Brake Pad of a Disc Brake

Abstract

A brake pad of a disc brake, having a pad carrier plate and an intermediate layer which is fastened to the bottom surface thereof and carries an abrasive friction lining, is configured in such a way that the thickness of the unused friction lining is less than or equal to a predefined maximum wear dimension. The thickness of the friction lining plus part of the thickness of the intermediate layer correspond to the maximum wear dimension.

Claims

1. A brake pad of a disc brake, comprising: a pad carrier plate; an intermediate layer fastened to a surface of the pad carrier plate; and an abrasive friction lining carried by the intermediate layer, wherein a thickness of the abrasive friction lining before being used is less than or equal to a prescribed maximum wear limit, and the thickness of the friction lining before being used plus a portion of the thickness of the intermediate layer correspond to the prescribed maximum wear limit.

2. The brake pad as claimed in claim 1, wherein the intermediate layer comprises at least a proportion of recycled friction material.

3. The brake pad as claimed in claim 2, wherein the intermediate layer comprises friction particles bonded with synthetic resin.

4. The brake pad as claimed in claim 1, wherein the intermediate layer comprises friction particles bonded with synthetic resin.

5. The brake pad as claimed in claim 1, wherein the intermediate layer is connected to the pad carrier plate and/or the friction lining by material bonding and/or interlocking engagement.

6. The brake pad as claimed in claim 1, wherein the thickness of the intermediate layer is >2 mm.

7. The brake pad as claimed in claim 6, wherein the thickness of the friction lining before being used is <19 mm.

8. The brake pad as claimed in claim 1, wherein the thickness of the friction lining before being used is <19 mm.

Description

BRIEF DESCRIPTION OF THE DRAWING

[0020] The single FIGURE shows an exemplary brake pad according to the invention in a plan view.

DETAILED DESCRIPTION OF THE DRAWING

[0021] Represented in the FIGURE is a brake pad of a disc brake, with a pad carrier plate 1, which consists of metal or some other suitable material and may, for example, be formed from cast iron or metal sheet.

[0022] Fastened to the pad carrier plate 1, usually by adhesive bonding and/or interlocking engagement, is an intermediate layer 2, which carries an abrasive friction lining 3, which when in use, that is to say during braking, is in contact under applied pressure with a brake disc on the vehicle. In this case, the friction lining 3 is preferably connected to the intermediate layer by material bonding.

[0023] The brake pad shown is, as it were, a new product, i.e. the friction lining 3 is unused and is at its maximum thickness b. The thickness of the intermediate layer 2 is denoted by a.

[0024] According to the invention, the thickness b of the unused (new) friction lining 3 is smaller than a prescribed maximum wear limit c.sub.max. The thickness b of the friction lining 3 plus part of the thickness a of the intermediate layer 2 correspond to the maximum wear limit c.sub.max.

[0025] It is clearly evident that, before reaching the wear limit c.sub.max, the friction lining 3 is completely abraded, so that in the further course of braking operations part of the thickness a of the intermediate layer 2 is likewise abraded, until the maximum wear limit c.sub.max is reached.

[0026] The thickness b of the friction lining 3 in the unused (new) situation is preferably <19 mm, while the thickness a of the intermediate layer 2 is >2 mm. It goes without saying that other dimensions are also contemplated; as far as the total thickness of the brake pad is concerned, dependent on the overall space of the respective disc brake in which the brake pads are fitted.

[0027] The foregoing disclosure has been set forth merely to illustrate the invention and is not intended to be limiting. Since modifications of the disclosed embodiments incorporating the spirit and substance of the invention may occur to persons skilled in the art, the invention should be construed to include everything within the scope of the appended claims and equivalents thereof.