| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide double door which enables a resident to let a visitor in, by identifying the visitor in a state of facing the visitor, which enables ventilation and daylighting as needed, and which can ensure indoor privacy by blocking the line of sight. <P>SOLUTION: A first hinge piece 22 and a second hinge piece 23 are provided so as to be each independently turnable about a shaft 20 a first hinge which is fixed to a hinge piece 21 for fixing the jamb of a door opening; an outer door is fixed to the first hinge piece; and an inner door is fixed to a third hinge piece 26 of a second hinge, which is turnably provided in an extension part of the second hinge piece. (A) represents the state where both the inner and outer doors are closed; (B) represents the state where both the inner and outer doors are opened; (C) represents a state where the inner door is opened inwardly to this side; and (D) represents a state where the outer door is opened outwardly. After identifying the visitor in the state (C) through the outer door which is composed of a steel lattice door and which enables identification of the visitor, and thereafter the resident lets the visitor in by the state (D). <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
