EP3359844A1

EP3359844A1 - Disk brake for a utility vehicle, and brake pad set

Info

Publication number: EP3359844A1
Application number: EP16781729.5A
Authority: EP
Inventors: Oliver Krause; Matthias Klingner; Michael Peschel; Tobias Schöfberger; Philipp ADAMCZYK
Original assignee: Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH
Current assignee: Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH
Priority date: 2015-10-09
Filing date: 2016-10-10
Publication date: 2018-08-15
Also published as: RU2694388C1; DE102016104969A1; CN108368898B; US20180223920A1; WO2017060514A1; US20180223929A1; US10738844B2; BR112018007044B1; BR112018007044A2; EP3359842A1; EP3359842B1; WO2017060515A1; RU2694692C1; AR106275A1; EP3359842B2; AU2016335294A1; RU2695751C1; CN108350962B; CN108350963A; EP3359843A1

Abstract

The invention relates to a disk brake (100) for a utility vehicle, having a brake caliper (1) that overlaps a brake disk (2) and is designed as a sliding caliper, which is fastened to a stationary brake carrier (6) and has a central opening (41) above the brake disk (2). Said disk brake comprises two brake pads (3), which are arranged in the brake caliper (1) and are movable in opposite directions, each have a lining carrier plate (4) and a friction lining (5) fastened thereon, of which an action-side brake pad can be pressed against the brake disk (2) by means of a tightening device via at least one brake plunger, and at least one restoring device, by way of which the brake caliper (1) can be returned after displacement and release of the brake caused by braking, wherein the restoring device has a spreading device (8), which engages the brake pads (3) located opposite each other and acts equally against the respective tightening direction having resilient spreading elements that engage the respective lining carrier plate (4). The spreading device (8) is arranged in the central opening (41), wherein the spreading elements engage directly or indirectly outside the friction linings (5) one-sided in the center region, or at at least two contact regions of the brake pads (3) arranged at a distance from each other with respect to the center, wherein the contact regions each have a contact surface and a bearing surface, on which the spreading elements are movably arranged. The invention further relates to a corresponding brake pad set.

Description

DESCRIPTION

Disc brake for a commercial vehicle and brake pad set

The invention relates to a disc brake for a commercial vehicle according to the preamble of claim 1. The invention also relates to a brake pad set.

In a generic disc brake, also known as a sliding caliper brake, an action-side brake lining is pressed against a vehicle-side brake disc in the case of braking by means of an application device which can be actuated pneumatically or electromotively. In the further course of the braking process, the brake caliper, relative to the brake disc, is displaced counter to the application direction of the brake pad on the brake side, taking the opposing, reaction-side brake pad against the other side of the brake disc.

After releasing the brake remains in the known disc brake caliper in this position, in which the brake pads, but at least the reaction-side brake pad while depressurized, but abraded against the brake disc. The residual grinding moments of the brake linings which occur as a result during driving have a disadvantageous effect insofar as they lead to increased fuel consumption as well as a reduction in the service life of the components involved, namely the brake disk and the brake linings.

Although there is a slight release of the brake pads during driving, for example, by a wobble of the brake disc and by vibrations and lateral acceleration when cornering. However, these effects are not sufficient to effectively prevent the mentioned residual grinding moments.

To counteract this problem, a disc brake is disclosed in the generic DE 10 2007 001 213 with a rear part device which is arranged in one of the guide rails, via which the caliper is slidably held on the brake carrier, and which has a resilient return element up that the caliper is moved to a starting position. In principle, this construction has proven itself. However, the use of this known rear part device can lead to problems in air-operated disc brakes heavy commercial vehicles, since here wide limits of variable influences by component tolerances and component deformations are effective that do not allow a safe function of this rear part in each case.

Comparable problems arise in a disc brake as it is thematized in DE 10 2012 006 1 1 1 A1. In this case, a rear part device is arranged on the opposite side of the application device, the reaction-side brake lining side, whereby an effective, in particular automatic reset of the caliper is achieved, at the same time minimal interference with the system Stiff speed.

In any case, the rear part device acts on the brake caliper, wherein the brake carrier acts as an abutment.

DE 43 01 621 A1 describes a floating-caliper disc brake with a stationary brake carrier, which has two support arms projecting beyond the outer edge of a brake disk, with brake shoes arranged on both sides of the brake disk, each having a friction lining and a back plate, which can be displaced on the carrier arms are supported, with an axially displaceably guided on the brake carrier floating caliper, which surrounds the brake shoes and has a specific for pressing the brake shoes to the brake disc actuator, with an axially acting on the brake shoes in brake release direction spring arrangement, the setting of a clearance after braking supported between brake shoes and brake disc. The spring arrangement has at least one spreading spring, which is attached to a support arm of the brake carrier in the axial direction as a whole immovably, that the attachment to a located on the outer edge of the brake disc portion of the support arm, and that the spreading spring has at least two spring arms, the the spring plates of the brake shoes in the axial direction resiliently rest.

US2014 / 0339026 A1 describes a spreading spring, comprising a locking arm, which connects the spreading spring with a brake component, a retraction arm; and biasing means disposed between the locking arm and the return arm, wherein the biasing means comprises six spiral loops or more, the energy which during a Save brake activation and as soon as the braking process is completed, the brake components (brake pad) retracts.

The invention has for its object to further develop a disc brake of the generic type so that the service life of the brake pads and the brake disc in particular increases structurally simplest means and operating costs are reduced overall.

Another object is to provide a corresponding brake pad set.

This object is achieved by a disc brake with the features of claim 1. The further object is achieved by a brake pad set with the features of claim 28.

A disc brake according to the invention for a commercial vehicle, with a brake disc cross-trained, designed as a sliding caliper caliper, which is attached to a stationary brake carrier and having a central opening above the brake disc comprises two arranged in the caliper, in opposite directions movable, each a pad carrier plate and a fastened thereto Brake linings having brake linings, of which a aktionsseitiger by means of an application device via at least one brake stamp against the brake disc can be pressed, and at least one rear part device with which the caliper is traceable to a brake-induced displacement and release of the brake, wherein the rear part means on the opposite brake pads having attacking, opposite to the respective Zuspann- direction equally acting spreader with acting on the respective pad carrier plate resilient spreading elements. The spreading device is arranged in the central opening, wherein the spreading directly or indirectly outside of the friction linings attack on one side in the central region or at least two spaced apart to the center abutting areas of the brake pads, wherein the contact areas each have a contact surface and a support surface on which the spreading are movably arranged.

The inventive design of the disc brake is a synchronous provision of both brake pads and a provision of the Brake caliper achieved when the brake is released, the synchrony concerns both the restoring forces as well as the return paths. In this case, the restoring force counteracts the respective application direction of the two brake linings, ie, towards the saddle back in the case of the reaction-side brake lining and toward the saddle head during the action-side brake lining, with gap formations with respect to the brake disc.

The attack of the spreader on the two brake pads is advantageously carried out on the lining carrier plates on the side facing the friction lining attached thereto or on the opposite back side. In order to avoid tilting of the respective brake pad during the return, the expansion element engages either centrally, on an upper exposed edge region of the lining carrier plate or symmetrically on two contact areas right and left.

An inventive brake pad set for the disc brake according to the invention has at least two brake pads, each with a pad carrier plate and a mounted on the pad carrier plate friction lining and the above spreader. The pad carrier plate have outside of the friction linings on one side in the central region or at least two abutting to the center each other arranged contact areas each have a contact surface and a support surface. This results in the advantage of realizing several functions (axial and radial spring force transmission, spring deflection) in a confined space.

In one embodiment, the spreading elements extend, starting from a central region in the middle of the opening, from the inside outwards to the abutment areas which are arranged at a distance from one another in the center. It is also possible for the spreading elements, starting from a central region in the middle of the opening, to extend from the inside outwards to the abutment regions which are arranged uniformly spaced from one another in the middle.

In this way, the spreading device is arranged centrally in the caliper, wherein it is also arranged within an envelope of a rim of an associated wheel.

The two spreading elements are centered (in relation to the carrier horns) connected to each other. Thus, a - in a small tolerance range - the same spring force can be ensured both inlet side and outlet side. Different spring forces between the outlet and inlet side, which can lead to oblique wear, are minimized by the one-sided attack per spring one plaque. Another embodiment provides that the central region of the opening on either side of a virtual center of the opening approximately parallel to the Level of the brake disc extends in a length in a range of 30 to 50% of a longitudinal axis of the opening. This results in an advantageous adaptation of the spring forces.

In another embodiment, the spreader has spring arms, two of which abut each other on an associated pad carrier plate, wherein the spring arms are connected in the central region of the opening, which simplifies installation during installation and maintenance.

According to a further aspect of the invention, the spreading device has oppositely acting spreading elements, preferably elastically acting, in particular in the form of spring elements. In the simplest form, a compression spring between the two brake pads is arranged as a screw or leg spring, wherein the leg spring is mounted centrally above the brake disc, for example on a pad retainer, with which the two brake pads can be pressed under bias in a lining shaft. In principle, when using a Schraubenfe- their end-side connection to the lining carrier plates sufficient to meet the spreading function sufficiently.

According to a further aspect of the invention, the spreading device is in operative connection with the brake carrier instead of the lining retaining yoke, which forms a pivot bearing and in which the brake linings are mounted so as to be displaceable coaxially with the brake disk.

For this purpose, a retaining bow is preferably provided, which spans the brake disk in the peripheral region, up to the brake carrier horns of the brake carrier limiting both sides of a lining shaft and, in relation to the thickness of the brake disk, is arranged centrally therewith. The tie can be connected in one embodiment to two opposite, connected to the brake carrier brackets, which allows easy connection. Alternatively, the retaining bow can be connected to at least the two brake carrier horns of a lining shaft, while the spreading elements acting on both brake pads are connected to the retaining bow. This thus forms a centering device, which can be realized structurally different in correspondence with the brake carrier as a fixed bearing.

Preferably, the retaining bow is formed in its contour C-shaped, with a brake disc in the mentioned extent spanning center leg and two rectified to the brake carrier horns angled end legs, one of which is attached to a Bremsträgerhorn the corresponding lining shaft.

By means of the tether on which the spreader is fixed with their spring arms, an automatic centering of the caliper takes place after releasing the brake, so after completing a braking operation, the brake pads are reset by the so far fixed positioning of the spreader so that the caliper centered on the brake disc.

Incidentally, the spreader is designed so that it is effective over the complete wear of the brake pads.

Since the points of application of force on the brake linings change with increasing wear, the functional parts of the spreading device which make contact with the brake linings are designed such that they are slidably supported on the lining carrier plate of the respective brake linings.

In order to ensure a secure mounting of the spring legs or in another constructive variant of the spring arms even with Rüttelbelastung while driving, the spring arms are based on, based on the bottom of the lining shaft, upper edge of the lining carrier plate from, also, as described above slidably.

With appropriate design of the spreader can also be dispensed with the use of lining retaining springs, which, as from the prior Technique known, are attached to the upper edge of the lining carrier plates and on which a lining retaining bracket is supported, so that the respective brake pad is held under bias in the lining shaft of the brake carrier. The structural realization of the spreading device according to the invention may be structurally different, with a significant advantage resulting from the fact that can be dispensed with movable components substantially, with the exception, of course, the resilient expansion elements that perform a resilient deflection function.

The now possible renouncement of moving parts naturally increases the life of the spreading device, as does the small number of necessary components, which also results in an extremely cost-effective production and assembly.

In a further embodiment, each spring arm is formed at the end with a fork-shaped spring end, forming a support leg and a Andruckschenkels, wherein the support leg movable on a support surface of a narrow side of the lining carrier plate and the Andruckschenkel with pressure on a contact surface of the friction lining facing side of the lining carrier plate movable is applied. In this way, an advantageous simultaneous functionality is possible, namely that the spring arm can not only initiate compressive forces on the contact surface on the lining carrier plate, but also in its movements by the contact surface and the support surface is guided displaceable bar. In addition, it is possible that the brake pad is resiliently held in its brake lining shaft by the spring force which is introduced into it via the bearing surface.

In one embodiment, the support surface may be disposed at an angle to a horizontal, wherein the angle is in a range of 3 to 15 °.

In another embodiment, the contact surface may protrude from the lining carrier plate or be formed in the lining carrier plate. This is an advantageous adaptation to different brake versions possible.

In addition, a projection on the contact surface may be provided, wherein the projection protrudes from the contact surface in a slot between the support leg and the Andruckschenkel. This can allow for accurate guidance and improved power transmission. In an alternative embodiment, each spring arm is formed with a spring end end with a Andruckschenkel, the Andruckschenkel with a support portion of the friction lining facing side of the Belagträger- plate is in contact with the Andruckschenkel with a contact portion with pressure on a contact surface of the support portion of the lining carrier plate movably abuts and at the same time rests movably with a support portion on a support surface of the support portion of the lining carrier plate. In this way there is the advantage that two functions can be realized in the Andruckschenkel, namely spring force transmission in the axial and radial directions on the brake pad with simultaneous guidance of the spring end and space and material savings.

In one embodiment, it is preferred that the support section with the bearing surface and the bearing surface is formed in the lining carrier plate. This is advantageous because there is space and material savings.

The bearing surface of the contact areas may be arranged at an angle to a horizontal, wherein the angle is in a range of 3 to 15 °. For a guide of the spring end is improved.

If the contact surface protrudes from the lining carrier plate or is formed in the lining carrier plate, this can make possible an advantageous adaptation to different installation situations.

It is also possible that a projection is provided on the contact surface, wherein the projection protrudes from the contact surface. For a more accurate guidance of the spring end is possible. A particularly advantageous embodiment can be made possible if the abutment areas have a support portion which is formed with the contact surface and the support surface in the lining carrier plate. This results in a space and material savings. In a particularly preferred embodiment, it is provided that the contact surface extends to the side surface of the lining carrier plate, which is provided with the friction lining offset in the direction away from the friction lining. This results in an advantageous guidance of the spring end in the lining carrier plate together with a spring force transmission in a small installation space. - The spreader comprises two spreading elements, wherein a first spreading element acts on a first coating and a second expansion element on a second coating. The two spreading elements are connected to each other in the middle (in relation to the carrier horns). Thus, a - in a small tolerance range - the same spring force can be ensured both inlet side and outlet side. Different spring forces between the outlet and inlet side, which can lead to oblique wear are minimized by the one-sided attacking one spring per covering

- A uniform force application of the springs on the action side and reaction side, or on the pressure piece and saddle side, can be realized by a flexible adjustment of the central web. Furthermore, can be compensated by the flexible center bar low geometric misalignments of disc, pad and carrier.

- Through the center bar, the active rear part device can be easily positioned and held down by the pad retaining bracket. Advantageously, the return part device can be easily removed and replaced in a pad change.

- By exploiting the entire lining shaft between the horns spreaders or springs can be used with a very low spring rate to apply fairly constant forces in pad wear. Due to the long spring travel, the spreading elements can be tolerant with respect to spring forces. The spring travel leads to a constant spring rate with low tolerances

- In a preferred embodiment, only two springs are used.

- The spreading can be made of inexpensive and geometrically flexible sheets.

- Due to the offset with different pivot points, a lower spring rate (see Patent 4943- Figure 2) are mapped. Advantageously, not many turns (costly, space consuming) necessary.

Further advantages are:

Adjustability (centering)

Per deck side the spring constant adaptable, whereby different for inside / outside and at environment - within borders - better adaptable

Installation via central centering bar - compensates for uneven force build-up Possibly "active" seat centering Active padding suspension by "fork" at the end of the spider

Further advantageous embodiments of the invention are characterized in the subclaims.

Embodiments of the invention will be described below with reference to the accompanying drawings.

Show it:

Figures 1 and 2 are each a partial section of a disc brake according to the invention in a perspective plan view;

Figure 1 a is an enlarged schematic partial sectional view of

Disc brake according to Figure 1;

Figures 3-7 further embodiments of the invention with reference to a detail of the disc brake, each also in a perspective view;

Figures 8-28 further embodiments of the invention, each as a detail of the disc brake in a perspective view; and

Figure 29 is a perspective view of another embodiment of the disc brake.

FIG. 1 shows a part of a disc brake 100 for a commercial vehicle, with a brake caliper 1 that overlaps a brake disc 2. The brake disk 2 has a brake disk axis of rotation 2 a (see FIG. 29). The caliper 1 is relative to the brake disc 2 axially in the direction of the brake disc axis 2a slidably connected to a brake carrier 6, to which the caliper 1 is mounted on guide bars, not shown, which are connected to the stationary held on the vehicle brake carrier 6.

The caliper 1 comprises an application section 1 a, a saddle back 1 b and two tension struts 1 c. The application section 1 a receives an application device (not shown) of the disc brake 100. The application section 1 a extends on one side with a side parallel to the plane of the brake disk 2. te the brake disc 2. On the other side of the brake disc 2, also parallel to the brake disc 2 extending, the saddle back 1 b arranged. The saddle back 1 b is connected to the application section 1 a at one end in each case with a tension strut 1 c. The tension struts 1 c extend substantially perpendicular to the application section 1 a and to the seat back 1 b. The application section 1 a, the saddle back 1 b and the tie rods 1 c set in this arrangement, a central opening 41 between them, which spans the brake disc 2. The opening 41 has an imaginary longitudinal center line, which lies in the plane of the brake disc 2 and the imaginary centers of the tie rods 1 c connects. In addition, the opening 41 has a further imaginary lateral center line, which connects an imaginary center of the application section 1a to an imaginary center of the saddleback 1b. The longitudinal center line and the transverse center line intersect at an imaginary center, which is referred to here as the virtual center of the opening 41.

In the brake carrier 6 brake pads 3 are arranged, which are pressed on both sides of the brake disc 2 in the case of braking. In this case, each brake lining 3 has a lining carrier plate 4 and a friction lining 5 fastened thereto on the side facing the brake disk 2, which friction lining 5 is pressed against the brake disk 2 in function, that is to say during braking.

The brake pads 3 are accessible through the central opening 41 for a change and for maintenance. They can be inserted through this central opening 41 in their associated Belichtschächte and removed again from it. The lining shafts are each fixed laterally by brake carrier horns 25 (see FIG. 8).

The braking is carried out by means of the application in the clamping portion 1 a of the caliper 1 there in a receiving space arranged application device with a brake lever which is positioned in a dome 23 of the caliper 1. The associated brake pad 3, referred to as action-side or zuspannseitiger brake pad, first contacted during braking the brake disc 2. In the course of the brake caliper 1 is displaced by reaction forces occurring opposite, taking along the reaction-side brake pad 3, to this also on the brake disc 2 comes rubbing to the plant. After releasing the brake, the two opposing brake pads 3 are released so far from the brake disc 2 by means of a rear-part device that it runs freely relative to the brake pads 3. The rear part device consists of at least one spreader 8, which acts on the opposing brake pads 4, according to the invention, the same acting counter to the application direction.

In the example shown in Figure 1, the spreader 8 consists of two mirror-inverted shaped, but otherwise identical band springs 9, which are held on a pad retaining spring 7 of the respective lining carrier plate 4, to which each band spring 9 a tab 1 1 is formed, the form-fitting in a slot 10 of the pad retaining spring 7 engages. For this purpose, an enlarged schematic partial sectional view of the disc brake 100 according to FIG. 1 is shown in FIG. The section passes through a vertical plane with respect to FIG. 1, which passes through the brake disk axis of rotation 2a. The part of the band spring 9, which is in contact with the lining carrier plate 4, is located in a central portion of the band spring 9 and is referred to here as a printing section 1 1 a. The printing section 1 1 a is extended upward through the tab 1 1. The pressure section 1 1 a is in this example to a terminal element 7a, which is mounted to support the pad spring 7 on the lining carrier plate 4 in the middle upper region. A portion of the clamping element 7a extends through the slot 10 of the pad retaining spring 7. This slot 10 is therefore already present and can be used for the positive engagement of the tab 1 1 of the band spring 9. The portion of the clamping element 7a, the outside of which is in contact with the pressure portion 1 1 a of the band spring 9, lies with its inside on the lining carrier plate 4. In this way, the pressure force of the pressure section 1 1 a of the band spring 9 is transmitted to the lining carrier plate 4. Of course, these explanations also apply to the other strip spring 9.

In addition, a pad retaining bracket 28 (see also FIG. 8) is shown in FIG. 1 a, which is arranged above the brake linings 3 in the transverse direction of the opening 41 or in the direction of the brake disk axis of rotation 1 a between the tightening portion 1 a and the seat back 1 b and fastened thereto is. The pad retaining book Gel 28 presses here with sections of its underside on the clamp elements 7a and thus on the lining retaining springs 7, whereby the brake pads 3 are held in their lining shafts. End side, the respective band spring 9 is held axially secured to a bracket 12 which is fixed to the brake carrier 6, wherein both band springs 9 are arranged separately from one another. For axial securing are on the bracket 12, the respective end of the band spring 9 between them clamping, fuses 13 are provided.

When the brake linings 3 are tensioned, the band springs 9 are correspondingly deformed by building up a spring tension, so that after releasing the braking, the brake linings 3 are pressed out of their braking position uniformly by the spring force provided.

2 shows a further embodiment of the invention is shown, in which the spreader 8 each formed from a spring clip 14, preferably formed from spring wire. In this case, such a spring clip 14 is pivotably held at each end region of the lining carrier plate 4 on the side facing the lining holding springs 7, for which purpose a suspension 15 is arranged on the lining carrier plate 4, into which the ends of the spring clip 14, viewed radially to the brake disk 2, offset from one another and are held rotatably. In Figure 2, the suspension 15 for each end of the spring clip 14 comprises a rectangular bearing portion 151, 152, which are connected by a connection 150 such that the bearing portion 151 protrudes from the connection 150 upwards and the bearing portion 152 protrudes downward. The suspension 15 may e.g. be formed integrally with the lining carrier plate 4, for example by mechanical processing. It is also possible that the suspension 15 is attached to the lining carrier plate 4.

The suspension 15 may also be e.g. a rectangular plate, as will be described in detail below (Figure 24).

A spring clip 14 abuts against an associated brake carrier horn of the brake carrier 6, specifically on the side opposite the brake disk 2, so that when the brake linings 3 are tightened, the spring clips 14 deform under tension. When the brake is released, the brake linings 3 are pushed back against their supply direction by the spring force of the spring clips 14, comparable to the exemplary embodiment according to FIG. 1.

FIG. 3 shows a further exemplary embodiment of the spreading device 8, the illustration of the brake caliper being omitted here.

This spreader 8 consists of two, in each case on gegenüberliegen- the sides of the brake carrier 6 fixed brackets 12 connected leaf springs 17, each of which bears at its mutually facing, free ends of two scissor members 16, one of the action-side brake pad 3 and the other on reaction-side brake pad 3 is pivotally mounted. The applied for spreading spring force is achieved in this embodiment by the leaf springs 17 which bulge radially when tightening the brake pads 3 and when releasing the brake, according to the spring action, stretch, while stretching the connected scissor members 16 and spread the brake pads. 3 apart.

4 shows a further variant of the spreading device 8 is shown, which has two crossed spring legs 18 which are hinged to a tie 21. This is, comparable to the attachment of the leaf springs 17 on the brake carrier 6, also held on associated brackets 12, which spans the brake disc 2, based on the thickness thereof, in a partial circumference in the middle.

The bent ends of the crossed spring legs 18 rest on a bearing 19 of the lining carrier plate 4, so that this scissor-like construction spreads when the brake is applied, ie when the brake linings 3 move axially toward one another. The spring legs 18 are fastened to the retaining bow 21, so that the spring legs 18 are biased during application of the brake pads 3 and the brake pads 3 are spread apart by a release of the brake by this bias.

FIG. 5 shows a spreading device 8, which consists of two identical spring arms 20, which are connected to one another in the middle region in the longitudinal direction of the opening 41, as well as a retaining bow 21, which is fastened to the brake carrier 6 via brackets 12. Here are the spring arms 20 at two opposite end portions of the lining carrier plate 4 and that in a top side protruding edge region. The ends of the spring arms 20 are also bent, so that sliding on the lining carrier plate surface during application and release of the brake is easily possible. Here, too, a spread of the brake pads 3 after releasing the brake is possible by the resulting when tightening bias. In Figure 6, each spreader 8 consists of a rotatably connected to the bracket 12 bearing leg 22 which is formed loop-shaped from a spring wire and also, as well as the spring arms 20 according to FIG 5, rests on the edge region of the respectively associated lining carrier plate 4, wherein the two resilient abutment legs 22 abut each side on the mutually facing sides of the lining carrier plates 4.

In the figure 7, finally, a further variant of the invention is shown, which is substantially similar to the embodiment of Figure 1. Again, each of a brake pad 3 associated band spring 9 engages centrally on the lining carrier plate 4, preferably on a system 19, for which purpose the band spring 9 is provided with an issued investment bracket 24.

For central adjustment of the two band springs 9, relative to the brake disc 2, the band springs 9 are mounted axially displaceable on the two opposing brackets 12.

In the example shown in FIG. 8, the retaining bow 21 is C-shaped, with a center leg 26, which is centrally arranged relative to the thickness of the brake disk 2 and extends in its circumferential direction, to which an angled end limb 27 adjoins on both sides ,

In FIG. 9, which shows a partial section of a completed disc brake 100, while FIG. 8 shows only the brake carrier 6 with the brake linings 3 inserted, it can be clearly seen, as in FIG. 10, that the end limbs 27 are facing one another Are provided with tabs 29 on which pins 30 are held, which engage in holes 25 a (see Figure 26) of the brake carrier horns 25. In this case, the retaining bow 21 forms a centering device for the caliper 1, as the brake carrier 6, to which the retaining bow 21 is attached, forms a stationary part, which is slidably mounted relative to the brake caliper 1, so that after releasing the brake and a spreading the spreading device 8, ie a pushing apart of the brake pads 3 of the caliper 1 is guided in a centered position.

The figure 10 shows, moreover, the brake pads 3 with the spreader 8 and the tie 21 in isolation.

In the figures 8 and 9 can be further seen that a held on the brake caliper 1 pad retaining bracket 28 is supported on the pad retaining springs 7 of the brake pads 3 and the holding bow 21 holds down and braced. As can be seen from FIG. 10, the spring arms 20 of the spreader 8 are firmly connected to one another in the middle region, corresponding to FIG. 5.

Furthermore, it can be seen in FIGS. 9 and 10 that the spring arms 20 each have support legs 31 at their free end, which are supported on the edges of the lining carrier plates 4 assigned to the lining retaining springs 7 and due to which the spring arms 20 are released from their installation the respective lining carrier plate 4 is prevented during shaking movements while driving. The support legs 31 are clamped between the pad retaining springs 7 and the associated pad carrier plate 4, wherein the pad carrier plate 4 has a cutout, not shown, through which the respective support leg 31 is guided. For a tilting of the spring arms 20 is prevented.

In an enlarged view, this can be seen in the figure 11, which further shows a curved to the spring arm 20 Andruckschenkel 32 of a spring end 300, which rests against the friction lining 5 facing edge surface of the lining carrier plate 4 and as above forms a tilt protection. Moreover, it is prevented that the friction lining 5 strikes against the spring arm 20. In this case, the supporting leg 31 resting on a narrow side of the lining carrier plate 4 facing away from the brake carrier 6 and the pressure jaws form! 32, the prongs of a fork with a slot 301 as the spring end 300 of the spring arm 20 is formed. As already mentioned, the spring end 300 of the spring arm 20 is convex in the contact region with the lining carrier plate 4, that is to say the pressure leg 32 in the direction of the lining carrier plate 4. curves so as to ensure a disability-free sliding on the lining carrier plate 4.

The support leg 31 of the spring end 300 is located with a support portion 31 a of its slot 301 facing bottom on a support surface 305 of the top of the lining carrier plate 4. The Andruckschenkel 32 is connected to a contact portion 32a, which faces the lining carrier plate 4, with a contact surface 303 of the lining carrier plate 4 in contact. The contact surface 303 is located on the side of the lining carrier plate 4 on which the friction lining 5 is applied. The contact surface 303 is arranged above the friction lining 5 in an end region of the lining carrier plate 4.

The bearing surface 305 on the upper side of the lining carrier plate 4 can be arranged at an angle 306 to an imaginary horizontal with an amount in the range of, for example, 5 to 15 °.

The support surface 305 forms a guide for the support leg 31 of the spring end 300 of the spring arm 20 during its movements in directions of movement 302 (for example due to wear compensation) and a stop for these in a direction towards the top of the lining support plate 4.

In addition, the contact between the support surface 305 of the lining carrier plate 4 and the support leg 31 of the spring end 300 of the spring arm 20 forms a cushioning of the brake pad 3 in the radial direction. In addition, the lining carrier plate 4 and thus the brake pad 3 is pressed downwards into its lining shaft and cushioned by these contacts with the supporting legs 31 of the spring ends 300. When the spreader 8, such as e.g. In Fig. 1 a is shown fixed by the pad retaining bracket 28, under certain circumstances, the brake pads 3 could be performed without pad retaining springs 7.

The contact surface 303 forms a guide for the Andruckschenkel 32 of the spring end 300 of the spring arm 20 during its movements in directions of movement 302 (eg wear compensation) and a stop for this in one ner direction on the lining carrier plate 4 parallel to a brake disc axis 2a. In an embodiment not shown, the abutment surface 303 may protrude from the lining carrier plate 4 or be formed in the lining carrier plate 4, for example as a groove. The contact surface 303 and the support surface 305 may be provided as guide surfaces with a special surface treatment, for example, ground to have a low frictional resistance.

It is also possible that a projection 304 is provided, which protrudes from the lining carrier plate 4 to the spring end 300 in the slot 301. In this way, the projection forms an additional guide for the spring end 300.

FIG. 12 shows an enlarged detail of the retaining bow 21 in the connection region on the brake carrier horn 25, wherein the strap 29 rests on a flat end face of the brake carrier horn 25. The pin 30 can be formed as a rivet and inserted into a bore 25a (see FIG. 26) of the brake carrier horn 25. It is also possible that the pin 30 is integrally formed on the Bremsträgerhorn 25 or used as a separate component before.

In the figure 13, the spreader 8 according to Figures 8-13 is recognizable as a detail. At the free ends of the spring arms 20 here respective spring ends 300 are designed as bent Andruckschenkel 32. The proof tote! 32 each have the already indicated in Figure 1 1 above contact section 32a. In addition, the Andruckschenkel 32 are provided here at their lower sides with a respective support portion 32b, which is for a support contact as will be explained below with a suitable surface texture with low coefficient of friction is provided.

In FIG. 13a, an enlarged partial view of the end region of a lining carrier plate 4 of a brake lining 3 together with such a pressure leg 32 is shown. The brake pad 3 is inserted in its lining shaft between two brake carrier horns 25, of which only one is shown here. As described above in connection with FIG. 12, an end leg 27 of the retaining bow 21 is attached to this brake carrier horn 25.

The end region of the lining carrier plate 4 is here provided with a support section 44, which is formed in the lining carrier plate 4, for example by mechanical means. niche processing. The support portion 44 has a contact surface 45 and a support surface 46.

The abutment surface 45 is offset parallel to the side surface of the lining carrier plate 4, which is provided with the friction lining 5, wherein the abutment surface 45 is spaced from this side surface in the direction of the brake disk axis 2a, ie axially, by an axial depth of the support surface 46.

The Andruckschenkel 32 is disposed in the support portion 44 and communicates with its abutment portion 32 a with the contact surface 45 in contact. At the same time the Andruckschenkel 32 is with its support portion 32b on the support surface 46. The Andruckschenkel 32 is guided in this manner during its movement by its contact with the support portion 44 therethrough. The abutment surface 45 and the support surface 46 may be provided with special frictional properties by machining for this movement.

In addition, the pad carrier plate 4 and thus the brake pad 3 is pressed by these contacts with the Andruckschenkeln 32 of the spring ends 300 down into its lining shaft and cushioned. When the spreader 8, such as e.g. In Fig. 1 a is shown fixed by the pad retaining bracket 28, under certain circumstances, the brake pads 3 could be performed without pad retaining springs 7. while Figure 14 shows a partial section of the connection region of the tether 21 on the brake carrier horn 25 in an enlarged view. As a tilt protection in this case a retaining plate 40 is provided, which is attached to the center leg 26 and on which the pad holder bracket 28 is applied.

In contrast to the embodiment shown in Figure 13, the tab 29 is not angled relative to the end leg 27, but is the same course formed by this, by appropriate shaping of the tether 21st

A comparable embodiment variant is shown in Figure 15, in which, however, the securing of the end leg 27 and the tab 29 by means of a nut 33 which is screwed onto a threaded pin of the Bremsträgerhorns 25 and holds the tab 29 on the Bremsträgerhorn 25.

In the figure 16 opposite to the end leg 27 of the retaining bow 21, a support tab 34 is angled, which on the front side of the associated Bremsträgerhorns 25 rests and which, comparable to the support leg 31 of Figure 1 1, a radial securing for the tie sheet 21 and thus for the spreading device 8 forms. A further variant of the attachment of the retaining bow 21 on the Bremsträgerhorn 25 can be seen in the figure 17, which reproduces an enlarged partial section of the corresponding region of the brake carrier 6.

Here is the end leg 27 end approximately parallel to the middle give! Angled 26 and attached to the secured in Bremsträgerhorn 25 pin 30.

FIG. 18 illustrates a variant embodiment of the spreading device 8, in which the spring arms 20, of which the end section of a spring arm 20 is shown, on the one hand assumes the function of the retaining bow 21 and on the other hand performs the function of spreading.

For this purpose, the spring arm 20 is split in its end region in the longitudinal direction to form a spring bar 38 and a connecting web 37. In this case, the spring bar 38 provided with an integrally formed angled bracket 39 assumes the spreading function, i. he is tense when braking the brake lining 3 against the spring force and presses after releasing the brake pad 3 in its end position, wherein the angle tab abuts the pad carrier plate 4 both in the clamping direction and in the radial direction, ie at the upper edge of the pad carrier plate 4th

The connecting web 37, however, is end provided with a pin 30 having a tab 29, wherein the pin 30 is inserted into a bore 25a (see Figure 26) of the Bremsträgerhorns 25, as described, to allow a centering of the caliper 1 after a braking operation ,

FIG. 19 shows the middle region of a further exemplary embodiment of the spreading device 8, in which the spring arms 20 are formed from two intersecting individual springs which are firmly connected to one another in the middle region. In this case, there is a spring arm 20 of a single spring on a lining carrier plate 4 and the other arm of this single spring on the other, opposite lining carrier plate 4, equally the spring arms 20 of the other single spring. A fastening of the bracket 12 comparable to FIG. 5 is shown in FIG. However, in this case the fuse 13 for holding the retaining bow 21 is dispensed with. Instead, the retaining bow 21 is held on the bracket 12 in an axially secured manner, in particular by frictional engagement, but also by positive locking. Incidentally, the bracket 12 is inserted into bores 25a of the opposing brake carrier horns 25.

A different construction can be seen in FIG. 21, which shows an enlarged section of an attachment of the retaining bow 21.

In this case, the bracket 12 is formed as a straight rod and fixed to the end of the holding bow 21, the end leg 27 is in alignment with the middle leg 26, wherein the end leg 27 has a forked end which engages over a pin 35, which inserted into the Bremsträgerhorn 25 is sen.

In the figure 22, also an enlarged partial section in the region of a Bremsträgerhorns 25, it can be seen that adjoining a spring arm 20 of the spreading device 8 is a support tab 34 which bears against a support surface 36 of the Bremsträgerhorns 25 and on the one hand in the radial direction to the brake disc 2 and on the other hand in the axial direction is supported.

Comparable to the embodiment according to FIG. 2, FIGS. 23 and 24 each show a variant of the spreading device 8, which consists of a spring clip 14 and an abutment leg 22, which is inserted into the suspension 15 at the ends, each with one attachment end 14a, 22a. this is attached to the lining carrier plate 4.

In this case, the spring clip 14 and the abutment leg 22 are offset from one another and fastened on opposite sides on the suspension 15 and on the other hand are based on the brake carrier 6 and that in the example shown in Figure 23 below the lining carrier plate 4 and in that shown in FIG Example on the Bremsträgerhorn 25. The suspension 15 is formed as an elongated, rectangular plate with two longitudinal sides 15a, 15b. Here are two diagonally opposite ends rounded. The attachment end 14a of the spring clip 14 is connected on the upper narrow side 15a shown on the top in FIG. 24 on the right with the suspension 15, whereas the attachment end 22a of the abutment leg 22 is connected on the lower, other narrow longitudinal side 15b off-center on the left with the suspension 15.

The other ends of the spring clip 14 and the abutment leg 22 run obliquely toward each other and are firmly connected by a connecting sheet 220.

The plate of the suspension 15 is here provided with two attachment holes 15c for attachment, e.g. by means of screws or rivets.

Figure 25 shows a further embodiment, which is similar to that described in Figures 8 to 1 1, but with some differences, constructed. The tether 21 and the spring arms 20 are here in one piece, e.g. as a stamped and bent part, formed and fixedly connected in a central region by a common base portion 42. The base portion 42 is located in the virtual center of the opening 41 and in a plane which is tangent to the brake disc 2.

From this base portion 42, the middle legs 26 of the tether 21 extend downwardly bent over both sides of the brake disk 2 as shown in the embodiment of Figure 4 as flat strip portions until shortly before the tie rods 1 c, which limit the opening 41 laterally. At these points, both middle legs 26 are bent toward the tightening section 1 a of the brake caliper 1 and in each case transition into an end leg 27.

Each end leg 27 has the tab 29 with the pin 30, similar to the embodiment of Figure 8, but with the difference that the tab 29 is not widened. Each end leg 27 extends with its tab 29 in such a way that the tab 29 rests on the associated Bremsträgerhorn 25. In this case, the pin 30 is received in a bore 25a (similar to that shown in FIG. 26) and fastened to the brake carrier horn 25. This naturally applies to both sides and to both brake carrier listeners 25.

Furthermore, the base portion 42 has on its two longitudinal sides in each case a connection bent down by approx. 90 ° down to the brake disk 2. cut 43. Each connecting portion 43 connects on each longitudinal side of the base portion 42 each have two spring arms 20 with the base portion 42 parallel to the imaginary longitudinal center line of the opening 41 such that an arrangement similar to that in Figure 8 results. In this case, each connecting section 43 lies in a respective plane which is arranged at approximately 90 ° to the plane of the base section 42 and runs essentially parallel to the plane of the brake disk 2.

The spring ends 300 of the spring arms 20 are formed and described as in the embodiment of Figure 8 and in Figure 1 1.

FIG. 26 shows a further embodiment in which the retaining bow 21 is of wire-shaped design and has e.g. has a circular cross-section.

The retaining bow 21 includes a central portion 26 a in a central region of the opening 41. At the central portion 26a includes on each side of a central portion 26, which in each case in an arc in the direction of the application section 1 a through an end leg 27 to the respective Bremsträger- horn 25 tapers. Each end leg 27 is then bent downwards by about 90 ° in each case a fastening portion 27a. Each attachment portion 27a is fixed in a bore 25a of each Bremsträgerhorns 25 of the lining shaft of the action-side brake pad 3 and thus forms the support of the retaining bow 21 with the spreader 8 in the brake carrier. 6

The spring arms 20 are here not in the longitudinal direction of the opening 41, but in the transverse direction of the opening 41 in pairs connected by a connecting portion 200. Each connecting portion 200 is widened in the radial direction toward the brake disk axis of rotation 2a downwards and has a recess 201. Each recess 201 communicates with the outer contour of the retaining bow 21 and here has a semicircular cross-section which is open to receive the retaining bow 21 upwards. The connecting portions 200 of the paired spring arms 20 are arranged at a distance 203 at the central portion 26 a of the tether 21, wherein the center of the central portion 26 a of the virtual center of the opening 41 is assigned and forms the center of the distance 203. A measure of the distance 203 here corresponds to about one quarter of the longitudinal extent of the opening 41st The measure of the distance 203 may be in a range of 30 to 50%, for example. The longitudinal extent of the opening 41 are either symmetrical to the virtual center of the opening 41 or without reference to the virtual center of the opening 41. The spring arms 20 and their connecting portions 200 are integrally formed, for example, as stamped and bent parts of spring steel strip.

In the exemplary embodiment of FIG. 27, the retaining bow 21 is designed as in the embodiment according to FIG. Here, however, arranged in pairs in the transverse direction of the opening 41 spring arms 20 including their connecting portions 200 are formed wire-shaped. The connecting portions 200 are bent so as to form receptacles for the tether 21. The connecting portions 200 are arranged as in the embodiment of Figure 26 at a distance 203 at the central portion 26 a of the tether 21.

The ends of the spring arms 20 are each formed as a downwardly bent mounting portion 20a. Each attachment portion 20a is received in a receiving hole 4a at each end portion of a lining carrier plate 4 from the upper side. The spreader 8 transmits its expansion forces in this way between each attachment portion 20a in the associated receiving hole 4a on the respective lining carrier plates 4th

FIG. 28 shows an exemplary embodiment in which the retaining bow 21 is C-shaped as in the embodiments according to FIGS. 26 and 27. The spring arms 20 have spring ends 300 according to FIG. In addition, the spring arms 20 are arranged in pairs in the transverse direction of the opening 41. Each pair of spring arms 20 are connected at their other ends by a respective hood connector 202. Each bonnet connector 202 has a receiving opening pointing downwards toward the brake disk 2 in the longitudinal direction of the central portion 26a of the retaining bow 21, which communicates with the outer contour of the central portion 26a of the retaining bow 21. The pair of spring arms 20 connected in each case to a hood connector 202 are applied with their respective hood connector 202 to the central portion 26a of the retaining bow 21 from above such that the central portion 26a is received in the receiving openings of the hood connector 202. men is. The hood connectors 202 are arranged at a distance 203 from one another.

The central portion 26a of the retaining bow 21 is also provided at its ends in the respective transition to the respective center leg 26, each with a widening 26b. Each widening 26b forms an axial stop for the associated hood connector 202 on the central portion 26a in each case in the direction of the respectively adjacent tie rod 1 c out. FIG. 29 shows a disk brake 100 in a perspective illustration with the brake disk 2 and the brake disk rotation axis 2 a.

A rotary arrow about the brake disk axis of rotation 2a indicates a main direction of rotation for forward travel of a vehicle to which the disk brake 100 is assigned. With respect to the main direction of rotation of the brake disc 2, an inlet side ES and opposite an outlet side AS are fixed to the disc brake 100. Accordingly, the brake carrier horns 25 are called on the inlet side ES inlet side Bremsträgerhörner 25 and on the outlet side AS outlet side brake carrier horns 25.

In this embodiment, the spreader 8 is constructed substantially like the spreader 8 of the embodiment of FIG. A difference from the exemplary embodiment according to FIG. 28, however, is that in FIG. 29 the hood connectors 202 on both sides of the retaining bow 21 are connected by a respective longitudinal connector 202a. In addition, here the tie 21 has no broadening 26b.

In preferred embodiments, a length of the spring arms 20 taken together in the longitudinal direction of the opening 41 corresponds to approximately 60 to 95% of a lining shaft length, particularly preferably 70 to 80% of a lining shaft length. Under the lining shaft length is the distance of the associated Bremsträgerhörner 25 to understand.

The spreading device 8 comprises two spreading elements, wherein in a preferred embodiment, a first spreading element comprises two spring arms 20, which in

Longitudinal direction of the opening 41 are connected and act on the first brake pad 3. A second expansion element with two further spring arms 20, which are also connected in the longitudinal direction of the opening 41 and act on the second brake pad 3. The two spreading elements are centered (in relation to the brake carrier hearing ner 25) connected to each other. Thus, a - in a small tolerance range - the same spring force can be ensured both inlet side and outlet side. Different spring forces between outlet side AS and inlet side ES, which can lead to oblique wear, are minimized by the one-sided attack of one spring arm 20 per brake pad

A uniform force application of the spring arms 20 on the reaction side and on the reaction side, or on the side of the application section 1 a (pressure piece side) and the side of the saddle back 1 b (saddle side), by a flexible adjustment of the center web, i. of the tether 21, be realized. Furthermore, low geometric misalignments of brake disk 2, friction lining 5 and lining carrier plate 4 can be compensated by the flexible central web.

The spreader 8 can be easily positioned as an active return device (ACR) and held down by the pad retainer 28 through the central web. Advantageously, the spreader 8 can be easily removed and replaced in a pad change.

By exploiting the entire lining shaft length between the Bremsträ- horns 25 spreading elements or spring arms 20 can be used with a very low spring rate to apply substantially constant forces in pad wear. Due to the long spring travel, the spring arms 20 can be tolerant with respect to spring forces. The spring travel leads to a constant spring rate with low tolerances

In a preferred embodiment, only two springs are used.

The spreading elements, i. the spring arms 20 can be formed from inexpensive and geometrically flexible sheets.

Due to the offset with different pivot points, a lower spring rate can be imaged (see FIGS. 2, 23 and 24). Advantageously, only a small number of turns is necessary.

The invention is not limited by the embodiments described above. It is modifiable within the scope of the appended claims. LIST OF REFERENCE NUMBERS

1 caliper

1 a Zuspannabschnitt

1 b Saddleback

1 c tension strut

2 brake disc

2a brake disc rotation axis

3 brake pad

4 lining carrier plate

4a receiving hole

5 friction lining

6 brake carrier

7 pad retaining spring

7a clamp element

8 spreading device

9 band spring

10 slot

1 1 tab

1 1 a pressure section

12 straps

13 fuse

14 spring clip

14a fixing end

15 suspension

15a, 15b longitudinal side

15c mounting hole

16 scissor link

17 leaf spring

18 spring legs

19 attachment

20 spring arm

20a attachment section

21 tie

22 plant leg

22a attachment end

23 Dom

24 temples

25 brake carrier horn 25a hole

26 middle thighs

26a central section

26b broadening

27 end legs

27a attachment section

28 lining retainer

29 tab

30 cones

31 support legs

31 a support section

32 pinch legs

32a plant section

32b support section

33 mother

34 supporting strap

35 pen

36 support surface

37 connecting bar

38 spring bar

39 angle bracket

40 retaining plate

41 opening

42 basic section

43 connecting section

44 support section

45 contact surface

46 bearing surface

100 disc brake

150 connection

151, 152 bearings

200 connecting section

201 recess

202 hood connector

202a longitudinal connector

203 distance

220 connecting bow

300 spring end

301 slot 302 movement 303 contact surface 304 projection

305 contact surface 306 angle

Claims

claims

1 . Disc brake (100) for a commercial vehicle, having a brake caliper (2), designed as a sliding caliper (1), which is fixed to a stationary brake carrier (6) and has a central opening (41) above the brake disc (2), two in the brake caliper (1) arranged, in opposite directions, each having a lining carrier plate (4) and a friction lining (5) mounted thereon brake pads (3), one of which anionseitigiger means of an application device via at least one brake pad against the brake disc ( 2) is pressable, as well as at least one

Rear part device, with which the brake caliper (1) is traceable after a brake-induced displacement and release of the brake, wherein the Rückstelleinrich- direction on the opposite brake pads (3) acting opposite to the respective application direction equally acting spreader (8) with at the respective Pad carrier plate (4) has attacking resilient spreading elements,

characterized in that

the spreading device (8) in the central opening (41) is arranged, wherein the spreading directly or indirectly outside of the friction linings (5) on one side in the central region or at least two spaced apart from each other to the center bearing areas of the brake pads (3) attack, the investment areas each have a contact surface (45, 303) and a support surface (46, 305), on which the spreading elements are arranged to be movable.

2. Disc brake (100) according to claim 1,

characterized in that

Starting from a central region in the middle of the opening (41), the spreading elements extend from the inside to the outside to the contact areas which are arranged at a distance from one another in the center.

3. Disc brake (100) according to claim 2,

characterized in that

Starting from a central region in the middle of the opening (41), the spreading elements extend from the inside to the outside to the abutment areas, which are arranged uniformly spaced from one another in the middle.

4. Disc brake (100) according to claim 2 or 3,

characterized in that the central region of the opening (41) on both sides of a virtual center of the opening (41) extends approximately parallel to the plane of the brake disc (2) in a length in a range of 30 to 50% of a longitudinal axis of the opening (41).

5. Disc brake according to one of the preceding claims,

characterized in that

the spreading device (8) has spring arms (20), two of which abut each other on an associated lining carrier plate (4), wherein the spring arms (20) in the central region of the opening (41) are interconnected.

6. Disc brake according to claim 5,

characterized in that

the spring arms (20) are connected to a retaining bow (21) which is attached to the brake carrier (6).

7. Disc brake according to claim 6,

characterized in that

the retaining bow (21) is connected to two opposite brackets (12) connected to the brake carrier (6).

8. Disc brake according to claim 6,

characterized in that

the retaining bow (21) is connected to two, a lining shaft limiting Bremsträger- horns (25), wherein the retaining bow (21) is C-shaped with two opposite end legs (27) and a center leg (26).

9. Disc brake according to claim 8,

characterized in that

the end legs (27) each have a tab (29) into which pins (30) of the brake carrier horns (25) are inserted.

10. Disc brake according to one of claims 5 to 9,

characterized in that

the spring arms (20) and / or the retaining bow (21) in the radial direction on the brake carrier (6) are supported.

1 1. Disc brake according to one of claims 5 to 10, characterized in that

each spring arm (20) is formed with a fork-shaped spring end (300) at the end, forming a support leg (31) and a pressure leg (32), the support leg (31) being supported on a bearing surface (305) of a narrow side of the lining carrier plate (4) ) is movable and the Andruckschenkel (32) with pressure on a contact surface (303) of the friction lining (5) facing side of the lining carrier plate (4) is movable.

12. Disc brake according to claim 1 1,

characterized in that

the support surface (305) is disposed at an angle (306) to a horizontal, the angle (306) being in a range of 3 to 15 °.

13. Disc brake according to claim 1 1 or 12,

characterized in that

the abutment surface (305) protrudes from the lining carrier plate (4) or is molded into the lining carrier plate (4).

14. Disc brake according to one of claims 1 1 to 13,

characterized in that

a protrusion (304) is provided on the abutment surface (303), the protrusion (304) protruding from the abutment surface (303) into a slot (301) between the support leg (31) and the presser leg (32).

15. Disc brake according to one of claims 5 to 10,

characterized in that

each spring arm (20) is formed at the end with a spring end (300) with a pressure leg (32), wherein the pressure leg (32) is in contact with a support section (44) of the side facing the friction lining (5) of the lining carrier plate (4), wherein the Andruckschenkel (32) with a contact portion (32a) with pressure on a contact surface (45) of the support portion (44) of the lining carrier plate (4) is movable and at the same time with a support portion (32b) on a support surface (46) of the support portion (44 ) of the lining carrier plate (4) rests movably.

16. Disc brake according to claim 15,

characterized in that

the support portion (44) with the contact surface (45) and the support surface (46) is formed in the lining carrier plate (4).

17. Disc brake according to one of claims 5 to 16,

characterized in that

the spring arm (20) in the contact area on the lining carrier plate (4) is convexly shaped on the side facing the contact surface.

18. Disc brake according to one of claims 5 to 17,

characterized in that

at least one of the brake pad (3) associated spring arms (20) end one on the pad carrier plate (4) adjacent spring bar (38) and a connecting web (37) which is connected to the brake carrier (6), preferably the Bremsträgerhorn (25).

19. Disc brake according to one of claims 1 to 4,

characterized in that

the resilient spreading elements consist of two band springs (9) assigned to one of the two brake linings (3), which are held at the ends with brackets (12) connected to the brake carrier (6) and in the center area in a form-fitting manner in a pad retaining spring (7) of the brake pad (7). 3) intervene.

20. Disc brake according to claim 19,

characterized in that

the band springs (9) are each provided with a bearing bracket (24) directed towards the lining carrier plate (4), which bears against a bearing (19) of the lining carrier plate (4).

21. Disc brake according to claim 19 or 20,

characterized in that

the band springs (9) are axially secured or slidably held on the brackets (12).

22. Disc brake according to one of claims 1 to 4,

characterized in that

the spreader (8) has intersecting spring legs (18) which are non-rotatably attached to the retaining bow (21) and which abut with their adjacent free ends on the lining carrier plate (4) centrally.

23. Disc brake according to one of claims 1 to 4,

characterized in that the spreading device (8) has two leaf springs (17) which are fastened at one end to a bracket (12), while at the other end respectively scissor members (16) are held, which are connected to the lining carrier plate (4).

24. Disc brake according to claim 23,

characterized in that

the leaf springs (17) are deformed radially outwardly during application of the brake.

25. Disc brake according to claim 1 or 2,

characterized in that

on the lining carrier plates (4) on the mutually facing sides at least one resilient abutment limb (22) is applied, which is loop-shaped and fixedly connected to a bracket (12).

26. Disc brake according to claim 1 or 2,

characterized in that

each spreading device (8) consists of a spring clip (14) connected against rotation on the rear side of the lining carrier plate (4) facing away from the friction lining (5) and an abutment leg (22), which are supported on the brake carrier (6).

27. Disc brake according to claim 26,

characterized in that

the spring clip (14) and the bearing limb (22) in a suspension (15) of the lining carrier plate (4) are held, wherein in longitudinal extension of the lining carrier plate (4) the attachment ends of the spring clip (14) and the abutment leg (22) are offset from one another ,

28. Brake pad set for a disc brake (100) according to any one of the preceding claims, comprising at least two brake pads (3) each having a lining carrier plate (4) and on the lining carrier plate (4) mounted friction lining (5) and a spreading device (8) after a of the preceding claims,

characterized in that

the lining carrier plates (4) outside the friction linings (5) are arranged on one side in the center region or at least two at a distance from one another to the middle Investment areas each have a contact surface (45, 303) and a support surface (46, 305).

29. Brake pad set according to claim 28

characterized in that

the support surface (305) of the abutment regions is disposed at an angle (306) to a horizontal, the angle (306) being in a range of 3 to 15 °.

30. brake pad set according to claim 29,

characterized in that

31. Brake lining set according to claim 29 or 30,

characterized in that

a protrusion (304) is provided on the abutment surface (303), the protrusion (304) protruding from the abutment surface (303).

32. Brake pad set according to claim 28,

characterized in that

the abutment areas have a support portion (44) which is formed with the contact surface (45) and the support surface (46) in the lining carrier plate (4).

33. Brake pad set according to claim 32,

characterized in that

the contact surface (45) to the side surface of the lining carrier plate (4), which is provided with the friction lining (5) offset in the direction of the friction lining (5) pointing away