Cleaning Roller Gear Shifting for Wiping and Regeneration Speed
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wet cleaning devices lack the ability to variably adjust the rotational speed of the cleaning roller, which is essential for effective wiping and regeneration operations.
Innovation Solution
A gear unit connects the cover element and roller axis, allowing the roller to switch between different gear stages, enabling the cleaning roller to rotate at varying speeds by shifting the cover element, thereby changing the gear ratio and rotational speed during wiping and regeneration operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the cleaning roller rotates at high speed during regeneration operation, then dirt and liquid are effectively expelled from the cleaning roller, but the cleaning roller cannot maintain efficient contact with the surface during wiping operation
Solution Approach 1:
The patent applies dynamics by making the roller cover movable between open and closed positions, which dynamically changes the gear ratio through the gear unit. When the roller cover is closed during regeneration, a first gear stage provides high rotational speed for effective dirt expulsion. When the roller cover is open during wiping, a second gear stage provides reduced rotational speed for efficient surface contact. This dynamic adjustment resolves the contradiction between high-speed regeneration efficiency and low-speed wiping contact quality.
2Adaptability or versatility
If a gear unit is added to enable variable rotational speed, then the cleaning roller can switch between different gear stages for optimized wiping and regeneration, but the device complexity increases
Solution Approach 1:
The patent merges the gear unit with the roller cover structure, combining the housing function with the gear transmission function. The gear unit is integrated into the roller cover assembly, sharing structural elements and space. This merging approach enables variable rotational speed through two gear stages while minimizing the increase in device complexity, as the gear components are incorporated within the existing roller cover framework rather than adding separate external mechanisms.
3Speed
If the cover element is moved into the opening area to actuate the transmission, then the cleaning roller rotates at higher speed for regeneration, but the structural space required for movement increases
Solution Approach 1:
The patent applies the nested doll principle by positioning the cover element such that it moves into the opening area of the roller cover, which is a space already defined by the device structure. The cover element utilizes the existing opening area volume for its displacement movement, rather than requiring additional external space. This nesting approach enables the cover element to actuate the transmission and achieve high roller rotational speed while minimizing the volume required for movement.
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
This solution allows for optimized cleaning by increasing the rotational speed during regeneration to effectively expel dirt and liquid, while reducing speed during wiping to maintain efficient contact with the surface, enhancing the overall cleaning process.
Implementation Method 1
a gear unit connecting the roller axis to a roller drive, such that the gear unit is used to change the rotational speed of the cleaning roller by shifting the cover element from a first gear stage to a second gear stage
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
The invention relates to a wet cleaning device (1), in particular a wet wiping device, comprising a cleaning roller (3) mounted such that it can rotate about a roller shaft (2), and a roller cover (4) at least partially surrounding the cleaning roller (3) in the circumferential direction, which has a moveable cover element (5) for optionally closing and/or opening an opening region (6) of the roller cover (4). In order to create a wet cleaning device (1) wherein the rate of rotation of the cleaning roller (3) can be varied in an advantageous manner, according to the invention, the cover element (5) and the roller shaft (2) are operatively connected to one another via a transmission (8) connecting the roller shaft (2) to a roller drive (7), in such a way that the transmission (8) can be shifted from a first transmission stage (9) to a second transmission stage (10), or vice versa, in order to change a rotational speed of the cleaning roller (3) via a movement of the cover element (5). The invention also relates to a method for operating a wet cleaning device (1).