DE2807620A1 - DISC BRAKE - Google Patents

Description

PATENT LAWYERS A. GRUNECKER

CHPL-ING.

H. KINKELDEY

OR-ING

T W. STOCKMAlR

DR-INC-AaE tCALTECH

K. SCHUMANN

OR RER NAJ. · CHPL-PHVS

P. H. JAKOB

CM PL -IMG.

G. BEZOLD

DR RERNAT- 0 (FL-OENl

8 MUNICH 22

MAXIMILIANSTRASSE 43

P 12 4-39

Feb. 22, 1978

SUMITOMO EIiECTEIC INDUSTRIES, LTD.

15, Kitahama 5-chome, Higashi-ku, Osaka, Japan

Disc brake

The invention relates to a hydraulically operated disc brake for motor vehicles with a brake caliper.

A hydraulically operated disc brake for motor vehicles with a brake caliper has already been proposed. which comprises a brake disc attached to an axis of rotation of a wheel and a brake caliper which is attached to a stationary Part of the vehicle is attached and is movable relative to the brake disc. The brake caliper or the brake housing is in the shape of an inverted U and comprises two arms, one on each side of the brake disc lies so that the brake calliper engages around a circumferential portion of the brake disc. In one arm is a hydraulic one Actuating device arranged, which has a brake lining arrangement

9834/0872

TELEPHONE (O39) 32 3863 TELEX OS-2Q38O TELEGRAMS MONAPAT TELEKOPtERER

voltage applied directly, while another brake pad arrangement is indirectly applied to the other Arm of the brake calliper is provided. The two brake pad assemblies are arranged so that the brake pad assemblies are pressed against opposite sides of the brake disc when the hydraulic actuator is working.

In such a disc brake has already been proposed, the brake pad assemblies individually to the assigned arms of the brake caliper to be arranged in such a way that the brake lining assemblies can be renewed, repaired, Do not remove any inspection or similar maintenance work can if you remove the brake calliper. The work required for this takes a lot of time and is cumbersome. Also, a construction of a disc brake has been proposed in which the mechanical components for attachment the brake caliper on the stationary part of the vehicle, such as bolts, screws or the like, disadvantageously have to withstand a strong moment when the brake is applied.

The invention aims to design a disc brake with a brake caliper in such a way that the previously described Disadvantages have been overcome.

Furthermore, a disc brake with a brake caliper for motor vehicles should preferably be designed in such a way that that the brake pad assemblies can be easily, simply and quickly removed without having to remove the brake housing or must remove the brake calliper.

In particular, a disc brake is to be designed according to the invention in such a way that a main part of the when tightening the

809834/0872

Brake occurring moment is transmitted directly to the stationary part of the vehicle, so that the disc brake can be designed as a compact component and inexpensive.

In particular, according to the invention, a disc brake is to be included a brake caliper can be created with a simple structure, which is particularly suitable for use in a motorcycle is.

According to the invention, a hydraulically operated Disc brake with a brake caliper for a motor vehicle in that the brake pad assemblies in the corresponding Arms of the brake caliper are arranged so that they encompass a circumferential section of a brake disc, wherein the brake pad assemblies on the respective sides pivotable about a common, transverse, rod-shaped element are arranged, which extends between the arms of the pliers. One of the brake pad assemblies that are close by of the stationary part of the vehicle is located in a predetermined working position via a detachable geometric Positive connection held by complementary design of the corresponding interlocking parts, which between a profiled edge of the brake pad arrangement on one, the one running in the transverse direction, rod-shaped Element opposite side and a correspondingly complementary contoured stop plate forms, which is in one piece is formed with the stationary part of the motor vehicle. The other brake pad assembly, on the other hand, is in place and point via a releasable engagement connection. Which is located between projections in the brake pad assembly on a side opposite the brake disc and forms a recess in the other arm of the brake caliper is trained. The stop plate formed in one piece with the stationary part of the vehicle projects in the opposite direction to the direction of rotation of the brake disc. By a such an arrangement k / emie * Aue ΐτεν »« sbfclagsanordnung through

S09834 / 0872

JiO

held releasable engagement connections, the brake pad assemblies can be removed in a simple manner by pulling out the rod-shaped transverse element without first removing the brake calliper from the Motor vehicle must be expanded. Since the brake pad arrangement is also exposed to a strong torque, this but comes into engagement with the stop plate formed in one piece with the stationary part of the vehicle, A large part of the strong torque generated when the brake is applied is transmitted directly to the stationary part, so that the disc brake according to the invention is cheaper, can be designed to be space-saving and compact.

A preferred idea of the invention is hydraulic actuated disc brake for a motor vehicle that comprises a brake disc and a brake caliper. You brake caliper comprises two cantilever arms, each arranged on one side of the brake disc so that they have one Circumferential section of the same encompass. A single one, in the transverse direction extending rod-shaped element extends by a gap that is formed between the arms of the brake calliper on one side of the brake calliper, which the Opposite side on which the brake caliper is attached to the stationary part of the vehicle. A first support plate for the brake pads, which is acted upon directly by a hydraulic actuator, is between the brake disc and the arm of the brake caliper arranged, which is in the height of the fixed part of the vehicle. The arm the brake caliper is with the transverse rod-shaped element on a lateral extension of the support plate pivotally connected. The other side edge of the first support plate Is contoured to be releasably engaged with a correspondingly contoured stop block can come, which is designed in one piece with the stationary part. Of the

603834/0872

The stop block also serves as a holder for the brake calliper. Thus, the first support plate is through the geometric complementarily formed positive connection held in a certain working position. A second Support plate for the brake pads, which is arranged between the brake disc and the other arm of the brake calliper, is also mounted pivotably about the rod-shaped element running jointly in the transverse direction and via a releasable engagement connection set in a certain working position between projections in the support plate is formed on one side remote from the brake disc and a recess in the other Arm of the brake calliper is formed. In this way, the support plates carrying the corresponding brake linings can for renewal, repair or the like can simply be removed by only using the transverse rod-shaped Pulls out the element without first having to remove the brake calliper. In addition, this is when the brake is applied The moment acting on the first support plate through the brake disc is transferred directly to the stationary part of the vehicle, wear.

Further details, features and advantages of the invention emerge from the following description of preferred exemplary embodiments with reference to the attached Drawing. ■

Figure Λ is a side view of a disc brake according to a first embodiment of the invention,

Figure 2A is a vertical sectional view of the disc brake along the line H-II in Figure 5,

809834/0872

FIG. 2Β is a partial sectional view of a partially modified embodiment of FIG
Disc brake according to Figure 2A,

Figure 3 is a sectional view taken along the line III-III in Figure 1,

Figure 4 is a left side view of Figures 1 and 2 shows a brake caliper arm with a brake pad arrangement attached thereto;

FIG. 5 is a top view of the disc brake according to FIG Figure 1,

Figure 6 is a sectional view taken along line TI-VI
in Figure 5?

Figure 7-A- is a side view of a protruding tab-shaped Part for holding the brake caliper, which is attached to a stationary part of a motor vehicle is shaped,

Figure TB is a plan view of the same,
Figure 7C is a side view of the same,

Figure 8 is a view similar to Figure 3 and shows one Another embodiment of the disc brake according to the invention in a sectional view along the Line VIII-VIII in Figure 10,

Figure 9 is a side view of the same looking from the left in Figure 10,

809834/0872

Figure 10 is a sectional view taken along the line X-X in Figure 9;

Figure 11 is a view similar to Figure 5 and shows the disc brake according to Figure 8,

Figure 12 is a plan view of a brake pad assembly of the disc brake shown in Figure 8; and

Figure 13 is a sectional view taken along the line XIII-XIII in Figure 9 and shows the brake pad arrangement according to Figure 12.

Identical or similar parts are provided with the same reference symbols in the figures.

Figures 1 to 7 show a first embodiment of a Disc brake with a brake caliper attached to a motorized motorcycle. According to Figures 1 and 2A the disc brake, designated as a whole by 10, has a brake disc 11 which can rotate with a wheel (not shown) is mounted about an axis (not shown). As is well known, the wheel is placed on the axle, which is safe is carried by a fork-shaped element (hereinafter referred to as a fork for the sake of simplicity), the forms a stationary part of the motorcycle. About the brake disc 11 is in encompassing or » spread shape Arranged brake housing or a brake caliper 12, which has a substantially inverted U-shape, and which is composed of an inner arm 12A and an outer arm 12B, which are integrally connected via a cross member 12G. The brake caliper 12 thus engages around a peripheral section of the brake disc 11 »In this context, it should be noted that the designation" Snnen- "in the closer

34/0872

Labeling of the elements means that these elements are in the vicinity of the wheel, while by the designation "Outside" elements are referred to that are relatively remote from the wheel. The wheel is thus in Figure 1 and arranged on the left side of the inner arm 12A of the brake calliper, although it is not shown in the drawing is.

The disc brake 10 is designed so that it can be attached to the fork 13.

According to Figures 5 and 6, two laterally projecting lugs 14-A and 14-B are integral on the side of the cross member 12C, with a certain distance being formed between the lugs. This laterally protruding Approaches have corresponding openings that have a holding or guide pin 15 inserted through the openings Hold the shape firmly, with the guide pin 15 slidably inserted through a support plate or support block 16 which is formed in one piece with the fork 13 and is described in more detail below. In addition, be on it pointed out that the distance between the two laterally projecting lugs 14-A and 14-B is greater than the thickness of the Support plate 16 is selected so that the entire brake caliper is guided in the transverse direction relative to the brake disc 11 is reciprocally displaceable by the support pin 15, which is axially slidably received in a bore 17, the is formed in the support plate 16 (Figure 6). The outer arm 12B has a lower end portion (Figure 2A), in which a through opening 18 is formed, the slidable a fastening or support bolt 19 with an intermediate layer a sleeve 20 made of a rigid material such as metal. The fastening

8Ü9834 / 0872

bolt 19 is provided on its threaded according to Figure 2A End portion fixedly connected to the support plate 16, which is received in a corresponding, threaded bore 21 which is formed in the support plate 16 (cf. also FIG. 7C). The brake caliper 12 is thus on the support plate 16 is mounted, which is one piece with the fork 15 forms, so that the brake caliper in the transverse direction relative to the brake disc 11 under guidance by the upper holding or Guide pin 15 and the lower fastening bolt is movable back and forth. The sleeve 20 represents a Jerk-free and even movement of the brake caliper 12 safely.

According to FIG. 2A, a cylindrical recess 22 is formed in the outer arm 12B on its inside »A cylindrical Piston element 23 is slidable in the cylindrical Recess 22 is used in a fluid-tight manner, for example with the aid of an O-ring seal 24. A pressure medium chamber 25 is formed between the bottom wall of the cylindrical recess 22 and the end surface of the piston element 23 and stands Controlled by pressure medium with the main brake actuation device (not shown) in a manner known per se in Link. Thus, the piston element 23 is parallel to the brake disk 11 in a direction perpendicular thereto the movement of the brake caliper with the corresponding brake pressure of the pressure medium movable back and forth, which the chamber 25 applied. At 26 is a dust cover designated. The cylinder 22 and the piston 23 form a so-called hydraulic brake actuation device.

The piston element 23 has a free end which points in the direction of the brake disc 11 and to rest against it an outer support plate 28B comes, which in turn ·: an outer Brake lining 3OB carries on the side that is facing the brake disc 11. The support plate 28B for the brake lining has a uniform profile and is accordingly

accordingly aged and stored according to the invention, which follows will be described in more detail.

Referring again to Figures 1 and 2A, the inner arm 12A of the brake calliper is designed to be interchangeable a support plate 28A carries which carries a brake lining 3OA which is against the brake disc 11 on his Inside in an opposite arrangement to the brake lining 30B applies such that the brake disc 11 between the on both brake pads when the brake is applied.

The way in which the support plate 28A together with the brake lining 30A on the inner arm 12A of the brake caliper according to the invention is supported and stored, is described in more detail below.

A disc brake as described above is applied via a main brake device (not shown) known per se, in that the pressure medium pressure in the cylinder chamber 25 rises to the piston element 23 in the direction of the brake disc 11, i.e. to the left in Figures 1 and 2A, with the result that the support plate 28B and thus that of this worn brake lining 3OB against the outside of the Brake disc 11 are pressed on. When the pressure medium pressure in the chamber 25 rises further, the brake calliper moves 12 in turn away from the brake disc 11, in FIG. 2A to the right outside, this movement being guided by the Holding pin 15 and the bolt 19 takes place, since the movement of the piston element 23 is stopped by the brake disc 11 will. The brake caliper 12 can continue to move to the right, or outward, until the one on the inner arm 12A of the brake caliper attached brake pad 3OA against the inside of the brake disc 11 comes to rest, so that in cooperation with the brake lining 3OB on the brake disc 11, a braking force is exercised. A disc brake designed in this way is

809834/0872

generally referred to as a floating disc brake or a disc brake with a floating mounting of the brake caliper.

In the following, reference is made to FIGS. 1 and 3 to 5 in conjunction with FIG. The outer arm -12B of the brake calliper has a laterally projecting part 31B formed in an upper portion thereof on a side opposite to the laterally projecting lugs 14-A and 14B previously described in connection with Figs are. On the other hand, the inner arm 12A of the brake calliper has a corresponding laterally projecting part 31A (FIGS. 4 and 5). The laterally projecting parts 31-A- and 31B serve for the favorable and easily releasable support of a rod-shaped transverse element 32 via corresponding openings, which can be seen in FIGS. 1 and 5 in particular. The rod-shaped cross element 32 is essentially loosely held in the corresponding openings by the laterally protruding parts 514 and 31B and its position is fixed with the aid of a stop pin 33 which is releasably inserted into a bore extending in the diameter direction which is formed in the rod-shaped cross element 32 is. When the stopper or locking pin 33 is removed, the rod-shaped cross member 32 can simply be pulled out of the bearing bores formed in the protruding parts 31A and 31B. According to FIG. 3, the outer support plate 28B for the brake lining has a laterally extending shoulder y \ which is formed on a side remote from the fork element 13. In this laterally extending extension 3 ^ a bore 35 is formed, which is traversed by the rod-shaped transverse element 32 described above under sliding guidance. The outer support plate 28B together with the brake lining 3OB is, in other words, axially slidably movably arranged and around the rod-shaped transverse element 32 on the side

809834/0872

lick extending approach 34- pivotally mounted, as well as with of the brake caliper 12 only via the rod-shaped transverse element 32 mechanically connected so that the outer support plate 28B can be manually removed from the disc brake, namely simply by pulling out the rod-shaped cross member

For positioning the outer support plate 28B for the brake lining despite the pivotable arrangement of the same around the rod-shaped Cross member 32 in place faces the side of the outer support plate 28B in the vicinity or the fork 13 adjacent lying on a uniform profile or a uniform contour, so that there is a Sormschluss between the free side edge of the support plate 28B and the fastening or support plate 16, which is integral with the fork 13, In particular, the outer support plate 28B has a substantially rectilinear shape Side edge 36 on which is opposite to the side on which the "shoulder 34" intended for holding is formed. Preferably the side edge 35 runs in a radial direction of the brake disk 11 in the working position of the brake lining 3OB. In addition, a gate 37 is in the main straight side edge 36 of the outer support plate 28B formed at an upper portion. The projection 37 has a lower edge 38 which is substantially perpendicular to the rectilinear side edge 36, which is can best be seen in Figure 3. This gate 37 is used furthermore, the inclination of the support plate 28B to execute a pivoting movement about the rod-shaped transverse element 32 counterclockwise when the brake is applied suppress. On the other hand, the support plate 16 formed in one piece with the fork 13 has a correspondingly profiled one or contoured stop section so as to a geometrical complementary SOrmschluss with the profiled Ensure side edge of the outer support plate 28B. In particular with reference to Eigur 7C in

80983 4/0872

Binding with Figure 3 is the profiled or contoured Stop section on the support plate 16 between the opening 17 for slidably receiving the retaining or guide pin 15 and the threaded bore 21 which serves to firmly hold the guide pin 19. This profiled or contoured stop section includes a rectilinear edge section 39 »of a corresponding one Forms a positive connection with the corresponding side edge of the outer support plate 28B, as well as an offset Edge portion 40 that engages lower edge 38 of the projection 37 can come in the support plate 28B is designed as described above. With the help of such a geometric interlocking connection between the free side of the support plate 28B and the profiled or contoured stop edge portion on the support plate the outer support plate 28B can be securely held in its working position, although the support plate 28B with the Brake caliper 12 is mechanically connected only via the rod-shaped cross element 32 serving for guidance. While dressing the brake is applied to the brake disk 11 rotating in the direction of an arrow 41 in FIG. 3 through the outer support plate 28B exerted moment directly via the geometric form-locking connection at 36 and 39 and 38 and 40 to the Transfer fork 13, which is indicated by an arrow 42. This means that undesirable exerted on the supporting structure Stresses can be reduced considerably, which the brake calliper, the guide elements 15 and 19 * and the Rod-shaped cross member 32 comprises. At the same time, the entire disc brake are advantageously designed to be relatively small, in addition to the advantage of it can be seen that the outer support plate 28B with the brake lining 30B for separation, replacement or the like can be easily expanded by simply pulling out the rod-shaped transverse element 32 without the brake calliper must be removed from the fork 13.

809834/0872

3o

In a similar manner, the inner support plate 28A is supported with the brake lining 30A so that it can be easily Way can be expanded. For this purpose, the inner arm 12A of the brake calliper is provided with a semicircular holding recess 45 according to Figure 4, which is a side view looking in the direction of the wheel. On the other hand, points the inner support plate 28A has two retaining projections 46 on its inside, which are designed such that they are flush in engagement with the semicircular recess 45 in FIG Diameter direction opposite layers come. Furthermore, the inner support plate 28A is provided with a laterally extending protruding part 47 (FIG. 5) which corresponds to the part marked 34 of the outer support plate 28B and for the axially slidingly movable and pivotable mounting of the support plate around the rod-shaped transverse element 32 is determined via an opening in the protruding Part 47 is formed. The inner support plate 28A with the brake lining 30A is thus, in other words, only Mechanically via the rod-shaped transverse element 32 with the brake calliper 12 and is held in the operating position as a result of the form fit or the engagement connection, between the holding projections 56 and the semicircular Forms retaining recess 45 which on the inner arm 12A the brake calliper is formed. When the brake is applied, this is done via the connection between the brake lining 3OA and the rotating disk 11 on the inner support plate 28A is derived by transmitting it to the fork via the brake calliper.

To remove the inner support plate 28A, the rod-shaped transverse element 32 is first pulled out and then is the inner support plate 28A rotates so that one of the holding projections 46 comes free from the semicircular recess 45 .

809834/0872

8-1

In addition, it should be noted that the thickness of the outer Support plate 28B and the profiled edge portion of the support plate 16 is selected so that the outer support plate 28B and the support plate 16 in the working position despite the movement of the support plate relative to the brake disc 11 at Applying the brake does not come free under any circumstances.

In Pigur 2B there is a partially modified embodiment the disc brake according to Figures 1, 2A and 3 to 7 shown. In this modified embodiment, the lower guide pin 19 'is fixed to the outer arm 12B of the Brake calliper connected and inserted slidably in a closed sleeve 20 'at the bottom, which consists of a resilient resilient, stretchable material, so that one in this way any manufacturing tolerances and dimensional deviations the mechanical components, such as the arms of the brake calliper, the bolt 19 'and the like as well as compensate for possible deformations of the same that may occur during operation of the brake. The on The sleeve 20 ′ closed on the bottom side is for its part firmly received in an opening 21 in the support plate 16 is trained. The squeeze and expandable sleeve 20 "provided in the modified embodiment of the disc brake ensures a more jerk-free, smoother movement of the brake calliper than in the embodiment according to FIG. 2A.

FIGS. 8 to 13 show a further embodiment of the Disc brake according to the invention, in which the same or similar components have the same reference numerals as in the previous one described embodiment are provided. The disc brake shown in Figures 8 to 13 differs of the embodiments according to FIGS. 1 to 7 mainly in that the brake housing or the brake caliper in the embodiment under discussion here has a single one rod-shaped element or a bolt 60 with the fork

809834/0872

13 is connected, and is pivotable about this element, while the brake caliper in the with reference to the Figures 1 to 7 explained embodiment over two. Rod-shaped holding and guide elements 15 and 19 or bolts is arranged to be linearly movable relative to the brake disc 11 and the fork 13. In the simplified embodiment according to FIGS. 8 to 13, the holding or support plate is 16, which is formed in one piece with the fork 13, modified accordingly in such a way that it secures the bolt 60 receives, while the transverse element 12C has a through hole 61 which passes through this in the transverse direction and to Receiving the bolt 60 is used. With a sleeve 62 is referred to, which a smooth and jerk-free leading movement made possible during the pivoting movement of the brake calliper. In comparison to the disc brake shown in Figures 1 to 7, in which the brake calliper 12 is attached to the fork 13 at two points, the brake calliper is according to the disc brake 8 to 13 attached to the fork 13 via the bolt 60 only at a single point. This last Said embodiment of the disc brake is intended in particular for a motorcycle with a relatively low drive power. The other construction elements and the functioning of the disc brake is essentially similar to that previously described embodiment. Thus one is not necessary detailed explanation of the details thereof. In this context it is pointed out again that the inner and outer support plates 28A and 28B are mechanically connected to the brake calliper only via the rod-shaped cross member 32 are and in their corresponding operating positions by the geometrical form fit of the profiled or contoured Sections on the inner arm 12A of the brake caliper and the support block 16 are held. That on the outer support plate 28B when the brake is applied is transmitted directly to the fork. That on the inner Tx ^ ag plate 28A The moment acting when the brake is applied is transmitted to the fork 13 via the support bolt 60. The inner and

809834/0872

outer support plates 28A and 28B, each holding the brake pads 3OA and 5OB can also be used for expansion, for Repair or the like can be removed in a simple manner by removing the rod-shaped transverse element 32 pulls out, which is easily detachably attached to the tong arms. The inner support plate 28A with the corresponding brake lining 30A corresponding to FIGS. 12 and 13 can refer to similar ones Manner as in the embodiment according to Figures 1 to 7 are used.

When the brake is operated, the outer brake lining 3OB comes off first to rest against the outside of the brake disc 11 under the action of an increased pressure medium pressure in chamber 25 · The brake calliper then rotates counterclockwise so that the inner arm 12A of the brake calliper the brake lining 3OA against the other side of the Brake disc 11 is pressing.

In the case of possible modified embodiments of the invention that are not shown, the geometric Positive connections between the support plates and the The holding plate or the holding block and the inner arm of the brake calliper can also be designed differently, provided that this is ensured is that the support plates are held in cooperation with the rod-shaped transverse element in their respective operating positions such that they are easily removed without having to remove the brake calliper. Although the illustrated embodiments of the Disc brakes have been explained in connection with a motorcycle, they can also with appropriate modification used for other motor vehicles.

8098 3 4/08 7

Blank page

Claims (1)

PATENT LAWYERS A. GRUNECKER DiPt - ING. H. KlNKELDEY DH-ING W. STOCKMAIR 'y O Π Ί C. TA Da-ING-AeE ₁ CALTECH) 4θϋ / D4U κ. SCHUMANN DR PSR NAT. ■ [11 ".- [VS P. H. JAKOB DlPL-ING. G. BEZOLD DR RER NAX- DIPL-CHEM. 8 MUNICH MAXIMIUANSTRASSS P 12 4-39 Claims M .; Disc brake for a motor vehicle, characterized by a brake disc (11), a Brake caliper (12), which extends over the brake disc (11) in a spread form and first and a wide arms (12A, 12B) which are formed so that they at least partially have an intermediate peripheral portion grip around the brake disc (11), a holder (16) for the brake caliper (12) on a stationary part (13) of the vehicle, which allows a relative mobility of the brake caliper (12) to the brake disc (11) by first and second brake pad assemblies (30A, 30B) interposed between the brake disc (11) and the first and second arms (12A, 12B) of the brake calliper are arranged by means (32) which have a pivotable connection between the first and second brake pad assemblies (30-A-i 3OB) on the brake caliper (12) by means of a brake actuation device (22, 23) which is installed in the brake caliper (12) is arranged and designed such that it is one of the first and second brake pad assemblies (3OA, 3OB) directly 809834/0872 TELEPHONE (Oae) 32 38 63 TELEX OB-SS 38Ο TELEGRAMS MONAPAT TELEKOPIEFtER ORiGlNAL INSPECTED _ ₂ _ 28Q7Ö20 against the brake disc (11) and the other brake lining arrangement (30B, 30A) via a corresponding movement the brake caliper (12) when the brake is applied indirectly presses against the brake disc (11) by means of a stop device (39) integral with the stationary part (13) in the vicinity of one of the first and second Arms (12A, 12B) of the brake calliper is formed and designed such that it is releasably engaged with a of the two brake pad assemblies (30A, 30B) for holding this brake pad assembly in a specific one Operating position in cooperation with the connecting device (32) comes, so that the brake pad arrangement remains essentially stationary with forces acting on the brake pad arrangement by the brake disc (11) act when the brake is applied, and through a locking device (4-5, 4-6) in conjunction with the other Arm (12A) of the brake caliper (12) provided and designed in such a way is to releasably engage the other brake pad assembly (30A) so that the other brake pad assembly (30A) in cooperation with the connecting device (32) in a predetermined working position remains essentially stationary when this other brake pad arrangement is pushed by the brake disc (11) forces act when the brake is applied. Disc brake according to Claim 1, characterized in that the holder for the brake caliper (12) comprises a holding block (16) which is formed in one piece with the stationary part O3) of the vehicle, protrudes in the opposite direction to the direction of rotation of the brake disc (11) and for holding the brake caliper (12) on one serves their sides, and that the stop device a Includes stop edge (39) which is formed on the holding block (16). 809834/0872 Disc brake after. Claim 1 or 2, characterized in that the connecting device comprises a rod-shaped transverse element (32) which on one side of the brake calliper (12), from the holding block (16) for the brake calliper facing away, is releasably attached, and via the first and second arms (12A, 12B) of the Brake caliper extends, and that the first brake pad assembly (3OB) comprises a first support plate (28B) which the first brake pad (30B) carries on a side that is opposite to the brake disc (11) and around the rod-shaped Cross member (32) is pivotally attached to a side edge portion which is a side edge portion opposite, which releasably comes into engagement with the stop edge (39) formed on the holding block (16). Disc brake according to one of claims 1 to 3? through this characterized in that the stop edge (39) is substantially straight and is in the extends substantially in the radial direction of the brake disc (11) to on the side edge (36) of the first support plate (-28B) to come to rest in the form of a geometric form fit. Disc brake according to Claim 4, characterized in that a stepped section (40) is attached the stop edge (39) substantially perpendicular to the To the extreme lying section of the stop edge (39) looking in the radial direction of the brake disc (11) is formed, and that the side edge (36) of the first support plate (28B) has a laterally extending protruding Part (37) has at one point, so that this in Engagement with the stepped portion (40) can come. 8098 34/0872 6. Disc brake according to one of claims 1 to 5 »thereby characterized in that the second brake pad assembly (50A) comprises a second support plate (28A) which carries a brake lining on one side which faces the brake disc (11) and which is around a side section of the rod-shaped transverse element (32) around this is pivotally mounted, and that the locking devices have a recess (4-5), cLie on the other arm (12A) of the Brake caliper is formed, and projections (4-6) comprises, which in the second support plate (28A) on the second Brake lining (30A) opposite side are formed such that they are releasably engaged with the recess (4-5) come to the second brake pad assembly (3OA) in a working position in cooperation with the rod-shaped To hold transverse element (32). 7. Disc brake according to claim 6, characterized in that the recess (4-5) essentially Is profiled semicircular and is open to the free end of the other arm (12A) of the brake calliper. 8. Disc brake according to one of the preceding claims, characterized in that the brake caliper (12) is mounted on the support block (16) such that it can move back and forth in a direction that is substantially is perpendicular to the plane of the brake disc (11). 9. Disc brake according to one of the preceding claims, characterized in that two are spaced apart Lateral, protruding, shoulder-shaped parts (14-A, 14-B) on the brake calliper (12) on one side are formed, which firmly support a rod-shaped holding element (15) which is in a through opening (17) in the holding block (16) is slidably received so that the 809834/0872 Brake caliper (12) is movable, mounted, and that a rod-shaped Guide element (19, 19 ') parallel to the. rod-shaped Holding element (15) is provided which forms a guide for the movement of the brake caliper (12). 10. Disc brake according to claim 9 »characterized in that the rod-shaped guide element (19 ') on the first arm (12 B) of the brake calliper is fixedly attached to a free end portion and in the form of a sliding connection through a guide opening (21) which is in the Holding block (16) is formed, and in which a sleeve (20 ¹ ) made of resilient, squeezable or stretchable material is inserted, which lies between the rod-shaped guide element (19 ') and the guide opening (21). 11. Disc brake according to one of the preceding claims, characterized in that the brake caliper (12) with a transverse through hole (61) -provided and on the holding block (16) with the help of a rod-shaped Element (60) is attached, which passes through the transverse through hole (61) and on the holding block (16) is attached so that the brake calliper (12) rotates around the rod-shaped element (60) can move relative to the brake disc (11) (Figures 8 to 13). 12. Disc brake according to one of the preceding claims, characterized in that the motor vehicle is a motorcycle that has a fixed fork element (13), and that the holder (16) holds the brake caliper (12) on the fork element (13). 809834/0872 13 · Disc brake according to one of the preceding claims, characterized in that the motor vehicle is a motorcycle and that the stationary part is formed by a fork element (13) cLes motorcycle. 809834/0872