DE2759209C2 - Formation of the sealing ring grooves in hydraulic application units of fully lined disc brakes - Google Patents

Description

I ³

i | be reduced by the dimension "a". This allows

Jl constant wear stroke the width of the Il the clamping unit and thus the entire brake J ^ gert. In the present example dsr is free space

κι for the adjustment of the sealing rings 12 and 13 through

Ü Chamfers 9 ₅ or Kb generated 1 sheet of drawings

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Claims (2)

1 2 The invention has set itself the task of special claims: that is, the disc brakes of the last-mentioned type with a Z-shaped pressure chamber with a constant distance 1. To be able to make the sealing ring grooves narrower in the case of hydraulic utilization stroke and to reduce the clamping units of full-lining disks 5 due to the weight of the brake,
brakes, which are equipped with an inside or outside according to the invention, the sealing ring grooves on the closed brake housing and the outside or inside diameter in between those bearing the brake linings, axially fixed in a manner that rises away from the pressure chamber freely movable on a suspended or sloping conical surface with a cone angle brake disks equipped with two concentric steps of 2 " and the clamping unit attached to the pressure chamber side ° -2 " trained rings is sealed and the steps of the Siufenringe By this measure it is possible, as with the previously interlocking, mutually known solutions, the grooves are formed with a spacious, axial projections that is to machine the turning tool. As a result of the inclination, the cylindrical sealing surfaces are approximately at the same (5 to 10 ° cone angle) with the same amount of axial area of the brake Weight for the 10i) can be saved on their outer or inner diameter in the application unit,
In a further development of the invention, the rising or falling conical surface is also equipped with an end face of the groove facing away from the pressure chamber in a cone angle of 2 "and the essential part is conical at the same angle End face (9s) arranged on the pressure chamber side is designed in the form of a shape also conical at a cone angle. In the figures, an embodiment of the of 180 ° -2 "is shown. In F i g. 1 is one half of a hy- 2. Formation of the sealing grooves according to the hydraulically actuated passenger car full covering claim 1, characterized in that the end face (9 ₆ ) facing away from the benbremse on an enlarged scale in the longitudinal section of the pressure chamber is reproduced in its. In one shown in FIG. 2, the predominant part shown is also conical with a longitudinal section, the inner ring of the hydraulic closing cone angle of 180 ° - 2 » is designed 30 clamping unit during the turning operation in the end position of the turning tool shown In the figures, 1 the front wheel hub of the vehicle is marked By screws 2 are on the flange extensions Ii : both equally designed, externally open brake The invention relates to an embodiment of the sealing ring 35 housing halves 3 and 4 attached. On the one of the overview grooves in the case of hydraulic application units, for the sake of completeness, they are not shown with the stationary ones Lag disk brakes according to the preamble of An brake carrier are fixed in the circumferential direction, axially free 1. movable, the two brake discs 5 and 6 with the There are fully-lined disc brakes with internal or external friction linings 7 and 8 suspended. Circumferential brake housing, which is closed between the brake pads, is disks, separated from the latter, which knows the hydraulic one, in which the application unit equipped with a friction lining is accommodated. It consists of the inner step ring 9, which is fixed axially freely movable in the circumferential direction, and the outer step ring 10, which, when the brake disks are suspended, form a hydraulic clamping together the Z-shaped pressure chamber 11,
unit is arranged, which consists of two step rings Nu inner 9 or outer step ring 10 are housed, th seated sealing rings is sealed. The grooves The stepped rings of the application unit are axially equipped with a free space lying in the direction of pressure projections 9 ₂ or IO2 with the brake disks 5 and 6 or the sealing rings fill the width of the connection. The dust sealing of the application grooves is not completely off, so that the seals in the 50 unit are made via the rubber bellows 14 and 15, which are pressed in by the actuation and the rings of the shielding plates 16 and 17 are bordered.
Application unit elastically again after braking in FIG. 2 is the one shown in partial longitudinal section in its starting position. In the case of abrasion, the inner step ring 9 of the application unit during machining illustrates the axial elastic deformation of the sealing rings over the groove 9i. As the groove rises, there is a sliding between the sealing ring and the cylindrical turning tool 18 when machining the shear sealing surface, so that the axial projection 93 of the inner step ring can be smoothly passed by the shape of the grooves and the agitation without pre-emptying. The diagonal cross-sectional dimensions of the sealing ring guarantee the turning tool 18 perpendicular to the outer cone-shaped clearance over the entire wear area before 94 can be maintained with a right-angled turning tool cutting edge. 60, the end face 9s on the pressure chamber side has a cone angle The discs formed with a Z-shaped pressure chamber from 180 ° - 2tx, if 2 <x is the cone angle of the outer cone benbremsen, which by DE-OS 25 18 388, gel surface 9 ₄ is. « Experience has shown that approx. 7 ° 25 27 722 and 26 05 532 have become known, selected. The outer end face 9 ₆ is, as it is also present ensure a small axial dimensioning the example shows expediently also ke- Clamping unit as well as the possibility of designing the grooves for the 65 in gel form with a cone angle of 180-2oc . Sealing rings without a hook steel by normal imagining. be able to machine with straight form turning tool «■ η Width of the clamping unit on each actuation side