Pool Cleaner Track and Cam Shifter for Directional Control
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Solution Overview
Problem
Existing automatic pool cleaners lack efficient directional control, debris handling, and ease of maintenance, particularly in track-driven models with limited adaptability to varying pool surfaces and debris sizes.
Innovation Solution
The automatic pool cleaner features tracks with internal teeth for directional control, a cam-driven gear shifting mechanism for forward and reverse motion, bladed scrubbers to counteract buoyancy, and an easily opening body for maintenance access, enhancing debris collection and cleaning efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If track-driven propulsion is used, then the cleaner can move along pool surfaces, but directional control and adaptability to varying surfaces are limited
Solution Approach 1:
The patent applies dynamics by making the track structure adjustable and reconfigurable. The track segments can be dynamically repositioned to adapt to different pool surfaces and cleaning requirements, transforming a static track system into a dynamic one that responds to varying conditions.
Solution Approach 2:
The track is divided into multiple segments that can be independently positioned and configured. This segmentation allows the track to adapt to varying pool surfaces by adjusting individual segments, while maintaining overall structural integrity through standardized connection mechanisms.
2Ease of operation
If conventional wheel-based propulsion is used, then the structure is simple, but directional control and reversal capability are insufficient
Solution Approach 1:
The patent introduces a cam mechanism as an intermediary between the power source and the track drive system. The cam converts rotational motion into the sequential engagement and disengagement of drive wheels with the track, enabling directional control and reversal without requiring complex independent control systems for each wheel.
Solution Approach 2:
The propulsion mechanism uses periodic action through the cam's rotation, which sequentially engages and disengages the drive wheels in a rhythmic pattern. This periodic engagement provides controlled propulsion and enables direction changes by altering the timing and sequence of wheel engagement.
3Productivity
If the cleaner body is sealed for debris collection, then cleaning efficiency improves, but maintenance access and debris removal become difficult
Solution Approach 1:
The cleaner body is segmented into accessible sections with removable panels or hatches. This segmentation allows the body to remain sealed during operation for efficient debris collection, while providing easy access points for maintenance and debris removal without compromising the overall sealing.
Solution Approach 2:
The design extracts the maintenance access function from the sealed body structure by incorporating removable panels, hatches, or quick-release access points. These extracted access features allow maintenance personnel to easily reach internal components and remove debris without opening the entire body.
4Force
If buoyancy forces act on the cleaner, then the cleaner floats on water, but contact with cleaning surfaces is reduced
Solution Approach 1:
The patent applies counterweight principles by incorporating weighted components or adjustable ballast systems that generate downward force to counteract the upward buoyancy forces. This balance ensures the cleaner maintains adequate contact with pool surfaces during operation without requiring complex active control systems.
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 solution enables flexible directional movement, effective debris handling, and easy maintenance, improving the cleaning efficiency and adaptability of automatic pool cleaners, particularly in track-driven models.
Implementation Method 1
Powering the wheels is an impeller comprising an impeller member and pairs of vanes. Evacuating the impeller causes water within a swimming pool to interact with the vanes, rotating the impeller member.
Implementation Method 2
Positioning the scrubbers on either side of the debris inlet to the body also provides a wider cleaning path for the APC and produces vortexes actively inducing debris-laded water to flow toward the inlet. The scrubbers additionally produce downward force in operation, helping offset buoyancy forces and assisting the APC in remaining in contact with a to-be-cleaned surface.
Implementation Method 3
a cam designed to push a shifter in either of two directions so as to engage a different one of two (mitre) drive gears
Data Source
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AI summary
Automatic pool cleaners (APCs) and components thereof are detailed. The APCs may include tracks for movement, with the tracks having teethed internal surfaces. The APCs additionally may supply shift mechanisms for purposes of changing direction of their movement and incorporate bladed scrubbers and easily-opening bodies.