Closed Reflex Sight Mounting With Oblong Dovetail Recoil Lock
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Solution Overview
Problem
Existing sight mounting systems for firearms, particularly on smaller arms like pistols, face challenges due to geometric variations and environmental stresses, leading to misalignment, movement, and increased costs from manual finishing and precision-demanding solutions, which are not suitable for closed reflex sights and often result in undesirable shot grouping.
Innovation Solution
A sight mounting system utilizing an oblong dovetail member and a sight mounting interface with angled walls and grooves, allowing for a clamping joint without additional machining, which securely attaches closed reflex sights to firearms, absorbing recoil and reciprocation forces while minimizing play.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If manual finishing is used to reduce gaps and improve fit between sight and mount, then manufacturing precision is improved, but production time and cost increase
Solution Approach 1:
The mounting interface is pre-designed with geometric features (leaning walls, grooves, tenons) that automatically compensate for manufacturing variations during assembly, eliminating the need for post-manufacturing finishing operations to achieve proper fit and alignment
2Strength
If screw joints with guide pins are used to mount sights, then mounting strength is improved, but the solution becomes expensive and precision-demanding, leading to movement under recoil
Solution Approach 1:
The mounting interface uses asymmetric leaning walls at specific angles that create a self-aligning clamping joint, where the geometry itself provides the precision alignment without requiring high-precision manufacturing or complex adjustment procedures
Solution Approach 2:
The oblong dovetail member acts as an intermediary element between the sight and mounting interface, using its tapered geometry to transmit and distribute recoil forces while maintaining alignment, thereby reducing the precision requirements of the overall system
3Adaptability or versatility
If closed reflex sights are mounted using traditional screw methods, then mounting is possible, but the screws cannot be mounted from above as they would have to go through the sealing walls
Solution Approach 1:
The mounting interface provides access to mounting holes from the side dimension rather than requiring access from above through the sealing walls, allowing screws to be mounted laterally through openings in the side wall of the mounting interface
4Strength
If high rails like Weaver or Picatinny are used, then robust mounting is achieved, but the center of sight is not over the center of bore and high mount distance reduces accuracy
Solution Approach 1:
The mounting interface provides localized adjustment capabilities through its geometric features that allow the sight to be positioned at the correct height and alignment relative to the bore, while maintaining robust mounting through the clamping joint mechanism
Data Source
AI summary
A sight mounting system (300; 400) for mounting an optical sight (200; 500) to a firearm, comprising: a sight mounting interface (110; 410), and an oblong dovetail member (305), wherein the oblong dovetail member (305) is arranged to be forced in close contact with a leaning back wall (125) of the sight mounting interface (110) and a leaning rear face (240; 540) of the optical sight (200; 500), wherein the leaning front face (245; 545) of the reflex sight is forced against the leaning front wall (135) of the sight mounting interface (110). An optical sight (200) for mounting to a sight mounting interface (110; 410), and an adapter plate for mounting a sight to a sight mounting interface