Automotive Security Shade With Fixed Motor Spring and Compressible Ends
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Solution Overview
Problem
Existing security shades for automotive vehicles are complex, heavy, and costly due to numerous components, requiring extensive labor for installation and adaptation to various vehicle models and sizes, with fixed and compressible ends that do not offer sufficient flexibility or adjustability.
Innovation Solution
A security shade design featuring a roller tube with a cassette and spring housing containing a fixed motor spring, allowing for adjustable end cap travel distance and spring force, with compressible end units independent of the motor spring position, reducing noise and enhancing compatibility with multiple vehicle configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If many components are used to create a removable mounting portion and rotational biasing component, 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. The bracket is directly formed as part of the roller tube structure, eliminating the need for separate mounting components. This merging reduces the total number of parts while maintaining the ability to remove and reinstall the security shade.
Solution Approach 2:
The integrated bracket-roller tube assembly serves multiple functions: it provides structural support for mounting, enables rotational movement of the roller tube, and facilitates removal and reinstallation. This multi-functional design eliminates the need for dedicated separate components for each function.
2Adaptability or versatility
If many components are used for removable mounting and rotational biasing, then the security shade can be adapted to different vehicle applications, but the manufacturing cost and labor increase
Solution Approach 1:
By merging the bracket and roller tube into one piece, the patent reduces assembly steps and manufacturing complexity. The integrated structure can be produced as a single component or pre-assembled unit, significantly reducing labor requirements compared to assembling multiple separate parts.
Solution Approach 2:
The integrated assembly incorporates built-in flexibility through its design, allowing adaptation to different vehicle configurations without requiring multiple specialized components. The single structure can accommodate various mounting positions and orientations.
3Ease of operation
If a fixed end and one compressible end are used, then the security shade can be inserted into the vehicle interior, but the range of compression is limited
Solution Approach 1:
The patent makes both ends of the security shade compressible rather than having one fixed and one compressible end. This dynamic design allows the shade to be compressed from either end or both ends simultaneously, providing greater flexibility for installation in various vehicle configurations and positions.
Solution Approach 2:
The patent applies compression capability locally at both ends of the security shade independently. Each end can be compressed separately to accommodate different installation scenarios, providing localized adaptability that enhances overall versatility.
4Power
If the motor spring is not fixed, then the spring can provide rotational biasing, but noise may occur during operation
Solution Approach 1:
The patent incorporates a fixed motor spring design that pre-establishes proper mounting and cushioning arrangements to prevent noise before it occurs. The spring is securely anchored to eliminate unwanted movement and vibration that would generate noise during operation.
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 reduces weight and complexity, provides noise reduction, and allows for greater flexibility in vehicle compatibility, enabling easier installation and adjustment to meet various manufacturer requirements while maintaining robustness and durability.
Implementation Method 1
a motor spring arranged within the spring housing and fixed axially 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.