DE102018221311A1 - Return mounting system for a disc brake and brake pad with air spring - Google Patents

Abstract

An improved return spring system (1) for active adjustment of a clearance in a motor vehicle disc brake (5) is proposed, which is suitable in principle for fixed and floating caliper brakes and improved handling and corrosion protection in all operating and wear conditions as uniform as possible restoring moment of the brake pad ( 2) permanently ensured and for this purpose provides that the Lüftspielfeder (7) is explicitly assigned to the brake pad (2) formed as a tension spring, which is stretched elastically between the brake pad (2) and a brake caliper (6) and at least one force application point (8) with the brake pad (2) permanently captive, in particular permanently connected and wherein the force application point (8) on a friction lining (3) facing away from the Reibbelagträgerplatte (4) is arranged.

Description

The most widely used automotive disc brakes use two oppositely against the friction ring of a brake disc tensionable brake pads and are divided into two basic types which differ fundamentally in function and structure.

As a brake pad is in this connection a slidably arranged in the brake function module to understand, in addition to the actual friction lining and a Reibbelagträgerplatte or -rückenplatte depending on the type also include other components and attachments such as damping plates, rivets, sliding plates, Verschleissanzeigen, sensors and the like can.

In a fixed caliper brake caliper is firmly connected to a Fahrzeugachskomponente and has at least two on both sides of the brake disc arranged counter-acting brake piston. As a result, each brake pad is actuated by at least one brake piston acting directly on it. The brake pads slide on the caliper fixed sliding surfaces or components and the peripheral forces from the brake pads are introduced into the caliper.

In a fist or floating caliper brake caliper is axially displaceable or floating relative to a fixedly connected to a Fahrzeugachskomponente brake holder stored. One or more co-acting brake pistons are arranged in the caliper only on one side of the brake disc, so that the one or more brake pistons act directly on one of the two brake pads, whereas the other brake pad is acted upon by a brake piston opposite flank of the caliper. The two brake pads slide on brake holder fixed trained sliding surfaces or components and the circumferential forces from the brake pads are introduced into the brake holder.

The vehicle disc brakes are in principle designed so that in the dissolved state, ie before or after a brake operation, a so-called clearance between the friction ring and friction lining is set. This clearance describes in practice an axial distance between the oppositely arranged friction surfaces of friction lining and friction ring.

In a passive Lüftspieleinstellung the return of the brake pad after a braking operation by low imbalances of the brake disc, which "bounces" the brake pads after the brake piston is retracted after brake pressure reduction by rubber-elastic recovery of a brake piston seal. It is known to connect the brake pad, for example by means of a spring clip with the brake piston to support the relocation. Such a method is simple, but associated with undesirable noise and increased brake wear. Corrosion, wear and contamination of brake lining guide sections can also significantly increase the frictional resistance of the brake linings along the actuation path and thereby adversely affect the clearance setting.

In order to improve this, it is known to implement the clearance setting actively, spring-assisted. In this context, separate, arranged in the brake, so-called Lüftspielfedern known in automotive disc brakes, which resiliently act on a brake pad in its respective return direction and thus form in conjunction with the brake pad and the brake Rückstellbefederungssystem.

For example, it is off DE 10 2017 222 639 A1 a Rückstellbefederungssystem for a fixed caliper brake, which has a pair of specially shaped, formed as a compression spring bow springs. Each bow spring is mounted on both brake pads before assembly of the brake pads in the brake and thus connects them together. For this purpose, the bow spring on each spring leg end has integrated spring clips, which surround the respective friction lining carrier plate radially inside. The two held together by two bow springs brake pads are introduced together when assembled as a package in the caliper. Such mounting principle is considered simplistic. When installed, the bow spring spans the two brake pads radially outward and pushes them apart in the respective return directions. However, it is therefore in a particularly exposed area for environmental influences and brake dust and at the same time hinders the removal of the brake dust. As a result, increased corrosion protection requirements must be met for the spring material to ensure durability. In addition, such a spring construction is not suitable for a Faustsattelbremse with their specific floating structure and unbalanced one-sided brake piston assembly.

An object of the present invention is thus to propose an improved return spring system for adjusting the clearance with basic suitability for fixed and floating caliper brakes, which in a simplified handling and improved corrosion protection of the air spring in all operating and wear conditions permanently reliably ensures the most uniform return torque of the brake pad.

The object is achieved by a restoring spring system having features according to claim 1. Further developments and various modifications and embodiments of the invention will become apparent from the dependent claims and the following description and figures.

Individual components of the return mounting system according to the invention also belong to claimed subject matter.

The invention provides that the Lüftspielfeder explicitly assigned to a single brake pad and is designed as a tension spring. Furthermore, the Lüftspielfeder between the brake pad and a brake caliper is elastically tensioned and permanently connected to at least one point of application of force with the brake pad, preferably undetachably connected. Here, the force application point is provided on a side facing away from the friction lining of the friction lining carrier plate.

The air spring is thus part of the brake pad, loss of risk due to carelessness or during transport is reduced. There is no need for preparatory work for assembly, the procedure is simplified and assembly errors are reduced.

By the brake lining side bearing and tensile load of the brake pad is transported in a defined reset position without the need for an adjustment function. Because the return spring is shown as a cost component of a wear-prone Scheibenbremsreibbelages, a separate adjustment function, ie a plastic spring adjustment by means of spring leg extension or spring leg shortening obsolete.

Preferably, the Lüftspielfeder invention can be made of sheet steel material whereby the space requirement is further reduced. The loss secured connection to the brake pad can be done within the invention, in particular by riveting, but also clinching or otherwise, preferably forming technology.

Preferably, the Lüftspielfeder is completely arranged on a side facing away from the friction lining of the friction lining carrier plate. As a result, a space-neutral solution is offered, brake pad guide sections are exempted from the additional feathering, any negative effects in terms of brake actuation feeling and brake pedal behavior are avoided.

Such a hidden protected position of the air spring improves its corrosion protection and maintains full functionality even with dirty, corroded or worn guide system of the brake pads. Furthermore, the ventilation system of the brake is not hindered, which leads to an overall higher robustness.

The invention further provides that the Lüftspielfeder in the manner of a self-contained spring clip has a spring body and an end connected to the spring body and bent from this spring tab, wherein the spring body and the spring tab at its connection point opposite end each have an interface for a force-transmitting Attachment to another component. The spring-lug-side interface can preferably be designed for simplified penetration of a rivet as a fastening eye. In a further development of the invention, the spring body can have two sections in the circumferential direction spaced apart support arms and the spring clip between the two support arms, with which it is connected end.

Such designed Lüftspielfeder can be punched particularly quickly and inexpensively in a single operation of sheet material. Due to the highly integrated design, a high level of functionality is achieved on a comparably small surface with a reduced use of materials.

For a simple and robust design and training of a linear spring characteristic is formed according to the invention the spring tab in an unloaded initial state before mounting on the brake pad relative to the spring body in a brake pad opposite axial direction. Thus, when mounting the spring tab on the brake pad, a biasing force is built up and the spring body is elastically pressed rattle-free in abutment function to the brake pad.

A simplified, quick and tool-free feasible preloading and fixing the Lüftspielfeder on the brake caliper can be realized according to a preferred embodiment by the interface-side end of the spring body bent and provided with a radially directed opening for locking on a formed on the brake caliper radially directed projection becomes. In advantageous developments, at the interface-side end of the spring body in addition a sliding ramp and on Projection be formed a chamfer for simplified sliding during Verrastungsvorgang.

According to another embodiment, the interface-side end of the spring body may have an axially directed opening which is formed in alignment with a corresponding housing opening in the brake caliper as an abutment. Both breakthroughs will be pushed through to fix the Lüftspielfeder with a separate locking element, which is abutment side fixed automatically by an engaging detent attack in an undercut. This two-sided fixation of the Lüftspielfeder avoids unwanted vibration or rattling or prevents noise impairment due to resonant vibration of the Lüftspielfeder. Within the scope of the invention, different embodiments of latching elements configured in the form of pin mandrels or clamps can be used as the blocking element, for example.

A screw for releasably fixing the Lüftspielfeder on the abutment is also conceivable as an alternative.

According to another embodiment, the engaging engagement catch can be particularly advantageous to be realized in one piece without a separate locking element with spring-integrated locking elements. For this purpose, the interface-side end of the spring body can be bent for insertion through an axially aligned in the caliper housing breakthrough and provided with at least one integrated and radially resilient and integrally formed integrally formed axially acting locking element.

For a symmetrically uniform loading of the brake pad and avoiding tilting and skewing, the force application point of the Lüftspielfeder may preferably be provided in a central position on the Reibbelagträgerplatte in particular in the region of the Reibflächenschwerpunktes.

In a modification of the invention, it is in principle conceivable to fix a plurality of Lüftspielfedern decentralized to the Reibbelagträgerplatte and preferably symmetrically with respect to the Reibflächenschwerpunktes, without departing from the spirit of the invention.

Furthermore, a Lüftspielfeder and a brake pad in their separate, specially adapted to each other versions according to the invention Rückstellbefederungssystem also claimed individually for themselves.

Likewise, a motor vehicle disk brake adapted to the use of a return mounting system according to the invention is claimed in its superordinate connection function for individual system components both in fixed caliper design and in the design of a fifth wheel caliper.

Furthermore, in a further development of the invention, a claimed for use in multi-piston brakes brake lining claimed in which the force application point of the Lüftspielfeder is particularly space-saving arrangement between two adjacent piston abutment surfaces.

• 1 räumliche Ansicht eines Bremsbelags mit einer daran montierten Lüftspielfeder gemäß einem bevorzugten Ausführungsbeispiel der Erfindung
• 2 räumliche Darstellung einer erfindungsgemäßen Ausführungsform des Rückstellbefederungssystem am Beispiel einer Festsattelbremse.
• 3 Eine bevorzugte Ausführungsform der Lüftspielfeder räumlich und in Seitenansicht.
• 4 Seitenansicht eines Bremsbelags mit einer darauf befestigten Lüftspielfeder in einem nicht montierten Ausgangszustand (a) und bei Betriebsauslenkung (b)
• 5 unterschiedliche Anordnungsbeispiele einer Lüftspielfeder an einem Bremsbelag.
• 6 Zwei Ausführungsbeispiele (a,b) mit einem ersten Schnittstellentyp.
• 7 und 8 Verschiedene Ausführungsbeispiele von zwei Untergruppen eines zweiten Schnittstellentyps.
• 9 Verschiedene Ausführungsbeispiele (a,b) eines dritten Schnittstellentyps.
• 10 Verformung einer erfindungsgemäßen Lüftspielfeder bei verschiedenen Betriebszuständen.
• 11 Beispiel eines Kraft-Weg-Diagramms einer erfindungsgemäßen Lüftspielfeder bei verschiedenen Betriebszuständen

Other features, advantages and applications of the invention will become apparent from the following description of several embodiments. Hereby show:

• 1 Spatial view of a brake pad with an air spring mounted thereon according to a preferred embodiment of the invention
• 2 Spatial representation of an embodiment of the invention Rückstellbefederungssystem the example of a fixed caliper brake.
• 3 A preferred embodiment of the Lüftspielfeder spatially and in side view.
• 4 Side view of a brake lining with a clearance spring mounted thereon in an unassembled initial state ( a ) and during operational deflection ( b )
• 5 different arrangement examples of a Lüftspielfeder on a brake pad.
• 6 Two embodiments ( a . b ) with a first interface type.
• 7 and 8th Various embodiments of two subgroups of a second interface type.
• 9 Various embodiments ( a . b ) of a third interface type.
• 10 Deformation of a Lüftspielfeder invention under different operating conditions.
• 11 Example of a force-displacement diagram of a Lüftspielfeder invention under different operating conditions

1
The Rückstellbefederungssystem invention 1 includes a brake pad 2 with a Lüftspielfeder explicitly assigned to this and attached thereto 7 , The brake pad 2 includes a friction lining carrier plate 4 , which on one side with a friction lining 3 is provided. The air spring 7 is in the axial direction A completely on a friction lining 3 opposite side of the friction lining carrier plate 4 arranged and formed as a tension spring. For power transmission, the air spring has two interfaces 11 . 12 , The first interface 11 serves for attachment to the brake pad 2 and at the same time forms the force attack point 8th , The second interface 12 serves to tension and tie the air spring 7 on the caliper 6 to the brake pad 2 to pull axially in its return direction.

In the preferred embodiment shown is the Lüftspielfeder 7 forming technology by a riveted joint with the brake pad 2 Permanently undetachably connected during its production, so that they together with the brake lining in all subsequent process steps 2 is handled.

2
In the 2 is an example of application of the return command system 1 in a vehicle disk brake 5 of the fixed saddle type with 4 brake pistons 21 . 21 ' . 21 ' . 21 ''' shown. The axially opposite brake pistons 21 and 21 '' or. 21 ' and 21 ''' are each formed coaxially and in opposite directions. Two brake pads 2 . 2 ' with attached airsprings 7 . 7 ' are in the caliper 6 used. The airsprings 7 . 7 '' are stretched axially in the direction of each adjacent caliper side and the interfaces 12 . 12 ' are in a force-transmitting engagement with two on the caliper 6 formed radial projections 15 . 15 ' brought. This will make any brake pad 2 . 2 ' through the respective assigned Lüftspielfeder 7 . 7 ' active and permanent, pulled axially in its return direction away from the brake disc, not shown here.

In a not shown here caliper brake or floating caliper brake is the Rückstellbefederungssystem 1 be arranged and tensioned in an analogous manner in the caliper.

3
In the 3 is a preferred embodiment of the Lüftspielfeder 7 in an unloaded initial condition as before attachment to the brake pad 2 present, represented. The air spring 7 is integrally formed as a plate spring and has a spring body stretched in the radial direction 9 on, which in its first end portion a pair of circumferentially spaced apart support arms 13 formed. In the circumferential direction U between the carrying arms 13 arranged and end connected to this is a spring tab 10 ,

At its opposite end of the connection is located on the spring tab 10 a designed in this embodiment as a fastening eye, provided for attachment to the brake pad interface 11 , At the junction of the opposite end of the spring body 9 there is another interface 12 , which for the force-transmitting connection to the caliper 6 is provided. Various inventive characteristics of the interface 12 be in the following 6-9 and the associated description explained in more detail.

The spring tab 10 is in relation to the spring body 9 axially in a brake pad 2 opposite direction (the return direction) bent plastically, so that their end-side interface 11 to the spring body 9 axially a defined preload deflection Sv having.

4
The view a) the 4 shows a brake pad 2 with a clearance spring mounted thereon 7 in a non-operational initial state, such as during transport or immediately after the inserts of the brake pad 2 in the caliper 6 , but before tensioning the air spring 7 is present. The spring tab 10 is to the friction lining carrier plate 4 Elastic biased, is also on this and is at its interface 11 with the brake pad 2 connected. At the junction is thus a force application point 8th formed, whereby the spring body-side interface 12 with a preload force Fv axially to the brake pad 2 is acted upon towards or against the return direction and the spring body 9 against the friction lining carrier plate 4 pressed flat rests.
The view b) the 4 shows a staggered during braking in the direction of actuation brake pad 2 with the air spring 7 in the appropriate braking position. The spring body-side interface 12 is engaged with a brake-resistant projection 15 , This is the spring tab 10 through the opening in the spring body 9 between the carrying arms 13 pushed through, causing the Lüftspielfeder 7 scissor-like, forming an increased operating force Fb is tense. The operating force Fb acts on the brake pad 2 as a directed in the return direction tensile force.

5
In the 5 shows by way of example three different on a brake pad 2 designed force application points 8th each with suitably modified Lüftspielfedern 7 ,
In practice, the geometry, structure and nature of a brake pad can vary widely. The invention Lüftspielfeder 7 can be flexibly adapted to the variations. As an example, here is a brake pad 2 according to 2 shown, which for simultaneous application by two brake pistons 21 . 21 ' is provided and for this purpose two circumferentially spaced apart, underlaid with separate sheets piston contact surfaces 22 . 22 ' having.

The friction surface of the brake pads 2 is formed in the circumferential direction largely mirror-symmetrical, the central axis M runs approximately through the radial Reibflächenschwerpunkt of the respective brake pad 2 ,

For a symmetrical load the force application point should 8th the air spring 7 ideally be arranged in Reibflächenschwerpunkt. This is often not exactly feasible for reasons of space, so that the position of the force application point 8th should be provided in as central as possible and the Reibflächenschwerpunkt approximate position. As in the views a ) to c ) exemplified, is the force application point 8th in the circumferential direction symmetrically between the piston contact surfaces 22 . 22 ' , in the radial direction, however, at a distance to the center axis M , Because the position of the interface 12 for easy mounting on the caliper 6 radially not possible within one of the brake pad 2 described contour is the air spring 7 shortened accordingly in their radial extension a ) or extended b ) c ).

In the 6 to 9 be exemplary and not conclusive different forms of interfaces between the air spring 7 and the caliper 6 shown and explained below.

6
The connection of the air spring 7 to the caliper 6 is in the embodiment shown by a snap or locking the interface 12 at one on the caliper 6 protrusion formed in the radial direction 15 ,

This is the interface-side end of the spring body 9 in the brake pad 2 opposite axial direction tab-like bent and with a radially directed breakthrough 14 Provided. After inserting the brake pad 2 with the air spring attached to it 7 in the caliper 6 becomes the interface-side end of the spring body 9 with a finger or tool-assisted axially pressed to the caliper down to the interface 12 overruns the projection and snaps or locked on it. One end on the spring body 9 Angled shaped slip ramp 16 makes it easier to slide off the lead 15 (please refer 6a) , In a preferred embodiment according to 6b is the projection brake pad side with a bevel 23 provided for further reduction of the resistance during locking. On the opposite side is the projection 15 mechanically machined for exact support and improved support in case of load.

7
Further embodiments of the Lüftspielfeder 7 be using a separate locking element 18 on the caliper 6 fixed. The blocking element 18 is formed in the embodiment shown as a Spreizpin. The interface-side end of the spring body 9 has an axially directed breakthrough for this purpose 17 , which in installation position with a corresponding housing breakthrough 19 in the caliper 6 flees. After inserting the brake pad 2 with the air spring attached to it 7 in the caliper 6 becomes the blocking element 18 through both aligned breakthroughs 17 . 19 simply put through until it is at the end of the housing breakthrough 19 latched to form an axially acting undercut.

The three in the views a ) to c ) exemplified embodiments of the Lüftspielfeder 7 differ for the purpose of especially in the needs-based design of interface-side end of the spring body 9 ,

The interface-side end of the spring body 9 in the embodiment according to 7a is designed cranked. In the embodiment according to 7b it's just trained right now.

The embodiment of the Lüftspielfeder 7 to 7c is particularly safe, designed for example for high load cases or vibration levels and this additionally with barbs 24 . 24 ' equipped, which has a corresponding sprue or other suitable shape on the brake caliper 6 snapping behind.

8th
The embodiment according to 8th acts in principle analogous to the comments 7 with the difference that instead of a cylindrical Spreizpins a specially shaped Spreizklammer as a blocking element 18 serves. The expansion clamp has transversely to the push-through protruding stop elements 25 , which for attachment to the air spring 7 serve as well as transversely to the push-through direction elastically resilient locking elements 20 . 20 ' , which after passing through the housing breakthrough 19 rebound and form an axial undercut.

9
The design of the air spring 7 to 9 forms a kind integrally integratively formed hybrid of the air spring 7 according to 8th with the associated expansion clip. The interface-side end of the spring body 9 is for insertion through one in the caliper 6 axially aligned housing breakthrough 19 in the brake pad 2 bent opposite axial direction and with a ( 9a) or more ( 9b) integrated, formed transversely to the push-through resilient locking element 20 Provided. Their mode of action corresponds to the spreading clamp described above.

10 and 11
The 10 clarified in conjunction with the associated force-displacement diagram 11 different characteristic load conditions of the Lüftspielfeder 7 , The in the 10 shown operating points are in the 11 marked accordingly.

In an unloaded initial condition prior to attachment to the brake pad 2 ( 10a , see also 3 ), is the interface 11 the spring tab 10 in its zero position, so that the deflection and spring force are also zero.

When mounting the air spring 7 or attachment of the spring clip 10 with their interface 11 on the brake pad 2 , forms the spring body 9 an abutment, opposite the spring tab 10 while reducing the Vorspannauslenkung Sv and simultaneous construction of a biasing force Fv to the brake pad 2 elastically pressed and with this, forming the force application point 8th riveted ( 10b) ,

In addition to the preferred riveting shown here, other joining methods are also permissible within the invention.

For a brake pad mounted ready for use 2 with on the caliper 6 attached interface 12 (( 10c , see also 2 ) is the spring tab 10 to their minimum operating deflection sm deflected and exerts on the brake pad 2 at the force attack point 8th a minimal operating force Fb min out.

As the friction lining wear increases, the operational deflection increases sb and thus also the operating power Fb the air spring 7 , up to their maximum permissible values Fb Max . sb Max ,

By relatively long trained spring arms (spring body 9 and spring tab 10 ) is the resulting force curve of the Lüftspielfeder 7 linear and flat over the entire operating path.

LIST OF REFERENCE NUMBERS

1

Rückstellbefederungssystem

2

brake lining

3

friction lining

4

Reibbelagträgerplatte

5

Automotive disc brake

6

caliper

7

Lüftspielfeder

8th

Force application point

9

spring body

10

spring shackle

11

interface

12

interface

13

carrying arms

14

breakthrough

15

head Start

16

slide ramp

17

breakthrough

18

fastener

19

Case breaking

20

locking element

21

brake pistons

22

Piston contact surfaces

23

bevel

24

barbs

25

stop element

Fv

preload force

Fb min

minimum operating power

Fb max

maximum operating power

M

central axis

Sv

Vorspannauslenkung

sm

minimal operating deflection

sb

Betriebsauslenkung

Sb max

maximum operating deflection

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102017222639 A1 [0008]

Claims (16)

Reset mastering system (1) for active adjustment of a clearance in a motor vehicle disc brake (5) comprising at least one brake lining (2) with a friction lining carrier plate (4) affixed on one side with a friction lining (3) and a clearance spring (7) axially supporting the brake lining (2) acted upon in its return direction characterized in that the Lüftspielfeder (7) explicitly the brake pad (2) assigned as a tension spring is formed, which between the brake pad (2) and a brake caliper (6) is stretched elastically and at least one force application point (8) with the brake pad (2) permanently captive, in particular permanently connected and wherein the force application point (8) on a friction lining (3) facing away from the Reibbelagträgerplatte (4) is arranged. Reset command system (1) according to Claim 1 characterized in that the Lüftspielfeder (7) completely on a side facing away from the friction lining (3) side of the friction lining carrier plate (4) is arranged. Reset command system (1) according to Claim 1 or 2 characterized in that the Lüftspielfeder (7) has a spring body (9)) and an end connected to the spring body (9) and bent from this spring tab (10), wherein the spring body (9) and the spring tab (10) on its Junction opposite end each having an interface (11,12) for a force-transmitting attachment to another component. Reset command system (1) according to Claim 3 characterized in that the spring tab (10) is bent in an unloaded initial state prior to assembly on the brake pad (2) relative to the spring body (9) in a brake pad (2) opposite axial direction, so that for mounting on the brake pad (2) the spring body (9) forms an abutment against which the spring tab (10) must be elastically pressed while building up a biasing force (Fv) on the brake lining (2). Returning mounting system (1) according to at least one of Claims 3 or 4 characterized in that the spring body (9) at least partially two circumferentially spaced support arms (13) and the spring tab (10) between the two support arms (13) and is connected to both. Returning mounting system (1) according to at least one of Claims 3 to 5 characterized in that the end-side interface (11) on the spring tab (10) is designed as a fastening eye. Returning mounting system (1) according to at least one of Claims 3 to 6 characterized in that the interface-side end of the spring body (9) in the brake lining (2) opposite axial direction bent and provided with a radially directed opening (14) for locking on a brake caliper (6) formed radially directed projection (15) is. Reset command system (1) according to Claim 7 characterized in that at the interface-side end of the spring body (9) a sliding ramp (16) for sliding on the projection (15) is formed during Verrastungsvorgang. Returning mounting system (1) according to at least one of Claims 3 to 6 characterized in that the interface-side end of the spring body (9) has an axially directed opening (17) for insertion with a separate locking element (18) which is formed in alignment with a corresponding housing opening (19) in the brake caliper (6). Returning mounting system (1) according to at least one of Claims 3 to 6 characterized in that the interface-side end of the spring body (9) for insertion through a in the brake caliper (6) axially aligned housing aperture (19) in the brake lining (2) opposite axial direction bent and integrated with at least one and radially resiliently formed axially acting locking element (20) is provided. Returning mounting system (1) according to at least one of the preceding claims, characterized in that the force application point (8) of the Lüftspielfeder (7) is provided substantially in a central position on the Reibbelagträgerplatte (4), in particular substantially in the region of a Reibflächenschwerpunktes. Lüftspielfeder (7) for a restoring spring system (1) according to at least one of the preceding claims. Brake lining (2) for a restoring spring system (1) according to at least one of the preceding claims. Brake lining (2) after Claim 12 characterized in that the brake lining (2) is provided for simultaneous application by at least two brake pistons (21, 21 ') and the force application point (8) of the Lüftspielfeder (7) in a region between the piston contact surfaces (22, 22') is arranged. Motor vehicle disc brake (5) comprising at least one restoring spring system (1) according to at least one of the preceding claims, characterized in that the vehicle disc brake (5) as a fixed caliper brake with two brake pads (2,2 ') and at least two brake discs on both sides and counter-acting brake piston (21 , 21 ") is formed. Motor vehicle disc brake (5) comprising at least one restoring spring system (1) according to at least one of the preceding claims, characterized in that the motor vehicle disc brake (5) is provided as a fist caliper brake with two brake linings (2,2 ') an axially displaceably arranged caliper (6) the brake caliper (6) is formed on one side of a brake disc brake piston.

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