Removable Brushroll Drive Train for Simplified Vacuum Maintenance

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Solution Overview

Problem

Existing surface cleaning apparatuses face challenges in efficiently and easily maintaining and servicing the drive train components, particularly the brushroll, which often requires complex disassembly and can lead to increased downtime and maintenance costs.

Innovation Solution

A removable drive train system is introduced, allowing for the brushroll to be driven by a motor through a coupler and belt mechanism that can be easily detached and serviced independently, simplifying maintenance and reducing downtime.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If the drive train is integrated into the housing, then the structural integrity is improved, but the ease of repair deteriorates

Engineering Contradiction:
Improvestructural integrityVSAvoidease of repair
Core Design Contradiction:
Stability of the object's compositionVSEase of repair

Solution Approach 1:

The drive train is segmented from the housing as a separate removable assembly. The drive train includes a motor, belt, and brushroll that can be detached as a unit from the housing, allowing maintenance without complete disassembly while maintaining structural integrity during operation.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The drive train assembly transitions from a fixed integrated state to a removable state. The drive train can be dynamically detached and reattached to the housing, enabling easy repair while maintaining structural integrity when coupled.

Inventive Principle:
Principle #15Dynamics

2Reliability

If the drive train components are fixed in place, then the reliability is improved, but the ease of operation deteriorates

Engineering Contradiction:
ImprovereliabilityVSAvoidease of operation
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The drive train is divided into a removable assembly that can be easily operated as a single unit. The panel, coupler, and belt form a segmented assembly that can be detached and serviced independently while maintaining reliable operation when coupled to the housing.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The drive train assembly is extracted from the housing as a separate serviceable unit. The panel can be removed to carry the coupler and belt with it, allowing easy access and replacement of components without affecting the overall reliability of the cleaning apparatus.

Inventive Principle:
Principle #2Taking out (Extraction)

3Ease of repair

If the drive train is made removable, then the ease of repair is improved, but the device complexity increases

Engineering Contradiction:
Improveease of repairVSAvoiddevice complexity
Core Design Contradiction:
Ease of repairVSDevice complexity

Solution Approach 1:

Multiple components (motor, belt, coupler, panel) are merged into a single removable drive train assembly. This consolidation simplifies the repair process by allowing the entire assembly to be detached and serviced as one unit, offsetting the added complexity through integration of maintenance operations.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The removable drive train assembly serves multiple functions: it provides the driving mechanism during operation and can be easily removed for maintenance, replacement, or upgrade. This multi-functionality justifies the additional complexity by enabling versatile operation and simplified repair.

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

4Stability of the object's composition

If the brushroll is integrated with the motor, then the structural integrity is improved, but the loss of time increases

Engineering Contradiction:
Improvestructural integrityVSAvoidmaintenance time
Core Design Contradiction:
Stability of the object's compositionVSLoss of time

Solution Approach 1:

The brushroll is segmented from the motor as part of the removable drive train assembly. This segmentation allows the brushroll to be quickly removed and replaced without affecting the motor, significantly reducing maintenance time while maintaining structural integrity during operation through the coupled assembly.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The drive train assembly dynamically transitions between integrated and separated states. During operation, the motor and brushroll function as an integrated unit providing structural integrity. During maintenance, the assembly can be quickly separated to minimize downtime for brushroll replacement.

Inventive Principle:
Principle #15Dynamics

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 removable drive train system facilitates easy maintenance and replacement of components, enhancing operational efficiency and reducing maintenance complexity, thereby improving the overall performance and longevity of the surface cleaning apparatus.

Implementation Method 1

a belt extending between the first coupler and the second coupler to transmit rotation between the first coupler and the second coupler

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentUS20250221592A1Surface cleaning apparatus including a removable brushroll drive train
Publication Date: 2025.07.10 TECHTRONIC FLOOR CARE TECH LTD
  • US20250221592A1 patent drawing
  • US20250221592A1 patent drawing
  • US20250221592A1 patent drawing

AI summary

A surface cleaning apparatus (10) includes a cleaning head (12) including housing, a brushroll (22) mounted in the housing, a motor (54) mounted in the housing, and a drive train (52) removably coupled to the housing. The housing includes a sidewall. The motor includes a motor shaft. The drive train includes a panel (100) removably coupled to the housing, a first coupler (102) mounted on the panel such that the first coupler is rotatable relative to the panel, a second coupler (106) mounted on the panel such that the second coupler is rotatable relative to the panel; and a belt extending between the first coupler and the second coupler to transmit rotation between the first coupler and the second coupler. When the drive train is coupled to the housing rotation of the motor shaft is transmitted through the drive train to the brushroll.