Electronic device and cover assembly

A cover assembly applied to an electronic device, wherein the electronic device includes a first component and a second component, the second component has an opening, and the opening is between the first component and the second component, the cover assembly comprising:

• a cover element disposed in the opening, attached to the second component and abutted against the first component;
• at least one first moving element connected to the cover element and including at least one first moving part;
• at least one second moving element connected to the second component and including at least one second moving part, wherein the first moving part is disposed corresponding to the second moving part, and the second moving part guides the first moving part to move;
• and
• an elastic element connected between the first moving element and the second moving element, wherein when the first component rotates relatively to the second component, the elastic element provides an elastic force to make the cover element continuously abutted against the first component and cover the opening.