Sliding Door Frame Construction with Insulating Body

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Solution Overview

Problem

Existing frame constructions for sliding doors and windows suffer from cold bridges, water condensation, and high production and installation costs due to continuous designs and complex configurations, which limit thermal insulation and increase manufacturing expenses.

Innovation Solution

A three-part frame design with completely separated outer and inner frame parts, an insulating body, and central frame parts, featuring inner sealing elements and a brush-like sealing mechanism to prevent cold bridges, combined with glass-reinforced profiles for secure and watertight connections to glass panels, allowing for rear ventilation and optimized thermal insulation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If a continuous main frame design is used, then structural simplicity and ease of manufacture are improved, but thermal insulation deteriorates due to cold bridges

Engineering Contradiction:
Improveease of manufactureVSAvoidthermal insulation
Core Design Contradiction:
Ease of manufactureVSTemperature

Solution Approach 1:

The main frame is divided into outer frame part and inner frame part that are completely separated by an insulating body, eliminating the continuous thermal bridge while maintaining structural integrity. This segmentation allows each part to be manufactured separately and assembled, preserving ease of manufacture while improving thermal insulation.

Inventive Principle:
Principle #1Segmentation

2Temperature

If a two-part main frame with insulating body is used, then thermal insulation is improved, but water condensation occurs at protruding limbs

Engineering Contradiction:
Improvethermal insulationVSAvoidwater condensation
Core Design Contradiction:
TemperatureVSObject-affected harmful factors

Solution Approach 1:

The insulating body acts as an intermediary between the outer and inner frame parts, completely separating them to prevent cold bridges. By eliminating the thermal bridge at the protruding limbs, the insulating body prevents the temperature differential that causes water condensation, thus resolving the harmful effect while maintaining thermal insulation.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Stability of the object's composition

If L-shaped inner frame is used, then structural stability is improved, but free window surface area is reduced

Engineering Contradiction:
Improvestructural stabilityVSAvoidfree window surface
Core Design Contradiction:
Stability of the object's compositionVSArea of stationary object

Solution Approach 1:

The frame construction transitions from an L-shaped cross-section to a three-dimensional configuration where the insulating body and sealing elements are positioned in the space between the outer and inner frame parts. This dimensional change allows the frame to maintain structural stability without the L-shaped profile extending into the window opening, thereby maximizing the free window surface area.

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

4Adaptability or versatility

If differently constructed sides are used, then adaptability to different conditions is improved, but production cost and installation complexity increase

Engineering Contradiction:
ImproveadaptabilityVSAvoidinstallation complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The frame construction employs identical outer frame parts and inner frame parts that can be used on all four sides of the window or door. This universal design allows the same components to serve multiple functions and positions, simplifying production through standardized manufacturing and reducing installation complexity through repetitive assembly, while still providing the necessary thermal insulation and structural stability.

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

The solution effectively eliminates cold bridges, minimizes water condensation, maximizes free window area, reduces production and installation costs, and ensures long-lasting, secure, and watertight connections between glass panels and frames, enhancing thermal insulation and ease of assembly.

Implementation Method 1

the first, outer frame part and the second, inner frame part being completely separated from each other at least along the guideway of the running carriage by means of an insulating body

Methodology Applied
Scientific EffectThermal insulation: Thermal Insulation

Implementation Method 2

inner sealing elements bear in a sliding manner between a holding profile for a door wing or window sash and the insulating body or a central frame part

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentUS7520093B2Frame construction of a sliding door
Publication Date: 2009.04.21 BEAT GUHL
  • US7520093B2 patent drawing
  • US7520093B2 patent drawing
  • US7520093B2 patent drawing

AI summary

A frame construction of a sliding door or a sliding window has a main frame, a displaceable running carriage (4) for holding a displaceable door wing (T) or window sash, holding profiles (5) for holding the door wings (F, T) or window sashes, outer sealing elements (8) which bear in a sliding manner between the holding profiles (5) and an outer region of the main frame, and inner sealing elements (8′) which bear in a sliding manner between the holding profiles (5) and an inner region of the main frame. There is furthermore an insulating body (7) which divides the main frame into an outer and an inner frame part (1, 2) and completely separates these parts from each other. The inner sealing element (8′) bears against the insulating body (7) or against a central frame part (3) of the main frame, the central frame part (3) being completely separated from the first and second frame parts (1, 2). The frame construction has improved heat insulation, is nevertheless of relatively narrow design and can be produced cost-effectively through the use of individual parts which are as symmetrical as possible.