Removable Metal Rail Inserts for Pistol Frame Assembly
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing pistol frame rail systems are limited in user-finishability and assembly, as they often require complex metal overmolding within polymer frames, which can be difficult for users to manage effectively.
Innovation Solution
The design incorporates removable rear rail inserts made of metal, such as steel, with specific upper and lower portions and pin apertures, allowing users to easily assemble and finish the pistol frame by aligning and securing these inserts within recesses, enabling the extension of rails above the upper rim for slide engagement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If metal overmolding is used within polymer frames to create rails, then the rail system provides structural integration, but the assembly process becomes complex and difficult for users to manage
Solution Approach 1:
The rail system is divided into separate modular components: a polymer frame with recesses and removable metal rail inserts. Each rail insert is a discrete component that can be independently handled, assembled, and removed. This segmentation transforms the complex overmolding process into simple insert installation, making the system user-friendly while maintaining structural integrity through the recess-insert interface.
2Stability of the object's composition
If complex metal overmolding is used to create integrated rails, then structural integration is achieved, but user-finishability and ease of assembly deteriorate
Solution Approach 1:
The metal rail components are extracted from the polymer frame structure as separate removable inserts rather than being permanently overmolded. The frame includes recesses designed to receive these extracted rail components, allowing users to easily install, remove, and replace rails without complex manufacturing processes. This extraction maintains structural integration during use while dramatically improving user-finishability.
3Ease of operation
If removable metal rail inserts are used instead of overmolded rails, then ease of assembly and user control are improved, but manufacturing complexity may increase
Solution Approach 1:
The frame is manufactured with pre-formed recesses that precisely accommodate the rail inserts. These recesses are created during frame manufacturing, preparing the structure in advance to receive the separate rail components. This preliminary preparation eliminates the need for complex post-assembly operations, allowing users to simply install the inserts into the pre-configured recesses, thereby improving ease of assembly without significantly increasing overall manufacturing complexity.
Data Source
AI summary
A pistol frame can include a trigger mechanism recess, an upper rim extending about the trigger mechanism recess, a rear insert recess within the trigger mechanism recess, a left rear rail insert, and a right rear rail insert. The left rear rail insert can include an upper portion including a left rail and a lower portion including a first pin aperture. The right rear rail insert can include an upper portion including a right rail and a lower portion including a second pin aperture. The pistol frame can include a first and second pin hole aligned with the trigger mechanism recess and a pin that can extend through the first and second pin holes and through the first and second pin apertures.