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Brake disk

A technology for brake discs and motor vehicles, applied in the direction of brake discs, brake types, brake components, etc., can solve the problems of high manufacturing cost, no clearance space for compensation, etc., to ensure additional fixation and avoid end face swing/ Axial runout, the effect of ensuring elastic-plastic properties

Inactive Publication Date: 2012-02-01
DAIMLER AG
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0004] A proven disadvantage is that hydroforming is a complex process associated with high manufacturing costs
Since the friction ring is fitted on the brake disc hub without play in both the axial and radial directions due to the internal high pressure forming of the brake disc hub, the brake disc joined in this way additionally has the following disadvantages, which have not been compensated for Differential thermal expansion of friction ring and brake disc hub provides clearance space

Method used

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Embodiment Construction

[0024] The brake disc designated by 10 as a whole includes a brake disc hub 12 and a friction ring 14. The friction ring includes two friction surfaces 16, 18 that are in frictional contact with the brake pads when the brake is running. In order to (achieve) particularly good friction properties, such friction rings 14 are usually made of cast iron, especially gray cast iron. In order to dissipate the heat generated during braking operation, the friction ring 14 is made as an internally ventilated friction ring and has two friction ring halves 20, 22, which are connected to each other by connecting protrusions 24, for clarity Not all connecting bumps are shown. Thus, a channel 26 is formed between the friction ring halves 20, 22, through which the ambient air can flow, so that heat can be dissipated. In addition, channels 28 are formed in the friction ring halves 20 and 22 respectively, and the channels 28 open into the channel 26 and pass through the friction surfaces 16 and...

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Abstract

The invention relates to a brake disk (10) for a motor vehicle, having a brake disk chamber (12) and a friction ring (14) coaxially disposed thereto, wherein an external lateral surface (38) of the brake disk chamber has a profile which engages a complementary profile of an internal lateral surface (40) of the friction ring (14) for transmitting torque, and wherein the friction ring (14) is disposed in an axially secured manner at the brake disk chamber (12), wherein at least one strap (42) for axially securing same is formed at the external lateral surface (38) of the brake disk chamber (12).

Description

Technical field [0001] The invention relates to a brake disc for a motor vehicle according to the preamble of claim 1. Background technique [0002] So-called hybrid brake discs, that is, brake discs whose friction rings and brake disc hubs are made of different materials are generally known. For example, DE 198 30 666 A1 discloses such a combined brake disc. Combined brake discs are being used more and more, because by separating the brake disc hub and friction ring, the components can be individually optimized for their application. Therefore, for example, it is possible to combine a friction ring made of cast iron with excellent friction and thermal conductivity properties and a brake disc hub made of sheet material to make the entire brake disc lighter, thereby reducing the The unsprung mass of the brake disc of the motor vehicle. [0003] In order to join the brake disc hub to the friction ring, DE 198 30 666 A1 teaches a contour provided on the inner circumference of the f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D65/12
CPCF16D2065/1316F16D2065/1392F16D2065/136F16D65/123
Inventor M·米钱R·迈尔
Owner DAIMLER AG
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