Gear Checked Construction for Toy Gun Piston Protection
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Solution Overview
Problem
Existing toy gun designs suffer from breakage due to the driving gear reversing rotation and hitting the tail end of the piston, leading to potential damage and reduced service life.
Innovation Solution
A gear checked construction featuring a check assembly with a hinge, check bar, and elastic cell, which includes a clamping part that engages with the driving gear to prevent reverse rotation damage by stopping the gear's rotation when it attempts to reverse, thereby protecting the toy gun's components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the spring releases its elastic force to drive the piston forward, then the piston moves toward the front and elastic fatigue is prevented, but the driving gear reverses rotation too fast and hits the tail end of the piston causing damage
Solution Approach 1:
The check assembly (comprising check bar, hinge, and elastic cell) is pre-installed in the gun body to provide counter-action against the harmful reverse rotation of the driving gear. When the driving gear attempts to reverse rotate and hit the piston, the check bar engages with the driving gear's clamping part to stop the reverse rotation, preventing damage to the gear and piston while allowing the spring to continue driving the piston forward.
2Reliability
If a check assembly is added to prevent reverse rotation damage, then protection against breakage is provided, but the device complexity increases
Solution Approach 1:
The protection function is segmented into a separate check assembly (check bar, hinge, elastic cell) that operates independently from the main driving mechanism. This modular approach allows the check assembly to be added without fundamentally redesigning the entire gun structure, maintaining relative simplicity while providing effective protection against reverse rotation damage.
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 gear checked construction effectively prevents breakage by stopping the driving gear's reverse rotation, thereby extending the toy gun's service life and ensuring safe operation.
Implementation Method 1
the check assembly further comprises an elastic cell set around the hinge to allow the check bar to reset position in one direction
Data Source
AI summary
A gear checked construction for a toy gun comprises a gun body, a piston, a driving gear, and a check assembly. The piston is mounted inside the gun body and a rack is formed on the bottom of the piston. The driving gear engages with the rack to drive the piston and includes a clamping part. The check assembly comprises a hinge and a check bar. The hinge is mounted inside the gun body and the check bar is set around the hinge and comprises a forward part and a reverse part. The clamping part touches on the forward part and bursts through the check bar when the driving gear rotates in one direction to drive the piston, and the clamping part engages with the reverse part to stop the driving gear's rotation when the driving gear rotates in the other direction.