Modular Vacuum-Cleaner Nozzle Assembly to Reduce System Complexity
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Solution Overview
Problem
Existing vacuum-cleaner nozzle systems are complex and prone to malfunction, with limited geometric adjustments, requiring multiple specialized nozzles that increase material usage and complexity, making them less effective for various cleaning situations and difficult to use professionally.
Innovation Solution
A convertible nozzle assembly with a base nozzle and two expansion fittings of different widths, allowing for three suction configurations by connecting the base nozzle to each expansion fitting, which reduces material usage and simplifies cleaning by providing adaptable suction paths and improved stability through a single connecting point and snap-fit locking mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple specialized nozzles are used for different cleaning situations, then adaptability is improved, but device complexity and material usage increase
Solution Approach 1:
The base nozzle is designed with a universal connection interface that can accommodate multiple expansion fittings of different geometries. The standardized seat and connecting point allow a single base nozzle to perform multiple cleaning functions by simply changing the expansion fitting, eliminating the need for multiple specialized nozzles and reducing overall system complexity.
Solution Approach 2:
The nozzle system is divided into modular components: a base nozzle and interchangeable expansion fittings. This segmentation allows each component to be optimized independently while maintaining overall adaptability. The base nozzle provides the core suction function, while separate expansion fittings provide different geometric configurations for various cleaning applications.
2Adaptability or versatility
If multiple specialized nozzles are used for different cleaning situations, then adaptability is improved, but material usage increases
Solution Approach 1:
Instead of manufacturing multiple complete nozzles for different applications, the invention uses a single base nozzle that can work with various expansion fittings. This universal design significantly reduces material consumption while maintaining the ability to handle different cleaning situations through geometric changes provided by the interchangeable fittings.
Solution Approach 2:
The expansion fittings are designed to attach to the base nozzle in a nested configuration, where the fitting integrates with the base nozzle's connection interface. This nesting approach allows multiple functional configurations to be achieved without requiring separate complete nozzle assemblies, thereby reducing overall material usage.
3Adaptability or versatility
If multiple connecting points are used for expansion stages, then adaptability is improved, but reliability decreases due to susceptibility to malfunction
Solution Approach 1:
The invention extracts and consolidates the connection function into a single standardized interface between the base nozzle and expansion fittings. By eliminating multiple connecting points and stages, the design reduces the number of potential failure points while maintaining adaptability through the interchangeable nature of the expansion fittings that attach to this single robust connection point.
4Adaptability or versatility
If base nozzle serves merely for connection to expansion fittings, then adaptability is improved, but ease of operation decreases
Solution Approach 1:
The base nozzle is designed to be universally functional - it can operate independently as a complete cleaning appliance for certain applications, and it can also serve as a connection platform for expansion fittings to create more complex configurations. This dual capability ensures ease of operation by allowing users to select the simplest effective configuration for each cleaning task.
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 enables multiple suction configurations with reduced material complexity, increased effectiveness, and stability, allowing for efficient cleaning of various surfaces with fewer parts, making it suitable for professional use and reducing transportation and storage needs.
Implementation Method 1
a snap-fit locking mechanism
Implementation Method 2
aspiration through the base nozzle draws air upward from the suction mouth
Data Source
AI summary
A vacuum-cleaner nozzle assembly has a base nozzle forming a downwardly open suction mouth having a lower edge and of a predetermined horizontal width measured in a direction transverse to a working direction of the base nozzle. A first and second expansion fitting each form a respective downwardly open suction mouth of a predetermined horizontal width substantially greater than the width of the mouth of the base nozzle, the width of the second fitting being greater than that of the first fitting. Each expansion fitting has an upwardly open seat complementary to and fittable with the lower edge of the base nozzle and a suction port in the seat such that, when the base nozzlenestle is fitted to the seat, aspiration through the base nozzle draws air upward from the suction mouth of the respective expansion fitting.