| 主权项 |
1. A door assembly for covering an opening defined by at least one structural element of a building, the door assembly comprising:
a shutter roller rotatable about an axis of rotation; a drive mechanism configured to rotate the shutter roller about the axis of rotation;a flexible door or curtain windable on and off the shutter roller such that the flexible door or curtain is movable into retracted and extended positions by operation of the drive mechanism, the flexible door or curtain having a plurality of connected slats, each having two ends;
at least one guide rail assembly positioned on at least one side of the opening and coupled to the at least one side of the opening, each instance of the at least one guide rail assembly having:
(a) an outer track, coupled to the at least one structural element of the building and having at least a first portion extending parallel to the flexible door or curtain,(b) an inner track, coupled to the at least one structural element of the building and having at least a first portion extending parallel to the outer track and parallel to the flexible door or curtain,(c) a roller support guide, arranged fixedly between the outer track and the inner track, and(d) first and second roller guides disposed opposite one another between the inner track and the outer track, with a space maintained between the first and second roller guides; and a plurality of coupling mechanisms, each of the plurality of coupling mechanisms being affixed to an end of one or more of the plurality of slats of the door or curtain, wherein each of the plurality of coupling mechanisms is attachable to two different slats, each of the plurality of coupling mechanisms comprising:
(a) at least two door or curtain mounting brackets, each door or curtain mounting bracket having:
(i) a mounting surface configured to connect to a slat of the door or curtain, and(ii) an extending surface oriented at approximately 90 degrees with respect to the mounting surface, the extending surface having at least one endlock configured to maintain alignment of the slats of the door or curtain;(b) a roller mounting bracket having:
(i) a first roller arranged at an upper portion of the roller mounting bracket, the first roller being rotatable around an axis perpendicular to the lengthwise direction of the slats, and(ii) an extending portion, oriented at approximately 90 degrees with respect to the upper portion of the roller mounting bracket and connected to the at least one endlock; and(c) at least two second rollers, each second roller being rotatable around an axis perpendicular to the axis of rotation of the first roller and connected to the at least one endlock, the second rollers being arranged so as to be aligned with respect to each other in a direction of door or curtain propagation and offset in relation to the first roller, wherein the first roller and the second rollers are arranged so as to cooperate with the outer track, inner track, roller support guide and first and second roller guides to ensure that the door or curtain moves rollingly within the guide rail assembly even when the door or curtain is subjected to a deflecting force. |
