Matsushita Electric Industrial Co., Ltd.

Toshihiro Nomura

Yoshiyuki Nakade

Masahide Onishi

Hisashi Nishikawa

Masaru Shimizu

Toru Arakawa

Ichiro Tateishi

Shigeyoshi Umezawa

Tsutomu Maeda

Hideki Tsukaoka

Tsurugi Sawai

Satoru Fukui

A rotation angle detector is provided with a spring to thrust a rotary body against protrusions formed on an inner wall of an opening via a detector body in a manner to keep the rotary body rotatable without any play in a linked motion with a steering shaft. As a result, the detector can detect rotation angles of the steering shaft with high accuracy.

Rotation angle sensor device for detecting rotation angle of a rotary shaft

A rotation angle detector includes a rotor, first and second detecting elements which rotate according to a rotation of the rotor, first and second detecting units for detecting rotations of the first and second detecting elements, respectively, and a control unit for detecting a rotation angle of the rotor based on a first signal when a difference between the first and second signals output from the first and second detecting units ranges within a predetermined range. The rotation angle detector has a simple structure and detects the rotation angle of the rotor accurately

Rotation angle detector

An angle sensor can be re-mounted properly. This angle sensor includes a detecting sensor that detects a turned volume of a rotary shaft, and a governor connected to the detecting sensor. The governor includes a comparator that compares a turned angle data obtained before the angle sensor is detached with a turned angle data obtained after the angle sensor is re-mounted. This angle sensor produces a remarkable advantage when it is used in cars which are governed using the data about a turned volume of the steering wheel or the shaft.

Angle sensor and car using the same

A light-controlling device of this invention includes a controlling circuit having a function for turning an incandescent lamp and an LED off simultaneously, which have different minimum voltages each other at predetermined illumination. When illumination of the lamp and the LED decrease to the predetermined illumination by rotating an operating section of a variable resistor, the controlling circuit turns the lamp and the LED off based on a signal from a detecting switch linked with rotating operation of the operating section. As a result, an operator does not feel strange.

Light-controlling device used for vehicle

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Fukui, Japan

Toshihiro Nomura