Dust collector
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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 a flexible hose system with a handle pipe that can be hooked onto a belt for hands-free operation, allowing high-power suctioning without manual carrying of the heavy component.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the dust-collector main body is made heavy with a high-power motor, then suction force is improved, but ease of operation deteriorates due to the need to carry it by hand
Solution Approach 1:
The patent transitions the carrying method from hand-carrying (horizontal/vertical dimension) to back-carrying (distributed weight across shoulders and back). The harness system with shoulder belts and waist belt distributes the weight across multiple body points, enabling the user to carry the heavy dust collector with high-power motor without excessive fatigue, thus resolving the contradiction between power and ease of operation.
2Ease of operation
If the dust-collector main body is made lighter to reduce carrying burden, then ease of operation is improved, but suction force deteriorates due to reduced motor power
Solution Approach 1:
The patent enables the user to carry the full-weight dust collector with high-power motor by changing the carrying dimension from hand-held to back-carried with distributed weight support. This allows the motor to maintain high power output without compromising ease of operation, as the harness system bears the weight across the user's body rather than requiring arm strength.
3Ease of operation
If castors are added to drag the dust-collector main body along the floor, then ease of operation is improved, but adaptability deteriorates when cleaning stairs where there is no space to place the dust collector
Solution Approach 1:
The patent segments the dust collector into two functional parts: the heavy dust-collector main body (with motor and dust collection chamber) carried on the back, and the lightweight coupling-hose part (wand and nozzle) held in hand. This segmentation allows the main body to be positioned anywhere (including stairs) while the flexible hose reaches the cleaning surface, providing adaptability to various locations including stairs where castors cannot be used.
Solution Approach 2:
The flexible coupling hose acts as an intermediary between the dust-collector main body and the cleaning nozzle. It allows the main body to be positioned independently (carried on back) while still delivering suction to the cleaning surface, enabling operation in locations like stairs where the main body cannot be placed on the floor.
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, while keeping the hose system hygienically oriented and easily maneuverable.
Implementation Method 1
a suction fan (25) that rotates to generate a suction draft
Data Source
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.