Bouncing core device, detachable connecting device, and paper towel rack

A bouncing core device, configured for a detachable connecting device disposed between a stand column (1) of a paper towel rack and a base (2), wherein the bouncing core device comprises:

• moving members (31), disposed inside first recessed structures (21) at a top of the base (2), the moving members (31) being connected to the detachable connecting device;
• first elastic deformation members (32), configured to push the moving members (31) upwards;
• a lateral moving member (33), disposed at a position where the moving members (31) are located, the lateral moving member (33) being configured to move left and right, and first side faces of the lateral moving member (33) being arranged opposite to second side faces of the first recessed structures (21);
• raised structures (34), formed at the first side faces or the second side faces;
• and
• second recessed structures (35), formed at the second side faces or the first side faces, each of the second recessed structures (35) being internally provided with a V-shaped bulge (351), bending portions of the V-shaped bulges (351) being arranged facing upward or downward, and the raised structures (34) being arranged inside the second recessed structures (35), wherein
• the second recessed structures (35) are configured to limit the raised structures (34) to move only clockwise or counterclockwise around edges of the V-shaped bulges (351), and a detachable connection between the stand column (1) and the base (2) can be achieved by ascending and descending of the moving members (31) relative to the first recessed structures (21).