Rifle Stock Offset Device with Parallel Pivot Locking

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Solution Overview

Problem

Existing rifle stock adjustment systems are complex, requiring multiple fixing devices and resulting in misalignment and difficulty in setting, especially due to significant forces acting on locking screws, making adjustments cumbersome and inconvenient.

Innovation Solution

A setting device with parallel, pivotably mounted adjusting elements and a fixing device that includes a rotatable clamping piece, preventing unintentional adjustments by utilizing frictional force for secure locking, allowing for intuitive and effective single-fixation pivoting without external help.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If multiple fixing devices are used to adjust the rifle stock, then the adjustment can be secured, but the complexity of the device and the number of parts increase

Engineering Contradiction:
Improvesecuring of adjustmentVSAvoidnumber of fixing devices
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent combines multiple fixing functions into a single fixing device that simultaneously secures both adjusting elements. The fixing device includes a single fastening element that can lock both the first and second adjusting elements in their adjusted positions, eliminating the need for separate fixing devices for each element and reducing overall device complexity while maintaining reliable adjustment securing.

Inventive Principle:
Principle #5Merging (Combining)

2Reliability

If multiple locking screws are used to fix the adjusting elements, then the adjustment is secured, but the force required for adjustment increases and handling becomes difficult

Engineering Contradiction:
Improvelocking securityVSAvoidhandling of adjustment
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The patent merges multiple locking screws into a single fastening element that performs the locking function for both adjusting elements simultaneously. This single fastening element can be operated with one hand, significantly improving ease of operation while still providing secure locking of both adjusting elements in their adjusted positions.

Inventive Principle:
Principle #5Merging (Combining)

3Reliability

If individual fixing of multiple axles is required, then each axle can be secured, but the adjustment process becomes time-consuming and may result in misalignment

Engineering Contradiction:
Improvesecuring of each axleVSAvoidadjustment process time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The patent combines the fixing of multiple axles (first and second adjusting elements) into a single operational step. The fixing device is designed to simultaneously secure both adjusting elements when the fastening element is tightened, eliminating the need for sequential individual fixing and reducing the adjustment process time while preventing misalignment through simultaneous positioning.

Inventive Principle:
Principle #5Merging (Combining)

4Adaptability or versatility

If complicated attachments are used for adjustment, then more adjustment options are available, but the device becomes expensive and complex

Engineering Contradiction:
Improveadjustment optionsVSAvoidcomplexity of attachments
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent designs the fixing device with multi-functionality, where a single fixing device structure can accommodate and secure multiple types of adjusting elements. The fixing device includes a fastening element and retaining structure that can work with both the first and second adjusting elements, providing versatile adjustment options without requiring separate complicated attachments for each adjustment type.

Inventive Principle:
Principle #6Universality (Multi-functionality)

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

Enables secure, intuitive, and misalignment-free adjustments of the rifle stock, reducing the complexity and force required for setting, allowing shooters to make adjustments independently and efficiently.

Implementation Method 1

a relative movement of the adjusting elements to one another is prevented by the frictional force that occurs

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentEP2988087B1Offset device for a rifle stock and rifle with same
Publication Date: 2018.01.03 J G ANSCHUTZ GMBH
  • EP2988087B1 patent drawingFigure 1~2
  • EP2988087B1 patent drawingFigure 3~4
  • EP2988087B1 patent drawingFigure 5~6

AI summary

The invention relates to a settling device (1) for a rifle stock (2, 21, 22), wherein a first and a second adjusting element (31, 32) arranged parallel to each other are provided, each of which is pivotably mounted at its ends (31a, 31b, 32a, 32b) on a first and a second bearing block (41, 42) in mutually parallel bearing axes (41a, 41b, 42a, 42b), wherein a locking device (5) is provided which prevents movement of the adjusting elements (31, 32) relative to each other. The invention further relates to a rifle with such a settling device (1).