Sunroof Link Torque Stability Mechanism
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing sunroof apparatuses experience instability in tilting due to a decrease in torque as the link rotates, leading to uncontrolled movement of the movable panel, particularly when the link stands up or inclines.
Innovation Solution
The sunroof apparatus incorporates a link with a first guide surface and a second guide surface, where the first distance from the rotation center to the first guide shaft is longer than the second distance to the second guide shaft when the link is between the standing and middle positions, and vice versa, allowing for consistent torque application throughout the tilting motion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the link rotates to stand up or incline, then the tilting motion is achieved, but the torque decreases and the movable panel becomes unstable
Solution Approach 1:
The patent applies the Dynamics principle by making the link structure movable and adjustable. The link can rotate between a standing position and an inclination position, dynamically changing its configuration to maintain stable tilting motion. The movable panel is supported by the link which rotates to adjust the tilting angle, ensuring the panel remains stable throughout the motion range.
Solution Approach 2:
The patent applies the Parameter changes principle by changing the geometric parameters of the link mechanism. The link length, rotation angle, and position of the movable panel are adjusted to maintain consistent torque application. By modifying these parameters, the system ensures stable tilting motion while preventing the panel from becoming unstable during rotation.
2Device complexity
If a single guide surface is used, then the structure is simple, but the torque application becomes inconsistent during rotation
Solution Approach 1:
The patent applies the Segmentation principle by dividing the link into multiple segments or components. The link includes a first link portion and a second link portion that can rotate relative to each other. This segmentation allows each portion to be optimized for specific functions, ensuring consistent torque application while maintaining overall structural simplicity.
Solution Approach 2:
The patent applies the Dynamics principle by making the link structure movable and adjustable. The link can rotate between a standing position and an inclination position, dynamically changing its configuration to maintain stable tilting motion. The movable panel is supported by the link which rotates to adjust the tilting angle, ensuring the panel remains stable throughout the motion range.
Data Source
AI summary
A sunroof apparatus includes a link including a first guide surface configured to slide with a first guide shaft in a case where a shoe moves in a first direction and a second guide surface configured to slide with a second guide shaft, the link rotating between a standing position and an inclination position in a state of supporting a movable panel, the standing position where the movable panel is arranged at a tilt-up position, a inclination position where the movable panel is arranged at a tilt-down position. In a case where the link is arranged between a first position and a middle position, a first distance is longer than a second distance. In a case where the link is arranged between a second position and the middle position, the second distance is longer than the first distance.