Disc Brake Adjusting Device Retaining Ring Assembly
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing disc brake wear adjustment devices face challenges with preload in both radial and tangential directions, leading to increased costs and complex assembly processes.
Innovation Solution
The adjustment device incorporates a locking ring for axial displacement, radial force support via a grooved ring, and a torsion spring for rotational movement, eliminating the need for additional components and simplifying assembly by ensuring proper torque balance and reducing tilting moments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the adjusting device is fixed using additional components on the brake caliper or pressure piece, then the coil spring can be securely mounted, but the assembly process becomes more complex and costs increase
Solution Approach 1:
The adjusting device merges the mounting function into the adjusting device itself by integrating a retaining ring that engages with a groove in the adjusting spindle. This eliminates the need for separate mounting components on the brake caliper or pressure piece, thereby reducing assembly complexity while maintaining secure mounting of the coil spring.
2Device complexity
If the adjusting device lacks tangential preload capability, then the structure is simpler, but the coil spring cannot be released for brake pad change without additional components
Solution Approach 1:
The adjusting device incorporates a torsion spring that provides dynamic tangential preload capability. The torsion spring can be rotated to release the coil spring's locking effect, enabling brake pad changes without additional components. This dynamic mechanism maintains structural simplicity while facilitating easy operation.
3Device complexity
If radial forces are not properly supported, then the structure is simpler, but tilting moments increase and affect service life
Solution Approach 1:
The adjusting device introduces an outer sleeve as an intermediary component between the adjusting spindle and the coil spring. The outer sleeve properly supports radial forces and minimizes tilting moments, thereby extending the service life of the adjusting device while maintaining structural simplicity.
4Ease of manufacture
If the adjusting device is designed as a single slidable unit, then assembly is simplified, but additional components are needed to support the coil spring
Solution Approach 1:
The adjusting device combines the mounting function into the adjusting device itself by integrating a retaining ring that engages with a groove in the adjusting spindle. This eliminates the need for separate mounting components on the brake caliper or pressure piece, thereby reducing assembly complexity while maintaining secure mounting of the coil spring.
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 reduces costs and simplifies assembly while maintaining effective adjustment of brake pads, ensuring reliable operation and extended service life by minimizing frictional torques and tilting moments.
Implementation Method 1
a torsion spring for rotational movement
Implementation Method 2
The adjusting spindle has a thread and is screwed into an axially displaceable unit with a threaded bore
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The invention relates to an adjusting device (25) for adjusting the wear in brake linings, in particular for utility vehicles, wherein the adjusting device (25) is pushed over a rotatable adjusting spindle (1) of the disc brake, the adjusting spindle (1) having a screw thread and being screwed into a threaded hole into an axially displaceable unit (2). According to the invention, the adjustment device (25) has an outer sleeve and a retaining ring (24), wherein the adjustment device (25) is frictionally and/or interlockingly fixed, such that it is axially displaceable, using the retaining ring (24).