Lower Arm Bushing Replacement Tool with Stabilizing Adapter

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Existing tools for changing bushings on lower arms are inefficient, causing bushings to sway during replacement and potentially leading to safety issues and high costs due to the need to replace entire lower arms when a single bushing fails.

Innovation Solution

An assembly tool with a main shaft, adapter units, and safety components that stabilize the bushing during detachment and mounting, preventing swaying and allowing for on-site replacement of individual bushings, reducing costs and ensuring safety.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of repair

If a developed tool is used to replace bushings, then bushing replacement can be performed, but the bushing sways during replacement and safety problems may occur

Engineering Contradiction:
Improvebushing replacement capabilityVSAvoidsafety
Core Design Contradiction:
Ease of repairVSReliability

Solution Approach 1:

The patent introduces an adapter as an intermediary component between the tool and the bushing. The adapter includes a bushing receiving portion that securely holds the bushing and prevents it from swaying during replacement. This intermediary structure solves the safety problem while maintaining the bushing replacement capability

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The tool is divided into multiple functional segments: a main body, a detachable adapter, and a bushing receiving portion. This segmentation allows the adapter to be specifically designed to prevent bushing swaying while keeping the overall tool structure flexible and adaptable for different bushing types

Inventive Principle:
Principle #1Segmentation

2Reliability

If the entire lower arm is detached and replaced, then a new lower arm can be mounted, but costs increase and substantial time is required

Engineering Contradiction:
Improvelower arm functionalityVSAvoidreplacement time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The patent extracts only the defective bushing from the lower arm assembly and replaces it individually, rather than replacing the entire lower arm. The specialized tool enables direct access and replacement of the bushing while leaving the rest of the lower arm in place, significantly reducing replacement time and cost

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The tool is designed with specific local features including a bushing receiving portion and adapter structures that are tailored to match the geometry of the bushing and its mounting location. This localized design enables precise targeting of the defective component without affecting other parts of the lower arm

Inventive Principle:
Principle #3Local quality

3Reliability

If the entire lower arm is detached and replaced, then a new lower arm can be mounted, but costs increase due to high unit price

Engineering Contradiction:
Improvelower arm functionalityVSAvoidcost
Core Design Contradiction:
ReliabilityVSLoss of substance

Solution Approach 1:

The patent extracts only the defective bushing from the lower arm assembly and replaces it individually, rather than replacing the entire lower arm. The specialized tool enables direct access and replacement of the bushing while leaving the rest of the lower arm in place, significantly reducing replacement time and cost

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent enables recovery and reuse of the expensive lower arm by replacing only the inexpensive bushing component. The specialized tool facilitates this selective replacement, allowing the lower arm to be recovered and reused, thereby avoiding the cost of purchasing a new lower arm

Inventive Principle:
Principle #34Discarding and recovering

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

The tool enables stable and safe replacement of bushings without swaying, reducing the need for full lower arm replacement, thereby minimizing costs and enhancing operational efficiency.

Implementation Method 1

a main adapter assembling unit into which the main shaft may be inserted, the main adapter assembling unit being coupled by thread engagement to the main shaft to be movable in a longitudinal direction of the main shaft

Methodology Applied
Scientific EffectThread engagement: Screw

Data Source

PatentUS11583983B2Assembly tool for changing bushings for lower arm
Publication Date: 2023.02.21 HYUNDAI MOTOR CO LTD
  • US11583983B2 patent drawing
  • US11583983B2 patent drawing
  • US11583983B2 patent drawing

AI summary

An assembly tool for changing bushings for a lower arm includes a bushing connecting part into which a bushing is inserted and a main shaft inserted into components. A main adapter assembling unit supports or presses the bushing and a detachment adapter receives the bushing when detaching the bushing. A mounting adapter supports a first end of the bushing when mounting the bushing and a mounting guide ring guides an insertion depth of the bushing when mounting the bushing so that components used to change the bushings may be assembled in accordance with a shape of a lower arm on which the bushing is to be mounted.