EP3198166A1

EP3198166A1 - Guide means for a brake lining arrangement of a disc brake, and disc brake

Info

Publication number: EP3198166A1
Application number: EP15775404.5A
Authority: EP
Inventors: Markus Mallmann; Berthold Ulrich
Original assignee: Lucas Automotive GmbH
Current assignee: ZF Active Safety GmbH
Priority date: 2014-09-23
Filing date: 2015-09-22
Publication date: 2017-08-02
Also published as: CN107076231B; CN107076231A; US20170299004A1; DE102014014081A1; WO2016046160A1

Abstract

The invention relates to a guide means (10) for a brake lining arrangement (82, 84) of a disc brake (100), comprising a main part (12) which comprises: - a guide portion (14) which is provided for guiding a guide protrusion (98) of the brake lining arrangement (82, 84) and which has an upper guide surface (14a), a lower guide surface (14c), and a connection surface (14b) that connects the two guide surfaces, and - an upper securing portion (16) for securing the guide means (10) to a brake support (40, 540), said securing portion having an upper support surface (16a), a lower support surface (16c) and a stop surface (16b) which connects the two support surfaces, and - a lower securing portion (18) for further securing the guide means (10) to the brake support (40, 540), wherein the stop surface (16b) of the upper securing portion (16) can be brought into contact with a corresponding portion of the brake support (40, 540) for positioning purposes, and the lower securing portion (18) has at least one lower retaining portion (30) which engages into a corresponding recess (74) in the brake support (40, 540) and is thereby in secure engagement with the brake support at least in some sections. Furthermore, the stop surface (16b) has an upper retaining portion (20) which has two regions that can be brought into contact with the brake support (40, 540) at least in some sections for positioning purposes, said upper retaining portion (20) being arranged on the guide means (10) such that the retaining portion fixes the guide means (10) axially in both directions when attached to the brake support (40, 540).

Description

Guide means for a brake pad assembly of a disc brake and disc brake

The present invention relates to a guide means for a disc brake pad assembly having a body including: a guide portion provided for guiding a guide projection of the pad assembly having an upper guide surface, a lower guide surface, and a connecting surface connecting these two guide surfaces, an upper attachment portion for mounting the guide means on a brake carrier having an upper abutment surface, a lower abutment surface and a stop surface which connects these two abutment surfaces, and a lower attachment portion for securing the guide means to the brake carrier, the abutment surface of the upper attachment portion being in abutting engagement with a corresponding portion of the brake carrier can be brought, wherein the lower mounting portion has at least one lower holding portion which in a

corresponding recess engages in the brake carrier and is at least partially in holding engagement with this.

Such guide means are known from the prior art and disclosed for example in the document US 2013/0192938 AI. This document describes a guide means with a mountable on a brake carrier upper and lower portion and provided for guiding a projection of a brake pad carrier portion. The upper portion has a first support leg and a second support leg, which rest on provided surfaces of the brake carrier. In addition, the upper portion includes a retaining tab which is engageable with the brake carrier. The portion for guiding a projection of the brake pad assembly comprises a base leg, an upper leg, a lower leg and two holding elements arranged laterally of the base leg. The two holding elements of the guide means are applied to opposite side surfaces of a brake carrier section in order to hold the guide means in position. In addition, the lower section also has, in addition to a lower abutment leg and an extension leg, a retaining element formed on one side for securing the guide means to the provided brake carrier section. The holding elements are each at bending points, which adjoin the

Side edges of the guide means are bent in the direction of the brake carrier, that is, the holding elements are elastically formed on the guide means. The holding elements of the guide means are arranged on the guide means, that they are oriented in the direction of the actuation force of the brake pad assembly. Accordingly, the holding elements of the guide means are loaded upon actuation of the brake pad assembly with the actuating force, since they should hold the guide means against the actuating force of the brake pad assembly in its predetermined position on the portion of the brake carrier. This applies in particular to the one-sided holding element of the lower portion of the guide means.

So that the holding elements can withstand the loads caused by the actuating force of the brake pad arrangement and also the vibrations occurring during the operation of a vehicle, the elastic holding elements of the guide means must be designed accordingly and dimensioned accordingly for this load. In particular, the one-sided holding element of the lower portion is designed so that it has a sufficiently high rigidity despite its elastic training.

The document EP 2 299 142 A1 discloses a guide means for a brake pad assembly comprising a receiving portion for attachment to a projection of a brake carrier. The receiving portion has an upper and a lower holding surface and a connecting surface connecting these two holding surfaces. Also provided on the upper support surface is a retention claw biased against an upper surface of the protrusion and engaging a groove on the upper surface of the protrusion to counteract a drop of the guide means from the brake carrier.

Document DE 10 2012 010 932 A1 describes a guide means for a brake lining arrangement, which comprises a fastening section with two contact surfaces and a stop surface connecting the two contact surfaces. For axial fixing of the guide means on a brake carrier, a holding section and at least one elastic retaining clip are formed on the stop surface. In this case, the retaining clip is provided on one side of the stop surface and made elastic, to allow compensation of manufacturing tolerances in the attachment to the brake carrier.

Further guide means according to the prior art are known from the documents WO 2005/064194 AI, DE 10 2012 016 737 AI and DE 10 2011 160 AI. In the current state of the art, the guide means often can not be mounted processable. The reason for this is the tolerance design of the retaining elements and the resulting maximum overlap with the lateral casting surfaces of the brake carrier. Limiting the casting tolerance to solve this problem, however, is technically impossible for most foundries.

It is therefore an object of the present invention to provide a guide means which has a higher rigidity and a higher strength with a reduced use of material and in which a tolerance restriction of the cast surfaces of the brake carrier can be largely dispensed with.

This object is achieved by a guide means for a brake pad assembly according to claim 1 and a disc brake for a motor vehicle brake system according to claim 17.

Further embodiments will become apparent from the appended subclaims 2 to 16 and 18 to 19.

To achieve the above-described object, the abutment surface of the guide means according to the invention is provided with an upper rigid holding portion having two portions which are at least partially engageable with the brake carrier in abutment, wherein the upper rigid holding portion is arranged on the guide means, that he Guide means axially fixed in both directions in a state attached to the brake carrier.

Due to its design in the abutment surface of the holding portion has a high rigidity, so that without additional material requirements, the strength and rigidity of the guide means can be increased overall. Further, by providing the rigid holding portion, as compared with the prior art, the elastic holding members of the portion for guiding the protrusion of the brake pad assembly can be omitted. In addition, also compared with the prior art, the one-sided support member of the lower portion can be replaced by another embodiment.

With the guide means of the invention required for the production of the guide means material requirements can be significantly reduced, resulting in a reduction of manufacturing costs. By eliminating laterally arranged elastic holding elements can be dispensed with a Gusstoleranzeinschränkung the brake carrier and at the same time a process-capable assembly possible.

The stiffened upper holding portion may be disposed on the guide means such that each of the two portions of the upper holding portion can be axially loaded in an opposite direction in a state attached to the brake carrier. More specifically, one portion of the upper support portion may be loaded with the actuation force of the brake pad assembly while the other portion may be loaded with the force upon release of the brake pad assembly from the brake position. Thereby, the guide means can be fixed axially in both directions and reliably held in its predetermined position on the brake carrier, whereby the life of the guide means is increased.

According to one embodiment of the present invention, the upper holding portion may comprise at least one holding surface, which serves to rest against the brake carrier.

The holding surface may be angled towards the stop surface so as to extend substantially parallel to at least the lower abutment surface of the upper attachment portion of the guide means. Due to the design of the brake carrier, the upper holding portion or the holding surface in the two areas can each create a flat or with one of his or her side edges of the brake carrier and absorb the forces and stresses occurring. It is of course possible that the holding surface in the two areas can lie flat and with one of its side edges on the brake carrier.

In this context, it may further be provided according to the invention that the holding surface is angled along an edge which extends substantially perpendicular to the side edges of the upper attachment portion or to the side edges of the base body. The length of the edge at which the support surface can be angled, and the associated size of the support surface serve to adjust the rigidity of the upper holding portion. Since the edge is parallel to the direction in which the forces and stresses occur in a state of the guide means attached to the brake carrier, that is, to the direction of the

Operating force or the force to release the brake pad assembly, these loads over the length of the edge and the size of the holding surface in the two Areas are included. Such a holding section provides a very high rigidity without additional material requirements.

The upper holding portion may extend between the stop surface and at least one of the abutment surfaces according to an embodiment of the invention. The holding surface can be connected to at least one of the contact surfaces. In other words, the upper holding portion may be formed by a holding surface extending parallel to at least the lower abutment surface and a further surface portion extending substantially parallel to the abutment surface. The further surface section then merges into one of the contact surfaces.

According to a further embodiment of the invention, the two areas of the upper holding portion may each be formed starting from one of the side edges of the guide means, more specifically, the upper fixing portion, in the direction of the center of the guide means.

Further, the two portions of the upper holding portion may be formed separately from each other. In this case, the upper holding portion is not formed as a continuous portion, but has two spatially distant areas. These two areas can each receive in a mounted state on the brake carrier axial loads in opposite directions and thus fix the guide means axially on the brake carrier. As a result of this embodiment, the two spatially separated regions of the upper holding section can be brought into contact, at least in sections, with two side surfaces of a same projection of the brake carrier, wherein each region can be brought into contact with one of the two side surfaces.

A development of the invention provides that the stop surface is at least partially formed as an elastic retaining clip. For this purpose, the stop surface in an area between two spatially separated areas of the upper holding portion upwardly bent such that it forms an elastic retaining clip, which can be applied at least in sections to a corresponding projection of the brake carrier. The upper abutment surface may be formed in this embodiment in the region of the retaining clip separately from the retaining clip.

Furthermore, the upper abutment surface can be formed, at least in sections, as a clamping component which, in operation, is opposite a projection of the abutment Brake carrier is supported and the tangential and radial fixation of the guide means on the brake carrier is used. The jamming component can be formed in a section between the two regions of the upper holding section.

The upper abutment surface or the clamping component may have at least two latching claws or may have the shape of a double tongue, which comprises two tongue sections in order to hold the guide means on the brake carrier.

According to the invention, the at least two latching claws or the two tongue sections can at least partially surround a corresponding centering projection on the brake carrier during operation. As a result, unintentional, radial and / or tangential release of the guide means from the brake carrier can be counteracted. In other words, the guide means can be held by means of gripping the centering projection by the locking claws or tongue portions on the brake carrier. In addition, the interaction, i. the gripping, the latching claws or tongue sections with the centering, cause a centering effect during assembly of the guide means on the brake carrier. As a result, an intended attachment of the guide means to the brake carrier, for example during a brake lining change, can be simplified.

Furthermore, the stop surface may have at least one centering recess, which is formed corresponding to the centering projection of the brake carrier. The centering recess can be provided on the elastic retaining clip. By means of the centering recess, it can be ensured that no disturbing contact and / or superimposition of the inside of the stop surface facing the brake carrier with the centering projection occurs during operation or after completed assembly. This also ensures the intended attachment of the guide means to the brake carrier in the correct position.

The double tongue can be supported in each case point-shaped on the projection of the brake carrier via the two tongue sections. In this case, the two tongue sections each have a rounded toward the brake carrier training. Since the two point contacts act together as a line contact, thus improved clamping of the guide means can be achieved with the brake carrier, compared with simply formed tongue components. Alternatively, the two tongue sections may have a line-shaped attack on the brake carrier, at least in sections, instead of a punctiform attack on the brake carrier. According to this embodiment, the two tongue portions are formed flat to support against the brake carrier. The double tongue can also have two identically shaped tongue sections with punctiform or linear attack on the brake carrier or a combination of two differently shaped tongue sections. The above-described can also apply to the at least two locking claws.

Alternatively, however, instead of the double tongue, a simply formed tongue component or a simply formed clamping section with a punctiform or linear contact area for point or line contact may also be provided. The double tongue or the clamping portion may also be formed such that it is connected to the upper abutment surface outside the portion between the two areas of the upper holding portion only via a head portion.

According to one embodiment of the invention, lateral insertion straps can be formed on the guide section. The insertion tabs on the guide portion of the guide means facilitate insertion of a guide projection of the brake pad assembly into the guide portion of the guide means. The lateral insertion straps can be designed angled for this purpose, so that the

Guide projection of the brake pad assembly during insertion must be positioned less accurately. The insertion tabs guide or "center" the guide projection into the guide section.

At the guide section, according to a further embodiment, at least one contact claw may be provided, which projects beyond the base body in the direction of the brake carrier. In this case, the at least one contact claw can be arranged at an upper or lower end of the connecting surface of the guide section. In addition, the at least one contact claw can be provided laterally or centrally on the connecting surface of the guide section. The at least one contact claw can be supported against a portion of the brake carrier for receiving the guide portion of the guide means to allow an elastically biased, tight fit of the guide means on the brake carrier and thus to fix the guide means tangentially to the brake carrier. The at least one contact claw may be punctiform or at least partially supported surface-shaped relative to the brake carrier. For this purpose, the at least one contact claw in the direction of the brake carrier may be rounded or flat.

A further embodiment may have two laterally arranged contact claws and / or a centrally arranged contact claw, which are in contact with each other. Overlying upper and lower ends of the connecting surface of the guide portion are arranged. In this case, the two laterally arranged contact claws may be provided at the lower end and the centrally arranged contact claw at the upper end. By virtue of this arrangement, the guide means can be effectively fixed or clamped tangentially to the brake carrier via opposing forces. If a plurality of contact claws are provided on the guide means, they can have either the same point or area-shaped design or a combination of different configurations.

According to one embodiment of the invention, the guide portion may have a force acting on the brake pad assembly return spring. The return spring may be designed to move the brake pad back to its original position after a successful braking in order to prevent a permanent grinding of the brake pads on a brake disc. For this purpose, the restoring spring has an extension which engages under a lining carrier in the direction of the brake disk so that an abgewinkelter stop at the extension races behind the lining carrier. In addition, the return spring comprises a loop which is designed such that it on the one hand enables an elastic behavior for moving the brake pad assembly back from the braking position and on the other hand can provide a necessary plastic deformation when exceeding a Bremsbelagverschleißgrenze or a defined Betätigungsleerwegs.

In a further embodiment of the invention, a lip portion is provided at the lower attachment portion. The lip portion may be adjacent to the abutment surface of the lower attachment portion and angled from this. In addition, the lip portion may have a curved cross-section. In a state attached to the brake carrier, the lip portion may be at least partially in abutment with the brake pad carrier, whereby a force acts on the lip portion, which biases the lip portion against the brake pad carrier. By means of a lever-related force transmission, an additional contact pressure force can be exerted on clamping components and / or contact claws of the guide means. This can further increase the tangential fixation and thus the retention effect of the guide means on the brake carrier. In a state that is not in contact with the brake pad carrier, the tangential fixation, on the other hand, can be counteracted by lifting the lip section or by a force on its underside.

As a result, disassembly and release of the guide means are supported by the brake carrier. The lower holding portion of the lower mounting portion may be formed according to a further embodiment of the invention as a projecting tongue. The projecting tongue can be at least partially in the holding engagement with a corresponding recess of the brake carrier. Thereby, the lower holding portion or the protruding tongue can be loaded in a state attached to the brake carrier with the actuating force of the brake pad assembly, whereby the guide means can be fixed axially on the brake carrier and held in its intended position.

According to a development, the main body of the guide means may have a substantially S-shaped configuration.

Furthermore, the guide means may be made of sheet metal. In this case, the guide means can be made in one piece.

The present invention further relates to a disc brake for a motor vehicle brake system comprising a brake pad assembly having a brake pad carrier and a brake pad mounted on the brake pad, which is engageable to achieve a braking effect with a brake disc, a brake carrier, the at least one receiving area and an upper and a lower attachment portion, and a guide means of the type described above, which is secured to the mounting portions of the brake carrier with its mounting portions and the guide portion is received in the receiving area of the brake carrier, wherein the brake pad carrier has at least one guide projection which is displaceable in the guide portion of the guide means is guided.

In a further embodiment, the upper attachment region of the brake carrier may be formed in the form of a projection. The upper holding portion of the upper attachment portion of the guide means may be axially supported in both directions on the upper mounting portion of the brake carrier.

As a result, the guide means can absorb axial loads in both directions.

Further, the upper mounting portion of the brake carrier for supporting the attachment of the guide means to the brake carrier at its opposite Side surfaces have recesses, in each of which a portion of the upper holding portion of the upper attachment portion of the guide means can engage.

The centering projection, which is intended to be at least partially encompassed by the at least two latching claws or tongue sections of the upper contact surface of the guide means, may be formed on the upper mounting region of the brake carrier. According to the invention, the centering projection may be in the form of a single projection which extends substantially in a direction opposite to the lower fastening region. In this case, the centering projection in a transition region, in which the centering projection merges into the brake carrier, have a transition radius, wherein the detent claws or tongue sections can substantially encompass this transition radius holding or holding this can attack. Thus, the centering projection is used for the secure attachment of the guide means on the brake carrier.

In addition, the centering projection may be formed on the upper mounting region of the brake carrier in such a way that it transitions in sections over its transition radius into a side surface of the upper fastening region, which faces the stop surface of the guide means during operation. As a result, the guide means, more precisely the latching claws or tongue sections, come into contact with the centering projection as early as possible during assembly, as a result of which it acts in a positioning manner on the guide means. This can be the

Centering projection in addition to the backup function also have a centering function.

The centering projection may be cast on the brake carrier.

Hereinafter, various embodiments of the present invention will be described with reference to the accompanying drawings. They show:

Fig. 1, 2 are perspective views of a guide means according to a first

Embodiment of the invention;

Fig. 3 is a perspective view of a brake carrier according to the invention; 4 shows a perspective view of the brake carrier according to FIG. 3 with guide means attached thereto according to the first embodiment of the invention;

Fig. 5 is a perspective view of a disc brake according to the invention with guide means according to the first embodiment of the invention;

Fig. 6 is a perspective view of a guide means according to a second

Embodiment of the invention;

Fig. 7 is a perspective view of a guide means according to a third

Embodiment of the invention;

Fig. 8 is a perspective view of a disc brake according to the invention with a guide means according to the third embodiment of the invention;

9, 10 are perspective views of a guide means according to a fourth

Embodiment of the invention;

Fig. 11 is a perspective view of the brake carrier of FIG. 3 with attached thereto guide means according to the fourth embodiment of the invention

12, 13 are perspective views of a guide means according to a fifth

Embodiment of the invention; and

14 is a perspective view of another brake carrier according to the invention with a guide means to be attached thereto according to the fifth embodiment.

A guide means 10 shown in FIG. 1 has a base body 12, which comprises a guide section 14, an upper fastening section 16 and a lower fastening section 18. Together, the guide portion 14, the upper mounting portion 16 and the lower mounting portion 18 put in the way sentlichen S-shaped shape of the main body 12 of the guide means 10 fixed. The guide means 10 is integrally formed.

The guide portion 14 is provided for guiding a guide projection of a brake pad assembly (not shown). The guide portion 14 has an upper guide surface 14a (not visible in FIG. 1) and a lower guide surface 14c opposed to the upper guide surface 14a, which are interconnected by a connecting surface 14b. The connecting surface 14b extends almost at right angles to the two opposite guide surfaces 14a and 14c.

The upper attachment portion 16 comprises an upper abutment surface 16a and a lower abutment surface 16c, which are interconnected via a stop surface 16b. The abutment surface 16b extends almost at right angles to the lower abutment surface 16c. The upper contact surface 16a is slightly angled upwards.

The stopper surface 16 b is provided with a stiffened upper holding portion 20. The upper holding portion 20 is formed in the illustrated embodiments each in the form of two spatially separated regions. In the following, the detailed descriptions of the two areas are generally set forth for the upper holding section. These should apply equally to both trained areas. For reasons of clarity, therefore, a duplicate embodiment of the reference symbols for the two regions is dispensed with.

The upper holding portion 20 includes a holding surface 22 that extends substantially parallel to the lower abutment surface 16 c of the upper attachment portion 16. The holding surface 22 is angled at an edge 24a and extends accordingly angled to the stop surface 16b. The edge 24 extends in

Substantially perpendicular to the side edges 12a and 12b of the main body 12 of the guide means 10th

A side edge AK of the holding surface 22 extends perpendicular to the edge 24 and can be applied to the brake carrier in a state of the guide means 10 attached to the brake carrier (see FIGS. 4 and 5). The length of the edge 24 and the side edge AK determine the size of the support surface 22 and thus define the range with which the upper support portion 20 can absorb the forces and stresses exerted on the guide means 10. The upper holding portion 20 extends between the abutment surface 16b and the abutment surface 16a, that is, adjacent to the holding surface 22, and the upper holding portion 20 includes another portion 26 connecting the holding surface 22 to the abutment surface 16a. The upper holding portion 20 thus extends stepwise starting from the abutment surface 16b to the abutment surface 16a and is carried out starting from the stop surface 16b loop-shaped inwardly in the direction of the brake carrier.

The upper holding portion 20 is formed so as to axially fix the guide means 10 in a state attached to the brake carrier in both directions. For this, the upper holding portion 20 is formed in two separate portions extending from opposite side edges of the upper fixing portion 16 toward the center of the guide means, respectively. Between the two areas of the upper holding portion 20, a portion of the abutment surface 16b and the upper abutment surface 16a is provided. By this spatially separate embodiment of the upper holding portion 20, both areas are at least partially engageable with the brake carrier in contact and can be axially loaded in a mounted state on the brake carrier in opposite directions.

The portion of the abutment surface 16 b of the upper attachment portion 16 located between the two areas of the upper holding portion 20 is formed as an elastic retaining clip 34. For this purpose, the said portion of the stop surface 16b is angled at the upper end along an edge and can thus clasp a projection provided for this purpose of the brake carrier. In this case, the retaining clip 34 is formed separately from the abutment surface 16 a of the upper attachment portion 16.

The abutment surface 16a is formed in the portion between the two regions of the upper holding portion 20, opposite to the retaining clip 34, as a clamping portion in the form of a double tongue 35a having two adjacent tongue portions. The double tongue 35a is supported in a mounted on the brake carrier state against the brake carrier. In this case, due to the geometric design, the double tongue 35a in each case has a point contact in the two tongue sections. At the same time, the two point contacts lie on a line and thus also act like a line contact, whereby an improved clamping with the brake carrier is achieved, compared with simply formed tongue sections. The double tongue 35a is thus attached to the guide provided that it is connected to the outside of the portion of the double tongue 35 a lying portions of the upper abutment surface 16 a only via a head portion 36.

The guide portion 14 further includes insertion tabs 37a and 37b that assist in inserting a guide projection of a brake pad assembly (not shown). The guide tabs 37a and 37b extend at an angle to the lower guide surface 14c.

There are further tabs 38a and 38b (see Fig. 2) provided which angled to the upper guide surface 14a (see Fig. 2) extend and as insertion tabs for a guide projection of a brake pad assembly (not shown) and additionally as a stop tab for a projection of a brake carrier (not shown), which is received in the upper attachment portion 16.

The lower attachment portion 18 of the guide means 10 has a contact surface 18 a, a stop surface 18 b and a holding portion 30. The holding portion 30 is formed in the form of a protruding tongue and is at least partially engageable with the brake carrier. Further, a lip portion 39 is provided on the abutment surface 18 a of the lower attachment portion 18. The lip portion 39 has a curved cross section and is elastically biased by its arrangement. In a state attached to the brake carrier, a brake lining arrangement acts at least in sections from above on the lip section 39, which has a positive effect on the fixation of the guide means 10 on the brake carrier. In addition, for disassembly of the guide means 10 from the brake carrier of the lip portion 39 is raised or a force exerted on the underside thereof in the direction of the arrow DR, whereby the guide means 10 is released from the brake carrier.

Fig. 2 shows another perspective view of the guide means 10 according to the first embodiment of the invention.

It can be seen in Fig. 2 again the S-shaped configuration of the body 12 of the guide means 10 with the guide portion 14, the upper mounting portion 16 and the lower mounting portion 18. In addition, in this view, the upper guide surface 14a of the guide portion 14 and the tab 38b recognizable. The brake carrier 40 shown in Fig. 3 has a Anschraubbügel 41, in the mounting holes 42 and 43 are formed. The attachment openings 42 and 43 serve to secure the brake carrier 40 to a wheel carrier, not shown. In addition to the Anschraubbügel 41 of the brake carrier 40 comprises a parallel to the Anschraubbügel 41 extending longitudinal bracket 44. The mounting bracket 41 and the longitudinal bracket 44 are connected to each other via transverse straps 45 and 46. In the crossbars 45 and 46 receiving openings 47 and 48 are formed in which guide pins (not shown) of a (also not shown) floating caliper can be accommodated.

The brake carrier 40 further comprises a receiving region 50, an upper attachment region 60 and a lower attachment region 70 for the guide means 10 shown in FIGS. 1 and 2. The receiving region 50 of the brake carrier 40 can receive the guide section 14 of the guide means 10 (not shown) , The receiving area 50 is defined by the surfaces 50 a and 50 b and the underside (not shown) of the upper mounting portion 60.

At the upper attachment portion 60, the upper attachment portion 16 of the guide means 10 (Figures 1 and 2) can be secured. The upper attachment portion 60 is formed in the form of a projection and has at its opposite side surfaces 60 a and 60 b each have a recess 62 and 64.

At the lower attachment portion 70, the lower attachment portion 18 of the guide means 10 (Figures 1 and 2) can be attached. The lower fastening region 70 is in the form of a shoulder and has a lower recess 74.

FIG. 4 shows a detail of a perspective view of the brake carrier 40 according to FIG. 3 with guide means 10 attached thereto.

The upper attachment portion 16 of the guide means 10 is attached to the formed as a projection upper attachment portion 60 of the brake carrier 40. In other words, the upper attachment portion 16 of the

Guide means 10, the upper mounting portion 60 of the brake carrier 40 between the surfaces 16 a, 16 b and 16 c and between the retaining clip 34 and the double tongue 35 a. The upper holding portion 20 of the upper attachment portion 16 of the guide means 10 engages with the two areas in the recesses 62 and 64 in the opposite side surfaces 60 a and 60 b of the upper attachment portion 60th

The guide portion 14 of the guide means 10 is received in the receiving area 50 of the brake carrier 40, so that a guide projection of a brake pad assembly (not shown) in the guide portion 14 of the guide means 10 can be performed.

The lower attachment portion 18 of the guide means 10 is placed on the lower attachment region 70 of the brake carrier 40 designed as a shoulder. In this case, the lip portion 39 projects beyond the lower attachment region 70 of the brake carrier 40. The lower holding portion 30 in the form of a projecting tongue engages in a lower recess 74 of the lower attachment region 70.

The upper holding portion 20 engages in the recesses 62 and 64 in the upper mounting portion 60 of the brake carrier 40 a. The upper holding portion 20 is thus adapted to the shape of the recesses 62 and 64 with its holding surface 22, which at the edge 24 (Fig. 1 and 2) angled to the stop surface 16b extends. Since the upper mounting portion 60 is formed stepwise with the recesses 62 and 64, the upper holding portion 20 can create with its step shape to the recesses 62 and 64. In particular, the retaining surface 22 and its side edge AK facing the upper fastening region 60 adjoin the recesses 62 and 64 or the lateral surfaces 60a and 60b.

The automotive brake system disc brake 100 shown in FIG. 5 includes brake pad assemblies 82 and 84 each having a brake pad carrier 90 and 92 and a respective brake pad 94 and 96 (not shown) attached to the brake pad carriers 90 and 92. On the brake pad carrier 90 and 92, a guide projection 98 is provided on both sides, which is guided displaceably in the guide portion 14 of the guide means 10. As already mentioned, the guide section 14 of the guide means 10 is received in the receiving area 50 of the brake carrier 40.

The arrow BR in FIG. 5 indicates the direction of actuation of the brake pad assemblies 82 and 84, in which the brake pad assemblies 82 and 84 are moved upon braking and brake release, respectively. When braking, the brake lag arrangements 82 and 84 in the direction of the arrow BR shifted to each other in order to interact with a brake disk, not shown, can.

It follows that in a brake operation, the guide means 10 and the upper holding portion 20 and the lower holding portion 30 of the guide means 10 via the guide projection 98 of the brake pad assemblies 82 and 84 are loaded with the actuating force from the direction of the arrow BR. Accordingly, when the brake is released in the opposite direction of the arrow BR, the upper holding portion 20 of the guide means 10 is loaded via the guide projection 98 of the brake pad assemblies 82 and 84. Even if the brake is not actuated, vibrations occur in the operation of a vehicle, which act in both directions of the arrow BR on the guide means 10 and the holding portions 20 and 30.

As can be seen from Fig. 5, the stiffened upper holding portion 20 is formed on the guide means 10 and the guide means 10 so positioned on the brake carrier 40 that the stiffened upper holding portion 20 over the two areas which occurs during a braking operation of the operating force

Brake pad assemblies 82 and 84 and can absorb the force occurring when releasing the operating force in both directions of the arrow BR. The length of the edge 24 (FIGS. 1 and 2) and the side edge AK of the holding surface 22 determine the region with which the upper holding portion 20 can absorb the loads exerted on the guide means 10.

Since the upper holding portion 20 can reliably receive the operating force, the guide means 10 has a high strength, which leads to a long life of the guide means 10.

In addition, this effect is reinforced by the lower holding portion 30, which can also receive the occurring during a braking operation force of the brake assemblies 82 and 84 in the direction of the arrow BR.

In the further embodiments of the invention described below, the same reference numerals as in the first embodiment described above are used for the same or equivalent components, but preceded by a continuous digit, beginning at 2. The components that are not described again in the other embodiments are, agree in their training and function with the corresponding components of the first Embodiment match. For the sake of clarity, the reference symbols of these components are omitted in the associated figures of the further embodiments.

Since the structure of the guide means 210 shown in FIG. 6 according to the second embodiment is similar to the structure of the guide means according to the above first embodiment, only the differences between the two embodiments will be discussed here.

The guide means 210 again has an S-shaped main body 212. The main body 212 includes a guide portion 214, an upper attachment portion 216, and a lower attachment portion 218.

In addition to the features of the guide means according to the above-described embodiment, the guide means 210 has contact claws 217a and 217b on the connection surface 214b, which are arranged laterally on the connection surface 214b and face each other. The contact claws 217a and 217b are designed such that they project beyond the base body in the direction of the brake carrier (not shown). In a state attached to the brake carrier, these contact claws are based on a surface of a receiving region of the brake carrier and fix the guide means tangentially to the brake carrier.

Fig. 7 shows a guide means 310 according to a third embodiment of the invention.

Since the structure of the guide means 310 according to the third embodiment is similar to the structure of the guide means according to the second embodiment described above, only differences between the two embodiments will be discussed here.

The guide means 310 in turn has an S-shaped main body 312. The main body 312 comprises a guide section 314, an upper fastening section 316 and a lower fastening section 318.

The guide means 310 has on the lower guide surface 314c of the guide portion 314 a force acting on the brake pad assembly return spring 319, which serves the brake pad assembly after a successful braking in his Move back home position to prevent permanent grinding of the brake pads on the associated brake disc. The return spring 319 comprises an extension 319a, which engages under a brake lining carrier in the direction of a brake disk, so that an angled stop 319b engages behind the brake lining carrier. In addition, the return spring 319 comprises a structurally configured loop 319c, which allows setting a threshold between a purely elastic behavior and a necessary plastic deformation when a brake pad wear limit is exceeded.

The return spring 319 can be made integral with the guide means. The deflection 319d of the return spring 319, which is preferably angled at 45 °, permits a material-saving sheet metal blank.

8 shows a perspective view of the disc brake 100 for a motor vehicle brake system with a brake carrier, a brake pad arrangement and a guide means 310 according to the third embodiment.

9 and 10 show a guide means 410 according to a fourth embodiment of the invention.

Since the structure of the guide means 410 according to the fourth embodiment is similar to the structure of the guide means according to the above-described embodiments, only differences between the two embodiments will be discussed here.

The guide means 410 in turn has an S-shaped main body 412. The main body 412 comprises a guide section 414, an upper attachment section 416 and a lower attachment section 418.

The guide means 410 has, in the connection surface 414b of the guide section 414, in addition to two laterally arranged contact claws 417a and 417b which oppose each other, also a centrally arranged contact claw 417c. The two laterally arranged contact claws 417a and 417b are provided in the lower region of the connecting surface 414b and designed such that they project beyond the main body 412 in the direction of the brake carrier (not shown). On the other hand, the centrally arranged contact claw 417c is provided in the upper region of the connecting surface 414b and designed such that it projects beyond the main body 412 in the direction of the brake carrier (not shown). In an am Brake carrier attached state, the laterally arranged contact claws 417a and 417b and the centrally arranged contact claw 417c respectively against a surface of a receiving region of the brake carrier from and fix the guide means tangentially to the brake carrier. Due to the opposing deadlock, the guide means is effectively jammed on the brake carrier.

FIG. 11 shows a detail of a perspective view of the brake carrier 40 according to FIG. 3 with guide means 410 according to the fourth embodiment attached thereto.

The centrally arranged contact claw 417c and the laterally arranged contact claws 417a and 417b (not shown) are supported against opposite surfaces of the receiving region 50 of the brake carrier. Thus, the guide means 410 is clamped on opposing forces on the brake carrier and fixed tangentially thereto.

12 and 13 show a guide means 510 according to a fifth embodiment of the invention in a mounted on another brake carrier 540 state. Since the structure of the guide means 510 according to the fifth embodiment is similar to the structure of the guide means according to the above-described embodiments, only differences between the embodiments will be described here. The same applies to the further brake carrier 540 shown in detail in FIGS. 12 and 13 with respect to the previously described brake carrier 40.

In contrast to the previous embodiments, the guide means 510 on the upper abutment surface 516a of the upper mounting portion 516, two locking claws 535b, which extend in substantially parallel to each other in the direction of the abutment surface 516b and are spaced from each other. The locking claws 535b are arranged in a central region of the upper contact surface 516a.

Further, in the abutment surface 516b of the upper attachment portion 516, a centering recess 534a is formed. More specifically, the centering recess 534a is provided in the region of the elastic retaining clip 534 and extends from an upper end of the elastic retaining clip in the direction of the lower contact surface 516c. The centering recess is arranged centrally between two recess-free sections of the elastic retaining clip 534. Moreover, the guide means 510 has at the connecting surface 514b of the guide portion 514 two centrally disposed contact claws 517c formed at opposite upper and lower ends of the connecting surface 514b and which respectively protrude from the main body of the guide means 510.

The brake carrier shown in FIGS. 12 to 14 differs from the brake carrier described with reference to FIG. 3 in that it has a centering projection 566. This centering projection 566 is formed on the upper attachment portion 60 and extends in FIGS. 12 to 14 substantially vertically upward.

In the state shown in FIGS. 12 and 13, in which the guide means 510 is attached to the brake carrier 540, the locking claws 535 b engage around the

Centering projection 566 in sections. Essentially, the latching claws surround the centering projection 566 in a region of the centering projection 566 facing away from the elastic retaining clip 534. The encompassing causes a holding and thus securing of the guide means in the state affixed to the brake carrier and thus prevents unintentional radial or tangential release of the guide means the brake carrier. The centering recess 534a thereby prevents the centering projection 566 in the attached state from interfering with the elastic retaining clip 534, which would counteract an intended operating position of the guide means 510.

14 shows a side view of the further brake carrier 540 and a guide means 510 according to the fifth embodiment to be attached thereto. The guide means 510 is moved during assembly in the direction of the arrow M and thereby attached to the brake carrier 540 via the corresponding mounting portions and areas.

In Fig. 14 it can be seen that the centering projection 566 is formed on an upper surface 568 a of the upper mounting portion of the brake carrier 540. More specifically, the centering projection 566 is formed in an area adjacent to a side surface 568b of the upper attachment portion, ie, a side surface of the upper attachment portion facing the abutment surface 516b of the guide means 510 in operation. The centering projection 566 has a relatively large transition radius at the transition into the brake carrier or the upper fastening. section on. Via this transition radius, the centering projection 566 also merges into the side surface 568b of the upper fastening section.

When attaching the guide means 510 to the brake carrier 540, i. When moving the guide means in the direction of the arrow M, the guide means 510 comes due to the described formation of the centering projection 566 as early as possible in contact with this. As the guide means progressively moves in the direction of the arrow M, the centering projection 566 cooperatively positions with the detent claws 535b, thereby centering the guide means 510. This facilitates the correct attachment of the guide means to the brake carrier.

In the attached state of the guide means 510 on the brake carrier 540 engage the locking claws 535b the centering projection 566 substantially in the region of the transition radius.

Claims

claims

A guide means (10, 210, 310, 410, 510) for a brake pad assembly (82, 84) of a disc brake (100) comprising a body (12, 212, 312, 412, 512) comprising:

a guide section (14, 214, 314, 414, 514) provided for guiding a guide projection (98) of the brake pad arrangement (82, 84), which has an upper guide surface (14a, 214a, 314a, 414a, 514a), a lower guide surface ( 14c, 214c, 314c, 414c, 514c) and a connecting surface (14b, 214b, 314b, 414b, 514b) connecting these two guide surfaces,

- an upper attachment portion (16, 216, 316, 416, 516) for attaching the guide means (10, 210, 310, 410, 510) to a brake carrier (40, 540) having an upper abutment surface (16a, 216a, 316a, 416a, 516a), a lower abutment surface (16c, 216c, 316c, 416c, 516c) and a stop surface (16b, 216b, 316b, 416b, 516b) connecting said two abutment surfaces, and

- A lower mounting portion (18, 218, 318, 418, 518) for further securing the guide means (10) on the brake carrier (40, 540),

wherein the abutment surface (16b, 216b, 316b, 416b, 516b) of the upper attachment portion (16, 216, 316, 416, 516) is positionably engageable with a corresponding portion of the brake carrier (40, 540),

wherein the lower mounting portion (18, 218, 318, 418, 518) at least one lower holding portion (30, 230, 330, 430, 530) which engages in a corresponding recess (74) in the brake carrier (40, 540) and above is at least partially in holding engagement with this,

characterized in that the abutment surface (16b, 216b, 316b, 416b, 516b) has an upper holding portion (20, 220, 320, 420, 520) comprising two portions at least in sections with the brake carrier (40, 540) in Positioning system can be brought, wherein the upper holding portion (20, 220, 320, 420, 520) on the guide means (10, 210, 310, 410, 510) is arranged such that it the guide means (10, 210, 310, 410 , 510) are axially fixed in both directions in a state affixed to the brake carrier (40, 540).

Second guide means (10, 210, 310, 410, 510) according to claim 1,

characterized in that the upper holding portion (20, 220, 320, 420, 520) comprises at least one holding surface (22, 222, 322, 422, 522) adapted to abut on the Brake carrier (40, 540) is provided.

Third guide means (10, 210, 310, 410, 510) according to claim 2,

characterized in that the retaining surface (22, 222, 322, 422, 522) is angled towards the abutment surface (16b, 216b, 316b, 416b, 516b) such that it extends substantially parallel to the lower abutment surface (16c, 216c, 316c, 416c, 516c) of the upper attachment portion (16, 216, 316, 416, 516).

4. guide means (10, 210, 310, 410, 510) according to claim 2 or 3,

characterized in that the holding surface (22, 222, 322, 422, 522) is angled along an edge (24) which is substantially perpendicular to side edges (12a, 12b) of the base body (12, 212, 312, 412, 512 ).

5. guide means (10, 210, 310, 410, 510) according to any one of the preceding claims, characterized in that the upper holding portion (20, 220, 320, 420, 520) between the stop surface (16b, 216b, 316b, 416b , 516b) and at least one of the abutment surfaces (16a, 16c, 216a, 216c, 316a, 316c, 416a, 416c, 516a, 516c), wherein the holding surface (22, 222, 322, 422, 522) with one of the contact surfaces (16). 16a, 16c, 216a, 216c, 316a, 316c, 416a, 416c, 516a, 516c).

6. guide means (10, 210, 310, 410, 510) according to any one of the preceding claims, characterized in that the two areas of the upper holding portion (20, 220, 320, 420, 520) respectively starting from one of the side edges (12a, 12b) of the guide means (10, 210, 310, 410, 510) in the direction of the center of the guide means (10, 210, 310, 410, 510) are formed.

7. guide means (10, 210, 310, 410, 510) according to any one of the preceding claims, characterized in that the two regions of the upper holding portion (20, 220, 320, 420, 520) are formed separately from each other.

8. guide means (10, 210, 310, 410, 510) according to any one of the preceding claims, characterized in that the stop surface (16b, 216b, 316b, 416b, 516b) at least in sections as an elastic retaining clip (34) is formed.

9. guide means (10, 210, 310, 410, 510) according to any one of the preceding claims, characterized in that the upper abutment surface (16a, 216a, 316a, 416a, 416a) is at least partially formed as Verklemmungskomponente opposite in operation a projection of the brake carrier (40, 540) off supports and the guide means (10, 210, 310, 410, 510) fixed tangentially to the brake carrier (40, 540).

10. guide means (10, 210, 310, 410, 510) according to claim 9,

characterized in that the jamming component is formed in a portion between the two portions of the upper holding portion (20, 220, 320, 420, 520).

11. guide means (10, 210, 310, 410, 510) according to claim 9 or 10,

characterized in that the clamping component comprises at least two locking claws (535b) or in the form of a double tongue (35a) is formed, which has two tongue portions.

12. guide means (10, 210, 310, 410, 510) according to claim 11,

characterized in that the two latching claws (535b) or the two tongue sections for supporting against the brake carrier (40, 540) each have a point or surface-shaped design.

13. guide means (10, 210, 310, 410, 510) according to claim 11 or 12,

characterized in that the two latching claws (535b) or the two tongue sections at least partially surround a centering projection (566) on the brake carrier (540).

14. Guide means (10, 210, 310, 410, 510) according to one of the preceding claims, characterized in that the stop surface (16b, 216b, 316b, 416b, 516b) has at least one centering recess (534a).

15, guide means (10, 210, 310, 410) according to any one of the preceding claims, characterized in that on the guide portion (14, 214, 314, 414) lateral insertion straps (37a, 37b, 38a, 38b) are formed.

16, guide means (210, 410, 510) according to any one of the preceding claims, characterized in that the guide portion (214, 414) on the connecting surface (214b, 414b) at least one laterally or centrally arranged contact claw (217a, 217b, 417a, 417b , 417c, 517c), which projects beyond the main body of the guide means (210, 410, 510).

17. Guide means (210, 410, 510) according to claim 16, characterized in that the at least one contact claw (217a, 217b, 417a, 417b, 417c, 517c) is designed to point or line on the brake carrier (40, 540th ) attack.

18, guide means (210, 410) according to claim 17, characterized in that the guide portion (214, 414) has two laterally arranged contact claws (217a, 217b, 417a, 417b) and a centrally disposed contact claw (417c), wherein the laterally arranged Contact claws (217a, 217b, 417a, 417b) and the centrally disposed contact claw (417c) are respectively provided at opposite upper and lower ends of the connection surface (214b, 414b).

A guide means (510) according to claim 17, characterized in that the guide portion (514) comprises two centrally disposed contact claws (517c) disposed at opposite upper and lower ends of the connecting surface (514b).

20. Guide means (310) according to one of the preceding claims,

characterized in that the guide portion (314) has a return spring (319) engaging the brake pad assembly (82, 84).

21, guide means (10, 210, 310, 410, 510) according to any one of the preceding claims, characterized in that at the lower mounting portion (18, 218, 318, 418, 518) a lip portion (39, 239, 339, 439, 539) for biasing and releasing the guide means (10, 210, 310, 410, 510) is provided.

22, guide means (10, 210, 310, 410, 510) according to any one of the preceding claims, characterized in that the lower holding portion (30, 230, 330, 430, 530) is formed as a projecting tongue.

23, guide means (10, 210, 310, 410, 510) according to any one of the preceding claims, characterized in that the base body (12, 212, 312, 412, 512) has a substantially S-shaped configuration.

24, guide means (10, 210, 310, 410, 510) according to any one of the preceding claims, characterized in that the guide means (10, 210, 310, 410, 510) is made of sheet metal.

25, guide means (10, 210, 310, 410, 510) according to any one of the preceding claims, characterized in that the guide means (10, 210, 310, 410, 510) is integrally formed.

26. A disc brake (100) for a motor vehicle brake system, comprising:

at least one brake pad assembly (82, 84) having a brake pad carrier (90, 92) and a brake pad (94) attached to the brake pad carrier (90, 92) which is engageable with a brake disc to achieve a braking action,

- At least one brake carrier (40, 540) having a receiving area (50) and an upper mounting portion (60) and a lower mounting portion (70), and

- At least one guide means (10, 210, 310, 410, 510) according to one of the preceding claims, on the mounting portions (60, 70) of the brake carrier (40, 540) with its fastening portions (16, 18, 216, 218, 316 , 318, 416, 418, 518) and whose guide portion (14, 214, 314, 414, 518) is received in the receiving area (50) of the brake carrier (40, 540),

wherein the brake pad carrier (90, 92) has at least one guide projection (98) which is displaceably guided in the guide section (14, 214, 314, 414, 514) of the guide means (10, 210, 310, 410, 510).

27. Disc brake (100) according to claim 26,

characterized in that the upper attachment portion (60) of the brake carrier (40, 540) is in the form of a projection, the upper holding portion (20, 220, 320, 420, 520) of the upper attachment portion (16, 216, 316, 416 , 516) of the guide means (10, 210, 310, 410, 510) is axially engageable in both directions with the upper attachment region (60) of the brake carrier (40, 540).

28. Disc brake (100) according to claim 26 or 27,

characterized in that the upper attachment region (60) has opposite side surfaces (60a, 60b), on each of which a recess (62, 64) is provided, in each of which a region of the upper retention section (20, 220, 320, 420, 520 ) of the upper attachment portion (16, 216, 316, 416, 516) of the guide means (10, 210, 310, 410, 510) engages.