Extraction device for removing brake dust particles from a pneumatic braking system for a commercial vehicle, braking system, commercial vehicle

Abstract

Extraction device (100) for extracting brake dust particles from a pneumatic brake device (210) for a commercial vehicle (200), wherein the brake device (210) comprises a brake disc (215) rotatable in a rotational direction (R), a brake caliper (220) and a support (230) carrying the brake caliper (220), wherein the extraction device (100) comprises a base body (110) with an extraction line (115) arranged within the base body (110); the base body (110) has a connecting opening (112) for connecting the base body (110) to a vacuum port (120) for applying a vacuum (p) to the extraction line (115); the base body (110) has a branch (116) and an intake opening arrangement (117), wherein the intake opening arrangement (117) is fluidically connected to the connecting opening (112) via the suction line (115); the intake opening arrangement (117) is designed to encompass the brake disc (215);and the extraction device (100) is designed to be arranged in the direction of rotation (R) between the brake caliper (220) and the carrier (230).

Description

[0001] The disclosure relates to a suction device for extracting brake dust particles for a pneumatic braking device for a commercial vehicle, wherein the braking device comprises a brake disc rotatable in a direction of rotation, a brake caliper, and a support supporting the brake caliper. The disclosure also relates to a braking device for a commercial vehicle, wherein the braking device comprises a brake disc rotatable in a direction of rotation, a brake caliper, a support supporting the brake caliper, and a suction device, and to a commercial vehicle comprising a suction device and / or a braking device.

[0002] Disc brakes of the aforementioned type are well known and are used in commercial vehicles as friction brakes to decelerate the vehicle. Friction brakes operate on the friction principle. Brake pads supported by a brake caliper are brought into frictional action with a brake disc to generate braking action on the vehicle. The friction between the brake pads and the brake disc creates abrasion on the friction materials of the brake pads and the brake disc, known as brake dust. Brake dust particles are dust particles with a size of, for example, less than 10 µm, so-called particulate matter, which, due to their small particle size and chemical composition, can be classified as hazardous to health and harmful to the environment. The release of this particulate matter into the environment is therefore undesirable.It is therefore in the general interest to design disc brakes in such a way that the release of fine dust generated during braking into the environment is prevented as far as possible.

[0003] From document DE 10 2006 051 972 A1, a disc brake for a motor vehicle with a brake dust collection device is known. The brake dust collection device is designed as a housing which, in the direction of rotation of the brake disc, directly adjoins the brake caliper, which overlaps one area of ​​the brake disc, and which overlaps a limited further area of ​​the brake disc. The housing has several air inlet openings and separate air outlet openings. In addition, the housing has a brake dust retention device with additional brake dust inlet openings. The physical separation of the air inlet openings from the brake dust inlet openings is intended to enable the resulting brake dust to be directed into the brake dust retention device. The air flowing in through the air inlet openings is intended to additionally serve to cool the brake disc.

[0004] Further friction brake designs with brake dust collecting devices which extend over a limited angular section of the brake disc and are arranged downstream of the brake caliper of the friction brake are disclosed, for example, in the documents DE 10 2009 021 203 A1 and DE 10 2012 016 835 A1.

[0005] WO 2019 / 141926 A1 discloses a brake pad. The brake pad comprises a lining made of friction material and a plate supporting the lining. The pad comprises: a trailing edge located on the side where the disc can exit from an interface with the pad when the disc rotates in a direction of travel of the vehicle, and a leading edge; a collecting groove opening into the friction surface and located near the trailing edge. The pad has a trailing region including the trailing edge and the collecting groove, and a leading region including the leading edge, wherein the leading region has a chamfered portion such that an area of ​​a friction surface of the leading region increases as a thickness of the leading region decreases.

[0006] DE 10 2021 126 026 A1 discloses a disc brake, with a brake caliper which spans a brake disc and in which brake pads are arranged, each provided with a friction lining and a backing plate, which can each be pressed with their friction lining on both sides against friction ring surfaces of the brake disc, and with a suction pipe arrangement for sucking away abrasion material generated during braking, wherein the suction pipe arrangement comprises one or more suction pipes arranged directly on the two brake pads.

[0007] DE 10 2021 126 787 A1 discloses a disc brake with a brake caliper which spans a brake disc and in which brake pads are arranged, each provided with a friction lining and a backing plate, which can each be pressed with its friction lining on both sides against friction ring surfaces of the brake disc, and with a suction arrangement for suctioning off abrasion generated during braking, is characterized in that the suction arrangement has two suction pipe arrangements assigned to the respective brake layers and a cover connecting the suction pipe arrangements for at least partially covering the brake disc.

[0008] The disclosure is based on the object of enriching the state of the art and at least partially improving the above-mentioned aspects. In particular, the disclosure solves the problem of enabling effective extraction of brake dust and, for this purpose, providing an effectively manufacturable and space-saving extraction device.

[0009] The problem is solved by the subject matter of claim 1 and the subject matter of the further independent claims. The subclaims specify further developments of the disclosure.

[0010] According to one aspect of the disclosure, a suction device for extracting brake dust particles for a pneumatic braking device for a commercial vehicle is provided, wherein the braking device has a brake disc rotatable in a direction of rotation, a brake caliper, and a carrier carrying the brake caliper, wherein the suction device comprises a base body with a suction line arranged within the base body; the base body has a connecting opening for connecting the base body to a vacuum connection for applying a vacuum to the suction line; the base body has a branch and a suction opening arrangement, wherein the suction opening arrangement is fluidly connected to the connecting opening via the suction line; the suction opening arrangement is configured to encompass the brake disc;and the suction device is adapted to be arranged between the brake caliper and the carrier in the direction of rotation;

[0011] It was recognized that the arrangement of the suction device between the carrier and the caliper is suitable for effective suction of the brake particles, since the brake dust typically accumulates on the brake pads arranged on the brake caliper or on the disc brake in operative connection with the brake pads and can thus be suctioned off directly, in the direction of rotation, behind the accumulation of the brake particles at the brake pads.

[0012] The intake opening arrangement is designed to draw in air coming from the brake pads and / or the brake disc, optionally including brake particles. For this purpose, the intake opening arrangement can enable extraction on both sides of the brake disc and / or around the brake disc, i.e., on one lateral surface and on the two opposite sides of the brake disc. This enables direct extraction at the friction point or at the point where the brake particles or friction particles are generated.

[0013] The suction device comprises the base body. The base body includes the suction line for directing the air, potentially together with brake particles, from the intake port arrangement to the connecting port. The base body can be operatively connected to a vacuum connection at the connecting port to suction out the air and possibly the brake particles.

[0014] The intake opening arrangement is designed to surround the brake disc. In other words, by encompassing the brake disc, the intake opening arrangement is arranged in such a way that the intake opening arrangement is operatively connected to a circumferential surface of the brake disc and to the two sides of the brake disc facing the brake pads, in order to enable the suction of brake particles there.

[0015] Arranging the suction device between the brake caliper and the carrier enables a space-saving arrangement of the suction device and an arrangement of the suction opening arrangement directly on a section of the braking device where the brake particles accumulate. In addition, the arrangement of the suction device enables the suction device to be integrated into the carrier geometry, which can contribute to further savings in installation space. The suction device is therefore a device different from the carrier and the brake caliper. Arranging the suction device in the direction of rotation between the brake caliper and the carrier can mean that the suction device is arranged at least partially and in front of the carrier with respect to the direction of rotation of the brake disc when the vehicle is traveling forward.

[0016] Optionally, the extraction device is designed to be attached to the support. It was recognized that, for example, in the case of a floating caliper (i.e., a coaxially movable brake caliper), attachment to the support allows the brake caliper to move without affecting the extraction device and / or its pneumatic lines. Alternatively, for example, in the case of a fixed brake caliper (i.e., a fixed-position brake caliper), the extraction device can also be attached to the brake caliper.

[0017] Optionally, the intake opening arrangement has two intake openings. This makes it possible to provide one intake opening for each brake pad or friction surface of the brake disc, with each of the intake openings configured to extract the brake particles from one of the brake pads and / or friction surfaces. This enables effective and targeted extraction of brake particles.

[0018] Optionally, the suction line has a first cross-section between a first intake opening of the two intake openings and the connecting opening, and a second cross-section between a second intake opening of the two intake openings and the connecting opening, and the first cross-section is different from the second cross-section. It was recognized that the cross-section influences the flow resistance and thus the volume and / or mass flow of the air flowing through the suction line. Different cross-sections ensure uniform suction of the brake particles between both sides of the brake disc.

[0019] Optionally, the first cross-section is a minimum cross-section between the first intake opening and the connecting opening, and / or the second cross-section is a minimum cross-section between the second intake opening and the connecting opening. It has been recognized that the respective minimum cross-section between the first intake opening and the connecting opening and / or between the second intake opening and the connecting opening is crucial for the flow resistance and thus the extraction performance.

[0020] The extraction device can optionally be constructed in one piece or in multiple pieces. Effective assembly of the extraction device is particularly possible with a single-piece extraction device. The extraction device can be made of metal and / or a high-temperature-resistant plastic to meet thermal, mechanical, and chemical requirements. Alternatively, the extraction device can be constructed from sheet metal and / or in two pieces, or even in multiple pieces. The extraction device can be manufactured from two or more split sheet metal parts, for example, an upper shell and a lower shell, which are then welded together to form the extraction device.

[0021] Optionally, the suction device has a second vacuum connection, with the vacuum connection being located on the action side when installed, and the second vacuum connection being located on the reaction side when installed. This allows the suction opening arrangement to be subjected to a uniform or homogeneous vacuum, enabling the uniform extraction of air and possible brake particles.

[0022] Optionally, the intake opening arrangement is aligned coaxially and / or in the direction of rotation when assembled. It was recognized that this allows the effective cross section of the intake opening arrangement to be adjusted and / or increased. By aligning the intake opening arrangement in a coaxial direction, the intake opening arrangement can be aligned with the brake disc, and by aligning the intake opening arrangement in the direction of rotation, the intake opening arrangement can be aligned along the circumferential direction of the brake disc, along which air and therefore also brake particles move when the brake disc rotates. By aligning the intake opening arrangement in the direction of rotation, an intake opening arrangement arranged behind the brake caliper in the direction of rotation can be directed towards the brake pads, allowing brake particles accumulating on the brake pads to be directly sucked off.

[0023] According to one aspect of the disclosure, a braking device for a commercial vehicle is provided, wherein the braking device comprises a brake disc rotatable in a rotational direction, a brake caliper, a support supporting the brake caliper, and a suction device as described above. The suction device may comprise one or more of the optional and / or advantageous features described above in order to achieve an associated technical effect.

[0024] Optionally, the carrier has a recess, with the suction device arranged in the recess. This allows the suction device to be effectively integrated into the geometry of the carrier.

[0025] Optionally, the extraction device is attached to the support. For example, the extraction device can be attached to the support with a fastener to enable effective mounting and attachment of the extraction device to the support.

[0026] According to one aspect of the disclosure, a commercial vehicle comprising a suction device and / or a braking device as described above is provided. The suction device and / or the braking device may have one or more of the optional and / or advantageous features described above in order to achieve an associated technical effect.

[0027] Further features of the disclosure as well as its technical effects emerge from the figures and the description of the embodiments shown in the figures. Fig. 1 is a schematic representation of a commercial vehicle according to one aspect of the disclosure; Fig. 2 schematically shows a perspective view of a braking device according to one aspect of the disclosure; Fig. 3 schematically shows a perspective view of a suction device according to one aspect of the disclosure in the assembled state; Fig. 4 schematically shows a perspective view of a suction device according to an aspect of the disclosure in the assembled state; Fig. 5 schematically shows a perspective view of a carrier and a suction device according to one aspect of the disclosure in the assembled state; Fig. 6 schematically shows a perspective view of a carrier and a suction device according to an aspect of the disclosure in the assembled state; Fig. 7 schematically shows a perspective view of a carrier and a suction device according to an aspect of the disclosure in the assembled state; Fig. 8 schematically shows a perspective view of a carrier and a suction device according to an aspect of the disclosure in the assembled state; Fig. 9 schematically shows a perspective view of a carrier and a suction device according to an aspect of the disclosure in the assembled state; Fig. 10 schematically shows a perspective view of a suction device according to one aspect of the disclosure; Fig. 11 schematically shows a perspective view of a suction device according to one aspect of the disclosure; Fig. 12 schematically shows a perspective view of a suction device according to one aspect of the disclosure; and Fig. 13 schematically shows a perspective view of a suction device according to one aspect of the disclosure.

[0028] Fig. 1 shows a schematic representation of a commercial vehicle 200 according to one aspect of the disclosure. The commercial vehicle 200 is a land vehicle, for example, a tractor and / or a trailer of a multi-unit vehicle, a single-unit vehicle, and / or a bus.

[0029] The depiction of the commercial vehicle 200 is limited to the components essential to the disclosure. It should be understood that, in addition to the depicted components, the commercial vehicle 200 includes other components required for the operation of the commercial vehicle 200, such as a drivetrain, a chassis, and / or a body. The depiction of such components has been omitted in favor of reproducing the disclosure.

[0030] The commercial vehicle 200 has a braking device 210 for decelerating the movement of the commercial vehicle 200. The commercial vehicle 200 optionally has a pneumatic system (not shown) configured to supply the optionally pneumatic and / or electropneumatic braking device 210 with compressed air and / or to provide a negative pressure p for extracting brake particles.

[0031] The braking device 210 comprises a brake disc 215 rotatable in a rotational direction R, a brake caliper 220, a support 230 supporting the brake caliper 220, and a suction device 100. The brake disc 215 is configured to rotate about an axis (not shown) defining the rotational direction R. A direction parallel to the axis is the coaxial direction K, which extends into the image plane as indicated by a cross and is thus arranged perpendicular to the rotational direction R.

[0032] The braking device 210 has two brake pads 216 that can be brought into operative connection with the brake disc 215 as friction partners (see Fig. 2 to 9). The brake caliper 220 partially surrounds the brake disc 215 and is configured to apply the brake pads 216 above the brake disc 215 to achieve a braking effect. In doing so, brake particles or brake dust may accumulate on a respective friction surface between the brake disc 215 and the brake pads 216.

[0033] The suction device 100 is designed to be arranged in the rotation direction R between the brake caliper 220 and the carrier 230. The suction device 100 has a base body 110 (see Fig. 2 to 13) with a suction line 115 arranged within the base body 110. The base body 110 has a connecting opening 112 (see Fig. 10 and Fig. 12) for connecting the base body 110 to a vacuum connection 120 for applying a vacuum p to the suction line 115. The pneumatic system (not shown) can be connected to the vacuum connection 120 for this purpose.

[0034] The suction device 100 has an intake opening arrangement 117. The intake opening arrangement 117 is fluidly connected to the connecting opening 112 via the suction line 115. Thus, by pressurizing the suction line 115 via the vacuum port 120 and the connecting opening 112, a negative pressure p can be generated in the suction line 115, due to which an air stream potentially containing brake particles is sucked in through the intake opening arrangement 117. The air stream potentially containing brake particles is then transported through the suction line 115 and can be fed to a reservoir and / or filter (not shown) to remove the brake particles from the air stream.

[0035] The braking device 210 and in particular the suction device 100 is further described with reference to Fig. 2 to 9. The suction device 100 is also described with reference to Fig. 10 to 13 described.

[0036] As only schematically shown in Fig. As shown in Figure 1, the suction device 100 has a second vacuum connection 123, wherein the vacuum connection 120 is arranged on the action side in the mounted state, and the second vacuum connection 123 is arranged on the reaction side in the mounted state. One of the vacuum connections 120, 123 is arranged on the vehicle side, and the other of the vacuum connections 120, 123 is arranged away from the vehicle. Fig. In the embodiments shown in Figures 2 to 13, the suction device 100 has only the vacuum connection 120; the second vacuum connection 123 can then be dispensed with.

[0037] Fig. 2 schematically shows a perspective view of a braking device 210 according to one aspect of the disclosure. The braking device 210 is the one described with reference to Fig. 1 described braking device 210. Fig. 2 is made with reference to Fig. 1 described.

[0038] The brake caliper 220 according to Fig. 2 is a floating caliper and is thus mounted displaceably relative to the support 230. The suction device 100 is fastened to the support 230. For this purpose, the braking device 210 has a fastening means 213 designed as a screw, which passes through a fastening opening 214 (see Fig. 10 and Fig. 12) projects into the support 230 for fastening the suction device 100 to the support 230.

[0039] The suction device 100 has a base body 110 with the suction line 115 arranged within the base body 110 (see Fig. 1). Fig. 2 also shows the vacuum connection 120 connected to the connection opening 112 for applying a negative pressure p to the suction line 115.

[0040] The base body 110 has an intake opening arrangement 117 (see Fig. 5 to 13). The suction opening arrangement 117 is fluidly connected via the suction line 115 to the connecting opening 112 and thus to the vacuum connection 120.

[0041] The intake opening arrangement 117 is designed to encompass the brake disc 215. For this purpose, the base body 110 has a branch 116. The base body 110 also encompasses the brake disc 215. The base body 110 is thus arranged in operative connection with a lateral surface of the brake disc 215 and with the two sides of the brake disc 215 facing the brake pads 216 in order to enable the suction of brake particles there. The intake opening arrangement 117 is directed towards the brake disc 215 and / or the brake pads 216 (see Fig. 5 to 13).

[0042] The suction device 100 is configured to be arranged between the brake caliper 220 and the carrier 230 in the direction of rotation R. Thus, the suction device 100 is arranged behind the brake caliper 220 and behind the brake pads 216, as viewed in the direction of rotation R. Brake particles released from the brake disc 215 and / or the brake pads 216 thus move in the direction of rotation R with an air stream flowing in the direction of rotation R and can be effectively suctioned away by the suction device 100.

[0043] Fig. Figure 3 schematically shows a perspective view of a suction device 100 according to one aspect of the disclosure in the assembled state. Fig. 3 a detail of the Fig. 2, wherein the brake disc 215 is hidden. Fig. 3 is made with reference to Fig. 1 and Fig. 2 described.

[0044] The support 230 has a recess 232. The recess 232 provides installation space for arranging the suction device 100. The suction device 100 is arranged in the recess 232 or cutout. The suction device 100 and the recess 232 or the support 230 are configured such that the suction device 100 occupies the same amount of and / or less installation space in the radial direction than the support 230 and / or the brake caliper 220.

[0045] Fig. Fig. 4 schematically shows a perspective view of a suction device 100 according to one aspect of the disclosure in the assembled state. Fig. 4 a detail of the Fig. 2 and Fig. 3, wherein the brake disc 215 is hidden. Fig. 4 is made with reference to Fig. 1 to 3.

[0046] The suction device 100 takes up the same amount and / or less installation space in the coaxial direction K than the carrier 230 and / or the brake caliper 220. Thus, the suction device 100 can be arranged between the carrier 230 and the brake caliper 220 in a space-saving and space-effective manner.

[0047] Fig. Figure 5 schematically shows a perspective view of a carrier 230 and a suction device 100 according to one aspect of the disclosure in the assembled state. Fig. 5 a detail of the Fig. 2 to 4, wherein the brake disc 215 is shown and the brake caliper 220 is hidden. Fig. 5 is made with reference to Fig. 1 to 4 described.

[0048] The base body 110 or the suction opening arrangement 117 has two suction openings 118, 119, i.e. a first suction opening 118 and a second suction opening 119, wherein Fig. 5 due to the perspective only the second intake opening 119 can be seen.

[0049] In this case, the gripping of the intake opening arrangement 117 of the brake disc 215 is Fig. 5 in conjunction with Fig. 6 can be seen.

[0050] Fig. Fig. 6 schematically shows a perspective view of a carrier 230 and a suction device 100 according to an aspect of the disclosure in the assembled state. Fig. 6 a detail of the Fig. 5 shown embodiment. Fig. 6 is made with reference to Fig. 5 described.

[0051] Fig. 6 shows the first intake opening 118 and illustrates that the intake opening arrangement 117 encompasses the brake disc 215. The first intake opening 118 is directed toward the vehicle-side side of the brake disc 215, and the second intake opening 119 is directed toward the side of the brake disc 215 facing away from the vehicle.

[0052] The side of the suction device 100 facing the brake caliper 220 is flat, i.e., level, and thus fits into the geometry of the carrier 230. Thus, the suction device 100 can potentially be retrofitted, in particular without modifying the brake caliper 220, by providing the carrier 230 with the recess 232 and the suction device 100.

[0053] The suction device 100 of the Fig. 2 to 6 is also with reference to Fig. 10 and Fig. 11 described.

[0054] Fig. Fig. 7 schematically shows a perspective view of a carrier 230 and a suction device 100 according to an aspect of the disclosure in the assembled state. The suction device 100 according to Fig. 7 is an alternative embodiment to the suction device 100 according to Fig. 2 to 6. In Fig. 7 the brake disc 215 and the brake caliper 220 are hidden. Fig. 7 is made with reference to Fig. 1 to 6, wherein the differences of the embodiments of the suction device 100 according to Fig. 2 to 6 are described.

[0055] The base body 110 has two legs 124 upstream of the branch 116. One of the two intake openings 118, 119 is arranged on each of the legs 124. One of the legs 124 is arranged on the vehicle-side side of the brake disc 215, and another of the legs 124 is arranged on the vehicle-facing side of the brake disc 215. The legs 124 extend from the branch 116 counter to the direction of rotation R in the direction of the brake pads 216. The recess 232 is designed to partially encompass the legs 124.

[0056] The gripping of the brake disc 215 by the intake opening arrangement 117 and the legs 124 by Fig. 7 in conjunction with Fig. 8 and Fig. 9 can be seen.

[0057] Fig. Figure 8 schematically shows a perspective view of a carrier 230 and a suction device 100 according to one aspect of the disclosure in the assembled state. Fig. 8 a detail of the Fig. 7 shown embodiment. Fig. 8 is made with reference to Fig. 7 described.

[0058] Fig. Figure 8 shows the first intake opening 118 and illustrates that the intake opening arrangement 117 and the legs 124 surround the brake disc 215. The first intake opening 118 is directed toward the vehicle-side of the brake disc 215.

[0059] Fig. Figure 9 schematically shows a perspective view of a carrier 230 and a suction device 100 according to one aspect of the disclosure in the assembled state. Fig. 9 a detail of the Fig. 7 and Fig. 8 shown embodiment. Fig. 9 is made with reference to Fig. 7 and Fig. 8 described.

[0060] Fig. Figure 9 shows the second intake opening 119 and illustrates that the intake opening arrangement 117 and the legs 124 encompass the brake disc 215. The second intake opening 119 is directed toward the side of the brake disc 215 facing away from the vehicle.

[0061] The suction device 100 of the Fig. 7 to 9 is also with reference to Fig. 12 and Fig. 13 described.

[0062] Fig. 10 schematically shows a perspective view of a suction device 100 according to one aspect of the disclosure. The suction device 100 is the one shown in Fig. 2 to 6 described suction device 100. Fig. 10 is made with reference to Fig. 2 to 6.

[0063] The suction device 100 is formed in one piece, for example by casting. The suction device 100 consists, for example, of a metallic material and / or a plastic.

[0064] The suction device 100 has the base body 110 with the connection opening 112 and the fastening opening 114.

[0065] The connecting opening 112 is configured to be connected to the vacuum port 120. When the vacuum port 120 is subjected to a negative pressure p, a negative pressure p and thus an air flow can be created in the suction line 115, which in turn causes suction through the suction opening arrangement 117.

[0066] The intake opening arrangement 117 is aligned in the assembled state in relation to the direction of rotation R in the coaxial direction K and in the direction of rotation R, see Fig. 2 to 9. The orientation of the intake port arrangement 117 in the rotational direction R causes the intake port arrangement 117 to be directed toward the brake pads 216. The orientation of the intake port arrangement 117 in the coaxial direction K causes the intake port arrangement 117 to be directed toward the brake disc 215.

[0067] The suction line 115 has a first cross-section 121 between the first suction opening 118 and the connecting opening 112, and a second cross-section 122 between the second suction opening 119 and the connecting opening 112, as schematically depicted by ellipses with a dashed line. The first cross-section 121 is a minimum cross-section 121' between the first suction opening 118 and the connecting opening 112, and the second cross-section 122 is a minimum cross-section 122' between the second suction opening 119 and the connecting opening 112. The first cross-section 121 and the second cross-section 122 thus influence the flow resistance of the suction line 115 and thus the air flow between the connecting opening 112 and the suction opening arrangement 117.

[0068] The first cross section 121 is different from the second cross section 122. This makes it possible to achieve a uniform negative pressure p at the first suction opening 118 and the second suction opening 119 despite the different lengths of the connecting line 115 between the second suction opening 119 and the connecting opening 112 and the connecting line 115 between the first suction opening 118 and the connecting opening 112.

[0069] The fastening opening 114 is designed to receive the fastening element 113 in order to fasten the suction device 100 in particular to the carrier 230.

[0070] Fig. 11 schematically shows a perspective view of a suction device 100 according to one aspect of the disclosure. The suction device 100 according to Fig. 11 is the Fig. 10 shown suction device 100.

[0071] Fig. 12 schematically shows a perspective view of a suction device 100 according to one aspect of the disclosure. The suction device 100 is the one shown in Fig. Suction device 100 described in Figures 7 to 9. Fig. 12 is made with reference to Fig. 7 to 9 described.

[0072] For the suction device 100 according to Fig. 12 applies with reference to the suction device 100 according to Fig. 10 and Fig. 11 described.

[0073] Fig. 13 schematically shows a perspective view of a suction device 100 according to one aspect of the disclosure. The suction device 100 according to Fig. 13 is the Fig. 12 shown suction device 100. Reference symbol (part of the description) 100 suction device 110 base bodies 112 Connection opening 113 Fastening element 114 Mounting hole 115 Suction line 116 Branching 117 Intake opening arrangement 118 first intake opening 119 second intake opening 120 vacuum connection 121 first cross section 121' minimum cross-section 122 second cross section 122' minimum cross-section 123 second vacuum connection 124 Leg 200 commercial vehicles 210 Braking device 215 brake disc 216 brake pad 220 brake caliper 230 carriers 232 recess K coaxial direction p negative pressure R rotation axis QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] DE 10 2006 051 972 A1

[0003] DE 10 2009 021 203 A1

[0004] DE 10 2012 016 835 A1

[0004] WO 2019 / 141926 A1

[0005] DE 10 2021 126 026 A1

[0006] DE 10 2021 126 787 A1

[0007]

Claims

[1] Extraction device (100) for extracting brake dust particles for a pneumatic braking device (210) for a commercial vehicle (200), wherein the braking device (210) has a brake disc (215) rotatable in a direction of rotation (R), a brake calliper (220) and a carrier (230) carrying the brake calliper (220), wherein - the suction device (100) comprises a base body (110) with a suction line (115) arranged within the base body (110); - the base body (110) has a connecting opening (112) for connecting the base body (110) to a vacuum connection (120) for applying a negative pressure (p) to the suction line (115); - the base body (110) has a branch (116) and a suction opening arrangement (117), wherein - the suction opening arrangement (117) is fluidically connected to the connecting opening (112) via the suction line (115); - the intake opening arrangement (117) is designed to encompass the brake disc (215); and - the suction device (100) is designed to be arranged in the direction of rotation (R) between the brake calliper (220) and the carrier (230). [2] Suction device (100) according to claim 1, wherein the suction device (100) is adapted to be attached to the carrier (230). [3] Suction device (100) according to claim 1 or 2, wherein the suction opening arrangement (117) has two suction openings (118, 119). [4] Suction device (100) according to claim 3, wherein - the suction line (115) has a first cross-section (121) between a first suction opening (118) of the two suction openings (118, 119) and the connecting opening (112), - the suction line (115) has a second cross-section (122) between a second suction opening (119) of the two suction openings (118, 119) and the connecting opening (112), and - the first cross-section (121) is different from the second cross-section (122). [5] Suction device (100) according to claim 4, wherein the first cross section (121) is a minimum cross section (121') between the first suction opening (118) and the connecting opening (112) and / or the second cross section (122) is a minimum cross section (122') between the second suction opening (119) and the connecting opening (112). [6] Suction device (100) according to one of the preceding claims, wherein the suction device (100) is formed in one piece or in several pieces. [7] Suction device (100) according to one of the preceding claims, wherein the suction device (100) has a second vacuum connection (123), wherein the vacuum connection (120) is arranged on the action side in the mounted state and the second vacuum connection (123) is arranged on the reaction side in the mounted state. [8] Suction device (100) according to one of the preceding claims, wherein the suction opening arrangement (117) in the assembled state is aligned in the coaxial direction (K) and / or in the direction of rotation (R) with respect to the direction of rotation (R). [9] Braking device (210) for a commercial vehicle (200), wherein the braking device (210) comprises a brake disc (215) rotatable in a direction of rotation (R), a brake calliper (220), a support (230) carrying the brake calliper (220) and a suction device (100) according to one of the preceding claims. [10] Braking device (210) according to claim 9, wherein the carrier (230) has a recess (232), wherein the suction device (100) is arranged in the recess (232). [11] Braking device (210) according to claim 9 or 10, wherein the suction device (100) is attached to the carrier (230). [12] Commercial vehicle (200) comprising a suction device (100) according to one of the preceding claims 1 to 8 and / or a braking device (210) according to one of the preceding claims 9 to 11.

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