Removable Pyrotechnic Igniter Coupling with Elastic Guillotine Lock
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Solution Overview
Problem
Current systems for setting up single-shot fireworks are labor-intensive, pose safety risks due to manual handling and potential electrostatic discharges, and can lead to unpredictable firing sequences and hazardous fragment propagation in case of technical malfunctions.
Innovation Solution
A coupling and power transmission system for electric igniters in single-shot fireworks, featuring a plastic tube with a shaped connector and docking base, allowing for quick, safe, and reliable connection and disconnection of the igniter, independent of angular position, with an elastic guillotine locking mechanism and a printed circuit for short-circuit protection, enabling easy replacement and standard interface compatibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual handling and assembly operations are used for single-shot fireworks, then the fireworks can be installed and operated, but safety risks increase due to potential electrostatic discharges and accidental ignitions
Solution Approach 1:
The system is divided into separate modular components: the firework tube with shaped connector, the docking base with locking mechanism, and the electrical connection system. This segmentation allows each component to be handled and assembled independently, reducing the complexity of manual operations while maintaining safety through controlled coupling and disconnecting procedures.
Solution Approach 2:
The elastic guillotine locking mechanism with elastic fins provides automatic mechanical engagement and electrical connection when the firework tube is inserted into the docking base. The system self-locks and self-connects without requiring manual manipulation of electrical contacts, thereby reducing safety risks associated with electrostatic discharges during assembly.
2Ease of operation
If multiple manual operations are performed during installation and use of single-shot fireworks, then the fireworks can be properly set up, but the work time and operational complexity increase significantly
Solution Approach 1:
The mechanical locking function and electrical connection function are merged into a single integrated docking interface. When the firework tube is inserted into the docking base, both the mechanical engagement (through the shaped connector and elastic fins) and the electrical connection (through the printed circuit board contacts) occur simultaneously in one operation, eliminating the need for separate manual connection steps.
Solution Approach 2:
The printed circuit board is pre-positioned and electrically connected to the docking base before the firework is installed. The electrical contacts are already in place and ready to engage, so when the firework tube is inserted, the electrical connection is automatically established without requiring additional manual wiring or connection operations.
3Reliability
If the firing system is complex with multiple operations and manual manipulations, then the fireworks can be controlled, but the risk of unpredictable firing sequences and hazardous fragment propagation increases
Solution Approach 1:
The complex firing control system is extracted and separated from the individual firework units. The docking base contains the electrical connection and control interface, while the firework tubes are simplified to contain only the pyrotechnic components and shaped connector. This extraction reduces the complexity at the firework level and centralizes the control functions, making the system more predictable and safer.
4Ease of repair
If defective igniters cannot be easily replaced, then the system remains simple, but time is lost and safety risks increase during defect detection and replacement
Solution Approach 1:
The coupling system is designed to be dynamically reversible. The elastic guillotine locking mechanism allows the firework tube to be quickly inserted and locked into the docking base, and just as quickly removed by actuating the release mechanism. This dynamic coupling enables rapid replacement of defective igniters without requiring complex disassembly procedures, maintaining ease of repair while accepting the necessary coupling system complexity.
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
This system reduces manual operations, minimizes risks, ensures safe handling, prevents hazardous fragment propagation, allows for easy replacement of defective igniters, and promotes the use of homogeneous materials, reducing waste and operational complexity.
Implementation Method 1
said housing being open upwards and provided of elastic guillotine locking mechanism, with elastic fins
Implementation Method 2
The igniter is made up of an electrical resistance, which passes through a solid pyrotechnic head formed by a pyrotechnic mixture. The resistance is connected to two electric rheophores. By making electric current flow through the rheophores, the resistance is overheated
Implementation Method 3
The resistance is connected to two electric rheophores. By making electric current flow through the rheophores, the resistance is overheated, and that in turn triggers the pyrotechnic head, which creates a contained deflagration, capable of propagating heat and sparks
Data Source
AI summary
The present invention concerns a coupling and power transmission system for an electric igniter, in particular for single-shot type fireworks (10), the system comprising a casing (11), in which the pyrotechnic components are housed, said casing having a first side that is open and a second side with a shaped connector (12), said shaped connector (12) comprising a channel (15) for connecting to said pyrotechnic components and adapted to removably receive an electric igniter (16), said electric igniter (16) being rigidly coupled to a printed circuit (18) on a PCB support (17), the printed circuit comprising two concentric tracks which are short-circuited via a connection track on a break-away tab (19) of the PCB support (17), whereby removal of the tab (19) eliminates the short-circuit, said shaped connector (12) being couplable, in a removable manner and with freedom of rotation with respect to an axis, to a docking base (13), said docking base (13) comprising the electronic components for transmission of an electrical signal to said electric igniter (16) and in particular three contacts (20), aligned with each other and dimensioned in relation to said printed circuit (18), ensuring connection between the tracks of said printed circuit (18) and the contacts (20) independently of the angular position of said shaped connector (12) with respect to said docking base.