DE1656633U - FLEXIBLE DISC VALVE FOR THE PISTON OF LIQUID SHOCK DAMPERS. - Google Patents

Description

m 25290-25 1

Patent attorney ^

BipL4ng. E. Vorwerk Jj

Bin-Charicüsnburg 4 : 'J -

Giesebreohtsir. 7th

gnu

General Mi tors Corporation · 24 · 3 · 55

Yh-96

Flexible disk valve for the piston of PlusEigkeitB shock absorbers »

The invention relates to Sciieibeiiventile TWC the piston tone Fliis sigkeitsBtoissälnipfern _s which are mounted in the center on the face of the piston with flexible Tentilscheiben * These "valves regulate the! Fluid flow through the plunger passages characterized in that the band surfaces of the Te nt ils before ib en τόη of liquid flowing through will bent away from the piston rim the discs assume here under the action of I ¹ IuSsigkeitε-druekes cup-G-estalt. such Tetitilscheiben are generally pressed in. of the piston assembly of these with a predetermined pressure ^ eo Daiss lifting of the adjacent part is prevented by the piston, while the other parts remain free and can bend away from the piston to regulate the flow of the liquid through the piston *

■■■ / / ■ '■ ".-" ■■ ■ "- *)

According to the invention Λΐί the firm contact of the valve disc effected on the piston by a metal disc which has a straight edge running along a chord around which the free part of the valve disc according to the pressure of the liquid is turned. In the middle of the arch protruding over the edge, the valve disc is lifted off first. If the If the pressure increases, see the rest of the roll that protrudes over the edge Gradually part to the edge of the metal disc. As the pressure decreases, the disk lays down on its bits in the same way Wise up again. As the pressure decreases, she lies on top of hers Sit up again in the same way. In a testing machine revealed the measurement of the stroke when using a valve according to the invention a smooth sinusoidal dependence on the pressure difference: Proof of the shock absorber's smooth gait »

On the drawing some execution fora of the Disc valve for a shock absorber shown

Fig. 1 is a longitudinal section of a shock absorber with a disk valve according to the invention,

Fig. 2 shows the valve cite ibe of Fig. 1 in a plan view, Fig. 3 and 4 modifications of the valve disk according to Fig.

The cylinder 2e of the S tos β damper is at the bottom Linde over a sealing cap 2L with the liquid container 22 in connection, which is formed by a drill 23 that is attached to a serving as a support for the cylinder Kep pe 24 attached is »A valve unit is built into the cover 21,

that is the interior of the cylinder with the storage container connects »

The self-sufficient seal 25 of the piston 25 is guided in an upper closure cover of the cylinder. The piston is with two concentric legs from Dar chlilles. 2? and 28i & r provided the liquid. Aar the upper side of the piston a flexible Tentilseheibe 29 is pressed by means of a spring washer Jo, which covers only the outer row of the passages; the inner row of passages remains open, since the washer 29 and the spring washer are perforated accordingly.

The lower side of the piston 26 has a protruding outer edge 31 »which surrounds the passages 28. The apex of the same lies in the same plane with a hub-like inner edge 32 of the piston, so that an inlet channel 33 is formed, which E. with all inner passages 28 in Yertihöung is. This channel is covered by a disk 35 which rests against the inner rim 32 and outer rim 31 of the bulb. Sine seated on the piston rod 25 pulley 36 (? IS × 2) of predetermined thickness is used as a support for the disc 35 "^ ^r on this disc 36 is cut off a segment 37 so that this obtains a straight edge to the tendon 3B. As a result, the part of the disc 35f which lies above the segment surface is unsupported and can bend around the edge 35. A rigid or semi-rigid round Seheibe ^ sitting on the piston rod 25 forms a support for the discs 36 * The diameter of the

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Disk 30 eats somewhat larger than that of disks 35 by 36. The firm connection of the disk 39 to the disk 36, the flexible one Tent Ils c he ib * 35 ·, of the piston 26 .., the valve disc φ and the spring 3o with the piston rod 25 is via a nut 4o and a washer supported on a shoulder 42 of the piston rod 41 between the spring 3 © and the shoulder 42 made.

When the piston 26 is moved downward (FIG · I) - _# the Fltis is εigkeit pressed 27 in des2yl ± Direction space above the piston below the piston through the outer passages, wherein the Yentilseheibe 29 against the Wiskung the spring 3o open wirö "Since If the piston rod 25 is located in the upper cylinder space, not all of the fluid displaced from the lower cylinder space can be absorbed by the upper cylinder space, so that part of the fluid is removed from the lower cylinder space through a p'berdruisk-DiOEselventil % o pressed into the storage container Td rd,

As the piston moves upward, liquid under pressure flows through the internal passages 26 of the piston and attempts to lift the valve disc 35. Since this is but on its entire surface by the rigid disk 36 firmly placed against the annular rib 31, only one segment of the outer disk 35, like that of the disk 36 (FIG. 2), can bend over under the action of the fluid pressure At a certain pressure in the annular channel 33 , the free edge of the vectile begins to lift off the rib 31. When the fluid flow rises, the flexible yentil disc rolls more and more butted from the rib "%"

ab * and that iamer parallel to the tendon 38 öer rigid disk ■ jS · With decreasing pressure, EiA rolls the never supported surface in the same way onto the hanging again. This progressive movement of the free part of the disc 35 ⁴ VOO. and its seat 31 on the piston will give a smooth transition of StossäSmpf ers unlike & em stoFsweisen gear at sclmappsenussartiger Tentilbe ^ ath ·

The rigid ßeäeibe 39 limits the opening width of the tent ils and prevents εο ₉ that the yentil suffers in the event of an excessive & plus-siglceitsoruelies scn.aden.

With simple and cheap modifications of the piston unit, the gear of the shock absorber can be adapted to the different operating conditions. _? which produces a summarized harder resistance, support screws 136 according to FIG. 3 can be used 236 according to FIG. 4.

• The disc 136 leaves two segments of the valve disc

on opposite sides free and therefore allows one free flow through the piston.

The triangular shaped disk 236 of FIG. 4 restricts the flow through the piston even less and Tremens the resistance even further. In some cases you can the desired changes in resistance through the use of TentiX disk 35 made of thinner, more flexible material

will. & ε can auen to enlarge the ^ iderEtanäee Layered Y-valve sacks 35 can be installed.

Further, the resistance dee Stoesdäapfers eucli by use of oil more lukewarm kang he SSI ekeren Stützecheiben 36, be changed or 2JS dureii change in the distance "* geradai the side edges JB _9138, 38 from the center of SoJieiben.

Thereby the roughness becomes, the eatability of the shock absorber eueii to the extent that the Ivotwenöigfeeit, narrow " Tolerances and constant pressure must be adhered to this is the case with the various tentacle trajectories of known designs , 7 / Eternally reduced "if nothing is completely eliminated"

Claims (2)

;> '.' Ä '· a η s ρ r S ch e X "disc valve for hydraulic shock absorbers" with an attached at £ olbea support & elieifee for elastlBcJie Tejitilsciisibe to cover the Kolbenoarc3alässe _f äaötirci. in that the Tragseileibe (36, 1J56, 236} or a jneJxrere naeJi a Sekrie enöe extending straight edges (38, 136, has 238) to check the animals on oils straight edge came protruding part turn of the flexible plate. 2. Sdheibenrentil naeb- spoke l _f dadurcii gefceanzeichen; that the support disc (36, 136, 236) supported by a disc (39), the diameter of which is somewhat larger, is άβτ DiirchmeEser the Yentil disc ünfi its T rags c hot.