Door Leaf End Cap Structure With Thermal Break Reinforcement
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Solution Overview
Problem
Conventional door systems face issues with heat transfer through U-profiles, leading to unwanted temperature changes and reduced U-value, while existing solutions with visible reinforcement plates and screws are costly and inefficient.
Innovation Solution
A door leaf design featuring a three-part end cap with a thermally insulating intermediate part that forms a thermal break, eliminating the need for visible screws and reducing heat transfer, and incorporating load-bearing members integrated into the end cap for structural support.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If U-profiles are used to reinforce the panel and provide finger protection, then the panel strength and safety are improved, but heat transfer occurs through the end cap leading to worsened U-value
Solution Approach 1:
The end cap is constructed as a composite structure with a first end cap part (metal), a third end cap part made of thermally insulating material, and a second end cap part (metal). This composite design allows the metal parts to provide structural strength while the insulating material barrier reduces heat transfer through the end cap, resolving the contradiction between strength and energy loss.
2Strength
If screws or bolts are used to connect reinforcement plates, then the panel reinforcement is improved, but the manufacturing cost increases and the appearance is compromised by visible fasteners
Solution Approach 1:
The reinforcement function is merged into the end cap structure itself. The end cap parts directly reinforce the panel edges and provide finger protection without requiring separate reinforcement plates and fasteners. This integration eliminates visible screws/bolts and reduces manufacturing complexity while maintaining the necessary structural strength.
3Weight of moving object
If the shell is made of thin steel sheet or aluminum, then the door weight is reduced, but the shell requires reinforcement to support load bearing parts
Solution Approach 1:
The shell structure is segmented into the thin-walled panel body (for low weight) and the end cap components (for reinforcement). The end cap parts are strategically positioned at the panel edges to provide localized reinforcement for mounting load-bearing parts, while the main panel body remains thin to minimize weight. This segmentation allows the thin shell to achieve sufficient strength where needed without increasing overall weight.
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
Enhances thermal resistance and reduces manufacturing costs by minimizing heat transfer and eliminating the need for visible reinforcement, while maintaining structural integrity and ease of assembly.
Implementation Method 1
a third end cap part (223) in a thermally insulating material connecting said first end cap part (221) and said second end cap part (222)
Data Source
Figure 1~2a
Figure 2b~2c
Figure 3a~3b
AI summary
Present invention relates to a panel arrangement (100, 200) for a door leaf (20) formed by one or more panel arrangements (100, 200). The panel arrangement (100, 200) comprising a panel (110, 210) having a first and second main surface, the second 5 surface being opposite to the first and the first and second main surface, the panel (110, 210) further having transversal sides interconnecting the first and second main surface, one or more end caps (120, 220) each wrapping around one of the transversal sides of the panel (110, 210). The end cap (120, 220) comprises a first end cap part (121, 221) and a second end cap part (122, 222), the first end cap part (121, 221) extending along a 0 portion of the first main surface of the panel (110, 210) and the second end cap part (122, 222) extends along a portion of the second main surface of the panel. The end cap (120, 220) further comprises a third end cap part (123, 223) in a thermally insulating material connecting the first and second end cap part (121, 122, 221, 222).