Quick-Release Night Vision Interface Snap-Fit Mechanism
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Solution Overview
Problem
Existing night-vision device interfaces are inconvenient for mounting and dismounting due to their large size, poor stability, and require multiple turns for accurate positioning and quick release.
Innovation Solution
A quick-release night-vision device interface featuring a snap-fitting mechanism with a connection device and a connection ring, including a spring-based fixing mechanism and O-ring for secure and accurate alignment, allowing for easy attachment and detachment without threaded connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If threaded connections with male and female threads are used, then the connection is stable and secure, but the mounting and dismounting process requires many turns and is inconvenient for quick release
Solution Approach 1:
The patent replaces the traditional threaded mechanical connection system with a snap-fit mechanism combined with a bayonet-style quarter-turn locking system. The snap-fit provides initial secure engagement through elastic deformation of locking lugs, while the quarter-turn rotation engages cam surfaces that lock the connection, eliminating the need for multiple threaded turns while maintaining connection stability.
Solution Approach 2:
The connection interface incorporates dynamic elements including spring-loaded locking lugs that can flex during engagement, a rotating bayonet mechanism that transitions from unlocked to locked position, and cam surfaces that convert rotational motion into locking force. This dynamic system allows quick transition between mounted and dismounted states while ensuring secure connection when engaged.
2Reliability
If threaded connections are used, then the connection can be secure, but the interface is large in size and takes up more space
Solution Approach 1:
The bayonet-style locking mechanism is nested within the connection ring structure, with the locking lugs and cam surfaces integrated into the existing connection geometry. The spring mechanism is housed within the connection ring's internal cavity, and the locking key operates within a compact keyway. This nesting minimizes the overall volume of the connection interface while maintaining all necessary locking and securing functions.
3Manufacturing precision
If threaded connections are used, then the connection can be made, but accurate positioning and quick release are difficult to achieve
Solution Approach 1:
The snap-fit locking lugs are pre-positioned on the connection ring at precise locations that align with corresponding grooves on the mounting surface. The bayonet mechanism's cam surfaces are pre-configured to engage at specific rotation angles, and the locking key is pre-set to engage the locking hole at the correct position. This preliminary positioning ensures accurate alignment is achieved automatically during the quick-connect process, eliminating the need for manual adjustment or multiple turns for positioning.
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 solution provides a compact, stable, and repeatable interface with high accuracy and convenience for quick release, enhancing the usability of night-vision devices by eliminating the need for threaded connections and improving positioning precision.
Implementation Method 1
a spring-based fixing mechanism
Implementation Method 2
O-ring for secure and accurate alignment
Data Source
AI summary
Disclosed is a quick-release night-vision device interface, which relates to the field of night-vision devices, and which includes a night-vision device body and a connection device to which a sight is mounted. The connection device is snap-fitted on a connection ring of the night-vision device body, and the connection ring is provided with a fixing mechanism for fixing the connection device. A snap boss is fixedly mounted on an outer side of the connection ring, and an inner side wall of the connection device is provided with a snap groove snap-fitted with the snap boss of the connection ring. An inner side of the connection ring is provided with a snap groove, and an outer side wall of the sight is provided with a snap boss snap-fitted with the snap groove on the inner side of the connection ring. In the present invention, the connection device is connected to the night-vision device body in a snap-fitting manner, and the connection device is small in size and is stable and convenient, so that the use of threads or other forms of engagement is avoided, and accurate positioning, and stable, reliable and quick mounting and dismounting are facilitated.