Thumb Tab Actuator for Firearm Sling Snaphook
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Solution Overview
Problem
The existing snap-hooks, such as the HK style, are difficult to open and close rapidly due to the narrow lever design and interference from the user's thumb or glove material, which slows down the latching and unlatching process when securing or releasing a sling from a firearm.
Innovation Solution
A thumb tab actuator is introduced, which includes a body with a tab extending outwardly from the lever's plane, allowing the user to apply pressure without interfering with the lever and hook, and is securely mounted using apertures and fasteners, enabling efficient opening and closing of the snap-hook.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the snap-hook lever is made narrow to maintain a compact design, then the device complexity is reduced, but the ease of operation deteriorates because it becomes difficult to open the snap-hook
Solution Approach 1:
The thumb tab extends perpendicular to the plane of the lever, adding a third dimension to the actuation mechanism. This allows the user to apply force in a direction that does not interfere with the hook's clearance area, resolving the contradiction between maintaining a narrow lever design and improving ease of operation
2Ease of operation
If the user applies pressure directly to the lever to open the snap-hook, then the operation is simple, but the productivity deteriorates due to interference from thumb or glove material with the hook
Solution Approach 1:
The actuation function is extracted from the lever itself and transferred to a separate thumb tab component. This separation allows the user's thumb to apply force to the tab without interfering with the hook's movement and clearance area, eliminating the interference problem while maintaining simple operation
3Reliability
If the snap-hook uses a strong internal spring to keep the lever closed and locked, then the reliability is improved, but the ease of operation worsens because the user has difficulty opening it
Solution Approach 1:
The strong spring force is maintained for reliability, but the actuation point is moved to a perpendicular dimension via the extending tab. This allows the user to apply leverage effectively without the thumb interfering with the hook's clearance area, maintaining both reliability and ease of operation
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 thumb tab actuator allows for rapid and efficient operation of the snap-hook, reducing the chances of thumb or glove material interference, thus facilitating quicker attachment and detachment of the sling from a firearm.
Implementation Method 1
The lever typically includes a spring that compresses when a user applies pressure in order to open the snap-hook
Implementation Method 2
the body includes a tab extending outwardly in a second plane transverse to the first plane when the body is mounted to the lever, such that the lever pivots in response to a force exerted on the tab
Data Source
AI summary
A thumb tab actuator for a firearm sling snap-hook is provided. The thumb tab actuator includes a body having a surface that engages a lever of a snap-hook that pivots in a first plane. The actuator body is adapted to be removably mounted to the lever, and the body includes a tab extending outwardly in a second plane transverse to the first plane when the body is mounted to the lever, such that the lever pivots in response to a force exerted on the tab. A user may couple the thumb tab to the snap-hook via a screw or other fastener. In some embodiments, the thumb tab includes a second tab for an ambidextrous configuration.