One-Piece Winding Assembly for Simpler Vehicle Protective Devices
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Solution Overview
Problem
Existing winding assemblies for motor vehicle protective devices require complex construction and production processes, including separate securing of the winding web to the winding shaft, which complicates manufacturing and increases weight.
Innovation Solution
A method and assembly where a form-stable winding shaft is created by form-stabilizing a wound-up first portion of flexible sheet-form material, and the flexible winding web is formed by an adjoining second portion, eliminating the need for separate securing and simplifying production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If separate securing of the winding web to the winding shaft is used, then the winding assembly can be produced with conventional methods, but the construction becomes complex and weight increases
Solution Approach 1:
The patent merges the winding shaft and winding web into a single integrated component made from one piece of flexible sheet-form material. The winding shaft is formed by winding and form-stabilizing a first portion of the material, while the winding web is formed by a second portion of the same material, eliminating the need for separate securing operations and reducing construction complexity.
2Ease of manufacture
If separate securing of the winding web to the winding shaft is used, then the winding assembly can be produced with conventional methods, but the weight increases
Solution Approach 1:
The patent merges the winding shaft and winding web into a single integrated component made from one piece of flexible sheet-form material. This eliminates the need for additional securing elements, joints, and fasteners that would increase weight, while the form-stabilized wound-up first portion provides sufficient structural integrity.
3Device complexity
If separate securing of the winding web to the winding shaft is used, then the winding assembly can be produced with conventional methods, but the production process becomes complex
Solution Approach 1:
The patent merges the winding shaft and winding web into a single integrated component made from one piece of flexible sheet-form material. This eliminates multiple production steps including separate manufacturing of the shaft, separate attachment operations, and quality control of joints, thereby simplifying the production process and increasing productivity.
4Ease of manufacture
If separate securing of the winding web to the winding shaft is used, then the winding assembly can be produced with conventional methods, but joints between components are required
Solution Approach 1:
The patent merges the winding shaft and winding web into a single integrated component made from one piece of flexible sheet-form material. This eliminates the need for joints, fasteners, adhesives, or other connecting elements, resulting in a simpler construction with no weak points or failure modes associated with joints.
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 approach simplifies construction and production, reduces weight, and enhances mounting and logistics processes by integrating the winding shaft and web into a continuous one-piece form.
Implementation Method 1
Form stabilization of the first portion can be carried out in the broadest sense by frictional engagement, interlocking engagement and/or substance-to-substance bonding
Implementation Method 2
Form stabilization of the first portion can be carried out in the broadest sense by frictional engagement, interlocking engagement and/or substance-to-substance bonding
Implementation Method 3
form stabilization comprises joining together winding layers of the wound-up first portion lying one on top of the other by substance-to-substance bonding
Implementation Method 4
The winding layers lying one on top of the other can be joined together by substance-to-substance bonding without the use of an additional substance if the flexible sheet-form material has corresponding properties and, for example, is liquefiable under the action of heat and/or pressure
Data Source
AI summary
A winding assembly for a protective device of a motor vehicle, and a method for producing such a winding assembly. Such a winding assembly includes a form-stable winding shaft and a flexible winding web held on the winding shaft such that it can be wound up and unwound. The winding shaft is formed by a form-stabilized wound-up first portion of a flexible sheet-form material and the flexible winding web is formed by a second portion of the flexible sheet-form material adjoining the first portion, whereby the winding shaft and the winding web are in continuous one-piece form.