Pivoting Sealing Plate for Vacuum Cleaner Multi-Surface Adaptability
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Solution Overview
Problem
Existing vacuum cleaners lack a universal suction inlet design that optimizes cleaning performance on various surfaces, often being either too expensive, complex, or unsuitable for dirty environments, and fail to effectively handle diverse debris types.
Innovation Solution
A vacuum cleaner suction head with pivotally mounted sealing plates that adjust to different heights and configurations, allowing for enhanced airflow and debris pickup by sealing around the suction inlet to improve suction efficiency on bare floors and carpets, while allowing large objects to pass underneath.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If variable-height suction inlets are used to move close to bare floors and away from carpeted floors, then cleaning performance on both surfaces is improved, but device complexity increases due to additional mechanisms required
Solution Approach 1:
The sealing plate is made movable relative to the housing, transitioning between raised and lowered positions to adapt to different floor surfaces. This dynamic adjustment allows the seal to maintain contact with both bare floors and carpets without requiring complex variable-height suction inlet mechanisms
Solution Approach 2:
The sealing function is extracted as a separate movable component (sealing plate) independent from the suction inlet height adjustment mechanism. This separates the sealing adaptation function from the overall height adjustment system, simplifying the overall device complexity while maintaining surface adaptability
2Adaptability or versatility
If brushroll cutoff mechanisms are added to prevent brush from striking particles on bare floors, then cleaning performance on bare floors is improved, but device complexity increases
Solution Approach 1:
The sealing function is extracted as a separate movable component that independently handles the protection of particles from brush contact, eliminating the need for additional brushroll cutoff mechanisms
Solution Approach 2:
The movable sealing plate acts as an intermediary barrier between the brush and particles on bare floors, preventing direct contact and particle projection while allowing the brush to continue rotating without complex cutoff mechanisms
3Adaptability or versatility
If movable skirt-like brushes are added to lower towards the floor when suction inlet is lowered, then cleaning performance on bare floors is improved, but device complexity increases
Solution Approach 1:
The sealing and particle protection functions are extracted into a dedicated movable sealing plate component, eliminating the need for additional movable skirt-like brush mechanisms
Solution Approach 2:
The movable sealing plate performs multiple functions: sealing around the suction inlet, preventing particle projection, and allowing airflow, replacing the need for separate skirt-like brushes with a single multi-functional 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 solution enhances cleaning performance by maintaining high airflow and efficient debris removal on multiple surfaces, including bare floors and carpets, without requiring extensive adjustments or increased complexity, thus addressing the limitations of prior designs.
Implementation Method 1
The sealing is mounted to rotate about a first pivot axis that extends in the transverse direction
Data Source
AI summary
A vacuum cleaner suction head having a housing with a support for movement in the fore-aft direction on a surface. A suction inlet extends through the housing, and has a front edge and a rear edge. A sealing plate is pivotally mounted on the bottom of the housing to rotate about a pivot axis extending in a transverse direction. The sealing plate is movable between a raised position and a lowered position. The sealing plate is mounted in a trailing configuration in which, when the sealing plate is in the lowered position, the pivot axis is at the front of the sealing plate with respect to a fore-aft direction, and a lowermost point on the lower surface of the sealing plate is located behind the pivot axis with respect to the fore-aft direction.