WO2021078576A1 - Disc brake for a utility vehicle, and brake lining for a disc brake - Google Patents

Disc brake for a utility vehicle, and brake lining for a disc brake Download PDF

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Publication number
WO2021078576A1
WO2021078576A1 PCT/EP2020/078682 EP2020078682W WO2021078576A1 WO 2021078576 A1 WO2021078576 A1 WO 2021078576A1 EP 2020078682 W EP2020078682 W EP 2020078682W WO 2021078576 A1 WO2021078576 A1 WO 2021078576A1
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WO
WIPO (PCT)
Prior art keywords
brake
lining
disc
carrier plate
retaining spring
Prior art date
Application number
PCT/EP2020/078682
Other languages
German (de)
French (fr)
Inventor
Stefan Huber
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 WO2021078576A1 publication Critical patent/WO2021078576A1/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D55/00Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • F16D55/02Brakes 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
    • F16D55/22Brakes 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00Parts or details
    • F16D65/02Braking members; Mounting thereof
    • F16D65/04Bands, shoes or pads; Pivots or supporting members therefor
    • F16D65/092Bands, shoes or pads; Pivots or supporting members therefor for axially-engaging brakes, e.g. disc brakes
    • F16D65/095Pivots or supporting members therefor
    • F16D65/097Resilient means interposed between pads and supporting members or other brake parts
    • F16D65/0973Resilient means interposed between pads and supporting members or other brake parts not subjected to brake forces
    • F16D65/0974Resilient means interposed between pads and supporting members or other brake parts not subjected to brake forces acting on or in the vicinity of the pad rim in a direction substantially transverse to the brake disc axis
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D55/00Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • F16D2055/0004Parts or details of disc brakes
    • F16D2055/0016Brake calipers
    • F16D2055/0029Retraction devices
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00Parts or details
    • F16D65/02Braking members; Mounting thereof
    • F16D2065/13Parts or details of discs or drums
    • F16D2065/134Connection
    • F16D2065/1392Connection elements
    • F16D2065/1396Ancillary resilient elements, e.g. anti-rattle or retraction springs

Definitions

  • the invention relates to a disc brake for a commercial vehicle according to the preamble of claim 1 and a brake pad for a disc brake se.
  • the brake linings are tensioned by an application device initially by pressing the application-side brake lining against the brake disc and then pressing the opposite, reaction-side brake lining.
  • the brake pad on the action side is pressed against the brake disc by means of the brake plunger of the application device, while the brake pad designed as a sliding caliper is shifted against the application device of the brake pad on the action side to press the brake pad on the action side.
  • the brake caliper After releasing the brake, in the known disc brake, the brake caliper remains in this last-mentioned position, in which the brake linings, but at least the reaction-side, rests on the brake disc without pressure, but rubbing.
  • These spreading elements have spring arms which mature into the opposing brake linings, in particular in their lining carrier plates, and are held on a vehicle-side brake carrier. This construction prevents residual grinding torques from occurring, which lead to increased wear on the brake linings.
  • a disc brake with a stationary brake carrier which has two lining shafts for receiving the brake linings, each lining shaft being delimited in both circumferential directions of the brake disc by brake carrier horns, on which a friction lining bearing plate of the respective brake lining is in Application direction slidably supported.
  • a spring arrangement which acts axially on the brake linings in the brake release direction and supports setting the clearance between the brake shoes and the brake disc after the brake is released.
  • This spring arrangement has two expansion springs, each with two spring arms, which rest resiliently above the friction lining on the lining carrier plate, the respective expansion spring being fixed on a stationary component, for example on the brake carrier.
  • a lining retaining spring is attached to the lining carrier plates of the brake linings on the side facing away from the base of the lining shaft of the brake carrier and facing an assembly opening of the brake caliper, on which a retaining clip that spans the assembly opening in the direction of displacement of the brake linings rests, so that the Brake pads are pressed against the bottom of the pad well.
  • the pad retaining springs also stand in the way of a positioning of the resetting device that meets the requirements.
  • the invention is based on the object of further developing a disc brake and a brake lining of the generic type in such a way that the service life of the brake linings is increased and the operating costs are reduced overall by means of the simplest construction.
  • the design according to the invention offers both the disc brake and the brake lining considerable advantages. These result, among other things, from the extremely simple implementation of the invention, since only the pad retaining spring and / or the pad carrier plate of the brake pad have to be configured accordingly, which can be done essentially at no cost. The invention thus meets the constant demand for cost optimization.
  • the lining retaining spring is arranged with its side facing the lining carrier plate parallel to the brake disk axis, while the lining carrier plate, according to the invention, is designed as a sloping slope towards the friction lining, the lining carrier plate having a rear edge relative to the friction lining rests against the lining retaining spring in areas such that it is deformed against the spring force when the brake lining is moved in the direction of the brake disc.
  • the energy stored in the process causes the brake lining to be moved back into its disengaged position when the brake is released.
  • both the pad retaining spring and the pad carrier plate is particularly advantageous, that is, both of them are attached.
  • the sides lying opposite each other are designed as bevels, the lining retaining spring being tensioned when the brake lining is moved towards the brake disc in such a way that the brake lining is moved back into its starting position when the brake is released.
  • the bevel preferably runs at an angle, based on the central axis of the brake disc, at an acute angle of 10 to 30 °, preferably 15 to 25 °, that is, based on the flat rear side of the lining carrier plate, preferably between 60 ° and 80 °, preferably between 65 ° and 75 °.
  • the incline of the pad retaining spring in the contact area with the pad carrier plate can be formed by partial machining, for example by exposing a correspondingly shaped tab, a ramp or the like. This, too, can essentially be produced without additional manufacturing costs.
  • Figure 1 shows a disc brake according to the prior art in a
  • Figures 2-4 different embodiments of the disc brake according to the invention, each in a schematic partial side view.
  • FIG. 1 a disk brake according to the prior art is shown, which is provided with the reference numeral 1 as a whole.
  • This disc brake has a brake caliper 2 which overlaps a vehicle-side brake disc 9 and is mounted on a stationary brake carrier, from which brake carrier horns 4 can be seen, in an axially displaceable manner with respect to an axis A of the brake disc 9.
  • brake pads 3 are arranged on both sides of the brake disc, which have a pad carrier plate 5 and a friction lining 6 attached to it.
  • the brake linings 3 are each positioned in a lining well of the brake carrier, each lining well being delimited in the direction of rotation of the brake disc 9 by the brake carrier horns 4.
  • the brake linings 3 are held under pretension in the lining wells, for which purpose a lining retaining spring 7 is connected to a convex side of the respective lining carrier plate 5, on which a lining retainer 8 is supported and spans an assembly opening of the brake caliper 2.
  • FIG. 2 shows the lining retaining spring 7 with a side facing the brake lining 3 and running axially parallel to the axis of rotation A, while the lining carrier plate 5 on the side facing the lining retaining spring 7 is designed as a bevel 11 which is inclined in the direction of the friction lining 6.
  • the lining retaining spring 7 is rotated in accordance with the inclination of the incline 11 of the lining carrier plate 5, so that after a relative movement of the brake lining 3 during braking, the lining retaining spring 7 is tensioned and after releasing the brake by the effective spring forces of the Bremsbe lay 3 is returned to a loose position.
  • a tab 10 is provided on the lining retaining spring 7, corresponding to the incline 11, which the
  • the brake lining 3 is held so that it can be displaced relative to the lining retaining spring 7, parallel to the axis A of the brake disc 9.
  • the slope preferably runs at an angle ⁇ , based on the central axis of the brake disc, at an acute angle of 10 to 30 °, preferably 15 to 25 °, ie, based on the flat rear side of the lining carrier plate, preferably between 60 ° and 80 ° , preferably between 65 ° and 75 °.

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

Abstract

A disc brake (1) for a utility vehicle, with a brake calliper (2) which engages over a brake disc (9) and is configured as a sliding calliper, two brake linings (3) which are arranged therein, can be moved in opposed directions in the direction of the brake disc (9), each have a lining carrier plate (5) and a friction lining (6) which is fastened thereto, and are arranged in each case under prestress by means of a lining holder spring (7) in a lining slot of a vehicle-side brake carrier, which lining slot is delimited in the direction of rotation of the brake disc (9) by way of brake carrier horns (4), and with resetting devices, by way of which the brake lining (3) can be reset after a braking-induced displacement and release of the brake, is configured in such a way that at least one of the regions, which face one another and make mutual contact, of the lining carrier plate (5) and/or of the lining holder spring (7) is configured as a slope (11) which falls towards the friction lining (6).

Description

Scheibenbremse für ein Nutzfahrzeug sowie Bremsbelag für eine Disc brake for a commercial vehicle and brake lining for a
Scheibenbremse Disc brake
Beschreibung description
Die Erfindung betrifft eine Scheibenbremse für ein Nutzfahrzeug nach dem Oberbegriff des Anspruchs 1 sowie einen Bremsbelag für eine Scheibenbrem se. The invention relates to a disc brake for a commercial vehicle according to the preamble of claim 1 and a brake pad for a disc brake se.
Bei einer Bremsung mittels einer derartigen Scheibenbremse erfolgt eine Zu spannung der Bremsbeläge durch eine Zuspanneinrichtung zunächst durch Andrücken des zuspannseitigen Bremsbelags gegen die Bremsscheibe und einem nachfolgenden Anpressen des gegenüberliegenden, reaktionsseitigen Bremsbelages. When braking by means of such a disc brake, the brake linings are tensioned by an application device initially by pressing the application-side brake lining against the brake disc and then pressing the opposite, reaction-side brake lining.
Der aktionsseitige Bremsbelag wird dabei über Bremsstempel der Zuspanneinrichtung gegen die Bremsscheibe gepresst, während zum Andrücken des reaktionsseitigen Bremsbelages der als Schiebesattel ausgebildete Bremssattel entgegen der Zuspanneinrichtung des aktionsseitigen Bremsbelages verschoben wird. The brake pad on the action side is pressed against the brake disc by means of the brake plunger of the application device, while the brake pad designed as a sliding caliper is shifted against the application device of the brake pad on the action side to press the brake pad on the action side.
Nach einem Lösen der Bremse verbleibt bei der bekannten Scheibenbremse der Bremssattel in dieser letztgenannten Position, in der die Bremsbeläge, zumindest aber der reaktionsseitige, zwar drucklos, jedoch schleifend an der Bremsscheibe anliegt. After releasing the brake, in the known disc brake, the brake caliper remains in this last-mentioned position, in which the brake linings, but at least the reaction-side, rests on the brake disc without pressure, but rubbing.
Die dadurch im Fährbetrieb auftretenden sogenannten Restschleifmomente führen zu einem erhöhten Kraftstoffverbrauch des Fahrzeugs ebenso wie zu einer Verringerung der Standzeit sowohl der Bremsscheibe wie auch der Bremsbeläge. The so-called residual grinding torques that occur during ferry operation lead to an increased fuel consumption of the vehicle as well as to a reduction in the service life of both the brake disc and the brake linings.
Während des Fährbetriebs erfolgt zwar ein geringes Lösen der Bremsbeläge durch einen Taumelschlag der Bremsscheibe sowie durch Erschütterungen und Querbeschleunigungen bei Kurvenfahrten, jedoch sind diese Effekte nicht aus reichend, um das genannte Schleifen wirksam zu verhindern. During the ferry operation there is a slight loosening of the brake pads due to wobbling of the brake disc as well as vibrations and lateral acceleration when cornering, but these effects are not sufficient to effectively prevent the said dragging.
In der WO 2016 / 202778 A1 ist deshalb vorgeschlagen, eine Scheibenbremse mit eine Rückstelleinrichtung bildenden Spreizelementen zu versehen, mit denen die Bremsbeläge der Scheibenbremse nach Beendigung einer Bremsung aktiv zurückgestellt werden, d.h., aus dem Angriffsbereich einer fahrzeugseitigen Bremsscheibe gebracht werden. In WO 2016/202778 A1 it is therefore proposed to provide a disc brake with spreading elements which form a restoring device and which the brake linings of the disc brake use after braking has ended be actively reset, that is, brought out of the attack area of a vehicle-side brake disc.
Diese Spreizelemente weisen Federarme auf, die in die sich gegenüberliegen den Bremsbeläge, insbesondere in deren Belagträgerplatten eing reifen und an einem fahrzeugseitigen Bremsträger gehalten sind. Diese Konstruktion verhindert, dass Restschleifmomente entstehen, die zu einem erhöhten Verschleiß der Bremsbeläge führen. These spreading elements have spring arms which mature into the opposing brake linings, in particular in their lining carrier plates, and are held on a vehicle-side brake carrier. This construction prevents residual grinding torques from occurring, which lead to increased wear on the brake linings.
Aus der DE 4301 621 A ist eine Scheibenbremse mit einem ortsfesten Bremsträger bekannt, der zwei Belagschächte zur Aufnahme der Bremsbeläge aufweist, wobei jeder Belagschacht in beide Umfangsrichtungen der Bremsschei be durch Bremsträgerhörner begrenzt ist, an denen sich eine einen Reibbelag tragende Belagträgerplatte des jeweiligen Bremsbelages in Zuspannrichtung gleitend abstützt. From DE 4301 621 A a disc brake with a stationary brake carrier is known, which has two lining shafts for receiving the brake linings, each lining shaft being delimited in both circumferential directions of the brake disc by brake carrier horns, on which a friction lining bearing plate of the respective brake lining is in Application direction slidably supported.
Zur Rückstellung der Bremsbeläge ist eine auf die Bremsbeläge axial in Brems- löserichtung einwirkende Federanordnung vorgesehen, die nach einem Lösen der Bremse ein Einstellen des Lüftspiels zwischen den Bremsbacken und der Bremsscheibe unterstützt. To reset the brake linings, a spring arrangement is provided which acts axially on the brake linings in the brake release direction and supports setting the clearance between the brake shoes and the brake disc after the brake is released.
Diese Federanordnung weist zwei Spreizfedern mit jeweils zwei Federarmen auf, die oberhalb des Reibbelages an der Belagträgerplatte federnd anliegen, wobei die jeweilige Spreizfeder an einem ortsfesten Bauteil fixiert ist, beispielsweise am Bremsträger. This spring arrangement has two expansion springs, each with two spring arms, which rest resiliently above the friction lining on the lining carrier plate, the respective expansion spring being fixed on a stationary component, for example on the brake carrier.
Bei neueren Konstruktionen von Scheibenbremsen ist die Anbindung an den Bremsträger bzw. den äußeren Bremsträgerhörnern aufgrund eines reduzierten Bauraumes nur unter Einbuße der Bremssattelsteifigkeit möglich. In the case of more recent designs of disc brakes, the connection to the brake carrier or the outer brake carrier horns is only possible with a loss of brake caliper rigidity due to a reduced installation space.
Bei einer gattungsgemäßen Scheibenbremse ist an den Belagträgerplatten der Bremsbeläge auf der dem Grund des Belagschachtes des Bremsträgers abgewandten und einer Montageöffnung des Bremssattels zugewandten Seite je weils eine Belaghaltefeder befestigt, an der ein die Montageöffnung in Verschieberichtung der Bremsbeläge die Montageöffnung überspannender Haltebügel anliegt, so dass die Bremsbeläge gegen den Grund des Belagschachtes gedrückt werden. Die Belag haltefedern stehen gleichfalls einer den Anforderungen gerecht werdenden Positionierung der Rückstelleinrichtung entgegen. In the case of a generic disc brake, a lining retaining spring is attached to the lining carrier plates of the brake linings on the side facing away from the base of the lining shaft of the brake carrier and facing an assembly opening of the brake caliper, on which a retaining clip that spans the assembly opening in the direction of displacement of the brake linings rests, so that the Brake pads are pressed against the bottom of the pad well. The pad retaining springs also stand in the way of a positioning of the resetting device that meets the requirements.
Der Erfindung liegt die Aufgabe zugrunde, eine Scheibenbremse und einen Bremsbelag der gattungsgemäßen Art so weiterzuentwickeln, dass mit konstruktiv einfachsten Mitteln die Standzeit der Bremsbeläge erhöht und die Betriebskosten insgesamt gesenkt werden. The invention is based on the object of further developing a disc brake and a brake lining of the generic type in such a way that the service life of the brake linings is increased and the operating costs are reduced overall by means of the simplest construction.
Diese Aufgabe wird durch eine Scheibenbremse mit den Merkmalen des Anspruchs 1 sowie durch einen Bremsbelag mit den Merkmalen des Anspruchs 7 gelöst. This object is achieved by a disc brake with the features of claim 1 and by a brake lining with the features of claim 7.
Gegenüber dem Stand der Technik bietet die erfindungsgemäße Ausbildung sowohl der Scheibenbremse wie auch des Bremsbelages erhebliche Vorteile. Diese ergeben sich u.a. aus der äußerst einfachen Realisierung der Erfindung, da lediglich die Belag haltefeder und/oder die Belagträgerplatte des Bremsbela ges entsprechend konfiguriert werden müssen, was im Wesentlichen kostenneutral erfolgen kann. Damit erfüllt die Erfindung die stete Forderung nach einer Kostenoptim ierung . Compared to the prior art, the design according to the invention offers both the disc brake and the brake lining considerable advantages. These result, among other things, from the extremely simple implementation of the invention, since only the pad retaining spring and / or the pad carrier plate of the brake pad have to be configured accordingly, which can be done essentially at no cost. The invention thus meets the constant demand for cost optimization.
Darüber hinaus wird für die erfindungsgemäße Konfiguration der Rückstellein richtung kein besonders groß dimensionierter Bauraum erforderlich, so dass auch Scheibenbremsen neuerer Generation, die sich durch geringere Bauraumabmaße auszeichnen, mit einer funktionsfähigen Rückstelleinrichtung ausgerüstet werden können. In addition, no particularly large installation space is required for the configuration of the reset device according to the invention, so that even newer generation disc brakes, which are characterized by smaller installation space dimensions, can be equipped with a functional reset device.
Nach einer Weiterbildung der Erfindung ist die Belaghaltefeder mit ihrer der Belagträgerplatte zugewandten Seite parallel zur Bremsscheibenachse angeord net, während die Belagträgerplatte, entsprechend der Erfindung, zum Reibbelag hin als abfallende Schräge ausgebildet ist, wobei die Belagträgerplatte mit einer, bezogen auf den Reibbelag, hinteren Kante an der Belaghaltefeder bereichsweise derart anliegt, dass diese beim Verschieben des Bremsbelages in Richtung der Bremsscheibe gegen die Federkraft verformt wird. Die dabei gespeicherte Energie bewirkt, dass der Bremsbelag beim Lösen der Bremse in seine Nichteingriffsstellung zurückbewegt wird. According to a further development of the invention, the lining retaining spring is arranged with its side facing the lining carrier plate parallel to the brake disk axis, while the lining carrier plate, according to the invention, is designed as a sloping slope towards the friction lining, the lining carrier plate having a rear edge relative to the friction lining rests against the lining retaining spring in areas such that it is deformed against the spring force when the brake lining is moved in the direction of the brake disc. The energy stored in the process causes the brake lining to be moved back into its disengaged position when the brake is released.
Als besonders vorteilhaft stellt sich die erfindungsgemäße Ausbildung sowohl der Belaghaltefeder wie auch der Belagträgerplatte dar, das heißt, beide anei- nander liegenden Seiten sind als Schräge ausgebildet, wobei auch hier beim Verschieben des Bremsbelages zur Bremsscheibe hin die Belaghaltefeder derart gespannt wird, dass beim Lösen der Bremse der Bremsbelag in seine Ausgangsstellung zurückbewegt wird. The design according to the invention of both the pad retaining spring and the pad carrier plate is particularly advantageous, that is, both of them are attached. The sides lying opposite each other are designed as bevels, the lining retaining spring being tensioned when the brake lining is moved towards the brake disc in such a way that the brake lining is moved back into its starting position when the brake is released.
Bevorzugt verläuft die Schräge unter einem Winkel, bezogen auf die Mittelachse der Bremsscheibe, unter einem spitzen Winkel von 10 bis 30°, bevorzugt von 15 bis 25°, d.h., bezogen auf die plane Rückseite der Belagträgerplatte, bevorzugt zwischen 60° und 80°, bevorzugt zwischen 65° und 75°. The bevel preferably runs at an angle, based on the central axis of the brake disc, at an acute angle of 10 to 30 °, preferably 15 to 25 °, that is, based on the flat rear side of the lining carrier plate, preferably between 60 ° and 80 °, preferably between 65 ° and 75 °.
Dabei kann die Schräge der Belaghaltefeder im Kontaktbereich mit der Belagträgerplatte durch partielle Bearbeitung ausgebildet werden, beispielsweise durch Ausstellen einer entsprechend geformten Lasche, einer Rampe oder dergleichen. Auch dies ist im Wesentlichen ohne zusätzliche Fertigungskosten herstellbar. The incline of the pad retaining spring in the contact area with the pad carrier plate can be formed by partial machining, for example by exposing a correspondingly shaped tab, a ramp or the like. This, too, can essentially be produced without additional manufacturing costs.
Weitere vorteilhafte Ausbildungen der Erfindung sind in den Unteransprüchen gekennzeichnet. Further advantageous developments of the invention are characterized in the subclaims.
Ausführungsbeispiele der Erfindung werden nachfolgend anhand der beigefügten Zeichnungen beschrieben. Embodiments of the invention are described below with reference to the accompanying drawings.
Es zeigen: Show it:
Figur 1 eine Scheibenbremse nach dem Stand der Technik in einerFigure 1 shows a disc brake according to the prior art in a
Draufsicht Top view
Figuren 2-4 verschiedene Ausführungsbeispiele der erfindungsgemäßen Scheibenbremse jeweils in einer schematischen Teil- Seitenansicht. Figures 2-4 different embodiments of the disc brake according to the invention, each in a schematic partial side view.
In der Figur 1 ist eine Scheibenbremse nach dem Stand der Technik abgebildet, die insgesamt mit dem Bezugszeichen 1 versehen ist. In FIG. 1, a disk brake according to the prior art is shown, which is provided with the reference numeral 1 as a whole.
Diese Scheibenbremse weist einen eine fahrzeugseitigen Bremsscheibe 9 übergreifenden Bremssattel 2 auf, der auf einem ortsfesten Bremsträger, von dem Bremsträgerhörner 4 erkennbar sind, bezogen auf eine Achse A der Bremsscheibe 9 axial verschiebbar gelagert ist. Im Bremsträger sind beidseitig der Bremsscheibe 9 Bremsbeläge 3 angeordnet, die eine Belagträgerplatte 5 und einen darauf befestigten Reibbelag 6 auf weisen. This disc brake has a brake caliper 2 which overlaps a vehicle-side brake disc 9 and is mounted on a stationary brake carrier, from which brake carrier horns 4 can be seen, in an axially displaceable manner with respect to an axis A of the brake disc 9. In the brake carrier 9 brake pads 3 are arranged on both sides of the brake disc, which have a pad carrier plate 5 and a friction lining 6 attached to it.
Die Bremsbeläge 3 sind jeweils in einem Belagschacht des Bremsträgers positioniert, wobei jeder Belagschacht in Drehrichtung der Bremsscheibe 9 durch die Bremsträgerhörner 4 begrenzt ist. The brake linings 3 are each positioned in a lining well of the brake carrier, each lining well being delimited in the direction of rotation of the brake disc 9 by the brake carrier horns 4.
Zur Vermeidung der Entstehung von Klappergeräuschen sind die Bremsbeläge 3 unter Vorspannung in den Belagschächten gehalten, wozu an einer konvex geformten Seite der jeweiligen Belagträgerplatte 5 eine Belaghaltefeder 7 angeschlossen ist, an der sich ein Belaghaltebügel 8 abstützt, der eine Montageöffnung des Bremssattels 2 überspannt. To avoid rattling noises, the brake linings 3 are held under pretension in the lining wells, for which purpose a lining retaining spring 7 is connected to a convex side of the respective lining carrier plate 5, on which a lining retainer 8 is supported and spans an assembly opening of the brake caliper 2.
In den Figuren 2 bis 4 ist die erfindungsgemäße Ausgestaltung der Scheibenbremse 1 bzw. eines Bremsbelages 3 in unterschiedlichen Ausführungsvarianten wiedergegeben, wobei die zeichnerische Abbildung in schematischer Form einer seitlichen Teilansicht vorliegt. In Figures 2 to 4, the embodiment of the disc brake 1 or a brake pad 3 according to the invention is shown in different design variants, the graphic illustration being in schematic form of a partial side view.
Die Figur 2 zeigt dabei die Belaghaltefeder 7 mit einer dem Bremsbelag 3 zugewandten, achsparallel zur Drehachse A verlaufenden Seite, während die Belagträgerplatte 5 auf der der Belaghaltefeder 7 zugewandten Seite als Schräge 11 ausgebildet ist, die in Richtung des Reibbelages 6 geneigt verläuft. FIG. 2 shows the lining retaining spring 7 with a side facing the brake lining 3 and running axially parallel to the axis of rotation A, while the lining carrier plate 5 on the side facing the lining retaining spring 7 is designed as a bevel 11 which is inclined in the direction of the friction lining 6.
Da die Belaghaltefeder 7 durch den Belaghaltebügel 8 niedergedrückt ist, steht sie unter Federspannung, wobei in der Figur 2 der Bremsbelag 3 in gelöster Stellung wiedergegeben ist. Since the lining retaining spring 7 is pressed down by the lining retaining clip 8, it is under spring tension, the brake lining 3 being shown in the released position in FIG.
Bei einem Verfahren in Richtung der Bremsscheibe 9 wird die Belaghaltefeder 7 gegen die Schräge 11 gedrückt, wobei sie unter eine derartige Vorspannung gebracht ist, dass beim anschließenden Lösen durch die Federkräfte der Bremsbelag 3 in eine Lösestellung verschoben wird. When moving in the direction of the brake disk 9, the pad retaining spring 7 is pressed against the bevel 11, being brought under such pretension that the brake pad 3 is shifted into a release position during the subsequent release by the spring forces.
In der Figur 3 ist die Belaghaltefeder 7 entsprechend der Neigung der Schräge 11 der Belagträgerplatte 5 verdreht, so dass nach einer Relativbewegung des Bremsbelages 3 bei einer Bremsung die Belaghaltefeder 7 gespannt wird und nach einem Lösen der Bremse durch die wirksamen Federkräfte der Bremsbe lag 3 in eine Losstellung zurückgeführt wird. In FIG. 3, the lining retaining spring 7 is rotated in accordance with the inclination of the incline 11 of the lining carrier plate 5, so that after a relative movement of the brake lining 3 during braking, the lining retaining spring 7 is tensioned and after releasing the brake by the effective spring forces of the Bremsbe lay 3 is returned to a loose position.
Entsprechend der Schräge 11 ist bei dem in der Figur 4 gezeigten Ausfüh- rungsbeispiel an der Belaghaltefeder 7 eine Lasche 10 vorgesehen, die dieIn the exemplary embodiment shown in FIG. 4, a tab 10 is provided on the lining retaining spring 7, corresponding to the incline 11, which the
Schräge 11 kontaktiert und die Belaghaltefeder 7 im zuvor beschriebenen Sinn verformt. Contacted bevel 11 and the pad retaining spring 7 is deformed in the sense described above.
Dabei wird der Bremsbelag 3 relativ zur Belaghaltefeder 7 parallel zur Achse A der Bremsscheibe 9 verschiebbar gehalten. In this case, the brake lining 3 is held so that it can be displaced relative to the lining retaining spring 7, parallel to the axis A of the brake disc 9.
Bevorzugt verläuft die Schräge unter einem Winkel a, bezogen auf die Mittelachse der Bremsscheibe, unter einem spitzen Winkel von 10 bis 30°, bevorzugt von 15 bis 25°, d.h., bezogen auf die plane Rückseite der Belagträgerplatte, bevorzugt zwischen 60° und 80°, bevorzugt zwischen 65° und 75°. The slope preferably runs at an angle α, based on the central axis of the brake disc, at an acute angle of 10 to 30 °, preferably 15 to 25 °, ie, based on the flat rear side of the lining carrier plate, preferably between 60 ° and 80 ° , preferably between 65 ° and 75 °.
Bezugszeichenliste List of reference symbols
1 Scheibenbremse1 disc brake
2 Bremssattel 3 Bremsbelag 2 brake caliper 3 brake pad
4 Bremsträgerhörner4 brake carrier horns
5 Belagträgerplatte5 backing plate
6 Reibbelag 6 friction lining
7 Belaghaltefeder 8 Belaghaltebügel7 Pad retainer spring 8 Pad retainer
9 Bremsscheibe 9 brake disc
10 Lasche 10 tab
11 Schräge 11 slope
A Achse a Winkel A axis a angle

Claims

Ansprüche Expectations
1. Scheibenbremse (1) für ein Nutzfahrzeug, mit einem eine Bremsscheibe (9) übergreifenden, als Schiebesattel ausgebildeten Bremssattel (2), zwei darin angeordneten, in Richtung der Bremsscheibe (9) gegensinnig bewegbaren, jeweils eine Belagträgerplatte (5) und einen darauf befestigten Reibbelag (6) aufweisende Bremsbeläge (3), die jeweils unter Vorspannung mittels einer Belaghaltefeder (7) in einen in Drehrichtung der Bremsscheibe (9) durch Bremsträgerhörner (4) begrenzten Belagschacht eines fahrzeugseitigen Bremsträgers angeordnet sind, sowie mit Rückstelleinrichtungen, mit denen der Bremsbelag (3) nach einem bremsbedingten Verschieben und Lösen der Bremse rückführbar ist, dadurch gekennzeichnet, dass zumindest eine der einander zugewandten und sich kontaktierenden Berei che der Belagträgerplatte (5) und/oder der Belaghaltefeder (7) als zum Reib belag (6) hin abfallende Schräge (11) ausgebildet ist. 1. Disc brake (1) for a commercial vehicle, with a brake disc (9) overlapping, designed as a sliding caliper brake caliper (2), two arranged therein, movable in opposite directions in the direction of the brake disc (9), each with a lining carrier plate (5) and one on it Fastened friction lining (6) having brake linings (3) which are each arranged under pretension by means of a lining retaining spring (7) in a lining well of a vehicle-side brake carrier limited in the direction of rotation of the brake disc (9) by brake carrier horns (4), as well as with reset devices with which the Brake lining (3) is retractable after a braking-related shifting and releasing of the brake, characterized in that at least one of the facing and contacting areas of the lining carrier plate (5) and / or the lining retaining spring (7) as the friction lining (6) sloping slope (11) is formed.
2. Scheibenbremse (1) nach Anspruch 1, dadurch gekennzeichnet, dass die Belaghaltefeder (7) und die Belagträgerplatte (5) relativ zueinander in Verschieberichtung des Bremsbelages (3) verschiebbar sind. 2. Disc brake (1) according to claim 1, characterized in that the lining retaining spring (7) and the lining carrier plate (5) are displaceable relative to one another in the displacement direction of the brake lining (3).
3. Scheibenbremse (1) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Belaghaltefeder (7) im Kontaktbereich mit der Belagträgerplatte (5) unter Ausbildung einer gleich verlaufenden Schräge zur Schräge (11) der Belagträgerplatte (5) verdreht ist. 3. Disc brake (1) according to claim 1 or 2, characterized in that the lining retaining spring (7) is rotated in the contact area with the lining carrier plate (5) to form a bevel running the same to the incline (11) of the lining carrier plate (5).
4. Scheibenbremse (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Schräge (11) der Belaghaltefeder (7) durch eine angeformte Lasche (10) oder Rampe gebildet ist. 4. Disc brake (1) according to one of the preceding claims, characterized in that the incline (11) of the pad retaining spring (7) is formed by an integrally formed tab (10) or ramp.
5. Scheibenbremse (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Schräge (11), bezogen auf die plane Rückseite der Belagträgerplatte (5), unter einem Winkel (a) zwischen 60° bis 80° verläuft. 5. Disc brake (1) according to one of the preceding claims, characterized in that the incline (11), based on the flat rear side of the lining carrier plate (5), extends at an angle (a) between 60 ° to 80 °.
6. Scheibenbremse (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Schräge (11), bezogen auf die plane Rückseite der Belagträgerplatte (5), zwischen einem Winkel (a) von 65° bis 75 verläuft. 6. Disc brake (1) according to one of the preceding claims, characterized in that the bevel (11) extends between an angle (a) of 65 ° to 75 ° with respect to the flat rear side of the lining carrier plate (5).
7. Bremsbelag für eine Scheibenbremse eines Nutzfahrzeuges, mit einer Be lagträgerplatte (5) und einem darauf befestigen Reibbelag (6), wobei die Be lagträgerplatte (5) einseitig konvex gekrümmt ist, dadurch gekennzeichnet, dass die konvex gekrümmte Seite der Belagträgerplatte (5), zumindest bereichs weise, als zum Reibbelag (6) hin abfallende Schräge (11) ausgebildet ist. 7. Brake pad for a disc brake of a commercial vehicle, with a Be lag carrier plate (5) and a friction lining fastened thereon (6), wherein the Be lag carrier plate (5) is convexly curved on one side, characterized in that the convexly curved side of the lining carrier plate (5) is formed, at least in some areas, as a slope (11) sloping towards the friction lining (6).
PCT/EP2020/078682 2019-10-24 2020-10-13 Disc brake for a utility vehicle, and brake lining for a disc brake WO2021078576A1 (en)

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DE102019128748.0 2019-10-24

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4301621A1 (en) * 1992-01-28 1993-08-26 Teves Gmbh Alfred Floating caliper disc brake
WO2016202778A1 (en) * 2015-06-15 2016-12-22 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Disk brake for a utility vehicle and brake pad set

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Publication number Priority date Publication date Assignee Title
US4410069A (en) * 1981-06-29 1983-10-18 The Bendix Corporation Disc brake
JP4496617B2 (en) * 2000-07-26 2010-07-07 株式会社アドヴィックス Pad holding member for disc brake
JP2008064148A (en) * 2006-09-05 2008-03-21 Advics:Kk Pad set for disk brake
CN102011816B (en) * 2010-12-01 2012-08-29 东风汽车有限公司 Disc brake with friction block return structure
DE102014019618A1 (en) * 2014-12-29 2016-06-30 Wabco Europe Bvba disc brake

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4301621A1 (en) * 1992-01-28 1993-08-26 Teves Gmbh Alfred Floating caliper disc brake
WO2016202778A1 (en) * 2015-06-15 2016-12-22 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Disk brake for a utility vehicle and brake pad set

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