Compact Back-Up Sights With Centering Aperture Mechanisms
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Solution Overview
Problem
Existing firearm sights suffer from misalignment issues due to thread tolerance between the sight post and housing, aperture misalignment causing visual distraction, and bulky detent mechanisms, necessitating a refined and compact sighting system.
Innovation Solution
A firearm sighting system with a front sight featuring a diamond-shaped aperture and single detent for stable centering, and a rear sight with a compact windage detent mechanism and aperture mechanism that tilts to maintain alignment and reduce size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If traditional threaded sight post installation is used, then ease of manufacture is improved, but alignment stability deteriorates due to thread tolerance causing sight post movement
Solution Approach 1:
The sight post assembly is segmented into a sight post body and a separate sight post cap, where the cap is pressed onto the threaded portion. This segmentation allows the threaded section to be optimized for manufacturing while the cap provides the stable, non-moving interface with the housing, resolving the contradiction between ease of manufacture and alignment stability.
Solution Approach 2:
The sight post cap acts as an intermediary element between the threaded sight post and the housing. It receives the threaded portion and provides a stable, aligned interface with the housing, eliminating the direct thread-to-housing contact that causes misalignment while maintaining manufacturing simplicity.
2Adaptability or versatility
If L-shaped aperture housing with 90° rotation is used, then aperture selection function is improved, but lateral shift and visual distraction increase causing misalignment
Solution Approach 1:
Instead of rotating the aperture housing 90° to select between apertures, the invention inverts the approach by using a linear sliding mechanism where the aperture housing moves parallel to the barrel axis. This eliminates the lateral shift that occurs with rotational movement, maintaining aperture alignment precision while preserving the aperture selection function.
Solution Approach 2:
The aperture housing is designed to be movable relative to the sight post, allowing dynamic selection between apertures through linear translation rather than rotation. This dynamic mechanism maintains precise alignment by avoiding the lateral displacement inherent in rotational aperture selection.
3Measurement precision
If separate spring and detent mechanism are used for windage adjustment, then adjustment precision is improved, but device complexity and size increase
Solution Approach 1:
The invention merges the spring and detent into a single integrated component - a leaf spring with built-in detent features. This combining reduces the number of separate parts, simplifies the overall mechanism, and reduces size while maintaining the precision of windage adjustment through the integrated spring-action detent system.
Solution Approach 2:
The leaf spring serves multiple functions simultaneously: it provides the spring action for adjustment, the detent features for positioning, and the structural support for the mechanism. This multi-functionality eliminates the need for separate spring and detent components, reducing complexity while preserving adjustment precision.
Data Source
AI summary
A sighting system for a firearm and related methods are disclosed. The sighting system has front and rear flip-up sights, wherein the front sight comprises a flip-up portion having an aperture through which a sight post can partially extend; a knob comprising one or more notches on a first side and the sight post extending from a second side; at least one detent arranged to face and interact with the one or more notches. The knob is configured to rotate about a first axis, where the rotation causes the sight post to move in a first direction along the first axis; tilting of the knob in a second direction based on the detent interfacing with the notches; and tilting of the sight post in the second direction, thereby forcing at least a portion of the sight post to press against the aperture, or a combination thereof.