Packing Member Locking Mechanism for Shock Absorber
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Solution Overview
Problem
Conventional packing members face challenges in effectively holding shock absorbing members without compromising the rigidity of the base member, often requiring additional adhesives or complex structural modifications to maintain the folded shape and prevent unfolding.
Innovation Solution
A base member is formed from a single sheet element with specific cut and folded portions that create a square tube structure to hold the shock absorbing member, utilizing a second holding portion with an engagement hole and lock portion to maintain the folded shape without additional adhesives or increased size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the base member is formed by cutting and raising parts to create a folded square tube structure, then the shock absorbing member can be securely held, but the base member may lose rigidity and unfold
Solution Approach 1:
The base member is segmented into functional regions: a placement portion for holding the shock absorbing member, side portions that fold upward to cover side surfaces, a top surface portion that folds to cover the top, and a second holding portion with engagement features. This segmentation allows each region to perform its specific function while maintaining overall structural integrity through the single sheet element construction
Solution Approach 2:
The folded side portions and top surface portion are nested within the confines of the placement portion, creating a compact square tube structure. The second holding portion with its engagement hole and protruding part is nested within the base member structure, providing reinforcement without adding external components. This nested arrangement maintains rigidity while enabling the holding function
2Strength
If additional adhesives or fastening materials are used to maintain the folded shape, then the base member rigidity is improved, but the device complexity and manufacturing process become more complex
Solution Approach 1:
The holding function and the rigidity-maintaining function are merged into a single integrated base member structure. The second holding portion with the engagement hole and protruding part is directly formed from the same sheet element as the placement portion and side portions, eliminating the need for separate fastening components or adhesives. This merging reduces device complexity while maintaining structural strength
Solution Approach 2:
The base member is designed to be self-reinforcing through its own structure. The second holding portion with the engagement hole and protruding part provides internal reinforcement that maintains the folded shape without requiring external adhesives or fastening materials. The structure serves itself by incorporating the reinforcement features directly into the base member geometry
3Strength
If the base member size is increased to maintain rigidity after folding, then the base member strength is improved, but the packing member volume increases
Solution Approach 1:
The base member transitions from a two-dimensional sheet to a three-dimensional folded structure that efficiently uses space. The side portions fold upward and the top surface portion folds down to create a compact square tube that holds the shock absorbing member vertically. This dimensional transformation provides structural rigidity without increasing the horizontal footprint, maintaining compact packing volume while achieving the required strength
Data Source
AI summary
A packing member includes a shock absorbing member and a base member. The base member has a first holding portion having a placement portion on which the shock absorbing member is placed, a first side portion, a top surface portion, and a second side portion. The second side portion has an engagement hole. The base member further has a second holding portion which protrudes upward from the side edge of the placement portion opposite from its side connecting to the first side portion. The second holding portion is disposed between the shock absorbing member and the second side portion, and has a base portion and a lock portion. The lock portion, by being folded at the boundary with the base portion, protrudes outward via the engagement hole, and engages with an edge of the engagement hole.