Stabilizer Bush Mounting for Vehicle Roll Stiffness
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Solution Overview
Problem
In vehicles using a sub-frame module for attaching left and right wheels, effective suppression of body rolling is challenging without compromising the productivity improvements gained from this modular attachment system, due to relative movement between the vehicle body and the sub-frame module caused by elastic deformation bushes.
Innovation Solution
The vehicle design incorporates a stabilizer supported by the sub-frame module, with a holder and bush system that allows the stabilizer to be fixed directly to the vehicle body, reducing relative movement and enhancing roll stiffness without additional assembly steps, using a tubular bush structure with elastic members and stoppers to maintain the stabilizer's position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a bush capable of elastic deformation is provided between the rear side frame and the rear sub-frame module, then direct contact between metal parts is prevented, but relative movement occurs between the vehicle body and the rear sub-frame module, making the vehicle body more likely to roll
Solution Approach 1:
The stabilizer acts as an intermediary element connecting the vehicle body and the rear sub-frame module. It is attached to the vehicle body at one end and to the link arms at the other end, providing a stabilizing force that counteracts the rolling motion caused by the elastic deformation of the bush, thus preventing direct metal contact while maintaining rolling stability
2Stability of the object's composition
If a stabilizer supported by the sub-frame is laid across the link arms, then the link arms are less likely to move in opposite phases, but relative movement still occurs between the vehicle body and the stabilizer due to the elastically deformable bush, making it difficult to suppress rolling effectively
Solution Approach 1:
The stabilizer is merged with the sub-frame module assembly by attaching it to the link arms, which are integral parts of the module. This integration ensures that the stabilizer moves with the link arms and effectively suppresses rolling motion, while the bush continues to provide elastic deformation capability for preventing direct metal contact
3Reliability
If the stabilizer is attached to the vehicle body via the elastically deformable bush, then the bush prevents direct metal contact, but relative movement occurs between the vehicle body and the stabilizer, allowing the vehicle body to roll to the left and right
Solution Approach 1:
The stabilizer serves as a mediator between the vehicle body and the rear sub-frame module. By attaching the stabilizer to the link arms rather than directly to the vehicle body through the elastic bush, the stabilizer maintains a fixed relationship with the module while the bush continues to provide its cushioning function, thus preventing rolling without direct metal contact
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 approach effectively suppresses body rolling during turns while maintaining the productivity benefits of the sub-frame module attachment, by directly attaching the stabilizer to the vehicle body through the bush system, reducing the need for separate stabilizer installation and minimizing the impact of elastic deformation on roll stability.
Implementation Method 1
a bush capable of elastic deformation must be provided between the rear side frame of the vehicle body and the rear sub-frame module
Data Source
AI summary
In a sub-frame module that is used to attach a set of left and right wheels in pair to a vehicle body, a sub-frame attached to the vehicle body and left and right hub carriers, to which the left and right wheels in pair are attached, are connected by left and right link arms to be capable of swinging. A stabilizer is laid across the left and right rear link arms, and a holder that holds the stabilizer is supported by an vehicle body side member that is provided in a bush attached to the vehicle body. The holder is fixed to the vehicle body by attaching the vehicle body side member to the vehicle body.