Shutter assembly for an automated teller machine

A dispenser shutter assembly of an automated teller machine (ATM), said dispenser shutter assembly comprising:

• a shutter operating mechanism comprising a motor assembly and a shutter plate comprising a motor comprising a drive shaft mounting a worm gear, said motor assembly attached to a frame member,
• said shutter plate moveable relative to the frame member and comprising a worm segment, said worm segment engageable with the worm gear so that, upon the worm segment being engaged with the worm gear and the worm gear being rotated by the motor, the worm segment and shutter plate are moveable between a closed position of the shutter and an open position of the shutter by sufficient rotation of the worm gear;
• said attachment means comprising a pivotable mounting to the frame member so that the worm gear is moveable out of engagement with the worm segment by pivoting of the motor assembly away from the frame member about the pivotable mounting, so that when the shutter plate is subject to an external force for moving the shutter plate from a first position corresponding to a closed position of the shutter towards a second position corresponding to an open position of the shutter, the external force thereby applied to the worm gear by the worm segment, when above a threshold force value which is lower than a force value determined to cause damage to the mechanism, moves the worm gear of the motor assembly about the pivotable mounting out of engagement with the worm segment thereby preventing damage to the shutter operating mechanism.