Nested Housing Protrusions for Vibration Damping in Electric Storage
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Solution Overview
Problem
Existing electric storage apparatuses experience looseness or play between the first and second external housings, leading to unwanted vibrations and reduced durability, due to the smaller size of the first external housing compared to the second, resulting in gaps that allow for movement within the second housing.
Innovation Solution
The design incorporates an inclined surface on the first external housing that is more spaced apart from the second external housing in the insertion direction, along with protrusion portions on either the first or second housing surfaces, which abut and restrict movement, preventing looseness and play, allowing for easy insertion and enhanced rigidity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the first external housing is made smaller than the second external housing to enable nesting, then the electric storage apparatus can be compact and the first housing can be easily inserted into the second housing, but gaps are formed between the housings causing looseness and unwanted vibrations
Solution Approach 1:
The patent applies local quality by creating localized protrusion portions on the first external housing that extend into the gap between the first and second housings. These protrusions are strategically positioned to fill specific void spaces without requiring a complete redesign of the overall housing dimensions, thus maintaining compactness while locally addressing the vibration problem.
Solution Approach 2:
The patent employs asymmetry by designing the protrusion portions with specific geometric configurations that are not symmetrically distributed. The protrusions have varying shapes and positions that are optimized to prevent movement in specific directions, creating an asymmetric constraint system that effectively eliminates looseness while maintaining the nested housing structure.
2Ease of operation
If the first external housing is made smaller than the second external housing, then the first housing can be housed in the second housing, but gaps exist between the housings allowing looseness or play to occur
Solution Approach 1:
The patent applies preliminary action by pre-forming the protrusion portions on the first external housing before assembly. These protrusions are designed in advance to fit into corresponding recesses or spaces in the second housing, guiding the insertion process and automatically establishing the correct positional relationship between the nested housings, thereby preventing looseness from the outset.
Solution Approach 2:
The protrusion portions act as intermediary elements between the first and second external housings. These protrusions physically bridge the gap that would otherwise exist between the nested housings, providing a mechanical link that maintains stable positioning while still allowing the first housing to be inserted into the second housing.
3Ease of manufacture
If gaps exist between the first and second external housings, then the first housing can be easily inserted into the second housing, but unwanted vibrations are applied to the electric storage device
Solution Approach 1:
The patent applies local quality by creating localized protrusion portions on the first external housing that extend into the gap between the first and second housings. These protrusions are strategically positioned to fill specific void spaces without requiring a complete redesign of the overall housing dimensions, thus maintaining compactness while locally addressing the vibration problem.
Solution Approach 2:
The patent converts the harmful effect of gaps (which cause vibration) into a beneficial feature by designing the protrusion portions to utilize the existing gap space. Instead of eliminating the gap entirely (which would complicate assembly), the protrusions are designed to fit within the gap, transforming the previously harmful void space into a functional element that provides vibration damping and positional stability.
Data Source
AI summary
Provided is an electric storage apparatus including: a first external housing for holding at least one storage device that includes a first vertical wall portion for surrounding at least one electric storage device; and a second external housing including a second vertical wall portion for surrounding the first vertical wall portion and an open portion formed at an upper end. An outer surface of the first vertical wall portion is an inclined surface that is inclined to the second vertical wall portion, and one of an outer surface of the first vertical wall portion and an inner surface of the second vertical wall portion includes a protrusion portion that protrudes toward the other.