Importance

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Abstract

The present invention provides a steering operation input apparatus that allows a predetermined neutral position to be acquired regardless of a direction in which a nut is mounted. In a mechanical stopper mechanism according to a first embodiment, a central position of a nut in an axial direction aligns with a central position of a crest and a central position of a root of an externally threaded portion with a steering wheel placed in a neutral state. Assuming that a first imaginary line is set so as to extend in a direction perpendicular to a rotational axis and pass through the crest and the root and a second imaginary line is set so as to extend perpendicularly to the first imaginary line on a line of the rotational axis in a cross section perpendicular to the rotational axis at the central position of the nut, a pin is symmetric about the first imaginary line and asymmetric about the second imaginary line.

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First Claim