Motorized suction head
A motorized suction head comprising a roller is provided, the roller being rotatable and being configured to rub the surface to be cleaned, an electric motor and a transmission for connecting the roller to the electric motor so as to rotate the roller, an on/off switch for starting and stopping the rotation of the motor, wherein the suction head further comprises a speed selector for selecting one of a plurality of rotation speeds of the electric motor.
1. A motorized suction head comprising a roller, the roller being rotatable and being configured to rub the surface to be cleaned, an electric motor and a transmission for connecting the roller to the electric motor so as to rotate the roller, an on/off switch for starting and stopping the rotation of the motor, wherein the suction head further comprises a speed selector for selecting one of a plurality of rotation speeds of the electric motor, wherein the suction head further comprises an electronic board programmed to provide a rising ramp when the electric motor is turned on and/or a falling ramp when the electric motor is turned off.
2. The motorized suction head according to claim 1 , wherein the speed selector is a manual selector.
3. The motorized suction head according to claim 1 , wherein the speed selector comprises a pushbutton.
4. The motorized suction head according to claim 1 , wherein the speed selector comprises a rheostat.
5. The motorized suction head according to claim 1 , further comprising a visual indicator for providing an indication of the speed selected by means of the selector.
6. The motorized suction head according to claim 1 , further comprising a battery for powering the electric motor.
7. The motorized suction head according to claim 1 , wherein the on/off switch is operated by the position of a component of the suction head.
8. The motorized suction head according to claim 7 , wherein the on/off switch is operated by the position of a joint of the suction pipe.
9. The motorized suction head according to claim 1 , further comprising a stop system for preventing an excessive increase in the motor load.
10. The motorized suction head according to claim 9 , wherein the stop system operates in response to a power consumption value and is configured to stop the operation of the motor when the detected power consumption value is higher than a set value.
11. The motorized suction head according to claim 1 , wherein the speed selector is arranged on the vacuum cleaner handle.
12. The motorized suction head according to claim 1 , wherein the rising ramp progresses from 0% to 100% over a first time and the falling ramp goes from 100% to 0% over a second time, wherein the first time is substantially the same as the second time.
13. The motorized suction head according to claim 12 , wherein the first time is about 0.5 seconds.