Disc Brake Hold-Down Assembly With Angled Retainer End
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Solution Overview
Problem
The existing disc brake systems face challenges in easy assembly and production due to complex manufacturing requirements for the hold-down device and brake caliper, which complicates the attachment of brake pads and increases costs without ensuring stability.
Innovation Solution
The hold-down device's first end section is angled relative to its central section, allowing for an oblique movement into the brake caliper's slot, simplifying assembly and manufacturing, while the brake caliper's slot is designed with an open shape for easy machining, reducing manufacturing complexity and costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the recess in the brake caliper is adapted closely to the cross-sectional contour of the retainer, then the retainer is fixed radially and transversely with high precision, but the manufacturing complexity increases and special milling tools are required
Solution Approach 1:
The retainer is divided into a central section and two end sections, with the end sections being angle sections that can be inserted into slot-shaped recesses. This segmentation allows the recesses to have a simple slot shape rather than complex custom contours, reducing manufacturing complexity while maintaining fixing precision through the geometric fit of the angle sections in the slots
Solution Approach 2:
The slot-shaped recesses use a standardized geometric form (slot) that is easier to manufacture than custom-contoured recesses. The angle section geometry of the retainer end sections complements the slot shape, creating a form-fit connection that achieves precise radial and transverse fixing without requiring special milling tools or complex manufacturing processes
2Ease of operation
If the retainer end section is inserted into the brake caliper at an angle, then the assembly process is simplified and space requirements are reduced, but the fixing stability may be compromised
Solution Approach 1:
The end sections of the retainer are designed as angle sections with asymmetric geometry relative to the central section. This asymmetry allows the end sections to be inserted into the brake caliper at an angle oblique to the disc brake axis, facilitating easier assembly and reducing space requirements while the angular geometry itself provides the stabilizing mechanical interlock
3Reliability
If the slot in the brake caliper is bounded by a rear wall and inner surfaces, then the retainer end is securely anchored, but the manufacturing process becomes more complex
Solution Approach 1:
The anchoring function is achieved through a simplified slot geometry defined by a rear wall and inner surfaces rather than a fully enclosed complex cavity. The slot shape with its open structure reduces manufacturing complexity compared to fully enclosed custom-contoured recesses, while the rear wall and surface boundaries provide sufficient anchoring security for the retainer end sections
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 configuration provides a stable and space-efficient attachment of the hold-down device, reducing manufacturing costs and simplifying the assembly process without compromising stability, thus improving the overall efficiency of the disc brake system.
Implementation Method 1
a leaf spring extends along the outside of the retainer, its ends fixed against the brake caliper. This spring exerts a holding force on the retainer towards the disc brake axis
Data Source
Figure 1~2
Figure 3~3a
Figure 4
AI summary
The invention relates to a disc brake comprising a brake caliper (1), which engages over a brake disc that can rotate on an axis (A) and brake linings (2, 3) arranged on both sides thereof in a lining groove (6), comprising a hold-down arrangement (8) formed by a rigid hold-down piece (7) and a leaf spring (9) and leading transversely over the brake linings (2, 3), wherein the hold-down piece (7) has a central section (7b) forming the majority of its total length and leading over the lining groove (6), and two end sections (7a, 7c), wherein the hold-down piece is supported against the brake linings (2, 3) towards the disc brake axis (A), and wherein said hold-down piece extends at least partially into a slot (14) of the brake caliper (1) with the first end section (7a) thereof, and wherein the leaf spring (9) extends in the longitudinal direction of the hold-down piece (7) and is spring-elastically supported against the outer side of the hold-down piece (7) facing away from the brake linings (2, 3). In order to more simply configure the fixing of the elements of the hold-down arrangement in terms of assembly and production, without thereby weakening the fixture, the first end section (7a) of the hold-down piece (7) is angled in relation to the central section (7b).