Disc brake device and brake pad

Abstract

The invention proposes, inter alia, a disc brake device (4) for a vehicle (1), having an internally ventilated or solid brake disc (5), wherein the internally ventilated brake disc has ventilation openings (10) in the region of a brake disc pot (6) radially inside on the vehicle side, which are in flow-technical communication with cooling channels (11) inside the brake disc (5), and wherein the solid brake disc does not have such ventilation openings (10) with cooling channels (11), having a brake caliper (7) bridging the brake disc (5) with brake linings (8, 9) arranged on both sides of the brake disc (5), wherein the disc brake device (4) is equipped with a brake dust filter housing (14) which radially surrounds the brake disc (5) externally and is arranged behind the brake caliper (7) together with the brake linings (8, 9) in the main direction of rotation (15) of the brake disc (5). The invention proposes that the disc brake device (4) has at least one means for forced guiding of brake dust (13). Furthermore, a brake lining (8, 9) for a disc brake device (4) is proposed, wherein the brake lining has a means for forced guiding of brake dust.

Description

Technical Field

[0001] The present invention relates to a disc brake device for a vehicle, a vehicle having such a disc brake device, and brake pads for such a disc brake device, which respectively reduce the environmental burden caused by brake dust. Background Technology

[0002] During braking, brake dust generated by wear on the brake pads, especially in disc brakes, poses a burden on the environment. Therefore, it is desirable to reduce the environmental impact of brake dust emissions.

[0003] Patent document DE 3934422A1 discloses a disc brake for automobile wheels, which has a container mounted thereon for collecting the generated wear material, also known as brake dust. This container is large enough to hold the wear material generated by the brake pads during their service life. The container consists of a housing surrounding a portion of the brake disc and a filter disposed between the housing and the brake disc. The filter includes means for directing airflow carrying brake wear material into the filter.

[0004] Patent document EP 2102522 B1 describes a brake dust collection device for a disc brake, wherein the disc brake has a brake disc and a brake caliper bridging the latter. The brake dust collection device has a housing designed to bridging a section of the brake disc and directly connected to the brake caliper when viewed from the main rotation direction of the brake disc.

[0005] Patent document US2018 / 0031059A1 discloses a braking device having a cover in an area not covered by the brake caliper and brake pads in the circumferential direction, i.e., the cover is located only in front of and behind the brake caliper in the direction of rotation.

[0006] Patent document DE 10336984A1 shows a housing for a brake caliper with a brush sealing device, but without a guide for guiding the flow of brake wear.

[0007] Patent document DE 102019133722 A1 discloses a flushing air supply and exhaust system for discharging brake dust and other dust near brake pads.

[0008] In practice, these solutions have been found to be insufficient in preventing brake dust from being released into the environment. This invention aims to address the aforementioned problems. Summary of the Invention

[0009] According to the independent claim, the present invention relates to a disc brake device for a vehicle, a vehicle equipped with a disc brake device, and a brake pad, particularly for use in disc brake devices. Further design options are embodied in the dependent claims.

[0010] Starting with a disc brake system for vehicles, the disc brake system has an internally ventilated or solid brake disc. The internally ventilated brake disc has a vent in the region of the brake disc reservoir radially inward on the vehicle side. This vent is in fluid-technical communication with cooling channels inside the brake disc. The solid brake disc does not have such a vent with cooling channels. The disc brake system has a brake caliper bridging the brake disc and having brake pads arranged on both sides of the brake disc. The disc brake system is equipped with a brake dust filter housing radially surrounding the brake disc. Viewed along the main rotation direction of the brake disc, the brake dust filter housing is arranged behind the brake caliper together with the brake pads. The aforementioned technical problem is thus solved, namely, the disc brake system has at least one device for forcibly guiding brake dust. The brake disc also has two mutually opposing axially oriented friction surfaces.

[0011] Therefore, measures to prevent brake dust from being released into the environment are not limited to the conventional brake dust filter housing corresponding to the disc brake device, but include at least one device for forcibly guiding brake dust into, for example, the brake dust filter housing, to prevent, or at least effectively further minimize, the release of brake dust into the environment, wherein the device for forcibly guiding is constituted by the disc brake device itself according to the invention.

[0012] According to one embodiment of the present invention, a disc brake device for a vehicle is provided, the disc brake device having a brake disc having an axially oriented first friction surface and an axially oriented second friction surface opposite to the first friction surface, the disc brake device having a brake caliper bridging the brake disc, the brake caliper having a first brake pad corresponding to the first friction surface and a second brake pad corresponding to the second friction surface, wherein the disc brake device has a brake dust filter housing with a receiving port that radially surrounds the brake disc, the brake dust filter housing being arranged behind the brake caliper when viewed along the main rotation direction of the brake disc, wherein the disc brake device has a device for forcibly guiding brake dust, wherein the device for forcibly guiding brake dust extends radially inward from at least one of the first and second brake pads, in a direction passing over the inner edge of the corresponding friction surface of the brake disc, and brake dust radially discharged inward between at least one of the first and second brake pads and the brake disc is guided along at least one sub-flow path of brake dust along the friction surface corresponding to one of the first and second brake pads to the receiving port of the brake dust filter housing.

[0013] Brake dust, worn away from the brake pads by friction on the brake disc's friction surface, can thus be guided along a defined flow path, specifically directed from its generation point along a defined and at least partially guided flow path to a filter where the worn-away brake dust can be separated. By guiding the brake dust, the brake dust filter can be constructed more compactly. The entire disc brake system can be constructed more compactly because brake dust no longer needs to be extracted distributed across the entire brake disc, but is instead guided directly from its generation point to the brake dust filter housing within the brake dust filter. Here, flow paths already existing in and on the disc brake system, such as cooling air flow paths, can be used for transport.

[0014] According to one embodiment of the invention, the device for forcibly guiding braking dust extends radially inward from at least one of the first and second brake pads, past the corresponding friction surface of the brake disc, to the inner edge of the friction surface.

[0015] Brake dust can thus be guided inward along the surface of the brake disc and prevented from being uncontrolled to spread between the brake pads and the internal structure and into the environment. Furthermore, brake dust can be directed onto any existing structures to guide it to a brake dust filter.

[0016] According to one embodiment of the present invention, the brake disc is an internally ventilated brake disc, wherein the brake disc has a vent radially inward in a region of the brake disc reservoir on the vehicle side, the vent being in flow-technically connected to a cooling channel inside the brake disc, wherein a device for forced guidance has a guide plate extending radially between a first brake pad and the vent along a first friction surface of the brake disc on which the vent is provided, and extending axially spaced from the first friction surface of the brake disc into the region of the vent, so as to form a defined flow path for brake dust from the first brake pad through the guide plate, the flow path passing through the vent and cooling channel of the brake disc to the receiving port of the brake dust filter housing.

[0017] Brake dust can thus be guided to internal channels in the internally ventilated brake disc, which serve not only as cooling channels but also as channels for guiding brake dust. In this context, "plate" is understood as a structure that guides brake dust, particularly to the inlet of one or more cooling channels. The guide plate does not necessarily have to be made of metal. Even at higher expected temperatures, for example, heat-stable plastics can be used to manufacture the corresponding molded parts.

[0018] According to one embodiment of the invention, the guide plate ends in the area of ​​the vent, thereby ensuring airflow into the vent from the outside, in addition to guiding braking dust into or to the vent.

[0019] This allows for an airflow through the channels of the internally ventilated brake disc during operation of the disc brake system, which guides brake dust to the brake dust filter. For this purpose, brake dust is guided from the brake pads into an area dominated by the cooling airflow, causing the brake dust transported by the guide plates to be entrained by the cooling airflow. It is then directionally conveyed to the brake dust filter after exiting the cooling channels.

[0020] According to one embodiment of the invention, the guide plate has a steering edge that curves toward the brake disc in the vent region, the steering edge being guided around the inner edge of the friction surface.

[0021] Brake dust can thus be guided around the edge of the brake disc until it reaches the vicinity of the cooling channel inlet. It should be understood that an additional guiding structure can also be provided at the cooling channel outlet if there is no direct connection to the brake dust filter there. When positioning the receiving structure for the cooling air containing brake dust at the cooling channel outlet, it can be considered that the brake disc rotates during operation, and the receiving structure, such as even the inlet of the brake dust filter, is offset backward in the direction of rotation to account for the brake disc continuing to rotate during the airflow containing brake dust.

[0022] According to one embodiment of the invention, the guide plate is designed at least partially on its inner periphery to follow the direction of the brake disc canister, wherein the guide plate has particularly arc-shaped edges on its inner periphery.

[0023] The distance between the guide plate and the brake disc can thus be kept substantially constant to ensure a uniform flow cross-section. Brake dust can therefore be guided simultaneously to multiple cooling channel openings, from which it can then be supplied downstream to a brake dust filter.

[0024] According to one embodiment of the present invention, the guide plate, together with the brake caliper, brake disc and the components surrounding the brake dust filter housing, constitutes a brake dust guiding and ventilation system that is as enclosed as possible.

[0025] This ensures that no brake dust reaches the environment. Guide plates can also be positioned on other sides of the brake pads to allow brake dust discharged from those areas to be discharged. For this purpose, the edges of the guide plates can be bent towards the friction surface of the brake disc, thereby forming a channel through which brake dust can be guided. Any gaps between the guide plates and the brake disc can be kept very small, making them non-critical in terms of flow technology. If the air flowing into the cooling channels satisfies the Bernoulli effect, a low pressure can be created in the channel formed by the brake disc and guide plates. This low pressure not only draws brake dust towards the inlet of the cooling channels but also prevents brake dust from entering the environment through the gaps formed between the guide plates and the brake disc.

[0026] According to one embodiment of the present invention, the first brake pad has a brake pad support plate, and the guide plate is fixedly connected to the brake pad support plate, and is particularly integrally formed with the brake pad support plate of the first brake pad.

[0027] The guide plate can be automatically replaced along with the brake pads. The guide plate can have a brake dust absorption surface, the size of which can be such that the brake dust absorption surface is basically saturated as the brake pads reach the end of their service life.

[0028] According to one embodiment of the present invention, the first brake pad has a friction pad, and the guide plate is fixedly connected to the friction pad.

[0029] The guide plate can thus be adapted to the external geometry of the friction lining and can create a seal relative to the friction lining.

[0030] According to one embodiment of the present invention, the guide plate is fixedly connected to the brake caliper.

[0031] The guide plate can thus remain on the disc brake system when replacing brake pads. This is especially important in situations where the guide plate remains essentially unchanged during operation, and its function is not affected by wear or contamination.

[0032] According to one embodiment of the present invention, the device for forced guidance has a brake dust guiding element that forms a housing in the installed state, the brake dust guiding element extending on the second friction surface of the brake disc, away from the second brake pad and toward the inner edge of the second friction surface of the brake disc.

[0033] This allows brake dust generated between the second brake pad and the second friction surface to be reliably captured on the second friction surface, especially in the direction away from the brake caliper. Brake dust discharged on the caliper side can then be prevented from further diffusion by the brake caliper.

[0034] According to one embodiment of the present invention, the brake dust guiding element extends radially from the second brake pad away from the inner edge of the second friction surface of the brake disc on the second friction surface of the brake disc.

[0035] This ensures that no brake dust enters the environment. Brake dust guiding elements can also be positioned on both sides of the brake disc to guide brake dust exiting from those locations. For this purpose, the edges of the brake dust guiding elements can be curved towards the friction surface of the brake disc, thereby forming channels through which brake dust can be guided. The possible gaps between the brake dust guiding elements and the brake disc can be kept very small, making them non-critical in terms of flow technology.

[0036] According to one embodiment of the present invention, the second brake pad has a brake pad support plate, and the brake dust guiding element is fixedly connected to the brake pad support plate, and is particularly integrally formed with the brake pad support plate of the second brake pad.

[0037] The brake dust guiding element can be automatically replaced along with the brake pads. The brake dust guiding element can have a brake dust absorbing surface, the size of which allows the brake dust absorbing surface to be basically saturated as the brake pads reach the end of their service life.

[0038] According to one embodiment of the present invention, the second brake pad has a friction pad, and the brake dust guiding element is fixedly connected to the friction pad.

[0039] The brake dust guiding element can thus be adapted to the external geometry of the friction lining and can create a seal relative to the friction lining.

[0040] According to one embodiment of the present invention, the brake dust guiding element is fixedly connected to the brake caliper.

[0041] The brake dust guide element can thus remain on the disc brake system when replacing brake pads. This is especially important in situations where the brake dust guide element remains essentially unchanged during operation, and its function is not affected by wear or contamination.

[0042] According to one embodiment of the present invention, the device for forced guidance has an additional brake dust guiding element that forms a housing in the installed state, the brake dust guiding element extending radially away from the first brake pad toward the inner edge of the first friction surface of the brake disc.

[0043] As described above, brake dust can be directionally discharged from both sides of the brake disc using brake dust guiding elements.

[0044] According to one embodiment of the invention, in the installed state, an additional brake dust guiding element forming a housing extends radially away from the first brake pad on the first friction surface of the brake disc to the inner edge of the first friction surface of the brake disc.

[0045] This allows at least partially circumferentially extending channels to be formed on both sides of the brake disc through the brake dust guiding element and the friction surface of the brake disc.

[0046] According to one embodiment of the present invention, a vehicle equipped with the above-described disc brake device is provided.

[0047] This can reduce pollutant emissions from vehicle braking dust.

[0048] According to one embodiment of the present invention, a brake pad for a disc brake device is provided, wherein the brake pad has a brake pad support plate, a friction pad fixed on the brake pad support plate, and a device for forcibly guiding brake dust, wherein the device for forcibly guiding brake dust is connected to the brake pad.

[0049] The device for forced guidance of braking dust can thus be automatically replaced with the replacement of brake pads. The device for forced guidance of braking dust can have a braking dust absorbing surface, the size of which allows the braking dust absorbing surface to be substantially saturated as the brake pads reach the end of their service life. Furthermore, the device for forced guidance of braking dust can be adapted to the external geometry of the friction pads and can be manufactured to provide a flow-technical seal relative to the friction pads.

[0050] According to one embodiment of the present invention, the brake pads are designed and adapted for use in the above-described disc brake device.

[0051] This allows for disc brakes with lower pollutant emissions.

[0052] According to one embodiment of the invention, the device for forced guidance can extend radially away from the friction pad, particularly inward, in the mounting layout of the brake pad.

[0053] Brake dust can thus be guided along the surface of the brake disc, especially inwards, and prevents it from accidentally distributing between the brake pads and internal structures and reaching the environment. Furthermore, brake dust can be directed onto any existing structures to guide it to a brake dust filter.

[0054] According to one embodiment of the present invention, the device for forcibly guiding braking dust is integrally formed with the brake pad support plate, or is designed as an integral unit.

[0055] The device for forcibly guiding braking dust can be automatically replaced along with the replacement of brake pads. The device for forcibly guiding braking dust can have a brake dust absorption surface, the size of which can make the brake dust absorption surface substantially saturated as the brake pads reach the end of their service life.

[0056] According to one embodiment of the present invention, the brake pad has a friction pad, and a device for forcibly guiding brake dust is fixedly connected to the friction pad.

[0057] Devices used for forced guidance of braking dust can be adapted to the external geometry of friction linings and can create a seal relative to the friction linings.

[0058] According to one embodiment of the present invention, the device for forcibly guiding braking dust has at least a portion of its inner periphery having an arc-shaped edge.

[0059] The distance between the device used to forcibly guide brake dust and the brake disc can thus be kept substantially constant to create a uniform flow cross-section. Brake dust can therefore be simultaneously guided to multiple cooling channel openings, from where it is subsequently directed to a brake dust filter downstream of the cooling channel.

[0060] According to a variant of the invention, in relation to the internally ventilated brake disc, a device for forced guidance is formed by a guide plate that extends radially between the associated brake pad and the vent on the axial side of the brake disc where the vent is located, and is axially spaced relative to the friction surface, connected on one side to the brake pad and / or brake caliper, and on the other side extending to the region of the vent, such that a defined flow path for brake dust is formed from the brake pad, the flow path passing through the vent and cooling channel of the brake disc to the receiving port of the brake dust filter housing.

[0061] This measure prevents, or at least minimizes, the traditionally existing possibility of releasing brake dust into the environment, specifically in the area between the brake pads and the vents. Brake dust detaching from the brake pads is forcibly guided by guide plates and drawn into the vents by the airflow used to cool the brake discs, and continues through the cooling channels of the disc brake to the brake dust filter housing that receives the brake dust. The plates can be made of metal or other suitable non-metallic materials.

[0062] According to a variant of the invention, the guide plate ends in the vent region, ensuring airflow into the vent from the outside, in addition to guiding brake dust into the vent. That is, by positioning the guide plate at its free end in the vent's entry region, two independent flow channels are created within the vent's entry region: one for the airflow and the other for brake dust. These two flow channels combine in the direct entry region of the vent to form a single guide channel or cooling channel for the disc brake.

[0063] To ensure that brake dust is safely guided into the vent of the disc brake, according to one embodiment of the invention, the guide plate has a turning edge that curves toward the brake disc in the area of ​​the vent.

[0064] Alternatively or additionally, the guide plate can be designed, at least in sections, to follow the orientation of the brake disc reservoir. For example, the guide plate may have an edge on its inner circumference, said edge being at least in sections designed as an arc. In other words, the radius of this edge corresponds to the radius of the brake disc reservoir. This achieves a particularly effective seal while minimizing clearance loss.

[0065] To ensure particularly effective forced guidance of braking dust, in the case of a rotating disc brake system or a rotating brake disc according to another embodiment of the invention, the guide plate, together with the components surrounding the guide plate of the disc brake system and the brake dust filter housing, forms a confined braking dust guiding and ventilation system. This is achieved, for example, by the guide plate having an edge strip or rolled edge extending on the edge side up to near the brake disc.

[0066] According to one embodiment, the guide plate can be integrally formed with the brake lining support plate of the brake lining. This allows for the forced guidance of brake dust as specified in the invention in a particularly economical and simple manner. The cost of manufacturing this improved brake lining is virtually indistinguishable from that of manufacturing conventional brake linings.

[0067] According to another variation of the invention, with respect to the internally ventilated brake disc, the device for forced guidance is composed of a brake dust guiding element that forms a housing at least in the installed state. This brake dust guiding element extends radially on the axial side of the brake disc where there are no vents, between the associated brake pads and a brake disc canister arranged radially inward of the brake disc, and is connected to the brake pads and / or brake calipers.

[0068] According to one embodiment, the brake dust guiding element can also be integrally formed with the brake pad support plate of the brake pad, which also allows for particularly economical forced guidance of brake dust.

[0069] This measure prevents, or at least minimizes, the traditional possibility of releasing brake dust into the environment, specifically in the area between the brake pads and the brake disc reservoir on the side of the internally ventilated brake disc opposite the vent. Furthermore, it ensures that brake dust is collected at its point of origin and not released into the environment in an adverse manner.

[0070] In an improved embodiment of this variant design, the brake dust guiding element is directly in flow communication with the brake dust filter housing or directly connected to its receiving port. For example, the brake dust guiding element is fixed to the brake pads and / or brake calipers.

[0071] According to a variant of the invention, the internally ventilated brake disc is provided to have both a guide plate and a brake dust guiding element of the type described above, thereby particularly effectively preventing brake dust from being released into the environment, at least more effectively than in the conventional way.

[0072] Regarding the solid brake disc that does not have a vent with a cooling channel, the device for forced guidance is formed by a brake dust guiding element of the type described above, which is arranged at least on one side, for example both sides, of the brake disc and forms a housing at least in the installed state. The brake dust guiding element extends radially between the brake pads and the brake disc canisters arranged radially inside the brake disc and is connected to the brake pads and / or brake calipers.

[0073] In this case, the brake dust guiding element is also, for example, fixed to the brake pads and / or brake calipers.

[0074] The present invention also relates to a vehicle having a disc brake device of the type described above.

[0075] Another aspect of the invention relates to a brake pad for a disc brake system, having a brake pad support plate and a friction pad fixed to the brake pad support plate. A device for forcibly guiding brake dust can be connected to the brake pad according to the invention. This allows the device for forcibly guiding brake dust to be replaced along with the brake pad during routine maintenance, which is a convenient solution, especially for repairing damage to the device for forcibly guiding brake dust.

[0076] According to the improved design, the device used for forced guidance is a guide plate or brake dust guiding element, which extends radially away from the friction lining in the brake pad mounting layout.

[0077] For example, the device for forcibly guiding brake dust is integrally formed with the brake pad support plate. This allows for the forced guidance of brake dust according to the present invention in an economical and simple manner. The cost of manufacturing this improved brake pad is almost indistinguishable from the cost of manufacturing conventional brake pads.

[0078] Finally, the guide plate or brake dust guiding element may have at least a portion of its inner periphery with an arc-shaped edge, the bending radius of which corresponds to the diameter of the brake disc canister in the installed state. Attached Figure Description

[0079] The invention is further described below with reference to the embodiments schematically shown in the accompanying drawings. However, the invention is not limited to these embodiments, but includes all design schemes defined by the claims. Wherein:

[0080] Figure 1 This illustration schematically shows a vehicle equipped with disc brakes.

[0081] Figure 2 (Prior art) shows according to Figure 1 A three-dimensional diagram of the wheel frame of a vehicle with traditional disc brakes.

[0082] Figure 3a A separate perspective view is shown of a disc brake device according to a variant design of the invention, incorporating a key component of the invention for forced guidance of braking dust.

[0083] Figure 3b Showing according to Figure 3a The schematic diagram of the working principle of the device for forcibly guiding and braking dust is shown below.

[0084] Figure 3c The disc brake device is shown according to Figure 3a A supplementary cross-sectional view illustrating the working principle of the device for forcibly guiding braking dust.

[0085] Figure 4a A perspective view of a disc brake device with a wheel frame, incorporating a key component of the invention for forced guidance of braking dust, according to a variant design of the invention, is shown.

[0086] Figure 4b Showing according to Figure 4a A cross-sectional view of a disc brake device.

[0087] Figure 5 A separate perspective view of the disc brake device is shown, illustrating another embodiment of the key component of the invention for forcibly guiding braking dust.

[0088] Figure 6 A separate perspective view of the brake pad according to the invention is shown. Detailed Implementation

[0089] Figure 1 First, the means of transport 1, in this case, is shown very schematically, namely, the passenger car, based on... Figure 2 Each wheel 2 has a wheel carrier 3 for guiding the wheel, and each wheel carrier has a disc brake 4. The disc brake 4 has, on one hand, a brake disc 5, which is torsionally connected to the associated wheel 2 via a brake disc reservoir 6 formed or arranged radially inside the brake disc. On the other hand, the disc brake 4 has a brake caliper 7 that crosses the brake disc 5 radially outside, the brake caliper 7 having brake pads 8, 9 arranged on both sides of the brake disc 5 (see especially...). Figure 3c , 4b The brake caliper 7 is fixed to the wheel frame 3.

[0090] The brake disc 5 is a so-called internally ventilated brake disc 5, which has multiple vents 10 arranged radially inward and on the vehicle side in the installed state, distributed around the periphery of the brake disc 5. The vents 10 are in flow-technically connected to the cooling channels 11 inside the brake disc 5 (especially referring to...). Figure 3c , 4b Here, during operation, that is, during the rotational movement of the wheel 2 and therefore the brake disc 5, the cooling channel 11 directs the air entering the vent 10 as an airflow 12 radially outward from the brake disc 5 due to the centrifugal force acting thereon, thereby effectively releasing the heat introduced into the brake disc 5 due to friction into the environment.

[0091] As mentioned above, braking operations generate so-called brake dust 13 (especially refer to...). Figure 3b , 3c 4a) Braking dust is typically released into the environment in an adverse manner, or as... Figure 3a , 3b Figure 4a schematically shows, for example, the collection in a brake dust filter housing 14, which is known per se and corresponds to the disc brake device 4. Viewed along the main rotation direction 15 of the brake disc 5, the brake dust filter housing 14 is arranged behind the brake caliper 7 together with the brake pads 8, 9 and radially surrounds the brake disc 5, such that detached brake dust 13 can be transferred through the brake dust filter housing 14 to the receiving port 16 of the brake caliper 7. The main rotation direction 15 of the brake disc 5 is understood as the direction of rotation of the brake disc that should be recorded when the vehicle 1 is moving forward.

[0092] As stated or indicated above, it is necessary to prevent the release of brake dust 13 into the environment as much as possible, at least to minimize it more effectively than in the prior art. To meet this need, the disc brake device 4 includes at least one device for forcibly guiding the brake dust 13, wherein the at least one device for forcibly guiding is used, for example, in conjunction with a brake dust filter housing 13 according to the prior art.

[0093] Figures 3a to 3c In this respect, a first variant of the invention is shown, according to which the device for forced guidance is constituted by a guide plate 17. The guide plate 17 extends on the side of the vent 10 of the brake disc 5 over the associated brake pad, i.e., between the first brake pad 8 and the vent 10, and is further orthogonally connected to the first brake pad 8 and / or the brake caliper 7 at a distance from the brake disc 5. Especially from... Figure 3c It can also be seen that the guide plate 17 extends to this extent into the area of ​​the vent 10 so as to form a defined flow path for brake dust 14 starting from the first brake pad 8 opposite the first friction surface 51 of the brake disc 5, the flow path passing through the vent 10 and cooling channel 11 of the brake disc 5 to the receiving port 16 of the brake dust filter housing 14 (see reference). Figure 3c ).

[0094] like Figure 3c As shown, the free end of the guide plate 17 terminates in the region of the vent 10, ensuring the airflow 12 from the outside into the vent 10, in addition to guiding the brake dust 13 into the vent 10. That is, two separate flow channels 18, 19 are formed in the entry region of the vent 10 by the free end of the guide plate 17, one for the airflow 12 and the other for the brake dust 13. The two flow channels 18, 19 combine in the direct entry region of the vent 10 to form a guide channel or the cooling channel 11 of the brake disc 5. To ensure the safe guidance, especially of the brake dust 13, into the vent 10 of the brake disc 5, according to this embodiment, the guide plate 17 has a turning edge 20 that bends towards the vent 10 in the region of the vent 10, or the free end of the guide plate 17 forms the turning edge 20.

[0095] Figure 3b The working principle of the invention is illustrated in a very schematic way. It can be seen that the brake dust 13 is drawn away or extracted from the brake pads 8 by the airflow 12, which is the cooling air for the brake disc 5, and is forcibly guided from there to the brake dust filter housing 14 by centrifugal force through the cooling channel 11 of the internally cooled brake disc 5.

[0096] To ensure particularly effective forced guidance of brake dust 13, considering the rotation system of disc brake 4 or rotating brake disc 5, the guide plate 17, together with the components surrounding the guide plate of disc brake 4 and brake dust filter housing 14, forms a conspicuously enclosed brake dust guiding and ventilation system. This is achieved, for example, by having an edge strip or rolled edge (not shown) extending on the edge side up to near the brake disc 5.

[0097] according to Figure 4a and Figure 4b The second exemplary variant of the invention shown here comprises a device for forced guidance consisting of a brake dust guiding element 21 forming a housing, at least in the installed state. This brake dust guiding element extends on the side of the brake disc 5 opposite the vent 10, between the associated brake pad, i.e., the second brake pad 9, and the radially inwardly arranged brake disc canister 6 of the brake disc 5, and is connected to or fixed to the second brake pad 9 and / or brake caliper 7 opposite the second friction surface 52 of the brake disc 5. According to this embodiment, the brake dust guiding element 21 is constituted by a folded plate, which, together with the second brake pad 9 and the brake disc 5 viewed in the main rotational direction 15 of the brake disc, forms a guiding channel 22 for brake dust 13 to the receiving port 16 of the brake dust filter housing 14. According to this embodiment, the formed guiding channel 22 is directly connected to the receiving port 16.

[0098] Figure 4a Furthermore, the working principle of the invention is illustrated very schematically. Accordingly, due to the rotational movement of the brake disc 5 and the resulting airflow 23, brake dust 13 is entrained in the main rotational direction 15 of the brake disc 5 and transported into the brake dust filter housing 14.

[0099] According to a variant of the invention, the disc brake device 4 has a guide plate 17 and a brake dust guiding element 21 (not shown) of the type described above. In this case, the guide plate 17 is arranged on the side of the vent 10 of the brake disc 5, while the brake dust guiding element 21 is arranged on the opposite side of the brake disc 5.

[0100] The above embodiment is based on a brake disc 5 with internal ventilation having vents 10 and cooling channels 11. Alternatively, the brake disc 5 can also be designed as solid, i.e., without such vents 10 and cooling channels 11. With such a solid brake disc 5, it will be clear to those skilled in the art that the device for forcibly guiding brake dust 13 in the form of the aforementioned guide plate 17 is unnecessary. Instead, the device for forcibly guiding brake dust 13 is formed solely by the aforementioned brake dust guiding element 21. For example, this brake dust guiding element 21 is arranged on both sides of the solid brake disc 5 to particularly effectively prevent brake dust from being released into the environment, minimizing it at least more effectively than conventionally. For simplicity, illustrations of this variant of the invention are omitted, as it is essentially the same as that according to... Figure 4a The corresponding diagram.

[0101] Figure 5 The diagram shows a disc brake device 4 according to another embodiment of the invention. Functionally, it refers to the embodiment described above. The essential difference is that the guide plate 17 for forcibly guiding brake dust is integrally formed with the brake pad support plate 89 of the brake pads 8, 9 and has an arc-shaped edge 89' on its inner periphery. The curved portion of the edge 89' extends about the axial direction. The effect is that the forced guidance of brake dust according to the invention can be achieved in a particularly economical and simple manner. The cost of manufacturing such improved brake pads 8, 9 is almost indistinguishable from the cost of manufacturing conventional brake pads.

[0102] Finally in Figure 6 Brake pads 8 and 9 according to the invention are shown. A friction pad 891 is provided herein, which is fixed to a brake pad support plate 89. The brake pad support plate 89 extends radially inward (relative to the mounting layout) such that it forms a guide plate 17 in a section. Alternatively (not shown), such a section forming the guide plate 17 may also be provided circumferentially on both sides of the brake pad support plate 89. The guide plate 17 formed by the brake pad support plate 89 has an arcuate edge 89' on its inner periphery, the curvature of which corresponds to the radius of a predetermined brake disc reservoir.

[0103] List of reference numerals in the attached diagram:

[0104] 1. Transportation

[0105] 2 wheels

[0106] 3. Wheel frame

[0107] 4. Disc brake system

[0108] 5. Brake disc

[0109] 51 The first friction surface of the brake disc

[0110] 52. The second friction surface of the brake disc

[0111] 6 Brake disc tank

[0112] 7. Brake calipers

[0113] 8 First brake pad

[0114] 9 Second brake pad

[0115] 89 Brake Liner Support Plate

[0116] 89' Rounded edges

[0117] 891 Friction Liner

[0118] 10 Ventilation openings

[0119] 11 Cooling Channels

[0120] 12 Airflow

[0121] 13 Brake dust

[0122] 14 Brake dust filter housing

[0123] 15. Main rotation direction

[0124] 16. Receiver (Brake dust filter housing 14)

[0125] 17 Guide Plate

[0126] 18 Flow channels

[0127] 19. Flow channel

[0128] 20 Turning edge

[0129] 21 Braking dust guiding element

[0130] 22 Guiding Channels

[0131] 23 Airflow

Claims

1. A disc brake device (4) for a vehicle (1), the disc brake device having a brake disc (5) having an axially oriented first friction surface (51) and an axially oriented second friction surface (52) opposite to the first friction surface, the disc brake device having a brake caliper (7) bridging the brake disc (5), the brake caliper having a first brake pad (8) corresponding to the first friction surface and a second brake pad (9) corresponding to the second friction surface, wherein, The disc brake device (4) has a brake dust filter housing (14) with a receiving port (16) that surrounds the brake disc (5) radially outward. The brake dust filter housing is arranged behind the brake caliper (7) when viewed along the main rotation direction (15) of the brake disc (5). The disc brake device (4) is characterized by having a device for forcibly guiding brake dust (13), wherein the device (17, 21) for forcibly guiding brake dust originates from at least one of the first and second brake pads (8, 9) and extends radially inward past the corresponding friction surfaces (51, 52) of the brake disc (5) toward the inner edge of the friction surfaces. The brake dust discharged radially inward between at least one of the first and second brake pads and the brake disc is guided along at least one sub-flow path of the brake dust along the friction surfaces (51, 52) corresponding to one of the first and second brake pads (8, 9) to the receiving port (16) of the brake dust filter housing (14).

2. The disc brake device (4) according to claim 1, wherein, The device (17, 21) for forcibly guiding braking dust originates from at least one of the first and second brake pads (8, 9) and extends radially inward across the corresponding friction surfaces (51, 52) of the brake disc (5) to the inner edge of the friction surfaces.

3. The disc brake device (4) according to any one of claims 1 and 2, wherein, The brake disc (5) is an internally ventilated brake disc, wherein the brake disc has a vent (10) radially internally in the region of the brake disc reservoir (6) on the vehicle side, the vent being in flow-technically connected to a cooling channel (11) inside the brake disc (5), and the device for forcibly guiding brake dust has a guide plate (17) extending radially between the first brake pad (8) and the vent (10) along a first friction surface (51) of the brake disc (5) on which the vent (10) is provided, and extending axially spaced from the first friction surface (51) of the brake disc (5) into the region of the vent (10), so as to form a defined flow path for brake dust (13) from the first brake pad (8) through the guide plate (17), the flow path passing through the vent (10) and the cooling channel (11) of the brake disc (5) to the receiving port (16) of the brake dust filter housing (14).

4. The disc brake device (4) according to claim 3, wherein, The guide plate (17) ends in the area of ​​the vent (10), thereby ensuring an airflow (12) from the outside into the vent (10) in addition to guiding the brake dust (13) into the vent (10).

5. The disc brake device (4) according to any one of claims 3 and 4, wherein, The guide plate (17) has a steering edge (20) that curves toward the brake disc in the region of the vent (10), the steering edge being guided around the inner edge of the friction surface.

6. The disc brake device (4) according to any one of claims 3 to 5, wherein, The guide plate (17) is designed at least partially on its inner periphery to follow the direction of the brake disc canister (6).

7. The disc brake device (4) according to any one of claims 3 to 6, wherein, The guide plate (17), together with the brake caliper (7), the brake disc (5) and the components surrounding the brake dust filter housing (14), constitute a brake dust guiding and ventilation system that is as enclosed as possible.

8. The disc brake device (4) according to any one of claims 3 to 7, wherein, The first brake pad (8, 9) has a brake pad support plate (89), and the guide plate (17) is fixedly connected to the brake pad support plate (89) of the first brake pad (8, 9).

9. The disc brake device (4) according to any one of claims 3 to 7, wherein, The first brake pad (8, 9) has a friction pad (891), and the guide plate (17) is fixedly connected to the friction pad (891).

10. The disc brake device (4) according to any one of claims 3 to 7, wherein, The guide plate (17) is fixedly connected to the brake caliper (7).

11. The disc brake device (4) according to any one of claims 1 to 10, wherein, The device for forcibly guiding braking dust has a braking dust guiding element (21) that forms a housing in the installed state. The braking dust guiding element extends on the second friction surface (52) of the brake disc (5) from the second brake pad (9) toward the inner edge of the second friction surface (52) of the brake disc (5).

12. The disc brake device (4) according to claim 11, wherein, The brake dust guiding element (21) extends radially from the second brake pad (9) to the inner edge of the second friction surface (52) of the brake disc (5) on the second friction surface (52) of the brake disc (5).

13. The disc brake device (4) according to any one of claims 11 and 12, wherein, The second brake pad (8, 9) has a brake pad support plate (89), and the brake dust guiding element (21) is fixedly connected to the brake pad support plate (89) of the second brake pad (8, 9).

14. The disc brake device (4) according to any one of claims 11 and 12, wherein, The second brake pad (9) has a friction pad (891), and the brake dust guiding element (21) is fixedly connected to the friction pad (891).

15. The disc brake device (4) according to any one of claims 11 and 12, wherein, The brake dust guiding element (21) is fixedly connected to the brake caliper (7).

16. The disc brake device (4) according to any one of claims 11 to 15, wherein, The device for forcibly guiding brake dust has an additional brake dust guiding element (21) that forms a housing in the installed state, the brake dust guiding element extending radially from the first brake pad (9) toward the inner edge of the first friction surface (52) of the brake disc (5) on the first friction surface (52) of the brake disc (5).

17. The disc brake device (4) according to claim 16, wherein, The additional brake dust guiding element (21) forming a housing in the installed state extends radially from the first brake pad (9) to the inner edge of the first friction surface (52) of the brake disc (5) on the first friction surface (52) of the brake disc (5).

18. The disc brake device (4) according to claim 6, wherein, The guide plate (17) has an arc-shaped edge (89') at the inner periphery of the guide plate.

19. The disc brake device (4) according to claim 8, wherein, The guide plate (17) is integrally formed with the brake pad support plate (89) of the first brake pad (8).

20. The disc brake device (4) according to claim 13, wherein, The brake dust guiding element (21) is integrally formed with the brake pad support plate of the second brake pad (9).

21. A means of transport (1) having a disc brake (4) according to any one of the preceding claims.

Images