Roll-up Shutter Slats for Vehicle Roof Ventilation
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Solution Overview
Problem
Existing motor vehicle roof opening devices are technologically complex, costly, and fragile, or they only allow partial roof exposure, which limits panoramic views and ventilation.
Innovation Solution
A motor vehicle equipped with a sunroof device featuring a shutter comprising multiple slats that can be unrolled and rolled up around a winding axis, with at least one tilting slat that can pivot between a sealing and ventilation position, allowing for full exposure or coverage of the roof opening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fabric top with folding and retractable mechanism is used, then the vehicle can be covered and uncovered, but the device becomes technologically complex, costly, and fragile
Solution Approach 1:
The shutter is divided into multiple individual slats that can move independently relative to each other. Each slat is a separate element that can be positioned independently, allowing the shutter to achieve complex functions (sealing, ventilation, partial opening) through simple individual components rather than a complex integrated mechanism
Solution Approach 2:
Instead of using a complex folding and retractable mechanism to achieve coverage, the invention uses a simple roll-up shutter that can be wound around a winding axis. The inversion lies in replacing the complex multi-component folding system with a simple cylindrical rolling system that achieves the same coverage function with much lower complexity
2Temperature
If a glazed plate sunroof device is used, then ventilation is allowed, but only a small part of the roof can be uncovered and the roof becomes heavier
Solution Approach 1:
The shutter slats can change their orientation parameter from a sealed position (contiguous with other slats) to a ventilated position (inclined at an angle). This parameter change allows the same physical structure to provide both sealing and ventilation functions without adding weight, as the slats simply rotate to different angles rather than being replaced by heavy glazed plates
3Device complexity
If a roll-up slatted shutter is used, then the device is simpler and more robust, but the slats must be sealed to prevent water and debris entry
Solution Approach 1:
The shutter system transitions from a static sealed structure to a dynamic system where slats can change their relative positions. The slats can move from a contiguous sealed configuration to an inclined ventilated configuration, allowing the system to adapt its sealing properties dynamically based on operational requirements. This dynamic capability resolves the contradiction by making sealing conditional rather than permanent
Data Source
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AI summary
The invention relates to a motor vehicle (1) comprising a passenger compartment, in the roof (2) of which an opening (3) is provided, as well as a sliding roof device (10) suitable for closing off or freeing said opening (3). According to the invention, said sliding roof device (10) comprises a shutter (100) comprising a plurality of slats (1000A, 1000B, 1000C, 1000D, 1000E) arranged next to one another in parallel with a winding axis (801) of the shutter, and actuation means for rolling down and rolling up the shutter (100) about the winding axis (801) thereof, between an rolled down configuration in which said shutter is opened out so as to close off said opening (3) in the roof (2) of the passenger compartment, and a rolled up configuration in which said shutter is rolled up about the winding axis (801) thereof so as to free this opening (3).