BRAKE LINING AND BRAKE LINING RETENTION DEVICE OF A DISC BRAKE

Abstract

A brake lining retention device for a disc brake of a motor vehicle. The brake lining retention device includes a brake carrier fixed at the vehicle side and having a lining shaft for receiving a brake lining, wherein the lining shaft is delimited at the brake disc leading side in relation to a main rotation direction of the brake disc and delimited at the brake disc trailing side by a lining horn-like member of the brake carrier. The brake lining retention device includes a brake lining guided in the lining shaft and has a lining retention member and a friction lining fixed thereto, and a resilient element supported on a lining horn-like member and a support face of the lining retention member, wherein the face is adjacent to the lining horn-like member and the resilient element is inserted in a recess of the lining retention member.

Claims

1. A brake lining retention device of a disc brake comprising: a brake carrier which is fixed at the vehicle side and which has a lining shaft for receiving a brake lining, wherein the lining shaft is delimited at the brake disc leading side in relation to a main rotation direction (MRD) of the brake disc and delimited at the brake disc trailing side by a lining horn-like member of the brake carrier; a brake lining which is guided in the lining shaft and which has a lining retention member and a friction lining which is fixed thereto; a resilient element which is supported on a lining horn-like member and a support face of the lining retention member, which face is adjacent to this lining horn-like member, wherein the resilient element is inserted in a recess of the lining retention member.

2. The brake lining retention device according to claim 1, wherein the resilient element is supported on the leading-side lining horn-like member.

3. The brake lining retention device according to claim 1, wherein a depth of the recess and the resilient element are constructed so that the resilient element can be introduced completely into the recess in the loaded state.

4. The brake lining retention device according to claim 1, wherein the resilient element is supported on the lining retention member at least at two locations and is supported on the lining horn-like member at only one location.

5. The brake lining retention device according to claim 1, wherein the recess is a groove, in particular a longitudinal groove.

6. The brake lining retention device according to claim 1, wherein the resilient element is produced from a material having a round or oval cross-section.

7. The brake lining retention device according to claim 1, wherein the resilient element is secured at a location in such a manner that it does not change its position in the case of the brake lining being inserted into the lining shaft.

8. The brake lining retention device according to claim 1, wherein the recess has at a location a recess, in which an end of the resilient element is inserted or is retained in a positive-locking manner.

9. The brake lining retention device according to claim 1, wherein a width of the recess has at a maximum 50% of the thickness of the lining retention member.

10. The brake lining retention device according to claim 2, wherein the abutment location of the resilient element on the leading-side lining horn-like member is eccentric with respect to the mean force support (friction force) of the brake lining on the trailing-side lining horn-like member.

11. The brake lining retention device according to claim 2, wherein the abutment location of the resilient element on the leading side lining horn-like member is located in the upper half, preferably in the upper third, of the lining horn-like member.

12. The brake lining retention device according to claim 1, further comprising wherein a brake calliper which engages over a brake disc and which is supported on the brake carrier in a floating manner.

13. A brake lining for being received in a lining shaft of a brake carrier of a brake lining retention device of a disc brake, which carrier is fixed at the vehicle side, wherein in particular the lining shaft is delimited at the brake disc leading side in relation to a main rotation direction (MRD) of the brake disc and delimited at the brake disc trailing side by a lining horn-like member of the brake carrier respectively, comprising: a lining retention member and a friction lining which is fixed thereto, wherein a lining horn-like member support face of the lining retention member has a recess for receiving a resilient element.

14. The brake lining according to claim 13, wherein the recess is a groove.

15. The brake lining according to claim 11, further comprising a resilient element which is inserted in the recess.

16. The brake lining according to claim 15, wherein a depth of the recess and the resilient element are constructed in such a manner that the resilient element in the loaded state can be completely introduced into the recess.

17. The brake lining according to claim 15, wherein the resilient element is produced from a material having a round or oval cross-section

18. The brake lining according to claim 15, wherein the recess has at a location a recess in which an end of the resilient element is inserted and/or is secured in a positive-locking manner.

19. A motor vehicle, in particular a utility vehicle, comprising a brake lining retention device for a disc brake including, a brake carrier which is fixed at the vehicle side and which has a lining shaft for receiving a brake lining, wherein the lining shaft is delimited at the brake disc leading side in relation to a main rotation direction (MRD) of the brake disc and delimited at the brake disc trailing side by a lining horn-like member of the brake carrier; a brake lining which is guided in the lining shaft and which has a lining retention member and a friction lining which is fixed thereto; a resilient element which is supported on a lining horn-like member and a support face of the lining retention member, which face is adjacent to this lining horn-like member, wherein the resilient element is inserted in a recess of the lining retention member.

Description

BRIEF SUMMARY OF THE DRAWINGS

[0040] FIG. 1 is a lateral plan cross-sectional view of a brake lining retention device according to an embodiment of the present disclosure;

[0041] FIG. 2 is a lateral plan cross-sectional view of a brake lining retention member with a resilient element according to an embodiment of the present disclosure; and

[0042] FIG. 3 is a perspective view of the brake lining retention member from FIG. 2; and

[0043] FIG. 4 is a lateral plan cross-sectional view of a brake lining retention device known from the prior art.

DETAILED DESCRIPTION

[0044] In the following description of the Figures, terms such as top, bottom, left, right, front, rear, etc., relate exclusively to the exemplary depiction selected in the respective Figures and position of the disc brake, the lining carrier plate and the brake carrier. Those terms are not intended to be understood in a limiting manner, that is to say, these terms may change as a result of different operating positions or the mirror-symmetrical configuration or the like.

[0045] FIG. 1 is a lateral plan cross-sectional view of a brake lining retention device according to an embodiment of the present disclosure. In this instance, FIG. 1 shows a brake carrier 2, which is known per se, of a disc brake, for example, a floating calliper brake. In this instance, the brake carrier 2 can be constructed as a separate component, as shown here, or as an integral component of a brake calliper. In order to fix the brake carrier 2 to a vehicle axle, it is generally provided with holes, in which screws or bolts can be introduced and retain the brake carrier on the vehicle axle.

[0046] In this instance, a lining carrier plate which is known per se (also referred to as a lining back plate) of a brake lining 10 is designated 11, of which only the lining carrier plate 11 can be seen in FIG. 1 and at the rear side (which cannot be seen in FIG. 2) of which a friction lining 17 (which can be seen in FIG. 3) is fixed. In order to receive friction particles which are produced during braking operation at the friction face, a thin groove 18 can be formed in the friction lining 17. The brake carrier 2 is constructed with respective leading-side and trailing-side lining horn-like members 3, 4 which support the lining carrier plate 11. The lining horn-like members 3 and 4 and the bridge portion 7 which connects them form the lining shaft in which the brake lining 10 is guided.

[0047] The carrier horn-like member 3 constitutes in this case the leading-side lining horn-like member 3 because it is the rear lining horn-like member in the main rotation direction MRD of the brake disc, that is to say, the rotation direction of the brake disc during forward travel of the motor vehicle. The lining horn-like horn-like member 4 is accordingly the trailing-side lining horn-like member. The lining horn-like members 3, 4 are each constructed as carriers with a linear support face 5, 6 which is directed towards the brake lining, that is to say, those support faces 5, 6 of the leading-side and trailing-side lining horn-like member are parallel. The lining horn-like member support faces 19 of the lining carrier plate are adjacent to those support faces 5, 6, that is to say, the lateral outer faces of the lining carrier plate 11, with which the lining carrier plate 11 can be supported on the support faces 5, 6 of the lining horn-like members 3, 4 when the lining carrier plate has been introduced into the lining shaft.

[0048] A recess which is in the form of a groove 12 and in which a resilient element 20, in this instance a wire spring comprising ring steel, is formed in the lining back plate 11 in one of the lining horn-like member support faces 19. The recess is formed in the leading-side lining horn-like member support face, whereby the lining back plate 11 is pressed against the leading-side lining horn-like member 3 of the brake carrier 2 at the trailing side of the brake disc. In this case, the resilient element 20 can be completely introduced into the groove 12 and therefore eliminate occurrences of play from zero millimetres. In the non-compressed state of the resilient element, the resilient element projects from the groove 12 and thereby projects beyond the groove walls 13.

[0049] The resilient element (spring-like element) 20 is supported in this instance in the lining back plate 11 at two locations 22 and 23, that is to say, the resilient element 20 is positioned at the two locations 22 and 23 on the groove base 14. However, the resilient element 20 is in contact with the lining shaft or the leading-side lining horn-like member 3 only one location 21. Redundancy and jamming of the brake lining 10 in the lining shaft are thereby prevented. In this case, the abutment location 21 on the lining shaft is located in a rounded portion of the resilient element 20 in order to reduce contact friction.

[0050] Furthermore, the abutment location 21 is advantageously located eccentrically with respect to the simplified force support at the trailing side and in the shown embodiment radially further at a greater radius because in this instance the occurrences of play may be greater as a result of the assembly.

[0051] This can better be seen in FIG. 2 which is an enlarged lateral plan cross-sectional view of the brake lining retention member 10 with a resilient element 20 from FIG. 1.

[0052] The resultant force vector of the mean force support at the trailing side acts at the point P, through which the dot-dash horizontal line extends. The abutment location 21 on the leading-side lining horn-like member 3 is located at the trailing side in a state eccentric relative thereto with the spacing d from the resultant force vector of the mean force support. The location 21 is located in relation to the resultant force vector of the mean force support at the trailing side above this force vector, that is to say, radially at a greater radius and therefore nearer the outer peripheral side of the brake disc (not shown).

[0053] The resilient element 20 is in this instance fixed at least at one location in such a manner that it does not change its position during insertion of the brake lining 10 into the lining shaft and can move freely in at least one direction in order to ensure the resilient path in a torsion-free manner. To this end, in this instance a recess 15 is formed in a lower end region S of the groove 12 and an end 24 of the resilient element is inserted therein in order to form a positive-locking retention member, which end 24 is curved in a hook-like manner.

[0054] Although the present disclosure has been described with reference to specific embodiments, it is evident to a person skilled in the art that different changes can be carried out and equivalents can be used as replacements without departing from the scope of the present disclosure. Furthermore, many modifications can be carried out without leaving the associated scope. Consequently, the present disclosure is not intended to be limited to the disclosed embodiments but instead is intended to include all the embodiments which fall within the scope of the appended patent claims.

LIST OF REFERENCE NUMERALS

[0055] 1 Brake lining retention device [0056] 2 Brake carrier [0057] 3 Leading-side lining horn-like member [0058] 4 Trailing-side lining horn-like member [0059] 5 Support face of the leading-side lining horn-like member [0060] 6 Support face of the trailing-side lining horn-like member [0061] 7 Bridge portion [0062] 10 Brake lining [0063] 11 Lining retention member, for example, lining carrier plate [0064] 12 Recess, for example, groove [0065] 13 Groove wall [0066] 14 Groove base [0067] 15 Recess [0068] 17 Friction lining [0069] 18 Groove [0070] 19 Support face of the lining retention member (lining horn-like member support face) [0071] 20 Resilient element, for example, wire spring [0072] 21 Support location on lining horn-like member [0073] 22, 23 Support location on lining retention member [0074] 24 Curved end of the resilient element [0075] 40 Brake lining retention device [0076] 41 Lining retention member, for example, lining carrier plate [0077] 42 Play [0078] 46 Support face [0079] MRD Main rotation direction [0080] P Trailing-side mean force support location [0081] S Fixing location