Twisting Trigger Switch for Selectable Release and Reset
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Solution Overview
Problem
Existing firearm trigger mechanisms lack the ability to conveniently switch between squeeze and release firing modes and safely reset to an idle position, complicating user operation and mode identification.
Innovation Solution
A trigger assembly with a twisting switch that sets different firing modes based on twist angles, allowing for selective disengagement of trigger sears from a firing pin retainer, and a spring mechanism to lock the twist position, enabling easy mode switching and safe reset.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a traditional trigger mechanism is used, then the structure is simple, but the ability to switch between squeeze and release firing modes is lacking
Solution Approach 1:
The trigger mechanism incorporates a rotating switch that can be dynamically positioned to different angles (first angle for squeeze mode, second angle for release mode) to change the firing mode. This dynamic reconfiguration allows a single mechanism to perform multiple functions without requiring separate trigger assemblies for each mode.
Solution Approach 2:
The trigger assembly integrates multiple functions into a single system: the trigger body houses both squeeze and release firing capabilities, the rotating switch provides mode selection, and the sears engage with the firing pin retainer in different configurations based on the switch position. This multi-functional design eliminates the need for separate trigger mechanisms for different firing modes.
2Adaptability or versatility
If mode switching capability is added to the trigger, then firing mode versatility improves, but the ease of operation decreases
Solution Approach 1:
The rotating switch is spring-loaded and automatically returns to its neutral position or designated safe position after being rotated to select a firing mode. This self-returning mechanism eliminates the need for the user to manually reset the switch after mode selection, reducing operational steps and maintaining simplicity while providing mode versatility.
Solution Approach 2:
The trigger mechanism is pre-configured with designated stop positions for the rotating switch that correspond to specific firing modes. The spring mechanism pre-loads the switch to ensure it snaps into the correct position during rotation, providing intuitive and reliable mode selection without requiring precise user control or complex adjustment procedures.
3Loss of information
If a rotating switch mechanism is added, then mode identification improves, but the device complexity increases
Solution Approach 1:
The rotating switch incorporates visual indicators (such as colored markers, engraved symbols, or positioned indices) that align with corresponding indicators on the switch housing to clearly indicate the current firing mode. This visual feedback system provides immediate and unambiguous mode identification without requiring complex electronic displays or additional controls.
Solution Approach 2:
The switch housing contains localized features such as engraved markings, positioned windows, or aligned indicators at specific locations that correspond to each firing mode position. These localized visual cues provide mode identification only where needed, maintaining a clean and simple overall design while ensuring clear communication of the current mode to the user.
4Stability of the object's composition
If spring mechanism is added to lock twist position, then mode stability improves, but the manufacturing complexity increases
Solution Approach 1:
The spring mechanism is designed as a separate, pre-assembled unit that can be independently manufactured and then installed into the switch housing as a single assembly step. This modular approach extracts the spring loading function from the main trigger mechanism, allowing it to be manufactured separately with optimized processes and then easily integrated, thereby reducing overall manufacturing complexity while ensuring stable switch 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
Enables convenient operation in either squeeze or release firing modes with safe reset, enhancing user experience and operational safety.
Implementation Method 1
a spring provided between the internal and external steps and configured to urge the external step away from the internal step and the pin into the one of the first and second channels
Data Source
AI summary
A trigger assembly includes a trigger housing body, a firing pin retainer, a first trigger sear, a twisting switch housing and a twisting switch. The firing pin retainer is mounted to the trigger housing body near a top thereof so as to pivot about a transverse axis. The first trigger sear is mounted to the trigger housing body so as to pivot about a transverse axis and is configured to selectively support the firing pin retainer to retain a firing pin. The twisting switch housing is at least partially contained by the trigger housing body. The twisting switch has proximal and distal ends and is mounted within the twisting switch housing. The twisting switch is configured to, at a first twist angle, set a first firing mode for the trigger assembly and, at a second twist angle, set a second firing mode for the trigger assembly.