Trajectory Adjustment Structure for Toy Gun Barrel
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Solution Overview
Problem
Conventional hop-up adjustment mechanisms for toy guns are externally mounted, making barrel replacement difficult and prone to inaccurate, rough adjustments that cause gun wobbling during fine trajectory corrections.
Innovation Solution
A trajectory adjustment structure with thread sections mounted inside the gun barrel, allowing for precise hop-up force adjustment through a front-end adjustment assembly that includes a connection tube and transmission sleeve, enabling easy barrel replacement and stable operation by eliminating the need to access the rear end for adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the hop-up adjustment mechanism is mounted outside the gun barrel at the rear end, then the adjustment mechanism can be accessed for trajectory correction, but the gun barrel replacement becomes difficult and requires removing the adjustment mechanism first
Solution Approach 1:
The adjustment assembly is nested inside the gun barrel, with the connection tube inserted through the gun barrel and the adjustment assembly housed within the connection tube. This nested arrangement allows the adjustment mechanism to be integrated within the barrel structure, enabling easy barrel replacement while maintaining adjustment accessibility.
Solution Approach 2:
The adjustment mechanism is divided into separate modular components: the adjustment assembly (with adjustment knob and thread sections), the connection tube, and the transmission sleeve. This segmentation allows the gun barrel to be replaced independently while leaving the adjustment mechanism intact, solving the contradiction between ease of adjustment and ease of barrel replacement.
2Device complexity
If a pin or rotary wheel adjustment means is used, then the adjustment mechanism is simple to construct, but the adjustment precision is poor with significant hop-up force change per step
Solution Approach 1:
A transmission sleeve acts as an intermediary between the adjustment assembly and the press-down member. The transmission sleeve converts the rotational motion of the adjustment knob into precise linear displacement of the press-down member through threaded engagement, achieving fine adjustment precision while maintaining a relatively simple mechanical structure.
Solution Approach 2:
The invention uses threaded engagement with specific pitch parameters to achieve fine adjustment. By changing the thread pitch and number of thread sections, the adjustment precision can be controlled - smaller pitch values provide finer adjustment steps while maintaining mechanical simplicity.
3Ease of operation
If the adjustment operation is conducted at the rear end of the gun barrel, then the hop-up adjustment can be made, but the user must sacrifice one hand from holding the gun causing wobbling and losing fine adjustment significance
Solution Approach 1:
Instead of placing the adjustment mechanism at the rear end of the gun barrel, the invention inverts the arrangement by mounting the adjustment assembly at the front end of the gun barrel. This allows the user to adjust trajectory with one hand while maintaining a stable grip on the gun body with the same hand, eliminating gun wobbling during adjustment.
4Measurement precision
If the connection tube is moved by the adjustment assembly through thread sections, then fine adjustment of hop-up force is achieved, but the structure becomes more complex with multiple engagement components
Solution Approach 1:
The invention merges multiple functions into the adjustment assembly: the adjustment knob provides rotational input, the thread sections provide mechanical advantage and precision, and the connection to the connection tube integrates the adjustment mechanism with the hop-up application point. This consolidation achieves fine adjustment precision while limiting overall structural complexity through functional integration.
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 precise trajectory adjustments without gun wobbling and simplifies barrel replacement by allowing direct, stable operation of the adjustment mechanism at the front end of the gun barrel, improving the precision and ease of hop-up force adjustments.
Implementation Method 1
The adjustment assembly is formed thereon with a plurality of thread sections that are in threading engagement with the gun barrel for a fine adjustment operation of the adjustment assembly
Implementation Method 2
to cause the press-down member to gradually press inwardly of the gun barrel to set an upper side of an inside wall of the gun barrel in a concave configuration that could provide a frictional force to a top of a BB bullet moving through the gun barrel so as to apply a hop-up or lifting force to the BB bullet
Data Source
AI summary
A structure is mounted in a gun barrel and includes an adjustment assembly arranged at a front end of the gun barrel, a connection tube arranged in the gun barrel in abutting engagement with the adjustment assembly to be driven by the adjustment assembly for movement, a plurality of thread sections formed on the adjustment assembly and in threading engagement with the gun barrel for fine adjustment of the adjustment assembly, at least one transmission sleeve arranged at one end of the connection tube that is distant from the adjustment assembly, and a press-down member arranged at one side of the transmission sleeve to be abutted on by the transmission sleeve for pressing inwardly of the gun barrel.