Rotatable operation apparatus and electronic apparatus

A rotatable operation apparatus includes a rotatable operation member, a magnet having alternately magnetized magnetic poles, first and second magnetic members respectively including first and second teeth, a body frame, and a detector. A magnetized direction of each magnetic pole is parallel to a p...

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Bibliographische Detailangaben
Hauptverfasser:	Nagatsu, Sho, Asai, Yoshikazu, Akimoto, Takahiro, Satomura, Shogo, Kamiya, Jun
Format:	Patent
Sprache:	eng
Schlagworte:	ACCESSORIES THEREFOR APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY MEASURING MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR PHOTOGRAPHY PHYSICS TARIFF METERING APPARATUS TESTING
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Beschreibung
Zusammenfassung:	A rotatable operation apparatus includes a rotatable operation member, a magnet having alternately magnetized magnetic poles, first and second magnetic members respectively including first and second teeth, a body frame, and a detector. A magnetized direction of each magnetic pole is parallel to a predetermined axis about which the rotatable operation member rotates. The magnet has a ring shape and is configured to rotate about the predetermined axis as the rotatable operation member rotates. The rotatable operation apparatus generates an operation force according to a change in positions of the magnetic poles, caused by the rotation of the magnet, relative to positions of the first tooth and the second tooth. The magnet, the first magnetic member, and the second magnetic member are housed inside the body frame. When viewed from a thrust direction of the magnet, the detector is disposed at a position that does not overlap with the magnet.