A clutch assembly for a surface treatment appliance includes an input clutch member, an output clutch member driven by the input clutch member, a motorized mechanism for effecting relative movement between the input clutch member and the output clutch member from an engaged position, in which torque
A clutch assembly for a surface treatment appliance includes an input clutch member, an output clutch member driven by the input clutch member, a motorized mechanism for effecting relative movement between the input clutch member and the output clutch member from an engaged position, in which torque is transmitted by the output clutch member to an output, to a disengaged position, in which torque is not transmitted to the output, and a control system for actuating the motorized mechanism.
대표청구항▼
1. A clutch assembly for a surface treatment appliance comprising a vacuum motor and an agitator, the clutch assembly comprising an input clutch member arranged to be driven by the vacuum motor, an output clutch member arranged to be driven by the input clutch member, the output clutch member arrang
1. A clutch assembly for a surface treatment appliance comprising a vacuum motor and an agitator, the clutch assembly comprising an input clutch member arranged to be driven by the vacuum motor, an output clutch member arranged to be driven by the input clutch member, the output clutch member arranged to drive the agitator, a motorized mechanism comprising a gear mechanism and an actuation motor, not the vacuum motor, for actuating the gear mechanism to effect relative movement between the input clutch member and the output clutch member from an engaged position, in which torque is transmitted by the output clutch member to the agitator, to a disengaged position, in which torque is not transmitted to the agitator, and a control system for actuating the motorized mechanism, the control system comprising an electrical controller that controls the actuation motor based on a received signal in response to the difference in rotational speeds between the input and output clutch members. 2. The clutch assembly of claim 1, wherein the motorized mechanism is configured to engage an actuator connected to the output clutch member. 3. The clutch assembly of claim 2, wherein the actuator is connected to the output clutch member by a bearing to allow the output clutch member to rotate relative to the actuator. 4. The clutch assembly of claim 2, wherein the motorized mechanism is configured to move the actuator towards or away from the input clutch member to effect said relative movement between the input clutch member and the output clutch member. 5. The clutch assembly of claim 1, comprising a resilient member for urging the output clutch member towards the engaged position, and wherein the motorized mechanism is configured to move the output clutch member towards the disengaged position against the bias of the resilient member. 6. The clutch assembly of claim 1, comprising a sensor for detecting the rotational speed of the output clutch member, and for outputting to the control system a signal indicative of the detected speed. 7. The clutch assembly of claim 6, comprising a further sensor for detecting the rotational speed of the input clutch member, and for outputting to the control system a signal indicative of the detected speed. 8. A surface treatment appliance comprising a vacuum motor and an agitator, an input clutch member arranged to be driven by the vacuum motor, an output clutch member arranged to be driven by the input clutch member, the output clutch member arranged to drive the agitator, a motorized mechanism comprising a gear mechanism and an actuation motor, not the vacuum motor, for actuating the gear mechanism to effect relative movement between the input clutch member and the output clutch member from an engaged position, in which torque is transmitted by the output clutch member to the agitator, to a disengaged position, in which torque is not transmitted to the agitator, and a control system for actuating the motorized mechanism, the control system comprising an electrical controller that controls the actuation motor based on a received signal in response to the difference in rotational speeds between the input and output clutch members. 9. The appliance of claim 8, wherein the motorized mechanism is configured to engage an actuator connected to the output clutch member. 10. The appliance of claim 9, wherein the actuator is connected to the output clutch member by a bearing to allow the output clutch member to rotate relative to the actuator. 11. The appliance of claim 9, wherein the motorized mechanism is configured to move the actuator towards or away from the input clutch member to effect said relative movement between the input clutch member and the output clutch member. 12. The appliance of claim 8, comprising a resilient member for urging the output clutch member towards the engaged position, and wherein the motorized mechanism is configured to move the output clutch member towards the disengaged position against the bias of the resilient member. 13. The appliance of claim 8, comprising a sensor for detecting the rotational speed of the output clutch member, and for outputting to the control system a signal indicative of the detected speed. 14. The appliance of claim 13, comprising a further sensor for detecting the rotational speed of the input clutch member, and for outputting to the control system a signal indicative of the detected speed.
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이 특허에 인용된 특허 (75)
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