Patent ID: 9670697
Date: 2017-06-06
CPC Classifications: A62C,E05B,E05Y,E06B,F24F

Claim:
1. A door device with pressure difference mitigating mechanism, comprising: a door divided into a hanging door portion and a door-end door portion pivotally supported by the hanging door portion; a handle for opening and closing the door; a door closer; a hinge closer for supporting and rotating the door-end door portion with respect to the hanging door portion and having a pressure in a closing direction, a first latch for latching the door-end door portion to a door frame; and a second latch for latching a left side of the door-end door portion to a right side of the hanging door portion, wherein relationships are satisfied in which D D A LB PA PB and wherein one side of the hanging door portion defines a notched opening and upper and lower bearing portions, a stepped contracted portion of the door-end door portion is fitted in the notched opening and the door-end door portion is pivotally supported by the hinge closer, and a rotating shaft of the door-end door portion pivotally supported by the hanging door portion is not made eccentric but is set at a center of the door-end door portion, and the second latch is a roller catch or a magnet catch.