Patent ID: 8390275
Filing Date: 2013-03-05
Classification: H01H

Abstract:
1. A component for input operation, comprising: a roller-shaped operation part; two cylindrical ring magnets including a first cylindrical ring magnet and a second cylindrical ring magnet magnetized such that each of the two cylindrical ring magnets has a plurality of north poles and south poles arranged in a circular pattern at a given angular pitch, each of the north poles arranged adjacent to respective one of the south poles, the first cylindrical ring magnet being arranged at a left side of the roller-shaped operation part and the second cylindrical ring magnet being arranged at a right side of the roller-shaped operation part, the cylindrical ring magnets and the roller-shaped operation part being coaxially arranged so that each pole of the plurality of north poles of the first cylindrical ring magnet are displaced circumferentially from each pole of the plurality of north poles of the second cylindrical ring magnet and so that each pole of the plurality of south poles of the first cylindrical ring magnet are displaced circumferentially from each pole of the plurality of south poles of the second cylindrical ring magnet; and magnetism detection elements arranged correspondingly to the ring magnets, respectively, wherein the component further includes stationary magnets arranged correspondingly to the ring magnets, respectively, to thereby create a first pair including one of the ring magnets and one of the stationary magnets and a second pair including another of the ring magnets and another of the stationary magnets; wherein attractive and repulsive force occurring between the first pair and attractive and repulsive force occurring between the second pair are totaled during partial rotation of the operation part to provide a click touch for the operation part; wherein the stationary magnets are fixed to a plate-like body made of high magnetic permeability material; and wherein the plate-like body with the stationary magnets fixed thereto is arranged so that magnetism from the stationary magnets, toward a position where the magnetism detection elements are arranged is blocked by the plate-like body.