Housing assembly

The invention relates to the technical field of electronic products, in particular to a shell assembly which comprises a shell and a button. The shell is provided with a pen groove and an opening which are communicated. The pen groove is provided with a first end and a second end which are located on the long axis of the pen groove and are opposite, and the opening extends from the first end to the second end. The pen groove is used for containing a touch pen. The button comprises an operation part and an abutting part which are connected. The operating part is pivoted to the shell so that the operating part can pivot between an initial position and a push-out position, and the abutting part is located in the pen groove. When the operation part is pivoted to the push-out position from the initial position, the abutting part can move towards the opening from the pen groove, so that the touch pen located in the pen groove is pushed out of the pen groove, and the user experience is improved while the touch pen i