Automatic driving unit for toilet drain valve and drain valve assembly

An automatic driving unit for a toilet drain valve, wherein the drain valve is provided in a water tank of a toilet, and comprises a valve casing, a valve trim, and a slider;

• the valve casing is provided with a water inlet located on a sidewall and communicating with the water tank, and a drain outlet located at one end;
• the valve trim is provided in the valve casing, and abuts against the drain outlet in an openable sealing manner;
• the slider is provided at the other end of the valve casing and is in transmission connection with the valve trim;
• and the automatic driving unit comprises a driving component, and an execution component provided in the valve casing;
• the execution component comprises a fixed member and a movable member provided on the fixed member;
• the fixed member is fixed in the valve casing, and located between the valve trim and the slider;
• the movable member is movably provided on the fixed member along an axial direction of the valve casing relative to the fixed member;
• and the movable member is in transmission connection with the valve trim;
• the driving component is provided outside the valve casing, is in transmission connection with the movable member and is configured to drive the movable member to move relative to the fixed member;
• and
• the driving component is electrically connected to a sensing component on the toilet;
• and the sensing component is configured to acquire body information of a user, convert the body information into an electrical signal and transmit the electrical signal to the driving component.