Patent ID: 11940839
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G  F  H  E | IPC G

Claim 0:
1. A foldable electronic device comprising:
a first housing and a second housing;
a hinge structure connected to the first housing and the second housing; and
a display disposed in the first housing and the second housing,
wherein the hinge structure includes:
a first shaft rotating about a first axis;
a second shaft rotating about a second axis;
a first arm part connected to the first shaft;
a second arm part connected to the second shaft;
a first rotation part connected to the first arm part and rotating about a third axis;
a second rotation part connected to the second arm part and rotating about a fourth axis;
a first main gear disposed on the first shaft;
a second main gear disposed on the second shaft; and
a first compound gear and a second compound gear disposed between the first main gear and the second main gear,
wherein the first compound gear includes:
a first gear portion geared with the first main gear, and of which a distance from a center point of the first gear portion to a gear tooth end of the first gear portion is a first radius; and
a second gear portion geared with the second compound gear, and of which a distance from a center point of the second gear portion to a gear tooth end of the second gear portion is a second radius that is smaller than the first radius; and
wherein the second compound gear includes:
a third gear portion geared with the second main gear, and of which a distance from a center point of the third gear portion to a gear tooth end of the third gear portion is the first radius; and
a fourth gear portion geared with the second gear portion of the first compound gear, and of which a distance from a center point of the fourth gear portion to a gear tooth end of the fourth gear portion is the second radius.