Shift-by-wire Gear Shifter Haptic Feedback Mechanism
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Solution Overview
Problem
Conventional shift-by-wire transmission systems rely on visual and auditory cues for gear shifting recognition, which can be unreliable in noisy or distracting environments, leading to unclear driver feedback when shifting into the R stage.
Innovation Solution
Incorporating a haptic element that generates a vibration when shifting into a predetermined gear stage, transmitted through a groove member and housing, to provide tactile feedback to the driver, enhancing recognition performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If visual and auditory cues are used for gear shifting recognition, then the driver can recognize gear shifting stage, but the recognition reliability deteriorates in noisy or distracting environments
Solution Approach 1:
The patent applies mechanical vibration through a haptic element that generates vibrations when the gear shifts to the R stage. These vibrations are transmitted through the housing and groove member to the gear shifting operation portion, providing tactile feedback that is reliable even in noisy environments where visual and auditory cues may fail.
2Reliability
If a haptic element is added to generate vibration feedback, then the driver recognition performance improves, but the device complexity increases
Solution Approach 1:
The haptic element is integrated into the existing housing structure through an element groove, merging the vibration generation function with the structural component. The groove member couples the haptic element's vibration to the gear shifting operation portion, combining multiple functions (structural support, vibration transmission, and gear shifting mechanism) into integrated components rather than adding separate independent systems.
3Ease of operation
If vibration is transmitted through the housing and groove member, then the tactile feedback reaches the driver, but the vibration impact on the steering wheel and indicator durability increases
Solution Approach 1:
The element groove is designed to extract and contain the vibration within a specific path through the housing and groove member, directing the vibration toward the gear shifting operation portion while preventing uncontrolled transmission to other components like the steering wheel and indicator, thereby protecting their durability.
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 vibration feedback clearly indicates to the driver that the gear has shifted into the R stage, improving operational recognition and reducing confusion in challenging environments, while minimizing vibration impact on the steering wheel and indicator durability.
Implementation Method 1
a haptic element provided in contact with the housing and configured to generate a vibration when the gear is shifted to a predetermined gear shifting stage
Data Source
AI summary
A shift-by-wire transmission system includes a gear shifting operation portion provided at an end portion of a body and configured to shift a gear, a housing provided inside the body, a haptic element provided in contact with the housing and configured to generate a vibration when the gear is shifted to a predetermined gear shifting stage to transmit the vibration to the housing, and a groove member coupled to the gear shifting operation portion and configured to operate in conjunction with a gear shifting operation of the gear shifting operation portion and transmit the vibration of the haptic element, which is transmitted to the housing, to the gear shifting operation portion by constantly maintaining a state in contact with the housing.