HK1261553B

HK1261553B - Disc brake and brake pad set

Info

Publication number: HK1261553B
Application number: HK19121396.6A
Authority: HK
Inventors: J·施罗普; M·舍瑙尔; W·帕勒; M·巴特尔; T·费施尔; J·鲍姆加特纳; A·佩特施克; M·博希曼; R·L·兰茨; R·S·泰凯斯基
Original assignee: 本迪克斯·斯派塞基金会布雷克有限公司; 克诺尔商用车制动系统有限公司
Priority date: 2016-03-03
Filing date: 2017-02-27
Publication date: 2021-06-25

Description

Disc brake and brake lining set

Cross Reference to Related Applications

This application claims priority to U.S. application No. 15/059,817 filed on 3/2016, a continuation-in-part application to U.S. application nos. 14/939,735 and 14/939,748 filed on 12/11/2015, the entire disclosures of which are expressly incorporated herein by reference.

Technical Field

The present invention relates to a disc brake. The invention also relates to a brake lining set for a disc brake.

Background

Such disk brakes are used in particular in commercial vehicles and are usually provided with pneumatic actuators. One exemplary embodiment of a brake caliper of such a disc brake is designed as a disc brake caliper and is used, for example, in a compact installation space.

The brake caliper is usually connected to a so-called brake carrier via two support columns which are designed as a fixed bearing and a loose bearing. The brake linings of the disc brake are displaceably guided in the brake carrier and are held in a lining groove in the brake carrier by means of a lining retainer bracket in a spring-loaded connection.

In the case of disc brakes, in particular with disc brakes having only one force introduction element, this design can lead to uneven wear of the brake linings. The brake lining may develop wear in the radial direction which is not parallel with respect to the plane through which the lining carrier plate passes, and on the other hand may also develop wear in the circumferential direction. This is referred to as radial wear and tangential wear, respectively.

An example of a spring-loaded lining retainer bracket is described in german patent document No. DE 202008013446U 1.

Brake lining retainer systems are disclosed in international patent document No. WO 2013/143993 a1, german patent document No. DE 102012002734 a1 and US patent No. US 8,540,061B 1.

In the context of these solutions, there is still a constant need for brakes and brake components having a longer service life and at the same time having reduced costs.

Disclosure of Invention

It is therefore an object of the present invention to construct an improved disc brake.

Another object is to provide an improved brake pad set for a disc brake.

These and other objects are achieved by the present invention by a disc brake for a vehicle, in particular for a commercial vehicle, comprising: a brake disc having an axis of rotation; at least one brake lining on the clamping side and at least one brake lining on the rear side; a brake carrier which holds at least two brake linings in a respective lining groove in which the at least one brake lining on the clamping side is held in a positive-fit manner; brake caliper, designed as a disc brake caliper and extending beyond a brake disc, wherein the brake lining on the clamping side is provided with at least one lining retention spring which is supported at least on a brake carrier saddle corner of a lining groove of the brake carrier and exerts a radially outwardly acting tension force on the brake lining.

This radially outwardly acting tension makes it possible for the brake lining to be drawn into its form-fitting holder, thereby advantageously allowing a reduction in tangential wear.

The tensioning force can be generated by an advantageously simple arrangement by means of at least one lining retaining spring which is supported on the brake carrier saddle of the lining slot after the brake lining has been installed.

In addition, there is the advantage that the lining retainer spring is no longer supported on the lining retainer carrier and the brake lining with the lining back plate can no longer strike the lining retainer spring. Therefore, damage to the wafer retaining spring can be reduced and the service life thereof can be increased.

In one embodiment, the at least one brake lining on the clamping side engages in a form-fitting manner with a lining back plate in a lining groove of the brake carrier, which lining back plate has the contour of the brake carrier saddle angle. This advantageously makes it possible to fix the brake lining on the clamping side in both radial directions relative to the axis of rotation of the brake disk.

In another embodiment, the contour of the brake carrier saddle angle is configured to correspond to the contour of the lining back plate, wherein the undercut surfaces of the contour of the brake carrier saddle angle each engage the undercut surfaces of the projections on the lining back plate without play. Wear can thus be further reduced.

In another embodiment, the at least one pad retaining spring is mounted on the pad backing plate. This results in a compact brake lining.

The at least one lining retention spring can be mounted on the top side of the lining back plate, which allows space saving.

A further embodiment provides that the at least one lining retention spring comprises a central section, an arm, a pressure section and a transition section, wherein the central section is mounted on the top side of the lining back plate, the transition section is seated on the top side of the lining back plate, the pressure section projects laterally away from the lining back plate, and each pressure section is located on one end of the top side of the lining back plate. Thus, a simple and effective pretensioning of the pad holding spring can be produced. The lining retaining spring can be, for example, flat spring steel, from which a stamped and bent part is produced.

In an alternative embodiment, the at least one lining retention spring has a central section, which is mounted on the lining carrier by means of at least one mounting element, an arm, a pressure section, which projects laterally from the lining carrier, and a central section, one pressure section being provided on each end of the top side of the lining carrier. This advantageously makes it possible to use the available fastening elements with only minor modifications or without any modifications at all.

For this purpose, the at least one fastening element can be designed like a clip and can have a cross section which, in the installed state of the lining retaining spring, extends through an opening in the lining carrier, so that the lining retaining spring is arranged between the at least one fastening element and the top side of the lining carrier. This is advantageous because the lining retaining spring is in this way located in a captive mount on the lining back plate of the brake lining. Another advantage is the play of the central part of the lining retaining spring between the fastening element and the lining back plate, so that a uniform loading of the lining retaining spring can be achieved.

In another embodiment, the lining retention spring has at least one slit through which a section of the at least one fastening element extends. Thus, for example, existing press tools can be used for the slits in the lining retention spring. Further, the captive mount may be located between the patch retention spring and the fastening element.

According to a further embodiment, the lining retention spring has at least one additional slit through which the guide projection of the lining back plate extends. In this way, the lining retainer spring can advantageously be held on the top side of the lining carrier, so that the lining retainer spring is centered on this top side and is guided in its possible longitudinal movement in order to maintain contact that ensures the pressure section with the brake carrier saddle.

When at least one of the pressure segments is supported on at least one brake carrier saddle angle of a brake carrier lining groove, advantageously simple tensile forces are generated on the brake lining and no additional measures are required on the brake carrier.

In an alternative embodiment, the at least one lining retention spring is mounted on the top side of the lining back plate by at least one spring retainer. This allows for an advantageous weight saving.

A further embodiment provides that the at least one spring retainer has at least one retaining element, wherein the at least one lining retaining spring is arranged between the at least one retaining element and the top side of the lining carrier and retains the pretensioning there. This achieves a simple means of generating the pretension.

In yet another embodiment, the at least one pad retention spring includes at least one central section, a transition section, at least one pressure section, and at least one bearing section.

Another embodiment provides that the at least one support section is seated on the top side of the lining carrier and the at least one pressure section projects laterally from the lining carrier on one end of the top side of the lining carrier. This achieves an advantageous compact design.

In order to achieve an advantageously simple means of generating a tensile force acting on the brake lining, the at least one pressure section is supported on at least one brake carrier saddle angle of a lining groove of the brake carrier.

In a further embodiment, the at least one holding element is designed as a roller, in particular as a cable roller. This roller design has the advantage of laterally guiding the pad retaining spring.

In a preferred embodiment, it is provided that the at least one lining retainer spring is made of spring wire. The lining retaining spring is therefore simple to manufacture.

Another preferred embodiment provides that the lining retention spring is arranged on each end of the top side of the lining back plate. This achieves improved tension generation.

In an alternative embodiment, the at least one lining retention spring is held and guided on the lining back plate. This enables a simple mounting of the lining retaining spring on the lining back plate.

It is also provided in one embodiment that the at least one lining retention spring comprises a central section, an arm and a pressure section, wherein the central section with the retention section and the connection section interacts with the fastening section of the lining back plate such that the fastening section on the one hand forms a fixation to the central section to prevent the central section and thus the lining retention spring connected to the central section from sliding laterally in the direction of the friction lining and on the other hand allows a further fixation of the central section and thus the lining retention spring connected to the central section in a radial direction away from the top side of the lining back plate such that the fastening section faces away from the central section and the lining retention spring. With the aid of these fixing, it is possible to pull the lining retaining spring of the brake lining radially upwards and at the same time prevent lateral sliding.

The fastening section with the lug can thus form an additional fastening of the central section and thus of the lining retaining spring connected to the central section in the radial direction. This is a simple design without any additional components.

It can be provided here that the fastening section projects away from the top side of the lining back plate, the lug being mounted on the upper edge of the fastening section and projecting as a projection toward the actuating side of the lining back plate. This also makes it possible to dispense with additional components.

Advantageously, the lug may be formed by manufacturing a profile, for example by machining a contact surface on the fastening section below the lug.

In one embodiment, the central section of the lining retention spring is in contact with the retention surface along the side edges of the retention section and along the side edges of the connecting section, wherein the side edges and the top side of the connecting section are in contact with the bottom and/or the end of the bottom side of the lug. In this way, the lining retainer spring can advantageously be inserted simply into the contour and/or under the lug.

If the lining retainer spring has at least one slit through which a guide projection on the lining back plate extends, the lining retainer spring is advantageously additionally secured against twisting about a vertical axis as well as about its longitudinal axis.

In another embodiment, the lining retention spring can have a recess and can therefore have its width reduced between the slits, at least the width of the central section. This enables a compact design.

If the pressure segments project laterally away from the lining back plate on each end of the top side of the lining back plate, this results in a compact design on the one hand and a simplified assembly on the other hand.

It is advantageous here if at least one of the pressure segments bears against at least one brake carrier saddle angle of a lining groove of the brake carrier, so that a tensile force acting on the brake lining is generated.

In a further alternative, it is provided that the at least one lining retainer spring is held in a form-fitting manner in the lining carrier. This advantageously allows tension to be maintained and introduced.

The at least one lining retention spring has: a central section with a holding section and two connecting sections; two arms; and two pressure segments, wherein the retaining segment is held in a form-fitting manner in a retaining opening in the lining carrier, and the two connecting segments are held in slots of the lining carrier. This is advantageous because, on the one hand, no additional holder is required and, on the other hand, the lining retaining spring can be mounted simply by simple insertion.

In one embodiment, the holding section has a circular cross section, the central axis of which is parallel to the axis of rotation of the brake disk and is designed like a pipe clamp with two connecting sections. This is simple to manufacture, for example, when the lining retainer spring is manufactured as a stamped/bent part.

Another embodiment provides that the holding opening is designed as a through opening or as a blind hole with a circular cross section or with a different cross section (for example, a triangular or polygonal cross section), wherein the holding opening is connected to the top side by a slit and is spaced apart from the top side of the fastening section in the radial direction by a distance. This allows for a simple and compact design without any additional components.

In another embodiment, the fastening section projects away from the top side of the lining back plate and is divided by a slit into two subsections with respective top sides. In this way, the central section of the lining retention spring is easily and securely retained on the lining backing plate.

If the lining retainer spring has a constant width over the entire length of the lining carrier, wherein the lining retainer spring protrudes beyond the lining carrier in the direction of the friction lining, the assembly can be simplified, since the pressure section of the lining retainer spring comes into contact with the brake carrier bracket pan first on installation of the brake lining due to the protrusion of the lining retainer spring. The brake lining is displaced into the brake carrier by the pretensioning of the brake lining on the lining retaining spring being generated by pressing on the brake lining.

An advantageous simple guidance and fastening of the lining holding spring on the lining carrier is made possible if the lining holding spring has at least one slit through which a guide projection on the lining carrier extends.

This also enables a compact design on the one hand and a simplified assembly on the other hand in this exemplary embodiment if the pressure segments each project laterally away from the lining carrier at each end of the top side of the lining carrier.

A further alternative embodiment provides that each spring retainer has a plate-shaped projection which extends away from the top side of the lining back plate and to which the at least one lining retaining spring is fastened. In this way, weight can be reduced and a compact design is made possible.

In one embodiment, the at least one lining retention spring is designed in the form of a hood, which results in an easy assembly.

In this regard, the at least one lining retention spring has a base plate, two fastening strips and a spring arm, each lining retention spring having a pressure section such that the at least one lining retention spring is mounted on the respective projection by means of the fastening strips. The lining retention spring can advantageously be easily manufactured as a stamped/bent part.

Advantageously, the at least one lining retainer spring is mounted on the respective projection in a form-fitting manner, since in this way it can be simply assembled and positioned on the projection.

This achieves the advantage of reliability, against losses, if the at least one lining retaining spring is mounted firmly and in a form-fitting manner on the respective projection. Such a positive fit and secure mounting may be established by, for example, riveting, bolting, etc.

In another embodiment, the spring arm of the at least one liner retention spring is secured to the base plate by a curved connecting section. This achieves the advantage of generating an additional spring force.

In addition, the curved connecting section can be matched to the shape of the contact surface of the projection, so that the connecting section can be supported in an advantageous and compact manner in the uninstalled state of the brake lining.

In a further embodiment variant, the at least one lining retainer spring can have at least one support section which is mounted on the base plate opposite the spring arm and has at least one support section on its underside, which is supported on the top side of the lining carrier plate. This makes it possible to prevent a rotational movement of the lining retainer spring about its mounting on the projection.

In yet another embodiment, the at least one pad retaining spring may be provided with at least one slit. This achieves the advantage that different spring forces can be obtained, which are required for different applications. This can also occur due to the fact that the at least one lining retention spring is provided with at least one reinforcing bead and/or at least one reinforcing rib. The reinforcing beads and/or ribs may be used alone or in combination with the at least one slit.

The at least one pressure section projects laterally away from the lining back plate at one end of the top side of the lining back plate and thus allows a compact design.

It is advantageous here if the at least one pressure section bears against at least one brake carrier saddle angle of a lining groove of the brake carrier, so that a tensile force acting on the brake lining is generated.

In a preferred embodiment, it is provided that the at least one lining retention spring is arranged on each end of the top side of the lining carrier.

A brake lining arrangement for a disc brake for vehicles, in particular for commercial vehicles, of the type mentioned above comprises at least one brake lining on the clamping side and at least one brake lining on the rear end. The brake lining on the clamping side has at least one lining retaining spring with at least one pressure section, wherein the at least one pressure section projects laterally below one end of the top side of the lining back plate of the brake lining on the clamping side.

Other objects, advantages and novel features of the invention will become apparent from the following detailed description of the invention when considered in conjunction with the drawings.

Drawings

Fig. 1 shows a schematic perspective view of a first embodiment of a disc brake according to the invention;

fig. 2-4 show schematic partial views of a brake bracket and a brake lining of the disc brake shown in fig. 1;

fig. 5-7 show schematic views of a brake carrier of the disc brake shown in fig. 1;

fig. 8-9 show schematic views of a second embodiment of the disc brake according to the invention;

fig. 10-11 show schematic partial enlarged views of the second embodiment shown in fig. 8-9;

fig. 12-13 show schematic partial views of a third embodiment of the disc brake according to the invention;

figure 14 shows a schematic perspective view of a backing plate of the brake lining according to the third embodiment of figures 12-13;

figure 15 shows a schematic perspective view of a lining retaining spring according to the third embodiment of figures 12-13;

figure 16 shows a schematic perspective view of a fastening element of a lining retaining spring of a brake lining according to the embodiment of figures 12-13;

fig. 17-18 show schematic partial views of a fourth embodiment of the disc brake according to the invention;

figure 19 shows a schematic perspective view of a lining backing plate of the brake lining according to the fourth embodiment of figures 17-18;

figure 20 shows a schematic perspective view of the lining retention spring according to the embodiment of figures 17-18;

fig. 21 shows a schematic partial view of a fifth embodiment of a disc brake according to the invention;

fig. 22-24 show schematic partial enlarged views of the fifth embodiment of the disc brake shown in fig. 21;

fig. 25 shows a schematic partial view of a sixth embodiment of a disc brake according to the invention;

FIG. 26 shows a schematic top view of a lining back plate of the brake lining of the sixth embodiment shown in FIG. 25;

FIG. 27 shows a schematic perspective view of the pad retaining spring of the brake pad shown in FIGS. 25 and 26;

FIG. 28 shows a schematic perspective view of the brake pad shown in FIGS. 25 and 26;

fig. 29 shows a schematic partial view of a seventh embodiment of a disc brake according to the invention;

fig. 30-31 show schematic, partial enlarged views of the seventh embodiment of the disc brake shown in fig. 29;

figures 32-33 show schematic perspective views of the pad retaining spring of the seventh exemplary embodiment of the disc brake shown in figure 29;

FIG. 34 shows a schematic view of a brake pad of a variation of the seventh embodiment shown in FIG. 29;

figures 35-36 show a schematic perspective view of a lining retention spring of a variation of the seventh embodiment shown in figure 34;

fig. 37 shows a schematic view of a brake lining according to a further variant of the seventh embodiment of the disc brake shown in fig. 29; and

figures 38-39 show schematic perspective views of the lining retention spring of this further variant of the exemplary embodiment shown in figure 37.

Detailed Description

Terms such as "upper", "lower", "right", "left", and the like relate to directions and arrangements in the drawings.

Fig. 1 shows a schematic perspective view of a first embodiment of a disc brake 1, for example an air disc brake 1, according to the invention. Fig. 2 to 4 show a schematic partial view of a brake carrier 5 of a disk brake 1 according to the invention, as shown in fig. 1, with a brake lining 3 according to the invention. For the sake of simplicity, fig. 1 does not show the brake disc 2, but it can be easily imagined by referring to fig. 9. Fig. 2 shows a plan view of the friction lining 3b of the brake lining 3 in the brake carrier 5. Fig. 3 shows the forces 11, 12 acting on the brake lining 3. Fig. 4 shows an enlarged view of the side of the brake lining 3 engaging the brake spider 5' a.

The disc brake 1 is part of a brake system of a vehicle, for example, in particular a commercial vehicle, and comprises a brake disc 2 with a rotational axis 2a of the brake disc and two brake linings 3 arranged on both sides of the brake disc 2. Of the two brake linings 3, only one so-called clamping-side brake lining 3 is shown. Another brake lining is easily imaginable. In addition, the disc brake 1 includes a brake bracket 5, a brake caliper 6, and a clamping device (not shown).

The brake lining has a lining back plate 3a to which a friction lining 3b is attached. The brake linings 3 are each accommodated in two brake bracket saddle angles 5a, 5' a of the brake bracket 5; 5b, 5' b and held in the brake support 5 in a lining groove 15, 16 (see also fig. 5, 6). A lining retainer bracket (not shown) is used to retain the brake lining 3. At least the brake linings 3 are displaceably guided in the respective lining grooves 15 in the direction of the axis of rotation 2a of the brake disk. It is assumed here that the brake disc 2 rotates in the forward travel of the vehicle about its brake disc axis of rotation 2a in the main direction of rotation 10 (fig. 3) when the respective vehicle travels in the forward direction. Thus, the side of brake caliper 6 located to the left in fig. 1 is referred to as the entry side, while the side of brake caliper 6 located to the right is referred to as the exit side. Thus, the brake bracket saddle angles 5'a, 5' b are referred to as brake bracket saddle angles 5'a, 5' b on the entry side, while the brake bracket saddle angles 5a, 5b on the opposite side are referred to as brake bracket saddle angles 5a, 5b on the exit side. Components and modules assigned to the entry side in the following are, unless otherwise indicated, characterized by an apostrophe following the corresponding reference numerals.

The brake caliper 6 is designed here as a sliding caliper and has a clamping section 6a and a rear section 6b which are connected to one another at each end in the direction of the axis of rotation 2a of the brake disk by a connecting section 6c, 6' c. The clamping section 6a and the rear section 6b are each arranged on and parallel to one side of the brake disk 2, wherein the connecting section 6c extends parallel to the axis of rotation 2a of the brake disk in the y-direction. The clamping section 6a and the rear section 6b together with the connecting section 6c form openings in the brake disk 2 with the brake linings 3 for access to these brake linings for installation, replacement and maintenance and repair work.

The clamping section 6a of the brake caliper 6 receives a clamping device of the disc brake 1. The clamping device is used for actuating the disc brake 1 and can have, for example, a brake rotary lever with a compression cylinder. This will not be further described here.

The side of the disc brake 1 on which the clamping section 6a of the brake caliper 6 and the clamping device are arranged is referred to below as the clamping side ZS. The other side of the disc brake 1, on which the rear section 6b of the brake caliper 6 is arranged, is referred to as the rear side RS, also referred to as the reaction side. These terms "clamping side" and "back side" and other designations referring to them are conventional and used for better orientation.

The brake lining 3 with the lining back plate 3a on the clamping side ZS is therefore referred to as the brake lining 3 on the clamping side, and the brake lining opposite it is correspondingly referred to as the brake lining on the rear side.

In a braking operation, the clamping device acts on the brake lining 3 on the clamping side with a clamping force in the direction of the axis of rotation 2a of the brake disc. A rear-side brake lining (not shown here but easily imaginable) is accommodated in the rear section 6b of the brake caliper 6 and, in this disc brake 1 with a brake caliper 6 in the sliding caliper embodiment, the rear-side brake lining has a relative movement with respect to the rear section 6 b.

The brake lining 3 on the clamping side is provided with a lining retention spring 7 on the top side 3d of the lining back plate 3 a. The lining retention spring 7 (fig. 2) comprises a central section 7a, arms 7b, 7' b, pressure sections 7c, 7' c and transition sections 7d, 7'd.

The central section 7a is fastened to the top side 3d of the lining back plate 3a approximately at the center of the top side 3d and extends in the longitudinal direction of the lining back plate 3d (i.e. parallel to the brake disc 2 in the mounted state of the brake lining 3) towards both sides, the length extending towards each side approximately corresponding to a quarter of the length of the lining back plate 3d in the longitudinal direction. The central section 7a may be fastened, for example, by welding, riveting, screwing, etc.

Mounted on each end of the central section 7a is a transition section 7d, 7'd by means of which one arm 7b, 7' b is connected to the central section 7 a. The transition sections 7d, 7'd are each designed with a curved shape, wherein they have a convex curvature towards the top side 3d of the lining back 3 a. In this way, the transition sections 7d, 7'd are each in linear contact with the top side 3d of the lining back 3 a. In this example, in the mounted state of the brake lining 3, the linear contact extends parallel to the axis of rotation 2a of the brake disc. Of course, other forms of contact are possible, such as single point contact, multi-line contact, and the like.

The convex transition sections 7d, 7'd span the central section 7a, so that they are pressed against the top side 3d by means of the spring force of the central section 7 a.

Each transition 7d, 7'd extends into a respective arm 7b, 7' b. Each arm 7b, 7' b extends as far as a respective end of the top side 3d of the lining back plate 3a and is in contact with it in its respective end when the brake lining 3 is not installed.

The pressure sections 7c, 7'c which are mounted on each free end of the arms 7b, 7' b and which project beyond the respective end of the top side 3d in the longitudinal direction of the lining back 3a are pressed against the top side 3d of the lining back 3a by the spring force of the central section 7a, the transition sections 7d, 7'd and the arms 7b, 7' b.

Each pressure segment 7c, 7' c is designed with a convex curvature such that its convex side faces downwards towards the lining back plate 3 a. The curvature of the pressure sections 7c, 7'c is smaller than the curvature of the transition sections 7d, 7'd.

In this example, the width of the lining retainer spring 7 is constant and corresponds here approximately to the thickness of the lining back plate 3 a. The width and thickness are in the direction along the axis of rotation 2a of the brake disc. Of course, the width of the lining retention spring 7a can also be different relative to the lining back plate 3a and/or can extend non-uniformly.

The lining groove 15 on the clamping side is delimited by the brake carrier saddle angles 5a, 5' a on both sides and is closed on its underside by the strut 5 d. Each brake spider 5a, 5'a has a lug 5c, 5' c with a rounded corner projecting inwardly into the lining groove 15 substantially at its center in a direction perpendicular to the axis of rotation 2a of the brake disc. Below each lug 5c, 5'c, an undercut 4, 4' is provided which is shaped outwards, i.e. extends in a plane parallel to the brake disc 2 away from the pad groove 15 into the respective brake carrier saddle corner 5a, 5'a and forms a contour with the lug 5c, 5' c. Each undercut 4, 4' extends below each lug 5c, 5' c, first parallel to the strut 5d into the respective brake carrier saddle 5a, 5' a. The corresponding contour then runs at right angles in the brake support saddle 5a, 5' a, down to a support which in turn runs at right angles to the inner side of the lining groove 15 over a distance which corresponds approximately to the length of the undercut 4, 4' below each lug 5c, 5' c. These supports are connected by a strut 5d, wherein the top side of the strut 5d is arranged deeper than the surface of the support, i.e. further towards the axis of rotation 2a of the brake disc.

Each side of the lining back plate 3a on the clamping side, which cooperates with the respective brake carrier saddle angle 5a, 5'a, also has a contour which corresponds to the respective contour of the respective brake carrier saddle angle 5a, 5' a. In other words, the shape of each lug 5c, 5'c is molded into the respective side of the lining back plate 3a, wherein a rectangular projection 3c, 3' c of the lining back plate 3a is formed, which corresponds to the respective undercut 4, 4 'of the brake bracket saddle corner 5a, 5' a. In this way, the brake lining 3 on the clamping side is held in a positive-fit manner in the contour with the lugs 5c, 5'c and the undercuts 4, 4' by its lining back plate 3a in the lining groove 15 on the clamping side, so that the brake lining 3 on the clamping side is displaceably guided in the direction of the axis of rotation 2a of the brake disk, but is fixed in the direction perpendicular to the axis of rotation 2a of the brake disk. Only the end regions of the bottom side of the lining carrier 3a on the clamping side rest on the respective supports at the ends of the struts 5 d.

In fig. 2, the brake lining 3 has been inserted into the lining groove 15 of the brake carrier 5. This is first carried out by inserting the brake lining 3 radially into the intermediate space between the lining grooves 15, 16 (fig. 5, 6).

During assembly, the lining retaining spring 7 is first supported on the brake carrier saddle 5a, 5'a on one side, so that the brake lining 3 can thereby be pushed into one of the undercuts 4, 4' of the brake carrier 5. The brake lining 3 is then fixed in the lining groove 15 of the brake carrier 5 and can be displaced into its operating position by means of the brake caliper 6 in the axial direction, i.e. in the direction of the axis of rotation 2a of the brake disk.

In this way, the lateral contour of the lining back plate 3a of the brake lining 3 engages and forms a form-fitting contact with the contour of the lugs 5c, 5'c and the undercuts 4, 4'. The convex sides of the pressure sections 7c, 7'c of the lining retaining spring 7 then come into contact along their contact sections 9, 9' in each case in order to rest on the support sections 8, 8 '(fig. 3) on the top sides of the brake carrier bracket saddles 5a, 5'. In this operation, the lining retaining spring 7 is supported here on the brake carrier saddle 5a, 5' a on the clamping side and is tensioned in the upward direction against the spring force of the lining retaining spring 7.

The lining retainer springs 7 tensioned on both ends in this way will exert a tensile force outwards in a radial direction away from the axis of rotation 2a of the brake disc. This results in play-free contact of the undercuts 14, 14' of the projections 3c, 3' c of the brake lining 3 on the undercut surfaces 13, 13' on the underside of the lugs 5c, 5' c of the brake bracket saddles 5a, 5' a.

In order to reduce the tangential wear (on the longitudinal side, i.e. on the long side of the brake lining 3), in particular in the single-punch embodiment of the disc brake 1, the friction force 11 is generated on the undercut surfaces 13', 14' on the entry side by the lever kinematics. This creates a torque about the pivot point 10a with the lever arm 11 a. The pivot point 10a is here located at the point of contact between the upper corner edge of the projection 3a on the departure side and the lower corner edge of the lug 5c of the brake bracket saddle 5a on the departure side and between the undercut surfaces 13 and 14.

This torque counteracts the entry torque (force 12 times lever arm 12a, which is known to have the effect of allowing greater wear of the entry side of friction lining 3b as a result of lining back plate 3a of brake lining 3 bearing on brake carrier saddle 5a on the exit side) and thus compensates for a part of the (tangential) lining wear.

To optimize the exploitation of this effect, the undercut surfaces 13, 14; 13', 14' are designed such that they engage without play in the mounted state of the brake lining 3.

Fig. 5 to 7 show schematic views of the brake carrier 5 according to fig. 2 to 4 of the disc brake 1 according to the invention as shown in fig. 1.

Fig. 5 shows a perspective view of the brake carrier 5 from the clamping side ZS (fig. 1) with a view of the fastening side 5e of the brake carrier 5. The lining groove 15 on the clamping side can be clearly seen, with the brake carrier saddle 5a, 5'a and the lugs 5c, 5' c projecting into the lining groove 15. The rear lining slot 16 has brake carrier saddle corners 5b, 5' b without lugs, which are connected by a strut 5f parallel to the strut 5 d.

Fig. 6 shows the undercut 4 on the exit side in an enlarged perspective view.

Fig. 7 shows a top view of the fastening side 5e of the brake bracket 5. The brake carrier 5 is mounted with its fastening side 5e on a stationary fastening section of the vehicle provided for this purpose.

Fig. 8 and 9 show a schematic view of a second embodiment of the disc brake 1 according to the invention, wherein fig. 8 shows a partial sectional view, wherein the section through the brake carrier 5 is in a plane parallel to the brake disc plane. Fig. 9 shows a perspective view of a second embodiment of the disc brake 1. Fig. 10 and 11 show schematic, partially enlarged views of a second embodiment of the disc brake 1 according to the invention shown in fig. 8 to 9.

In this second embodiment, the components of the disc brake 1 are the same as those in the first embodiment, except for the brake lining 3. Therefore, only the differences in the brake lining 3 are discussed in the remaining text.

In this exemplary embodiment, the brake lining 3 on the clamping side also has a lining carrier 3a with a friction lining 3 b. The lining back 3a is provided with a contour which corresponds to the contour of the lugs 5c, 5'c and the undercuts 4, 4'. This has been described above in connection with the first embodiment.

The lining carrier 3a is designed in its side region on the top side 3d with a spring retainer 17, 17 'for each of the at least one lining retaining spring 70, 70'. Each spring retainer 17, 17 'comprises a projection 17a, 17' a which projects upwards away from the lining back plate 3 a. Each of the projections 17a, 17' a is plate-shaped and projects upward by approximately twice the thickness of the lining back plate 3 a. The extent of each projection 17a, 17' a in the longitudinal direction of the lining back 3a likewise corresponds approximately to twice the thickness of the lining back 3 a. Each tab 17a, 17' a is arranged offset in its longitudinal direction from each side of the lining back plate 3a towards the center by a distance which corresponds approximately to the thickness of the lining back plate 3 a.

The rear surface of each projection 17a, 17' a facing the grip side ZS is flush with the rear surface of the lining back plate 3a facing the grip side ZS.

A holding element 18, 18 'is mounted at the center of the side of each projection 17a, 17' a facing the friction lining 3 b. In this embodiment, the holding element 18, 18' is a fixedly mounted roller, or such that it can rotate about an axis parallel to the brake disc axis 2 a. For example, the roller can be designed as a cable roller. The top side 3d of the lining back 3a is provided in the region below each retaining element 18, 18' with an arc-shaped depression which corresponds to the diameter of the roller of the retaining element 18, 18' and with which each retaining element 18, 18' is arranged at a distance.

The lining retaining springs 70, 70' are arranged between each retaining element 18, 18' and the top side 3d of the lining back plate 3a and are pretensioned due to their shape and arrangement between each retaining element 18, 18' and the respective recess of the top side 3 d. This pretensioning brings each lining retaining spring 70, 70' into contact with the top side 3d of the lining carrier 3a at one end, wherein the other end projects in the longitudinal direction of the lining carrier 3a beyond the respective end of the top side 3d and rests in the pretensioned manner on this end of the top side 3d in the uninstalled state of the brake lining 3.

Each lining retention spring 70, 70' comprises a central section 70a, transition sections 70b and 70c, at least one pressure section 71, 71' and at least one bearing section 72, 72 '.

The pad holding spring 70 on the leaving side is described below. The design of the lining retainer spring 70' on the entry side is embodied in mirror image.

A transition section 70b, 70c is mounted on each end of the central section 70 a. The transition section 70b faces one end of the top side 3d of the lining backing 3a and connects the central section 70a to the pressure section 71. A transition section 70c is mounted on the other side of the central section 70a, facing the center of the top side 3d and connecting the central section 70a to the bearing section 72. Each transition section 70b, 70c is shaped with respect to the top side 3d such that the transition section curves towards the top side.

The pressure section 71 has a contact section 9 on the underside of its free end, which in the installed state of the brake lining 3 rests on the support section 8 of the brake carrier bracket angle 5 a. When the brake lining 3 is not installed, the pressure section 71 rests on one end of the top side 3d of the lining back plate 3 a.

The bearing section 72 has a support section 72a on the underside of its free end, which always makes contact with the top side 3d of the lining carrier 3 a.

The central section 70a is arranged between the retaining element 18 and the depression in the top side 3d of the lining carrier 3a located therebelow, wherein the central section 70a is not in contact with the top side 3 d. This can be achieved by the recess and by designing the holding element 18 as a cable roller.

The transition sections 70b, 70c straddle the central section 70a, so that the pressure section 71 is pressed by the spring force of the central section 7a onto the end of the top side 3d or onto the brake spider 5 a. At the same time, the central section 70a straddling in this way causes the bearing section 72 to also be pressed against the top side 3 d.

In this example, the pad retaining springs 70, 70' are made of spring wire material. Here, the ends are correspondingly bent to form the pressure sections 71, 71 'and the bearing sections 72, 72'. This achieves point-like and arc-like contact sections with the respective support surface.

The brake lining 3 is assembled as described in the first embodiment.

Fig. 12-13 show schematic partial views of a third embodiment of the disc brake 1 according to the invention, wherein fig. 12 shows a view of the actuation side 3j of the lining backing plate 3 from the clamping side ZS (fig. 1). Fig. 13 shows a view from the brake disc 2. Fig. 14 shows a schematic perspective view of the lining backing plate 3a of the brake pad 3 according to the third embodiment of fig. 12-13 on the actuation side 3 j. Figure 15 shows a schematic perspective view of the lining retention spring 7 according to the exemplary embodiment of figures 12-13. Fig. 16 shows a schematic perspective view of the fastening element 20 of the brake lining 3 according to the embodiment of fig. 12-13 of the lining retention spring 7 according to fig. 15.

In this third embodiment, the components of the disc brake 1 are the same as those in the first embodiment except for the brake lining 3. Therefore, only the differences in the brake lining 3 will be discussed in the further discussion.

In this exemplary embodiment, the brake lining 3 on the clamping side also has a lining carrier 3a with a friction lining 3 b. The lining back 3a is provided with the profiles already described above, which correspond to the profiles of the lugs 5c, 5'c and the undercuts 4, 4'.

In contrast to the first embodiment, the lining retention spring 7 is fastened at its center to the fastening section 3f by means of a fastening element 20. The fastening element 20 is described in more detail below.

In this third embodiment, the pad holding spring 7 includes a central section 7a, arms 7b, 7' b, pressure sections 7c, 7' c, and intermediate sections 7e, 7' e.

The central section 7a is provided with a slit 7f extending in the longitudinal direction of the lining retention spring 7 to receive a section of the fastening element 20. The slit 7f does not extend on the imaginary center line of the lining holding spring 7, but extends offset in a direction toward the friction lining 3b in parallel to the imaginary center line of the lining holding spring 7. This imaginary centre line extends in the longitudinal direction of the lining retention spring 7.

Compared to the first embodiment, the length of the central section 7a corresponds approximately to half the length of the central section 7a of the lining retention spring 7 of the first embodiment.

An arm 7b, 7' b is mounted at each end of the central section 7 a. The arms 7b, 7' b are much longer than the arms of the first embodiment, e.g. approximately twice the length of the central section 7 a.

Each arm 7b, 7'b is provided with a slit 7g, 7' g in the region of its free end. Each slit 7g, 7'g is for receiving a guiding protrusion 3g, 3' g.

The pressure sections 7c, 7' c are mounted on each free end of the arms 7b, 7' b by intermediate sections 7e, 7' e. Here, each intermediate section 7e, 7' e is folded from the respective arm end downwardly towards the top side 3d of the lining back 3a at an obtuse angle. Thus, each pressure section 7c, 7'c is folded upwards in opposite directions on the respective free end of the intermediate section 7e, 7' e. The pressure segments 7c, 7'c each extend laterally on the lining carrier 3a and project away from the lining carrier by a distance which corresponds approximately to the extent of the respective brake carrier saddle 5a, 5' a in the longitudinal direction of the lining carrier 3 a.

The fastening section 3f projects away from the top side 3d of the lining carrier 3a and has a complete opening 19 which extends through the lining carrier 3a in the direction of the axis of rotation 2a of the brake disk. On the side of the lining back 3a on which the friction lining 3b is mounted, the friction lining 3b is recessed into the area below and in the vicinity of the opening 19, as can be seen clearly in fig. 13.

The fastening element 20 (see fig. 16) is here designed in the form of a clip and comprises a plate 20a on each of whose longitudinal sides a trapezoidal side wall 20b, 20c is mounted, each of which is substantially at right angles. The trapezoidal side walls 20b, 20c extend in parallel and are connected at their short undersides by a transverse section 20 d. The transverse section 20d is mounted at right angles to one side wall 20b and is connected to the underside of the other side wall 20c at a connection 20e, for example a weld. The transverse section 20d extends parallel to the plate 20a and in the assembled state of the lining retaining spring 7 extends through the opening 19. The connection portion 20e is formed after the assembly.

In the assembled state, the one trapezoidal side wall 20b is guided through the slit 7f extending in the longitudinal direction of the lining retainer spring 7. The wider longitudinal section of the central section 7a of the lining retention spring 7 is arranged with play in the radial direction from the axis of rotation 2a of the brake disc between the side walls 20b, 20c and between the underside of the plate 20a and the top side 3d of the fastening section 3f of the lining back plate 3 a.

In the assembled state of the lining retention spring 7 assembled on the top side 3d of the lining back plate 3a, the guide projections 3g, 3' g each extend through a slit 7g, 7' g in the lining retention spring 7 and project away from the top side of each arm 7b, 7' b. As already described above, the contact sections 9, 9' on the underside of the pressure sections 7c, 7' c of the lining retaining spring 7 each come into contact with the respective support section 8, 8 '.

In this embodiment, the lining backing plate 3a also has upper chamfered corner sections 3e, 3'e, each having a chamfer 3i, 3' i. Each chamfer 3i, 3' i extends via a recess 3h, 3' h into a guide projection 3g, 3' g and into the top side 3d of the lining back plate 3 a. The depressions 3h, 3' h extend first in straight sections from the respective chamfers 3i, 3' i, which then have a curvature that transitions into the respective guide projections 3g, 3' g and top side 3 d.

Fig. 17-18 show a schematic partial view of a fourth embodiment of the disc brake 1 according to the invention, wherein fig. 17 shows a view of the actuation side 3j of the lining backing plate 3 from the clamping side ZS (fig. 1). Fig. 18 shows a view of the lining back plate 3a without the friction lining 3b, viewed from the brake disk 2. Fig. 19 shows a schematic perspective view of the lining backing plate 3a of the brake lining 3 according to the fourth embodiment of fig. 17-18, seen from the friction lining 3b side. The friction lining 3b is not shown here but is easily imaginable. Figure 20 shows a schematic perspective view of the lining retention spring 7 according to the embodiment of figures 17-18.

In contrast to the third exemplary embodiment, the lining back 3a does not have a fastening section 3f with an opening 19, but rather has a top side 3d which is continuous between the guide projections 3g, 3' g. In this fourth embodiment, two openings 19, 19 'are provided, each arranged in the vicinity of the guide projection 3g, 3' g. The distance of these openings 19, 19 'from each other is smaller than the distance of the guide projections 3g, 3' g from each other.

In the end region of the central section 7a, in contrast to the third embodiment, the lining retention spring 7 of the fourth embodiment is fastened to the lining back plate 3a by means of fastening elements 20, 20'. The fastening elements 20, 20' are designed in the same way. A description of this has been given above.

The pad holding spring 7 in this third embodiment includes a central section 7a, arms 7b, 7' b, pressure sections 7c, 7' c, and intermediate sections 7e, 7' e.

The central section 7a is provided with a slit 7f, 7'f for receiving a section of the respective fastening element 20, 20', which slit extends in the longitudinal direction of the lining retention spring 7, as described above.

Compared to the third embodiment, the length of the central section 7a corresponds approximately to three times the length of the central section 7a of the lining retention spring 7 of the third embodiment and is slightly shorter than the distance between the guide projections 3g, 3' g.

On each end of the central section 7a an arm 7b, 7' b is mounted. The arms 7b, 7'b are each approximately half the length of the arms 7b, 7' b in the third embodiment.

Each arm 7b, 7'b is provided with a slit 7g, 7' g in the region of its free end. The slits 7g, 7'g are each for receiving a guide projection 3g, 3' g.

The pressure sections 7c, 7' c are mounted on each free end of the arms 7b, 7' b by means of intermediate sections 7e, 7' e, as already described in connection with the third embodiment.

The lining retention spring 7 is mounted on the lining back 3a by means of fastening elements 20, 20' in such a way that the distance of the central section 7a from the top side 3d of the lining back 3a is substantially constant.

The brake pad set has at least one brake pad 3 on the clamping side and at least one brake pad on the rear side. These brake linings can also have different lengths.

Fig. 21 shows a schematic partial view of a fifth exemplary embodiment of a disc brake 1 according to the invention, viewed from the direction of the clamping side ZS towards the actuating side 3j of the brake lining 3 on the clamping side.

Fig. 22-25 show schematic partial enlarged views of the fifth embodiment of the disc brake according to the invention shown in fig. 21. Fig. 22 therefore shows the central upper section of the lining back plate 3a with a holder for the lining retaining spring 7. Fig. 23 shows one end on the entry side of the lining retainer spring 7, for example similar to that shown in fig. 4. Finally, fig. 24 shows the end according to fig. 23 on the entry side, viewed from the top.

In this fifth embodiment, the components of the disc brake 1 are the same as those in the third embodiment (fig. 12) except for the brake lining 3 and the lining retaining spring 7. Therefore, only the differences in the brake lining 3 and the corresponding lining retaining spring 7 will be discussed further herein.

In contrast to the first exemplary embodiment, the lining retention spring 7 has a central section 7a which is of a different design and has successive arms 7b, 7'b, each having a pressure section 7c, 7' c. The term "continuous" as used herein is to be understood to mean that the arms 7b, 7' b do not have any transition sections 7d, 7'd (similar to fig. 2) as additional support lugs for supporting the respective arms 7b, 7' b on the top side 3d of the lining back plate 3 a.

The central section 7a here comprises a retaining section 7h which extends in a straight line and is connected at each end to the respective arm 7b, 7'b by a connecting section 7i, 7' i, so that the retaining section 7h is bent towards the bottom relative to the lining back 3 a.

The central section 7a cooperates in its holding section 7h and the two connecting sections 7i, 7' i with the fastening section 3f of the lining carrier 3 a. In so doing, the fastening section 3f forms, on the one hand, a fixation of the central section 7a and thus of the lining retention spring 7 connected thereto, in order to prevent a lateral sliding in the direction of the axis of rotation 2a of the brake disc, in other words, a sliding of the top side 3d of the lining back plate 3a in the direction of the friction lining 3 b.

On the other hand, the fastening section 3f with the lug 30 forms a further fastening to the central section 7a and thus to the lining retainer spring 7 connected thereto, which faces away from the top side 3d of the lining back plate 3a in the radial direction (fig. 22).

The fastening section 3f protrudes from the top side 3d of the lining back plate 3 a. The lug 30 is mounted on the upper edge of the fastening section 3f and extends on the one hand from the top side 3d which projects in the longitudinal direction of the fastening section 3 f. On the other hand, the lug 30 also projects towards the actuation side 3j in the direction of the axis of rotation 2a of the brake disc. In other words, the lug forms a protrusion.

In this example, the lug 30 is formed by making the profile of the contact surface 30a, for example by machining (e.g. milling or grinding) on the fastening section 3f below the lug 30. Other manufacturing options are of course also conceivable, for example by means of additional components.

The central section 7a of the lining retainer spring 7 is in contact with the retaining surface 30a at one side edge of the retaining section 7h and at the side edges of the connecting sections 7i, 7'i, wherein the side edges and the top side of the inclined connecting sections 7i, 7' i are in contact with the underside and/or the underside end of the lug 30.

When the brake lining 3 is installed, the lining holding spring 7 is then supported with its pressure sections 7c, 7'c on the lining carrier saddle corners 5a, 5' a and pulls the brake lining 3 in the radial direction upwards/outwards by the interaction of the central section 7a with the lug 30. Here, the lining back plate 3a of the brake lining 3 is drawn such that the undercut surfaces 14, 14' of the projections 3c, 3' c are in contact without play on the undercut surfaces 13, 13' on the underside of the lugs 5c, 5' c of the brake bracket saddles 5a, 5' a, as described above.

The length of the central section 7a corresponds approximately to the length of the top side of the fastening section 3 f.

In contrast to the third embodiment, the arms 7b, 7' b extend from each side of the fastening section 3f of the lining back 3a on the top side 3d thereof up to and beyond their respective ends.

Each arm 7b, 7'b is provided with a slit 7g, 7' g in the region of its free end. The slits 7g, 7'g are each for receiving a guide projection 3g, 3' g. The lining retention springs 7 are secured against twisting by the guide projections 3g, 3'd of the lining back plate 3a received in the slits 7g, 7' g. In other words, the lining retention spring 7 cannot rotate about the vertical axis in the region of its central section 7a about the fastening section 3f of the lining back plate 3a or about its imaginary longitudinal axis.

The respective end regions of the slits 7g, 7'g with the lining retaining springs 7 in front of the respective pressure sections 7c, 7' c widen toward the friction lining 3 b. This widened region extends up to the respective end of the pressure sections 7c, 7' c. Therefore, the slits 7g, 7' g are no longer located at the center of the imaginary center line of the pad holding spring 7 in this region.

Furthermore, the width of each arm 7b, 7' b of the lining retention spring 7 decreases in the direction of the central section 7a, wherein a recess 7j is provided on the side of the friction lining 3 b. This results in a reduction in the width of the lining retention spring 7 between the slits 7g and 7' g, at least in the central section 7 a.

Fig. 25 shows a schematic partial view of a sixth embodiment of the disc brake 1 according to the invention. Fig. 26 shows a schematic top view of the brake lining 3 according to the sixth embodiment of the invention shown in fig. 25. Figure 27 shows a schematic perspective view of the lining retention spring 7 of the brake lining 3 according to the invention shown in figures 25 and 26; and figure 28 shows a schematic perspective view of the brake lining 3 according to the invention shown in figures 25 and 26.

The brake lining 3 differs from the fifth exemplary embodiment in the design of the fastening section 3f, which here has a retaining opening 31 with a slit 31 a.

The fastening section 3f projects away from the top side 3d of the lining back 3 a. The holding opening 31 is a through opening, the central axis 34 of which extends parallel to the axis of rotation 2a of the brake disk. Instead of a circular cross section as through opening, the holding opening 31 can also have a different cross section, for example a triangular or polygonal cross section. It is also conceivable that the retaining opening 31 is formed into the material of the lining back 3a only from one side (for example the actuating side 3j) and forms a blind hole, instead of a continuous retaining opening 31 which extends all the way through the other side of the friction lining 3 b. The slits 31 may be formed from the same side of the lining back plate 3 a.

The slit 31a extends from the top side 32, 32 'of the fastening section 3f in the radial direction from the top side 32, 32' all the way to the holding opening 31 and then opens into the holding opening 31 at its lower end. The holding opening 31 and the slit 31a divide the fastening section 3f into two sub-sections 33, 33 'having respective top sides 32, 32'.

The lining retaining spring 7 of the sixth embodiment differs from the lining retaining spring 7 of the fifth embodiment in that it has a constant width over the entire length of the top side 3d of the lining back plate 3a and a middle section 7a of a different design.

Therefore, the lining retaining spring 7 protrudes above the lining back plate 3a in the direction of the friction lining 3 b. Therefore, the assembly of the brake lining 3 can be simplified. The brake lining 3 on the clamping side is inserted between a pressure piece of the clamping device, which is arranged in the clamping section 6a of the brake caliper 6, and one of the brake carrier saddle angles 5a, 5' a on the clamping side (fig. 1). Since the lining retaining spring 7 protrudes beyond the lining back plate 3a, the lining retaining spring 7 first rests on the brake carrier bracket pan 5a, 5' a and is pretensioned by pressing the brake lining 3, which is inserted into the brake carrier 5.

The central section 7a of the lining retainer spring 7 comprises a retaining section 7k and two connecting sections 7l, 7' l.

The holding section 7k has a circular cross section with its central axis 34 parallel to the axis of rotation 2a of the brake disc and is designed like a pipe clamp with two connecting sections 7 l. The connecting sections 7l, 7' l are each connected at one end to a respective free end of the circular retaining section 7k and extend straight, parallel to one another, radially upwards. The open free ends of the connecting segments 7l are each connected to one arm 7b, 7' b of the pad holding spring 7. These connection locations may be provided with small radii or chamfers by folding or bending. In one embodiment, the lining retainer spring 7 is designed in one piece as a stamped/bent part with a central section 7a, arms 7b, 7'b and pressure sections 7c, 7' c, wherein the circular retaining section 7k is formed by rolling/bending.

The shape of the retaining section 7k corresponds to the shape of the retaining opening 31. The lining retaining spring 7 is mounted on the brake lining 3 in such a way that the retaining sections 7k of the lining retaining spring 7 are accommodated in the retaining opening 31 of the lining back plate 3a, wherein the connecting sections 31a are arranged next to one another side by side in the slot 31 a. The two arms 7b, 7' b of the lining retaining spring 7 then rest on the relatively short sections of the top sides 32, 32' of the subsections 33, 33' of the fastening section 3f and extend over the top side 3d of the lining back plate 3a of the brake lining 3 on the clamping side beyond the end of the lining back plate 3a, as has already been described above.

The retaining section 7k, which is accommodated in the retaining opening 31 of the lining back plate 3a, cooperates in a form-fitting manner with the retaining opening 31 in such a way that the lining back plate 3a and thus the brake lining 3 is pulled upwards by the pressure sections 7c, 7'c, which rest on the brake carrier saddle angles 5a, 5' a, as has already been described above.

Due to the spring force of the holding section 7k, the holding section is thus pressed against the wall of the holding opening. Such a form-fitting connection may also be formed with other cross-sections, like those described above. The partial segments 33, 33' form opposing lugs which are separated by the slot 31a and the retaining opening 31 located therebelow and, owing to their shape, contribute to a positive-fit connection between the retaining segment 7k of the lining retaining spring 7 and the lining back plate 3a of the brake lining 3.

In this way, a simple fastening of the lining retaining spring 7 on the brake lining 3 is formed and also an easy installation.

Fig. 29 shows a schematic partial view of a seventh embodiment of the disc brake 1 according to the invention. Fig. 30 and 31 show schematic, partially enlarged views of the seventh exemplary embodiment of the disc brake according to the invention shown in fig. 29, wherein fig. 30 shows a partial view of the region of the lining back plate 3a on the entry side with the respective brake carrier saddle angle 5a, and fig. 31 shows a plan view of the view according to fig. 30. Fig. 32 and 33 show schematic perspective views of the pad retaining spring of the seventh embodiment of the disc brake according to the present invention shown in fig. 29.

In this seventh embodiment, the components of the disc brake 1 are the same as those in the second embodiment (fig. 8, 9) except for the brake lining 3. Therefore, in the remaining description only the differences in the brake lining 3 will be discussed again.

The projections 17a, 17'a are plate-shaped, project upward from the top side 3d of the lining back plate 3a, and each form a retainer for the lining retaining spring 70, 70'. In contrast to the second embodiment, the lining retention springs 70, 70' here are formed partly as covers, as will be explained in more detail below.

Each projection 17a, 17'a is arranged offset from the center of the lining back plate along a longitudinal line at a distance from each end of the lining back plate 3a facing the respective brake carrier saddle 5a, 5' a, so that this distance corresponds approximately to the thickness of the lining back plate 3 a. However, the distance may also be greater than the thickness of the lining back plate 3a, for example. The side of each projection 17a, 17' a facing the respective brake carrier saddle 5a, 5' a has a contact surface 17b, 17' b, which is designed here as a hollow throat.

The rear surface of each lug 17a, 17' a facing the clamping side ZS is flush with the rear surface of the lining back 3a, with the friction lining 3b facing the clamping side ZS. However, in another example not shown here, it may be necessary to provide a shoulder on the rear surface of the or each projection 17a, 17' a facing the clamping side ZS if the surface of these surfaces of the rear surface or the raw part does not meet the requirements. However, the other rear surface of each projection 17a, 17' a facing the actuation side 3j is spaced apart from the actuation side 3j by a distance. The certain distance here corresponds approximately to twice the thickness of the fastening strips 73b, 73'b of the lining retention springs 70, 70'. Of course, the distance may also be different, wherein the depth of the shoulder may vary. This shoulder may be necessary to obtain a clean contact surface and to be able to use the same pad holding springs 70, 70' for both the left and right.

A holding element 76, 76 'is mounted at the center of each projection 17a, 17' a. These retaining elements 76, 76 'comprise, for example, rivets and bolts, with which the respective lining retaining spring 70, 70' is mounted in a fixed and form-fitting manner on the respective projection 17a, 17'a via the fastening strip 73b, 73' b.

Each lining retention spring 70, 70' comprises a base plate 73, 73', two fastening strips 73b, 73' b and a spring arm 74, 74', each having a pressure section 74c, 74' c.

The pad holding spring 70 on the leaving side is described below. The design of the lining retainer spring 70' on the entry side is embodied in mirror image here.

The base plate 73 is designed in the form of an elongated rectangle whose length corresponds approximately to the width of the projection 17 in the direction of the axis of rotation 2a of the brake disc. The fastening band 73b is mounted on the short side of the base plate 73 by the bent connecting section 73 a. The fastening strips 73b extend towards one side (to the left in fig. 32-33) at a substantially right angle relative to the bottom panel and extend parallel to each other. Further, each fastening strap 73b has an opening 73c through which a fastening element 76 passes.

In this case, in the installed state of the lining retention springs 70, 70', the base plate 73 is arranged such that the base plate 73 lies in a plane which is substantially perpendicular to the undercut surfaces 14, 14' of the lining back plate 3a in the direction of the axis of rotation 2a of the brake disk.

The spring arms 74 are mounted on the longitudinal sides of the bottom plate 73, arranged in fig. 32-33, by means of connection segments 74 a. The connecting section 74a has a convex curvature towards the right, so that its curvature matches the curvature of the contact surface 17b of the projection 17a, which is designed here as a hollow groove. The connecting section 74a extends into the spring arm 74 with a widening effect. The pressure section 74c is mounted on the right end of the spring arm 74 a. The underside of the pressure section 74c has a contact section 9 which, in the installed state of the brake lining 3, rests on the support section 8 of the respective brake carrier bracket pan 5 a.

In the uninstalled state of the brake lining 3, the bottom side of the connecting section 74a rests on the contact surface 17 b. Here, the bottom side of the spring arm 74 rests from the contact surface 17b to the end of the top side 3d on the top side 3d of the lining back plate 3 a. This support of the lining retention spring 70 is made possible by the pretensioned fastening of the lining retention spring 70 on the projection 17 a.

In order to obtain the spring force of the lining retention spring 70, 70 'required for the respective application, the lining retention spring 70, 70' can be provided with recesses as required. This is illustrated in fig. 32, in which the recess is embodied as a slit 74 b.

The embodiment of the lining retention spring 70, 70' shown in fig. 32 has a slit 74b which, starting from its remaining two thirds facing the connecting section 74a, extends through approximately one third of the connecting section 74a into the base plate 73 in the imaginary longitudinal direction of the spring arm 74.

The variant (not shown) is additionally equipped with reinforcing beads/ribs. It is also possible to provide a reinforcement without slits 74 b. Of course, multiple slits 74b may also be arranged side-by-side and/or in different locations.

Fig. 34 shows a schematic view of a brake lining 3 of a variant of the seventh embodiment of the disc brake 1 according to the invention shown in fig. 29. Fig. 35-36 show a schematic perspective view of the lining retention spring 70, 70' according to a variant of the seventh embodiment of fig. 34.

In contrast to the seventh exemplary embodiment, the lining retainer springs 70, 70 'are designed on the one hand in the form of a hood and on the other hand with supporting arms 75, 75'. The hood shape is understood to mean that the base plate 73, 73' is arranged here in the mounted state of the lining retaining spring 70, 70' such that the base plate 73, 73' lies in a plane which is approximately parallel to the undercut surface 14, 14' of the lining back plate 3a and is arranged above the projection 17a, 17' a.

On the short sides of the bottom plate 73, the fastening strips 73b are arranged such that they are rotated 90 ° counterclockwise with respect to the bottom plate 73 by means of the bent connecting segments 73a, as in the seventh embodiment according to fig. 29, except that they are rotated 90 ° counterclockwise with respect to the bottom plate 73. Therefore, the spring arm 74 is designed such that it is elongated together with the connecting section 74a and is mounted on the base plate 73 by bending the connecting section 73 d. The connecting section 74a and the connecting section 73d form a connecting S-shaped connecting section, wherein the connecting section 74a matches the shape of the contact surface 17 b.

The support section 75 is mounted on the other long side of the base plate 73 by a bent connection section 73e and the opposite bent connection section 75 a. The curved connecting segments 73e and 75a together form an S-shaped connecting segment. The support arm 75 is designed in the form of a plate and has on its underside a support section 75b which rests on the top side 3d of the lining carrier 3a in the mounted state of the lining retaining springs 70, 70'.

Fig. 36 shows another modification of the pad holding spring 70 having the slit 74b, which has been described in connection with fig. 32.

The above description of the lining retainer spring 70 on the exit side according to the variant of fig. 34 naturally also applies to the lining retainer spring 70' on the entry side.

The respective support arms 75, 75' not only form a support in this way, but also counteract a rotational movement of the respective lining retention spring 70, 70' in the mounted state of the lining retention spring 70, 70 '.

Fig. 37 shows a schematic view of a brake lining 3 according to the invention of a further variant of the seventh embodiment of the disc brake according to the invention shown in fig. 29. Figures 38-39 show a schematic perspective view of the lining retention spring 70, 70' according to this further variant of the seventh embodiment of figure 37.

In this further variant, the difference compared to the variant according to fig. 34 is that the shape of the spring arm 74 and the shape of the connecting sections 74a and 73d extend in a stretched manner, i.e. the radius of curvature of the respective curved sections is greater, wherein the connecting section 74a does not match the shape of the contact surfaces 17b, 17' b and does not rest against these in the installed state of the brake lining 3.

The variant of the lining retention spring 70 according to fig. 38 shows a slit 74b which extends centrally along the longitudinal axis through the connecting sections 74a and 73b and over approximately three quarters of the base plate 73. This of course also applies to the lining retention spring 70' on the entry side.

Statements regarding slits 74b, 74' b, including reinforcing beads/ribs (not shown), naturally apply here as well.

The pad holding springs 70, 70' of the seventh embodiment (including its modification) are made of spring steel.

The invention is not limited to the embodiments described above but may be modified within the scope of the appended claims.

Thus, for example, it is conceivable that the brake carrier 5 can be embodied with a so-called radial groove 21 for simple mounting of the brake lining 3. This recess 21 extends in the direction of the respective brake carrier saddle angle 5a, 5' a between one side of the respective lug 5c, 5' c and one edge of the respective brake carrier saddle angle 5a, 5' a. This is shown in fig. 6.

The foregoing disclosure has been set forth merely to illustrate the invention and is not intended to be limiting. Since modifications of the disclosed embodiments incorporating the spirit and substance of the invention may occur to persons skilled in the art, the invention should be construed to include everything within the scope of the appended claims and their equivalents.

List of reference numerals

1 disc brake

2 brake disc

2a axis of rotation of the brake disc

3 brake lining

3a facing back sheet

3b Friction liner

3c, 3' c protrusions

3d top side

3e, 3' e corner section

3f fastening section

3g, 3' g guide projection

3h, 3' h recess

3i, 3' i chamfer

3j actuating side

4, 4' undercut

5 brake support

5a, 5' a; 5b, 5' b brake spider angle

5c, 5' c lugs

5d pillar

5e fastening side

5f pillar

6 brake caliper

6a clamping section

6b reaction section

6c, 6' c connecting segment

7 facing retaining spring

7a center section

7b, 7' b arm

7c, 7' c pressure section

7d, 7'd transition section

7e, 7' e middle section

7f, 7' f; 7g, 7' g slit

7h holding section

7i, 7' i connecting segment

7j tapered portion

7k holding section

7l, 7' l connecting segment

8, 8' support section

9, 9' contact section

10 main direction of rotation

10a pivot point

11, 12 forces

11a, 12a Lever arm

13, 13' undercut surfaces

14, 14' undercut surfaces

15, 16 lining groove

17, 17' spring retainer

17a, 17' a projection

17b, 17' b contact surface

18, 18' holding element

19, 19' opening

20, 20' fastening element

20a board

20b, 20c side wall

20d transverse segment

20e connecting part

21 groove

30 holding lug

30a contact surface

31 hold open

31a slit

32, 32' top side

33, 33' subsegments

34 central axis of rotation

35, 35' side surface

70, 70' lining retaining spring

70a center section

70b, 70c transition section

71, 71' pressure section

72, 72' bearing section

72a support section

73, 73' sole plate

73a, 73' a connecting segment

73b, 73' b fastening strap

73c opening

73d, 73'd connecting segment

73e, 73' e connecting segment

74, 74' spring arm

74a, 74' a connecting segment

74b slit

74c, 74' c pressure segment

75, 75' support arm

75a, 75' a connecting segment

75b, 75' b support section

76, 76' fastening element

RS back side

ZS clamping side

Claims

1. A disc brake for a vehicle, comprising:

a brake disc;

at least two brake pads comprising a clamping-side brake pad on a clamping side of the brake rotor and a back-side brake pad on a back side of the brake rotor;

a brake bracket configured to receive the at least two brake pads in respective clamp-side and back-side brake pad slots, the brake bracket having at least one brake bracket saddle angle at least lateral sides of the clamp-side brake pad slots;

a brake caliper configured to straddle the brake rotor when in a mounted position on a brake mount, the brake caliper having a clamping side arranged to apply the clamping side brake pad against the clamping side of the brake rotor and a back side arranged to apply the back side brake pad against the back side of the brake rotor,

wherein the clamping-side brake pad is positioned in groove-fitting engagement with the clamping-side brake pad with respect to a radial direction perpendicular to the axis of rotation of the brake disc,

the caliper-side brake pad including at least one pad retention spring configured to bear against the at least one caliper-side brake spider and apply a radially outward tension force on the caliper-side brake pad,

the positive-fit engagement of the caliper-side brake pad with the caliper-side brake pad slot includes positive-fit engagement of a pad backing plate of the caliper-side brake pad with a contour of the at least one caliper-side brake spider,

the profile of the at least one clamp-side brake spider includes an undercut surface configured to engage without play an undercut surface of an opposing tab of the lining backer plate when the clamp-side brake lining is subjected to the radially outward tension applied by the at least one lining retention spring,

the at least one lining retaining spring is retained and guided on the lining back plate,

the at least one pad retaining spring including a central section, arms on opposite sides of the central section between the central section and respective adjacent pressure sections, and a transition section between the central section and the arms,

the central segment is configured to cooperate with a retaining segment and the connecting segment interacts with a fastening segment of the lining back plate such that the fastening segment prevents lateral movement of the central segment and the at least one lining retention spring in an axial direction toward the friction lining and prevents radial movement of the central segment and the at least one lining retention spring in the radial direction away from a top side of the lining back plate, and

at least one of the pressure segments is supported on the at least one brake spider saddle angle of the brake spider.

2. The disc brake of claim 1,

the at least one lining retention spring is mounted on the lining backing plate.

3. The disc brake of claim 2,

the at least one lining retention spring is located on the top side of the lining backing plate.

4. The disc brake of claim 3,

the central section is located on the top side of the liner backing plate,

the transition section is located above the top side of the lining backing plate, and

the pressure section extends beyond the lateral side of the lining backing plate.

5. The disc brake of claim 3,

the central section is located on the top side of the liner backing plate,

the transition section is located on the top side of the liner backing plate,

the center section is secured to the top side of the liner backing plate by at least one fastener, and

6. The disc brake of claim 5,

the at least one fastener is a clip including a lateral segment configured to extend through an opening in the lining back plate with the at least one lining retention spring positioned between the at least one fastening element and the top side of the lining back plate.

7. The disc brake of claim 5,

the at least one pad retention spring includes at least one slot configured to receive a section of the at least one fastener extending through the at least one slot.

8. The disc brake of claim 7,

the at least one lining retention spring has at least one additional slit through which the guide projection of the lining back plate extends.

9. The disc brake of claim 4,

the at least one brake spider includes two brake spider horns located at laterally opposite sides of the clamping-side brake pad slot, and

at least one of the pressure segments is configured to be supported on at least one of the two brake spider angles.

10. The disc brake of claim 3,

the at least one lining retention spring is mounted on the top side of the lining back plate by at least one spring retainer.

11. The disc brake of claim 10,

the at least one spring retainer comprises at least one retaining element, and

the at least one lining retaining spring is located between the at least one retaining element and the top side of the lining carrier in the pretensioned state.

12. The disc brake of claim 11,

the at least one pad retaining spring includes at least one central section, a transition section, at least one pressure section, and at least one bearing section.

13. The disc brake of claim 12,

the at least one support section is located on the top side of the lining back plate, and

the at least one pressure section extends laterally from a lateral end of the top side of the lining backing plate.

14. The disc brake of claim 13,

the at least one pressure section is supported on the at least one brake spider saddle of the brake spider.

15. The disc brake of claim 11,

the at least one retaining element is a cable roller.

16. The disc brake of claim 10,

the at least one lining retention spring is formed from a spring wire.

17. The disc brake of claim 10,

the at least one lining retention spring is located on the lateral end and an opposite lateral end of the top side of the lining back plate.

18. The disc brake of claim 1,

the fastening section and a lug cooperate to prevent radial movement of the central section and the at least one pad retaining spring in the radial direction.

19. The disc brake of claim 18,

the fastening section extends away from the top side of the lining backing plate and

the lug is mounted on the upper edge of the fastening section and extends as a projection toward the actuating side of the lining back plate facing away from the brake disk.

20. The disc brake of claim 19,

the lugs are a profile forming a retaining surface on the underside of the fastening section.

21. The disc brake of claim 20,

the central section of the at least one lining retention spring contacts the retention surface along side edges of the retention section and side edges of the connection section, and

the side edges and top side of the connecting section contact at least one of the bottom side of the lug and the bottom side end of the lug.

22. The disc brake of claim 21,

the at least one lining retention spring includes at least one slot configured to receive a guide tab of the lining backing plate, the guide tab extending through the at least one slot.

23. The disc brake of claim 22,

the at least one slit includes two slits, and

the at least one pad retaining spring includes a recess formed by reducing a width of the at least one pad retaining spring between the two slits.

24. The disc brake of claim 22,

the pressure segments extend laterally away from opposite lateral ends of the top side of the lining backing plate.

25. The disc brake of claim 2,

the at least one lining retainer spring is located on the lining carrier in a positive-locking manner.

26. The disc brake of claim 25,

the at least one pad retaining spring comprises: a central section having a retention section and two connection sections; arms on opposite sides of the central section between the central section and respective adjacent pressure sections,

the retaining section is located in a form-fitting manner in the retaining opening of the lining carrier and

the two connecting segments are located in the slits of the lining backing.

27. The disc brake of claim 26,

the retaining segment has a circular cross section, the central axis of the retaining segment extends parallel to the axis of rotation of the brake disc, and

the holding section is configured in the manner of a pipe clamp with two connecting sections.

28. The disc brake of claim 27,

the holding opening is a through opening or a blind hole having at least one of a circular cross section and a polygonal cross section, and

the retention opening is radially spaced from the top side of the fastening section and is connected to the top side of the fastening section by the slit.

29. The disc brake of claim 28,

the fastening section projects radially away from the top side of the lining back plate and

the fastening section is divided by the slit into two subsections, each of which includes a portion of the top side of the lining backing.

30. The disc brake of claim 29,

the lining retaining spring has a constant width over the entire length of the top of the lining back plate, and

the lining retainer spring projects axially beyond the top of the lining back plate in the direction of the friction lining on the brake disk side of the lining back plate.

31. The disc brake of claim 26,

the lining retention spring has at least one slit through which the guide projection of the lining backing plate extends.

32. The disc brake of claim 31,

the pressure section projects laterally away from the lining backing plate on each end of the top side of the lining backing plate.

33. The disc brake of claim 32,

at least one of the pressure segments is supported on the at least one brake spider saddle angle of the clamping-side brake pad slot.

34. The disc brake of claim 10,

the at least one spring retainer has a plate-like projection projecting radially away from the top side of the lining back plate, on which the at least one lining retaining spring is fastened.

35. The disc brake of claim 34,

the at least one pad retaining spring has a hood form.

36. The disc brake of claim 34,

the at least one pad retaining spring comprises: a base plate; two fastening strips extending from the base plate and spaced apart from each other by a distance sufficient to receive the plate-like projections; and a spring arm adjacent to the base plate,

the spring arm comprises a portion of the at least one pressure section that protrudes beyond a lateral end of the top side of the lining back plate, and

the fastening strip of the at least one lining retention spring is located on the plate-like projection.

37. The disc brake of claim 36,

the at least one lining retainer spring is located on the plate-shaped projection in a form-fitting manner.

38. The disc brake of claim 37,

the at least one lining retention spring is fixed to the plate-like projection.

39. The disc brake of claim 36,

the spring arm of the at least one liner retention spring is connected to the bottom plate by a curved connecting segment.

40. The disc brake of claim 39,

the curved connecting section conforms to the lateral contact surface of the plate-like projection.

41. The disc brake of claim 36,

the at least one lining retention spring has at least one support section on the base plate on a lateral side of the plate-like projection opposite the spring arm, and

at least a portion of the at least one support segment is supported on the top side of the lining backing plate.

42. The disc brake of claim 36,

the spring arm of the at least one liner retention spring includes at least one slot adjacent the plate-like projection.

43. The disc brake of claim 36,

the at least one lining retention spring includes at least one of a reinforcing flange and a reinforcing rib.

44. The disc brake of claim 36,

the at least one pressure section projects laterally away from the lining carrier on one end of the top side of the lining carrier.

45. The disc brake of claim 44,

the at least one pressure segment is supported on the at least one brake spider saddle angle of the clamping-side brake pad slot.

46. The disc brake of claim 34,

the at least one pad retaining spring includes two pad retaining springs, and each of the two pad retaining springs is disposed on a respective lateral end of the top side of the pad backing plate.

47. A brake pad set for a disc brake of a vehicle, the brake pad set having a disc brake according to claim 1,

the brake pad set comprises at least two brake pads comprising a clamping-side brake pad configured to be located in a clamping-side brake pad groove of the disc brake and a back-side brake pad configured to be located in a back-side brake pad groove of the disc brake, and

at least the clamping-side brake lining comprises at least one lining retainer spring with at least one pressure section which projects laterally beyond a lateral end of the top side of the clamping-side brake lining back plate.