Bolt Stop Buffer Device for Gun Impact Absorption
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Solution Overview
Problem
Bolt stops in guns are prone to metal fatigue and damage due to repeated strong impacts from the bolt member, with existing solutions failing to provide effective damage prevention measures.
Innovation Solution
A bolt stop buffer device with engagement means and buffer means to absorb and buffer the impact force applied to the bolt stop, incorporating an elastic member and a link mechanism for bullet absence detection to disengage the bolt stop when the magazine is replaced, ensuring the bolt stop is protected from repeated impacts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the bolt stop is designed to stop the bolt member firmly, then the stopping function is improved, but the bolt stop is prone to metal fatigue and damage due to repeated strong impacts
Solution Approach 1:
The invention introduces a buffer member positioned between the bolt stop and the bolt member to absorb impact forces before they reach the bolt stop. This beforehand cushioning prevents metal fatigue and damage to the bolt stop while maintaining its stopping function, directly resolving the technical contradiction between reliable stopping and durability.
Solution Approach 2:
The buffer member acts as an intermediary element between the bolt stop and the bolt member. It mediates the interaction by absorbing and reducing impact forces during the stopping process, thereby protecting the bolt stop from repeated strong impacts while ensuring the stopping function remains effective.
2Device complexity
If the bolt stop structure is simplified, then the device complexity is reduced, but no effective damage prevention measures are provided
Solution Approach 1:
The invention segments the bolt stop system into distinct functional components: the bolt stop itself, the buffer member, and the engagement means. This segmentation allows the bolt stop to maintain its simple structure while the added buffer member provides the necessary damage prevention, resolving the contradiction between simplicity and reliability.
3Measurement precision
If the bolt stop engages firmly with the bolt member, then the bullet absence detection is improved, but the impact force on the bolt stop increases causing metal fatigue
Solution Approach 1:
The buffer member provides beforehand cushioning by absorbing impact forces during engagement between the bolt stop and bolt member. This allows the engagement means to maintain firm contact for accurate bullet absence detection while the buffer member reduces the harmful impact forces that would otherwise cause metal fatigue.
Solution Approach 2:
The buffer member serves as an intermediary that enables firm engagement for detection purposes while simultaneously reducing the transmission of impact forces to the bolt stop, thus resolving the contradiction between detection precision and impact reduction.
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 buffer device effectively absorbs and buffers the impact of the bolt member, enhancing the durability of the bolt stop and maintaining the functionality of bullet absence detection and magazine reloading, thereby preventing damage and ensuring reliable operation.
Implementation Method 1
the bolt stop has engagement means for engaging with the bolt member which moves forward to reach the engagement means after last bullet shooting, and includes buffer means for buffering an impact force applied to the bolt stop due to the engagement so as to act on the bolt stop
Data Source
Figure 1
Figure 2A~2B
Figure 3A~3B
AI summary
[Task] There is provided a gun which is unlikely to be damaged and which ensures improved durability by buffering impacts of a bolt member, even if the impacts are repeatedly applied to a bolt stop. [Means for Resolution] The gun includes a bolt member that is disposed in a gun body so as to be movable forward and rearward, that moves rearward in response to gas pressure generated by bullet shooting so as to compress a bolt spring, and that moves forward in response to release of the compressed pressure so as to perform a bullet loading operation, and a bolt stop that stops forward movement of the bolt member. A bolt stop 31 has engagement means 36 for engaging with the bolt member which moves forward to reach the engagement means 36 after last bullet shooting, and includes buffer means 40 for buffering an impact force applied to the bolt stop due to the engagement so as to act on the bolt stop.