DE3941876A1 - Vehicle wheel with brake disc - makes use of fins to improve cooling - Google Patents

Vehicle wheel with brake disc - makes use of fins to improve cooling

Info

Publication number
DE3941876A1
DE3941876A1 DE19893941876 DE3941876A DE3941876A1 DE 3941876 A1 DE3941876 A1 DE 3941876A1 DE 19893941876 DE19893941876 DE 19893941876 DE 3941876 A DE3941876 A DE 3941876A DE 3941876 A1 DE3941876 A1 DE 3941876A1
Authority
DE
Germany
Prior art keywords
brake disc
brake
fins
wheel
shaped section
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Withdrawn
Application number
DE19893941876
Other languages
German (de)
Inventor
Thomas Lorenz
Stephan Ertlmaier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke AG
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 Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Priority to DE19893941876 priority Critical patent/DE3941876A1/en
Publication of DE3941876A1 publication Critical patent/DE3941876A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B21/00—Rims
    • B60B21/08—Rims characterised by having braking surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
    • B60T1/02—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels
    • B60T1/06—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels
    • B60T1/065—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels employing disc
    • 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
    • F16D2065/1304—Structure
    • F16D2065/1332—Structure external ribs, e.g. for cooling or reinforcement

Landscapes

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

Abstract

The vehicle wheel is fitted with a brake disc. It has a drum-shaped section joined to the wheel (6), with a friction ring (3) arranged on the edge of the section. The drum-shaped section (2) of the brake disc (1) is provided on its outer side with cooling fins (9). These fins are shaped to avoid contact with the brake saddle or caliper (4). USE/ADVANTAGE - Improved method of cooling the brake disc on the rear wheel of a passenger car.

Description

Die Erfindung bezieht sich auf ein Fahrzeugrad mit einer Bremsscheibe, die einen mit dem Rad verbundenen topfförmigen Abschnitt aufweist, an dessen Topfrand ein Reibring angeordnet ist.The invention relates to a vehicle wheel with a Brake disc, one connected to the wheel Has pot-shaped section, at the edge of the pot Friction ring is arranged.

Derartige Bremsscheiben sind bekannt. Der topfförmige Abschnitt dient dazu, den Reibring vom Rad weg nach innen zu verlegen, damit der Bremssattel den Reibring beidseitig übergreifen kann. Zugleich wird die Innenseite des topfförmigen Abschnitts der Bremsscheibe z. B. am Hinterrad eines Pkw als Reibfläche für die Bremsbacken der Handbremse verwendet.Such brake discs are known. The pot-shaped Section serves to move the friction ring away from the wheel to be laid on the inside so that the brake caliper holds the friction ring can overlap on both sides. At the same time, the Inside of the cup-shaped section of the brake disc e.g. B. on the rear wheel of a car as a friction surface for the Handbrake brake shoes used.

Beim Bremsen können am Reibring der Bremsscheibe hohe thermische Belastungen auftreten. Diese können zur Verformung des Reibrings durch die angreifenden Bremsbeläge führen. Da die Wärme des Reibrings über den auch als Bremsscheibentopf bezeichneten, topfförmigen Abschnitt der Bremsscheibe in das Rad abgeleitet wird, führt eine hohe Reibringtemperatur zugleich zu einer hohen Temperatur des Rades und kann damit zu einer Schädigung der Reifen führen. Dies gilt insbesondere für Alu-Felgen aufgrund ihrer hohen Wärmeleitfähigkeit.When braking, the friction ring on the brake disc can be high thermal loads occur. These can be used Deformation of the friction ring due to the attacking Lead brake pads. Since the heat of the friction ring over the also known as a brake disk pot, cup-shaped Section of the brake disc is derived into the wheel a high friction ring temperature leads to one high temperature of the wheel and can lead to a Damage to the tires. This applies in particular to Aluminum rims due to their high thermal conductivity.

Es ist bekannt, den Reibring hohl auszubilden, um ihn durch Innenbelüftung zu kühlen. Bei hohen Fahrleistungen und/oder großem Fahrzeuggewicht ist diese Art der Kühlung jedoch unzureichend.It is known to hollow the friction ring around it to be cooled by internal ventilation. At high mileage and / or large vehicle weight is this type of Insufficient cooling.

Aufgabe der Erfindung ist es, die Kühlung einer Bremsscheibe wesentlich zu verbessern.The object of the invention is to cool a Brake disc to improve significantly.

Dies wird erfindungsgemäß dadurch erreicht, daß der topfförmige Abschnitt der Bremsscheibe an seiner Außenseite mit Kühlrippen versehen wird.This is achieved in that the cup-shaped section of the brake disc on its Is provided on the outside with cooling fins.

Durch die Kühlrippen wird die Außenoberfläche des topfförmigen Abschnitts der Bremsscheibe wesentlich vergrößert, so daß die vom Reibring kommende Wärme über die Kühlrippen rasch in die umgebende Luft abgeführt wird.The outer surface of the Pot-shaped section of the brake disc is essential enlarged so that the heat coming from the friction ring over the cooling fins are quickly discharged into the surrounding air becomes.

Die Kühlrippen erstrecken sich vorzugsweise um den Außenumfang des Bremsscheibentopfes. Damit wird die Festigkeit des Topfes wesentlich erhöht, so daß der Topf dünner ausgebildet werden kann. Dies hat einmal zur Folge, daß die Wärme, die vom Reibring an das Rad abgegeben wird, noch geringer wird. Zugleich wird dadurch eine wesentliche Reduzierung des Gewichts der Bremsscheibe und damit eine Verringerung ungefederter Massen am Rad erzielt. Auch ist die Materialkostenersparnis durch die dünnere Ausbildung des Topfes nicht unerheblich.The cooling fins preferably extend around the Outer circumference of the brake disc pot. With that the Strength of the pot increased significantly, so that the pot can be made thinner. This has one time Consequence that the heat from the friction ring to the wheel delivered, becomes even lower. At the same time thereby a substantial reduction in the weight of the Brake disc and thus a reduction in unsprung Masses achieved on the bike. That too is Material cost savings through the thinner design of the Pot not insignificant.

Statt sich in Umfangsrichtung erstreckenden Kühlrippen ist es auch möglich, die Kühlrippen schräg oder axial nach Art von Lüfterschaufeln an dem Bremsscheibentopf anzuordnen. Durch höhere Luftströmungsturbulenzen wird damit eine noch bessere Wärmeabfuhr erreicht. Allerdings ist der Guß der Bremsscheibe dann schwieriger. Instead of cooling fins extending in the circumferential direction it is also possible to slant the cooling fins or axially in the manner of fan blades on the brake disc chamber to arrange. Due to higher air flow turbulence thus achieving an even better heat dissipation. Indeed then casting the brake disc is more difficult.  

Je größer die Zahl und die Höhe der Kühlrippen und damit die Oberfläche des Außenumfangs des Bremsscheibentopfes ist, um so höher ist freilich die Abkühlung. Allerdings werden auch hier von der Herstellung, d. h. dem Guß der Bremsscheibe her Grenzen gesetzt.The larger the number and the height of the cooling fins and thus the surface of the outer circumference of the brake disc cup is, the higher is the cooling. Indeed are also here from the production, d. H. the casting of the Brake disc set limits.

Nachstehend ist eine Ausführungsform der Erfindung anhand der Zeichnung näher erläutert, deren einzige Figur eine zum Teil geschnittene Ansicht einer Bremsscheibe an einem Rad zeigt.The following is an embodiment of the invention explained in more detail with reference to the drawing, the only one Figure is a partially sectioned view of a Brake disc on a wheel shows.

Danach besteht eine Bremsscheibe 1 aus einem topfförmigen Abschnitt 2, an dessen innen liegendem Topfrand ein Reibring 3 angeordnet ist. Der Reibring 3 wird vom Bremssattel der Scheibenbremse übergriffen, dessen äußerer Teil 4 in der Zeichnung gestrichelt angedeutet ist.Thereafter, a brake disc 1 consists of a cup-shaped section 2 , on the inner edge of which a friction ring 3 is arranged. The friction ring 3 is overlapped by the brake caliper of the disc brake, the outer part 4 of which is indicated by dashed lines in the drawing.

Mit seinem Boden bzw. dem radial nach innen gerichteten Ringabschnitt 5 ist der topfförmige Abschnitt 2 der Bremsscheibe 1 mit einem Scheibenrad 6 verbunden, und zwar durch nicht dargestellte Schrauben, die den Ringabschnitt 5 durchragen und mit der in der Zeichnung gestrichelt angedeuteten Mitnehmer-Flanschnabe 7 verschraubt sind.With its bottom or the radially inwardly directed ring section 5 , the cup-shaped section 2 of the brake disk 1 is connected to a disk wheel 6 , namely by screws, not shown, which protrude through the ring section 5 and with the driver flange hub 7 , which is indicated in dashed lines in the drawing are screwed.

Um den Außenumfang des zylindrischen Abschnitts 8 des topfförmigen Abschnitts 2 der Bremsscheibe 1 erstrecken sich Kühlrippen 9 radial nach außen. Die Hohe der Rippen 9 nimmt dabei in axialer Richtung von außen nach innen ab, um den erforderlichen Freigang gegenüber dem äußeren Bremssattelteil 4 zu gewährleisten. Cooling fins 9 extend radially outward around the outer circumference of the cylindrical section 8 of the cup-shaped section 2 of the brake disk 1 . The height of the ribs 9 decreases in the axial direction from the outside inwards in order to ensure the required clearance with respect to the outer brake caliper part 4 .

Am Innenumfang weist der zylindrische Abschnitt 8 des Bremsscheibentopfes 2 eine ringförmige Reibflache 10 auf, an der die nicht dargestellten Bremsbacken einer Handbremse angreifen.On the inner circumference, the cylindrical section 8 of the brake disk cup 2 has an annular friction surface 10 , on which the brake shoes, not shown, of a hand brake act.

Claims (2)

1. Fahrzeugrad mit einer Bremsscheibe, die einen mit dem Rad verbundenen, topfförmigen Abschnitt aufweist, an dessen Topfrand ein Reibring angeordnet ist, dadurch gekennzeichnet, daß der topfförmige Abschnitt (2) der Bremsscheibe (1) an seiner Außenseite mit Kühlrippen (9) versehen ist.1. Vehicle wheel with a brake disc, which has a cup-shaped section connected to the wheel, on the cup edge of which a friction ring is arranged, characterized in that the cup-shaped section ( 2 ) of the brake disc ( 1 ) is provided on its outside with cooling ribs ( 9 ) is. 2. Rad nach Anspruch 1, dadurch gekennzeichnet, daß die Kühlrippen (9) in Umfangsrichtung des topfförmigen Abschnitts (2) verlaufen.2. Wheel according to claim 1, characterized in that the cooling ribs ( 9 ) extend in the circumferential direction of the cup-shaped section ( 2 ).
DE19893941876 1989-12-19 1989-12-19 Vehicle wheel with brake disc - makes use of fins to improve cooling Withdrawn DE3941876A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19893941876 DE3941876A1 (en) 1989-12-19 1989-12-19 Vehicle wheel with brake disc - makes use of fins to improve cooling

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19893941876 DE3941876A1 (en) 1989-12-19 1989-12-19 Vehicle wheel with brake disc - makes use of fins to improve cooling

Publications (1)

Publication Number Publication Date
DE3941876A1 true DE3941876A1 (en) 1991-06-20

Family

ID=6395780

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19893941876 Withdrawn DE3941876A1 (en) 1989-12-19 1989-12-19 Vehicle wheel with brake disc - makes use of fins to improve cooling

Country Status (1)

Country Link
DE (1) DE3941876A1 (en)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE608817C (en) * 1935-02-01 Fischer Ag Georg Cooling device for the brake drum of a road vehicle
US1993430A (en) * 1932-07-30 1935-03-05 Edgewater Steel Wheel
US2655236A (en) * 1949-05-25 1953-10-13 American Steel Foundries Disk brake
DE1137329B (en) * 1959-05-30 1962-09-27 Porsche Kg Disc brakes for vehicles, in particular motor vehicles
US3059730A (en) * 1958-02-10 1962-10-23 Borg Warner Disc brake
DE1211041B (en) * 1963-11-26 1966-02-17 Teves Kg Alfred Brake disc with a pot-shaped hub
FR2072781A5 (en) * 1969-12-01 1971-09-24 Audi Ag
DE2110482A1 (en) * 1971-03-05 1972-09-14 Porsche Kg Internally ventilated brake disc
DE2557649A1 (en) * 1975-12-20 1977-06-30 Schwaebische Huettenwerke Gmbh BRAKE DISC FOR DISC BRAKES
DE3120021A1 (en) * 1981-05-20 1982-12-09 Daimler-Benz Ag, 7000 Stuttgart "ARRANGEMENT FOR COOLING BRAKE AND WHEEL OF A MOTOR VEHICLE"

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE608817C (en) * 1935-02-01 Fischer Ag Georg Cooling device for the brake drum of a road vehicle
US1993430A (en) * 1932-07-30 1935-03-05 Edgewater Steel Wheel
US2655236A (en) * 1949-05-25 1953-10-13 American Steel Foundries Disk brake
US3059730A (en) * 1958-02-10 1962-10-23 Borg Warner Disc brake
DE1137329B (en) * 1959-05-30 1962-09-27 Porsche Kg Disc brakes for vehicles, in particular motor vehicles
DE1211041B (en) * 1963-11-26 1966-02-17 Teves Kg Alfred Brake disc with a pot-shaped hub
FR2072781A5 (en) * 1969-12-01 1971-09-24 Audi Ag
DE2110482A1 (en) * 1971-03-05 1972-09-14 Porsche Kg Internally ventilated brake disc
DE2557649A1 (en) * 1975-12-20 1977-06-30 Schwaebische Huettenwerke Gmbh BRAKE DISC FOR DISC BRAKES
DE3120021A1 (en) * 1981-05-20 1982-12-09 Daimler-Benz Ag, 7000 Stuttgart "ARRANGEMENT FOR COOLING BRAKE AND WHEEL OF A MOTOR VEHICLE"

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Legal Events

Date Code Title Description
OM8 Search report available as to paragraph 43 lit. 1 sentence 1 patent law
8139 Disposal/non-payment of the annual fee