Hinge apparatus and electronic device including same

A hinge device that foldably interconnects a first housing and a second housing of an electronic device, the hinge device comprising:

• a first arm module comprising a first arm comprising a first cam structure and a second arm comprising a second cam structure, and configured to rotate about a first rotation axis;
• a second arm module comprising a third arm comprising a third cam structure and a fourth arm comprising a fourth cam structure, and configured to rotate about a second rotation axis;
• a first elastic member located between the first arm and the second arm and configured to press the first arm and the second arm in opposite directions;
• a second elastic member located between the third arm and the fourth arm and configured to press the third arm and the fourth arm in opposite directions;
• and
• a slide bracket comprising a first cam portion facing the first cam structure, a second cam portion facing the second cam structure, a third cam portion facing the third cam structure, and a fourth cam portion facing the fourth cam structure, and configured to move in response to the first arm module and the second arm module,
• wherein the first cam structure and the second cam structure of the first arm module are pressed toward the first cam portion and the second cam portion, respectively, via the first elastic member, and
• wherein the third cam structure and the fourth cam structure of the second arm module are pressed toward the third cam portion and the fourth cam portion, respectively, via the first elastic member.