DISC BRAKE AND MUFFLER ARRANGEMENT

Description

[0001] The invention relates to a disc brake having the features of the preamble of claim 1.

[0002] The invention further relates to a mudguard arrangement suitable for use in the disc brake, comprising the features of the preamble of claim 11, and a brake pad with a mudguard arrangement fixed thereto according to claim 18.

[0003] When repairing and maintaining motor vehicles or trailers, brake pads often have to be installed under poor visibility conditions, for example due to limited space or inadequate lighting. Since brake pads are particularly important components for vehicle safety, it is advisable to take appropriate precautions to prevent installation errors.

[0004] From EP 0 347 523 B1, a brake caliper is known in which, in order to ensure that only the intended brake pads can be installed in the designated locations, additional projections or recesses are formed on the support surfaces of the brake carrier that guide the brake pads during the axial movement. The contours of these projections or recesses are matched to corresponding recesses or projections on the brake pads. This keying is achieved during manufacturing by simultaneously creating the keying structures during the machining of the support surfaces. This ensures that only the intended brake pads can be inserted into the brake carrier.

[0005] However, it is not possible to prevent a correct brake pad from being installed in the wrong position. The prevention of errors during brake pad installation is also addressed in DE 29 19 535 A1 and EP 0 752 541 A1. The former proposes brake pad pairs whose friction linings are of different lengths in the circumferential direction. EP 0 752 541 A1 proposes an asymmetrical design of the pad backing plates and the support surfaces of the two brake pads. The asymmetrical geometry of the brake pads and the pad recesses of the brake carrier can lead to the brake exhibiting different operating characteristics in the two possible directions of rotation.

[0006] The prevention of incorrect installation of brake pads in a floating caliper disc brake is also addressed in DE 43 32 709 A1. Axial projections resembling knobs are molded onto the back surfaces of the pad backing plates. If installed incorrectly, these projections prevent the two brake pads from being mounted with sufficient clearance between them to allow the brake disc to fit between them. Conversely, if the brake pads are installed correctly, the distance between their friction surfaces is large enough to accommodate the brake disc. This prevents the floating caliper from being mounted on the brake disc with, for example, brake pads inserted at an angle of 180°.

[0007] From DE 10 2014 113 617 A1, a disc brake with brake pads is known. These pads are inserted into pad recesses of a brake carrier and consist of a friction lining and a backing plate. A spring element with two resilient ends is arranged between a lateral edge of the backing plate and a support horn of the brake carrier. The first end is designed to support the brake pad against a foot region of the support horn. The second end is designed to support the brake pad against a head region of the support horn. The brake pad itself is asymmetrically designed with respect to its center in the circumferential direction, so that it could not be inserted into the pad recess rotated by 180°.

[0008] EP 1 974 150 B1 describes a disc brake with a brake carrier in the form of a flat plate. The brake carrier is provided with a pad recess for the brake pad. The pad recess is provided with guide surfaces extending in the braking direction; however, the actual guidance of the brake pad is achieved by means of additional wear plates inserted into the pad recess between the brake pad and the pad recess. Each wear plate has a radial and a tangential guide surface for the brake pad. For fixation to the brake carrier, the wear plates are provided with tabs, with first tabs extending over the inside and second tabs over the outside of the brake carrier.

[0009] Disc brakes are known from DE 10 2021 200 969 A1 and DE 10 2018 005 036 A1, in which spring plates are provided between a brake pad and a brake carrier. For assembly, the spring plates are first arranged on the brake carrier, and then the brake pads are inserted axially, i.e., parallel to the axis of rotation of the brake disc, into the spring plates.

[0010] From US 2014 / 0367208 A1 it is known to provide return spring plates arranged on the brake pad.

[0011] The invention is based on the objective of developing a disc brake in which, during the insertion of a brake pad, it is possible to determine both whether it is intended for the disc brake and whether it is mounted in the correct installation position.

[0012] To solve this problem, a disc brake with the features of claim 1 is proposed. This brake consists, among other things, of a brake carrier that can be mounted on a vehicle axle and a brake caliper that bridges brake pads arranged on the inner and outer surfaces of a brake disc. The brake pads consist of a friction lining facing the brake disc and a backing plate, wherein a pressure element guided in the brake caliper can be positioned against the backing plate of the inner brake pad.

[0013] The brake carrier has a pad recess for receiving the inner brake pad, with two opposing first support surfaces for circumferential support of the brake pad and second support surfaces for radial inward support of the brake pad. The brake carrier is flat, at least around the pad recess, with an inner and a parallel outer surface.

[0014] A metal plate is arranged between the brake pad and each first support surface. This plate has tabs for securing it in the direction of travel. An inner tab is supported against the inside of the brake carrier, and an outer tab against the outside. The plates are thus locked to the brake carrier in the direction of travel and against the direction of travel, respectively.

[0015] The metal sheets are fixed to the backing plate by means of retaining elements, whereby in the direction of delivery the fixing force of the retaining elements is less than the fixing force of the tabs supported against the inside of the brake carrier.

[0016] At least one of the plates is provided with a single mounting indicator which, when mounted, is located in a plane E situated between the two planes containing the inner and outer surfaces of the brake carrier. In the direction of installation, the distance between plane E and the inner surface plane differs from that between plane E and the outer surface plane.

[0017] Therefore, level E, where the mounting indicator – which is, of course, unique – is located when the brake pad is correctly installed, is not situated in the center between the inner and outer surfaces of the brake carrier, but rather off-center. Furthermore, in the same level E, the brake carrier is provided with a structure – also unique – into which the mounting indicator engages, or conversely, which engages with the mounting indicator.

[0018] The basic idea behind this solution is that the mounting indicator on the metal plate only engages with the structure on the brake carrier when the friction lining, and not when the backing plate of the lining, is facing the brake disc. Therefore, even when attempting to insert the brake pad into the pad recess of the brake carrier, it is immediately apparent whether the installation is in the correct position.

[0019] If the brake pad is installed incorrectly, and especially if it is rotated 180°, the positions of the mounting indicator on the metal plate and the corresponding structure on the brake carrier will not align. The brake pad, with the metal plate attached to it, cannot then be fully lowered into the pad recess, resulting in the retaining clip that runs over the recess not being able to be closed. This clearly indicates to the installer that the brake pad has not been inserted into the recess in the correct orientation. It also reveals whether the brake pad is intended for the specific brake system. If it is not, the brake pad cannot be inserted into the recess.

[0020] Advantageous embodiments of the disc brake are specified in the dependent claims.

[0021] It is specifically proposed that the plates be angle brackets whose basic body consists of a radial leg and a tangential leg. Here, the terms "radial" and "tangential" are to be understood in relation to the axis of rotation around which the brake disc of the disc brake rotates. The angle brackets rest with the outer side of their radial leg against the first support surface, and with their tangential leg against the second support surface.

[0022] The mounting indicator is located on the outside of the radial leg, i.e., on the side where the radial leg rests against the first support surface of the lining shaft.

[0023] Preferably, further tabs are formed on the tangential leg, one of which is an inner tab supported against the inside and one outer tab against the outside of the brake carrier.

[0024] Preferably, the surfaces where the metal sheets contact the first and second support surfaces of the brake pad recess are arranged symmetrically around the center of the recess in the circumferential direction. An advantage of this symmetry is that the disc brake thus designed operates equally in both possible directions of rotation, i.e., with the same braking characteristics.

[0025] With the aim of cost-effective manufacturing, it is proposed that the sheets, including the tabs and the mounting indicator, be one-piece stamped and bent parts.

[0026] Preferably, the inner and outer tabs formed on the radial leg each consist of a base section connected to the radial leg and a clamping section extending away from the base section, wherein the distances between the clamping sections of the tabs are smaller than the distances between the base sections of the tabs. In this case, it is advantageous for the clamping sections to extend away from the base sections in the longitudinal direction of the respective radial leg.

[0027] Preferably, the mounting indicator is integrally formed on an edge of the radial leg facing away from the tangential leg. In this case, the mounting indicator is preferably connected to the edge via a 180° arc and otherwise extends parallel to the radial leg.

[0028] Preferably, the structure with which the brake carrier is provided is a recess into which the mounting indicator engages by immersion. The recess is, for example, a blind hole that is open on the side facing away from the second support surfaces.

[0029] The retaining elements can be, for example, arms molded onto the metal sheets, with these arms engaging in recesses on the back of the backing plate by immersion.

[0030] The recesses can be blind holes, with these blind holes facing away from the friction lining. From a manufacturing perspective, it is advantageous if the retaining elements are fixed in the recesses using dowels. Furthermore, it is proposed that the lining backing plate have struts on its rear side to reduce weight, extending from a strut-free central area to a frame-shaped reinforcing edge, and that the recesses are located within this frame-shaped reinforcing edge.

[0031] To solve the above-mentioned problem, a mudguard arrangement according to claim 11 and a brake pad with a mudguard arrangement fixed thereto according to claim 18 are also proposed.

[0032] Further advantages and details are explained below using an exemplary embodiment, which is shown in the drawings. These show: Fig. 1 : a disc brake for a vehicle in a perspective view; Fig. 2 : in perspective view the brake carrier of the disc brake with a

[0033] brake pad mounted in the pad shaft of the brake carrier, wherein the brake pad is provided with a protective plate arrangement consisting of two angle plates temporarily fixed to the brake pad; Fig. 3 : the brake pad from its back side with the angle brackets of the mudguard assembly fixed to it; Fig. 4: the brake pad from its back side with the angle brackets shown separately here, i.e. before they are fixed to the brake pad.

[0034] The in Fig. 1 The disc brake shown is of the floating caliper type and is, for example, a pneumatically actuated commercial vehicle disc brake. The compensation caused by the wear of the two brake pads 5, 6 and the brake disc 1 is achieved by an adjusting device integrated into the disc brake caliper. Components of the disc brake are a rigid brake carrier 2, which is mounted fixed to the axle, and the brake caliper 3, which is longitudinally movable, i.e., floating, on the brake carrier 2.

[0035] A clamping device is located on or in the brake caliper 3. This device includes the mechanically, hydraulically, or preferably pneumatically driven mechanism for generating the brake clamping force, as well as actuating elements to exert an actuating force on the two brake pads 5, 6 of the disc brake. Preferably, an actuating movement in the actuating direction R is exerted only on the inner, action-side brake pad 5 by a pressure element guided in the brake caliper, whereas the outer, reaction-side brake pad 6 is fixed in the actuating direction R within the floatingly mounted brake caliper 3.

[0036] The two brake pads 5, 6, each arranged in pad slots of the disc brake, are composed in the usual manner of a friction lining 8 acting against the brake disc 1 rotating on the axis of rotation A, and a backing plate 9. The backing plate 9 is larger than the friction lining 8 and thus preferably projects beyond the friction lining 8 on all sides. Support forces during braking are therefore transferred via the lateral edges 9A of the backing plate 9 into the surrounding pad slot, and not via the friction lining 8.

[0037] The support surfaces on the backing plates 9, which transfer the braking forces to the pad shaft, are preferably designed symmetrically to the center of the brake pads in the circumferential direction, so that the brake exhibits the same braking characteristics in both conceivable directions of rotation.

[0038] According to Fig. 2The pad recess 20 for the directly positioned inner brake pad 5 is located in the brake carrier 2. The pad recess 20 serves to receive, support and guide the inner brake pad 5. This pad recess 20 is located on the side of the brake disc 1 facing inwards.

[0039] The reaction-side outer brake pad 6, on the other hand, is located in its own pad recess on the outside of the brake disc 1. In the exemplary embodiment, the pad recess for the brake pad 6 is located directly in the brake caliper 3, which is provided with corresponding support surfaces for the outer brake pad 6.

[0040] The pad recess 20 for the inner brake pad 5 is, viewed in the direction of the brake disc and thus in the braking direction R, a recess in the rigid brake carrier 2. The recess is aligned with the axis of rotation A ( Fig. 1) turned away open and otherwise of approximately rectangular contour, which is why the brake pad 5 that can be used therein also has an essentially rectangular shape, but this shape has arc-shaped curves along its outer edge and partly also along its inner edge corresponding to the circular shape of the brake disc 1.

[0041] The contour or wall of the lining channel 20 comprises first support surfaces for supporting the brake lining 5 in the circumferential direction and second support surfaces for supporting the brake lining 5 radially inwards, i.e., towards the axis of rotation A. The two first support surfaces face each other. The two second support surfaces are aligned with each other. All first and second support surfaces extend over a certain width in the direction of application R, i.e., in the direction of movement of the brake lining 5 during its application.

[0042] The brake carrier 2 is flat overall, or at least around the pad recess 20, with an inner side 16 facing inwards towards the vehicle and away from the brake disc, and an outer side 17 parallel to the inner side 16, facing outwards towards the vehicle and towards the brake disc.

[0043] Between the brake pad 5 and the first and second support surfaces of the pad recess 20, two plates 30 are arranged, which together form a protective plate arrangement. The surfaces on which the plates 30 are in contact with the first and second support surfaces of the pad recess are arranged symmetrically with respect to the center of the pad recess 20 in the circumferential direction, so that the disc brake exhibits the same braking behavior in both conceivable directions of rotation.

[0044] In the exemplary embodiment, the two plates 30 of the guard plate assembly are angle plates. The base body of the angle plate consists of a radial leg 31 supported against the first support surface of the track 20 and a tangential leg 32 supported against the second support surface of the track 20.

[0045] Fig. 4 Figure 3 shows that the radial legs 31 and tangential legs 32 each have contact surfaces 25 on their inner sides. The contact surfaces 25 serve to support the brake pad 5 against the braking reaction forces occurring during braking, as well as to guide the brake pad in the approach direction R. For sufficiently long guidance in the approach direction R, where the approach direction R is parallel to the axis of rotation A, the contact surfaces 25 of the radial legs 31 and tangential legs 32 each extend from an inner edge 26 to an outer edge 27.

[0046] The plates or angle plates 30 are formed with pairs of tabs 36, 37 for fixing them in the delivery direction R. An inner tab 36 is formed on the inner edge 26. It is supported against the inner side 16 of the brake carrier 2. An outer tab 37 is formed on the outer edge 27. It is supported against the outer side 17 of the brake carrier 2.

[0047] The inner and outer tabs 36, 37 are preferably arranged and designed symmetrically to each other on the sheet 30. An inner tab 36 and an outer tab 37 are located on both the radial leg 31 and the tangential leg 32.

[0048] The inner and outer tabs 36, 37 formed on the radial leg 31 each consist of a base section 34 connected at right angles to the radial leg 31 and a clamping section 35 extending away from the base section 34. The distances between the clamping sections 35 are smaller than the distances between the base sections 34. In particular, the distances between the clamping sections 35 are less than or at most equal to the thickness of the brake carrier 2 between its inner side 16 and its outer side 17. For a spring-like clamping behavior, the clamping sections 35 extend away from the base sections 34 in the direction of the main longitudinal extent of the respective radial leg 31.

[0049] During the installation of the brake pad 5, i.e., while inserting it into the pad recess 20, the angle brackets 30 are already fixed to the backing plate 9 of the brake pad 5. This fixing is temporary and is achieved with retaining elements 40, which are formed on the brackets 30 and anchored in the backing plate 9. In the exemplary embodiment, each of the two angle brackets 30 is anchored in the backing plate 9 by two retaining elements 40, one of which is formed on the radial leg 31 and the other on the tangential leg 32 of the bracket.

[0050] The brake pad 5 is inserted into the pad recess 20 from above, i.e., with the mounting direction parallel to the inner surface of the brake disc 1, which serves as the friction surface. When the brake pad 5, with the plates 30 attached to it, is inserted into the pad recess 20, the tabs 36 come to rest against the inner surface 16, and the other tabs 37 against the outer surface 17 of the brake carrier 2. In this way, the plates 30 are fixed to the brake carrier 2 in the direction of application R and against the direction of application R, and thus the brake pad 5 is also fixed in the pad recess 20 in the direction of application and against the direction of application R.

[0051] This fixation, however, is only temporary. The tabs 36, supported against the inner side 16 of the brake carrier 2, and the retaining elements 40 are designed and dimensioned differently in such a way that, in the approach direction R, the fixing force of the tabs 36 is greater than that of the retaining elements 40. Therefore, when increased braking pressure is first applied to the backing plate 9 in the approach direction R, only the retaining elements 40, due to their lower fixing force, yield by detaching from or out of the backing plate 9. In contrast, the more robustly designed tabs 36 retain their function of fixing the plates 30 in the approach direction R permanently and throughout all subsequent braking operations.

[0052] The same applies to the other tabs 37, which ensure the function of fixing the plates 30 to the brake carrier in the opposite direction, i.e., against the delivery direction R, throughout the entire subsequent braking operation.

[0053] At least one of the angle brackets 30, but preferably both, are provided with a single mounting indicator 45. This indicator is formed integrally on an edge 44 of the angle bracket 30 facing away from the tangential leg 32. In the assembled state, the mounting indicator 45 is located in a plane E that is arranged between the two mutually parallel planes in which the inner side 16 and the outer side 17 of the brake carrier 2 are located.

[0054] Crucially, in the braking direction R, the distance between plane E and the plane of the inner surface 16 on the one hand, and to the plane of the outer surface 17 on the other, is different. Therefore, plane E, in which the mounting indicator 45 – which is present only once – is located when the brake pad 5 is correctly installed, is not situated midway between the inner surface 16 and the outer surface 17, but rather off-center. Furthermore, the brake carrier is provided with a structure 47 – also present only once – in the same plane E, and only in this plane E. Fig. 2 ), into which the assembly indicator 45 intervenes by immersion.

[0055] In the exemplary embodiment, the mounting indicator 45 is arranged and attached to an edge 44 of the radial leg 31 facing away from the tangential leg 32.

[0056] Likewise, how Fig. 4The distance between the plane E, in which the mounting indicator 45 is located, and the plane of the inner edge 26 of the angle plate 30 on the one hand, and the plane of the outer edge 27 of the angle plate 30 on the other, is shown in the braking direction R. The mounting indicator 45 is therefore not centrally located with respect to the planes in which the inner edges 26 and outer edges 27 of the plates are located.

[0057] The structure 47 is of such a size that the assembly indicator 45 just barely fits into it, or conversely, the structure 47 just barely fits into the assembly indicator.

[0058] For cost-effective manufacturing, the two angle plates 30 including the tabs 36, 37, the retaining elements 40 and the mounting indicator 45 are one-piece stamped and bent metal parts, wherein not only the tabs 36, 37, but also the mounting indicator 45 and preferably also the retaining elements 40 are tabs produced in a bending process.

[0059] The assembly indicator 45 is located on the outside of the radial leg 31. It is therefore located on the side of the radial leg 31 facing away from the contact surface 25, which, in the assembled state, is opposite the first support surface of the covering shaft 20.

[0060] In the exemplary embodiment, the mounting indicator 45 is designed as a tab or arm. To allow the free end of the arm, which extends in the main direction of extension of the radial leg 31, to engage in the structure 47, this end is connected to the edge 44 via a 180° arc.

[0061] The structure 47 of the brake carrier 2, which receives the mounting indicator 45, is a recess 47 in the brake carrier 2. The recess 47 is located outside the lining channel 20. In particular, it is located on the upper side of the brake carrier 2 facing away from the second support surfaces of the lining channel 20.

[0062] Preferably, the recess 47 is a blind hole open towards the second support surfaces. The width of the recess 47 is such that the mounting indicator 45 can be inserted into the recess 47 without making contact.

[0063] The retaining elements 40 are tabs or arms molded onto the angle brackets 30, which engage in recesses 50 on the back of the backing plate 9 by means of immersion. Preferably, each retaining element 40 is fixed in the respective recess 50 by means of a dowel 49, the dowel 49 being attached to the tab or arm. The dowel 49 is preferably made of plastic.

[0064] The recesses 50 are blind holes which are open facing away from the friction lining 8, so that the dowels 49 can be placed in them under frictional engagement.

[0065] The reverse side of the lining backing plate 9 has struts 51 to reduce weight. These struts extend radially from a strut-free central area 52 of the lining backing plate 9, against which the pressure element of the brake acts during application, to a frame-shaped reinforcing edge 55. The recesses 50 are located in the reinforcing edge 55 to save space.

[0066] The crucial aspect of the described solution is that, in the direction of travel R, the distance between the plane E of the mounting indicator 45 and the plane of the inner surface 16 on the one hand, and the plane of the outer surface 17 on the other, is different. This ensures that the mounting indicator 45 engages with the structure 47 on the brake carrier 2 only when the friction lining 8, and not when the lining backing plate 9, faces the brake disc. Even during the initial attempt to insert the brake pad 5, equipped with the angle brackets 30, into the pad recess 20, it is apparent whether the installation is in the correct position.

[0067] If the installation is incorrect, and especially if rotated by 180°, the positions of the mounting indicator 45 and the corresponding structure 47 on the brake carrier 2 do not correspond, since the mounting indicator 45 and the structure 47 on the brake carrier are then located on different planes. The brake pad 5, fitted with the plates 30, cannot then be fully lowered into the pad recess 20. This, in turn, means that a bracket extending transversely across the pad recess 20 cannot be closed as intended. At this point, it is clear that the brake pad 5 has not been inserted into the pad recess in the intended position.

[0068] In a second embodiment of the invention, not shown in the drawing, the mounting indicator is a dent formed transversely to the feed direction R in the radial leg 31 of the angle plate 30. The dent engages in an equally off-center groove extending in the feed direction R. The groove is located on the radially extending edge 9A of the backing plate 9 ( Fig. 4 ), with which the backing plate 9 is supported on the radial leg 31 when the braking forces are transferred.

[0069] In the exemplary embodiment, the mudguard arrangement comprises two separate angle plates 30, i.e., two separate base bodies. It is also possible to provide only a single plate, which combines the designs of the two angle plates 30 and whose one-piece base body then comprises both radial legs 31 and both tangential legs 32.

[0070] In a further embodiment of the invention, not shown in the drawing, the retaining element 40 is a pin or a short screw extending transversely to the feed direction R. The pin or screw can be made of plastic and remains intact until the brake pad is inserted into the mounting position, thus holding the respective metal plate 30 to the pad backing plate 9. Only when the unit consisting of the brake pad 5 and the metal plates 30 is inserted into the pad recess 20 does the pin or screw shear off at an edge of the pad recess. Reference symbol list

[0071] 1 Brake disc 2 Brake carrier 3 Brake caliper 5 Inner brake pad 6 Outer brake pad 8 Friction lining 9 Pad backing plate 9A Edge of pad backing plate 16 Inner 17 Outer 20 Pad recess 25 Contact surface 26 Inner edge 27 Outer edge 30 Sheet metal, angle plate 31 Radial leg 32 Tangential leg 34 Base section 35 Clamping section 36 Tab 37 Tab 40 Retaining element 44 Edge 45 Mounting indicator 47 Structure, recess 49 Dowel 50 Recess 51 Strut 52 Central area 55 Reinforcing edge A Axis of rotation of the brake disc E Plane R Direction of travel, braking direction

Claims

1. Disk brake comprising a brake carrier (2) which can be mounted on a vehicle axle and a brake caliper (3) which bridges brake linings (5, 6) arranged on the inner side and on the outer side of a brake disk (1), wherein the brake linings (5, 6) consist of a friction lining (8) facing the brake disk (1) and a lining rear plate (9), and a pressure element guided in the brake caliper (3) can be applied against the lining rear plate (9) of the inner brake lining (5), wherein the brake carrier (2), for receiving the inner brake lining (5), has a lining well (20) having two mutually facing first supporting surfaces for supporting the brake lining (5) in the circumferential direction and second supporting surfaces for supporting the brake lining (5) radially on the inside, and wherein the brake carrier (2) is planar with an inner side (16) and a parallel outer side (17), at least surrounding the lining well (20), wherein a plate (30) is arranged between the brake lining (5) and each first supporting surface, on which plate tabs (36, 37) are formed for fixing the plate in the application direction (R), of which an inner tab (36) is supported against the inner side (16) and an outer tab (37) is supported against the outer side (17), wherein at least one of the plates (30) is provided with a mounting indicator (45) which is situated in a plane (E) between the inner side (16) and the outer side (17), wherein the spacing of the plane (E) from the inner side (16) on one side and from the outer side (17) on the other side is different in the application direction (R), and wherein the brake carrier (2), in the same plane (E), is provided with a structure (47) in which the mounting indicator (45) engages, or which engages in the mounting indicator (45), characterized in that the brake lining (5) is inserted into the lining well (20) from above, i.e. with a mounting direction parallel to the inner side (16) of the brake disk (1), which inner side is a friction surface, the plates (30) are fixed to the lining rear plate (9) by means of retaining elements (40), so that, when the brake lining (5) with the plates (30) fixed thereon is inserted into the lining well (20), the tabs (36) come into contact with the inner side (16) and the other tabs (37) come into contact with the outer side (17) of the brake carrier (2), and the fixing force of the retaining elements (40) in the application direction (R) is smaller than the fixing force of the tabs (36) supported against the inner side (16).

2. Disk brake according to claim 1, characterized in that the plates (30) are angle plates, each of which rests with a radial limb (31) against the first supporting surface of the lining well (20), and with a tangential limb (32) against the second supporting surface of the lining well.

3. Disk brake according to claim 2, characterized in that further tabs (36, 37) are formed on the tangential limb (32), of which an inner tab (36) is supported against the inner side (16) and an outer tab (37) is supported against the outer side (17).

4. Disk brake according to claim 2 or claim 3, characterized in that the faces on which the plates (30) are in contact with the first and second supporting surfaces are arranged symmetrically with respect to the center of the lining well (20) in the circumferential direction.

5. Disk brake according to any of claims 2 to 4, characterized in that the inner and outer tabs (36, 37) formed on the radial limb (31) each consist of a base portion (34) connected to the radial limb (31) and a clamping portion (35) extending away from the base portion (34), wherein the spacings of the clamping portions (35) of the tabs (36, 37) from one another are smaller than the spacings of the base portions (34) of the tabs from one another.

6. Disk brake according to claim 5, characterized in that the clamping portions (35) extend away from the base portions (34) in the longitudinal direction of the relevant radial limb (31).

7. Disk brake according to any of claims 2 to 6, characterized in that the mounting indicator (45) is integrally formed on an edge (44) of the radial limb (31) facing away from the tangential limb (32).

8. Disk brake according to claim 7, characterized in that the mounting indicator (45) is connected to the edge (44) over a 180° arc and otherwise extends in parallel with the radial limb (31).

9. Disk brake according to any of the preceding claims, characterized in that the structure (47) with which the brake carrier (2) is provided is a recess (47) into which the mounting indicator (45) engages by insertion.

10. Disk brake according to claim 9, characterized in that the lining rear plate (9) has struts (51) on its rear face for weight reduction, which struts extend from a strut-free central region (52) to a frame-shaped reinforcing edge (55), and in that recesses (50) are located in the frame-shaped reinforcing edge (55), into which the retaining elements (40), which are arms integrally formed on the plates (30), engage by insertion.

11. Guard plate assembly for arrangement between a brake carrier of a disk brake and a brake lining guided therein in the brake application direction (R), comprising a one- or two-piece main body consisting of a total of two radial limbs (31) and two tangential limbs (32), of which the radial limbs (31) are provided with mutually facing contact surfaces (25) and the tangential limbs (32) are provided with mutually aligned contact surfaces for supporting and guiding the brake lining in the brake application direction (R), and the radial limbs (31) and tangential limbs (32) each extend in the brake application direction (R) from an inner edge (26) to an outer edge (27), comprising tabs (36, 37) on the inner edge and the outer edge (27), wherein tab (36) is formed on the inner edge (26) to provide support against an inner side of the brake carrier, and tab (37) is formed on the outer edge (27) to provide support against an outer side of the brake carrier, and comprising a mounting indicator (45) designed to engage in a structure of the brake carrier, which mounting indicator is formed on the radial limb (31) and is arranged in a plane (E) between the inner edge (26) and the outer edge, wherein the spacing of the plane (E) from the inner edge (26) on one side and from the outer edge (27) on the other side is different in the brake application direction (R), characterized by retaining elements (40) which are designed for fixing the main bodies to the brake lining, so that, when the brake lining (5) with the guard plate assembly fixed thereon is inserted into the lining well (20) from above, i.e. with a mounting direction parallel to the inner side (16) of the brake disk (1), which inner side is formed as a friction surface, the tabs (36) come into contact with an inner side (16) and the other tabs (37) come into contact with an outer side (17) of the brake carrier (2).

12. Guard plate assembly according to claim 11, characterized in that the mounting indicator (45) is integrally formed on an edge (44) of the radial limb (31) facing away from the tangential limb (32).

13. Guard plate assembly according to claim 11 or claim 12, characterized in that the mounting indicator (45) is situated on the side of the radial limb (31) facing away from the contact surface (25).

14. Guard plate assembly according to claim 13, characterized in that the mounting indicator (45) is connected to the edge (44) over a 180° arc and otherwise extends in parallel with the radial limb (31).

15. Guard plate assembly according to any of claims 11 to 14, characterized in that the inner and outer tabs (36, 37) formed on the radial limb (31) each consist of a base portion (34) connected to the radial limb (31) and a clamping portion (35) extending away from the base portion (34), wherein the spacings of the clamping portions (35) of the tabs (36, 37) from one another are smaller than the spacings of the base portions (34) of the tabs from one another.

16. Guard plate assembly according to claim 15, characterized in that the clamping portions (35) extend away from the base portions (34) in the longitudinal direction of the relevant radial limb (31).

17. Guard plate assembly according to any of claims 11 to 16, characterized in that the fixing force of the retaining elements (40) in the brake application direction (R) is smaller than the fixing force of the tabs (36) formed on the inner edge (26).

18. Brake lining (5,6) comprising a guard plate assembly fixed thereon according to any of claims 11 to 17.