Patent ID: 11935710
Assignee: ALPS ALPINE CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A rotary operating device comprising:
a case having a cavity, the cavity having an annular shape with an opening at a top;
a rotating shaft member having an annular shape, rotatable with respect to the case, and closing the cavity;
an operation member having an annular shape with an opening at a bottom, covering the cavity, engaging with the rotating shaft member, and rotating together with the rotating shaft member; and
a sensor disposed within the cavity to detect rotation of the rotating shaft member,
wherein the case has an inner peripheral wall having an annular shape,
wherein the operation member has an inner cylindrical portion having an annular shape,
wherein the rotating shaft member has a peripheral wall that extends downward and extends along an outer peripheral surface of the inner peripheral wall, and
wherein a first gap between the inner peripheral wall of the case and the peripheral wall of the rotating shaft member is smaller than a second gap between an inner peripheral surface of the rotating shaft member and the inner cylindrical portion of the operation member.