Brake lining assembly for a disk brake comprising a noise-reducing device

Abstract

A brake lining arrangement for a vehicle brake with a friction lining and a lining backing plate, having a receiving portion arranged in its lateral edge region for receiving a separate damping element, which laterally grasps the lining backing plate, wherein the damping element has a contact portion for contacting a portion of a brake caliper corresponding with the contact portion, and the damping element is adapted to be deformable or/and displaceable at least in sections upon a contacting.

Claims

1. A brake lining arrangement for a vehicle brake with a friction lining and a lining backing plate, having a receiving portion arranged in a lateral edge region thereof for receiving a separate damping element, which laterally grasps the lining backing plate, the damping element having a contact portion for contacting a portion of a brake carrier corresponding with the contact portion, and the damping element being adapted to be deformable or/and displaceable at least in sections upon a contacting, the damping element being of C- or U-shaped configuration and having two clamping limbs which are connected via the contact portion, the damping element clasping the lining backing plate in such a manner that the two clamping limbs are arranged on mutually opposite sides of the lining backing plate, wherein the damping element has, on each of the clamping limbs, respectively at least one spring projection angled off with respect to the clamping limb, wherein the receiving portion comprises a first recess on a first longitudinal side of the lining backing plate, wherein the receiving portion of the lining backing plate further has a second recess which is arranged on the first longitudinal side of the lining backing plate in a manner spaced apart from the first recess, the second recess being arranged at a shorter distance from the centre of the lining backing plate than the first recess.

2. The brake lining arrangement according to claim 1, the first recess having a flat region and/or an edge region, at least in sections sloping with respect to a centre plane of the lining backing plate, with a slope.

3. The brake lining arrangement according to claim 2, wherein the receiving portion of the lining backing plate further has a third and a fourth recess which is arranged on a second longitudinal side of the lining backing plate opposite the first longitudinal side of the lining backing plate, the third recess being formed like the first recess and the fourth recess being formed like the second recess.

4. The brake lining arrangement according to claim 3, wherein the damping element has on each of the two clamping limbs a fixing projection which at a distal end thereof has a predetermined material thickness, the fixing projections being adapted to be in engagement with the second and the fourth recess, the length of the second and the fourth recess along a longitudinal direction of the lining backing plate being respectively greater than the predetermined material thickness of the respective fixing projection.

5. The brake lining arrangement according to claim 3, wherein the spring projections are adapted to slide respectively along a slope in the respectively sloping edge region of the first and of the third recess, in order to cushion an impulse supplied to the lining backing plate.

6. The brake lining arrangement according to claim 1, wherein the damping element is formed materially integrally and has a cutout on each of the clamping limbs in the region of the spring projection.

7. The brake lining arrangement according to claim 1, wherein a lateral surface of the lining backing plate is spaced apart from the contact portion by at least 0.1 mm.

8. A disc brake arrangement for a vehicle system with a brake disc and a brake lining arrangement according to claim 1, the brake lining arrangement being arranged movably relative to the brake disc, in order to act on the brake disc by means of the friction lining.

9. The brake lining arrangement according to claim 1, wherein the at least one spring projection is angled toward a centre plane of the lining backing plate.

10. The brake lining arrangement according to claim 1, wherein the damping element further comprises a fixing projection disposed closer to a distal end of the damping element than the at least one spring projection.

11. A brake lining arrangement for a vehicle brake with a friction lining and a lining backing plate, having a receiving portion arranged in a lateral edge region thereof for receiving a separate damping element, which laterally grasps the lining backing plate, wherein the receiving portion comprises a first recess on a first longitudinal side of the lining backing plate, and wherein the receiving portion of the lining backing plate further has a second recess which is arranged on the first longitudinal side of the lining backing plate in a manner spaced apart from the first recess, the second recess being arranged at a shorter distance from the centre of the lining backing plate than the first recess.

12. A brake lining arrangement for a vehicle brake with a friction lining and a lining backing plate comprising a receiving portion, wherein the receiving portion comprises a first recess recessed below a surface of the lining backing plate, the first recess comprising a flat region running substantially parallel to a centre plane of the lining backing plate, followed by a sloping edge region closer to the centre of the lining backing plate than the flat region, wherein said sloping edge region slopes away from the centre plane, and wherein the flat region is disposed entirely within the first recess.

13. The brake lining arrangement according to claim 12, wherein the receiving portion of the lining backing plate further has a second recess which is arranged on the first longitudinal side of the lining backing plate in a manner spaced apart from the first recess, the second recess being arranged at a shorter distance from the centre of the lining backing plate than the first recess.

14. The brake lining arrangement according to claim 13, wherein the receiving portion of the lining backing plate further has a third and a fourth recess which is arranged on a second longitudinal side of the lining backing plate opposite the first longitudinal side of the lining backing plate, the third recess being formed like the first recess and the fourth recess being formed like the second recess.

15. The brake lining arrangement according to claim 12, wherein the first recess terminates flush with a lateral surface of the lining backing plate.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 shows a perspective general view of a brake lining arrangement according to the invention in a rear view;

(2) FIG. 2 shows a perspective detail view of the brake lining arrangement from FIG. 1, the damping element being shown separated from the lining backing plate;

(3) FIG. 3 shows a perspective detail view of the damping element according to the invention;

(4) FIG. 4 shows a sectional view of a detail of the brake lining arrangement shown in FIG. 1 with engaged damping element;

(5) FIG. 5 shows a plan view of the detail of the brake lining arrangement shown in FIG. 4;

(6) FIG. 6 shows a perspective general view of a disc brake arrangement according to the invention; and

(7) FIG. 7 shows a perspective detail view of the disc brake arrangement from FIG. 6.

DETAILED DESCRIPTION OF THE INVENTION

(8) In FIG. 1 a perspective general view of the brake lining arrangement 10 according to the present invention is shown. The brake lining arrangement 10 comprises a friction lining 12 and a lining backing plate 14, having a receiving portion 16 arranged in its lateral edge region for receiving a separate damping element 18, which laterally grasps the lining backing plate 14. The damping element 18 in this case has a contact portion 20 for contacting a portion 22 of a brake carrier 24 corresponding with the contact portion 20.

(9) The friction lining 12 is adapted to be pressed against a brake disc upon an actuation of a brake comprising the brake lining arrangement and thereby exert a frictional force on a brake disc (not shown). Upon a change of rotational direction of the brake disc, the brake lining arrangement thus moves owing to the above-described inherently present functional play with respect to the brake carrier 24. Conventional brake lining arrangements are thereby in danger of striking the brake 24, whereby a clearly perceptible and unpleasant striking noise is produced.

(10) Owing to the fact that the damping element 18 is deformable and displaceable in sections (here in particular with respect to the brake carrier 24 and the lining backing plate 14), it helps to avoid such striking noises. In the event of contact, i.e. from the time of the contacting, a force acts on the damping element along the direction F. Upon a contact, the damping element 18 is thus pushed (further) onto the receiving portion 16 laterally substantially along the direction F in the longitudinal direction of the lining backing plate 14. As a result, the damping element 18 can cushion or dampen upon the contacting or striking of the damping element 18 against the corresponding portion 22 of the brake carrier. As a rule, however, it is elastically deformed and in this case acts as a spring arranged between the lining backing plate and the brake carrier 24.

(11) The receiving portion 16 has a first recess 30 on a first longitudinal side 32 of the lining backing plate 14, the first recess 30 having a flat region 34 and an edge region 36, sloping with respect to a centre plane A of the lining backing plate 14, with a first slope 37. The receiving portion 16 of the lining backing plate 14 further has a second recess 38, which is arranged on the first longitudinal side 32 of the lining backing plate 14 in a manner spaced apart from the first recess 30. The second recess 38 is arranged at a shorter distance from the centre of the lining backing plate than the first recess 30. In other words, the second recess 38 is arranged further away from the lateral edge of the receiving portion 16, facing a lateral surface 62 of the lining backing plate 14, than the first recess 30.

(12) As shown in detail in FIGS. 3 to 5, the receiving portion 16 of the lining backing plate 14 furthermore has a third recess 42 and a fourth recess 44. The third and the fourth recess 42, 44 are arranged on a second longitudinal side 40 of the lining backing plate 14 opposite the first longitudinal side 32 of the lining backing plate 14 and configured mirror-inverted thereto, i.e. surface-symmetrical with respect to the centre plane A of the lining backing plate 14. In other words, the first and the third recess 30, 42 and the second and the fourth recess 38, 44 are arranged and configured respectively symmetrical to one another with respect to a centre plane A of the lining backing plate 14, the third recess 42 having a second slope 46. The first and the second slope 37, 46 are in this case oppositely formed or oriented with respect to the centre plane A of the lining backing plate 14. The friction lining 12 on the lining backing plate 14 is also arranged on the second longitudinal side 40.

(13) The damping element 18 provided in this embodiment is of U-shaped configuration. It is produced from a metal sheet of a predetermined material thickness d (here for example a spring steel, approx. 0.6 mm thick). The U-shaped damping element 18 has two clamping limbs 50, 52 which are connected to one another via the contact portion 20. The contact portion 20 and the two clamping limbs 50, 52 are of flat form and the edges 54, 56 between the contact portion 20 and the two clamping limbs 50, 52 are rounded.

(14) The U-shaped damping element 18 clasps the lining backing plate 14 in such a manner that the two clamping limbs 50, 52 of the lining backing plate 14 are arranged on mutually opposite sides of the lining backing plate 14 to fit the recesses 30, 38, 42, 44 symmetrically with respect to the centre plane A (cf. FIGS. 1, 3 and 4). As shown in particular in FIG. 4, the damping element 18 has on each of its two clamping limbs 50, 52 a fixing or locking projection 58, 60. These fixing projections 58, 60 are adapted to lock into the second recess 38 and into the fourth recess 44, i.e. to be in engagement with the second and the fourth recess 38, 44.

(15) The first and the third recess 30, 42 terminates flush with the lateral surface 62 of the lining backing plate 14 (cf. FIG. 4), so that there is no step between the lateral surface 62 of the receiving portion 16 and the respective recess, and the damping element 18 can thus be pushed laterally onto the receiving portion 16 with little effort. In this case, the flat portions of the first and of the third recess 30, 42 are respectively arranged between the first and the second slope 37, 46 and the lateral surface 62.

(16) The fixing projections 58, 60 are produced from the same piece of sheet metal as the rest of the damping element 18 and thus each have the same predetermined material thickness d at all distal ends. As shown in FIG. 4, the length of the second and of the fourth recess 38, 44 along a longitudinal direction of the lining backing plate 14 is respectively greater than the material thickness d. Thus, the spring is held captively on the lining backing plate 14 or the receiving section 16 and at the same time is displaceable or shiftable in the longitudinal direction (parallel to the centre plane A) of the lining backing plate 14.

(17) Moreover, the damping element 18 has, on each of its clamping limbs 50, 52, respectively at least one spring projection 68, 70 angled off with respect to that clamping limb. This can be clearly seen in particular in FIGS. 3 and 4. The spring projections 68, 70 are adapted to slide along the slopes 37, 46 of the first recesses 30, 42. As a result, in particular an impulse supplied to the lining backing plate 14 in the direction F is effectively cushioned. During the cushioning, the two clamping limbs of the damping element are displaced/shifted with respect to the receiving portion. The spring force here is linear. With the aid of material parameters and/or geometrical parameters, it is also possible to set a different dependence between the spring force on the shifting caused, for example an exponential increase in the spring force with the shifting.

(18) As shown in FIGS. 4 and 5, the lateral surface of the lining backing plate 14 is spaced apart from the contact portion 20 of the damping element 18. In the embodiment shown, this spacing is approx. 1 mm. Likewise, the contact portion 20 is spaced apart from the corresponding portion 22 of the brake carrier 24.

(19) In FIGS. 6 and 7 a disc brake arrangement 110 for a vehicle system is shown. In this case, FIG. 6 shows a general view and FIG. 7 shows a detail view of the region B marked in FIG. 6. This disc brake device 110 comprises a brake disc (not shown) and a brake lining arrangement 10 of the type described above, the brake lining arrangement 10 being arranged movably relative to the brake disc, in order to act on the brake disc by means of a friction lining 12. The brake lining arrangement 10 provided therefor has all of the features described above. In particular, in the case of this brake lining arrangement 10, it is provided that the damping element 18 has a contact portion 20 for contacting a portion 22 of a brake carrier 24 corresponding with the contact portion 20 and the damping element 18 is adapted to be deformable or/and displaceable at least in sections upon a contacting.

(20) In accordance with the provisions of the patent statutes, the principle and mode of operation of this invention have been explained and illustrated in its preferred embodiments. However, it must be understood that this invention may be practiced otherwise than as specifically explained and illustrated without departing from its spirit or scope.