Segmented Seal Cover for Inflator Assembly
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Solution Overview
Problem
Conventional inflators face assembly sequence limitations and high defect rates due to the deformation and damage of the seal cover during assembly, leading to inefficiencies and increased production costs.
Innovation Solution
The inflator features a seal cover composed of multiple connected segments that can be mounted radially around the piston rod, allowing for flexible assembly and increased durability by distributing stress across multiple components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the seal cover is pushed greatly to be inserted into the cylinder, then the seal cover can be mounted securely to the cylinder, but the seal cover is damaged and broken easily during assembly
Solution Approach 1:
The seal cover is divided into multiple segments that can be assembled together. This segmentation allows the seal cover to be mounted without requiring excessive pushing force on a single fragile component, thereby preventing damage while achieving secure mounting. The multiple segments distribute the mechanical stress during assembly.
2Device complexity
If the seal cover is made as a single integrated piece, then the structure is simple, but the assembly sequence is limited and the component is easily damaged during assembly
Solution Approach 1:
The seal cover is segmented into multiple pieces that can be assembled in different sequences. This segmentation removes the constraint that requires the seal cover to be mounted before the piston, allowing greater assembly flexibility and convenience while maintaining structural integrity.
3Reliability
If the outer diameter of the side flange of the seal cover is made bigger than the inner diameter of the opening of the cylinder, then the seal cover can be securely clamped to the cylinder, but the seal cover must be pushed greatly causing deformation and damage
Solution Approach 1:
The seal cover is divided into multiple segments with side flanges that can be assembled together. This allows the flanges to engage with the cylinder's annular grooves without requiring excessive pushing force on a single large component, thereby achieving secure clamping while reducing assembly difficulty and preventing damage.
Data Source
AI summary
An easily assembled inflator has a cylinder, a piston rod, a piston, an assembled seal cover and a sleeve. Because the assembled seal cover has at least two cover segments, the cover segments can be mounted around the piston rod by being connected together radially. Then the piston does not interfere with the cover segments and the sequence of the assembly of the piston and the assembled seal cover is not limited, as well. Thus, the assembly is more convenient and flexible. Besides, because the assembled seal cover has multiple cover segments, the whole assembled seal cover can bear more stress and has more room to be deformed. Then the assembled seal cover is not damaged and broken easily when pushed in to the cylinder. To sum up, the inflator as mentioned above is easy to be assembled and is not damaged easily during the assembly.