Compact Igniter With Two-Part Housing for Faster Assembly
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Solution Overview
Problem
Conventional igniters for subterranean tools are difficult and time-consuming to assemble.
Innovation Solution
A two-part housing design with a clamshell configuration allows for easy assembly of an electrical circuit with a heating element and combustible material, featuring a partition that divides the interior into electrical and combustion chambers, and a ground pathway for the ignition circuit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional igniter design is used, then reliable ignition function is achieved, but assembly process becomes difficult and time-consuming
Solution Approach 1:
The housing is divided into two separable parts that can be easily assembled together, allowing the igniter components to be pre-assembled and then quickly closed into the final housing. This segmentation enables simplified manufacturing and assembly processes while maintaining the complete igniter function.
Solution Approach 2:
The electrical circuit components (heating element, leads, power contact) are pre-assembled and positioned within the housing before final closure. This preliminary assembly allows for quick completion of the igniter by simply closing the housing parts together, significantly reducing total assembly time.
2Productivity
If two-part housing with partition is used, then assembly speed increases, but device structural complexity increases
Solution Approach 1:
The housing is segmented into two parts with a partition that creates distinct electrical connection and combustion chambers. This segmentation, while increasing structural complexity, enables modular assembly and clear functional separation, allowing for faster assembly through standardized interfaces.
Solution Approach 2:
The partition structure serves multiple functions: it divides the housing into functional chambers, provides a mounting surface for electrical components, and creates sealed pathways for leads. This multi-functionality reduces the need for additional separate components, offsetting the complexity increase.
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
Facilitates quick and efficient assembly of the igniter, ensuring proper electrical connections and reliable ignition of combustible materials.
Implementation Method 1
an electrical circuit with a resistor to apply heat to the combustible material
Implementation Method 2
The igniter contains a small quantity of combustible material, such as black powder, and an electrical circuit with a resistor to apply heat to the combustible material
Data Source
AI summary
An igniter is described herein. The igniter comprises a housing having a first part with a circuit guide and a second part that fits together with the first part to form the housing, the first part and the second part defining an interior of the housing, with the circuit guide located in the interior of the housing; an ignition circuit having a heating element disposed within the interior of the housing, a first lead, and a second lead, the first lead and the second lead extending outside the housing; a power contact electrically connected to the first lead through a power opening in the housing; and a ground member disposed around the housing in electrical contact with the second lead.