DE102016100964A1 - Disc brake for a commercial vehicle - Google Patents

Abstract

A disc brake for a commercial vehicle, comprising a brake caliper (1) made of cast iron and comprising a brake disc (2) in which two brake linings (3) are arranged and which has a receiving space closed by a closure plate (5) in which an application device (9) is positioned, wherein a on the brake caliper (1) releasably held, a mounting opening (4) spanning, an abutment for the spring-loaded brake pads (3) forming pad retaining bracket (6) is provided, is formed that the pad retaining bracket (6) End has a transversely to the longitudinal extension angled terminal tab (10) which is held on the closure plate (5) or the caliper (1).

Description

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

A generic disc brake is for example in the DE 10 2006 039 298 B3 disclosed. The lining retaining yoke of this disc brake serves to preload the brake linings arranged in the brake caliper, which each have a pad retaining spring fixed to a pad carrier plate, by means of which, in correspondence with the pad retaining clip, the brake pads are held under prestress in the pad shafts of a brake carrier to which the brake caliper relates is mounted on the brake disc, axially displaceable and which is connected to the vehicle.

Due to the bias of the brake linings, rattling noises otherwise occurring during driving are prevented in particular.

The an abutment to the brake pads forming lining retaining bracket spans a mounting hole of the caliper, taken over the example for wear-related pad change the brake pads from the lining shafts of the brake carrier and new brake pads are used.

In order to obtain an unobstructed access through the mounting hole, the pad retainer is releasably attached to the caliper, including this integrally formed retaining means which correspond to the pad retainer in the sense of a fuse.

One of these holding means is formed as a pocket-shaped receptacle into which one end of the pad retaining clip is inserted, while the other end is held by a securing element, for example in the form of a pin, to prevent displacement of the pad retaining clip, said pin passing through a pin formed on the caliper and rests on the top of the pad retaining bracket.

Apart from the fact that the assembly and disassembly of this pad retaining bracket is relatively complex, the preparation of the caliper, in particular the said pocket-shaped receptacle designed in terms of casting technology as a cost-effective rational production contrary.

This recording must be made either by means of a casting core in Gussrohteil or by a subsequent machining. In any case, this is possible only with a corresponding cost-intensive production effort.

As mentioned, the assembly or disassembly of the pad retaining bracket designed as relatively cumbersome, especially since this special tool must be used in many cases.

From the EP 1 588 070 B1 a disc brake is known in which the lining retaining bracket is held on the closure plate, wherein this purpose has a slot into which the lining retaining bracket is inserted or a pocket-shaped receptacle in which the lining retaining bracket rests radially secured in the direction away from the mounting opening.

The invention has for its object to further develop a disc brake of the generic type so that the assembly and disassembly of the brake pads and the caliper is easier and the manufacturing and operating costs of the disc brake are reduced overall.

This object is achieved by a disc brake having the features of claim 1 or claim 7.

According to the invention according to claim 1, the pad retaining clip on a transverse to the longitudinal extension end angled terminal tab, which is held on the closure plate or the caliper.

In a holder on the closure plate are preferably used for this purpose screws, with which the closure plate is attached to the caliper.

It is also conceivable, in particular in case of increased stresses, to attach the connecting lug of the lining holding bracket to a separate connection element, which is either held on the closure plate, preferably on the fastening screws of the closure plate to the brake caliper, or directly on the caliper, for which it has corresponding threaded bores into which Connection with the connecting element screws are screwed. By dispensing with the connection element, the connection lug can also be screwed directly to the brake caliper.

In principle, the connection element can also have a receiving slot as a separate part, into which the lining retaining yoke in the recess EP 1 588 070 B1 known meaning is inserted, said pad retaining bracket in this case has no angled terminal tab, but is formed substantially in alignment.

A further embodiment of the invention according to claim 1 provides that the terminal lug is held on pins which are pressed into the caliper, said pins outside the Cover area of the closure plate are provided.

The connecting lug may have two wings extending on both sides with respect to the lining retaining bracket, in which through holes are provided, through which either the fastening screws are guided or through which the lining retaining bracket is pushed onto the said pins in the brake caliper.

The connecting portion of the opposite end portion of the pad retaining bracket is held in a conventional manner on the brake caliper, including various connection possibilities are offered in the prior art. These include, for example, the backup by means of a locking pin which transversely penetrates a molded onto the caliper pin and rests on the brake caliper facing away from the upper side of the pad retaining bracket, which has a through opening through which the pad retaining bracket is pushed onto the pin.

Incidentally, the new pad retaining clip manufacturing technology can be very easily and without significant additional costs compared to a known manufacture by forming or punching a sheet metal blank.

The second inventive solution of the problem with a disc brake with the features of the preamble provides that the lining retaining bracket is held in a covering area with the caliper or the closure plate by means of an elastically deformable locking element on the caliper or the closure plate.

In this case, the closure plate, alternatively the caliper, with a corresponding correspondence part, so to speak, a holder for securing the Belaghaltebügels, wherein the locking element may be part of the Belaghaltebügels, for example in the form of a firmly connected spring plate, or as a separate component, in particular a spring clip, both positively engages the pad retaining bracket as well as on the closure plate or the caliper.

This invention is characterized in particular by the fact that the pad retaining bracket is very easy to assemble or disassemble, with appropriate configuration of the locking element manually or by means of a simple tool, such as a screwdriver or the like.

The respective correspondence element of the closure plate or the caliper is designed so that the elastically deformable locking element can engage positively. For this purpose, the caliper has an associated tab or molded edge, which is engaged behind by the locking element in the sense of a displacement protection.

The tab may be screwed as a separate part with the caliper, for example, and have a transverse slot, in which the pad retaining bracket can be inserted, in which case the locking element connected to the pad retaining clip engages behind this tab on the back.

This transverse slot, moreover, provides a radial securing of the pad retaining clip as well as a lateral guide, so that the pad retaining clip is secured in virtually any direction of movement, of course in combination with a fuse at the opposite end, here preferably in engagement with an undercut pin of the caliper.

In the sense of the aforementioned separate tab and the closure plate for receiving the pad retaining clip and the locking element can be designed accordingly, d. h., The closure plate has in the lining retaining bracket associated edge region on a transverse slot which is penetrated by the lining retaining bracket, wherein the dimensions of the transverse slot are dimensioned so that the walls form a guide for the lining retaining bracket.

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

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

Show it:

1 a part of a disc brake according to the invention according to claim 1 in a perspective view

2 a section of the part after 1 , also shown diagrammatically

3 and 4 a detail of the part according to the 1 and 2 , each in different perspective views

5 - 16 Embodiments of the invention according to claim 7 in different views and that

5 a plan view of the disc brake, shown in perspective

6 a cross section through a portion of the disc brake after 5

7 - 9 in each case a detail of the disc brake according to the 5 and 6 in perspective view

10 a further embodiment of the disc brake in a perspective plan view

11 a cross section through the disc brake after 10 in a partial section

12 and 13 in each case a detail of the disc brake according to the figures and 11 , shown in perspective

14 a further embodiment with reference to a partial section of a disc brake in a sectional side view

15 and 16 each a detail of the embodiment according to 14 , shown in perspective.

For example, in the 5 is the basic structure of a disc brake for a commercial vehicle shown, with a vehicle-side brake disc 2 overarching, consisting of cast iron caliper 1 in which two brake pads 3 are arranged and the one through a closure plate 5 has closed receiving space in which an application device 9 with a swivel brake lever 14 is positioned.

Next is one on the caliper 1 releasably held, a mounting hole 4 spanning and an abutment for the spring-loaded brake pads 3 forming lining retaining bracket 6 provided, with the brake disc on both sides 2 arranged brake pads 3 in lining shafts of a stationary brake carrier 7 are positioned in the circumferential direction of the brake disc 2 through brake carrier horns 23 are limited and a stop for the brake pads held in the lining shaft 3 form.

In the 1 and 2 is a part of such a disc brake recognizable, in particular the formation of the pad retaining bracket 6 according to claim 1, as well as in the 3 and 4 ,

According to this invention, the pad retaining bracket 6 end a transversely to the longitudinal extension angled terminal lug 10 on, in the example on the closure plate 5 is held.

For this purpose, the connection lug 10 with both sides of the pad retaining bracket 6 extending wings 11 provided on the closure plate 5 abutment and one hole each 26 have, are guided by the screws, with which the closure plate 5 on the caliper 1 is attached.

Alternatively, the connecting lug 10 also on the caliper 1 be directly connected and indeed by screws or through in the caliper 1 pressed pins on which the connecting lug 10 with their holes 26 is plugged.

At the connecting tab 10 opposite end is the pad retaining bracket 6 forming a channel section 13 cranked and with one end by a bridge 17 limited insertion opening 12 provided in the assembled position of the lining retaining bracket 6 from a pin of the caliper 1 will pass through. A pin guided by the pin located in the gutter section 13 rests, serves as a backup, so that the lining retaining bracket 6 is secured in every direction.

In the 5 - 16 Embodiments of a disc brake according to claim 7 are shown, which corresponds in each case in its basic structure of the previously described. According to the invention, the disc brake is designed such that in a covering region of the lining retaining bracket 6 with the caliper 1 or the closure plate 5 the pad retainer 6 by means of an elastically deformable locking element on the brake caliper 1 or the closure plate 5 is held.

In the in the 5 - 8th As shown, the locking element consists of a spring clip 8th that as a detail in the 9 is recognizable.

This spring clip 8th describes in its contour an open, preferably isosceles triangle whose free ends to outwardly directed stop portions 23 are angled.

In the 6 is the connection of the pad retaining bracket 6 on the closure plate 5 clarified. This points, according to the 7 , on her the mounting hole 4 facing edge region of a molded tab 19 on, with a transverse slot 20 that of the pad retainer 6 with an end region, this end region being a window 21 comprising, with a transverse edge forming the outer edge 22 ,

As the 6 reproduces very clearly, is the window 21 in the overlap area with the tab 19 positioned, with the spring clip 8th over the outer edge of the tab 19 slipped and on the one hand with the stop sections 23 the crossbar 22 and on the other hand, the opposite edge region of the window 21 engages below. Here is the spring clip 8th formed from a spring plate, with outward spreading force.

For dismantling the pad retaining clip 6 is the spring clip 8th just squeeze, until the two opposite stop sections 23 opposite the window 21 lie free and the spring clip 8th can be removed.

The mounting of the in the transverse slot 20 inserted pad retaining bracket 6 done by squeezing the spring clip 8th and inserting through the window 21 , wherein the stopper sections 23 spread until they reach the plant under the pad retaining bracket 6 reach. In this case, lies the tab 19 with its upper edge in the area of the tip of the spring clip 8th ,

Opposite is the pad retaining bracket 6 held by that one the insertion opening 12 the outside limiting footbridge 17 in an undercut 18 one the insertion opening 12 passing through pin 16 engages, with this undercut 18 in the spring clip 8th opposite direction is open, allowing a simple insertion of the lining retaining bracket 6 both in the undercut 18 of the pin 16 as well as in the transverse slot 20 the closure plate 5 is possible.

In the in the 10 - 13 In the example shown, the locking element consists of one with the pad retaining clip 6 connected resilient latching tongue 25 , Also this pad retaining bracket 6 has a window 21 on, in which the catch tongue 25 dips.

For locking the pad retaining clip 6 with the closure plate 5 this one has the edge of the closure plate 5 enlarging flap 19 on ( 12 ), with a transverse slot 20 into which a nose 28 sticks out from the catch tongue 25 is engaged behind in locking position. Here is the free end of the latching tongue 25 as an angled locking leg 29 formed, with its free edge on the associated brake pad 3 opposite back of the nose 28 is applied.

For mounting the pad retaining bracket 6 this is set up so that the pin 16 the caliper 1 in the insertion opening 12 protrudes. In a subsequent displacement in the direction of the closure plate 5 the bridge arrives 17 in the undercut 18 of the pin 16 while the latch leg 29 the slot 28 passes with simultaneous radial deformation in the direction of the brake disc axis. After passing through the latch leg 29 this is due to the restoring forces of the existing spring plate latching tongue 25 moved in the opposite direction until the latch leg 29 with its free edge in the covering area of the nose 28 arrives.

A the window 21 limiting footbridge 22 as well as the angled side area protrude into a bag 27 the caliper 1 , which is sized to fit the pad retainer 6 forms a lateral guide in the insertion, as well as the pin 16 whose width is the width of the insertion opening 12 is adjusted.

In the in the 14 - 16 illustrated embodiment of the pad retaining bracket 6 also with a latching tongue 25 provided, the locking leg 29 However, in the direction of the brake disc axis is angled and the tab 19 engages behind, with this tab 19 not with a slot 20 is provided because the latching tongue 25 , relative to the brake disc axis, above the tab 19 is guided.

The catch tongue 25 is here between two prongs 30 arranged, which is characterized by a fork-shaped design of the associated end portion of the lining retaining bracket 6 result. The distance between two prongs 30 corresponds to the width of the tab 19 , so that a lateral guidance is guaranteed. Incidentally protrude after an installation, the tines 30 in the pocket 27 the caliper 1 , The opposite connection of the pad retaining bracket 6 with the caliper 1 corresponds to that according to the embodiment of the 10 - 13 ,

For mounting the pad retaining bracket 6 this is initially in the overlap area with the insertion opening 12 on the cones 16 placed in the through hole 12 protrudes. During the subsequent displacement of the pad retaining clip 6 in the direction of the closure plate 5 slides the bolt leg 29 , which is designed in the manner of a ramp, over the free edge of the tab 19 against the spring force of the latching tongue 25 until the free end of the latch leg 29 the edge of the tab 19 has run over, so that the bolt leg 29 due to the restoring forces of the latching tongue 25 in the overlap area with the tab 19 to be led.

At the same time the bridge becomes 17 in the undercut 18 of the pin 16 pushed and the tines 30 in the pocket 27 ,

LIST OF REFERENCE NUMBERS

1

caliper

2

brake disc

3

brake lining

4

mounting hole

5

closing plate

6

Pad Retainer

7

brake carrier

8th

spring clip

9

application device

10

connection tab

11

wing

12

Through opening

13

Channel cutting

14

brake lever

15

brake plunger

16

spigot

17

web

18

undercut

19

flap

20

transverse slot

21

window

22

crosspiece

23

stop section

24

Pad retaining spring

25

catch tongue

26

drilling

27

bag

28

nose

29

Riegel leg

30

prong

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 102006039298 B3 [0002]
• EP 1588070 B1 [0010, 0016]

Claims (17)

Disc brake for a utility vehicle, with a vehicle-side brake disc ( 2 ), consisting of cast iron caliper ( 1 ), in which two brake pads ( 3 ) and the one through a closure plate ( 5 ) has a closed receiving space in which an application device ( 9 ), one on the caliper ( 1 ) releasably held, a mounting hole ( 4 ) spanning, an abutment for the spring-loaded brake pads ( 3 ) forming pad retaining bracket ( 6 ) is provided, characterized in that the lining retaining bracket ( 6 ) at the end a transversely to the longitudinal extension angled terminal tab ( 10 ), which on the closure plate ( 5 ) or the caliper ( 1 ) is held. Disc brake according to claim 1, characterized in that the connecting strap ( 10 ) two wings ( 11 ), each extending to one side. Disc brake according to claim 1 or 2, characterized in that the connecting lug ( 10 ) Drilling ( 26 ) having. Disc brake according to one of the preceding claims, characterized in that the connecting plate ( 10 ) on the closure plate ( 5 ) is held by screws, with which the closure plate ( 5 ) on the caliper ( 1 ) is attached. Disc brake according to one of the preceding claims, characterized in that the connecting plate ( 10 ) with the caliper ( 1 ) is bolted or pinned. Disc brake according to one of the preceding claims, characterized in that the pad retaining clip ( 6 ) at its the connection tab ( 10 ) opposite end an insertion opening ( 12 ), which is penetrated by a caliper-side spigot through which a pin or the like is guided, which in a gutter section ( 13 ) of the pad retaining bracket ( 6 ) is present. Disc brake according to the preamble of claim 1, characterized in that in a covering area of the pad retaining clip ( 6 ) with the caliper ( 1 ) or the closure plate ( 5 ) the pad retainer ( 6 ) by means of an elastically deformable locking element against displacement on the brake caliper ( 1 ) or the closure plate ( 5 ) is held. Disc brake according to claim 7, characterized in that the locking element consists of a spring clip ( 8th ) is formed, on the one hand, based on the axis of the brake disc ( 2 ), at the bottom of the pad retaining bracket ( 6 ) and on the other hand at the top of a tab ( 19 ) of the closure plate ( 5 ) or a molded-on tab of the caliper ( 1 ) is supported. Disc brake according to claim 7 or 8, characterized in that the spring clip ( 8th ) is contoured as an open triangle, whose free ends as outwardly angled stop sections ( 23 ) are formed, which at the bottom of the pad retaining bracket ( 6 ), wherein the spring clip ( 8th ) a window ( 21 ) of the pad retaining bracket ( 6 ), in whose coverage area the tab ( 19 ), which has a transverse slot ( 20 ), through which the pad retaining clip ( 6 ) is guided with one end. Disc brake according to one of claims 7-9, characterized in that the closure plate ( 5 ) facing away from the lining retaining bracket ( 6 ) an insertion opening ( 12 ) for receiving one with an undercut ( 18 ) provided pins ( 16 ) of the caliper ( 1 ), whereby one the through opening ( 12 ) bounding bridge ( 17 ) in the undercut ( 18 ) is present. Disc brake according to one of claims 7-10, characterized in that on the pad retaining bracket ( 6 ) a resilient latching tongue ( 25 ) attached to its the closure plate ( 5 ) facing free end of an angled locking leg ( 29 ) located on one of a pocket ( 27 ) of the caliper ( 1 ) facing the back of a tab ( 19 ) of the closure plate ( 5 ) is present. Disc brake according to one of claims 7-11, characterized in that the latching tongue ( 25 ) and the associated end region of the pad retaining clip ( 6 ) through the slot ( 20 ) the tab ( 19 ), one at an edge of the slot ( 20 ) molded nose ( 28 ), on which the locking leg ( 29 ) is in the window ( 21 ) protrudes, in which the latching tongue ( 25 ) is deflectably positioned in the direction of the brake disc axis. Disc brake according to one of claims 7-12, characterized in that the insertion opening ( 12 ) opposite end of the pad retaining bracket ( 6 ) in the pocket ( 27 ) is inserted. Disc brake according to one of claims 7-13, characterized in that the width of the slot ( 20 ) about the width of the pad retaining bracket ( 6 ) in the assigned area. Disc brake according to one of claims 7-14, characterized in that the pad retaining clip ( 6 ) in which the closure plate ( 5 ) facing end region is fork-shaped, with two parallel and spaced apart tines ( 30 ) between which the catch tongue ( 25 ) is positioned. Disc brake according to one of claims 7-15, characterized in that the tab ( 19 ) in between the tines ( 30 ) formed space, wherein the latching tongue ( 25 ) the free edge of the tab ( 19 ) overlaps and rests against the back. Disc brake according to one of claims 7-16, characterized in that the angled bolt leg ( 29 ) is designed in the sense of an insertion bevel.

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