Electric Mower Housing With Offset Ventilation Holes
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Solution Overview
Problem
Existing housings for electric mowers face challenges in securing both ventilation and waterproofing properties, as water ingress can lead to failures or malfunctions when the machine is exposed to wind, rain, or washing.
Innovation Solution
A housing design with offset outer and inner holes, featuring a gutter member that forms a secondary enclosed space, allowing air circulation while preventing water entry through the inner hole, using a gutter member disposed over two adjacent outer circumferential plates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If openings are formed in the outer circumferential plates for ventilation, then heat dissipation is improved, but water can enter the housing causing failures or malfunctions
Solution Approach 1:
The housing is segmented into multiple enclosed spaces (first enclosed space for electronics, second enclosed space for water collection) separated by the gutter member. This segmentation allows ventilation openings to exist while preventing water from reaching the electronic components through the offset hole configuration and water drainage path design.
Solution Approach 2:
The gutter member acts as an intermediary element between the outer surface and the electronic components. It provides a water drainage function while allowing the ventilation openings to remain open, mediating between the need for heat dissipation and water protection by directing water away from the housing interior.
2Object-affected harmful factors
If a complex waterproofing mechanism is added to prevent water ingress, then waterproof property is improved, but device complexity increases
Solution Approach 1:
Instead of making the entire housing complex and waterproof, only specific local areas are protected. The gutter member and offset hole configuration provide localized waterproofing at critical entry points while maintaining simplicity in the overall housing structure and other non-critical areas.
Solution Approach 2:
The housing structure itself provides waterproofing through its geometric design (offset holes, gutter member configuration) rather than requiring additional active waterproofing mechanisms. The structure serves its own waterproofing function through passive geometric features that guide water away from vulnerable areas.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design effectively secures ventilation and waterproofing properties with a simple configuration, ensuring the operation accuracy of electronic components and maintaining excellent mowing performance.
Implementation Method 1
water which has entered the second enclosed space from the outer holes is easily passed through the enclosed space of the gutter member and discharged from the outer holes to the outside of the housing
Data Source
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AI summary
A housing holding parts includes a plurality of outer circumferential plates 6 connected with each other to form a first enclosed space, one or more of the outer circumferential plates 6 having a total of two or more outer holes 8 formed therein, and a gutter member 7 connected to at least two outer circumferential plates 6, the gutter member 7 having an inner hole 9 formed therein, wherein a second enclosed space is formed by the outer circumferential plates 6 and the gutter member 7, the outer holes 8 communicate with the second enclosed space, and the inner hole 9 is provided to be offset from each of the lines passing through each of the outer holes 8 which are perpendicular to the outer circumferential plates 6 in which the outer holes 8 are formed.