Title:
ROTARY OPERATION DEVICE AND ELECTRONIC APPARATUS
Document Type and Number:
Japanese Patent JP2022178771
Kind Code:
A
Abstract:
To provide a magnetic rotary operation device that excels in dust-proof and drip-proof performance.SOLUTION: A rotary operation device (20) comprises: a rotary operation member (200); a base member (240); a magnet (210), a plurality of magnetic poles of which are alternately magnetized, with the direction of magnetization being parallel to a prescribed shaft, and which rotates around the prescribed shaft together with the rotation of the rotary operation member; a housing (10) for holding a first magnetic substance (220) and a second magnetic substance (230) respectively arranged so as to sandwich the magnet, facing the magnetized surfaces of the magnet, and the base member; and a detection part (140) for detecting a change of a magnetic field due to the rotation of the magnet. It is possible to generate an operation force in accordance with the positional change of magnetic polarity, a first tooth part (221) of the first magnetic substance and a second tooth part (231) of the second magnetic substance due to the rotation of the magnet. The magnet and the first and second magnetic substances are accommodated in the inside of the housing, with the detection part located at a position that does not overlap the magnet as seen from the thrust direction of the magnet.SELECTED DRAWING: Figure 3
Inventors:
NAGATSU SHO
KAMIYA ATSUSHI
SATOMURA SHOGO
ASAI YOSHIKAZU
AKIMOTO TAKAHIRO
KAMIYA ATSUSHI
SATOMURA SHOGO
ASAI YOSHIKAZU
AKIMOTO TAKAHIRO
Application Number:
JP2021085803A
Publication Date:
December 02, 2022
Filing Date:
May 21, 2021
Export Citation:
Assignee:
CANON KK
International Classes:
G01D5/245; G03B17/02; H01H19/06; H01H19/20
Attorney, Agent or Firm:
Ryosuke Fujimoto
Atsuya Mizumoto
Tomoya Hirayama
Atsuya Mizumoto
Tomoya Hirayama