Vehicle Switch Cover with Partial Opening for Error Reduction
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Solution Overview
Problem
Existing vehicle switch devices face issues with erroneous operation of road service switches adjacent to emergency notification switches due to similar operating surfaces and covers, requiring careful attention to distinguish between them, which can lead to mistakes during emergency situations.
Innovation Solution
A switch device design where the emergency notification switch has a lower operating surface than other switches, with a cover that exposes the operating surface of at least one other switch at its closed position, allowing easy access and reducing erroneous operation by creating a distinct step between switch surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all operation switches are covered with a closed cover to prevent erroneous operation, then reliability is improved, but ease of operation deteriorates because users cannot easily access or distinguish between switches
Solution Approach 1:
The cover is divided into multiple sections: a first cover portion that covers the emergency notification switch and a second cover portion that exposes the road service switch. This segmentation allows different operational modes - the exposed road service switch can be operated without opening the cover while the emergency switch remains protected, resolving the contradiction between preventing erroneous operation and ensuring ease of access.
Solution Approach 2:
Different regions of the cover have different transparency properties. The second cover portion corresponding to the road service switch is made transparent or has an opening, while the first cover portion corresponding to the emergency notification switch remains opaque. This local differentiation in quality allows selective accessibility - the road service switch is easily accessible through the transparent portion while the emergency switch remains covered, preventing erroneous operation while maintaining ease of operation for routine functions.
2Device complexity
If all operation switches have the same operating surface height for aesthetic appearance, then device complexity is reduced, but ease of operation deteriorates because switches cannot be distinguished by touch
Solution Approach 1:
The operating surfaces of different switches are positioned at different heights relative to the cover. The road service switch operating surface is positioned at a first height that is accessible through the transparent second cover portion, while the emergency notification switch operating surface is positioned at a second height that is covered by the opaque first cover portion. This asymmetric positioning allows users to distinguish between switches by touch and visual inspection through the transparent cover, maintaining aesthetic uniformity while improving operability.
Data Source
AI summary
A switch device for a vehicle includes an emergency notification switch, an operation switch other than the emergency notification switch, and a cover that is movable between a closed position at which the emergency notification switch and the operation switch are covered and an open position at which the emergency notification switch and the operation switch are exposed. In the switch device, an operating surface of the emergency notification switch is located at a position lower than an operating surface of the operation switch, and the cover is provided with an opening through which the operating surface of the operation switch is exposed at the closed position.