Detachable Spring Mechanism for Load-Adaptive Backpack
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Solution Overview
Problem
Existing pressure-relieving backpacks fail to adapt to varying load requirements, leading to discomfort and improper stress distribution when carrying heavy loads, as the elastic components cannot be easily replaced to match different load environments.
Innovation Solution
A pressure-relieving backpack design featuring a detachable spring mechanism with a compression spring and retractable rod housed in a hollow casing, allowing users to replace the spring mechanism to accommodate different load conditions, ensuring stable and comfortable carrying.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed connection is employed among the pressure reducing plate, elastic belt, fixing belt and backpack body to ensure stable and reliable operation, then the reliability is improved, but the adaptability deteriorates because the elastic belt cannot be replaced in different use environments
Solution Approach 1:
The pressure-relieving assembly is divided into separable components: the elastic belt, pressure reducing plate, and fixing belt can be detached from the backpack body. This segmentation allows users to remove or replace specific components based on different load requirements, resolving the contradiction between fixed connection reliability and adaptability to varying environments.
Solution Approach 2:
The patent transforms the fixed connection into a dynamic, adjustable connection system. The detachable design enables the backpack to adapt its structural configuration based on external conditions, allowing the system to transition between different states (with or without pressure-relieving components) to match varying load environments.
2Ease of operation
If the first elastic belt is used to provide cushioning effect and reduce shoulder load, then the user comfort is improved, but when the load exceeds the rated load, the elastic belt will be severely deformed and elongated, causing improper stress distribution and discomfort
Solution Approach 1:
The patent provides users with the capability to perform preliminary assessment of load conditions and proactively adjust the backpack configuration by adding or removing pressure-relieving components before carrying heavy loads, preventing the elastic belt from being severely deformed and ensuring proper stress distribution from the outset.
Solution Approach 2:
The patent enables changing the mechanical parameters of the backpack system by adding or removing components. When heavy loads are anticipated, users can remove the elastic belt to prevent excessive deformation and maintain proper stress distribution, effectively changing the system's load-bearing characteristics to match the external conditions.
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 the backpack to meet various load use requirements by allowing the user to replace the compression spring, maintaining comfort and reducing stress on the shoulders across different load environments.
Implementation Method 1
the spring mechanism comprises a compression spring and a retractable rod, the compression spring is sleeved around and position-limited with respect to the retractable rod
Implementation Method 2
the spring mechanism comprises a compression spring and a retractable rod
Data Source
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AI summary
A pressure-relieving back pack, comprising: a pack body (1), a pressure-relieving plate (2), a pressure-relieving assembly, two straps (4), and a supporting plate. The supporting plate is provided at a rear part of the pack body (1). The pressure-relieving plate (2) is provided at a side of the rear part of the pack body (1) near to the back. The pressure-relieving assembly comprises a spring mechanism and a hollow casing (33). The casing (33) is mounted at the rear part of the pack body (1). The spring mechanism is detachably provided inside the casing (33). The spring mechanism comprises a compression spring (31) and a retractable rod (32). The compression spring (31) is sleeved around and position-limited with respect to the retractable rod (32). A second end (322) of the retractable rod (32) and the compression spring (31) are position-limited within the casing (33). A first end (321) of the retractable rod (32) is located outside the casing (33) and can extend and retract upward and downward relative to a first end of the casing (33). The first end (321) of the retractable rod (32) and a lower end of the pressure-relieving plate (2) are detachably connected. An upper end of the pressure-relieving plate (2) is connected to an upper end of the strap (4). A lower end of the strap (4) is connected to a lower end of a back side of the pack body (1). The pressure-relieving back pack can meet different loading needs by changing the compression spring (31) of the pressure-relieving assembly.