Integrated Rifle Stock Adjusting Device with Nested Locking
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Solution Overview
Problem
Existing adjusting mechanisms for rifle stocks require a separate knob, increasing manufacturing and retrofitting costs, are susceptible to wear and dirt, and compromise ergonomics and aesthetics.
Innovation Solution
An integrated adjusting device with a pivotally movable portion and biasing mechanism that eliminates the need for a separate knob, providing a more robust, secure, and ergonomic solution with reduced play and risk of unwanted release.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a separate adjusting knob is used, then the adjusting mechanism can be implemented, but the manufacturing cost increases and the device complexity increases
Solution Approach 1:
The adjusting portion is integrated directly into the rest assembly, eliminating the need for a separate adjusting knob. The adjusting portion comprises locking devices that directly engage with the stock, merging the adjustment function with the rest structure itself, thereby reducing part count and manufacturing cost while simplifying the overall device.
2Productivity
If a separate adjusting knob is used, then the adjusting mechanism can be implemented, but the manufacturing time and retrofitting time increase
Solution Approach 1:
The integrated adjusting portion is designed as a single assembly unit with the rest, allowing it to be manufactured as one piece or pre-assembled unit. This reduces manufacturing steps and facilitates quicker retrofitting, as the entire adjusting mechanism can be installed by mounting the rest assembly without separate knob installation.
3Reliability
If a protruding adjusting knob is used, then the adjusting mechanism can be implemented, but the reliability decreases due to exposure to elements and wear
Solution Approach 1:
The locking devices of the adjusting portion are nested within openings in the stock rather than protruding outward. The adjusting portion rotates within the stock body, with locking surfaces engaging inside the stock material. This nested configuration protects the adjusting mechanism from environmental exposure and physical damage while maintaining full adjustment functionality through internal rotation and locking engagement.
4Shape
If a protruding adjusting knob is used, then the adjusting mechanism can be implemented, but the rifle stock appearance is compromised and ergonomics are impaired
Solution Approach 1:
The adjusting mechanism is nested within the stock contours, allowing the external surface of the stock to remain smooth and uninterrupted. The adjusting portion rotates inside the stock body, enabling ergonomic hand placement and operation without protruding elements that would disrupt the stock's aesthetic lines or create uncomfortable contact points for the shooter's hand and cheek.
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 solution reduces manufacturing and retrofitting costs, enhances durability and resistance to dirt, improves ergonomics, and maintains a clean, visually appealing design while ensuring secure adjustments during recoil.
Implementation Method 1
a biasing device is adapted to force the adjusting portion towards the locking position
Data Source
Figure 1~2
Figure 3a~3c
Figure 4a~4c
AI summary
Adjusting device (1) for an adjustable rest (2, 2a, 2b) for a rifle stock (3), comprising: a first portion (4) adapted to be fixedly arranged to the rifle stock (3), an adjusting portion (5) adapted to be releasably engaged with the first portion (4) and movable between an engaged, locking position and a disengaged, release position upon actuation of the adjusting portion (5), wherein the adjusting portion (5) is adjustable in relation to the first portion (4) in a release position, and wherein the adjusting portion is locked in relation to the first portion (4) in the locking position, wherein the adjusting portion (5) is adapted to be fixedly arranged to the adjustable rest (2, 2a, 2b).