Electric Ignition Firework with Bridging Connector

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Solution Overview

Problem

Conventional combination fireworks using ignition cords face issues with misfires and flammability, especially in rainy conditions, and require trained personnel for operation, making them hazardous and unsuitable for end-users.

Innovation Solution

A combination firework design that electrically ignites individual pyrotechnic objects using a base plate with permanently attached electrical ignition cables and a microcontroller-controlled ignition device, featuring a serial plug connector to prevent electrostatic charging and allow for remote control ignition.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If ignition cords are used to ignite pyrotechnic objects in a predetermined order, then the pyrotechnic objects can be ignited in a fixed sequence, but the risk of misfires increases and flammability deteriorates in rainy weather

Engineering Contradiction:

Improveignition reliabilityVSAvoidmisfire risk

Core Design Contradiction:

Stability of the object's compositionVSReliability

Solution Approach 1:

The patent replaces the mechanical ignition system (ignition cords that burn sequentially) with an electrical ignition system. Electric ignition cables with plug connectors are used to deliver electrical impulses to ignite pyrotechnic objects, eliminating the combustion-based ignition cord system that is prone to misfires and weather-related failures.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent changes the ignition mechanism from chemical combustion (ignition cords) to electrical conduction (electric ignition cables). This parameter change in the ignition method provides more reliable and consistent ignition performance, especially in rainy conditions where burning cords may fail.

Inventive Principle:

Principle #35Parameter changes

2Reliability

If electric igniters are used to ignite pyrotechnic objects, then reliable ignition is achieved, but electrostatic charging of cables may cause unintentional ignition

Engineering Contradiction:

Improveignition reliabilityVSAvoidelectrostatic charging

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent introduces plug connectors as intermediary components between the power supply and the pyrotechnic objects. These connectors include bridging devices that can short-circuit the electric ignition cables when not in use, providing a safe discharge path for electrostatic charge and preventing accidental ignition while maintaining reliable electrical ignition capability when needed.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Reliability

If trained personnel operate pyrotechnic launching devices, then proper insertion and launch are ensured, but the device becomes unsuitable for end users

Engineering Contradiction:

Improvelaunch accuracyVSAvoiduser accessibility

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The patent designs the system so that the pyrotechnic objects are pre-assembled with integrated electric ignition cables and plug connectors. End users simply need to connect the assembled objects to the power supply unit, eliminating the need for trained personnel to perform complex insertion and wiring operations while maintaining reliable ignition and launch performance.

Inventive Principle:

Principle #25Self-service

4Adaptability or versatility

If ignition cords are used in combination fireworks, then multiple pyrotechnic objects can be ignited in sequence, but the flammability increases in rainy conditions

Engineering Contradiction:

Improvemulti-object ignition capabilityVSAvoidflammability in rain

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The patent replaces the combustible ignition cord system with an electrical ignition system using non-combustible electric cables. This substitution eliminates the flammability issue in rainy conditions while preserving the capability to ignite multiple pyrotechnic objects in a predetermined sequence through controlled electrical signaling.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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 reliable and safe ignition of pyrotechnic objects, reducing the risk of misfires and flammability issues, while enabling user-friendly operation through remote control, ensuring consistent performance regardless of weather conditions.

Implementation Method 1

In order to prevent electrostatic charging of the electric ignition cables and thus unintentional ignition, they are short-circuited

Methodology Applied

Scientific EffectElectrostatic discharge: Electrostatic Discharge

Implementation Method 2

An electrical voltage is applied to both wires and the resulting current flow or the heat generated causes the incendiary agent to ignite

Methodology Applied

Scientific EffectJoule heating: Joule Heating

Data Source

PatentEP3396299B1Combination firework for electrical ignition of single pyrotechnical objects

Publication Date: 2019.10.30 GRAF ROBERT

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AI summary

Combination firework (100) for electrically igniting individual pyrotechnic articles (102), which combination firework (100) comprises a base plate (200) with at least two pyrotechnic articles (102) and a connector (101) for connecting electrical ignition cables (104) of the pyrotechnic articles (102) guided on the base plate (200) between each pyrotechnic article (102) and the connector (101), and wherein the connector (101) is designed to permanently attach an electrical bridging device (300) to it, and wherein the pyrotechnic articles (102) comprise a sealed container (1021) in which an ignition element and a luminous charge are arranged, and wherein the container is fixedly arranged directly on the base plate (200).