Suction Nozzle Locking Mechanism for Dual-Mode Surface Cleaners
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Solution Overview
Problem
Existing surface cleaning apparatuses, such as extraction cleaners, face challenges in securely attaching and detaching suction nozzles during transitions between on-the-floor and above-the-floor cleaning modes, leading to potential accidental release of the suction nozzle when using an above-the-floor vacuum hose.
Innovation Solution
Incorporating a hose connector with a locking mechanism that prevents accidental release of the suction nozzle when an above-the-floor vacuum hose is installed, and a nozzle cover that functions as a seal and handle for easy removal and attachment of the suction nozzle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a locking mechanism is added to prevent accidental release of the suction nozzle, then the reliability of the connection is improved, but the device complexity increases
Solution Approach 1:
The patent replaces complex mechanical locking systems with a simpler spring-loaded latch mechanism. The spring bias provides automatic engagement and retention forces, eliminating the need for complex multi-component locking systems while maintaining reliable connection between the hose connector and suction nozzle.
Solution Approach 2:
The locking mechanism is designed to be self-actuating through spring force. The spring-loaded latch automatically engages with the hose connector when the suction nozzle is attached, providing automatic locking without requiring additional actuators or complex control systems. The mechanism serves itself through the inherent spring bias.
2Reliability
If the suction nozzle is designed for secure attachment, then the reliability is improved, but the ease of operation for removal and attachment deteriorates
Solution Approach 1:
The patent replaces complex mechanical retention systems with a simple spring-loaded latch that engages automatically. The spring provides sufficient retention force for secure attachment while allowing easy manual release by simply pulling the suction nozzle away, eliminating the need for tools or complex release mechanisms.
Solution Approach 2:
Instead of requiring active engagement mechanisms for attachment, the design uses passive spring-loaded retention that engages automatically upon attachment. The spring force works in reverse during removal, allowing the nozzle to be easily pulled off without requiring active disengagement actions.
3Adaptability or versatility
If a hose connector is added to support both on-the-floor and above-the-floor cleaning modes, then the adaptability is improved, but the device complexity increases
Solution Approach 1:
The hose connector is designed as a universal interface that supports both on-the-floor cleaning mode (with suction nozzle attached) and above-the-floor cleaning mode (with vacuum hose attached). The same connector structure and locking mechanism handle both configurations, eliminating the need for separate connector systems for different cleaning modes.
Solution Approach 2:
The connector system is designed to be dynamically reconfigurable. The spring-loaded latch allows the connector to easily transition between holding a suction nozzle for on-the-floor cleaning and holding a vacuum hose for above-the-floor cleaning. The mechanism adapts to different attached components without requiring structural changes.
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
Ensures secure attachment and easy operation of the suction nozzle during different cleaning modes, preventing accidental release and enhancing user convenience and safety.
Implementation Method 1
a source of suction in fluid communication with the working air conduit to draw the cleaning fluid from the surface to be cleaned and through the nozzle and the working air conduit to the recovery tank
Data Source
AI summary
A surface cleaning apparatus is provided with a nozzle cover having multiple functions, including sealing an opening for an above-the-floor vacuum hose, aiding in removal of a suction nozzle from the apparatus and acting as a handle for the suction nozzle upon removal of the suction nozzle from the apparatus. A locking mechanism prevents the suction nozzle from accidentally releasing from the apparatus when the vacuum hose is installed.