Composite Handle Profile for Thermally Insulated Doors
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Solution Overview
Problem
Existing door and window handle designs suffer from reduced thermal insulation due to the creation of thermal bridges and poor rigidity, leading to potential detachment and structural issues under actuation forces.
Innovation Solution
A heat-insulated composite handle profile with closed partial profiles connected by insulating bars, which enhances rigidity and includes features like a profile lock cylinder and integrated LEDs for illumination, ensuring the handle profile can withstand actuation forces and maintain thermal insulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a grip strip is embedded in insulating material with positive fit connection, then the handle can be securely attached to the wing, but the connection fails locally under high actuation forces and the grip strip becomes detached
Solution Approach 1:
The grip profile is divided into multiple closed partial profiles connected by insulating bars, creating a segmented structure that distributes actuation forces across multiple connection points rather than concentrating them at a single location, preventing local connection failure
Solution Approach 2:
The handle structure uses a composite design combining metal profiles for structural strength with insulating bars for thermal insulation and force distribution, creating a multi-material system that addresses both mechanical and thermal requirements
2Strength
If a metallic handle profile is inserted in the wing, then the handle provides structural support, but a thermal bridge is created affecting thermal insulation properties
Solution Approach 1:
The metallic handle profile is segmented into closed partial profiles connected by insulating bars, breaking the continuous thermal path while maintaining structural integrity through the distributed framework
Solution Approach 2:
Insulating bars are introduced as intermediary elements between metal profiles, serving dual functions of maintaining structural geometry and blocking thermal conduction paths through the handle assembly
3Ease of manufacture
If the grip profile is made as a simple single profile, then the manufacturing is simple, but the resistance to deformation is poor under actuation forces
Solution Approach 1:
The grip profile采用多个封闭的分 profiles 连接的结构，通过分段设计在保持制造工艺相对简单的前提下，利用多个封闭轮廓的协同作用显著提高整体抗变形能力
Solution Approach 2:
The closed partial profiles create a pre-reinforced structure that anticipates and resists deformation forces before they are applied, distributing stress throughout the framework rather than allowing localized bending
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 improved thermal insulation, increased resistance to deformation, and enhanced structural integrity by distributing actuation forces effectively, while also allowing for universal compatibility with different fillings and eliminating the need for additional lighting.
Implementation Method 1
heat-insulated composite profile, with the grip profile being made up of several closed partial profiles which are connected to one another by insulating bars
Data Source
AI summary
A door (1) or window with a wing frame (2) and a window frame (3), the wing frame (2) having wing frame bars (4, 5, 6, 7), the wing frame bars (4, 5, 6, 7) together with a filling (11) form a wing (12) and the wing (12) also has at least one grip profile (300), the grip profile (300) preferably being arranged parallel to one of the wing frame bars (4, 5, 6, 7). is characterized in that the handle profile (300) is designed as a thermally insulated composite profile. In addition, a door (1) is disclosed in which the handle profile (300) is fixed to the casement composite profile (100). Furthermore, a door (1) is disclosed in which the handle profile (300) has the same topology on its side facing the filling as the casement composite profile (100) on its side facing the filling.