SE1451421A1

SE1451421A1 - Pedal assembly for electronic braking system

Info

Publication number: SE1451421A1
Application number: SE1451421A
Authority: SE
Inventors: Jarek Soltys; Nack J Sung
Original assignee: Ksr Ip Holdings Llc
Priority date: 2012-05-03
Filing date: 2013-05-02
Publication date: 2015-01-27
Also published as: CN104272212B; DE112013002305B4; WO2013186609A1; KR102173665B1; KR20150003346A; CN104272212A; DE112013002305T5; SE540761C2

Abstract

An ølectrícalﬂnechaxxicai hmke sqapßlnïus íncíudes a brack- 330' ~_ __:§ ï . /w \_¥ \33k' \ ,_ ä f;g m-ff» “Q Vff-f .uzaxåfï//fv -"';\,x\, V” k' k” , '- išf-fräç” ßïš; 'JM \ \ «- <-Å* .fw L “ fßﬁ \©èf^ 1»w FIG. 13 et and a pßdal arm supported by the bmckct. 'The breaks: has a cam sv*face. An mm cxtends íítsrn the pix/ot arm to a*iš1l10\ve1'. As the pedal armxxmves íøward íhe bracket, the follower :moves zilcmg the can: surface, corn-pressíng the cam bias for sinluiating the feel of a purely mechanicai brakesysuanl. Lu certain etnbcsdixxxenïs, the cam body rotaies wfhile in oïhers thecam tbííovfer rotatas. WG ZGH/ißááw A1 HišíåíllåšššlllEššllﬂlíåilﬂllššllššåMHElišlﬂišlíšïiišiilåÉílliššllålšlíﬂišišlllåšlIIBHEÉI EE", EES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LVÄ MC, FÄK, MT NL NO, PL PT RO RS SFI, SI SK M" bål-äre r/ze expirarfozz -.>_ff*i1e rinIze Iírnitfar arnfëzzzlirfg :hejgïvï TR; OA-PI (ÉF ä: cb di CM (šA Gn“ czzuzræzs, and to be republzshezi m the ex-'erzt q; recezpl ujGwï ML' .NR NE qïfD * ° * ” ' ” \" umerzamenls (Rade eifïßﬂïzj) PUILYÉÉSÜQXÉ: -~- ssätš: ínierfxc:tinnal .vearc/z report (Lfirt. 2!(3_J_}

Description

IG WO 2013/186609 ÉPCTIIBZO 131090814- PÉDAL ASSEMBLY FÛR ELECTRONIC BRAKING SYSTEM CRDSS-REFERENCÉ TO REl-ATEB APPLICATIONS(0091) 'This application is a conïinuacíozﬁànqzart of 0.3. Patent Agupšicatiøxx No. }3/{}2},288ﬁšed February 4, 2011, xvizâch ciaizns priørity of US. Frovisicnaí .åpgašicatían No. 611337500 ﬁli-:d Pïtbruafy 4, ZOÉO.

BACKGSKÛUNÄ) OF THE INVENXTIONI. Fick! of the Invcntior: [ÛGQSH An apparatus før sirnulatirxg ïlae feel of a pureïy nmchanicaï brake. systern.2. Description øfthe Wšor Art{(}003} Bicctricaknïechanicaí systems får sânnušatšng the ffsazí of a puraiy mechanicai brakc: system are wßi! known in the: prior art. Thase systems are usæd, for exampie, wšïh “brakc->«hy~wire” aecšmošogy. In °”brakc~>~by»~,víræ,” the braking ïbrcs is correiated with Gaia finn: a serxsorthat ïracks the: position o:t“a brake pedaš instead af in a pureiy mechanšcaï system »vhsre the forceof the vehiah: operaïwﬁs føot on the brazke pedaí contršbutes io the Said prﬁssure in a mastercyiindar. ((3094)símulating the fee! of a mechanism) system »vhen the vehicle is operaiad šn “ivrake-bywíref lt For exarnpíe, U.S.i Patent 7,748,792 'm Crornbsz et ai. discšoses a systcm for includes a bracket and a pedaï arm anovabiy supported by the brackfst. Springs pmvide resistance”m :ha :ncwement øfths pedal arm tovvard the brackeï, howcvsz' the resistance provided does noteopy the resistance of a pureiy nxechanícai system.

IOÜGQexampic, typical ímßrnaí combustior: engines include cam fošíøwers bíased agašxxst rotatable cam »Cam folšcæwers biased agaí-nst rotatabie can: bodâes am ašso wei! kam/n. For bodies to open and ciose »faíves tø combustion chambers. A cam fbišowfex' æxtßncis n: the earn body. A cam bias bíases the cam fcsílowcr against the cam body.

SUMMARY OF "THE INVENïï'IÜ'NWGGQ A bracket and a peda! arm is møvabíy suppmted by the bracket. Om: m” the bracketand the pcdaš arm prssents a cam body. The other of the bracket and tim peda! arm presents acam folïower. A cam bias ïmercønnects one of the sam bødy and the cam foišowez' io om ßfthebracket and the pedaí arm to bias the nam føliower and the cam body agaïnsz each cuther. One of the cam body and the cam Fošíower is rotatable. The: cam bias intarcnzﬁxzaßts the rotatabie one of I WÜ 2013/186609 PCT/Ißßíâlﬂüﬁåši-'åthe cam body and the cam føíiøvver to om: of the bracket and the pedal ann, 'fhß cam føïiøwcx'moves progressivcly aløng the cam body zzgaíxxsi resistance from sašd cam bšas as said pædai arm moves tcwvard said bracket for äízvmiating the Feeš of a pufrešy mechanšc-aï brakf: system.

BRZIïfIP' BESCRIPTYON OF TPífi DRAVVINGS(9807) Gïêxea' advasxtagss of the prasenï ínventíoxx vd!! be reaciíiy appraciatßd, as the sameöfzcorrms hattar understand by rßfererwce to ïhe íbiíovving detailed dessršptšøn when considered inconnecïiosx *with the accowpazïying cirawings vvherein:(9808)brzacker as the p-adai arm approaches the bracket in a purely' nxechazwícaí system »xlíth three triaís Figure; I is gfaph coxrzparizxg the resistance agašnst rnøving a pedal arm teward a ofan appafﬂtus acaoräšng to the present invention; (09091 Figure 2 a perspceotíva view of an apparatus acuørdíng to a ﬁrst eznbodšxïzçnt of thepresent inventšoxw; [Oülfﬂ ffigure 3 is a back perspective view of an apparatus accørdíng to the ﬁrstenabodianent of the presenï ínvention; (0611) Figure 4 is a side view m” an apparatus according to tha first embodšrnefrzï of thegaresent inventiozx; 10913 Figure 5 is a pøsítíon sz-:xwsnx- accordïng to the first fsrnbociixnent of tha presentínvemican; WQISI Figure 6 is a perspective view af :m apparatus :according to a secønd ambociirxzent ofthe present šnventiosx; “ .., 198141 Figure 7 is a parïiai sectional side view øf am apparazus awcørdíng ta tšw secondembodiment of :ha present ínxfentiøzz; {001^5} Figure 8 is a psrspeczive view ufan apparatus according to a tlæircí eznbndínuzent nfthepressnt šnventiosx; [OOIQ Figure 9 is a parspectivc view of an apparams according to a fourth embodixmexzï of'the present invemioxï; NGM] Figure 1G is a sida vícew oi"a.n apparatus according; to the fourtš: embødianczat of thaprcsent ínverztíofx; {§}í}18} Figure: U is a parspective of a pecia! assembiy according to a 'fífïh embodimßnt øfthepresent inventífsn; (99192 Figure 12 is a side víew of the peciaš assembly' of the ﬁfth embodšment mi" the inventiøn with a paxtial cut away of a earn san-fasa; 2 WO N13/ 186609 ?CT/IB2-G13I001)S1Iå (NEWomoodixnozzt oftho invontion; andWMI) the invontion with o ou! away ofthe cam surface, Figure: 13 is a perspoctšvo view of a podai :assembly of a Sixth altornatíxfo DETMLEÜ DESCRXPTION 'OF THE XNVENTIÛN 1110221 Roforring to the Figuros 243, wheroin like numorzﬂs ímíioato corresponding penisthroughout tho soveraš views, aon apparatus for símukxïing the fem! of a: porošy mocšxanšcai brakosystem ínciudos a bracket 120 including a centraí gz-ianar gzwozfiozx 1313 having a lower ond 124 andan upper ond 126, Tho lower and 124 cIcñnc-:s an aporturo 128 ífoï ašlovßxing a brake rod (notshown) to pass therethrough. Tixo bracket 120 írxoiuriícs a íoñt am: 130 and a right arm 132spacod from each other and each extooding perpendšouiarb' Lzpwarcí fïom the upper c-:nci 126.Each of the íoñ and right arnxs 130, 132 presents a ﬂango 134 oxtoradíng pofpexwdioxzíaršythorofrom for rnounïing the bracket 120 to a ñrowaií (noï shown) of a vehicle.

[8823]perpendiozalaršy thorethrough. Each of the pivot holes 136 is oonoentric to each other ašong a Each of Tho 161% and right arms 130, 132 deﬁno a pívot hole 1.36 oxtonrííng pivot axís A. A pix/ot rod 137 is supported by and oxtonds tïhrough each of 1116 pívot hoïos 136.Å pívot tube 138 surrounds and is rotatabïy supported by the: pívot rod. A podaï arm 140 oxtendsbem/een a proxima! and 142 ñxod to tha pix/ot turbo 138 betxvoon the Kofi arm 130 and the rightarm 132 and e. dísta1 ond 144. "The oístsd and ïﬂïå o? the pedaí arm 140 has a pad 146 fixedtheroto.11111241 doﬁrxes a sensor slot 148. -Tho sensor siat 148 is arouato aná is conoentršc with the pivot axšs A, ln a ﬁrst ombodhnont such as the apparatus shoxvn in Fšgxsro 2, *che right arm 132 Tho apparatus ínomdes a oaksštïavn sensor 250, an oxampk: of which is a non-oontacting positionsensor of *the typo manufaotured by KSR and dšsclosod in US. Faton: 7,22l,154. Tho positionsonsor 150 has a sensor followor 152 dísposed in the sensor S101 148. A podaš return rod 154extends pofpezadicxüazﬁy 'from the peciaí arm 140 and parašiei with the pivot axšs A. A podalrotorn spring 156 extonds ñ*on1 the contra! píanar portion 122 of the bracket 120 to the pedalreturn rod 154 to bias the poda! arm 140 to a home position. 'The pedaí return spring 156 has asaddšc: 153 dísposeo between :ha peda! return rod 154 and the podai return spring 156 forpernzíttšng reäatšvo rotaïšon between the pedai return rod 154 and the padal roïum spring 156. 109251the righï arm 132 and engagos the stop arm 160 in homo posšïion oftho podal arm 140 to proven: A stop arm 160 extancis fronw the podaš arm 140. A stop bracket 162 exïends from 3 Fšgurf: 14 is a side view of the poc1a1 assembly of :ho síxtix alternative ambodirnent of' *ii/VG 3013/186609 PCT/'ißliilâ/OÜOSI-“i:iiovenient of the pedai arna 340 past items pesitiori. A cam foiiower 164 is cyiindrícai andextends perpendícuiziriy finn: the. pcdzti arm MO and paraiiei to the pivot axis A. Tits brackc-:ti20 inciudas a: cam support 156 that extismcis parpendicuiariy upwarcš iiont the iøwc-:t and H4 øf'the bracket 120 adjaceiit the right atrn 232. A buss N58 is cyiindricai and extettdsperpendicuiariy tinm :ite cam supgnørt 266 and tmwatcš th: petiai arm V30. Tin: cam stipgnøit i66includes a cam pin 270 extendíng øutxvard ﬁmn the boss 168. itiñåâ) cam pin 170 and tiirough a trough point N76 to a traveiing and 178 to pressat a cresøent-shape A cam body 172 extenais atcuateiy betsveerz a pivøt end 374 hšrigczdiy íixed to the having; an inncr surface. 180 being convex and fasing the tracker 120 and a cam surface 182opposite the inner surfaca ifšf) being concave. 'The sam sus-fäste 182 is siktabiy dispnsed againstthe cam fuiiower 164. The cam body 172 has a icmfcr anchoa' 184 disposed adjaoei-:t the trougitpoint H6. Tits iøwcr ancimr 184 extends tadiaiiy' outward frost: the: inner surtàca 289. A cantpuiier WO is a sptíitg that ititercontifscts tim lower and i24 of the: braci-:et 120 and the iøweranchor 384 ta puii the cam surface 182 of the: cam body 172 against the cam foiiower ió-ál. 'Tittacam body 172 has an upper anchor 188 disposed between the trough point F76 and tim traveiinv,end 178. The tippar ancitor 188 extends perpeitdicxiiariy ﬁvam the inner surface 180 anti paraiis-.i»vith the pívot axis A. A cam bias 386 is a spring that interconnects the tippar and 126 of tiiebracket 120 to tim iippez' anchør 288 to puii the cam stirface 382 ofthe cam body 172 against thecam føiiower 164, [BÛZÉÜpivot end 174 in the hmm position ni' 'cite peciai arm E40. Tha cam fniiower 164 moves The cam foiiowaf 164 contacts the cam surface i82 of the cam body 172 adjacent the prøgressiveiy along the cam surface: 182 ikon: adjacent the pšvot :and 174 toward the trougši paint176 and then tøward the traveiirzg; end H8 stretching tim: cam bias 386 and the cam puiier 190 asthe pedai arm 140 røtates with the pivot tube 138 taxi/art! the: hrzuzket 220 for síznušatirzg the: feetof a péureiy :itechanicai brake system. The cam 'foIiowe-r 164 moves pfogressívciy aiøng the camsurface i32 reiieving the cam bias E86 and reiieving the cam puiier 190 as the pedai arm 140røtates vvith the pivøt tube i38 away from the bracket IZQ for sinxuiating the feel of' a pureíynteshanicai brake system. 31028]292 are disposed about a pivot ttxbe 238 and betxzvean a ieft arm 230 and :i right arm 22.32. (hu: of in a scsond etnbodiiticnt such as the one shown in Figure 6, a pair of torsion springa the: torsicn spríngs 292 is cm each side of an tippar pørticm 242 ett: pedai arm 240. Each of thetørsioxi Springs 292 engagcs the peciai arm 246 :and e: different sne of the rig¿ht arm 232 and the ieñ-arni 230 før opposing tim :noveinerit of the padai arm 240 attøut the pivot tube 238 toward 4 ii) WO 20fi3/läš6609 KKÉT/IBZOIB/Ûíbíšßlåtha bracket 220. The pair of sprängs 2.92 bías the pecía! arm 240 m a hmm pøsíïšon ofthe pedaïarm 240.gfmzsß; pivot axís A. A bracket 220 íncíuzias a cam support Zóš cxtending ﬁwsrrz the lower emil 224 aftšze A earn follmver 264- ßxtezsxda pßrpazxdícuâarljy from: the pedaš arm 240 NßfaUc-:l m ïhe bracket 220 aqiacezrzt the left arm 230. The cam support 266 prsserafs a ñictšon san-fasa 29601211;is arcuate. The: bracket 220 inciudes a cam pin 230 :standing from the cam support 266 paraïieivvith the pivøt axis A.

[0030]nam pin 270 and tšzrough a tz-ozagh point 276 and :c a traveííng end 278 to cšefm: a cresoent~shape A cam body 272 extends arcuazešy between a pivot and EM himgscily fixed to the, and a can: surface 282 being ccmcave. The cam body 272 has a shape 298 hingedly lﬁxed fhsrestobemeezz the friction surface 296 and the cam bšas 286 ta provide 'fršctíofxal resistance to themovement of the cam body 2ï2. 'The shoe 298 has a hïngf: end 300 being rotatahly connected 'mthe ïravsling and 2% of the cam body 1272. 'fbe shoe 298 extends from the hänge and 300 to africtíon and 302 siídabïy dispesed against the fríctšcsn surfacø 296. Tha cam body 272 has aspring retašner 304 rotatabiy connected to tim cam body 272 between :ha travekíng and 278 andthe trøugšx point 276 and dispøssd beiwcesrx the cam bías 286 and the shoe 298. A cam bias 286šszïercønnects 'the cam support 266 øfthe bracket 220 and the spriﬂg retašner 304 of tha cam body272. füüßﬂacsek-:rator assßmbly S06 :rxoxsnted therem. A pair oftorsiorx Springs 492 are dispøsed about the ' In a third embodisnexxt such as the om: shown in Figure 8, :hc twracket 4-20 has an pívot tušne 438 :amd between the ieñ arm 430 and the right arm 432. Cnc of the ïørsšoz: springa492 is on ßither side of the pedai arm 440 and aaah engages the pcdaš arm 440 and a differantune of the right arm 432 and the leñ arm 430 for opposing the nwvermant of the: pezfïa! arm 440abøut the pivot tube 438 tovvard the bracket 420 and bízxsíng the pedaï arm 440 to a hønxepositšmx ofthe pedaš arm 440. (0032) aåjacent the pedaí arm 440 and along am inner surface 475 to a second and 510 to pressat a A cam body 472 extends arcuataly' frem the pedal arm 440 between a ñrst and 508 crescenbshape. The inner surface 476 ia convax facing the ciístaï end 444 of the pecía! am: 440and a cam surface 482 spposšte tha inner surface 476 is conøavc, (0033the iøwez' and of the bracket 420. Each of tha cocker pin arms 5 EZ deñrzes a rockar pin hair: S14 'Fhe bracket 420 irzciudes a païr of rockar pin arms Sill! each cxtfznding upward fram fzxtending perpendieutaríy theretšxroxzgh and paralíeí m the pívot axis A. Each of the rockar pin bi VVG 2015/3 86599 PC-'ffïßšüiåfßüilêšlá hoíos 514 is oonmentrir: to each othor, Tlrobrackat 420 includes a rociror pin åäö rotatablydisposocš in and oxïonding between ïho rockar pin šxoios 5 š 4. fﬁâšéê; A cam ïolšoxver M4 cxronds from a ošvot ond M4 hšxxgodly fixed to the rockar pin5 ié oftha bracket 420 to a travelšrxg end 478. Tho travoššng and 473 of the rockar arm deñszes aspršrrg rotairzor 504 being dšsihsšzapecï. Tho travoïírxg and 478 of *the rookor arm aiso doñrxos apair of roiler bokas SES. The ”zravošing ond 478 has a roller S20 rotatably dšsposod in the roiåorhoíos Sïå of ïho cam fošlower 464. The roller 520 of ïhe cam body 4% is slícíabig/ dšsposodagainst the cam surface 482. A Cam bías 486 is a spring írrtorconnocting 'the bracket 42Ü and thespring rotainos' 504 of :ho cam folïowor- 464 for pushirrg :ho cam rbšiowor 464 against the camsan-face: 482. (00352 Tho rollen' 520 coniacts the cam surface 482 of 'che cam 'oody 472 arijacont the ﬁrstond 508 in home position of the poda! arm »Mä Tho roiïer 520 moves prograssíveíy along thecam surface 482 from aájaoont the ifirst and 508 toward the trough poânt and 'then "toward thasecond and 510 cornprossírrg the cam bías 4-86 as ïho pedaí arm 449 rotatos vvith :ho pívor tube438 toward the bracket 420 for sšrmziating the fee! of a purely moohanioai brake system. Tixoroïior 520 moves progrossivošy aïong (ho cam surface 432 tom/ord the ñrst and 508 reššovšxzg rhocan: bšas 486 as the podaí arm 440 rotates about the pix/ot tube 438 toward home positirrn forsínmïating the fee! of a purcšy nrocïrarwioai brako systern. íßßââ]692. Each oftho torsíon sprängs 692 is ciísposoå about the pix/ot tube 638 and between the ïaft A fourtêz ernbocišnrenr such as the om: shown in Figure 9 iras a pair of torsíorr Springs arm 630 and the right arm 632. Om: oftho torsion sprirrgs 692 is on either side oftho podai arm640 and oas-h ongagos the pedaï arm 640 and a different om: of the rígght arm 632 and the šoﬁ arm630 for opposíng the: :movement of :ha rar-zoo! arm 640 about the pívot turbo 638 toward the: bracket620 and bíasirzg the pedaí arm 640 to a horno posïtíon of the pecial arm 540. A position sensor659 is fïxocï to the left arm 630 for dotooïšxag anguïaz' posíïíon of the podal arm 640V A switchbracket 660 oxtoncšs frorn the podaï arm (540 to aotivato a brako lamp switch. A stop bolt "F22oxronds through the podal arm 640 boïvreen :ha cam follovvor 664 and the proxhnaš and 642 ofthe poriai arm 640 and adjacoxrï the cam fošiowor 664 and is ﬁxed to the bracket 620 forprevonrírrg the podal arm 640 from moving past the homo position of the: podaí arm 646. [ÛOBÉÜ A cam body 672 oxtonds from a ñrst and 708 fixed to the šowor ond 624 of thebracket 620 roward the pmdaï arm 640 through a frough point 676 to a socorrd and 7š O, The cam body 672 presents a cam surface 682 and the cam saxrfaor: 682 is arcnato.

IQ 3G ÉVO 2013/186609 PCT/lßlíilå/Oüíiêšlﬂi[0038} A cam foišowar 664 ims a gaia/Lit end 6714 š-xíngediy ﬁxoci to th: podai arm 640 bom/senthe proximai om! 642 and the distai ond 644 and oxtends to a troveiing and 678. Tho camfoiiowor 664 includes a roišer 720 rotatabiy mountod cm *sho travoiing and 678 of the camfoiiowvar 664 and siidabiy cíisposod againsï the cam suifaco 682. [iišâíštëi A bias oicvis Y24 is hingeoiy' nioumoci to the traweiífzg ond 678 of the cam foiioworóšéi. Tho pociai arm 640 has a bias rotainer 726 hingodiy moimtod ihoroto between tim pix/ot ond674 of the cam foiiowor 664 and the ciistai ond 644 of the peciai arm 64Û anzí oxïondšng tiiorefroxntoward the bracket' 620. A omm bios 636 intorconneots the hias rotaínoi' 726 and the bios cic-:vis724, The cam bias 686 includes a bias spring 728 for pushizig the cam foiiowor 664 against thocam surfiaco 682 and a spring coiiector 730 for reiaining tim isias spring 7.28. iíiiifšfij Tho oain fošiowoz' 664 Contacts the cam surface 682 of tho can: body 67% adjaoizrit thesecond and 'FIG in hmm-_ position of tim podai arm 646, Tho cam foiiower 664 rnovosprogrossively aiong ïize cam surface 682 froin adjaoent the second ond 739 toward the troughpoint 6%' and then toward tha first end 708 ooznprf-:ssing the bios spring 728 as the pscšai arm (Sf-iiirotmos with the pivot tube 638 toward the braocicot 620, Tho cam foilowvc-:r 664 movesprogressiveiy aiong ihe cam surface 682 toward the first and 708 roiíevíng the cam bías 636 asthe pedal arm 640 rotatos about the pivot tube 638 toward tim home position for siinuiatirzg thefoei ofa puroiy meohaníoai brake system.

HECMH A ñiñh aiiornaïivo ombodimani: ofa peciai assombiy 810 is shown in Figuros 10 andIi. As best shown in ifigxiro iO, a peciai arm M2 is pivotaiiy niounted io a bracket 814 by apívot pin 816. The bracket 834 has a center portion 818 oxtondíng bsovzeri a pair of arms 820,822 which siipport the pivot pin 816 and pedai arm 812. [00423mounted to oxtond outwarcíiy from the pivot arm M2. Tho spring assombiyf šiioiudes a spring :eat 828 which is pívoxaiiy' :noumtod to tim center poﬁioii Slå of the housing. A ïoiosoopíiig rod A taiosooping spring assombiy' 824 oxtends between the bracket 814 and a pin 826 832 which is biasod by a main spring 834 extencis from :lie spring som: 823 to a saddie 824. Thopin S26 is pivotaliy' received in a groove in the saddio 824. 'fbe spring 834 is oapturoci betweenthe seat S28 and sacidïo 824 to oompress when the pocia! arm is dopressed and exorts a ﬁrstbiasing force to rasism depression of the porlai arna The teiasoopírig rod 832 guides :hadepression as ïhe sea: pivcfts on pin S38, (Giifißiforrnod on the oontrai portion of iiio braoiíoiz. Tho iiyste-.resis assosnbiy irioiudoﬁ a hub 344, a A hysteresís assembiy' 849 cxtonds botwoon ïho pociai arm išiâ and a cam sin-face 8422 foiiower of roiier 846, iiysterasis spring 848, and toiosooping arm 850. The hub oxtoncis around i' 2G WO 20131186609 ígCïífßåüiâ/Oüßåšl-ithe pix/ot pin 816 and is Secured to the podai arm by fasta-mors 852. 'The hysterosis spring 848may havs e: skiffer spring' oonstant man the main spring S36. The cam surface 84232 is siiapod tocompress “the iiysteresis spring 84-8 inczroasingiy as the: cam roiior 346 travels :xiong :ho camsurface S42 during :iopmssioii of the giecial arm 822. "Tho curvaiure of the surfizce is chosen toincrease or docrﬁ-.ase “iiie resistance io daprossion as ïhe pociai is cispressc-:d to sim :iiatc the desired'resuitant force, The rasisitant iforco is the: sum of the biasiiig rosístzmoe of both the :vain springand hyfsierosis spring ami provicios a rcsuii such as shown in Figure i.

WWQpivot pin a: an increasing rate. imtii a siigiit inwarci izurrip 354 is formed in the cam sizrface. 'Foo The radios of curvatura of tha cam surface dooroasos iriwardiy with rospect to the radius ofthe ourvature timer: incfeases. The: cam surface begins to are for a short distance beforedecroasírzg iriwardiy. "Tho hump 354 provides a “kick cioxvn” eﬁkaot.

{Gi}45}piano ævhich is coaxiai with 'mo pivot to sixpport a threaded boit 860 which is posítionod to A stop 856 for ihe: pedai arm is fomiod beïxveei: an arm 858 ivhich extoncis aiong a contaci stop pad 826 which is inounïozš on a support 864 which extends from the pedai arm. 'Thotrav-ei oftho bolt niay oc: adjusted to stop the pedai arm 812 in the proper position,

[0046]14. The sixth preferred embodiznent is similar to the enxbodiiiieiwt ofifigiires ii and 12. A single A Sixth proièrred ernbodirrnznt of a podai assembiy 919 is shown in ifigures 23 and arm 912 extends ifrozn hub 914 to a friction shoe: 916 which is pivoïaiiy rizounted on a free and918 of the orm 9i2. A biasing arm 920 is pivoiaily mounfecí to an inner and 922 of tha ﬁrsï armto extenci to an inner surface 9124 oi' the friction sho-s 916. An ouior surface 926 of the fiir-tionshoe: ridos aiong a camﬁhaped fricïion surface 928. Siniiiai* to tha cam siiriäce 842 of the ﬁfthombociiment, the surface :may iiave a texture or iiiction :material iiko that of a braiﬁe shoe togenerate fiiction. Biasšng syns-ing 930 is heid in a toioscopirig housing 932 xvhšch is mountad ai:one ond 934 to the housing and a: another ond 930 to the biasšiig arm 920. fišüfiïispring 931) is coznprassfsd against the biasing arm 920 oftho hysteresis mechanism. Cfoariprossiorx When the pedai arm is niizprosscd, the :min spring 824 is oomprossed and the iziasizig of the biasing spring S30 forces the second arm against the and oifhe shoe 916 to push the shoe9i6 into contact with the cam surface 928 of the housing. As the shoe travois aiong the camsuiface, the force: inoreasos against the shoe until it travels ov-sr a kicicoowfix hump tizorobysírnuíaiting a kickdovifii effect. {004S} Obviousiy, many modifications and Variations of the present invcntšon are possibio in light of the above teaohings and rnay be practicecí otherwise tiian as speciiioaiiy doscribod. whiio within the scope of tho apponfícﬁd ciašms. 'Tiiose fsritoizedont rooitaïicans should br: 8 VVÛ Zíšišfíßóišüš? PCT/IBZO 13/000814 interpreted to covßr amy combination in xvhich tha ínvc-:nïíve noveity exßrcises its uxílïiy. 'Inaddition, the reference :mmerais in the oíaizns are nxerely for øonveníerxce and an: not to be read in any way as íirnítíng,

Claims

1. 29 WG 2013/ 1866309 FCT! ÅBZO 'l3/009814 (JLAIMSI. A. peda! :zssenxiziy før a pedai am: of a vehicle comprising:a bracket fbr pivotaiiy supporting the pedaï arm ahuut a pívøt axšs, the bracket having acam surfacx: posítioned radšaiíy outward from the pïxfot axís;an arm extending frem ïhe pedai arm to the: cam surface; a foišovzer rnoxnzted to an end cfftíxe arm;a tviasšsxg spring ibroixzg the folšowez' zzxexrüzef against th: :sam surface. saach that hysterssis is genefated when the peáaí arm is depresseci. "2, The psdzsš assembly of ciaiæn i, whareirx the padal assembiy furthar ccmprises a rnaïn spring extencimg between the pedai arm and the bracket. 3. 'fbs pedai aﬁsenxbiy of claím ï, fuxﬁwzr comprísíng a hub :noumted tø the pedai am: about the pivot axís and vvherešn the: arrn extcmds Emin the huím4. The pedai assembšy' øíclaím 3, wherešn tha føllawer is a relief. S. 'The pedaí assembly ef ciaím 4, further aomprising a hysteresís spring extending between the roHc-:r and the Ixub. få The peda! assc-:mbïy af ciaízn 5, wherešr: the arm is a teieszzopizxg amx.7. The pc-:dai assfmxbly nf alašm 1, wherešn the fnšicawer is a shoe.8. The, paciai assæmivšy øf aiaim 7, fufzhcs' carnprisíng a Ezíasixxg arm extendixxg between ona enà of the arm and the shoe. 9. The pedal assembly of claínw 8, whereír: the biasšng spring extends between the bracket and the bšassšng arm,