WO2017009269A1 - Disk brake for a commercial vehicle - Google Patents

Disk brake for a commercial vehicle Download PDF

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Publication number
WO2017009269A1
WO2017009269A1 PCT/EP2016/066379 EP2016066379W WO2017009269A1 WO 2017009269 A1 WO2017009269 A1 WO 2017009269A1 EP 2016066379 W EP2016066379 W EP 2016066379W WO 2017009269 A1 WO2017009269 A1 WO 2017009269A1
Authority
WO
WIPO (PCT)
Prior art keywords
guide
brake
disc brake
caliper
eccentric bush
Prior art date
Application number
PCT/EP2016/066379
Other languages
German (de)
French (fr)
Inventor
Tobias Fischl
Original Assignee
Knorr-Bremse Systeme für Nutzfahrzeuge GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Knorr-Bremse Systeme für Nutzfahrzeuge GmbH filed Critical Knorr-Bremse Systeme für Nutzfahrzeuge GmbH
Publication of WO2017009269A1 publication Critical patent/WO2017009269A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • F16D55/02—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members
    • F16D55/22—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads
    • F16D55/224—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members
    • F16D55/225—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads
    • F16D55/226—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially, e.g. floating caliper disc brakes
    • F16D55/2265—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially, e.g. floating caliper disc brakes the axial movement being guided by one or more pins engaging bores in the brake support or the brake housing
    • F16D55/22655—Constructional details of guide pins
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • F16D55/02—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members
    • F16D55/22—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads
    • F16D55/224—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members
    • F16D55/225—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads
    • F16D55/226—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially, e.g. floating caliper disc brakes
    • F16D55/2265—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially, e.g. floating caliper disc brakes the axial movement being guided by one or more pins engaging bores in the brake support or the brake housing
    • F16D55/227—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially, e.g. floating caliper disc brakes the axial movement being guided by one or more pins engaging bores in the brake support or the brake housing by two or more pins

Definitions

  • the invention relates to a disc brake for a commercial vehicle according to the preamble of claim 1.
  • Such a disc brake has a sliding caliper formed as a caliper, which is held by means of fastening elements on a vehicle-side, so far as stationary brake carrier.
  • guide rails of the fasteners are attached to the brake carrier, preferably by screwing, and on the other hand guided in plain bearings of the caliper so that this, relative to a rotationally held on an axle of the vehicle brake disc, is axially displaceable.
  • brake caliper side component of the fasteners each have a guide bush is provided, which is held Deptiebegichert in a guide bore of the caliper and in which the associated guide rail is mounted.
  • One of the bearings is designed as a fixed bearing with little sliding play and serves mainly the axial guidance of the caliper, the bearing clearance is kept as low as possible.
  • the other slide bearing as a kind of secondary bearing, however, has a larger bearing clearance due to the function, since in addition to the axial guidance and tolerance compensation as well as thermally induced expansions must be considered.
  • a stop ring is used, which rests against a shoulder of the guide bush receiving bore of the caliper and on the one hand protects the sliding bush against excessive shocks and thus increases the life of the guide bushing as a whole.
  • the stop ring of the insertion limit is used when pressing the guide bush into the guide bore.
  • the elastomer layer between the metallic bearing sleeve and the guide rail can be introduced only with a corresponding effort.
  • Brake caliper acting transverse forces can only be absorbed by the fixed bearing, since this is the sliding bush of the floating bearing due to the elastomer inherent elasticity is not suitable in a corresponding extent.
  • the invention has for its object to further develop a disc brake of the generic type so that it is easier and cheaper to produce and their life is increased.
  • guide bush which is now available as an eccentric bush, can be used as part of both fasteners. However, it is preferred as a guide bush of a fastener. gungsimplantations use, especially as guide bushes of the secondary camp, which now no longer acts in the sense of a floating bearing.
  • the eccentricity is produced by a radial offset of the two centering axes of the inner circumference and the outer circumference, wherein in both cases a circular cross section is present.
  • the guide bore in which the eccentric bush is supported, as well as the guide beam, remain unchanged in configuration, that is, both in their cross-sectional contour and in their positioning.
  • both plain bearings i. the fixed and the second bearing, including the respective guide spar can be dimensioned smaller. This is particularly useful when new disc brakes are designed.
  • the guide bush is adjusted accordingly. This is to be realized with an extremely low production cost, which also contributes to the fact that it dispenses with the already mentioned sliding bush made of an elastic plastic.
  • the eccentricity of the eccentric bushing can be fixed before production and is determined by the maximum tolerances arising from machining and assembly as well as the known thermal expansion of the components involved. According to the installation situation, the eccentric bushing is therefore suitable for meeting the dimensional conditions.
  • the eccentric bush is preferably made of metal, in particular a non-ferrous metal, such as bronze or the like, in order to achieve the highest possible sliding in conjunction with the guide rail, while maintaining high stability. It is also conceivable to produce the eccentric bushing from a different material, for example a suitable dimensionally stable plastic, ceramic or the like.
  • FIG. 1 shows a partial section of a disc brake according to the invention in a perspective view
  • FIG. 2 shows the disc brake according to Fig. 1 in a front view.
  • FIG. 1 shows a disc brake for a commercial vehicle is shown, with a designed as a sliding caliper 1, which engages over a brake disc 2 on the vehicle and in the two, in the case of braking on both sides of the brake disc 2 be pressed brake pads 3 are arranged.
  • the brake caliper 1 relative to the brake disc 2 axially slidably mounted on two spaced apart and designed as a sliding bearing fasteners 5, 6, wherein the right side recognizable fastener 5 forms a fixed bearing with little play.
  • the left side recognizable fastening element 6 as a secondary bearing has a guide bush, which is inventively designed as an eccentric bushing 9 and which is held Agebegichert in a guide bore 8 of the caliper 1.
  • a guide rail 7 is guided, which is connected by a screw 10 with a stationary brake carrier 4.
  • the fastener 5 has such a guide rail 7, as well as a Guide bush, which is formed in the example but only on the fastener 6 as an eccentric bushing 9.
  • FIG. 2 shows a situation in which the eccentric bushing 9 is rotated in such a way that on the one hand production-related tolerances of the brake caliper 1 are compensated and on the other hand thermally induced expansions of the caliper 1 are taken into account.
  • centering axis of the guide rail 7 is offset relative to the centering axis of the guide bore 8 and that by a measure X and a measure Y.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)

Abstract

A disk brake for a commercial vehicle, comprising a brake caliper (1) that engages over a brake disk, said brake caliper being axially displaceably held relative to the brake disk on a fixed backing plate (4) by two securing elements (5, 6), each of which is positioned in a guide bore (8) of the brake caliper (1) and which are designed as plain bearings. Each plain bearing has a guide bush that is secured against displacement in the guide bore (8) of the brake caliper (1). A guide tube (7) that is connected to the backing plate (4) is mounted in the guide bushes. The disk brake is designed such that at least one of the guide bushes is designed as an eccentric bush (9).

Description

BESCHREIBUNG  DESCRIPTION
Scheibenbremse für ein Nutzfahrzeug  Disc brake for a commercial vehicle
Die Erfindung betrifft eine Scheibenbremse für ein Nutzfahrzeug gemäß dem Oberbegriff des Anspruchs 1 . The invention relates to a disc brake for a commercial vehicle according to the preamble of claim 1.
Eine solche Scheibenbremse weist einen als Schiebesattel ausgebildeten Bremssattel auf, der mittels Befestigungselementen an einem fahrzeugseitigen, also insoweit ortsfesten Bremsträger gehalten ist. Such a disc brake has a sliding caliper formed as a caliper, which is held by means of fastening elements on a vehicle-side, so far as stationary brake carrier.
Dabei sind Führungsholme der Befestigungselemente am Bremsträger befestigt, vorzugsweise durch Verschrauben, und andererseits in Gleitlagern des Bremssattels so geführt, dass dieser, bezogen auf eine an einer Achse des Fahrzeugs verdrehsicher gehaltenen Bremsscheibe, axial verschiebbar ist. In this case, guide rails of the fasteners are attached to the brake carrier, preferably by screwing, and on the other hand guided in plain bearings of the caliper so that this, relative to a rotationally held on an axle of the vehicle brake disc, is axially displaceable.
Als bremssattelseitige Komponente der Befestigungselemente ist jeweils eine Führungsbuchse vorgesehen, die verschiebegesichert in einer Führungsbohrung des Bremssattels gehalten ist und in der der zugeordnete Führungsholm gelagert ist. As brake caliper side component of the fasteners each have a guide bush is provided, which is held verschiebegichert in a guide bore of the caliper and in which the associated guide rail is mounted.
Eines der Gleitlager ist als Festlager mit geringem Gleitspiel ausgebildet und dient in der Hauptsache der axialen Führung des Bremssattels, wobei das Lagerspiel so gering wie möglich gehalten ist. One of the bearings is designed as a fixed bearing with little sliding play and serves mainly the axial guidance of the caliper, the bearing clearance is kept as low as possible.
Das andere Gleitlager, als sozusagen Zweitlager hingegen weist funktionsbedingt ein größeres Lagerspiel auf, da neben der axialen Führung auch ein Toleranzausgleich sowie thermisch bedingte Ausdehnungen berücksichtigt werden müssen. The other slide bearing, as a kind of secondary bearing, however, has a larger bearing clearance due to the function, since in addition to the axial guidance and tolerance compensation as well as thermally induced expansions must be considered.
Allerdings können aufgrund des größeren Lagerspiels des Loslagers im Fahrbetrieb Klappergeräusche entstehen, zu deren Verhinderung bzw. Dämpfung bei der bekannten Scheibenbremse eine aus Kunststoff, insbesondere einem Elastomer bestehende Gleitbuchse Verwendung findet, in der der Führungsholm axial verschieblich gelagert ist. Diese Gleitbuchse ist in einer Lagerhülse aus Metall, insbesondere aus Stahlblech verschiebegesichert gehalten, die wiederum in die Führungsbohrung des Bremssattels eingepresst, also reibschlüssig darin gehalten ist, wobei die Gleitbuchse und die Lagerhülse Bestandteil der genannten Führungsbuchse sind. However, due to the larger bearing clearance of the movable bearing while driving rattling noises may arise whose prevention or damping in the known disc brake is made of plastic, in particular an elastomer sliding bush is used, in which the guide rail is mounted axially displaceable. This slide bush is held displaceably secured in a bearing sleeve made of metal, in particular made of sheet steel, which in turn is pressed into the guide bore of the caliper, so it is frictionally held therein, wherein the sliding bush and the bearing sleeve are part of said guide bushing.
Als weiteres Element der Führungsbuchse des Loslagers kommt ein Anschlag- ring zum Einsatz, der an einer Schulter der die Führungsbuchse aufnehmenden Bohrung des Bremssattels anliegt und der zum einen die Gleitbuchse vor zu starken Stößen schützt und damit die Lebensdauer der Führungsbuchse insgesamt erhöht. Zum anderen dient der Anschlagring der Einschubbegrenzung beim Eindrücken der Führungsbuchse in die Führungsbohrung. As a further element of the guide bush of the movable bearing is a stop ring is used, which rests against a shoulder of the guide bush receiving bore of the caliper and on the one hand protects the sliding bush against excessive shocks and thus increases the life of the guide bushing as a whole. On the other hand, the stop ring of the insertion limit is used when pressing the guide bush into the guide bore.
Insbesondere aufgrund der mehrteiligen Ausbildung der Führungsbuchse des Loslagers gestaltet sich deren Herstellung relativ aufwendig und damit teuer, wobei die Elastomerschicht zwischen der metallischen Lagerhülse und dem Führungsholm nur mit einem entsprechenden Aufwand eingebracht werden kann. In particular, due to the multi-part design of the guide bush of the floating bearing whose manufacture is relatively complex and therefore expensive, the elastomer layer between the metallic bearing sleeve and the guide rail can be introduced only with a corresponding effort.
Darüber hinaus ist eine belastungsoptimierte Auslegung der Scheibenbremse insofern eingeschränkt, als im Fall einer Bremsung auftretende, auf den In addition, a load-optimized design of the disc brake is limited insofar as occurring in the case of braking, on the
Bremssattel einwirkende Querkräfte lediglich vom Festlager aufgenommen werden können, da hierzu die Gleitbuchse des Loslagers aufgrund der dem Elastomer innewohnenden Elastizität nicht in einem entsprechenden Maße geeignet ist. Brake caliper acting transverse forces can only be absorbed by the fixed bearing, since this is the sliding bush of the floating bearing due to the elastomer inherent elasticity is not suitable in a corresponding extent.
Daraus ergibt sich, dass das Festlager entsprechend groß dimensioniert sein muss, was naturgemäß einer Kostenoptimierung entgegensteht. It follows that the fixed bearing must be dimensioned correspondingly large, which naturally precludes cost optimization.
Der Erfindung liegt die Aufgabe zugrunde, eine Scheibenbremse der gattungsgemäßen Art so weiterzuentwickeln, dass sie einfacher und kostengünstiger herstellbar ist und ihre Standzeit erhöht wird. The invention has for its object to further develop a disc brake of the generic type so that it is easier and cheaper to produce and their life is increased.
Diese Aufgabe wird durch eine Scheibenbremse mit den Merkmalen des Anspruchs 1 gelöst. This object is achieved by a disc brake with the features of claim 1.
Die entsprechend der Erfindung ausgebildete Führungsbuchse, die nun als Exzenterbuchse vorliegt, kann als Bestandteil beider Befestigungselemente eingesetzt werden. Bevorzugt findet sie jedoch als Führungsbuchse eines Befesti- gungselementes Verwendung, insbesondere als Führungsbuchsen des Zweitlagers, das nun nicht mehr im Sinne eines Loslagers fungiert. The trained according to the invention guide bush, which is now available as an eccentric bush, can be used as part of both fasteners. However, it is preferred as a guide bush of a fastener. gungselementes use, especially as guide bushes of the secondary camp, which now no longer acts in the sense of a floating bearing.
Dabei wird die Exzentrität hergestellt durch einen radialen Versatz der beiden Zentrierachsen des Innenumfangs und des Außenumfangs, wobei in beiden Fällen ein kreisrunder Querschnitt vorliegt. In this case, the eccentricity is produced by a radial offset of the two centering axes of the inner circumference and the outer circumference, wherein in both cases a circular cross section is present.
Die Führungsbohrung, in der die Exzenterbuchse gelagert ist, ebenso wie der Führungsholm bleiben in ihrer Konfiguration unverändert, d.h., sowohl in ihrer Querschnittskontur wie auch in ihrer Positionierung. The guide bore in which the eccentric bush is supported, as well as the guide beam, remain unchanged in configuration, that is, both in their cross-sectional contour and in their positioning.
Im Gegensatz zum Stand der Technik, bei dem das Loslager im Wesentlichen nicht in der Lage ist, Querkräfte aufzunehmen, besteht bei der erfindungsgemäßen Ausgestaltung sehr wohl diese Möglichkeit, so dass beide Gleitlager, d.h. das Fest- und das Zweitlager, einschließlich des jeweiligen Führungsholms geringer dimensioniert sein können. Dies bietet sich insbesondere dann an, wenn neue Scheibenbremsen konzipiert werden. In contrast to the prior art, in which the loose bearing is substantially unable to absorb lateral forces, there is in the embodiment according to the invention very well this possibility, so that both plain bearings, i. the fixed and the second bearing, including the respective guide spar can be dimensioned smaller. This is particularly useful when new disc brakes are designed.
Im anderen Fall, nämlich dann, wenn der Bremssattel und/oder der Führungsholm, zumindest des Zweitlagers, unverändert bleiben sollen, ist die Führungsbuchse entsprechend anzupassen. Dabei ist dies mit einem äußerst geringen Fertigungsaufwand zu realisieren, zu dem auch beiträgt, dass auf die bereits erwähnte Gleitbuchse aus einem elastischen Kunststoff verzichtet wird. In the other case, namely when the caliper and / or the guide rail, at least the secondary bearing to remain unchanged, the guide bush is adjusted accordingly. This is to be realized with an extremely low production cost, which also contributes to the fact that it dispenses with the already mentioned sliding bush made of an elastic plastic.
Die Exzentrität der Exzenterbuchse ist vor einer Fertigung festlegbar und wird bestimmt durch die maximal anfallenden Toleranzen aus der Bearbeitung und Montage sowie der bekannten Wärmeausdehnung der beteiligten Bauteile. Entsprechend der Einbausituation ist somit die Exzenterbuchse geeignet, den maßlichen Gegebenheiten zu entsprechen. The eccentricity of the eccentric bushing can be fixed before production and is determined by the maximum tolerances arising from machining and assembly as well as the known thermal expansion of the components involved. According to the installation situation, the eccentric bushing is therefore suitable for meeting the dimensional conditions.
Damit ist es möglich, die Auslegung der angrenzenden Bauteile weitgehend spielfrei zu gestalten, zumal die beiden Durchmesser der Exzenterbuchse jeweils sehr präzise gefertigt werden können, ohne besonderen Fertigungsaufwand. This makes it possible to make the design of the adjacent components largely free of play, especially since the two diameters of the eccentric bush can be made very precisely each, without special manufacturing effort.
Durch die entsprechende Verstellung der Exzenterbuchse ist der Bremssattel derart geführt, dass die im Fahrbetrieb auftretenden Rüttelbewegungen aufgenommen werden, ohne zu Klappergeräuschen zu führen, was bislang, wie geschildert, durch die elastische Gleitbuchse verhindert wird. Im Übrigen besteht die Exzenterbuchse bevorzugt aus Metall, insbesondere einem Buntmetall, wie Bronze oder dergleichen, um eine höchstmögliche Gleitfähigkeit im Zusammenspiel mit dem Führungsholm zu erreichen, bei gleichzeitig hoher Stabilität. Denkbar ist aber auch, die Exzenterbuchse aus einem anderen Material herzustellen, beispielsweise einem geeigneten formstabilen Kunststoff, Keramik oder dergleichen. The corresponding adjustment of the eccentric bushing of the caliper is performed so that the vibrations occurring during driving are recorded without leading to rattling noises, which so far, as described, is prevented by the elastic bushing. Incidentally, the eccentric bush is preferably made of metal, in particular a non-ferrous metal, such as bronze or the like, in order to achieve the highest possible sliding in conjunction with the guide rail, while maintaining high stability. It is also conceivable to produce the eccentric bushing from a different material, for example a suitable dimensionally stable plastic, ceramic or the like.
Weitere vorteilhafte Ausbildungen der Erfindung sind in den Unteransprüchen gekennzeichnet. Further advantageous embodiments of the invention are characterized in the subclaims.
Ein Ausführungsbeispiel der Erfindung wird nachfolgend anhand der beigefügten Zeichnungen beschrieben. An embodiment of the invention will be described below with reference to the accompanying drawings.
Es zeigen: Show it:
Figur 1 einen Teilausschnitt einer erfindungsgemäßen Scheibenbremse in einer perspektivischen Ansicht 1 shows a partial section of a disc brake according to the invention in a perspective view
Figur 2 die Scheibenbremse nach Fig. 1 in einer Vorderansicht. 2 shows the disc brake according to Fig. 1 in a front view.
In der Figur 1 ist eine Scheibenbremse für ein Nutzfahrzeug dargestellt, mit einem als Schiebesattel ausgebildeten Bremssattel 1 , der eine fahrzeugseitige Bremsscheibe 2 übergreift und in dem zwei, im Fall einer Bremsung beidseitig an die Bremsscheibe 2 anpressbare Bremsbeläge 3 angeordnet sind. 1 shows a disc brake for a commercial vehicle is shown, with a designed as a sliding caliper 1, which engages over a brake disc 2 on the vehicle and in the two, in the case of braking on both sides of the brake disc 2 be pressed brake pads 3 are arranged.
Hierzu ist der Bremssattel 1 , bezogen auf die Bremsscheibe 2 axial verschiebbar an zwei abständig zueinander angeordneten und als Gleitlager ausgebildeten Befestigungselementen 5, 6 gelagert, wobei das rechtsseitig erkennbar Befestigungselement 5 ein Festlager mit geringem Spiel bildet. For this purpose, the brake caliper 1, relative to the brake disc 2 axially slidably mounted on two spaced apart and designed as a sliding bearing fasteners 5, 6, wherein the right side recognizable fastener 5 forms a fixed bearing with little play.
Das linksseitig erkennbare Befestigungselement 6 als Zweitlager weist eine Führungsbuchse auf, die erfindungsgemäß als Exzenterbuchse 9 ausgebildet ist und die verschiebegesichert in einer Führungsbohrung 8 des Bremssattels 1 gehalten ist. The left side recognizable fastening element 6 as a secondary bearing has a guide bush, which is inventively designed as an eccentric bushing 9 and which is held verschiebegichert in a guide bore 8 of the caliper 1.
In der Exzenterbuchse 9 ist ein Führungsholm 7 geführt, der mittels einer Schraube 10 mit einem ortsfesten Bremsträger 4 verbunden ist. Auch das Befestigungselement 5 weist einen solchen Führungsholm 7 auf, ebenso wie eine Führungsbuchse, die im Beispiel jedoch nur am Befestigungselement 6 als Exzenterbuchse 9 ausgebildet ist. In the eccentric bush 9, a guide rail 7 is guided, which is connected by a screw 10 with a stationary brake carrier 4. Also, the fastener 5 has such a guide rail 7, as well as a Guide bush, which is formed in the example but only on the fastener 6 as an eccentric bushing 9.
In der Figur 2 ist eine Situation dargestellt, in der die Exzenterbuchse 9 derart verdreht ist, dass zum einen fertigungsbedingte Toleranzen des Bremssattels 1 ausgeglichen und zum anderen thermisch bedingte Ausdehnungen des Bremssattels 1 berücksichtigt sind. FIG. 2 shows a situation in which the eccentric bushing 9 is rotated in such a way that on the one hand production-related tolerances of the brake caliper 1 are compensated and on the other hand thermally induced expansions of the caliper 1 are taken into account.
Dabei ist zu erkennen, dass die Zentrierachse des Führungsholms 7 gegenüber der Zentrierachse der Führungsbohrung 8 entsprechend versetzt ist und zwar um ein Maß X und ein Maß Y. It can be seen that the centering axis of the guide rail 7 is offset relative to the centering axis of the guide bore 8 and that by a measure X and a measure Y.
Die Mittelachsen der Führungsholme 7 beider Befestigungselemente 5, 6 liegen in einer gemeinsamen horizontalen Ebene, wie gleichfalls durch eine strichpunktierte Linie Z deutlich erkennbar ist. The central axes of the guide rails 7 of both fastening elements 5, 6 lie in a common horizontal plane, as is also clearly recognizable by a dot-dash line Z.
BEZUGSZEICHENLISTE LIST OF REFERENCE NUMBERS
1 Bremssattel 1 caliper
2 Bremsscheibe 2 brake disc
3 Bremsbelag 3 brake pad
4 Bremsträger  4 brake carrier
5 Befestigungselennent 5 fastening labels
6 Befestigungselennent6 fastening label
7 Führungsholm7 guide rail
8 Führungsbohrung8 pilot hole
9 Exzenterbuchse 9 eccentric bush

Claims

Ansprüche claims
1 . Scheibenbremse für ein Nutzfahrzeug, mit einem eine Bremsscheibe (2) übergreifenden Bremssattel (1 ), der durch zwei, jeweils in einer Führungsbohrung (8) des Bremssattels (1 ) angeordnete und als Gleitlager ausgebildete Befestigungselemente (5, 6), bezogen auf die Bremsscheibe (2), axial verschiebbar an einem ortsfesten Bremsträger (4) gehalten ist, wobei die Gleitlager jeweils eine verschiebegesichert in der Führungsbohrung (8) des Bremssattels (1 ) gehaltene Führungsbuchse aufweisen, in denen ein mit dem Bremsträger (4) verbundener Führungsholm (7) gelagert ist, 1 . Disc brake for a commercial vehicle, comprising a brake caliper (1) which engages over a brake disc (2) and which is fastened by two fastening elements (5, 6) arranged in each case in a guide bore (8) of the caliper (1) and designed as sliding bearings, relative to the brake disc (2), axially displaceable on a stationary brake carrier (4) is held, wherein the sliding bearings each have a verschiebegesichert in the guide bore (8) of the brake caliper (1) held guide bush in which a with the brake carrier (4) connected guide rail (7 ) is stored,
dadurch gekennzeichnet, dass characterized in that
mindestens eine der Führungsbuchsen als Exzenterbuchse (9) ausgebildet ist. at least one of the guide bushes is designed as an eccentric bush (9).
2. Scheibenbremse, bei der ein Befestigungselement (5) als Festlager und das andere Befestigungselement (6) als Zweitlager ausgebildet ist, 2. Disc brake, in which a fastening element (5) is designed as a fixed bearing and the other fastening element (6) as a secondary bearing,
dadurch gekennzeichnet, dass characterized in that
die Exzenterbuchse (9) Bestandteil des Zweitlagers ist. the eccentric bush (9) is part of the secondary warehouse.
3. Scheibenbremse nach Anspruch 1 oder 2, 3. Disc brake according to claim 1 or 2,
dadurch gekennzeichnet, dass characterized in that
die Exzenterbuchse (9) einen kreisrunden Außen- und einen kreisrunden Innenumfang aufweist. the eccentric bush (9) has a circular outer and a circular inner circumference.
4. Scheibenbremse nach einem der vorhergehenden Ansprüche, 4. Disc brake according to one of the preceding claims,
dadurch gekennzeichnet, dass characterized in that
die Zentrierachsen des Innenumfangs und des Außenumfangs der Exzenterbuchse (9) versetzt zueinander angeordnet sind. the centering axes of the inner circumference and the outer circumference of the eccentric bush (9) are offset from one another.
5. Scheibenbremse nach einem der vorhergehenden Ansprüche, 5. Disc brake according to one of the preceding claims,
dadurch gekennzeichnet, dass characterized in that
die maximale Exzentrität der maximalen Toleranz zwischen der Zentrierachse der Führungsbohrung (8) des Bremssattels (1 ) und des Führungsholms (7) sowie einer thermischen Ausdehnung des Bremssattels (1 ) entspricht. the maximum eccentricity of the maximum tolerance between the centering axis of the guide bore (8) of the caliper (1) and the guide rail (7) and a thermal expansion of the caliper (1) corresponds.
6. Scheibenbremse nach einem der vorhergehenden Ansprüche, 6. Disc brake according to one of the preceding claims,
dadurch gekennzeichnet, dass characterized in that
die Exzenterbuchse (9) gegenüber dem Führungsholm (7) verdrehbar ist. the eccentric bush (9) is rotatable relative to the guide rail (7).
7. Scheibenbremse nach einem der vorhergehenden Ansprüche, 7. Disc brake according to one of the preceding claims,
dadurch gekennzeichnet, dass characterized in that
die Exzenterbuchse (9) aus einem Metall, vorzugsweise einem Buntmetall besteht. the eccentric bush (9) consists of a metal, preferably a non-ferrous metal.
8. Scheibenbremse nach einem der vorhergehenden Ansprüche, 8. Disc brake according to one of the preceding claims,
dadurch gekennzeichnet, dass characterized in that
die Exzenterbuchse (9) aus einem formstabilen Kunststoff oder aus Keramik gebildet ist. the eccentric bush (9) is formed of a dimensionally stable plastic or of ceramic.
9. Scheibenbremse nach einem der vorhergehenden Ansprüche, 9. Disc brake according to one of the preceding claims,
dadurch gekennzeichnet, dass characterized in that
der Außendurchmesser der Exzenterbuchse (9) dem lichten Durchmesser der Führungsbohrung (8) entspricht. the outer diameter of the eccentric bush (9) corresponds to the clear diameter of the guide bore (8).
10. Scheibenbremse nach einem der vorhergehenden Ansprüche, 10. Disc brake according to one of the preceding claims,
dadurch gekennzeichnet, dass characterized in that
der lichte Durchmesser der Exzenterbuchse (9) dem Außendurchmesser des Führungsholms (7) entspricht. the clear diameter of the eccentric bushing (9) corresponds to the outer diameter of the guide spar (7).
PCT/EP2016/066379 2015-07-10 2016-07-11 Disk brake for a commercial vehicle WO2017009269A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015111165.9A DE102015111165A1 (en) 2015-07-10 2015-07-10 Disc brake for a commercial vehicle
DE102015111165.9 2015-07-10

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WO2017009269A1 true WO2017009269A1 (en) 2017-01-19

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WO (1) WO2017009269A1 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3682277A (en) * 1970-07-24 1972-08-08 Girling Ltd Disc brakes and mounting structure therefor
US4061209A (en) * 1974-03-12 1977-12-06 Girling Limited Disc brake caliper and support structure
DE3032513A1 (en) * 1980-08-29 1982-04-29 Alfred Teves Gmbh, 6000 Frankfurt Floating caliper vehicle disc brake - has pad caliper guided on carrier bolts via eccentric resilient bushes pressing caliper against carrier in mounted position
DE20015344U1 (en) * 2000-09-05 2001-01-25 Lee Chi Enterprises Co., Ltd., Changhua Disc brake caliper assembly for a bicycle
US20020020590A1 (en) * 2000-07-21 2002-02-21 Noboru Kuroyanagi Disc brake
US20140262637A1 (en) * 2013-03-15 2014-09-18 Lucas Automotive Gmbh Guide Pin For Disc Brake Assembly and Disc Brake Assembly Including Such A Guide Pin

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2003028C3 (en) * 1969-01-25 1974-10-17 Girling Ltd., Birmingham, Warwickshire (Grossbritannien) Partly lined disc brake
JPS5861340A (en) * 1981-10-06 1983-04-12 Nissan Motor Co Ltd Disc brake
DE3544362A1 (en) * 1985-12-14 1987-06-19 Teves Gmbh Alfred Pin guide for a spot-type disc brake

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3682277A (en) * 1970-07-24 1972-08-08 Girling Ltd Disc brakes and mounting structure therefor
US4061209A (en) * 1974-03-12 1977-12-06 Girling Limited Disc brake caliper and support structure
DE3032513A1 (en) * 1980-08-29 1982-04-29 Alfred Teves Gmbh, 6000 Frankfurt Floating caliper vehicle disc brake - has pad caliper guided on carrier bolts via eccentric resilient bushes pressing caliper against carrier in mounted position
US20020020590A1 (en) * 2000-07-21 2002-02-21 Noboru Kuroyanagi Disc brake
DE20015344U1 (en) * 2000-09-05 2001-01-25 Lee Chi Enterprises Co., Ltd., Changhua Disc brake caliper assembly for a bicycle
US20140262637A1 (en) * 2013-03-15 2014-09-18 Lucas Automotive Gmbh Guide Pin For Disc Brake Assembly and Disc Brake Assembly Including Such A Guide Pin

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