Vehicle Shifter Mechanism for Compact Steering Column Design
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Solution Overview
Problem
Current vehicle shifters for transmission, located near the steering column, occupy significant space and detract from the appearance of the steering column and dash area, necessitating a more compact design while maintaining smooth shifting functionality.
Innovation Solution
A shifter design featuring a rotatable shaft connected to a lateral movement device, including a cam housing and guide rods, which translates rotational motion into lateral movement via a cable pin connected to the shift mechanism, reducing spatial requirements and enhancing aesthetics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a traditional linkage system is used for the shifter, then the shifting function is reliable, but the space occupied around the steering column is excessive
Solution Approach 1:
The patent replaces the traditional mechanical linkage system with a cable-operated mechanism. The shift cable transmits force from the shift lever to the transmission, eliminating the need for complex linkages. This substitution significantly reduces the space required while maintaining reliable shifting functionality through the cable's flexible yet durable construction.
Solution Approach 2:
The patent extracts and eliminates the intermediate linkage components from the shifting system. By directly connecting the shift lever to the cable and the cable to the transmission, the design removes unnecessary mechanical intermediaries that occupied space, achieving a more compact arrangement while preserving the essential shifting function.
2Shape
If a traditional linkage system is used for the shifter, then the shifting mechanism is robust, but the appearance of the steering column and dash area is compromised
Solution Approach 1:
The cable-operated system replaces the bulky mechanical linkages with a sleek, flexible cable that requires minimal space and can be routed cleanly through the steering column area. This substitution maintains the robustness of the shifting mechanism while significantly improving the visual appearance of the dashboard and steering column region.
Solution Approach 2:
The patent transitions from a rigid, multi-component mechanical linkage occupying three-dimensional space to a flexible cable that can be routed through confined spaces and concealed within the steering column structure. This dimensional flexibility allows for both aesthetic improvement and maintained mechanical robustness.
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 compact shifter arrangement minimizes space usage around the steering column, providing a visually appealing and functional shifting mechanism for automatic transmissions with smooth operation across various gear positions.
Implementation Method 1
A cam housing is positioned on the portion of the shaft that extends from the shifter holder adjacent the support plate. The cam housing defines a cam profile that defines a spiral path in the cam housing.
Data Source
AI summary
A shifter for the transmission of a vehicle is described. The shifter has a shift lever operatively connected to the transmission. A rotatable shaft is connected to the lever. A lateral movement device is operatively connected to the shaft. A cable pin is positioned on the lateral movement device and connected to the shift mechanism for the transmission.