Pin-Type LED Lamp Holder Waterproofing and Safety Design

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Solution Overview

Problem

Conventional pin-type LED lamp holders are complex and costly due to ultrasonic sealing, and they lack waterproofing and electrical safety features, making them prone to water ingress and electric shock risks.

Innovation Solution

A pin-type LED lamp holder design featuring identical fixing tubes with double-wire lugs and injection-molded components with screw threads, along with a manufacturing method that includes injection molding and assembly of lead wires within a mold, providing a waterproof and electrically safe solution.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If ultrasonic sealing is used to fix the lamp holder, then the fixing strength is improved, but the manufacturing complexity and cost increase

Engineering Contradiction:
Improvefixing strengthVSAvoidmanufacturing complexity
Core Design Contradiction:
StrengthVSDevice complexity

Solution Approach 1:

The patent combines the fixing function and sealing function into a single integrated structure. The lamp holder uses a unified component design where the fixing mechanism and waterproof sealing are achieved through the same structural elements, eliminating the need for separate ultrasonic sealing processes and reducing manufacturing complexity while maintaining fixing strength.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The patent replaces the ultrasonic sealing process with a mechanical sealing structure. Instead of using ultrasonic vibration to create seals, the design employs mechanical features such as interference fits, snap-fit connections, and integrated gasket structures that achieve both fixing and sealing through mechanical means, thereby simplifying the manufacturing process.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Device complexity

If traditional screw fixing is used, then the manufacturing complexity is reduced, but the waterproofing performance deteriorates

Engineering Contradiction:
Improvemanufacturing complexityVSAvoidwaterproofing performance
Core Design Contradiction:
Device complexityVSObject-affected harmful factors

Solution Approach 1:

The patent merges the fixing and sealing functions into a single integrated mechanism. The lamp holder design uses a unified structure where the same components that provide mechanical fixing also create the waterproof seal, eliminating gaps and crevices where water could penetrate while maintaining manufacturing simplicity.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The patent incorporates flexible sealing elements such as rubber gaskets or elastomeric rings within the lamp holder structure. These flexible components conform to mating surfaces and create effective waterproof seals while allowing for simple assembly and disassembly, achieving both waterproofing and ease of manufacture.

Inventive Principle:
Principle #30Flexible shells and thin films

3Device complexity

If the lamp holder is exposed at the pin connection area, then the assembly is simplified, but the electrical safety deteriorates due to electric shock risk

Engineering Contradiction:
Improveassembly simplicityVSAvoidelectric shock risk
Core Design Contradiction:
Device complexityVSObject-generated harmful factors

Solution Approach 1:

The patent uses a nested structure where an inner insulating component is placed within the outer lamp holder body. The insulating element is nested inside the exposed area near the pin connection, providing electrical isolation without adding external complexity to the assembly process.

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

The patent introduces an insulating material or insulating component as an intermediary between the conductive parts and the exposed external environment. This insulating mediator prevents direct contact with conductive elements while maintaining the simplicity of the overall assembly structure.

Inventive Principle:
Principle #24Intermediary (Mediator)

4Ease of manufacture

If conventional lamp holder design is used, then the manufacturing cost is reduced, but the waterproofing and safety features are insufficient

Engineering Contradiction:
Improvemanufacturing costVSAvoidwaterproofing and safety
Core Design Contradiction:
Ease of manufactureVSReliability

Solution Approach 1:

The patent combines multiple functions (fixing, sealing, and safety protection) into a single integrated lamp holder design. By merging these functions into one component rather than using separate parts, the manufacturing cost is reduced while achieving improved waterproofing and electrical safety performance simultaneously.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The patent designs the lamp holder as a multi-functional component that performs fixing, sealing, and electrical insulation functions all in one structure. This universal design approach eliminates the need for multiple separate components, reducing manufacturing complexity and cost while enhancing overall reliability and safety.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentUS11658447B2Pin-type LED lamp holder and manufacturing method of the same
Publication Date: 2023.05.23 JIANGMEN CITY SHENGDA LIGHTING CO LTD
  • US11658447B2 patent drawing
  • US11658447B2 patent drawing
  • US11658447B2 patent drawing

AI summary

The present disclosure provides a pin-type LED lamp holder including: a connector, a first lead wire, a second lead wire, a first fixing tube and a second fixing tube, the connector provided with a first hole and a second hole through the entire connector, the first fixing tube and the first lead wire fixedly connected and plugged into the first hole, and the second fixing tube and the second lead wire fixedly connected and plugged into the second hole. In this way, the first fixing tube and the second fixing tube can be wrapped by the connector and insulated well, thereby a risk of electric shock is prevented.