DE6608155U - POT COLLAR FOR HYDRAULIC PISTON. - Google Patents

Description

Munich, December 8th, 1967

P-le / construction.

- 813-

YMÖSRSSKISE GmbH * H., 8C00 Munich 13, Moosacherstr. 80

Pot seal for Eydraulüc-Xolberi.

Γ The innovation concerns a cup seal for hydraulic

j Pistons »in particular pistons of hydraulic master cylinders

Motor vehicle brake systems, made with a sealing body

; elastic material and a support ring made of rigid material, the die body having a ring-like or disk-like, flat bottom part and a seal _c . lip and the sealing lip near the bottom part is essentially cylindrical, from over the circumference evenly

distributed axially directed grooves interrupted section [ and following this an annular groove as well as an un-

tensioned condition of the pot flange widening conically, having section ending with a sealing edge.

Such pot fringe chains are already known. The support ring is vulcanized into the diaphragm or onto others Way r. With this, inextricably linked. The hornlessness of the This makes the cup cuff more difficult and expensive,

j -Z-

In the case of master cylinders of hydraulic motor vehicle brake systems the hydraulic pistons have to move radially into the master cylinder leading them when braking is initiated Grind the confluent sniffer bore. Palis, if the pressure builds up rapidly in the hydraulic system, this pressure deforms the cup seal and can their sealing lip be slightly inserted into the mouth of the

press in beanrng. Even if the opening of the sniffer hole is very well deburred and rounded, this causes heavy wear as the cup collar continues to stroke. The known rounding of the transition from the outer diameter of the cuff to the cuff base occurs here. The weakening of the cuff as a result of this failure There may be a crack in the ice, eg breaking the cuff to the pole to have. The well-known pot seals with incorporated 'Support rings are also subject to this wear and tear.

The innovation is based on the task of creating a pot To create a cuff of the type mentioned at the beginning, rzelche with the least amount of effort required to create the above-mentioned Yersehleißerscheirmng does not show "

This task -sS-rd solved after the control by that the support ring is essentially 37?

- Forms a cylindrical section of the sight lip

66081SS and 6.71

includes play-free and with arranged at one end, radially inwardly running, bead-like projections engages in the ring groove «,

In a drawing, an exemplary embodiment of a renewably designed cup seal is shown _f and ziigt

• Pig 1 the complete pot seal, Pig 2 the sealing body and

3 the support ring in section and in plan.

_{According to Pig o} 2, the sealing body 1 consists of a ring-like, flat bottom part 2, on the inner and outer sides of which a sealing lip 3 or 4 is attached. The radially inner sealing lip 3 has an inner surface 6 that corresponds to the jacket of a conical structure and ends with a sealing edge 5. The radially outer sealing lip 4 has near the base part 2 an AbSGhBit%? on “A * i -the cylindrical section 7 closes a Hingnut S and this is followed by Iv. untensioned state of the cuff conically widening, Eit a JDichtkanibe 9 ending portion 10. The cylindrical AT3Sclmiti; 7 r; eis axially directed grooves 11 at ^ s which are smoothly distributed over its circumference and open into the Hingimt S.

660811524.8.71

The support ring 14, made for example of metal has a thin-walled, cylindrical l.iantel part 15, j · the one at its one axial endo over its circumference ! '' evenly distributed inwardly protruding, bead-like

depressed projections 16 carries. Otherwise it's off Fig. 3 shows the design of the support ring can be removed from the tube. Of the

The inner diameter of the support ring corresponds to the outer diameter of the cylindrical section 7 of the sealing body

'■ ■ ¹ *

When the sealing body 1 and the support ring 14 are joined together, the latter is tied onto the cylindrical section 7 of the sealing body 1 in such a way that the projections 16 engage in the annular groove 8. The support ring 14 then encompasses the cylindrical section 7 of the sealing body 1 _c In Pig without play. 1 shows this state of the cup seal. It can be seen that when the Tcpfmanschette is

Sniffing hole closes. The admonished at the beginning The wear process can therefore no longer occur. Sin Overflow cL ^ s HySraulilrmeditms — irc through the the 'Topfisa ^ cuff "The hats 1U can access the hydraulic equipment from the sc-a-side

[of the head collar to the ring groove 8 and from the ring groove S

in the well-known "« ise about the toh cylinder falling off

Top flange cuff gel

.1 .

Claims (1)

Munich, S.12.195? P-Le / 3au. O / -S - Protection claims for Hvdraulik-ifolbeii, in particular Piston forward? Master cylinder of hydraulic vehicle fuel oil systems, with a ™ sealing body made of elastic Material and a support ring s. ^ S rigid material, wherein the sealing body is ring-like or disk-like flat bottom part and one on its outer circumference attached Lichtli-pe and the Dichtlirpe close of the bottom part has a cylindrical in the front, From evenly distributed over the circumference, axially directed grooves interrupted section and on this following an annular groove and an ir: unstressed Condition of the cup seal is conical having widening section ending with a sealing edge, characterized in that the support ring (14) is essentially cylindrical, the cylindrical section (7) of the viewing lip (4) without play and with one end arranged at its ™ radially inwardly protruding, peculiar projections (16) engages in the annular groove (8),