Elastic Chest Straps for Backpack Breathing Obstruction
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Solution Overview
Problem
Existing devices for carrying objects, such as backpacks, are uncomfortable to use during physically demanding activities due to their structure, leading to breathing obstruction and other adverse effects.
Innovation Solution
The device incorporates elastic chest straps with an extendable section and adjustable loops, along with elastic shoulder straps to provide a comfortable and secure fit, allowing for chest expansion and minimizing obstruction during heavy breathing, while preventing damage from excessive extension.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If rigid chest straps are used to secure the object firmly, then the object is held securely, but the chest expansion is obstructed during heavy breathing
Solution Approach 1:
The chest straps incorporate an elastic section that changes its length parameter dynamically. The elastic section can extend during chest expansion to accommodate breathing movements, and contract to maintain secure positioning during physical activities. This parameter change allows the straps to adapt between providing firm support and allowing respiratory freedom.
2Object-affected harmful factors
If the elastic section of chest straps is made longer to allow chest expansion, then breathing is less obstructed, but the device becomes less secure and allows more bouncing
Solution Approach 1:
The elastic section's length and elasticity parameters are optimized to provide sufficient extension for breathing while maintaining retraction force for stability. The stopping element introduces a hard limit parameter that prevents over-extension, ensuring the elastic section remains within the range where it can provide both breathing freedom and device stability.
Solution Approach 2:
The stopping element acts as an intermediary mechanism between the elastic section and the rest of the device. It mediates the elastic forces by providing a mechanical stop that prevents excessive extension, thereby maintaining the balance between allowing chest expansion and preventing device bouncing.
3Object-affected harmful factors
If the elastic section can extend freely to accommodate chest expansion, then breathing is facilitated, but the elastic section may be damaged due to exaggerated extension
Solution Approach 1:
The stopping element provides preliminary protection against exaggerated extension by establishing a mechanical limit before damage can occur. This preventive measure counteracts the potential harmful effect of over-extension before it can compromise the elastic section's integrity, ensuring long-term reliability while maintaining breathing facilitation.
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
The device ensures a comfortable and secure fit, allowing for unobstructed breathing and reduced bouncing during physical activities, enhancing user experience by providing a snug and adjustable carrying solution.
Implementation Method 1
An elastic section is provided in the chest straps, said elastic section being elastically extendable in a longitudinal direction of the chest straps
Implementation Method 2
The chest straps can be provided with a stopping element, such as a non-elastic cord or similar, to prevent the elastic section from being elastically extended beyond a predetermined length
Data Source
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AI summary
A device (10) for carrying an object, comprising first and second shoulder straps (11, 12), first and second chest straps (13, 14) to be fitted around the lower chest of a person, and a back portion (15) connecting a first end of the shoulder straps (11, 12) with a first end of the chest straps (13, 14). Second ends of the shoulder straps (11, 12) are connected to the chest straps (13, 14), and second ends of the chest straps (13, 14) are detachably connectable to each other by means of a buckle (16). Lengths of the chest straps (13, 14) are adjustable. Each of the chest straps (13, 14) comprises at least an elastic section, said elastic section being elastically extendable in a longitudinal direction of the chest straps (13, 14). Disclosed is also a backpack comprising such a device.