Stabilizer Bearing Line Routing via Nested Subframe Protection

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Solution Overview

Problem

The challenge in motor vehicle chassis stabilizer arrangements is protecting flexible supply lines from damage due to relative movements and external influences while minimizing route length for cost and weight efficiency, particularly in the region of wheel suspension where lines are exposed to significant stress and risk of damage.

Innovation Solution

Guiding flexible lines through openings in the stabilizer bearing, which are protected by the subframe, allowing direct and short routing without additional protection needed within the bearing, and utilizing a rubber-elastic material for the bearing with optional metal sheathing for enhanced protection and acoustic decoupling.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If flexible lines are routed through the stabilizer bearing with openings, then protection against damage is improved and route length is reduced, but the stabilizer bearing structure becomes more complex

Engineering Contradiction:

Improveprotection against damageVSAvoidstabilizer bearing structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The flexible lines are routed through openings in the stabilizer bearing, nesting the line protection function within the existing stabilizer bearing structure. The subframe provides additional protection by covering the stabilizer bearing from below, creating a nested protective arrangement without requiring separate external protection structures.

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The stabilizer bearing is designed to serve multiple functions: it provides stabilizer support, allows flexible line passage through its openings, and works in conjunction with the subframe to provide protected routing. This multi-functionality reduces the need for separate dedicated protection structures.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Reliability

If additional protection structures are added for the flexible lines, then protection against damage is improved, but weight and cost increase

Engineering Contradiction:

Improveprotection against damageVSAvoidvehicle weight

Core Design Contradiction:

ReliabilityVSWeight of moving object

Solution Approach 1:

The protection for flexible lines is merged with existing vehicle structures. The subframe, which already provides structural support, is utilized to cover the stabilizer bearing from below, providing line protection without adding separate dedicated protection components. This merging approach avoids additional weight while maintaining protection.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The stabilizer bearing and subframe provide protection for the flexible lines as part of their own structural functions. The bearing's openings guide the lines through protected regions, and the subframe's coverage provides additional protection, allowing these components to serve both their primary functions and line protection functions simultaneously.

Inventive Principle:

Principle #25Self-service

3Reliability

If flexible lines are routed over long paths to avoid exposure, then protection against damage is improved, but route length and weight increase

Engineering Contradiction:

Improveprotection against damageVSAvoidline route length

Core Design Contradiction:

ReliabilityVSLength of moving object

Solution Approach 1:

The flexible lines are nested within the protected region formed by the stabilizer bearing and subframe combination. The lines pass through openings in the bearing that are positioned to utilize the protected space within the stabilizer assembly, allowing short routing while maintaining protection from external influences and relative movements.

Inventive Principle:

Principle #7Nested doll (Nesting)

4Ease of manufacture

If openings are added in the stabilizer bearing for line guidance, then line routing is simplified and route length is reduced, but the bearing structure becomes more complex

Engineering Contradiction:

Improveline routingVSAvoidstabilizer bearing structure

Core Design Contradiction:

Ease of manufactureVSDevice complexity

Solution Approach 1:

The stabilizer bearing is segmented to include multiple openings at different positions (top, bottom, left, right) that can accommodate one or more flexible lines. This segmentation allows independent routing of lines through specific openings while maintaining the overall integrity and function of the bearing structure.

Inventive Principle:

Principle #1Segmentation

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 solution ensures secure protection of flexible lines with reduced route lengths, saving costs and weight, and increases rigidity by eliminating the need for additional bores, while maintaining effective protection against damage and external influences.

Implementation Method 1

advantages relating to the acoustic decoupling of the components arise through the solution

Methodology Applied

Scientific EffectAcoustic decoupling: Damping

Data Source

PatentUS8833778B2Stabilizer arrangement for a chassis of a motor vehicle

Publication Date: 2014.09.16 DR ING H C F PORSCHE AG

AI summary

A stabilizer arrangement for a chassis of a motor vehicle, including at least one element, which entirely or partially compensates for vehicle movements, in the region of a wheel suspension connected to the stabilizer arrangement, wherein the element is activatable via flexible lines wherein the flexible lines can be guided by a central control unit via openings arranged in the stabilizer bearing substantially below the stabilizer, as seen in the vertical direction of the vehicle, to the element interacting with a stabilizer.