Compact Caliper Assembly with Segmented Parking Brake
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Solution Overview
Problem
Existing service and parking caliper assemblies are either too large for sports cars and heavy vehicles due to their considerable dimensions or require oversized components for effective braking, making them cumbersome and heavy, especially in demanding applications.
Innovation Solution
A compact service and parking caliper assembly design featuring a service caliper body with elongated elements and a bridge connecting them, along with a separate parking caliper with distinct thrust means, supported by a blocking screw for integration and reduced weight, allowing for efficient braking in stringent applications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a service caliper with a floating parking caliper is used, then the parking brake function is integrated, but the caliper dimensions become too large for sports cars with limited space between the brake disc and wheel rim
Solution Approach 1:
The parking caliper is segmented from the service caliper body, with the parking caliper body mounted separately on the brake disc. This segmentation allows the parking caliper to be positioned independently, reducing the overall caliper assembly dimensions while maintaining the integrated parking brake function.
Solution Approach 2:
The parking caliper is positioned in a different spatial dimension relative to the service caliper, mounted on the brake disc rather than being integrated into the service caliper body. This dimensional change allows for compact arrangement within the limited space between the brake disc and wheel rim.
2Reliability
If oversized parking operating means are used to ensure adequate parking braking action, then the parking brake effectiveness is sufficient, but the components become cumbersome and heavy
Solution Approach 1:
The parking caliper uses a dedicated localized braking mechanism with its own separate pad and cylinder, rather than relying on oversized service caliper components. This local quality approach allows the parking brake to achieve sufficient effectiveness with appropriately sized, lightweight components tailored specifically for parking braking action.
3Volume of moving object
If a compact caliper design is implemented, then the space between brake disc and wheel rim is utilized efficiently, but the structural complexity increases to maintain both service and parking braking functions
Solution Approach 1:
The parking caliper body serves multiple functions: it houses the parking brake cylinder, mounts the parking pad against the brake disc, and provides a mounting structure that integrates with the service caliper system. This multi-functionality reduces the need for additional separate components, thereby reducing structural complexity despite the compact design.
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 achieves a compact, robust, and efficient braking system that reduces component count and simplifies assembly and maintenance, suitable for sports cars and heavy vehicles while maintaining performance.
Implementation Method 1
a first thrust piston suitable for exercising a thrust action on a first service pad side to abut it against a first braking surface of the disc and exercise a service braking action on the vehicle
Implementation Method 2
a second thrust piston suitable for exercising a thrust action on a second service pad side to abut it against a second braking surface of the disc and exercise a service braking action on the vehicle
Implementation Method 3
separate thrust means of the parking caliper distinct from the first cylinder and second cylinder of the service caliper body and suitable for abutting at least a third parking pad against the first braking surface of the disc
Data Source
AI summary
A caliper assembly for a service and parking disc brake (1) comprising a service caliper body (2) placed astride a disc for a disc brake having a first and second elongated element on the vehicle side (4), a first service pad (8) to abut it against a first braking surface of the disc and exercise a service braking action on the vehicle, said first elongated element (4) comprising a first abutment and guide pin (16) of the first pad (8) to guide it and receive the braking action of the vehicle, a parking caliper (17) comprising separate thrust means (20) of the parking caliper and for abutting at least a third parking pad (21) against the first braking surface of the disc, said parking caliper (17) has a connection (18) for supporting and connecting at least partially said parking caliper (17) to said service caliper body (2), said connection (18) of the parking caliper (17) to the service caliper body (2) comprises a first blocking screw (19) positioned coaxially to said first support and guide pin (16) of the first service pad (8).