Rotatable Vacuum Cleaner Nozzle for Low-Force Surface Switching
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Solution Overview
Problem
Existing vacuum cleaner nozzles lack an efficient mechanism to switch between different cleaning conditions for various surfaces, requiring complex valve mechanisms and increased force to rotate, which can lead to wear and reduced suction efficiency.
Innovation Solution
A nozzle design with a rotatable base that allows for easy switching between cleaning sides without rotating the entire body, featuring separate cleaning sides for hard and soft surfaces, with a locking mechanism to prevent unintentional rotation and a suction passage system that directs airflow based on the active cleaning side, reducing wear and maintaining suction efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a valve mechanism is used to block the cleaning side not in use, then cleaning side protection is achieved, but device complexity increases
Solution Approach 1:
The patent removes the valve mechanism from the system entirely. Instead of using a valve to block airflow to the non-active cleaning side, the design allows both cleaning sides to remain exposed to airflow simultaneously, with the inactive side protected by a removable cover that can be taken off for cleaning access.
Solution Approach 2:
The base is divided into two separate cleaning sides (first cleaning side and second cleaning side) that can be independently accessed. The cover segments the protection function, covering only the inactive cleaning side while leaving the active side exposed, eliminating the need for a valve-based airflow control system.
2Adaptability or versatility
If a valve mechanism is used to control airflow, then cleaning side selection is achieved, but suction efficiency decreases due to flow resistance
Solution Approach 1:
The system dynamically adapts to different cleaning needs by allowing the user to rotate the base to different orientations (first position, second position, third position) rather than using a static valve mechanism. This dynamic reconfiguration maintains optimal airflow paths for each cleaning side without introducing flow resistance from valves.
Solution Approach 2:
The base is designed to perform multiple cleaning functions with different surface types (hard floors, soft floors, carpets) through rotational positioning. The same base structure serves multiple purposes by orienting different cleaning sides toward the surface, eliminating the need for separate nozzle designs for different surfaces.
3Adaptability or versatility
If the entire body is rotated to switch cleaning sides, then cleaning condition selection is achieved, but force requirement increases
Solution Approach 1:
The nozzle is segmented into a stationary body and a rotatable base. Only the base (containing the cleaning sides) needs to be rotated, not the entire nozzle body. This segmentation reduces the moment of inertia and the force required for rotation, while still achieving cleaning side selection through base orientation changes.
Solution Approach 2:
The patent introduces rotational movement as a new dimension for controlling cleaning side selection. Instead of moving components linearly or using complex valve mechanisms, the solution rotates the base around a vertical axis, creating a simple rotational degree of freedom that enables easy switching between cleaning sides with minimal force.
4Productivity
If cleaning sides are exposed continuously, then airflow is maintained, but debris accumulation occurs
Solution Approach 1:
The cover is designed to be placed over the inactive cleaning side before it becomes active, preventing debris accumulation in advance. When the base is rotated to bring a different cleaning side into use, the previously active side is already covered and protected, eliminating the need for cleaning operations during transitions.
Solution Approach 2:
The cover acts as an intermediary element between the cleaning sides and the environment. It selectively covers the inactive cleaning side while allowing the active side to remain exposed to airflow, mediating between the need for continuous airflow and the need to prevent debris accumulation on inactive surfaces.
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 on both hard and soft surfaces with reduced user effort, minimized debris accumulation, and improved suction power by allowing the unused cleaning side to be protected and cleaned internally, while maintaining airtightness and reducing noise and flow resistance.
Implementation Method 1
the base is rotatable around a rotational axis that is parallel to the longitudinal axis of the base to move the base between the respective cleaning conditions
Implementation Method 2
a suction passage is formed through the base to communicate the suction chamber with outside the body
Data Source
AI summary
The present application relates to a nozzle for a vacuum cleaner. The nozzle comprises a body (2) and a base (3). The base (3) has a longitudinal axis, and at least two cleaning sides (17, 18) configured to act on a surface in respective cleaning conditions. The base (3) is rotatable around a rotational axis (A-A) that is parallel to the longitudinal axis of the base to move the base (3) between the respective cleaning conditions.