Mitsubishi Denki Kabushiki Kaisha

Mitsubishi Denki K.k.

Masayoshi Onishi

Takeshi Yasukawa

Hiromasa Ozawa

Hisato Umemaru

Tadayuki Fujimoto

Yasuaki Hata

Shigemi Yamamoto

Mitsuharu Morishita

Hajime Kozuka

Yasuo Naitou

Masanobu Kashihara

Masahiko Noguchi

Shinichi Nobuto

Toshiyuki Sakurai

Yoshikatu Haruta

Tadashi Yagi

Yoshinobu Aiyama

Takashi Kawakami

Rear-wheel steering angle detecting apparatus for a vehicle

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. In addition, the drawn out coil is prevented from being rubbed by the edge of the flange to be cut off.

Pulse generator for use in a speed sensor

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.

Pulse generator pick up coil assembly

Power steering apparatus

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.

Electrically-powered drive apparatus

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.

Motor-driven control apparatus

Speed control unit for an automobile

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.

Rotation detecting device having a terminal holding arrangement

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. Both the main and auxiliary sliders are located at a distance from each other in the radial direction and extending along mutually concentric circles so that the one ends of both the main and auxiliary sliders are positioned on the radial direction.

Steering torque detector

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-closed contact and the movable contact and flowing toward the motor.

Electric circuit with limit switches for limiting rotatable range of

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.

Steering torque detecting apparatus

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.

Pneumatic actuator

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.

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. The position detector comprises a disk which is rotated by the drive shaft of the actuator, a permanent magnet which is secured to the disk, and two magnetic sensors which detect the magnetic field produced by the permanent magnet. The magnetic sensors are housed within the hybrid integrated circuit.

Growing community of inventors

Himeji, Japan

Masayoshi Onishi