Optical Sight Adjustment Using a Double Torsion Spring
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Solution Overview
Problem
Conventional optical sighting devices lack a mechanism to widen the range of adjustment for tilting the cylindrical body, which limits the adjustable range of the optical sighting device.
Innovation Solution
Incorporating a double torsion spring and an adjustment mechanism that allows the tilting of the erect system cylinder, using an advancing-retracting member and a spring fixing part to secure the double torsion spring, enabling broader adjustment of the optical sighting device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional spring mechanism is used to tilt the cylindrical body, then the adjustment mechanism is simple, but the adjustment range is limited
Solution Approach 1:
The patent changes the key parameter from using a conventional single torsion spring to using a double torsion spring mechanism. This parameter change enables the cylindrical body to tilt over a broader range while maintaining mechanical simplicity. The double torsion spring provides enhanced elastic resilience that accommodates larger angular deviations without increasing the overall structural complexity significantly.
Solution Approach 2:
The patent implements a dynamic adjustment mechanism where the cylindrical body can tilt freely within a widened range by utilizing the elastic properties of the double torsion spring. The advancing-retracting member dynamically adjusts the position by pushing or pulling the cylindrical body, while the spring dynamically absorbs and releases energy to maintain the tilted position, creating a flexible and adaptable system.
2Adaptability or versatility
If the cylindrical body tilts within a limited range, then the mechanism structure is compact, but the adjustable range of the optical sighting device is restricted
Solution Approach 1:
The patent utilizes the elastic parameter of the double torsion spring to enable larger tilt angles without proportionally increasing the mechanism volume. The spring's ability to store and release elastic energy allows the system to achieve a broader adjustable range while maintaining a relatively compact structure, as the spring deforms within its own volume rather than requiring additional space for mechanical linkages.
3Reliability
If a double torsion spring is used to bias the cylindrical body, then the resilience and adjustment range are improved, but the device complexity increases
Solution Approach 1:
The patent merges the functions of two torsion springs into a unified double torsion spring mechanism that biases the cylindrical body. This combined structure provides enhanced resilience and reliability by distributing the mechanical stress across two spring elements while maintaining a single integrated component. The merging approach improves reliability without proportionally doubling the complexity, as the two springs work together in a coordinated manner within the same structural framework.
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
The double torsion spring provides high resilience, allowing for a larger adjustment range and secure fixation, enhancing the optical sighting device's ability to adjust the impact position accurately in multiple directions.
Implementation Method 1
a double torsion spring, biasing the erect system cylinder toward the advancing-retracting member
Data Source
AI summary
An optical sighting device 10 used by being installed to a firearm includes: an objective system part 12, forming an inverted image of a target object on a first focal plane; and an erect system part 14, forming an erect image obtained by reversing the inverted image on a second focal plane. The erect system 14 has: lenses 112 to 116 arranged between the first focal plane and the second focal plane; and a movable cylinder 134 as an erect system cylinder holding the lenses 112 to 116. The adjustment mechanism 20 is a mechanism for adjusting tilting of an axial direction of the movable cylinder, and has: an advancing-retracting shaft 204 as an advancing-retracting member advancing and retracting on an end side of the movable cylinder 134; and a spring 206 as a double torsion spring biasing the movable cylinder 134 toward the advancing-retracting shaft 204.