Detachable Wet-Cleaning Module for Adjustable Robot Mopping Width

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Existing cleaning robots are limited to single functions, requiring multiple devices for sweeping and mopping, which occupy space and cause inefficiencies due to structural design limitations, and integrated systems fail to adjust cleaning widths, leading to incomplete cleaning.

Innovation Solution

An automatic cleaning device with a mobile platform featuring a detachable connection between a driving platform and a supporting platform, allowing for a dry-cleaning and wet-cleaning module with a reciprocating cleaning head, enabling adjustable cleaning widths and facilitating maintenance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If sweeping robot and mopping robot are combined into integrated cleaning device, then cleaning function is improved, but device complexity increases

Engineering Contradiction:
Improvecleaning functionVSAvoiddevice complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The cleaning device is divided into separate functional modules: a sweeping module and a mopping module. Each module can be independently assembled, disassembled, and maintained. The mopping module includes a mopping cloth that can be detached from the robot body, allowing users to easily replace or clean the mopping cloth without disassembling the entire device.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The robot body is designed with universal interfaces and standardized connection structures that can accommodate different cleaning modules. The control system and navigation system serve both sweeping and mopping functions, making the base unit multi-functional while allowing specialized modules to be added or removed based on user needs.

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

2Adaptability or versatility

If mopping module is integrated into robot body, then cleaning function is improved, but ease of repair deteriorates

Engineering Contradiction:
Improvecleaning functionVSAvoidease of repair
Core Design Contradiction:
Adaptability or versatilityVSEase of repair

Solution Approach 1:

The mopping module is designed as a separate, detachable component from the robot body. The mopping cloth can be easily removed and replaced by users without requiring technical expertise. Internal components of the mopping module such as the motor and transmission mechanisms can be independently accessed and replaced.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The mopping module is extracted as an independent functional unit that can be completely removed from the robot body. This extraction design allows the mopping module to be separately maintained, repaired, or replaced without affecting the sweeping functionality of the robot body.

Inventive Principle:
Principle #2Taking out (Extraction)

3Productivity

If mopping cloth width is made equal to robot bottom surface width, then cleaning coverage is improved, but harmful factors increase

Engineering Contradiction:
Improvecleaning coverageVSAvoidfloor dirtiness
Core Design Contradiction:
ProductivityVSObject-generated harmful factors

Solution Approach 1:

The mopping cloth width and position are made dynamically adjustable rather than fixed. The control system can adjust the mopping cloth width to match the effective sweeping width, ensuring that the mopping cloth only cleans areas that have been previously swept. The position of the mopping module can also be dynamically adjusted during operation.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The control system uses feedback from sensors and navigation data to dynamically adjust the mopping cloth parameters. The system monitors the sweeping path and width, and automatically adjusts the mopping cloth configuration to ensure proper sequencing - sweeping first, then mopping - preventing the harmful effect of mopping before sweeping.

Inventive Principle:
Principle #23Feedback

Data Source

PatentEP4292494B1Automatic cleaning device
Publication Date: 2026.04.01 BEIJING ROCKROBO TECH CO LTD
  • EP4292494B1 patent drawingFigure 1~2
  • EP4292494B1 patent drawingFigure 3~4
  • EP4292494B1 patent drawingFigure 5~6

AI summary

An automatic cleaning device, comprising: a movable platform (100) configured to automatically move on an operation surface, and a cleaning module (150) provided on the movable platform (100); the cleaning module comprises: a dry cleaning module (151) configured to clean at least a part of the operation surface in a dry cleaning manner, and a wet cleaning module (400) configured to clean at least a part of the operation surface in a wet cleaning manner; the wet cleaning module (400) comprises: a cleaning head (410) for cleaning the operation surface, and a driving unit (420) for driving the cleaning head (410) to substantially reciprocate along a target surface, the target surface being a part of the operation surface; the driving unit (420) comprises: a driving platform (421) and a support platform (422) detachably connected to the driving platform (421). A pressing structure (4220) co-operates with a fastening slot structure (4210) to achieve the detachable connection between the support platform (422) and the driving platform (421), thereby facilitating maintenance of the cleaning device.