Operation switch and electric device

Abstract

Provided are an operation switch and an electronic device which have a contact point structure requiring a plenty of contact points for enabling a plural switch structure on a limited small flat region of a rotary operation body and can assure a stable contact point structure by eliminating concentration of the contact points on the flat region. Among a plenty of fixed contact points arranged on a printed circuit board, fixed points for an encoder are extracted from the printed circuit board to provide an encoder movable contact point plate. A conductive piece in contact with these has an operation switch branched to a terminal which is brought into contact with the fixed contact points arranged on the printed circuit board and a terminal which is brought into contact with the fixed contact points arranged on the encoder movable contact point plate.

Description

technical field [0001] The present invention relates to an operation switch used for the operation part of small devices such as portable digital cameras, mobile phones, and game machines. Background technique [0002] In recent years, portable devices such as digital cameras have been miniaturized. On the other hand, displays have tended to increase in size. Operation switches need to be further miniaturized while maintaining a size that is easy to use. When the operation switch applied to this is pressed in the push piece provided in the central part, or when the rotating operation body around it is tilted to push down the position of a specific rotation direction, their bottoms are pushed down and arranged at the bottom. The central switch and peripheral switches of the center switch, and the signal is taken out from the pressed part for detection. [0003] In such a detection structure, a non-contact type operation switch is known, but a contact type operation switch ha...

AI Technical Summary

Problems solved by technology

However, since a plurality of conductive sheets are collectively arranged in a narrow contact area, each conductive sheet cannot be lengthened, and the length of the conductive sheet is limited, making it difficult to ensure a stable contact pressure with respect to the contact structure.

As a result, when manufacturing conductive sheets, high dimensional accuracy such as elastic force and contact angle is required, making it difficult to reduce costs

In addition, when the dimensional accuracy is low, the contact pressure of each conductive sheet is not uniform, and unstable contact is likely to occur, and there is also a problem of poor performance in terms of durability and reliability.

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