公开(公告)号：US20190032921A1

公开(公告)日：2019-01-31

申请号：US15900069

申请日：2018-02-20

Applicant: LG Electronics Inc.

Inventor： Yeonsik HA ,  Hyunggu LEE

IPC: F24C3/12 ,  G05G1/08 ,  G05G9/00 ,  G05G1/10 ,  G05G25/00 ,  G01D5/14

CPC classification number: F24C3/124 ,  F24C7/082 ,  G01D5/145 ,  G05G1/08 ,  G05G1/10 ,  G05G5/05 ,  G05G9/00 ,  G05G25/00

Abstract: A knob assembly includes a knob located at a front panel of the knob assembly and configured to rotate about an axis, a knob ring that is located at the front panel, that surrounds the knob, and that rotates about the axis independently of rotation of the knob, an adjusting shaft that extends from the knob through the knob ring in a direction rearward of the front panel and that rotates based on rotation of the knob and causes operation of a device, a first rotation sensing part that senses rotation of the adjusting shaft, and a first sensing target that rotates based on rotation of the adjusting shaft. A position of the first sensing target changes based on rotation of the first sensing target, and the first rotation sensing part senses at least one of the position or a change of the position of the first sensing target.