Brake carrier for a disc brake

Abstract

A brake carrier (1) for a disc brake (10) of a commercial vehicle has a frame-like base body with two bridge struts (2, 3) aligned parallel to one another, on each of which a pad shaft (4, 5) for receiving a brake pad (13) is formed, and respective disc surrounds (6, 7) connecting the ends (21, 22, 31, 32) of the bridge struts (2, 3) to one another, wherein a cavity (61) is provided in at least one of the two disc surrounds (6, 7), wherein the cavity (61) has at least one inlet opening (62) for sucking in wear particles generated during braking, which is open towards an interior space (8) surrounded by the frame-like base body, and an outlet opening (63) for discharging the wear particles entering through the inlet opening (62), wherein the outlet opening (63) is designed as a plug-in groove, or the outlet opening (63) into a side surface (64) of the disc wraparound (6,7), wherein the connection area (23) for securing the brake carrier (1) to a vehicle axle is formed as part of one of the bridge struts (2, 3). Furthermore, a disc brake is described.

Description

[0001] The invention relates to a brake carrier for a disc brake of a commercial vehicle according to the preamble of claim 1.

[0002] The invention further relates to a disc brake for a commercial vehicle according to the preamble of claim 6.

[0003] Generic 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.

[0004] EP 3369959 A1 and DE 10 2021127424 A1 each describe disc brakes with extraction devices. DE 102016105169 A1 describes a braking device and a brake dust extraction device.

[0005] Environmental requirements and the resulting changes in legislation will lead to increased requirements for the prevention of particulate matter in the future. This makes it necessary to develop technical solutions for disc brakes in commercial vehicles that are capable of minimizing brake dust, especially the particulate matter content of brake dust, as much as possible and ideally prevent its emission into the environment.

[0006] Existing technical solutions for this are largely designed to filter and collect brake dust from the space surrounding the disc brake, with or without the aid of compressed air. This usually requires limiting the surrounding space by installing cover or shielding plates around the wheel brake.

[0007] Such a solution is known, for example, from the above-mentioned DE 10 2021 126 787 A1. The solution described therein has proven itself in practice.

[0008] It is still fundamentally problematic to capture the brake dust generated during braking using such encapsulations, since the conditions in the wheel housing and within a rim cause the airstream to diffusely swirl the resulting brake dust.

[0009] Furthermore, complete encapsulation by cover plates is not possible and not desirable, as complete encapsulation would lead to undesirable heating of the brake pads or the brake disc.

[0010] The object of the present invention is therefore to provide a brake carrier and a disc brake with such a brake carrier, with which the escape of brake dust can be largely prevented even without encapsulation.

[0011] The stated object is achieved by a brake carrier having the features of claim 1 and by a disc brake having the features of claim 6.

[0012] 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 shaft is formed for receiving a brake pad.

[0013] The brake carrier also has disc wraps that connect the ends of the bridge struts to each other.

[0014] A cavity is provided in at least one of the two disc surrounds.

[0015] This cavity has at least one inlet opening for sucking in wear particles generated during braking, which is open to an interior space surrounded by the frame-like base body, and an outlet opening for discharging the wear particles entering through the inlet opening.

[0016] By creating a cavity in the existing brake carrier of a disc brake, brake dust can be extracted at a suitable position, namely in the area of ​​at least one of the disc wraps, without having to mount additional cover or shielding plates on the disc brake.

[0017] Advantageous embodiments and further developments are specified in the subclaims.

[0018] According to an advantageous embodiment, the cavity has exactly one inlet opening designed as an elongated hole.

[0019] This makes it easy to vacuum brake dust from both sides of the brake disc.

[0020] According to an alternative embodiment, the cavity has several, in particular three, inlet openings.

[0021] This allows an increase in the suction speed of the air drawn into the cavity through the inlet openings.

[0022] According to an advantageous further development, the inlet openings are arranged along a straight line.

[0023] According to a further preferred embodiment, the cavity extends parallel to an underside of the disc wraparound facing away from the lining shafts.

[0024] According to an advantageous embodiment, the outlet opening is arranged in an underside of the disc surround facing away from the lining shafts.

[0025] This allows easy installation of an extraction pipe to the outlet opening.

[0026] According to the invention, the outlet opening is designed as a plug-in groove.

[0027] The plug-in groove design also allows for easy connection of a suction pipe to direct the sucked-in brake dust to a collection container or filter located further away.

[0028] According to the invention, the outlet opening is introduced into a side surface of the disc wraparound facing away from a connection area of ​​the bridge strut, wherein the connection area for fixing the brake carrier to a vehicle axle is formed as part of one of the bridge struts.

[0029] The disc brake according to the invention comprises a brake disc, a frame-like brake carrier spanning a portion of the brake disc, and molded-on pad wells on both sides of the brake disc. Brake pads, each with a backing plate and a friction lining arranged on the backing plate, are inserted into the pad wells of the brake carrier. The disc brake further comprises a suction device for extracting wear particles generated during braking.

[0030] The brake carrier is designed as described above. The suction device comprises a cavity in at least one of the two disc wraps, which cavity is open via the at least one inlet opening to the interior space enclosed by the frame-like base body, as well as a suction pipe connected to the outlet opening.

[0031] According to an advantageous embodiment, the suction pipe is removably mounted on the outlet opening.

[0032] According to a further advantageous embodiment, the disc brake has a brake caliper that overlaps the brake disc and has a pad shaft opening that is covered by a cover plate.

[0033] Such a cover plate can be used to easily cover the space above the brake pads. The cover plate prevents air from escaping upwards and deflects the airstream. This reduces turbulence, thus reducing the required extraction power (negative pressure and volume flow) to capture the particles.

[0034] Such a cover plate can be attached to the pad retainer, secured by it, or attached to the brake calliper or carrier.

[0035] Preferred embodiments are explained in more detail below with reference to the accompanying drawings.

[0036] They show: Fig. 1 a schematic isometric representation of an embodiment variant of a brake carrier according to the invention, Fig. 2 another isometric view of the Fig. 1 shown brake carrier from a different perspective and with suction pipe attached to the outlet opening, Fig. 3 an enlarged detail of the area of ​​the brake carrier provided with the cavity according to Fig. 2 with the suction pipe removed, Fig. 4 one of the Fig. 3 corresponding representation of the section of the brake carrier from Fig. 2 with concealed suction pipe and three inlet openings, Fig. 5 one of the Fig. 4 corresponding representation of a section of a brake carrier with an inlet opening designed as an elongated hole, Fig. 6 a schematic isometric representation of a disc brake with a brake carrier installed therein according to one of the Fig. 1 to 5 and Fig. 7 a schematic isometric representation of the Fig. 6 shown disc brake with covered pad shaft opening of a brake caliper of the disc brake.

[0037] In the following description of the figures, terms such as top, bottom, left, right, front, rear, etc., refer exclusively to the exemplary representation and position of the brake carrier, pad shafts, brake pads, bridge struts, disc wrap, and the like chosen in the respective figures. These terms are not to be understood as limiting; i.e., these references may change due to different operating positions or the mirror-symmetrical design, etc.

[0038] In Fig. 1, the reference numeral 1 shows an embodiment of a brake carrier according to the invention for a Fig. 6 and Fig. 7 is designated disc brake 10.

[0039] The Fig. 6 and Fig. The disc brake 10 shown in Figure 7 further comprises a brake caliper 11, which also has a frame-like configuration and engages over a brake disc 12. The brake caliper 11 is movably, in particular displaceably, arranged on the brake carrier 2, which can be attached to a leg of a vehicle axle (not shown here). The brake caliper 3 is preferably a sliding caliper.

[0040] The brake calliper 11 has a central pad shaft opening 16 above the brake disc 12, through which brake pads 13 can be mounted and removed, in particular in order to replace them when changing the pads.

[0041] The brake carrier 1 has a frame-like base body with two parallel bridge struts 2, 3. A pad shaft 4, 5 for receiving a brake pad 13 is formed on each of the bridge struts 2, 3.

[0042] Respective ends 21, 22, 31, 32 of the bridge struts 2, 3 are connected to each other via a respective disc wrap 6, 7.

[0043] On bridge strut 2, as shown in the Fig. 1 to 5, a connection area 23 is formed which serves to fix it to a vehicle axle, for example by screwing it to an axle flange of a vehicle axle of the commercial vehicle.

[0044] One deck shaft 4 is formed above the connection area 23. The other deck shaft 5 is formed on the second bridge strut 3.

[0045] Each of the lining shafts 4, 5 is formed by an inlet-side support horn 41, 51, an outlet-side support horn 42, 52 and the bridge strut 2, 3 connecting the inlet-side support horn 41, 51 with the outlet-side support horn 42, 52.

[0046] The carrier horns 41, 42 and the bridge 2 form the application side of the brake carrier 1. Accordingly, the carrier horns 51, 52 and the bridge 3 form the reaction side of the brake carrier 1.

[0047] The brake carrier 1 is designed in such a way that a Fig. 6, the brake disc 12 overlaps the disc brake 10.

[0048] How to continue in the Fig. 1 and Fig. 3, a cavity 61 is provided in at least one of the two disc surrounds 6, 7.

[0049] In the embodiments shown, the cavity 61 is formed in the outlet-side disc surround 6.

[0050] The cavity 61 has at least one inlet opening 62 for sucking in wear particles generated during braking, which is open to an interior space 8 enclosed by the inner walls of the frame-like base body, and an outlet opening 63 for discharging the wear particles entering through the inlet opening 62 away from the brake carrier 1.

[0051] The interior 8 is, as in Fig. 6, in the state in which the brake carrier 1 is installed in the disc brake, it is essentially filled by a part of the brake disc 12.

[0052] As in the Fig. 1 to 4, the cavity 61 is accessible to the interior 8 of the brake carrier 1 via three inlet openings 62.

[0053] The inlet openings 62 are preferably designed as bores.

[0054] However, other shapes are also conceivable, for example with a square or rectangular cross-section.

[0055] It is also conceivable, as in Fig. 5, exactly one inlet opening 62 designed as an elongated hole is provided.

[0056] In the version according to Fig. 1 - 4 with the plurality of inlet openings 62, these are preferably arranged along a straight line, preferably parallel to the axis of rotation of the brake disc 12.

[0057] The abrasion of the friction material of the brake pads or abrasion of the brake disc 12 itself that accumulates in the cavity 61 during operation is conveyed through the outlet opening 63 via a suction pipe 9, shown as an example, into the Fig. 2 and Fig. 3, is led away from the brake carrier 1, preferably via a collecting container (not shown here) which is provided with a filter in which the abrasion is filtered out of the air led through the suction pipe 9.

[0058] The cavity 61 preferably extends parallel to an underside of the disc wraparound 6, 7 facing away from the lining shafts 4, 5.

[0059] In a preferred embodiment, the outlet opening 63 is introduced into an underside of the disc surround 6 facing away from the lining shafts 4, 5, as shown in the Fig. 1 and Fig. 3 is clearly visible.

[0060] To facilitate the assembly of the suction pipe 9, the outlet opening 63 is designed as a plug-in groove. The suction pipe 9 is accordingly designed with a plug-in geometry 92 extending from a base body 91, which can be inserted into the outlet opening 63 designed as a plug-in groove, as shown in Fig. 2 is shown.

[0061] Alternatively, it is also conceivable to introduce the outlet opening 63 in a side surface 64 of the disk wraparound 6 facing away from the connection area 23 of the bridge strut 2, as shown in the Fig. 4 to 6.

[0062] In this embodiment, the outlet opening 63 is preferably designed as a bore with a circular cross-section.

[0063] However, a different geometry is also conceivable here, for example a rectangular cross-sectional geometry of the outlet opening 63, to which a corresponding connection of a suction pipe 9 can be connected.

[0064] The suction device of the Fig. 6 accordingly has the cavity 61 in at least one of the two disc surrounds 6, 7, which cavity is open via the at least one inlet opening 62 to the interior space 8 surrounded by the frame-like base body, as well as the suction pipe 9 which can be connected to the outlet opening 63.

[0065] By providing the cavity 61 in the brake carrier 1 itself, it is possible to largely avoid encapsulation of the disc brake.

[0066] At the Fig.In the embodiment shown in Figure 7, the pad shaft opening 16 of the brake calliper 11 is closed by a cover plate 14 to improve the suction performance (negative pressure and volume flow).

[0067] The cover plate 14 can, for example, be attached to a pad retaining bracket 15 holding the brake pads 13 in the respective pad shaft 4, 5, be secured by this or be fastened to the brake calliper 11 or brake carrier 1. List of reference symbols 1 brake carrier 2 bridge struts 21 End 22 End 23 Connection area 24 bore 3 bridge struts 31 End 32 End 33 Connection area 34 bore 4 covering shaft 41 Carrier horn 42 Carrier Horn 5 Covering shaft 51 Carrier Horn 52 Carrier Horn 6 disc wrap 61 Cavity 62 Inlet opening 63 Outlet opening 64 side surface 7 Disc wrap 8 Interior 9 Suction pipe 10 disc brake 11 Brake caliper 12 brake disc 13 Brake pad 14 Manhole cover 15 pad retaining brackets 16 Covering shaft opening

Claims

[1] Brake carrier (1) for a disc brake (10) of a commercial vehicle, comprising - a frame-like base body with two bridge struts (2, 3) aligned parallel to each other, on each of which a pad shaft (4, 5) is formed for receiving a brake pad (13), - respective disc wraps (6, 7) connecting the ends (21, 22, 31, 32) of the bridge struts (2, 3) to each other, - wherein a cavity (61) is provided in at least one of the two disc surrounds (6, 7), - wherein the cavity (61) has at least one inlet opening (62) for sucking in wear particles generated during braking, which is open to an interior space (8) surrounded by the frame-like base body, and an outlet opening (63) for discharging the wear particles entering through the inlet opening (62), characterized by , that the outlet opening (63) is designed as a plug-in groove, or the outlet opening (63) is introduced into a side surface (64) of the disc wraparound (6, 7) facing away from a connection region (23) of the bridge strut (2, 3), wherein the connection region (23) for fixing the brake carrier (1) to a vehicle axle is designed as part of one of the bridge struts (2, 3). [2] Brake carrier (1) according to claim 1, characterized by that the cavity (61) has exactly one inlet opening (62) designed as an elongated hole. [3] Brake carrier (1) according to claim 1, characterized by that the cavity (61) has several, in particular three inlet openings (62). [4] Brake carrier (1) according to claim 3, characterized by that the inlet openings (62) are arranged along a straight line. [5] Brake carrier (1) according to one of the preceding claims, characterized by that the cavity (61) extends parallel to an underside of the disc wraparound (6, 7) facing away from the lining shafts (4, 5). [6] Disc brake (10) for a commercial vehicle, comprising - a brake disc (12), - a frame-like brake carrier (1) spanning a portion of the brake disc (12) with lining shafts (4, 5) formed on both sides of the brake disc (12), - brake pads (13) inserted into the pad slots (4, 5) of the brake carrier (2) with a respective back plate and a friction lining arranged thereon, - a suction device for extracting abrasion particles generated during braking, characterized by , that - the brake carrier (1) is designed according to one of the preceding claims, - wherein the suction device has the cavity (61) in at least one of the two disc surrounds (6, 7) which is open via the at least one inlet opening to the interior space (8) surrounded by the frame-like base body, and a suction pipe (9) adjoining the outlet opening (63). [7] Disc brake according to claim 6, characterized by that the suction pipe (9) is removably mounted on the outlet opening (63). [8] Disc brake (10) according to claim 6 or 7, with a brake calliper (11) overlapping the brake disc (12) with a lining shaft opening (16), characterized by that the lining shaft opening (16) is covered by a cover plate (14).

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