Battery Box Cover Overlap Structure for Rainproof Battery Access
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Solution Overview
Problem
Existing working machines cannot effectively prevent water from reaching the battery when used outdoors in rainy conditions, especially when the battery cover is open.
Innovation Solution
The working machine design includes a battery box with a top cover and a battery cover that partially overlap both in open and closed states, featuring a recess on the battery cover to guide water away and a water tray inside the box to collect any entering water, ensuring the battery remains dry.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the battery cover is made pivotable to enable easy access to the battery, then the ease of operation is improved, but the reliability of water protection deteriorates when the cover is open
Solution Approach 1:
The battery cover is designed with a recessed portion that creates an overlapping relationship with the top cover in both open and closed states. This preliminary geometric configuration prevents water from reaching the battery by establishing a water-shielding structure before water exposure occurs, counteracting the potential harmful effect of an open cover position.
2Reliability
If the battery cover is kept closed to prevent water entry, then the water protection reliability is improved, but the ease of operation for battery access deteriorates
Solution Approach 1:
The recessed portion on the battery cover creates an overlapping water-shielding structure with the top cover that functions in advance to prevent water entry. This allows the cover to remain closed for protection while maintaining the ability to open for access, as the shielding geometry is established by the recess design rather than requiring the cover to be permanently sealed.
3Device complexity
If the battery cover design is simplified to a single flat structure, then the device complexity is reduced, but the ability to prevent water entry when open deteriorates
Solution Approach 1:
Instead of making the entire battery cover complex, only a specific local portion is designed as a recessed structure. This localized modification creates the overlapping water-shielding relationship with the top cover while keeping the rest of the cover structure simple and easy to manufacture.
Solution Approach 2:
The recessed portion introduces a vertical dimension change to the otherwise flat battery cover surface. This dimensional modification creates the overlapping relationship with the top cover that provides water protection, transforming a two-dimensional flat structure into a three-dimensional water-shielding configuration.
Data Source
AI summary
A working machine may include a battery box and a battery detachably attached to the battery box. The battery box may include a top cover, and a battery cover having a shape that covers the battery attached to the battery box and being pivotable about a pivot axis with respect to the top cover. When the battery box is viewed in a top plan view in an open state in which the battery cover is open, the battery cover and the top cover may at least partially overlap with each other. When the battery box is viewed in the top plan view in a closed state in which the battery cover is closed, the battery cover and the top cover may at least partially overlap with each other.