SE469688B - WHEEL NAV AND BRAKE DISK DEVICE FOR HEAVY MOTOR VEHICLES - Google Patents
WHEEL NAV AND BRAKE DISK DEVICE FOR HEAVY MOTOR VEHICLESInfo
- Publication number
- SE469688B SE469688B SE9200204A SE9200204A SE469688B SE 469688 B SE469688 B SE 469688B SE 9200204 A SE9200204 A SE 9200204A SE 9200204 A SE9200204 A SE 9200204A SE 469688 B SE469688 B SE 469688B
- Authority
- SE
- Sweden
- Prior art keywords
- hub
- disc
- depressions
- brake disc
- wheel
- Prior art date
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
- F16D65/128—Discs; Drums for disc brakes characterised by means for cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B27/00—Hubs
- B60B27/001—Hubs with roller-bearings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B27/00—Hubs
- B60B27/0047—Hubs characterised by functional integration of other elements
- B60B27/0052—Hubs characterised by functional integration of other elements the element being a brake disc
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B27/00—Hubs
- B60B27/02—Hubs adapted to be rotatably arranged on axle
-
- 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
- F16D2065/13—Parts or details of discs or drums
- F16D2065/1304—Structure
- F16D2065/1328—Structure internal cavities, e.g. cooling channels
-
- 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
- F16D2065/1368—Connection interlocking with relative movement both radially and axially
-
- 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
- F16D2065/1392—Connection elements
-
- 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
- F16D2065/1392—Connection elements
- F16D2065/1396—Ancillary resilient elements, e.g. anti-rattle or retraction springs
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Braking Arrangements (AREA)
Description
15 20 25 30 35 469 688 2 motsvarande urtagningar i bromsskivans centrala öppning. 15 20 25 30 35 469 688 2 corresponding recesses in the central opening of the brake disc.
Förutom fördelen av att skivan vid upphettning kan expandera radiellt utan att kantra eller slå sig uppnås den fördelen att själva skivan uppvärms mer likformigt.In addition to the advantage that the disc can expand radially when heated without tipping or hitting, the advantage is achieved that the disc itself is heated more uniformly.
Syftet med föreliggande uppfinning är generellt att med utgångspunkt från tidigare kända formlåsande förbindelser * mellan ett hjulnav och en bromsskiva utveckla en nav- och bromsskiveanordning, som kan ersätta hittills använda trum- bromsar i den tyngsta fordonsklassen.The object of the present invention is generally to develop, on the basis of previously known form-locking connections * between a wheel hub and a brake disc, a hub and brake disc device, which can replace hitherto used drum brakes in the heaviest vehicle class.
I synnerhet är syftet att åstadkomma en formlåsande förbin- delse mellan nav och bromsskiva, genom vilken risken för sprängning av skivans nav under inverkan av termiska påkänningar elimineras.In particular, the purpose is to provide a form-locking connection between the hub and the brake disc, by which the risk of bursting of the hub of the disc under the influence of thermal stresses is eliminated.
Detta uppnås enligt uppfinningen vid en hjulnav- och broms- skiveanordning av i inledningen angivet slag genom att nämnda icke-cirkulära parti på navet är utformat med efter varandra följande upphöjningar och fördjupningar, att skivans centrala öppning är utformad med motsvarande, till navets profil anpassade upphöjningar och fördjupningar och att slitsar sträcker sig radiellt utåt från bottnen av åtminstone vissa regelbundet fördelade fördjupningar i bromsskivans centrala öppning.This is achieved according to the invention in a wheel hub and brake disc device of the type indicated in the introduction in that said non-circular portion of the hub is formed with successive elevations and depressions, that the central opening of the disc is formed with corresponding elevations adapted to the hub profile. and depressions and slits extending radially outward from the bottom of at least some regularly distributed depressions in the central opening of the brake disc.
Genom uppfinningen säkerställas att skivans radiellt inre navdel kan expandera när dess med bromsbeläggen samverkande del vid bromsning utsätts för en kraftig temperaturhöjning och därvid får en temperatur, som till åtminstone en början väsentligt överskrider temperaturen i navdelen.The invention ensures that the radially inner hub part of the disc can expand when its part cooperating with the brake linings during braking is subjected to a sharp rise in temperature and thereby obtains a temperature which at least initially substantially exceeds the temperature in the hub part.
Uppfinningen beskrives närmare under hänvisning till på bifogade ritningar visade utföringsexempel, där fig. 1 visar en delvis snittad sidovy av en hjulspindel med en nav- och bromsskiveanordning enligt uppfinningen, fig. 2 en ändvy av bromsskivan i fig. 1 och fig. 3 en schematisk ändvy av en del av navet och skivans radiellt inre del. 10 15 20 25 30 35 469 688 3 I fig. 1 betecknar 1 en ytterände av en stel framaxel till en lastbil. Axeländen uppvisar en konisk borrning 2, i vilken en spindelbult 3 är fixerad. På spindelbulten 3 är en spindelen- het 4 svängbart lagrad. Spindelenheten 4 innefattar en axel- tappenhet 5, på vilken ett hjulnav 6 är lagrat via ett unit- -lager 7. Navet 6 uppbär en bromsskiva 8 och spindelenheten 4 ett bromsok eller en aktiveringsmekanism (icke visade).The invention is described in more detail with reference to exemplary embodiments shown in the accompanying drawings, in which Fig. 1 shows a partially sectioned side view of a wheel spindle with a hub and brake disc device according to the invention, Fig. 2 an end view of the brake disc in Fig. 1 and Fig. 3 a schematic end view of a part of the hub and the radially inner part of the disc. In Fig. 1, 1 denotes an outer end of a rigid front axle of a truck. The shaft end has a conical bore 2, in which a spindle bolt 3 is fixed. A spindle unit 4 is pivotally mounted on the spindle bolt 3. The spindle unit 4 comprises a shaft pin unit 5, on which a wheel hub 6 is mounted via a unit bearing 7. The hub 6 carries a brake disc 8 and the spindle unit 4 a brake caliper or an actuating mechanism (not shown).
I stället för att, såsom hittills varit vanligast, fixera bromsskivan på navet genom att skruva fast skivan på en fläns på navet är vid utförandet enligt uppfinningen skivan 8 förbunden med navet 6 genom formlåsning. För detta ändamål är navet 6 utformat med ett centralt parti, som har ett från en jämn cirkel avvikande tvärsnitt. Närmare bestämt är partiet utformat med tätt efter varandra följande bommar 10 och spår 11, vilka är V-formiga. Bromsskivans 8 radiellt inre navdel 12 är utformad med motsvarande spår 13 och bommar 14, som passar till navets bommar 10 och spår 11.Instead of, as has hitherto been most common, fixing the brake disc on the hub by screwing the disc on a flange on the hub, in the embodiment according to the invention the disc 8 is connected to the hub 6 by form locking. For this purpose, the hub 6 is formed with a central portion, which has a cross section deviating from a smooth circle. More specifically, the portion is formed with closely spaced barriers 10 and grooves 11, which are V-shaped. The radially inner hub part 12 of the brake disc 8 is formed with corresponding grooves 13 and bars 14, which fit the hubs 10 and grooves 11 of the hub.
Såsom särskilt framgår av fig. 3 är spårens 11, 13 djup något större än bommarnas 10, 14 höjd. Spåren har en avrundad botten 15 medan bommarna har en plan ovansida 16, som anslu- ter till dess plana flanker 17. Genom detta utförande säker- ställes ytanliggning över bommarnas hela flankyta. Skivan 8 och navet 6 är så dimensionerade, att i avlastat tillstånd ett spel av 0,2-0,3 mm råder mellan samverkande flankytor 17 och i skivan och navet. I det visade utföringsexemplet upp- visar navet och skivan vardera arton spår och bommar. Spårens djup uppgår till cirka 15 % av radien hos öppningen 16 i skivan. Vid ett så stort antal spår och bommar som trettio uppgår spårens djup till ca 5% av radien.As can be seen in particular from Fig. 3, the depth of the grooves 11, 13 is slightly greater than the height of the booms 10, 14. The grooves have a rounded bottom 15 while the booms have a flat upper side 16, which connects to its flat flanks 17. This design ensures surface contact over the entire flank surface of the booms. The disc 8 and the hub 6 are dimensioned in such a way that in the unloaded state a clearance of 0.2-0.3 mm prevails between cooperating flank surfaces 17 and in the disc and the hub. In the embodiment shown, the hub and the disc each have eighteen grooves and bars. The depth of the grooves amounts to about 15% of the radius of the opening 16 in the disc. With such a large number of grooves and barriers as thirty, the depth of the grooves amounts to about 5% of the radius.
Enligt uppfinningen är bromsskivan utformad med slitsar 19, som sträcker sig radiellt inåt från vartannat spår 13 och övergår i borrningar 18. Den visade skivan är av s.k. ventilerad typ och borrningarna 18 med slitsarna 19 kommunicerar med närliggande ventilationskanaler 20 i skivan.According to the invention, the brake disc is formed with slots 19, which extend radially inwards from every other groove 13 and merge into bores 18. The disc shown is of so-called ventilated type and the bores 18 with the slots 19 communicate with adjacent ventilation ducts 20 in the board.
Mellan borrningarna 18 är axiella borrningar 21 upptagna, vilka emellertid saknar motsvarighet till slitsarna 19. 10 15 20 25 469 688 4 Borrningarna 18 och slitsarna 19 kan givetvis ha annan detaljutformning. Sålunda kan borrningarna 18 vara mer markerat cirkulära. Slitsarna kan vara smalare eller bredare med parallella motstående sidor, så att borrningarna 18 i det senare fallet endast uppträder som en halvcirkel vid slit- sarnas botten. Det beskrivna arrangemanget med borrningar och slitsar medför att skivans navparti kan expandera utan risk för sprängning vid den uppvärmning av skivans friktionsparti 22 mer än dess radiellt inre navparti, som uppstår vid bromsning. För att vid uppvärmning av bromsskivan 8 begränsa värmeövergången från skivan till andra mer värmekänsliga komponenter än själva navet, t.ex. lagret 7, är en mot en sida öppen ringkanal 23 utformad i navet 6 radiellt innanför bommarna 10. Härigenom förlängs värmeöverföringsvägen genom navmaterialet från skivan 8 till det på lagret 7 fastpressade navpartiet 24.Axial bores 21 are received between the bores 18, which, however, have no equivalent to the slots 19. The bores 18 and the slots 19 can of course have a different detailed design. Thus, the bores 18 may be more markedly circular. The slits can be narrower or wider with parallel opposite sides, so that in the latter case the bores 18 only appear as a semicircle at the bottom of the slits. The described arrangement with bores and slots means that the hub portion of the disc can expand without risk of bursting when the heating of the friction portion 22 of the disc more than its radially inner hub portion, which occurs during braking. In order to limit the heat transfer from the disc to other more heat-sensitive components than the hub itself, when heating the brake disc 8, e.g. the bearing 7, an annular channel 23 open to one side is formed in the hub 6 radially inside the booms 10. As a result, the heat transfer path through the hub material is extended from the disc 8 to the hub portion 24 pressed onto the bearing 7.
Såsom framgår av fig. 1 och 2 är skivan 8 helt symmetrisk.As can be seen from Figs. 1 and 2, the disc 8 is completely symmetrical.
Den är fixerad på navet 6 medelst en i ett spår 24 i bommarna 10 upptagen låsring 25, en fjäderbricka 26 och en i ett spår 27 i navets innerände upptagen låsring 28. Den symmetriska utformningen och den symmetriska fastsättningen tillsammans med de axiella rörelser fjäderbrickan medger relativt navet resulterar i symmetrisk termisk deformation, jämnt slitage av skivans friktionsytor, liten risk för bromsmomentvariationer och enkel montering.It is fixed to the hub 6 by means of a locking ring 25 accommodated in a groove 24 in the booms 10, a spring washer 26 and a locking ring 28 received in a groove 27 in the inner end of the hub. The symmetrical design and the symmetrical fastening together with the axial movements allow the spring washer the hub results in symmetrical thermal deformation, even wear of the disc's friction surfaces, little risk of braking torque variations and easy installation.
Claims (8)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9200204A SE469688B (en) | 1992-01-24 | 1992-01-24 | WHEEL NAV AND BRAKE DISK DEVICE FOR HEAVY MOTOR VEHICLES |
PCT/SE1993/000045 WO1993014947A1 (en) | 1992-01-24 | 1993-01-22 | Wheel hub and brake disc arrangement for heavy trucks |
AU34657/93A AU3465793A (en) | 1992-01-24 | 1993-01-22 | Wheel hub and brake disc arrangement for heavy trucks |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9200204A SE469688B (en) | 1992-01-24 | 1992-01-24 | WHEEL NAV AND BRAKE DISK DEVICE FOR HEAVY MOTOR VEHICLES |
Publications (3)
Publication Number | Publication Date |
---|---|
SE9200204D0 SE9200204D0 (en) | 1992-01-24 |
SE9200204L SE9200204L (en) | 1993-07-25 |
SE469688B true SE469688B (en) | 1993-08-23 |
Family
ID=20385113
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE9200204A SE469688B (en) | 1992-01-24 | 1992-01-24 | WHEEL NAV AND BRAKE DISK DEVICE FOR HEAVY MOTOR VEHICLES |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU3465793A (en) |
SE (1) | SE469688B (en) |
WO (1) | WO1993014947A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997048919A1 (en) * | 1996-06-17 | 1997-12-24 | Volvo Lastvagnar Ab | Wheel hub and brake disc arrangement for a vehicle wheel |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE504775C2 (en) * | 1995-08-16 | 1997-04-21 | Volvo Ab | Wheel hub and brake disc assembly for heavy motor vehicles |
DE19544559C1 (en) * | 1995-11-30 | 1997-07-03 | Knorr Bremse Systeme | Two-piece brake disc, especially for commercial vehicle disc brakes |
DE19628331A1 (en) * | 1996-07-13 | 1998-01-15 | Teves Gmbh Alfred | Brake disc unit |
GB9620285D0 (en) * | 1996-09-28 | 1996-11-13 | Pfm Engineering Ltd | Brake disc assembly |
GB2333337A (en) * | 1996-09-28 | 1999-07-21 | Paul Francis Mercer | Brake disc assembly |
FR2761430B1 (en) * | 1997-03-28 | 1999-04-30 | Renault | DEVICE FOR HOLDING A BRAKE DISC ON A MOTOR VEHICLE AXLE HUB |
DE19807184C1 (en) * | 1998-02-20 | 2000-04-20 | Knorr Bremse Systeme | Brake disk for commercial vehicle |
SE516577C2 (en) | 1999-10-15 | 2002-01-29 | Volvo Lastvagnar Ab | Brake disc for a vehicle disc brake |
SE0102350D0 (en) * | 2001-07-02 | 2001-07-02 | Haldex Brake Prod Ab | Sleeve for a disc brake |
DE60117054D1 (en) * | 2001-12-28 | 2006-04-13 | Freni Brembo Spa | BRAKE ROTOR FOR A DISPOSABLE BRAKE DISC |
WO2003062662A1 (en) * | 2001-12-28 | 2003-07-31 | Freni Brembo S.P.A. | Bell for a sliding disc brake |
DE10233141A1 (en) * | 2002-07-20 | 2004-02-05 | Man Nutzfahrzeuge Ag | Disk brake in particular for heavy vehicle or bus, comprising corrugated ring of spring steel positioned between toothed surfaces of wheel bearing and central bore of disk |
SE527376C2 (en) * | 2003-12-05 | 2006-02-21 | Haldex Brake Prod Ab | Brake disc |
SE531445C2 (en) | 2006-09-19 | 2009-04-07 | Scania Cv Abp | Disc brake hub assembly |
DE102012107906A1 (en) * | 2012-08-28 | 2014-03-06 | PE Automotive GmbH & Co. KG | brake disc |
AU2014290117B2 (en) | 2013-07-19 | 2016-11-03 | Hendrickson Usa, L.L.C. | Improved disc brake rotor for heavy-duty vehicles |
CN113819169A (en) * | 2021-08-03 | 2021-12-21 | 聊城市特力汽车零部件有限公司 | Brake disc for novel trailer axle |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE182186C1 (en) * | 1962-01-01 | |||
DE2807485C2 (en) * | 1978-02-22 | 1985-11-21 | Alfred Teves Gmbh, 6000 Frankfurt | Brake disc |
IN149239B (en) * | 1978-05-13 | 1981-10-10 | Girling Ltd |
-
1992
- 1992-01-24 SE SE9200204A patent/SE469688B/en not_active IP Right Cessation
-
1993
- 1993-01-22 WO PCT/SE1993/000045 patent/WO1993014947A1/en active Application Filing
- 1993-01-22 AU AU34657/93A patent/AU3465793A/en not_active Abandoned
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997048919A1 (en) * | 1996-06-17 | 1997-12-24 | Volvo Lastvagnar Ab | Wheel hub and brake disc arrangement for a vehicle wheel |
US5988613A (en) * | 1996-06-17 | 1999-11-23 | Volvo Lastvagnar Ab | Wheel hub and brake disc arrangement for a vehicle wheel |
Also Published As
Publication number | Publication date |
---|---|
AU3465793A (en) | 1993-09-01 |
SE9200204D0 (en) | 1992-01-24 |
SE9200204L (en) | 1993-07-25 |
WO1993014947A1 (en) | 1993-08-05 |
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