Lifting Device for Cleaning Assembly to Prevent Secondary Pollution

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Solution Overview

Problem

Conventional roller brush assemblies in cleaning apparatuses, such as cleaning robots, are fixed and cannot be lifted up or down, leading to secondary pollution as they cannot avoid regions already cleaned during a round trip.

Innovation Solution

A lifting device for cleaning assemblies, comprising a guiding base and a lifting assembly with a driving member, allows the cleaning assembly to be lifted up or down relative to the housing, preventing secondary pollution by allowing the assembly to avoid cleaned regions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the cleaning assembly is fixed to the housing, then the structure is simple and stable, but the cleaning assembly cannot be lifted up to avoid cleaned regions, causing secondary pollution

Engineering Contradiction:
Improveability to lift cleaning assemblyVSAvoidstructure complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The cleaning assembly is transformed from a fixed state to a movable state by introducing a lifting mechanism. The lifting block can slide along the guiding base vertically, allowing the cleaning assembly to be dynamically adjusted between contact and non-contact positions with the ground, thereby preventing secondary pollution while maintaining operational flexibility.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The lifting device is divided into independent functional modules: a guiding base fixed to the housing, a lifting block that moves vertically, and a cleaning assembly that can be independently lifted. This segmentation allows each component to perform its specific function while keeping the overall structure manageable and not excessively complex.

Inventive Principle:
Principle #1Segmentation

2Productivity

If the cleaning assembly is fixed, then manufacturing and assembly are simple, but the cleaning assembly cannot avoid cleaned regions during round trip, leading to loss of time and reduced productivity

Engineering Contradiction:
Improvecleaning efficiencyVSAvoidlifting mechanism complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The lifting mechanism enables the cleaning assembly to dynamically adjust its position based on cleaning status. When the cleaning robot returns to an already cleaned region, the lifting block raises the cleaning assembly off the ground, preventing unnecessary cleaning operations and secondary pollution, thereby improving overall cleaning efficiency and productivity.

Inventive Principle:
Principle #15Dynamics

3Object-affected harmful factors

If a lifting mechanism is added to enable the cleaning assembly to lift up and down, then secondary pollution is prevented, but the device complexity increases

Engineering Contradiction:
Improvesecondary pollutionVSAvoidstructure complexity
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The lifting mechanism is designed with localized functional features: the guiding base provides vertical guidance, the lifting block provides lifting motion, and the groove structure provides constrained movement. Each component has a specific local function that contributes to the overall goal of preventing secondary pollution without requiring a completely complex system redesign.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The lifting block acts as an intermediary mechanism between the fixed housing and the movable cleaning assembly. It translates the lifting action into vertical movement of the cleaning assembly, enabling the cleaning assembly to be raised off the ground to prevent secondary pollution while isolating the complexity of the lifting mechanism from both the housing and the cleaning assembly.

Inventive Principle:
Principle #24Intermediary (Mediator)

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 lifting device effectively prevents secondary pollution by enabling the cleaning assembly to lift off the ground when not needed, improving cleaning efficiency and reducing unnecessary cleaning of already cleaned areas.

Implementation Method 1

The transmission mechanism comprises a screw rod, one end of the screw rod is connected to the driving member, the other end of the screw rod is threadedly connected to the guiding block

Methodology Applied
Scientific EffectScrew mechanism: Screw

Implementation Method 2

The groove is obliquely arranged on the guiding base. The driving member drives the guiding block to slide along a first direction, allowing the lifting block to move up or down in the groove along a second direction

Methodology Applied
Scientific EffectInclined plane mechanism: Inclined Plane

Implementation Method 3

The transmission mechanism comprises a rack arranged on the guiding base with a length direction of the rack being parallel to the first direction, and a gear meshed with the rack

Methodology Applied
Scientific EffectRack and pinion mechanism: Rack and Pinion

Data Source

PatentUS12295532B2Lifting device for cleaning assembly and cleaning apparatus
Publication Date: 2025.05.13 YUNJING INTELLIGENCE (SHENZHEN) CO LTD
  • US12295532B2 patent drawing
  • US12295532B2 patent drawing
  • US12295532B2 patent drawing

AI summary

The present disclosure provides a lifting device for cleaning assembly and a cleaning apparatus. The lifting device includes a guiding base and a lifting assembly. The guiding base is arranged on an external housing. The lifting assembly includes a lifting mechanism connected with the cleaning assembly and slidably coupled to the guiding base, and a driving member arranged on the guiding base and configured to drive the lifting mechanism to move with respect to the guiding base.