The invention relates to a holder for connecting a blade (7) to the lower edge (6) of a snow-clearing device, such that the blade is given an acute, cutting angle to the base and can be folded backwards, thereby avoiding damage when running into an obstacle, and automatically resume its cutting angle after passing the obstacle. The holder comprises a trilateral hollow beam (1), the three sides of the beam forming respectively: a first fixing element (3) which is adapted to be fixed to the lower edge (6) of the snow-clearing device; a second fixing element (4) which is adapted to engage the back of the blade (7), and a support element (5) connecting the other two elements (3, 4). At least the second fixing element (4) and the support element (5) are made of an elastic polymer material. The hollow beam is adapted to fix the blade along a line along the lower part of the second fixing element (4) close to a corner of the beam, and the elastic elements (4, 5) are adapted, on overloading, to be buckled, the support element (5) being buckled towards the cavity (2) of the beam, and the second fixing element (4) being buckled forwards/upwards.