Back-Carried Dust Collector for High-Suction Cleaning Mobility

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Solution Overview

Problem

Conventional dust collectors, or vacuum cleaners, are cumbersome due to their heavy weight and size, making it tiring to carry them while cleaning, especially on stairs, and reducing the suction force when attempting to lighten them.

Innovation Solution

A back-carried dust collector design featuring a housing with a motor and dust collection chamber, equipped with shoulder belts for carrying on the back, a battery-holding part for power-tool batteries, and an air-exhaust port directing the exhaust downward, allowing for high-power suctioning without manually carrying the heavy component.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the weight of the dust-collector main body is reduced, then ease of operation is improved, but suction power deteriorates

Engineering Contradiction:
Improveease of carryingVSAvoidsuction power
Core Design Contradiction:
Ease of operationVSPower

Solution Approach 1:

The patent transitions from ground-based operation to aerial operation by equipping the dust collector with a rotor and lift-generating capability. This dimensional change from ground level to airborne operation allows the device to overcome its weight limitation, enabling it to be operated without ground support while maintaining full motor power for suction.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Productivity

If the motor power is increased for high-power suctioning, then cleaning efficiency is improved, but weight increases

Engineering Contradiction:
Improvecleaning efficiencyVSAvoidweight of dust collector
Core Design Contradiction:
ProductivityVSWeight of moving object

Solution Approach 1:

The patent employs lift-generating rotors and aerodynamic structures that produce upward force to counterbalance the weight of the heavy motor and overall device. This anti-weight mechanism allows a high-power motor to be installed without compromising portability, as the lift system compensates for the increased weight during operation.

Inventive Principle:
Principle #8Anti-weight (Counterweight)

3Ease of operation

If castors are added for dragging the dust collector, then ease of operation is improved, but device complexity increases

Engineering Contradiction:
ImprovemobilityVSAvoidstructural complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The patent extracts the mobility function from ground-based castors and reimplements it through aerial capability. By removing the dependency on ground contact and castors, the design achieves mobility through flight, thereby reducing structural complexity associated with wheels, axles, and ground-contact mechanisms while maintaining ease of movement.

Inventive Principle:
Principle #2Taking out (Extraction)

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

Enables convenient and efficient cleaning with high-power suctioning by distributing the weight across the back, reducing user fatigue and maintaining strong suction power.

Implementation Method 1

a motor and a fan, which generate the suction draft, are located in the dust-collector main body

Methodology Applied
Scientific EffectSuction: Suction

Implementation Method 2

a dust-collection chamber for collecting suctioned-in dust is also provided or defined in the dust-collector main body

Methodology Applied
Scientific EffectCyclone separation: Cyclone Separation

Implementation Method 3

an air-exhaust port, which directs an exhaust draft downward, may be provided in a lower part of the housing

Methodology Applied
Scientific EffectGravitation: Gravitation

Data Source

PatentUS11109725B2Dust collector
Publication Date: 2021.09.07 MAKITA CORP
  • US11109725B2 patent drawing
  • US11109725B2 patent drawing
  • US11109725B2 patent drawing

AI summary

A dust collector includes a dust-collector main body, a coupling-hose part, an operation unit, and a belt or harness. The dust-collector main body serves to collect dust by generating a suction draft (partial vacuum). The dust-collector main body includes a housing, a motor, a dust-collection chamber, and at least one battery pack mount. The belt or harness is attached to the dust-collector main body and is designed for the user to carry the dust-collector main body on his or her back. The operation unit is connected to the dust-collector main body via an external, flexible cord. The operation unit includes one or more LEDs for illuminating the area to be cleaned and an ON/OFF switch for controlling operation of the motor.