Battery-operated backpack suction appliance

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Solution Overview

Problem

Existing backpack dust collectors are cumbersome and require significant effort to empty and clean, with heavy designs that hinder portability and ease of use.

Innovation Solution

A battery-operated backpack suction appliance featuring a collection container made of foamed plastic and designed for toolless removal from the technical unit, allowing for easy access and reduced weight, along with a compact structure and ergonomic design that includes a rechargeable battery and secure coupling mechanisms.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Weight of moving object

If the collection container is made of conventional solid plastic material, then the structural strength and durability are improved, but the overall weight of the suction appliance increases

Engineering Contradiction:
Improveweight of suction applianceVSAvoidstructural strength of collection container
Core Design Contradiction:
Weight of moving objectVSStrength

Solution Approach 1:

The collection container is made from foamed plastic material with a cellular structure that provides both weight reduction and adequate mechanical strength. The foam structure maintains structural integrity while significantly reducing the mass of the collection container compared to solid plastic alternatives.

Inventive Principle:
Principle #31Porous materials

Solution Approach 2:

The use of foamed plastic represents a composite material approach, combining plastic matrix with air pockets to create a material that offers optimized strength-to-weight ratio. This composite structure achieves the dual goal of reducing overall appliance weight while maintaining sufficient structural strength for operational requirements.

Inventive Principle:
Principle #40Composite materials

2Weight of moving object

If the collection container is made of foamed plastic material, then the weight is reduced, but the structural strength may be compromised

Engineering Contradiction:
Improveweight of collection containerVSAvoidstructural strength of collection container
Core Design Contradiction:
Weight of moving objectVSStrength

Solution Approach 1:

The foamed plastic material provides a porous cellular structure that reduces weight while maintaining adequate structural strength through the distributed cell wall network. The foam structure is engineered to provide sufficient mechanical properties for the collection container's functional requirements.

Inventive Principle:
Principle #31Porous materials

3Ease of operation

If the collection container is designed for toolless removal, then the ease of operation is improved, but the device complexity increases

Engineering Contradiction:
Improveease of collection container removalVSAvoidcoupling mechanism complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The coupling mechanism is segmented into discrete coupling elements and corresponding receptacles that enable toolless connection and disconnection. This segmentation allows the collection container to be easily separated from the technical unit through simple manual manipulation of the coupling elements without requiring tools.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The coupling mechanism incorporates dynamic elements that allow for easy engagement and disengagement through movement. The coupling elements are designed to move between locked and unlocked positions, enabling toolless removal while maintaining secure connection during operation.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS20230084518A1Battery-operated backpack suction appliance
Publication Date: 2023.03.16 ALFRED KARCHER SE & CO KG
  • US20230084518A1 patent drawing
  • US20230084518A1 patent drawing
  • US20230084518A1 patent drawing

AI summary

A battery-operated backpack suction appliance, including a collection container, a technical unit connected to the collection container in an operating position of the suction appliance, and a backpack device connected to at least one of the collection container and the technical unit in the operating position for the suction appliance to be worn on the back of an operator, wherein the collection container is made of a foamed plastic material and wherein the collection container is configured to be removable from the technical unit in a toolless manner is disclosed.