Unlocking assembly, human body fixing apparatus and unlocking method for the unlocking assembly

An unlocking assembly, comprising a fixing plate, at least one locking main body, and a flexible component, wherein

• the fixing plate is provided with a fixing hole, and the locking main body is movably mounted in the fixing hole;
• the flexible component is connected to the locking main body, and the flexible component is configured to drive the locking main body to move in a protruding direction from the fixing hole;
• the flexible component is disposed in the fixing plate and below the locking main body, and the flexible component is in an expanding state or a compressed state;
• when the flexible component is in the expanding state, the locking main body protrudes out of the fixing hole;
• when the flexible component is in the compressed state, the locking main body is inserted into the fixing hole;
• the locking main body is used to fix a low-temperature thermoplastic sheet onto the fixing plate to form an accommodating cavity between the low-temperature thermoplastic sheet and the fixing plate;
• the unlocking assembly further comprises an inflating and deflating component;
• an end of the flexible component extends out of the fixing plate to be connected to the inflating and deflating component, and the inflating and deflating component is configured to control the flexible component to switch between the expanding state and the compressed state;
• the flexible component comprises an inflatable hose;
• the fixing plate is provided with a guide groove, the inflatable hose is disposed in the guide groove, when the inflatable hose is in the expanding state, the locking main body is lifted up and to be in an unlocked state, when the inflatable hose is in the compressed state, the locking main body is locked;
• the at least one locking main body comprises a plurality of locking main bodies, and the plurality of locking main bodies are spaced apart along the inflatable hose.