Fixed-Caliper Brake Pad Guide With Elastic Resetting Clearance
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Solution Overview
Problem
Conventional fixed caliper disc brakes generate unwanted noise and increase fuel consumption due to residual contact between brake pads and the brake disc after braking, as the brake pad arrangements do not fully return to their initial position.
Innovation Solution
Incorporating an elastically deformable restoring element within the guide means of the brake caliper, which counteracts the braking-effective displacement of the brake pad arrangement, ensuring a 0.2 mm clearance between the brake pad and brake disc in a non-actuated position, thus preventing residual grinding torques and noise transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If resilient guide means are used to support brake pad arrangements, then vibrations and noise during braking are reduced, but residual contact between brake pads and disc persists causing unwanted noise and increased fuel consumption
Solution Approach 1:
The patent changes the mechanical parameter of the guide means by incorporating an elastically deformable restoring element that actively generates a restoring force. This modifies the static resilient support into a dynamic system that actively returns the brake pad arrangement to its initial position, ensuring complete separation from the brake disc and eliminating residual grinding contact.
Solution Approach 2:
The restoring element is designed to automatically generate the necessary restoring force through its elastic deformation during braking displacement. The system self-regulates by converting the displacement energy stored during braking into a restoring force that automatically returns the brake pads to their initial position without external intervention, preventing residual contact.
2Power
If brake pad arrangements are displaced for braking, then braking effect is achieved, but incomplete return to initial position causes residual contact and noise
Solution Approach 1:
The patent transforms the static guide means into a dynamic system by incorporating an elastically deformable restoring element. This element dynamically responds to the braking displacement by deforming elastically and generating a restoring force that actively returns the brake pad arrangement to its initial position, ensuring complete retraction and preventing residual contact with the brake disc.
Solution Approach 2:
The restoring element is pre-configured with elastic properties that enable it to store energy during braking displacement and automatically release this energy as a restoring force. This preliminary preparation of the elastic structure ensures that the brake pad arrangement is actively returned to its initial position without requiring additional actuation mechanisms.
3Object-affected harmful factors
If guide means are made resilient to reduce vibrations, then noise during braking is reduced, but the system complexity increases
Solution Approach 1:
The patent merges the guiding function and the restoring function into a single integrated guide means structure. The elastically deformable restoring element is incorporated directly into the guide means, combining the vibration-damping resilient support with the position-restoring function in one component, thereby reducing overall system complexity while achieving multiple objectives.
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 reduces noise and fuel consumption by ensuring complete retraction of the brake pads, enhancing the service life of the brake system and simplifying assembly through the recessed design within the brake caliper.
Implementation Method 1
The guide means comprises an elastically deformable restoring element, which is supported against the brake pad carrier and is designed to exert a restoring force on the at least one brake pad arrangement as a result of an elastic deformation due to the braking-effective displacement
Data Source
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AI summary
A fixed-caliper disk brake (100) comprises a brake caliper (102) which is fixed with respect to a vehicle and which has at least one guide with a receiving region (130, 132), comprises at least one brake pad arrangement (108, 110) with a brake pad carrier (112, 114) on which a brake pad (116, 118) is mounted, and comprises a guide means (126, 128) with a guide section (162) which is mounted in the receiving region (130, 132) of the at least one guide. The brake pad arrangement (108, 110) is guided displaceably in the region of the guide of the brake caliper (102) by means of at least one guide surface (122, 124), which bears displaceably against the guide means (126, 128), of the brake pad carrier (112, 114). The guide means (126, 128) comprises an elastically deformable resetting element (154, 156) which is supported with respect to the brake pad carrier (112, 114) and which is designed to, as a result of a displacement of the brake pad arrangement (108, 110) for the purposes of a braking action, exert a resetting force on said brake pad arrangement as a result of an elastic deformation, which resetting force acts counter to the displacement of the brake pad arrangement (108, 110) for the purposes of the braking action. The resetting element (154, 156) is arranged at least partially in a recess (158, 160) of the brake caliper (102) which is fixed with respect to the vehicle.