Patent ID: 7657967

Claim:
A brush vibrating apparatus for a vacuum cleaner comprising: a brush provided in a head portion of the vacuum cleaner and reciprocating and rotating for separating foreign substances from an object to be cleaned, the brush including a brush tub having a hollow therein and brush hairs; a pair of support units fixed to both sides of the head portion; a torsion bar configured to supply elastic force to the brush; and a driving force supply unit for supplying driving force to reciprocate the brush in a designated angle range, wherein the torsion bar passes through the brush tub such that the torsion bar is rotatably connected to one side of the brush tub and is fixed to the other side of the brush tub, and wherein one end of the torsion bar is fixed to one support unit and the other end of the torsion bar is rotatably connected to the other support unit.