AU498564B2

AU498564B2 - Disc brake

Info

Publication number: AU498564B2
Application number: AU19826/76A
Authority: AU
Inventors: Y Meyer
Original assignee: DBA SA
Current assignee: DBA SA
Priority date: 1975-12-03
Filing date: 1976-11-19
Publication date: 1979-03-15
Also published as: YU282076A; AU1982676A; IT1064809B; TR18991A; DE2653860A1; SE7613563L; GB1536507A; JPS5268675A; YU40895B; FR2334012B1; FR2334012A1

Description

CO NVI VJN~V A!"PLICAT!ON FOR A PATENT

ancl oi;io-t'.;.ng C As -ivie o Frnoc o' 90n Bolv r ictor M'u go,

00 '3C~ 0 0 0000 '30 0 httkVby' apph fo~r tile gralit w a P'atentl for an invontiLAU entitled 00 '3 00 C '3

o Oo '3 '3 '3 0 0 '30

00 00

'3 '300000 0 ivhich is dve 'ribed in tho e mpany lg~q H peicaon

Tilis application is inade under the provisions of ?art XVI of tile Patents Act 19S2- 73and is bawcd onl anl application for a patent or simil~ar protection made

ill 1"uno Oil 3rd DocQctbeg, 1975~. NI (75/36947) O 0 0 ~000. '3 0

6 7'ujr adIre for servive is: I Rire Co., 1G1 Mort St., Balmajti. NSW 2041 0 6 00 00 '3

000 0 0 'A

DittQd thil 1 P3 day of Novomaber, 197 6~

IBTB ANO'YtMfLE DB.AA. i'7'~

'4 I 7-' Patent Attorney

F. 1B.RICT CO- 'I he iii~aonei' o~ Thients, PatL al Attornev. Sy~dney.

stLbMIDQIWAEI 'A1 LULa tt2W ;t Act 97

DECLARATION IN SUPPORT OF

A CONVENTION 8APPLICATION FOR A FATENT XWaL1 fl ak in support ofx the made 2ior-"iictio by

sOCIlTz Zit3 DQYLAO

to

for a -rfr an invention entitled

ac/Wt Ludeon aalu Uiral oCto ona, of care of tie r e aplicant caTJ21V1 do solemnly and sincerely declare as follows: Pbi

9 ikQ~- 4*4

am authorised by 4* 4 forh patn s:~aA the applicant for t-t panto make this declaration 9,

on XTS beha if. 141 was The basic applicati on as defined by Section of the Act made in Fran Jc 3rd December, 1975 9**

C *44

by the preseont anppl-icunt company

Yves Meyer 3 Alle du Pro Flouri, 95150 Taieorny, FPRANCE. i

,Un the actual inventor of the invention and the facts upoL which the applicant company is,4Ioxsentitled to make the application are as follows: The applicant company is the assignee of the invention from the said actual inventor.

The basic application referred to in paragraph 2 of this Declaration isMWAthe first application made in a Convention country in respect of the invention the subject of the application.

Declared -vt t j this L dy of &Ck c-t r 6P

(LII) AU-B 19826/71,.

(12) PATENT SPECIFICATION ABR IDGEMENT (19) AU

19226/7G 498564 (22) 19.11.76 19 UJ76 (24) 3.12.75 75/36947 (32) 3.32.75 (33) FR (43) 25.5. Y' 15.3.79 61DP551/2241F16D 65/00 F16B 39/24 D1 EdA KI

(72) L~YL, Y.

CLAiI4 1. A dise bralte comrprisiag a movable assembly having -ULUl mo a c~pb. of urgng afrs braki pad directly and a urn'd reac'pd by reaction on to thie respective faces of" a rotary Glo movable alsscipbly bei1nj- slidably mounted by mreans of two iitoa~Iu; yv.Ds on~ a fixd support situated in the vicinity of the one oad of each montin- pin comprisiing a thread screwed into a pn~in 1,the firod support or movable assembly, the other end of oeh mpounting pin comprising- a portion which can be turned by mc ,mo an appropriate assemlbly tocl, a locking element bceing interpo -cd between the said mounting pin portions prevent them from tariing, wherein Uile loclking element comprises at least o~.e p~oz.t1-01 w hose. l-nth is variable in a direction substantially pIv- aIRel to the fa1ces of' the disc and passing through the axes of the. floe a)L~g P-1if-.q

9,3

19 8 26/v

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2 T I 2 A T 1 0 IT

mtlu. Class

Ia rc~ fl C P ~Oh f orTrmc~Ci

0000 Pt;i-h 4ClJLe1

a3 C 00~ y'2, cwits' 14122 VLarNfYj. tt r'

tb OW OOtt o o 00 00 iNJA'~I V 1~'1 0 ~dt 4*0 o 0

i A I p I. j' 00OCIIITE AuNi:YNMI, D.B. AL.

1 9 nioulovard Victor Hugo,~ 92110 Clichy,

-a e ti~r~~ Yvos Idoever

rf''V' 'v 1 ii' n'' -a XL orneyz~ <hr r~ rq~rj 2 1vCl p L I 'V

I :KYU ~ifj~ ,p !'ie~ibI O C aix ant t2 ad:

'tfc 2 W~w~kiC W ~a Jac:: i-on of t i £ention ai AS ow us

'te -ivention relates to a ctiecc bratm motor

14orc pa-r-icudarly. the invention relates to a dKobrn.o of thne t'ype comrnimimC a maovable(-, assembly 'having v102 v~ vmis capablec' of m.ning a fi1rst brake pad directly ,aid. ocond brake pad by reaction on to the respective :faces 0i rotavy dISC, -t movable assembly being slidably r.noimtedc

by moauz of two mountiU.g pins on a fixed Gu~port situatedl i tLhe vioini~lty of, the disc, me,0 end. of ea,?hI. mounting pin c~oiaprzi n; a thred scre-wed into a tappi~g in the fixer sup~port mr rnovabilc: assembly, the other end each maounting

p'?11 con px:sin,, a portiorn. which can be turmned by racans of an arpr~2Oassembly tool, a loc!,ing element being"Y intILerposed boti-cex the said miotating pin portimnis to prevent thcm f~romn

ini a bxake inl wvhich the mouiting

piyts oan beo fixed t10o either thac SixeL support or the movable ast 102y thc P:Lr.s "I'e never -pe2,Cect y parallel ancL the cjiv~ne'il bu t'io. thoir ~Is th1ereftore not exactly t Sam.12

19926/6

at both. ori~ of the pins~. liowever, thezc ttvo disvancos ca,-r~not vary, sine one is defitned by the Ai.xed sup~port or movablP asoomblyt depen~ding on2 which of these two elements the pips awe Szoae to wheveas the ether is determined by the locking olement which MigiAl connects the other encte of the pins. In (VqitA*:aq while thci distance between the azes of~ the pins ean be mauio rigorously identical to the distance between the ane the cor rponcting borees at the point where the 42 0

01*0 pine ::re fied to the 1izec support or movable assembly, the d istance betw~een the pin axes at the other ends oT the 0 pino c,?Lmot be defined so accur'ately and does not generally

enwoopond to tho diotance bcc. the bove axes. The movable asoeiibly or fizeci support movoci along the entire length of the pi=s acc ording to the wear on the brake linings, so that the friction between the pins and the bores may increase cons id erab:ly-; whon the movable assenbli, is in the position farthet from t he fZizd support.

To overcome this disadvantage, the invention pa proposes a ctisc breke of the type described above, in which

the lookin; plement comprises at least one portion-whose 00000:leiygth Is variable in a direction substantially parallel to the fCacs of the disc and passin,,- thxrouh the axes of the rAouiY2t ing pins. Tna prci' .rrod emnbodimen't of' the invention, the lockzing element comprises a snbstontially flat plate, t is characterized in that the portion. variabole lenLg.*th copmrriacio at least one corrugation formaed in the plate at rigt-agloto tho said direction.

19 826r,6

TWO OibodimoxntP of tha il~eation will now be deocxibe:d by way of e=*Aiplo with refeence to the accompanying drnwingas; in wh~.cho Figlure 1 repreents aa end View of~ a Cisc brake cmbodying: -the principles of~ the invention Figure 2 represents a plan view of the brake shotai

C", Figuire )5 skows a section alonE a line 3-3 in 4 44 4 igu~re I 40 00 Oh 4 Fiue4. il:lustrates another embod~imont of~ the 0 00 0 *0 0 hO 4 loerwnt MouteLtd on the brake shown In Fi~e af~~ t 3 4044 4 ~0 44 00

0 000040 0 Figure 5 is another view of the lonhKin element ahoa in 1?irur' s1to 3 reprefsent a disc brake comnprising' a 4 40 0 4444

44 movablo assedbly gonerally aosignated 10. slidably mounteu 0O 444 by means of~ two mounting pins 12, 14 on a fixed support 16 9 4444*4 4 4 sitratod scar the disc 18. The movable assembly 10 comprises 4 404*0* 4 4 actuting means 20 capablo of uxging a first brake pad 22 0

4 9444 44 0 4 0 (Lkrect1y .~nd a second brake pad 24 by reaction on to the 4 444.44 4 4 rosXnctivo faces 26, 28 of thn disc 18. In the embodixen-t Mlustrated, the actuatinS moans 20 comprise a hydraulic aetao with a, piston 30 slidable in a blind bore 32 so as to defineiv with the latter a variablo-urolrnie chamber 34, which can bo connected to a pressure fluid source such as, Tor t.v~e he matrcylinder of the vehicle (not shown). Tbe aotuatln3 moazns 20 are coinoctod, posf ibly detachably, t',o a C-hapd fame '56, o ex.ample bOy screws 38. Tho, fromio 36

~9g26r6

Containo an apor tuxe 39 of which the circumfcoentially opacoa Ages 40, 42 aJlc ably receive and anchor the pads 22p 24. The cdz 40p 42 of the aperture 39 ace V-shaped ON contain slots 44, 46 to permit radial extraction of the pado 22, 24 respocti-aly. A sprinZ 48 or 00 is detachably fixed to each pad 22 or 24 reanctively,to form a subassembly wbi.ch can be rcmoved as a unit from thp remainder of the brake ltrovsh the slots -44, 46. in the e6Llodiment described, each of the mounting pis2 14coi rieoo a scre'e 52 carznying a sleeve 54 o-F Mhich the outA:LQ sur~ace coopcral-es with a bore 56 formoa in thavt Part ofU the movable assembly 0 oearirg the actuating .jxacla oi the scrows 52 is threaded at one end 58, which ic fixed in a tappin, 60 in the fixed zupport 16. In this edhodimaniv; vach screw 52 has at its othier end a hexagonal head uhich can be tuyrnod with an appr oprintc azsedbly tool to MWrte the screws 52 in the tappings 60. The sleeves 54 ar Mooeted betwoon the heads 62 of the screws 52 and the fixed

~upor t 16, The nlev~ble assembly 10 is provided with sealing means 64 to protect and lubricate the contact surface of the bone 56G and N ove 54 nd to prevent penetration by contami- nants. A lookin~g oeoent 66 formed by a sub-stantially flat plato conont the two mounting pins 12, The element 66 i:s Wourte botween the heads 62 o2 the screws 52 and the sleeves The plate 66 is shapad like anl elongated figure of 8, wiha hole at cach and Zorc the screws 52. The external dimo~ or oA Thu ond8 otf Lhe eloaoriA 66 is greater than the

19826/76

maximum dimetor of the scro;;heas 62p so that Qat least ono partion 68 of each ol these ends can be bent on to one of the fAtM on each ooehad 62, to prevent the screws if-rom tuni'g ,,nd be Lng released duxin3 operation of the

Accordingr -to the invention, since the axes of the moitntin§ piims 12, 14 are never precisely parallel, it is esentiil for the plJate 66 to'have sume flexibility in a dixection subotantially parallel to the faces 26, 20 of thr:,. dioc 13 Wn passing' tbxou~h the axes of the mounting pins. Thlo arevents excessive frictional forces from being generated

a between Cho bores 56 and the outside surfaces of the sleeves 0 54 when the actuating means 20 are in a position. iemote from the Koo ao, that the bores 56 cooperates with those portions of the outside vafaces of the sleeves 54 nearest to the ele-mont 66. In -uhc emfbodimenit descridbed with reference to JAjgures 1 to 3, this flexibility is imparted by providing the :plate 66 witih a corrugation 70 parpencticular to the longitudiLnal direction of the plate and substantially

2~ equidistant from each mounting pin 12, 14. The pins 12, 14 W can theroehrc bond slightly so that their centre-to-centro

distance at the heads 62 is substantially equal to the centre to-centre listanco, of 'the bores. i~res 4 and 5 i:llus-iyrate another embodiment of the elamont 66t in which elements conyarable to those illustrated in tho ArT embodiment. bear tho some rference numerals plus 100.* In this embodiment and although that does not explicitely ,prar fvom the dravinC~s, the cleme-,nt 166 has relativcly ,nnall

6-_ diraaion ir. its contval portionp so that a coxnigation such as 7~in thr, fire t embodiment would be liable tc, cause the ucr,nt to break af2ter being uzsed far~ an extended period on a vehiale, To overcome this disadvantag~e, two corrugations 170 aro pirov:ded, thu distances oeparating each corrugation from the narew mounting pin being substantially the same. in the embodimento shown in Figures 1 to 5, the 0Coution 70 and the corrugations 17 are each defined by two planes oubotantially perpedic LIWT to one another A and fom n angl of approximately 450 with the plane of

Woo the plate 66 or 166. The two perpendicuar planes art. a connectod to('Gthor and to the plane of the plate by 0 99 rounded~ Por~ions. Mo

010''The :nvntion, in not limited to the embodiment des- eribod$ but applies to all brahos in which a mnovable assembly iA olidable by means of two mounting pins nr a fixed suppozt, the mou)ting pins being fixed either to the -Wazed saipport as in the embodiment descri~bed or to the movable assembly. Simi- t9 lavlyj tho mountinj,, pins, may be different from. tne mou-n-ing

pins 1 2t 14 d 1acribod and iin particuls-r the portion which can bo turned by moans oW an oppropriate assembly tool may be qui-t- aif~fh'ront from, the hexagonal heads 62. This means th-at the l.ocRKiu element, which must be adapted to* the shape of-. the ?in: poition capable of reovgan assembly tool, may be aiifevent KoAm the piates 66, 166 doscribed. In this case the or each look~ing element portion of variable length may be different from the corrugations described. In particullaz, a l~ooking; eloment may consist of two membe.vs -which ctan slide

198s26lB v $1

axialy ~~ythO cem~entG vay have a~ly nuiaher of~ po-vtjo1-a of variabco logtha

04 4e m

43

4 0

Claims

19 826

£Ifjjz CtIAAI(4S DEXUING IM1 NVENTIOM AM1 AS 3OLLOWS

IA disc brake comprising a movable assembly having actuating mnanc capable of' ttging a f irst brake pad directl~y and a second brake pad by reaction on to the reospe, ctivre facesoo- a rotaiy dis the movable assembly belnC; vlidably mounted by moans of two mou-nting pins on a fixed aupovt situated in the vicinity o~f the disc, ono end each mounting pin copiiga threaL screwedL into a tapping in the fixed support or movable assembly, the other end of each mounting, pin comprising a portion whi(,h can. be ttned by mearo of an appropriate assembly 0* tool, a lookine eoout buing inlerpooed between the said

40*0" mounting pin portions to Prevent them from turnirng, *4 wherein the' locking M2emon-L comrises at least one portion. wyhoae lnlhis variable in a direction substantially paxallot to tho faces of the disc and 2assing through the axceo of the mouiing pins. 09 0* 0*1*0 0 2. A disc brake as claiimed in claimn 1, the lockint- a *04 alomont bocxbng a substantially flat plate, wherein, the Portion 0

040000 0 &l variable lomn:th coprises at least one corrugation 0

*0000Q 0 T.Irid in the pilate a*c right-ang7-s to the said direction. 0

4

04*0 3. A disc bri~~as claimed in claim 2 wherein a 6 0* 0

6 single Corrugati-,on is, fo5raoc3 in the plate substantLially *0*00* 0

halfwt~my loetwoen the mounting p.nc

AA diwc brl as claime in cli 21 wher'ein two

corruat ions are formed in the pSlateq the distaic as ;:opara tirig cach corrv atioxi fromn the nearer moutting pin beI nc,-

cUisc br ake as claimed liz~ any of claiims 2 to 4, vbhe- MAx~ the or each corrnqation is defined by two plaanes orbstantially perpendicular to ono another wad ±forrin,,, an an:Ofo aP1,2zimnatoJy 450 with the plane olf the plate, tho two porpond icular pl-a;nes bo:ig connected to one another and to the plano of~ the platc by rounded portions.

A di~Azc bvvako substar 4-;ially as, described anY.d as AlW .zatod with ro:Crence to ux'cos1 o3o± h

oO.anyinr draulnps.

0, On A icbrLesbt Paen titory as feoribe Anpliat IE O

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a a

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a a

a' a a'

0

4* 00

04 44 8 *4 0

4* ~I0 08

0 00000 0 4

17

044Alt

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