OPENABLE GRATING

摘要

The present invention relates to a grating capable of being opened including a foldable grating (10) connecting a first grating (11) and a second grating (12) with a hinge (13), wherein the grating is supported by a frame and the grating is divided into two parts; upper and lower rails (30, 31) installed on an inner wall of the frame (20) and guided by wheels (16) joined to the first grating (11) to move to the second grating (12) when being folded; and upper and lower handles (17, 18) installed on the lower part of the first grating (11) and the upper part of the second grating (12). The lower rail (31) supports the wheels (16) of the first grating (11) and has a width larger than that of the upper rail (30) to support a load of the foldable grating (10). Additionally, the grating capable of being opened includes a grating supporting rod (40) joined to a grating supporting rod hole (41) formed on a lateral wall (14) of the grating around a hinge shaft where the second grating (12) is open and fixed to a lateral wall of the frame (20); a spring supporter (40) installed on the bottom surface of the frame to be parallel to the grating supporting rod (40); and a spring (60) coaxially inserted into the grating supporting rod (40), having one end fixed to the grating supporting rod (40) and the other end fixed to the second grating, and providing an elastic force to open the second grating (12). A latch plate (19) is additionally joined to a lateral wall of the second grating (12). A latch-fixing groove (32) is formed on the lower rail (31) correspondingly.