Patent ID: 11956378
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Telecommunications (Electrical engineering)
Classification: CPC H  F  G | IPC G  H

Claim 20:
21. An electronic device comprising:
a first housing;
a second housing; and
a hinge structure connected to the first housing and the second housing such that the first housing rotates about a first axis of rotation parallel to an axial direction and the second housing rotates about a second axis of rotation parallel to the axial direction,
wherein the first housing and the second housing form a first angle,
wherein the hinge structure includes:
a first arm shaft configured to operate based on rotation of the first housing;
a first elastic member disposed on the first arm shaft configured to provide a first elastic force in a first extension direction of the first arm shaft;
a second arm shaft configured to operate based on rotation of the second housing; and
a second elastic member disposed on the second arm shaft configured to provide a second elastic force in a second extension direction of the second arm shaft,
a folding detent section defined from a fully folded state to a first state having a second angle, wherein the first elastic member and the second elastic member are compressed by a first displacement as the second angle increases in the folding detent section;
an unfolding section defined from the first state to a third state having a third angle greater than the second angle, wherein, in the third state, the first elastic member and the second elastic member have a greater depression by a second displacement than in the first state; and
a free stop section defined from the third state, wherein, in the free stop section, the first elastic member and the second elastic member have a greater depression by at least the second displacement than in the first state, and

wherein the unfolding section includes:
a first section in which the first elastic member and the second elastic member remain in a constant compressed state independently of the second angle; and
a second section in which the first elastic member and the second elastic member are compressed as the second angle increases.