Blade holder for a snow-clearing device

The combination of a blade and a holder for connecting said blade to a snow-clearing device having a lower edge disposed above a ground surface when operating the device, said blade mounted to said lower edge at an acute, cutting angle to the ground, and said holder connecting said blade to said lower edge such that said blade, when running into an obstacle, can pivot backward and flex upward to avoid damage thereto, and automatically resume its cutting angle after clearing the obstacle, said holder comprising a trilateral structure with three sides defining a central cavity, said three sides including a first fixing element fixed to said lower edge of the device, a second fixing element which engages the blade, and a support element connecting the first fixing element and the second fixing element, said second fixing element and said support element being directed obliquely downwards and forwards and meeting in a corner in front of the lower edge of the device, said blade being fixed to said second fixing element along only an attachment line close to said corner, each of said second fixing element and said support element being made of an elastic polymer material such that each is resilient in a transverse direction and bendable along a longitudinal edge, said second fixing element and said support element exerting on the blade a pressure spring-action directed obliquely downwards and forwards during operation of the device and, in response to overloading of the blade, buckling such that a respective longitudinal edge of said support element buckles upward into the central cavity of said trilateral structure, and a respective longitudinal edge of said second fixing element buckles forward and upward, said blade pivoting along the attachment line and moving upward with said attachment line without upward movement of the lower edge of the device.

A snow-clearing device having a lower edge disposed above a ground surface when operating the device, a blade mounted to said lower edge at an acute, cutting angle to the ground, and a holder connecting said blade to said lower edge such that said blade, when running into an obstacle, can pivot backward and flex upward to avoid damage thereto, and automatically resume its cutting angle after clearing the obstacle, said holder comprising a trilateral structure with three sides defining a central cavity, said three sides including a first fixing element fixed to said lower edge of the snow-clearing device, a second fixing element which engages the blade, and a support element connecting the first fixing element and the second fixing element, said second fixing element and said support element being directed obliquely downwards and forwards and meeting in a corner in front of the lower edge of the device, said blade being fixed to said second fixing element only along an attachment line close to said corner, each of said second fixing element and said support element being made of an elastic polymer material such that each is resilient in a transverse direction and bendable along a longitudinal edge, said second fixing element and said support element exerting on the blade a pressure spring-action directed obliquely downwards and forwards during operation of the device and, in response to overloading of the blade, buckling such that a respective longitudinal edge of said support element buckles toward the central cavity, and a respective longitudinal edge of said second fixing element buckles forward and upward, allowing the blade to pivot along the attachment line and move upward with said attachment line without upward movement of the lower edge of the device.