Brake Disk Conical Spring Axial Floating Design

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Solution Overview

Problem

Conventional brake disks have thickness limitations, poor stability due to small supporting area of corrugated springs, and are prone to damage and misassembly, with limited radial interaction and adjustability, leading to issues with dust ingress and elastic flexibility.

Innovation Solution

A brake disk design featuring an inner and outer annular member with a conical coil spring that abuts against both members, allowing axial floating movement and greater supporting area, with a spacing member to protect the spring and prevent misassembly, and a thinner profile due to aligned member sides and an identification portion for assembly correctness.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Length of moving object

If a conventional brake disk structure with inner plate and outer ring is used, then the brake disk provides basic braking function, but the axial thickness is great which creates spatial restriction during assembly

Engineering Contradiction:
Improveaxial thicknessVSAvoidassembly spatial restriction
Core Design Contradiction:
Length of moving objectVSEase of operation

Solution Approach 1:

The invention transitions from a conventional multi-component layered structure (inner plate + outer ring + fixing members) to an integrated monoblock structure where the brake disk is formed as a single piece. This dimensional simplification eliminates the need for multiple assembly layers, reducing axial thickness from the sum of multiple component thicknesses to a single optimized thickness, thereby resolving the spatial restriction issue during assembly.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Stability of the object's composition

If the brake disk uses fixed positioning of members, then the structure is stable, but the members cannot move repositionably causing gaps and collision abrasion

Engineering Contradiction:
Improvemember positioning stabilityVSAvoidmember collision and abrasion resistance
Core Design Contradiction:
Stability of the object's compositionVSReliability

Solution Approach 1:

The invention introduces a dynamic adjustment mechanism through threaded holes and adjustment members that allow the brake disk members to be repositioned axially. This dynamic capability enables the members to move and self-adjust their positions, eliminating fixed positioning gaps and preventing collision-induced abrasion while maintaining operational stability through controlled adjustability.

Inventive Principle:
Principle #15Dynamics

3Device complexity

If a flat securing disk is used without circumferential wall, then the structure is simple, but dust and particles can easily enter the gap between the disk and rings causing damage

Engineering Contradiction:
Improvesecuring disk structure simplicityVSAvoiddust and particle ingress
Core Design Contradiction:
Device complexityVSObject-affected harmful factors

Solution Approach 1:

The invention employs a circumferential wall structure that forms a protective enclosure around the gap between the securing disk and brake disk rings. This wall acts as a physical barrier preventing dust and particles from entering the critical interface, while the overall structure remains relatively simple by integrating the wall into the existing securing disk design rather than adding completely separate protective components.

Inventive Principle:
Principle #30Flexible shells and thin films

4Adaptability or versatility

If a corrugated spring is used for elastic support, then the structure provides some elasticity, but the supporting area is small and stability is poor

Engineering Contradiction:
Improveelastic flexibilityVSAvoidspring supporting stability
Core Design Contradiction:
Adaptability or versatilityVSStability of the object's composition

Solution Approach 1:

The invention transitions from a corrugated spring with limited contact points to a helical coil spring that provides continuous annular contact along its entire circumference. This dimensional change from discrete convex portions to continuous spiral geometry dramatically increases the supporting area and distributes the elastic load uniformly, thereby improving both the adaptability for elastic flexibility and the stability of the supporting structure.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

5Adaptability or versatility

If a cylindrical coil spring is used, then the spring provides elastic force, but the coils stack when depressed increasing the thickness

Engineering Contradiction:
Improveelastic force provisionVSAvoidspring thickness when depressed
Core Design Contradiction:
Adaptability or versatilityVSLength of moving object

Solution Approach 1:

The invention employs a conical coil spring geometry where the spring coils are arranged in a tapered configuration rather than a uniform cylindrical shape. This curvature variation allows the spring to compress more efficiently in the axial direction, distributing the deformation across the conical structure and preventing coil stacking, thereby maintaining a more compact depressed thickness while still providing the necessary elastic force.

Inventive Principle:
Principle #14Spheroidality (Curvature)

6Stability of the object's composition

If the disk is fixedly radially engaged within the bolt, then the structure is stable, but the disk cannot be adjusted or move relative to the bolt limiting elastic flexibility

Engineering Contradiction:
Improveradial engagement stabilityVSAvoidelastic flexibility adjustability
Core Design Contradiction:
Stability of the object's compositionVSAdaptability or versatility

Solution Approach 1:

The invention introduces adjustable radial engagement through threaded connection mechanisms that allow the brake disk to move axially relative to the mounting bolt. This dynamic adjustment capability enables the elastic components to be properly positioned and the disk to achieve optimal floating movement, thereby providing both radial engagement stability and elastic flexibility adjustability simultaneously.

Inventive Principle:
Principle #15Dynamics

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 design enhances stability and elasticity with a larger supporting area, reduces thickness, prevents damage from dust and water, and allows for adjustable elastic force and real-time frictional contact, while preventing misassembly and dust ingress.

Implementation Method 1

a helical spring, which has a greater supporting area and flexibility, to float stably and elastically

Methodology Applied
Scientific EffectElasticity: Elasticity

Implementation Method 2

the spring is a conical coil spring and that the helical spring continuously annularly abutting against the first assembling mechanism of the inner annular member and the second assembling mechanism of the outer annular member

Methodology Applied
Scientific EffectSpring: Spring

Implementation Method 3

for good and real-time frictional contact of the outer annular member with the brake disk

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentUS10145430B2Brake disk
Publication Date: 2018.12.04 CHEN HUI CHUAN
  • US10145430B2 patent drawing
  • US10145430B2 patent drawing
  • US10145430B2 patent drawing

AI summary

A brake disk includes: a disk portion, having a first side face and a second side face facing opposite to the first side face, the first side face being for being assembled with a wheel and facing the wheel, the disk portion including an inner annular member and an outer annular member, the inner annular member being circumferentially formed with a first assembling mechanism, the outer annular member having a second assembling mechanism, the first assembling mechanism and the second assembling mechanism being correspondingly connected with each other; at least two connecting assemblies, being connected with the first assembling mechanism and the second assembling mechanism respectively, each connecting assembly including a helical spring, the helical spring being on the first side face and abutting against between the connecting assembly and the first side face.