DE1864225U - HYDRAULIC SINGLE TUBE SHOCK ABSORBER, IN PARTICULAR FOR VEHICLES. - Google Patents

Description

_DR , HG.H, TURIES ί

PATENT ATTORNEY _the 24,10.1962

VA

Christian M.L.L. Bourcier de Carbon, Heuilly-sur-legs (France!

64 “Boulevard Maurice Barrys

"Hydraulic Mnrohr-S t p.asdäiapf er> especially for motor vehicles">

The nouorung refers to a particular one for motor vehicles bestii & aten, hydraulic single-tube DtossdSiapfer, the one containing a compensation space and damping fluid Cylinder, a region of the dampening fluid moved back and forth therein, throttle openings for the ingestion of fluids having Därapfungskolben and one against the Kolbenatangendurohtrittsende dea cylinder's resiliently supported brake ring disk owns that when a certain amount of travel is exceeded the piston completely or partially covers the drop openings * In this way the damping resistance of the piston is the latter into a school that goes beyond his normal work Aiiefahrstellung reached, wesjentlioh enlarged by the. Droseel opening of the piston when it hits the Breiasringi »oh © ibe at least partially covered or closed, the piston setat then «was together with the

noHiaenen brake ring disc its outward movement by a '

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a certain sweeping length, but the opposite of this movement Attenuation resistance is unequal, greater alB during the normal working movements of the damping piston. The opposite of the piston rod penetration end of the cylinder tube resiliently supported pulp ring disc thus forms So to a certain extent a hydraulic brake.

With the known Sinrohr shock absorbers of the above type, which are compared to the well-known multi-tube shock absorbers with a ring-cylindrical smell of the Auegleiohskaiamor concentrically surrounding the damping fluid for the immersing piston rod volume displaced damping fluid above all because of their much simpler ones Differentiate between structure and operationally reliable working methods, if the brake ring disc is old »axially displaceable on the piston rod arranged, L-shaped sleeve in cross-section, those on a cylindrical one surrounding the piston rod Coil spring rests loosely, which in turn is attached to a in the cylinder space protruding approach on Kolbonetangendurohtritteende end rests. It is between the brake ring disc and the cap-shaped piston nooh one Valve ring disc axially displaceable on the piston rod provided that the extension movements of the piston and piston rod exceeding a certain stroke strikes against the sleeve-shaped pulley and the latter, contrary to their peder effect, doesn’t .. Sine such Development of hydraulic piston mash agents required but not only a considerable structural effort but also require additional space for their accommodation

'i

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in Einrohrdörapfer. They are also here because of the loee Breasel ducks lying on top of each other and their in the Fahrbttrdeb. unavoidable vibrations annoying noise blinds do not avoid au.

In order to eliminate the above-mentioned deficiencies, the innovation looks at a hydraulic single-pipe Stoesd & apfer type mentioned at the beginning, dasβ the brake ring disc on the they support against the cylinder end and are connected to it Spring attached in a self-supporting manner and only to the side of the 2> ylinder wall led let. In this way one comes to an essential Simpler designed, spatially more compact and noiselessly working hydraulic plate piston brake, which at Exceeding a certain extension stroke of the piston is effective will,

According to a further, particularly advantageous feature after the hiring lat the self-supporting the brake ring disc The spring is designed as a conical helical spring, which at its smaller diameter end in an annular groove at the end of the cylinder located! conical ötützkörpers held and at their lsi diameter the larger booth in the preferably "on. £ uncrtetoff, a.B, Polyaaid, consisting of «BreßBrlngeoheibe is embedded · Through the faculty of both the the Breuer Inge plate-bearing coil spring as well as yours support body provided on the piston rod end of the step it is ensured that the effective piston stroke through the '; Installation of the cantilevered by the conical coil spring; held Breasring disc is practically not shortened, so ' that «does not increase the length of the tubular shock absorber needs to become.

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The characteristics of the new piston-Übarhubbrease can depending on the expected operating conditions of the Monotube shock absorbers can be changed to a large extent »for example in that »special throttle openings are provided in the brake ring disc, which have a smaller cross-section all of the pax connection piston are to be measured and to be arranged in such a way are »that they remain open even when the piston hits the brake ring disk it by arranging the brake ring disc at a greater or lesser distance from the one forming the piston rod passage forehead of the dampening alder in hand »the increased sooner or later let the hydraulic braking effect occur »thus the normal working stroke of the damping piston to narrow accordingly to expand.

The drawing shows an exemplary embodiment of a hydropneumatic single-tube shock absorber designed according to the innovation shown »where

Fifi. 1 shows the new shock absorber in an axial longitudinal section "and" was with the damping piston in its normal working position, while Ei ^. 2 one of the? Ig. ! ^ corresponding file shows »in which, however, the damping piston is in its extended end position.

The single-tube Stoeedärapfer shown in Pig, 1 and 2 consists essentially of the cylinder housing «1 and the damping piston 2, which can be reciprocated in it, its piston rod 3 by a multilayer seal 4

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and a closing cap 5 is passed through at one end of the cylinder and at its free tube 6 has a veraubgewinde eum a mounting element articulated on the chassis Leaf or very helical compression springs or similar suspension means resiliently supported on the chassis serves a separating piston 3 located in the cylinder housing 1 divides the inside of the cylinder into two sub-chamber spaces 9 or 10, of which the former is filled with damping fluid and the latter with a pressurized gas. The Druekgasraua 10 serves to compensate for the fluid volume displaced by the more or less far retraction of the piston rod 5. Droseel openings 11 are provided in the vaporization piston 2 through valve spring washers 12 baw. 1? are covered to a greater or lesser extent and thus produce the desired damping effect during normal ferry operations »

Between the Döapfungskolben 2 and the end wall of the cylinder 1, which forms the piston rod passage, a slidably arranged pulp ring sleeve 4 is provided, which surrounds the piston rod 3 at a distance normally held at a certain distance from the body 16 (J? ig. 1) «The ring disk 14 besltat,

on its side facing the piston 2, one of the top side thereof

adapted shape, such that the Drosael openings 11 at

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When the piston 2 hits the pulp slab 14, the latter completely or partially covers or closes it 2 and, in accordance with the enlargement, there was increased resistance to resistance due to the barrel of the cover of the piston flow openings 11. The onset of hydraulic braking can take place more or less early, depending on the arrangement of the brake ring disc 14 in the cylinder. Auoh iat it oiöglloh »to change the outlet of the hydraulic iaohon braking» that roan in the ring disk 14 »for example at its circumference» provides »Droaeelöffnungen or -sohlitae 17» which have a smaller cross-section than the piston 2 located nozzle openings 11 and which remain open when the piston 2 hits the annular disk 14. Bo can also be reached in this way in a limited amount of time during the common Ausfahrbfwegung of the Döjnkungekolbens 2 and u ^ v from it "itgenoiaaenen ring disk 14" in their end position netae "- the same 2 and the ring disk 14 is in the position shown in Fig. 2 *

Claims (1)

24.10.1962 «ryWUÜ 33« 9 * 1 & JW -7- L "J Schutganeprüohe t 1. Hydraulic monotube StossaSapfer, instesondere for Kraftfahraeuge, with a Ausglelchsraua and Dämpfungeflüssigkeit containing cylinder Onea therein in the area of damping fluid reciprocating, s Drosaelöffnungen for Däxapfungaflüaaigkoit having Dämpfungskol- \> and a resiliently supported against the cylinder KolTöenBtangendurchtrittsende Brake ring disc which completely or partially covers the throttle openings of the piston when a certain extension stroke is exceeded, characterized in that the brake ring disc (14) is attached in a cantilevered manner to the spring (15) which supports it against the cylinder end and is connected to it, and only to the Zyllnderwand is led sideways. 2 »iäinrohr shock absorber according to claim 1, characterized in that that the brake ring disc (14) Self-supporting spring designed as a conical helical spring (IS) is that at its »smaller diameter end la an annular groove of a conical one located at the end of the cylinder ütütakörpers (16) held and at their larger in diameter-ar Böde "in those made of. Plastic, preferably polyamide Brake ring disc (14) is embedded.