COMMERCIAL VEHICLE AXLE WITH A DISC BRAKE

Abstract

A truck axle may include a disc brake having a brake caliper and brake pads for application onto the brake disc. The brake caliper has a first interior space with an opening on the side facing the brake disc for receiving an application device, and the brake caliper has a second interior space for receiving the brake disc. The truck axle with the disc brake is optimized with respect to cost and installation space, wherein the disc brake can easily be mounted on a truck axle. A brake caliper includes bolt guides, and a wheel carrier includes guide bolts that receive the bolt guides thereon. An axial space is defined within a bolt guide hole between a base of the bolt guide hole and the end of the guide bolts disposed within the bolt guide hole. The guide bolts may be integral with or separately connected to the wheel carrier.

Claims

1. A truck axle (1) with a disc brake (2), comprising: a wheel carrier (3) for arrangement of the disc brake (2) on the truck axle (1), wherein the disc brake (2) comprises a brake caliper (4) with a first bolt guide (6) arranged in the direction of a brake disc (5) and with a second bolt guide (6a) arranged in the direction of the brake disc (5), wherein the brake caliper (4) is arranged on the wheel carrier (3) via the first bolt guide (6) and via the second bolt guide (6a).

2. The truck axle (1) as claimed in claim 1, wherein the first bolt guide (6) has a bolt guide hole (7) which is closed in the direction of the brake disc (5), and the second bolt guide (6a) has a bolt guide hole (7a) which is closed in the direction of the brake disc (5).

3. The truck axle (1) as claimed in claim 1, wherein the first bolt guide (6) has a bolt guide hole (7) which is closed facing away from the brake disc (5) and the second bolt guide (6a) has a bolt guide hole (7a) which is closed facing away from the brake disc (5).

4. The truck axle (1) as claimed in claim 1, wherein the wheel carrier (3) has a first guide bolt (8, 8b) for receiving the first bolt guide (6) thereon and the wheel carrier (3) has a second guide bolt (8a, 8c) for receiving the second bolt guide (6a) thereon.

5. The truck axle (1) as claimed in claim 4, wherein the first guide bolt (8) and the second guide bolt (8a) are arranged on the wheel carrier (3) by forging or casting.

6. The truck axle (1) as claimed in claim 4, wherein the first guide bolt (8b) is arranged on the wheel carrier (3) via a first bolt screw (16) and the second guide bolt (8c) is arranged on the wheel carrier (3) via a second bolt screw (16a).

7. The truck axle (1) as claimed in claim 4, wherein the first guide bolt (8, 8b) is partially arranged in the bolt guide hole (7) of the first bolt guide (6) and the second guide bolt (8a, 8c) is partially arranged in the bolt guide hole (7a) of the second bolt guide (6a) to define a space between a base of the guide holes and the ends of the guide bolts.

8. The truck axle (1) as claimed in claim 4, wherein the first guide bolt (8) is formed at a right angle to a flange face (23) of the brake caliper (4), and the second guide bolt (8a) is formed at a right angle to the flange face (23) of the brake caliper (4).

9. The truck axle (1) as claimed in claim 6, wherein the first guide bolt (8b) and the second guide bolt (8c) are formed in the direction of the brake caliper axis (A).

10. The truck axle (1) as claimed in claim 1, wherein the brake caliper (4) is mounted on the wheel carrier (3) via the first bolt guide (6) and via the second bolt guide (6a) so as to slide axially along the brake caliper axis (A).

11. The truck axle (1) as claimed in claim 6, wherein a first sealing element (10) is arranged along the circumference of the first guide bolt (8, 8b) in the region of an opening (9, 9b) of the bolt guide hole (7), and a second sealing element (10a) is arranged along the circumference of the second guide bolt (8a, 8c) in the region of an opening (9a, 9c) of a bolt guide hole (7a).

12. The truck axle (1) as claimed in claim 11, wherein the first sealing element (10) is arranged via a groove (18) formed in a circumferential face of the first guide bolt (8, 8b), and the second sealing element (10a) is arranged via a groove (18a) formed in a circumferential face of the second guide bolt (8a, 8c).

13. The truck axle (1) as claimed in claim 11, wherein the first sealing element (10) is fixed to the first bolt guide (6) via a first screw-in element (11) in the region of the opening (9) of the bolt guide hole (7), and the second sealing element (10a) is fixed to the second bolt guide (6a) via a second screw-in element (11a) in the region of the opening (9a) of the second bolt guide hole (7a).

14. The truck axle (1) as claimed in claim 13, wherein the first screw-in element (11) and the second screw-in element (11a) are union nuts.

15. The truck axle (1) as claimed in claim 11, wherein the first sealing element (10) has a clamping face (21) and the clamping face (21) is clamped between the first guide bolt (8, 8b) and the first bolt guide (6), and the second sealing element (10a) has a clamping face (21a) and the clamping face (21a) is clamped between the second guide bolt (8a, 8c) and the second bolt guide (6a).

16. The truck axle (1) as claimed in claim 1, wherein the wheel carrier (3) is arranged on an outside (22) of the brake caliper (4).

17. The truck axle (1) as claimed in claim 1, wherein the wheel carrier (3) is arranged on an inside (22a) of the brake caliper (4) via a mounting opening (13) of the brake caliper (4).

18. The truck axle (1) as claimed in claim 1, wherein the brake caliper (4) is directly connected to the wheel carrier (3) without an additional brake carrier.

19. The truck axle (1) as claimed in claim 1, wherein the first guide bolt (8b) and the second guide bolt (8c) are independent components and are fitted in the first bolt guide (6) and in the second bolt guide (6a) independently of the wheel carrier (3).

20. The truck axle (1) as claimed in claim 1, wherein the brake caliper (4) is arranged to shift axially relative to the wheel carrier (3) in response to brake pad wear.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Selected exemplary embodiments of the present disclosure are explained below with reference to the figures, in which:

[0022] FIG. 1 is a cross-sectional side view of a truck axle with a disc brake,

[0023] FIG. 2 perspective front view of the truck axle with a disc brake according to FIG. 1,

[0024] FIG. 3 is a cross-sectional side view a truck axle with a disc brake having a first guide bolt in another embodiment,

[0025] FIG. 3a is a further cross-sectional side view of a truck axle with a disc brake having a second guide bolt according to FIG. 3,

[0026] FIG. 4 is perspective front view of a truck axle with a disc brake according to FIG. 3 and FIG. 3a,

[0027] FIG. 5 is a perspective rear view of a truck axle with a disc brake in another embodiment,

[0028] FIG. 5a is a front perspective front view of a truck axle with a disc brake according to FIG. 5.

DETAILED DESCRIPTION OF THE DRAWINGS

[0029] FIG. 1 shows a truck axle 1 with a disc brake 2 fitted to the truck axle 1. A wheel-side brake pad 12 and an application-side brake pad 12a, together with a brake disc 5, are fitted in the brake caliper 4 axially along a brake caliper axis A, via a mounting opening 13 of a brake caliper 4. The brake disc 5 is arranged axially between the wheel-side brake pad 12 and the application-side brake pad 12a, wherein the wheel-side brake pad 12 and the application-side brake pad 12a clamp the brake disc 5 during a braking process of a vehicle 14 in which the truck axle 1 with the disc brake 2 is fitted, and thus brake the vehicle 14.

[0030] The brake caliper 4 furthermore has a first bolt guide 6 (FIG. 3) and a second bolt guide 6a (FIG. 3a). The first bolt guide 6 has a first bolt guide hole 7 (FIG. 3) formed as a blind hole, and the second bolt guide 6a has a second bolt guide hole 7a formed as a blind hole (FIG. 3a). To fix the disc brake 2 to the brake caliper 1 on an outside 22 of a wheel carrier 3, a first guide bolt 8 and a second guide bolt 8a (FIG. 2) are cast onto the wheel carrier 3 on a side of the wheel carrier 3 facing away from the wheel. The side facing away from the wheel is the side of the wheel carrier 3 which faces the vehicle 14. The first guide bolt 8 and the second guide bolt 8a are formed at right angles to a flange face 23 (FIG. 2) of the brake caliper 4.

[0031] The first guide bolt 8 engages axially inside the first bolt guide 6 via an opening 9 of the bolt guide hole 7 of the first bolt guide 6. The second guide bolt 8a (FIG. 2) engages axially inside the second bolt guide 6a via an opening 9a of the bolt guide hole 7a of the second bolt guide 6a. The movement of the brake caliper 4 is guaranteed by a distance AB (FIG. 1) of 20 mm between a base 15 of the bolt guide hole 7 of the first bolt guide 6 and the first guide bolt 8, and by a distance AB1 of 20 mm between a base 15a of the bolt guide hole 7a of the second bolt guide 6a and the second guide bolt 8a (FIG. 3a, in which the second guide bolt 8a is designated the second guide bolt 8c).

[0032] To protect against the penetration of environmental influences, a first sealing element 10, formed as a bellows as shown in FIG. 1, is arranged on the first guide bolt 8 by a first screw-in element 11 configured as a union nut. Also, a second sealing element 10a, formed as a bellows, is arranged on the second guide bolt 8a by a second screw-in element 11a configured as a union nut (FIG. 2). After arranging the disc brake 2 on the wheel carrier 3, the first union nut 11 is screwed onto the opening 9 of the bolt guide hole 7 of the first bolt guide 6, and the second union nut 11a is screwed onto the opening 9a of the bolt guide hole 7a of the second bolt guide 6a (FIG. 2). For dismantling D (FIG. 1 and FIG. 3), the first union nut 11 is unscrewed from the first bolt guide 6 and the second union nut 11a is unscrewed from the second bolt guide 6a. Then the entire disc brake 2 may be withdrawn as one piece from the wheel carrier 3 of the truck axle.

[0033] FIG. 2 shows a perspective front view of the truck axle 1 with the disc brake 2. The brake disc 5 is not shown, in order to clarify the connection of the brake caliper 4 to the wheel carrier 3. In particular as shown the first guide bolt 8 of the wheel carrier 3 with the first sealing element 10 and, arranged axially parallel thereto, the second guide bolt 8a of the wheel carrier 3 with the second sealing element 10a.

[0034] FIG. 3 and FIG. 3a show a second embodiment of the truck axle 1 with the disc brake 2 from FIG. 1 and FIG. 2. In the second embodiment, the disc brake 2 is secured to the wheel carrier 3 via a first bolt screw 16 and a second bolt screw 16a. For mounting, according to FIG. 3, a first guide bolt 8b (not connected to the wheel carrier 3) is brought into the opening 9 of the bolt guide hole 7 of the first bolt guide 6. One side of the first sealing element 10, formed as a bellows, is fixed to the first guide bolt 8b via a groove 18 of the first guide bolt 8b. The second side of the first sealing element 10 opposite the first side is configured as a clamping face 21, and the clamping face 21 is partially arranged in the bolt guide hole 7 of the first bolt guide 6 between the first guide bolt 8b and an inner wall 19 of the first bolt guide 6. Then the first bolt screw 16 engages, via a first passage opening 17 of the wheel carrier 3, in the first guide bolt 8b (not connected to the wheel carrier 3), and fixes the first guide bolt 8b to the wheel carrier 3. Similarly, FIG. 3a shows a second guide bolt 8c (not connected to the wheel carrier 3) which is brought into the opening 9a of the bolt guide hole 7a of the second bolt guide 6a. One side of the second sealing element 10a, formed as a bellows, is fixed to the second guide bolt 8c via a groove 18a of the second guide bolt 8c. The second side of the second sealing element 10a opposite the first side is configured as a clamping face 21a, and the clamping face 21a is partially arranged in the bolt guide hole 7a of the second bolt guide 6a between the second guide bolt 8a and an inner wall 19a of the second bolt guide 6a. Then the second bolt screw 16a engages, via a second passage opening 17a of the wheel carrier 3, in the second guide bolt 8c (which is not connected to the wheel carrier 3), and fixes the second guide bolt 8c to the wheel carrier 3.

[0035] FIG. 4 shows a perspective front view of the second embodiment of the truck axle 1 with the disc brake 2 from FIG. 3 and FIG. 3a. The brake disc 5 is not shown, in order to clarify the connection of the brake caliper 4 to the wheel carrier 3. FIG. 4 again illustrates that the brake caliper 4 is connected to the wheel carrier 3 by the first bolt guide 6 (FIG. 3) via a first bolt screw 16, and the second bolt guide 6a is connected to the wheel carrier 3 via the second bolt screw 16a. The brake caliper 4 is arranged on the wheel carrier 3 so as to be rotationally inhibited by the first bolt screw 16 and the second bolt screw 16a.

[0036] FIG. 5 and FIG. 5a show a third embodiment of the truck axle 1 with a disc brake 2 according to FIG. 1 to FIG. 4. The brake disc 5, the wheel-side brake pad 12 and the application-side brake pad 12a are not shown, in order to clarify the connection of the brake caliper 4 to the wheel carrier 3.

[0037] In the third embodiment, the arrangement of the wheel carrier 3 on an inside 22a of the brake caliper 4 via the mounting opening 13 of the brake caliper 4 is shown. The first bolt guide 6 (FIG. 3) has an inner opening 9b (FIG. 5) of the bolt guide hole 7 (FIG. 1) and a base 15b (FIG. 5a) facing away from the wheel carrier 3. The second bolt guide 6a (FIG. 3a) again has an inner opening 9c (FIG. 5) of the bolt guide hole 7a (FIG. 3a) and a base 15c (FIG. 5a) facing away from the wheel carrier 3. The first guide bolt 8 is arranged on the brake caliper 4 via the inner opening 9b of the bolt guide hole 7 of the first bolt guide 6, and the second guide bolt 8a is arranged on the brake caliper 4 via the inner opening 9c of the bolt guide hole 7a of the second bolt guide 6a.

[0038] FIGS. 5 and 5a show opposite sides of the same embodiment, and therefore the bases 15b and 15c define the interior axial space between the base of the bolt guide holes 7 and 7a and the end of the guide bolts 8 and 8a. FIGS. 5 and 5a therefore show how the guide bolts 8 and 8a can be received in the bolt guides 6 and 6a in the opposite direction from that shown in FIGS. 1, 3, and 3a.

[0039] While the above description constitutes the preferred embodiments of the present invention, it will be appreciated that the invention is susceptible to modification, variation and change without departing from the proper scope and fair meaning of the accompanying claims.