Door Fitting Elastic Retaining Element Assembly
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Solution Overview
Problem
Existing door fittings face challenges in easy assembly and disassembly of panels without damage, due to complex installation processes and tolerance compensation issues.
Innovation Solution
A door fitting design featuring an external panel with an inner connecting element and elastic holding element, where the connecting element can be moved into two positions within a receptacle, ensuring a high holding force with minimal assembly effort and allowing non-destructive detachment, using a receptacle with distinct pre- and end-positions and differing movement directions for assembly and disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a panel is attached to a carrier element using conventional methods, then the panel can be secured to the carrier element, but the installation process becomes very complicated and requires significant assembly effort
Solution Approach 1:
The connecting element is divided into two functional segments: a insertion direction for easy assembly and a retention direction for secure holding. The elastic holding element is segmented to provide different functions in different directions, enabling simple assembly while maintaining strong retention.
Solution Approach 2:
The elastic holding element is designed to be dynamically responsive, deforming elastically during insertion and then providing constant retention force. The connecting element can move between pre-position and end position, allowing the system to adapt during assembly while maintaining stability during operation.
2Reliability
If conventional attachment methods are used, then the panel can be secured to the carrier element, but the panel cannot be detached without being destroyed
Solution Approach 1:
The elastic holding element provides dynamic retention that can be overcome by applying force in the insertion direction. The element deforms elastically during detachment, allowing the panel to be removed without damage while maintaining strong holding force during normal operation.
Solution Approach 2:
The holding element's physical state changes from compressed during insertion to relaxed during detachment. This parameter change allows the same element to provide strong retention during operation while enabling easy, non-destructive removal when needed.
3Manufacturing precision
If additional tolerances on components are compensated, then the panel can be attached to the carrier element, but the installation process becomes more complex
Solution Approach 1:
The elastic holding element's deformability allows it to accommodate dimensional variations and tolerances in the connecting element and receptacle. This parameter change capability simplifies the installation process by eliminating the need for complex tolerance compensation mechanisms.
Solution Approach 2:
The elastic holding element automatically adapts to tolerance variations in the connecting element and receptacle through its elastic deformation. This self-adjusting mechanism eliminates the need for additional tolerance compensation steps, simplifying the overall installation process.
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 simplifies assembly and disassembly, ensures a strong hold without damaging the panel, and allows for easy replacement of the holding element, providing a durable and cost-effective door fitting with improved ease of use.
Implementation Method 1
The connecting element serves as a support for the holding element, which deforms elastically and/or compresses itself during installation in the receptacle of the support element
Data Source
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AI summary
The invention relates to a door fitting (1) with an external cover (10) which is attached to a support element (30), wherein the cover (10) has an inner side (11) which faces the support element (30) and the inner side (11) has at least one connecting element (20) on which an elastic retaining element (21) is arranged, wherein the retaining element (21) is held in a receptacle (31) of the support element (30).