WO2023020879A1 - Scheibenbremse für ein nutzfahrzeug sowie bremsbelag für eine scheibenbremse - Google Patents
Scheibenbremse für ein nutzfahrzeug sowie bremsbelag für eine scheibenbremse Download PDFInfo
- Publication number
- WO2023020879A1 WO2023020879A1 PCT/EP2022/072264 EP2022072264W WO2023020879A1 WO 2023020879 A1 WO2023020879 A1 WO 2023020879A1 EP 2022072264 W EP2022072264 W EP 2022072264W WO 2023020879 A1 WO2023020879 A1 WO 2023020879A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- brake
- disc
- pad
- lining
- carrier
- Prior art date
Links
- 238000006073 displacement reaction Methods 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 229910001018 Cast iron Inorganic materials 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910001141 Ductile iron Inorganic materials 0.000 description 1
- 241001441752 Philesturnus carunculatus Species 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
- F16D65/02—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
- 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
- F16D65/0977—Springs made from sheet metal
- F16D65/0978—Springs made from sheet metal acting on one pad only
-
- 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
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.
- a brake pad on the action side is pressed against a brake disc on the vehicle side when braking by means of a clamping device that can be actuated pneumatically or by an electric motor.
- the brake caliper relative to the brake disc, is displaced counter to the application direction of the action-side brake pad, taking along and pressing the opposite, reaction-side brake pad to the other side of the brake disc.
- the brake caliper After the brake has been released, the brake caliper remains in this position in which the brake pads, but at least the brake pad on the reaction side, are in contact with the brake disc without pressure but rubbing against it.
- the residual grinding torques of the brake pads that occur as a result when driving have a disadvantageous effect in that they lead to increased fuel consumption, as well as to a reduction in the service life of the brake disc and brake pads.
- DE 10 2007 001 213 discloses a disc brake with a restoring device which is arranged in one of the guide rails, via which the brake caliper is slidably held on the brake carrier, and which has a resilient restoring element, through which the Brake caliper is moved to a starting position.
- this design has proven itself.
- the use of this known restoring device in compressed air-actuated disc brakes in heavy commercial vehicles can lead to problems, since wide limits of variable influences due to component tolerances and component deformations are effective here, which do not always allow this restoring device to function reliably.
- a resetting device is arranged on the side opposite the application device and facing the reaction-side brake pad, whereby an effective, in particular automatic resetting of the brake caliper is achieved with at the same time minimal intervention in the system rigidity.
- the restoring device acts on the brake caliper, with the brake carrier acting as an abutment.
- a disc brake in which the restoring device has at least one restoring element attached to a brake lining, which is arranged between this brake lining and a stationary component, such as a brake carrier, and exerts a restoring force on the brake lining .
- disc brakes are used that are configured in such a way that a correspondence of the restoring device with the action-side brake carrier horns is only possible with a loss of caliper rigidity due to the space available. It is also not possible to connect the restoring device to the brake carrier horns assigned to the brake pad on the reaction side, since a pad retaining spring slides on the brake carrier horns. With these disc brakes it is therefore not possible to use the known restoring devices.
- 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, in particular of the brake pads and the brake discs, is increased with the simplest design and the operating costs are reduced overall.
- the design according to the invention offers considerable advantages. These result, among other things, from the extremely simple implementation of the invention, since the restoring element designed as a leaf spring can be produced from a simple spring sheet metal, for example by stamping and/or bending, with the attachment of the leaf spring to the rear side of the pad carrier plate facing away from the friction lining of the brake pad can be done through appropriate measures. This includes, for example, riveting, screwing, welding, wobbling, pressing or the like.
- a leaf spring is preferably provided on both sides of the brake pad, which is supported on the respectively associated brake carrier horn, with the respective leaf spring protruding beyond the brake pad on its two narrow sides.
- the protruding end of the leaf spring is braced in the axial direction relative to the brake carrier, so that the resulting spring force exerts a restoring force on the respective brake lining.
- the invention advantageously results in a pull-through protection that contributes to the overall functional reliability of the disc brake.
- the leaf springs attached to the back of the pad carrier plate form a kind of disruptive contour that effectively prevents the loss of components from the brake pads.
- the leaf springs By supporting the leaf springs on the stationary brake carrier, not only are the brake pads positioned towards the brake disc, but also the axially movable clamping device, whereby the centering of the brake pads and the clamping unit in relation to the brake disc achieves a remarkable reduction in residual grinding torques.
- the interface between the leaf springs and the brake carrier is designed in such a way that the leaf spring is automatically pre-tensioned when the brake pads are fitted.
- this preload can be achieved by forming a bevel on the brake carrier horns that rises in the direction in which the brake pad is pushed in. This is particularly advantageous inasmuch as such a contour is often already available as a standard form as the draft of the cast-iron brake carrier.
- a recess can be provided in the brake carrier horns, into which the free end of the spring arm of the leaf spring engages when the brake pad is pushed into the brake carrier, whereby an additional radial holding force acts on the brake pad and its unscrewing during brake actuation is prevented.
- this leads to a reduction in wear.
- the engagement of the leaf spring in the recess can be detected both acoustically and haptically, which signals correct installation of the brake pad.
- a decisive advantage of the configuration according to the invention, in addition to resetting the brake lining, is when the leaf springs lying opposite one another are attached symmetrically in the centroid of the brake lining, so that no additional tilting moment is exerted on the brake lining.
- two leaf springs are arranged, which are fastened to the opposite narrow sides of the brake pad, they can each be designed with different spring rates.
- the resulting non-uniform spring forces counteract tangential oblique wear of the brake lining, which occurs more frequently in the case of disc brakes that only have a central brake plunger.
- FIG. 1 is a plan view of a prior art disc brake
- FIGS. 2-5 each show an embodiment of the invention in a perspective view.
- FIG. 1 shows a disk brake 1 according to the prior art, which can be actuated pneumatically, hydraulically, electrically or a combination thereof.
- the disc brake 1 has a vehicle-side brake disc 2, against which brake pads 3 are pressed on both sides in the event of braking, which are held in a stationary brake carrier 6 so that they can be displaced axially.
- a brake caliper 10 spans the brake disk 2 , the brake caliper 10 also being slidably fastened to the brake carrier 6 and also having a mounting opening 9 through which the brake pads 3 can be inserted into the brake carrier 6 .
- a caliper back 12 of the brake caliper 10 is arranged in a receiving space opposite an application device, not shown, by means of which the associated brake pad 3 on the application side can be pressed against the brake disc 2 via a connected brake plunger 11 .
- Each brake pad 3 has a pad carrier plate 4 made of cast iron, preferably nodular cast iron, to which a friction pad 5 is attached on the side facing the brake disc 2, the pad carrier plate 4 having two opposite longitudinal sides and two opposite narrow sides in plan view. as can be seen particularly clearly in FIG.
- a pressure piece of the brake plunger 11 is in contact with the brake application-side pad carrier plate 4 .
- the back of the saddle 12 is connected via tension struts 13, which laterally delimit the assembly opening 9, to the saddle head, which accommodates the receiving space for the clamping device.
- the brake pads 3 are each positioned in a pad shaft between two brake carrier horns 7 of the brake carrier 6 .
- pad retaining springs 8 are attached to the mounting opening 9 facing side of the pad carrier plate, on which a pad retaining bracket 14 is supported, whereby the brake pads 3 are held under pretension in the brake carrier 6 . Furthermore, in the known disc brake, a restoring device is arranged, with which the brake pads 3 can be brought back after the brake has been released, this restoring device not being shown, but which can be found in DE 10 2016 117 777 A1.
- FIG 2 which shows the brake pads 3 in the non-applied position
- a partial section of the disc brake shows the rear side of the pad carrier plate 4 facing away from a brake disc 2, on which two leaf springs 15, 15', each with a spring arm 16, 16 ', are attached.
- the spring arms 16, 16' protrude beyond the associated narrow side of the pad carrier plate 4 in the circumferential direction of the brake side 2 and are supported on the associated brake carrier horn 7 of the brake carrier 6.
- the leaf spring 15, 15' is secured against rotation on the side of the lining carrier plate 4 facing away from the friction lining 5.
- the brake pads 3 are clamped, ie shifted towards a brake disc, not shown, in the braking function.
- the leaf springs 15, 15' or the spring arms 16, 16' are tensioned in contact with the brake carrier horns 7 serving as abutments such that when the brakes are released, the brake lining 3 is pulled back into an initial position.
- the brake carrier horns 7 each have a bevel 18 which rises from a pushed-in position of the brake pad 3 towards an end position.
- leaf springs 15, 15' which are Z-shaped in outline, are attached to the area of the pad carrier plate 4 opposite the pad retaining spring 8 and with their spring arms 16, 16' approximately in the foot area of the associated brake carrier horn 7 4, the leaf springs 15, 15' are arranged in the area of the pad carrier plate 4 facing the pad retaining spring 8 in the example shown in FIG.
- the spring arms 16 , 16 ′ each lie in a recess 19 which is embedded approximately in the head area of the respective brake carrier horn 7 , so that the brake pad 3 is held in the brake carrier 6 in a radially secured manner. Otherwise, the brake lining 3 in the example according to FIG. 4 assumes the same position, displaced in the direction of the brake disc, as that shown in FIG.
- the example according to FIG. 5 also shows a variant in which the brake carrier horns 7 are provided with recesses 19 in which the associated spring arm 16, 16′ of the leaf springs 15, 15′ rests in a form-fitting manner in the radial direction.
- these recesses 19 are provided approximately in the foot area of the respective brake carrier horn 7 .
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2024510303A JP2024529756A (ja) | 2021-08-20 | 2022-08-08 | 商用車用のディスクブレーキならびにディスクブレーキ用のブレーキパッド |
KR1020247005605A KR20240036633A (ko) | 2021-08-20 | 2022-08-08 | 유틸리티 차량을 위한 디스크 브레이크 및 디스크 브레이크를 위한 브레이크 라이닝 |
CN202280054971.7A CN117795224A (zh) | 2021-08-20 | 2022-08-08 | 用于商用车的盘式制动器以及用于盘式制动器的制动衬片 |
EP22761536.6A EP4388215A1 (de) | 2021-08-20 | 2022-08-08 | Scheibenbremse für ein nutzfahrzeug sowie bremsbelag für eine scheibenbremse |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102021121683.4A DE102021121683A1 (de) | 2021-08-20 | 2021-08-20 | Scheibenbremse für ein Nutzfahrzeug sowie Bremsbelag für eine Scheibenbremse |
DE102021121683.4 | 2021-08-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2023020879A1 true WO2023020879A1 (de) | 2023-02-23 |
Family
ID=83149603
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2022/072264 WO2023020879A1 (de) | 2021-08-20 | 2022-08-08 | Scheibenbremse für ein nutzfahrzeug sowie bremsbelag für eine scheibenbremse |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP4388215A1 (de) |
JP (1) | JP2024529756A (de) |
KR (1) | KR20240036633A (de) |
CN (1) | CN117795224A (de) |
DE (1) | DE102021121683A1 (de) |
WO (1) | WO2023020879A1 (de) |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007001213A1 (de) | 2007-01-05 | 2008-07-10 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Scheibenbremse, insbesondere für ein Nutzfahrzeug |
DE102012006111A1 (de) | 2012-03-26 | 2013-09-26 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Scheibenbremse, insbesondere für ein Nutzfahrzeug |
DE102012012832A1 (de) * | 2012-06-28 | 2014-01-02 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Scheibenbremse für ein Nutzfahrzeug sowie Bremsbelag für eine Scheibenbremse |
US20140367208A1 (en) * | 2013-06-18 | 2014-12-18 | Nissin Kogyo Co., Ltd. | Vehicle disc brake |
DE102014112665A1 (de) * | 2014-09-03 | 2016-03-03 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Bremsbelaghalterung einer Scheibenbremse, Scheibenbremse und Bremsbelag |
DE102016117777A1 (de) | 2016-09-21 | 2018-03-22 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Scheibenbremse für ein Nutzfahrzeug und Bremsbelagsatz |
WO2020208194A1 (de) * | 2019-04-10 | 2020-10-15 | Haldex Brake Products Ab | Vorrichtung zur rückstellung von bremsbelägen und scheibenbremse |
DE102020101058A1 (de) * | 2020-01-17 | 2021-07-22 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Scheibenbremse für ein Nutzfahrzeug und Bremsbelagsatz |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007315577A (ja) | 2006-05-29 | 2007-12-06 | Toyota Motor Corp | ディスクブレーキ装置 |
DE102017129672A1 (de) | 2017-12-12 | 2019-06-13 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Scheibenbremse für ein Nutzfahrzeug und Bremsbelagsatz |
-
2021
- 2021-08-20 DE DE102021121683.4A patent/DE102021121683A1/de active Pending
-
2022
- 2022-08-08 CN CN202280054971.7A patent/CN117795224A/zh active Pending
- 2022-08-08 KR KR1020247005605A patent/KR20240036633A/ko unknown
- 2022-08-08 JP JP2024510303A patent/JP2024529756A/ja active Pending
- 2022-08-08 WO PCT/EP2022/072264 patent/WO2023020879A1/de active Application Filing
- 2022-08-08 EP EP22761536.6A patent/EP4388215A1/de active Pending
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007001213A1 (de) | 2007-01-05 | 2008-07-10 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Scheibenbremse, insbesondere für ein Nutzfahrzeug |
DE102012006111A1 (de) | 2012-03-26 | 2013-09-26 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Scheibenbremse, insbesondere für ein Nutzfahrzeug |
DE102012012832A1 (de) * | 2012-06-28 | 2014-01-02 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Scheibenbremse für ein Nutzfahrzeug sowie Bremsbelag für eine Scheibenbremse |
US20140367208A1 (en) * | 2013-06-18 | 2014-12-18 | Nissin Kogyo Co., Ltd. | Vehicle disc brake |
DE102014112665A1 (de) * | 2014-09-03 | 2016-03-03 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Bremsbelaghalterung einer Scheibenbremse, Scheibenbremse und Bremsbelag |
DE102016117777A1 (de) | 2016-09-21 | 2018-03-22 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Scheibenbremse für ein Nutzfahrzeug und Bremsbelagsatz |
WO2020208194A1 (de) * | 2019-04-10 | 2020-10-15 | Haldex Brake Products Ab | Vorrichtung zur rückstellung von bremsbelägen und scheibenbremse |
DE102020101058A1 (de) * | 2020-01-17 | 2021-07-22 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Scheibenbremse für ein Nutzfahrzeug und Bremsbelagsatz |
Also Published As
Publication number | Publication date |
---|---|
CN117795224A (zh) | 2024-03-29 |
KR20240036633A (ko) | 2024-03-20 |
JP2024529756A (ja) | 2024-08-08 |
EP4388215A1 (de) | 2024-06-26 |
DE102021121683A1 (de) | 2023-02-23 |
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