Quick-Plug Lamp Junction Box for Low-Cost Safety Isolation

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Solution Overview

Problem

Split lamps on the market are costly due to the need for switch isolation circuit solutions to meet safety regulations, which hinders cost reduction and installation convenience.

Innovation Solution

A lamp design featuring a junction box and lamp body with quick plugging capabilities, utilizing a linear non-isolated circuit and integrating the light source and drive plate, along with innovative connection mechanisms for the male and female ends, eliminating the need for screws and reducing the size of the junction box.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If switch isolation circuit solution is used to meet safety regulations, then safety compliance is improved, but production cost increases

Engineering Contradiction:
Improvesafety complianceVSAvoidproduction cost
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The patent replaces the traditional switch isolation circuit solution with a mechanical isolation structure. The junction box and lamp body are physically separated and connected through a plug connection structure, achieving safety isolation through mechanical means rather than complex electrical isolation circuits. This substitution eliminates the need for expensive isolation components while maintaining safety compliance.

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

Solution Approach 2:

The lamp is divided into two independent parts: a junction box and a lamp body. The junction box contains the power input and drive circuitry, while the lamp body contains the light source. This segmentation allows for simple electrical connection through plugs and sockets, replacing the need for complex isolation circuits and reducing overall production cost.

Inventive Principle:
Principle #1Segmentation

2Ease of operation

If pluggable DC male and female wires are used for connection, then installation convenience is improved, but device complexity increases

Engineering Contradiction:
Improveinstallation convenienceVSAvoidconnection structure complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The patent merges the electrical connection function with the mechanical connection function into a single plug connection structure. The male and female plugs not only establish electrical contact but also provide mechanical positioning and locking. This integration eliminates the need for separate wiring harnesses and connection mechanisms, simplifying the overall structure while maintaining installation convenience.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The plug connection structure serves multiple functions simultaneously: electrical connection, mechanical coupling, positioning alignment, and secure locking. This multi-functionality reduces the number of separate components needed and simplifies the installation process without compromising connection reliability.

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

3Strength

If traditional screw connection is used for securing components, then connection strength is improved, but installation time increases

Engineering Contradiction:
Improveconnection strengthVSAvoidinstallation time
Core Design Contradiction:
StrengthVSLoss of time

Solution Approach 1:

The patent replaces the traditional screw connection mechanism with a snap-fit plug connection structure. The male plug inserts into the female socket and is secured through elastic retention mechanisms, eliminating the need for threading and tightening operations. This mechanical substitution maintains connection strength while dramatically reducing installation time.

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

Solution Approach 2:

The plug connection structure incorporates self-aligning and self-locking features. The elastic sheet and retaining structures automatically engage when the plug is inserted, providing secure connection without requiring manual intervention for tightening or securing. This self-service mechanism eliminates the time-consuming screw tightening process while ensuring strong connections.

Inventive Principle:
Principle #25Self-service

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 design achieves lower production costs, meets safety regulations, and enhances installation convenience through quick and secure connections without the need for screws, while maintaining a compact form factor.

Implementation Method 1

two symmetrically provided installation springs are connected to the rear cover; a connecting elastic sheet is connected to an upper surface of the rear cover

Methodology Applied
Scientific EffectElasticity: Elasticity

Implementation Method 2

a connecting male end corresponding to the connecting female end is installed inside the junction box

Methodology Applied
Scientific EffectElectrical Conduction: Conduction (electrical)

Data Source

PatentUS20250314361A1Lamp installed by quick plugging and implementation method thereof
Publication Date: 2025.10.09 HENGDIAN GRP TOSPO LIGHTING
  • US20250314361A1 patent drawing
  • US20250314361A1 patent drawing
  • US20250314361A1 patent drawing

AI summary

A lamp installed by quick plugging is disclosed, including a junction box and a lamp body, where the lamp body includes a rear cover, and two symmetrically provided installation springs are connected to the rear cover; a drive plate is provided inside the rear cover; a connecting female end is connected to the drive plate, and the connecting female end is electrically connected to the drive plate; a light source plate is also provided inside the rear cover, and a face ring is connected below the rear cover; a connecting male end corresponding to the connecting female end is installed inside the junction box; a connecting elastic sheet is connected to an upper surface of the rear cover, and connecting flanges are provided inside the junction box. An implementation method of the lamp installed by quick plugging is also disclosed. The quick connection between the drive plate and a power input is realized by matching the pluggable connecting female end and connecting male end, and the connecting female end and the connecting male end are both located in the junction box after connection so that a circuit solution of the lamp may adopt a linear non-isolated circuit, thereby reducing the circuit cost and also meeting the requirements of safety regulations.