Sliding Sun Visor Mirror Cover With Card-Blocking Stoppers
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Solution Overview
Problem
Existing vehicle sun visors allow cards to be erroneously inserted between the frame and mirror cover, leading to difficulty in retrieving them from the visor main body.
Innovation Solution
Incorporation of stopper portions on the frame and mirror cover to prevent card insertion, including a first stopper on the frame leading into the opening direction of the mirror cover and a second stopper on the mirror cover leading into the closing direction, restricting card entry into the visor main body.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the mirror cover is made slidable between closed and open positions, then the ease of operation is improved, but the risk of cards being erroneously inserted into the visor main body increases
Solution Approach 1:
The patent applies preliminary anti-action by providing stopper portions that prevent cards from being inserted into the visor main body before the harmful effect (card loss) can occur. The first stopper portion on the frame and the second stopper portion on the mirror cover work together to block card insertion paths, thereby preemptively countering the potential harmful action of erroneous card insertion while maintaining the slidable mirror cover operation.
2Reliability
If stopper portions are added to prevent card insertion, then the reliability is improved, but the device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the stopper function into two separate stopper portions: a first stopper portion disposed on the frame and a second stopper portion disposed on the mirror cover. This segmentation allows each stopper to address specific insertion paths independently, improving reliability while keeping each individual stopper structure simple and easy to manufacture.
Solution Approach 2:
The patent merges the stopper portions with existing structural elements of the sun visor. The first stopper portion is integrated into the frame, and the second stopper portion is integrated into the mirror cover, rather than being separate additional components. This merging approach adds the card prevention function without significantly increasing overall device complexity.
Data Source
AI summary
A vehicle sun visor includes a hollow visor main body that includes a frame portion including an opening, a mirror that is attached to the frame portion to face the opening, and a mirror cover configured to slide relative to the visor main body between a closed position at which the mirror cover covers the mirror and an open position at which the mirror cover exposes the mirror. The vehicle sun visor further includes at least one of a first stopper portion that is disposed at a section of the frame portion on a leading side in an opening direction of the mirror cover and protrudes toward the mirror cover, or a second stopper portion that is disposed at an end portion of the mirror cover on a leading side in a closing direction of the mirror cover and protrudes toward the mirror.