Pistol Slide and Frame Structure for Stiffness and Easy Disassembly
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Solution Overview
Problem
Existing pistol designs lack stiffness and are complicated to disassemble, particularly due to the design of the slide and frame mechanisms.
Innovation Solution
The slide is enhanced with protrusions for increased stiffness and protection against foreign bodies, while the frame incorporates guide elements with elevated surfaces for improved stability and ease of disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the slide and frame design uses conventional structures, then the pistol can be manufactured with standard processes, but the pistol lacks sufficient stiffness
Solution Approach 1:
The slide is segmented into multiple functional zones with protrusions at specific locations (front, rear, sides) that divide the structural reinforcement into discrete elements. This segmentation allows stiffness to be enhanced at critical locations without requiring a complete redesign of the entire slide structure, thus improving strength while controlling complexity.
Solution Approach 2:
Protrusions are added at specific local positions on the slide (front protrusion, rear protrusion, side protrusions) rather than uniformly throughout. This local quality approach reinforces areas where stiffness is most needed for guiding the firing pin and maintaining structural integrity, while avoiding unnecessary complexity in areas where it is not required.
2Ease of operation
If conventional slide and frame structures are used, then manufacturing is simpler, but disassembly is complicated
Solution Approach 1:
The protrusions are pre-configured in specific positions and shapes (including ramp-like shapes) that prepare the slide and frame for easy disassembly. The preliminary positioning of these structural elements creates natural guiding paths and clearance zones that facilitate the disassembly process without requiring complex tools or procedures.
Solution Approach 2:
Instead of using complex locking mechanisms that require sophisticated disassembly tools, the invention inverts the approach by using simple protrusions that naturally guide the disassembly process. The structural elements that provide stiffness also serve as disassembly aids, reversing the conventional wisdom that stiffness requires complex, hard-to-disassemble structures.
3Object-affected harmful factors
If the recess for the firing pin flag is deep and extends fully to the bore, then firing pin guidance is adequate, but foreign bodies can easily ingress into the pistol interior
Solution Approach 1:
The recess is designed with local quality variations: it extends deeply in the radial direction to provide adequate firing pin flag guidance, but is limited in the slide displacement direction by strategically positioned protrusions. This creates a localized deep recess for reliability while preventing foreign body ingress through the protrusion barriers.
Solution Approach 2:
The protrusions act as intermediary elements between the recess and the external environment. They provide the necessary structural guidance for the firing pin flag while serving as protective barriers that prevent foreign bodies from entering the pistol interior through the recess, thus mediating between reliability and protection requirements.
4Strength
If protrusions are added to enhance slide stiffness, then structural strength improves, but manufacturing complexity increases
Solution Approach 1:
Multiple functions are merged into the protrusions: they provide structural reinforcement for stiffness, guide the firing pin flag, prevent foreign body ingress, and facilitate disassembly. By combining these functions into single structural elements rather than adding separate components, manufacturing complexity is minimized while achieving comprehensive performance improvements.
Solution Approach 2:
The protrusions are designed as multi-functional elements that simultaneously achieve stiffness enhancement, firing pin guidance, foreign body protection, and disassembly facilitation. This universality reduces the total number of components and manufacturing steps compared to implementing each function with separate elements, thus improving ease of manufacture despite the added structural features.
Data Source
AI summary
A pistol incudes a slide and a frame. The slide comprises a first slide groove and a second slide groove for coupling the slide to a frame. A bore accommodates a firing pin and a cover plate accommodates a slide cover plate. A recess extends from an internal surface to the bore in a radial direction and from the cover plate groove to a front end of the recess in a slide displacement direction, wherein the recess is configured for accommodate a firing pin flag of firing pin. At least a first protrusion is situated on the internal surface, wherein the first protrusion is situated next to the recess. 10. The frame comprises a frame body and a guide element. The guide element has a first guide rail and a second guide rail and a main body connecting the first guide rail and the second guide rail. The guide rail is accommodated as an insert in the frame body. The guide element is configured to be accommodated in slide grooves of the slide. The main body of the guide element has a main body top surface, the first guide rail has a first top surface and the second guide rail has a second top surface. At least parts of the main body top surface are elevated to at least a level of the first top surface and the second top surface.