connected with a rear-wheel steering mechanism for detecting the steering angle of the rear wheels of a vehicle, and a controller for finely dividing the output of the rotary encoder by the output of a pulse generator (12) for fine division of the rear-wheel steering angle. By finely dividing the rear-wheel steering angle, as detected by the rotary encoder, by the number of pulses generated by the pulse generator, which is used for speed detection, the rear-wheel steering angle is detected with a high degree of resolution.

Abstract: The invention is directed to a pulse generator provided with a connecting member electrically connecting the lead and coil having an entwining section at one end thereof at the portion different from where an end of the coil is fixed, around which wound the middle portion of the coil drawn out to be connected to the lead, whereby a stress added to the drawn out coil is absorbed by the coil twined around the entwined portion, to be prevented from cutoffs of the coil fixed to the one end of the connecting member. A reinforcing member can be applied to the connecting member at an end thereof where the coil is fixed, to reinforce the bending strength of the end portion of the connecting member thereby to prevent cutoffs of the coil. Furthermore, the pulse generator may be provided with a bobbin having a protrusion at the edge of one flange thereof the drawn out coil twining around thereby to maintain the winding strength of the coil to facilitate the following work.

Abstract: A pulse generator is constructed and arranged such that, by bringing a piece to be detected into contact or making it disconnect with regard to a detecting head at the tip end of a magnetic iron core, the magnetic flux in interlinkage with a detecting coil is caused to change, and by bending almost at right angles a terminal in connection with both the detecting coil and a leading wire, the tension occurring on the leading wire is not transmitted to connections between the detecting coil and the terminal.

Abstract: A power steering apparatus for power steering the steerable wheels of a vehicle is disclosed which includes a steering column having one end connected with a steering wheel and the other end operatively connected with the steerable wheels; a cylindrical housing surrounding the steering column and providing a space therebetween; a torque sensor disposed in the housing for detecting a steering torque exerted on the steering wheel by a driver; a conductor or lead line wound around the steering column and accommodated in the housing, the lead line having one end electrically connected to the torque sensor and the other end to terminals which are disposed outside the steering column; and a motor installed on the housing and operatively connected with the steering column for power assisting the steering effort exerted on the steering wheel by the driver, the motor being driven to run in accordance with the steering torque detected by the torque sensor.

Abstract: An electrically powered drive apparatus comprises a first clutch plate secured to an output shaft and a second clutch plate mounted to a gear which is rotatably and slidably provided on the output shaft. The second clutch plate comprises a resilient transmission member and a magnetically-attracted contact member. The resilient transmission member is secured at a first portion to the gear and is adapted to resiliently deflect. The contact member is secured to a second portion of the resilient transmission member. The resilient transmission member has teeth into which pins extend in meshing engagement. When a clutch coil is energized, the contact member is attracted by the first clutch plate to thereby cause the pins to engage the teeth, thereby transmitting rotational force from the drive source to the gear. When the clutch coil is de-energized, the contact member is released to return to its home position with the aid of the resiliency of the resilient transmission member.

Abstract: A motor-driven apparatus for controlling a throttle valve includes first and second clutch plates 11,13 mounted on an output shaft 5 opposite each other, with the second clutch plate rigidly secured to the output shaft. The first clutch plate is urged by a spring 12 toward an output gear 10 rotatably mounted on the output shaft. When the second clutch plate is magnetized, the first clutch plate is attracted to it for engagement causing the second clutch plate to rotate with the first clutch plate and the output gear, thus transmitting the torque of a motor 18 to the output shaft. An axial gap between the second clutch plate and a yoke 15 ensures rotation of the second clutch plate even when foreign substances such as iron particles are trapped in the gap because the foreign substances will easily be displaced out of the gap by centrifugal force during rotation.

Abstract: A constant speed drive unit or cruise control in which an output approximate to a required gain characteristic is obtained from a speed signal, frequency conversion of the approximate output is carried out, and a motor is driven with a converted frequency pulse, whereby variable gain control approximate to a gain of the automobile is achieved. When speed deviation (difference between actual speed and set speed) is small, operation is switched to a constant gain control to improve control stability.

Abstract: A rotation detecting device comprising a pole formed of a ferromagnetic material, a bias magnet for applying a magnetic flux to the pole, a bobbin receiving the pole and the bias magnet in a series arrangement, a detecting coil mounted on the bobbin, terminals each having a coil connecting part connected to one end of the wire of the coil and a lead wire connecting part connected to a lead wire, a cap for covering the terminals and a portion of the bobbin holding the terminals, fixing means for fixing the terminals to the bobbin.

Abstract: A steering torque detector includes input and output shafts, a torsion bar connected between the input and the output shafts, a printed circuit board attached to the input shaft or output shaft and resistor layers and electrode as a potentiometer, having a mounting ring made of electric insulator and fitted around both the input and output shafts, and a slider attached to the mounting ring and elastically kept in contact with the resistor layers at the slider. The potentiometer includes main and auxiliary circuits each having the resistor layer and the electrode, the resistor layers of both circuits being located at a distance from each other in the radial direction of the detector and extending along mutually concentric circles through the same range of central angle of the detector. The slider includes a main slider kept in contact with the resistor layer of the main circuit at one end thereof, and an auxiliary slider kept in contact with the resistor layer of the auxiliary circuit at one end thereof.

Abstract: An electric circuit with limit-switch for limiting rotatable range of an output shaft of an electric drive unit disposed between an electric motor and a control device for supplying a drive current thereto, comprising a first snap action limit switch disposed on a first input terminal of the motor, and a second snap action limit switch disposed on a second input terminal of the motor, the limit switches having pivot points of movable contacts on a motor side, their normally-closed contacts being connected to an output side of the control device and their normally-open contacts being connected to a common connecting point, and the normally-closed contacts of the first limit switch is connected to the common connecting point through a diode in the direction allowing an electric current to flow from each of the normally-closed contacts toward the common connecting point, and further comprising a diode for allowing an electric current to flow in parallel to the second limit switch, bypassing between the normally-

Abstract: A steering torque detecting apparatus for use in an electrically-operated power steering system of a vehicle. Flexural load which is applied between a pair of input and output shafts during a steering operation is absorbed by the contact between a printed board and the end of a boss portion of a mounting ring for mounting a slider, thereby preventing displacement of the position of contact of the slider with a potentiometer element. The mounting ring is provided with an elastically deformable cylindrical collar portion which surrounds the slider and the printed board is movably disposed inside the cylindrical collar portion to thereby prevent intrusion of foreign matter into the area of contact between the slider and the printed board. A bush for supporting the printed board is rigidly secured to either the input or output shaft through engagement between a positioning groove and a fixing pin and engagement of a bent end portion of the bush with a groove provided in the shaft.

Abstract: In a pneumatic actuator wherein air pressure in a diaphragm compartment (38) is changed by controlling solenoid valves (39, 39 and 41) thereby to output a displacement; an intake solenoid valve (39) has a spring (30h) which penetrates a center part of a fixed iron core (39e) and urges a movable iron core (39f), and the solenoid valves (39, 39 and 41) are mounted on a housing (31) in a triangular disposition with terminal side thereof faced to the housing (31), and besides, one of terminals of each solenoid valve (39 or 41) is secured with each other at a center part of the triangular disposition, and the other terminals are disposed outward of the triangular disposition.

Abstract: A rotation detecting device comprising a pole formed of a ferromagnetic material, a bias magnet for applying a magnetic flux to the pole, a bobbon receiving the pole and the bias magnet in a series arrangement, a detecting coil mounted on the bobbin, terminals each having a coil connecting part connected to one end of the wire of the coil and a lead wire connecting part connected to a lead wire, a cap for covering the terminals and a portion of the bobbin holding the terminals, fixing means for fixing the terminals to the bobbin.

Abstract: A cruise control apparatus for an automobile has a motorized actuator with a motor which adjusts the degree of opening of a throttle valve so as to maintain a desired speed. All or part of the control circuit for the motor is in the form of a hybrid integrated circuit which is mounted on the actuator in a manner such that the actuator can serve as a heat sink for the hybrid integrated circuit. In one form of the invention, the hybrid integrated circuit is mounted on the outer surface of the housing of the actuator motor. In another form of the invention, the hybrid integrated circuit is mounted on the inner surface of the actuator housing. The motorized actuator may be further equipped with a contactless position detector for detecting the rotational position of the output shaft of the actuator motor.

Abstract: A wire mounting structure for a vehicle cruise control has an upper plate 20a of a connector 20 formed with a through-hole 21a and a notch 22, and a lower plate 20b formed with an enlarged hole 21b for receiving the lower end of a rod 6b.

Abstract: A pneumatic constant-velocity running apparatus employing a diaphragm type actuator in which a portion or the whole of a control circuit for the actuator is made of a hybrid IC and the hybrid IC portion with a protector is fixedly mounted onto the outer surface of an housing of the actuator. The apparatus is made compact and further be remarkably improved in an operation accuracy and in noise-proof property as well as in heat radiating property.

Abstract: For constant-speed cruising of a car, a throttle valve in a carburetor of a car is controlled by a motor-driven actuator through an improved variable-length lever mechanism. The variable-length lever mechanism has four arms which are movably connected through four elbows to form a changeable rhombic shaped lever. A linear actuator is interposed between a first pair of the four elbows at first opposing corners so that the distance between the first pair of elbows is expanded or contracted, whereby a radius in swing movement of the variable rhombic shaped lever mechanism is changed.

Abstract: A throttle control device includes a first gear 5 rotatable corresponding to the depression of an accelerator pedal 1 of a vehicle engine a first motor 8 engaged with a second gear 6 meshed with the first gear, the first motor being actuated upon a traction slip detection to rotate the first gear through the second gear to thereby correct the rotation angle of the first gear. A third gear 12 is ganged with the first gear to rotate therewith, and a throttle link 20 is coupled with the third gear for controlling the opening of a throttle valve 22 of the engine through a throttle wire 19 corresponding to a rotation angle of the third gear, and a second motor 18 drives the third gear through a clutch to control the opening of the throttle valve during a constant speed running of the vehicle.

Abstract: A cruise control apparatus for an automotive engine has an actuator with a moving output member whose movement adjusts the opening of a throttle valve so as to maintain the speed of the automobile at a desired speed. The motion of the output member is converted into linear motion by a motion converter whose speed of motion varies with the degree of the automobile. The speed of throttle valve opening therefore varies with the speed of the automobile and a desired speed so as to provide good responsiveness. In a preferred embodiment, the motion converter is a cylindrical cam which is rotated by the actuator and which has a helical groove with a varying pitch. The rotation of the cylindrical cam causes the linear movement of a sliding block connected with the throttle valve. In another preferred embodiment, the motion converter is a pulley with a variable radius and rotated by the actuator. The rotation of the pulley operates the throttle valve through a wire cable.