Window Hinge Safety Cable with Deformable Abutments
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Solution Overview
Problem
Existing window and door fitting systems with turn, tilt, and turn-tilt mechanisms lack a cost-effective and simple securing element that prevents the sash from falling out in case of hinge failure without impairing normal operation.
Innovation Solution
A securing element made of elastic material, such as plastic or metallic material coated with rubber, with thickened ends and plastically deformable abutment steps that reduce kinetic energy and provide positional fixation, allowing for easy assembly and space-saving design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a flexible cable is used as a security element, then the sash is secured against falling out, but the cable must be tightened using winding devices that occupy limited free space between sash and frame
Solution Approach 1:
The patent extracts the tightening function from complex winding devices and transfers it to the cable ends themselves. The cable ends are designed with enlargements that can be inserted into receptacles on the abutments, allowing the cable to be tightened and secured without requiring separate winding mechanisms. This simplifies the overall structure while maintaining the safety function.
Solution Approach 2:
The cable ends are designed to be self-tightening through their enlargement geometry. When the cable is pulled taut, the enlargements automatically engage with the receptacles and prevent further movement, creating a self-securing mechanism. This eliminates the need for active winding devices to maintain tension.
2Reliability
If the cable ends are made thicker to prevent passing through holes, then the cable becomes more secure, but the assembly complexity and manufacturing cost increase
Solution Approach 1:
The patent introduces receptacles on the abutments as intermediary components that receive the enlarged cable ends. These receptacles provide a standardized interface that simplifies both manufacturing and assembly. The cable ends with enlargements fit into these receptacles, creating a secure connection without requiring complex integration of thickened cable ends directly into the frame or sash.
3Object-affected harmful factors
If abutment steps are made plastically deformable to reduce kinetic energy, then the impact of hinge failure is reduced, but the manufacturing precision requirements increase
Solution Approach 1:
The patent changes the material parameter of the abutment steps from rigid to plastically deformable. This allows the steps to yield and deform under impact loads, absorbing kinetic energy through plastic deformation. The material selection and heat treatment processes are optimized to ensure controlled deformation characteristics while maintaining manufacturing feasibility.
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 effectively reduces the impact of hinge failure by gradually absorbing kinetic energy and providing resistance, ensuring the sash remains secured on the frame while maintaining normal operation functionality.
Implementation Method 1
the abutment steps can be plastically deformed when the element is acted upon and with sufficient kinetic energy, so that the abutment steps arranged at a distance one after the other result in a gradual reduction in the kinetic energy
Implementation Method 2
The element is preferably made of an elastic material, for example a plastic material or a metallic material
Implementation Method 3
The damping section, which can also be described as a damping section, reduces the impulse of the impact load
Data Source
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AI summary
The invention relates to a window or door with a hinge which forms turn axes, tilt axes, and/or tilt-turn axes (17) between casement (15) and frame (16), consisting of at least one operating rod guided on an overlapping rail, latching elements, locking parts, and/or at least one arrangement consisting of an opening stay for switching the hinge to differently operating axes (17), wherein at least one safety element (1) is provided on the turning axis side between casement (15) and frame (16), secured on this frame (16) and casement (15) in a manner resistant to being pulled out, wherein the safety element (1) has no function in the normal operation of the hinge, is effective outside of the permissible target positions of the casement (15) relative to the frame (16), and wherein a configuration resistant to being pulled out of a cord (2) is provided for the safety element (1), wherein the safety element (1) comprises an element (9) which is assigned to at least one casement side and one frame side abutment (3, 4) and wherein at least one abutment (3, 4) comprises a series of abutment steps (10) with predetermined breaking points, on which the element (9) is supported, lying in the direction of the effectively stressed element (9).