Rolling Trigger Mechanism for Low-Force Firearm Operation
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Solution Overview
Problem
Current firearm triggers often lack a light and smooth pull, with excessive friction and energy required for operation, which can lead to unpredictable discharge and safety concerns.
Innovation Solution
The development of a rolling trigger mechanism that utilizes a moving chassis assembly with rolling bearings and a rolling element to facilitate smooth and low-friction movement, allowing for a crisp and predictable trigger pull with reduced energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If traditional trigger mechanisms are used, then the trigger can hold the hammer securely, but the trigger pull requires excessive force and produces friction
Solution Approach 1:
The patent replaces traditional sliding mechanical contact with a rolling element bearing system. The rolling element (ball bearing) substitutes for the conventional sliding sear mechanism, transforming the friction-based mechanical interaction into a rolling contact system that significantly reduces friction and required trigger pull force while maintaining secure hammer retention
Solution Approach 2:
The patent changes the fundamental parameter of contact interaction from sliding friction to rolling friction. By introducing the rolling element bearing, the coefficient of friction is dramatically reduced, allowing the trigger to move with minimal force while still maintaining the necessary holding capability on the hammer
2Reliability
If traditional sear mechanisms are used, then the trigger can maintain a secure hold on the hammer, but the trigger pull feels heavy and unpredictable
Solution Approach 1:
The rolling element bearing replaces the traditional sliding sear mechanism, eliminating the stick-slip friction characteristics that cause unpredictable trigger pulls. The rolling contact provides consistent, smooth motion while the geometric design of the rolling element maintains reliable engagement with the hammer, ensuring secure retention until discharge
Solution Approach 2:
The patent employs a spherical rolling element (ball bearing) that provides continuous point contact and smooth rolling motion. The spherical geometry eliminates the linear sliding friction of traditional sears, creating a consistently smooth trigger pull feel while maintaining reliable hammer retention through proper geometric engagement
3Force
If high-friction trigger mechanisms are used, then the trigger can maintain secure engagement, but excessive energy is consumed during operation
Solution Approach 1:
The rolling element bearing system substitutes for high-friction sliding mechanisms, reducing the energy required for trigger operation. The rolling contact minimizes energy loss to friction while maintaining secure hammer engagement through geometric design, allowing the trigger to hold and release the hammer with minimal energy input
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 rolling trigger mechanism provides a light, smooth, and consistent trigger pull, enhancing shooter control and safety by minimizing friction and energy needed for discharge, while maintaining a secure hold on high-pressure mechanisms.
Implementation Method 1
a rolling trigger mechanism that utilizes a moving chassis assembly with rolling bearings and a rolling element to facilitate smooth and low-friction movement
Data Source
AI summary
In an embodiment, a low-force, low-friction, short-travel, low-energy control rolling trigger utilizes a rolling element as a trigger-release mechanism in equipment, machines and tools such as for clutches, brakes, actuators, and projectile launchers. The rolling elements within the trigger mechanism reduce the friction, which in-turn reduces the force necessary to discharge trigger. In an embodiment, the trigger is part of a firearm and uses a mechanical trigger. In another embodiment, the trigger is activated by an electronic signal that activates a solenoid, which pulls the rolling element, and thereby releases the striker or in a trigger-release assembly.