Portable backpack vacuum having fold-in harness
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Solution Overview
Problem
Existing portable backpack vacuums face challenges in supporting the upper housing and harness after the lower housing is removed, as there is no ergonomic solution for stable placement on a support surface.
Innovation Solution
A fold-in harness member is pivotably connected to the upper housing, allowing it to rotate from a deployed position to a stowed position when the lower housing is detached, enabling the vacuum to stand level on a support surface using flexible or hinge connectors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the lower housing is removed from the upper housing for emptying contents, then the dust collection capacity is improved, but the stability and support capability of the vacuum on a support surface deteriorates
Solution Approach 1:
The harness member is designed with pivotable connections that allow it to dynamically change position between a deployed state (when lower housing is attached) and a stowed state (when lower housing is removed). This dynamic adjustment enables the harness to adapt to different operational states, providing stability both during use and when the dust container is detached for emptying.
Solution Approach 2:
The harness member is divided into multiple segments connected by pivotable joints, allowing independent movement of each segment. This segmentation enables the harness to fold inward and reconfigure its structure when the lower housing is removed, creating a stable support configuration that compensates for the loss of the lower housing's structural support.
2Ease of operation
If the harness member is made rigid for ergonomic support, then the comfort during use is improved, but the ability to accommodate the lower housing removal and provide stable support deteriorates
Solution Approach 1:
The harness member transitions from a static rigid structure to a dynamic articulated structure with pivotable connections. This allows the harness to maintain rigidity and ergonomic support during use, while simultaneously being able to flex and reconfigure when the lower housing is removed, thus adapting to both operational states.
Solution Approach 2:
The harness member is designed to perform multiple functions: providing ergonomic support during vacuum operation and providing stable support on the support surface when the lower housing is removed. The pivotable connections enable the same harness structure to fulfill both roles effectively.
3Strength
If the harness member is fixed in position for structural integrity, then the strength is improved, but the ease of placement and stability when lower housing is removed deteriorates
Solution Approach 1:
The harness member is segmented into multiple rigid components connected by pivotable joints. Each segment maintains structural integrity and strength, while the connections between segments allow the entire harness to be easily positioned and configured when the lower housing is removed, enabling simple placement on support surfaces.
Data Source
AI summary
A portable backpack vacuum having a pair of housing members and a fold-in harness member that is pivotably movable relative to an upper housing member between a deployed position when the portable backpack vacuum is in use to a stowed position when the portable backpack vacuum is not in use and a lower housing is removed from the upper housing. In this way, the portable backpack vacuum may stand level on the support surface.