Patent ID: 8800943

Claim:
A mounting bracket assembly for a ventilating fan, comprising a first bracket, a second bracket, and a bracket fixing member, characterized in that: the first bracket is provided with a U-shaped groove and is provided at an end thereof with a first supporting leg folded into an L-shape; the second bracket is provided with a U-shaped groove and is provided at an end thereof with a second supporting leg folded into an L-shape, and a root portion of the second supporting leg is provided at two sides thereof with slots; the second bracket is engaged into the U-shaped groove of the first bracket and can be slidable in the U-shaped groove of the first bracket to adjust a length of the bracket assembly; the bracket fixing member is provided with a C-shaped groove; the first bracket and the second bracket combined together are engaged and inserted into the C-shaped groove of the bracket fixing member from a side of the C-shaped groove of the bracket fixing member and can be slidable in the C-shaped groove; the bracket fixing member is engaged with the first bracket by the C-shaped groove and the first bracket and the second bracket combined together are configured to be fixed to a ventilating fan body; a bottom face of the bracket fixing member is in a recess structure; the bottom face of the bracket fixing member is provided at two ends thereof with bridge structures which are tilted downward, and ends of the bridge structures are configured to protrude more toward the ventilating fan body than the recess structure.