DE7630598U1 - DEVICE FOR FASTENING ROLLING BELTS, IN PARTICULAR ON THE INNER WALL OF A BRAKE CYLINDER - Google Patents

Description

Munich, September 22nd, 1976 TJ / 1-'hn / be f

-BREMSE UiIBH, dOOO Munich 40, Moosacher Strasse öü

Device for fastening the bellows * in particular to the Inner wall of a brake cylinder

The invention relates to a device for fastening the bellows, in particular on the inner wall of a brake cylinder, such a combination cylinder for a wedge-type brake etc.

It is known to estigen a Hollbalg to Lei on a piston rod extending from a so-called Memcransekundärrauii of a brake cylinder and to hold its outer circumference on the inner wall of the brake cylinder, in such a way that the rolling bellows occupies the annular space between the piston rod and the inner wall and thus the ingress of dirt or moisture in the secondary space. Thus, in a known construction, the outer circumference of the Hollbalgs is attached to the extension of a so-called support tube, which extends slightly at the end of the piston rod of a service brake cylinder and is marked with "Lei". Cylinder is connected. Lie connection au ;; ίίυ J.lba Lj, s with the extension of the TrafsTonι ·;. ·., ini :. > au.3i ^r /: b;. ι de I. That the preached end de? RoI Lbalgltorp «rs engages in a groove located on the outer circumference of the tubular extension and is held in this. In the event of heavy pulling or changing

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load on the rolling bellows, it can happen that its thickened end from the groove of the tubular extension pops out on the inner wall of the brake cylinder; consequently, foreign particles and liquid etc. can enter the interior of the diaphragm secondary space of the service brake cylinder penetration.

For reasons of space, the groove for the thickened roll bellows cannot be cut any deeper because the support tube has only a predetermined wall thickness at its end extending into the interior of the brake cylinder. For structural reasons, this wall thickness cannot be selected to be arbitrarily large.

On this basis, the object of the present invention is to provide a device for fastening the bellows to create, which ensures that the rolling bellows in spite of heavy loads and also in spite of large temperature differences does not jump out of its fastening on the inner wall of the Brens cylinder.

The solution to this problem is characterized by the features according to the characterizing part of the patent claim Ί. Appropriate further developments and refinements are listed in further patent claims.

The bellows attachment according to the invention is very safe

7630598 13.0177

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rather, because the button ring holds the hol Ibal ^ wu]: · :: u:; re; ohend deep behind ^ reif ι., um ^ icncriiuüLellmi, l.-iü diener η ι. ul from deia Rauiu .- .. wipe Kn.-ipfring and Iiuiunwaiui can jump out.

The button ring is preferably made of plastic or Hard rubber etc. comparable elastic material and can be made in 3 very cheap way. Due to its elasticity, it can with sufficient pretension be snapped into its holding position, so that it is also caused by temperature changes minor dimensional changes does not lose its holding power.

The invention is described below on the basis of exemplary embodiments with reference to the accompanying drawings explained.

1 is a partial sectional view of a combination cylinder incorporating the bellows attachment according to the invention for a wedge brake;

Fig. 2 is an enlarged sectional view of a Knöpfringes according to a first Aus l'üJ rung £ form;

Fig. 3 is a schematic diagram, likewise enlarged a button ring enjoys a further embodiment according to the invention.

7630598 01/13/77

. λ ii Fig 1, the Ze-i.cLjLiuuf-j ^ iu .chui i; c-Tt: ■ iIansicht the so-called ßetriebsDrerciSis ylind ο ■■ I ines υ ^{Breins-Kouibi:.;} .yy-.1 Indians reproduced. The inner rua L: · de; .. operational pulp cylinder acted upon by an iSeiubran 2 agable disk 3 is connected to a piston rod 4, which is used to actuate a pulp organ, in the present case for actuation; The piston rod is surrounded at its left end according to FIG. 1 by a guide 5, which is permeable to dust and moisture. Within the service brake cylinder 1, the piston rod 4 carries a so-called Holloalg 6 of known construction. The rolling bellows 6 is sucked up about the piston rod 4 with a seal and. extends sum limit of the operating brake: _ cylinder, preferably derail; that it is on the egg.id of a support tube extending into the brake cylinder? can be added.

The support tube '] is equipped with an extension 8 on the right-hand end according to FIG. At the Aus.tMihrun ^ yi'orii! . in FIG 2. is ever sj.ch uu a aai Außenumfan ^ vo.rgesehene groove 9 while fi _r c ": - a sa iMiainuiii.l'antv the extension ausgeh.:lue te Nu! 1 ^ .; vn ede ir; .i! ■:. ü: aiev.iM · Nut i ^ t ge m'u'Z tier Er.i'indu.ii! -; -.ίι) Κηομί'η . '^ i' dc \>: s ι ,. :; t; der l \ riöp.L '~ ring bt.'Stfut v (ir:, Ui'; swe i.st: au;.; Kunt; Ls to .ft or elastomerem Nateria'J or Harl-i'-uuimi etc . and indicates ': ". owohl in the executionx" uigf. ik'rni nacn Kig. - a'; ■ ·. aucti iii der Ausfühmif;!.> -

7630598 13.0177

l'oj'ia nach! '"it ¹ ;. :> oinen around inside or outside aura ... button fringes a corresponding shoulder 13 (! • 'if / ;. Z) or V \ (I ¹ Mg. J>) behind grooves on the groove 9 or 10. The button ring is therefore on the support tube ⁴ 7 pushed on or pressed into this (Fig. 3) »until the hook part engages behind elastically in the aforementioned manner.

The button ring 11 is used to move the Kollbalg 6 against the inner wall 15 of the operating pressure cylinder or comparable The brake cylinder must be kept absolutely tight so that dirt or moisture cannot penetrate into the Inside of the brake cylinder is prevented. Both in the embodiment according to FIG. 2 and in the one according to FIG. For this purpose, a projection 16 extends radially outward from the Kiiöpfring 11, such that the thickened end 17 of the roll bellows can no longer be pulled out of the seam between the button ring and the inner wall. The button ring is therefore pressed against the end of the support tube with Eollbalg reaching behind until the elastic and mutual locking between the button ring and the ßollbalg consists of the fastening according to the invention of the rolling bellows is absolutely safe both at extremely low temperatures and at high temperatures »At low Temperatures, the button ring 11 shrinks somewhat, so that in the embodiment of FIG

763059g 01/13/77

Extension 8 of the support tube 7 is shrunk on 5 this slight shrinkage is not enough, however, to
to cause unintentional loosening of the button ring according to the embodiment according to FIG
this construction of the button ring on the inner circumference of the
Support tube is located. The mode of action is reversed in the case of strong heating. In no case does a thermally induced loosening or loosening of the seat between button ring 11 and support tube 7 occur, since the hook part 12 engages behind sufficiently deep to avoid loosening and because the button ring can also be pushed into its seat with sufficient pretension.

The button ring can also be used inside a brake cylinder without using a θϊηβε support tube; in
In this case, instead of the extension 8, a collar or extension is provided on the inner wall of the cylinder, which is equipped in the same way with an inner or outer groove
to be attached by means of a button ring to a projection of the piston rod provided for this purpose.

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7630598 13.81.77

Munich, 2ί \ Ί. "\ ^Ι ;) '/ ί> '! '!.' i-hn / bo

-1377- ^/!

B eauga ζ eic Ix e η

2 a membrane

3 = washer

4 = piston rod

5 ³ Leadership

6 ■ =. Hollbalg

7 * support tube

8 = extension

9 = groove

10 «groove

11 a button ring

12 = hook part

13 = shoulder

14 = shoulder 15 = inner wall

16 = radial Aja theorem

17 = end

7630598 01/13/77

Claims (1)

/, don ? .ίϊ. * -). TKI-an / be ) -13V7- V U ¹¹¹¹ L ai! Fc "fc I) η u μ r ii c Ji e Ί) device for lioiibalgbei'eatiguni ';, inabeaondere oil of the inner wall of a brake cylinder door, ^ ekeruizeichnet formed by a quill on the inner wall Approach elastic interlocking and the bead of the Rolling bellows (6) with a seal form-fit against the inner wall of the brake cylinder pressing button (11). 2) Device according to claim 1, characterized in that that the approach from the slightly extending into the interior of the brake cylinder extension (8) of a supporting tube (7) which is connected to the brake cylinder and guiding the piston rod (4) a groove (9) is formed on the outer circumference of the extension (8), in which a groove on the inner circumference of the button ring (11) located r hook part (12) engages elastically, and that a bellows bead on the button ring Radial approach reaching behind and pressing against the inner wall of the brake cylinder with a seal (16) is designed, 3) Device according to claim, characterized in that the approach as a f.; E ι ± λ &:> ugi: -; o ii: the interior »of the brake cylinder is c rs; rüciuinae extension (.ti. A tra ^ tube ( 7 ) best. We Lon **. · The piston rod · (4) guides and with the brake -.: \ Ii u ■ <. ■ '- · ι ..nderi lot, 7630598 13.81.77 that at inn.enuin.fa ng of \ fnr \ ijnr; u ι. ang Oine JNut au) .; gobildot IbL, j ι which an on AuiienunilOui ^'1, doe Knop J.-ringeH au £ 3gebildeter liakouLeil ela :; t; i :: ch oiu ^_t:; .rei.rL, ⁿ that from a Knüpfring the f3al ^, wuJ.Bt; transversal urid this under sealing against the
Innonw xid of the brake cylinders pressing approach extends radially directed. ^) Device according to one of the preceding claims, characterized in that the button ring (11) consists of plastic. 5) Device according to one of the preceding claims, characterized in that the button ring made of rubber material consists. 7.J3Ü59I 01/13/77