Volume Adjustable Blow Gun with Integrated Locking Mechanism
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional blow guns experience leakage due to spring fatigue and unintentional trigger activation, limiting their effectiveness in adjusting air volume and safety.
Innovation Solution
A blow gun design featuring a volume adjustment device with a valve rod, spring, rotatable rod, and nut system, allowing for controlled air volume adjustment and preventing accidental trigger activation through a locking mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the spring is connected to different axes of the blow gun with the valve, then the blow gun can function, but the spring reaches fatigue point quickly causing leakage
Solution Approach 1:
The patent merges the spring connection axis with the valve axis, making them coincident rather than separate. This alignment ensures that the spring force acts directly along the valve's sealing direction, improving sealing reliability while distributing stress more evenly to extend spring service life.
2Ease of operation
If the volume adjustable device is exposed on the outside of the blow gun, then the air volume can be adjusted, but the trigger may be unintentionally touched causing dangerous situations
Solution Approach 1:
The patent nests the trigger mechanism inside the handle cavity rather than exposing it externally. The trigger is positioned within the hollow handle structure, making it inaccessible for unintentional activation while still allowing deliberate operation by the user, thus eliminating the safety hazard while preserving adjustability.
3Productivity
If the press rod is operated for a period of time, then the blow gun can be used, but the spring easily reaches its fatigue point
Solution Approach 1:
By merging the spring axis and valve axis into a single coincident line, the patent optimizes the force transmission path. This reduces lateral stresses and bending moments on the spring during continuous operation, thereby extending spring durability while maintaining continuous productivity.
Solution Approach 2:
Instead of having the spring connect to different axes as in conventional designs, the patent inverts the approach by making the axes coincident. This fundamental reversal of the connection geometry reduces mechanical stress accumulation and extends spring life under continuous operation.
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 enhances air volume control, reduces spring fatigue, and ensures safe operation by allowing easy adjustment of air flow with minimal user effort and preventing unintended activation.
Implementation Method 1
a spring (22) which biases the press rod (3)
Implementation Method 2
The blow gun uses pressurized air to generate air flow to remove the dust from the positions mentioned above
Data Source
AI summary
A blow gun includes a body with a top path and a bottom path, and a volume adjustment device is installed between the top and bottom paths. The volume adjustment device is in contact with a press rod which has one end pivotably connected to the body. The opening of the press rod is controlled by operation of the volume adjustment device so as to change the volume of the pressurized air. The press rod can also be locked at a position so that it is not activated unintentionally.