DE8404477U1 - Servo vehicle steering device - Google Patents

Description

■ a «· · it ·

The invention relates to a separate device. with a ritael lined with a Lejik column, which engages with a part of a triple bed, which can be moved in its length in a ylind-valued housing, on both of which the Oeai vocal with a sparse cladding is connected to a vexblangemlttel mural aiad and the one "KeI-benetangeateil" n with a RoUMa eufmlat attached to it, ia deaaea area daa eehäi * ee one of the piston in an iaaer en, awiaooea the piston and the cream anyentell located and eiAea äuflerea cylinder loader space uatokeaeealeeSleem space each with a split center in every band celebration. forms, dax aa dam from 8 atn »t aniiteil d sende ditseh a Fuhcua ^ eiwohee vereohloeeea iat, diMNfn which the Kolbeaetaaf part sliding and dioht niadiaareB ^ affltet, ond dec an that damaaaaeil sugeweadte volumes by means of an attached ribbon. durea then in the inner "ylinderratm a bttlee diat hiadercHgeltthrt iat, which eieh bed fully vergeeeeaebaeem Zabnetanga part" in the cylinder "with radial Abetaad to the cylinder wall uad with radial play aur Aatxiebestange up to the beginning area of the Kolbanetaagen-parts through diactem round with a sliding diactem iet

both Zyle signed off aein _# ao dad eich fttr die

the drive drive length mete ale results in half of the tooth timing portion. H4rd mos & eak-

haltea and thus the Fateaio & exteit dea F to increaseea, so it is the toefcanatp «Servofatarzeegleafcvofrieetaag nieht mSfliea _f die Bnniaago sa kleiaeara, eaae dea vfesseMefeeueg der Aafcrinae also eiazuschränkea. Eiae deraartilge

if · «*« · ·· ·· J Λ ·] V " ¹ I- ν

dt ·· turned ·! j · «, which makes te · Fahraeug more difficult do let handle.

Um bei Tagebau «! Verechiebeweg 64 «tsulftnge der lenfcvorrlohtun «denaooh au was ready to shrink beat, parallel eur drive day · «4m & Arb« 4tMyllnde *

• uf 4 · »SaiuMtaafaaMil teaelurlaltt w * ard« i kaaa. BIa 4 «Mart4l ^ • ttA «B I4g working cylinder teaMifft ma« toev mate »let« tta4 l «l« «t dl · Bilf * Irir« ft ttlanltlg cuf 4 ·· I «alig« stilnea, ae dad alt su "ltalieh" a Blgiafo "uf 44 · Antrl * b *" t "& ge or 44 · tpwetftfis · au reeliaen l «t.

Fen »* mmam r« aolafn, en piston feetsahalt «n uad« nt 8yl4a4 «p« la arthMtengenteil aaettbring «a _r 4m bit 4en Rita ·! is Biagrlff "t" ht. Blesdureh is 44 · Bump length on reduced, ^ edoek a eohalenartlge Zftbneteago is required, 44 · laboriously a finished 1st and the one unfavorable A4ecaBf 44 · ne Baaltef · is partially lost and the remaining advantages are required for a more complex production nfflscen »

Gave up 4p tefindung is therefore to provide a generic servofabraeuglenlcvorrieÄteBig ma, in which the length is at verlelelnert glelehbleibeadeiB ABtriebast needs without 4as zueat2licher space or consuming sa finished parts

This task is solved by the fact that aa 4ea Bingboäea on the 4er away from the cylinder adjoins a svliadrisehe tesaehina ^ f, into which the necks aas their rack part eiageaesBieaea first position through the Rigen _r is displaceable and between the

• i. 7 i?

the drive rod and the sleeve an effective drive element is provided, due to which the drive rod takes the sleeve in the direction of the cylinder before the rack part reaches the end of the sleeve facing the piston.

As the sleeve can be displaced, the drive rod can be shortened by the displacement path of the sleeve, since the movement of the ^gf> 1b «* nff in the direction of the pinion is only limited by the sleeve when it is in its second position. On the other hand, with a given overall length of the vehicle power steering, the displacement path of the drive rod can be increased, whereby the maneuverability of the vehicle on which such a vehicle power steering is used is increased.

An advantageous development of the invention is thereby created that the piston facing end face of the sleeve in the second position is essentially flush with the ring ** bottom, preferably the end face on the cylinder side the sleeve when the sleeve is in the first position is located essentially at the location of the center position of the piston. As a result, an optimal shortening of the overall length is achieved, since the entire inner cylinder space is available for a displacement of the piston in the direction of the pinion.

A preferred embodiment of the invention is thereby made created that the cylindrical end face of the sleeve with the piston can be brought into grip, whereby the piston as Carry-out equipment for moving the Bftlse out of your first acts in its second position and thus additional pick-up devices superfluous maoht.

more · bevereuft ·· performancevbeispl ·! de * fcfladung let • o developed, which has the cold «4 m length, the fei vetentllchen half the piston stroke in addition to the volume of the ring enteprlebt.

In a further form of implementation it is provided that the ^ Ttgri « a | Ti ^; Tifr jjg housing is limited by Α "3Τ ^ Ί flgf 13ohffTi, on which a radial projection of the sleeve rests when the sleeve is in the first or second position, the first stop surface being supported by a shoulder of the rotating around the longitudinal axis of the drive rod Housing is formed, while the second an sffh Ifn ^ ff 18che is provided on the ring base sealing the jftfliy TM »? ¹ " ¹¹ " ¹¹ ^ in flxt ^ T iy r direction towards the cylinder. This enables the axial displacement of the HQlse limited so that the sealing of the inner cylinder space against the sleeve is guaranteed in every position of the sleeve.

In a further preferred embodiment of the invention it is provided that the ring base is inserted tightly into the cylinder and a sliding seal on its radial inside carries, which is in sealing engagement with the sleeve and seals the inner cylinder space against the recess. This makes it particularly simple in terms of production technology Embodiment of the invention created.

Another advantageous embodiment of the invention is characterized by the fact that the radial projection of the sleeve is formed by an outwardly projecting circumferential flange, a rubber ring being arranged on the flange of the sleeve which projects axially on both sides of the flange. The ring-shaped design of the flange prevents forces acting radially on the sleeve, which could lead to the sleeve tilting and thus to a hindrance to the steering. The Oummiring attached to the flange prevents contact noise and damage to the flange, especially when the sleeve is quickly shifted from its first to its second position by the pressure medium flowing into the inner cylinder space.

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A further advantageous development of the invention is created in that * fff ff Hi ΈΉ ^ Ιηπ Ρί πΙΉ'βΙ is formed by a driver which protrudes radially from the rack part and engages with the end of the sleeve facing away from the cylinder.

With the driver attached to the drive rod for the Sleeve ensures that the sleeve comes out of its second in its first position can be shifted so that the sleeve is always in sealing contact with the piston rod part of the drive rod.

In the preferred embodiment of the invention it is provided that the driver is formed by a pin which is passed transversely through the drive rod and parallel to the toothing. The pin, which is easy to manufacture and can be inserted into the drive rod parallel vex toothing, which can be brought into engagement with the sleeve with its diametrically opposed teeth, ensures that the movement of the drive rod in the area of the pinion can take place unhindered and that none of them are unilateral radially acting forces can be transmitted to the sleeve. Tilting of the sleeve as a result of forces acting on one side is not possible, as the round longitudinal profile is only partially interrupted by the failure.

In a further embodiment of the invention it is provided that the Gleitdiohtung on the inner wall of the sleeve ale Dichtungshttlie auegebilden is, with the Piehungshülee on the from The end facing away from the rack part has a radially inwardly projecting end Has diaphragmatic lip.

In a further embodiment of the invention it is provided dee the Gleitdiohtung attached to the piston rod part is, slides tightly en the inner wall of the sleeve and up »den den & ahnst * & gsnteii aufBehmsn4e & iiuta & raom der Help seals, the Diohtvmg duroh hurried sealing ring

is formed / which is arranged in an annular groove surrounding the WoTfefflfifffcantny ^ - ^ ¹ * J. By arranging the sliding seal between the sleeve and the piston rod on the piston rod, the manufacture of the sleeve is further simplified and it is also possible to use plastic sleeves in addition to sleeves on the metal.

In one embodiment of the invention in which the seal is provided between the piston rod and the sleeve on the piston rod, it is provided in particular that the distance between the driver and the sealing ring is somewhat smaller than
The length of the sleeve is-, this choice of the distance between the driver and the sealing ring on the drive rod that
ensures that the toothing goes through to the cylinder space
the sleeve remains sealed, enables the sleeve length to be optimally utilized when the piston rod is displaced, so that an overall length reduction of the servo vehicle steering device that is optimal for the sleeve length is achieved.

The invention is illustrated in the following, for example, with reference to FIG
Drawing explained in more detail; in this shows:

Pig 1 is a partially sectioned view of a power steering steering device from behind,

Fig. 2 is a partially sectioned schematic plan view on the servo drive steering device according to Fig. 1,

Pig. 3 is a partially taken substantially along line XZZ-XXX in Fig. 2 sectional side view of the servo vehicle steering device according to Fig. 1,

Fif. 4 shows an axial section through a first exemplary embodiment of a displaceable Bulxe for the
Provision according to Fig. I and 2,

fit · »» ine tUMebaitttweiia teUweU «faeehnAttaaa Bsftul • iofcfc aa * le§ Fig. 3 of a» write »Attftiüh * unf # form at HeveirtiMiUfieniwoejiiohtttng with an additional · · · · · · · ·

fa «Um fcMifimnfflfibeiifrielan beaeiefenea gleiaee BeBufetaalen

fite Πα. Inea seiges tiM aeTVoiahraeegleafcvorriOAtiaag eaMtaM 13, η um Mitlioh eia Byliener 11 uaA almmfiiaiMMlMM 9 mm vm.il 3S b * £ «^ igt Ut,

«Μ AtB * ia vea eieear aieltt 4wg« etellt «a be- ■ obUftM aeteft 4 · hMV93r» t ^ t. from «« m Vaatil 30 «iad e * uekmitt« ian «oblu» «tttta ·» | β _# 37 an, «on de & ea teueismitte 38 _# 99« a Aaaohluftetutsea 40, 41 4β · 8ylia4er ·

Ia dem Oehäuee 33 "ad" en aa ^ bUeßenäea Zyliadear 11, aa which Befe * t49ttngs "eh" llen 42, 43 max fasten at not shown f "ftrs" ^ sata "a aa, i" t a "Aatriefea- • days 14 angeocdaet, the Uaka aoa den Oehöttse 33 "ad seaworthy from the cylinder 11 feerauesays. Bae in Fig. 1, the left bath of the transmission stage 14 is connected above a joint 44 bit of an eararetaage 45, the ea insem of the ABtsSebeetaage 14 dn Sade sasr Vesbindiukg a with an aicbt Spuxetaageahebel a connection cup 46 aofweiet, the in

is bagged. Baa joint 44 is made of iron bellows 4Θ

45 and is tightly attached to the housing 33. The one not shown Connection of the drive rod 14 with a reebtea The tie rod is guided by the eatspeeebeader Heise. The bermetiscii the atmosphere <i1hjp iiclii on nfjncii ZaoencSsme the Folded bellows 48 are via an air line 50, which are connected to the housing 33 by means of outlet connections 51, 52 on the housing 33 is attached, connected to each other. The early days 14

tilMl "" J "

weiet femii Fig. 3 left: an endless rack part with titter in litngi direction eretseefeeaänen / linear ve »« 15 'on / which is not engaged with an ait on the side 49 Pinion ta ktomt. The Z-ahnstanffented ,! 19 iet

doa Kitsei 18 radially opposite »page In Flg. a stored by means of elaee Scuokstttoks 18 '. So close to the riddle and the Dcueksttek 18 'are rare on both of the Im Qehftuse S3 dee zetosteagentelXe 19 Freiräuoe 27 ', 27 "formed, desen Width B by the distance dee Xltaels 18 from Dnacketttok 18 * given let. Axial aaeh reehte In rig. See 2 as shown Tooth rack part 18 is a piston rod part arranged in the IyIt or 11 16 of the drive rod 14 en. The Kolbeaatang part 16 1st sliding and serves through a FÜÄrbttoaee S3 on the right volume dee Byllnders 11 hinduehge £ üart.

in the middle of the piston rod part 16 is a rubbing narrated, of the Syllnder 11 in an inner cylinder space

12 «ad a» «free Zyllnderraom 13. The inner cylinder space 12 has a ring bed 24 at its left bath, which on its radial side has a blagant 84 for an opening 23 formed in the middle. On the side of the piston 17 at the end of the ring base 24, you can see an ayliadrieche Jtaanetumang 19 in the eebäoee 33 around the Antrietoeetange, which has a shoulder 2Q forming a first stop on its flange applied to the Bitsei 18, which is right from the Pig 2 Bitsei 18 is located. Sine a second "stop-forming shoulder 21 on 1st andn end of Aasnebmang on BUtg & e & ea.

tef of Aatrlehestange 14 1st «wipe the piston 17 and an efewa la the middle of the Sahnstaageatelle 15 arranged Carrier 2? elae BSlee IO

the aa of your radial leaden side elae BlehtaagshSlse 28 aaf -

ί ι ι ι ·· ι sH ·

which has a bath on its piston 17 protruding radially on the inside irip dia-line 30 (Fig. 4) forms. The sleeve te is still sliding and the dösah den Ringbeden 34 tWAdvir mentioned «as toeaitit ta iftrem dem ftitael 18 augeerdneten inde one radially aaoh upward directed Ringflensoa 22, on dam «in OuamiriJig 26 anoarttaet lit.

9 soaps a «mite · Auefitthrungetoeiapiel der Diobtiaeg · - hülee 10, which on the again from the ayliadxleofeea Sahaetange »- ütU IS with Itfmiw presumption 1 · * «ad the eylindariiofeen bolt tank part 16 beetebendea drive set «14 iwiaenen the carrier 27 "Ad the rolJsen 1 not shown in Fig. 6? sliding arranged i * t. Si · BÜX ·· 10 knows JMaao like the ia rif · 4 geoeigte HUlae 10 a radial aaea auden geriofetetea RingJlanaoh 22 on, aaS dem an awmairiag 26 net iat. The service day 14 beaitat la tteioh awiaofeen the toothed rack part 15 "ad the bolt rack part 16 iron Annular groove 32, which let a Biohteagaxing 28 · laid down. Bto Antrlebestanige 14 knows about obex here in Pig. 2 played there ftttefttavung a somewhat reduced Purmfleg to the daa Jateciafcai'BatigoiiejMiBBOnnltW dtaroli the ring groove

sue way of working of the heeehriebenes
is as follows i

2a Fig. 2 is the 6eradeaaaetellaag of the steering delivers, i.e. dae ftitael 18 stands with the middle area des Uft IS ia Bimexi ££ vad iHBiatrw 1? loaded • I ia the middle of the Syliader 11.

If this position will turn the Aatriefesstaage 14 dareh of the pinion 18 aaea right versekohea, so wisä the Veafeil 35 so tightly that the brewing agent tends to

•: ... j ι · ι. \. · ί. ! s S S · * s ι "Γ

- 14 - ^!

MdAtelzuleitung 34 and the Druokmittelaneohluftetutaen 40, the right · next to "em ring bottom 34e" cylinder 11 is vorfeeOtn, succeeds in the cylinder space 12 and exercises on the piston 17 a Dwwh "which greases the shift on the right lower- • one side opens tea Valve 3 "the connection Bwiee & en ten luaeren aylinderreum 13 and a not shown bump * a hydreulieeüen OUueielenfee" eo ΛβΛ dee before neltoa 17 with eeiaex movement aaea right displaced «ittel lurHohflieflen can. With the movement of the gear 14 o * e & reflate, the mill 10 duroh the co-partner 37 becomes its new one in Vif. 3 Geeeigtea Mell regret neoh reeht · mitgebevov dec aelmetmngenteil 1 »die Diohtlippe 30« er 3 · reached.

6 aatoeteefeteil IS is toi dieeer shift in the inaeren ayliaderreum 12 into it, the seal dee SyUadevsaoM 13 by the! »Ippeadichtung 30 2wiecüen the Holee 10 mad the Kelbenetangeateil 16 eowie by the Gleitdiehtang 39 awleohen the Mngbeden 34 nod of Aufleneeite" m BBIM 10 is effected. Here, the sleeve 10 protrudes at least about 30 mm farther from the roller / rod part 16 in order to always ensure reliable sealing. In the further embodiment according to FIG. 5, the sleeve 10 is displaced by the driver aaefe right before the sealing ring 2S \ the fvit »i n * TB axial distance h from the find of the vi & raahnuag 15 · is arranged because there is the sleeve facing away from the ritael 10 reached. In this position of the sleeve 10 ', the sealing ring 28' is at a minimum distance A ¹ from the end face 10 'of the sleeve 10, which is sufficient to ensure a secure seal.

If the! ”Ekausechlag ends, the valve 35 interrupts the Br "elEmittel2a £ tihr to the cylinder rim 12, see that the cylinder space 12 pressureless winä and no servoterafifc works very well.

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If it is then steered in the opposite direction, the pinion 18 moves the drive rod 14 to the left in FIG. 1 and 2 and the valve 35 is the pressure medium supply via the pressure medium line 39 and the pressure medium arranged in the area of the guide bushing 53 to the pressure nozzle 41 to the Cylinder space 13 is free, so that a pressure generating the servo force now acts on piston 17 from the right and which controls the movement the Ai; rod 14 is supported to the left. Here is the sleeve 1O either due to the friction with the piston rod part 16 or due to the stop of the piston 17 against its end face 10 * through the ring base 24 shifted to the left. The shift of the sleeve 10 to the left is interrupted at the latest when the sleeve 10 with the rubber ring 26 arranged on the flange 22 abuts against the shoulder 20. The rubber ring 26 prevents this one Wear and at the same time dampens the impact noise. the the end face 10 'of the sleeve 10 facing the piston 17 closes with the ring base 24 approximately flush when you see the sleeve is in its position shifted furthest to the left, since as a result the cylinder space 12 is optimally used for shifting the piston 17 to the left.

Om the right acting and the left acting servo force Make the same size as possible, the dam piston should facing · end face 10 * of the sleeve 10 kept small are, since see the resulting servo force acting to the right from the pressure force acting on the piston 17 is reduced and the compressive force acting on the sleeve end face results in 10 *. From this it follows that da0 is as thin as possible Wall thickness for the sleeve 10 is to be selected.

When moving the drive rod to the left »at the the stalls of the pin · 27 in the free spaces 27 ·, 27 "between the printing block 18 'and the BItMl 18 nladaroh are applied, the left bellows 48 is expanded, while the right

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Bellows is compressed 48 · The case entsrt Laftdrackonterschiede in the interior of the bellows 48 are via the air line SO, the upper the Anschlußstutizen 51, 52 are connected to the interior of the bellows 48, balanced, so ^ f "ft the Äbfllofrtn iHyyn of the bellows 48 against the spar bars 45 and against the housing 33 can be made dust-tight and airtight.

See the flange 22 of the sleeve to in any position between the first and second shoulders 20 and 21, respectively, while the drive rod 14 is in its straight-ahead position is located, at the beginning of the drive rod movement to the right by rotating the pinion 18, the cylinder chamber 12 is also applied to a hydraulic pressure medium, so that on the piston 17 facing end face 10 'of the sleeve 10 a A compressive force acts that quickly moves the sleeve to the left as far as the stop 22. The signal damping has an effect here through the rubber ring 26 attached to the flange 22 particularly advantageous because, on the one hand, the stop noise and on the other hand, “damage to the thin-walled” sleeve 10 is avoided

Claims (1)

1. Servo vehicle steering device with one of a steering column acted upon pinion which is displaceable in its longitudinal direction with a rack part of a cylinder-like housing arranged drive rod is in engagement, at the two ends protruding from the housing connecting means are provided for articulated connection with tie rods and one piston rod part with one on it has attached piston, in the area of which the housing is one of the piston in an inner one, between the piston and the rack part and an outer cylinder * • Room-divided cylinder, each with a pressure inlet in each end area forms the aa facing away from the rack part End is closed by a guide bushing, through which the piston rod part is slidably and tightly passed is, and find the one facing the rack part is closed by an annular base arranged on the housing, through which a sleeve is sealed in the inner cylinder space is passed through, which see when the rack part is fully advanced into the cylinder at a radial distance from the cylinder wall> and a & t cadleftm · * & α4 naar Atttrtabistanee until Beginning area of the piston rod part extends and with this ί ··; '· ι · ι! ψ * f r is connected all around by a sliding seal, characterized in that a cylindrical recess (19) adjoins the ring base (24) on the side facing away from the cylinder (11), into which the necks (10) from their when fully into the cylinder (11) in the first position assumed by the toothed rack part (24) through the ringbc- j the (24) through into a second position, and that an effective entrainment means (27) is provided between the drive rod (14) and the sleeve (10), due to this the drive rod (14) takes the sleeve (10) with it in the direction of the cylinder (11) before the rack part reaches the end of the sleeve (10) facing the piston (17). 2. Servo vehicle steering device according to claim 1, characterized in that the piston (17) facing The end face (10 *) of the sleeve (10) in the second position is essentially flush with the ring base (24). 3. Servo vehicle steering device according to claim 1 or 2, characterized characterized in that the cylinder-side end face (10 *) of the sleeve (10) when in the first position The sleeve (10) is located essentially at the location of the central position of the piston (17). 4. snrvo £ abxzeugleakvorriebtttng according to claim 1, 2 or 3, characterized in that the cylinder-side end face (10 *) of the sleeve (10) with the piston (17) Can be brought into engagement. 5. Servo vehicle steering device according to one of the preceding Claims, characterized in that the Sleeve (10) has a length which is essentially half that Piston stroke plus the thickness of the ring base · (24). 6. Eervefahreeuflenkvorrichtung according to claim 1, characterized characterized in that the recess (19) in the housing (33) is delimited by attachment files (20, 21), SM ι / vvt ι / • a team »in mAUUs Vorpruaf (82) das mim (10) wraa aUtt Al «KIlM (te) in Aa *« Μ · »taw. iwoifeen etaUung is located. 7 8ervofahffiei ^ leafe * eff * lahttt & a auk Aaepreeh β, AeAarea pkiaoMlehait, te · Ale tartt «teeoalaff ilelM (80) 4araa «la« a Ai UafMelM tear Aatxlrttttaag (14) «Blnfnte fotelt« r (30) te · tentaM · (IS) fAUte Ai · ra ·! «· Te»> Magflteh · (31) «a ten Al · in Ml ·! «ftiotkttuftf 9» f »a tea SyllaAw (11) to afedleatmtea mngteoten (34) τ · ν§Μ · Β «ι Ut. ·· e * rvofafars «tt9leainr« arrlehtttnf aaea one AaAnMh f «k« aaa «le & a« t, Aa · (34) dleht la A * a ayliBdear (11) lgt aaUav rftftiale saaaa «·!« · ein · eifkitdieatstng (38) trlft, Al · nit Aw Ηβίββ (10) la diohteadem »lagriff ateat (13) fgsa AU Atteartanunf (19) 9. Servofabreeuflenkvarriebteng close to the AncprOotra β to 8, thereby gekennaelcbaet _# AaB Αβκ radial «Voreprtmg Aar HBUe (10) by eUaa aada externally presented circumferential Planech (33) gatoierter Ut. 10. Servo vehicle leakage device according to 8, fekeaazeieaaet _f AaB on the flange (33) of the sleeve UO) ela gaamAring (26) aageosAaet is axially aaf both Seltea Aas Plaaaotee (33) 11 · Sesvofahrae & flealcverrlchta & g aaeh eUm der A gekeaaseleaaet darek eiaea Bitaetoer (37) gebdld de? radial from the Zaaastaafeateil (1S) vorsfeeitfc oad alt dem from the cylinder (11) away from the sade of the ffiLLse (1Θ) U entry. ü ^: f ^: f ι i 12. Aervefahrzeuglenkvorriehtttflf according to claim 1.1 / dadureh f ekenfiiiiehait, daft the driver by a across the drive rod (14) and parallel to the Vewahnung (15 ') through-guided pin (27) is formed. 13. ßervofahxteuglenJworrichtung near one of the preceding Jtaeprüehe, characterized in that the Qleitdichtung is formed on the inner wall of the bed (10) ale Dioh * ungehülee (2). 14. eervQfahrzeiaglenkvoirrichtttng nech Aaeprueh 10, dadiiroh gonaeiehnet, deJ the Wehtinehülee (28) In the one facing away from the rack part (13) find one having radially near inside veretehende diaphragm (30). 1%. §Erve £ ahx2euglealrrorrieht "ng mdb a dec Aneprüehe t to 12, gekennaeiehnet dadureh, the iet befeotigt the Qleitdiehtung (2S) on Kolbenetangenteil (16) _r tightly the inner wall of the Sttlse (10) a® slides and dan cylinder chamber (12) against de »The Xenenaraum of the BQlse (10) stretching the 2ahnetang part (15) etodielitet. 16. iervefahrzeaglenlcverrichtueg naoh AneprwÄ 1S, thereby known that the seal through a ·) Is formed, & ex in a around the RoI- be & stangeatell (16) umlauJenitea ftlagnut (32) device is. daetareh geketaazeiehnet , that the ^ staa between the Hi ^ etaaer (27) "& the Bi ^ txmgsriag (28) is somewhat smaller than the length of the BSlse (10).