Switchable Trigger Module for Nail Gun Sequential Repetitive Firing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional nail guns require the trigger to be released after each nail firing, preventing continuous or repetitive firing without manual intervention, which limits their efficiency in nail-driving operations.
Innovation Solution
A switchable trigger module with a transmission unit, trigger arm unit, and trigger unit that allows the nail gun to switch between sequential and repetitive firing modes, enabling continuous nail driving by maintaining the contact arm in a resiliently biased position and using a blocking member to control the trigger arm's movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the trigger is released after each nail firing, then the plunger can be moved again for firing another nail, but the nail gun cannot fire continuously or repetitively without manual intervention
Solution Approach 1:
The trigger member is made switchable between two functional states (sequential firing mode and repetitive firing mode) through interaction with the blocking member. This dynamic reconfiguration allows the nail gun to transition from requiring manual trigger release to enabling continuous firing, directly resolving the contradiction between productivity and ease of operation.
Solution Approach 2:
The trigger mechanism's operational parameters are changed by introducing the blocking member that can be positioned to either allow or prevent trigger arm unit movement. This parameter change enables the system to switch between sequential and repetitive firing modes, eliminating the need for manual intervention while maintaining control.
2Reliability
If the contact arm is blocked by the contact arm itself, then the plunger cannot be moved for firing another nail, but the trigger mechanism becomes complex
Solution Approach 1:
The blocking member serves as an intermediary element between the trigger arm unit and the contact arm. It mediates the interaction by selectively allowing or preventing the trigger arm unit from moving in the direction opposite to the nail-exit direction, thereby controlling the firing mechanism without requiring complex trigger designs.
Solution Approach 2:
The blocking function is extracted from the trigger arm unit itself and implemented as a separate blocking member. This extraction simplifies the trigger mechanism by allowing the trigger arm unit to focus on its primary function while the blocking member independently provides the necessary control to prevent unintended firing.
3Productivity
If the trigger arm unit can move freely, then the nail gun can fire repetitively, but the nail gun may fire without nails available (dry-firing)
Solution Approach 1:
The detection module provides feedback about nail availability to the control mechanism. This feedback loop ensures that the trigger mechanism only allows firing when nails are actually available in the magazine, preventing dry-firing while maintaining continuous firing capability. The system monitors the nail supply and adjusts trigger availability accordingly.
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 efficient and continuous nail driving by allowing the nail gun to fire nails sequentially or repetitively without manual release, improving operational efficiency and preventing dry-firing through a detection module that ensures nails are available.
Implementation Method 1
The contact arm has an abutment front end, and is resiliently maintained at a normal position
Data Source
AI summary
A nail gun includes a gun body, a power module, a muzzle module and an switchable trigger module. The muzzle module includes a contact arm resiliently maintained at a normal position. The switchable trigger module includes a transmission unit, a trigger arm unit and a trigger unit. The transmission unit includes a transmission member that is connected to the contact arm. The trigger unit includes a trigger member and a blocking member. The trigger member is operable to move between a sequential firing position and a repetitive firing position.