CZ432599A3 - Lining of brake shoes for disk brakes - Google Patents

Abstract

Disc Brake Lining (100) primarily for road and rail vehicles, consists of a carrier plate (10) and a friction material block (20) mounted thereon of Friction material seated on a support plate (10) fastened by force / or fitting, with the carrier the plate (10) consists of a hard, amorphous and up to decomposition point of rigid plastic, which is made of a densely dense crosslinked macromolecules with high mechanical strength such as duroplastic, wherein the support plate material (10) it engages on the surface (20a) of the friction material that is facing away from the carrier plate (10), and extends beyond the side walls (21,22,23) a friction material block (20) provided on the support plate (10), and is welded to the material of the friction material block (20).

Description

BRAKE LINING FOR DISC BRAKES

Technical field

The invention relates to brake shoe linings for disc brakes according to the preamble of claim 1.

BACKGROUND OF THE INVENTION

Brake shoe linings for disc brakes are known in a variety of designs. However, all embodiments have in common that a friction material block is provided on the metal support plate. Because the support plates are made of metallic materials, they have a high weight and, in addition, a high heat transfer.

SUMMARY OF THE INVENTION

SUMMARY OF THE INVENTION It is an object of the present invention to provide a brake shoe lining of the kind initially mentioned whose bearing plate exhibits low mass and low heat transfer at high mechanical strength, while integrating the carrier plate material into the friction material block material.

78973 (78973a.doc) •

This object is solved with brake shoe linings by the features of claim 1.

Accordingly, the invention resides in a support plate for such a brake shoe lining made of hard, amorphous and up to the decomposition point of a rigid plastic, which is formed of spatially densely crosslinked macromolecules of high mechanical strength. Preferably, the carrier plate consists of a duroplast. The carrier plate material penetrates the friction material block material in the friction material block material in the edge and abutment areas of the plastic material on the friction block block and, in addition, extends beyond the side walls of the friction block block provided on the carrier plate, and thereby the friction material block is integrated into the carrier plate material.

Surprisingly, it has been found that duroplastics are particularly advantageous as a carrier plate material because of their high strength. Added to this is the low weight and low heat permeability. It is particularly advantageous here that the material of the carrier plate during its production, for example by injection molding, penetrates into the material of the friction material block, especially in its side wall regions, and is welded there, so that the friction material block is held simultaneously and associated with it, since the material of the carrier plate also engages in its material in the abutment region of the friction material block.

Examples of embodiments of the invention are set forth in the subclaims.

78973 (78973a.doc)

BRIEF DESCRIPTION OF THE DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a top plan view of a brake shoe lining consisting of a support plate and a block of friction material; and FIG. 2 is an enlarged vertical section along II-II of FIG. 1; another embodiment.

DETAILED DESCRIPTION OF THE INVENTION

The brake shoe lining 100 for disc brakes, in particular for road and rail vehicles, consists, according to FIGS. 1 and 2, of a block 20 of friction material integrated into the duroplast support plate 10. In the manufacture of brake shoe linings 100, for example by injection molding, the support plate 10 is formed and mounted on one of the two sides of the friction material block 20. The friction material block 20 is not attached to the support plate 10 produced by a separate process. The friction material block is almost enveloped in the manufacture of the support plate 10 so that the side walls, in particular the three associated side walls 21, 22, 23 of the friction material block 20, are retained by the material of the support plate 10 (FIG. 1). Thus, the side walls 21, 22, 23 of the friction block 20 are surrounded by side walls 12 which are formed during the manufacture of the support plate 10.

78973 (78973a.doc)

In this case, the material of the support plate 10 which extends beyond the side walls 21, 22, 23 of the friction material block 20 can be guided to the edge region of the surface 20a of the friction material block 20 which faces away from the support plate and can be welded therewith friction material and these overlapping sections of material are indicated at 11 (FIG. 2). Also, the material of the support plate 10 which extends beyond the side walls 21, 22, 23 of the friction material block 20 fuses into the material of the friction material block 20, so that a tight connection occurs between the material of the support plate 10 and the material of the friction material block 20.

Phenoplasts or aminoplasts are preferably used as duroplast for the production of the carrier plate 10. Polyaddition and polymerization of crosslinked materials or material mixtures such as epoxy and unsaturated polyester resins and polyurethane products can also be used.

The friction material block 20 may be provided with recesses 24 on the underside 20b, which are then filled with the support plate material 24a. This engages the material of the support plate 10 into the material of the friction material block 20 and fuses into the material of the friction material block 20 connection.

As a measure to influence acoustic behavior, ie. to influence the natural frequency of the entire structural part of the friction lining block 20 and the support plate 10 - the back side 10a of the support plate 10 may be formed in a geometrically non-uniform shape, i.e. with chamfers or recesses / elevations / dents 25, etc. which is made

78973 (78973a.doc) carrier plate. It is also possible to incorporate materials with different densities into the material of the support plate. adjust the inserts to influence the acoustic behavior. The support plate 10 and the molding 25 consist of the same materials.

Inserts 27a, eg of metal, in the support plate 10 can support the mechanical properties of the duroplastic material in areas where mechanical properties are particularly important, e.g. in the guide surfaces 27 or contact surfaces of the brake piston. The inserts 27a may have the most different geometries.

In order to mechanically disconnect the brake shoe liner / carrier plate and the brake (brake piston), a separating layer 28, for example made of an elastomer, can be applied directly to the carrier plate in a further working step. After application of the adhesive, the elastomer is applied, for example, by injection molding, to the support plate 10. The separating layer 28 s can also be applied to the elevation 25 and to the recesses on the back 10 and the support plate 10 (not shown).

Claims (10)

PATENT CLAIMS A brake shoe lining (100) for disc brakes, in particular for road and rail vehicles, comprising a support plate (10) and a block (20) mounted thereon of pressed friction material, the friction block (20) being The support plate (10) is fastened by force and / or shape contact, characterized in that the support plate (10) is made of a hard, amorphous and up to the decomposition point of a rigid plastic made of spatially densely crosslinked macromolecules with high mechanical strength: such as duroplast, wherein the material of the support plate (10) engages the surface (20a) of the friction material block (20) which faces away from the support plate and extends beyond the side walls (21, 22, 23) of the friction material block (20) provided on the support plate (10) and welded to the material of the friction material block (20). Brake shoe lining according to claim 1, characterized in that the support plate (10) is sprayed onto the friction material block (20) by injection molding while simultaneously sheathing the side walls (21, 22, 23) of the friction material block (20). Brake shoe lining according to either of Claims 1 and 2, characterized in that the material of the support plate (10), in particular the material which engages the side walls (21, 22, 23) of the friction material block (20) and also in the surface region the friction block block (20) is sealed into the friction lining block material. 16 78973 (78973a.doc) 4 00 J Brake shoe lining according to one of Claims 1 to 3, characterized in that the friction material (20) has an insertion and / or a recess for receiving the material (24a) on its lower side (20b), facing the support plate (10). support plates (10). ·· ·· Brake shoe lining according to one of Claims 1 to 3, characterized in that the friction material (20) has, on its underside (20b), facing the support plate (10), profiling of grooves, grooves or grooves for receiving the support material. plates (10). Brake shoe lining according to one of claims 1 to 5, characterized in that the support plate (10) has recesses and / or elevations (25) on its rear side (10a) facing away from the friction material (20). Brake shoe lining according to one of Claims 1 to 5, characterized in that the support plate (10) has profiling from recesses and / or elevations on its rear side (10a) facing away from the friction material (20). Brake shoe lining according to one of claims 1 to 7, characterized in that the support plate (10) has at least one insert (26) and / or a material density region deviating from the remaining material of the support plate (10). Brake shoe lining according to one of Claims 1 to 8, characterized in that the support plate (78973a.doc) 4 (10) is provided with at least one insert (27a) on a mechanically higher stressed area. Brake shoe lining according to one of Claims 1 to 9, characterized in that the support plate (10) is provided with a separating layer (28) on its rear side (10a) facing away from the friction material (20).