Waterproof Electronic Candle With Annular Sealing Against Rainwater

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Solution Overview

Problem

Existing electronic candles lack a sealing structure, allowing rainwater to enter the candle tube and cause circuit shorting or corrosion of electronic components when used outdoors.

Innovation Solution

A waterproof electronic candle design featuring a housing assembly with a candle tube and cover, utilizing an annular recess and protrusion with a sealing member to prevent rainwater ingress, combined with drainage grooves and pipes to manage water, and a waterproof pad to seal the PCBA handle, ensuring a sealed connection and enhanced drainage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Shape

If a cover is sleeved over the candle tube to improve aesthetic appearance, then the appearance quality is improved, but rainwater can enter the gap between the cover and candle tube causing circuit shorting or corrosion

Engineering Contradiction:

Improveaesthetic appearanceVSAvoidprotection against rainwater ingress

Core Design Contradiction:

ShapeVSReliability

Solution Approach 1:

A sealing member in the form of a flexible ring structure is introduced between the cover and candle tube. This elastic sealing member can deform to fit the gap irregularities while maintaining continuous contact, creating an effective waterproof barrier that preserves both appearance and reliability

Inventive Principle:

Principle #30Flexible shells and thin films

Solution Approach 2:

The sealing member acts as an intermediary element between the cover and candle tube. It fills the gap that would otherwise allow water ingress, mediating the connection between these two components to achieve both aesthetic appearance and waterproof protection

Inventive Principle:

Principle #24Intermediary (Mediator)

2Device complexity

If the electronic candle is designed with a simple structure without sealing components, then the device complexity is reduced, but the waterproof performance deteriorates

Engineering Contradiction:

Improvestructural simplicityVSAvoidwaterproof performance

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The sealing member is designed as a simple ring-shaped flexible element that can be easily installed between the cover and candle tube. This minimalistic approach provides effective waterproof protection without significantly increasing device complexity

Inventive Principle:

Principle #30Flexible shells and thin films

Solution Approach 2:

The sealing member is designed as a simple, inexpensive component that can be easily replaced if needed. Its straightforward design allows for cost-effective manufacturing and maintenance while providing reliable waterproof protection

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

Data Source

PatentUS20250305670A1Waterproof electronic candle

Publication Date: 2025.10.02 DONGGUAN SHUIQUANZI IND CO LTD

AI summary

A waterproof electronic candle includes a housing assembly and a cover, the housing assembly includes a candle tube, the candle tube includes a first end and a second end arranged below the first end; the cover sleeved over the candle tube, an annular recess is defined in one of the candle tube and the cover at the first end, and an annular protrusion is arranged on the other one of the candle tube and the cover at the first end; the housing assembly further includes a sealing member received in the annular recess, the annular protrusion contacts the sealing member to sealingly connect the candle tube with the cover.