Adjustable Zero-Stop Turret With Linking Structure
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Solution Overview
Problem
Existing rifle scopes with zero-stop mechanisms are often difficult for users to initially adjust and require significant disassembly, which can lead to frustration, especially when changing ammunition or moving the scope between firearms.
Innovation Solution
A turret with an adjustable zero-stop mechanism and a locking feature that includes a main screw, turret cover with a locking ring, and a linking structure that allows limited axial travel to prevent disengagement, enabling easy setting and re-setting of the zero point without the need for multiple tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a zero-stop mechanism is incorporated into the turret, then the rifle scope can be sighted in at a known distance with mechanical indication, but the mechanism becomes difficult for users to initially adjust and requires significant disassembly
Solution Approach 1:
The turret is divided into separate components including a turret cover, turret housing, and zero-stop mechanism that can be independently accessed. The locking ring can be disengaged from the turret housing to allow access to the zero-stop adjustment mechanism without complete disassembly, enabling users to adjust the zero point while maintaining most of the turret assembled.
Solution Approach 2:
A linking structure with limited axial travel is introduced as an intermediary between the turret cover and turret housing. This linking structure allows the turret cover to be partially removed for zero-stop adjustment while preventing complete disengagement, serving as a mediator that balances accessibility with structural integrity.
2Ease of operation
If the zero-stop mechanism is made accessible for adjustment, then users can easily re-set the zero point, but the turret cover may become disengaged or lost
Solution Approach 1:
The linking structure acts as an intermediary connection between the turret cover and turret housing, allowing the turret cover to be partially removed for adjustment while preventing complete disengagement. The limited axial travel feature ensures the turret cover remains connected during the adjustment process, eliminating the risk of losing components.
Solution Approach 2:
The turret cover transition from a fixed, permanently attached state to a dynamically adjustable state. The cover can be partially removed and reattached, transitioning between locked and unlocked positions. This dynamic design allows temporary accessibility for adjustment while maintaining structural connection to prevent loss.
3Reliability
If a locking feature is added to prevent accidental adjustment, then the turret position is secured, but the device complexity increases
Solution Approach 1:
The locking feature is merged with the existing zero-stop mechanism and turret cover removal process. The same actions required to access the zero-stop adjustment (partially removing the turret cover) also engage or disengage the locking feature. This merging eliminates the need for a separate, independent locking mechanism, maintaining simplicity while providing security.
Solution Approach 2:
The turret cover itself serves as the locking mechanism through its engagement with the turret housing. When the turret cover is reattached after adjustment, it automatically locks into place, preventing accidental rotation. The system uses its own components (turret cover, locking ring, linking structure) to provide the locking function without requiring external or additional specialized parts.
Data Source
AI summary
An adjustable zero-stop turret assembly for an optical firearm scope, the turret assembly defining an axis and including: a turret housing with a cavity to receive a head portion of a main turret screw and including a wall portion defining an opening; a rotatable zero-stop element carrier including a base portion, an upper portion and a first zero-stop element coupled to the base portion; an adjustable set screw adjacent the opening; a second zero-stop element receiving the screw, a first portion of the second zero-stop element positioned within the opening, and a second portion of the second zero-stop element projecting outside the opening and into the turret-housing cavity. The second zero-stop element travels axially along the screw from a first position to a second position. In the second position, portions of the first zero-stop element and the second zero-stop element reside in a common plane perpendicular to the axis.