Patent ID: 8424246
Filing Date: 2013-04-23
Classification: E05C,E05F,E06B

Abstract:
1. An anti-fall device for a window sash being connected between a window sash and a window frame and comprising a window-sash fixing block, a window-frame fixing block, an elastic metal wire, and a pipe, characterized in that the elastic metal wire connects the window-sash fixing block and the window-frame fixing block, the window-sash fixing block is defined with a through hole, the pipe is inserted in the through hole in the window-sash fixing block, one end of the metal wire is fixed to the window-frame fixing block, and the other end of the metal wire is inserted into the pipe through the through hole of the window-sash fixing block and fixed with a limiting block, the limiting block has a diameter greater than a diameter of the through hole, wherein when the window sash is closed, the upper end of the steel cord enters and hides in the pipe, when the window sash is opened, the metal wire is pulled out of the pipe.