Adjustable Firearm Grip for Wrist Strain Reduction

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Solution Overview

Problem

Conventional firearm grips do not effectively correct for ulnar deviation in various shooting stances, leading to wrist fatigue and injury, and lack quick adjustability in the field.

Innovation Solution

An adjustable firearm grip system with a locking device and push button mechanism that allows the lower grip portion to be angularly adjusted relative to the upper grip portion along a pivot axis, enabling secure positioning in multiple angles without removal of the upper grip portion, thereby accommodating different shooting stances and reducing wrist strain.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If conventional fixed-angle grips are used, then the structure is simple and manufacturing is easy, but wrist fatigue and injury occur due to ulnar deviation in various shooting stances

Engineering Contradiction:

Improvewrist fatigue and injuryVSAvoidgrip structure complexity

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The grip angle is made dynamically adjustable through a locking mechanism that allows the lower grip portion to rotate relative to the upper grip portion. The shooter can adjust the grip angle to different positions (e.g., 45 degrees, 90 degrees) depending on the shooting stance being used, transforming a static structure into a dynamic one that adapts to different operational requirements and eliminates wrist strain.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The grip is divided into separate segments: an upper grip portion and a lower grip portion that can rotate independently relative to each other. This segmentation allows the lower portion to be adjusted to different angles while the upper portion remains fixed to the firearm, enabling angle adjustment without increasing overall structural complexity.

Inventive Principle:

Principle #1Segmentation

2Object-affected harmful factors

If adjustable grips are added to correct ulnar deviation, then wrist fatigue is reduced, but the device becomes more complex and harder to manufacture

Engineering Contradiction:

Improvewrist fatigue and injuryVSAvoidgrip manufacturing difficulty

Core Design Contradiction:

Object-affected harmful factorsVSEase of manufacture

Solution Approach 1:

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The locking mechanism is designed to be simple and self-contained, using a cam and latch system that can be operated by the shooter's thumb or finger. The mechanism automatically locks into position when the lower grip portion is rotated to the desired angle, requiring minimal complexity while providing effective angle adjustment and elimination of wrist strain.

Inventive Principle:

Principle #25Self-service

3Adaptability or versatility

If the grip is made adjustable for different stances, then adaptability to various shooting positions is improved, but the adjustment mechanism increases device complexity

Engineering Contradiction:

Improveaccommodation of different shooting stancesVSAvoidadjustment mechanism complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The adjustable grip mechanism serves multiple functions: it provides angle adjustment for different stances, maintains a secure grip, and eliminates wrist strain. The same basic mechanism handles all these functions without requiring separate systems, demonstrating multi-functionality that increases adaptability while controlling complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

4Stability of the object's composition

If a locking mechanism is added to secure the grip at multiple angles, then grip stability is improved, but the mechanism becomes more complex

Engineering Contradiction:

Improvegrip angle stabilityVSAvoidlocking device complexity

Core Design Contradiction:

Stability of the object's compositionVSDevice complexity

Solution Approach 1:

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS9885538B2Adjustable ergonomic grip for a weapon

Publication Date: 2018.02.06 THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE NAVY

AI summary

A handgrip for a firearm is provided for ergonomic angular adjustment. The ergonomic adjustable handgrip illustratively includes an attachment to a firearm, an upper grip portion, and a lower grip portion. The lower grip portion can be released by a push button, adjusted to a user preferred angle relative to the upper grip portion, and locked into the angle by releasing the push button.