Abstract: A hinge assembly has two tracks, a main bracket, at least one connecting bracket, at least one sliding hinge and at least one tilting hinge. The main bracket is mounted slidably between the tracks. The connecting bracket is mounted securely on the main bracket. The sliding hinge corresponds to and selectively holds the connecting bracket. The tilting hinge is connecting to the main bracket. With the related movement between the connecting bracket and the sliding hinge, the connecting bracket is selectively held or moved. Therefore, a moving bracket of a frame for an electronic device being attached to the tilting hinge is selectively pushed and held in a body of the frame or received in the body.