Patent ID: 11881364
Assignee: SEOYON E-HWA CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC B  H  G | IPC B  H

Claim 3:
4. A user interface device, comprising:
a display;
a rail extending in a first direction parallel to the display at one side of the display;
a hinge configured to slide along the rail in the first direction; and
a knob coupled to the hinge to slide in the first direction on a display surface of the display and configured to detect a rotation input;
wherein the knob comprises:
a knob base coupled to the hinge,
a bearing including a first member coupled to the knob base and a second member rotatable about a rotation axis with respect to the first member, and
a knob body coupled to the second member to rotate with respect to the knob base,
wherein the knob body is detachably coupled to the second member,
wherein the knob body is provided with a plurality of second magnets having a first predetermined radius based on a center of rotation and arranged at equal intervals along a circumferential direction, and the knob base is provided with a plurality of third magnets having a second predetermined radius based on a center of rotation and arranged at equal intervals along a circumferential direction, the number of third magnets equaling to the number of the second magnets.