Electric Storage Housing Snap-Fit Assembly for Vibration Resistance
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Solution Overview
Problem
Existing electric storage apparatuses require complicated coupling work to maintain the positional relationship between the first and second external housings, which can be disrupted by vibrations, making assembly and maintenance challenging.
Innovation Solution
The electric storage apparatus incorporates engaging portions on the first and second external housings, allowing them to be easily positioned and maintained in a constant relationship through projections and opening portions, reducing the need for complex coupling and enhancing durability and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If coupling members such as screws are used to couple the first external housing and the second external housing at multiple portions, then the positional relationship between the housings is maintained under vibration, but the assembly and maintenance work becomes complicated
Solution Approach 1:
The invention integrates the coupling function directly into the housing structures by forming engagement protrusions on the first external housing and corresponding engagement recesses on the second external housing. This merging of the coupling mechanism into the housing design eliminates the need for separate coupling members like screws, thereby maintaining positional stability under vibration while simplifying assembly and maintenance operations.
2Reliability
If multiple coupling members are used to secure the housings, then vibration resistance is improved, but the time required for assembly and maintenance increases
Solution Approach 1:
The coupling mechanism is segmented into discrete engagement protrusions and engagement recesses that are integrally formed with the housing structures. This segmentation allows for simple snap-fit assembly without requiring multiple separate coupling operations, thereby reducing assembly and maintenance time while still providing adequate vibration resistance through the distributed engagement points.
Data Source
AI summary
An electric storage apparatus includes a plurality of electric storage devices, each electric storage device including a cell case in which an electrode assembly is accommodated, the cell case having a substantially hexahedral shape, the cell case being formed with an external terminal on one surface thereof, a first external housing for housing the electric storage devices, the first external housing comprising a pair of first main wall portions that are opposed to each other and a pair of first side wall portions that are opposed to each other, the pair of first main wall portions and the pair of first side wall portions defining a first opening at at least one end in a first direction thereof, and a second external housing for housing the first external housing.