FR2517777A1 - HOUSING FOR THE DISK BRAKE PAD WITH SMOOTH PLATE - Google Patents

Abstract

THE INVENTION RELATES TO A HOUSING FOR THE PLATE OF A SMOOTH PLATE DISC BRAKE IN A STATIONARY BRAKE BRACKET WITH AT LEAST ONE GUIDE BOLT PARALLEL TO THE WHEEL AXLE. ACCORDING TO THE INVENTION, BOLT 26 IS FIXED IN A HOLDALL 28 AND BEEN BASED BY AN ENLARGED HEAD 26A, ON ANOTHER HOLDER 27; THE LEGS 27, 28 ARE BEARING BY A COLLAR 31, 32 ON THE SHOULDERS 33, 34 OF THE BRAKE SUPPORT 1; A TUBE 37 FITS IN A BORE OF THE PLATE 2 AND IT CAN SLIDE AXIALLY ON THE BOLT 26; AT THE TWO ENDS OF THE TUBE 37 ARE PROVIDED TWO BEARINGS 38, 39 WHICH FIT IN THE BORES OF THE PLATE 2 OR THE HOLDERS 27, 28; THE BRAKE SUPPORT 1 HAS TWO RECESSES 46 AROUND THE BORES 29, 30, THROUGH WHICH THE ASSEMBLY IS INTRODUCED. THE INVENTION APPLIES IN PARTICULAR TO BRAKING.

Description

The present invention relates to a housing for.

  the plate of a disk brake with smooth plate, in a brake support which is stationary, with a guide bolt parallel to the axis of the wheel, which passes through a bore disposed in the wafer and comes in pnise to its two ends, in sheaths, which are arranged in

  bores of the brake support and are dressed with

  sinets. Dan a known housing of the same kind for the

  plate of a brake disc with smooth plate (ATZ Auto-

  mobiltechnische Zeitschrift, 83 Jahrgang, Nr 9 -pages 469 and following) the guide bolt is fixedly connected, by means of a stop screw, to the plate This bolt of

  guidance therefore performs each movement of the

  and moves more and more inward, increasing the wear of brake linings.

  it slides in the two sleeves provided in the

  worn with pads To change the

  filling, at least one

  Brake support guide bolt For this purpose, a brake

  wise thread is formed at the inner end of the bolt

  guide, which is normally closed by a cylinder head screw.

  When, as a result of the wear of the filling

  brake, a change of the trim support is necessary.

  you have to unscrew the cylinder head screw and

  screw a tool suitable for extracting the guide bolt.

  After removing the stop screw screwed into the wafer, the guide bolt can be removed and the wafer can be rotated so that the weatherstrip support can

to be changed -

  The present invention aims to improve the housing above so that the exchange of the support of

  trim can be accomplished in a minimum time.

  According to the invention, this objective is achieved by the fact that the guide bolt is screwed into a sleeve and rests, by an enlarged head, on the other sleeve, the

  the sleeves rest, by a collar, on the shoulder of the

  brake port, a tube fits into the bore of the

  which is brought by sliding it axially on

  the guide bolt at both ends of the tube are

  two bushings, which fit into the bores of the wafer and the sheath, and the brake support, in the vicinity of the bores, is provided with two lateral recesses, through which the tube provided with the bearings and connected to the wafer can be introduced laterally into the bores of the brake support With this construction of the housing, it is possible to incorporate the plate with the tube in place, in the brake support, before the sleeves are put in place in the bores of the support brake and that the guide bolt passes through the first sleeve and the tube and is screwed to the other sleeve The assembly process and the exchange of the support

  brake lining are thus considerably simplified.

  fied. To prevent the surface of the sole from becoming dirty, in another form of the invention, it is expected that the pads disposed at both ends of the tube

  are connected to each other by a bellows.

  The sleeves are advantageously placed in the bore of the brake support with introduction of a rubber ring, which serves to center and at the same time

  prevents clacking noises, which might otherwise be

  occur during the braking process due to vibration. For the return of the wafer to the output position, is advantageously arranged between the sleeve turned towards the direction of activation of the brake and

the tube, a compression spring.

  To limit the axial displacement of the tube, the sleeve turned towards the direction of activation is

  advantageously provided with a shoulder, on which can

  lean the opposite end of the tube.

  In the bore of the wafer is advantageous-

  A tolerance ring is provided which prevents slippage of the wafer on the tube. When the tube, as a result of excessive wear of the liner, is able to rest on the shoulder of the sheath, then the wafer can be moved by the causes the friction force exerted by the tolerance ring on the tube to be exceeded,

  to balance the wear of the lining.

  The invention will be better understood, and other purposes, features, details and advantages thereof

  will appear more clearly during the description

  explanatory text which will follow with reference to the accompanying schematic drawings given solely by way of example illustrating an embodiment of the invention, and in which FIG. 1 is a view of a disk brake with a smooth wafer; FIG. 2 is a view from above, partly in section, of the flat-plate disc brake according to FIG. 1; and Figure 3 shows a section made according to the

line III-III of Figure 2.

  A smooth disk disc brake can be subdivided into four units, ie the brake support, the plate with the packing supports, the

  guiding elements for guiding the wafer into the

  brake port and the disc (not shown).

  The wafer 2 encroaches on the brake disk which contains the hydraulic or mechanical actuation of the brake, which produces a tension force acting on the lining support 3. The brake support 1 is firmly connected to the rocket. axle (not shown) of the vehicle, and serves to support the plate against the friction forces acting on the brake lining support The guiding elements represented by the bolt 26 guide and place the plate 2 in the support of

brake 1.

  The disc brake shown can be used both as a hydraulic brake and a mechanical locking brake. On the hydraulic side, there are two pistons on one side.

  of a hydraulic actuation, only a support of

  The resulting reaction force brings the sliding plate 2 of the second support of

  trim 3 in position on the disc (not shown).

  For the double housing of the plate 2 in the lining support, a guide bolt is required.

  which on the one hand passes through a sheath 27 on which it repositions

  by an enlarged head 26a, and on the other hand is screwed

  in an opposite sleeve 28 The sleeves 27, 28 are inserted into

  with some clearance, in bores 29, 30 of the

  brake port 1, and they are held in position by attraction of the guide bolt 26 with their collar 31, 32 on the shoulders 33, 34 of the brake support 1 In the bores 29, 30 of the brake support 1 are arranged rings rubber 35, 36, which serve for centering and at the same time prevents slamming noises, which could occur during operation, due to vibrations on the guide bolt 26 is slid a tube 37, which extends between the Sleeves 27, 28 The two ends of the tube 27 are introduced into bearings 38, 39, which fit in the sleeves 27, 28 or in a bore of the wafer 2 receiving the tube 37. The two bearings 38, 39 are connected to each other. to one another by means of

  a bellows 45, which prevents the entry of water and dust

  re in the housing In the bore of the plate 2 is

  disposed a tolerance ring 40, which prevents slipping

  of the wafer 2 on the tube 37.

  For the activation of the operating brake,

  the pistons 13 are hydraulically stressed When using

  When the locking brake is activated, the actuation is initiated by a 4, which is connected to an actuating shaft. On its side opposite to the actuating lever 4, the shaft 5 is provided with oblique bearing tracks. o are balls 7 which correspond to the oblique rolling tracks 8 of a thrust piece 9 The piece

  of thrust 9 adjacent to the piston 13 can be axially displaced.

  but is arranged so that it can not turn.

  The piston 13 is connected, by a setting system of known construction, to a set screw 16, which is

contig with the brake support 3.

  The tolerance ring 40 produces a friction which is large enough to stop the wafer 2

  on the tube 37, so that these two pieces then move

  all together on the guide bolt 26 Thus, a compression spring 41 placed between the tube 37 and the sleeve 28

  is compressed This spring 41 brings back the tube 37 and the plaquet-

  2, at the end of the braking process, at the exit position When the wear of the brake lining increases, then the tube 37 arrives during a braking process,

  to rest on a shoulder 42 of the sleeve 28 If at this moment

  Due to a further increase in the wear of the packing, a larger gap becomes available, so that the friction of the tolerance ring is overcome, and the

  plate is moved according to the wear, on the tube '37.

  Since, during a braking process, the

  lining ports 3, slide in advance direction, on each support 43 on the plate 2 or the adjusting screw 16, until it reaches the contact 44 of the brake support 1, the support force of the brake support 1 is repeated, and the

  housing can therefore be small and save money.

  pace. The mounting of the plate 2 on the brake support 1 occurs as follows: the plate already provided with the tube 37, the pads 38, 39, the tolerance ring 40 and the bellows 45, is arranged, from at the top, by the recesses 46 (see Figure 3) in the

  bores 29, 30 of the brake support 1 Then, the

  27, 28 are introduced into the bores 29, 30 of the

  brake support 1, and the guide bolt 26 is inserted into

  in the sleeve 27 and the tube 37, and is screwed into the opposite sleeve 28, to fix the two

sheaths to each other.

Claims (5)

R E V E N D I C A T IO N S   1 Housing for the plate of a disc brake   with a smooth plate in a stationary brake support   re with at least one guide bolt parallel to the wheel guide shaft, which passes through a bore disposed in the wafer and engages with its two ends;   in sheaths, which are arranged in   of the brake support and which are padded with bearings, characterized in that the guide bolt (26) is screwed into a sleeve (28) and is supported by its enlarged head (26a) on the other sleeve ( 27), in that the sleeves (27, 28) rest, by a collar (31, 32) on shoulders (33,   34) of the brake support (1), in that a tube (37) adapts   te in the bore of the plate (2), which is guided by being able-   1 axle axle on the bolt (Z 6) on both ends.   the tubes (37) are provided with bearings (38, 39) which fit into the bores of the wafer (2) or sleeves (27, 28) and that the brake support (1) in the vicinity bores (29, 30) are provided with two lateral recesses (46) through which the tube (37) connected to the wafer (2) and provided with the pads (38, 39) can be introduced laterally into the bores (29). , 30) brake support (1).   2 housing according to claim 1, characterized in that the pads (38, 39) disposed at both ends of the tube (37) are connected to one another by means of a bellows (45).   Housing according to any of the claims   1 or 2, characterized in that the bearings (27, 28) are arranged by the bores (29, 30) of the brake support (1) with the interposition of a rubber ring (35, 36).   4 Housing according to any one of the claims   characterized in that between the sleeve (28) rotated in the direction of actuation of the brake and the tube (37) is arranged a compression spring (41).   Housing according to claim 4, characterized in that the sleeve (28) turned in the direction of activation is provided with a shoulder (42) with which can come into contact the opposite end of the tube (37).   Housing according to claim 5, characterized in that in the bore of the wafer (2) a tolerance ring (40) has been arranged, which prevents   sliding of the wafer (2) on the tube (37).