Safety Switching Profile with Diagonal Struts for Lateral Force Triggering
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing safety switching profiles for power-operated systems, such as roller shutters and motor vehicles, fail to trigger reliably under lateral or oblique forces, posing a risk of injury, especially for children, as they do not provide sufficient release safety when subjected to side or angled forces.
Innovation Solution
The safety switching profile features a control chamber with diagonally arranged strip-shaped struts and reinforcement strips, along with an electrically conductive switching element that occupies the entire inner wall, and strategically placed thickenings and notches to ensure rapid triggering and prevent buckling, allowing forces to be effectively transmitted and triggering a switching pulse even under lateral or oblique actions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the switching chamber is designed as a hollow chamber with a sealing strip, then the profile allows large trailing distance and is suitable for high movement speeds, but it fails to trigger reliably when lateral or oblique forces act on the switching profile
Solution Approach 1:
The switching chamber is divided into multiple compartments by partition walls, creating multiple buttons that can be independently activated. This segmentation allows the structure to respond to forces from different directions (vertical, lateral, oblique) through different buttons, improving triggering reliability while maintaining the hollow chamber structure needed for high-speed operation
Solution Approach 2:
Different regions of the switching chamber are designed with different properties: the partition walls create localized buttons with specific response characteristics, while the overall hollow chamber structure maintains the flexibility needed for high-speed trailing. The sealing strip is positioned at specific corners to provide localized sealing while allowing the rest of the structure to deform appropriately under various loading conditions
2Speed
If the deformation zone is designed with triangular empty chambers, then the profile is suitable for high movement speeds, but it does not offer sufficient release safety for forces acting from the side
Solution Approach 1:
The deformation zone is segmented into multiple triangular empty chambers that can deform independently under lateral forces. This segmentation ensures that when side forces act on the profile, at least one chamber will deform sufficiently to trigger the switching pulse, providing release safety while maintaining the overall structural integrity needed for high-speed operation
Solution Approach 2:
The triangular empty chambers are arranged in a configuration that provides deformation capability in multiple dimensions. The chambers can deform not only in the vertical direction but also in lateral directions, ensuring that forces from any direction can trigger the safety mechanism while maintaining compatibility with high-speed movement requirements
3Ease of manufacture
If the buttons are designed as strip-shaped switching elements, then the switching chamber can be extruded in one piece, but lateral buckling may occur reducing switching capability
Solution Approach 1:
The strip-shaped switching elements are divided into multiple segments by the partition walls, creating separate buttons within the switching chamber. This segmentation prevents lateral buckling from affecting the entire strip, as each button is isolated and can maintain its switching capability independently, while the overall structure remains suitable for extrusion manufacturing
Solution Approach 2:
The buttons are designed with curved or rounded features rather than sharp corners, which helps distribute stress more evenly and reduces the likelihood of lateral buckling. The curved geometry maintains the extrusion-friendly continuous structure while improving resistance to buckling under lateral loads, ensuring reliable switching capability
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
This configuration ensures rapid and reliable triggering of the switching pulse with low forces, reducing the risk of buckling and enhancing safety by effectively handling vertical, lateral, or oblique forces, thereby preventing injuries from side or angled impacts.
Implementation Method 1
two diagonally arranged strip-shaped struts that intersect in the shape of a cross. The strip-shaped struts start from the corners of the control chamber and end at the opposite corners. This configuration ensures that a targeted force is exerted on the switching chamber both in the case of a vertical action of force and in the case of lateral or oblique forces
Implementation Method 2
the buttons are designed as strip-shaped switching elements, which are electrically conductive, in particular by adding conductive materials, and which are attached to the opposite walls of the switching chamber
Implementation Method 3
the side walls of the control chamber, preferably on the inside, have reinforcement strips starting from the corners where the struts engage, with the reinforcement strips starting from the corner facing away from the switching chamber covering more than half, preferably two thirds
Data Source
Figure 1
Figure 2
AI summary
The profile has a hollow section made of an elastomer material and a switching chamber (3) with a switching surface arranged at oppositely arranged walls. A backlash chamber is formed as a control chamber and comprises two diagonally arranged lamellar braces (12), where the braces are cut crosswisely. The switching and control chambers have rectangular cross sections with the same width.