Firearm Sight Compensating Mechanism Zero-Point Return

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Solution Overview

Problem

Firearm sight compensating mechanisms lack a straightforward method to return to a zero-point state after initial correction, making it difficult for users to adjust for new targets at different distances.

Innovation Solution

Incorporation of a stop unit with a pin and curved groove mechanism that allows the adjusting cover to be rotated back to a zero-point position by axially moving the pin into the groove, enabling easy reversal to the reference state.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If the adjusting cover is rotated multiple times to correct bullet impact points, then the correction precision is improved, but the user loses track of the zero-point position and cannot easily return to the reference state

Engineering Contradiction:

Improvebullet impact point correction precisionVSAvoidease of returning to zero-point state

Core Design Contradiction:

Measurement precisionVSEase of operation

Solution Approach 1:

The pin and curved groove mechanism provides visual and tactile feedback to the user. When the pin engages with the curved groove, it creates a detectable stop position that indicates the adjusting cover has returned to the zero-point state. This feedback system allows users to know when they have completed a full rotation cycle without needing to count rotations or remember the initial position.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The stop unit automatically returns the adjusting cover to the zero-point position through the pin-groove engagement mechanism. When the user rotates the adjusting cover, the pin naturally engages with the curved groove at the reference position, self-correcting the position without requiring user intervention or memory to track multiple rotations.

Inventive Principle:

Principle #25Self-service

2Adaptability or versatility

If the adjusting cover is designed to rotate freely for correction adjustments, then the adaptability for different target distances is improved, but the mechanism loses the ability to automatically indicate the zero-point position

Engineering Contradiction:

Improveadaptability for different target distancesVSAvoidloss of zero-point position information

Core Design Contradiction:

Adaptability or versatilityVSLoss of information

Solution Approach 1:

The pin acts as an intermediary element between the adjusting cover and the base. It mediates the rotation movement by engaging with the curved groove to provide a physical reference point. This intermediary mechanism preserves the freedom of rotation needed for adjustments while simultaneously maintaining the zero-point position information through the groove's fixed geometry.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The curved groove is pre-formed in the adjusting cover at a specific position that corresponds to the zero-point reference. This preliminary positioning of the groove ensures that whenever the pin engages with it, the adjusting cover is automatically returned to the correct reference position, preserving position information without restricting adjustment freedom.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS11187495B2Compensating mechanism

Publication Date: 2021.11.30 SINTAI OPTICAL SHENZHEN CO LTD

AI summary

A compensating mechanism includes a base, an adjusting unit, an adjusting cover and a stop unit. The adjusting unit is disposed in the base. The adjusting cover connects to the adjusting unit and includes a curved groove. The stop unit is disposed between the adjusting unit and the base and includes a pin. When the adjusting cover is rotated, the adjusting unit is only rotated with respect to the base and the stop unit is axially moved with respect to the base so that the pin enters or leaves the curved groove.