Brake Disc Hub Connection Partial Contact Thermal Insulation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing brake disc/hub connections face challenges in heat transfer from the brake disc to the hub, leading to increased thermal load on the hub, which affects the service life and safety, and existing solutions for heat insulation are unsatisfactory and prone to dirt accumulation making disassembly difficult.
Innovation Solution
The brake disc/hub connection design features legs that only touch in partial areas, with transverse or longitudinal webs on one leg providing reduced contact surfaces for heat transfer while ensuring mechanical load transmission, and smooth outer surfaces to prevent dirt and corrosion, using stainless steel and non-cutting forming methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the legs are designed with full-surface contact to ensure mechanical load transmission, then the power transmission capability is improved, but the heat transfer from brake disc to hub increases
Solution Approach 1:
The contact surface between the two legs is segmented into discrete contact points or partial areas rather than full-surface contact. This segmentation reduces the continuous heat transfer path while maintaining sufficient mechanical load transmission capability through the distributed contact points.
Solution Approach 2:
Different areas of the leg surfaces are given different functions: specific localized contact areas provide mechanical load transmission, while the non-contact areas between these points allow heat isolation. The local contact zones are optimized for force transmission while the overall structure maintains thermal insulation.
2Temperature
If heat-insulating elements or separating layers are used to reduce heat transfer, then the thermal insulation is improved, but the structural complexity and manufacturing cost increase
Solution Approach 1:
The heat-insulating function is extracted from separate insulating elements or layers and integrated directly into the leg structure itself. The legs are designed with geometric features (partial surface contact, webs, contours) that inherently provide thermal insulation without requiring additional insulating materials or complex multi-layer constructions.
Solution Approach 2:
The legs are designed to perform multiple functions simultaneously: they transmit mechanical loads (support elements to drivers), provide thermal insulation (through partial surface contact design), and maintain structural integrity. This multi-functionality eliminates the need for separate dedicated insulating components.
3Temperature
If the legs are designed with partial surface contact to reduce heat transfer, then the thermal load on hub is reduced, but the mechanical load transmission capability may be compromised
Solution Approach 1:
The leg design incorporates flexibility and elastic deformation capabilities that allow the structure to adapt to varying mechanical loads. The partial surface contact areas are designed to deform elastically under load, ensuring consistent mechanical coupling between support elements and drivers while maintaining the thermal insulation benefit of reduced contact area.
Solution Approach 2:
The legs are made from materials with appropriate mechanical properties that combine sufficient strength and stiffness for load transmission with adequate elasticity for maintaining contact pressure. The material selection optimizes the balance between mechanical performance and thermal insulation characteristics.
4Object-affected harmful factors
If smooth full-surface outer sides are designed on legs, then dirt and corrosion prevention is improved, but the heat transfer area increases
Solution Approach 1:
The outer surfaces of the legs are designed with differentiated local qualities: the outer sides facing away from contact surfaces are made smooth and full-surface for corrosion and dirt resistance, while the inner contact surfaces between legs are designed with partial contact areas for heat isolation. This local differentiation allows each surface to optimize its specific function.
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 significantly reduces heat transfer and improves cooling by allowing air passage, enhancing the service life of the brake disc/hub connection while maintaining effective power transmission and ease of disassembly.
Implementation Method 1
the heat transfer is reduced by a significant factor, with the remaining contact surfaces of the two legs only having to be dimensioned depending on the mechanical load that occurs
Implementation Method 2
the contact of one limb only in partial areas on the other limb not only leads to a reduction in the surfaces effective for heat transfer, but also better cooling results from the gap formed between two partial areas, since air, especially headwind, can pass through unhindered
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The invention relates to a brake disc/hub connection, wherein a brake disc (1) has a plurality of support elements (4) uniformly distributed at the inner circumference thereof, said support elements corresponding to pushers (5) disposed on the outer circumference of a hub (2) in terms of a distortion lock, wherein intermediate elements (3) inserted in the axial direction of the brake disc (1) and having two adjoining legs are disposed in intermediate spaces formed between the pushers (5) and the support elements (4) for transmitting a braking torque, a corresponding pusher (5) and a corresponding support element (4) contacting the surfaces of said legs facing away from each other. The brake disc/hub connection is implemented such that protrusions (8) implemented on one leg (7) contact the other leg (6), said leg having a flat surface on one or both sides.