Clutch Lining Disc Abutment Means for Elastomer Protection
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Solution Overview
Problem
Existing clutch disc lining carrier disks with elastomeric progressive means are prone to irreversible degradation under axial overload and thermal stress, leading to reduced progressiveness and potential torque transmission faults.
Innovation Solution
Incorporating abutment means on the internal face of the support elements to limit elastic deformation and protect the elastomeric progressive means, while also providing axial and circumferential stiffening to manage thermal gradients and maintain effective progressiveness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If elastomeric progressive means are used in clutch discs, then progressiveness and torque distribution are improved, but the elastomeric material is susceptible to irreversible degradation under axial overload
Solution Approach 1:
The invention introduces abutment means that project axially from the support elements to limit the compression travel of the elastomeric progressive means. This beforehand cushioning prevents the elastomeric material from experiencing overpressures that would cause irreversible degradation, while still allowing sufficient compression stroke for normal progressive operation. The abutment means act as a mechanical stop that cushions the elastomeric material against excessive axial loads before damage can occur.
2Reliability
If the elastomeric progressive means are allowed to compress freely, then progressiveness is maintained, but thermal gradients cause geometric deformations of the metal supports
Solution Approach 1:
The invention segments the support elements by introducing abutment means that project axially from the metal support structures. These abutment means create discrete contact points that stiffen the support elements against thermal deformation while leaving the elastomeric progressive means intact for progressiveness. The segmentation allows the metal supports to resist thermal gradient-induced deformations without compromising the elastic compression capability of the elastomeric material.
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 abutment means effectively prevent irreversible deformation of the elastomeric progressive means, ensuring consistent torque transmission and improved durability under overload conditions, with a clamping stroke limitation that maintains linear deformation characteristics and enhances the overall stiffness of the lining-carrying disk.
Implementation Method 1
means of progressiveness made of elastomeric material, forming a spring, interposed between the internal faces of the annular peripheral portions
Implementation Method 2
abutment means projecting axially towards the other support element so as to limit the travel clamping the support elements towards each other
Implementation Method 3
friction linings adapted to rub against the pressure and reaction plates
Data Source
Figure 1~2
Figure 3~6
Figure 7~10b
AI summary
The invention relates to a lining-holder disc (1) for a clutch disc, comprising two parallel supporting elements (2a, 2b) including an annular peripheral portion (3) having an outer surface for receiving a friction lining (6) and an inner surface engaging with a smooth engagement means (5a, 5b, 5c), and means (4) for linking to the clutch disc, extending radially inwards, abutment means (7a, 7b) projecting axially towards the other supporting element (2b, 2a) such as to limit the clamping range of the supporting elements (2a, 2b) towards one another, and smooth engagement means (5a, 5b, 5c) made of an elastomer material, forming a spring, inserted between the inner surfaces of the annular peripheral portions (3).