Aisin Seiki Kabushiki Kaisha

Yuji Hiraiwa

Keiji Yasuda

Katsuyoshi Shirai

Satohiko Nakano

Kouji Akashi

A displacement detecting device includes a power supply line made of a conductor on a substrate, an earth line made of a conductor on the substrate, a plurality of output lines made of a conductor on the substrate, a resistance formed between the power supply line and the earth line on the substrate, and a brush sliding on the resistance and at least one of the output lines electrically connecting between the resistance and at least one of the output lines, the displacement detecting device generating the output signal from the output lines based on the position of the brush, wherein one of the power supply line and the earth line is disposed between the output lines.

Displacement detecting device

In the present invention, a detection coil and a cancellation coil are closely provided and electrically connected in series to cancel induction noise. The cancellation coil may be disposed at a position not to sense the rotation. An axis of the cancellation coil may be provided in parallel to an axis of the detection coil. The numbers of turns for the cancellation coil may be the same as those for the detection coils. The cancellation coil may be disposed coaxial to the detection coils.

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Anjo, Japan

Yuji Hiraiwa