INJURIOUS INSECT MOVEMENT PREVENTION NET BODY OF GRATING

摘要

PROBLEM TO BE SOLVED: To provide an injurious insect movement prevention net body of a grating, capable of preventing an injurious insect such as a mosquito and a fly from entering/exiting through the grating for covering a side ditch or the like, even with a simple structure.SOLUTION: The injurious insect movement prevention net body comprises a rectangular outer frame 12 placed in an opening bottom part 51, a frame 14a and a frame 14b for connecting one side 12a with an opposite side 12b of the outer frame 12, an inner frame 15a openably closably hinged as indicated in Fig. 3(B) via a hinge (not shown) on the one side 12a of the outer frame 12 in an area enclosed by the outer frame 12, the frame 14a and the frame 14b and not fixing the frame 14b, and a weight 18 installed on the opposite side 12b by a wire member 19 and suspended via the outer frame 12.