Waterproof Camera Case Structure with Snap-Fit Locking Mechanism
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Solution Overview
Problem
Surveillance cameras used outdoors face reduced service life due to environmental factors like moisture and sunlight, and traditional waterproofing methods are inefficient, requiring strong connections that increase assembly time and are prone to failure under external compression.
Innovation Solution
A case structure with a detachable cover and seal system, featuring support arms and blocks that rotate to secure the cover, allowing for a waterproof seal without the need for strong connections, enabling rapid assembly and disassembly while maintaining a satisfactory waterproof effect.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If screw threads and fastening equipments are used to tightly connect the cover and the case, then the waterproof effect is improved, but the assembly time is increased
Solution Approach 1:
The patent extracts the fastening function from traditional screw threads and fastening equipments, replacing them with a snap-fit mechanism using protrusions and recesses. This allows the cover to be quickly connected to the case body without complex fastening components, significantly reducing assembly time while maintaining waterproof integrity through the seal ring.
Solution Approach 2:
The patent replaces the mechanical screw-thread fastening system with a simpler elastic snap-fit mechanism. The elastic element provides the necessary holding force to maintain the cover's connection to the case body, eliminating the need for threads and fastening equipments while achieving both quick assembly and reliable waterproofing.
2Reliability
If the connection strength between the case and the cover is increased, then the waterproof effect is improved, but the seal is vulnerable to external compression and service life decreases
Solution Approach 1:
The patent applies local quality by concentrating the waterproof function specifically at the sealing interface between the cover and case body. The elastic seal ring is positioned precisely at this critical location, providing localized waterproof protection without requiring the entire connection structure to be overly strong, thereby reducing stress on the seal and extending its service life.
Solution Approach 2:
The elastic element in the snap-fit mechanism provides beforehand cushioning by absorbing external compression forces before they can damage the seal. The elasticity of the element allows it to deform under compression and then return to its original shape, protecting the seal ring from damage and maintaining the waterproof integrity over extended periods.
Data Source
AI summary
A case structure includes a main body, a cover and a seal. The main body has an accommodating space and an inner wall surface forming the accommodating space. The accommodating space has an opening. The main body includes at least two first fastening portions. The cover is assembled to the main body in a detachable way. The cover has a connection position and a lock position relative to the main body. The cover has an annular side wall surface and at least two second fastening portions. The seal is disposed around the annular side wall surface of the cover. One of each first fastening portion and each second fastening portion has a release section and a fastening section connected to each other. The other of each first fastening portion and each second fastening portion has a support arm and a block extended from the support arm.