Stabilizer Bush Noise Suppression via Rubber Bulging
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Solution Overview
Problem
Conventional stabilizer bushes with mounting bases suffer from circumferential displacement due to external forces, leading to noise issues from striking between the mounting base and bracket, which is difficult to prevent due to part tolerance and gap fitting challenges.
Innovation Solution
A stabilizer bush design featuring a tubular rubber bushing body with a shock-absorbing rubber part that compresses and bulges to interpose between the mounting base and bracket, preventing direct contact and incorporating concave-convex interlocking portions and R-chamfered corners for enhanced deformation and fitting, along with a locking portion for assembly stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the mounting base is fitted to the bracket with no gap to prevent circumferential displacement, then the stability is improved, but it becomes difficult to implement due to part tolerance and gap fitting challenges
Solution Approach 1:
The patent changes the physical state of the rubber bushing body by compressing it radially inward, causing it to bulge outward in the width direction and enter the gap between the mounting base and bracket. This parameter change (compression → bulging → gap entry) resolves the contradiction by enabling stable fitting without requiring precise manufacturing tolerances
Solution Approach 2:
The rubber bushing body acts as an intermediary element that absorbs the tolerance variations between the mounting base and bracket. By deforming to fill the gap, it mediates the fit between these two components, preventing circumferential displacement without requiring tight manufacturing tolerances
2Reliability
If the mounting base is fixed on the rubber bushing body, then the mounting stability is improved, but circumferential displacement occurs due to external force from torsional deformation, causing noise from striking between the mounting base and bracket
Solution Approach 1:
The patent applies beforehand cushioning by pre-compressing the rubber bushing body radially inward so that it bulges outward to fill the gap between the mounting base and bracket before any torsional deformation occurs. This prior cushioning prevents the mounting base from striking the bracket during operation, eliminating noise while maintaining mounting stability
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
Effectively suppresses abnormal noise by ensuring the shock-absorbing rubber part enters the gap between the mounting base and bracket, maintaining close contact and reducing noise generation even under torsional deformation.
Implementation Method 1
the rubber bushing body includes a shock absorbing rubber part that is elastically deformed due to a compression force caused by pressing of the bracket
Data Source
AI summary
A stabilizer bush including: a tubular rubber bushing body having an inner hole for inserting a stabilizer bar; and a mounting base provided on a fixing surface of the rubber bushing body against a vehicle body. The stabilizer bush is configured to be installed on the vehicle body such that an outer peripheral surface of the rubber bushing body is press-fitted on a side of the vehicle body via the mounting base by a roughly U-shaped bracket to be fixed to the vehicle body. The rubber bushing body includes a shock absorbing rubber part that is elastically deformed due to a compression force caused by pressing of the bracket, bulges to both sides in the width direction of the mounting base, and enters and interposes between the mounting base and the bracket.