Steer-By-Wire Gearbox Sensing for Rack Position Detection
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Solution Overview
Problem
The existing steer-by-wire steering apparatus requires a pinion gear and support yoke to detect the position of the rack bar, increasing the number of parts and complicating the assembly process, leading to inefficiencies and higher costs.
Innovation Solution
A steer-by-wire steering apparatus that removes the pinion gear and uses a sensor to detect the position of the slide bar based on rotation information from the gearbox, which transfers rotational force from the motor to the slide bar, reducing the number of parts and simplifying the assembly process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a pinion gear and support yoke are used to detect the position of the rack bar, then the detection function is achieved, but the number of parts increases and the assembly process becomes complicated
Solution Approach 1:
The patent extracts and removes the pinion gear and support yoke from the traditional steering system. Instead of using these separate mechanical components for position detection, the invention directly utilizes the gearbox's existing rotational movement to detect the slide bar position, thereby reducing the number of parts and simplifying assembly while maintaining detection functionality
Solution Approach 2:
The gearbox is given a dual function: it not only transfers rotational force from the motor to the slide bar but also serves as the basis for position detection. By detecting the rotational information from the gearbox, the system achieves position detection without requiring additional dedicated detection mechanisms, thus reducing overall system complexity
2Measurement precision
If a pinion gear is provided to determine the position of the rack bar, then position detection is enabled, but costs increase due to the increased number of parts
Solution Approach 1:
The gearbox performs multiple functions including force transmission and position detection. By utilizing the gearbox's rotational information for detection purposes, the system eliminates the need for separate detection components like pinion gears, thereby reducing part count and manufacturing costs while maintaining detection capability
Solution Approach 2:
The patent removes the pinion gear component entirely, extracting only the necessary detection function from the mechanical system and implementing it through electronic sensing of the gearbox's rotational movement, which reduces both parts count and manufacturing complexity
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
This solution allows for the detection of the slide bar position without a pinion gear, reducing the number of parts and simplifying the assembly process, thereby significantly reducing costs and improving manufacturing efficiency.
Implementation Method 1
a sensor detecting rotation information from the gear box and detecting a movement position of the slide bar based on the rotation information
Data Source
AI summary
The present embodiments may provide a steer-by-wire type steering apparatus which can significantly reduce production cost by reducing the number of components and simplifying the assembly procedure, by eliminating a pinion gear, etc., and sensing the position of a sliding bar on the basis of rotation information detected from a gear box which transfers the rotational force of a motor to the sliding bar.