Gear Selector Lever Oblique Pivot Axis for Cable Friction
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Solution Overview
Problem
Existing shift selector lever devices are not suitable for both asymmetric and symmetrical vehicles, leading to increased cable friction, complex guidance, and higher assembly and manufacturing costs, as they require separate designs for different vehicle configurations.
Innovation Solution
The pivot axis of the deflection levers is arranged at a specific angle relative to the housing axes, allowing the control cables to exit the housing obliquely, which simplifies cable guidance and allows the device to be used in both asymmetric and symmetrical vehicles, with adjustable control cable holding elements to accommodate different vehicle configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the control cables are guided vertically from the deflection levers, then the device works correctly for asymmetric vehicles, but the cable friction increases and the guidance becomes complex for symmetrical vehicles
Solution Approach 1:
The patent applies asymmetry by arranging the pivot axis of the deflection levers obliquely at a specific angle (e.g., 45 degrees) relative to the longitudinal axis of the housing, rather than symmetrically or vertically. This asymmetric arrangement allows the control cables to exit the housing in an oblique direction, creating a more favorable cable path that reduces friction and simplifies guidance for both symmetrical and asymmetric vehicle configurations.
2Reliability
If separate designs are created for asymmetric and symmetrical vehicles, then each vehicle type gets optimized performance, but the device complexity and manufacturing costs increase
Solution Approach 1:
The patent implements universality by designing a single gear selector lever device with an obliquely arranged pivot axis that can be universally applied to both symmetrical and asymmetric vehicle configurations. The oblique cable exit direction and adjustable cable holding elements enable the same device to adapt to different vehicle layouts without requiring separate designs, thereby reducing device complexity and manufacturing costs while maintaining optimized performance for each vehicle type.
3Ease of manufacture
If the pivot axis is arranged vertically, then the assembly is simple for asymmetric vehicles, but the cable guidance becomes complex and friction increases for symmetrical vehicles
Solution Approach 1:
The patent applies asymmetry by arranging the pivot axis of the deflection levers obliquely at a specific angle (e.g., 45 degrees) relative to the longitudinal axis of the housing, rather than symmetrically or vertically. This asymmetric arrangement allows the control cables to exit the housing in an oblique direction, creating a more favorable cable path that reduces friction and simplifies guidance for both symmetrical and asymmetric vehicle configurations.
4Object-affected harmful factors
If multiple design variants are produced, then each vehicle configuration gets optimal cable guidance, but the manufacturing and assembly costs increase
Solution Approach 1:
The patent implements universality by designing a single gear selector lever device with an obliquely arranged pivot axis that can be universally applied to both symmetrical and asymmetric vehicle configurations. The oblique cable exit direction and adjustable cable holding elements enable the same device to adapt to different vehicle layouts without requiring separate designs, thereby reducing device complexity and manufacturing costs while maintaining optimized performance for each vehicle type.
Data Source
Figure 1~2b
Figure 3a
Figure 3b
AI summary
The invention relates to a shift selector lever device for selecting and/or switching gear stages of a gearbox of a motor vehicle is operatively connected to a second coupling rod for switching the respective gear stages, a first and a second deflecting lever being arranged at least partially pivotally within the housing and the second coupling rod is operatively connected to the second deflecting lever, the first deflecting lever being connected to a first actuating cable And the second deflecting lever is operatively connected to a second actuating cable, and wherein the housing (Y-axis) running essentially transversely, in particular parallel to the vehicle transverse axis, and a substantially longitudinal, in particular parallel, to the longitudinal axis of the housing (Y-axis) Vehicle longitudinal axis (X-axis).