Rotatable Waterproof Sensing Device Sealing
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Solution Overview
Problem
Conventional sensor-based light fixtures are prone to moisture intrusion, leading to short-circuits and damage due to gaps between components, necessitating costly waterproof treatments.
Innovation Solution
A waterproof sensing device design featuring a rotatable rear cover with a seal ring or adhesive between the lens and the rear cover, along with multi-directional adjustability and a front cover with a sensing opening, utilizing various waterproof materials and technologies like hot-melt technology for effective sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional light fixture structure with gaps between components is used, then device complexity is reduced, but moisture intrusion occurs leading to short-circuits and damage
Solution Approach 1:
The patent combines the waterproofing function with the existing structural components by integrating seal rings into the lens assembly and using the frame as both structural support and waterproof barrier. This merging approach achieves effective waterproofing without adding separate complex waterproofing systems, thus improving reliability while controlling device complexity.
2Reliability
If seal rings and waterproof adhesives are applied to gaps and joints, then moisture intrusion is prevented, but manufacturing cost increases
Solution Approach 1:
The patent applies waterproofing measures selectively at critical locations where moisture intrusion is most likely to occur, such as the joints between the front cover and rear casing, and around the light-output portion. This localized approach ensures adequate waterproof performance while avoiding unnecessary waterproofing treatments that would increase manufacturing costs, thus balancing reliability and ease of manufacture.
3Shape
If lens is screwed to front cover around light-output portion, then light-output portion is covered and defined, but gap between lens and front cover allows moisture penetration
Solution Approach 1:
The patent introduces seal rings as intermediary elements between the lens and the front cover/frame assembly. These seal rings fill the gaps created by the screw-mounted lens configuration, preventing moisture penetration while allowing the light-output portion to remain properly defined. This intermediary solution resolves the contradiction between maintaining the desired shape/structure and preventing moisture intrusion.
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 provides a one-time, cost-effective waterproof treatment that enhances durability and prevents moisture intrusion, ensuring the device functions reliably both indoors and outdoors.
Implementation Method 1
a seal ring or adhesive is provided between the lens and the rear cover
Implementation Method 2
a seal ring or adhesive is provided between the lens and the rear cover
Data Source
AI summary
A waterproof sensing device including a base, a rear cover, a sensing module, and a lens is provided. The rear cover is selectively rotatably disposed on the base, wherein the rear cover has a side wall to enclose an accommodation space. The sensing module is disposed in the accommodation space. The lens covers the rear cover on the edge of the side wall of the rear cover and seals the accommodation space. A waterproof treatment is disposed between the lens and the edge of the side wall, such that moisture is prevented from intruding into the accommodation space to cause damage, no matter where the sensing device is disposed.