Corner Module Bush Structure for 360-Degree Steering Vibration Isolation
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Solution Overview
Problem
Existing steering apparatuses for vehicles are limited in steering angle and cannot independently steer left and right wheels, and corner modules for 360-degree wheel rotation face challenges in effectively insulating vibration while maintaining wheel and tire rigidity.
Innovation Solution
A corner module configuration that includes a steering unit with torque from a steering motor, multiple dampers connected between the steering unit and the wheel, and a vibration insulation structure with stacked lower and upper bushes of varying hardnesses to ensure effective vibration insulation and rigidity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a corner module is installed individually for each wheel to enable 360-degree rotation, then steering angle and mobility are improved, but vibration insulation becomes difficult while maintaining wheel and tire rigidity
Solution Approach 1:
The patent applies local quality by using vibration insulators with different hardness values at different locations. Specifically, the front vibration insulator has a first hardness value while the rear vibration insulator has a second hardness value, allowing each location to be optimized for its specific vibration characteristics and load conditions while maintaining overall wheel rigidity
Solution Approach 2:
The patent employs composite materials by combining vibration insulators made of different materials or with different hardness values at the front and rear connections. This allows the system to achieve both vibration insulation and structural rigidity through material composition rather than relying on a single material property
2Object-affected harmful factors
If vibration insulators with different hardnesses are used at front and rear connections, then vibration insulation is improved, but manufacturing complexity increases
Solution Approach 1:
The patent segments the vibration insulation function into separate front and rear vibration insulators with different hardness values. This segmentation allows each insulator to be independently manufactured and optimized, potentially simplifying the overall manufacturing process compared to creating a single complex insulation system
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 solution effectively insulates vibration, ensures the rigidity of wheels and tires, and allows for independent wheel steering, improving vehicle mobility and design flexibility by adjusting wheel alignment characteristics.
Implementation Method 1
a vibration insulation structure in which a lower bush and an upper bush are stacked up and down at a portion where the steering unit and each of the dampers are connected to each other so that vibration insulation is ensured
Implementation Method 2
a vibration insulation structure configured to have different hardnesses at portions where the steering unit and each of the dampers are connected
Data Source
AI summary
An embodiment corner module includes a steering unit configured to receive torque from a steering motor, a damper connected to the steering unit and connectable to a wheel, and a vibration insulation structure disposed at a portion where the steering unit and the damper are connected to each other, wherein the vibration insulation structure includes a lower bush and an upper bush stacked in a vertical direction.