Backpack Pivoting Bracket for Controlled Load Placement
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Solution Overview
Problem
Existing backpack-like carrying devices become difficult to pick up or set down when loaded with heavy weights, leading to potential injuries or musculoskeletal damage due to uncontrolled placement.
Innovation Solution
A pivoting bracket on the carrying frame allows the device to be lowered onto the ground for controlled placement and lifting, with a stable design that absorbs weight, and can be used as a cart with wheels, enhancing ease of use and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If heavy loads are carried on the back using a backpack-style carrying frame, then the load capacity is improved, but the ease of picking up and setting down the device deteriorates
Solution Approach 1:
The bracket is designed to be pivotable about a horizontal axis, transitioning between a raised position (when the device is worn on the back) and a lowered position (when setting down or picking up the device). This dynamic adjustment allows the bracket to adapt to different operational states, facilitating easier handling of heavy loads without compromising load capacity.
Solution Approach 2:
The pivotable bracket acts as an intermediary element between the carrying frame and the ground. When lowered, it provides a stable intermediate support point that reduces the direct impact on the user's back during setting down and picking up operations, thereby easing the operation while maintaining heavy load capacity.
2Weight of moving object
If heavy loads are carried on the back using a backpack-style carrying frame, then the load capacity is improved, but the risk of injury and musculoskeletal damage increases
Solution Approach 1:
The pivotable bracket provides a cushioning effect by allowing controlled lowering and raising of the device. When setting down, the bracket absorbs impact forces through its pivoting motion, preventing sudden jolts to the user's back. When picking up, the bracket can be lowered first to support part of the weight, reducing the strain on the user's musculoskeletal system before the full load is transferred to the back.
Solution Approach 2:
The dynamic pivoting capability of the bracket allows it to adapt to the user's movements during lifting and lowering operations, providing continuous support and reducing peak forces on the back, thereby mitigating injury risk while maintaining high load capacity.
3Reliability
If the bracket is made stable to absorb weight, then the reliability is improved, but the device complexity increases
Solution Approach 1:
The bracket achieves stability through its pivotable design rather than through complex structural reinforcement. By allowing controlled movement between raised and lowered positions, the bracket dynamically adapts to load conditions, providing reliable weight absorption during critical operations (picking up and setting down) while maintaining a relatively simple overall structure.
Solution Approach 2:
The bracket is designed as a separate, modular component that can be independently pivoted and positioned. This segmentation allows the stability function to be isolated to a specific component with a straightforward pivot mechanism, rather than requiring complex reinforcement of the entire carrying frame, thus maintaining simplicity while achieving reliability.
Data Source
Figure 1
Figure 2
AI summary
The backpack type carrying device has a load-receiving support stand (1) that is provided on the shoulder belt. A bracket (9) is pivoted about a horizontal axis on the support frame in the installation area on the ground. The bracket is formed as a closed frame. A frame section (11) is pivotally mounted on the support frame. The supporting frame is provided with an abutment portion for a stopper element (14). The stop portion of the support frame is formed by a frame profile (15).