Window Sill Mounting Device with Inclined Support and Retaining Element

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Solution Overview

Problem

Existing mounting methods for exterior window sills require high installation effort due to the need for securing the sill before mounting foam hardens, often using wedges or supports, to prevent lifting and maintain the required incline.

Innovation Solution

A mounting device with a support body having a rear contact surface and a lower contact surface at a predetermined angle, combined with a retaining element, securely holds the window sill in place during curing, allowing for easy and precise installation without additional supports.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If mounting foam or adhesive is applied to secure the exterior window sill, then the connection becomes firm and insulated, but the sill must be additionally secured with wedges or supports to prevent lifting during curing

Engineering Contradiction:
Improveconnection stabilityVSAvoidinstallation complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The mounting device is attached to the window frame before the exterior window sill is installed, creating a pre-positioned support structure. This preliminary action ensures that the sill is immediately supported at the correct angle and position, preventing lifting during foam curing without requiring additional wedges or supports.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The mounting device serves as an intermediary element between the window frame and the exterior window sill. It provides a stable interface that transfers loads and maintains positioning, eliminating the need for direct contact between the sill and frame while avoiding the need for additional securing elements.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Stability of the object's composition

If additional securing elements like wedges or supports are used to prevent sill lifting, then the sill remains stable during curing, but the installation effort increases significantly

Engineering Contradiction:
Improvesill position stabilityVSAvoidinstallation ease
Core Design Contradiction:
Stability of the object's compositionVSEase of operation

Solution Approach 1:

The mounting device combines multiple functions into a single element: it provides mechanical support, maintains the required inclination angle, and secures the sill during curing. This merging of functions eliminates the need for separate wedges or supports, reducing installation complexity while maintaining stability.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The mounting device is designed with a specific geometric configuration including a support surface inclined at a predetermined angle matching the desired sill inclination. This parameter-based design automatically ensures correct positioning and angle without requiring additional adjustment elements or complex installation procedures.

Inventive Principle:
Principle #35Parameter changes

3Reliability

If the exterior window sill is secured with multiple supporting elements, then lifting is prevented, but the installation time and effort increase

Engineering Contradiction:
Improveanti-lifting effectivenessVSAvoidinstallation speed
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The mounting device is pre-installed on the window frame before the sill is placed, creating a ready-to-use support structure. This preliminary preparation eliminates the need for time-consuming adjustments and additional securing operations during the main installation process, significantly improving installation speed.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The invention extracts the anti-lifting function from the set of additional securing elements (wedges, supports) and integrates it into the mounting device itself. This extraction eliminates the need for multiple separate elements, reducing both installation time and the number of components required.

Inventive Principle:
Principle #2Taking out (Extraction)

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 device ensures precise alignment and prevents lifting of the window sill during curing, enabling quick and easy installation and removal, while maintaining the desired incline without the need for additional securing elements.

Implementation Method 1

since the mounting foam expands during curing

Methodology Applied
Scientific EffectFoam expansion: Foam

Data Source

PatentEP4151822B1Mounting device for fitting an exterior window
Publication Date: 2025.10.22 R&R HEIDE GMBH
  • EP4151822B1 patent drawingFigure 1~2

AI summary

The invention relates to a mounting device (1) for mounting an exterior window sill (2) with a support body (6) which has a rear contact surface (8) for contact with an outer surface (9) of a window frame (4), a lower contact surface (11) inclined at a predetermined angle α relative to the rear contact surface (8) for contact with a top surface (12) of the exterior window sill (2) and a retaining element (13) for positive and/or force-fit retention of the support body (6) on the window frame (4).