DE2249113A1 - DISC BRAKE - Google Patents

Description

Patent attorney

HERMANN L. JUNG 757 bathe-bathe

Utdwi0-Wilh "iffr" lmO · Tetefon (07221) 23833 Telegram ": JUPAT Badan-Badwi

M * m Zettftwi ^T * 9

Jg./L/B-926/72 · 4 »October 1972

Disc brake

The invention relates to a disc brake, in particular for 3 ¹ aliraeuge, in the case of one sioh. rotating brake disc connected to the axle or wheel carries at least one friction surface against which a brake pad is pressed.

It has become common in the course of the development of the brakes, that the rotating part of the brake unit, namely the brake disc or the brake drum made of metal is made, whereas the brake pad or the brake hoe is made of a material with high friction coefficient exists, which is then pressed against the friction surfaces of the Brerasacneibe or the brake drum during braking will. Because when braking the kinetic energy is converted into heat and therefore dissipated

409816/0550 -2-

be ciuii, is rni; r. to this u'iejvef; ii ^ ea, the -iäck.-ei ^v .. c of the brake disc ode: ^{1 of} the 3r ·. ^ sti'onnel rnii Ri_ ^ en r, u provided in order to know how to dissipate the heat that is distorting the friction surface to the surrounding air. Brakes with liquid cooling have also been proposed. In each case, however, the rotating or revolving part of the brake was made of metal, against which a brake pad made of a material with a high coefficient of friction sun brakes was pressed. Such a design involves high weight, combined with corresponding costs. This effort is not justified, especially in the case of brakes that are subject to low thermal loads.

The invention is therefore based on the object of creating a simple construction which also has the advantage that the heat-radiating brake body is in the airstream.

The solution to the problem is that the circumferential friction surface is formed by a dimension with a high coefficient of friction and the brake pad is made of metal.

A brake lining ring on a carrier by gluing, etc. is advantageous to form the friction surface. attached.

The advantage of this construction according to the invention lies above all in there; when braking resulting V / ärne i:. · '.veaenö.T ^ ch ^ n in the brake block concentrated, which but ^ .uh Leta.ll ifit and therefore

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BAD OBK3INAL

can tolerate a considerably aön ^ re Teapsrttur, as the brake lining respectively. the material with a high coefficient of friction. However, since it is designed as a ring, depending on the size of the brake pad surface and the speed of rotation, it has a certain amount of time available to cool down again a little. Since 'the material with a high coefficient of friction generally an organic _f ebundene mass DNRs shares which ε- bi only heated to a certain temperature can v / ground without destroying v / ground, ao i -.' T is essential, dai; this material does not need to be heated as high to give the same braking performance. With the previous Bremal constructions, the entire noise was concentrated in the relatively small area and mass of the brake pad or the brake shoe made of the organic material with high friction value. Two further advantages result from the fact that, due to the large lining area, a long lining service life can be expected and that, in contrast to the previous brake discs, the brake pad can expand freely when heated.

In the drawing, an example of the invention Ausführungsforiu darguctellt NND namely 1 shows L-ine-n-section through a Aciisbrerisscheibe, Figure 2 one rieitene.nsicht a Achebreir.sscheibe, Figure 3 a section through a rail with

Brake disc and lireasb ^ cken, FIG. 4 shows a side view of a wheel with a brake shoe,

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3AD ORIGINAL

-M-

According to FIG. 1, a carrier with the ^ abe 11 is pressed open on the axis (not shown) or is fastened in some other way. The hub 11 carries a relatively thin oche disc 12 plus sheet metal or nue guu, v / tlche is covered on both sides with a hinge 13 made of a mass with a high coefficient of friction. The ring 13 is fastened to the disk 12 by means of 14. These rivets are countersunk, since the surfaces 15 of the ring 13 act as relbflochen.

According to Figure 2, the ring consists of a mass with a high coefficient of friction from individual segments 16, which with Rent 14 are riveted to the carrier disk 12.

These brake disks now slide on the friction surface 15 as a brake block a metal block, which in itself is known Way is approximately kidney-shaped and which E.g. made of gray cast iron. But it can also another material can easily be used. So it has in more recent times as Jieibnjötcrial nodular cast iron baw. Gubeison with spheroidal graphite turned out to be very suitable,

According to FIG. 3 and FIG. 4, an ochieuon wheel 24 is to be received designed by Brt.msplatten, whereby the carrier disks 17 made of sheet metal or thin casting material on the paragraphs Id of the wheel disc. On the inner circumference the carrier disk 17 is fastened in a manner known per se with bidding or screwing to the wheel of the truck. The hub 19 is attached.

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BATH

The brake rings are on the carrier before ib ο 17; 2o made of a single material with a high coefficient of friction, which can thus be divided into segments 28 according to FIG. 4, for example. Ge _(-; s, the friction surface 21 of the Bremsacheibe press the brake shoes 22 made of cast iron, which are suspended from suspension brackets 23 "and bildcu a brake caliper with the Brerashebeln 25 8UR further support of the Trägerscheibexi 17 may, for at Radacheibe B. Abetützringe 26 attached.. which prevent the support disks 17 from bending.

As can be seen, the masses on the Had become essential here downsized, as there is no longer a relatively heavy disc or a relatively heavy brake ring made of metal not-T / endig is just a brake ring made of a material with a high coefficient of friction, which is usually a represents organically bound Masee, their specific Weight is considerably lower than ^ etall. This will make the unsprung masses lower, which leads to an improvement in the running properties, ^ ur particularly good heat dissipation the brake shoes 22 are equipped with a large number of fan ribs 27.

The new construction can of course not only be Use Schicnen vehicle brakes, but also in the same vv'eise in motor vehicle brakes, with a Washer made of material with a high friction coefficient is to be which consist of a carrier disk with rings pressed on or fastened on both sides - * sn made of a material with a high coefficient of friction consists.

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Claims (6)

Claims .) / Disc brakes, especially for vehicles, with dec a rotating with the Achfc or the: Λαύ connected brake disc at least one Tteibf laughs, tr ^: i; t, ^ egen a 3rr, n block is pressed, dadurc-., Marked , dai: the circumferential fieibfl-'iciic (15121) from a! .lasse with high friction .'ert rjt-bi Ldt, t and the brake block; (22) is made of metal. 2.) Disc brake according to claim 1, characterized in that to form the lieibflache. (l ^r ^, 2l) a Brenisbel & grin ^ (13 »2o) is attached to a carrier (13,16) by clubs, offer etc. 3.) Disc brake according to claim 1 and 2, characterized n & - kennsseichnet that the brake lining cus consists of several, but at least two rfegmenten (16). 4.) Disc brake _{according to} claims 1-3, characterized in that the carrier (12) is designed as a sheet metal disc. 5.) Disc brake according to spoke 1-4, characterized in that that the carrier is divided into segments i ^ t, where 09816/0550 ^; '' ■ Qh ^ · ■ '- ^: - .. BAD ORIGINAL to each Drenislielagse ^ mtnt a Tri ^ jer ^ eg.'nent is assigned. 6.) Disc brake according to claim lb _t, characterized in that the brake pad (22) consists of cast iron, nodular cast iron or the like and is formed with a plurality of fan ribs. A09816 / 0550 BATH