Convertible Bag With Retractable Straps For Handbag Backpack Conversion
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Solution Overview
Problem
Conventional handbags and backpacks have limitations, such as discomfort and instability when carrying heavy loads, and the additional handle on backpacks is often short and unsightly, causing inconvenience in crowded spaces.
Innovation Solution
A convertible bag with retractable straps that can transform from a handbag to a backpack configuration, featuring a handle and two retractable straps that extend through apertures to form backpack straps, allowing for adjustable and comfortable carrying styles without presenting a trip hazard.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a backpack is equipped with an additional handle for handbag-style carrying, then the bag can be carried in different configurations, but the handle becomes short and unsightly, causing inconvenience in crowded spaces
Solution Approach 1:
The bag incorporates retractable straps that can dynamically adjust between retracted and extended states. When not needed for backpack carrying, the straps are retracted to maintain a clean appearance and avoid obstruction. When backpack configuration is needed, the straps extend to provide proper shoulder strap length. This dynamic transformation resolves the contradiction between having a long handle for handbag carrying and maintaining a compact appearance when not in use.
2Ease of operation
If retractable straps are made accessible for converting to backpack configuration, then the bag can be easily transformed, but the straps may present a trip hazard when extended
Solution Approach 1:
The retractable straps are nested within the bag structure when not in use, with apertures positioned in the base or side surfaces. The straps can be extended through these apertures when backpack configuration is needed, and then retracted back into the bag. This nesting approach allows easy conversion while minimizing the trip hazard by keeping the straps hidden when not needed.
Solution Approach 2:
The apertures in the base or side surfaces serve as intermediaries that control strap access. These apertures allow the straps to be extended for backpack carrying but can be positioned and designed to minimize obstruction in crowded spaces. The aperture acts as a mediator between the strap storage and the external environment, enabling controlled access.
3Ease of operation
If the handle is made longer for comfortable handbag carrying, then the carrying comfort improves, but the handle becomes more obtrusive and unsightly when not in use
Solution Approach 1:
The bag uses retractable straps that can dynamically change their state. When the bag is carried as a handbag, the straps are retracted to maintain a clean, unobtrusive appearance. When backpack configuration is needed, the straps extend to provide proper shoulder strap length and comfort. This dynamic transformation allows the handle area to maintain both long handle functionality and clean appearance as needed.
Data Source
AI summary
A hooked clasp, for use along with a second hooked clasp in a fastener for releasably securing strap ends to be adjoined, the hooked clasp having a strap attachment means towards a strap end of the hooked clasp and a corresponding hook further from the strap end of the clasp in a longitudinal direction, the hook having a return directed towards the strap end of the clasp and thereby configured such that, when arranged with a corresponding hook on a second hooked clasp in the opposite longitudinal direction, the hook can catch the corresponding hook on the second hooked clasp, the hooked clasp having an orifice, the return and orifice dimensioned such that the return of the hooked clasp can pass into the orifice of the second hooked clasp without deforming the hook before the hook catches the hook on the second hooked clasp, and the return having an inner side comprising a magnet.