Hinge assembly and electronic device including the same

An electronic device comprising:

• a display comprising a first area, a second area, and a third area between at least the first area and the second area;
• a first housing configured to support the first area;
• a second housing configured to support the second area;
• and
• a hinge assembly configured to connect the first housing to the second housing and to operate between a folded state in which the first area and the second area face each other and an unfolded state in which the first area and the second area are viewable,
• wherein the hinge assembly comprises:
• a hinge bracket;
• a first rotator connected to the first housing and rotatably connected to the hinge bracket based on a first hinge axis;
• a second rotator connected to the second housing and rotatably connected to the hinge bracket based on a second hinge axis;
• a slide bracket slidably configured to be connected in a first axis direction parallel with the first hinge axis or the second hinge axis by interoperating with rotations of the first rotator and the second rotator;
• and
• a detent assembly configured to provide a detent force for resisting movement of the slide bracket in the first axis direction,
• wherein the detent assembly comprises:
• a cam configured for movement relative to the slide bracket in a second axis direction perpendicular to the first axis direction by interoperating with movement of the slide bracket, and
• an elastic member configured to provide an elastic force in the second axis direction by interoperating with movement of the cam,
• wherein the hinge assembly is displaceable among an unfolded state, an intermediate state, and a folded state, and wherein the cam is configured for moving in the second axis direction between the unfolded state and the intermediate state and between the intermediate state and the folded state.