Tool-less Re-zero Adjustment Knob for Aiming Devices
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Solution Overview
Problem
Existing optical aiming devices, such as rifle scopes, require complex tool-based methods for re-zeroing adjustment mechanisms, which can be cumbersome and inefficient for shooters.
Innovation Solution
The development of an adjustment knob system that allows for re-zeroing without tools, featuring a dial and rotating member configuration with a locking mechanism and clutch system, enabling users to easily adjust and lock the scope settings by disengaging and re-engaging the dial from the rotating member.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a tool-based method (hex key and grub screw) is used to loosen and tighten the dial for re-zeroing, then the adjustment mechanism can be securely locked, but the re-zeroing process becomes complex and requires additional tools
Solution Approach 1:
The invention extracts the locking function from a separate tool-based system (hex key and grub screw) and integrates it into the dial assembly itself through a spring-loaded latch mechanism. The latch is automatically engaged when the dial is pushed in and can be released by pressing a release button, eliminating the need for external tools while maintaining secure locking.
Solution Approach 2:
The adjustment mechanism becomes self-servicing through the integrated latch system. The spring automatically engages the latch when the dial is inserted, and the user can release it with a simple button press. This self-contained system performs both locking and unlocking functions without requiring external tools or complex procedures.
2Stability of the object's composition
If the dial is permanently fixed to the threaded member, then the adjustment setting remains stable, but the ability to re-zero the scope becomes difficult and time-consuming
Solution Approach 1:
The invention transforms the static, permanent connection between dial and threaded member into a dynamic, reversible connection. The spring-loaded latch automatically engages to provide stable locking during normal use, but can be quickly disengaged by pressing the release button, enabling rapid re-zeroing without permanent fixation.
Solution Approach 2:
The spring latch is pre-positioned and pre-loaded to automatically engage with the threaded member when the dial is inserted. This preliminary positioning ensures that the locking action occurs automatically during assembly, eliminating the need for manual locking steps and reducing re-zeroing time.
3Ease of operation
If a simple push-button release mechanism is used, then re-zeroing becomes fast and easy, but the locking mechanism may be accidentally disengaged
Solution Approach 1:
The release mechanism uses asymmetric geometry where the button must be pressed in a specific direction (axially inward) to disengage the latch. The latch itself has an asymmetric profile that engages with a corresponding feature on the threaded member, requiring deliberate action to release while preventing accidental disengagement from lateral or unintended forces.
Solution Approach 2:
The spring-loaded latch is pre-loaded in the engaged position, creating a force that must be overcome to disengage. This preliminary positioning against the engaged state provides resistance to accidental release, while the button mechanism concentrates force in the specific direction needed to overcome the spring load and release the latch.
Data Source
AI summary
User-zeroable adjustment knobs for an aiming device include a rotating member that is rotated to change a setting of the aiming device, a dial selectively couplable to the rotating member via a clutch for co-rotation therewith, and a locking mechanism that prevents the dial and rotating member from rotating relative to the aiming device when the locking mechanism is locked. The clutch is disengageable without the use of tools to allow the dial to rotate relative to the rotating member for zeroing the aiming device. The locking mechanism may include a lock release that is accessible from outside of the dial and movable relative to the dial and the rotating member to release the locking mechanism. Methods of zeroing locking adjustment knobs are also disclosed.