Vehicle Sun Visor Thickness Reduction via External Pivot Clamp
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Solution Overview
Problem
Conventional vehicle sun visors have a thick design due to the clamp and rotating shaft, reducing headroom space and not meeting aesthetic trends in coupe design while effectively blocking sunlight.
Innovation Solution
A sun visor with a plate-like body portion and a pivot arm that is cut to form a section, featuring a clamp connected to the vehicle body with an elastic member to compress the pivot arm, and wing units to support the body portion, allowing for efficient rotation and reduced thickness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the clamp and rotating shaft are formed inside the sun visor, then the sun visor can effectively block sunlight and rotate, but the thickness of the sun visor is increased
Solution Approach 1:
The clamp is extracted from the interior of the sun visor and repositioned to wrap around the pivot arm externally. The pivot arm passes through the clamp, which is connected to the vehicle body, separating the clamping function from the visor body thickness while maintaining the sunlight blocking capability.
Solution Approach 2:
The clamp structure transitions from a horizontal arrangement inside the visor to a vertical wrapping arrangement around the pivot arm. This dimensional change allows the clamp to function externally, reducing the visor's thickness while preserving rotational functionality.
2Ease of operation
If the clamp and rotating shaft are formed inside the sun visor, then the sun visor can rotate smoothly, but the interior headroom space is reduced
Solution Approach 1:
The rotating mechanism components (clamp and pivot arm connection) are extracted from the visor body and repositioned to wrap around the pivot arm externally. This extraction eliminates the space occupation within the visor thickness, thereby increasing interior headroom while maintaining rotation smoothness through the external clamp-pivot arm connection.
3Volume of moving object
If the sun visor thickness is reduced, then interior headroom space is increased, but the structural support for rotation may be weakened
Solution Approach 1:
The pivot arm serves as an intermediary element that connects the sun visor body to the vehicle body through the clamp. This intermediary structure provides the necessary structural support for rotation while allowing the visor body itself to be thinner, thus maintaining strength without increasing headroom space.
Solution Approach 2:
The clamp structure uses a composite design combining a wrapping portion that contacts the pivot arm and a connection portion attached to the vehicle body. This composite structure distributes mechanical loads effectively, providing sufficient rotational support while maintaining a thin visor profile.
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
The solution reduces the sun visor's thickness, increases interior headroom space, enhances the blocking of sunlight, and simplifies the structure, assembly, and production, improving livability and brand image while reducing costs.
Implementation Method 1
an elastic member provided on an upper side of the clamp to compress the pivot arm when the body portion rotates
Data Source
AI summary
A sun visor for a vehicle may include a plate-like body portion having a predetermined thickness, a pivot arm wherein a first end thereof may be secured to a vehicle body and a second end thereof may be joined through an upper side of the body portion in a length direction at a section which may be cut in a length direction to form a cut section, a clamp which may be connected sideways to the vehicle body and may be shaped to wrap the pivot arm, an elastic member provided on an upper side of the clamp to compress the pivot arm when the body portion rotates.