Portable Gas Tool Ignition Button Handle Grip Integration
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Solution Overview
Problem
Portable gas tools with piezoelectric ignition systems are uncomfortable to use due to the distance of the ignition button from the handle grip, and have complex and costly assembly processes, as well as aesthetic issues with additional head houses and supporting structures.
Innovation Solution
A portable gas tool design where the ignition button and spark plug are integrated directly into the handle grip, with an electric cable extending from the grip to the burner, eliminating the need for external head houses and supporting structures, allowing for easy ignition without excessive resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the ignition button is placed in proximity of the burner, then the piezoelectric system can ignite the gas effectively, but the tool becomes uncomfortable to use due to the distance of the button from the handle grip
Solution Approach 1:
The tool is divided into functional segments: the ignition system (button and spark plug) is separated from the burner assembly and integrated into the handle grip, while the electric cable connects these separated components through the tube. This segmentation allows the button to be positioned for ergonomic operation while the spark plug remains positioned for effective ignition.
2Reliability
If a head house is added to house the ignition device, then the ignition system is protected and functional, but the assembling and disassembling operations become laborious and costly
Solution Approach 1:
The ignition system components (button, spark plug, electric cable) are merged directly with the handle grip and tube structure, eliminating the need for a separate head house. The electric cable serves as both the electrical connection and a structural element that routes through the tube, combining multiple functions into fewer components.
3Ease of operation
If a stick with slider is added to connect the button to the spark plug, then the igniting command can be placed proximal to the handle grip, but the production and assembly cost increases due to additional head houses
Solution Approach 1:
The electric cable extracts the connection function from the mechanical stick-slider assembly. Instead of using a mechanical linkage (stick with slider) that requires guiding structures, the electrical connection is achieved through a flexible cable that routes through the tube, eliminating the need for additional guiding head houses.
4Ease of operation
If a stick surmounts the blowpipe to connect the button and spark plug, then the igniting command is accessible, but the tool is not well appreciated from an aesthetic point of view
Solution Approach 1:
The electric cable is nested within the tube structure, with the cable routing through the hollow interior of the tube rather than surmounting it. This nesting conceals the cable within the existing tube geometry, maintaining the clean aesthetic appearance of the blowpipe while still providing the necessary electrical connection.
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 provides a comfortable, cost-effective, and aesthetically pleasing tool for burning weeds, incinerating insects, and defrosting pipes, with simplified assembly and reduced production costs, while maintaining ease of use and efficient ignition.
Implementation Method 1
those using a piezoelectric system to ignite the gas are known
Data Source
Figure 1
Figure 2~3
Figure 4~6
AI summary
The invention concerns a portable gas tool comprising: a tube (2) for the passage of gas, a tap (3) adapted to be combined with a gas supply from a first side and with the tube (2) from a second side, to supply an inflammable gas inside the tube (2), a handle grip (4) combined with a first end portion (5) of the tube (2), a burner (6) combined with a second end portion (7) of the tube (2), and a piezoelectric system comprising an ignition button (8), a spark plug (9) and an electric cable (10) with a first end (11) combined with the spark plug (9), wherein the ignition button (8) and the spark plug (9) are placed at the handle grip (4), and wherein the electric cable (10) has a length inside the tube (13) substantially extending from the handle grip (4) to the burner (6).