Pistol Chassis Anchoring via Formfitting Connection
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Solution Overview
Problem
The existing firearms designs, such as those with plastic bodies and monobloc metal chassis, face issues with mechanical stress distribution and fatigue due to deformations during firing cycles, leading to potential alignment and strength problems.
Innovation Solution
A pistol design featuring a synthetic material body with a channel and a one-piece elongated chassis that includes guiding elements for the slide and trigger mechanism, utilizing a formfitting connection with an inclined translation direction and tongue-and-groove mechanism to distribute stresses effectively, reducing the chassis's exposure to flexion and traction forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a monobloc metal chassis is used to ensure rigidity and alignment, then the alignment between front and rear slide guiderails is improved, but the chassis is subjected to significant flexion and mechanical stresses that cause fatigue cracks
Solution Approach 1:
The chassis is divided into multiple modular components (front chassis part, rear chassis part, middle connection piece) that can be assembled together. This segmentation allows each component to be optimized for its specific function and reduces the overall stress on any single component, preventing fatigue cracks while maintaining alignment precision through the modular connection design.
Solution Approach 2:
Different sections of the chassis are designed with different properties: the front and rear parts are optimized for their specific functions (guide rail mounting, trigger mechanism), while the middle connection piece is specifically designed to handle stress transmission and alignment. This local optimization ensures that each part has the appropriate strength and flexibility for its location, reducing overall fatigue stress.
2Stability of the object's composition
If the chassis returns forces over its entire length, then the structural integrity is maintained, but the unlocking forces cause significant flexion and transmit strong mechanical stresses to the rear part of the chassis
Solution Approach 1:
The connection between the front and rear chassis parts is extracted as a separate, optimized component (the middle connection piece). This allows the connection piece to specifically handle the stress transmission and force distribution, taking the burden of stress management away from the main chassis body and reducing fatigue stress on critical components.
Solution Approach 2:
The middle connection piece acts as an intermediary element between the front and rear chassis parts. It mediates the transmission of forces and stresses, distributing them in a way that protects the main chassis structure from excessive stress while maintaining structural integrity. This intermediary component can be designed with specific stress-dissipating features.
Data Source
AI summary
A pistol is disclosed, including a body made from synthetic material having a channel formed inside the body. A slide is guided in a longitudinal direction of the body, the slide including a barrel and a breech. A single-block chassis having an elongated shape extends from a central portion of the body to a rear end of the body. The chassis further includes guiding elements for guiding the slide. The pistol is configured such that the channel is designed to receive the chassis removably, and the chassis is fastened to the body using a formfitting, sliding connection.