Wedging Door Rail Assembly for Variable Glass Panel Thickness

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Solution Overview

Problem

Existing door rail systems face challenges in efficiently accommodating varying doorway widths, panel thicknesses, and angular adjustments, while also requiring complex and permanent attachment methods that hinder easy replacement or repair.

Innovation Solution

A door rail system featuring a core rail with a clamping channel, clamping rails, and pulling rails, allowing for adjustable panel thicknesses and angular adjustments, with modular side covers and concealed hardware, and a mechanism for easy attachment and detachment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If structural adhesives are used to attach rails to glass panels, then the attachment is strong and secure, but the rail cannot be removed for replacement or repair

Engineering Contradiction:
Improveattachment strengthVSAvoidrail replaceability
Core Design Contradiction:
StrengthVSEase of repair

Solution Approach 1:

The attachment system is divided into separate components: a rail body and a removable cover assembly that can be detached and reattached. This segmentation allows the rail to be removed and replaced without damaging the glass panel, while still providing strong attachment when assembled. The cover assembly acts as an intermediary that maintains the strong bond while enabling replacement.

Inventive Principle:
Principle #1Segmentation

2Stability of the object's composition

If a fixed rail system is used, then the structure is simple and stable, but it cannot accommodate varying doorway widths or panel thicknesses

Engineering Contradiction:
Improvestructural stabilityVSAvoidaccommodation of varying dimensions
Core Design Contradiction:
Stability of the object's compositionVSAdaptability or versatility

Solution Approach 1:

The rail system incorporates adjustable elements including a movable cover assembly that can be repositioned along the rail body, and adjustable clamping mechanisms that can accommodate different panel thicknesses. This dynamic adjustability allows the same rail structure to adapt to varying doorway widths and panel dimensions while maintaining structural stability when installed.

Inventive Principle:
Principle #15Dynamics

3Adaptability or versatility

If multiple components are used to accommodate varying dimensions, then adaptability is improved, but device complexity increases

Engineering Contradiction:
Improveaccommodation of varying dimensionsVSAvoidnumber of components
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The rail body is designed as a universal component that can work with various cover assemblies and adjustment mechanisms. The cover assembly serves multiple functions: it provides the attachment interface to the glass panel, enables adjustment of the rail position, and allows for easy removal and replacement. This multi-functionality reduces the need for entirely different components for different applications.

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

4Ease of manufacture

If modular side covers are used, then ease of installation and aesthetic flexibility are improved, but the attachment mechanism becomes more complex

Engineering Contradiction:
Improveease of installationVSAvoidattachment mechanism complexity
Core Design Contradiction:
Ease of manufactureVSDevice complexity

Solution Approach 1:

The cover assembly is pre-assembled with the attachment mechanisms and adjustment components before installation. This preliminary assembly simplifies the installation process, as the entire adjustable assembly can be installed as a single unit and then adjusted in place. The complex mechanisms are pre-configured, reducing the complexity of the installation process even though the attachment mechanism itself is sophisticated.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentEP3940165B1Improved door rail system
Publication Date: 2025.09.24 C R LAURENCE COMPANY INC
  • EP3940165B1 patent drawingFigure 1A
  • EP3940165B1 patent drawingFigure 1B~1C
  • EP3940165B1 patent drawingFigure 1D~1E

AI summary

An improved door rail system for holding a panel, such as a glass panel, is presented. The door rail system includes a core rail and clamping rails having a wedging geometry so that when the clamping rails are actuated with respect to the core rail, clamping force is applied to the glass panel to secure the panel within the core rail. The improved door rail system accommodates panels of varying thickness, features the use of modular side covers and incorporates a door to door jamb adjustment device allowing for angular adjustments.