Patent ID: 11922752

Abstract:
In an illegal-act detecting mechanism including an opening/closing member for detecting an illegal act and preventing pullout, at the time of stopping the opening/closing member at an initial rotation position, it is prevented that a stop position is deviated due to overrun by an inertial force of a motor. The illegal-act detecting mechanism includes an opening/closing member 50 that permits passage of a paper sheet at the initial rotation position, and blocks passage of the paper sheet at a non-initial rotation position deviated from the initial rotation position, a rotary member 70 that integrally rotates with the opening/closing member, a driving member 90 pivotally supported so as to be able to rotate relative to the opening/closing member, and a drive transmission mechanism 100. The drive transmission mechanism includes at least one driven piece provided in the rotary member, at least one driving piece that is provided in the driving member and intermittently drives and rotates the rotary member, and a buffer member 101 that biases the driven piece and the driving piece in a direction away from each other.