Adjustment Knob Revolution Counting via Reduction Gear
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Solution Overview
Problem
Existing adjustment towers for long-range optical devices, such as rifle scopes, are limited in the number of revolutions they can display, leading to mechanical instability, susceptibility to errors, and difficulty in reading the current revolution, especially in low light conditions. Additionally, they often require complex and asymmetrical designs that compromise bullet resistance and user-friendliness.
Innovation Solution
The adjustment tower incorporates a coupling mechanism that acts as a reduction gear between the rotary actuating element and the display element, allowing for a large number of revolutions to be displayed with a simple and user-friendly interface. This mechanism includes a display element that rotates only a fraction of a full revolution for each complete revolution of the actuating element, enabling easy reading of the current revolution and providing high mechanical stability and bullet resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a two-color marking on the display drum is used to indicate revolutions, then the display mechanism is compact, but the number of revolutions that can be displayed is severely limited to two revolutions and reading errors occur
Solution Approach 1:
The display drum is divided into multiple independent reading windows (first reading window, second reading window, third reading window) that can display different revolution information simultaneously. Each window can show markings for different revolution ranges, allowing the display of multiple revolutions beyond the previous two-revolution limit while maintaining reading accuracy through dedicated viewing areas.
Solution Approach 2:
The display system transitions from a single-plane two-color marking to a multi-dimensional arrangement with multiple reading windows positioned at different angular locations around the display drum. This spatial arrangement allows simultaneous display of multiple revolution counts without compromising reading precision, as each window provides a dedicated viewing zone.
2Loss of information
If viewing windows are added to display revolution information, then the current revolution can be indicated, but the structure becomes complex and susceptible to contamination
Solution Approach 1:
The display drum is integrated directly with the adjusting cap, eliminating the need for separate viewing windows. The markings are applied directly on the display drum surface that rotates with the adjusting cap, combining the display function with the existing structural element. This reduces overall structure complexity while maintaining the ability to display revolution information through the cap's transparent or translucent material.
Solution Approach 2:
The display drum serves multiple functions: it acts as both the rotating display element and the structural component that interfaces with the adjusting cap. By making the display drum itself transparent or translucent, it provides both structural support and information display capabilities without requiring additional separate viewing window components.
3Ease of operation
If the display element rotates continuously with the actuating element, then the display is always visible, but the mechanical stability and bullet resistance are compromised
Solution Approach 1:
The display element rotates intermittently rather than continuously, with discrete rotation steps corresponding to complete revolutions of the rotary actuating element. This periodic rotation occurs only at specific intervals (after each full revolution), providing sufficient display visibility for the user to read the current revolution count while maintaining mechanical stability during the majority of the adjustment cycle when the display remains stationary.
Data Source
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AI summary
The invention relates to an adjustment turret (20) for a telescopic sight (1), in particular a riflescope, comprising a base (21), a rotary actuating element (22) which is rotatable relative to the base (21) about a rotational axis (100), a display element (24) which is rotatable about the rotational axis (100) and has at least one externally visible marking (25) along its circumference, and a mechanical coupling mechanism (30) via which the rotary actuating element (22) interacts with the display element (24), wherein the coupling mechanism (30) is designed such that the display element (24) is rotatable about the rotational axis (100) by the rotary actuating element (22) in at least one rotational position of the rotary actuating element (22), characterized in that the coupling mechanism (30) is designed such thatthat during a complete rotation of the rotary actuating element (22) about the axis of rotation (100), the indicator element (24) can only be rotated by the rotary actuating element (22) by an angle of rotation which corresponds to a part of a complete rotation, relative to the base (21).