Backpack Suspension Module With Dual Springs for Variable Loads
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Solution Overview
Problem
Existing backpack suspension systems have limited load threshold, occupy excessive space, and are unsuitable for varying load conditions, particularly for children's bags or heavy outdoor gear.
Innovation Solution
A suspension module with a dual elastic component system, comprising a first elastic component with a threshold range of 2-6 kg and a second elastic component with a threshold range of not less than 6 kg, allowing for a combined load threshold of 2-12 kg, and featuring a compact design with reduced friction and noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a built-in one-way spring structure is used for shock absorption, then the buffering effect is improved, but the load threshold range is limited and it does not work for low or high loads
Solution Approach 1:
The suspension system is divided into two independent spring components: a first spring for light loads (2-6 kg) and a second spring for heavy loads (6-12 kg). Each spring segment handles specific load ranges, allowing the system to adapt to varying weights while maintaining reliable buffering effects across the entire range.
Solution Approach 2:
The system dynamically switches between different spring configurations based on load conditions. When the load exceeds 6 kg, the second spring engages to provide additional support, while the first spring continues to function. This dynamic adaptation ensures optimal buffering performance across different weight scenarios.
2Strength
If an external mechanical slide rail structure is used, then the load bearing capacity is improved, but the structure becomes complex and occupies large space
Solution Approach 1:
The patent combines multiple spring components into a single integrated suspension system housed within one housing. The first and second springs work together in a unified structure, eliminating the need for separate external slide rail mechanisms while maintaining high load-bearing capacity through the coordinated action of both springs.
3Device complexity
If an elastomeric shoulder strap is used for buffering, then the structure is simple, but the buffering effect is limited and service life is reduced
Solution Approach 1:
The patent employs elastic components (springs) made from appropriate materials that combine structural simplicity with superior buffering performance. The spring-based system maintains mechanical simplicity while dramatically improving reliability and service life compared to elastomeric materials, achieving both simplicity and effectiveness.
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
The dual elastic component system provides a wide load threshold range, occupies minimal space, and effectively absorbs shocks under varying load conditions, enhancing user comfort.
Implementation Method 1
a first elastic component, having an upper end connected to the puller and a lower end connected to the housing; and a second elastic component, having an upper end connected to the movable rod and a lower end connected to the housing
Data Source
AI summary
A suspension module and backpack with a shock absorbing effect, including: a housing, having an opening at an upper side thereof and defining one or more guide recesses; a puller, extending through the opening and slidably connected to the one or more guide recesses, wherein the puller defines a cavity, in which a movable rod is provided, one end of the movable rod extends through the cavity and is movable up and down, and a pin is provided on the movable rod to limit a movable distance of the movable rod; a first elastic component, having an upper end connected to the puller and a lower end connected to the housing; and a second elastic component, having an upper end connected to the movable rod and a lower end connected to the housing.