Folding Top Interior Light Positioning via Elastic Securing
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Solution Overview
Problem
Existing folding tops for vehicles do not effectively integrate an interior light that remains functional and precisely follows the movement of the top between closed and opened positions, affecting illumination of the passenger compartment.
Innovation Solution
A folding top design incorporating a cover, frame assembly, interior light, and securing device, where the interior light is integrated into the interior covering and secured by an elastic band that tensions against the rear top bow, allowing the light to maintain a fixed position during closure and follow the covering during opening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the interior light is rigidly fixed to the top bows, then the light maintains a stable position when closed, but the light cannot follow the movement of the folding top when opening
Solution Approach 1:
The patent applies the dynamics principle by using an elastic band instead of a rigid connection to attach the interior light to the top bows. The elastic band allows the light to dynamically adapt its position: when the folding top is closed, the light is tensioned against the rear top bow to maintain a fixed position; when the folding top opens, the light can move freely within the opening of the interior covering, following the movement of the top. This resolves the contradiction between position stability and movement adaptability.
2Adaptability or versatility
If the interior light is loosely attached to allow movement, then the light can follow the folding top movement, but the light cannot maintain a fixed position for proper illumination when closed
Solution Approach 1:
The elastic band creates a dynamic system that transitions between two states: tensioned (fixed position) and relaxed (free movement). When the folding top is in the closed position, the elastic band tensions the light against the rear top bow, ensuring proper illumination. When opening, the band relaxes and allows the light to move freely within the interior covering opening, following the top's movement.
Solution Approach 2:
The patent changes the physical state parameter of the securing mechanism from rigid (fixed) to elastic (variable). The elastic band's ability to stretch and relax allows the light's position to change from fixed to mobile depending on the folding top's state, resolving the contradiction between needing stability and needing adaptability.
3Manufacturing precision
If a complex securing mechanism is used to precisely position the light, then the light position and movement are controlled, but the device complexity increases
Solution Approach 1:
The elastic band creates a self-regulating system that automatically adjusts the light's position based on the folding top's state. When the top is closed, the band's elasticity naturally tensions the light against the rear top bow; when opening, the band relaxes and allows free movement. This self-service mechanism eliminates the need for complex actuators, sensors, or control systems, achieving precise positioning with minimal complexity.
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
Ensures the interior light provides consistent illumination to the passenger compartment when closed and securely follows the folding top's movement to the open position, enhancing design flexibility and production efficiency while maintaining structural integrity.
Implementation Method 1
The securing device is a favorably shaped elastic band that cooperates in a specific way with the top bows for securing the interior light when the folding top is in the closed position
Data Source
AI summary
A folding top for a vehicle includes a cover, a frame assembly having rear and front top bows, a light, and a securing device. The cover has a top cloth and an interior covering which are spaced apart from one another. The bows extend through the spacing between the top cloth and the covering. The top cloth and the covering are stretched over the bows with the opening of the covering being rearward of the rear bow. The bows are movable between a closed position in which the cover is raised and an opened position in which the cover is lowered. The light is positioned within the opening of the covering. The securing device extends through the spacing between the top cloth and the covering between the front bow and rearward of the rear bow. The securing device tensions the light against the rear bow when the cover is raised.