Vehicle Shift Device Restricting Body Position Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing shift devices for vehicles fail to effectively stop the movement of a shift body at a predetermined shift position, leading to instability and potential misalignment during gear changes.
Innovation Solution
A shift device with a restricting body that is positioned to restrict the movement of the shift body at specific predetermined positions, using a combination of mechanical and electrical components to ensure precise control and locking mechanisms for the shift body, allowing it to be stopped at desired positions like 'P', 'R', 'N', and 'D'.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a locking element is used to restrict rotation of the operation element from the P position, then the shift body can be held at the predetermined position, but the device complexity increases
Solution Approach 1:
The restricting body is divided into multiple restricting portions (first restricting portion and second restricting portion) that can independently engage with different positions of the shift body. This segmentation allows the single restricting body to provide multiple locking functions without requiring separate locking mechanisms for each position, thereby maintaining position stability while controlling structural complexity.
Solution Approach 2:
The restricting body is designed to perform multiple functions: it can restrict the shift body at the P position through the first restricting portion, permit movement between positions, and restrict the shift body at intermediate positions through the second restricting portion. This multi-functionality eliminates the need for separate locking elements for different positions, resolving the contradiction between reliability and device complexity.
2Reliability
If the restricting body restricts movement at intermediate positions, then the shift body can be stopped at predetermined positions, but the ease of operation decreases
Solution Approach 1:
The restricting body is designed with dynamic characteristics where the second restricting portion can selectively engage with the shift body at intermediate positions based on the direction and speed of movement. During normal operation, the dynamic design allows smooth passage, but during unintended movements or inertia-induced shifts, the restricting portions engage to provide positional accuracy, thus resolving the contradiction between reliability and ease of operation.
3Measurement precision
If the restricting body is positioned to restrict movement at multiple positions, then position accuracy is improved, but the device complexity increases
Solution Approach 1:
Multiple restricting functions are merged into a single integrating restricting body structure. The first restricting portion and second restricting portion are combined in one component that can engage with the shift body at multiple positions (P position and intermediate positions) without requiring separate locking mechanisms for each position, thereby achieving high position accuracy while minimizing mechanism complexity.
Data Source
AI summary
A shift device for a vehicle includes: a shift body that is moved and whose shift position is changed to a plurality of shift positions; a moving unit that moves the shift body; and a restricting body that restricts movement of the shift body by the moving unit at a predetermined shift position among the plurality of shift positions.