| 摘要 |
A side hung closure member (10) which is intended to be mounted in a fixed outer frame (11) having a pair of opposed upright frame members (12, 13), with the closure member (10) being hingedly mounted (14) on one of the frame members (12) for movement between open and closed positions and being capable of latching and/or locking engagement with the other of the frame members (13) when in the closed position; in which the closure member (10) comprises: a rectangular frame having top and bottom frame components (15, 16) and a pair of opposed upright frame components (17, 18), a first of said upright frame components (17) being intended to be hingedly mounted on the fixed outer frame (11) and a second of the upright frame members (18) being intended to form a closing face of the closure member (10); a locking element (22) mounted at a predetermined height on the closing face (18) of the rectangular frame of the closure member (10), and co-operative with a locking component (24) at corresponding height on the adjacent upright frame member (13) of the fixed outer frame (11), when the closing face (18) is in a required vertical alignment with said upright frame member (13); and, a lifter element (26) provided on the closing face (18) of the rectangular frame of the closing member (10) and co-operative with a corresponding element (28) on the adjacent upright frame member (13), when there is downward misalignment of the locking element (22) on the closure face (18) relative to the corresponding element (24) on the adjacent upright frame member (13) of the fixed frame (11), in order to effect lifting of the closure face (18) and to restore the required vertical alignment. |
