Firearm Bolt Catch Linkage for One-Handed Reload
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Solution Overview
Problem
Current bolt catch devices in firearms are inaccurate, have insufficient durability, and require both hands to release the bolt catch state, leading to inefficiencies and potential delays in reloading, which can be critical in time-sensitive situations.
Innovation Solution
A bolt catch device connected to the lower housing with a linkage portion and release portion, utilizing pivot shafts and abutting members to enable one-handed operation, allowing the bolt catch to be released and the gun to be reloaded quickly by moving the trigger finger after magazine replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional bolt catch device is used, then the structure is simple, but the operation requires both hands and reduces reloading efficiency
Solution Approach 1:
The patent merges the magazine release function and bolt catch release function into a single integrated mechanism. The trigger finger operation simultaneously controls both the magazine release and bolt catch release, eliminating the need for separate hand operations and thereby improving reloading efficiency
Solution Approach 2:
The release portion is designed to perform multiple functions: it controls both the magazine release and the bolt catch release through a single pivot shaft operation. This multi-functional design allows one hand to complete both reloading actions, directly addressing the productivity improvement goal
2Reliability
If traditional bolt catch device is used, then the manufacturing cost is low, but the durability is insufficient and malfunction occurs easily
Solution Approach 1:
The patent introduces dynamic elements including a pivot shaft that allows rotational movement and an elastic element that provides flexible return force. These dynamic components enable the bolt catch to reliably return to its original position after release, improving durability and preventing malfunction while maintaining reasonable manufacturing complexity
Solution Approach 2:
The elastic element is pre-loaded to automatically return the bolt catch to its original position after release. This preliminary action ensures that the bolt catch is always ready for the next operation, improving reliability without requiring complex additional mechanisms
3Manufacturing precision
If traditional bolt catch device is used, then the structure is simple, but the bolt catch action is inaccurate
Solution Approach 1:
The patent segments the bolt catch mechanism into distinct functional portions: a linkage portion with abutting member for bolt engagement, and a release portion with pin for controlled release. This segmentation allows each component to be optimized for its specific function, improving action accuracy while keeping the overall structure manageable
Solution Approach 2:
The abutting member serves as an intermediary element between the bolt and the release mechanism. It provides a precise contact point that ensures accurate bolt catch action, while the pin acts as an intermediary to transmit the release motion from the trigger finger to the bolt catch, improving precision without excessive complexity
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 rapid one-handed release of the bolt catch state, allowing continuous shooting without the need for a second hand, improving operational efficiency and reducing the risk of delays during reloading.
Implementation Method 1
The linkage portion is connected with the lower casing by a first pivot shaft, and performs a first rotational displacement movement by the first pivot shaft
Implementation Method 2
The abutting member performs the first rotational displacement movement and is located in the moving direction of the bolt, and the bolt abuts against the abutting member
Implementation Method 3
the elastic element is connected between the main body and the lever
Data Source
AI summary
A bolt catch device for firearms, which is connected to a lower housing and includes a linkage portion and a release portion. The linkage portion is connected to the lower housing by a first pivot shaft and has an abutting member. The release portion is connected with the lower housing by a second pivot shaft, and has a pin and a bolt catch. When the user uses the trigger finger to move the bolt catch, the bolt catch performs a rotational displacement movement from a first position with the second pivot shaft as the center, so that the bolt catch is located at the second position. The abutting member performs a rotational displacement movement centered on the first pivot shaft, and the abutting member is away from the bolt, and the bolt moves to complete the feeding of the ammunition.