Rail Clamp Mount With Elastic Cam Actuation

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Solution Overview

Problem

Existing rail clamp mounts for accessory devices on guns lack a secure and quick attachment/release mechanism that can effectively engage wedge-shaped surfaces of longitudinal rails, such as Picatinny rails, while being easy to use and adaptable to various rail configurations.

Innovation Solution

A rail clamp mount apparatus featuring a U-shaped clamping member with elastic properties, a cam mechanism, and an actuator handle that allows for easy engagement and disengagement of the clamp with the rail, utilizing V-shaped surfaces to securely attach to the rail's wedge-shaped surfaces, ensuring firm clamping and easy release.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a single cam operated attachment device is used, then the device can attach to the rail, but it cannot provide secure engagement on both sides of the rail simultaneously

Engineering Contradiction:
Improvesecure engagementVSAvoiddual-sided clamping structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The clamping device is divided into two separate clamping members (first and second clamping members) that independently engage with the first and second sides of the rail respectively. Each clamping member has its own cam mechanism, allowing independent adjustment and secure engagement on both sides of the rail without requiring a complex integrated structure.

Inventive Principle:
Principle #1Segmentation

2Reliability

If a firm clamping mechanism is used to securely attach the rail clamp mount to the rail, then the attachment is secure, but the attachment and release process becomes time-consuming

Engineering Contradiction:
Improvefirm attachmentVSAvoidattachment and release time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The cam mechanisms in both clamping members are designed to be actuated by periodic rotational motion of the actuator handle. A single continuous rotation of the handle simultaneously actuates both cam mechanisms, enabling both clamping members to engage or disengage from the rail in one quick motion, thus reducing attachment and release time while maintaining firm attachment.

Inventive Principle:
Principle #19Periodic action

3Adaptability or versatility

If the clamping member is made elastic to accommodate rail variations, then adaptability improves, but the clamping force and firmness may be reduced

Engineering Contradiction:
Improveaccommodation of rail configurationsVSAvoidclamping force
Core Design Contradiction:
Adaptability or versatilityVSStrength

Solution Approach 1:

The clamping members are made of elastic material that can deform to accommodate variations in rail dimensions and configurations. The elasticity allows the clamping members to conform to different rail profiles while the cam mechanisms provide sufficient mechanical force to ensure firm engagement. The elastic property enables adaptation without sacrificing clamping force, as the material deforms elastically rather than permanently.

Inventive Principle:
Principle #35Parameter changes

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 apparatus provides a secure and quick attachment/release mechanism for accessory devices on guns, accommodating various rail configurations, including Picatinny rails, with self-adjusting capabilities and ambidextrous operation, ensuring reliable and easy use.

Implementation Method 1

a cam mechanism comprising a circular member or disk rotatably residing in the clamping member adjacent to said second side of said longitudinal rail for imparting transverse movement to said clamping member when actuated

Methodology Applied
Scientific EffectCam mechanism: Cam

Implementation Method 2

The clamping member is preferably somewhat elastic, and includes a center section between the legs and extending from the base section of the U

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentEP2109749B1Rail clamp mount
Publication Date: 2014.04.02 SUREFIRE LLC
  • EP2109749B1 patent drawingFigure 1~2
  • EP2109749B1 patent drawingFigure 3~11
  • EP2109749B1 patent drawingFigure 12~14

AI summary

A rail clamp mount that may be quickly and easily firmly secured to a rail, such as a rail carried by a gun, and that may be quickly and easily released from the rail. A preferred embodiment comprises a mount base including a first rail-engaging surface; a generally U-shaped, somewhat elastic clamping member carried by the mount base and including two second rail-engaging surfaces at the ends of the legs of the U, and a third second rail-engaging surface at the end of the center section of the clamping member between the legs of the U, the second rail-engaging surfaces being opposed to and transversely spaced from the first rail-engaging surface; a cam mechanism mounting the clamping member to the mount base for imparting transverse movement to the clamping member when actuated; and an actuator for the cam mechanism including a throw handle.