Guide Rail Fastening Element With Adjustable Screws

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Solution Overview

Problem

Existing fastening systems for guide rails, particularly in wet environments like showers, face challenges in achieving precise alignment and horizontal leveling due to imprecise drilling in ceramic tiles, leading to misalignment and increased friction in sliding door operations.

Innovation Solution

A fastening element with a flat support plate and adjustable screws allows for vertical height adjustment and horizontal alignment of the guide rail, featuring a bolt for centering and a clamping mechanism using a slot nut to secure the guide rail in place, ensuring accurate positioning and preventing lateral movement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If fastening elements are fastened to ceramic tiles with high accuracy, then the guide rail can be precisely aligned horizontally, but drilling in hard ceramic tiles is difficult and the drill tip often shifts from the marked center

Engineering Contradiction:
Improvealignment precisionVSAvoidfastening installation difficulty
Core Design Contradiction:
Manufacturing precisionVSEase of manufacture

Solution Approach 1:

The fastening element is pre-assembled with the guide rail before installation, allowing the guide rail to be precisely positioned and aligned on the fastening element prior to mounting on the wall. This preliminary assembly enables accurate alignment to be achieved without requiring precise drilling of the ceramic tiles, as the alignment is established during the pre-assembly phase rather than during the final installation phase.

Inventive Principle:
Principle #10Preliminary action

2Ease of operation

If the guide rail is fastened with imprecise alignment due to drilling errors, then the installation process is simpler, but the guide rail does not lie exactly horizontally and causes poor running and high friction

Engineering Contradiction:
Improveinstallation easeVSAvoidsliding door operation reliability
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The fastening element incorporates adjustable components that allow the guide rail to be dynamically adjusted to the correct horizontal position after installation. This dynamic adjustment capability compensates for any initial alignment errors made during drilling, enabling the guide rail to achieve proper horizontal alignment even when the fastening elements were not precisely positioned during installation, thus maintaining reliable sliding door operation.

Inventive Principle:
Principle #15Dynamics

3Manufacturing precision

If adjustable mechanisms are added to the fastening element, then the guide rail can be precisely aligned and leveled, but the device complexity increases

Engineering Contradiction:
Improvealignment precisionVSAvoidfastening element complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The fastening element is divided into functionally independent segments: a mounting portion for attachment to the wall, a support portion for supporting the guide rail, and adjustment mechanisms for horizontal and vertical alignment. This segmentation allows each component to perform its specific function efficiently, reducing overall complexity by avoiding the need for a single complex integrated structure.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The adjustment mechanisms operate in different spatial dimensions: vertical adjustment screws for height adjustment and horizontal adjustment screws for leveling. By separating the adjustment functions into different dimensional directions, the design achieves precise alignment in both vertical and horizontal planes without requiring a single complex multi-directional adjustment mechanism.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Data Source

PatentEP2476843B1Fixing element for frontal fixing of a guide rail
Publication Date: 2017.01.04 HAWA SLIDING SOLUTIONS AG
  • EP2476843B1 patent drawing
  • EP2476843B1 patent drawing
  • EP2476843B1 patent drawing

AI summary

The fixing element (7) has a mounting plate with holes for passage of fixing screws into the walls. A supporting plate is arranged perpendicular to a fixing plate. Two adjusting screws (17) are vertically adjustably guided on the support plate spaced from the surface of a mounting plate.