Brake carrier for a disc brake

Abstract

A brake carrier (1) for a disc brake (10) of a utility vehicle has a frame-like main part with two bridge struts (2, 3), which are oriented parallel to one another and on each of which a lining housing (4, 5) for receiving a brake lining (13) is integrally formed, and respective disc-encompassing elements (6, 7), which connect the ends of the bridge struts (2, 3) to one another, the main part (41) lower face, which faces away from the lining housings (45), being equipped with a dust-collecting frame (5), the inner faces of which face an interior (55) used to receive the brake disc (2) and consist of a dust-collecting material (52). The invention also relates to a disc brake.

Description

[0001] 2023PF00365 11.09.2024

[0002] Brake carrier for a disc brake

[0003] DESCRIPTION

[0004] The invention relates to a brake carrier for a disc brake of a commercial vehicle according to the preamble of claim 1.

[0005] The invention further relates to a disc brake for a commercial vehicle according to the preamble of claim 12.

[0006] Types of brake carriers for disc brakes are known in a variety of variants from the prior art, for example from DE 10 2021 126 787 A1.

[0007] Environmental requirements and the resulting changes in legal frameworks will lead to increased demands for the prevention of particulate matter in the future. This necessitates the development of technical solutions for disc brakes for commercial vehicles that are capable of minimizing brake dust, especially the particulate matter component of brake dust, and ideally preventing its emission into the environment.

[0008] Existing technical solutions are largely designed to direct and collect brake dust from the space surrounding the disc brake through a filter, with or without the aid of compressed air. This usually requires restricting the surrounding space by installing cover plates or shields around the wheel brake.

[0009] Such a solution is known, for example, in the aforementioned DE 10 2021 126 787 A1. The solution described there has proven itself in practice.

[0010] It remains fundamentally problematic to capture the brake dust generated during braking using such encapsulations, as the conditions in the wheel well and within a rim, due to the airflow, cause a diffuse turbulence of the brake dust.

[0011] Furthermore, complete encapsulation by cover plates is neither possible nor desirable, since a complete 2023PF00365

[0012] - 2 -

[0013] Encapsulation would lead to undesirable heating of the brake pads or brake disc.

[0014] The object of the present invention is therefore to provide a brake carrier and a disc brake with such a brake carrier which enables the simple capture of brake dust.

[0015] The problem is solved by a brake carrier having the features of claim 1 and by a disc brake having the features of claim 12.

[0016] The brake carrier according to the invention has a frame-like base body with two bridge struts aligned parallel to each other, on each of which a pad recess for receiving a brake pad is formed, as well as disc surrounds connecting the ends of the bridge struts to each other.

[0017] A dust collection frame is arranged on an underside of the base body facing away from the pad slots, wherein the inner sides of the dust collection frame facing an interior space serving to accommodate the brake disc consist of a dust collection material.

[0018] By arranging such a dust collection frame below the frame-like base body of the brake carrier, it is easily possible to capture brake dust generated in the immediate vicinity of the brake pads and the brake disc.

[0019] Advantageous embodiments of the invention are the subject of the dependent claims.

[0020] According to an advantageous embodiment of the invention, the dust collection frame has a support frame, the inner walls of which are at least partially lined with the dust collection material.

[0021] The two-part design of the dust collection frame allows for the selection of a stable material for the support frame that holds the dust collection material. 2023PF00365

[0022] - 3 -

[0023] According to another advantageous embodiment, the dust collection frame has a connection area for fixing it to the underside of the base body of the brake carrier.

[0024] This allows the dust collection frame to be easily screwed, clamped or glued to the underside of the frame-like base body.

[0025] In an advantageous further development, the connection area for fixing the support frame on the underside of the base body is bent away from the interior to the outside.

[0026] This allows the dust collection material to be positioned in close proximity to the brake disc.

[0027] The dust collection material is preferably a dust filter material, in particular steel wool, a fleece or a ceramic filter material.

[0028] In one preferred design, the dust-collecting material is bonded to the support frame. Depending on the strength of the dust-collecting material, other fastening methods are also conceivable.

[0029] It is also advantageous to rivet the filter material to the sheet metal. Attaching it to punched-out hooks in the sheet metal is also technically simple and particularly cost-effective.

[0030] When using a steel wool fleece as a dust filter material, a fleece thickness of 5 to 20 mm has proven advantageous, as this creates a sufficiently long path over which the particles from the airflow can settle on the dust filter material.

[0031] Furthermore, when using steel wool, it is advantageous to choose a wire diameter between 30 pm and 120 pm, with a specific weight of the steel wool between 800g / m³. 2 and 1300 g / m² 2 .

[0032] The density of the dust filter material allows the airflow, carrying the trapped dust particles, to pass through the material without significant pressure resistance. The residence time of the dust particles in the 2023PF00365

[0033] - 4 -

[0034] The dust filter material allows the dust particles to travel a sufficiently long distance to adhere to the steel wool wires.

[0035] According to an advantageous embodiment, the support frame consists of a sheet metal in order to permanently withstand the harsh conditions during the operation of the disc brake.

[0036] The disc brake according to the invention for a commercial vehicle comprises a brake disc, a frame-like brake carrier extending over a portion of the brake disc, brake pads inserted into the pad slots of the brake carrier, and a brake caliper slidably arranged on the brake carrier with a pad slot opening through which the brake pads can be inserted and removed.

[0037] The brake carrier is designed as described above. The dust collection frame overlaps another section of the brake disc, closer to the axis of rotation of the brake disc.

[0038] According to an advantageous embodiment, the brake caliper pad shaft opening is covered by a shaft cover.

[0039] Preferred embodiments of the invention are explained in more detail below with reference to the accompanying drawings.

[0040] They show:

[0041] Figure 1 shows a schematic isometric view of an embodiment of a disc brake according to the invention.

[0042] Figure 2 shows another schematic isometric representation of the disc brake according to Figure 1 from a different perspective.

[0043] Figure 3 shows a schematic isometric close-up view of a brake carrier of the disc brake according to Figure 1 with a dust collection frame arranged on it.

[0044] Figure 4 shows a schematic isometric representation of a variant of a dust collection frame, 2023PF00365

[0045] Figure 5 is a schematic isometric representation of the dust collection frame shown in Figure 4 from a different perspective and

[0046] Figure 6 shows a schematic isometric exploded view of the dust collection frame according to Figures 4 or 5 with support frame and dust collection material.

[0047] In the following figure descriptions, terms such as top, bottom, left, right, front, rear, etc., refer exclusively to the exemplary representation and position of the disc brake, brake carrier, base body, bridge struts, dust collection frame, support frame, and the like as chosen in the respective figures. These terms are not to be understood as restrictive; that is, these references may change due to different working positions, mirror-symmetrical design, or similar factors.

[0048] In Figures 1 and 2, reference numeral 1 denotes a total embodiment of a disc brake according to the invention.

[0049] The disc brake 1 has a brake disc 2 and a frame-like brake carrier 4 that overlaps a section of the brake disc 2.

[0050] As can be clearly seen in Figure 3, the brake carrier 4 has lining channels 45 into which brake linings (not shown) can be inserted.

[0051] A brake caliper 3 is slidably arranged on the brake carrier 4, with a pad shaft opening covered in figure 1 by a shaft cover 6, through which brake pads can be inserted and removed.

[0052] The pad shaft opening or the shaft cover 6 is secured by a pad retaining bracket 7, wherein the pad retaining bracket 7 is detachably attached to the brake caliper 3 in a manner known per se.

[0053] As shown particularly in Figure 3, the brake carrier 4 consists of a frame-like base body 41 with two parallel bridge struts 42, each of which has a lining channel 45 for receiving a brake lining formed on it. 2023PF00365

[0054] - 6 -

[0055] The lining channels 45 are limited in the circumferential direction of the brake disc 2 by support horns 44 extending upwards from the base body 41 in the direction of the lining channel opening.

[0056] To form the frame-like base body 41, the ends of the bridge struts 42 are connected to each other by disc-shaped grips 43. As can be clearly seen in Figures 1 and 2, the disc-shaped grips 43 overlap the brake disc 2 in axial direction A, where A marks the axis of rotation of the brake disc 2.

[0057] The brake carrier 4 has a connection area 46 on one of its longitudinal sides, extending downwards from the frame-like base body 41 towards the axis of rotation of the brake disc 2. This connection area serves to secure the brake carrier 4 to a vehicle axle, for example by bolting it to an axle flange of a vehicle axle of the commercial vehicle. The connection area 46 is provided with bores 47 for receiving screw bolts.

[0058] As further shown in Figure 3, a dust collection frame 5 is arranged on an underside of the base body 41 facing away from the covering shafts 45.

[0059] The dust collection frame 5 also overlaps the brake disc 2 in a frame-like manner, as shown in Figures 1 and 2, specifically a section of the brake disc 2 closer to the axis of rotation A of the brake disc 2.

[0060] An interior space 55 of this dust collection frame 5, which serves to accommodate the brake disc 2, has inner surfaces made of a dust collection material 52.

[0061] In the preferred embodiment of such a dust collection frame 5 shown here, it consists, as is shown in particular in Figure 6, of a support frame 51, the inner walls of which are at least partially lined with the dust collection material 52.

[0062] The support frame 51 preferably consists of a metal sheet.

[0063] To secure the dust collection frame 5 to the underside of the base body 41, the dust collection frame 5 has a connection area 53. This 2023PF00365

[0064] - 7 -

[0065] The connection area 53 for fixing the support frame 51 to the underside of the base body 41 is, as can be clearly seen in Figure 3, preferably bent outwards away from the interior 55.

[0066] Bores 54 in the connection area 53 allow the support frame 51 to be screwed to the underside of the base body 41.

[0067] It is also conceivable, for example, to clamp or glue the dust collection frame 5 to the underside of the base body 41.

[0068] The dust-collecting material 52 itself is preferably a dust filter material, for example in the form of steel wool, a fleece or a ceramic filter material.

[0069] In the embodiment shown here, as can also be clearly seen in Figures 4 and 5, the dust-trapping material 52 is also arranged in a frame-like manner on all circumferential sides of the support frame 51.

[0070] The width of the dust collection frame 5 in an X-direction shown in Figures 3 and 4 is preferably dimensioned such that the inner walls of the dust collection material 52 protrude as close as possible to the friction surfaces of the brake disc 2 in order to allow as much brake dust as possible to accumulate in the dust collection material 52.

[0071] The dust-trapping material 52 is preferably bonded to the carrier material. Depending on the strength of the dust-trapping material 52, it is also conceivable to attach it to the carrier frame 51 in another way, for example by hanging it or the like.

[0072] The dust-trapping material can also be applied to the other parts that define the interior, preferably cover plates.

[0073] For axially secure positioning of the dust collection frame 5, a partial area of ​​the outer surface of the dust collection frame 5 is in axial overlap with the connection area 46 of the brake carrier 4.

[0074] Another advantageous embodiment for attaching a dust collection frame 5 to the brake carrier 4 consists of using a partial area of ​​the 2023PF00365

[0075] - 8 -

[0076] brake carrier 4, for example, to enclose the disc surround 43 with sheet metal tabs molded onto the dust collection frame 5.

[0077] This means that an existing disc brake can also be equipped with a dust collection device without changing the brake carrier 4 or the brake itself.

[0078] It is also conceivable to secure the dust collection frame 5 to the brake carrier 4 using metal cable ties and eyelets or hooks provided for this purpose in the dust collection frame 5.

[0079] The dust-trapping material 52 is designed as a fleece made of steel wool according to a preferred embodiment.

[0080] The thickness of the nonwoven fabric is preferably between 5 mm and 20 mm.

[0081] Furthermore, the wire diameter of the steel wool is preferably between 30 pm and 120 pm. The specific gravity of the steel wool is preferably between 800 g / m³. 2 and 1300 g / m² 2 .

[0082] 2023PF00365

[0083] - 9 -

[0084] Reference symbol list

[0085] 1 disc brake

[0086] 2 brake discs

[0087] 3 brake calipers

[0088] 4 brake carriers

[0089] 41 Basic body

[0090] 42 Bridge strut

[0091] 43 Bridge strut

[0092] 44 Carrier horn

[0093] 45 Cover shaft

[0094] 46 Connection area

[0095] 47 bore

[0096] 5 dust collection frames

[0097] 51 support frames

[0098] 52 Dust-trapping material

[0099] 53 Connection area

[0100] 54 bore

[0101] 55 Interior

[0102] 6 Manhole cover

[0103] 7 pad retaining clips

[0104] A turning axis

Claims

2023PF00365 - 10 - Claims 1. Brake carrier (4) for a disc brake (1) of a commercial vehicle, comprising a frame-like base body (41) with two bridge struts (42) aligned parallel to each other, on each of which a pad recess (45) for receiving a brake pad is formed, and disc surrounds (43) connecting the ends of the bridge struts (42) to each other, characterized in that a dust collection frame (5) is arranged on an underside of the base body (41) facing away from the pad recesses (45), wherein inner sides of the dust collection frame (5) facing an interior space (55) serving to receive the brake disc (2) consist of a dust collection material (52).

2. Brake carrier (1 ) according to claim 1 , characterized in that the dust collection frame (5) has a support frame (51 ) the inner walls of which are at least partially lined with the dust collection material (52).

3. Brake carrier (1 ) according to claim 1 or 2, characterized in that the dust collection frame (5) has a connection area (53) for fixing to the underside of the base body (41 ) of the brake carrier (1 ).

4. Brake carrier (1 ) according to claim 3, characterized in that the connection area (53) for fixing the carrier frame (51 ) on the underside of the base body (41 ) is bent outwards away from the interior (55).

5. Brake carrier (1 ) according to one of the preceding claims, characterized in that the dust collection material (52) is a dust filter material, in particular steel wool, a fleece or a ceramic filter material.

6. Brake carrier (1 ) according to claim 5, characterized in that the dust-catching material (52) is bonded to the carrier frame. 2023PF00365 - 11 - 7. Brake carrier (1 ) according to one of the preceding claims, characterized in that the carrier frame (51 ) consists of a metal sheet.

8. Brake carrier (1 ) according to one of the preceding claims, characterized in that the dust-catching material (52) is designed as a fleece made of steel wool.

9. Brake carrier (1 ) according to claim 8, characterized in that the thickness of the fleece is between 5 mm and 20 mm.

10. Brake carrier (1 ) according to claim 8 or 9, characterized in that the wire thickness of the steel wool is between 30 pm and 120 pm.

11. Brake carrier (1) according to claim 8, 9 or 10, characterized in that the specific gravity of the steel wool is between 800g / m³ 2 and 1300 g / m 2 amounts.

12. Disc brake (1) for a commercial vehicle, comprising - one brake disc (2), - a frame-like brake carrier (4) that extends over a section of the brake disc (2), - brake linings inserted into the lining slots (45) of the brake carrier (4), - a brake caliper (3) slidably arranged on the brake carrier (4) with a pad shaft opening through which the brake pads can be inserted and removed, characterized in that - the brake carrier (4) is designed according to one of the preceding claims, - wherein the dust collection frame (5) overlaps a further section of the brake disc (2) which is closer to the axis of rotation of the brake disc (2).

13. Disc brake (10) according to claim 12, characterized in that the pad shaft opening is covered by a shaft cover (6).

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