Vehicle brake, in particular a utility vehicle compressed-air disk brake, and pressure piece for the same
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Solution Overview
Problem
Existing vehicle brake systems with guide rails or crescent-shaped guides face high production costs and difficulty in independently adjusting lateral guide play in multiple directions, limiting precision and efficiency.
Innovation Solution
The pressure piece guide and pressure piece are designed with multiple curved partial surfaces, allowing for independent adjustment of lateral guide play in both directions, with convex and concave contact surfaces and separating surfaces that merge continuously, reducing production effort and enabling precise adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If guide rails are used to guide the pressure piece, then the guide play can be set independently in different 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 are spaced apart from each other. Each partial surface independently guides the pressure piece in specific directions, replacing the need for expensive guide rails while achieving independent adjustment of guide play in both radial and circumferential directions.
Solution Approach 2:
The patent employs curved partial surfaces with specific geometries to guide the pressure piece. The first and second partial surfaces have curvatures that enable independent adjustment of guide play in the radial direction, while the third and fourth partial surfaces provide guidance in the circumferential direction, achieving precise positioning through curved geometry rather than linear guide rails.
2Ease of manufacture
If crescent-shaped guides are used, then production cost is reduced, but the lateral guide play in different directions becomes coupled and cannot be adjusted independently
Solution Approach 1:
Instead of using a single crescent-shaped guide, the patent divides the guide into multiple curved partial surfaces spaced apart from each other. The first and second partial surfaces handle radial guidance independently, while the third and fourth partial surfaces handle circumferential guidance, thereby decoupling the guide play adjustment in different directions while maintaining cost-effectiveness.
Solution Approach 2:
Different regions of the pressure piece guide have different local geometries and curvatures optimized for specific functions. The first and second partial surfaces have curvatures optimized for radial guidance, while the third and fourth partial surfaces have curvatures optimized for circumferential guidance, allowing independent adjustment of guide play in each direction.
3Manufacturing precision
If multiple curved partial surfaces are used, then independent adjustment of lateral guide play is achieved, but the structural complexity increases
Solution Approach 1:
The patent combines multiple curved partial surfaces into a single integrated pressure piece guide structure. The first, second, third, and fourth partial surfaces are all part of one guide component that simultaneously provides independent guidance in both radial and circumferential directions, reducing the number of separate parts while achieving complex guidance functions.
Solution Approach 2:
The pressure piece guide with multiple curved partial surfaces serves multiple functions simultaneously: it guides the pressure piece in the radial direction, guides it in the circumferential direction, maintains proper spacing, and enables independent adjustment of guide play in both directions, all through a single integrated structure.
Data Source
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AI summary
The invention relates to a vehicle brake (2, 102), in particular a utility vehicle compressed-air disk brake, comprising: a brake caliper (4); a pressure piece guide (8), which is arranged in the brake caliper (4); and a pressure piece (6), which is guided in the pressure piece guide (8) along a movement axis (10), the pressure piece guide (8) being in the form of a cavity (12), and the pressure piece (6) having an outer contour (14) corresponding to the cavity. The pressure piece guide (8) and/or the outer contour (14) of the pressure piece is divided, on both sides of the pressure piece (6), into a plurality of curved, mutually spaced partial surfaces.