Disc brake for a utility vehicle

Abstract

A disc brake for a utility vehicle is provided. The disc brake includes a brake caliper overlapping a brake disc, the brake caliper being held on a brake carrier located on the vehicle in an axially displaceable manner with respect to the brake disc. The brake carrier has brake lining slots on opposite sides of the brake disc defined by brake carrier lugs on the entry and the exit side. Each slot receives a brake lining having a brake plate and a friction lining fastened thereto, configured such that each brake lining is supported at least at the entry side in the direction of rotation of the brake disc on the entry side brake carrier lug during braking.

Claims

1. A disc brake for a commercial vehicle, comprising: a brake disc having a rotation axis; a brake carrier configured to straddle the brake disc and be mounted on the vehicle; a brake caliper configured to straddle the brake disc and be retained on the brake carrier such that the brake caliper is displaceable axially parallel to the rotation axis; and brake pads each having a pad-carrier plate and a friction lining fastened thereon, wherein the brake carrier has lining slots on opposite sides of the brake disc configured to receive the brake pads, the lining slots being bounded on entry and exit sides by opposing brake carrier lugs, in the region of the brake carrier lugs, each brake carrier lug has a respective protuberance present on a floor of each lining slot, each of the brake pads have at each opposing end of the brake pad in a circumferential direction a protrusion configured to butt against each respective protuberance, during braking the brake pads are supported on the brake carrier in the direction of rotation of the brake disc at least on the respective entry side brake carrier lugs, and a distance between the protrusions of each brake pad is sized such that during a brake application event, the brake pad protrusions function as a tie between the respective brake carrier lug protuberances on the floor of each lining slot that inhibits separation of the respective protuberances and respective protrusions away from one another.

2. The disc brake according to claim 1, wherein each respective protuberance and associated brake carrier lug cooperate to form a recess configured to receive each respective brake pad protrusion.

3. The disc brake according to claim 2, wherein the respective protuberances and associated brake carrier lugs on mutually facing sides have supporting surfaces against which each respective protrusion abuts.

4. The disc brake according to claim 3, wherein each respective protuberance and associated brake carrier lug supporting surfaces are parallel to one another.

5. The disc brake according to claim 4, wherein the supporting surfaces are tangentially oriented relative to the brake disc.

6. The disc brake according to claim 3, wherein a distance between supporting surfaces of two protuberances at opposite sides of a respective one of the lining slots is the same as a clear distance between the two protrusions at opposite sides of a respective brake pad.

7. The disc brake according to claim 3, wherein the clear distance of the supporting surfaces of the respective protuberances and of the associated brake carrier lug in relation to one another is equal to, or slightly greater than, a width of each respective protrusion received between the respective supporting surfaces.

8. The disc brake according to claim 1, wherein the brake carrier lugs of only one of the opposing lining slots are connected to one another by a strut.

9. The disc brake according to claim 1, wherein a claw and a groove are located on at least an entry-side peripheral region of the brake pads, the claw and the groove being configured to receive a retaining pin of the associated brake carrier lug.

10. The disc brake according to claim 1, wherein a claw and a groove are located on free ends of at least an entry-side brake carrier lug, the claw and the groove being configured to receive a retaining pin of the respective brake pad.

11. The disc brake according to claim 1, wherein at a periphery region of the brake pads adjacent a floor of each lining slot, each brake pad includes at least one projecting extension configured to engage in an aperture of the respective adjacent brake carrier lug.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 shows a plan view of a disc brake according to the prior art.

(2) FIGS. 2A-23B show different views of an embodiment of the invention.

(3) FIG. 24A-24C show various illustrations of a further embodiment of the invention.

DETAILED DESCRIPTION OF THE DRAWINGS

(4) FIG. 1 depicts a disc brake 1 according to the prior art, having a brake caliper 2, which engages over a vehicle-mounted brake disc 4 and is mounted on a fixed-location brake carrier 3 such that it can be displaced axially, as seen in relation to the axis D of the brake disc 4.

(5) The brake carrier 3 has arranged in it, on either side of the brake disc 4, brake pads 5, each comprising a pad-carrier plate 6 and a friction lining 7 fastened thereon.

(6) The brake pads 5 here are positioned in a pad slot, which is bounded on either side by brake carrier lugs 8.

(7) FIGS. 2-21 and 24 each illustrate a brake carrier 3 according to the invention as a single unit, wherein FIG. 2A) represents a front view of the brake carrier 3 with a brake pad 5 inserted, whereas FIGS. 2B) and 2C) represent enlarged details A and B of the structural unit according to FIG. 2A).

(8) It can be seen that, according to the invention, each brake pad 5 is retained on the brake carrier 3 by a form fit in both directions of rotation x, y of the brake disc 4 at least on the entry side, and in the example also on the exit side.

(9) For this purpose, in the region of the brake carrier lugs 8, the brake carrier 3 has a respective protuberance 9 formed on the floor of the pad slot, said protuberance projecting in the direction of the brake pad 5 at a distance from the associated brake carrier lug 8.

(10) On their side which is directed towards the brake pad 5, the brake carrier lugs 8 each have a supporting surface 12, which runs tangentially as in relation to the brake disc 4, like a supporting surface 12 of the protuberance 9, which is directed towards the supporting surface 12 of the brake carrier lug 8 and runs parallel thereto.

(11) This therefore forms a recess 11, into which projects a protrusion 10 of the brake pad 5, which is retained by a form fit in both directions of rotation of the brake disc 4 by way of lateral abutment against the two side surfaces 12 of the brake carrier lug 8 and of the protuberance 9, wherein the supporting surfaces 12 form an abutment in both directions of rotation x, y of the brake disc 4.

(12) It can be seen in FIG. 3, which represents a bottom view of the brake carrier 3, that the brake carrier lugs 8, which are assigned to the respective pad slot, are connected to one another by a respective strut 13.

(13) FIG. 4 shows a perspective view of the unit made up of the brake carrier 3 and brake pads 5, wherein this figure depicts the front view, whereas FIG. 5 represents the rear view, which, as seen in the installed position, is directed towards a wheel rim of the commercial vehicle.

(14) FIG. 6 shows a plan view of the brake carrier 3 with brake pads 5 inserted.

(15) FIGS. 7-10 show various views of the brake carrier 3 as a single unit, wherein the brake carrier lugs 8 of each pad slot are connected to one another by a strut 13.

(16) FIGS. 12-15 depict a brake carrier 3 with brake pads 5 inserted, the brake carrier lugs 8 of just one pad slot being connected by a strut 13, whereas the brake carrier lugs 8 of the other pad slot are not connected by such a strut 13.

(17) Here, then, the brake pad 5 inserted performs the function of the strut 13, which then acts more or less in the manner of a tie bar, to be precise in that it is clamped in, both on the entry side and on the exit side, between the protuberances 9 and the brake carrier lugs 8 with the protrusion 10 formed thereon.

(18) FIG. 12 shows the bottom view of the brake carrier 3, whereas FIG. 11A) represents a front side, with strut 13, wherein, as seen in the installed position of the disc brake or of the brake carrier 3, the front side forms the side which is directed away from a wheel rim.

(19) FIGS. 11B) and 11C) respectively represent an enlarged detail A (FIG. 11B) and B (FIG. 11C).

(20) FIG. 13 shows a perspective illustration of the view in FIG. 11A), while FIG. 14, likewise in the form of a perspective depiction, represents the rear side of the brake carrier 3 with brake pads 5 inserted, said rear side, as mentioned, being directed towards a wheel rim during operation, wherein the absence of the struts 13 in the region of the pad slot is clearly visible here.

(21) FIG. 15, finally, represents the plan view of the brake carrier 3.

(22) FIGS. 16-21 show the brake carrier 3 according to FIGS. 11-15 on its own, wherein FIG. 16 the front side according to FIG. 13, FIG. 17 a perspective view of the brake carrier 3, as seen from the front side, and FIG. 19 a perspective view as seen from the rear side. FIG. 18 represents the rear side of the brake carrier 3 in accordance with the depiction in FIG. 14, whereas FIG. 20 shows a bottom view of the brake carrier 3 and FIG. 21 shows a plan view of the brake carrier 3.

(23) FIG. 22A) shows a brake pad with a front view of the pad-carrier plate 6, the protrusions 10 being formed on said brake pad. FIG. 22B) shows a side view of the brake pad 5.

(24) FIG. 23A) is a view of the brake pad 5 on the friction lining 7, which is set back slightly in relation to the outer contour of the pad-carrier plate 6, but is of identical contour. FIG. 23B), finally, represents the brake pad 5 likewise in side view.

(25) A further exemplary embodiment of the invention is illustrated in FIGS. 24A-24C. FIG. 24A) shows a brake pad 5 inserted into the brake carrier 3, wherein, for a form fit between the brake pad 5 and the brake carrier 3, the pad-carrier plate 6, as can be seen clearly in particular in FIG. 24C), has claws 16 formed on the mutually opposite peripheral regions bounding the longitudinal sides of the brake pad 5, each of the claws having a groove 17, in which a retaining pin 15 formed on the brake carrier lug 8, in the direction away from the floor of the pad slot, engages such that the brake pad 5 is retained in both directions of rotation of the brake disc 4, to be precise in each case by one of the two form fits.

(26) FIG. 24B) illustrates the attachment of the brake pad 5 on an enlarged scale as a detail of FIG. 24A). It can be seen here, and also in FIG. 24C), which represents the brake pad 5 as a single unit, that an extension 14 is formed on the pad-carrier plate 6, on the side located opposite the claw 16, said extension engaging in a matching mount of the brake carrier lug 8.

(27) The foregoing disclosure has been set forth merely to illustrate the invention and is not intended to be limiting. Since modifications of the disclosed embodiments incorporating the spirit and substance of the invention may occur to persons skilled in the art, the invention should be construed to include everything within the scope of the appended claims and equivalents thereof.

LIST OF REFERENCE SIGNS

(28) 1 Disc brake 2 Brake calliper 3 Brake carrier 4 Brake disc 5 Brake pad 6 Pad-carrier plate 7 Friction lining 8 Brake carrier lug 9 Protuberance 10 Protrusion 11 Recess 12 Supporting surface 13 Strut 14 Extension 15 Retaining pin 16 Claw 17 Groove