Disc Brake Hold-Down Assembly With Angled End Section
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Solution Overview
Problem
The existing disk brake hold-down arrangement is complex to assemble and manufacture, requiring specialized tools due to its extensive adaptation to the cross-sectional contour, which complicates the fastening of brake linings in the brake caliper.
Innovation Solution
The hold-down arrangement is simplified by angling the first end section relative to the center section, allowing for an obliquely running movement into the brake caliper slot, which reduces manufacturing complexity and space requirements while maintaining stability, using a slot with an inclined upper inner face and a U-shaped cutout for the leaf spring engagement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the hold-down is extensively adapted to the cross-sectional contour of the recess, then the fastening stability is improved, but the manufacturing complexity increases and specialized milling tools are required
Solution Approach 1:
The hold-down is divided into a center section and two end sections, where only the end sections are adapted to the cross-sectional contour of the slot. This segmentation allows the majority of the hold-down (center section) to maintain a simple, easy-to-manufacture shape while still achieving stable fastening through the adapted end sections.
Solution Approach 2:
The cross-sectional contour adaptation is applied locally only to the end sections of the hold-down that engage with the slot, rather than the entire hold-down structure. This local quality approach ensures stable fastening at the critical engagement points while keeping the rest of the structure simple and easy to manufacture.
2Reliability
If the hold-down protrudes far into the brake caliper slot, then the fastening stability is improved, but the space requirements increase and assembly complexity increases
Solution Approach 1:
The hold-down structure is segmented into functional zones: the center section provides structural integrity and engages the brake linings, while the smaller end sections provide slot engagement. This segmentation allows stable fastening with minimal protrusion into the slot.
Solution Approach 2:
The end sections are angled away relative to the center section, creating a three-dimensional configuration that allows the hold-down to engage the slot effectively without requiring excessive linear protrusion. This angular arrangement optimizes space utilization while maintaining fastening stability.
3Reliability
If the recess contour is extensively adapted to the hold-down cross section, then the fastening stability is improved, but the device complexity increases
Solution Approach 1:
The slot structure is segmented into a simple main body and localized contour features only at the engagement zones. This segmentation maintains overall structural simplicity while providing the necessary contour adaptation for stable fastening.
Solution Approach 2:
The contour adaptation of the slot is applied locally only where the hold-down end sections engage, rather than throughout the entire slot structure. This local quality approach ensures fastening stability at critical points while keeping the overall device structure simple.
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 solution enables a space-saving and stable fastening of the hold-down arrangement with reduced manufacturing complexity, allowing for standard machining tools to be used, thereby simplifying assembly and manufacturing without compromising the hold-down's stability or the brake caliper's strength.
Implementation Method 1
a leaf spring which is fixed with its ends with respect to the brake caliper extends on the outside, along the hold-down. Said leaf spring loads the hold-down with a hold-down force toward the disk brake axis
Data Source
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).