Backpack With Retractable Roller Raincoat Mechanism
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Solution Overview
Problem
Conventional backpacks often result in the misplacement of raincoats after use and can expose their contents to wetting during precipitation when the raincoat is deployed, as they are typically separate items.
Innovation Solution
A backpack design featuring an integral raincoat with a retractable roller mechanism and strap, allowing the raincoat to be easily deployed and stowed within the backpack, preventing water ingress and misplacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a raincoat is stored separately in a backpack, then the backpack structure remains simple, but the raincoat can be misplaced after use and contents can get wet during precipitation
Solution Approach 1:
The patent combines the raincoat and backpack into a single integrated unit. The raincoat is permanently attached to the backpack body, creating a unified structure where the raincoat cannot be misplaced. This merging eliminates the reliability issue of separate storage while adding the retractable mechanism to manage complexity.
Solution Approach 2:
The patent introduces a retractable roller mechanism that allows the raincoat to be dynamically deployed and stowed. The raincoat transitions between a compact retracted state during normal use and an extended deployed state when needed, providing functional flexibility without permanent structural complexity.
2Ease of operation
If the raincoat is permanently attached to the backpack, then misplacement is prevented, but the mechanism for deployment and stowing becomes more complex
Solution Approach 1:
The retractable roller mechanism enables dynamic deployment and stowing of the raincoat. The roller allows the strap to be pulled out smoothly for deployment and retracted automatically or manually for stowing, providing ease of operation through mechanical simplicity.
Solution Approach 2:
The retractable mechanism is designed to be self-contained, requiring no external tools or complex operations. The user simply pulls the strap to deploy the raincoat and releases it to allow automatic retraction, making the system easy to operate without adding significant complexity.
3Object-affected harmful factors
If the raincoat is removed from the backpack during rain, then the raincoat can be used, but the contents within the backpack can get wet
Solution Approach 1:
The retractable mechanism allows the raincoat to be quickly deployed before rain begins or at the onset of precipitation. The pre-positioned raincoat on the backpack enables immediate protection without the delay of searching for or retrieving a separate raincoat, preventing water ingress while maintaining ease of operation.
Solution Approach 2:
By integrating the raincoat with the backpack, the system ensures that when the raincoat is deployed, the user is protected while the backpack remains positioned on the user's back, continuously protecting the contents. The merged structure ensures both user protection and content protection occur simultaneously.
Data Source
AI summary
A backpack that has an integral raincoat. The backpack comprises of a bag that has shoulder straps. The bag has a top, a bottom, a front and rear side, the shoulder straps are attached to the rear side. The rear side of the backpack defines a central opening that defines a first compartment that runs from a top rear side of the backpack toward a bottom rear side of the backpack. A retractable roller mechanism has a strap attached to the roller mechanism and the mechanism is attached to the first compartment of the backpack. A raincoat is permanently attached to the strap's end not attached to the roller mechanism. The bag defines at least one front compartment in the front of the bag.