Selectable Roller Combing Unit for Low-Noise Debris Removal
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Solution Overview
Problem
Vacuum cleaners face challenges in effectively engaging suction with surfaces and removing debris from cleaning rollers without causing noise and vibration, as existing debriding ribs often interfere with operation or fail to prevent entanglement.
Innovation Solution
A cleaning apparatus with a combing unit featuring spaced teeth that can be toggled between active and inactive modes, mounted on isolators to absorb vibrational energy and reduce noise, and designed to contact the cleaning roller to prevent debris buildup while rotating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a debriding rib/combing unit is used to remove debris from the roller, then debris entanglement is reduced, but noise and vibration increase
Solution Approach 1:
The patent introduces an intermediary mechanism (the movable combing unit with selectable engagement) between the debris removal function and the roller operation. This allows debris removal to be achieved when needed while preventing continuous contact that causes noise and vibration, effectively mediating between conflicting requirements.
Solution Approach 2:
The combing unit is designed to be movable rather than fixed, allowing it to dynamically engage with or disengage from the roller based on operational conditions. This dynamic configuration enables the system to optimize between debris removal effectiveness and noise/vibration reduction by adjusting the engagement state.
2Reliability
If the combing unit continuously contacts the roller for debris removal, then debris entanglement is prevented, but operational interference increases
Solution Approach 1:
The combing unit's movable design allows it to be positioned to contact the roller when debris removal is needed, and repositioned to minimize interference during normal operation. This dynamic adjustment resolves the contradiction between continuous debris prevention and smooth operational flow.
Solution Approach 2:
The combing unit is designed as a separate, selectable component that can be independently engaged or disengaged from the roller system. This segmentation allows the debris removal function to be activated only when necessary, preventing continuous operational interference while maintaining debris prevention capability.
3Reliability
If projections are used to engage the roller for debris removal, then debris can be removed, but effectiveness is insufficient and operational interference occurs
Solution Approach 1:
The patent replaces direct projection engagement with an intermediary combing unit that provides more effective debris removal. This intermediary mechanism achieves superior debris removal effectiveness while being designed to minimize operational interference through its selectable engagement capability.
Solution Approach 2:
The combing unit design changes the engagement parameters (contact pressure, contact area, engagement angle) compared to traditional projections. These parameter optimizations enable more effective debris removal while reducing the likelihood of operational interference, thereby improving overall cleaning efficiency.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Effectively prevents debris entanglement on the cleaning roller, minimizes noise and vibration, and enhances the operational efficiency of the vacuum cleaner by ensuring smooth debris removal without disrupting the cleaning process.
Implementation Method 1
The combing unit may be mounted on isolators that absorb at least some of the vibrational energy transmitted by the rotating roller
Data Source
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AI summary
A cleaning apparatus comprising a housing, at least one agitator configured to be rotatably coupled to the housing, a combing unit comprising a plurality of spaced teeth configured to contact the agitator for preventing build up and removing debris, and a switch configured to cause the combing unit to move between an active mode in which the plurality of spaced teeth are configured to contact the agitator for preventing build up and removing debris, and an inactive mode in which the plurality of spaced teeth are configured to not contact the agitator. The switch may be configured to cause the combing unit to rotate about a pivot axis between the active mode and the inactive mode. The switch may be configured to convert linear motion of the switch into the rotational motion of the combing unit about the pivot axis.