Sunroof Auto Release Stopper Mechanism for Sunshade Control
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Solution Overview
Problem
Conventional sunshade apparatuses for two-way sunroofs lack automatic full opening and prevention of closure when the glass panel is slightly open, leading to inconvenience and vulnerability to weather damage and theft.
Innovation Solution
An apparatus featuring an auto release stopper on the glass panel interacting with an auto release bracket on the sunroof garnish, allowing the sunshade to automatically open fully and preventing closure once the glass panel is slightly open, ensuring the sunshade remains open and cannot be manually closed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a stop and catch mechanism is used to prevent sunshade closing, then the sunshade can be prevented from closing when the glass panel is open, but the user must manually slide back the sunshade to fully open it, reducing convenience
Solution Approach 1:
The sunshade automatically opens itself when the glass panel is tilted, without requiring manual intervention. The bracket and stopper mechanism automatically releases the sunshade from its closed position and allows it to retract fully on its own, making the system self-serving rather than requiring user action.
Solution Approach 2:
The bracket is pre-positioned to engage with the stopper at a specific angle. When the glass panel reaches the predetermined tilt angle, the bracket automatically disengages from the stopper in advance, triggering the sunshade to open before the panel reaches the fully open position, ensuring seamless operation.
2Device complexity
If the sunshade remains closed while the glass panel is slightly open, then the cabin appearance is maintained, but the vehicle becomes vulnerable to weather damage and theft
Solution Approach 1:
The mechanism provides automatic feedback between the glass panel position and the sunshade position. When the glass panel is tilted open, this triggers the sunshade to automatically open as well, ensuring that the sunshade state always reflects the actual sunroof opening state, preventing the vulnerable intermediate condition.
Solution Approach 2:
The system transitions from a static sunshade position to a dynamic one that automatically responds to glass panel movement. The bracket and stopper create a mechanical linkage where the sunshade's position is dynamically coupled to the glass panel's position, ensuring synchronized operation.
3Loss of information
If the glass panel position is not apparent when the sunshade is fully closed, then the cabin appearance is maintained, but the occupant may not realize the glass panel is open, leading to security issues
Solution Approach 1:
The sunshade acts as a visual indicator that provides feedback about the glass panel's actual position. When the sunshade opens automatically, it clearly communicates to the occupant that the sunroof is open, preventing the information loss that occurs when the sunshade remains closed despite the panel being open.
Data Source
AI summary
A window assembly mounted in a roof of an automobile vehicle having an opening with a sunshade receiver. The window assembly includes a glass panel moveable from a fully closed position, through a slightly open to a fully open position in a two-step motion. The glass panel includes at least one auto release and a roll-up sunshade disposed beneath it having a spring loaded retractable screen via a tensioning and rewinding device and a sunshade latch. The at least one auto release stopper has a predetermined shape and size to engage with the at least one auto release bracket when the glass panel begins to be slightly open in order to disconnect the sunshade latch from the sunshade receiver and let the screen move from a fully closed position to a fully open position under the action of the tensioning and rewinding device.