EP4381203A1 - Scheibenbremse für ein nutzfahrzeug - Google Patents
Scheibenbremse für ein nutzfahrzeugInfo
- Publication number
- EP4381203A1 EP4381203A1 EP22757905.9A EP22757905A EP4381203A1 EP 4381203 A1 EP4381203 A1 EP 4381203A1 EP 22757905 A EP22757905 A EP 22757905A EP 4381203 A1 EP4381203 A1 EP 4381203A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- brake
- disc
- plunger
- inclination
- guide rails
- 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.)
- Withdrawn
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
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- 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
- F16D55/04—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 moving discs or pads away from one another against radial walls of drums or cylinders
- F16D55/14—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 moving discs or pads away from one another against radial walls of drums or cylinders with self-tightening action, e.g. by means of coacting helical surfaces or balls and inclined surfaces
-
- 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
Definitions
- the invention relates to a disc brake according to the preamble of claim 1 .
- the brake caliper also referred to as a sliding caliper, being mounted so as to be axially displaceable in relation to a brake disc by means of guide rails which are fastened to a vehicle-side brake carrier.
- the guide rails are usually fastened to the brake carrier by screwing and guided in sliding bushings of the brake caliper in such a way that the latter is axially displaced during braking in relation to a brake disc held non-rotatably on an axle of the vehicle.
- Such moments arise, for example, in the case of a strongly off-centre point of application of force on the brake caliper, as can occur in ferry operations.
- the weight of a brake cylinder held on the brake caliper also contributes to the unequal loading of the action-side brake pad, which occurs in particular with an application device that has a central brake plunger, with this brake plunger being aligned axially parallel to the axis of rotation of the brake disc.
- the oblique wear also means that at least the action-side brake lining has to be replaced prematurely, since the inlet-side area of the brake lining has already reached a permissible wear limit when the opposite, ie outlet-side area has not yet reached the wear limit.
- the invention is based on the object of further developing a disc brake of the generic type in such a way that the service life is increased and thus the operating costs are reduced and the functional reliability is improved.
- this constructive configuration ensures that the application-side brake pad is pressed against the brake disc in a distributed manner over the friction surface with the same surface pressure in the event of braking.
- the sum of the effective moments is positively influenced and a homogeneous pad wear is achieved.
- the brake plunger which is held in a bridge as part of the application device and which forms a thread pairing with an internal thread of a threaded hole in the bridge, it is possible to achieve the inclined position of the brake plunger by suitably machining the threaded hole.
- a further possibility of achieving the inclination of the brake plunger towards the run-in side of the brake disc consists in designing guide bores in the brake caliper, in which the guide rails are guided, to be correspondingly inclined. Since the caliper is usually made of cast iron, the guide bores can be modified accordingly during casting.
- Said inclined positioning of the brake plunger can also be achieved by a correspondingly configured bearing point on the brake caliper side, on which a brake lever of the application device is supported with its eccentric, so that the opposite bridge-side bearing or the bridge itself, in which the brake plunger is held rotatably, is also inclined is positioned.
- the angle at which the brake plunger is inclined is preferably ⁇ 5°, preferably 0.5° to 5°, relative to the axis of rotation of the brake disk.
- An adjusting device which engages with the plunger can also be adapted to the inclined position of the brake plunger, with which an air play of the brake linings and the brake disc caused by wear is compensated for.
- the inclination of the brake plunger runs in a horizontal and/or vertical plane when the disc brake is mounted, so that the arrangement of the brake plunger in the vertical plane remains unchanged.
- FIGS. 2 and 3 each show an exemplary embodiment of the invention, also in a partially sectioned plan view.
- a disc brake according to the prior art is shown in a schematic representation in FIG are.
- the direction of rotation of the brake disc 2 when driving forward is indicated by an arrow.
- the brake pad 3 on the application side is first pressed against the brake disc 2 by means of an application device 8, while the brake pad 3 on the reaction side is then pressed against the brake disc 2 due to the reaction forces caused by the moving brake caliper 1 being carried along.
- Each brake lining 3 consists of a lining carrier plate 11 and a friction lining 12 attached thereto, which makes contact with the brake disc 2 when braking.
- a pad retaining spring 9 is fastened to each of the pad carrier plates 11 and, in cooperation with a retaining bracket 10 , holds the brake pads 3 under prestress in a brake shaft of the brake caliper 1 or a brake carrier 14 on the vehicle.
- the brake caliper 1 Relative to the axis of rotation of the brake disc 2, the brake caliper 1 is mounted so that it can move axially on guide rails 15, which are connected to the brake carrier 14.
- the application device 8 has a brake plunger 4 which is arranged centrally and can be pressed axially displaceably against the brake lining 3 on the application side via a brake lever 13 , the brake lever 13 resting on the brake plunger 4 via a bearing ball.
- This brake plunger 4 consists of a threaded spindle 6, with which an adjustment device 5 is connected to compensate for a clearance, and a threaded sleeve designed as an adjusting spindle 7, which engages with an internal thread in an external thread of the threaded spindle 6 and with its the front side facing the pad carrier plate 11 of the brake pad 3 on the application side is firmly connected to a plate-shaped pressure piece 16 which rests securely against the pad carrier plate 11 in the direction of rotation, so that the adjusting spindle 7 is held in place in a twisting test.
- FIG. 2 shows a disc brake according to the invention in a partially sectioned plan view, with a brake plunger 4 which is mounted in a bridge 17 which can be displaced by means of the brake lever 13 against the brake lining 3 on the application side, i.e. the action side.
- the brake plunger 4 is inclined towards the entry side of the brake disc 2, based on the forward direction of travel of the commercial vehicle indicated by the arrow, the entry side being on the right in the figure.
- the angle of inclination a of the brake plunger 4, characterized by a dot-dash line Y, is ⁇ 5°, preferably 0.5° to 5°, in the example approximately 2°, relative to the axis of rotation X of the brake disc 2.
- the brake plunger 4 which is rotatably held in the bridge 17 via a pair of threads, is inclined towards the inlet side of the brake disc 2 by a corresponding design of the pair of threads brake plunger 4/bridge 17, with the threaded bore of the bridge 17 correspondingly inclined.
- FIG. 1 Another way of achieving the inclined course of the brake plunger 4 is illustrated in FIG.
- the guide rails 15 are aligned according to the inclination specified according to the invention, which is achieved in that the guide bore of the brake caliper 1 and aligned with a threaded bore in the brake carrier 14, into which a screw of the guide rail 15 is screwed, runs inclined.
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 |
|---|---|---|---|
| DE102021120048.2A DE102021120048B4 (de) | 2021-08-02 | 2021-08-02 | Scheibenbremse für ein Nutzfahrzeug |
| PCT/EP2022/071001 WO2023011995A1 (de) | 2021-08-02 | 2022-07-26 | Scheibenbremse für ein nutzfahrzeug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4381203A1 true EP4381203A1 (de) | 2024-06-12 |
Family
ID=83006015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22757905.9A Withdrawn EP4381203A1 (de) | 2021-08-02 | 2022-07-26 | Scheibenbremse für ein nutzfahrzeug |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4381203A1 (de) |
| CN (1) | CN117795223A (de) |
| DE (1) | DE102021120048B4 (de) |
| WO (1) | WO2023011995A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11971075B1 (en) | 2023-06-23 | 2024-04-30 | Bendix Commercial Vehicle Systems Llc | Single air disc brake tappet with features that mimic multiple tappets |
| US12523267B1 (en) | 2025-04-25 | 2026-01-13 | Kb Intellectual Property Gmbh & Co. Kg | Air disc brake tappet and brake pad backing plate with differently sized interface features |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3199634A (en) | 1962-11-22 | 1965-08-10 | Automotive Prod Co Ltd | Pivotable and slidable, closed loop type spot disc brake |
| GB1425753A (en) | 1973-06-27 | 1976-02-18 | Girling Ltd | Brakes for vehicles |
| DE10324424A1 (de) | 2003-05-30 | 2004-12-16 | Robert Bosch Gmbh | Reibungsbremse mit mechanischer Selbstverstärkung und Verfahren zu ihrer Betätigung |
| IT1397086B1 (it) | 2009-12-24 | 2012-12-28 | Freni Brembo Spa | Pinza per un freno di un veicolo. |
| DE102010050102A1 (de) * | 2010-10-29 | 2012-05-03 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Selbstverstärkende Scheibenbremse für ein Nutzfahrzeug |
| DE102012012833A1 (de) * | 2012-06-28 | 2014-01-02 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Scheibenbremse für ein Nutzfahrzeug sowie Bremsbelag für eine Scheibenbremse |
| DE102015114111B4 (de) * | 2015-08-26 | 2021-02-18 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Scheibenbremse für ein Nutzfahrzeug |
-
2021
- 2021-08-02 DE DE102021120048.2A patent/DE102021120048B4/de active Active
-
2022
- 2022-07-26 EP EP22757905.9A patent/EP4381203A1/de not_active Withdrawn
- 2022-07-26 WO PCT/EP2022/071001 patent/WO2023011995A1/de not_active Ceased
- 2022-07-26 CN CN202280053445.9A patent/CN117795223A/zh active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CN117795223A (zh) | 2024-03-29 |
| DE102021120048A1 (de) | 2023-02-02 |
| DE102021120048B4 (de) | 2024-02-01 |
| WO2023011995A1 (de) | 2023-02-09 |
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