Universal vacuum cleaner nozzle
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Solution Overview
Problem
Vacuum cleaner nozzles struggle to effectively clean both smooth floors and textile coverings without an adjustment mechanism, requiring increased construction complexity and user effort to switch between modes.
Innovation Solution
A vacuum cleaner floor nozzle with a sliding base featuring a front and rear cylinder jacket section, allowing for stepless pivoting and continuous floor contact, ensuring a consistent sealing effect and adjustable air flow for both smooth and textured surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the soleplate is designed for surface contact with the ground to enable sliding on textile floor coverings, then the cleaning performance on carpets is improved, but the air resistance increases and suction air flow volume decreases when used on hard floors
Solution Approach 1:
The patent applies the dynamics principle by making the soleplate height adjustable through a height adjustment mechanism. This allows the soleplate to dynamically change its position relative to the floor surface, transitioning between a lower position for carpet cleaning and a higher position for hard floor cleaning. The adjustable design enables the vacuum cleaner to adapt its structure to different working conditions, optimizing performance for each floor type without sacrificing functionality for the other.
2Adaptability or versatility
If an adjustment mechanism is added to change the ground clearance of the soleplate, then the versatility for different floor coverings is improved, but the device complexity increases
Solution Approach 1:
The patent replaces complex mechanical adjustment mechanisms with a simpler design. The height adjustment mechanism uses a brake device that can be actuated by the user to lock the soleplate at different heights, eliminating the need for complex motors, sensors, or automated control systems. This mechanical substitution maintains versatility while significantly reducing device complexity.
Solution Approach 2:
The height adjustment mechanism is designed to be manually operable by the user without requiring additional power sources or complex control systems. The brake device allows the user to independently adjust and lock the soleplate height based on the floor type, enabling self-service operation and reducing overall system complexity.
3Productivity
If the soleplate maintains a sufficient distance from the floor surface for hard floor cleaning, then the suction air flow is improved, but the contact pressure increases and may cause damage to the floor surface
Solution Approach 1:
The adjustable height mechanism allows the soleplate to dynamically adapt its distance from the floor surface. When cleaning hard floors, the soleplate is positioned higher to maintain sufficient suction air flow while reducing contact pressure. When cleaning carpets, the soleplate is lowered to increase contact pressure for effective cleaning. This dynamic adjustment resolves the contradiction by allowing optimal settings for each floor type.
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
Enables efficient cleaning of carpets and hard floors with reduced user effort, maintaining effective suction and minimizing contact pressure, while allowing for precise control of air flow and mechanical interaction with textile materials.
Implementation Method 1
the suction air flow must be guided completely along the floor surface
Implementation Method 2
The sliding surface of the vacuum cleaner floor nozzle, designed in sections as a cylinder jacket, enables stepless pivoting about the axis of symmetry
Data Source
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AI summary
A vacuum cleaner floor nozzle (1) with a housing (1a, 1b) and a sliding base arranged on the underside of the housing, wherein a suction opening (4) extending in a transverse direction (y) is formed in the sliding base, which is bounded by a suction opening edge (6a) leading in the working direction (x) and a suction opening edge (6b) trailing in the working direction (x). According to the invention, the sliding base has a front cylindrical shell section (7a) in front of the front suction opening edge (6a) and a rear cylindrical shell section (7b) behind the rear suction opening edge (6b). The front cylindrical shell section extends in a first radius (r1) and the rear cylindrical shell section (7b) in a second radius (r2) around a common axis of symmetry (8) extending in the transverse direction (y).