WO2023062037A1 - Frein à disque et ensemble d'aspiration - Google Patents

Frein à disque et ensemble d'aspiration Download PDF

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Publication number
WO2023062037A1
WO2023062037A1 PCT/EP2022/078307 EP2022078307W WO2023062037A1 WO 2023062037 A1 WO2023062037 A1 WO 2023062037A1 EP 2022078307 W EP2022078307 W EP 2022078307W WO 2023062037 A1 WO2023062037 A1 WO 2023062037A1
Authority
WO
WIPO (PCT)
Prior art keywords
brake
disc
suction
arrangements
disc brake
Prior art date
Application number
PCT/EP2022/078307
Other languages
German (de)
English (en)
Inventor
Abdelaziz Rguichi
Ralf Weber
Andreas Buch
Alexander Werth
Rudolf Fischer
Zoltan Riba
Erkan Akbalik
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 WO2023062037A1 publication Critical patent/WO2023062037A1/fr

Links

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
    • F16D65/00—Parts or details
    • F16D65/0031—Devices for retaining friction material debris, e.g. dust collectors or filters
    • 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
    • F16D55/2255—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 pivoted

Definitions

  • the invention relates to a disc brake according to the preamble of claim 1 and a suction arrangement for such a disc brake.
  • WO 2008/083884 A1 discloses the use of such a suction and separation system which has a fine dust filter on the one hand for the brake disc of a disc brake and on the other hand a fan and which are both positioned in a wheel rim, with the fine dust filter being hermetically sealed from the environment on the rim is held.
  • EP 2 585 730 B1 discloses a generic disk brake with a suction and separation system that is also suitable for use in commercial vehicles.
  • the disc brake has a brake caliper that overlaps a brake disc, in which brake pads are arranged, which are provided with friction linings and can be pressed with their friction lining on both sides of the friction ring surfaces of the brake disc, with the friction rings outside the overlapping area of the friction linings having a housing that is fixed relative to the brake caliper are covered, which is connected to a suction device, wherein between the Housing and the suction device is provided a dust removal device.
  • This design has proven itself well, but should be further optimized.
  • the surroundings of the vehicle primarily the conditions in the wheel housing and inside the rim, can ensure diffuse turbulence of the resulting brake dust due to the relative wind.
  • the cover plates can hardly be designed in such a way that the brake is completely encapsulated. Because further encapsulation of the brake could result in corresponding thermal problems in the friction pairing.
  • the invention is based on the object of further developing a disc brake of the generic type in such a way that escape of the brake dust into the environment is largely prevented with simple design means.
  • the invention also has the object of creating a suction arrangement which is particularly well suited for such a disc brake.
  • a disc brake is created with a brake caliper that overlaps a brake disc, in which brake pads are arranged, each with a friction lining and a backing plate, which can be pressed with their friction lining on both sides of the friction ring surfaces of the brake disc, and with a suction device for sucking off at Braking resulting abrasion, wherein the suction arrangement has two suction pipe arrangements assigned to the respective brake layers and a cover connecting the suction pipe arrangements for at least partially covering the brake disk, which can be arranged above the brake disk.
  • a particularly high proportion of the abrasion is absorbed when the two intake manifold arrangements are designed in the manner of a ring either entirely or essentially circumferentially, with the annular intake manifold arrangements being oriented essentially parallel to the friction surfaces of the brake disk in the assembled state. Because in this way abrasion can be sucked off virtually on the entire peripheral edge of the brake pads.
  • the invention is particularly advantageous for a disc brake which, in addition to the brake caliper, also has a brake carrier which can have one or two pad shafts for inserting the brake pads
  • the invention can be further optimized in that the ring-like suction pipe arrangements are each placed around the respective friction linings of the two brake linings in the assembled state.
  • the ring-like suction pipe arrangements are each provided with one or more guide and support elements.
  • the guide and support elements each have one or more sections, which are each arranged between the respective back plate of the respective brake pad and the brake carrier.
  • the guide and support sections at least help prevent the brake dust from leaving the area of the disc brake.
  • Their support function refers to the support of the brake pads in the pad shaft, where the suction arrangement is also determined by these elements.
  • the guide and support plates also create a unit that can be replaced when changing the pads.
  • the guide and support plates therefore also serve to reduce/prevent corrosion caused by friction between the carrier horn and the pad backing plate. This prevents a layer of corrosion from forming between the carrier horn and the pad backing plate (particularly due to the few brake applications due to e-mobility) which can lead to pad jamming.
  • the cover has a suction connection as an interface for connecting a suction and separating device external to the disc brake and if the cover also has a connecting tube element connecting the two suction pipe arrangements and the suction connection.
  • the suction tube arrangements arranged on the two brake pads have one or more suction openings. It can then be advantageous if the suction pipe arrangements arranged on the two brake pads each have the suction openings in the direction facing the brake disc and/or in the direction facing away from the brake disc.
  • fastening means in particular fastening clips, are provided with which the suction tube arrangement is fastened to the carrier.
  • the intake manifold arrangement is ideally connected to the cover plate in such a way that this connection is free of leakage (e.g. welded).
  • the invention also creates a suction device for sucking off abrasion produced during braking, for a disc brake, in particular for a disc brake according to one or more of the claims relating thereto, wherein the suction device has two suction pipe arrangements assigned to the respective brake pads and a cover connecting the suction pipe arrangements to at least partially cover the brake disc.
  • This suction arrangement which can be connected to a suction system arranged outside of the disc brake, in particular a suction and separation system with a fan, or is in ferry operation, enables a large proportion of the abrasion produced during braking to be suctioned off with simple design means.
  • the two suction pipe arrangements are ring-like in the form of a ring that is completely closed or essentially circumferential, with the ring-like suction pipe arrangements being orientable essentially parallel to the friction surfaces of the brake disc when installed.
  • the suction arrangement is preferably designed to be exchangeable on the disc brake, so that it can be exchanged for a new, undamaged suction arrangement after it has been used for a long time. It is then advantageous if at least the cover and the two ring-like suction tube arrangements form a pre-assembled, exchangeable unit of the disc brake, which can also be exchanged when the pads are changed, for example.
  • FIG. 3 in a) and b) two different perspective views of a suction arrangement of the disc brake from FIG. 1 a) and b); in c) an exploded view of the suction arrangement from a) and b); and in d) the suction arrangement from a) without a cover;
  • FIG. 5 shows a second disc brake according to the invention in a perspective view
  • Fig. 6 shows a suction arrangement of the disc brake from Fig. 5).
  • the brake caliper 3 is movably arranged here, in particular displaceably on a brake carrier 4, which can be fastened to a leg of a vehicle axle (not shown here).
  • the brake carrier 4 is optional.
  • the caliper 3 can be designed within the scope of the invention, for example, as a pivoting caliper, sliding caliper or fixed caliper (without a brake carrier).
  • Brake pads 51 , 52 are arranged on both sides of the brake disc 1 in the brake caliper 3 and possibly in the brake carrier 4 . These brake pads each have a backing plate 511, 521 and a friction lining 512, 522 (FIGS. 3, 4).
  • the brake caliper 3 here has a central opening 6 above the brake disc 1, through which the brake pads 51, 52 can be installed and removed, in particular in order to exchange them when the pads are changed.
  • the brake carrier 4 can be configured on one side or preferably like a frame. In the latter case, it surrounds the upper edge of the brake disc like a frame.
  • the brake carrier 4 carries the brake caliper 3.
  • the brake caliper 3 is preferably arranged on the brake carrier 4 in a displaceable manner.
  • the brake carrier 4 can have a lining shaft 41 , 42 for brake linings 51 , 52 on both sides of the brake disc.
  • These pad shafts 41, 42 are in the circumferential direction of brake carrier horns 411, 412; 421, 422 and bounded at the bottom by a strut 413, 423.
  • the brake carrier 4 can be attached to the vehicle in an axle area on a vehicle (FIG. 1a, FIG. 1b; FIG. 2a, FIG. 2b).
  • the brake pads 51 , 52 are inserted into the pad shafts 41 , 42 in the brake carrier 4 on both sides of the brake disc 1 .
  • the brake pads 51 , 52 are inserted here on both sides of the brake disc 1 in a corresponding manner in the brake pad shafts 41 , 42 .
  • the brake disc 1 has an axis of rotation D. This is aligned parallel to an X-axis in a Cartesian coordinate system.
  • the friction ring surfaces 2 of the ring-shaped brake disc 1 extend parallel to or in a Y/Z plane. The Y-direction is tangential to the circumferential direction (see Fig. 2a).
  • the brake pads 51, 52 are held directly or indirectly via a spring 513, 523 in the pad shafts 41, 42 of the brake carrier 4 with the aid of a hold-down bracket 8, which extends across the opening 6 of the brake caliper 3 (Fig. 1a)
  • the brake linings 51, 52 can each be pressed with their friction lining 512, 522 on both sides against the friction ring surfaces 2 (FIGS. 1a, b) of the preferably internally ventilated brake disk 1.
  • an actuator (not shown here) is assigned to the disk brake. This can be an electric motor or a pneumatic or a hydraulic and/or a spring actuator.
  • This actuator can act on one or both friction linings 51 , 52 via an application mechanism—here inside the brake caliper 3 —in order to press them against the brake disk 1 .
  • an application mechanism here inside the brake caliper 3
  • the clamping mechanism also includes an adjustment device for adjusting the clearance, which changes during operation as a result of pad and disc wear.
  • This abrasion is sucked off. In this way, this disc brake also meets the requirements for environmental protection in terms of abrasion.
  • a suction device 7 is formed on the disc brake.
  • This suction arrangement 7 preferably has a cover 71 and a suction tube arrangement 721, 722 (FIGS. 2a, 2b, 2c, 2d) for each brake pad.
  • the cover 71 and the two intake manifold arrangements 721, 722 can be put together to form a pre-assembled unit, for example welded together, which can be assembled as a whole during initial assembly or when changing the pads and which can also be dismantled as a whole, e.g. when changing the pads, in order to replace it with a exchange new, unpolluted ones.
  • the suction tube arrangements 721, 722 form - preferably peripherally closed and essentially running in one plane - suction rings, the ring contour of which can be modeled approximately on the outer contour of the brake linings 51, 52, in particular the friction linings 512, 522, but can be somewhat larger than this , so that the friction linings can swap through them.
  • the ring-like suction tube arrangements are essentially parallel to the friction surfaces 2 of the brake disc 1 oriented (see Fig. 2d and 3a, 3b, 3c, 3d; 4a).
  • the intake manifold arrangements 721 , 722 can preferably each be inserted or also inserted axially in the area of a respective gap S1 , S2 between the respective brake lining or the respective friction lining 511 , 521 and the respective friction ring surfaces 2 . They can advantageously be dimensioned in such a way that when braking, the friction linings 512, 522 can be moved axially through them. When braking, the axial extent of the gaps S1, S2 is zero in each case, so that braking begins, which causes abrasion.
  • the intake manifold assemblies 721, 722 may include one or more intake ports 7211, 7221 (see Figure 3c).
  • the suction openings 7211, 7221 can be distributed directly on the outer circumference of the suction pipe arrangements forming the suction rings. In addition, they can preferably be oriented in the direction of the brake disk 1 in the assembled state. According to a preferred embodiment, the suction openings 7211, 7221 can be designed as windows in the wall of the suction rings.
  • At least the area between the four carrier horns 411, 412, 421, 422 is essentially covered by a cover 71 when the suction device 7 is in the installed state, i.e. more than 70%, in particular more than 90%.
  • the cover 71 is preferably designed as a sheet metal element (FIG. 2a).
  • the cover 71 is preferably held down by the hold-down clip 8, which is located above or radially outside (relative to the axis of rotation x of the brake disc 2) of the cover 71 and the brake pads 51, 52.
  • the hold-down bracket 8 and the cover 71 can be connected to one another, for example screwed with a screw 81 .
  • the cover 71 can be removed in this way in order to be able to change the brake pads 51 , 52 .
  • the cover 71 has at least one opening or window that passes through the cover.
  • the window can be provided with an exhaust port 712 .
  • a connection element such as a connection pipe of a suction and preferably separating system configured externally to the disk brake can be connected to this suction connection 712 (not shown).
  • the vehicle that is equipped with the disc brake is provided with at least one suction and possibly separation system (not shown here), which can have a suction fan or the like, not shown here, with which the abrasion is guided to a dust removal device.
  • This suction and, if necessary, separation system can also have one or more separation and/or filter stages.
  • the exiting abrasion-free air can be discharged into the environment, for example, via a silencer arranged downstream of the suction fan. The abrasion is sucked off and disposed of separately.
  • the extraction and separation system outside the disc brake on the vehicle can be designed or used for one or more of the disc brakes on the vehicle.
  • EP 2 585 730 B1 discloses components of such a system.
  • the abrasion is extracted directly at the point of origin, i.e. on the individual disc brakes of the vehicle in which the disc brake is installed, by means of the extraction arrangement 7 integrated into the disc brake, preferably when changing the pads, which is designed to remove the abrasion relatively directly at the contact surface between the brake disc 1 and the respective friction lining 511 , 521 .
  • the cover 71 of the suction arrangement 7 is preferably designed as a cover plate. This can have an elongated, approximately rectangular shape in plan view, which corresponds to the geometry of the area between the free ends of the carrier horns 411, 412; 421, 422 may correspond.
  • the cover 71 can be designed as a cover plate.
  • the cover plate is designed in one piece here. However, it can also be designed in several pieces.
  • the cover 71 may have the suction port 712 and may have a connecting tube member 713 (Figure 3a).
  • This connecting tube element 713 can form a type of T-piece with regard to its fluid flow function.
  • the suction connection 712 with the two suction tube arrangements 721, 722 connect.
  • air and particles sucked in through the suction openings 7211, 7221 are sucked out through the suction pipe assemblies 721, 722, the connecting pipe element 713 and the suction port 712 and can thus reach the suction and separation system outside the disc brake, which is connected to the suction ports 712 of the individual disc brakes of the vehicle.
  • the suction openings can be placed very close to the friction ring surfaces 2 of the brake disc 1, ie very close to the point at which the abrasion occurs.
  • Substantially radially running sections of the suction pipe arrangements can be close to the place where the abrasion occurs in gaps S1, S2 between the brake carrier horns 411, 412; 421, 422 and the brake disk.
  • These guide and support elements 7311, 7312; 7321, 7322 can be connected, in particular welded, to the suction tube arrangements 721, 722 and/or the cover 71.
  • the guide and support elements 7311, 7312; 7321, 7322 can be designed as angle plates. Provision can then also be made for these angle plates to grip around corner regions of the brake pads 51, 52 in the mounted state and to rest in the pad shafts of the brake carrier on its support surfaces. The brake pads are then supported only on the guide and support elements 7311, 7312; 7321 , 7322 onwards.
  • the cover 71 and possibly the guide and support elements 7311, 7312; 7321, 7322, the gussets in particular help prevent debris from escaping uncontrolled from the disc brake, which increases the effectiveness of the suction.
  • the guide and support elements 7311, 7312; 7321 , 7322 can also form stable intermediate elements for supporting the brake pads 51 , 52 in the brake carrier 3 .
  • they can be made of steel.
  • suction arrangement 7 can also be changed when the pads are changed, this suction of the abraded material is secured in a particularly advantageous manner by elements that are new or cleaned in this respect, even after the pads have been changed.
  • the respective intake manifold arrangement 721, 722 is preferably designed in such a way that it can completely or partially surround the respective friction lining 512, 522 of the respective brake lining 51, 52 in a frame-like/ring-like manner (FIGS. 4a, 4b).
  • the respective suction pipe arrangement 513, 523 of the suction arrangement 7 can each have a contour which is or corresponds to the contour of the peripheral edge around the friction lining 512, 522.
  • the respective suction pipe arrangement 721, 722 thus preferably runs all the way around the respective friction lining 512, 522 at a distance of a few mm from the friction lining 512, 522.
  • the two ends of the circumferential suction pipe arrangements 721, 722 can then end in the connecting pipe element 713 or be attached to it. In this way the two suction rings are formed. In this way, the brake dust can be extracted and sucked off directly at the point of origin.
  • the respective intake manifold arrangement 721 , 722 can be moved in each case up to or close to the friction surface 2 of the respective friction ring, which faces the brake disc 1 .
  • Tubular elements of the intake arrangement can be plugged in without a gap using a press fit or, if necessary, welded on.
  • suction connection 712 can be designed in the manner of a commercially available hose connection, e.g. in the manner of a plug-in connection or coupling, etc.
  • FIGS. 5 and 6 shows a further variant and implicitly a manufacturing method of the circumferential suction tube arrangements 721, 722 designed as rings.
  • these can—according to one option together with the cover 71—be made of one or more metal sheets.
  • These can have one or more suction openings 211, 7222, in particular also thin gaps as a suction opening to the contact surface between the brake disc and the brake pad 51, 52, through which the brake dust is suctioned off.
  • the sheet can be integrally formed or there are several sheets provided by means Connectors can be sealed at the corners (not shown).

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

Abstract

L'invention concerne un frein à disque comprenant un étrier de frein (3) qui chevauche un disque de frein (1) et dans lequel sont disposées des plaquettes de frein (51, 52) qui sont pourvues chacune d'une garniture de friction (512, 522) et d'une plaque dorsale (511, 521) et qui peuvent être appuyées avec leur garniture de friction (512, 522) contre des surfaces annulaires de friction (2) de part et d'autre du disque de frein (1). Ce frein à disque comprend par ailleurs un système d'aspiration destiné à aspirer les résidus d'abrasion produits lors de freinages. L'invention est caractérisée en ce que le système d'aspiration comprend deux ensembles tuyaux d'aspiration (721, 722), associés chacun à une plaquette de frein (51, 52) respective, et en ce qu'un élément de recouvrement (71) reliant les ensembles tuyaux d'aspiration (721, 722) recouvre au moins partiellement le disque de frein.
PCT/EP2022/078307 2021-10-15 2022-10-11 Frein à disque et ensemble d'aspiration WO2023062037A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102021126787.0 2021-10-15
DE102021126787.0A DE102021126787A1 (de) 2021-10-15 2021-10-15 Scheibenbremse und Absauganordnung

Publications (1)

Publication Number Publication Date
WO2023062037A1 true WO2023062037A1 (fr) 2023-04-20

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PCT/EP2022/078307 WO2023062037A1 (fr) 2021-10-15 2022-10-11 Frein à disque et ensemble d'aspiration

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WO (1) WO2023062037A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022123298A1 (de) 2022-09-13 2024-03-14 Zf Cv Systems Europe Bv Scheibenbremsenanordnung für ein Nutzfahrzeug und Nutzfahrzeug mit einer solchen Scheibenbremsenanordnung

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29506916U1 (de) * 1995-04-25 1995-06-22 Djukic Radoslav Scheibenbremse
WO2008083884A1 (fr) 2007-01-08 2008-07-17 Mann+Hummel Gmbh Dispositif pour recueillir la poussière de frein pour véhicules automobiles
US20100096226A1 (en) 2008-10-20 2010-04-22 Joseph Gelb Disc brake assembly
GB2515063A (en) * 2012-03-02 2014-12-17 Trevor Michael Mennie Brake system
EP2585730B1 (fr) 2010-06-24 2016-01-13 KNORR-BREMSE Systeme für Nutzfahrzeuge GmbH Frein à disque
EP3369959A1 (fr) * 2015-10-30 2018-09-05 Akebono Brake Industry Co., Ltd. Dispositif de frein à disque

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4240873C2 (de) 1992-12-04 2001-03-22 Continental Teves Ag & Co Ohg Bremsstaubrückhaltevorrichtung für Kraftfahrzeuge
GB2492858C2 (en) 2011-12-06 2014-12-10 Trevor Michael Mennie Brake system
FR3046644B1 (fr) 2016-01-13 2019-04-12 Tallano Technologie Ensemble de frein a captation de particules avec deflecteur
DE102020104719A1 (de) 2020-02-24 2021-08-26 Mann+Hummel Gmbh Filtergehäuse eines Bremsstaubpartikelfilters für eine Bremsscheibenanordnung und Bausatz für ein Filtergehäuse eines Bremsstaubpartikelfilters

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29506916U1 (de) * 1995-04-25 1995-06-22 Djukic Radoslav Scheibenbremse
WO2008083884A1 (fr) 2007-01-08 2008-07-17 Mann+Hummel Gmbh Dispositif pour recueillir la poussière de frein pour véhicules automobiles
US20100096226A1 (en) 2008-10-20 2010-04-22 Joseph Gelb Disc brake assembly
EP2585730B1 (fr) 2010-06-24 2016-01-13 KNORR-BREMSE Systeme für Nutzfahrzeuge GmbH Frein à disque
GB2515063A (en) * 2012-03-02 2014-12-17 Trevor Michael Mennie Brake system
EP3369959A1 (fr) * 2015-10-30 2018-09-05 Akebono Brake Industry Co., Ltd. Dispositif de frein à disque

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