String Light Sealing Structure for Wire Slot Waterproofing
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Solution Overview
Problem
String lights experience rubber leakage issues with light bulbs, leading to lower yield and potential reliability problems.
Innovation Solution
A string light design featuring a bulb with a holder, a waterproof housing, and a stopper that seals the wire slot, along with a power line connected to the bulb, ensuring electrical connection and enhanced waterproofing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a traditional light bulb structure is used, then the assembly process is simple, but rubber leakage occurs leading to lower yield
Solution Approach 1:
The light bulb structure is divided into separate functional components: a bulb body, a holder with wire slot, a waterproof housing, and a stopper. This segmentation allows each component to be optimized independently - the stopper specifically addresses sealing at the wire slot while the waterproof housing protects against leakage, thereby improving yield without requiring complete structural redesign
Solution Approach 2:
A stopper is introduced as an intermediary component between the bulb and the wire slot to prevent rubber leakage. This intermediate element specifically addresses the leakage problem at the wire slot interface without complicating the overall assembly process, as the stopper is a simple additive component that fits into the existing structure
2Reliability
If rubber sealing is used to prevent leakage, then waterproofing is improved, but rubber leakage still occurs reducing reliability
Solution Approach 1:
The sealing function is extracted from the rubber material alone and assigned to a dedicated stopper component. This stopper is specifically designed to seal the wire slot opening, separating the sealing responsibility from the general waterproofing function and addressing the specific leakage point caused by rubber insufficiently sealing around the wire slot
Solution Approach 2:
The waterproofing system uses composite protection combining the waterproof housing material with the stopper component. The stopper provides primary sealing at the wire slot interface while the waterproof housing provides secondary protection, creating a multi-material defense system that prevents rubber leakage more effectively than rubber alone
3Ease of operation
If the wire slot is left open for power line access, then electrical connection is enabled, but water can penetrate causing leakage
Solution Approach 1:
The stopper is specifically positioned at the wire slot opening to provide localized sealing only where needed. This local quality approach maintains the open wire slot for power line access while applying sealing precisely at the vulnerability point, allowing electrical connection functionality to remain intact while preventing water penetration through the wire slot
Data Source
AI summary
A string light is provided, comprises a bulb, a holder which is provided with a bulb on one side and a wire slot on the other side, a power line which goes through the wire slot and the holder, a waterproof housing which has a cavity that contains the holder and is toward the bulb, and a stopper located in the space between the waterproof housing and the bulb; wherein the power line is electrically connected to the bulb, at least a portion of the waterproof housing is mounted to the holder, and the stopper seals the wire slot.