Hinge assembly and foldable electronic device including the same

A foldable electronic device, comprising:

• a display comprising a first area, a second area, and a flexible area between the first area and the second area;
• a first housing located around the first area of the display;
• a second housing located around the second area of the display;
• and
• a hinge assembly connected between the first housing and the second housing adjacent to at least a portion of the flexible area of the display and configured to operate between a folded position at which the first area and the second area face each other and an unfolded position at which the first area and the second area do not face each other,
• wherein the hinge assembly comprises:
• a hinge cover connected to the first housing and the second housing;
• an elastic body;
• a first hinge connected to the hinge cover to support the first area of the display;
• and
• a second hinge connected to the hinge cover to support the second area of the display,
• wherein each of the first hinge and the second hinge comprises:
• a shaft with a folding axis;
• a first cam configured to perform a linear motion along the folding axis;
• a second cam configured to contact the first cam;
• and
• a third cam configured to contact the first cam, and
• wherein the first cam is configured to contact only one of the second cam and the third cam at a time, and
• wherein the elastic body exerts a force on the first cam in a direction parallel to the folding axis.