Recoil Damping Device With Elastomeric Blades
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Solution Overview
Problem
Existing recoil damping systems for firearms are structurally complex, expensive, and ineffective across a wide range of munitions due to linear elastic behavior, failing to adequately absorb recoil energy from both powerful and weaker cartridges.
Innovation Solution
A recoil damping device with a damping means featuring a set of flexible blades with varying stiffness, arranged in a casing with a fixed and movable part, utilizing a material with elastic hysteresis to absorb recoil energy through progressive deformation, allowing for optimal performance across a broad range of munitions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If conventional damping systems with helical springs are used, then recoil energy absorption is achieved, but the system becomes structurally complicated and expensive
Solution Approach 1:
The patent extracts the damping function from complex mechanical assemblies (helical springs, dampers, levers) and implements it through a simple elastomeric material element that directly absorbs recoil energy through deformation, eliminating the need for multiple interconnected components
Solution Approach 2:
The patent changes the material parameter from linear elastic (helical springs) to non-linear elastomeric material with hysteresis, which provides progressive stiffness and effective energy dissipation through material properties rather than mechanical complexity
2Device complexity
If linear elastic damping means are used, then simple construction is achieved, but effectiveness across wide range of munitions is poor
Solution Approach 1:
The patent employs an elastomeric material with non-linear stress-strain characteristics and hysteresis, where the stiffness parameter changes progressively with deformation, enabling the same simple structure to effectively dampen recoil from various munition types with different energy levels
3Loss of energy
If elastic portion deforms during recoil, then recoil energy is absorbed, but lateral shifting occurs causing loss of aiming line
Solution Approach 1:
The patent segments the damping function into multiple discrete elastomeric elements (such as four blades arranged in pairs) that deform independently in controlled directions, absorbing energy while maintaining overall structural alignment and preventing lateral shifting through the collective action of segmented elements
Solution Approach 2:
The patent employs asymmetric blade geometry where the thickness varies along the length of each blade (thicker at the base, thinner at the tip), creating progressive resistance to deformation that absorbs energy while maintaining structural integrity and alignment stability
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 provides effective recoil damping with reduced weight and complexity, maintaining performance for all commercially available munitions by utilizing blades with exponential force resistance, preventing excessive deformation and ensuring consistent recoil absorption.
Implementation Method 1
utilizing a material with elastic hysteresis to absorb recoil energy through progressive deformation
Data Source
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AI summary
A recoil damping device (1) for portable firearms, including a casing (2) in which a recoil damping means (3) is inserted; the damping means includes a fixed part (5), which is integral with the casing, and a movable part (6) able to slide along a substantially axial direction inside the casing; the damping means (3) is made of a material having a certain elastic hysteresis and includes a set of flexible members connecting the fixed part to the movable part; the flexible members have different stiffnesses.