DE1977256U - INDEPENDENT ADJUSTMENT DEVICE. - Google Patents

Description

It is an automatic adjustment device, in particular known for hydraulically operated disc brakes of motor vehicles, which act from a piston and cylinder There is a locking mechanism with a compression spring, the atif one Acts spring stop, which is arranged movably in the piston, that its movement in the direction of the brake disc the friction element of the locking mechanism and, in the direction of release, the force that each counteracts. With one with one of these Adjusting device equipped disc brake are the brake shoe by small deflections of the disc, for example as a result of steering movements, from the brake disc shut down after releasing the brake »If the brake disc deflects too much, as is the case, for example, with strong Stop cornering, the piston gives way against the force of the ■ everyone and is supported by it except for the disc clearance brought up to the brake disc again when the rash of the disc is due to a corresponding hatred. The invention is intended to ensure that the removal of the piston from the disc by the amount of Brake clearance no longer caused by a deflection of 'the' brake disc, but by the one released when the brake is released elastic force of the sealing ring takes place.

In known disc brakes, this elastic effect of the sealing ring on the piston is already used.

In the drawing is an embodiment of the Hachsteil-

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shown in section.

Are due Br * iia ^ h & U8 * «lit 1, dl« Zyliiiderbbohrung «dt 2, the piston bit 3 »41 * brake shoe» it 4 to the breech disk «It 5 g« fc «iMi * # i« fc »f * · I» the Βΐ-imetehÄu ·· 1 i * t «in rubbing if t 6 quickly deaf, the« ittig in dl · cylinder bore 2 tmd in «ifitfr Attenehanutg 7 d ·» piston * r »r runs. d «m Reibutift ύ are di · R * ibrihgo β

The. c> p

# teb.t au * der Druekfeder 9 tuid d # «| f« deran «ehlas» der

tilt Io gekennaieiahitet int "Itt seltsselzten s" t * t of the Fed "r2waehl * tf 1o aue an 8aeis11" the cap 12 and the sliding sleeve 13 toeammeh. The retaining disk U is in a hat 15 itt timr ■. ■ A ^ e "#h" ene '7 leicht eatl * er "1lJÄi · inserted" füst "The cap 12 has lanes 10" with de & en el "in a groove 17 der Bäei "11 ikaeh Art" ine "" Bajoaettee "" baltea is, Me Druokfed + r 9 is "vieohen the bottom 1β of the cap 12 and'a flange 19 of the sliding sleeve 13 -eiägeepaimt so that the spring 9 the oleithuiee 13" effen di «» one side and the bail «11 sweep the ader side ύ * τ Re! bring 8 press, ^ d * r öttwmg j feat der Fedaraaeohlae 16 a game» that with *

Between the end of 20 of the sliding sleeve 13 and the bottom 21 of the Perception 7 means that there is a slight mobility of the large

In the wall <i # ir cylinder bore 2 i * t in a round groove 22 a p-rinar 23 »ntjbaltvn through which the piston 3 sweep the Bore 2 sealed i * t *,

The Bresme is divided into the LÖeeetelltmÄ dmrge. The O-Rin « ₍ 23 i« t relaxes and runs on the left edge of the groove 22. The piston 3 i * t falls off the disk 5 and the. z "with a light

Impact of the disk applied to the piston face.

When braking, the piston 3 in the cylinder bore 2 is acted upon with pressure medium and displaced in the direction of the brake disc 5. Here, the "air play" is canceled, so that the brake shoe k is in engagement with the brake disk 5. The O-ring 23 is displaced into the left half of the groove 22 by pressure medium which passes between the piston 3 and the wall of the cylinder bore 2 and is elastically deformed so that it is both against the left wall of the groove 22 and against the surface of the piston 3 is pressed. D * the clearance »* z ^{M is} smaller than the clearance" x ^H , the lining of the brake shoe k can suffer a certain amount of wear until the retaining disk 14 comes to rest on the base 11. The mobility "y" is thereby increased even further. If the piston 3 protrudes further out of the bore 2 with increasing brake wear, the retaining disc Ί4 takes the spring stop 1o with it and moves the friction rings 8 on the pin 6 * All these movements do not affect the spring 9 .

An elastic force is stored in the O-ring 23, which is released when the brake is released. When the brake is released, the O-ring 23 therefore takes the piston with it by the amount of the clearance "ss" and places it from the disk 5 into the cylinder bore 2 jsurüek. A small Seheibschlag brings the jaw k _t, which has been detached from the face of the piston 3, to rest on the piston 3 again.

larger Seheibenschlag is absorbed by the compression spring 9 up to the amount of mobility "y", since the frictional force of the rings 8 resists their pressure when the piston moves the spring stop Io to the right. Runs the

Disc,

Disk, b.el * piel * we-i '# e after completion .de * Dttrchfafcreni e.ime * ¹ sharpen curve · "again" ohl & gfrei, then the spring spring 9 brings the piston 3 with the brake shoe 4 up to the lift play * z ⁿ to the Breateeeheibe 5 *

In the event of a disc strike, which exceeds the "degree of mobility" y *, the piston 3 presses an inner end face SI via the hill β e 13 against the friction rings β and moves them into the interior of the cylinder bore 2 the compression spring 9 is tightened until the play "x" is canceled. If the brake disc 5 returns to its normal running plane, the play "x * is restored *. The mobility * y * is then reduced and the release" ^{picks up} ss ⁿ increased by the same amount.

Claims (1)

S chut zans prttch Automatic lachstellvo! "Direction, in particular for hydraulically operated disc brakes" of motor vehicles, with an external piston and cylinder effective G-esjDerre and with a compression spring that acts on a spring stop which is arranged in the piston so movably that its movement in Sighting of the brake disc the integral member of the lock and in the released position counteracts the force of the spring, thereby g el: e η η ζ calibrated η et that between piston (3) and cylinder (2) in a cap (22) the .Saddle housing (1) a sealing ring (25) is inserted, which surrounds the piston (3) with pretension, .wherein the cap (22) is dimensioned so that it fits the sealing ring (2p). Allowed little freedom of movement in axial sighting.