Sliding Door Threshold with Foam Base and Single-Walled Cover
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing ground sills for sliding doors, particularly those with hollow profiles, suffer from heat conduction issues due to materials with good thermal conductivity, and lack adaptability in installation situations.
Innovation Solution
A ground sill featuring a strip-shaped base body made of hard foam material with a single-walled cover that reduces heat flow through the sliding door track, allowing for better thermal insulation and easy height modification by using a multi-part design with different materials for varying load areas and incorporating an elastic sealant for moisture prevention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a hollow profile threshold is used, then structural strength is improved, but thermal insulation deteriorates due to heat conduction through the threshold
Solution Approach 1:
The threshold is divided into two functional parts: a hollow profile cover for structural strength and a separate rigid foam base body for thermal insulation. This segmentation allows each part to optimize its specific function without compromising the other, resolving the contradiction between strength and thermal insulation.
Solution Approach 2:
The threshold combines different materials with complementary properties: the hollow profile cover provides structural strength while the rigid foam base body provides thermal insulation. This composite structure eliminates the need to choose between strength and insulation, as both are achieved through material combination.
2Loss of energy
If a single-walled cover without hollow chambers is used, then thermal insulation is improved, but structural strength deteriorates
Solution Approach 1:
The cover is segmented into a single-walled thermal insulation layer and a separate hollow profile structural layer. The single-walled design provides thermal insulation while the hollow profile structure provides strength, eliminating the need to compromise between the two functions.
Solution Approach 2:
The cover combines a single-walled thermal insulation material with a hollow profile structural material. This composite construction allows the single-walled design to provide insulation while the hollow profile structure maintains strength, resolving the contradiction between insulation and structural integrity.
3Ease of manufacture
If the base body height is fixed, then manufacturing is simplified, but adaptability to different installation situations deteriorates
Solution Approach 1:
The base body height is made adjustable rather than fixed, allowing the threshold to adapt to different installation situations. The modular design with adjustable components enables the height to be modified while maintaining manufacturing simplicity through standardized connection elements.
Solution Approach 2:
The base body is segmented into modular components that can be adjusted in height. This segmentation allows for easy modification of the overall height to suit different installation requirements while maintaining manufacturing simplicity through standardized modular units.
4Adaptability or versatility
If multiple profiles are used for the cover, then adaptability and functionality are improved, but device complexity increases
Solution Approach 1:
The cover is segmented into multiple functional profiles (thermal insulation profile, structural profile, sealing profile). Each profile performs a specific function, and while there are multiple components, they are designed to be simple and modular, reducing overall complexity while improving adaptability.
Solution Approach 2:
Each profile is designed with multi-functionality where possible, and the profiles are universally compatible through standardized connection methods. This universality reduces the need for custom-designed components, simplifying the overall structure while maintaining functional adaptability.
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 provides enhanced thermal insulation and adaptability by minimizing heat conduction and preventing moisture ingress, while ensuring mechanical load transfer and easy installation adjustments.
Implementation Method 1
The base body is made of a rigid foam material... This reduces heat flow through the cover beneath the sliding door, as it is single-walled and without hollow chambers in the track area, thus providing better thermal insulation
Implementation Method 2
The cover can further comprise at least two profiles connected to each other via an elastic sealant, for example, an EPDM gasket. This provides a seal between two profiles
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A threshold (1) for a sliding door, in particular a lift-and-slide door, comprises a strip-shaped base body (2, 2') made of a rigid foam material, on the upper side of which a cover (3) with at least one track (42) for the sliding door is arranged, wherein the cover (3) is single-walled without hollow chambers at least in the area of the track (42) and fits snugly against the upper side of the base body (2, 2'). This allows the threshold to be adapted to the installation situation and to have high thermal insulation.