Sleeping Bag Rigid Frame Design to Prevent Twisting and Entanglement

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Solution Overview

Problem

Standard sleeping bags often twist and entangle users during sleep, restricting movement and making it difficult to exit the bag quickly, which can lead to discomfort and safety issues, especially in outdoor settings.

Innovation Solution

A sleeping bag system with a rigid frame formed by interconnecting poles and sleeves, maintaining the bag in a taut position to prevent twisting and allowing easy exit, while being compact and lightweight for transportation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a standard sleeping bag is used, then it is compact and lightweight for carrying, but it twists and entangles the user during sleep

Engineering Contradiction:

Improveuser movement freedomVSAvoidsleeping bag structure

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The sleeping bag is divided into functional zones: a rigid frame structure providing structural support, a sleeping bag body for insulation, and sleeves for securing the frame. This segmentation allows each component to serve its specific function while working together as a unified system that prevents entanglement.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The rigid frame acts as an intermediary element between the ground and the sleeping bag body. It maintains the sleeping bag in a taut, elevated position, preventing it from twisting around the user while still allowing compact storage when disassembled.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Ease of operation

If a standard sleeping bag is used, then it is simple in structure, but it restricts user movement and causes entanglement

Engineering Contradiction:

Improveuser movement freedomVSAvoidsleeping bag weight

Core Design Contradiction:

Ease of operationVSWeight of moving object

Solution Approach 1:

The frame components are designed as thin, flexible poles that can be easily bent and stored within the sleeping bag body when not in use. During sleep, these thin poles form a rigid structure that prevents entanglement without adding significant weight.

Inventive Principle:

Principle #30Flexible shells and thin films

3Ease of operation

If a rigid frame is added to prevent twisting, then user movement freedom is improved, but device complexity and weight increase

Engineering Contradiction:

Improveuser movement freedomVSAvoidframe assembly structure

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The frame is designed to be dynamically configurable - assembled into a rigid structure during sleep to prevent twisting, and disassembled into a compact form for transport. The sleeves and connectors enable quick transformation between these states without complex tools or mechanisms.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS11730290B2Sleeping bag system with rigid frame

Publication Date: 2023.08.22 WOLFFIS PROCUREMENT & INVESTMENTS LLC

AI summary

A sleeping bag system includes a sleeping bag body and a plurality of poles. The sleeping bag body includes one or more sleeves along perimeter edges thereof, and the plurality of poles interconnect to form a frame. The frame is positioned within the one or more sleeves of the bag body to prevent a twisting movement of the sleeping bag body during use. Each sleeve spans a majority of the respective perimeter edge and includes a tunnel that receives a pole of the frame.