Vehicle Disk Rotor Assembly Thermal Deformation

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Conventional disk rotor assemblies in vehicles are prone to heat deformation and cracking due to the integral formation of the adaptor and disk rotor, which restricts heat dissipation and leads to thermal deformation.

Innovation Solution

A disk rotor assembly design where the adaptor and disk rotor are manufactured separately and connected through a transmitter and engaging member, allowing for independent movement and reducing heat deformation by distributing the load and heat more effectively.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If the adaptor and disk rotor are integrally formed, then the structural strength and rigidity are improved, but heat deformation and heat crack occur due to restricted heat dissipation

Engineering Contradiction:
Improvestructural strengthVSAvoidheat deformation
Core Design Contradiction:
StrengthVSObject-affected harmful factors

Solution Approach 1:

The patent divides the integral structure into separate components: the adaptor and the disk rotor are manufactured independently and connected through a transmitter and engaging member. This segmentation allows each component to expand and contract independently during braking, preventing heat deformation and heat cracks while maintaining structural integrity through the engagement mechanism.

Inventive Principle:
Principle #1Segmentation

2Ease of manufacture

If the adaptor and disk rotor are integrally formed, then the manufacturing process is simplified, but the durability decreases due to heat crack

Engineering Contradiction:
Improvemanufacturing simplicityVSAvoiddurability
Core Design Contradiction:
Ease of manufactureVSReliability

Solution Approach 1:

By separating the adaptor and disk rotor into independent components connected via a transmitter, the patent enables each part to be manufactured separately with optimized materials and processes. The transmitter acts as a buffer that accommodates thermal expansion differences, thereby preventing heat cracks and improving durability while maintaining manufacturing feasibility through modular assembly.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The transmitter serves as an intermediary component between the adaptor and disk rotor. It absorbs and distributes thermal stress, preventing direct heat transfer that would cause cracking. This mediator allows both components to maintain their structural integrity while enabling effective heat dissipation from the disk rotor during braking operations.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Stability of the object's composition

If the adaptor and disk rotor are integrally formed, then the structural rigidity is improved, but heat dissipation is restricted leading to thermal deformation

Engineering Contradiction:
Improvestructural rigidityVSAvoidheat dissipation
Core Design Contradiction:
Stability of the object's compositionVSTemperature

Solution Approach 1:

The patent segments the thermal management system by separating the heat-generating disk rotor from the adaptor. The disk rotor can now dissipate heat independently through its own structure and surface area, while the adaptor maintains structural rigidity. The transmitter connection allows minimal thermal transfer while preserving mechanical strength.

Inventive Principle:
Principle #1Segmentation

4Object-affected harmful factors

If the adaptor and disk rotor are separated and connected through transmitter and engaging member, then heat deformation is reduced, but the device complexity increases

Engineering Contradiction:
Improveheat deformationVSAvoidstructural complexity
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The transmitter acts as a compact intermediary component that provides both mechanical connection and thermal buffering between the adaptor and disk rotor. Despite adding a component, the overall assembly remains manageable in size and complexity. The transmitter's design integrates multiple functions: torque transmission, thermal isolation, and mechanical engagement, thereby limiting the increase in device complexity while effectively reducing heat deformation.

Inventive Principle:
Principle #24Intermediary (Mediator)

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 prevents heat cracking of the disk rotor and enhances the durability of both the adaptor and disk rotor by allowing for independent heat dissipation and load distribution, thereby improving the overall braking performance and marketability.

Implementation Method 1

a transmitter engaging the adaptor with the disk rotor and adapted to transmit the torque received by the adaptor to the disk rotor or to transmit the braking force generated by the disk rotor to the adaptor

Methodology Applied
Scientific EffectTorque transmission: Torque

Implementation Method 2

a braking apparatus of a vehicle converts kinetic energy into heat energy by friction so as to lower the vehicle's speed

Methodology Applied
Scientific EffectFriction: Friction

Implementation Method 3

a temperature of the disk rotor is raised higher than 400° C. by friction between the brake pad and the disk rotor

Methodology Applied
Scientific EffectHeat conduction: Conduction (thermal)

Data Source

PatentUS8651249B2Disc rotor assembly for vehicle
Publication Date: 2014.02.18 HYUNDAI MOTOR CO LTD
  • US8651249B2 patent drawing
  • US8651249B2 patent drawing
  • US8651249B2 patent drawing

AI summary

A disk rotor assembly for a vehicle may include an adaptor adapted to be mounted on a hub and to receive torque of a wheel, a disk rotor generating a braking force, a transmitter engaging the adaptor with the disk rotor and adapted to transmit the torque received by the adaptor to the disk rotor or to transmit the braking force generated by the disk rotor to the adaptor, and engaging member for engaging the adaptor, the disk rotor, and the transmitter altogether.