Suction device for sucking brake dust particles of pneumatic brake system of commercial vehicle, brake system, and commercial vehicle

Abstract

The invention relates to a suction device for sucking away brake dust particles of a pneumatic brake system of a commercial vehicle, a brake system, and a commercial vehicle, the brake system having a brake disc rotatable in a rotational direction, a brake caliper, and a carrier carrying the brake caliper, the suction device comprising a base body having a suction line arranged therein; the base body is provided with a connecting opening, and the connecting opening is used for connecting the base body with a negative pressure interface used for loading negative pressure to the suction line; the base body has a branch and a suction opening arrangement, the suction opening arrangement being fluidically connected to the connection opening via a suction line; the suction opening arrangement is configured to enclose the brake disc; the suction device is arranged between the brake caliper and the carrier in the rotational direction.

Description

Technical Field

[0001] The disclosure relates to a suction device for suctioning brake dust particles from a pneumatic brake system of a commercial vehicle, wherein the brake system has a brake disc rotatable in the direction of rotation, a brake caliper and a carrier carrying the brake caliper. The disclosure also relates to a brake system for a commercial vehicle, wherein the brake system has a brake disc rotatable in the direction of rotation, a brake caliper, a carrier carrying the brake caliper and the suction device, and a commercial vehicle comprising the suction device and / or the brake system. Background Art

[0002] Disc brakes of the type mentioned above are known and are used in commercial vehicles as friction brakes to slow down the movement of commercial vehicles. Friction brakes work according to the friction principle. Here, a brake lining carried by a brake caliper is placed in friction with a brake disc in order to produce a braking effect on the vehicle. Due to the friction between the brake lining and the brake disc, wear particles, i.e. brake dust, are produced on the friction material of the brake lining and on the brake disc. Brake dust particles are dust particles of a magnitude of, for example, less than 10 µm, so-called fine dust, which are classified as harmful to health and polluting the environment due to their small particle size and their chemical composition. Therefore, the release of fine dust into the surrounding environment is undesirable. Therefore, it is a general concern to prevent the discharge of fine dust produced during the braking process into the surrounding environment as much as possible when designing disc brakes.

[0003] Document DE 10 2006 051 972 A1 discloses a disc brake for a motor vehicle having a brake dust collection device. The brake dust collection device is constructed as a housing, which is directly connected to the area of ​​the brake caliper overlapping the brake disc in the rotational direction of the brake disc and overlaps with another limited area of ​​the brake disc. The housing has a plurality of air inlet openings and an air outlet opening separated from the air inlet openings. In addition, the housing has a brake dust retention device with an additional brake dust inlet opening. The physical separation of the air inlet opening and the brake dust inlet opening should make it possible to divert the brake dust that occurs into the brake dust retention device. The air flowing in through the air inlet opening should also be used to cool the brake disc.

[0004] Further friction brake designs with a brake dust collecting device which extends over a limited angular section of the brake disk and is located downstream of the brake caliper of the friction brake are disclosed, for example, in the documents DE 10 2009 021203 A1 and DE 10 2012 016 835 A1.

[0005] WO 2019 / 141926 A1 discloses a brake lining. The brake lining includes a lining made of a friction material and a plate carrying the lining. The lining includes: a rear edge and a front edge, the rear edge is located on the side where the disc can come out of the intersection area with the lining when the disc rotates in the driving direction of the vehicle; a collecting groove, the collecting groove leads to the friction surface and is located near the rear edge. The lining has a rear area, the rear area includes the rear edge and the collecting groove, and has a front area, the front area includes the front edge, wherein the front area has a chamfered section, so that the area of ​​the friction surface of the front area increases as the thickness of the front area decreases.

[0006] DE 10 2021 126 026 A1 discloses a disc brake, which has a brake caliper overlapping with a brake disc, in which brake linings each provided with a friction lining and a back plate are arranged, and the brake linings can be pressed against the friction annular surfaces on both sides of the brake disc by means of their friction linings, respectively, and the disc brake also has a suction tube assembly for sucking away abrasive particles occurring during the braking process, wherein the suction tube assembly includes one or more suction tubes directly arranged at the two brake linings.

[0007] DE 10 2021 126 787 A1 discloses a disc brake, which has a brake caliper overlapping with a brake disc, in which brake linings each provided with a friction lining and a back plate are arranged, and the brake linings can be pressed against friction annular surfaces on both sides of the brake disc by means of their friction linings, respectively. The disc brake also has a suction removal component for sucking away abrasive particles occurring during the braking process, and is characterized in that the suction removal component has two suction tube components associated with respective brake linings, and a covering portion connected to the suction tube components for at least partially covering the brake disc in any case. Summary of the invention

[0008] The object of the present disclosure is to enrich the prior art and at least partially improve the above aspects. In particular, the present disclosure solves the object of enabling effective suction of brake dust and for this purpose describes a suction device that can be efficiently manufactured and saves construction space.

[0009] This object is achieved by the subject matter of claim 1 and by the subject matter of the further independent claims. The dependent claims describe developments of the disclosure.

[0010] According to one aspect of the present disclosure, a suction device for sucking away brake dust particles of a pneumatic brake device of a commercial vehicle is provided, wherein the brake device has a brake disc, a brake caliper and a carrier that supports the brake caliper and can rotate in a rotational direction, wherein the suction device includes a base body, the base body has a suction line arranged inside the base body; the base body has a connecting opening, the connecting opening is used to connect the base body to a negative pressure interface for applying negative pressure to the suction line; the base body has a branch part and a suction opening facility, wherein the suction opening facility is fluidically connected to the connecting opening via the suction line; the suction opening facility is configured to enclose the brake disc; and the suction device is configured to be arranged between the brake caliper and the carrier in the rotational direction.

[0011] It has been recognized here that arranging the suction device for suctioning between the carrier and the brake caliper is suitable for effectively suctioning away brake particles, because brake dust typically accumulates on a brake lining arranged on the brake caliper or on a disc brake that is operatively connected to the brake lining, and brake dust can therefore be suctioned away directly behind the brake particles accumulated on the brake lining in the direction of rotation.

[0012] The suction opening facility is designed to suck air, which may contain brake particles, from the brake lining and / or brake disc. To this end, the suction opening facility enables suction on both sides of the brake disc and / or around the brake disc, i.e., on the lateral side and on the opposite sides of the brake disc. Thus, suction can be directly taken away at the friction points or where brake particles or friction particles occur.

[0013] The suction device has a base body. The base body has a suction line so that air, possibly with brake particles, can be conducted from the suction opening facility to the connecting opening. The base body can be placed in operative connection with a negative pressure interface at the connecting opening in order to suction off air and possible brake particles.

[0014] The suction opening facility is designed to enclose the brake disc. In other words, the suction opening facility is arranged by enclosing the brake disc so that the suction opening facility is in operative connection with the circumferential side of the brake disc and the two sides of the brake disc facing the brake lining, so that the brake particles can be sucked away there.

[0015] The arrangement of the suction device between the brake caliper and the carrier makes it possible to arrange the suction device in a space-saving manner and to arrange the suction opening facility directly on the section of the brake device where the brake particles accumulate. In addition, this arrangement of the suction device also makes it possible to integrate the suction device into the carrier geometry, which can help to further save structural space. The suction device is therefore a device that is different from the carrier and the brake caliper. The arrangement of the suction device between the brake caliper and the carrier in the rotational direction means that when the vehicle is moving forward, the suction device is at least partially and with respect to the rotational direction of the brake disc behind the brake caliper and / or in front of the carrier.

[0016] Optionally, the suction device is designed to be fastened to a carrier. It has been recognized that, for example, in the case of a floating caliper (i.e. a coaxially movable brake caliper), the fastening to the carrier allows the brake caliper to be moved without affecting the suction device and / or its pneumatic lines. Alternatively, for example, in the case of a fixed brake caliper (i.e. a locally fixedly arranged brake caliper), the suction device can also be fastened to the brake caliper.

[0017] Optionally, the suction opening arrangement has two suction openings. It is thus possible to provide a suction opening for each brake lining or for each friction surface of the brake disc, wherein each suction opening is designed to suck away brake particles at one of the brake linings and / or at one of the friction surfaces. In this way, brake particles can be sucked away effectively and in a targeted manner.

[0018] Optionally, the suction line has a first cross section between a first of the two suction openings and the connecting opening, the suction line has a second cross section between a second of the two suction openings and the connecting opening, and the first cross section is different from the second cross section. It has been recognized that the cross section influences the flow resistance and thus the volume flow and / or mass flow of the air flowing through the suction line. Different cross sections can ensure that the brake particles are equally sucked away between the two sides of the brake disk.

[0019] Optionally, the first cross section is the smallest cross section between the first suction opening and the connecting opening, and / or the second cross section is the smallest cross section between the second suction opening and the connecting opening. It has been recognized that the respective smallest cross section between the first suction opening and the connecting opening and / or between the second suction opening and the connecting opening plays a decisive role in the flow resistance and thus in the suction performance.

[0020] Optionally, the suction device is constructed in one piece or in multiple pieces. In particular, the use of a one-piece suction device makes it possible to efficiently assemble the suction device. Here, the suction device can be made of metal and / or of a high-temperature-resistant plastic in order to meet thermal, mechanical and chemical requirements. Alternatively, the suction device can be constructed as a sheet and / or in two pieces or in multiple pieces. The suction device can be made of two or more separate sheet parts, for example, an upper shell and a lower shell, which are then welded together to form the suction device.

[0021] Optionally, the suction device has a second vacuum connection, wherein the vacuum connection is arranged on the action side in the assembled state and the second vacuum connection is arranged on the reaction side in the assembled state. The suction opening arrangement can thus be charged with vacuum evenly or uniformly, so that even suction of air and possible brake particles can be achieved.

[0022] Optionally, the suction opening facility is oriented in the coaxial direction and / or in the rotational direction in the assembled state with respect to the rotational direction. It has been recognized that the effective cross-section of the suction opening facility can be matched and / or enlarged thereby. Therefore, by orienting the suction opening facility in the coaxial direction, the suction opening facility can be aligned with the brake disc, and the orientation of the suction opening facility in the rotational direction can achieve the orientation of the suction opening facility in the circumferential direction of the brake disc, and due to the rotation of the brake disc, the air and brake particles will move along this circumferential direction. By orienting the suction opening facility in the rotational direction, the suction opening facility arranged behind the brake caliper in the rotational direction can be directed to the brake lining, and thus the brake particles accumulated at the brake lining can be directly sucked away.

[0023] According to one aspect of the present disclosure, a brake device for a commercial vehicle is provided, wherein the brake device has a brake disc rotatable in a rotational direction, a brake caliper, a carrier carrying the brake caliper, and the above-mentioned suction device. The suction device can have one or more of the above-mentioned optional and / or advantageous features to achieve the technical effects related thereto.

[0024] Optionally, the carrier has a recess, wherein the suction removal device is arranged in the recess. Thus, the suction removal device can be effectively integrated into the geometry of the carrier.

[0025] Optionally, the suction device is fastened to the carrier. For example, the suction device can be fastened to the carrier using a fastening device so that the suction device can be effectively assembled and fastened to the carrier.

[0026] According to one aspect of the present disclosure, a commercial vehicle is provided, which includes the above suction device and / or the above braking device. The suction device and / or the braking device may have one or more of the above optional and / or advantageous features in order to achieve the technical effects associated therewith. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Other features and technical effects of the present disclosure are derived from the accompanying drawings and the description of the embodiments shown in the accompanying drawings.

[0028] Figure 1 A schematic diagram showing a commercial vehicle according to one aspect of the present disclosure;

[0029] Figure 2 A perspective view schematically illustrating a brake device according to one aspect of the present disclosure;

[0030] Figure 3 A perspective view schematically shows a suction removal device according to one aspect of the present disclosure in an assembled state;

[0031] Figure 4 A perspective view schematically shows a suction removal device according to one aspect of the present disclosure in an assembled state;

[0032] Figure 5 schematically shows a perspective view of a carrier and a suction removal device according to one aspect of the present disclosure in an assembled state;

[0033] Figure 6 schematically shows a perspective view of a carrier and a suction removal device according to one aspect of the present disclosure in an assembled state;

[0034] Figure 7 schematically shows a perspective view of a carrier and a suction removal device according to one aspect of the present disclosure in an assembled state;

[0035] Figure 8 schematically shows a perspective view of a carrier and a suction removal device according to one aspect of the present disclosure in an assembled state;

[0036] Fig. 9 schematically shows a perspective view of a carrier and a suction removal device according to one aspect of the present disclosure in an assembled state;

[0037] Fig.10 schematically showing a perspective view of a suction device according to one aspect of the present disclosure;

[0038] Fig.11 schematically showing a perspective view of a suction device according to one aspect of the present disclosure;

[0039] Fig.12a perspective view schematically illustrating a suction device according to one aspect of the present disclosure; and

[0040] Fig.13 A perspective view schematically illustrates a suction device according to one aspect of the present disclosure. DETAILED DESCRIPTION

[0041] Figure 1 A schematic diagram of a commercial vehicle 200 according to one aspect of the present disclosure is shown. The commercial vehicle 200 is a land vehicle, such as a tractor vehicle and / or a trailer vehicle of a multi-section vehicle, a single section vehicle and / or a bus.

[0042] The illustration of the commercial vehicle 200 is limited to the components essential to the present disclosure, wherein it should be understood at this time that in addition to the components depicted, the commercial vehicle 200 also includes further components necessary for the operation of the commercial vehicle 200, such as a drive train, a chassis and / or a body. For the purpose of explaining the present disclosure, the illustration of these components is omitted.

[0043] The commercial vehicle 200 has a brake system 210 for decelerating the movement of the commercial vehicle 200. The commercial vehicle 200 optionally has a pneumatic system (not shown) which is configured to load the optionally pneumatic and / or electropneumatic brake system 210 with compressed air and / or to provide a negative pressure P for sucking away brake particles.

[0044] The brake device 210 has a brake disk 215 rotatable in a rotational direction R, a brake caliper 220, a carrier 230 carrying the brake caliper 220, and a suction device 100. The brake disk 215 is designed to rotate about an axis (not shown) defining the rotational direction R. A direction parallel to the axis is a coaxial direction K, which, as indicated by the cross, extends into the plane of the drawing and is therefore arranged perpendicular to the rotational direction R.

[0045] The brake system 210 has two brake linings 216 as friction pairs that can be placed in operative connection with a brake disk 215 (see Figures 2 to 9 ). The brake caliper 220 partially surrounds the brake disc 215 and is configured to clamp the brake lining 216 onto the brake disc 215 to achieve a braking effect. Here, brake particles or brake dust may accumulate on the respective friction surfaces between the brake disc 215 and the brake lining 216.

[0046] The suction device 100 is designed to be arranged between the brake caliper 220 and the carrier 230 in the rotational direction R. The suction device 100 has a base body 110 (see Figures 2 to 13 ), the base body has a suction line 115 arranged in the base body 110. The base body 110 has a connecting opening 112 (see Fig.10and Fig.12 ), the connecting opening is used to connect the base body 110 with a negative pressure interface 120 for applying negative pressure p to the suction line 115. For this purpose, a pneumatic system (not shown) can be connected to the negative pressure interface 120.

[0047] The suction device 100 has a suction opening facility 117. The suction opening facility 117 is fluidically connected to the connecting opening 112 via the suction line 115. Thus, by charging the suction line 115 via the negative pressure connection 120 and the connecting opening 112, a negative pressure p can be generated in the suction line 115, on the basis of which an air flow that may contain brake particles is sucked through the suction opening facility 117. The air flow that may contain brake particles is then transported through the suction line 115 and can be fed to a reservoir and / or a filter (not shown) in order to remove the brake particles from the air flow.

[0048] The braking device 210 and in particular the suction device 100 are referred to Figures 2 to 9 Further description. See also Figures 10 to 13 The suction device 100 is described.

[0049] like Figure 1 The suction device 100 is only schematically shown in the figure, and has a second negative pressure interface 123, wherein the negative pressure interface 120 is arranged on the action side in the assembled state, and the second negative pressure interface 123 is arranged on the reaction side in the assembled state. In other words, one of the negative pressure interfaces 120 and 123 is arranged on the vehicle side, and the other of the negative pressure interfaces 120 and 123 is arranged facing away from the vehicle side. Figures 2 to 13 In the embodiment shown in FIG. 1 , the suction device 100 has only the negative pressure interface 120 ; the second negative pressure interface 123 may be unnecessary.

[0050] Figure 2 A perspective view of a brake device 210 according to one aspect of the present disclosure is schematically shown. The brake device 210 is a Figure 1 Braking system 210 is described. Figure 2 Reference Figure 1 to describe.

[0051] according to Figure 2 The brake caliper 220 is a floating caliper and is therefore supported so as to be movable relative to the carrier 230. The suction device 100 is fastened to the carrier 230. For this purpose, the brake device 210 has a fastening means 113 configured as a screw, which is fastened through a fastening opening 114 (see Fig.10 and Fig.12 ) extends into the carrier 230 in order to fasten the suction device 100 to the carrier 230.

[0052] The suction device 100 has a base body 110 with a suction line 115 arranged within the base body 110 (see Figure 1 ). Figure 2 Also shown is a vacuum connection 120 which is connected to the connection opening 112 and is used to apply a vacuum p to the suction line 115 .

[0053] The base body 110 has a suction opening facility 117 (see Figures 5 to 13 The suction opening facility 117 is fluidically connected to the connecting opening 112 and thus to the negative pressure interface 120 via the suction line 115 .

[0054] The suction opening facility 117 is designed to enclose the brake disk 215. For this purpose, the base body 110 has a branch 116. The base body 110 also encloses the brake disk 215. Therefore, the base body 110 is arranged in an operative connection with the circumferential side of the brake disk 215 and the two sides of the brake disk 215 facing the brake lining 216, so that the brake particles can be sucked away there. In this case, the suction opening facility 117 points to the brake disk 215 and / or the brake lining 216 (see Figures 5 to 13 ).

[0055] The suction device 100 is configured to be arranged between the brake caliper 220 and the carrier 230 in the rotational direction R. Therefore, the suction device 100 is arranged behind the brake caliper 220 and behind the brake lining 216 as seen in the rotational direction R. Therefore, brake particles detached from the brake disc 215 and / or the brake lining 216 move in the rotational direction R along with the air flow flowing in the rotational direction R and can be effectively sucked away by the suction device 100.

[0056] Figure 3 Schematically shows a perspective view of a suction device 100 in an assembled state according to one aspect of the present disclosure. Figure 3 Shows Figure 2 Detail of the embodiment shown in , wherein the brake disk 215 is hidden. Figure 3 Reference Figure 1 and Figure 2 Give a description.

[0057] The carrier 230 has a recess 232. The recess 232 provides a structural space for arranging the suction device 100. The suction device 100 is arranged in the recess 232 or the recess. The suction device 100 and the recess 232 or the carrier 230 are set up to make the structural space occupied by the suction device 100 in the radial direction equal and / or smaller than that of the carrier 230 and / or the brake caliper 220.

[0058] Figure 4Schematically shows a perspective view of a suction device 100 in an assembled state according to one aspect of the present disclosure. Figure 4 Shows Figure 2 and Figure 3 Detail of the embodiment shown in , wherein the brake disk 215 is hidden. Figure 4 Reference Figures 1 to 3 Give a description.

[0059] In the coaxial direction K, the suction device 100 occupies the same and / or less installation space than the carrier 230 and / or the brake caliper 220 . The suction device 100 can therefore be arranged between the carrier 230 and the brake caliper 220 in a space-saving and installation-space-efficient manner.

[0060] Figure 5 Schematically shown is a perspective view of a carrier 230 and a suction removal device 100 in an assembled state according to one aspect of the present disclosure. Figure 5 Shows Figures 2 to 4 Detail of the embodiment shown in , in which the brake disc 215 is faded and the brake caliper 220 is hidden. Figure 5 Reference Figures 1 to 4 Give a description.

[0061] The base body 110 or the suction opening arrangement 117 has two suction openings 118, 119, namely a first suction opening 118 and a second suction opening 119, wherein, due to the viewing angle, the suction openings 118 and 119 are located at the bottom of the base body 110 and the suction opening arrangement 117. Figure 5 Only the second suction opening 119 can be seen.

[0062] Here, through Figure 5 Combination Figure 6 It can be seen that the suction opening arrangement 117 surrounds the brake disk 215 .

[0063] Figure 6 Schematically shows a perspective view of a carrier 230 and a suction device 100 in an assembled state according to one aspect of the present disclosure. Figure 6 Shows Figure 5 Details of the implementation shown in . Figure 6 Reference Figure 5 Give a description.

[0064] Figure 6 The first suction opening 118 is shown and the suction opening arrangement 117 is shown enclosing the brake disk 215. The first suction opening 118 is directed toward the vehicle-side side of the brake disk 215, while the second suction opening 119 is directed toward the side of the brake disk 215 facing away from the vehicle.

[0065] The side of the suction device 100 facing the brake caliper 220 is flat, i.e. planar, and thus conforms to the geometry of the carrier 230. Thus, the suction device 100 can be retrofitted, in particular without modifying the brake caliper 220, by providing the carrier 230 and the suction device 100 with the cutout 232.

[0066] also, Figures 2 to 6 The suction device 100 also refers to Fig.10 and Fig.11 Give a description.

[0067] Figure 7 Schematically shows a perspective view of a carrier 230 and a suction device 100 in an assembled state according to one aspect of the present disclosure. Figure 7 The suction device 100 is based on Figures 2 to 6 An alternative embodiment of the suction device 100 is shown. Figure 7 In the figure, the brake disc 215 and the brake caliper 220 are hidden. Figure 7 Reference Figures 1 to 6 Describe, wherein described with according to Figures 2 to 6 The differences in the embodiments of the suction device 100 are shown.

[0068] The base body 110 has two legs 124 upstream of the branch 116. One of the two suction openings 118, 119 is arranged on each leg 124. One of the legs 124 is arranged on the vehicle side of the brake disk 215, while the other leg 124 is arranged on the side of the brake disk 215 facing away from the vehicle. The legs 124 extend from the branch 116 in the direction of the brake lining 216 in the opposite direction of the rotation direction R. The recess 232 is designed to partially enclose the legs 124.

[0069] Here, through Figure 7 Combination Figure 8 and Fig. 9 The enclosure of the brake disk 215 by the suction opening arrangement 117 and the legs 124 can be seen.

[0070] Figure 8 Schematically shown is a perspective view of a carrier 230 and a suction removal device 100 in an assembled state according to one aspect of the present disclosure. Figure 8 Shows Figure 7 Details of the implementation shown in . Figure 8 Reference Figure 7 Give a description.

[0071] Figure 8The first suction opening 118 is shown and the suction opening arrangement 117 and the legs 124 are shown enclosing the brake disk 215 . In this case, the first suction opening 118 points toward one side of the brake disk 215 on the vehicle side.

[0072] Fig. 9 Schematically shown is a perspective view of a carrier 230 and a suction removal device 100 in an assembled state according to one aspect of the present disclosure. Fig. 9 Shows Figure 7 and Figure 8 Details of the implementation shown in . Fig. 9 Reference Figure 7 and Figure 8 Give a description.

[0073] Fig. 9 The second suction opening 119 is shown and it is explained that the suction opening arrangement 117 and the legs 124 surround the brake disk 215. In this case, the second suction opening 119 points toward the side of the brake disk 215 facing away from the vehicle.

[0074] also, Figures 7 to 9 The suction device 100 also refers to Fig.12 and Fig.13 Give a description.

[0075] Fig.10 A perspective view of a suction device 100 according to one aspect of the present disclosure is schematically shown. The suction device 100 is Figures 2 to 6 The suction device 100 described in . Fig.10 Reference Figures 2 to 6 Described.

[0076] The suction device 100 is formed in one piece, for example by casting. The suction device 100 is formed, for example, from a metallic material and / or a plastic.

[0077] The suction device 100 has a main body 110 with a connecting opening 112 and a fastening opening 114 .

[0078] The connecting opening 112 is designed to be connected to the vacuum connection 120 . Therefore, when a vacuum p is applied to the vacuum connection 120 , a vacuum p and thus an air flow can be generated in the suction line 115 , which in turn causes suction through the suction opening facility 117 .

[0079] In the mounted state, the suction opening device 117 is oriented in a coaxial direction K with respect to the rotational direction R and in the rotational direction R, see Figures 2 to 9The orientation of the suction opening facility 117 in the rotational direction R has the effect that the suction opening facility 117 can be directed toward the brake lining 216 . The orientation of the suction opening facility 117 in the coaxial direction K has the effect that the suction opening facility 117 can be directed toward the brake disk 215 .

[0080] 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 indicated by an ellipse with a dashed line. Here, the first cross section 121 is the smallest cross section 121 'between the first suction opening 118 and the connecting opening 112, and the second cross section 122 is the smallest cross section 122 'between the second suction opening 119 and the connecting opening 112. Thus, the first cross section 121 and the second cross section 122 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.

[0081] The first cross-section 121 is different from the second cross-section 122. Therefore, although the length of the connecting line 115 between the second suction opening 119 and the connecting opening 112 is different from the length of the connecting line 115 between the first suction opening 118 and the connecting opening 112, an equal negative pressure p can still be achieved at the first suction opening 118 and the second suction opening 119.

[0082] The fastening opening 114 is provided for receiving a fastening element 113 in order to fasten the suction removal device 100 , in particular to a carrier 230 .

[0083] Fig.11 Schematically shows a perspective view of a suction device 100 according to one aspect of the present disclosure. Fig.11 The suction device 100 is Fig.10 The suction removal device 100 shown in FIG.

[0084] Fig.12 A perspective view of a suction device 100 according to one aspect of the present disclosure is schematically shown. The suction device 100 is Figures 7 to 9 The suction device described in . Fig.12 Reference Figures 7 to 9 Described.

[0085] Reference Fig.10 and Fig.11 The description of the suction device 100 is applicable to the Fig.12 The suction device 100 is provided.

[0086] Fig.13 Schematically shows a perspective view of a suction device 100 according to one aspect of the present disclosure. Fig.13 The suction device 100 is Fig.12 The suction removal device 100 shown in FIG.

[0087] List of reference numerals (part of the description)

[0088] 100 suction equipment

[0089] 110 base

[0090] 112 connection opening

[0091] 113 Fastening elements

[0092] 114 Fastening opening

[0093] 115 suction line

[0094] 116 Branch

[0095] 117 Suction opening facilities

[0096] 118 first suction opening

[0097] 119 Second suction opening

[0098] 120 negative pressure interface

[0099] 121 First cross section

[0100] 121' minimum cross section

[0101] 122 Second cross section

[0102] 122' minimum cross section

[0103] 123 Second negative pressure interface

[0104] 124 legs

[0105] 200 Commercial Vehicles

[0106] 210 Braking equipment

[0107] 215 brake disc

[0108] 216 brake lining

[0109] 220 brake caliper

[0110] 230 carrier

[0111] 232 blank space

[0112] K coaxial direction

[0113] pNegative pressure

[0114] RRotation direction

Claims

1. A suction device (100) for suctioning away brake dust particles from a pneumatic brake system (210) of 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 carrier (230) carrying the brake caliper (220), wherein: The suction device (100) comprises a base body (110) having a suction line (115) arranged inside the base body (110); - the base body (110) has a connecting opening (112) for connecting the base body (110) to a negative pressure interface (120) for applying negative pressure (p) to the suction line (115); The base body (110) has a branch (116) and a suction opening facility (117), wherein: - the suction opening facility (117) is fluidically connected to the connecting opening (112) via the suction line (115); - the suction opening arrangement (117) is configured to enclose the brake disc (215); and The suction device (100) is designed to be arranged between the brake caliper (220) and the carrier (230) in the direction of rotation (R).

2. The suction device (100) according to claim 1, wherein: The suction removal device (100) is designed to be fastened to the carrier (230).

3. The suction device (100) according to claim 1 or 2, wherein: The suction opening facility (117) has two suction openings (118, 119).

4. The 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 the 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. The 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. The suction device (100) according to any one of the preceding claims, wherein: The suction removal device (100) is designed in one piece or in multiple pieces.

7. The suction device (100) according to any one of the preceding claims, wherein The suction removal device (100) has a second vacuum interface (123), wherein the vacuum interface (120) is arranged on the active side in the assembled state, and the second vacuum interface (123) is arranged on the reactive side in the assembled state.

8. The suction device (100) according to any one of the preceding claims, wherein In the assembled state, the suction opening arrangement (117) is oriented in a coaxial direction (K) with respect to the rotational direction (R) and / or in the rotational direction (R).

9. A brake system (210) for a commercial vehicle (200), wherein: The brake system (210) has a brake disk (215) rotatable in a rotational direction (R), a brake caliper (220), a carrier (230) carrying the brake caliper (220), and a suction device (100) according to any of the preceding claims.

10. The brake device (210) according to claim 9, wherein: The carrier (230) has a recess (232), wherein the suction removal device (100) is arranged in the recess (232).

11. The brake device (210) according to claim 9 or 10, wherein: The suction device (100) is fastened to the carrier (230).

12. A commercial vehicle (200) comprising a suction device (100) according to any one of the preceding claims 1 to 8 and / or a brake system (210) according to any one of the preceding claims 9 to 11.

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