Kabushiki Kaisha Tokai Rika Denki Seisakusho

Toyota Jidosha Kabushiki Kaisha

Toyota Jidosha Kogyo Kabushiki Kaisha

Jeco Co., Ltd.

Hisashi Hirose

Hitoshi Iwata

Katsuhiro Minami

Shigeru Iguchi

Hisahiro Ando

Kazuo Kouno

Hiroshi Arai

Yasuo Miyake

Kazuhisa Kubota

Hiroshi Iiyama

Takao Sakakibara

Shigeo Hara

Masahiro Miyaji

Keiichi Umehara

Hirokazu Komiya

Kazuo Iwata

Takanori Ohta

Sinzi Mizutani

Kazuo Kono

This invention relates to a rotation sensor which detects the magnetic field which changes with the rotation of a rotary shaft, thereby to detect the amount of rotation of the rotary shaft. The rotation sensor of the present invention has the boundaries between magnetized regions set with high precision. The boundaries forms magnetic fields stably, whereby the detection of rotation is performed with high accuracy.

Method of making a magnetic rotation sensor

Magnetic rotation sensor for rotary shaft

A steering angle sensor including a case body having a through hole for a steering shaft. The case body is adapted to be fixed to a vehicle body. A cover is attached to an end portion of the case body and a printed board having a flat resistor element is provided at the end portion of the case body. A hollow rotor for passing the steering shaft therethrough is rotatably supported by the case body and the cover, and the hollow rotor has a positioning portion for positioning the steering shaft. A contactor is mounted on the rotor within the cover and disposed in sliding contact with the resistor element of the printed board. A spring is interposed between the steering shaft and the rotor to apply a resilient force thereto. The resistor element has a degree of variation of a sensor output voltage in a first range of steering angles, in straight running of a vehicle, larger than that in a range of steering angles exceeding the first range.

Steering angle sensor

Steering angle sensor apparatus includes a disc, a circuit substrate and a sensor contained within a single cover. The disc has indications such as slits or lines and is mounted on one of a steering shaft that rotates during a steering operation and a stationary member such as a steering column. The circuit substrate includes circuit parts and is mounted on the other one of the steering shaft and stationary member. A sensor includes at least one element mounted on the circuit substrate and senses the relative movement of the disc caused by the steering operation. The circuit substrate is positioned to confront a surface of the disc.

Steering angle sensor apparatus

A device for detecting rotation of a steeering wheel for motor vehicles is disclosed which comprises an encoding member rotatable together with a steering wheel and having markers at predetermined position, a sensor so disposed as to correspond to a locus of rotation of the markers; and a signal generating circuit for generating pulse signals representative of information on the rotation of the encoding member whenever the sensor is caused to correspond to the markers. A first casing housing and rotatably holding the encoding member and a second casing housing and holding the signal generating circuit are formed integrally with each other.

Device for detecting rotation of steering wheel for automobiles

A switching device suitable for use on vehicles as a window regulator switch or a sunroof regulator switch. The switching device comprises a solenoid unit including a yoke, a core and a coil, a first card attached to the core so as to be pressed against a contact for supplying current to the coil of the solenoid unit and to an external load such as a motor, to keep the contact closed while the core is attracted to the yoke, a second card disposed for movement in parallel to the direction of movement of the first card, a pivotally supported operating knob having an operating arm connected to the second card, and a returning mechanism for biasing the operating knob toward the neutral position to return the operating knob to the neutral position when released. When the operating knob is turned to a manual operating position the contact is closed temporarily and is opened when the operating knob is released. When the operating knob is turned to an automatic operating position, the second card is locked at an operating position to keep the contact closed even if the operating knob is released. The operating knob is returned to the neutral position by a returning mechanism when released.

Switching device

A device for coupling two rotary shafts, wherein a guide member is used on the coupling end of a first shaft to guide a coupling protrusion on the coupling end of a second shaft into a V-shaped coupling recess on the first shaft. The guide member can be made of a resilient plastic, to provide a flexible and detachable coupling member and reduce abnormal wear of the rotary shaft.

Rotary shaft coupling device

An inclinometer of the type wherein a weight rotatable in accordance with the inclination of a vehicle is provided for a drive unit, and a torque of the drive unit is transmitted to a driven unit so as to display the inclination angle of the vehicle with an inclination indicator, there are provided a zero point adjusting spiral spring, the inner end thereof being affixed to a shaft of the driven unit, while an outer end is affixed to a rotary drive member, and a zero point adjusting knob for rotating the rotary drive member. According to this invention, after the zero point has been adjusted, the zero point display line of the indicators and the zero point scale line of the scale board can be aligned horizontally, thus improving the appearance of the zero point display.

Inclinometers

A dimmer suitable for use to control the intensity of illumination of a lamp or lamps for illuminating an instrument panel provided in a compartment of a vehicle such as a motor car, comprises: a dimming transistor connected to a lamp or lamps to be dimmed for controlling an electric current supplied to said lamp or lamps, a switching circuit connected to said dimming transistor for generating pulses having a controllable duty ratio to cause said dimming transistor to turn `ON` on `OFF`, surge voltage sensing means for sensing a surge voltage applied to an electric source line, and transistor shutoff means for shutting off said dimming transistor in response to a signal from said surge voltage sensing means.

Dimmer

Growing community of inventors

Aichi, Japan

Hisashi Hirose