Swimming Pool Cleaner Driving Assembly with Adjustable Brush Spacing
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Solution Overview
Problem
Current swimming pool cleaners face high manufacturing costs and limited adjustability in the distance between front and rear rolling brushes due to either costly crawler belt mechanisms or gear-driven systems with size constraints.
Innovation Solution
A driving assembly with wheels, internal and external teeth, driving gears, and a flexible driving belt that allows for adjustable brush spacing, featuring a simple structure and low manufacturing costs, enabling the use of different belt lengths to accommodate various pool cleaner models.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a crawler belt mechanism is used for driving the swimming pool cleaner, then the cleaning reliability is improved, but the manufacturing cost increases and the structure becomes more complex
Solution Approach 1:
The patent extracts the essential driving function from the complex crawler belt mechanism and implements it through a simplified wheel-based system with gears and chains. The crawler belt's propulsion function is replaced by wheels with external teeth that engage with the pool bottom, eliminating the need for multiple bearing supports while maintaining reliable cleaning operation.
Solution Approach 2:
The patent employs inexpensive, easily replaceable components such as chains and gears instead of expensive crawler belts. These simpler mechanical elements can be manufactured at lower cost and are easier to maintain or replace if worn, reducing overall system cost while preserving functional reliability.
2Device complexity
If a gear-driven system is used for driving the swimming pool cleaner, then the structure is simplified, but the distance between front and rear rolling brushes cannot be adjusted
Solution Approach 1:
The patent introduces adjustability into the previously fixed gear-driven system by allowing the distance between front and rear rolling brushes to be modified. This is achieved through adjustable mounting positions or removable connections in the frame structure, enabling the cleaner to adapt to different pool sizes and cleaning requirements while maintaining structural simplicity.
Solution Approach 2:
The patent designs the gear-driven system with universal adjustability features that allow the same basic structure to serve multiple pool cleaning scenarios. The adjustable brush spacing enables a single cleaner design to handle various pool configurations, increasing versatility without complicating the core mechanical structure.
3Ease of manufacture
If fixed-size gears are used in the driving mechanism, then the manufacturing cost is reduced, but the adjustment of distance between rolling brushes is limited
Solution Approach 1:
The patent divides the frame structure into modular segments that can be independently positioned or adjusted. This segmentation allows the distance between rolling brushes to be changed by reconfiguring modular components rather than requiring custom-sized gears for each configuration, maintaining low manufacturing costs while enabling adjustment.
Solution Approach 2:
The patent incorporates adjustable mounting mechanisms that allow the frame segments to be repositioned dynamically. This enables the same standardized gears to work with different brush spacing configurations through mechanical adjustment of component positions, preserving ease of manufacture while achieving adaptability.
Data Source
AI summary
A driving assembly and a swimming pool cleaner. The driving assembly includes: wheels, comprising first wheel and second wheel, each of the first wheel and the second wheel including a wheel body and internal teeth, and the internal teeth arranged on an inner wall of the wheel body; a driving gear, arranged in the wheel body of the first wheel and matching the internal teeth of the first wheel; a first rolling brush gear, arranged in the wheel body of the first wheel and matching the internal teeth of the first wheel; a second rolling brush gear, arranged in the wheel body of the second wheel and matching the internal teeth of the second wheel; and a driving belt with an end tightly attached to the first wheel and another end tightly attached to the second wheel. The driving assembly is simple in structure and low in manufacturing cost.