Friction Coupling for Continuous Reticle Adjustment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing coupling mechanism between an adjustment ring and an index ring in telescopic sights allows only discrete changes, affecting the accuracy of reticle settings for varying target distances due to different ammunition types, and requires a special tool for continuous adjustment.
Innovation Solution
A spring pressure-loaded friction element is integrated between the adjustment ring and the index ring, with a pressure element that can be actuated to release the friction pressure, allowing continuous rotation and automatic re-establishment of the coupling under spring pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a mutual interlocking mechanism with teeth is used to couple the adjustment ring and index ring, then the coupling can be established and released, but only discrete changes in relative position are possible, affecting the accuracy of reticle setting
Solution Approach 1:
The patent replaces the traditional mechanical tooth-based interlocking system with a friction-based coupling system. A friction element under spring pressure creates continuous contact between the adjustment ring and index ring, eliminating the discrete step changes caused by tooth engagement while maintaining secure coupling. This substitution of mechanical engagement type enables continuous adjustment for improved measurement precision.
Solution Approach 2:
The patent changes the coupling parameter from discrete angular positions (tooth engagement) to continuous friction-based pressure. By controlling the spring pressure on the friction element, the system transitions from fixed detent positions to continuously variable relative positioning, thereby improving the accuracy of reticle setting for different ammunition types and target distances.
2Ease of operation
If a mutual interlocking mechanism with teeth is used, then coupling can be established, but a special tool is required for release and re-establishment
Solution Approach 1:
The friction-based coupling system with spring pressure enables the user to directly release and re-establish the coupling between the adjustment ring and index ring without requiring special tools. The spring pressure can be easily modulated by the user to disengage and re-engage the friction element, making the system self-serviceable and improving ease of operation.
3Adaptability or versatility
If discrete detent positions are used for adjustment ring, then standardized target distances can be set, but continuous adjustment for different ammunition types is not possible
Solution Approach 1:
By replacing the discrete tooth-based mechanical coupling with a continuous friction-based coupling system, the patent enables the index ring to be rotated to any position relative to the adjustment ring, not just at discrete detent positions. This continuous adjustability allows precise adaptation to different ammunition types while maintaining the standardized detent positions for target distance selection.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables continuous and accurate adjustment of the reticle elevation without the need for a special tool, improving the precision and flexibility in adapting to different ammunition types.
Implementation Method 1
a spring pressure-loaded friction element is inserted between the adjustment ring and the ring surface
Implementation Method 2
The spring pressure can be removed by way of a pressure element inserted into the top face of the adjustment ring
Data Source
AI summary
A device is provided for establishing or releasing the coupling between an adjustment ring, which can be rotated on a base element by way of a detent mechanism and is provided with an adjustment shaft for optical elements, and a cylindrical index ring, which is inserted between the adjustment ring and the base element so as to rotate in relation to an index mark provided on the base element, wherein an inwardly directed ring surface is integrally formed on the edge of the index ring pointing toward the adjustment ring, at least one friction element under spring pressure is inserted between the adjustment ring and the ring surface, and the spring pressure can be removed by way of a pressure element inserted into the top face of the adjustment ring or by way of a lever mechanism.