Backpack Strap Adjustment via Integrated Cord System
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Solution Overview
Problem
Existing large-capacity hiking backpacks require tedious adjustments of shoulder straps for height and tightening, necessitating multiple operations to fit the user's morphology, which can be time-consuming and inconvenient.
Innovation Solution
The backpack features vertically sliding shoulder straps with rear and front cords connected to sliding systems and adjustment/locking mechanisms that allow for simultaneous height adjustment and tightening of the straps while the backpack is worn, utilizing offset pieces to minimize friction and anti-return devices for secure length adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional separate adjustment mechanisms are used for shoulder strap height and tightening, then the backpack can be adjusted to fit user morphology, but the adjustment process becomes tedious and time-consuming requiring multiple operations
Solution Approach 1:
The patent combines the height adjustment function and tightening function into a single integrated cord system. Pulling the cord simultaneously adjusts both the vertical position of the shoulder straps and their tightening around the shoulders, eliminating the need for separate adjustment operations and reducing adjustment time
Solution Approach 2:
The single cord system performs multiple functions: it controls both the vertical positioning of the shoulder straps and the tightening force applied to the shoulders. This multi-functional mechanism allows one component to achieve what previously required two separate adjustment systems
2Adaptability or versatility
If the backpack is designed with adjustable shoulder straps requiring placement on ground for adjustment, then the straps can be positioned according to user size, but the user must remove the backpack to adjust, which is inconvenient
Solution Approach 1:
The patent implements dynamic adjustment capability that allows the shoulder straps to be repositioned while the backpack is being worn. The sliding mechanism and cord system are designed to be operable in the dynamic state of wearing, not just in the static state of ground placement
3Length of moving object
If vertical sliding means are used for shoulder straps, then the height position can be adjusted, but additional adjustment operations are required for tightening
Solution Approach 1:
The patent merges the vertical sliding adjustment mechanism with the tightening mechanism into a single integrated system controlled by one cord. The cord pulls simultaneously on the sliding means and the tightening components, combining what would otherwise be separate adjustment operations into one unified action
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
Enables efficient and optimized adjustment of shoulder straps to fit the user's morphology without removing the backpack, reducing the time and effort required for proper fitting and providing comfortable wear.
Implementation Method 1
these two sliding systems being configured to receive the rear and front cords slidably on their respective sides
Implementation Method 2
two adjustment/locking systems being arranged respectively downstream of the two sliding systems, these two adjustment/locking systems being configured to adjust and keep locked the lengths of the upper portions of the rear and front cords
Implementation Method 3
when the adjustment/blocking systems are unlocked, the mass of the bag ensures a downward force on the rear face of the bag while the shoulder straps are held by the user's shoulders
Data Source
Figure 1~3
Figure 2
AI summary
The invention relates to a backpack (1) including, in particular, a rear surface (2) and two straps (3). Vertical sliding means are arranged between the rear ends (4) of the straps and the rear surface, said rear ends being connected to the upper ends (6) of two rear strings (7). The front ends (5) of the straps are connected to the upper ends (8) of two front strings (9). Two sliding systems (15) are arranged on the two lower lateral sides (14) of the rear surface to receive the respective rear and front strings in a sliding manner. Two adjustment/locking systems (13), arranged downstream of the two sliding systems, are configured to adjust and lock the lengths of the upper portions (7a, 9a) of the rear and front strings separating said sliding systems from the rear and front ends of the straps.