Wall-Climbing Pool Robot With Synchronized Brush-Crawler Steering

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Solution Overview

Problem

Existing swimming pool cleaning robots struggle with low cleaning efficiency and battery life due to the need for external power or increased battery capacity, which is costly and inconvenient.

Innovation Solution

A wall-climbing robot with synchronized acceleration and deceleration of roller brush bodies and walking crawler belts on each side, controlled by different rotating speeds of walking motors, enhancing steering flexibility and reducing turning radius for improved cleaning efficiency and endurance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Duration of action of moving object

If the battery capacity is increased to improve endurance, then the cleaning efficiency can be maintained, but the cost increases

Engineering Contradiction:
ImproveenduranceVSAvoidcost
Core Design Contradiction:
Duration of action of moving objectVSEase of manufacture

Solution Approach 1:

The patent applies dynamics by making the roller brush and crawler belt speed variable and synchronized. The controller adjusts the rotational speeds of the roller brush and crawler belt based on working conditions, allowing the robot to optimize its cleaning performance and energy consumption. This dynamic speed adjustment enables the robot to maintain high cleaning efficiency without requiring excessive battery capacity, thus resolving the contradiction between endurance and cost.

Inventive Principle:
Principle #15Dynamics

2Duration of action of moving object

If a cable is provided for external power supply to improve endurance, then the robot can operate continuously, but the cleaning efficiency decreases and operation becomes inconvenient

Engineering Contradiction:
ImproveenduranceVSAvoidcleaning efficiency
Core Design Contradiction:
Duration of action of moving objectVSProductivity

Solution Approach 1:

The patent applies multi-functionality by designing the crawler belt to serve dual purposes: both as a propulsion mechanism for movement and as a cleaning element. The crawler belt is equipped with cleaning components that can clean the pool wall surface while the robot is moving. This eliminates the need for a separate roller brush or cable-based power supply, as the crawler belt itself contributes to the cleaning function, thereby maintaining high cleaning efficiency without requiring external power cables.

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

3Ease of operation

If the roller brush and crawler belt accelerate and decelerate synchronously on the same side, then the steering flexibility improves and turning radius decreases, but the device complexity increases

Engineering Contradiction:
Improvesteering flexibilityVSAvoiddevice complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The patent applies merging by combining the drive systems of the roller brush and crawler belt on the same side into a single integrated unit. The roller brush and crawler belt are driven by the same motor or coupled through a common transmission mechanism, ensuring they accelerate and decelerate synchronously. This integrated design achieves flexible steering and small turning radius without requiring separate complex control systems for each component, thus resolving the contradiction between steering flexibility and device complexity.

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentUS20250314089A1Wall-climbing robot for cleaning swimming pool
Publication Date: 2025.10.09 YUNDA H&H TECH (TIANJIN) CO LTD
  • US20250314089A1 patent drawing
  • US20250314089A1 patent drawing
  • US20250314089A1 patent drawing

AI summary

A wall-climbing robot for cleaning a swimming pool is provided. The cleaning robot includes a machine body, walking assemblies located on both sides of the machine body, and a roller brush assembly located at a front side of the machine body. The roller brush assembly includes a support shaft and two sections of roller brush bodies rotatably arranged on the support shaft. The support shaft is connected to the machine body. Each walking assembly includes a walking motor, and a first output end and a second output end connected to the walking motor. The first output end is connected to a walking crawler belt and the second output end is connected to the roller brush body. The walking crawler belt and the roller brush body on the same side of the machine body can accelerate and decelerate synchronously.