Patent ID: 8444134

Claim:
An automatic document feeding device, adapted to an apparatus, the apparatus having a body, a first power source and a second power source disposed in the body, the first power source and the second power source driving the automatic document feeding device to transmit a paper into or out of the body, the automatic document feeding device comprising: a limiting structure, pivoted to the body and connected to the first power source, the first power source driving the limiting structure to move between a first position and a second position, the limiting structure having a limiting space; a swinging member, pivoted to the body and connected to the second power source, the second power source driving the swinging member to move between a third position and a fourth position; and a blocking member, having a first end and a second end opposing thereto, the first end physically connected to the swinging member so that the blocking member moves along with the swinging member, the second end extending from the swinging member to the limiting structure, wherein a moving path of the second end and a moving path of the limiting structure cut across each other; when the limiting structure is located at the second position, and when the swinging member moves from the fourth position to the third position, the second end is trapped into the limiting space, when the swinging member moves toward the third position, and when the limiting structure moves toward the first position, the second end is separated from the limiting space.