Disc brake

Abstract

A disc brake including a brake caliper, which includes two lateral wings which tangentially encompass at least one brake disc, and which is displaceably guided on a brake carrier by two guiding elements, which are arranged opposite with respect to each other and radially with respect to the axis of the brake disc between the brake caliper and the brake carrier, in which a first guiding element in the area of one wing consists of a combination of a sliding bore and a guide pin being guided within it, and in which a second guiding element is configured within the opposite wing as a combination of at least two cooperating guiding surfaces.

Claims

1. A disc brake including a brake caliper, said brake caliper comprising: first and second lateral wings tangentially encompassing at least one brake disc, said brake caliper being displaceably guided on a brake carrier by means of two guiding elements that are arranged opposite with respect to each other and radially with respect to an axis of the at least one brake disc between the brake caliper and the brake carrier, a first guiding element in an area of the first lateral wing, the first guiding element including a sliding bore and a guide pin being guided within the sliding bore, and a second guiding element is configured within the second lateral wing, the second guiding element including at least two cooperating guiding surfaces at least one of said guiding surfaces being integral with the second lateral wing or made as a separate component to be fixed to the second lateral wing, said brake carrier comprises at least one guiding section having at least one guiding surface, which is guided by at least one corresponding guiding surface of the second lateral wing, thereby forming a second guiding element.

2. The disc brake according to claim 1, in which the second guiding element in axial direction is arranged substantially in proximity to a center of the second lateral wing.

3. The disc brake according to claim 2, in which the second guiding element is arranged radially above the at least one brake disc.

4. The disc brake according to claim 1, in which the guiding elements are arranged radially and externally of a braking surface of the at least one brake disc.

5. The disc brake according to claim 1, in which the brake carrier comprises two guiding sections having guiding surfaces, which are guided at guiding surfaces being arranged on the edges of the second lateral wing.

6. The disc brake according to claim 5, in which a guiding section of the brake carrier comprises a guiding surface and opposite thereto a guiding surface for guidance of a brake pad holder.

7. The disc brake according to claim 1, in which the second lateral wing comprises a recess, in which a guiding section of the brake carrier is guided in a sliding manner.

8. The disc brake according to claim 7, in which at least one spring element is arranged between the guiding surfaces of the brake carrier and of the second lateral wing, which spring element extends axially over the length of the recess.

9. The disc brake according to claim 8, in which the spring element is guided in the recess in a displaceable manner.

10. The disc brake according to claim 1, in which at least one spring element is arranged between the guiding surfaces of the brake carrier and the second lateral wing.

11. The disc brake according to claim 10, in which the spring element can be compressed thereby generating a return force.

12. The disc brake according to claim 1, in which the guiding surfaces of the brake carrier and/or of the wings are provided with a friction-reducing and/or wear-resistant coating.

13. A disc brake having a brake caliper, said brake caliper comprising: a first lateral wing, a second lateral wing, at least one brake disc, wherein said first and second lateral wings tangentially encompass said at least one brake disc, wherein said brake caliper is displaceably guided on a brake carrier by means of two guiding elements that are arranged opposite with respect to each other and radially with respect to an axis of said at least one brake disc between the brake caliper and the brake carrier, a first guiding element positioned in adjacent to the first lateral wing, said first guiding element having a sliding bore and a guide pin that is guided within the sliding bore, and at least one guiding section having at least one guiding surface that is guided by at least one corresponding guiding surface of said second lateral wing, thereby forming a second guiding element, wherein at least one of said guiding surfaces being integral with said second lateral wing or made as a separate component to be fixed to said second lateral wing.

14. The disc brake according to claim 13, in which the second guiding element in axial direction is arranged substantially in proximity to a center of the second lateral wing.

15. The disc brake according to claim 14, in which the second guiding element is arranged radially above the at least one brake disc.

16. The disc brake according to claim 13, in which the guiding elements are arranged radially and externally of a braking surface of the at least one brake disc.

17. The disc brake according to claim 13, in which the brake carrier comprises two guiding sections having guiding surfaces, which are guided at guiding surfaces being arranged on the edges of the second lateral wing.

18. The disc brake according to claim 17, in which a guiding section of the brake carrier comprises a guiding surface and opposite thereto a guiding surface for guidance of a brake pad holder.

19. The disc brake according to claim 13, in which at least one spring element is arranged between the guiding surfaces of the brake carrier and the second lateral wing.

20. The disc brake according to claim 13, in which the guiding surfaces of the brake carrier and/or of the wings are provided with a friction-reducing and/or wear-resistant coating.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) Further features and advantages of the present invention will become apparent from the embodiments as described in connection with the enclosed drawings, in which

(2) FIG. 1 shows a first embodiment of the disc brake according to the invention in perspective view from one side;

(3) FIG. 2 shows the first embodiment according to the invention in perspective view from the other side;

(4) FIG. 3 shows the first embodiment according to the invention from the rear in partial sections;

(5) FIG. 4 shows an enlarged partial view of the recess in one wing of the brake caliper according to the first embodiment of the invention;

(6) FIG. 5 shows a second embodiment according to the invention in partial sectional view;

(7) FIG. 6 shows a third embodiment according to the invention in partial sectional view;

(8) FIG. 7 shows the brake caliper according to the third embodiment in a perspective view; and

(9) FIG. 8 shows a fourth embodiment according to the invention in a partial sectional view.

DETAILED DESCRIPTION OF THE INVENTION

(10) A brake caliper 1 being made of one piece and having a housing section 1.1 for receiving a brake actuation mechanism and a bridge section 1.2 being opposite to said housing section 1.1, which at both sides are connected by wings 1.3 and 1.4 which tangentially surround a brake disc not shown, is displaceably guided on a brake carrier 2 being stationary in relation to the vehicle frame.

(11) For that purpose the disc brake comprises two guiding elements which are spaced apart radially with respect to the center of it and with respect to the rotational axis of the brake disc, respectively, namely a guiding element 3 in the area of the first wing 1.3 and a second guiding element 4 in the area of the second wing 1.4, as can be seen from FIG. 3.

(12) The first guiding element 3 consists of a combination of a guide pin 5, which is screwed into the carrier 2 and which is guided in a corresponding sliding bore 6 of the brake caliper 1, perhaps by using corresponding bearing elements, in a sliding manner.

(13) As can be seen from FIGS. 2 to 4, according to the invention the second guiding element 4 is provided within the second wing 1.4.

(14) According to the embodiment as shown in these FIGS. 2 to 4 this guiding element 4 is made by a guiding section 7 of the brake carrier 2, which engages with a corresponding recess 8 in wing 1.4 in a sliding manner.

(15) The guiding section 7 is realized in the form of a nose-like protrusion, which comprises two guiding surfaces 7.1 and 7.2, which are running in parallel and are spaced apart with respect to each other and which are guided at corresponding guiding surfaces 8.1 and 8.2 of the recess 8 by interposition of a leaf shaped spring element 9 in a sliding manner.

(16) As FIG. 4 shows, the spring element 9 with an external section 9.1 radially at the outside encompasses the surface of the guiding section 7, in which sections 9.2 do extend from section 9.1 in axial direction over the axial length of the recess 8. The free ends 9.3 of the sections 9.2 are slightly curved and do substantially attach at corresponding curvatures of the ends of the recess 8 in a congruent manner.

(17) Upon displacement of the brake caliper 1 in relation to the carrier 2 during a brake actuation these free ends 9.3 can move along the curvature of the recess 8 towards each other and by that can set the spring element 9 in this area slightly under tension, which results in the generation of a return force which, after termination of the brake actuation, is able to slightly support the return movement of the brake caliper 1 in relation to the guiding section 7 of the brake carrier 2.

(18) In FIG. 5 a second embodiment according to the invention is shown.

(19) In this the recess 10 for receiving the guiding section 7 is not open, but at the inside being integral with the wing 1.4. Therefore, the guiding section 7 of the brake carrier 2 is made shorter and comprises a further guiding surface 7.3, which cooperates with a corresponding guiding surface 10.1 of the recess 8.

(20) As in particular FIG. 2 shows, the guiding section 7 and the recess 8, when seen in axial direction, are substantially provided in the area being radial above the brake disc and almost in the center of the wing 1.4. This shall also apply for the embodiment according to FIG. 5.

(21) In FIG. 6 a third embodiment according to the invention is shown.

(22) In this, the brake carrier 2 comprises two guiding sections 11 and 12, which each comprise a guiding surface 11.1 and 12.1, respectively.

(23) The guiding sections 11 and 12 are orientated with respect to each other substantially in a right angle and are arranged in such a way that these, at the outside, do attach to the radially free edges 13 and 14 of the wing 1.4, and in particular at their guiding surfaces 13.1 and 14.1, respectively.

(24) The guiding section 11 is made as a vertical web, so that, beside the guiding surface 11.1 for the guidance of the brake caliper 1 at the carrier 2, it comprises a further guiding surface 11.2, at which the brake pad holder 15 of the brake pad 16 being provided at the inside at the housing section 1.1 of the brake caliper 1 is guided.

(25) In FIG. 8 a fourth embodiment according to the invention is shown which is an alternative to the embodiment according to FIG. 6.

(26) For that the wing 1.4 at the inside comprises a further guiding surface 13.2 in the area of its upper edge 13, which is inclined with respect to the first guiding surface 13.1. In a corresponding way a further guiding surface 11.3 is provided at the web 11. In the area of the lower edge 14 of the wing 1.4 there is no guidance between the brake caliper 1 and the brake carrier 2.