Disc brake and brake pad mechanism for vehicle braking system

Abstract

The invention relates to a disc brake (1000) and a brake pad arrangement (200, 202) for a vehicle brake system, the brake pad arrangement having at least one brake pad carrier plate (204, 208) and at least one friction lining (206, 210), the at least one friction lining being attached to the at least one brake pad carrier plate (204, 208), wherein the brake pad carrier plate (204, 208) has at least one fastening section (212, 214, 216, 217). 8), the at least one fastening section being configured for fastening a brake pad reset device (300, 302), wherein the fastening section (212, 214, 216, 218) has at least one bearing surface (220, 222, 224, 226) for the brake pad reset device (300, 302), wherein the at least one bearing surface (222, 224, 226, 228) extends obliquely relative to a longitudinal axis (L) of the brake pad carrier plate (204, 208).

Description

[0001] The invention relates to a brake pad arrangement for a disc brake of a vehicle brake system. In addition, the invention relates to a disc brake having such a brake pad arrangement.

[0002] Brake pad arrangements are known from the prior art, for example from German published application WO 2016 / 141135 A1. Brake pad arrangements generally comprise a brake pad carrier plate and a friction pad attached thereto.

[0003] It is an object of the present invention to provide a brake pad arrangement by means of which undesirable noises during vehicle operation can be better suppressed.

[0004] According to the invention, this object is achieved by a brake pad arrangement.

[0005] The brake pad arrangement according to the invention for a disc brake of a vehicle brake system comprises at least one brake pad carrier plate and a friction pad attached to the brake pad carrier plate. The brake pad carrier plate has at least one fastening section, which is designed for fastening a brake pad reset device. The fastening section has at least one bearing surface for the brake pad reset device. At least one bearing surface extends obliquely with respect to the longitudinal axis of the brake pad carrier plate. The longitudinal axis extends in the plane of the brake carrier plate, in a direction at right angles to the axis of rotation of the brake disc, in the projection of the axis of rotation of the brake disc onto the plane.

[0006] By means of at least one fastening section and its at least one bearing surface extending obliquely relative to the longitudinal axis of the brake pad carrier plate, the brake pad mechanism can be positioned in a predetermined position or predetermined orientation in the brake caliper. In this predetermined position and / or predetermined orientation, in certain operating situations of the vehicle, the brake pad mechanism can be prevented from striking the brake caliper. Furthermore, rattling noises which occur on uneven road surfaces or in the case of potholes can also be prevented by means of a brake pad mechanism of this type.

[0007] The at least one bearing surface may extend at least approximately at right angles to the face of the brake pad carrier plate to which the friction pad is attached. The at least one bearing surface may extend between the face of the friction pad and the back face or back side of the brake pad carrier plate. The at least one bearing surface may also extend at right angles to the back face of the brake pad carrier plate. The at least one bearing surface may form a contoured edge of the brake pad carrier plate. The at least one bearing surface may abut the contoured edge of the brake pad carrier plate, or alternatively, may only form a portion of the contoured edge of the brake pad carrier plate.

[0008] The at least one bearing surface may extend at a predetermined angle relative to the longitudinal axis of the brake pad carrier plate. The predetermined angle may be an acute angle. The predetermined angle may be between 10° and 80°. The predetermined angle may preferably be between 15° and 45°. In particular, the predetermined angle may be 30°. The specified angle value may refer to the minimum angle between the at least one bearing surface and the longitudinal axis of the brake pad carrier plate.

[0009] The brake pad carrier plate may have a first fastening section and a second fastening section. The first fastening section and the second fastening section may each have a bearing surface, which extends obliquely relative to the longitudinal axis of the brake pad carrier plate. The two fastening sections may be formed on the brake pad carrier plate in such a way that the longitudinal axis of the brake pad carrier plate is offset relative to each other. Each bearing surface may extend obliquely at a predetermined angle relative to the longitudinal axis of the brake pad carrier plate. The absolute values ​​of the two angles may be the same or different.

[0010] The bearing surface of the first fastening section and the bearing surface of the second fastening section can extend substantially parallel to one another.The bearing surfaces of the two fastening sections can therefore extend parallel to one another and in each case extend obliquely relative to the longitudinal axis of the brake pad carrier plate.

[0011] The bearing surface of the first fastening section and the bearing surface of the second fastening section may be inclined in opposite directions. In other words, the openings of the two corners may face each other. The absolute value of the angle enclosed by the bearing surface of the first fastening section and the longitudinal axis of the brake pad carrier plate may be the same as the absolute value of the angle enclosed by the bearing surface of the second fastening section and the longitudinal axis of the brake pad carrier plate.

[0012] The brake pad carrier plate may have at least one elongated opening, which is designed to receive a retaining element for the brake pad mechanism. For example, the at least one retaining element may be a retaining bolt or a retaining pin. The at least one retaining element may extend through the at least one elongated opening. The elongated opening may have a substantially rectangular design. The rectangular shape of the elongated opening may have rounded corners. The at least one elongated opening may be associated with at least one fastening section. The at least one elongated opening may extend between a bearing surface of the fastening section associated with the elongated opening and at least one friction pad in a direction transverse to the longitudinal axis. The at least one elongated opening may have at least one edge, the length of which defines the maximum range of the elongated opening. The at least one elongated opening preferably has at least two edges, which extend substantially parallel to each other and whose lengths define the maximum range of the elongated opening. The at least two edges extending substantially parallel to each other preferably have the same size.

[0013] At least one elongated opening may extend at least approximately parallel to the brake pad carrier plate longitudinal axis. In this case, at least one edge whose length defines the maximum extent of the elongated opening may extend parallel to the brake pad carrier plate longitudinal axis.

[0014] Alternatively, at least one elongated opening may extend obliquely relative to the longitudinal axis of the brake pad carrier plate. At least at least one edge defining the maximum extent of the elongated opening may extend at a predetermined angle relative to the longitudinal axis of the brake pad carrier plate. The elongated opening preferably has two edges, whose lengths define the maximum extent of the elongated opening and which extend at the same predetermined angle relative to the longitudinal axis of the brake pad carrier plate. For example, at least one elongated opening may extend at an angle of 30° to the longitudinal axis of the brake pad carrier plate. In particular, the edge whose length defines the maximum extent of the elongated opening may extend at an angle of 30° to the longitudinal axis of the brake pad carrier plate.

[0015] The at least one elongated opening may extend parallel to the at least one bearing surface of the at least one fastening section. In this case, the elongated opening may extend obliquely with respect to the longitudinal axis of the brake pad carrier plate. Two at least approximately parallel edges of the elongated opening may extend parallel to the bearing surface of the at least one fastening section and obliquely with respect to the longitudinal axis of the brake pad carrier plate.

[0016] At least one fastening section may be in the form of a protrusion on the contour edge of the brake pad carrier plate. The contour edge may extend at least approximately parallel to the longitudinal axis of the brake pad carrier plate. At least one fastening section may protrude from the contour edge of the brake pad carrier plate in a direction transverse to the longitudinal axis of the brake pad carrier plate. At least one fastening section may at least partially overlap the extent of the friction pad along the longitudinal axis of the brake pad carrier plate. Thus, at least one fastening section may be formed above the friction pad in a direction transverse to the longitudinal axis of the brake pad carrier plate.

[0017] The invention also relates to a disc brake having a first brake pad mechanism and a second brake pad mechanism of the above-described type and having a brake caliper. The disc brake also comprises at least one retaining element on which the first brake pad mechanism and the second brake pad mechanism are suspended, and at least one brake pad resetting device, wherein the at least one brake pad resetting device is attached to the at least one retaining element and in each case to a fastening section of the first brake pad mechanism and the second brake pad mechanism and preloads the brake pad mechanism into its initial position.

[0018] By means of the oblique alignment of the bearing surface on at least one fastening section for the brake pad reset device, the brake pad mechanism can be preloaded into a predetermined position and / or a predetermined orientation by means of a preload force provided by the brake pad reset device. The oblique alignment of the bearing surface results in the preload force provided by the brake pad reset device being divided into a force component acting approximately in the direction of the longitudinal axis of the brake pad carrier plate and a force component acting transversely to the longitudinal axis of the brake pad carrier plate. In the state in which the brake pad mechanism is installed in the vehicle, the force component acting in the longitudinal direction of the brake pad carrier plate acts in a tangential direction relative to the wheel axle. In the state in which the brake pad mechanism is installed in the vehicle, the force component acting transversely to the longitudinal axis of the brake pad carrier plate acts in a radial direction relative to the wheel axle. By means of the force component generated by the oblique alignment of the bearing surface of at least one fastening section, the brake pad mechanism can be preloaded into a predetermined position and / or a predetermined orientation in the brake caliper. In particular, depending on the slope or inclination of the bearing surface, tangential force components acting in the same direction or in opposite directions can be generated. Depending on the slope or inclination of the bearing surface, the brake pad mechanism may assume different positions or orientations at the brake caliper.

[0019] The brake pad mechanism can be preloaded to a position in which the brake pad mechanism is supported by a portion of a brake pad carrier plate on the brake caliper. Alternatively, the brake pad mechanism can be preloaded to a position in which it is located in the center of the receiving opening of the brake caliper. In this case, a predetermined spacing can be established between the brake pad mechanism and the section of the brake caliper surrounding the receiving opening. By both the contact of the brake pad mechanism with the brake caliper and the central position of the brake pad mechanism in the receiving opening of the brake caliper, undesirable noise phenomena, such as rattling during driving, can be avoided. By both solutions, impact noises due to the impact of the brake pad mechanism on the brake caliper during a change of driving direction (i.e. when changing from forward driving to reverse driving or vice versa) can also be prevented. These impact noises can be suppressed or attenuated, in particular by a force component acting in the tangential direction.

[0020] The brake pad reset device may include a first reset unit for a first brake pad mechanism, the first reset unit being designed to receive a fastening section of a brake pad carrier plate of the first brake pad mechanism and exert a reset force on the first brake pad mechanism, and a second reset unit being designed to receive a fastening section of a brake pad carrier plate of the second brake pad mechanism and exert a reset force on the second brake pad mechanism. The brake pad reset device may also have a fastening device for attaching the brake pad reset device to a retaining element of the disc brake. The fastening device may be connected to the first reset unit via a first arm and to the second reset unit via a second arm.

[0021] By means of the brake pad resetting device, the brake pad mechanism of the disc brake can be preloaded into an initial position, which the brake pad mechanism occupies when the brake is not actuated. For this purpose, the first resetting unit and the second resetting unit can act on the fastening sections of the brake pad carrier plates of the first brake pad mechanism and the second brake pad mechanism and exert a resetting force on the brake pad mechanism.

[0022] The first arm and the second arm may extend between the fastening device and the first and second reset units in such a way that the first and second reset units may be preloaded into an initial position by the fastening device. The brake pad reset device may be preloaded by movement of the fastening device, wherein the movement of the fastening device is transmitted to the first and second reset units via the first and second arms. By way of example, the fastening device of the brake pad reset device may be moved during installation so that the brake pad reset device can be fastened to the brake disc and the reset unit is preloaded. The arm transmits this movement of the fastening device to the reset unit so that the reset unit is moved and preloaded into its initial position. As a result, the brake pad mechanism coupled to the reset unit is also preloaded into its initial position.

[0023] The first arm and the second arm may extend at a predetermined angle relative to each other. The first arm and the second arm may extend at a predetermined angle relative to each other, in particular in a relaxed and unmounted state of the brake pad return device. The predetermined angle is preferably not equal to zero.

[0024] By means of the movement of the fastening device, the brake pad reset device can be switched from a relaxed state to a preloaded state. The movement of the fastening device causes a change in the angle between the first arm and the second arm. Since the movement of the fastening device is transmitted to the reset unit via the arms, the reset unit is moved to its initial position and preloaded at the same time. For example, the direction of the movement of the fastening device can be at right angles to the direction of movement of the reset unit, which is caused by the movement of the fastening device.

[0025] The fastening device may form a middle or central section of the brake pad reset device. The first reset unit may be arranged at one end of the first arm. The second reset unit may be arranged at one end of the second arm. The other end of each arm may be connected to the fastening device.

[0026] The fastening device can have at least one fastening projection, which is provided with at least one latching nose. The fastening device preferably has two fastening projections, each of which has at least one latching nose. The latching nose is present at the end of a fastening projection and is bent in the direction of the respective other fastening projection. The two fastening projections enclose a receiving space between them, in which a section or an element of the disc brake can be received in order to retain the brake pad return device on the disc brake.

[0027] The first reset unit and the second reset unit can each have a spring section and a receiving section, which is used to receive a part of the brake pad carrier plate of the first brake pad mechanism or the second brake pad mechanism. The spring sections of the first reset unit and the second reset unit can each be connected to the first arm or the second arm. The spring section can extend in a loop between the arm associated therewith and the receiving section of the reset unit. In this case, the spring section can extend in the loop in such a way that the receiving section is arranged between the spring section and the fastening device. In other words, the receiving section of the first reset unit and the second reset unit can be arranged between the two spring sections and / or below the two arms.

[0028] The receiving sections of the first and second resetting units can have an approximately U-shaped design. In other words, the receiving sections of the first and second resetting devices can have at least two approximately parallel sections, which are connected to each other by sections extending transversely to the sections. At least one holding element can be formed on one parallel section, and the at least one holding element can extend obliquely away from one parallel section. The holding element preferably extends obliquely from the parallel section in the direction of the transversely extending section. Starting from the transversely extending section, the guide section can extend away from the receiving section. In the relaxed state of the brake pad resetting device, the guide section can extend obliquely to the transversely extending section and parallel to one of the two arms.

[0029] The spring section may have at least one opening, wherein the at least one opening is used to set the stiffness of the spring section. The spring section may also have two or more openings. By means of the at least one opening, a deformation limit may be set, at which the elastic deformation of the spring section becomes a plastic deformation. By means of the plastic deformation of the spring section, the initial position of the brake pad mechanism set by the reset unit may be readjusted to compensate for the wear of the brake pad. When the brake pad of the brake pad mechanism contacts the brake disc to perform a braking operation, the greater the wear of the brake pad, the greater the deformation of the spring section. By means of the readjustment of the initial position caused by the plastic deformation of the spring section, the brake pad mechanism returns to the initial position after the braking operation, and the reset force generated by the spring section may be kept substantially constant.

[0030] The first arm and / or the second arm may each have at least one bead. The at least one bead serves to increase the stiffness of the two arms. The high stiffness of the arms makes it possible to ensure the function of the brake pad return device. This applies in particular to the transition of the brake pad return device from a relaxed state to a preloaded state.

[0031] Several embodiments of the brake pad mechanism according to the present invention are described in detail below with reference to the accompanying drawings. In the accompanying drawings:

[0032] Figure 1 and Figure 2 A view showing a disc brake having a brake pad mechanism according to a first embodiment of the present invention;

[0033] Figure 3 shows a view of two brake pad mechanisms according to a first embodiment, wherein the two brake pad mechanisms are in a state of being attached to a retaining element and preloaded by a brake pad resetting device;

[0034] Figure 4 shows a front view of a brake pad mechanism according to a first embodiment;

[0035] Figure 5 and Figure 6 A disc brake having a brake pad mechanism according to a second embodiment of the present invention is shown;

[0036] Figure 7 shows a view of two brake pad mechanisms according to a second embodiment, wherein the two brake pad mechanisms are in a state of being attached to a retaining element and preloaded by a brake pad resetting device;

[0037] Figure 8 shows a front view of a brake pad mechanism according to a second embodiment;

[0038] Fig. 9 and Fig.10 A view showing a disc brake having a brake pad mechanism according to a third embodiment of the present invention;

[0039] Fig.11 shows a view of two brake pad mechanisms according to a third embodiment, wherein the two brake pad mechanisms are in a state of being attached to a retaining element and preloaded by a brake pad resetting device;

[0040] Fig.12 A front view of a brake pad mechanism according to a third embodiment is shown.

[0041] Figure 1A plan view of a disc brake, generally designated 1000, is shown. The disc brake 1000 has a brake caliper 100, a brake pad mechanism 200, 202, and a brake pad return device 300, 302. The brake pad mechanism 200, 202 is attached to the brake caliper 100 by means of brake pad retaining pins 102, 104. The brake pad mechanism 200, 202 is at least partially received in a receiving opening 106 of the brake caliper 100. The brake pad mechanism 200, 202 is preloaded into an initial position of the brake pad mechanism by means of the brake pad return device 300, 302. Figure 1 In FIG. 2 , the brake pad mechanisms 200 , 202 are located in the initial position.

[0042] The brake pad mechanism 200 includes a brake pad carrier plate 204 and a friction pad 206 attached to the brake pad carrier plate. In the same manner, the brake pad mechanism 202 is composed of a brake pad carrier plate 208 and a friction pad 210 attached to the brake pad carrier plate. Two fastening sections 212, 214 and 216, 218 are formed on each of the brake pad carrier plates 204, 208. The brake pad reset device 300, 302 is attached to these fastening sections 212, 214, 216, 218. The brake pad reset device 300, 302 is fastened not only to the fastening sections 212, 214, 216 and 218, but also to the brake pad retaining pins 102 and 104. The brake pad return device 300 , 302 therefore extends between two opposing fastening sections 212 , 214 , 216 and 218 of the brake pad carrier plates 204 and 208 and thus spans the receiving opening 106 in the brake caliper 100 .

[0043] Each of the fastening sections 212, 214, 216 and 218 has a bearing surface 220, 222, 224 and 226, respectively, on which the corresponding brake pad return device 300, 302 can be supported. The bearing surfaces 220, 222, 224 and 226 to which the brake pad return device 300, 302 is attached extend obliquely or in a sloped manner, such as from Figure 1 The slope of the brake pad return devices 300, 302 is obvious.

[0044] Figure 2 A side view of a disc brake 1000 with a brake caliper 100 is shown. A brake pad mechanism 202 is accommodated in the brake caliper 100. The brake pad mechanism 202 comprises fastening sections 216, 218. Each of the fastening sections 216, 218 has a respective obliquely extending bearing surface 224, 226. A respective brake pad return device 300, 302 is attached to a respective bearing surface of the obliquely extending bearing surfaces 224, 226.

[0045] exist Figure 3 In the illustrated view, the brake pad mechanism 200, 202, the brake pad retaining pin 102, the brake pad return device 300, and the actuating pistons 108, 110 are shown. A thickened portion 112 can be seen on the brake pad retaining pin 102, which is inserted into the brake caliper (see Figure 1 ) during the period. Actuating pistons 108 and 110 may move brake pad mechanisms 200, 202 toward each other so as to engage friction pads 206, 210 with a brake disc (not shown) present in region A, thereby producing a braking effect.

[0046] The brake pad return device 300 is attached to the fastening sections 212, 216 of the brake pad carrier plates 204, 208, and to the brake pad retaining pin 102. The brake pad return device 300 has a first return unit 304, a second return unit 306, and a fastening device 308. The fastening device 308 has a fastening protrusion 310 by which the brake pad return device 300 is fastened to the brake pad retaining pin 102. The fastening protrusion 310 may have a latching nose (not shown) that may engage behind the brake pad retaining pin 102 to fasten the brake pad return device 300. The return units 304 and 306 are connected to the fastening device 308 by arms 312 and 314. The return unit 304 has a spring section 316 and a receiving section 318, which is connected to the arm 312 by the spring section 316. The return unit 306 likewise has a spring section 320 and a receiving section 322. The receiving sections 318 and 322 are of U-shaped design. The brake pad return device 300 is fastened to the fastening sections 212 and 216 of the brake pad carrier plates 200, 202 by means of its receiving sections 318 and 322.

[0047] The receiving sections 318 and 320 of the brake pad return device 300 are supported on the bearing surfaces 220 and 224 of the fastening sections 212, 216. The bearing surfaces 220, 224 have an inclined or ramped design, as can be seen in particular from the slope range of the brake pad return device 300. The bearing surface 220 extends between the face 204a to which the friction pad 208 is attached and the back face 204b of the brake pad carrier plate 204. The bearing surface 224 extends between the face 208b to which the friction pad 210 is attached and the back face 208a of the brake pad carrier plate 208. Therefore, the bearing surfaces 220 and 224 extend over the entire thickness of the brake pad carrier plates 204 and 208 and are substantially perpendicular to the faces 204a and 208a of the brake pad carrier plates 204 and 208 to which the friction pads 206 and 210 are attached. The bearing surfaces 220 and 224 also extend generally perpendicularly to the back faces 204b and 208b of the brake pad carrier plates 204 and 208 and form contoured edges of the brake pad carrier plates 204 and 208. The above embodiments apply similarly to the bearing surfaces 222 and 226 of the fastening sections 214 and 218, but these bearing surfaces are not Figure 3 Shown in.

[0048] Figure 4 A front view of the brake pad mechanism 200 is shown. The brake pad mechanism 202 has exactly the same design as the brake pad mechanism 200 and therefore the following statements apply similarly to the brake pad mechanism 202.

[0049] The brake pad arrangement 200 comprises a brake pad carrier plate 204 and a friction pad 206 attached thereto, and basically has four main contour edges 228, 230, 232 and 234, which determine the shape of the brake pad carrier plate 204. The contour edges 228 and 230 extend substantially parallel to each other and to the longitudinal axis L of the brake pad carrier plate 204. The contour edges 232 and 234 extend transversely to the longitudinal axis L. Fastening sections 212 and 214 are formed on the contour edge 228 extending parallel to the longitudinal axis L, to which the brake pad resetting devices 300, 302 are fastened. The fastening sections 212 and 214 protrude from the contour edge 228 in a direction transverse to the longitudinal axis L of the brake pad carrier plate 204. Figure 4 , the fastening sections 212 and 214 are arranged in a direction transverse to the longitudinal axis L above the friction pad 206 .

[0050] Each of the fastening sections 212 and 214 has a bearing surface 220 and 222, respectively, on which the corresponding brake pad return device 300, 302 can be supported. Figure 4Schematically illustrated, the bearing surfaces 220 and 222 extend obliquely at predetermined angles α1 and α2 relative to the longitudinal axis L. Schematically, Figure 4 The angles α1 and α2 in FIG. 2 are each formed between an imaginary extension of the bearing surfaces 220 and 222 and the longitudinal axis L or an imaginary line extending parallel to the longitudinal axis L. For example, the angles α1 and α2 may each be 30°. The bearing surfaces 220 and 222 extend parallel to each other and obliquely relative to the longitudinal axis L of the brake pad carrier plate 204.

[0051] The brake pad carrier plate 204 has two elongated openings 236 and 238 through which the brake pad retaining pins 102, 104 extend. The elongated opening 236 has two edges 240 and 242, which extend at least approximately parallel to each other and are connected to each other by edges 244 and 246. The edges 244 and 246 also extend at least approximately parallel to each other. The edges 240 and 242 extend parallel to the longitudinal axis L of the brake pad carrier plate 204, and the length of the edges defines the maximum extent of the elongated opening 236. The edges 244 and 246 are shorter than the edges 240 and 242. The elongated opening 238 has exactly the same design as the elongated opening 236 and also has four edges 248, 250, 252, 254, wherein the edges 248 and 250 extend at least approximately parallel to the longitudinal axis L. The opening 236 is associated with the fastening section 212 and the fastening opening 238 is associated with the fastening section 214. The fastening section 306 and the fastening projection 310 of the brake pad return device 300, 302 can be seen in the openings 236 and 238 (see Figure 3 ), the fastening protrusions hold the brake pad return devices 300 , 302 on the brake pad retaining pins 102 and 104 .

[0052] By means of the bearing surfaces 220 and 222 extending obliquely with respect to the longitudinal axis L, the preload force generated by the brake pad return device 300, 302 can be divided into essentially two force components. One of the two force components acts in the direction of the longitudinal axis L and is hereinafter referred to as F T The other of the two force components acts in a direction transverse to the longitudinal axis L and is denoted by F R In the state where the disc brake 1000 is attached to the vehicle, the force component F T Acting tangentially with respect to the associated wheel axle or a brake disc (not shown) attached to the wheel axle. In contrast, the force component F R The two force components F act in the radial direction relative to the associated wheel axle (not shown). R and F T The brake pad mechanism 200 is preloaded into a predetermined position and / or orientation on the brake caliper (see Figure 1 and Figure 2 ). Force component F T The brake pad mechanism 200 is preloaded to a position where the brake pad carrier plate 204 contacts the brake caliper (see Figure 1 and Figure 2 For example, the brake pad carrier plate 204 may be provided with a contoured edge 234 (at Figure 4 on the left side of the brake caliper (see Figure 1 ).

[0053] By virtue of the distribution of the preload force provided by the brake pad return device 300, 302 generated by the obliquely extending bearing surfaces 220 and 222, undesirable noise phenomena can be prevented. R , in particular, it is possible to reduce or suppress rattling noises when the vehicle is running on uneven roads. T In particular, impact noise is prevented when changing the direction of travel, ie when changing between forward travel and reverse travel, because the force component counteracts the movement of the brake pad mechanism 200 away from contact with the brake caliper (see Figure 1 and Figure 2 ), and thus the impact of noise generation on some other sections of the brake caliper can be prevented or weakened.

[0054] Figures 5 to 8 1 shows a disc brake 1100 on which a brake pad mechanism 200 according to a second embodiment is used. Figures 1 to 4 The first embodiment described and Figures 5 to 8 The essential difference between the second embodiment shown lies in the fastening sections 212 , 214 , 216 , 218 and their bearing surfaces 220 , 222 , 224 and 226 .

[0055] In the second embodiment, the bearing surfaces 220, 222, 224 and 226 also extend obliquely to the longitudinal axis L of the brake pad carrier plates 204 and 208. However, in particular Figure 6 and Figure 8 As can be seen in FIG. 2 , the bearing surfaces 220 and 222 of the fastening sections 212 and 214 are inclined in opposite directions. The same applies to the bearing surfaces 224 and 226 of the fastening sections 216 and 218 of the brake pad carrier plate 208. Figure 8 Brake pad mechanism 200 is shown, wherein these statements also apply similarly to brake pad mechanism 202 .

[0056] like Figure 8As shown, the bearing surfaces 220 and 222 of the fastening sections 212 and 214 are inclined in opposite directions, i.e. the bearing surfaces are not parallel to each other. The bearing surfaces 220 and 222 extend at predetermined angles α1 and α2 relative to the longitudinal axis L. In order to illustrate the angles α1 and α2, these angles are drawn between the extension of the bearing surfaces 220 and 222 and an imaginary line parallel to the longitudinal axis L. Due to the opposite inclinations of the bearing surfaces 220 and 222, the angles α1 and α2 open in opposite directions. The brake pad return devices 300 and 302 are fastened to the fastening sections 220 and 222. The brake pad return devices 300 and 302 are supported on the bearing surfaces 220 and 222. The bearing surfaces 220 and 222 form the contour edges of the brake pad carrier plate 204. The bearing surfaces 220 and 222 extend over the entire thickness of the brake pad carrier plate 204.

[0057] By virtue of the bearing surfaces 220 and 222 extending obliquely relative to the longitudinal axis L, the brake pad return devices 300 and 302 are likewise attached obliquely to the brake pad carrier plate. By virtue of the obliquely extending bearing surfaces 220 and 222, the preload force provided by the brake pad return devices 300 and 302 can be divided into a tangential force component F T and radial force component F R The tangential force component F provided by the brake pad return devices 300 and 302 T Acting in opposite directions along the longitudinal axis L. By the tangential force components F acting in opposite directions or pointing towards each other T , and the radial force component F of the brake pad return devices 300 and 302 R , the brake pad mechanisms 200 and 202 are centered in the receiving openings of the brake caliper (see Figure 5 As a result, a predetermined spacing can be established between the brake pad mechanisms 200 and 202 and the surrounding section of the brake caliper (see Figure 5 ). This predetermined interval can be in particular Figure 8 A connection is established between the left and right contour edges 232 and 234 and those sections of the receiving opening of the brake caliper which are opposite to the contour edges (see Figure 5 ). By means of the oppositely inclined support surfaces 220 and 222, rattling noises which occur in particular on uneven road surfaces can be suppressed. However, impact noises which occur when the driving direction changes are also reduced.

[0058] Figures 9 to 12 A disc brake 1200 having brake pad mechanisms 200 and 202 according to a third embodiment is shown. The third embodiment is based on the above reference Figures 5 to 7The second embodiment described herein essentially differs from the third embodiment described below in the extent of the elongated openings 236 and 238 through which the brake pad retaining pins 102 and 106 extend.

[0059] The elongated openings 236 and 238 extend obliquely relative to the longitudinal axis L of the brake pad carrier plate 204 (see Fig.12 ), but parallel to the support surfaces 220 and 222, which in turn extend obliquely relative to the longitudinal axis L. In particular, the openings 236 and 238 have two mutually parallel edges 240, 242 and 248, 250, which determine the maximum extent of the elongated openings 236 and 238. The edges 240, 242 and 248, 250 extend obliquely at a predetermined angle relative to the longitudinal axis L. For example, the predetermined angle may be 30°. The edges 240, 242 and 248, 250 extend parallel to the support surfaces 220 and 222. The brake pad return devices 300 and 302 attached to the support surfaces 220 and 222 each generate a tangential force component F T and radial force component F R The tangential force components F of the two brake pad return devices 300 and 302 are T The brake pad arrangements 200, 202 may be preloaded into a central position in the receiving opening of the brake caliper, ie the brake pad arrangements 200 and 202 have a predetermined spacing relative to the surrounding section of the brake caliper (see Fig. 9 ).

[0060] By means of the obliquely extending stop surfaces 220 and 222 and the obliquely extending elongated openings 236 and 238, the brake pad mechanism can overcome the preload force of the brake pad return devices 300 and 302 or overcome the force component F generated by the brake pad return devices 300 and 302. T and F R Instead, the brake pad mechanisms 200 and 202 can move in the receiving opening of the brake caliper. Therefore, in the event of a tangential load acting on the brake caliper and / or in the event of a load occurring in the vertical direction, the brake pad mechanisms 200 and 202 can perform a "rocking movement" in the receiving opening of the brake caliper. As a result, the brake pad mechanisms 200, 202 can no longer strike the brake caliper in the extended region, but can instead "roll", for example, by means of one of the contour edges 230, 232 and 234 located on the brake caliper section opposite the contour edge. As a result, rattling noises generated in the event of uneven road surfaces, as well as impact noises generated when the driving direction changes, i.e. when changing from forward driving to reverse driving (or vice versa), are reduced or suppressed.

Claims

1. A brake pad mechanism for a disc brake (1000; 1100; 1200) of a vehicle braking system, the brake pad mechanism comprising: at least one brake pad carrier plate (204, 208), and at least one friction pad (206, 210), the at least one friction pad attached to the at least one brake pad carrier plate (204, 208), in, The brake pad carrier plate (204, 208) has at least one fastening section (212, 214, 216, 218), which is designed to fasten a brake pad return device (300, 302), wherein the fastening section (212, 214, 216, 218) has at least one bearing surface (220, 222, 224, 226) for the brake pad resetting device (300, 302), and the at least one bearing surface (220, 222, 224, 226) extends obliquely relative to the longitudinal axis (L) of the brake pad carrier plate (204, 208), wherein the at least one fastening section comprises a first fastening section (212, 216) and a second fastening section (214, 218), the first fastening section and the second fastening section each having a bearing surface (220, 222, 224, 226) extending obliquely relative to a longitudinal axis (L) of the brake pad carrier plate (204, 208), The supporting surface (220, 224) of the first fastening section (212, 216) and the supporting surface (222, 226) of the second fastening section (214, 218) extend parallel to each other.

2. The brake pad mechanism according to claim 1, in, The brake pad carrier plate (204, 208) has at least one elongated opening (236, 238) which is designed to receive a retaining element (102, 104) for the brake pad arrangement (200, 202).

3. The brake pad mechanism according to claim 2, in, The at least one elongated opening (236, 238) extends parallel or obliquely relative to a longitudinal axis (L) of the brake pad carrier plate (204, 208).

4. The brake pad mechanism according to claim 3, in, The at least one elongated opening (236, 238) extends parallel to at least one bearing surface (220, 222, 224, 226) of the at least one fastening section (212, 214, 216, 218).

5. The brake pad mechanism according to claim 4, in, The at least one fastening section (212, 214, 216, 218) is formed on a contoured edge (228) that extends at least substantially parallel to a longitudinal axis (L) of the brake pad carrier plate (204, 208).

6. The brake pad mechanism according to any one of claims 1 to 5, in, The at least one bearing surface (220, 222, 224, 226) extends at least approximately at right angles to a face (204a, 208a) of a brake pad carrier plate (204, 208) to which the friction pad (206, 210) is attached.

7. A disc brake (1000; 1100; 1200), comprising: Brake caliper (100), A plurality of brake pad mechanisms according to any one of claims 1 to 6, the plurality of brake pad mechanisms comprising a first brake pad mechanism (200) and a second brake pad mechanism (202), at least one retaining element (102, 104) on which the first brake pad arrangement (200) and the second brake pad arrangement (202) are suspended, and At least one brake pad return device (300, 302), wherein: The at least one brake pad resetting device (300, 302) is attached to the at least one retaining element (102, 104) and in each case to at least one fastening section (212, 214, 216, 218) of a brake pad carrier plate (204, 208) of the first brake pad arrangement (200) and the second brake pad arrangement (202), wherein the at least one brake pad resetting device (300, 302) preloads the first brake pad arrangement (200) and the second brake pad arrangement (202) into an initial position.

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