The Furukawa Electric Co., Ltd.

Furukawa Co., Ltd.

Takehisa Ishihara

Tomotaka Watanabe

Kengo Tanaka

Fumihiko Abe

Dongzhi Jin

Takayuki Enomoto

Shinsuke Terada

A rotation-sensored rotary connector includes: a rotary connector for electrically connecting an electrical component installed on a steering to a vehicle-body side; and a rotation sensor for detecting a rotational angle of the steering; wherein the rotation sensor includes a rotor to be directly mounted on a steering shaft, and the rotary connector includes a rotor to be rotated in compliance with the rotor of the rotation sensor, thereby allowing to detect the rotational angle of the steering with an excellent precision.

Rotation-sensored rotary connector

In a rotation sensor including a rotormounted to a rotating shaft S and having a conductive sensing unitwhereof the width varies in the circumferential direction; and stationary coreseach including an exciting coil for forming a magnetic circuit with respect to the sensing unit of the rotor by allowing AC exciting current to flow therein, and a core body formed of magnetic material and retaining the exciting coil, and being mounted to the fixed member and disposed so as to oppose to the sensing unit of the rotor at a distance in the axial direction of the shaft, the stationary cores are disposed at two positions each having a central angle with respect to the axis of the shaft other than substantially 180&#xb0;, so that the rotation sensor which is superior in mountability, is low in cost, and is superior in detection accuracy over a wider range is provided.

Rotation sensor

A rotation sensor comprising: a stator of the rotation sensor; a rotator arranged around the stator in a rotatable manner relative to the stator, so as to detect a rotated-angle variation of a detection target correspondingly to an overlapped state of the rotator with the stator; and a casing for accommodating the rotator therein; wherein at least a part of an outer peripheral surface of the rotator is slidable relative to an inner surface of the casing for accommodating the rotator and stator therein, so that the rotator is constantly smoothly rotated, to thereby accurately detect the rotated-angle variation of the measurement target.

Rotation sensor and displacement detecting apparatus and method utilizing the same

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Tokyo, Japan

Takehisa Ishihara