Firearm Rear Sight Pivoting Elevation Adjustment Mechanism
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Solution Overview
Problem
Existing firearm rear sights lack efficient mechanisms for adjusting elevation and drift, leading to suboptimal accuracy and user convenience.
Innovation Solution
A rear sight design featuring a base member and a top member with bearing surfaces that pivot relative to each other, allowing for adjustable elevation and drift adjustments without requiring removal from the firearm, utilizing a dovetail fitting and set screws for secure attachment and adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional rear sight designs are used, then the structure is simple, but the adjustment precision for elevation and drift is insufficient
Solution Approach 1:
The rear sight is divided into two separate unitary members: a base member that attaches to the firearm and a top member that contains the alignment portion. This segmentation allows independent optimization of each component's function while maintaining overall structural simplicity. The base member provides stable mounting with dovetail fitting and set screw retention, while the top member enables precise elevation adjustment through pivoting movement on bearing surfaces.
Solution Approach 2:
The top member is designed to pivot relative to the base member between lowered and raised positions through bearing surfaces, enabling dynamic adjustment of elevation. This dynamic capability allows the sight to be adjusted for different shooting distances and conditions without requiring complete disassembly, thereby improving measurement precision while maintaining relatively simple device structure.
2Reliability
If the rear sight allows elevation adjustment, then the shooting accuracy improves, but the device complexity increases
Solution Approach 1:
The elevation adjustment mechanism utilizes pivoting movement of the top member relative to the base member through bearing surfaces. This simple dynamic mechanism allows the alignment portion to be positioned at different heights relative to the barrel axis, enabling accurate shot placement at various distances without complex adjustment systems.
Solution Approach 2:
The distance between the rear sight alignment portion and the barrel axis is changed by pivoting the top member between lowered and raised positions. This parameter change directly affects the sight's elevation capability, allowing the same basic structure to serve multiple shooting scenarios with improved reliability and accuracy.
3Manufacturing precision
If the rear sight uses a unitary construction for each member, then the manufacturing precision improves, but the adaptability for different adjustment needs decreases
Solution Approach 1:
The sight is segmented into two unitary members (base member and top member) that can be manufactured separately with high precision using identical materials and processes. This ensures consistent quality and manufacturing precision for each component while still allowing functional versatility through their relative movement capability.
Solution Approach 2:
Despite each member being of unitary construction for manufacturing precision, the combination of base member and top member creates an adaptable system. The top member can pivot relative to the base member, providing elevation adjustment versatility while maintaining the manufacturing advantages of unitary construction for each individual component.
Data Source
AI summary
A rear sight comprises a base member and a top member. The base member comprises a fitting portion and a base member bearing surface. The fitting portion of the base member is attachable to a firearm. The top member comprises a rear sight alignment portion and a top member bearing surface. The top member bearing surface is slidably engageable with the base member bearing surface for pivotable movement of the top member relative to the base member between lowered and raised positions. Movement of the top member away from the lowered position and toward the raised position increases the distance between the rear sight alignment portion and a barrel axis of the firearm to thereby adjust the elevation of the rear sight alignment portion of the rear sight.