V-Shaped Door Stopper Branches for Variable Gap Handling
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Solution Overview
Problem
Existing door and window stoppers face difficulties in handling large gaps between doors or windows and their frames, leading to increased production complexity and material expenditure, while also being less effective with small gaps.
Innovation Solution
A door and window stopper with a V-shaped design featuring diverging branches connected to a coupling body, providing high flexibility and adjustable pretension through a clearance between the branches, allowing for reliable stopping across a range of gap sizes with minimal material use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the stopper is dimensioned larger to bridge large gaps, then the handling capability for large gaps is improved, but the production complexity and material expenditure increase
Solution Approach 1:
The stopper is divided into two separate branches that can be inserted into the gap independently, allowing the stopper to accommodate large gaps without requiring a single large-dimensional component. Each branch can be manufactured separately and then assembled, reducing production complexity while maintaining the ability to handle large gaps effectively
Solution Approach 2:
The branches are designed to be movable relative to each other, allowing them to adapt to different gap sizes dynamically. The branches can be positioned at different angles and distances apart, enabling the stopper to handle both large and small gaps with a single device, thereby avoiding the need for multiple specialized stoppers
2Ease of operation
If the stopper is dimensioned larger to bridge large gaps, then the handling capability for large gaps is improved, but the material expenditure increases
Solution Approach 1:
By segmenting the stopper into two separate branches, the material usage is optimized. Each branch can be manufactured with minimal material thickness while still providing sufficient structural integrity and gap-spanning capability. This segmentation allows for reduced material expenditure compared to manufacturing a single large-dimensional stopper body
Solution Approach 2:
The branches are designed with thin-walled structures that provide sufficient flexibility and gap-spanning capability without requiring thick material. The thin-walled design reduces material expenditure while maintaining the necessary mechanical properties for handling large gaps, as the flexibility allows the branches to bend and adapt to the gap geometry
3Ease of operation
If the stopper is dimensioned larger to bridge large gaps, then the handling capability for large gaps is improved, but the weight increases
Solution Approach 1:
Segmenting the stopper into two separate branches allows each branch to be lightweight while maintaining overall functionality. The distributed mass of two lighter branches is preferable to a single heavy stopper body, improving handling characteristics while maintaining the capability to bridge large gaps
Solution Approach 2:
The thin-walled design of the branches reduces the weight of the stopper while maintaining sufficient structural integrity. The flexible thin-walled construction allows the stopper to bend and adapt to gap geometry without requiring heavy material, thereby reducing weight while preserving handling capability for large gaps
4Ease of operation
If the stopper uses more material to handle large gaps, then the handling capability for large gaps is improved, but the flexibility decreases
Solution Approach 1:
The thin-walled design of the branches provides high flexibility while maintaining the capability to handle large gaps. The thin-walled construction allows the branches to bend and flex easily, enabling them to adapt to different gap sizes and geometries without requiring excessive material that would reduce flexibility
Solution Approach 2:
The movable connection between the branches allows them to dynamically adjust their relative positions and angles, providing adaptability to different gap configurations. This dynamic capability enables the stopper to handle both large and small gaps with high flexibility, as the branches can reposition themselves to match the gap geometry
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
Enables functional and reliable stopping of doors and windows with large or small gaps, maintaining low production complexity and material expenditure, while allowing for easy adjustment of pretension for optimal performance.
Implementation Method 1
The branches are, in particular, preferably designed to be conically tapered toward the tips, wherein a clearance is present between the inner surfaces of the two branches. The branches are advantageously designed to be concave/convex and/or, toward the tips thereof, they extend in opposite directions away from each other to the side and/or to the outside.
Implementation Method 2
The stopper comprises an outer part made of rubber or a flexible rubber-like thermoplastic material having a relatively high friction coefficient
Data Source
AI summary
A door and/or window stopper includes two branches each having a contour tapering toward a tip and further includes a coupling body, which is at least partially made of rubber or a flexible, rubber-like thermoplastic material or elastomer, wherein at least outer surfaces of the branches have a relatively high friction coefficient. The two branches have inner surfaces, which are connected to each other in a connecting region and extend away from each other outward to tips of the branches. The two branches are connected to each other by way of a connecting body and disposed in a V-shaped manner. Proceeding from the respective tips, the outer surfaces of the branches extend at decreasing distances toward the coupling body.