Steering Rod Sensor Drive With Cycloidal Reduction Gear
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Solution Overview
Problem
Existing steering systems face challenges in reducing installation space requirements and achieving high transmission ratios while maintaining a compact design.
Innovation Solution
The use of a cycloidal gear as a reduction gear in the steering system, which allows for a compact construction and high reduction ratios, thereby reducing installation space requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If conventional gearwheel elements are used to achieve high reduction ratios, then the transmission ratio is improved, but the installation space requirement increases due to large diameter
Solution Approach 1:
The patent changes the fundamental geometric parameters of the gear mechanism by using cycloidal gear profiles instead of conventional circular gearwheel elements. This parameter change enables achieving high reduction ratios with significantly reduced outer dimensions, directly resolving the contradiction between transmission ratio and installation space requirement
Solution Approach 2:
The invention employs cycloidal curves with specific curvature characteristics to define the gear tooth profiles. The cycloidal geometry allows for compact tooth engagement that achieves high reduction ratios without requiring large diameter gearwheel elements, thus reducing the installation space while maintaining the desired transmission ratio
2Area of stationary object
If the diameter of gearwheel elements is reduced to save installation space, then the installation space requirement is improved, but the achievable transmission ratio decreases
Solution Approach 1:
By changing to cycloidal gear parameters and profiles, the system achieves a different geometric relationship where small diameter elements can produce high reduction ratios. The cycloidal tooth engagement mechanism fundamentally alters the parameter relationship between diameter and transmission ratio, allowing compact dimensions without sacrificing transmission capability
3Power
If conventional gearwheel elements with large diameter are used, then high transmission ratios are achieved, but the device complexity and installation space increase
Solution Approach 1:
The patent applies parameter changes by adopting cycloidal gear geometry with specific mathematical relationships between tooth profiles, eccentricity, and pitch circles. This parameter transformation enables high reduction ratios to be achieved through a single compact stage rather than multiple larger stages, reducing overall device complexity
Solution Approach 2:
The cycloidal gear design allows for nested arrangement where the reduction mechanism can be integrated within compact boundaries. The gear elements can be arranged concentrically or in nested configurations, reducing the overall footprint and simplifying the mechanical layout compared to conventional large-diameter gearwheel arrangements
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 cycloidal gear enables a compact and installation space-saving steering system that can achieve high transmission ratios, effectively addressing the challenges of space constraints and transmission efficiency.
Implementation Method 1
the reduction gear is in the form of a cycloidal gear
Data Source
AI summary
The disclosure relates to a steering system having a steering rod and a drive, wherein the drive is connected to the steering rod by a transmission for moving the latter, and having a sensor device for sensing a position of the steering rod. The sensor device is connected to the transmission by at least one reduction gear and/or the sensor device has at least one reduction gear for connecting to the transmission. In order to reduce the installation space requirement and/or for it to be possible to create a high transmission ratio, in the steering system, the reduction gear is in the form of a cycloidal gear.