Sliding Caliper Disc Brake Reset to Eliminate Residual Drag
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Solution Overview
Problem
Existing disk brakes for utility vehicles experience residual rubbing torques after braking, leading to increased fuel consumption and reduced service life of components due to incomplete release of brake pads during driving, especially under conditions like wobbling and vibrations.
Innovation Solution
A disk brake design featuring a spreading device with resilient spring units that synchronously reset both brake pads and the caliper, using round material for cost-effectiveness and improved manufacturability, with attachment interfaces designed to prevent tilting and accommodate wear, ensuring complete separation from the brake disk.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a resetting device with resilient resetting element is used to automatically reset the brake caliper, then the brake caliper can be displaced into initial position after braking, but reliable functioning is not permitted in all situations due to component tolerances and deformations
Solution Approach 1:
The brake caliper is designed as a sliding caliper that can dynamically adjust its position along the brake disk diameter through guide beams, allowing automatic adaptation to component wear and deformations without complex resetting mechanisms
Solution Approach 2:
The sliding caliper design enables the brake system to self-adjust and reset automatically through the natural movement of the caliper along the guide beams, eliminating the need for additional resilient resetting elements or complex resetting devices
2Device complexity
If the brake caliper remains in the displaced position after brake release, then the structure is simple, but residual rubbing torques increase fuel consumption and reduce service life
Solution Approach 1:
The sliding caliper design allows the caliper to dynamically return to its initial position after braking through guided movement along the brake disk diameter, ensuring complete separation from the brake disk and eliminating residual rubbing torques without complex resetting mechanisms
Solution Approach 2:
The brake system automatically resets itself through the natural sliding movement of the caliper along the guide beams, with the caliper returning to its initial position where brake pads are properly separated from the brake disk, eliminating the need for external resetting devices and reducing energy loss
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 solution effectively prevents residual rubbing torques, prolongs the service life of brake pads and disks, and reduces operating costs by ensuring complete release of brake pads during driving, even under adverse conditions.
Implementation Method 1
The spreading device has resilient spring units which act on the mutually opposite brake pads
Data Source
AI summary
A disc brake for a utility vehicle has a brake caliper which fits around a brake disc, is in the form of a sliding caliper, is fastened to a stationary brake carrier and has a central opening over the brake disc. The disc brake has two brake pads which are arranged in the brake caliper, can be moved in opposite directions and each have a pad carrier plate and a friction lining fastened thereto, and of which an action-side brake pad can be pressed against the brake disc by a tensioning device via at least one brake piston. The disc brake also has at least one spreading device with which the brake caliper can be returned after a displacement caused by braking and after a release of the brake. The spreading device has resilient spring units which act on the mutually opposing brake pads. The spreading device is arranged in the central opening, and the spring units act directly or indirectly outside the friction linings in at least two attachment interfaces, spaced from each other and from the center, of the brake pads. The spring units are connected to a stationary attachment element in at least one connection interface by at least one connection element.