Backpack Hip Belt as Safety Harness Main Strap
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Solution Overview
Problem
Conventional backpacks lack the functionality to serve as both a transport device and a safety harness, requiring additional equipment and time to set up when engaging in activities like climbing, which increases weight and reduces convenience.
Innovation Solution
The hip belt of the backpack is designed as the main belt of a safety harness with leg straps, and the shoulder straps are part of the safety harness, allowing the backpack to function as a dual-purpose transport and safety device, with leg straps that can be stowed for enhanced mobility during non-climbing activities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate safety harness is carried along with the backpack, then safety functionality is provided, but the weight of the luggage increases
Solution Approach 1:
The patent combines the safety harness functionality with the backpack by integrating the hip belt and shoulder straps of the backpack as the main belt and shoulder straps of the safety harness, respectively. This merging eliminates the need for a separate safety harness, reducing luggage weight while maintaining safety functionality.
Solution Approach 2:
The backpack is designed to serve dual purposes: as a transport device for equipment and food, and as a safety harness for climbing activities. The hip belt and shoulder straps simultaneously fulfill both backpack support functions and safety harness functions, making the device universal and multi-functional.
2Reliability
If a separate safety harness is carried along with the backpack, then safety functionality is provided, but the time to unpack and put on the safety harness increases
Solution Approach 1:
The safety harness components are pre-integrated into the backpack structure during manufacturing. The hip belt is designed as the main belt and shoulder straps as the shoulder straps of the safety harness beforehand, so that when the backpack is put on, the safety harness is automatically positioned and ready for use, eliminating the need for unpacking and assembling at the climbing site.
Solution Approach 2:
By merging the safety harness with the backpack as a single integrated unit, the patent eliminates the separate steps of unpacking and putting on a safety harness. The dual-purpose design allows the wearer to transition from backpack-only mode to climbing mode without additional setup time.
3Reliability
If leg straps are arranged on the main strap, then safety harness functionality is provided, but the freedom of movement is impaired during non-climbing activities
Solution Approach 1:
The leg straps are designed to be displaceable along the main strap, allowing dynamic adjustment of their position. During non-climbing activities, the leg straps can be moved to a stowed position in pockets on the backpack, reducing interference with movement. During climbing activities, they can be positioned to provide proper safety harness functionality.
Solution Approach 2:
The safety harness is segmented into adjustable components, with leg straps that can be independently positioned and stowed. This segmentation allows the harness to adapt to different activity modes, providing freedom of movement during walking while maintaining safety functionality during climbing.
4Productivity
If the backpack serves dual purpose as transport and safety harness, then equipment and time are saved, but the device complexity increases
Solution Approach 1:
The backpack components are designed to fulfill multiple functions universally. The hip belt serves as the main belt for both backpack support and safety harness functions. The shoulder straps serve as shoulder straps for both backpack carrying and safety harness functions. This universal design achieves dual functionality without requiring completely separate systems.
Solution Approach 2:
By merging the safety harness system with the backpack structure, the patent reduces the total number of separate components needed. The integration shares common elements (hip belt, shoulder straps, leg straps, connecting elements) between the two functions, which actually simplifies the overall system compared to having separate backpack and safety harness equipment.
Data Source
AI summary
The backpack has a waist strap (14) and two shoulder straps (12), where the waist strap is formed as a main belt of a harness arranged with leg straps (24). The main belt and the leg straps are formed of a supporting strap. The leg straps are arranged at the main belt, and are moved along the main belt.