DE102013103064A1 - Adjustment device for a disc brake and a corresponding disc brake - Google Patents

Abstract

An adjusting device (11) for adjusting friction surface wear on the brake lining and brake disc of a disc brake, in particular for a motor vehicle, with a brake caliper (4) and a clamping device, preferably with a rotary brake lever, the adjusting device (11) on the drive side with the clamping device, preferably with the The rotary brake lever, which can be coupled to a spindle unit of the disc brake on the output side, comprises a) axially on both sides of a drive element (8b) each a rolling element arrangement, one of which is designed as a rolling bearing and one as a freewheel and overload clutch device (20), b) the rolling bearing as a component a collar bushing (16), c) the overrunning and overload clutch device (20) coupled to a sleeve with tension spring and at least one output element (18), and d) an adjuster shaft (11a), around which the collar bushing (16), the drive element (8b), the overrunning clutch and overload clutch device (20) and the sleeve are arranged with a tension spring. The adjuster shaft (11a) is designed with a spherical cap (11f) which is in contact with the collar bushing (16), whereby the collar bushing (16), the drive element (8b), the overrunning and overload clutch device (20) and the sleeve pass through the tension springs on the adjuster shaft (11a) are kept pretensioned against the spherical cap (11f). The adjusting device (11) can be fixedly connected by means of the adjusting shaft (11a) to the brake caliper (4) of the disk brake (1) to be assigned by means of at least one fastening element (19). The adjusting device (11) has a disc brake.

Description

The invention relates to an adjusting device for a disc brake, in particular for a motor vehicle, according to the preamble of claim 1. The invention relates to a corresponding disc brake.

Vehicles and certain technical devices often use friction brakes to convert kinetic energy. Preference is given here, especially in the passenger car and commercial vehicle sector, the disc brake. In the typical design of a disc brake, this consists of a caliper together with internal mechanics, usually two brake pads and the brake disc. On the inner mechanics, the cylinder forces are introduced via a pneumatically actuated cylinder, reinforced by an eccentric and transmitted as clamping force via threaded spindles on the brake pads and brake disc, which is compensated by the threaded spindles wear of the brake disc and brake pads.

The application forces act on both brake pads on the brake disc, which undergoes a delay of the rotational movement in dependence on the amount of the application force. This delay is largely determined by the coefficient of friction between the brake disc and brake pad. Since the pads are structurally designed as wearing parts and the coefficients of friction are dependent on the strength, they are generally softer than the brake disc, i. the pads learn about their service life, a change in the lining thickness, they wear out. From this covering strength change, there is the necessity that a wear adjustment compensates for the change and thus sets a constant clearance.

An example of a wear adjuster describes the document DE 10 2004 037 771 A1 , In this case, a drive rotational movement, for example, from a torque limiting device, for example, with a ball ramp, via a continuously acting clutch (slip clutch) forwarded to an adjusting spindle of a plunger. The air play is adjusted continuously.

Such a wear adjusting device is usually used and fixed with a bearing plate in a recess provided for this purpose on the brake caliper. A spherical disk makes it possible to compensate for a movement of a Nachstellerwelle due to so-called bridge pivoting. This spherical washer can slide in the bearing disk.

The object of the present invention is to provide an improved adjusting device.

Another object is to provide an improved disc brake. The object is achieved by an adjusting device with the features of claim 1, and a disc brake having the features of claim 11.

There is provided an adjusting device, which has a simplified structure, as well as facilitated installation and simplified attachment allows.

An adjusting device according to the invention for adjusting a Reibflächenverschleißes brake pad and brake disc of a disc brake, in particular for a motor vehicle, with a caliper and a brake application device, preferably with a brake rotary lever, wherein the adjusting device on the drive side with the application device, preferably with the brake rotary lever, and the output side with a spindle unit Disc brake can be coupled comprises axially on both sides of a drive element in each case a rolling element arrangement, one of which is designed as a rolling bearing and a freewheel and overload clutch device, the rolling bearing as part of a collar, the freewheel and overload clutch device coupled to a sleeve with tension spring and at least one output element , and a Nachstellerwelle around which the collar, the drive element, the freewheel and overload clutch device and the sleeve arranged with tension spring are. The Nachstellerwelle is formed with a spherical cap, which is in contact with the collar bushing, wherein the collar bushing, the drive element, the freewheel and overload clutch device and the sleeve are held biased by the tension spring on the Nachstellerwelle against the spherical cap. The adjusting device can be fixedly connected by the adjuster shaft to the caliper of the disc brake to be assigned by means of at least one fastening element.

The adjusting device has a smaller number of components than the prior art. All functional units are arranged around the Nachstellerwelle and held biased against the spherical cap, wherein the functional units can pivot about the spherical cap.

The adjustment of a clearance can be made independently of the location of these functional units, i. within the framework of the swivel option.

A disc brake according to the invention, preferably compressed air actuated, in particular for a Motor vehicle, with a brake caliper, a brake application device, preferably with a brake rotary lever, at least one spindle unit, and at least one adjusting device, which is coupled to the application device, preferably with the brake rotary lever, has the adjusting device according to the invention.

In one embodiment, the Nachstellerwelle on a drive end, which is provided with a circular cylindrical bearing portion for use in a corresponding with the bearing portion receiving the caliper of the assigned disc brake. Thus, a simple insertion of the adjusting device before mounting in the caliper is possible.

In a further embodiment it is provided that the circular cylindrical bearing portion is arranged on a collar of the adjuster shaft, wherein the collar is provided with a bearing surface for resting on a support portion of the caliper of the disc brake to be assigned. As a result, a simple Auflagemöglichkeit the Nachstellerwelle is created on the inside of the caliper.

In yet another embodiment, the bearing portion of the adjuster shaft is provided with a central attachment portion, preferably an internal thread, for attachment of the adjuster shaft to the adjuster on the caliper of the disc brake to be assigned. For a simple mounting option is achieved.

An embodiment provides that the Nachstellerwelle on the caliper of the assigned disc brake can be fastened such that the at least one fastener from outside of the caliper through a mounting opening of the caliper with the central mounting portion of the Nachstellerwelle cooperates so that the Nachstellerwelle with its collar against the support portion the caliper comes to rest on this, wherein the bearing portion of the Nachstellerwelle is received and centered in the receptacle of the caliper.

The mounting hole and the support for the bearing portion of the adjuster shaft for inserting and fixing the adjusting device in the caliper of the disc brake, can be reduced by about 90%, in contrast to a mounting hole of the prior art. As a result, the brake caliper of the disc brake is significantly relieved structurally.

In yet another embodiment, it is provided that the at least one fastening element is coupled to a securing / sealing element for sealing the fastening opening and for securing the at least one fastening element. The seal of the caliper may now be a simple radial seal, unlike a lid seal of the prior art. It can also be integrated, for example, in the attachment to the fastener.

It is provided that the at least one fastening element is designed as a screw. As a result, a simple and inexpensive attachment is possible.

In yet another embodiment, the flanged bushing has a dome-shaped bearing surface, which corresponds to the spherical cap and in which the spherical cap is accommodated. This allows a gimbal bearing that can compensate for the pivoting movements of the functional units of the adjusting device.

It is envisaged that the bearing surface corresponding to the spherical cap of the collar bushing has at least two radially opposite spherical recesses for each interaction with a nose of the Nachstellerwelle. The noses can e.g. be mounted laterally on the spherical cap. They are firmly connected to the Nachstellerwelle and allow in cooperation with the spherical recesses in the collar bushing a radial fixation of the functional units of the adjusting device on the Nachstellerwelle. However, the lugs allow the above-described pivoting movements of the functional units of the adjusting device to the fixed Nachstellerwelle.

In a further embodiment, the spherical cap is integrally formed with the adjuster shaft. This makes a reduction of components possible. Of course, however, an embodiment is possible in which the spherical cap is applied as a separate component on the Nachstellerwelle.

In a further embodiment of the disc brake, this has two spindle units and a synchronization unit. In this case, the adjusting device is inserted on or in the one of the two spindle units of the disc brake.

Alternatively, the adjusting device can also be arranged so that it is coupled via the synchronization unit with the at least one spindle unit.

In yet another embodiment, it is provided that the adjusting device is installed by a lining shaft side of the caliper and connected to the caliper so firmly, and that the adjuster shaft of the adjusting device is fixedly mounted with the at least one fastener to the caliper. So not only a number of components can be reduced, but an assembly can also be simplified.

The invention will now be described with reference to an exemplary embodiment with reference to the accompanying drawings. Hereby show:

1 a schematic partial sectional view of a conventional disc brake with a wear adjusting device;

2 a schematic longitudinal sectional view of a conventional adjustment of the disc brake after 1 ;

3 a schematic plan view of an attachment of the adjusting device according to 2 ;

4 a schematic longitudinal sectional view of an embodiment of an adjusting device according to the invention;

5 a schematic perspective view of a Nachstellerwelle the embodiment of the adjusting device according to 4 ;

6 a schematic perspective view of a collar bushing of the embodiment of the adjusting device according to 4 ; and

7 a detailed representation of the schematic longitudinal sectional view 4 ,

1 shows a schematic partial sectional view of a conventional disc brake 1 in a plan view with a wear adjusting device 9 ,

The disc brake 1 has a brake disc 2 with a brake disc axis 2a on. The brake disc 2 is from a, here designed as a floating caliper caliper 4 overlapped. On both sides of the brake disc 2 is each a brake pad 3 each with a brake pad carrier 3a arranged. The disc brake 1 is here as a two-stamp brake with two spindle units 5 and 5 ' each with a threaded temple 6 . 6 ' educated. In the 1 right side of the disc brake 1 is referred to as Zuspannseite A and the left-hand side is referred to as lining shaft side B.

The application-side brake pad carrier 3a stands with the spindle units 5 . 5 ' at the ends of the thread dies 6 . 6 ' over plungers 6a . 6'a in connection. The other, brake pad carrier 3a also becomes reaction-side brake pad carrier 3a called and is on the other side of the brake disc 2 in the caliper 4 established. The threaded pistons 6 . 6 ' are each in a traverse 17 arranged in threads rotatable. The traverse 7 is also called a bridge.

The traverse 17 and thus the threaded pistons 6 . 6 ' are from a Zuspannvorrichtung, here a brake rotary lever 7 with a pivot axis perpendicular to a rotational axis of the brake disc 2 actuated. The brake swivel lever 7 has a unspecified lever body, which with the crossbar 17 interacts.

The traverse 17 is in the direction of the brake disc axis 2a through the brake lever 7 adjustable. A movement on the brake disc 2 is called the application movement, and the movement in the opposite direction is called release movement. An unspecified return spring is in the middle of the traverse 17 in a corresponding recess on the lining side of the traverse 17 recorded and supported on the caliper 4 from. By means of the return spring, the traverse 17 in the release movement in the in 1 shown dissolved position of the disc brake 1 adjusted.

A distance between the brake pads 3 and the brake disc 2 in the released position is called a clearance. As a result of lining and disc wear this clearance is larger. If this is not compensated, the disc brake may 1 do not reach their peak performance, since an actuating stroke of the actuating mechanism, ie here the operating stroke or a pivot angle of the brake lever 7 , is no longer sufficient.

The disc brake 1 can have different power drives. The rotary lever 7 is pneumatically actuated here, for example. On the structure and function of a pneumatic disc brake 1 will be on the appropriate description of DE 197 29 024 C1 directed.

The wear adjuster 9 is for wear adjustment of a predetermined clearance, which is referred to as nominal clearance, formed. The term "reenactment" is to be understood as a clearance reduction. The predetermined clearance is determined by the geometry of the disc brake 1 determines and has a so-called constructive clearance. In other words, the wear adjuster 9 Reduces an existing clearance, if this is too big in relation to a predetermined clearance.

The wear adjuster 9 here includes an adjustment 11 and a driver 12 , The adjusting device 11 is at the one spindle unit 5 coaxial with this, to the threaded temple 6 and a Nachstellerachse 5a arranged. In this embodiment, the adjusting device 11 in the threaded temple 6 used. By means of a bearing disc 15 ( 2 . 3 ) is the adjuster 11 in the caliper 4 supported or used. This will be related below 2 and 3 described in more detail.

The driver 12 is coaxial with the other spindle unit 5 ' , to the threaded temple 6 ' and a driver axle 5 'a arranged. The driver 12 is here in the threaded temple 6 ' used and is in operative connection with this.

The Nachstellerachse 5a , the driving axle 5 'a and the brake disk axis 2a are arranged parallel to each other.

The adjusting device 11 the wear adjusting device 9 is about a drive 8th with the brake lever 7 in cooperation. The drive 8th includes an actuator 8a , which with the brake lever 7 is connected, and a drive element 8b the adjusting device 11 ,

The adjusting device 11 and the driver 12 are by a synchronization unit 10 coupled such that a twisting movement of the threaded temple 6 around the night dish axis 5a a twisting movement of the thread stamp 6 ' around the driving axle 5 'a causes and vice versa. The synchronization unit 10 is here at a zuspannseitigen top of the caliper 4 arranged and covered by a lid 4a covered. The synchronization unit 10 here includes a synchronous wheel 13a that with the threaded punch 6 the one spindle unit 5 and with the trailer 11 is coupled, another synchronous wheel 13'a that with the threaded punch 6 ' the other spindle unit 5 ' and with the driver 12 coupled, and a synchronizer 13 with which the synchronizer wheels 13a and 13'a are coupled. In this embodiment, the synchronizer wheels 13a . 13'a Sprockets and the synchronizer 13 a chain. This is a synchronous movement of the threaded temple 6 . 6 ' the spindle units 5 and 5 ' during wear adjustment processes (drive by the adjuster 11 ) and settings during maintenance work, eg brake lining change, (manual drive eg via an operating end of the driver 12 or / and a drive end 11b the adjusting device 11 as 2 shows) guaranteed.

In 2 is a schematic longitudinal sectional view of a conventional adjuster 11 the disc brake 1 to 1 shown. 3 shows a schematic plan view of an attachment of the adjusting device 11 to 2

The adjusting device 11 has the central adjuster shaft 11a with an upper, zuspannseitigen drive end 11b and a lower output end 11c on. The drive end 11b is here provided with an unspecified tool approach. Below the drive end 11b is a unspecified collar the Nachstellerwelle 11a arranged, which on a spherical disk 14 resting in an underlying bearing disc 15 in one with the spherical shape of the spherical disk 14 corresponding receptacle is stored. The bearing disc 15 lies on a collar 16 on, with which the bearing disc 15 is connected against rotation in unspecified manner.

The adjusting device 11 is in the caliper 4 (please refer 1 ) fixed axially and radially. For this purpose, the adjusting device 11 with the bearing disc 15 in a designated recess on the caliper 4 inserted from the Zuspannseite A ago. Through an actuating stroke with the brake rotary lever 7 becomes the clearance between the drive element 8b , which is also referred to as a shift fork) and the actuator 8a (also called lever pin) of the drive 8th set. Then the bearing disk 15 in the caliper 4 by means of a ball 15 caulked. This is in 3 shown.

A drive movement of the adjusting device 11 through the drive 8th on the drive element 8b is at a wear adjustment by unspecified components and functional groups of the adjuster 11 , eg freewheeling and overloading devices on Nachstellerabtriebselemente 18 transfer. To describe the components and functional groups of the adjusting device 11 will on the document DE 10 2004 037 771 A1 directed.

The adjusting device 11 is with the adjuster output elements 18 with the threaded spindle 6 coupled and inserted into this. Because the threaded spindle 6 in the traverse 17 is screwed in, the movements of the traverse 17 , such as pivoting, on the threaded spindle 6 and also on the Nachsteller 11 or the Nachstellerwelle 11a transfer. For this purpose, two arrows are given, which should symbolize exemplary movement directions BW and BW '. In the bearing disc 15 used is as described above, the spherical disk 14 , which makes it possible for these movements the Nachstellerwelle 11a due to truss swings balance by the spherical disc 14 in the associated receptacle of the bearing disc 15 can slide.

4 shows a schematic longitudinal sectional view of an embodiment of an adjusting device according to the invention 11 represents. 5 shows a schematic perspective view of a Nachstellerwelle 11a of the embodiment of the adjusting device according to the invention 11 to 4 , In 6 is a schematic perspective view of a collar bushing 16 of the embodiment of adjusting device according to the invention 11 to 4 shown. 7 shows a detailed representation of the schematic longitudinal sectional view 4 ,

With the term "top" or "top" in connection with the adjuster 11 and their components is meant the side or the area which in the 4 - 7 is arranged in the drawings above and the attachment of the Nachtstelleinrichtung 11 in the caliper 4 assigned.

In this embodiment, the adjusting device according to the invention 11 in contrast to the usual adjusting device ( 1 - 3 ) for the installation of the lining shaft side B of the disc brake 1 ( 1 ) ago. This is the Nachstellerwelle 11a by means of a screw (fastener 19 ) on the caliper 4 fixed, which is explained in more detail below. On the output side engage the Nachstellerabtriebselemente 18 in one on the traverse 17 rotatably mounted synchronous wheel 13a the synchronization unit, not shown here 10 one. This will experience the adjustment 11 again the pivoting movement of the traverse 17 ,

The Nachstellerwelle 11a in turn has a spherical cap 11f on which now can take place the pivoting movement described above. The Nachstellerwelle 11a will be described in more detail below.

The embodiment of the adjusting device according to the invention 11 is here for a central arrangement between the spindle units 5 . 5 ' intended. The threaded spindles 6 . 6 ' are doing their own synchronous wheels through the synchronization unit 10 with each other, which is not shown but is easy to imagine, and in this way with the adjustment 11 coupled. In this case, the output-side coupling of the adjusting device 11 by the Nachstellerabtriebselemente 18 with a synchronous wheel 13a intended. this shows 4 , where also a lever storage 7a on the traverse 17 next to the adjusting device 11 is indicated. The associated, not shown here, but easily imaginable, synchronization unit 10 to the synchronous wheel 13a is here on the Traverse 17 arranged. Here are the synchronous wheel 13a that with the adjuster 11 cooperates, as well as the synchronous wheels of the threaded spindles, not shown 6 . 6 ' formed as gears, wherein the synchronization unit 10 may be a Stirnzahnradgetriebe.

Although the illustrated embodiment of the adjusting device according to the invention 11 not for insertion in threaded spindles 6 . 6 ' is designed, it is shown only as an example and is intended for other types of adjustment 11 apply, such as for insertion in threaded spindles 6 . 6 ' and also for readjustments on the ends of the threaded spindles 6 . 6 ' and on the outside of the circumference of the threaded spindles 6 . 6 ' are arranged and wrap these partially. Of course, this also applies to disc brakes 1 with only one threaded spindle 6 . 6 ' without synchronization unit 10 ,

The adjusting device according to the invention 11 includes the central adjuster shaft 11a , a collar bushing arranged thereon 16 , a drive element 8b , a freewheel and overload clutch device 20 between the drive element 8b and the Nachstellerabtriebselementen 18 , and a fastener 19 for fixing the adjusting device 11 on the caliper 4 the disc brake 1 ,

The Nachstellerwelle 11a has a drive end 11b on, which with a circular cylindrical bearing section 11d is trained on a collar 11e is arranged. An outer diameter of the bearing section 11d is about three-quarters of the size of the outer diameter of the collar 11e ,

An output end 11c the Nachstellerwelle 11a is formed according to the associated, not further explained components. To describe these components and functional groups of the adjusting device 11 is also on the document DE 10 2004 037 771 A1 directed. In the in 4 the embodiment shown is the output end 11c larger in diameter than the previously arranged portion of the Nachstellerwelle 11a to form an axial stop for an unspecified tension spring or tension spring plate. Of course, this can also be realized, for example, by a shaft securing ring. To the tension spring around a unspecified sleeve is arranged, which at its upper end with the freewheel and overload clutch device 20 is coupled. The lower end of this sleeve is with the Nachstellerabtriebselement 18 connected. The Nachstellerabtriebselement 18 is in this example a kind of gear with external teeth, with an internal toothing of the synchronizer 13a engaged.

The storage section 11d is for use in a recording 4c , here a receiving bore, of the caliper 4 provided, one to the drive end 11b the Nachstellerwelle 11a pointing support surface 11i of the collar 11e on a bearing shaft side B facing support section 4d the inside of the caliper 4 is intended for circulation. This poses 7 in an enlarged view.

Furthermore, the storage section 11d with a central attachment section 11g for fastening the adjuster shaft 11a with the adjusting device 11 on the caliper 4 Mistake. The attachment section 11g is here as one Internal thread to interact with a thread of a screw, here as a fastener 19 is used, trained.

The adjusting device 11 is used as already mentioned by the lining shaft side B ago, wherein the bearing section 11d the Nachstellerwelle 11a in the recording 4c the caliper 4 is recorded. The fastener 19 is from the outside through a mounting hole 4b the caliper 4 here coaxial with the recording 4c and with the adjuster axle 5a is arranged, guided and in the internal thread of the attachment portion 11g of the storage section 11d the Nachstellerwelle 11a screwed. By tightening the fastener 19 becomes the adjuster shaft 11a on the inside of the caliper 4 fixed, with the support surface 11i of the collar 11d the Nachstellerwelle 11a against the support section 4c the caliper 4 is tightened and an axial fixation of the Nachstellerwelle 11a forms. The storage section 11d works with the recording 4c together as a centering of the adjuster shaft 11a ,

Between the fastener 19 and the caliper 4 is a safety / sealing element 19a provided, which is a seal of the mounting hole 4b and at the same time a fuse as a fastener 19 serving screw causes. But it is also possible that the screw head is formed with an integrated seal including fuse. Of course, fuse function and sealing function may be formed separately by various suitable elements.

Below the collar 11e is the spherical cap 11f arranged, whose shape is hemispherical, with this hemispherical shape to the output end 11c the Nachstellerwelle 11a has. The spherical cap 11f is like the collar 11e and the storage section 11d integral with the adjuster shaft 11a educated.

Below the collar 11e are radially opposite side two lugs 11h molded, which with both the bottom of the collar 11e as well as with the upper part of the spherical cap 11f are connected. The noses 11h are radially from the surface of the spherical cap 11f and extend radially outward. These noses 11h and the spherical cap 11f act with the collar bush 16 together.

The collar bush 16 is a component of the adjusting device 11 and coaxial to this and thus to the Nachstellerachse 5a and the adjuster shaft 11a arranged in the assembled state. The collar bush 16 , what a 6 is shown has a flange 16a and an associated body 16b on. The flange 16a is on top of the body 16b arranged. In the body 16b is a circular cylindrical inner bore 16'e formed, which extends from bottom to top and in the region of the flange 16a in a dome-shaped storage area 16e passes. The dome-shaped storage area 16e communicates with the spherical cap 11f the Nachstellerwelle 11a ,

In an upper end region of the dome-shaped bearing surface 16e this is provided with a chamfer, in which case two radially opposite spherical recesses 16d are arranged, each with a nose 11h the Nachstellerwelle 11a communicate.

The underside of the flange 16a is as a tread 16f formed for balls of an unspecified thrust bearing, which is best in 7 can be seen. This thrust bearing is in the document DE 10 2004 037 771 A1 described. On the top of the flange 16a the collar bushing here six circular cylindrical pin with low height are formed circumferentially.

In the assembled state, the upper region is the attachment area of the adjustment device 11 in 7 shown enlarged.

All functional components or units of the adjusting device 11 are coaxial to the Nachstellerachse 5a around the adjuster shaft 11a arranged around, wherein the fastening element 19 the adjusting device 11 on the caliper 4 attached by the adjuster shaft 11a in the manner already described above on the brake caliper 4 fixed.

The Nachstellerwelle 11a extends through the inner bore 16'e the collar bush 16 , wherein the dome-shaped bearing surface 16e on the outer surface of the spherical cap 11f the Nachstellerwelle 11a is applied. The noses 11h the Nachstellerwelle 11a grab it in the spherical recesses 16d in the upper edge region of the tread 16e a positive fit.

The balls of the thrust bearing are below the flange 16a the collar bush 16 in the tread 16f arranged. The flange forms 16a an upper bearing ring of the thrust bearing, wherein the top of the drive element 8b that around the body 16b the collar bush 16 is arranged around, with the balls of the thrust bearing in contact. Thus, the drive element forms 8b a lower bearing ring of the thrust bearing. The drive element 8b stands with the freewheeling and overloading device 9 in operative connection, which also partly around the lower part of the body 16b the collar bush 16 around and out of the inner bore 16'e of the body 16b downward protruding Nachstellerwelle 11a is arranged around.

This is followed in the direction of the output end 11c the Nachstellerwelle 11a not described in detail, with the output elements 18 coupled or connected functional components. Between the output end 11c and one of these functional components, which is almost the bottom half of the adjuster shaft 11a and the output end 11c surrounds, the tension spring is arranged under prestress, which all components against the spherical cap 11f holds and pretensions.

The dome-shaped storage area 16e and the spherical cap 11f form a kind of gimbal bearing to which the pivoting movements of the adjusting device described above 11 caused by the pivoting movements of the traverse 17 can take place. In this case, all functional components of the adjusting device 11 including the collar bush 16 , which are held together due to the bias of the tension spring, together around the spherical cap 11f the on the caliper 4 fixed and fixed adjuster shaft 11a swing.

The in the spherical recesses 16d the collar bush 16 engaging lateral noses 11h the Nachstellerwelle 11a form a radial fixation of the above-described functional units of the adjusting device 11 , At the same time let the noses 11h However, the above-described pivoting movements of the adjusting device 11 around the fixed adjuster shaft 11a to.

The function of the adjusting device 11 to adjust the clearance can, regardless of the position of the adjusting device 11 , ie the functional components around the fixed adjuster shaft 11a around, done.

The mounting hole 4b , here as a through hole through the wall of the caliper 4 is formed, and the recording 4c for the storage section 11d the Nachstellerwelle 11a for inserting and fixing the adjusting device 11 in the disc brake 1 , can be reduced by about 90%, in contrast to a mounting hole of the prior art. This will cause the caliper 4 significantly relieved structurally. The seal of the caliper 4 can now unlike the seal of the lid 4a ( 1 ) a simple radial seal (reference numeral 19a ) or in the attachment to the fastener 19 be integrated, as already described above.

The wear adjuster 9 with the adjusting device 11 is designed primarily for wear adjustment for pneumatically actuated disc brakes in the commercial vehicle sector, but can also be used in all other applications where wear compensation is necessary.

The embodiments described above do not limit the invention. It is modifiable within the scope of the appended claims.

The adjusting device 11 can not only be formed in the embodiment shown, but it is, for example, both exterior and interior designs possible. Under external construction is to be understood that the adjusting device 11 around a threaded spindle 6 . 6 ' a spindle unit 5 . 5 ' around or on it can be placed. By internal construction is meant that the adjuster 11 in a spindle unit 5 . 5 ' eg in a threaded spindle 6 . 6 ' as in 1 shown is used.

LIST OF REFERENCE NUMBERS

1

 disc brake

2

 brake disc

2a

 Bremscheibenachse

3

 brake lining

3a

 Brake lining carrier

4

 caliper

4a

 cover

4b

 fastening opening

4c

 admission

4d

 bearing section

5, 5 '

 Spindles

5a

 Nachstellerachse

5 'a

 driver axle

6, 6 '

 thread temple

6a, 6'a

 Pressure piece

7

 Brake Lever

7a

 lever bearing

8th

 drive

8a

 actuator

8b

 driving element

9

 up wear

10

 synchronization unit

11

 readjustment

11a

 Nachstellerwelle

11b

 drive end

11c

 output end

11d

 bearing section

11e

 collar

11f

 spherical cap

11g

 attachment section

11h

 nose

11i

 bearing surface

12

 takeaway

12a

 clutch shaft

13

 synchronous means

13a, 13a '

 Synchronrad

14

 Kugelscheibe

15

 bearing disk

15a

 Bullet

16

 collar bushing

16a

 flange

16b

 body

16c

 receiving portion

16d

 recess

16e

 storage area

16'e

 internal bore

16f

 tread

17

 traverse

18

 Nachstellerabtriebselement

19

 fastener

19a

 Backup / sealing element

20

 Freewheel and overload clutch device

A

 application side

B

 Lining shaft side

BW, BW '

 movement direction

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 102004037771 A1 [0004, 0050, 0060, 0069]
• DE 19729024 C1 [0040]

Claims (14)

Adjustment device ( 11 ) for the adjustment of a Reibflächenverschleißes on brake pad ( 3 ) and brake disc ( 2 ) a disc brake ( 1 ), in particular for a motor vehicle, with a caliper ( 4 ) and an application device, preferably with a brake rotary lever ( 7 ), the adjusting device ( 11 ) on the drive side with the application device, preferably with the brake rotation lever ( 7 ), and on the output side with a spindle unit ( 5 . 5 ' ) the disc brake ( 1 ), wherein a) axially on both sides of a drive element ( 8b ) is arranged in each case a Wälzkörperanordnung, one of which as a rolling bearing and a freewheeling and overload clutch device ( 20 ) is formed, b) the rolling bearing part of a collar bushing ( 16 ), c) the freewheel and overload clutch device ( 20 ) with a sleeve with tension spring and at least one output element ( 18 ) is coupled, and d) a Nachstellerwelle ( 11a ) around which the bushing ( 16 ), the drive element ( 8b ), the freewheel and overload clutch device ( 20 ) and the sleeve are arranged with tension spring, characterized in that e) the Nachstellerwelle ( 11a ) with a spherical cap ( 11f ) is formed, which with the collar bushing ( 16 ) is in contact with the collar bush ( 16 ), the drive element ( 8b ), the freewheel and overload clutch device ( 20 ) and the sleeve by the tension spring on the Nachstellerwelle ( 11a ) against the spherical cap ( 11f ) and that f) the adjusting device ( 11 ) by the Nachstellerwelle ( 11a ) on the caliper ( 4 ) of the disc brake to be assigned ( 1 ) by means of at least one fastening element ( 19 ) is fixedly connected. Adjustment device ( 11 ) according to claim 2, characterized in that the Nachstellerwelle ( 11a ) a drive end ( 11b ), which with a circular cylindrical bearing portion ( 11d ) for use in a bearing section ( 11d ) corresponding recording ( 4c ) of the caliper ( 4 ) of the disc brake to be assigned ( 1 ) is provided. Adjustment device ( 11 ) according to claim 2, characterized in that the circular cylindrical bearing section ( 11d ) on a collar ( 11e ) of the adjuster shaft ( 11a ) is arranged, wherein the collar ( 11e ) with a bearing surface ( 11i ) for resting on a support section ( 4d ) of the caliper ( 4 ) of the disc brake to be assigned ( 1 ) is provided. Adjustment device ( 11 ) according to claim 3, characterized in that the bearing section ( 11d ) of the adjuster shaft ( 11a ) with a central attachment section ( 11g ) for mounting the adjuster shaft ( 11a ) with the adjusting device ( 11 ) on the caliper ( 4 ) of the disc brake to be assigned ( 1 ) is provided. Adjustment device ( 11 ) according to claim 4, characterized in that the Nachstellerwelle ( 11a ) on the caliper ( 4 ) of the disc brake to be assigned ( 1 ) is fastened in such a way that the at least one fastening element ( 19 ) from outside the brake caliper ( 4 ) through a mounting opening ( 4b ) of the caliper ( 4 ) with the central attachment section ( 11g ) of the adjuster shaft ( 11a ) cooperates so that the Nachstellerwelle ( 11a ) with her collar ( 11e ) against the support section ( 4c ) of the caliper ( 4 ) comes to the fixed support on this, wherein the bearing section ( 11d ) of the adjuster shaft ( 11a ) in the recording ( 4c ) of the caliper ( 4 ) is recorded and centered. Adjustment device ( 11 ) according to claim 5, characterized in that the at least one fastening element ( 19 ) with a securing / sealing element ( 19a ) for sealing the attachment opening ( 4b ) and for securing the at least one fastening element ( 19 ) is coupled. Adjustment device ( 11 ) according to one of the preceding claims, characterized in that the at least one fastening element ( 19 ) is designed as a screw. Adjustment device ( 11 ) according to one of the preceding claims, characterized in that the collar bush ( 16 ) a dome-shaped bearing surface ( 16e ), which with the spherical cap ( 11f ) and in which the spherical cap ( 11f ) is recorded. Adjustment device ( 11 ) according to claim 8, characterized in that the with the spherical cap ( 11f ) corresponding bearing surface ( 16e ) of the collar bushing ( 16 ) at least two radially opposite spherical recesses ( 16d ) for respective interaction with a nose ( 11h ) of the adjuster shaft ( 11a ) having. Adjustment device ( 11 ) according to claim 8 or 9, characterized in that the spherical cap ( 11f ) with the adjuster shaft ( 11a ) is integrally formed. Disc brake ( 1 ), preferably compressed air actuated, in particular for a motor vehicle, with a caliper ( 4 ), a brake application device, preferably with a brake rotary lever ( 7 ), at least one spindle unit ( 5 . 5 ' ), and at least one adjusting device ( 11 ), which with the application device, preferably with the brake rotary lever ( 7 ), thereby characterized in that the adjusting device ( 11 ) is designed according to one of the preceding claims. Disc brake ( 1 ) according to claim 11, further comprising two spindle units ( 5 . 5 ' ) and a synchronization unit ( 10 ), characterized in that the adjusting device ( 11 ) on or in the one of the two spindle units ( 5 . 5 ' ) the disc brake ( 1 ) is used. Disc brake ( 1 ) according to claim 11, characterized in that the adjusting device ( 11 ) via the synchronization unit ( 10 ) with the at least one spindle unit ( 5 . 5 ' ) is coupled. Disc brake ( 1 ) according to one of claims 11 to 13, characterized in that the adjusting device ( 11 ) from a lining shaft side (B) of the caliper ( 4 ) and with the caliper ( 4 ) is firmly connected such that the Nachstellerwelle ( 11a ) of the adjustment device ( 11 ) with the at least one fastening element ( 19 ) on the caliper ( 4 ) is fixedly mounted.

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