Scrubber assembly for a pool cleaner
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Solution Overview
Problem
Conventional pool cleaners often require scrubber assemblies to be present for effective operation, limiting their ability to vacuum debris during reverse motion or turning, as these components are integral to the drive systems and vacuum systems are typically only functional during forward motion.
Innovation Solution
A scrubber assembly for pool cleaners featuring a center shaft, rotary cylinder, and pinion gears that can engage with the internal spur gear profile of the rotary cylinder, allowing for independent operation and attachment to the front wheel assembly for forward and backward movement, enabling debris pick-up and navigation over obstacles without damaging the pool surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If scrubber assemblies are integrated into the drive system, then scrubbing and vacuuming can be performed during forward motion, but the cleaner cannot vacuum debris during reverse motion or turning
Solution Approach 1:
The drive system is segmented into independent wheel assemblies, with the front wheel assembly being detachable. This allows the scrubber assembly to be selectively engaged or disengaged from the drive system, enabling independent attachment and detachment to accommodate different operational requirements.
Solution Approach 2:
The front wheel assembly is designed with dynamic engagement capabilities through the pinion gear mechanism that can selectively engage with the rotary cylinder. This dynamic engagement allows the system to transition between different operational modes (scrubbing/vacuuming enabled or disabled) based on the cleaner's motion state.
2Reliability
If scrubber assemblies are present for effective operation, then scrubbing can be performed, but the vacuum system is limited to forward motion only
Solution Approach 1:
The vacuum system is extracted from the scrubber assembly integration, allowing the vacuum function to operate independently. The detachable front wheel assembly with pinion gear enables the vacuum system to be engaged or disengaged separately, permitting vacuuming during reverse motion or turning when the scrubber is not needed.
Solution Approach 2:
The front wheel assembly serves multiple functions: it can engage the rotary cylinder for scrubbing and vacuuming during forward motion, or be disengaged to allow vacuuming during reverse motion or turning. This multi-functionality increases the versatility of the pool cleaner's operational capabilities.
3Adaptability or versatility
If scrubber assemblies are integrated into the drive system, then driving functionality is provided, but attachment and detachment becomes complex
Solution Approach 1:
The drive system is divided into modular components: the front wheel assembly, rotary cylinder, and pinion gear mechanism. This segmentation allows each component to be independently designed and assembled, simplifying the attachment and detachment process while maintaining functional integration when engaged.
Solution Approach 2:
The pinion gear acts as an intermediary mechanism between the front wheel assembly and the rotary cylinder. It provides a simple mechanical engagement interface that enables easy attachment and detachment of the scrubber assembly while maintaining reliable power transmission when engaged.
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 scrubber assembly enhances debris collection efficiency by allowing vacuuming during all directions of motion and navigating over large debris without damaging the pool surface, improving cleaning coverage and reducing wear on the pool surface.
Implementation Method 1
The rotary cylinder is positioned around the center shaft and includes an internal spur gear profile. The first pinion gear is engagable with the internal spur gear profile of the rotary cylinder
Implementation Method 2
The external spur gear is engaged with the first pinion gear, the spur gear adapted for engagement with inner teeth of a front wheel assembly of a pool cleaner
Data Source
AI summary
Embodiments of the invention provide a scrubber assembly for a pool cleaner comprising a center shaft and a rotary cylinder positioned around the center shaft and including an internal spur gear profile. The scrubber assembly further includes a first pinion gear engagable with the internal spur gear profile of the rotary cylinder and aligned off-center from the center shaft and a first end bracket coupled to a first end of the center shaft and rotatable about the first pinion gear.