Door Gap Covering Device with Localized Stabilizing Means
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Solution Overview
Problem
Existing devices for covering the gap between a door leaf and a door frame do not adequately address finger protection on the secondary closing edge, as they either lack sufficient mechanical stability or compromise windability.
Innovation Solution
A device comprising a flexible web material with a stabilizing agent, where the stabilizing agent increases mechanical stability in a designated area, preventing deformation and finger insertion, while allowing easy winding and covering the gap effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a flexible web material is used to cover the gap, then the device is easy to wind and install, but the mechanical stability is insufficient to prevent finger insertion
Solution Approach 1:
The patent applies local quality by introducing a stabilizing means only in the stabilizing region where mechanical strength is needed to prevent finger insertion, while the rest of the web material remains flexible for easy winding. This localized reinforcement resolves the contradiction by providing stability exactly where required without compromising the overall flexibility and windability of the device.
Solution Approach 2:
The patent uses composite materials by combining the flexible web material with a stabilizing means (such as a rigid profile or reinforcement element) to create a composite structure. This composite construction provides both the flexibility needed for winding and the mechanical stability needed to prevent finger insertion, resolving the contradiction between these two properties.
2Reliability
If the web material is made more rigid to prevent deformation, then finger protection is improved, but the ease of winding and installation is reduced
Solution Approach 1:
The patent applies local quality by making the web material rigid only in the stabilizing region where finger protection is needed, while keeping the rest of the material flexible for easy winding. This localized rigidity provides reliable finger protection without compromising the ease of winding and installation.
Solution Approach 2:
The patent segments the web material into different functional regions: a stabilizing region with rigid properties for finger protection, and a non-stabilizing region with flexible properties for winding. This segmentation allows each region to have optimized properties for its specific function, resolving the contradiction between rigidity for protection and flexibility for ease of operation.
3Reliability
If a stabilizing means is added to increase mechanical stability, then finger protection is improved, but the device complexity increases
Solution Approach 1:
The patent applies local quality by adding a stabilizing means only in the necessary stabilizing region rather than throughout the entire web material. This localized approach provides the required mechanical stability while minimizing the increase in device complexity by keeping the stabilizing means confined to only the area where it is needed.
Solution Approach 2:
The patent uses flexible shells and thin films by employing a thin stabilizing profile or reinforcement element that can be integrated into the web material structure. This approach provides mechanical stability while maintaining simplicity and avoiding excessive complexity, as the stabilizing means is implemented as a thin, integrated component rather than a complex separate structure.
Data Source
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AI summary
The invention relates to a device (100; 400; 600; 800) for covering a gap between a door leaf and a door frame, comprising a covering means (101) and a stabilizing means (103; 401; 601; 801), wherein the covering means (101) comprises a rollable web material with a first end (104) and a second end (105), wherein the first end (104) is arranged opposite the second end (105), wherein the covering means (101) is configured to be attached with the first end (104) to the door leaf (1000) and with the second end (105) to the door frame (1001), such that the web material covers a gap between the door leaf (1000) and the door frame (1001), wherein a longitudinal axis of the gap runs parallel to a longitudinal axis of the door leaf (1000), wherein the Stabilizing means (103; 401; 601; 801) is arranged on the covering means (101) in a stabilizing area, wherein the stabilizing means (103; 401; 601;801) increases the mechanical stability of the device (100; 400; 600; 800) in the stabilization range.;