| 摘要 |
<p>An upright vacuum cleaner comprises a floor-engaging head portion 11 having a dirty air inlet 12, an upright body portion 10 pivotably mounted to the floor-engaging head portion 11 for movement between parked and in-use positions, an agitator 13 rotatably mounted across the dirty air inlet 12, a motor for driving the agitator via motor shaft 14, a pulley assembly 15 pivotably mounted for rotation between first and second positions about an axis which extends parallel to the axes of rotation of the agitator 13 and motor shaft 14, the assembly 15 including an idler pulley 16 connected to the motor shaft 14 by a first drive belt 18 and to the agitator 13 by a second drive belt 19, the idler pulley 16 being mounted for rotation about an axis which is offset from the axis of rotation of the assembly 15, and an externally-operable foot pedal 30. In use, the pulley assembly 15 is pivoted into the second position by a rotary member 22 to disconnect the drive between the motor shaft 14 and the agitator 13 when the upright body portion 10 is in its parked position or when the externally-operable foot pedal 30 is operated.</p> |
