Accommodation Box Side-Seal Packing for Smooth Waterproof Cover Attachment
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Solution Overview
Problem
Existing accommodation boxes face difficulties in smoothly attaching the cover portion while maintaining high waterproofness, as strong force is required to ensure waterproofness between the casing and the lid member.
Innovation Solution
The accommodation box incorporates a packing member that contacts the main body surface along the attachment direction of the cover portion, and a press portion on the cover portion that presses the main body portion toward the packing member, facilitating smooth attachment without requiring strong force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the packing is fitted between the casing and the lid member to ensure waterproofness, then the waterproofness is improved, but the attachment of the lid member to the casing becomes difficult
Solution Approach 1:
The packing member is configured to contact the side surface of the lid member that is formed along the attachment direction, rather than the conventional end surface contact. This dimensional change in the contact surface allows the packing to effectively seal the gap between the casing and lid member while reducing the attachment force required, as the side surface contact provides better guidance and distribution of attachment forces.
2Reliability
If strong force is applied to press the lid member against the casing for high waterproofness, then the waterproofness is improved, but the attachment work cannot be smoothly performed
Solution Approach 1:
The packing member is positioned and configured to contact specifically the side surface of the lid member along the attachment direction, creating a localized quality improvement in that region. This localized contact arrangement ensures effective waterproof sealing at the critical interface while reducing the overall attachment force required, as the force is more efficiently distributed at the contact point.
Data Source
AI summary
An accommodation box includes a main body portion that is able to accommodate an electronic component thereinside, and has an opening portion formed to connect an inside and an outside, a cover portion to be attached to the main body portion by covering the opening portion, and a packing member that is provided on the cover portion, arranged between the main body portion and the cover portion, and performs water stop between the main body portion and the cover portion, and the packing member is configured to perform water stop with being in contact with a side surface of a side wall of the main body portion formed along an attachment direction of the cover portion.