Rotary operator, operation device, and acoustic control device

Abstract

A rotary operator includes: a first rotating body rotatable around an imaginary rotation axis; a second rotating body being detachably attached, and being configured to rotate integrally with the first rotating body and also being rotatable around the rotation axis independently of the first rotating body; and a friction adjusting member being covered by the second rotating body as viewed from a side of the second rotating body with respect to the first rotating body and being configured to adjust friction force between the first rotating body and the second rotating body, in which the first rotating body includes: an installation portion to which the friction adjusting member is detachably attached; and a first engagement portion, and the second rotating body includes a second engagement portion engageable with the first engagement portion.

Dependencies are inferred from the claim text.