Pool Cleaning Robot Power Output Structure for High-Speed Roller Drive

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Solution Overview

Problem

Existing swimming pool cleaning robots face issues with costly cleaning rollers or low cleaning efficiency due to the influence of driving speed.

Innovation Solution

A power output structure for a swimming pool cleaning robot that includes a drive mechanism with a driving device directly powering both the robot body and a cleaning roller, featuring a transmission ratio greater than that to the roller, ensuring the cleaning roller rotates multiple times faster than the driving wheel.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the cleaning roller is driven by driving wheels with the same transmission ratio as the drive mechanism, then the structure is simple, but the cleaning efficiency is low due to the influence of driving speed

Engineering Contradiction:
Improvecleaning efficiencyVSAvoidtransmission system complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent applies different transmission ratios to different parts of the system: the drive mechanism uses one transmission ratio while the cleaning roller uses a different (higher) transmission ratio. This allows each component to operate at its optimal speed - the robot body moves at a reasonable speed while the cleaning roller rotates at a higher speed for better cleaning efficiency.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The patent changes the transmission ratio parameter for the cleaning roller relative to the drive mechanism. By setting the transmission ratio of the driving device to the cleaning roller to be less than that to the drive mechanism, the cleaning roller achieves higher rotational speed compared to the forward movement speed, thereby improving cleaning performance.

Inventive Principle:
Principle #35Parameter changes

2Reliability

If the cleaning roller rotates at the same speed as the driving wheel, then the transmission system is simple, but the cleaning effect is poor when the robot moves slowly

Engineering Contradiction:
Improvecleaning performanceVSAvoidpower transmission structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent implements local quality by giving different speed characteristics to different components. The cleaning roller is designed to rotate faster than the driving wheel through a specialized transmission path, ensuring that cleaning performance remains reliable even when the robot's forward movement is slow.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The driving device serves multiple functions: it drives both the drive mechanism for robot movement and the cleaning roller for cleaning operations. By using a single driving device with different transmission ratios to different components, the system achieves multi-functionality while maintaining reliable cleaning performance across various movement speeds.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Reliability

If separate driving systems are used for the cleaning roller and driving wheels, then each component can be optimized independently, but the cost increases

Engineering Contradiction:
Improvecomponent optimizationVSAvoidnumber of driving systems
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent merges the driving functions by using a single driving device to power both the drive mechanism and the cleaning roller. This consolidation reduces the number of separate driving systems, lowering cost and complexity while still achieving optimized performance through different transmission ratios for each function.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The driving device is designed with universal functionality to serve multiple purposes: driving the robot body forward through the drive mechanism and simultaneously rotating the cleaning roller for cleaning. This multi-functional design eliminates the need for separate driving systems while maintaining component optimization through differential transmission ratios.

Inventive Principle:
Principle #6Universality (Multi-functionality)

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 cleaning roller maintains high-speed rotation independent of the driving wheel's speed, enhancing cleaning performance even at slow movement speeds.

Implementation Method 1

a first gear fixedly mounted on the output shaft of the motor, a fourth gear rotatably mounted on the shaft, and a third gear fixedly mounted on the cleaning roller near the end of the drive mechanism, and the first gear, the fourth gear, and the third gear are sequentially meshed

Methodology Applied
Scientific EffectGear meshing: Gear

Data Source

PatentUS12503876B2Power output structure for swimming pool cleaning robot
Publication Date: 2025.12.23 SHENZHEN SEAUTO TECH CO LTD
  • US12503876B2 patent drawing
  • US12503876B2 patent drawing
  • US12503876B2 patent drawing

AI summary

The present disclosure is related to the field of swimming pool cleaning robot technology, in particular, to a power output structure for a swimming pool cleaning robot. The structure includes a main body for the swimming pool robot, with drive mechanisms on both sides. A cleaning roller is mounted on the bottom of the front end of the main body of the swimming pool robot. There is a driving device inside the main body of the swimming pool robot that drives both the drive mechanisms and the cleaning roller. This present disclosure directly drives the cleaning roller to rotate with the drive mechanism that rotates the driving wheel, thereby ensuring that the speed of the cleaning roller is several times higher than that of the driving wheel. Therefore, the swimming pool cleaning robot main body can achieve good cleaning results even when the swimming pool cleaning robot is moving slowly.