Blade Damper Structure for Recoil-Stable Linear Movement
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Solution Overview
Problem
Existing firearm accessories face challenges in maintaining precise relative position after recoil, as they experience recoil-induced movements and frictional forces, leading to performance degradation and increased cost due to the need for robustness and large numbers to handle high accelerations.
Innovation Solution
A device comprising two sets of blades symmetrically mounted about a plane, allowing linear movement in one direction while counteracting secondary movements with a second set of blades to ensure stiffness in all other directions, using a multiple porch-swing system to mitigate recoil and maintain precise positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If damping springs are used to limit forces on accessory components, then component robustness is improved, but movement of the accessory relative to the weapon occurs during dampening
Solution Approach 1:
The patent replaces traditional damping springs with a friction-based damping system using a damping element that rotates on a damping axis. This substitution allows force absorption through rotational friction rather than linear spring compression, enabling the accessory to remain stationary relative to the weapon while still protecting components from excessive forces.
Solution Approach 2:
The patent changes the damping mechanism from elastic deformation (springs) to frictional resistance (rotating element). By adjusting friction parameters and the moment of inertia of the damping element, the system can control force transmission while maintaining positional stability during recoil events.
2Ease of operation
If roller-based systems are used to allow movement, then linear movement is enabled, but frictional forces cause parts to come to rest at new positions after each shot
Solution Approach 1:
The patent replaces roller-based friction contact with a friction-based damping system that uses controlled rotational friction. Instead of relying on low-friction rollers that still experience static friction, the system uses a deliberately designed friction interface that dissipates recoil energy while preventing positional drift through controlled resistance.
Solution Approach 2:
The patent converts the typically harmful effect of friction into a beneficial damping mechanism. By intentionally introducing friction through the rotating damping element, the system dissipates recoil energy and prevents the accessory from settling at incorrect positions, thereby improving precision despite the presence of friction.
3Reliability
If accessories are made more robust to handle high recoil accelerations, then reliability is improved, but system weight and cost increase
Solution Approach 1:
The patent introduces a damping element as an intermediary between the accessory and the weapon. This intermediate component absorbs and dissipates recoil forces through controlled friction, protecting the accessory components from high accelerations without requiring the accessory itself to be heavily reinforced, thereby maintaining low weight.
Solution Approach 2:
The damping element provides beforehand cushioning by being pre-configured to absorb recoil forces before they reach the accessory components. The friction-based damping mechanism is designed to limit forces to safe levels during anticipated recoil events, protecting sensitive components without adding significant weight to the accessory.
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 device effectively reduces recoil-induced movements, ensuring accessories regain their original position without angular displacement, enhancing precision and reducing system weight and cost.
Implementation Method 1
The blades are configured to move primarily in a first direction upon being subjected to a linear force in said first direction
Implementation Method 2
WO2021/244716 A1 discloses a damper system which uses rotational friction dampers (40) to dampen a lateral movement of a cable
Data Source
AI summary
A device for achieving linear movement in a single direction and stiffness in all other directions. As an example, a recoil causes strong forces in a linear movement, but any ridges will produce errors as two units each try to return to its original position. The device is a damper. The linear displacement by a recoil is mitigated using two set of blades, one absorbing the linear recoil, and a second for hindering the linear parallel deflection of the first set by the recoil or for increasing the stiffness provided by the first set of blades. The produced errors are much smaller or none as the recoil is mitigated using the very strong damper.