SG10201804819VA - A type of invisible protective grille - Google Patents

Abstract

A TYPE OF INVISIBLE PROTECTIVE GRILLE [0040] invention of invisible grille, includes protection frame, n x number of steel bars, and 2 x n screw caps to each bar, whereby n≥3; the protective grille is composed of two parallel horizontal, and two parallel vertical frames. A threaded insert is fitted to the end of each steel bar, and the steel bar and the screw cap are threaded together. The screw caps that fix onto the two ends of the steel bars are respectively arranged on the parallel horizontal or vertical frames, the smaller end of the screw goes through a hole on the inside of the horizontal frame or the vertical frame, while the larger cap end is located on the outside the horizontal frame or the vertical frame. The two ends of the steel bar are respectively parallel other, the horizontal or vertical frames. When assembling the product, there is no need to weld it, and there is no need to drill holes into the original window frame or wall; instead simply use nail-free glue to fix it into the recess of the window frame. Compared to existing similar this has advantages convenient nstallation, adjustment of the tightness of the steel bars, as well as replacement of damaged steel bars. It also looks pleasant, is more secure and harder wearing. FIG. 1.