Vehicle Sun Visor Mounting With Oblique Insertion Recess
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Solution Overview
Problem
Existing vehicle sun visors face difficulties in easily mounting the engaging piece due to elastic deformation, which can lead to plastic deformation and rattling issues over time.
Innovation Solution
The vehicle sun visor design incorporates a recessed mounting system with oblique inlet protrusions and stoppers that allow the shaft to be inserted without deformation, ensuring secure and durable attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the engaging piece is inserted into the visor main body while being elastically deformed, then the engaging piece can be mounted onto the visor main body, but it is not easy to mount and the engaging piece may undergo plastic deformation or deformation over time causing rattling
Solution Approach 1:
The inlet recess is formed in advance in the mounting part to create a recessed receiving space. This preliminary structural preparation allows the shaft end to be inserted obliquely without requiring elastic deformation of the shaft or mounting part, thereby facilitating easy mounting while preventing plastic deformation and ensuring long-term reliability.
2Ease of manufacture
If the engaging piece is significantly deformed during mounting, then the engaging piece can be inserted into the visor main body, but the engaging piece may rattle relatively to the visor main body over time
Solution Approach 1:
The inlet recess is pre-formed in the mounting part to create a recessed receiving space. This preliminary structural preparation allows the shaft end to be inserted obliquely without significant deformation, maintaining structural stability and preventing rattling over time.
Solution Approach 2:
The inlet recess provides a three-dimensional recessed space that allows oblique insertion of the shaft end from a radial direction. This dimensional change in the insertion path enables mounting without significant deformation, maintaining structural integrity and preventing future rattling.
3Ease of operation
If the shaft is inserted into the mounting part without deformation, then the shaft can be easily mounted, but the shaft may move farther into the visor main body than intended without proper positioning
Solution Approach 1:
The inlet recess is pre-formed to guide the shaft end into the correct position obliquely. The stopper is also pre-positioned to restrict further movement. This preliminary structural preparation ensures both easy insertion and precise positioning, preventing the shaft from moving farther than intended.
Solution Approach 2:
The inlet recess and stopper structure enables the shaft to be inserted and positioned automatically without requiring additional deformation or complex alignment procedures. The shaft self-guides into the recess and self-limits at the stopper, achieving both ease of operation and manufacturing precision.
Data Source
AI summary
A vehicle sun visor having a visor main body with a recess; a shaft located in the recess; and first and second mounting parts. The first mounting part has an inlet through which a first shaft end is inserted; an inlet protrusion; an inlet recess; a deep-side protrusion that extends from the inlet recess toward a deep side and protrudes toward the first shaft end; a deep-side flat part that extends farther toward the deep side than the inlet protrusion; and a first stopper that is located at a position farther on the deep side than the deep-side protrusion. The second mounting part has an inlet through which a second shaft end is inserted; a first inlet protrusion that protrudes at the inlet toward the second shaft end; a second inlet protrusion; and a second stopper that is located farther on a deep side than the second inlet protrusion.