Coaxial Stabilizer Shock Absorber Connection Suppressing Rocking

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Conventional suspension structures experience rocking of the shock absorber due to different forces received from the wheel in the roll direction and axial direction, which affects the stability and comfort of vehicles.

Innovation Solution

The lower end portion of the shock absorber and the wheel side end portion of the stabilizer are made coaxial, with the stabilizer's reactive force acting as a bending moment on the shock absorber, suppressing rocking and improving stability by connecting the stabilizer's end portion to the lower end of the shock absorber and using a suspension arm with supporting plates that provide increased rigidity and elastic support.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If the stabilizer and shock absorber are connected at non-coaxial points, then the suspension structure can be simpler to manufacture, but the shock absorber experiences rocking motion reducing stability

Engineering Contradiction:
Improvestability of shock absorberVSAvoidcomplexity of connection structure
Core Design Contradiction:
Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The patent applies asymmetry by making the connection between the stabilizer and shock absorber coaxial, creating a symmetric alignment along the axial line. This coaxial connection point arrangement eliminates the rocking motion of the shock absorber that would occur with asymmetric, non-coaxial connections, thereby improving stability while maintaining manufacturing simplicity.

Inventive Principle:
Principle #4Asymmetry

2Stability of the object's composition

If the stabilizer reactive force acts as a bending moment on the shock absorber, then rocking is suppressed, but the structural complexity increases

Engineering Contradiction:
Improvesuppression of rocking motionVSAvoidcomplexity of force transmission structure
Core Design Contradiction:
Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The patent creates an equipotential condition by aligning the stabilizer connection point with the shock absorber's axial line. This coaxial arrangement ensures that the reactive force from the stabilizer acts directly along the same line as the shock absorber's primary force vector, converting what would be a destabilizing bending moment into a beneficial stabilizing force that suppresses rocking motion without adding structural complexity.

Inventive Principle:
Principle #12Equipotentiality

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 configuration reduces vehicle roll and enhances comfort by suppressing rocking of the shock absorber and increasing the efficiency of the stabilizer, while maintaining layout flexibility and reducing weight through material selection like aluminum and iron.

Implementation Method 1

a shock absorber for dampening the vibration from a wheel

Methodology Applied
Scientific EffectDamping: Damping

Implementation Method 2

a stabilizer for suppressing the up/down strokes in opposite phases generated from the opposing wheels

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentEP1867501B1Suspension Structure
Publication Date: 2012.01.11 NISSAN MOTOR CO LTD
  • EP1867501B1 patent drawingFigure 1
  • EP1867501B1 patent drawingFigure 2
  • EP1867501B1 patent drawingFigure 3

AI summary

A suspension structure is provided having a shock absorber for dampening the vibration from a wheel and a stabilizer for suppressing the up and down strokes in opposite phases generated from opposing wheels on a vehicle. The end portion of the stabilizer is connected to the lower end portion of the shock absorber.