Brake Lining Blind-Bore Pin Fastening Against Detachment
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Solution Overview
Problem
Existing brake lining arrangements for motor vehicle disk brakes face instability and potential detachment issues due to inadequate fastening methods, particularly when additional fastening means like adhesives fail.
Innovation Solution
A brake lining arrangement featuring a friction lining with a blind bore and a connecting pin that engages radially without play into the bore, providing a positively locking connection, which can be configured through pressing or other simple methods, ensuring a stable attachment to the rear plate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If adhesive bonding is used to connect the friction lining and rear plate, then the connection can be simple, but the reliability is insufficient when the adhesive fails
Solution Approach 1:
The patent implements a backup mechanical fastening system (connecting pins with blind bores) that activates when the primary adhesive bonding fails. This beforehand cushioning ensures that the friction lining remains securely attached to the rear plate even after adhesive degradation, addressing the reliability concern while maintaining manufacturing simplicity through the integration of both fastening methods
2Ease of manufacture
If hook-shaped fastening means are used on the bearing face, then the friction lining can be fastened, but the connection stability is insufficient
Solution Approach 1:
Instead of having hooks on the bearing face of the rear plate engaging the friction lining, the patent inverts the approach by placing blind bores in the friction lining and having connecting pins project from the rear plate. This inversion creates a more stable mechanical interlock where the pins engage radially into the blind bores, preventing detachment while maintaining ease of manufacture through simple drilling or pressing operations
3Strength
If rivets are used to connect the friction lining and rear plate, then the connection can be strong, but the manufacturing complexity increases
Solution Approach 1:
The patent extracts the essential fastening function from complex rivet systems and implements it through simpler connecting pins that can be pressed or driven into blind bores. This extraction maintains the strong mechanical connection needed for brake lining applications while significantly reducing manufacturing complexity by eliminating the need for rivet setting equipment and complex fastening procedures
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 solution achieves a stable and secure connection between the friction lining and the rear plate, preventing detachment even if other fastening means fail, while allowing for simple and cost-effective production.
Implementation Method 1
the connecting pin engages at least substantially without play into the cutout, in particular radially... with the configuration of an interference fit
Implementation Method 2
The connecting pin is pressed into the blind bore... As viewed in its longitudinal direction, the connecting pin is preferably pressed into the blind bore or is arranged in the blind bore at a depth or penetration depth of from 1 mm to 5 mm
Data Source
AI summary
A brake lining arrangement, in particular for a disk brake of a motor vehicle, has a rear plate and a friction lining that is connected to the rear plate. The rear plate has a bearing face on which the friction lining is placed. The rear plate also has a member configured for fastening the friction lining on the bearing face. The friction lining has at least one cutout that is configured as a blind bore. At least one connecting pin is arranged fixedly on the rear plate so as to project from the bearing face. The connecting pin is configured to engage at least substantially without play into the cutout.