Switching device for delayed unlocking function

A switching device for delayed unlocking function,

• wherein the switching device is disposed at a flat-push type emergency door-lock device, the flat-push type emergency door-lock device being is disposed at an emergency door board, the flat-push type emergency door-lock device including comprises a door-lock base, and a flat-push rod disposed at the door-lock base, and a concave groove being formed on one side of the flat-push rod facing the door-lock base,
• wherein the switching device comprises:
• a switching-device base, fixed on the door-lock base;
• a pushing swing arm, pivoted to the switching-device base, including a stopper, wherein when the pushing swing arm is driven, the stopper is moved between a stop position and an avoidance position, wherein the stopper is switchably at the avoidance position in a delayed unlocking function disabled state and is preset at the stop position in a delayed unlocking function enabled state;
• a linkage rod, pivoted to the door-lock base, connected to the flat-push rod in a coherent manner;
• a sensing assembly, fixed on the switching-device base, disposed corresponding to the linkage rod, used to send an unlocking-triggering signal by sensing that the linkage rod changes from being in contact with the sensing assembly to being separated from the sensing assembly according to the flat-push rod is pushed in the delayed unlocking function enabled state;
• a timing control assembly, electrically connected to the sensing assembly, thereby sending a state-switching signal after the unlocking-triggering signal is received and a predetermined delay time is passed;
• and
• an electromagnetic traction assembly, disposed at the switching-device base, dragging the pushing swing arm to cause the stopper to move from the stop position to the avoidance position after receiving the state-switching signal;
• wherein when the stopper is at the stop position, the flat-push rod is blocked to prevent the flat-push rod from being pushed and prohibit unlocking;
• wherein when the stopper is at the avoidance position, the stopper avoids the flat-push rod corresponding to the concave groove, thereby allowing the flat-push rod to continue to be pushed to complete unlocking.