Drip-proof Structure for Electronic Components Using Elastic Packings
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Solution Overview
Problem
Existing drip-proof structures for electronic components face issues with operability and size, as they either compromise on usability due to rubbery sheets or increase component count and size with separate waterproof cases.
Innovation Solution
A drip-proof structure for electronic components that integrates elastic packings and a cover to seal gaps, allowing for effective drip-proofness and improved operability while downsizing the component by using a combination of molded synthetic resin cases and packings to create a compact, hermetically sealed design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a rubbery drip-proof sheet is installed to seal the gap between the opening and the rotary body, then drip-proofness is improved, but operability of the operating portion deteriorates
Solution Approach 1:
The sealing function is segmented from the operating portion. The elastic packing is installed in a groove on the case, separate from the rotary body, so that the rotary body does not need to deform or interact with the sealing element during operation. This segmentation allows the sealing function to be performed independently without affecting operability.
Solution Approach 2:
The elastic packing acts as an intermediary sealing element positioned between the case and the rotary body, but not in direct contact with the operating portion. The groove structure mediates the sealing action, allowing the packing to seal the gap while the rotary body rotates freely without interference.
2Reliability
If a separate waterproof case is provided to cover the electrical function portion, then drip-proofness is improved, but the number of components and size increase
Solution Approach 1:
The sealing function is merged into the existing case structure through the groove and elastic packing arrangement. Instead of adding a separate waterproof case, the invention integrates the sealing mechanism into the case itself, thereby preventing liquid ingress without increasing the number of components or overall size.
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 solution enhances drip-proofness and operability while reducing the size of the electronic component, ensuring effective sealing and ease of operation without increasing the number of components or size significantly.
Implementation Method 1
an elastic packing is installed in a groove on the case so as to seal a gap between an opening and a rotary body
Data Source
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AI summary
This drip-proof structure of an electronic component comprises packings 250 (250a - 250d) disposed between a surrounding area of an opening H1 of first and second cases 20, 70 and a surrounding area of an exposure opening 305 of a cover 300. The packings 250 prevent liquid from entering from the exposure opening 305 of the cover 300 and passing between the first and second cases 20, 70 and the cover 300.