Vacuum Cleaner Floor Seal With Movable Plates for Surface Adaptation
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Solution Overview
Problem
Existing vacuum cleaners lack a universal suction inlet design that optimizes cleaning performance on various surfaces without being excessively expensive or complicated, and often struggle with debris of different shapes and properties.
Innovation Solution
A vacuum cleaner suction head with movable front and rear sealing plates that adjust their position relative to the surface, creating a partial seal to enhance airflow and debris pickup, particularly effective on bare floors and carpets by pivoting to accommodate debris and maintain airflow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed suction inlet design is used, then the device structure is simple, but cleaning performance on various surfaces is insufficient
Solution Approach 1:
The suction inlet includes a movable sealing plate that can dynamically adjust its position between a first position (contacting the surface) and a second position (retracted). This dynamic adjustment allows the inlet to adapt to different surface conditions and debris types, resolving the contradiction between maintaining simple structure and achieving versatile cleaning performance.
2Productivity
If the suction inlet moves close to bare floors, then cleaning performance on bare floors improves, but debris may be struck and projected away by the brush
Solution Approach 1:
The sealing plate dynamically adjusts its position based on the surface type. When cleaning bare floors, the plate contacts the surface to seal the inlet close to the floor, maximizing suction effectiveness. When transitioning to carpeted surfaces, the plate retracts to allow brush contact without projecting debris away, thus resolving the contradiction between cleaning effectiveness and debris projection.
Solution Approach 2:
The suction inlet is segmented into movable and fixed components, with the sealing plate being movable. This segmentation allows the sealing plate to independently adjust its position to prevent debris projection while maintaining effective sealing, resolving the contradiction between close-floor cleaning and debris control.
3Object-generated harmful factors
If a brushroll cutoff mechanism is added, then debris projection is prevented, but the device becomes more complicated
Solution Approach 1:
Instead of adding a complex brushroll cutoff mechanism, the invention uses a dynamically adjustable sealing plate that prevents debris projection by maintaining proper sealing. The movable plate naturally controls debris flow based on surface type, eliminating the need for additional cutoff mechanisms and resolving the contradiction between debris prevention and device simplicity.
4Productivity
If a movable sealing plate is added, then cleaning efficiency on bare floors improves, but the device structure becomes more complex
Solution Approach 1:
The sealing plate is designed as a simple movable component that can transition between two positions. This dynamic design improves cleaning efficiency on bare floors by enabling effective sealing when needed, while maintaining relative structural simplicity through the use of a single movable element rather than complex mechanisms.
Solution Approach 2:
The movable sealing plate serves multiple functions: it seals the suction inlet on bare floors to improve cleaning efficiency, prevents debris projection when the brush contacts the surface, and adapts to different surface types. This multi-functionality resolves the contradiction between improved cleaning efficiency and increased complexity by consolidating multiple benefits into a single component.
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
The design improves cleaning efficiency by increasing negative pressure and airflow, effectively picking up small and dense particles, including those in cracks and seams, while preventing debris from being pushed ahead, thus enhancing overall cleaning performance across different surfaces.
Implementation Method 1
The design improves cleaning efficiency by increasing negative pressure and airflow
Data Source
AI summary
A vacuum cleaner suction head having a housing, one or more support to support the housing on a surface to be cleaned, a suction inlet and front and rear sealing plates. The front and rear sealing plates extend along the front and rear edges of the suction inlet, respectively. the sealing plates are movable between raised positions in which the lower surfaces of the plates are close to the housing, and lowered positions in which the lower surfaces of the plates are remote from the housing. The front and rear plates are movable from the lowered position to the raised position by contact with debris on the surface to be cleaned.