EP4251898A1 - Dispositif de freinage comportant un disque bi-matiere et vehicule comportant un tel dispositif de freinage - Google Patents
Dispositif de freinage comportant un disque bi-matiere et vehicule comportant un tel dispositif de freinageInfo
- Publication number
- EP4251898A1 EP4251898A1 EP21798740.3A EP21798740A EP4251898A1 EP 4251898 A1 EP4251898 A1 EP 4251898A1 EP 21798740 A EP21798740 A EP 21798740A EP 4251898 A1 EP4251898 A1 EP 4251898A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- brake
- brake disc
- bowl
- braking device
- braking
- 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- Withdrawn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
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
- F16D65/12—Discs; Drums for disc brakes
- F16D65/123—Discs; Drums for disc brakes comprising an annular disc secured to a hub member; Discs characterised by means for mounting
-
- 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
-
- 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
- F16D2065/13—Parts or details of discs or drums
- F16D2065/1304—Structure
- F16D2065/1316—Structure radially segmented
-
- 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
- F16D2065/13—Parts or details of discs or drums
- F16D2065/134—Connection
- F16D2065/1344—Connection permanent, e.g. by casting
-
- 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
- F16D2200/0013—Cast iron
-
- 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
-
- 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
- F16D2250/00—Manufacturing; Assembly
- F16D2250/0007—Casting
- F16D2250/0015—Casting around inserts
Definitions
- TITLE BRAKING DEVICE COMPRISING A DISC Bl- MATERIAL AND VEHICLE COMPRISING SUCH A DEVICE
- the present invention relates to an automobile braking device which comprises a brake disc of the bi-material type and a brake caliper.
- the present invention relates more particularly to such a braking device which comprises a brake disc of the bi-material type and a brake caliper, the brake disc comprising a first part which forms a bowl making it possible to secure the brake disc to the vehicle and a second part overmolded around the peripheral edge of the bowl, with two overmolding parts which are defined as being two parts of said second part of the brake disc which cover each of the two sides of the peripheral edge of the bowl, the second part of the brake comprising on each face a braking track, the brake caliper comprising two braking pads adapted to brake the rotation of the brake disc by friction against respectively each of the two braking tracks.
- Document US-B2-10138963 discloses such a braking device which comprises a brake disc of the bi-material type with a first part which forms a bowl allowing the brake disc to be secured to the vehicle and a second part molded around the edge. peripheral of the bowl, with overmoulding parts which are defined as being parts of said second part of the brake disc which cover each of the two sides of the peripheral edge of the bowl.
- cementite which is a crystalline structure of iron carbide which has the particularity of being very hard and which shape during the molding of the second part of the brake disc around the peripheral end of the bowl.
- cementite complicates the machining operations of the braking tracks, reducing the life of the machining tools and also disrupts the work of the braking pads if they are in contact with this cementite.
- the device according to the invention makes it possible to remedy these drawbacks.
- a braking device which comprises a brake disc of the bi-material type and a brake caliper, the brake disc comprising a first part which forms a bowl making it possible to secure the brake disc on the vehicle and a second part overmolded around the peripheral edge of the bowl, with two overmolding parts which are defined as being two parts of said second part of the brake disc which each cover both sides of the peripheral edge of the bowl, the second part of the brake disc comprising a braking track on each side, the brake caliper comprising two braking pads adapted to brake the rotation of the brake disc by friction against respectively each of the two braking tracks, the thickness of each of the two overmolding parts being at least 4 mm and the friction surface on the braking track of the two brake pads covering at least partly said overmolding parts molding, with the inner peripheral edges of the two overmoulding parts which have a draft angle which is between 95 degrees and 105 degrees with the peripheral part of the bowl, said draft angle preferably being 100 degrees.
- the two overmolding parts have an annular shape.
- the friction surfaces on the braking tracks of the two brake pads cover the overmoulding parts by at least 2 mm in width.
- the bowl is formed from a sheet metal plate by stamping and the second part of the brake disc is formed by molding in cast iron.
- the present invention also relates to a vehicle which comprises at least one such braking device.
- FIG. 1 shows a perspective view of a braking device according to the invention for a motor vehicle which comprises a brake disc of the bi-material type and a brake caliper.
- FIG. 2 shows a partial sectional view of the brake disc and of one of the two brake pads of the braking device according to the invention.
- FIG. 3 shows a detail view in section of the brake disc according to the invention at the location of the overlap zone of a second part of the brake disc around the peripheral edge of a first part of said brake disc.
- FIG. 1 represents a braking device 1 for a motor vehicle which comprises a brake disc 2 of the bi-material type and a brake caliper 3.
- the brake disc 2 comprises a first part 21 which forms a bowl, making it possible to secure the brake disc 2 to the vehicle and a second part 22 molded around the peripheral edge 211 of the bowl 21 .
- Bowl 21 of brake disc 2 is formed from a sheet metal plate by stamping.
- the second part 22 of the brake disc 2 is formed by a cast steel casting process.
- Two overmolding parts 221 of the second part 22 of the brake disc 2 are defined as being two parts of the second part 22 of the brake disc 2 which each cover the two sides of the peripheral edge 211 of the bowl 21 .
- the second part 22 of the brake disc 2 comprises on each side a braking track 222.
- the brake caliper 3 comprises two brake pads 31 which are adapted to brake the rotation of the brake disc 2 by friction along two friction surfaces respectively against each of the two braking tracks 222.
- Figure 2 shows a partial sectional view of the brake disc 2 and one of the two brake pads 31.
- cementite 223 which is a crystalline structure of iron carbide which has the particularity of being very hard and which forms during the molding of the second part 22 of brake disc 2 around peripheral end 211 of bowl 21 .
- cementite 223 complicates the machining operations of the braking tracks 222, reducing the life of the machining tools and also disturbs the work of the braking pads 31 if these are in contact with this cementite. 223.
- the cementite 223 is essentially present over a thickness of 4 mm in the two overmolding parts 221 .
- the thickness of each of the two overmolding parts 221 must be at least 4 mm.
- the brake pads 31 must not come into friction along the braking tracks 222 only with a friction surface which is positioned beyond the peripheral end 211 of bowl 21 .
- a 2 mm Erec covering strip is provided above the molding part 223 of the second part 22 of the brake disc 2.
- FIG. 3 represents a detail view in section of the braking disc 2 at the location of the zone of overlap of the second part 22 around the peripheral edge 211 of the bowl 21 .
- the inner peripheral edges 224 of the two molding parts 221 which have a draft angle ad which is between 95 degrees and 105 degrees with the peripheral edge 211 of the bowl 21 .
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 |
|---|---|---|---|
| FR2012181A FR3116577B1 (fr) | 2020-11-26 | 2020-11-26 | Dispositif de freinage comportant un disque bi-matiere et vehicule comportant un tel dispositif de freinage |
| PCT/FR2021/051680 WO2022112668A1 (fr) | 2020-11-26 | 2021-09-29 | Dispositif de freinage comportant un disque bi-matiere et vehicule comportant un tel dispositif de freinage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4251898A1 true EP4251898A1 (fr) | 2023-10-04 |
Family
ID=75746707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21798740.3A Withdrawn EP4251898A1 (fr) | 2020-11-26 | 2021-09-29 | Dispositif de freinage comportant un disque bi-matiere et vehicule comportant un tel dispositif de freinage |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4251898A1 (fr) |
| FR (1) | FR3116577B1 (fr) |
| WO (1) | WO2022112668A1 (fr) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1755860C3 (de) | 1968-07-02 | 1975-04-10 | Volkswagenwerk Ag, 3180 Wolfsburg | Anordnung mit einer als dünner, durchgehender Metallstab ausgebildeten Hinterachsenantriebswelle für Kraftfahrzeuge mit Frontmotor |
| US6523651B2 (en) * | 2000-09-14 | 2003-02-25 | Visteon Global Technologies, Inc. | Brake disc with hat section having ribs that support a friction ring without bonding |
| CN102239344B (zh) * | 2008-05-08 | 2014-11-12 | 瑞锡尼弗莱诺斯可变资本股份公司 | 复合制动盘 |
| US9027718B2 (en) * | 2011-08-31 | 2015-05-12 | GM Global Technology Operations LLC | Light-weight and sound-damped brake rotor and method of manufacturing the same |
| FR3010756B1 (fr) * | 2013-09-18 | 2017-01-13 | Peugeot Citroen Automobiles Sa | Disque de frein d'un vehicule automobile |
| FR3023338B1 (fr) * | 2014-07-07 | 2018-01-19 | Psa Automobiles Sa. | Element rotatif de freinage comportant des bossages autour des percages de fixation |
| DE102015217797A1 (de) * | 2015-09-17 | 2017-03-23 | Continental Teves Ag & Co. Ohg | Verbundgussbremsscheibe für eine Kraftfahrzeugscheibenbremse |
| KR101866058B1 (ko) | 2016-09-22 | 2018-06-11 | 현대자동차주식회사 | 솔리드 타입의 브레이크디스크 및 그 제조방법 |
-
2020
- 2020-11-26 FR FR2012181A patent/FR3116577B1/fr active Active
-
2021
- 2021-09-29 EP EP21798740.3A patent/EP4251898A1/fr not_active Withdrawn
- 2021-09-29 WO PCT/FR2021/051680 patent/WO2022112668A1/fr not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| FR3116577A1 (fr) | 2022-05-27 |
| WO2022112668A1 (fr) | 2022-06-02 |
| FR3116577B1 (fr) | 2024-02-16 |
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Owner name: STELLANTIS AUTO SAS |
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