Fixed Motor Spring Automotive Shade Design
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Solution Overview
Problem
Existing security shades for automotive vehicles are complex, heavy, and costly due to numerous components, with a fixed end and one compressible end, which limits their range of compression and adaptability to various vehicle sizes and positions, and often produce noise during operation.
Innovation Solution
A security shade design featuring a roller tube with a cassette and spring housing containing a fixed motor spring, allowing for independent compression on both ends, adjustable end cap travel distance and spring force, and a non-removable end cap to enhance adaptability and reduce noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If prior art security shades use multiple components for removable mounting and rotational biasing, then the security shade can be removed and reinstalled, but the weight, cost, and complexity increase
Solution Approach 1:
The patent combines the mounting bracket and roller tube into a single integrated assembly, eliminating the need for separate mounting components. The roller tube itself serves as the mounting structure through its engagement with vehicle brackets, reducing the total component count while maintaining removable mounting capability
Solution Approach 2:
The roller tube serves multiple functions: it acts as the rotating element for the shade panel, provides the mounting interface with vehicle brackets through its end caps, and houses the spring mechanism. This multi-functionality reduces the need for separate dedicated components for each function
2Reliability
If prior art security shades have one fixed end and one compressible end, then the assembly can be secured in the vehicle, but the range of compression is limited for multiple vehicle positions
Solution Approach 1:
The patent makes both end caps compressible rather than having one fixed and one compressible end. This dynamic capability allows both ends to adjust independently, providing a greater range of compression to accommodate multiple vehicle positions and configurations while maintaining secure mounting
3Adaptability or versatility
If prior art security shades use many components for adaptability to different vehicle applications, then the security shade can fit various vehicle models and widths, but the assembly time and labor increase
Solution Approach 1:
The patent divides the security shade into modular segments: the roller tube assembly with integrated mounting brackets, the shade panel, and the pull tube assembly. This segmentation allows for easier handling and assembly of individual components, reducing overall assembly time while maintaining adaptability through the modular design that can be configured for different vehicle sizes
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 design reduces weight and complexity, provides a greater range of compression for multiple vehicle positions, and adjustable features to meet various manufacturer requirements, while minimizing noise and ensuring secure operation.
Implementation Method 1
a motor spring arranged within the spring housing and axially fixed with relation to the roll tube and the cassette
Data Source
AI summary
A security shade for use in an automotive vehicle. The security shade includes a cassette having a roll tube arranged therein. The roll tube has a shade panel fixed to the roll tube at one end thereof. The security shade also includes a bearing arranged in an end of the roll tube and a spring housing arranged in an end of the cassette. A motor spring is arranged within the spring housing and is axially fixed with relation to the roll tube and the cassette. The security shade also includes an end cap arranged over an end of a cassette. The security shade has the compressible end cap over each end of the roll tube and cassette.