Backpack Carrier Elastic Connection for Lower Back Load Relief
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Solution Overview
Problem
The existing backpack type assemblies cause strain on the lower back of the user when changing postures due to the hinge positioning between the back plate and waist belt, which leads to increased load on the lower back.
Innovation Solution
Incorporating an elastic member with a flexural rigidity smaller than the back plate, allowing the back plate and waist belt to move independently, reducing the load on the lower back by moving away from the waist belt during posture changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a hinge connects the back plate and waist belt to allow posture change, then the backpack adapts to user movement, but the lower back experiences large load and increased strain
Solution Approach 1:
The patent removes the hinge component from the connection mechanism between the back plate and waist belt. Instead of using a hinge that allows rotation, the invention uses a rigid rod-like member that maintains a fixed connection, thereby eliminating the source of lower back strain while preserving posture adaptation through the overall structure's flexibility
Solution Approach 2:
The patent introduces a counterweight mechanism where the waist belt and its connection to the rod-like member create a balancing effect against the load on the lower back. The rigid connection allows the waist belt to support part of the backpack weight, counterbalancing the force that would otherwise strain the lower back
2Stability of the object's composition
If the back plate and waist belt are rigidly connected, then structural stability is improved, but the backpack cannot adapt to user posture changes
Solution Approach 1:
The patent divides the connection mechanism into separate functional segments: a rigid rod-like member for structural stability and connection, and the waist belt system for adaptation. The rod-like member connects to the back plate at one end and the waist belt at the other, allowing each component to fulfill its specific function without compromising the other
Solution Approach 2:
The patent creates a dynamic system where the rigid rod-like member maintains structural integrity while the connection to the waist belt allows for controlled movement and adaptation. The system transitions from a purely rigid hinge connection to a semi-rigid structure that maintains stability while permitting necessary posture adjustments
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 configuration reduces strain on the lower back by distributing the load to the shoulders, improving comfort and reducing discomfort during posture changes.
Implementation Method 1
an elastic member having a flexural rigidity smaller than a flexural rigidity of the back plate. A force applied to the connection mechanism from one of the back plate and the waist belt may be transmitted through the elastic member to the other of the back plate and the waist belt
Data Source
AI summary
A backpack type assembly may include a backpack type carrier configured to be worn by a user and a device configured to be attached to the backpack type carrier. The backpack type carrier may include a pair of shoulder straps configured to be worn on both shoulders of the user, a back plate to which the pair of shoulder straps and the device are attached, a waist belt configured to be wrapped around a waist of the user, and a connection mechanism configured to connect between the back plate and the waist belt. The connection mechanism may include an elastic member having a flexural rigidity smaller than a flexural rigidity of the back plate. A force applied to the connection mechanism from one of the back plate and the waist belt may be transmitted through the elastic member to the other of the back plate and the waist belt.