Shift Lever Detection via Moving Body Amplification
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Solution Overview
Problem
Existing shift devices struggle to accurately detect the position of a shift body when operated in both directions, leading to inefficiencies in shift lever operation and detection accuracy.
Innovation Solution
A shift device design featuring a shift body, intermediate body, supporting body, moving body, and detecting means, where the moving body's movement is amplified to enhance detection accuracy, with an assisting portion to guide movement and a compact detecting mechanism that can operate in both directions, allowing for precise shift position detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the shift body is operated in directions with smaller displacement, then the detection accuracy deteriorates, but the device needs to maintain accurate detection in all directions
Solution Approach 1:
The patent introduces a moving body as an intermediary between the shift body and the detecting means. This moving body includes a moving portion that is amplified in its movement relative to the shift body's displacement, allowing the detecting means to accurately detect shift positions even when the shift body operates in directions with smaller displacement. The moving body acts as a mediator that transforms small displacements into larger, more detectable movements.
Solution Approach 2:
The patent changes the movement parameter of the moving portion relative to the shift body. By designing the moving body such that its moving portion has amplified movement compared to the shift body's displacement, the system transforms the detection parameter from direct small displacement to amplified movement, thereby improving detection accuracy across all operation directions.
2Measurement precision
If a simple detection mechanism is used, then the device complexity is reduced, but the detection accuracy deteriorates
Solution Approach 1:
The moving body serves as an intermediary that enhances the detection capability without requiring a complex detecting means. The amplification of the moving portion's movement provides greater detection accuracy while keeping the detecting means itself relatively simple, as it only needs to detect the amplified movement rather than the original small displacement.
3Measurement precision
If the moving portion has large displacement, then the detection accuracy is improved, but the device size increases
Solution Approach 1:
The moving body acts as a compact intermediary mechanism that achieves movement amplification without requiring large overall device dimensions. The amplification is achieved through the mechanical design of the moving body's connection to the shift body and intermediate body, allowing large moving portion displacement within a compact space.
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 design improves detection accuracy by amplifying the moved amount of the moving portion, ensuring accurate shift position detection even when the shift body is operated in directions with smaller displacement, and allows for common use in both right-hand and left-hand drive vehicles, reducing manufacturing costs.
Implementation Method 1
the shift position is detected due to a Hall element detecting the position of the sensor magnet
Data Source
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AI summary
In a shift lever device, at a time when a shift lever is pivotally operated in a front-rear direction, a retainer and a link are pivoted integrally with the shift lever, and a pivot portion is pivoted in the front-rear direction. Further, at a time when the shift lever is pivotally operated in a left-right direction, the shift lever is pivoted with respect to the retainer, and the link is pivoted, and the pivot portion is thereby pivoted in the left-right direction. Moreover, a position of the pivot portion is detected by a detecting mechanism, and a shift position of the shift lever is detected. Therefore, the shift position of the shift lever can be detected via the link.