WO2015040296A1 - Motor vehicle disc brake - Google Patents

Motor vehicle disc brake Download PDF

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Publication number
WO2015040296A1
WO2015040296A1 PCT/FR2014/052045 FR2014052045W WO2015040296A1 WO 2015040296 A1 WO2015040296 A1 WO 2015040296A1 FR 2014052045 W FR2014052045 W FR 2014052045W WO 2015040296 A1 WO2015040296 A1 WO 2015040296A1
Authority
WO
WIPO (PCT)
Prior art keywords
flange
brake
brake disc
ring
bowl
Prior art date
Application number
PCT/FR2014/052045
Other languages
French (fr)
Inventor
Vincent SCHANG
Emmanuel GIGARD
Original Assignee
Peugeot Citroen Automobiles Sa
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 Peugeot Citroen Automobiles Sa filed Critical Peugeot Citroen Automobiles Sa
Priority to EP14755886.0A priority Critical patent/EP3047172A1/en
Priority to CN201480051562.7A priority patent/CN105556156B/en
Publication of WO2015040296A1 publication Critical patent/WO2015040296A1/en

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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
    • F16D65/00—Parts or details
    • F16D65/02—Braking members; Mounting thereof
    • F16D65/12—Discs; Drums for disc brakes
    • F16D65/128—Discs; Drums for disc brakes characterised by means for cooling
    • 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
    • F16D65/00—Parts or details
    • F16D65/02—Braking members; Mounting thereof
    • F16D2065/13—Parts or details of discs or drums
    • F16D2065/134—Connection
    • F16D2065/1356—Connection interlocking

Definitions

  • the present invention relates to a brake disc of a motor vehicle.
  • the invention belongs to the field of braking devices for motor vehicles.
  • Known braking devices can brake a wheel of a vehicle by clamping a brake ring of a brake disc fixed on a hub of this wheel. The tightening is obtained by moving, against the brake ring, two brake pads disposed on either side of the disc. The friction of the brake pads against the brake ring of the disk converts the mechanical energy of rotation of the disk into heat energy and brakes the wheel of the vehicle.
  • the brake disc is generally made of a single piece of cast iron, which has the disadvantage of being heavy. This affects the performance and fuel consumption of the vehicle.
  • Document EP-A2-1 892 434 discloses a brake disk consisting, on the one hand, of a cast iron brake ring for rubbing against brake pads and, on the other hand, of a central steel bowl. for fixing the brake disc to the hub of a wheel of a vehicle.
  • Such a brake disk has a reduced mass, but has a disadvantage: the connection between the central bowl and the brake ring presents risks of rupture during the braking of the vehicle.
  • an automotive brake disc comprising:
  • the central bowl has a circular flange, a cylindrical portion and a flange;
  • the cylindrical portion extends from the outer periphery of the flange to the flange;
  • the rim extends radially between the cylindrical portion and the braking ring
  • the outer periphery of the rim is a polygon whose vertices are rounded.
  • the cylindrical portion comprises at least one recess.
  • This recess reduces the mass of the central bowl and therefore that of the brake disc.
  • the braking ring is overmolded on the rim.
  • the flange comprises a plurality of bores.
  • the flange comprises at least one centering pin.
  • This centering pin facilitates the correct positioning of the brake disc relative to a wheel hub.
  • the flange mentioned above comprises in its center a circular recess.
  • This recess facilitates the centering of the brake disc on a wheel hub bearing.
  • this flange comprises in its center a stamped portion extending in the opposite direction to the braking ring.
  • This stamped portion is used to seal a bearing of the wheel hub on which the disk is intended to be fixed.
  • the central bowl is made by stamping a sheet of steel or stainless steel.
  • this sheet has a thickness of between one and four millimeters.
  • the invention also relates to a motor vehicle comprising at least one such brake disc.
  • FIG. 1A is a perspective view of a first particular embodiment of a brake disk according to the invention
  • FIG. 1 B is a sectional view of a brake disc according to this first particular embodiment
  • FIG. 1C is a perspective view of a central bowl of a brake disc according to this same first embodiment
  • FIG. 2A is a perspective view of a second particular embodiment of a brake disc according to the invention.
  • FIG. 2B is a sectional view of a brake disc according to this second particular embodiment
  • FIG. 2C is a perspective view of a central bowl of a brake disc according to the same second embodiment.
  • Figures 1A, 1B and 1C show views of a brake disc 1 of a motor vehicle, in a first particular embodiment of the invention.
  • the brake disc 1 is intended to be fixed on a wheel hub and contributes to the braking of this wheel.
  • This brake disk 1 comprises a braking ring 11 and a central bowl 12.
  • the brake ring 1 1 receives the braking forces of the vehicle. In a conventional manner, these braking forces are applied by clamping brake pads on either side of this braking ring January 1. The friction of the brake pads against the brake ring 1 1 converts the mechanical energy of rotation of the disc 1 into heat energy and brakes the wheel of the vehicle.
  • the brake ring 1 1 is for example made of cast iron. Alternatively, other materials adapted to the braking of a vehicle can be used for the realization of the brake ring January 1.
  • the central bowl 12 is intended to be fixed to a wheel hub of the vehicle.
  • this bowl 12 is formed of a circular flange 122, a cylindrical portion 123 and a flange 127.
  • the circular flange 122 has in its center a circular recess 124.
  • the circular recess 124 facilitates the centering of the brake disc 1 on a wheel hub bearing.
  • This flange 122 also comprises bores 125 and at least one centering lug 126, arranged around the circular recess 124.
  • the flange 122 may comprise four bores 125 and two centering lugs 126.
  • the bores 125 are intended to come opposite bores made on the wheel hub on which the brake disc 1 can be fixed by nuts. This fixing is performed by positioning these nuts through the bores 125 of the brake disc 1 and screwing the nuts in the bores of the wheel hub.
  • each centering pin 126 extends axially in the direction of the brake ring January 1 and is intended to cooperate with a bore of the wheel hub.
  • Each lug 126 thus facilitates the correct positioning of the brake disc 1 relative to the wheel hub.
  • the cylindrical portion 123 extends between the outer periphery of the circular flange 122 and the flange 127.
  • the flange 127 extends radially between the cylindrical portion 123 and the brake ring January 1.
  • the brake ring 1 1 is connected to the bowl 12 by overmolding on the flange 127. Overmolding means that a portion of the central bowl 12 is embedded in the material of the brake ring January 1.
  • the outer periphery of the flange 127 visible in Figure 1 C, of circular general shape, is a polygon whose vertices are rounded.
  • the shape of the periphery of the rim 127 makes it possible, unlike a totally circular shape, to create variations in the radius of the periphery of the rim 127 which make it possible to block the rotation of the central bowl 12 with respect to the braking ring 1 1.
  • peripheral ripples of the rim 127 make it possible to improve the connection of the bowl 12 with the braking ring 11, in particular during braking. This avoids a rupture of the overmolded connection between the brake ring January 1 and the bowl 12 during braking.
  • Recesses 121 are made in the cylindrical portion 123 to reduce the mass of the bowl 12 and thus the brake disc 1.
  • the recesses 121 do not extend to the rim 127. This makes it possible to improve the mechanical strength of the bowl 12, in particular during a braking. In addition, this makes it possible to minimize the risk of "putting in umbrella” of the brake ring 1 1.
  • umbrella is meant that the ends of the ring 1 1 fold (like an umbrella), which affects the proper functioning of the brake disc by creating a residual friction between the brake ring and the pads of brake.
  • the cylindrical portion 123 may have an inner diameter corresponding to the outer diameter of the wheel hub. Thus, during the introduction of the brake disc 1, the cylindrical portion 123 participates in the correct positioning of the brake disc 1 relative to the wheel hub.
  • the bowl 12 may for example be obtained by stamping a sheet of a material such as steel or stainless steel.
  • a steel sheet having a thickness of between 1 and 4 millimeters (mm), is well adapted to the production of the bowl 12 and makes it possible to reduce the mass of the brake disc 1.
  • FIGS. 2A, 2B and 2C show views of a brake disc 2 of a motor vehicle, in a second particular embodiment of the invention.
  • the brake disc 2 is intended to be fixed on a wheel hub and participates in the braking of this wheel.
  • This brake disc 2 comprises a braking ring 21 and a central bowl 22.
  • the braking ring 21 receives the braking forces of the vehicle. In a conventional manner, these braking forces are applied by clamping brake pads on either side of this braking ring 21.
  • the brake ring 21 is for example made of cast iron. Alternatively, other materials adapted to the braking of a vehicle can be used for the realization of the braking ring 21.
  • the central bowl 22 is intended to be fixed to a wheel hub of the vehicle.
  • This bowl 22 is formed of a circular flange 222, a cylindrical portion 223 and a flange 227.
  • the circular flange 222 comprises at its center a stamped portion 224.
  • the stamped portion 224 allows the positioning of a wheel rim on the brake disc 2 and sealingly protects a bearing of the hub. wheel.
  • This flange 222 also has bores 225 and at least one centering pin 226, arranged around the circular recess 224.
  • the flange 222 may comprise four bores 225 and two centering pins 226.
  • the bores 225 are intended to come opposite bores made on the wheel hub on which the brake disc 2 can be fixed by nuts. This fixing is performed by positioning these nuts through the bores 225 of the brake disc 2 and screwing the nuts in the bores of the wheel hub.
  • each centering pin 226 extends axially in the direction of the brake ring 21 and is intended to cooperate with a bore of the wheel hub.
  • Each lug 226 thus facilitates the correct positioning of the brake disk 2 relative to the wheel hub.
  • the cylindrical portion 223 extends between the outer periphery of the circular flange 222 and the flange 227.
  • the flange 227 extends radially between the cylindrical portion 223 and the braking ring 21.
  • the brake ring 21 is connected to the bowl 22 by overmolding on the rim
  • the outer periphery of the flange 227 visible in FIG. 2C, of circular general shape, is a polygon whose vertices are rounded.
  • peripheral ripples of the rim 227 make it possible to improve the connection of the bowl 22 with the braking ring 21, in particular during braking. This avoids a rupture of the overmolded connection between the brake ring 21 and the bowl 22 during braking.
  • Recesses 221 are made in the cylindrical portion 223 to reduce the mass of the bowl 22 and thus the brake disc 2.
  • the recesses 221 do not extend to the rim 227. This improves the mechanical strength of the bowl 22, particularly during braking. In addition, as in the first embodiment, the risk of umbrella setting of the brake ring 21 is thus minimized.
  • the cylindrical portion 223 may have an inner diameter corresponding to the outer diameter of the wheel hub. Thus, during the introduction of the brake disc 2, the cylindrical portion 223 participates in the correct positioning of the brake disc 2 relative to the wheel hub.
  • the bowl 22 may for example be obtained by stamping a sheet of a material such as steel or stainless steel. For example, a steel sheet, having a thickness of between 1 and 4 millimeters (mm), is well adapted to the production of the bowl 22 and makes it possible to reduce the mass of the brake disc 2.
  • a brake disk according to the invention has a low mass and the mechanical strength of the connection between the bowl and the brake ring is improved, in particular during braking of the vehicle.
  • the invention further facilitates the positioning of the brake disc when mounted on a wheel hub.

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

Abstract

In this motor vehicle disc brake (1) comprising a braking ring (11) and a central bowl (12) secured to this braking ring (11), the central bowl (12) comprises a circular flange (122), a cylindrical part (123) and a rim (127). The cylindrical part (123) extends from the external periphery of the flange (122) to the rim (127). The rim (127) extends radially between the cylindrical part (123) and the braking ring and the external periphery of the rim (127) is a polygon the corners of which are rounded.

Description

DISQUE DE FREIN D'UN VEHICULE AUTOMOBILE  BRAKE DISC OF A MOTOR VEHICLE
La présente invention se rapporte à un disque de frein d'un véhicule automobile. The present invention relates to a brake disc of a motor vehicle.
L'invention appartient au domaine des dispositifs de freinage des véhicules automobiles.  The invention belongs to the field of braking devices for motor vehicles.
Des dispositifs de freinage connus permettent de freiner une roue d'un véhicule par serrage d'un anneau de freinage d'un disque de frein fixé sur un moyeu de cette roue. Le serrage est obtenu par le déplacement, contre l'anneau de freinage, de deux plaquettes de frein disposées de part et d'autre du disque. Le frottement des plaquettes de frein contre l'anneau de freinage du disque transforme l'énergie mécanique de rotation du disque en une énergie calorifique et freine la roue du véhicule.  Known braking devices can brake a wheel of a vehicle by clamping a brake ring of a brake disc fixed on a hub of this wheel. The tightening is obtained by moving, against the brake ring, two brake pads disposed on either side of the disc. The friction of the brake pads against the brake ring of the disk converts the mechanical energy of rotation of the disk into heat energy and brakes the wheel of the vehicle.
Le disque de frein est généralement réalisé en une seule pièce en fonte, qui présente l'inconvénient d'être lourde. Cela nuit aux performances et à la consommation en carburant du véhicule.  The brake disc is generally made of a single piece of cast iron, which has the disadvantage of being heavy. This affects the performance and fuel consumption of the vehicle.
On connaît du document EP-A2-1 892 434 un disque de frein constitué, d'une part, d'un anneau de freinage en fonte pour frotter contre des plaquettes de frein et d'autre part, d'un bol central en acier pour fixer le disque de frein au moyeu d'une roue d'un véhicule.  Document EP-A2-1 892 434 discloses a brake disk consisting, on the one hand, of a cast iron brake ring for rubbing against brake pads and, on the other hand, of a central steel bowl. for fixing the brake disc to the hub of a wheel of a vehicle.
Un tel disque de frein possède une masse réduite, mais présente un inconvénient : la liaison entre le bol central et l'anneau de freinage présente des risques de rupture lors du freinage du véhicule.  Such a brake disk has a reduced mass, but has a disadvantage: the connection between the central bowl and the brake ring presents risks of rupture during the braking of the vehicle.
L'invention a pour but de remédier aux inconvénients de l'art antérieur. Dans ce but, la présente invention propose un disque de frein automobile comportant :  The invention aims to overcome the disadvantages of the prior art. For this purpose, the present invention provides an automotive brake disc comprising:
un anneau de freinage ;  a braking ring;
un bol central, solidaire de l'anneau de freinage ;  a central bowl, integral with the braking ring;
ce disque de frein étant remarquable en ce que :  this brake disc being remarkable in that:
- le bol central comporte un flasque circulaire, une partie cylindrique et un rebord ;  - The central bowl has a circular flange, a cylindrical portion and a flange;
la partie cylindrique s'étend de la périphérie externe du flasque au rebord ;  the cylindrical portion extends from the outer periphery of the flange to the flange;
le rebord s'étend radialement entre la partie cylindrique et l'anneau de freinage ; et  the rim extends radially between the cylindrical portion and the braking ring; and
la périphérie externe du rebord est un polygone dont les sommets sont arrondis. Ainsi, l'invention permet d'améliorer la tenue mécanique de la liaison entre le bol et l'anneau de freinage. the outer periphery of the rim is a polygon whose vertices are rounded. Thus, the invention makes it possible to improve the mechanical strength of the connection between the bowl and the braking ring.
Selon une caractéristique particulière, la partie cylindrique comporte au moins un évidement.  According to a particular characteristic, the cylindrical portion comprises at least one recess.
Cet évidement permet de réduire la masse du bol central et par conséquent celle du disque de frein.  This recess reduces the mass of the central bowl and therefore that of the brake disc.
Selon une caractéristique particulière, l'anneau de freinage est surmoulé sur le rebord.  According to a particular characteristic, the braking ring is overmolded on the rim.
Selon une caractéristique particulière, le flasque comporte une pluralité d'alésages.  According to a particular characteristic, the flange comprises a plurality of bores.
Ainsi, il est possible de fixer le disque de frein à un moyeu de roue, par exemple au moyen d'écrous.  Thus, it is possible to fix the brake disc to a wheel hub, for example by means of nuts.
Selon une caractéristique particulière, le flasque comporte au moins un ergot de centrage.  According to a particular characteristic, the flange comprises at least one centering pin.
Cet ergot de centrage permet de facilite le positionnement correct du disque de frein par rapport à un moyeu de roue.  This centering pin facilitates the correct positioning of the brake disc relative to a wheel hub.
Selon un mode particulier de réalisation, le flasque mentionné plus haut comporte en son centre un évidement circulaire.  According to a particular embodiment, the flange mentioned above comprises in its center a circular recess.
Cet évidement permet de faciliter le centrage du disque de frein sur un roulement de moyeu de roue.  This recess facilitates the centering of the brake disc on a wheel hub bearing.
Selon un autre mode particulier de réalisation, ce flasque comporte en son centre une portion emboutie s'étendant dans la direction opposée à l'anneau de freinage.  According to another particular embodiment, this flange comprises in its center a stamped portion extending in the opposite direction to the braking ring.
Cette portion emboutie permet de protéger de façon étanche un roulement du moyeu de roue sur lequel le disque est destiné à être fixé.  This stamped portion is used to seal a bearing of the wheel hub on which the disk is intended to be fixed.
Selon une caractéristique particulière, le bol central est réalisé par emboutissage d'une feuille en acier ou en inox.  According to a particular characteristic, the central bowl is made by stamping a sheet of steel or stainless steel.
Selon une caractéristique particulière, cette feuille a une épaisseur comprise entre un et quatre millimètres.  According to a particular characteristic, this sheet has a thickness of between one and four millimeters.
Ainsi la masse du bol et donc celle du disque est réduite.  Thus the mass of the bowl and therefore that of the disc is reduced.
Dans le même but, l'invention a également pour objet un véhicule automobile comportant au moins un tel disque de frein.  For the same purpose, the invention also relates to a motor vehicle comprising at least one such brake disc.
L'invention sera mieux comprise et d'autres aspects et avantages apparaîtront plus clairement à la lecture de la description qui suit de modes particuliers de réalisation, donnés à titre d'exemples nullement limitatifs et en référence aux dessins qui l'accompagnent, dans lesquels : - la figure 1 A est une vue en perspective d'un premier mode particulier de réalisation d'un disque de frein conforme à l'invention ; The invention will be better understood and other aspects and advantages will appear more clearly on reading the following description of particular embodiments, given by way of non-limiting examples and with reference to the accompanying drawings, in which: : FIG. 1A is a perspective view of a first particular embodiment of a brake disk according to the invention;
- la figure 1 B est une vue en coupe d'un disque de frein suivant ce premier mode particulier de réalisation ;  - Figure 1 B is a sectional view of a brake disc according to this first particular embodiment;
- la figure 1 C est une vue en perspective d'un bol central d'un disque de frein suivant ce même premier mode particulier de réalisation ;  - Figure 1C is a perspective view of a central bowl of a brake disc according to this same first embodiment;
- la figure 2A est une vue en perspective d'un second mode particulier de réalisation d'un disque de frein conforme à l'invention ;  - Figure 2A is a perspective view of a second particular embodiment of a brake disc according to the invention;
- la figure 2B est une vue en coupe d'un disque de frein suivant ce second mode particulier de réalisation ;  - Figure 2B is a sectional view of a brake disc according to this second particular embodiment;
- la figure 2C est une vue en perspective d'un bol central d'un disque de frein suivant ce même second mode particulier de réalisation.  - Figure 2C is a perspective view of a central bowl of a brake disc according to the same second embodiment.
Les figures 1 A, 1 B et 1 C montrent des vues d'un disque de frein 1 d'un véhicule automobile, dans un premier mode particulier de réalisation de l'invention.  Figures 1A, 1B and 1C show views of a brake disc 1 of a motor vehicle, in a first particular embodiment of the invention.
Le disque de frein 1 est destiné à être fixé sur un moyeu de roue et participe au freinage de cette roue. Ce disque de frein 1 comporte un anneau de freinage 1 1 et un bol central 12.  The brake disc 1 is intended to be fixed on a wheel hub and contributes to the braking of this wheel. This brake disk 1 comprises a braking ring 11 and a central bowl 12.
L'anneau de freinage 1 1 reçoit les efforts de freinage du véhicule. De façon classique, ces efforts de freinage sont appliqués par serrage de plaquettes de frein de part et d'autre de cet anneau de freinage 1 1 . Le frottement des plaquettes de frein contre l'anneau de freinage 1 1 transforme l'énergie mécanique de rotation du disque 1 en une énergie calorifique et permet de freiner la roue du véhicule.  The brake ring 1 1 receives the braking forces of the vehicle. In a conventional manner, these braking forces are applied by clamping brake pads on either side of this braking ring January 1. The friction of the brake pads against the brake ring 1 1 converts the mechanical energy of rotation of the disc 1 into heat energy and brakes the wheel of the vehicle.
L'anneau de freinage 1 1 est par exemple réalisé en fonte. En variante, d'autres matériaux adaptés au freinage d'un véhicule peuvent être utilisés pour la réalisation de l'anneau de freinage 1 1 .  The brake ring 1 1 is for example made of cast iron. Alternatively, other materials adapted to the braking of a vehicle can be used for the realization of the brake ring January 1.
Le bol central 12 est destiné à être fixé à un moyeu de roue du véhicule.  The central bowl 12 is intended to be fixed to a wheel hub of the vehicle.
Conformément à la présente invention, ce bol 12 est formé d'un flasque circulaire 122, d'une partie cylindrique 123 et d'un rebord 127.  According to the present invention, this bowl 12 is formed of a circular flange 122, a cylindrical portion 123 and a flange 127.
Le flasque circulaire 122 comporte en son centre un évidement circulaire 124. L'évidement circulaire 124 permet de faciliter le centrage du disque de frein 1 sur un roulement de moyeu de roue. The circular flange 122 has in its center a circular recess 124. The circular recess 124 facilitates the centering of the brake disc 1 on a wheel hub bearing.
Ce flasque 122 comporte également des alésages 125 et au moins un ergot de centrage 126, disposés autour de l'évidement circulaire 124. Par exemple, le flasque 122 peut comporter quatre alésages 125 et deux ergots de centrage 126.  This flange 122 also comprises bores 125 and at least one centering lug 126, arranged around the circular recess 124. For example, the flange 122 may comprise four bores 125 and two centering lugs 126.
Les alésages 125 sont destinés à venir en regard d'alésages réalisés sur le moyeu de roue sur lequel le disque de frein 1 peut être fixé par des écrous. Cette fixation est réalisée en positionnant ces écrous au travers des alésages 125 du disque de frein 1 et en vissant les écrous dans les alésages du moyeu de roue.  The bores 125 are intended to come opposite bores made on the wheel hub on which the brake disc 1 can be fixed by nuts. This fixing is performed by positioning these nuts through the bores 125 of the brake disc 1 and screwing the nuts in the bores of the wheel hub.
Comme le montrent les figures 1 A, 1 B et 1 C, chaque ergot de centrage 126 s'étend axialement dans la direction de l'anneau de freinage 1 1 et est destiné à coopérer avec un alésage du moyeu de roue. Chaque ergot 126 permet ainsi de faciliter le positionnement correct du disque de frein 1 par rapport au moyeu de roue.  As shown in Figures 1A, 1B and 1C, each centering pin 126 extends axially in the direction of the brake ring January 1 and is intended to cooperate with a bore of the wheel hub. Each lug 126 thus facilitates the correct positioning of the brake disc 1 relative to the wheel hub.
La partie cylindrique 123 s'étend entre la périphérie externe du flasque circulaire 122 et le rebord 127.  The cylindrical portion 123 extends between the outer periphery of the circular flange 122 and the flange 127.
Comme le montre la figure 1 B, le rebord 127 s'étend radialement entre la partie cylindrique 123 et l'anneau de freinage 1 1 .  As shown in Figure 1 B, the flange 127 extends radially between the cylindrical portion 123 and the brake ring January 1.
L'anneau de freinage 1 1 est lié au bol 12 par surmoulage sur le rebord 127. On entend par surmoulage qu'une partie du bol central 12 est noyée dans la matière de l'anneau de freinage 1 1 .  The brake ring 1 1 is connected to the bowl 12 by overmolding on the flange 127. Overmolding means that a portion of the central bowl 12 is embedded in the material of the brake ring January 1.
La périphérie externe du rebord 127 visible sur la figure 1 C, de forme générale circulaire, est un polygone dont les sommets sont arrondis.  The outer periphery of the flange 127 visible in Figure 1 C, of circular general shape, is a polygon whose vertices are rounded.
La forme de la périphérie du rebord 127 permet, à la différence d'une forme totalement circulaire, de créer des variations du rayon de la périphérie du rebord 127 qui permettent de bloquer la rotation du bol central 12 par rapport à l'anneau de freinage 1 1 .  The shape of the periphery of the rim 127 makes it possible, unlike a totally circular shape, to create variations in the radius of the periphery of the rim 127 which make it possible to block the rotation of the central bowl 12 with respect to the braking ring 1 1.
Les ondulations périphériques du rebord 127 permettent d'améliorer la liaison du bol 12 avec l'anneau de freinage 1 1 , en particulier lors des freinages. On évite ainsi une rupture de la liaison surmoulée entre l'anneau de freinage 1 1 et le bol 12 lors d'un freinage.  The peripheral ripples of the rim 127 make it possible to improve the connection of the bowl 12 with the braking ring 11, in particular during braking. This avoids a rupture of the overmolded connection between the brake ring January 1 and the bowl 12 during braking.
Des évidements 121 sont réalisés dans la partie cylindrique 123 pour réduire la masse du bol 12 et donc du disque de frein 1 .  Recesses 121 are made in the cylindrical portion 123 to reduce the mass of the bowl 12 and thus the brake disc 1.
Les évidements 121 ne s'étendent pas jusqu'au rebord 127. Cela permet d'améliorer la tenue mécanique du bol 12, en particulier lors d'un freinage. En outre, cela permet de minimiser le risque de « mise en parapluie » de l'anneau de freinage 1 1 . Par « mise en parapluie », on entend que les extrémités de l'anneau 1 1 se replient (comme un parapluie), ce qui nuit au bon fonctionnement du disque de frein en créant un frottement résiduel entre l'anneau de freinage et les plaquettes de frein. The recesses 121 do not extend to the rim 127. This makes it possible to improve the mechanical strength of the bowl 12, in particular during a braking. In addition, this makes it possible to minimize the risk of "putting in umbrella" of the brake ring 1 1. By "umbrella" is meant that the ends of the ring 1 1 fold (like an umbrella), which affects the proper functioning of the brake disc by creating a residual friction between the brake ring and the pads of brake.
La partie cylindrique 123 peut avoir un diamètre intérieur correspondant au diamètre extérieur du moyeu de roue. Ainsi, lors de la mise en place du disque de frein 1 , la partie cylindrique 123 participe au positionnement correct du disque de frein 1 par rapport au moyeu de roue.  The cylindrical portion 123 may have an inner diameter corresponding to the outer diameter of the wheel hub. Thus, during the introduction of the brake disc 1, the cylindrical portion 123 participates in the correct positioning of the brake disc 1 relative to the wheel hub.
Le bol 12 peut par exemple être obtenu par emboutissage d'une feuille d'un matériau tel que de l'acier ou de l'inox. Par exemple, une feuille en acier, d'épaisseur comprise entre 1 et 4 millimètres (mm), est bien adaptée à la réalisation du bol 12 et permet de réduire la masse du disque de frein 1 .  The bowl 12 may for example be obtained by stamping a sheet of a material such as steel or stainless steel. For example, a steel sheet, having a thickness of between 1 and 4 millimeters (mm), is well adapted to the production of the bowl 12 and makes it possible to reduce the mass of the brake disc 1.
Les figures 2A, 2B et 2C montrent des vues d'un disque de frein 2 d'un véhicule automobile, dans un second mode particulier de réalisation de l'invention.  FIGS. 2A, 2B and 2C show views of a brake disc 2 of a motor vehicle, in a second particular embodiment of the invention.
Comme dans le premier mode de réalisation, le disque de frein 2 est destiné à être fixé sur un moyeu de roue et participe au freinage de cette roue. Ce disque de frein 2 comporte un anneau de freinage 21 et un bol central 22.  As in the first embodiment, the brake disc 2 is intended to be fixed on a wheel hub and participates in the braking of this wheel. This brake disc 2 comprises a braking ring 21 and a central bowl 22.
L'anneau de freinage 21 reçoit les efforts de freinage du véhicule. De façon classique, ces efforts de freinage sont appliqués par serrage de plaquettes de frein de part et d'autre de cet anneau de freinage 21 .  The braking ring 21 receives the braking forces of the vehicle. In a conventional manner, these braking forces are applied by clamping brake pads on either side of this braking ring 21.
L'anneau de freinage 21 est par exemple réalisé en fonte. En variante, d'autres matériaux adaptés au freinage d'un véhicule peuvent être utilisés pour la réalisation de l'anneau de freinage 21 .  The brake ring 21 is for example made of cast iron. Alternatively, other materials adapted to the braking of a vehicle can be used for the realization of the braking ring 21.
Le bol central 22 est destiné à être fixé à un moyeu de roue du véhicule.  The central bowl 22 is intended to be fixed to a wheel hub of the vehicle.
Ce bol 22 est formé d'un flasque circulaire 222, d'une partie cylindrique 223 et d'un rebord 227.  This bowl 22 is formed of a circular flange 222, a cylindrical portion 223 and a flange 227.
Dans ce second mode particulier de réalisation, le flasque circulaire 222 comporte en son centre une portion emboutie 224. La portion emboutie 224 permet le positionnement d'une jante de roue sur le disque de frein 2 et protège de façon étanche un roulement du moyeu de roue.  In this second particular embodiment, the circular flange 222 comprises at its center a stamped portion 224. The stamped portion 224 allows the positioning of a wheel rim on the brake disc 2 and sealingly protects a bearing of the hub. wheel.
Ce flasque 222 comporte également des alésages 225 et au moins un ergot de centrage 226, disposés autour de l'évidement circulaire 224. Par exemple, le flasque 222 peut comporter quatre alésages 225 et deux ergots de centrage 226. This flange 222 also has bores 225 and at least one centering pin 226, arranged around the circular recess 224. By for example, the flange 222 may comprise four bores 225 and two centering pins 226.
Les alésages 225 sont destinés à venir en regard d'alésages réalisés sur le moyeu de roue sur lequel le disque de frein 2 peut être fixé par des écrous. Cette fixation est réalisée en positionnant ces écrous au travers des alésages 225 du disque de frein 2 et en vissant les écrous dans les alésages du moyeu de roue.  The bores 225 are intended to come opposite bores made on the wheel hub on which the brake disc 2 can be fixed by nuts. This fixing is performed by positioning these nuts through the bores 225 of the brake disc 2 and screwing the nuts in the bores of the wheel hub.
Comme le montrent les figures 2A, 2B et 2C, chaque ergot de centrage 226 s'étend axialement dans la direction de l'anneau de freinage 21 et est destiné à coopérer avec un alésage du moyeu de roue. Chaque ergot 226 permet ainsi de faciliter le positionnement correct du disque de frein 2 par rapport au moyeu de roue.  As shown in Figures 2A, 2B and 2C, each centering pin 226 extends axially in the direction of the brake ring 21 and is intended to cooperate with a bore of the wheel hub. Each lug 226 thus facilitates the correct positioning of the brake disk 2 relative to the wheel hub.
La partie cylindrique 223 s'étend entre la périphérie externe du flasque circulaire 222 et le rebord 227.  The cylindrical portion 223 extends between the outer periphery of the circular flange 222 and the flange 227.
Comme le montre la figure 2B, le rebord 227 s'étend radialement entre la partie cylindrique 223 et l'anneau de freinage 21 .  As shown in FIG. 2B, the flange 227 extends radially between the cylindrical portion 223 and the braking ring 21.
L'anneau de freinage 21 est lié au bol 22 par surmoulage sur le rebord The brake ring 21 is connected to the bowl 22 by overmolding on the rim
227. 227.
La périphérie externe du rebord 227 visible sur la figure 2C, de forme générale circulaire, est un polygone dont les sommets sont arrondis.  The outer periphery of the flange 227 visible in FIG. 2C, of circular general shape, is a polygon whose vertices are rounded.
Cette forme présente les avantages décrits plus haut, en lien avec le premier mode particulier de réalisation.  This form has the advantages described above, in connection with the first particular embodiment.
Les ondulations périphériques du rebord 227 permettent d'améliorer la liaison du bol 22 avec l'anneau de freinage 21 , en particulier lors des freinages. On évite ainsi une rupture de la liaison surmoulée entre l'anneau de freinage 21 et le bol 22 lors d'un freinage.  The peripheral ripples of the rim 227 make it possible to improve the connection of the bowl 22 with the braking ring 21, in particular during braking. This avoids a rupture of the overmolded connection between the brake ring 21 and the bowl 22 during braking.
Des évidements 221 sont réalisés dans la partie cylindrique 223 pour réduire la masse du bol 22 et donc du disque de frein 2.  Recesses 221 are made in the cylindrical portion 223 to reduce the mass of the bowl 22 and thus the brake disc 2.
Les évidements 221 ne s'étendent pas jusqu'au rebord 227. Cela permet d'améliorer la tenue mécanique du bol 22, en particulier lors d'un freinage. En outre, comme dans le premier mode de réalisation, le risque de mise en parapluie de l'anneau de freinage 21 est ainsi minimisé.  The recesses 221 do not extend to the rim 227. This improves the mechanical strength of the bowl 22, particularly during braking. In addition, as in the first embodiment, the risk of umbrella setting of the brake ring 21 is thus minimized.
La partie cylindrique 223 peut avoir un diamètre intérieur correspondant au diamètre extérieur du moyeu de roue. Ainsi, lors de la mise en place du disque de frein 2, la partie cylindrique 223 participe au positionnement correct du disque de frein 2 par rapport au moyeu de roue. Le bol 22 peut par exemple être obtenu par emboutissage d'une feuille d'un matériau tel que de l'acier ou de l'inox. Par exemple, une feuille en acier, d'épaisseur comprise entre 1 et 4 millimètres (mm), est bien adaptée à la réalisation du bol 22 et permet de réduire la masse du disque de frein 2. The cylindrical portion 223 may have an inner diameter corresponding to the outer diameter of the wheel hub. Thus, during the introduction of the brake disc 2, the cylindrical portion 223 participates in the correct positioning of the brake disc 2 relative to the wheel hub. The bowl 22 may for example be obtained by stamping a sheet of a material such as steel or stainless steel. For example, a steel sheet, having a thickness of between 1 and 4 millimeters (mm), is well adapted to the production of the bowl 22 and makes it possible to reduce the mass of the brake disc 2.
Ainsi, un disque de frein conforme à l'invention présente une faible masse et la tenue mécanique de la liaison entre le bol et l'anneau de freinage est améliorée, en particulier lors du freinage du véhicule. L'invention permet en outre de faciliter le positionnement du disque de frein lors de son montage sur un moyeu de roue.  Thus, a brake disk according to the invention has a low mass and the mechanical strength of the connection between the bowl and the brake ring is improved, in particular during braking of the vehicle. The invention further facilitates the positioning of the brake disc when mounted on a wheel hub.

Claims

REVENDICATIONS
1 . Disque de frein (1 ; 2) automobile comportant : 1. Automotive brake disc (1; 2) comprising:
un anneau de freinage (1 1 ; 21 ) ;  a brake ring (1 1; 21);
- un bol central (12 ; 22), solidaire dudit anneau de freinage (1 1 ; - A central bowl (12; 22) integral with said braking ring (1 1;
21 ) ; 21);
dans lequel :  in which :
ledit bol central (12 ; 22) comporte un flasque circulaire (122 ; 222), une partie cylindrique (123 ; 223) et un rebord (127 ; 227) ;  said central bowl (12; 22) has a circular flange (122; 222), a cylindrical portion (123; 223) and a flange (127; 227);
- ladite partie cylindrique (123 ; 223) s'étend de la périphérie externe dudit flasque (122 ; 222) audit rebord (127 ; 227) ;  said cylindrical portion (123; 223) extends from the outer periphery of said flange (122; 222) to said flange (127; 227);
ledit rebord (127 ; 227) s'étend radialement entre ladite partie cylindrique (123 ; 223) et ledit anneau de freinage (1 1 ; 21 ) ; et  said flange (127; 227) extends radially between said cylindrical portion (123; 223) and said braking ring (11; 21); and
la périphérie externe dudit rebord (127 ; 227) est un polygone dont les sommets sont arrondis,  the outer periphery of said flange (127; 227) is a polygon whose vertices are rounded,
ledit disque de frein étant caractérisé en ce que ladite partie cylindrique (123 ; 223) comporte au moins un évidement (121 ; 221 ).  said brake disk being characterized in that said cylindrical portion (123; 223) has at least one recess (121; 221).
2. Disque de frein (1 ; 2) selon la revendication 1 , caractérisé en ce que ledit anneau de freinage (1 1 ; 21 ) est surmoulé sur ledit rebord (127 ; 227).  2. Brake disc (1; 2) according to claim 1, characterized in that said braking ring (1 1; 21) is overmolded on said flange (127; 227).
3. Disque de frein selon l'une quelconque des revendications précédentes, caractérisé en ce que ledit flasque (122 ; 222) comporte une pluralité d'alésages (125 ; 225).  3. Brake disk according to any one of the preceding claims, characterized in that said flange (122; 222) comprises a plurality of bores (125; 225).
4. Disque de frein selon l'une quelconque des revendications précédentes, caractérisé en ce que ledit flasque (122 ; 222) comporte au moins un ergot de centrage (126 ; 226).  4. Brake disc according to any one of the preceding claims, characterized in that said flange (122; 222) comprises at least one centering pin (126; 226).
5. Disque de frein (1 ) selon l'une quelconque des revendications précédentes, caractérisé en ce que ledit flasque (122) comporte en son centre un évidement circulaire (124).  5. Brake disk (1) according to any one of the preceding claims, characterized in that said flange (122) has at its center a circular recess (124).
6. Disque de frein (2) selon l'une quelconque des revendications 1 à Brake disk (2) according to one of claims 1 to
4, caractérisé en ce que ledit flasque (222) comporte en son centre une portion emboutie (224) s'étendant dans la direction opposée audit anneau de freinage (21 ). 4, characterized in that said flange (222) comprises at its center a stamped portion (224) extending in the opposite direction to said braking ring (21).
7. Disque de frein selon l'une quelconque des revendications précédentes, caractérisé en ce que ledit bol (12 ; 22) est réalisé par emboutissage d'une feuille en acier ou en inox. 7. Brake disk according to any one of the preceding claims, characterized in that said bowl (12; 22) is made by stamping a sheet of steel or stainless steel.
8. Disque de frein selon la revendication 7, caractérisé en ce que ladite feuille a une épaisseur comprise entre un et quatre millimètres. 8. Brake disk according to claim 7, characterized in that said sheet has a thickness of between one and four millimeters.
9. Véhicule automobile caractérisé en ce qu'il comporte au moins un disque de frein (1 ; 2) selon l'une quelconque des revendications précédentes.  9. Motor vehicle characterized in that it comprises at least one brake disc (1; 2) according to any one of the preceding claims.
PCT/FR2014/052045 2013-09-18 2014-08-06 Motor vehicle disc brake WO2015040296A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP14755886.0A EP3047172A1 (en) 2013-09-18 2014-08-06 Motor vehicle disc brake
CN201480051562.7A CN105556156B (en) 2013-09-18 2014-08-06 The brake disc of motor vehicles

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1358966 2013-09-18
FR1358966A FR3010756B1 (en) 2013-09-18 2013-09-18 BRAKE DISC OF A MOTOR VEHICLE

Publications (1)

Publication Number Publication Date
WO2015040296A1 true WO2015040296A1 (en) 2015-03-26

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ID=49876815

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Application Number Title Priority Date Filing Date
PCT/FR2014/052045 WO2015040296A1 (en) 2013-09-18 2014-08-06 Motor vehicle disc brake

Country Status (4)

Country Link
EP (1) EP3047172A1 (en)
CN (1) CN105556156B (en)
FR (1) FR3010756B1 (en)
WO (1) WO2015040296A1 (en)

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FR3115339B1 (en) 2020-10-16 2022-12-02 Psa Automobiles Sa BRAKING DEVICE COMPRISING A STAMPED METAL BOWL AND VEHICLE COMPRISING SUCH A BRAKING DEVICE

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FR3116577A1 (en) * 2020-11-26 2022-05-27 Psa Automobiles Sa BRAKING DEVICE COMPRISING A BI-MATERIAL DISC AND VEHICLE COMPRISING SUCH A BRAKING DEVICE
WO2022112668A1 (en) * 2020-11-26 2022-06-02 Psa Automobiles Sa Braking device comprising a bi-material disc and vehicle comprising such a braking device

Also Published As

Publication number Publication date
FR3010756B1 (en) 2017-01-13
FR3010756A1 (en) 2015-03-20
CN105556156B (en) 2018-12-04
CN105556156A (en) 2016-05-04
EP3047172A1 (en) 2016-07-27

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