Retractable Sunshade With Dual Hook Mechanism
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Solution Overview
Problem
Existing dashboard-mounted retractable sunshades for vehicles lack efficient mechanisms for easy deployment and adjustment, particularly in providing effective shade from sunlight and heat, and do not adequately accommodate variations in vehicle structures.
Innovation Solution
The integration of a dual hook mechanism with adjustable hooks and a plurality of jacks that allow the sunshade to be securely attached to the vehicle's roof, enabling easy extension and retraction, and adjustable positioning to block sunlight effectively, along with a roller subassembly that includes springs for wrapping around a housing rod.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a retractable sunscreen mechanism is provided, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The sunscreen is rolled up and stored within a housing structure, with the roller subassembly nested inside. The sunscreen fabric is wound around a rod and contained within the housing, creating a compact nested configuration that simplifies deployment while maintaining functionality.
Solution Approach 2:
The retractable mechanism uses spring-loaded components that automatically retract the sunscreen when not in use. The system serves itself by using the stored elastic energy in springs to return the sunscreen to its retracted position without requiring manual intervention.
2Adaptability or versatility
If the sunscreen is made adjustable to accommodate various vehicle structures, then adaptability is improved, but device complexity increases
Solution Approach 1:
The housing structure is designed with universal mounting capabilities that can accommodate different vehicle windshield sizes and shapes. The adjustable rod length and positioning mechanisms allow the same device to be installed in various vehicle models, providing multi-functionality without requiring multiple specialized units.
Solution Approach 2:
The rod and housing assembly includes adjustable and movable components that can be positioned at different locations and angles. This dynamic adjustability allows the sunscreen to adapt to various vehicle structures while using a single standardized device design.
3Object-affected harmful factors
If the sunscreen provides complete coverage to block sunlight effectively, then shading performance is improved, but volume of the sunscreen increases
Solution Approach 1:
The sunscreen is designed to wrap around a curved rod and conform to the windshield's surface geometry. This curved configuration allows the fabric to provide complete coverage across the irregular surface of the windshield while minimizing the overall volume required, as the sunscreen follows the natural contours rather than requiring a large flat area.
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 solution provides a user-friendly, adjustable, and effective shading system that can be easily deployed and retracted, offering improved sun protection and accommodating various vehicle models by securely attaching to different structures, enhancing user convenience and adaptability.
Implementation Method 1
a roller subassembly that includes springs for wrapping around a housing rod
Data Source
AI summary
The dashboard-mounted retractable sunscreen comprises a sunshade, a dual hook mechanism and a plurality of jacks. The dual hook mechanism: a) adds one or more additional hooks to the top rod; and, b) allows the position of each of the plurality of hooks to move in a direction parallel to the center axis of the top rod.