Trash bag closing mechanism, commode chair, trash container and its control

A trash bag closing mechanism, comprising:

• a transmission assembly comprising a power unit and a scissor-hinge unit;
• a closing assembly comprising a first guide plate arranged on the scissor-hinge unit and a second guide plate arranged opposite to the first guide plate;
• and
• a heat sealing assembly arranged on the first guide plate and/or the second guide plate and used for heat sealing a closed trash bag;
• wherein the power unit is used to drive the scissor-hinge unit to expand and contract, which consequently drives the first guide plate to slide toward the second guide plate to realize the closing and opening of the trash bag;
• wherein the power unit comprises a second motor and a first gear connected to the second motor;
• the scissor-hinge unit comprises a fixing member, a guide groove arranged on the fixing member, a first rack received in the guide groove and meshed with the first gear, and a scissor hinge connected to the first rack.