Pool Robot Transmission Device Merging Drive and Cleaning Functions

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Solution Overview

Problem

Existing pool cleaning robots have a complex driving structure and limited cleaning functions, with separate transmission devices for driving wheels and cleaning brushes, restricting their application to only cleaning the pool bottom.

Innovation Solution

A transmission device that integrates a driving member, a first driven member, and a second driven member, allowing a single driving member to drive both a wheel assembly and multiple cleaning members, such as a ground and water surface cleaning brushes, through a system of gears and belts.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If separate transmission devices are used for driving wheels and cleaning brushes, then the driving function is reliable, but the structure becomes complex

Engineering Contradiction:
Improvedriving functionVSAvoidtransmission structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent combines the driving member and multiple driven members (first driven member for ground cleaning brush, second driven member for water surface cleaning brush) into a single integrated transmission device. The driving member's output shaft connects to both driven members through gear mechanisms, allowing one motor to power multiple functions simultaneously, thus simplifying the overall structure while maintaining reliable driving performance.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The transmission device is designed with universal functionality where a single driving member can drive multiple different cleaning members through different transmission paths. The first driven member drives the ground cleaning brush while the second driven member drives the water surface cleaning brush, enabling the pool cleaning robot to perform multiple cleaning functions with one integrated transmission system.

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

2Manufacturing precision

If separate transmission devices are used for driving wheels and cleaning brushes, then each component can be optimized independently, but the manufacturing cost increases

Engineering Contradiction:
Improvecomponent optimizationVSAvoidmanufacturing cost
Core Design Contradiction:
Manufacturing precisionVSEase of manufacture

Solution Approach 1:

By merging the transmission functions into a single integrated device with one driving member and multiple driven members, the patent reduces the total number of motors and transmission components needed. This consolidation lowers manufacturing costs while the gear mechanisms maintain precise transmission ratios for each cleaning function, achieving cost-effectiveness without sacrificing component optimization.

Inventive Principle:
Principle #5Merging (Combining)

3Device complexity

If the pool cleaning robot only cleans the pool bottom, then the structure is simple, but the cleaning function is limited

Engineering Contradiction:
Improvecleaning structureVSAvoidcleaning function
Core Design Contradiction:
Device complexityVSAdaptability or versatility

Solution Approach 1:

The pool cleaning robot is equipped with multi-functionality through the integrated transmission device that can drive both ground cleaning brushes for bottom cleaning and water surface cleaning brushes for surface cleaning. This universal transmission system allows the robot to adapt to different cleaning needs (pool bottom and water surface) without requiring separate specialized devices, thereby enhancing versatility while maintaining structural simplicity.

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 integrated transmission device simplifies the driving structure, reduces manufacturing costs, and enables diversified cleaning functions, including both pool bottom and surface cleaning, enhancing the robot's versatility and efficiency.

Implementation Method 1

The first wheel is in transmission connection to the second wheel through the transmission belt

Methodology Applied
Scientific EffectFriction: Friction

Implementation Method 2

The output end of the driving member is connected to the first gear, and the first gear is engaged with the first wheel

Methodology Applied
Scientific EffectGear: Gear

Data Source

PatentEP4667682A1Transmission device and pool cleaning robot
Publication Date: 2025.12.24 XINGMAI INNOVATION TECH (SUZHOU) CO LTD
  • EP4667682A1 patent drawingFigure 1
  • EP4667682A1 patent drawingFigure 2
  • EP4667682A1 patent drawing

AI summary

The present invention relates to the technical field of pool cleaning robots, and in particular, to a transmission device and a pool cleaning robot. The transmission device includes a driving member, a first driven member, and a second driven member. An output end of the driving member is configured to be drivingly connected to a wheel assembly of the pool cleaning robot, so that the driving member is capable of driving the wheel assembly to rotate. The first driven member is drivingly connected to the wheel assembly. An output end of the first driven member is configured to be connected to a first cleaning member of the pool cleaning robot, and the wheel assembly drives the first driven member to rotate, so that the first driven member drives the first cleaning member to rotate. The second driven member is drivingly connected to the wheel assembly. An output end of the second driven member is configured to be connected to a second cleaning member of the pool cleaning robot, and the wheel assembly drives the second driven member to rotate, so that the second driven member drives the second cleaning member to rotate. According to the transmission device, only one driving member is needed to drive the wheel assembly, the first cleaning member, and the second cleaning member, leading to a simple structure. In this way, cleaning functions of the pool cleaning robot are diversified.