FR3134066A1 - Brake pad - Google Patents

Abstract

The invention relates to a brake pad with a carrier element which comprises a front side and a rear side, more than two friction elements arranged on the front side of the carrier element and being connected thereto, the carrier element having a first and a second carrier element part, friction elements being arranged on both the first and the second carrier element part. Figure 1

Description

Brake pad

The invention relates to a brake pad, in particular for a railway vehicle, with a carrier element which comprises a front side and a rear side, and more than two friction elements which are arranged on the front side of the carrier element and are connected to it.

The invention further relates to a disc brake comprising at least one brake pad.

Brake pads for heavy-duty disc brakes, such as those used in railway vehicles, are known from the prior art. For example, reference is made to document DE 10 2012 103 196 A1 which also gives a good overview of the different manufacturing processes of the brake pad support plates used in these disc brakes. Disc brakes of this type usually have several brake pad elements, which are assembled in groups on a supporting element, as can be seen, for example, in DE 20 2005 004 040 U1 or DE 44 36 457 A1. To mount brake pad backing plates to a supporting member, rivets are usually used. To prevent rotation, additional anti-rotation elements are used which protrude beyond the rear of the brake pad support plate and extend into corresponding recesses in the carrier element.

Document DE 60 2010 05 T2 describes a brake pad for a railway vehicle, the brake pad comprising: a support plate; a number of friction material blocks arranged on the support plate and cooperating, by friction, with a rotating braking element; and connecting means for connecting the blocks to the support plate so that the blocks are held in respective rest positions extracted from the support plate. The connecting means comprise deformable elastic means allowing the blocks to move from rest positions to respective retracted working positions; and holding means for holding the blocks connected to the elastic means at least in the rest positions; the elastic means being formed in one piece with the support plate. As a result, the number of individual parts that make up the brake pad can be reduced.

The document AT 519090 A4 discloses a brake pad, in particular for a railway vehicle, with a supporting element which comprises a front face and a rear face, more than two friction elements, a number of elements carrying friction elements which corresponds to the number of friction elements, a respective friction element being inseparably attached to a corresponding friction element carrying element and the friction element supporting elements being arranged on the front side of the carrying element and connected thereto, the friction element supporting elements further comprising a fixing element and the friction element carrying elements each being connected to the carrying element via these fixing elements. The fixing elements are made in one piece with the elements carrying friction elements. Each element carrying friction elements has only one fixing element. Furthermore, the supporting element comprises a raised edge which at least partially laterally covers the friction element carrying elements, so that each of the friction element carrying elements is arranged on at least one side, at least in certain areas, at a maximum distance of 5 mm from the edge.

The present invention is based on the aim of creating an improved brake pad for a railway vehicle.

The aim of the invention is achieved with the brake pad mentioned at the beginning by the fact that the carrier element comprises a first and a second carrier element parts, friction elements being arranged both on the first and on the second. second part of supporting element.

Furthermore, the aim of the invention is achieved with the disc brake mentioned at the beginning, which comprises the brake pad according to the invention.

The advantage here is that, thanks to the split carrier element, a better adaptation of the brake pad to the friction partner, i.e. in particular a brake disc, can be achieved when engaging by friction. It is thus possible, especially at the start of friction engagement, to achieve full-surface contact between the friction partners, which can also improve the visual appearance of wear of the friction lining.

According to a variant embodiment of the invention, it can be provided that the first part of the carrying element is connected to the second part of the carrying element, which makes it possible to improve or simplify the handling and assembly of the two parts. of supporting element.

According to a variant embodiment of the invention, the connection can be designed with at least one articulation to support the above effects.

According to another embodiment of the invention, it can also be provided that the connection of the first part of the supporting element to the second part of the supporting element is designed with spring-type elasticity, so that, in the mounting situation, the two supporting element parts can be held in position more securely. More particularly, it can be achieved by this that, after a relative movement of one relative to the other, the two parts of the supporting element automatically return to their starting position.

According to another alternative embodiment of the invention, it can be provided that a first mounting element is arranged on the rear face of the first carrying element part and that a second mounting element is arranged on the rear face of the second supporting element part. This not only simplifies the assembly of the brake pad itself, but also allows the supporting element parts to be reinforced, thereby improving the torsional rigidity of the brake pad.

According to an alternative embodiment of the invention, in order to improve the effects mentioned, provision can be made for the first mounting element and the second mounting element to be produced in the form of profiled mounting sheets. These also offer greater variability in the arrangement of fixing areas.

According to a variant embodiment of the invention, it can also be provided that the first part of the carrying element and the second part of the carrying element are connected to each other via the first and second support elements. assembly, which makes it possible to reduce the number of components of the brake pad and possibly its weight.

To further increase the torsional rigidity of the brake pad, according to another alternative embodiment it can be provided that the first part of the carrying element comprises a first contact zone and the second part of the carrying element comprises a second zone of contact, the first contact zone comprising a first ply and the second contact zone comprising a second ply, the first ply and the second ply being arranged adjacent to each other. The two supporting element parts can support each other. By stiffening the brake pad, it is also possible to improve the acoustic behavior during operation, so that the brake pad can be designed to be acoustically less noticeable.

According to one embodiment of the invention, an improvement in friction performance can be obtained by improving the support of the friction lining in friction contact. According to this mode, each friction element comprises a friction element carrying element, each friction element being connected to a respective friction element carrying element and the friction element carrying elements being connected to the carrying element .

According to another alternative embodiment of the invention, it can be provided that the first part of the carrying element comprises a first rear element posterior and a first anterior rear element which is connected to the first posterior rear element, and/or the second supporting element part comprises a second posterior rear element and a second anterior rear element connected to the second posterior rear element, the friction elements being connected either to the first front rear element or to the second front rear element. With this alternative embodiment, the assembly of the individual friction elements can be simplified.

According to other alternative embodiments of the invention, it can be provided that elevations are arranged on the first front rear element and on the second front rear element, the total number of elevations corresponding to the total number of friction elements arranged on the carrying element, or that between the first rear rear element and the first rear front element, a first intermediate element is arranged which comprises an elevation by friction element arranged on the first rear front element, and/or that a second intermediate element is arranged between the second posterior rear element and the second anterior rear element and comprises an elevation by friction element arranged on the second anterior rear element. With elevations, a more flexible mounting of the friction elements can be achieved, so that they are more movable in the axial direction and can also perform tilting movements. Thus, the insertion of individual spring elements for each friction element can be avoided. Thus, the need to provide guiding and fixing elements for the spring elements can be avoided, with the result that the number of components of the brake pad can be reduced.

According to a variant embodiment of the invention, it can be provided that one of the elevations or several of the elevations comprise at least one recess in the form of a slot. Through these recesses, the elevations can achieve different tilting rigidities, the tilting rigidities of the brake pad can be better adapted to defined areas of use, and if necessary even within a brake pad , tilting rigidities different from each other can be given to the friction elements.

In order to further stiffen the brake pad, according to another alternative embodiment of the invention, it is possible for the first part of the carrying element and the second part of the carrying element to be provided with folds in several edge zones. With this variant, smaller mounting elements can be used and the direct connection of the carrier element to a braking system or a braking device can be simplified.

According to another alternative embodiment of the invention, it can be provided that the friction elements comprise side surfaces and are provided with recesses on the side surfaces, with adjacent friction elements extending into the recesses. Thus, with the friction elements, a configuration can be made possible which achieves mutual anti-rotation blocking, so that it is possible to dispense with additional anti-rotation blocking elements.

For a better understanding of the invention, it is explained in more detail with reference to the following figures.

They show, each in a simplified and schematic representation:

There shows part of a disc brake with a brake pad arranged on it;

There shows a brake pad in an oblique front view;

There shows a brake pad in a rear oblique view;

There shows part of a brake pad in an exploded view and an oblique view;

There shows part of a brake pad in cross section;

There shows part of an embodiment of the brake pad;

There shows part of another embodiment of the brake pad;

There shows part of another embodiment of the brake pad;

There shows an alternative embodiment of a brake pad;

There shows part of the brake pad according to the in an exploded view and an oblique view.

First of all, it will be noted that in the embodiments described in different ways, the same parts are provided with the same reference numbers or the same component designations, the statements contained throughout the description being able to apply to the same parts with the same part numbers or component designations. The position information chosen in the description, such as top, bottom, side etc., is linked to the figure directly described and illustrated and this position information is to be transferred to the new position in the event of a change of position.

There schematically shows part of a disc brake 1 which is used in particular in railway vehicles such as, for example, high-speed trains. The disc brake 1 comprises a brake disc 2 with which at least one brake pad 3 is associated.

Disc brakes 1 being known per se from the prior art, reference is made to the relevant prior art for further details. It is therefore clear that the disc brake 1 can include or includes additional assemblies, such as elements for actuating the brake pads, even if these are not shown on the for reasons of clarity.

It will also be noted that the disc brake 1 according to the has only one brake pad 3. However, the disc brake 1 can also include more than two brake pads 3, for example three or four.

The design of the brake pad 3 is best seen in Figures 2 to 4. Preferably, all brake pads 3 of a disc brake are designed in the same way. The explanations below concerning the brake pad 3 can therefore also be applied to any other brake pad 3 possibly present on the disc brake 1.

The brake pad 3 comprises a supporting element 4 which comprises a front face 5 and a rear face 6.

Furthermore, the brake pad 3 comprises more than two friction elements 7. In the particular embodiment of the brake pad 3, twelve friction elements 7 are arranged. However, fewer or more than twelve friction elements 7 can also be arranged, for example two or four or six or eight or ten or fourteen, etc.

The friction elements 7 are arranged on the front face 5 of the carrier element 4 and connected to it. Preferably, however, the connection is not carried out directly, but according to a variant embodiment of the brake pad 3 with the interposition of elements carrying friction elements 8. Preferably, each friction element 7 is arranged on an element carrying friction elements 8 and connected thereto. Thus, the brake pad 3 preferably comprises a number of friction element carrying elements 8 corresponding to the number of friction elements 7. The friction element carrying elements 8 are, for their part, arranged on the front face 5 of the carrying element 4 and connected to it.

The friction element carrying elements 8 are preferably exactly as large in size - seen in plan - as a friction element 7 seen in the same direction. Side surfaces 9 of the friction elements 7 are thus aligned with side surfaces 10 of the friction element carrying elements 8. If necessary, the friction element carrying elements 8 can be up to a maximum of 10%, in particular up to a maximum of 5%, larger than the friction elements 7 (again seen in plan), so that the friction element carrying elements 8 comprise an annular free edge along the outer circumference, which can also be raised if necessary, so that the friction elements 7 are surrounded at least partially along their outer circumference by the friction element carrying elements 8, although the last two embodiments of the plate brake 3 are not the preferred embodiments. According to another alternative embodiment of the brake pad 3, the friction element carrying elements 8 can be smaller, up to 10% at most, in particular at most 5%, than the friction elements 7 ( seen in plan). Mixed variants of these design variants are also possible, i.e. the brake pad 3 has friction element support elements 8 which are smaller than the friction elements 7 and/or which are larger than the friction elements 7 and/or which are of the same size as the friction elements 7.

The carrier member 4 comprises or consists of a first carrier member part 11 and a second carrier member part 12. The two supporting element parts 11, 12 are arranged in the brake pad 3 so as to be adjacent to each other.

As can be seen in Figures 1 and 2, friction elements 7 are arranged on both the first and second supporting element parts 11, 12 and are connected thereto. In the preferred embodiment, the two parts of supporting elements 11, 12 each comprise the same number of friction elements 7, for example six each.

It should be noted that the two-part embodiment of the carrying element 4 is preferred. In the context of the invention, the carrier element 4 may also comprise more carrier element parts on which friction elements 7 are arranged.

It should also be specified that the friction elements 7 are preferably arranged on the first part of the carrying element 11 or on the second part of the carrying element 12 in such a way that they are each arranged exclusively inside the surface defined by the first or the second supporting element part 11, 12. In other words, none of the friction elements 7 extend from the first supporting element part 11 to the second supporting element part 12.

The supporting element parts 11, 12 or their components, as will be discussed below, can be produced by stamping a flat sheet of a metallic material, in particular steel. The supporting element parts 11, 12 can thus be produced at least approximately with the shape of the final contour. Other processes, such as cutting, e.g. laser cutting, etc., can of course also be used for this purpose.

When viewed from above, the friction elements 7 may have a cross section that is at least approximately triangular with rounded tips. They may also have a different cross-section shape, such as hexagonal.

According to the preferred embodiment of the brake pad 3 shown in the figures, the friction elements 7 comprise recesses 13 in the side surfaces 10. The recesses 13 can be designed to extend continuously in the axial direction, so that the friction elements 7 include recesses, seen from above on the end face. In particular, they can have a rounded and concave profile, the friction elements 7 can thus be described as "triconcave", since each side of the substantially triangular cross section (in a view on the end face) can comprise such a rounded recess 13 in the form of a recess (that is to say a side face pulled inwards at the center of the side edge).

The recesses 13 have the advantage that the adjacent friction elements 7 are fitted into each other. For this purpose, in particular, points or corners of the adjacent friction element 7 can be arranged in these recesses, as shown, for example, on the . With this arrangement, an anti-twist device for the friction elements 7 can be created by the fact that the friction elements prevent each other from twisting, so that additional fixing elements such as those known in the art prior for anti-twist devices of friction elements, are not necessary.

Although the mentioned triconcave embodiment of the friction elements 7 is preferred, the friction elements 7 can also have other cross-sectional shapes with recesses 13 in the side walls or the side surface(s). (s).

The friction elements 7 are preferably made of a sintered material, for example a sintered material based on copper. However, other materials can also be used for the friction elements 7, for example a fiber reinforced resin.

The friction elements 7 can be glued or brazed or welded to the friction element carrying elements 8 or sintered onto the friction element carrying elements 8, as is known per se.

The friction element carrying elements 8 can comprise a plurality of recesses, in particular passages 14, as seen in particular in Figures 4 and 5. The friction elements 7 can extend into these recesses or passages 14 , so that a better connection of the friction elements 7 to the friction element carrying element 8 is made possible.

Furthermore, the friction element carrying elements 8 may comprise a central passage 15 which serves to connect the friction element carrying elements 8 to the carrying element 4. This can be done for example by means of an element connecting element, for example a rivet 16. The friction element 7 may comprise a corresponding passage 17 for fixing this connecting element.

To connect the friction element carrying elements 8 to the carrying element 4, a recess, in particular a passage 18, is provided in the latter for each friction element carrying element 8, up to or through which recess the connecting elements extend.

Preferably, the passages 14, 15, 17 and 18 each have a circular cross section seen in a top view. However, other cross-section shapes are also possible.

The dimensions of the cross sections of the passages 14, 15, 17 and 18, in particular their diameter, are preferably chosen so that the elements of the brake pad 3 extending respectively into or through the passages, are in support, at least partially, in particular entirely, on the side walls delimiting the passages 14, 15, 17 and 18. Preferably, a friction connection and/or a shape connection and/or a force connection is formed between the side walls delimiting the passages 14, 15, 17 and 18 and the connecting elements.

The first supporting element part 11 comprises a first contact zone 19 on the outer circumference and the second supporting element part 12 comprises a second contact zone 20 on the outer circumference. The two contact zones 19, 20 are the zones of the parts of supporting elements 11, 12 in which the latter bear against one another. These contact zones 19, 20 can only comprise the two outer surface sections of the supporting element parts 11, 12, with which the two supporting element parts 11, 12 bear against each other.

According to a preferred alternative embodiment of the brake pad 3, it can however be provided that the first contact zone 19 comprises a first raised edge 21, in particular a first fold, and the second contact zone 20 comprises a second raised edge 22, in particular a second fold, as seen in particular in Figures 2, 4 and 5. The first raised edge 21 extends over at least one partial zone of the first contact zone 19, preferably over the entire length of the first contact zone 19, and/or the second raised edge 22 extends over at least one partial zone of the second contact zone 20, preferably over the entire length of the second contact zone 20.

By pressing the two raised edges 21, 22 against each other (at the junction of the two supporting elements 11, 12), mutual support of the two supporting element parts 11, 12 can be obtained.

As can be seen in particular in Figures 9 and 10, according to another alternative embodiment, it can be provided that other end zones 33, 34 of the supporting elements 11, 12 (only the supporting element 11 is shown on there ) which are formed opposite the contact zones 19, 20, comprise (also) a fold. These folds are therefore arranged in the entry zone and in the exit zone of the brake pad 3, as can be seen in the .

By the folds of the supporting elements 11, 12, we can make the latter more rigid and/or prevent their rotation, possibly also that of the friction elements 7.

According to another alternative embodiment of the brake pad 3, it can be provided that the first part of the supporting element 11 and/or the second part of the supporting element 12 are provided with a raised edge, in particular with folds, in several edge areas along outer circumference. These can be designed as the first edge 21 or the second edge 22. However, the brake pad 3 preferably only comprises the first and second edges 21, 22 described and possibly the folds in the entry area and in the exit area of the brake pad 3.

The first and second edges 21, 22 or the other raised edges project beyond the supporting element 4 on the front face 5.

The height of the first and second edges 21, 22 or of the other raised edges can be, for example, between 1 mm and 5 mm.

In the simplest embodiment, the supporting element 4 is designed in a single layer. According to a preferred embodiment of the brake pad 3, however, it can be provided that the first part of the supporting element 11 comprises a first rear rear element 23 and a first rear front element 24 which is connected to the first rear rear element 23, and/or that the second carrying element part 12 comprises a second rear rear element and a second rear front element connected to the second rear rear element. The structure of the supporting elements 11, 12 of this variant embodiment being the same as that of the two rear elements 23, 24, only the first part of the supporting element 11 is shown in FIG. The corresponding explanations can also be transposed to the second part 12 of the supporting element.

In this variant embodiment, the friction elements 7 are connected either to the first front rear element 24, or to the second front rear element.

The first front rear element 24 and/or the second front rear element can be formed with a plurality of elevations 25 (by forming). These elevations 25 can be in the shape of a cap or in the shape of a dome, as seen in particular on the . The total number of elevations 25 corresponds to the total number of friction elements 7 arranged on the carrier element.

These elevations 25 can be stamped into the first front rear element 24 and/or the second front rear element by forming. The shape and size of the elevations 25 can be predefined depending on the application. The shape and size influence the rigidity and therefore the axially admissible movement. In addition, this type of design also allows tilting movements of the friction elements 7, which leaves three degrees of freedom for this system.

According to another alternative embodiment, it is also possible to provide for a first intermediate element to be arranged between the first rear rear element and the first rear front element 23, 24, which comprises one of the elevations 25 for each friction lining arranged on the first front rear element, and/or that between the second rear rear element and the second front rear element, a second intermediate element is arranged, which comprises one of these elevations by friction lining arranged on the second front rear element. For greater clarity, the embodiment according to can be interpreted in such a way that the friction element carrying element 8 shown corresponds to the first front rear element 24 and that the first front rear element 24 shown on the corresponds to the intermediate element. In this case, however, a single intermediate element is provided for each supporting element part 11, 12, which each time includes all the elevations 25 associated with this supporting element part 11, 12.

The elevations 25 are made in the direction of the elements carrying friction elements 8, so that the rear face 6 of the first front rear element 24 or the second front rear element (or the intermediate element) is formed with depressions.

With these elevations 25, support elements (support bumps) are created, so that the friction elements 7 are held in pivoting. In these variants, the friction elements 7, that is to say the elements carrying friction elements 8, rest (exclusively) on these elevations 25, as can be seen for example on the .

The elevations 25 can be produced for example by stamping or pressing. In particular, the elevations 25 are made from the material of the first front rear element 24 or the second front rear element (or the intermediate element) and are connected to it in one piece.

The elevations 25 can have a maximum height of between 0.5 mm and 4 mm, in particular between 2 mm and 3 mm.

By the elevations 25 we obtain that the rear of the elements carrying friction elements 8 does not rest on the entire surface of the carrying element 4, that is to say on the first front rear element 24 or the second anterior rear element (or the intermediate element). This in turn allows the friction element carrying elements 8 to be mounted on the carrying element 4 in a manner which allows the friction elements 7 to pivot when the load is not applied over the entire surface when the brake is closed. By the pivoting capacity, it is possible for the friction elements 7 to come to bear on the brake disc 2 over the entire surface ( ). A type of oscillating bearing can thus be formed. With these elevations 25, however, the stiffness behavior of the carrier element 4 itself and the temperature behavior of the brake pad 3 can be influenced.

According to another alternative embodiment of the brake pad 23, it can be provided that one or more or all of the elevations comprise one or more slot-shaped recesses 26 (indicated in dotted lines for an elevation 25 on the ), including passages. These slot-shaped recesses can extend radially continuously outwards from the central passage 18 over at least a partial area of the width or over the entire width of the elevation 25 (and possibly beyond) . Furthermore, the width of the different slot-shaped recesses 26 may be different. With the help of these slot-shaped recesses 26, the rigidity of the elevations 25 can be influenced or modified and thus adjusted.

Preferably, a mounting element 27 (which can also be called a dovetail) is arranged on the rear face 6 of the first carrying element part 11 and on the rear face 6 of each of the second carrying element parts 11 , 12, a second mounting element 28 (which can also be called dovetail) is arranged, which mounting elements being connected to the corresponding supporting element part 11, 12. By these mounting elements 27, 28, the connection to the brake caliper or to the pad holder (both not shown) can be established.

The mounting elements 27, 28 include specifically selected passages which can be aligned with passages respectively in the first or second supporting element part 11, 12 or in their components. In the area of these passages, the supporting element parts 11, 12 can be attached to each other on the mounting elements 27, 28 by a material connection by welding. Alternatively, other assembly technologies or also screw connections constitute a possibility of connecting these components of the brake pad.

It should be mentioned at this point that the first and second rear rear elements 23 also include, in addition to these passages ("weld holes"), a pattern of holes which corresponds to the arrangement of the elevations 25 on the first and second elements rear front 24. These openings are used for mounting the friction elements 7.

The first and/or second mounting element 27, 28 may be flat sheet metal elements. According to the preferred embodiment, however, they are formed by profiled mounting plates. For this purpose, a central section (extending in the longitudinal direction of the mounting elements 27, 28) can be designed raised relative to the two adjacent edge sections, so that the mounting elements 27, 28, seen from the rear, may include a channel extending in the longitudinal direction. The central section can thus be arranged at a distance from the surface of the respective supporting element part 11, 12, as can be seen for example on the .

The described mutual support of the first supporting element part 11 on the second supporting element part 12 also allows the use of shorter mounting elements 27, 28. For example, the mounting elements 27, 28 may have a length 32 of between 30% and 90%, in particular between 30% and 70%, of the maximum length of the first and second parts of the carrying element 11, 12. seen in the same direction. With the described alternative embodiment of the formation of additional raised edges (outside the contact areas 19, 20 of the supporting element parts 11, 12), complete integration of the mounting element characteristic in the part respective carrier element 11, 12 can be made possible.

The first and second supporting element parts 11, 12 can be arranged in the brake pad 3 abutting against each other loosely. According to an alternative embodiment of the brake pad 3, it can however also be provided that the first part of the carrying element 11 is connected to the second part of the carrying element 12. The connection can be made, for example, in the zone of the raised edge in the contact zones 19, 20 of the supporting element parts 11, 12 by means of connecting elements, such as screws 29 or rivets, as illustrated in the .

According to another alternative embodiment illustrated on the , the connection can also be designed in an articulated manner, for example by means of a joint or a hinge 30.

The first carrier element part 11 can also be connected to the second carrier element part 12 via the plate support, in particular if the first carrier element part 11 and the second carrier element part 12 are arranged in loose way.

It is also possible that the connection of the first supporting element part 11 to the second supporting element part 12 is designed with spring-type elasticity, for example via a helical spring 31, as illustrated on the .

The first carrier element part 11 can also be connected to the second carrier element part 12 via the first and second mounting elements 27, 28, in which these are correspondingly connected to each other. other. Alternatively, a single mounting element 27 can be used, on which the two supporting element parts 11, 12 are arranged and connected thereto.

Figures 9 and 10 show another variant of the brake pad 3. Not only do we find the folds of the parts of supporting elements 11, 12 in the entry zone and in the exit zone, as has already been explained above, but these figures should also show the design with friction elements 7 having other cross-section shapes. In addition, the above explanations, adapted if necessary appropriately, can also be transposed to this alternative embodiment of the brake pad 3.

As can be seen in particular on the , the brake pads 3 have an essentially hexagonal cross section. The tips are pointed, but can also be rounded.

In this alternative embodiment of the brake pad 3 also, the friction elements 7 comprise recesses 13 in the side surfaces 10. The recesses 13 can be designed to extend continuously in the axial direction, so that the friction elements 7 include indentations - in top view on the end face. In particular, they may have a concave rounded profile, as has already been explained above. However, in the variant embodiment illustrated on the , the friction elements 7 are formed with side surfaces 10 of different shapes. As can be seen, in addition to the concave rounded side surfaces 10, the friction elements 7 also include at least one flat side surface 10, that is to say a side surface 10 without the recess 13.

In the context of the invention, several side surfaces of the friction elements 7 can be flat in this way, but in all cases at least one side surface 10 comprises a recess 13.

In addition, it can be provided that the curves of the side surfaces 10 friction elements 7 can be provided with different radii of curvature. This can be the case on the same friction element 7 just as it can be the case in relation to other friction elements 7.

We further see on the that the friction elements 7 can be arranged at least partially with the tips opposite each other.

With regard to the fold mentioned above, it should be noted that all the folds are preferably designed to extend in the same direction, that is to say in particular towards the front face of the brake pad 3 on which the friction elements 7 are arranged.

In summary, this invention is characterized in the preferred embodiment by a split substructure which has increased torsional rigidity due to its structural design, which secures the friction elements, through the combination of the shape of the friction elements and their arrangement, against twisting and which offers acoustic and wear advantages thanks to the integration of the elastic elements in the support plate without having to use additional machine elements.

The exemplary embodiments show or describe possible alternative embodiments of the brake pad 3, it being noted at this stage that combinations of the different alternative embodiments are also possible.

Finally, for the sake of clarity, it should be noted that, for a better understanding of the structure of the brake pad 3 or the disc brake 1, these are not necessarily represented to scale.

1. frein à disque
2. disque de frein
3. plaquette de frein
4. élément porteur
5. face avant
6. face arrière
7. élément de friction
8. élément porteur d'élément de friction
9. surface latérale
10. surface latérale
11. partie d’élément porteur
12. partie d’élément porteur
13. évidement
14. passage
15. passage
16. rivet
17. passage
18. passage
19. zone de contact
20. zone de contact
21. bord
22. bord
23. premier élément arrière postérieur
24. premier élément arrière antérieur
25. élévation
26. évidement
27. élément de montage
28. élément de montage
29. vis
30. charnière
31. ressort hélicoïdal
32. longueur
33. zone d’extrémité
34. zone d’extrémité

List of reference numbers

1. disc brake
2. brake disc
3. brake pad
4. supporting element
5. front face
6. back side
7. friction element
8. friction element carrying element
9. side surface
10. side surface
11. supporting element part
12. supporting element part
13. obviously
14. passage
15. passage
16. rivet
17. passage
18. passage
19. contact area
20. contact area
21. edge
22. edge
23. first rear posterior element
24. first rear anterior element
25. elevation
26. obviously
27. mounting element
28. mounting element
29. screw
30. hinge
31. coil spring
32. length
33. end zone
34. end zone

Claims (16)

Brake pad (3), in particular for a railway vehicle, with a carrier element (4) which comprises a front side (5) and a rear side (6), plus two friction elements (7) which are arranged on the front face (5) of the carrier element (4) and are connected to it, characterized in that the carrier element (4) comprises a first and a second carrier element parts (11, 12), friction elements (7) being arranged on both the first and the second carrier element part (11, 12). Brake pad (3) according to Claim 1, characterized in that the first carrier element part (11) is connected to the second carrier element part (12). Brake pad (3) according to Claim 2, characterized in that the connection of the first carrier element part (11) to the second carrier element part (12) is carried out with at least one articulation. Brake pad (3) according to claim 2 or 3, characterized in that the connection of the first carrier part (11) to the second carrier part (12) is designed with spring-like elasticity . Brake pad (3) according to one of claims 1 to 3, characterized in that a first mounting element (27) is arranged on the rear face (6) of the first carrier element part (11) and a second mounting element (28) is arranged on the rear face (6) of the second supporting element part (12). Brake pad (3) according to Claim 4, characterized in that the first mounting element (27) and the second mounting element (28) are designed as profiled mounting plates. Brake pad (3) according to Claim 4 or 5, characterized in that the first carrier element part (11) and the second carrier element part (12) are connected to each other by the intermediate of the first and second mounting elements (27, 28). Brake pad (3) according to one of claims 1 to 6, characterized in that the first carrier element part (11) comprises a first contact zone (19) and the second carrier element part (12) comprises a second contact zone (20), the first contact zone (19) comprising a first ply and the second contact area (20) comprising a second ply, and the first ply and the second ply being arranged adjacent to each other. Brake pad (3) according to one of claims 1 to 7, characterized in that each friction element (7) comprises a friction element carrying element 8, each friction element (7) being connected to an element respective friction element carrier (8) and the friction element carrier elements (8) being connected to the carrier element (4). Brake pad (3) according to one of claims 1 to 8, characterized in that the first supporting element part (11) comprises a first rear rear element (23) and a first rear front element (24) which is connected to the first rear rear element (23), and/or that the second supporting element part (12) comprises a second rear rear element and a second rear front element which is connected to the second rear rear element, the friction elements ( 7) being connected either to the first front rear element (24) or to the second front rear element. Brake pad (3) according to claim 10, characterized in that elevations (25) are arranged on the first front rear element (24) and on the second front rear element, the total number of elevations (25) corresponding to the total number of friction elements (7) arranged on the carrier element (4). Brake pad (3) according to claim 10, characterized in that a first intermediate element is arranged between the first rear rear element (23) and the first rear front element (24) and comprises an elevation (25) per element of friction (7) arranged on the first front rear element (24) and/or in that a second intermediate element is arranged between the second rear rear element and the second front rear element and comprises an elevation (25) per friction element (7) arranged on the second front rear element. Brake pad (3) according to claim 11 or 12, characterized in that one or more of the elevations (25) comprises at least one slot-shaped recess (26). Brake pad (3) according to one of claims 1 to 11, characterized in that the first carrier part (11) and the second carrier part (12) are provided with folds in several edge regions . Brake pad (3) according to one of claims 1 to 12, characterized in that the friction elements (7) are provided with recesses (13) in the area of the side surfaces (10), adjacent friction elements (7) extending into the recesses (13). Disc brake (1) comprising at least one brake pad (3), characterized in that the brake pad (3) is designed according to one of claims 1 to 15.