Segmented Sintered Friction Lining for Organic Carrier Geometry

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Solution Overview

Problem

Inorganic friction coverings, known for their wear resistance and temperature resistance, cannot be used in the standard organic structure of clutch discs or ribbons due to geometric incompatibility with existing carrier elements for organic friction coverings.

Innovation Solution

The friction covering segments are angled between 25° and 55°, with fastening taps arranged alternately in the circumference, allowing them to be attached to positions designed for organic friction coverings, and optionally incorporating spring elements for enhanced attachment and reduced mass, enabling the use of sintering coverings in organic friction devices.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If inorganic friction coverings (sintering materials) are used, then wear resistance and temperature resistance are improved, but geometric incompatibility with existing carrier elements prevents their use in organic friction device structures

Engineering Contradiction:

Improvewear resistanceVSAvoidgeometric compatibility

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The friction covering is divided into multiple friction covering segments (8) with angle covers between 25° and 55°, which are arranged on the carrier element. This segmentation allows the rigid sintering material to be adapted to the curved surface of the carrier element, resolving the geometric incompatibility while maintaining the wear and temperature resistance benefits of inorganic materials.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The friction covering segments are mounted on fastening taps (11) that are themselves attached to the carrier element (5). This nested arrangement allows the inorganic friction covering to be integrated into the existing organic friction device structure, enabling geometric compatibility while preserving the performance advantages of sintering materials.

Inventive Principle:

Principle #7Nested doll (Nesting)

2Temperature

If inorganic friction coverings are used, then temperature resistance is improved, but the mass distribution on the carrier element becomes unbalanced

Engineering Contradiction:

Improvetemperature resistanceVSAvoidmass distribution

Core Design Contradiction:

TemperatureVSWeight of moving object

Solution Approach 1:

By dividing the friction covering into segments with controlled angle covers (25°-55°), the mass distribution can be optimized to maintain rotational balance while still providing sufficient friction surface area for temperature resistance and wear protection.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The friction covering segments are strategically positioned on the carrier element, with fastening taps arranged alternately in the circumference. This local arrangement allows for optimized mass distribution and rotational balance while concentrating the temperature-resistant sintering material where it is most needed for friction performance.

Inventive Principle:

Principle #3Local quality

3Ease of manufacture

If friction covering segments with small angle cover are used, then easier attachment to carrier element is achieved, but friction surface area is reduced

Engineering Contradiction:

Improveattachment easeVSAvoidfriction surface area

Core Design Contradiction:

Ease of manufactureVSArea of stationary object

Solution Approach 1:

Multiple friction covering segments with moderate angle covers (25°-55°) are arranged around the carrier element. This partial coverage approach ensures easy attachment to the standard carrier element geometry while collectively providing sufficient total friction surface area for effective braking or coupling operation.

Inventive Principle:

Principle #16Partial or excessive action

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 configuration allows for the easy integration of organic friction coverings with sintering coverings in couplings or brakes, extending their useful life and adapting to different operational conditions, including temperature control and wear resistance.

Implementation Method 1

frictional surface segments... produces frictional power

Methodology Applied

Scientific EffectFriction: Friction

Implementation Method 2

fastening taps or covering spring elements... retain a certain elasticity

Methodology Applied

Scientific EffectElasticity: Elasticity

Data Source

PatentEP3841309B1Friction device

Publication Date: 2022.10.12 MIBA FRICTEC

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AI summary

The invention relates to a friction device with a carrier element (5) and friction lining segments (8) which are arranged thereon, wherein the friction lining segments (8) comprise in each case one sintered friction lining (16) which is arranged on a friction lining carrier (17), the friction lining carrier (17) is connected to the carrier element (5), and the carrier element (5) preferably has a plurality of fastening brackets (11) and/or lining spring elements for the friction lining segments (8), characterized in that, in the embodiment of the carrier element (5) with the fastening brackets (11) and/or lining spring elements, the friction lining segments (8) connect in each case two fastening brackets (11) or two lining spring elements to one another, and/or in that the friction lining segments (8) have an angular overlap of between 25° and 55°.