EP4590979A1 - Scheibenbremse, verwendung der scheibenbremse und verfahren zum zuspannen der scheibenbremse - Google Patents
Scheibenbremse, verwendung der scheibenbremse und verfahren zum zuspannen der scheibenbremseInfo
- Publication number
- EP4590979A1 EP4590979A1 EP23768472.5A EP23768472A EP4590979A1 EP 4590979 A1 EP4590979 A1 EP 4590979A1 EP 23768472 A EP23768472 A EP 23768472A EP 4590979 A1 EP4590979 A1 EP 4590979A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- brake
- disc
- disc brake
- caliper
- lever
- 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
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
- F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
- F16D65/16—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
- F16D65/18—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together, e.g. for disc brakes
- F16D65/183—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together, e.g. for disc brakes with force-transmitting members arranged side by side acting on a spot type force-applying member
-
- 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
- F16D2121/00—Type of actuator operation force
- F16D2121/02—Fluid pressure
-
- 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
- F16D2121/00—Type of actuator operation force
- F16D2121/02—Fluid pressure
- F16D2121/04—Fluid pressure acting on a piston-type actuator, e.g. for liquid pressure
-
- 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
- F16D2125/00—Components of actuators
- F16D2125/18—Mechanical mechanisms
- F16D2125/20—Mechanical mechanisms converting rotation to linear movement or vice versa
- F16D2125/22—Mechanical mechanisms converting rotation to linear movement or vice versa acting transversely to the axis of rotation
- F16D2125/26—Cranks
-
- 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
- F16D2125/00—Components of actuators
- F16D2125/18—Mechanical mechanisms
- F16D2125/58—Mechanical mechanisms transmitting linear movement
- F16D2125/64—Levers
Definitions
- the present invention relates to a disc brake for a motor vehicle and/or bus with an electric generator brake, as well as a use of the disc brake in a motor vehicle and/or bus with an electric generator brake and a method for applying the disc brake.
- Disc brakes have design compromises at various points in order to achieve a certain delivery force. Due to the limited space available for the overall construction of a disc brake in a vehicle, brake levers are designed in such a way that they allow clamping while pivoting at a large pivot angle and with the formation of so-called progressive lines of force, even at high speeds.
- the disc brakes Due to cooperative braking behavior, for example in electrically powered vehicles, the disc brakes can be subjected to lower forces, so that these compromises can be eliminated in favor of an optimized and compact design.
- the object of the present invention is therefore to adapt the design of the disc brake to the requirements in electrically powered motor vehicles or buses.
- a disc brake according to the invention is intended for use in a motor vehicle and/or bus with an electric generator brake. It includes a brake disc with a rotation axis A and a set of brake pads for clamping the brake disc. It also has a brake caliper designed as a sliding caliper. It also has a clamping device for actuating the brake pads, which is arranged in a receiving space of a brake caliper. The disc brake also has an actuating element for introducing force into the clamping device with an actuating force. This can preferably be a brake cylinder, in particular a pneumatic brake cylinder.
- the clamping device also has a brake lever on which the actuating element acts with the actuating force.
- the clamping device acts on the brake pads with a clamping force along a clamping axis.
- the length of the brake lever is selected so that the length of the brake lever, the transmission ratio between the actuation force and the application force is between 1:15.60 - 1:16.45.
- This transmission ratio is particularly preferred for a bridge stroke of 2.5 - 4 mm.
- This transmission ratio is higher than with conventional generic disc brakes and has the advantage that individual parts can be dimensioned smaller, in particular the actuating element or the brake cylinder.
- the resulting installation space, particularly in the axial direction, can be used to enlarge batteries or the like.
- the brake lever can have a cap for receiving an actuating piston of the actuating element and can also have a curved rolling surface along which the brake lever rolls on a roller bearing in the receiving space of the brake caliper.
- the distance from the center of the curvature of the brake lever dome to the center of the curvature of the rolling surface of the brake lever is between 78-82 mm.
- the clamping device has the aforementioned roller bearing for the pivotable mounting of the brake lever, the brake lever and/or the roller bearing having means for limiting the pivot angle, the means being arranged such that the pivot angle is less than 90°, preferably less than 88° , is limited.
- Corresponding means can be found, for example, in EP 2 896 851 B1. This has the advantage that the height of the recording space can be reduced. The space gained in this way can be used to improve stability by thickening the walls.
- the brake caliper can have an installation opening, which has saddle struts with axial extension on the edge, the saddle struts having a radial thickness of more than 13 mm, preferably 14-17 mm, particularly preferably 15.5 mm +/- 1 mm. These radial thicknesses allow for better saddle stability and lower mechanical elasticity of the entire system.
- the brake caliper can also have a caliper back, with no further element spanning the installation opening in the axial direction protruding radially from the caliper back. This also allows installation space to be gained and miniaturization to be achieved.
- the disc brake can have a brake carrier with pad slots, whereby the pad slots have guide pockets on the edge for holding and guiding the brake pads. This means that no holder has to be provided at the installation opening, which also promotes a compact design.
- the guide pockets are advantageously formed by projections which protrude into the lining shaft on the edge opposite a lining shaft wall. With higher lateral forces there is a risk of deformation of these projections.
- disc brake according to the invention in a motor vehicle and/or bus with an electric generator brake, which carries out cooperative braking at the same time as the disc brake.
- Also according to the invention is a method for applying a disc brake according to the invention, wherein the brake lever is pivoted during the application process over the entire service life of the brake at a pivoting angle of less than 90°, preferably less than 88°.
- Fig.1 is a perspective view of a disc brake according to the invention.
- Fig. 2 is a side view of the disc brake of Fig. 1;
- Fig. 3 is a sectional view of the disc brake of Figs. 1 and 2;
- FIG. 4 Detailed view of Fig. 3 and
- Fig. 5 is a perspective view of the brake carrier of the disc brake.
- FIG. 6 shows a further perspective view of the brake carrier of FIG. 5 with brake pads inserted
- Fig. 7 is a further perspective view of Figs. 5 and 6 from a different direction with brake pads inserted.
- the present invention relates to a disc brake in motor vehicles and buses which use electric generator brakes and in which an electric motor in generator mode generates electrical energy during braking.
- the disc brake according to the invention itself can be actuated in a conventional manner, e.g. as a pneumatic brake or another type of actuation.
- the aforementioned vehicles are thus braked cooperatively.
- the disc brake according to the invention is adapted to the operation of cooperative braking.
- the disc brake 1 has, in a manner known per se, a brake disc 2 with a rotation axis A, which is used as a reference axis for defining a radial direction.
- the brake disc 2 is spanned by a brake caliper 3.
- a brake caliper 3 This is typically made of cast iron and can be made in one piece or from components screwed together in several parts. However, the one-piece design of the brake caliper 3 is preferred.
- the brake caliper is preferably designed as a sliding caliper and is attached to a vehicle-side brake carrier 4 in an axially displaceable manner parallel to the axis of rotation A.
- the brake carrier 4 has two pad shafts 5 for arranging two brake pads 6. When braking, the brake pads 6 rub against the brake disc 2 on both sides.
- the brake caliper 3 has a receiving space 7 in which a clamping device 8 is positioned, with a brake lever 10 which can be actuated via a brake cylinder 9 and which is designed as an eccentric 11 at the end and rests on a bridge 12 in which adjusting spindles 22 are mounted the associated brake pad 6 can be pressed against the brake disc 2.
- the longitudinal axis of the adjusting spindles 22 defines one Application axis Z.
- An actuating piston 20 of the brake cylinder 9 lies in a cap 19 of the brake lever 10.
- the brake caliper 3 is displaced in such a way that the opposite, reaction-side brake pad 6 is pressed against the other side of the brake disc 2, with this reaction-side brake pad 6 resting on a caliper back 13 of the brake caliper 3.
- an assembly opening 14 is provided on the side facing the action-side brake pad 4, which is closed by a closure plate 15, wherein the two mentioned adjusting spindles pass through this closure plate 15.
- the eccentric 11 is supported on the side opposite the bridge 12 on a caliper head 16 of the brake caliper 1, in areas that are semicircular over an angular range of approximately 180 ° as support surfaces 17 are formed.
- rolling bearings 18 are arranged between the support surfaces 17 and the eccentric 11.
- the design-related displaceability of this bridge 12 within the brake 1, in particular in relation to the brake carrier 4, is preferably 2.5 - 4 mm.
- reduced initial braking force may be applied at higher speeds due to cooperative braking. This allows the structural design of the disc brake to be changed in favor of smaller dimensions.
- the present invention is based on the idea of the point of application of the brake lever 10 for tightening the brake pads 6 and thus bringing the tightening axis Z closer to the axis of rotation A.
- the length L of the brake lever 10 can be between 78-82 mm based on the center point 201 of the curvature of the spherical cap 19 and on the center point 202 of the curvature of the rolling surface 50 along which the brake lever 10 rolls on the roller bearing 12. This is particularly highlighted in Figure 4.
- the pivoting track 51 corresponding to the rolling surface 50 is highlighted and was highlighted from the plane of the sheet.
- Such a long brake lever is not yet known for brakes.
- the extended lever reduces the necessary actuation force. Accordingly, the length or dimension of the brake cylinder 9 and/or another actuating element of the disc brake can be significantly reduced. This creates additional space in the axial direction within a vehicle for the arrangement of electric batteries or the like.
- the transmission ratio of the actuation force to be applied by the brake cylinder 9 to the application force which is exerted on the brake pads changes to a range between 1:15.60 - 1:16.45.
- This transmission ratio enables a reduction in the swivel angle and thus also in the space required by the brake lever 10, which is required for the swivel movement. If the distance between the brake lever and the brake pads is known, the optimal length of the brake lever can be calculated from the aforementioned gear ratio using trigonometric calculation.
- the pivoting movement of the brake lever is divided into the so-called idle stroke, the actuation stroke and the stroke reserve.
- the idle stroke refers to the stroke required to bridge the clearance of the brake pads. Very little force is required to overcome this. This is followed by the actuation stroke for applying the brake and a stroke reserve, which is maintained due to wear and to maintain the required application force.
- the stroke reserve is measured by the elasticity of the clamping device 8, i.e. how much the clamping device 8 yields elastically when actuated. Due to the repositioning of the point of application of the brake lever and thus the clamping axis Z, the elasticity of the clamping device 8 decreases.
- the stroke reserve to be kept can be reduced, which reduces the angle coverage of the brake lever 10 to a pivot angle of the brake lever 10 to less than 90 °, preferably less than 88 °.
- the pivoting lever only needs to be pivoted to a lesser extent than in the known prior art.
- This smaller pivoting also reduces the space required for the space to be provided.
- This gain in space allows the brake caliper to be further redesigned.
- the brake caliper has, in a manner typical for the design of a caliper, a lower opening for receiving and gripping over the brake disc 2.
- the brake caliper has an installation opening 23 on its caliper back for mounting the brake pads 6 in the brake carrier 4.
- Saddle struts 24 are arranged on both sides of the installation opening 23 and extend perpendicular to the plate plane of the brake disc 2.
- the radial thickness of these saddle struts 24 is preferably more than 13 mm, preferably 14-17 mm, in particular 15.5 mm +/- 1 mm. Saddle struts this thick are not yet known and are made possible by the additional space gained by repositioning the clamping axis Z and the components necessary for clamping in the direction of the rotation axis.
- the thickness of the brake pads and/or the brake disc, as well as the brake disc diameter can also be reduced.
- the installation size of the brake is reduced.
- FIG 5 shows a brake carrier 4 for use in the disc brake of FIGS limited to brake carrier horns 29.
- the lining shafts 26, 27 have guide pockets 21 below the support surfaces 28a, in which the brake pads are inserted via edge-side projections, if necessary with the aid of retaining springs.
- the guide pockets 21 are formed by a projection 30 projecting into the shaft, which in turn has a front support surface 28b.
- the outer contour of the brake pads essentially corresponds to the outer contour of the pad shaft.
- An edge-side open area 28c is arranged between the support surfaces 28a and 28b.
- the edge-side open area 28b of the projection 30 is rectangular, with the special feature that the extension of the open area 28b in the axial direction relative to the rotation axis A is larger than the extension of the support surface in the radial direction. Normally at this point one would try to achieve the most even distribution of force possible over a large area with high attacking forces.
- this form of holder advantageously saves space for the overall height of the brake and at the same time enables a comparatively delicate design of the brake carrier 4 with reduced space requirements and its own weight.
- FIGS. 6 and 7 show the brake carrier 4 with brake pads 6 inserted, with ears 30 of the brake pad 6 resting in the shaped pockets 21, so that the brake pad 6 is guided in the shaped pockets.
- the brake pad carrier is advantageously supported at several points by the brake pad horns in the direction of insertion of the pad shaft.
- both the brake carrier has edge-side support surfaces 28a and 28c as well as support surfaces 32a, 32b at an angle of 80-100°, preferably perpendicular, to these support surfaces 28a and 28c at the foot of the respective lining carrier core 29 or at the base of the projection 30.
- This double support allows better distribution of force when lateral forces are applied.
- Fig. 8 shows the installation of the disc brake within the rim contour.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022123994.2A DE102022123994A1 (de) | 2022-09-19 | 2022-09-19 | Scheibenbremse, Verwendung der Scheibenbremse und Verfahren zum Zuspannen der Scheibenbremse |
| PCT/EP2023/074042 WO2024061593A1 (de) | 2022-09-19 | 2023-09-01 | Scheibenbremse, verwendung der scheibenbremse und verfahren zum zuspannen der scheibenbremse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4590979A1 true EP4590979A1 (de) | 2025-07-30 |
Family
ID=88017907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23768472.5A Pending EP4590979A1 (de) | 2022-09-19 | 2023-09-01 | Scheibenbremse, verwendung der scheibenbremse und verfahren zum zuspannen der scheibenbremse |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20260085730A1 (de) |
| EP (1) | EP4590979A1 (de) |
| DE (1) | DE102022123994A1 (de) |
| WO (1) | WO2024061593A1 (de) |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4231560C2 (de) * | 1992-09-21 | 2002-07-11 | Perrot Bremse Gmbh Deutsche | Betätigungsvorrichtung für eine Gleitsattel-Scheibenbremse |
| DE19515063C2 (de) * | 1995-04-27 | 2002-06-06 | Knorr Bremse Systeme | Scheibenbremse für Fahrzeuge, insbesondere Straßenfahrzeuge |
| DE19907958B4 (de) * | 1999-02-24 | 2004-04-22 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Elektromechanisch über ein Zykloidengetriebe betätigte Scheibenbremse für Fahrzeuge |
| DE10140077B4 (de) * | 2001-08-16 | 2014-08-21 | Wabco Gmbh | Zuspanneinrichtung für Radbremsen mit Lüftspielzustellvorrichtung |
| DE10252301B4 (de) * | 2002-02-13 | 2006-01-05 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Scheibenbremse mit elekrisch angetriebener Nachstellvorrichtung |
| DE102009031559A1 (de) * | 2008-07-04 | 2010-01-07 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Pneumatisch betätigbare Scheibenbremse sowie Bremszylinder |
| DE102008035370A1 (de) * | 2008-07-30 | 2010-02-04 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Nachstellvorrichtung für eine Scheibenbremse |
| DE102013101047B4 (de) * | 2012-03-26 | 2021-05-12 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Zuspannvorrichtung für eine drehhebelbetätigte Scheibenbremse |
| AT512683B1 (de) * | 2012-04-12 | 2024-12-15 | Bosch Gmbh Robert | Bremssystem und Bremsverfahren für eine elektrisch betätigte, nicht-lineare Reibungsbremse |
| DE102014100561B4 (de) | 2014-01-20 | 2025-12-24 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Scheibenbremse für ein Nutzfahrzeug |
| DE102015114351B4 (de) * | 2015-08-28 | 2022-02-03 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Scheibenbremse eines Nutzfahrzeugs |
| DE102016103187A1 (de) * | 2016-02-24 | 2017-08-24 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Scheibenbremse mit einer Schnellanlegevorrichtung |
| DE102021105321B3 (de) * | 2021-03-05 | 2022-09-15 | Schaeffler Technologies AG & Co. KG | Bremsvorrichtung für eine Radnabenantriebsanordnung |
-
2022
- 2022-09-19 DE DE102022123994.2A patent/DE102022123994A1/de active Pending
-
2023
- 2023-09-01 WO PCT/EP2023/074042 patent/WO2024061593A1/de not_active Ceased
- 2023-09-01 EP EP23768472.5A patent/EP4590979A1/de active Pending
- 2023-09-01 US US19/112,633 patent/US20260085730A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE102022123994A1 (de) | 2024-03-21 |
| US20260085730A1 (en) | 2026-03-26 |
| WO2024061593A1 (de) | 2024-03-28 |
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