Compressed-Air Disc Brake Pressure Piece Guide for Decoupled Lateral Play
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Solution Overview
Problem
Existing vehicle brake systems with pressure piece guides face high production costs and limited independent adjustment of lateral guide play in both directions, particularly with crescent-shaped guides that couple lateral guide play components.
Innovation Solution
The pressure piece guide and pressure piece are divided into multiple curved partial surfaces on both sides, allowing for selective and independent adjustment of lateral guide play in both directions, with convex and concave curvatures defining contact surfaces that enable precise setting of guide play.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If guide strips are used for guiding the pressure piece, then the guide play can be set independently in both directions, but the production cost increases significantly
Solution Approach 1:
The pressure piece guide is segmented into multiple curved partial surfaces (first, second, third, and fourth partial surfaces) that can be independently configured. This segmentation allows each surface to control guide play in specific directions, achieving independent adjustment capability similar to guide strips while using a monolithic guide structure that is cheaper to produce.
Solution Approach 2:
Different regions of the pressure piece guide are given different geometric properties through the curved partial surfaces. Each partial surface has specific curvature characteristics that locally control the guide play in particular directions, enabling precise independent adjustment of lateral guide play components without requiring expensive guide strips.
2Ease of manufacture
If crescent-shaped guides are used, then the production cost is reduced, but the lateral guide play in both directions cannot be set independently
Solution Approach 1:
The guide structure is divided into multiple functional partial surfaces (first, second, third, fourth partial surfaces) with different curvature characteristics. This segmentation transforms the simple crescent shape into a multi-functional guide that can independently control lateral guide play in both vertical and horizontal directions, achieving the adjustability of guide strips at lower production cost.
Solution Approach 2:
Curved partial surfaces with specific radius of curvature are used to define the guide geometry. The first and second partial surfaces have different curvatures to control guide play in the first direction, while the third and fourth partial surfaces control guide play in the second direction. This curvature-based design enables precise independent adjustment while maintaining manufacturing simplicity.
3Device complexity
If conventional mounting is used with crescent-shaped guides, then the structure is simple, but the coupling of lateral guide play components in orthogonal directions prevents independent setting
Solution Approach 1:
The guide is segmented into four distinct partial surfaces, each responsible for controlling guide play in specific directional components. This segmentation decouples the lateral guide play control in the first and second orthogonal directions, allowing independent setting of each component while maintaining a relatively simple monolithic guide structure.
Solution Approach 2:
The guide surfaces are configured with curvatures in different dimensional orientations. The first and second partial surfaces provide curvature in one dimension to control guide play in the first direction, while the third and fourth partial surfaces provide curvature in another dimension to control guide play in the second direction, achieving independent control through dimensional separation.
Data Source
AI summary
A vehicle brake (2, 102), in particular a utility vehicle compressed-air disc brake, includes a brake caliper (4, 104), a pressure piece guide (8, 108), which is arranged in the brake caliper (4, 104), and a pressure piece (6, 106), which is guided in the pressure piece guide (8, 108) along a movement axis (10, 110). The pressure piece guide (8, 108) is designed as a recess (12, 112), and the pressure piece (6, 106) has an outer contour (14, 114) corresponding to the recess. The pressure piece guide (108) and/or the outer contour (14) of the pressure piece are/is divided, on both sides of the pressure piece (6), into a plurality of curved, mutually spaced partial surfaces (16, 116).