Vehicle Shift Switch Tact Feedback for Audible Range Confirmation
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Solution Overview
Problem
Existing shift devices do not produce an operating sound when the shift switch is operated, which can make it difficult for users to confirm the shift range change of a vehicle's transmission.
Innovation Solution
Incorporating a tact switch within the shift switch that produces an operating sound when activated, along with additional mechanisms to gradually increase the operating load of the shift switch, ensuring a smooth transition from a small to large load rate, and providing additional switches for enhanced operation detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a tact switch is added to the shift switch, then the shift switch can produce an operating sound, but the device complexity increases
Solution Approach 1:
The patent combines the shift switch and tact switch into a single integrated unit. The tact switch is positioned adjacent to the shift switch, and both switches share a common housing structure, merging two functional elements into one compact assembly that provides both shifting control and operating sound feedback
2Reliability
If the operating load of the tact switch increases rapidly, then the switch operation becomes more distinct, but the operating feel becomes harsh
Solution Approach 1:
The patent introduces a first increasing portion that gradually increases the operating load of the shift switch before the tact switch's load rate changes. This preliminary action softens the overall operating feel by preparing the user's finger for the upcoming increase in resistance, making the transition smoother and more comfortable
3Measurement precision
If additional switches are added to enhance operation detection, then the detection accuracy improves, but the device complexity increases
Solution Approach 1:
The patent integrates multiple switch functions into a compact arrangement where the shift switch and additional switches share a common housing and operational mechanism. This merging approach provides enhanced operation detection through multiple switches while maintaining a relatively simple overall structure
Data Source
AI summary
A shift device including: a shift switch that, when operated, is configured to change a shift range of a transmission of a vehicle; and a tact switch that is provided in the shift switch and is operated as a result of the shift switch being operated.