Firearm Trigger Assembly with Spherical Bearing for Accuracy
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Solution Overview
Problem
Traditional trigger assemblies in firearms are prone to accuracy issues due to non-linear pressure application, causing the firearm to pull to one side and reducing precision, as they are designed for linear motion only.
Innovation Solution
A trigger assembly design that incorporates a spherical bearing and ball joints allowing the trigger to move in all six degrees of freedom, enabling the sear to disengage from the hammer regardless of the direction of pressure applied, thereby reducing side-to-side forces and maintaining accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a traditional trigger assembly is designed for linear motion only, then the structure is simple, but the firearm pulls to one side when non-linear pressure is applied, reducing accuracy
Solution Approach 1:
The patent replaces the traditional linear motion trigger mechanism with a spherical joint that allows motion in all six degrees of freedom. The spherical joint includes a spherical head and a spherical socket, enabling the trigger to accommodate non-linear pressure application from any direction while maintaining accurate hammer discharge. This curvature-based design eliminates trigger pull by allowing the trigger to move naturally in the direction of force application.
Solution Approach 2:
The patent introduces a dynamic spherical joint mechanism that adapts to the direction and magnitude of applied force. The spherical joint allows the trigger to rotate and move freely in any direction, transforming the static linear motion constraint into a dynamic multi-directional motion system. This dynamic response ensures that the trigger activates the hammer discharge function regardless of the angle or direction of pressure applied by the user.
2Ease of operation
If the trigger assembly allows motion in all six degrees of freedom, then non-linear pressure does not cause trigger pull, but the device complexity increases
Solution Approach 1:
The spherical joint mechanism provides ease of operation by naturally accommodating force application from any direction. The spherical head and socket configuration allows the trigger to move freely in all six degrees of freedom, eliminating the need for users to compensate for trigger pull. The geometry of the spherical joint inherently guides the trigger through its arc of fire while maintaining reliable engagement with the hammer.
Solution Approach 2:
The spherical joint acts as an intermediary mechanism between the trigger and the hammer discharge system. It translates force vectors from any direction into effective trigger activation while isolating the hammer discharge function from side forces. The spherical joint mediates the interaction between user input and the firing mechanism, ensuring reliable discharge regardless of pressure direction.
3Manufacturing precision
If a spherical bearing and ball joints are incorporated, then side-to-side forces are reduced, but the manufacturing complexity increases
Solution Approach 1:
The spherical joint components are designed with standard spherical geometries that can be manufactured using conventional machining processes. The spherical head and socket can be produced through turning, milling, or 3D printing operations, and the ball joint elements can be fabricated using similar methods. While precision is required for proper fit and motion, the overall design uses straightforward geometric forms that are more manufacturable than complex multi-link mechanisms.
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 design significantly reduces side-to-side forces on the trigger, enhancing firearm accuracy by allowing the sear to disengage from the hammer without being affected by non-linear pressure, resulting in improved precision and stability.
Implementation Method 1
a spherical bearing engaging the spherical portion, wherein the spherical bearing is adapted to move about the spherical portion thereby responding to pressure on the trigger in all six degrees of freedom
Implementation Method 2
Each of the one or more ball joints includes a spherical bearing element and a bearing seat that receives the spherical bearing element, wherein the one or more ball joints are configured to enable the trigger to move in six degrees of freedom
Data Source
AI summary
A trigger assembly apparatus includes spherical portion(s) and spherical bearing(s), rounded sear, stabilizing catch, and complimentary shield. In an exemplary embodiment, the spherical portion(s) and spherical bearing(s) respond to non-linear movement. Further, the interaction of the spherical portion(s) and spherical bearing(s) results in the mobility of the trigger in relation to the 6 degrees of freedom thereby resulting in the firearm being generally unaffected by side to side movement of the trigger during activation. The trigger assembly may also include but is not limited to a rounded sear, stabilizing catch, and complimentary shield. The rounded portion of the sear engages the hammer stop notch at a single point further resulting in the firearm being generally unaffected by side to side movement of the trigger. Additionally the stabilizing catch and shield helps facilitate the proper reset of the trigger assembly.