Backpack Support Rod Structure for Vertical Load Alignment
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Solution Overview
Problem
Conventional backpacks increase physical burden and exertion due to the vertical downward gravity and force application not aligning, requiring additional balancing forces that affect spinal health and reduce movement range and duration.
Innovation Solution
A backpack structure featuring an inverted U-shaped supporting rod above the backpack body, connected by elastic belts and shoulder straps, ensuring force application and gravity align vertically, providing cushioning and balancing relative movements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the backpack body is placed away from the back of the user with shoulder straps on upper and lower sides, then the backpack can be carried conveniently, but the gravity and force application do not align vertically, creating a force couple that increases physical effort and burdens the spine
Solution Approach 1:
An inverted U-shaped supporting rod is introduced as an intermediary component between the backpack body and the user's shoulders. This rod extends above the backpack body and connects to shoulder straps, serving as a mediator to realign the force transmission path. The supporting rod's structure ensures that the gravitational force on the backpack and the supporting force from the shoulders act along the same vertical line, eliminating the harmful force couple while maintaining carrying convenience.
2Force
If the entire weight of the backpack body is shared through the two shoulder straps, then the backpack can be supported, but extra force must be applied to balance relative movements caused by body displacement, significantly increasing physical exertion
Solution Approach 1:
The inverted U-shaped supporting rod creates a more stable force distribution system that reduces the impact of body displacement. By positioning the rod above the backpack body and connecting it to the shoulder straps, the system achieves a more balanced force state where gravitational forces and supporting forces are better aligned. This reduces the additional forces required to compensate for relative movements during walking, thereby decreasing physical exertion while maintaining full weight support capability.
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
Reduces physical effort and health impact by aligning forces vertically, offering cushioning and balancing user movements, thus enhancing comfort and reducing fatigue.
Implementation Method 1
two elastic connecting belts (23)... providing cushioning for a user during walking and moving, so that relative movements between the user's body and the backpack can be balanced with each other
Data Source
AI summary
The invention discloses a backpack structure, which comprises a backpack body, an inverted U-shaped supporting rod, two elastic connecting belts and two shoulder straps. The inverted U-shaped supporting rod is located directly above the backpack body, has free ends at two ends, and a plurality of positioning grooves are disposed on the inverted U-shaped supporting rod; one end of each of the elastic connecting belts is connected to the free end of the inverted U-shaped supporting rod, and another end is connected to the backpack body; and the shoulder straps are correspondingly disposed on a back side of the backpack body on the left and right, one end of each of the shoulder straps is connected to the positioning groove of the inverted U-shaped supporting rod, and another end is movably connected to a lower side or a side of the backpack body.