Brake pad and disc brake

Abstract

The invention relates to a brake pad (10) for a vehicle brake, in particular a disc brake (14), and to a disc brake.

Description

Technical Field

[0001] The invention relates to a brake pad. The brake pad is used for a vehicle brake, in particular for a disc brake, and comprises a back plate and a friction lining arranged on the front side of the back plate, wherein the back plate has a first radial support surface located in a first radial plane for supporting a first radially opposite surface on a brake frame or a brake caliper. In addition, the back plate also has a second radial support surface located in a second radial plane for supporting a second radially opposite surface on the brake frame or the brake caliper. The first radial plane and the second radial plane are arranged to extend at least approximately parallel to each other, wherein the back plate has two tangential support surfaces, which are located in a common tangential plane for supporting tangentially opposite surfaces arranged on the brake frame or the brake caliper. In addition, the invention also relates to a disc brake. Background Art

[0002] DE 20 2005 005 798 U1 discloses a floating caliper disc brake, in particular for a utility vehicle, having a brake carrier, a brake disc, a brake caliper overlapping the brake disc, and a brake pad. The brake pad is inserted into a disc shaft from the outside in a radial direction, and the surfaces of the disc shaft are arranged at right angles to each other.

[0003] EP 3 027 926 B1 and DE 10 2013 012 547 B4 disclose U-shaped shafts for brake pads in disc brakes. The support portion is inclined according to a center plane to correspond to the back plate of the brake pad, thereby preventing confusion between the outer brake pad and the inner brake pad. However, this can only be achieved on one side of the disc brake, because the embodiment shown only allows the brake pad to be installed in the axial direction. Incorrect installation of the brake pad with the back plate relative to the brake disc cannot be prevented.

[0004] A disadvantage of the prior art is that even if the correct pad is selected, it may be installed with the back plate of the pad facing the brake disc.

[0005] JP 2008-196 683 A discloses a disc brake for a vehicle, in which brake pads are offset from each other in the rotational direction of the brake disc and additional wedge elements are arranged on their radial surfaces.

[0006] DE 1525385 A discloses a point-type disc brake, in particular for motor vehicles, having a brake shoe consisting of a brake pad with a backing plate. The brake shoe is supported so that the actuating device remains unloaded under the action of the braking force, thereby preventing the actuating device from getting stuck and bending.

[0007] DE 3109939 A1 discloses a friction shoe in which at least the inlet-side edge of the friction material block is inclined in the main rotation direction over at least a majority of its length relative to the main rotation direction.

[0008] US 2022 / 0163079 A1 discloses a brake pad for a disc brake having a brake disc that rotates about an axis, wherein the support surfaces of the brake pad and the disc carrier on the lower side are inclined toward or away from the brake disc.

[0009] EP 0 752 541 A1 proposes an asymmetrical design of the disc, including its back plate and guide surface, which is intended to prevent twisted installation of the disc. However, these designs are disadvantageous in production and, moreover, reduce the surface area of ​​the friction lining.

[0010] DE 20 2004 021 249 U1 discloses a disc brake having a brake pad with a recess for a corresponding projection in the brake caliper or the brake carrier. This is to prevent twisted mounting of the brake pad with the backing plate relative to the brake disc. However, the brake pad then has to be provided with a recess and an additional projection has to be formed on the brake caliper and / or the brake carrier in the relevant disc shaft. Summary of the invention

[0011] The object of the present invention is to provide a brake pad or a vehicle brake which has a high level of process reliability during assembly and which has a simplified structure compared to the prior art.

[0012] The object of the invention is achieved by a brake pad for a vehicle brake according to claim 1. The brake pad is characterized in that the tangential plane forms an acute angle with the first radial plane and an obtuse angle with the second radial plane.

[0013] The vehicle brake is a disc brake which comprises a pad holder for a brake pad and a brake disc arranged around a central axis of the brake.

[0014] Support surfaces of the brake pad according to claim 1 are to be understood as those surfaces of the brake pad which transmit braking forces and moments to corresponding support surfaces or counter-surfaces of the brake carrier or brake caliper during a braking process.

[0015] The brake pad center plane is located centrally between the first radial plane and the second radial plane and passes through the brake center axis when the brake pad is inserted into the pad retainer.

[0016] The advantage of the present invention is that when the brake pad is installed in the pad holder of the brake caliper or the brake carrier, the friction lining always points in the direction of the brake disc, so that correct installation is always guaranteed. Due to the arrangement of the tangential plane and the first radial plane and the second radial plane, the brake pad can only be inserted in the correct way, because a distorted brake pad protrudes from the brake caliper or the brake carrier, making it impossible to attach with the brake pad, in particular with the clamping device, or even the wheel is blocked by the protruding brake pad. In contrast, a correctly inserted brake pad does not protrude from the brake carrier or the brake caliper, or protrudes only to the expected extent, can be firmly attached and thus ensures that the disc brake works properly. In other words, even in poor light and visibility conditions, a mechanic who installs the brake pad according to the present invention in the disc brake can immediately see whether the brake pad has been correctly inserted and can correct the installation position of the brake pad if necessary. Therefore, the assembly and functional reliability of the disc brake can be improved by the brake pad according to the present invention.

[0017] Another advantage of the invention is that additional machining steps and complex shaping of the brake pad and / or back plate can be omitted during the manufacturing process. No recesses or machine surfaces need to be created that are offset from one another. In particular, the machining of the tangential support surfaces is simplified.

[0018] The brake pad according to the invention provides another advantage, since the first radial support surface can be made larger than the second radial support surface and thus the surface pressure caused by the circumferential force in the tangential direction between the brake disc and the pad on the first radial support surface during braking can be reduced.

[0019] Advantageously, the acute angle is in the range of 84° to 89°, preferably 86° to 88°, more preferably 87° to 88°, and the obtuse angle is in the range of 91° to 100°, preferably 91° to 95°, wherein the sum of the degrees of the acute angle and the obtuse angle is equal to or almost 180°.

[0020] Within these angle ranges, sufficient protrusion of the brake pad can be achieved in the case of twisted installation.

[0021] It is conceivable that a first radial length of the first radial support surface is longer than a second radial length of the second radial support surface. This allows the outer contour of the upper tangential surface of the brake pad to be adapted to the outer peripheral contour of the brake disc.

[0022] Advantageously, the outer contour of the friction lining extends in a section parallel to the outer contour of the back plate. This makes the effective area of ​​the friction lining on the brake disc as large as possible and ensures a safe braking effect. However, in the area where the back plate extends further than the friction surface of the brake disc, the friction lining is omitted to ensure a safe braking process with optimal material utilization.

[0023] It is conceivable that the outer contour of the friction lining is parallel to the outer contour of the back plate in the region of the tangential support surface. This increases the effective area of ​​the friction lining and ensures safe braking.

[0024] Advantageously, the entire outer contour of the friction lining is parallel to the outer contour of the backing plate. In this case, the effective area is maximized. The outer contours are therefore similar to each other, which simplifies the production of the brake pad.

[0025] It is conceivable to provide only at least one tangential surface lying in a tangential plane, wherein the tangential surface lies in a projection onto the backing plate. It is also conceivable that the radial support surface is limited in the radially outer direction by a tangential limiting plane, wherein the tangential plane is located radially further outwards than the limiting plane or lies in the region of the limiting plane.

[0026] The object of the present invention is also achieved by a disc brake for a vehicle axle according to claim 6. The disc brake comprises at least one brake disc for being arranged on a wheel hub, a brake frame for being fixedly arranged on an axle body, and a brake caliper that can be arranged on the brake frame and overlaps with the brake disc. The brake disc, the wheel hub and the axle body are arranged around a brake center axis. The brake frame and / or the brake caliper have at least one pad holder. The pad holder has a first radially opposite surface located in a first radial plane for supporting a first radial support surface of the brake pad. The pad holder has a second radially opposite surface located in a second radial plane for supporting a second radial support surface of the brake pad. The first radial plane and the second radial plane are arranged to extend at least approximately parallel to each other. The brake center plane is located at the center between the first radial plane and the second radial plane and extends through the brake center axis. When the brake pad is inserted into the pad holder, the brake pad center plane coincides with the brake center plane. The pad holder also has at least one tangential support surface located in a tangential plane for supporting at least one tangential support surface provided on the brake pad. The tangential plane is arranged to form an acute angle with the first radial plane and an obtuse angle with the second radial plane.

[0027] As described above for the brake pad according to the invention, an advantage of the invention is that when the brake pad is installed in the pad holder of a brake caliper or brake carrier, the friction lining always points in the direction of the brake disc, thus always ensuring correct installation.

[0028] Advantageously, at least one brake pad having at least one radial support surface and at least one tangential support surface is arranged in the pad holder, wherein radially and tangentially opposing surfaces of the pad holder, i.e. the brake caliper and / or the brake frame, are designed to correspond to the radial and tangential support surfaces of the brake pad.

[0029] This has the advantage that if a brake pad designed to correspond to the tangentially and radially opposite surfaces is inserted into a disc brake, whereby the back plate and / or friction lining of the brake pad are designed to correspond thereto, the mounting of the back plate relative to the brake disc can be immediately identified without the need for testing, even in poor light and / or visibility conditions. A brake pad inserted in the wrong way will protrude from the disc brake and prevent further assembly of the disc brake, such as the mounting of a hold-down device, until the incorrect mounting position of the brake pad is corrected. Due to the acute and obtuse angles, the brake pad can only have one mounting position relative to the axial arrangement of the friction lining relative to the brake disc and the back plate away from the brake disc. The brake pad is preferably inserted from the outside in the radial direction into a shaft in the brake carrier and / or the brake caliper, which preferably forms a pad holder. Inserting the brake pad preferably does not require the removal of the brake caliper and / or the brake carrier.

[0030] Advantageously, the acute angle ranges from 84° to 89°, preferably from 86° to 88°, more preferably from 87° to 88°, and the obtuse angle ranges from 91° to 100°, preferably from 91° to 95°, wherein the sum of the degrees of the acute angle and the obtuse angle is 180°.

[0031] It is conceivable that radially and tangentially opposing surfaces on the brake carrier and / or the brake caliper are designed to correspond to the supporting surfaces of the back plate of the brake pad according to the invention. By at least approximately matching the angles and geometries of the disc brake according to the invention and the brake pad according to the invention, a particularly high level of process reliability during assembly and a high level of safety during braking can be ensured with simple production.

[0032] It is conceivable that the disc brake according to the invention comprises two brake pads according to the invention, the brake pads having an inner brake pad and an outer brake pad, wherein the inner brake pad and the outer brake pad are of identical design. This has the advantage that more identical parts can be used in the disc brake. It is also conceivable that the inner brake pad and the outer brake pad are of different design. This can advantageously prevent distortion and / or incorrect installation of the brake pads.

[0033] Advantageously, the first radial plane, the second radial plane and the tangential plane of the disc brake according to the invention form a disc holder, wherein a first disc holder and a second disc holder are provided, each disc holder having a first radial plane, a second radial plane and a tangential plane. The plane of the first disc holder may be different from the plane of the second disc holder. The first disc holder is arranged inside the vehicle and can be arranged on the brake carrier and / or the brake caliper. The second disc holder is arranged outside the vehicle and can be arranged on the brake carrier and / or the brake caliper.

[0034] Further details and advantageous designs of the invention can be found in the following description, on the basis of which embodiments of the invention are described and explained in more detail. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In the figure: Figure 1 A brake pad inserted into a disc brake is shown; Figure 2 Shows Figure 1 The brake pads are incorrectly inserted into the disc brake; and Figure 3 yes Figure 1 Detailed view of the . DETAILED DESCRIPTION

[0036] Figure 1 and Figure 2 The brake pad 10 is shown arranged in the pad holder 12 of the disc brake 14. The disc brake 14 comprises a brake carrier 16 and a brake caliper 16b overlapping a brake disc 18. The pad holder 12 shown here can be in both the brake carrier 16 and the brake caliper 16b. The brake disc 18 is arranged on the wheel hub RN. The brake carrier 16 is fixedly arranged on the axle body AK. The brake carrier 16 is used to accommodate the brake pad 10 and to arrange the brake caliper 16b thereon. Figure 3 5 show a disc brake of the type in question, with the brake pad also being arranged in a pad holder.

[0037] The brake pad 10 includes a back plate 20 and a friction lining 22 disposed thereon and slightly rearward from the back plate 20. The friction lining 22 is Figure 1 and Figure 3 The outer contour 30 is shown in dashed lines in FIG. 2 because the friction lining 20 is located behind the back plate 22 in the plane of the drawing. Figure 2 In the figure, the structure of the friction lining 20 is clearly visible. Furthermore, a lining groove N is shown in the center of the friction lining 22 of the brake pad 10. The brake disk 18 is represented by a part of a friction ring 18a, which interacts with the friction lining 22 of the brake pad 10 and is located behind the brake pad 10 in the plane of the figure, as are the axle body AK and the wheel hub RN.

[0038] The back plate 20 has a first radial support surface 24 located in a first radial plane 24a and a second radial cross-sectional surface 26 located in a second radial plane 26a. The first radial plane 24a and the second radial plane 26a are at least substantially parallel to each other. A brake pad center plane M extends between the first radial plane 24a and the second radial plane 26a, and the distance C between the two planes 24a, 26a is at least substantially the same. Therefore, the brake pad center plane M is located at the center between the first radial plane 24a and the second radial plane 26a. The lining groove N also extends along the brake pad center plane M. The brake pad center plane M is spanned by the brake center axis A and the orthogonal line on the brake center axis A, which extends centrally between the two planes 24a, 26a or the planes 34a, 36a. The tangent T is applied to the brake disc 18 and extends perpendicular to the brake pad center plane M.

[0039] Furthermore, the back plate 20 has a first tangential support surface 28.1 and a second tangential section surface 28.2 located in a common tangential plane 28a. The planes 24a, 26a, 28a of the brake pad 10 are arranged so that the first radial plane 24a forms an acute angle α with the tangential plane 28a and the second radial plane 24a forms an obtuse angle β with the tangential plane 28a. The acute angle α ranges from 84° to 89°, preferably from 86° to 88°, more preferably from 87° to 88°. The obtuse angle β ranges from 91° to 100°, preferably from 91° to 95°. The sum of the degrees of the acute angle α and the obtuse angle β is 180°.

[0040] The cross section of the outer contour 30 of the friction lining 22 is parallel to the outer contour 32 of the back plate 20, thereby optimizing the effective area of ​​the friction lining. The outer contour 30 follows the shape of the friction ring of the brake disk 18 in order to achieve a good effect between the friction lining 22 and the brake disk 18 during braking. Since the brake pad 10 with the outer contour 30 of the friction lining 22 and / or with the outer contour 32 of the back plate 20 follows the contour of the brake disk 18 when inserted into the pad holder 12, the plane M also intersects the parallel line of the tangent line T at right angles.

[0041] The pad holder 12 shown is formed by the brake carrier 16 and serves to hold the brake pad 10. The pad holder 12 is arranged on the inner side of the disc brake 14 along the brake center axis A towards the vehicle interior. The brake pad 10 is inserted in a radial direction R for installation in the disc brake 14 and is removed from the pad holder 12 in a direction opposite to the direction R for removal; the radial direction R is at least approximately parallel to the brake pad center plane M. A further pad holder for a second brake pad 10 on the outer side along the axis A towards the outer side of the vehicle can be formed by the brake caliper and / or the brake carrier 16 (not shown).

[0042] The disc holder 12 comprises a first radially opposed surface 34 located in a first radial plane 34a, a second radially opposed surface 36 located in a second radial plane 36a, and a tangentially opposed surface 38 located in a tangential plane 38a. The brake center plane M1 is located at the center between the first radial plane 34a and the second radial plane 36a. The tangentially opposed surface 38 can also be divided into two tangentially opposed surfaces, however, the two tangentially opposed surfaces are located in the same tangential plane 38 (not shown). The radial planes 34a, 36a are arranged at least substantially parallel to each other and extend at least substantially the same distance D from the brake center plane M1.

[0043] exist Figure 1 The planes 34a, 36a, 38a of the brake carrier 16 and / or the pad holder of the brake caliper are arranged such that the first radial plane 34a forms an acute angle γ with the tangential plane 38a and the second radial plane 24a forms an obtuse angle φ with the tangential plane 28a.

[0044] The acute angle γ is in the range of 84° to 89°, preferably 86° to 88°, more preferably 87° to 88°. The obtuse angle φ is in the range of 91° to 100°, preferably 91° to 95°. The sum of the degrees of the acute angle γ and the obtuse angle φ is 180°. The acute angles α and γ are preferably equal or in similar angle ranges. Figure 3 Detailed expressions of acute angles α, γ are shown in FIG. If angles α, γ are different, angle γ is greater than angle α to ensure that the brake pad 10 is inserted into the pad holder 12. Obtuse angles β, φ are preferably equal or within a similar angular range. If angles β, φ are different, angle φ is greater than angle β to ensure that the brake pad 10 is inserted into the pad holder 12.

[0045] Figure 1 It is shown how the brake pad 10 is inserted into the pad holder 12 in the correct manner with the friction lining 22 facing the brake disc 18. This can be seen from the fact that the brake pad 10 is radially flush with the brake carrier 16 and / or the brake caliper in the direction R. The brake pad center plane M and the brake center plane M1 are at least approximately coincident. It is also conceivable that the brake pad 10 corresponds radially to the brake carrier 16 and / or the brake caliper in the direction R. It can also be seen that the outer contour 30 of the friction lining 22 extends parallel to the outer contour of the friction ring 18a of the brake disc 18 on the radial side. It is also conceivable that the outer contour 30 corresponds to the contour of the friction ring 18a of the brake disc 18 at a certain radial distance. The acute angle α of the brake pad 10 is arranged on the acute angle γ of the pad holder 12, and the obtuse angle β of the brake pad 10 is arranged on the obtuse angle φ of the pad holder 12.

[0046] exist Figure 2, the brake pad 10 is shown inserted into the pad holder 12 in an incorrect manner with the friction lining 22 pointing away from the brake disc, but the brake pad center plane M and the brake center plane M1 at least approximately coincide. The acute angle α of the brake pad 10 is arranged above the obtuse angle φ of the pad holder 12, and the obtuse angle β of the brake pad 10 is arranged above the acute angle γ of the pad holder 12. The radial projection B from the pad holder 12 of the brake carrier 16 in the direction R of the brake pad 10 is clearly visible.

[0047] During assembly, if the brake pad 10 has been inserted in the wrong way, the mechanic can directly detect the protrusion B and correct the installation position of the brake pad 10. The height of the protrusion B of the incorrectly inserted brake pad 10 is caused by the degrees of the angles α, β, φ, γ and the length L of the brake pad 10 in the tangential direction. The brake pad center plane M is located at the center of the length L. Figure 1-Figure 3 In the embodiment shown, the right corner 40 of the back plate 20 of the brake pad 10 is recessed, which is why the projection B is smaller. The recess of the corner 40 could also be omitted, which would result in a larger projection B in the event of incorrect installation.

[0048] The process reliability during assembly of the disc brake and the safety during operation are improved by the brake pad 10 and the disc brake 14 having the surfaces 2426, 28.2, 28.1, 34, 26, 38 arranged in the planes 2426a, 28a, 34a, 26a, 38a. Ideally, the projection B is selected to be so large that a component for fixing the brake pad 10 in the pad holder 12 cannot be mounted.

[0049] List of reference numerals: 10 Brake pads 12-piece holder 14 Disc brakes 16 Brake rack 16b Brake caliper AK Axis RN Wheels 18 Brake disc 20 Back Panel 22 Friction lining N Lining slot M Brake pad center plane M1 Brake center plane 24 First radial support surface 24a First radial plane 26 Second radial support surface 26a Second radial plane 28.1 First tangential support surface 28.2 Second tangential support surface 28a Tangential plane α Acute angle β Obtuse angle φ Acute angle γ Obtuse angle 30 Outer contour of friction lining 32 Outer contour of back panel A Brake center axis 34 first radially opposite surface 34a First radial plane 36 second radially opposite surface 36a Second radial plane R Radial direction 38 Tangentially opposite surfaces 38a Tangential plane 40 Brake pad angle C Distance between the radial plane of the brake pad and the center plane of the brake pad D Distance between the radial plane of the disc holder and the center plane of the brake L Brake pad length

Claims

1. A brake pad (10) for a vehicle brake, in particular a disc brake (14), comprising a pad holder (12) for the brake pad (10) and a brake disc (18) arranged around a brake center axis (A) and having a back plate (20) and a friction lining (22) arranged on the back plate (20), in, The backing plate (20) has a first radial support surface (24) located in a first radial plane (24a) for supporting a first radially opposing surface (34) on the sheet holder (12), wherein the back plate (20) has a second radial support surface (26) located in a second radial plane (26a) for supporting a second radially opposing surface (36) on the sheet holder (12), wherein the first radial plane (24a) and the second radial plane (26a) are arranged to extend at least approximately parallel to each other, wherein, when the brake pad (10) is inserted into the pad holder (12), a brake pad center plane (M) located centrally between the first radial plane (24a) and the second radial plane (26a) passes through the brake center axis (A), and The back plate (20) has two tangential support surfaces (28.1, 28.2) located in a common tangential plane for supporting a tangentially opposed surface (38) arranged on a brake frame (16) or a brake caliper. It is characterized in that The tangential plane (28a) forms an acute angle (α) with the first radial plane (24a) and an obtuse angle (β) with the second radial plane (26a).

2. The brake pad (10) according to claim 1, characterized in that The acute angle (α) is in the range of 84°-89°, preferably 86°-88°, more preferably 87°-88°, the obtuse angle (β) is in the range of 91°-100°, preferably 91°-95°, and the sum of the acute angle (α) and the obtuse angle (β) is equal to or close to 180°.

3. Brake pad (10) according to any one of the preceding claims, characterized in that The outer contour (30) of the friction lining (22) extends in a section parallel to the outer contour (32) of the back plate (20).

4. The brake pad (10) according to claim 3, characterized in that In the region of the tangential support surface, the outer contour (30) of the friction lining (22) is parallel to the outer contour (32) of the back plate (20).

5. Brake pad (10) according to any one of the preceding claims, characterized in that The entire outer contour (30) of the friction lining (22) is parallel to the outer contour (32) of the back plate (20).

6. A disc brake (14) for an axle, comprising at least one brake disc (18) for being arranged on a wheel hub (RN); A brake frame (16) can be fixedly arranged on an axle body (AK), wherein: The brake disc (18), the wheel hub (RN) and the shaft body (AK) are arranged around a brake center axis (A); as well as a brake caliper (16b), which can be arranged on the brake carrier (16) and overlaps the brake disk (18), The brake carrier (16) and / or the brake caliper (16b) has at least one plate holder (12). wherein the pad retainer (12) has a first radially opposed surface (34) located in a first radial plane (34a) for supporting a first radial support surface (24) of the brake pad (10), wherein the plate retainer (12) has a second radially opposed surface (36) located in a second radial plane (36a) for supporting a second radial support surface (26) of the brake plate (10) in the plate retainer (12), wherein the first radial plane (34a) and the second radial plane (36a) are arranged at least substantially parallel to each other, wherein a brake center plane (M1) located centrally between the first radial plane (34a) and the second radial plane (36a) passes through the brake center axis (A), and when the brake pad (10) is inserted into the pad holder (12), the brake pad center plane (M) coincides with the brake center plane (M1), and wherein the pad holder (12) has at least one tangential support surface (38) located in a tangential plane (38a) for supporting at least one tangential support surface (28.1, 28.1) provided on the brake pad (10), It is characterized in that The tangential plane (38) forms an acute angle (γ) with the first radial plane (34a) and an obtuse angle (φ) with the second radial plane (36a).

7. The disc brake (14) according to claim 6, characterized in that The acute angle (γ) is in the range of 84°-89°, preferably 86°-88°, more preferably 87°-88°, the obtuse angle (φ) is in the range of 91°-100°, preferably 91°-95°, and the sum of the acute angle (γ) and the obtuse angle (φ) is equal to or close to 180°.

8. The disc brake (14) according to claim 6 or 7, characterized in that At least one brake pad (10) is arranged in the pad holder (12), the at least one brake pad (10) having at least one radial support surface (24, 26) and at least one tangential support surface (28.1, 28.2), wherein the radially opposing surface and the tangentially opposing surface (34, 36, 38) of the pad holder (12) are designed to correspond to the radially opposing surface and the tangentially opposing surface (24, 26, 28.1, 28.2) of the brake pad (10).

9. The disc brake (14) according to any one of claims 6 to 8, characterized in that: The radially opposing surfaces and tangentially opposing surfaces (34, 36, 38) of the pad holder (12) are designed to correspond to the supporting surfaces (24, 26, 28.1, 28.2) of the back plate (20) of the brake pad (10) according to any one of claims 1-6.

10. The disc brake (14) according to any one of claims 6 to 9, comprising at least one brake pad (10) according to any one of claims 1 to 6, wherein: When the brake pad (10) is inserted into the pad holder (12) in a wrong manner with the friction lining (22) away from the brake disc (18), the brake pad (10) protrudes from the pad holder (12) with a radial protrusion (B) in a direction (R) parallel to the brake center plane (M1).

11. The disc brake (14) according to claim 10, comprising at least one brake pad (10) according to any one of claims 1 to 6, wherein: The protrusion (B) is configured to be so large that a component for fixing the brake pad (10) in the pad holder (12) cannot be mounted.

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