Brake pad

Abstract

The invention relates to a brake pad with a carrier element comprising a front face and a rear face, more than two friction elements disposed on the front face of the carrier element and connected thereto, the carrier element having a first and a second carrier element portion, friction elements being disposed on both the first and second carrier element portions. Figure 1

Description

Title of the invention: Brake pad

[0001] The invention relates to a brake pad, in particular for a railway vehicle, with a carrier element comprising a front face and a rear face, and more than two friction elements which are arranged on the front face of the carrier element and are connected to it.

[0002] The invention further relates to a disc brake comprising at least one brake pad.

[0003] 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 provides a good overview of the various manufacturing processes for the brake pad backing plates used in these disc brakes. Disc brakes of this type generally comprise several brake pad elements, which are assembled in groups on a carrier element, as can be seen, for example, in document DE 20 2005 004 040 U1 or document DE 44 36 457 A1. Rivets are generally used to mount the brake pad backing plates onto a carrier element. To prevent rotation, additional anti-rotation elements are used, which extend beyond the rear of the brake pad backing plate and fit into corresponding recesses in the carrier element..

[0004] Document DE 60 2010 05 T2 describes a brake pad for a railway vehicle, the brake pad comprising: a backing plate; a number of friction material blocks arranged on the backing plate and cooperating, by friction, with a rotating braking element; and connecting means for linking the blocks to the backing plate so that the blocks are held in respective rest positions extended from the backing plate. The connecting means include deformable elastic means enabling the blocks to move from rest positions to respective retracted working positions; and retaining means for holding the blocks connected to the elastic means at least in the rest positions; the elastic means being formed as a single piece with the backing plate. Consequently, the number of individual parts that make up the brake pad can be reduced.

[0005] Document AT 519090 A4 discloses a brake pad, particularly for a railway vehicle, with a carrier element comprising a front face and a rear face, more than two friction elements, a number of friction element carrier elements corresponding to the number of friction elements, each friction element being inseparably attached to a friction element carrier element. The corresponding friction element support elements are arranged on the front face of the carrier element and connected to it. The friction element support elements further comprise a fastening element, and the friction element carrier elements are each connected to the carrier element via these fastening elements. The fastening elements are manufactured as a single unit with the friction element carrier elements. Each friction element carrier element has only one fastening element. In addition, the carrier element includes a raised edge that at least partially overlaps the friction element carrier elements laterally, such that each friction element carrier element is positioned on at least one side, at least in certain areas, at a maximum distance of 5 mm from the edge.

[0006] The present invention is based on the goal of creating an improved brake pad for a railway vehicle.

[0007] The object 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 part of the carrier element, friction elements being arranged on both the first and the second part of the carrier element.

[0008] Furthermore, the object of the invention is achieved with the disc brake mentioned at the beginning, which includes the brake pad according to the invention.

[0009] The advantage here is that, thanks to the split bearing element, better adaptation of the brake pad to the friction partner, i.e., in particular a brake disc, can be achieved during friction engagement. It is thus possible, especially at the beginning of friction engagement, to obtain contact over the entire surface between the friction partners, which can also improve the visual appearance of the friction lining wear.

[0010] According to one embodiment of the invention, the first part of the carrier element can be provided to be connected to the second part of the carrier element, which makes it possible to improve or simplify the handling and assembly of the two parts of the carrier element.

[0011] According to one embodiment of the invention, the link can be designed with at least one articulation to support the above effects.

[0012] According to another embodiment of the invention, the connection between the first part of the load-bearing element and the second part of the load-bearing element may also be designed with spring-like elasticity, so that, in the assembly situation, the two parts of the load-bearing element can be held in position more securely. More specifically, this allows the two parts of the load-bearing element to automatically return to their starting position after a relative displacement of one with respect to the other.

[0013] According to another embodiment of the invention, a first mounting element may be arranged on the rear face of the first part of the carrier element and a second mounting element may be arranged on the rear face of the second part of the carrier element. This not only simplifies the assembly of the brake pad itself, but also allows for the reinforcement of the carrier element parts, thereby improving the torsional rigidity of the brake pad.

[0014] According to one embodiment of the invention, in order to improve the aforementioned effects, the first and second mounting elements can be made of profiled mounting plates. These also offer greater variability in the arrangement of the fixing areas.

[0015] According to one embodiment of the invention, it may also be provided that the first part of the carrier element and the second part of the carrier element are connected to each other via the first and second mounting elements, which makes it possible to reduce the number of components of the brake pad and possibly its weight.

[0016] To further increase the torsional rigidity of the brake pad, another embodiment may provide that the first part of the load-bearing element comprises a first contact area and the second part of the load-bearing element comprises a second contact area, the first contact area having a first ply and the second contact area having a second ply, the first and second ply being arranged adjacent to each other. The two parts of the load-bearing element 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 less audible.

[0017] According to one embodiment of the invention, improved friction performance can be achieved by enhancing the contact area of ​​the friction lining. In this embodiment, each friction element comprises a friction element carrier, each friction element being connected to a respective friction element carrier, and the friction element carriers being connected to the carrier element.

[0018] According to another embodiment of the invention, the first part of the load-bearing element may be provided that it comprises a first rear-posterior element and a first rear-anterior element which is connected to the first rear-posterior element, and / or that the second part of the load-bearing element comprises a second rear-posterior element and a second rear-anterior element connected to the second rear-posterior element, the friction elements being connected either to the first rear-anterior element or to the second rear anterior element. With this variant embodiment, the assembly of the individual friction elements can be simplified.

[0019] According to other embodiments of the invention, it may 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 carrier element, or that between the first rear rear element and the first front rear element, a first intermediate element is arranged which includes one elevation per friction element arranged on the first front rear element, and / or that a second intermediate element is arranged between the second rear rear element and the second front rear element and includes one elevation per friction element arranged on the second front rear element.With the risers, a more flexible mounting of the friction elements can be achieved, allowing for greater axial mobility and tilting movements. This eliminates the need for individual spring elements for each friction element. Consequently, the requirement for guide and mounting elements for the spring elements is also eliminated, resulting in a reduction in the number of brake pad components.

[0020] According to one embodiment of the invention, one or more of the risers may be provided to include at least one slot-shaped recess. By means of these recesses, the risers can achieve different tilting stiffnesses, the tilting stiffnesses of the brake pad being better suited to defined areas of use, and where appropriate, even within a brake pad, different tilting stiffnesses relative to each other can be given to the friction elements.

[0021] In order to further stiffen the brake pad, another embodiment of the invention may provide that the first and second parts of the load-bearing element are provided with folds in several edge areas. With this embodiment, smaller mounting elements can be used and the direct connection of the load-bearing element to a braking system or braking device can be simplified.

[0022] According to another embodiment of the invention, the friction elements may be provided to comprise lateral surfaces and to have recesses on the lateral surfaces, with adjacent friction elements extending into the recesses. Thus, with the friction elements, a configuration can be made possible that achieves mutual anti-rotation blocking, so that it is possible to dispense with additional anti-rotation blocking elements.

[0023] For a better understanding of the invention, it is explained in more detail with reference to the following figures.

[0024] They each show, in a simplified and schematic representation: [Fig.1] shows part of a disc brake with a brake pad placed on it; Figure 2 shows a brake pad in an oblique front view; Fig. 3 shows a brake pad in a rear oblique view; Figure 4 shows part of a brake pad in an exploded view and an oblique view; Figure 5 shows part of a brake pad in cross-section; Figure 6 shows part of an embodiment of the brake pad; Figure 7 shows part of another embodiment of the brake pad; Figure 8 shows part of another embodiment of the brake pad; Figure 9 shows a variant embodiment of a brake pad; Fig. 10 shows part of the brake pad according to Fig. 9 in an exploded view and an oblique view.

[0025] First, it should 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, and the explanations contained throughout the description can be applied to the same parts with the same reference numbers or the same 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 must be transferred to the new position in the event of a change of position.

[0026] Figure 1 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 to which at least one brake pad 3 is associated.

[0027] Since disc brakes 1 are known in themselves from the prior art, reference is made to the relevant prior art for further details. It is therefore clear that the disc brake 1 may include or does include additional assemblies, such as brake pad actuation elements, even though these are not shown in [Fig. 1] for the sake of clarity.

[0028] It should also be noted that the disc brake 1 according to [Fig.1] only has one brake pad 3. However, the disc brake 1 can also have more than two brake pads 3, for example three or four.

[0029] The design of the brake pad 3 is best seen in Figures 2 to 4. Preferably, all the brake pads 3 of a disc brake are designed in the same way. way. The following explanations concerning brake pad 3 can therefore also be applied to any other brake pad 3 that may be present on the disc brake 1.

[0030] The brake pad 3 includes a carrier element 4 which includes a front face 5 and a rear face 6.

[0031] 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 may also be arranged, for example two or four or six or eight or ten or fourteen, etc.

[0032] 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 made directly, but according to an alternative embodiment of the brake pad 3 with the interposition of friction element carrier elements 8. Preferably, each friction element 7 is arranged on a friction element carrier element 8 and connected to it. Thus, the brake pad 3 preferably comprises a number of friction element carrier elements 8 corresponding to the number of friction elements 7. The friction element carrier elements 8 are, for their part, arranged on the front face 5 of the carrier element 4 and connected to it.

[0033] The friction element carriers 8 are preferably exactly as large in size – viewed in plan view – as a friction element 7 viewed in the same direction. Lateral surfaces 9 of the friction elements 7 are thus aligned with lateral surfaces 10 of the friction element carriers 8.If necessary, the friction element carriers 8 may be up to 10%, in particular up to 5%, larger than the friction elements 7 (again viewed in plan view), such that the friction element carriers 8 include an annular free edge along the outer circumference, which may also be raised if necessary, so that the friction elements 7 are at least partially surrounded along their outer circumference by the friction element carriers 8, although the last two embodiments of the brake pad 3 are not the preferred embodiments. According to another embodiment of the brake pad 3, the friction element carriers 8 may be smaller, up to 10%, in particular up to 5%, than the friction elements 7 (viewed in plan view).Mixed variants of these design variants are also possible, i.e. the brake pad 3 has friction element support elements 8 that are smaller than the friction elements 7 and / or that are larger than the friction elements 7 and / or that are the same size as the friction elements 7.

[0034] The load-bearing element 4 comprises, or consists of, a first part of a load-bearing element 11 and a second part of a load-bearing element 12. The two parts of the load-bearing element 11, 12 are arranged in the brake pad 3 so as to be adjacent to each other.

[0035] As can be seen in Figures 1 and 2, friction elements 7 are arranged on both the first and second portions of the carrier element 11, 12 and are connected to them. In the preferred embodiment, both portions of the carrier element 11, 12 each have the same number of friction elements 7, for example, six each.

[0036] It should be noted that the two-part embodiment of the load-bearing element 4 is preferred. Within the scope of the invention, the load-bearing element 4 may also comprise additional load-bearing element sections on which friction elements 7 are arranged.

[0037] It should also be specified that the friction elements 7 are preferably arranged on the first part of the carrier element 11 or on the second part of the carrier element 12 in such a way that they are each arranged exclusively within the surface defined by the first or second part of the carrier element 11, 12. In other words, none of the friction elements 7 extends from the first part of the carrier element 11 to the second part of the carrier element 12.

[0038] The load-bearing element parts 11, 12, or their components, as will be discussed below, can be produced by stamping a flat sheet of metallic material, in particular steel. The load-bearing element parts 11, 12 can thus be produced at least approximately with the final contour shape. Other processes, such as cutting, for example laser cutting, etc., can of course also be used for this purpose.

[0039] In top view, the friction elements 7 may have a cross-section that is at least approximately triangular with rounded points. They may also have a different cross-sectional shape, such as hexagonal.

[0040] According to the preferred embodiment of the brake pad 3 shown in the figures, the friction elements 7 comprise recesses 13 in the lateral surfaces 10. The recesses 13 can be designed to extend continuously in the axial direction, so that the friction elements 7 comprise indentations, as seen from above on the end face. In particular, they can have a rounded and concave profile, the friction elements 7 thus being able to be described as "triconcave", since each side of the substantially triangular cross-section (in a view of the end face) can comprise such a rounded recess 13 in the form of an indentation (i.e., a lateral face pulled inwards at the center of the lateral edge).

[0041] The recesses 13 have the advantage that the adjacent friction elements 7 are nested one inside the 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, in [Fig. 1]. With this arrangement, an anti-torsion device for the friction elements 7 can be created by the fact that the friction elements prevent each other from twisting, so that additional fastening elements, such as those known in the prior art for anti-torsion devices of friction elements, are not necessary.

[0042] Although the aforementioned triconcave embodiment of the friction elements 7 is preferred, the friction elements 7 may also have other cross-sectional shapes with recesses 13 in the side walls or the side surface(s).

[0043] The friction elements 7 are preferably made of a sintered material, for example a copper-based sintered material. However, other materials can also be used for the friction elements 7, for example a fiber-reinforced resin.

[0044] The friction elements 7 can be glued or brazed or welded onto the friction element carrier elements 8 or sintered onto the friction element carrier elements 8, as is known per se.

[0045] The friction element carriers 8 can include a plurality of recesses, in particular passages 14, as can be 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 carrier 8 is made possible.

[0046] Furthermore, the friction element carriers 8 may include a central passage 15 which serves to connect the friction element carriers 8 to the carrier element 4. This can be done for example by means of a connecting element, for example a rivet 16. The friction element 7 may include a corresponding passage 17 for the attachment of this connecting element.

[0047] To connect the friction element carrier elements 8 to the carrier element 4, a recess, in particular a passage 18, is provided in the latter for each friction element carrier element 8, up to which or through which recess the connecting elements extend.

[0048] Preferably, passages 14, 15, 17 and 18 each have a circular cross-section seen in a top view. However, other cross-sectional shapes are also possible.

[0049] The dimensions of the cross-sections of 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 contact, at least partially, in particular totally, with the lateral walls delimiting the passages 14, 15, 17 and 18. Preferably, a friction connection and / or a form connection and / or a force connection is formed between the lateral walls delimiting the passages 14, 15, 17 and 18 and the connecting elements.

[0050] The first part of the load-bearing element 11 comprises a first contact zone 19 on its outer circumference, and the second part of the load-bearing element 12 comprises a second contact zone 20 on its outer circumference. The two contact zones 19 and 20 are the areas of the parts of the load-bearing elements 11 and 12 in which they bear against each other. These contact zones 19 and 20 can only comprise the two outer surface sections of the parts of the load-bearing element 11 and 12 with which the two parts of the load-bearing element 11 and 12 bear against each other.

[0051] According to a preferred embodiment of the brake pad 3, however, the first contact area 19 may include a first raised edge 21, in particular a first fold, and the second contact area 20 may include a second raised edge 22, in particular a second fold, as can be seen in particular in Figures 2, 4 and 5. The first raised edge 21 extends over at least a partial area of ​​the first contact area 19, preferably over the entire length of the first contact area 19, and / or the second raised edge 22 extends over at least a partial area of ​​the second contact area 20, preferably over the entire length of the second contact area 20.

[0052] By supporting the two raised edges 21, 22 against each other (at the junction of the two load-bearing elements 11, 12), mutual support of the two parts of load-bearing element 11, 12 can be obtained.

[0053] As can be seen in particular in Figures 9 and 10, according to another embodiment, other end zones 33, 34 of the carrier elements 11, 12 (only the carrier element 11 is shown in [Fig. 10]) which are formed opposite the contact zones 19, 20, also include 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 [Fig. 10].

[0054] By folding the load-bearing elements 11, 12, it is possible to make the latter more rigid and / or prevent their rotation, possibly also that of the friction elements 7.

[0055] According to another embodiment of the brake pad 3, the first part of the bearing element 11 and / or the second part of the bearing element 12 may be provided with a raised edge, in particular folds, in several edge areas along the outer circumference. These may be designed as the first edge 21 or the second edge 22. However, the brake pad 3 does not include preference that 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.

[0056] The first and second edges 21, 22 or the other raised edges protrude beyond the supporting element 4 on the front face 5.

[0057] The height of the first and second edge 21, 22 or other raised edges can be, for example, between 1 mm and 5 mm.

[0058] In the simplest embodiment, the bearing element 4 is designed as a single layer. According to a preferred embodiment of the brake pad 3, however, the first part of the bearing element 11 may be provided that it comprises a first rear element 23 and a first rear element 24 which is connected to the first rear element 23, and / or that the second part of the bearing element 12 comprises a second rear element and a second rear element connected to the second rear element. Since the structure of the bearing elements 11, 12 of this embodiment is the same as that of the two rear elements 23, 24, only the first part of the bearing element 11 is shown in the Fig. The corresponding explanations can also be applied to the second part 12 of the bearing element.

[0059] In this embodiment, the friction elements 7 are connected either to the first rear anterior element 24, or to the second rear anterior element.

[0060] The first rear anterior element 24 and / or the second rear anterior element can be formed with a plurality of elevations 25 (by forming). These elevations 25 can be cap-shaped or dome-shaped, as seen in particular in [Fig. 5]. The total number of elevations 25 corresponds to the total number of friction elements 7 arranged on the supporting element.

[0061] These risers 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 risers 25 can be predefined according to the application. The shape and size influence the rigidity and therefore the axially permissible movement. In addition, this type of design also allows tilting movements of the friction elements 7, which provides three degrees of freedom for this system.

[0062] According to another embodiment, a first intermediate element may also be provided between the first rear element and the first rear element 23, 24, which includes one of the elevations 25 for each friction lining disposed on the first rear element, and / or between the second rear element and the second rear element, a second intermediate element may be provided, which includes one of these elevations for each friction lining disposed on the second rear element. For clarity, the embodiment according to [Fig. 5] may be interpreted as such that the friction element carrier 8 shown corresponds to the first rear anterior element 24 and that the first rear anterior element 24 shown in [Fig. 5] corresponds to the intermediate element. In this case, however, only one intermediate element is provided for each carrier element portion 11, 12, which each time includes all the elevations 25 associated with that carrier element portion 11, 12.

[0063] The elevations 25 are made in the direction of the bearing elements of friction elements 8, so that the rear face 6 of the first front rear element 24 or of the second front rear element (or the intermediate element) is formed with depressions.

[0064] With these elevations 25, support elements (support bosses) are created, so that the friction elements 7 are held in pivot position. In these variants, the friction elements 7, i.e. the bearing elements of friction elements 8, rest (exclusively) on these elevations 25, as can be seen for example in [Fig. 5].

[0065] The risers 25 can be made, for example, by stamping or pressing. In particular, the risers 25 are made of the same material as the first front rear element 24 or the second front rear element (or the intermediate element) and are connected to it in one piece.

[0066] The risers 25 can have a maximum height of between 0.5 mm and 4 mm, in particular between 2 mm and 3 mm.

[0067] By means of the risers 25, it is achieved that the rear of the friction element carriers 8 does not rest on the entire surface of the carrier element 4, i.e., on the first front rear element 24 or the second front rear element (or the intermediate element). This, in turn, allows the friction element carriers 8 to be mounted on the carrier element 4 in such a way that the friction elements 7 can pivot when the load is not applied over their entire surface when the brake is closed. This pivoting capability enables the friction elements 7 to bear against the brake disc 2 over its entire surface ([Fig. 1]). A type of oscillating bearing can thus be formed. However, with these risers 25, the stiffness behavior of the carrier element 4 itself and the temperature behavior of the brake pad 3 can be influenced.

[0068] According to another embodiment of the brake pad 23, one or more or all of the elevations may include one or more slot-shaped recesses 26 (shown in dashed lines for an elevation 25 in [Fig. 4]), in particular passages. These slot-shaped recesses may extend radially and 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 various slot-shaped recesses 26 can vary. Using these slot-shaped recesses 26, the rigidity of the elevations 25 can be influenced, modified, and thus adjusted.

[0069] Preferably, a mounting element 27 (which may also be called a dovetail) is arranged on the rear face 6 of the first part of the load-bearing element 11, and on the rear face 6 of each of the second parts of the load-bearing element 11, 12, a second mounting element 28 (which may also be called a dovetail) is arranged, which mounting elements are connected to the corresponding part of the load-bearing element 11, 12. By means of these mounting elements 27, 28, the connection to the brake caliper or the brake pad holder (both not shown) can be established.

[0070] The mounting elements 27, 28 include specifically chosen passages that can be aligned with passages respectively in the first or second part of the carrier element 11, 12 or in their components. In the area of ​​these passages, the parts of the carrier element 11, 12 can be attached to each other on the mounting elements 27, 28 by a material bonding by welding. Alternatively, other assembly technologies or even screw connections constitute a possibility for joining these brake pad components.

[0071] It should be mentioned at this stage that the first and second 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 rear elements 24. These openings serve for the mounting of the friction elements 7.

[0072] The first and / or second mounting element 27, 28 may be flat sheet metal elements. According to the preferred embodiment, however, they are formed from profiled mounting sheets. For this purpose, a central section (extending in the longitudinal direction of the mounting elements 27, 28) may be designed to be raised relative to the two adjacent edge sections, so that the mounting elements 27, 28, viewed from the rear, may include a channel extending in the longitudinal direction. The central section may thus be positioned at a distance from the surface of the respective supporting element portion 11, 12, as can be seen, for example, in [Fig. 3].

[0073] The mutual support described of the first part of the load-bearing element 11 on the second part of the load-bearing element 12 also allows the use of shorter mounting elements 27, 28. For example, the mounting elements 27, 28 can 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 load-bearing element 11, 12 viewed in the same direction. With the described embodiment of the formation of additional raised edges (outside the contact areas 19, 20 of the parts of the load-bearing element) 11, 12), a complete integration of the mounting element characteristic into the respective load-bearing element part 11,12 can be made possible.

[0074] The first and second parts of the carrier element 11, 12 can be loosely arranged in the brake pad 3 against each other. According to an alternative embodiment of the brake pad 3, however, the first part of the carrier element 11 can also be connected to the second part of the carrier element 12. The connection can be made, for example, in the area of ​​the raised edge in the contact areas 19, 20 of the parts of the carrier element 11, 12 by means of connecting elements, such as screws 29 or rivets, as illustrated in [Fig. 6].

[0075] According to another embodiment illustrated in [Fig.7], the connection can also be designed in an articulated manner, for example by means of a joint or a hinge 30.

[0076] The first part of the carrier element 11 can also be connected to the second part of the carrier element 12 via the wafer support, in particular if the first part of the carrier element 11 and the second part of the carrier element 12 are loosely arranged.

[0077] It is also possible that the connection of the first part of the carrier element 11 to the second part of the carrier element 12 is designed with spring-type elasticity, for example by means of a helical spring 31, as illustrated in [Fig.8].

[0078] The first part of the load-bearing element 11 can also be connected to the second part of the load-bearing element 12 via the first and second mounting elements 27, 28, in which they are correspondingly connected to each other. Alternatively, a single mounting element 27 can be used, on which the two parts of the load-bearing element 11, 12 are arranged and connected.

[0079] Figures 9 and 10 show another variant of the brake pad 3. Not only are the folds of the bearing elements 11, 12 present in the entry and exit zones, as explained above, but these figures also show the design with friction elements 7 having different cross-sectional shapes. Furthermore, the explanations above, adapted as appropriate, can also be applied to this variant embodiment of the brake pad 3.

[0080] As can be seen in particular in [Fig.9], the brake pads 3 have an essentially hexagonal cross-section. The points are pointed, but can also be rounded.

[0081] In this embodiment of the brake pad 3, the friction elements 7 also include recesses 13 in the lateral 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 of the end face. In particular, they may have a concave rounded profile, as explained above. However, in the embodiment illustrated in [Fig. 9], the friction elements 7 are formed with lateral surfaces 10 of different shapes. As can be seen, in addition to the concave rounded lateral surfaces 10, the friction elements 7 also include at least one flat lateral surface 10, i.e., a lateral surface 10 without the recess 13.

[0082] Within the framework of the invention, several lateral surfaces of the friction elements 7 can be flat in this way, but in all cases at least one lateral surface 10 includes a recess 13.

[0083] Furthermore, it can be provided that the curves of the lateral surfaces 10 of the friction elements 7 can have different radii of curvature. This can be the case for a single friction element 7, just as it can be the case with respect to other friction elements 7.

[0084] It can also be seen in [Fig.9] that the friction elements 7 can be arranged at least partially with the points opposite each other.

[0085] With regard to the fold mentioned above, it should be noted that all 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.

[0086] In summary, this invention is characterized in the preferred embodiment by a divided substructure which has increased torsional rigidity thanks to its structural design, which secures the friction elements, by the combination of the shape of the friction elements and their arrangement, against torsion 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.

[0087] The embodiment examples show or describe possible embodiment variants of the brake pad 3, it being noted at this stage that combinations of the different embodiment variants with each other are also possible.

[0088] Finally, for the sake of clarity, it should be specified 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.

[0089] List of reference numbers 1. Disc brake 2. Brake disc 3. Brake pad 4. Load-bearing element 5. Front view 6. rear view 7. Friction element 8. Friction element carrier 9. lateral surface 10. Lateral surface 11. part of load-bearing element 12. part of load-bearing element 13. Obviously 14. passage 15. passage 16. rivet 17. passage 18. passage 19. Contact zone 20. Contact zone 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. Helical spring 32. length 33. End zone 34. End zone

Claims

Claims

1. Brake pad (3), in particular for a railway vehicle, with a carrier element (4) which comprises a front face (5) and a rear face (6), more than two friction elements (7) which are arranged on the front face (5) of the carrier element (4) and are connected thereto, which carrier element (4) comprises a first and a second carrier element part (11, 12), friction elements (7) being arranged on both the first and the second carrier element part (11, 12), characterized in that the first carrier element part (11) comprises a first contact area (19) and the second carrier element part (12) comprises a second contact area (20), the first contact area (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.

2. 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).

3. 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 made with at least one joint.

4. Brake pad (3) according to claim 2 or 3, characterized in that the connection of the first carrier element part (11) to the second carrier element part (12) is designed with spring-like elasticity.

5. 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 carrier element part (12).

6. Brake pad (3) according to claim 5, characterized in that the first mounting element (27) and the second mounting element (28) are designed as profiled mounting sheets.

7. Brake pad (3) according to claim 5 or 6, characterized in that the first carrier element part (11) and the second part of the carrier element (12) are connected to each other via the first and second mounting elements (27, 28).

8. Brake pad (3) according to one of claims 1 to 7, characterized in that each friction element (7) comprises a friction element carrier element 8, each friction element (7) being connected to a respective friction element carrier element (8) and the friction element carrier elements (8) being connected to the carrier element (4).

9. Brake pad (3) according to one of claims 1 to 7, characterized in that the first carrier element part (11) comprises a first rear rear element (23) and a first front rear element (24) which is connected to the first rear rear element (23), and / or that the second carrier element part (12) comprises a second rear rear element and a second front rear 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.

10. Brake pad (3) according to claim 9, 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).

11. Brake pad (3) according to claim 9, characterized in that a first intermediate element is arranged between the first rear element (23) and the first front element (24) and comprises an elevation (25) per friction element (7) arranged on the first front element (24) and / or in that a second intermediate element is arranged between the second rear element and the second front element and comprises an elevation (25) per friction element (7) arranged on the second front element.

12. Brake pad (3) according to claim 10 or 11, characterized in that one of the elevations (25), or several of the elevations (25), comprises at least one slot-shaped recess (26).

13. Brake pad (3) according to one of claims 1 to 10, characterized in that the first carrier element part (11) and the second carrier element part (12) are provided with folds in several edge areas.

14. Brake pad (3) according to one of claims 1 to 11, 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).

15. 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 14.

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