Floor Cleaning Nozzle with Cylindrical Guide for Easy Roller Removal
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Solution Overview
Problem
The existing designs for floor cleaning devices, such as vacuum cleaners, face challenges in the easy removal and reinsertion of the floor cleaning roller, which can become complicated due to the design of the nozzle and the interaction with the cylindrical body, leading to difficulties in cleaning and maintenance.
Innovation Solution
A nozzle design for floor cleaning devices that incorporates a cylindrical body extending over at least 25% of the nozzle housing's width, allowing for guided pre-alignment and easy removal/reinsertion of the floor cleaning roller, with features like asymmetric attachment, a disk-shaped guide section, and self-centering toothing for simplified operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If the floor cleaning roller is designed to be removable for cleaning, then maintenance accessibility is improved, but the removal and reinsertion process becomes complicated
Solution Approach 1:
The cylindrical body is pre-positioned to extend from the nozzle housing, creating a guide path before the floor cleaning roller is inserted. This preliminary arrangement of the cylindrical body enables automatic alignment and simplifies the insertion process, resolving the contradiction between removable design and easy reinsertion.
2Ease of operation
If the cylindrical body extends over a sufficient length to guide the floor cleaning roller, then ease of insertion is improved, but the device complexity increases
Solution Approach 1:
The cylindrical body serves multiple functions simultaneously: it acts as a structural support element, a guide for the floor cleaning roller, and a component that defines the insertion path. By making the cylindrical body multi-functional, the design achieves effective guidance without adding separate guiding mechanisms, thus avoiding increased device complexity.
Data Source
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AI summary
The nozzle (100) has a nozzle casing (110) provided with a floor cleaning roller movable inside and outside of nozzle casing and rotatable with respect to nozzle casing during an operation of floor cleaning device around a rotational axis (270). A cylindrical portion (250) is extended over 25% of width of nozzle casing, parallel to rotational axis, during operation of floor cleaning device. The floor cleaning roller and cylindrical portion are arranged such that the floor cleaning roller is contacted with the cylindrical portion when moving inside and outside of nozzle casing.