EP4587729A1 - Frein à disque pour véhicule utilitaire - Google Patents

Frein à disque pour véhicule utilitaire

Info

Publication number
EP4587729A1
EP4587729A1 EP23764275.6A EP23764275A EP4587729A1 EP 4587729 A1 EP4587729 A1 EP 4587729A1 EP 23764275 A EP23764275 A EP 23764275A EP 4587729 A1 EP4587729 A1 EP 4587729A1
Authority
EP
European Patent Office
Prior art keywords
brake
disc
lining carrier
return spring
end regions
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
EP23764275.6A
Other languages
German (de)
English (en)
Inventor
Martin PLEINTINGER
Maximilian MÜNSTERER
David Abebe
Bernhard Paukner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH
Original Assignee
Knorr Bremse Systeme fuer 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 fuer Nutzfahrzeuge GmbH filed Critical Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH
Publication of EP4587729A1 publication Critical patent/EP4587729A1/fr
Pending legal-status Critical Current

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
    • 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
    • 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
    • F16D65/02—Braking members; Mounting thereof
    • F16D65/04—Bands, shoes or pads; Pivots or supporting members therefor
    • F16D65/092—Bands, shoes or pads; Pivots or supporting members therefor for axially-engaging brakes, e.g. disc brakes
    • F16D65/095—Pivots or supporting members therefor
    • F16D65/097—Resilient means interposed between pads and supporting members or other brake parts
    • F16D65/0973—Resilient means interposed between pads and supporting members or other brake parts not subjected to brake forces
    • F16D65/0974—Resilient 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
    • F16D65/0975—Springs made from wire
    • 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
    • F16D65/005—Components of axially engaging brakes not otherwise provided for
    • F16D65/0056—Brake supports
    • 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
    • F16D65/005—Components of axially engaging brakes not otherwise provided for
    • F16D65/0068—Brake calipers
    • 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
    • F16D65/02—Braking members; Mounting thereof
    • F16D65/04—Bands, shoes or pads; Pivots or supporting members therefor
    • F16D65/092—Bands, shoes or pads; Pivots or supporting members therefor for axially-engaging brakes, e.g. disc brakes
    • F16D65/095—Pivots or supporting members therefor
    • F16D65/097—Resilient means interposed between pads and supporting members or other brake parts
    • 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
    • F16D65/02—Braking members; Mounting thereof
    • F16D65/12—Discs; Drums for disc brakes
    • F16D65/125—Discs; Drums for disc brakes characterised by the material used for the disc body
    • 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
    • F16D2055/0004—Parts or details of disc brakes
    • F16D2055/0008—Brake supports
    • 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
    • F16D2055/0004—Parts or details of disc brakes
    • F16D2055/0016—Brake calipers
    • F16D2055/0029—Retraction devices
    • 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
    • F16D2127/00—Auxiliary mechanisms
    • F16D2127/02—Release mechanisms
    • 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
    • F16D2200/00—Materials; Production methods therefor
    • F16D2200/0004—Materials; Production methods therefor metallic
    • F16D2200/0008—Ferro
    • F16D2200/0021—Steel

Definitions

  • the present invention relates to a disc brake for a commercial vehicle according to the preamble of claim 1.
  • the brake caliper After releasing the brake, in the known disc brake the brake caliper remains in this position in which the brake pads, or at least the reaction-side brake pad, rest against the brake disc without pressure, but in a grinding manner.
  • the resulting residual grinding moments of the brake pads during ferry operation have a disadvantageous effect as they lead to increased fuel consumption and premature wear of the components involved, namely the brake disc and the brake pads.
  • the brake pads are also loosened by the ferry company. However, this is not always sufficient to effectively prevent the residual grinding torques mentioned.
  • the object of the present invention is to further develop a disc brake of the generic type in such a way that the return springs for active return of the brake disc resting on the brake disc after a braking process Brake pads can be further improved in terms of their securing to the brake pads and in terms of extended functionality.
  • the disc brake according to the invention for a commercial vehicle has a brake disc, a brake caliper which extends over the brake disc and is designed as a sliding caliper, a stationary brake carrier to which the brake caliper is attached and a lining carrier plate and brake linings having a friction lining attached thereto, which are arranged on both sides of the brake disc in the brake caliper and can be pressed on opposite sides of the brake disc.
  • the brake caliper has a central opening above the brake disc, which is spanned by a pad retaining bracket to secure the brake pads in a pad shaft of the brake carrier.
  • An action-side brake pad can be pressed against the brake disc by means of an application device via at least one brake stamp and a reaction-side brake pad can be pressed against the brake disc via the brake caliper.
  • the disc brake also has a restoring device with at least one restoring spring acting on the lining carrier plates of the brake linings for actively returning the brake linings resting on the brake disc after a braking process.
  • this at least one return spring are designed in such a way that they act on the lining carrier plates of the brake linings while exerting a torque that is axial and/or tangential to the axis of rotation of the brake disc.
  • the restoring device has two such restoring springs.
  • the return springs are preferably arranged in an area near the side edges of the lining carrier plates.
  • the at least one return spring has a base section, two legs that are angled relative to the base section and end regions that are bent relative to the legs.
  • a first end region projects into a receptacle of the lining carrier plate of the action-side brake pad and a second end region of the return spring protrudes into a receptacle of the lining carrier plate of the reaction-side brake pad.
  • the longitudinal axes of the end regions are aligned at an acute angle to the longitudinal axes of the receptacles of the lining carrier plates.
  • the acute-angled alignment of the longitudinal axes of the end regions of the restoring spring relative to the longitudinal axes of the receptacles of the lining carrier plates enables a defined point contact point between the end regions of the restoring spring and the receptacles of the lining carrier plates, whereby the coefficient of friction between the adjacent components increases in an advantageous manner compared to a parallel arrangement .
  • the receptacles in the lining carrier plates are open to a radially outer end edge of the lining carrier plates.
  • the receptacles in the lining carrier plates have an angle that extends to the longitudinal axis of the receptacles Recess into which the end regions of the return spring are bent.
  • oblique wear of the friction linings of the brake pads can be reduced by appropriately inclining the radially upper or lower edge of the brake pad away from the brake disc.
  • an inner wall delimiting the receptacles in the lining carrier plates is provided with at least one groove.
  • Figure 1 is an isometric view of an embodiment variant of a disc brake according to the invention with ends of two return springs acting on brake pad support plates,
  • FIG. 6 shows a representation corresponding to FIG. 4, with the end regions of the return spring running towards one another when viewed in the direction of the axis of rotation of the brake disc
  • 7 shows a sectional view through the action-side brake pad to show a tangentially inclined end region of one of the return springs in a receptacle of the pad carrier plate
  • the action-side or application-side brake pad 5 first contacts the brake disc 2.
  • the brake caliper 3 is moved in opposite directions due to the reaction forces that occur, taking the reaction-side brake pad 6 with it, until it is also on the Brake disc 2 comes into contact with friction and so the wheel with which the brake disc 2 rotates and thus brakes the commercial vehicle.
  • the two opposing brake pads 5, 6 are released from the brake disc 2 by a reset device to such an extent that it is no longer contacted by the brake pads 5, 6.
  • the restoring device has at least one restoring spring 8, which develops its force acting against the direction of application.
  • the restoring device of the disc brake 1 has two restoring springs 8. Both return springs 8 are preferably designed as identical parts.
  • each of the return springs 8 has an approximately U-shaped base section 81, one of the ends of which extend parallel to one another this angled leg 82a, 82b extends.
  • Each of the legs 82a, 82b has a straight area and a curved area, so that the ends of the angled legs 82a, 82b are aligned approximately parallel to the axis of rotation D of the brake disc 2.
  • a bent end region 83a, 83b extends from these angled legs 82a, 82b and extends into a receptacle 53, 63 in a radially outer end edge 56, 66 of the lining carrier plate 51, 61.
  • the cross section of the receptacles 53, 63 is slightly larger than the cross section of the end regions 83a, 83b of the return spring 8. Slightly larger here means a difference in diameter of preferably 10 - 50 percent.
  • the differently sized diameters enable the longitudinal axes LE of the end regions 83a, 83b to be aligned at an acute angle to the longitudinal axes LA of the receptacles 53, 63 of the lining carrier plates 51, 61, as shown in Figures 4 - 8.
  • the longitudinal axes LE of the end regions 83a, 83b of the return springs 8 viewed in the direction of the axis of rotation D of the brake disc 2, are aligned to diverge.
  • the receptacles 53, 63 in the lining carrier plates 51, 61 are aligned parallel to the pressure surface 57, 67 of the respective lining carrier plate 51, 61.
  • a tilting moment M is exerted via the return springs 8, in addition to their main task of pushing the two brake pads 5, 6 apart from the brake disc 2 after the braking process has taken place, through which the two brake pads 5, 6 are aligned with one another in such a way that an upper edge of the brake pad 5 that is radially away from the axis of rotation D of the brake disc 2 is held slightly closer to the brake disc 2 than a lower edge of the brake pad of the brake pads 5, 6 that is closer radially to the axis of rotation D of the brake disc 2.
  • the longitudinal axes L of the end regions 83a, 83b of the return springs 8 are aligned such that the acute-angled arrangement between the end regions 83a, 83b of the return springs 8 and the receptacles 53, 63 are angled in a tangential direction.
  • Figure 8 shows an example of a kinematic reversal of the acute-angled alignment between the end regions 83a, 83b of the return spring 8 and the receptacles 53, 63 in the lining carrier plates 51, 61, in which the longitudinal axes LE of the end region 83a of the return spring 8 is aligned almost vertically, while the Recording 53 is formed inclined in the direction of the side edge 55 in the lining carrier plate 51.
  • the receptacles 53, 63 are preferably provided tangentially outside respective lugs 54 of the lining carrier plates 51, which serve to guide lining retaining springs 9, which in the embodiment variant of the disc brake 1 shown here are attached to the lining carrier plate 51 using centrally arranged hoods 10 viewed in the tangential direction. 61 of the respective brake pad 5, 6 are secured.
  • the receptacles 53, 63 in the lining carrier plates 51, 61 have a recess which extends at an angle to the longitudinal axis LA of the receptacles 53, 63 and into which there is an offset the end regions 83a, 83b of the return springs 8 protrudes.
  • an inner wall delimiting the receptacles 53, 63 in the lining carrier plates 51, 61 has one or more grooves through which the frictional connection between the end regions 83a, 83b of the return springs 8 in the receptacles 53, 63 of the lining carrier plates 51, 61 continues is increased.

Landscapes

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

Abstract

L'invention concerne un frein à disque (1) pour un véhicule utilitaire, ledit frein à disque comprenant : un disque de frein (2) ; un étrier de frein (3) qui s'engage sur le disque de frein (2) et se présente sous la forme d'un étrier coulissant ; un support de frein fixe (4) auquel est fixé l'étrier de frein (3) ; des garnitures de frein (5, 6) qui présentent chacune une plaque de support de garniture (51, 61) et une garniture de friction (52, 62) fixée à celle-ci et qui sont situées de part et d'autre du disque de frein (2) dans l'étrier de frein (3) et qui peuvent être pressées contre des côtés opposés du disque de frein (2) ; un dispositif de rappel comprenant au moins un ressort de rappel (8) qui agit sur les plaques de support de garniture (51, 61) des garnitures de frein (5, 6) afin de rétracter activement les garnitures de frein (5, 6) reposant sur le disque de frein (2) après une opération de freinage, des régions d'extrémité (83a, 83b) de l'au moins un ressort de rappel (8) agissant sur les plaques de support de garniture (51, 61) des garnitures de frein (5, 6) de façon à exercer un couple.
EP23764275.6A 2022-09-14 2023-08-29 Frein à disque pour véhicule utilitaire Pending EP4587729A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102022123484.3A DE102022123484A1 (de) 2022-09-14 2022-09-14 Scheibenbremse für ein Nutzfahrzeug
PCT/EP2023/073693 WO2024056372A1 (fr) 2022-09-14 2023-08-29 Frein à disque pour véhicule utilitaire

Publications (1)

Publication Number Publication Date
EP4587729A1 true EP4587729A1 (fr) 2025-07-23

Family

ID=87889359

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23764275.6A Pending EP4587729A1 (fr) 2022-09-14 2023-08-29 Frein à disque pour véhicule utilitaire

Country Status (4)

Country Link
US (1) US20260078808A1 (fr)
EP (1) EP4587729A1 (fr)
DE (1) DE102022123484A1 (fr)
WO (1) WO2024056372A1 (fr)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6088234A (ja) * 1983-10-18 1985-05-18 Hosei Brake Kogyo Kk デイスクブレ−キ用摩擦パツドにおけるリタ−ンスプリングの取付穴形成方法
JP2552633Y2 (ja) * 1992-03-27 1997-10-29 トキコ株式会社 ディスクブレーキ
US7467693B2 (en) * 2002-04-10 2008-12-23 Akebono Corporation (North America) Disc brake pad return spring
JP2009127715A (ja) * 2007-11-21 2009-06-11 Akebono Brake Ind Co Ltd ディスクブレーキ装置用リターンスプリングの配置方法、リターンスプリング、およびディスクブレーキ装置
JP2009222202A (ja) * 2008-03-18 2009-10-01 Akebono Brake Ind Co Ltd ディスクブレーキ装置用リターンスプリングの配置構造
DE102019131840A1 (de) 2019-11-25 2021-05-27 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Scheibenbremse für ein Nutzfahrzeug
EP3954919B1 (fr) * 2020-08-11 2024-10-02 Meritor Heavy Vehicle Braking Systems (UK) Limited Ensemble frein

Also Published As

Publication number Publication date
US20260078808A1 (en) 2026-03-19
DE102022123484A1 (de) 2024-03-14
WO2024056372A1 (fr) 2024-03-21

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