Quick release structure of rear shell of all-in-one machine

The invention discloses a quick release structure of an all-in-one machine rear shell. The quick release structure comprises a stand column and a rear shell. The stand column is used for fixing a displayer, a hardware installation cavity is formed in the stand column, a hardware installation opening is formed in the stand column, a first sliding fit part is formed on the stand column, a second sliding fit part is formed on the rear shell, and the second sliding fit part is in sliding fit with the first sliding fit part, so that the rear shell slides downwards to block the hardware installation opening or slides upwards to open the hardware installation opening; the stand column is further provided with a first abutting part and a first clamping part, the rear shell is further provided with a second abutting part and an elastic piece with a second clamping part, and the first abutting part is located on the path that the second abutting part slides downwards along the rear shell. When the first abutting part a