BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a door opening and closing apparatus for a door, which is capable of opening and closing an entrance of an architectural structure vertically, and more particularly, The first and second links 51 and 52 are axially connected to the shaft portion 21 on the side of the panel with a hinge shaft portion 53 obliquely in the form of a zigzag, The first and second links 51 and 52 are protruded from the rear A to the front B so as to prevent the erroneous operation from being erroneous by installing the reinforcing bar 60 vertically in front of the roll 54, The present invention is characterized in that the conventional problem of causing malfunctioning, that is, causing problems or causing troubles in the opening and closing operation of the door panel 3, and opening and closing of the door panel 3 is prevented.
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