Slim Sliding Sun Visor Using L-Shaped Guide Unit
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Solution Overview
Problem
Conventional sliding sun visors suffer from rattling noise and reduced rigidity due to a lack of structural rigidity in the clamp coupling unit, leading to potential damage and a bulky design, which increases weight and costs.
Innovation Solution
A slim structure sliding sun visor design that replaces the traditional sliding housing with an L-shaped guide unit, eliminating the need for aluminum caps and non-woven tapes, featuring a guide rail and clamp housing with elastic members to enhance movement and reduce thickness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the clamp is structured to surround the entire sliding pipe to maintain structural rigidity, then the coupling portion rigidity is improved, but the thickness (width) of the sun visor increases to about 20 mm, resulting in a coarse shape
Solution Approach 1:
The clamp structure is repositioned from surrounding the entire sliding pipe to being located only at the lower end of the sliding pipe. This spatial reconfiguration maintains the necessary coupling rigidity while significantly reducing the thickness of the sun visor body, achieving a slim profile without compromising structural strength.
Solution Approach 2:
The clamp structure is extracted from enclosing the entire sliding pipe and repositioned to only the lower end portion. This selective placement removes unnecessary material from the upper portion, reducing overall thickness while maintaining the functional rigidity needed for the coupling between the clamp and sun visor body.
2Volume of moving object
If the sliding housing width is reduced to minimize sun visor thickness, then the sun visor achieves a slim structure, but the clamp coupling unit lacks rigidity and becomes prone to rattling and damage
Solution Approach 1:
The clamp is positioned specifically at the lower end of the sliding pipe where structural support is most needed. This localized placement concentrates rigidity where it is functionally required, allowing the rest of the sun visor body to maintain a slim profile without compromising the durability of the clamp coupling unit.
Solution Approach 2:
The clamp structure transitions from a full-surround configuration to a localized lower-end configuration. This dimensional change in spatial arrangement maintains coupling reliability while enabling the slim overall structure by eliminating unnecessary material in the upper regions.
3Stability of the object's composition
If conventional sliding housing structure is used, then the sun visor maintains structural integrity, but the width is increased and weight is added
Solution Approach 1:
The conventional sliding housing structure is partially extracted, removing the upper portion that surrounds the sliding pipe. Only the essential lower end clamp structure is retained, which maintains structural integrity for the sliding and rotation functions while significantly reducing the overall weight of the sun visor assembly.
Solution Approach 2:
The structural support configuration changes from a full-surround housing to a localized lower-end clamp arrangement. This dimensional reconfiguration maintains the necessary structural integrity for stable operation while reducing material usage and overall weight.
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, weight, and costs while improving operational performance and wear resistance by minimizing tensile and bending forces during rotation and sliding, eliminating rattling noise.
Implementation Method 1
a flat spring of an intermittently operating part is maintained caught by the gear groove by elastic force
Data Source
AI summary
A sliding sun visor having a reduced thickness is provided. The visor includes a sliding housing provided on a sun visor body and installed to be movable in an axial direction of a pivot arm. A clamp is installed in the sliding housing to be fixed to the pivot arm and configured to guide and support a movement of the sliding housing when the sliding housing slides, in which a guide, which is a substitute for the sliding housing, is installed at an inner-upper end of the sun visor body to minimize a width of the sliding housing that surrounds the pivot arm. The guide includes a guide rail integrally formed at the inner-upper end of the sun visor body, a clamp housing moving together with the sun visor body along the guide rail, and a clamp installed in the clamp housing and sliding on the pivot arm.