Adhesive Stabilizer Bushing Axial Locking Design
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Solution Overview
Problem
Conventional stabilizer bushings for adhesive use face issues with the rubber elastic body displacing relative to the bracket in the axial direction, leading to noise and potential water ingress due to the inclined surfaces of the mountain portions and groove-like portions, which can result in the rubber elastic body being dislodged from the bracket.
Innovation Solution
The stabilizer bushing features concave/convex mated parts with varying mated height dimensions radially outward, locking the rubber elastic body and bracket in the axial direction and dispersing stress, thereby preventing axial displacement and noise, and includes a design with a first and second half body configuration and a rigid intermediate member for enhanced spring characteristics and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If mountain portions with inclined surfaces are provided on the rubber elastic body to prevent axial displacement, then axial stability is improved, but noise is generated due to rubbing against the bracket
Solution Approach 1:
The patent applies local quality by providing circumferentially extending grooves at specific axial positions (first groove at the axially outer end, second groove at the axially inner end) rather than uniform structures throughout. This localized groove configuration allows the rubber elastic body to deform axially without generating noise, as the grooves provide controlled deformation zones that prevent rubbing against the bracket while maintaining axial stability.
2Stability of the object's composition
If mountain portions are pressed axially against the bracket to resist displacement, then axial positioning is improved, but water ingress occurs due to gap formation from sinkage
Solution Approach 1:
The patent uses the flexible nature of the rubber elastic body with circumferential grooves to create a seal that conforms to the bracket surface. The grooves allow the rubber to deform and maintain continuous contact with the bracket, preventing gap formation and water ingress while still providing axial positioning resistance through the flexible rubber material itself rather than rigid mountain portions.
3Reliability
If the rubber elastic body is adhered to the stabilizer bar for vibration damping, then vibration damping performance is improved, but axial displacement relative to the bracket occurs
Solution Approach 1:
The patent segments the rubber elastic body by providing circumferential grooves that divide the rubber structure into distinct zones. This segmentation allows different portions of the rubber to perform different functions: the adhered portions maintain vibration damping while the grooved portions provide controlled axial deformation capability, preventing displacement relative to the bracket while preserving the vibration damping performance of the adhered sections.
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 design effectively prevents the rubber elastic body from being dislodged axially, reduces noise, and minimizes water ingress, while allowing for stable attachment and durable performance by dispersing radial loads and maintaining engagement between the rubber elastic body and bracket.
Implementation Method 1
a tubular rubber elastic body whose inner circumferential surface being configured to be adhered to a stabilizer bar
Implementation Method 2
a tubular rubber elastic body... configured to elastically deform
Implementation Method 3
the mountain portions of the rubber elastic body are pressed in the axial direction against axial wall portions of the groove-like portions of the bracket, thereby exhibiting a resistance force
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
A stabilizer bushing for adhesive use (12) including: a tubular rubber elastic body (16) whose inner circumferential surface being configured to be adhered to a stabilizer bar (14); a bracket (18) mounted onto an outer circumferential surface of the rubber elastic body (16) and configured to be attached to a vehicle body (74); and concave/convex mated parts (78) provided on axially opposite portions between the rubber elastic body (16) and the bracket (18), the concave/convex mated parts (78) protruding radially outward, wherein a mated height dimension of the concave/convex mated part (78) is varied in a circumferential direction, and is made small at a position of input of a main radial load in the rubber elastic body (16).