Heat Shrink Gun Trigger Mechanism for Tool-Free Lighter Replacement
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Solution Overview
Problem
Heat-shrink guns often require frequent intervention by a technician to replace a weakening piezoelectric lighter, leading to equipment immobilization and production delays due to lighting difficulties.
Innovation Solution
A hot air device with a body that includes a trigger mechanism allowing tool-free replacement of the piezoelectric lighter, featuring a storage zone for a spare lighter and a pivotable trigger that assumes a loading position to facilitate access for changing the lighter without tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the piezoelectric lighter is used in the heat-shrink gun, then ignition is achieved, but the lighter delivers weaker voltage over time requiring frequent replacement by technicians
Solution Approach 1:
The lighter is designed as a separable component that can be easily removed and replaced by the user without technician intervention. The trigger assembly is segmented to allow access to the lighter through simple manual operations, enabling the user to replace the lighter independently and quickly, thus reducing equipment immobilization time while maintaining reliable ignition function.
2Ease of repair
If technician intervention is required for lighter replacement, then proper replacement is ensured, but equipment immobilization increases and production is delayed
Solution Approach 1:
The device enables self-service lighter replacement by the user through a simplified access mechanism. The trigger can be manually positioned to expose the lighter housing, allowing the user to remove and replace the lighter without requiring technician intervention. This self-service capability maintains ease of repair while eliminating production delays caused by technician availability.
3Ease of operation
If the trigger mechanism is made complex to control lighter replacement, then precise control is achieved, but ease of operation decreases
Solution Approach 1:
Instead of using a complex locking mechanism to secure the lighter, the design uses the natural position of the trigger in different states to control access. The trigger's waiting position naturally covers the lighter housing, while moving it to the loading position automatically exposes the lighter. This inverted approach simplifies the mechanism by using the trigger's operational movement itself as the access control, rather than adding separate locking components.
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
Enables quick and tool-free replacement of the lighter, ensuring continuous operation of the heat-shrink gun by maintaining a spare lighter on the device, reducing downtime and production disruptions.
Implementation Method 1
an ignition voltage of the gaseous mixture is generated by a piezoelectric lighter, under the action of a trigger when it is moved from a waiting position to a lighting position
Data Source
AI summary
A heat-shrink gun in which an ignition voltage of the gaseous mixture is generated by a piezoelectric lighter (12), under the action of a trigger (8) when it is moved from a waiting position (8A) to a lighting position, characterized in that the trigger can also assume a loading position (8B), in which it free access (DC) to a working housing for the lighter.