DE102018124405B4 - Brake dust particle filter with water / sludge drain - Google Patents

Abstract

Brake dust particle filter (20) for an arrangement (10) with a brake disc (12), whereby the brake dust particle filter (20) has a ring-section-shaped housing (24) which at least partially encompasses the brake disc (12) in the assembled state with a housing interior (32) characterized in that the housing interior (32) has at its lowermost point (U) an axially designed drain recess (22) for the outflow of fluid from the housing interior (32), the housing (24) on the drain recess (22) being an external, self-contained Has predominantly axially expanding guide (30), which serves to guide the fluid, and wherein the guide (30) is closed in its circumferential direction, in particular tubular, or open, in particular channel-shaped.

Description

Technical field

The invention relates to a brake dust particle filter for an arrangement with a brake disc and a brake caliper. Furthermore, the invention relates to an arrangement with a brake disc, a brake caliper and such a brake dust particle filter.

State of the art

It is known to use brake dust particle filters in order to collect and subsequently dispose of the brake abrasion that arises during the braking process in the form of dust particles. Due to the large number of motor vehicles and the associated high brake dust emissions, disc brake systems are often combined with such brake dust particle filters.

The DE 10 2012 022 886 A1 discloses a brake dust particle filter for mounting on a cover plate of a brake disc. The brake dust particle filter is designed as a ring segment and can be connected to the cover plate via various through recesses and tabs. In particular, the brake dust particle filter has a passage recess, optionally with an adjoining outlet pipe, for ventilation. Brake dust can be discharged into the surroundings via this recess with the aid of an air flow generated by the rotating wheels, and cleaning of the disc brake arrangement can thus be avoided.

The DE 10 2006 051 972 A1 discloses a brake dust particle filter for a disc brake. Several air and brake dust inlet openings ensure the cooling of the brake disc and the collection of the brake dust. Retained brake dust can be disposed of via a special opening.

From the DE 79 31 520 U1 an encapsulated brake disc arrangement is known which has an opening with a kind of beak for extracting brake dust which is not present at a deepest point of the encapsulation.

From the FR2751390A1 a drum brake arrangement is known which has a passage opening closed by a sieve at the lowest point in an anchor plate.

The brake dust particle filters described in the prior art concentrate on the collection and the controlled blowing out of brake dust and neglect the problem of fluid entry into the brake dust particle filter.

When there is strong water contact with the brake system, such as when driving in the wading or raining, conventional brake dust padicle filters are exposed to the risk of silting up, in particular the clogging of filter and / or functional openings. Ingressing water removes the retained brake dust, penetrates into fine-pored filter medium and clogs it. In addition, especially in off-road driving, there can be an increase in the amount of heavily contaminated water, including mud. In particular, mud blocks air-guiding functional openings, which are provided, for example, for cooling the brake disc or for removing the brake dust. Previous systems do not offer a sufficient possibility of counteracting silting or clogging, or the sealing by dirt or deposits of the collecting device as a result of the introduction of fluid.

Disclosure of the invention

In contrast, the object of the present invention is to develop a brake dust particle filter which retains as much brake dust as possible in the filter, additionally offers a high level of security against silting up and clogging of the collecting device, in particular the filter medium, while being easy to maintain and inexpensive to carry out and minimizing the contamination of the rim , at best this counteracts.

This object is achieved by a brake dust particle filter according to claim 1 and an arrangement according to claim 10. The dependent claims represent preferred further developments.

The brake dust particle filter according to the invention has a ring-section-shaped housing, which partially encompasses the brake disc in the assembled state, with a housing interior, the housing interior having an axially designed drainage recess at its lowest point, which ensures the outflow of liquids from the housing interior.

The term bottom point refers to such a position on the housing of the brake dust particle filter, in particular the interior of the housing, which geometrically represents the bottom point under the influence of gravity. It is accordingly avoided that introduced fluid can accumulate in other parts of the housing and is prevented from flowing away. Axial discharge of fluid and / or solid entry also has the advantage over one radial discharge, taking up less space in the radial direction of the brake disc. This space is structurally narrow due to the adaptation of the rim dimension to the brake disc dimension. Furthermore, the filter effect can be used on the entire radial housing circumference when the drain recess is formed axially.

Position and direction information such as "top", "bottom", "bottom", "top" etc. refer to the installed state of the brake dust particle filter or the arrangement, whereby cylinder coordinate information such as "radial", "axial", "circumferential", etc refer to a direction of rotation of the brake disc in a mounting arrangement of the brake dust particle filter.

According to the invention, fluid and solid entry, in particular water, brackish water and sludge entry, is transported into the brake dust particle filter through the housing interior, in particular via the housing wall, to a collection point and then via an outlet recess on the housing wall, in particular on an axially parallel to the brake disc spaced part of the housing wall, passed out of the housing. Because of this, only small residues of the fluid or the solid remain in the brake dust particle filter. Silting up or clogging of the brake dust particle filter or the brake dust collecting device can thereby be effectively prevented.

According to the invention, the housing has an outer, predominantly axially expanding guide on the drain recess. The guide serves to direct the fluid flowing out of the drain recess away from the housing of the brake dust particle filter and thus prevents the liquid drained from dripping off the wall of the drain recess. An axial extension of the guide relates to an extension directed parallel to the axis of rotation of the brake disc.

The guide is either closed in its circumferential direction (= axial direction), in particular tubular, or open, in particular gutter-like. This offers the advantage of a particularly effective derivation of the fluid entered into the brake dust particle filter, which is adapted to the intended use and to the nature of the entered fluid. The need to adapt the drain recess and the guidance can result from the different areas of application of motor vehicles. For example, there is an increased need for off-road vehicles to drain thicker fluids, in particular sludge and / or brackish water. On the other hand, there are, for example, road vehicles where the focus is on the quick and clean drainage of aqueous fluids, especially rainwater.

In a preferred development, the guide on the drain recess is inclined by an angle from the horizontal or the axis of rotation of the brake disc, in particular in the direction of gravity. The inclination of the guide promotes the discharge of the entered fluid. The inclination is more than 0.5 °, preferably more than 5 °, particularly preferably more than 8 °.

A development is particularly preferred in which the guide is made in one piece with the housing of the brake dust particle filter. As a result, the complexity of the overall device and the number of device components are reduced, thus making both manufacture and assembly easier. The invention is of course not limited to this and also includes an assembled, ie. H. two-part design.

Alternatively or additionally, the drainage recess can be at least partially, preferably completely, covered by a filter medium, in particular a metal grid and / or metal fleece. This can prevent separated brake dust particles from being released into the open with the fluid to be removed.

Also preferred is an embodiment in which the housing of the brake dust particle filter is made in several parts. The attachment of the brake dust particle filter is simplified by dividing the housing into a plurality of subcomponents, in particular three parts or two parts, each of which preferably surrounds the brake disk in half. Furthermore, the effort in the case of maintenance is reduced, for example when the brake dust particle filter has to be replaced or cleaned, since there is no need to completely dismantle the brake dust particle filter.

In a preferred embodiment, the housing of the brake dust particle filter in the vicinity of the lowest point on the wall of the housing interior, in particular the housing base, has an inclination toward the lowest point. The inclination is more than 0.5 °, preferably more than 5 °, particularly preferably more than 8 °. The housing base can have the same inclination as the guide, so that the fluid flow can take place very evenly. This ensures the complete drain of the fluid entered and ensures that no fluid residue remains in the brake dust particle filter.

An embodiment with at least one recess on the housing is particularly advantageous. Scope of the brake dust particle filter, which is covered by a filter medium. An air flow loaded with brake dust particles can be filtered particularly effectively through this filter recess. This is based on the utilization of the centrifugal force, which acts on the air flow entrained by the rotating brake disc and causes a radial or tangential outflow of the particles related to the axis of rotation of the brake disc. The air flows through the filter medium and the filter recess while the brake dust particles remain in the filter medium.

Another preferred embodiment is one in which the housing of the brake dust particle filter has flow-promoting depressions, in particular flow grooves on the wall of the housing interior, more precisely a wall of the housing facing the housing interior. Furthermore, the design of fluid-conducting elevations, in particular guide ribs, is particularly advantageous in order to effectively conduct the flowing fluid around areas to be protected, in particular the functional openings and the filter media. Furthermore, special surface coatings can be used in order to prevent the fluid or solid that has been introduced from sticking and to allow said entries to be removed quickly.

The object is further achieved by an arrangement with a brake disc, a brake caliper, in particular a cover plate, and a brake dust particle filter described here, the brake dust particle filter being arranged in the lower region of the brake disc. With this arrangement, an optimal drainage of the fluid entered into the brake dust particle filter is achieved via the housing walls as far as into the interior of the housing with subsequent outflow through the drain recess.

In a preferred development, the cover plate is part of the housing of the brake dust particle filter. This not only reduces the manufacturing and assembly costs, but also manages the effective outflow of fluid inputs from the arrangement. In the conventional application, in particular without fluid entries into the arrangement, the level of brake dust particles captured is also increased by the slurry dust particle filter, which leads to a reduced load on the environment from brake dust.

In a particularly preferred development of the arrangement described, the arrangement has a rim and a guide for draining off fluid, in particular mud or brackish water, and extends the guide to the inner edge of the rim in order to prevent the rim from becoming dirty due to dripping Prevent fluid, especially mud and / or brackish water. This is particularly advantageous if the brake dust particle filter described is used in an arrangement with a flat-bed rim. Due to the flat bed of the rim, which is characterized by a slight inclination from the horizontal, there is no shape-favored drain over the rim. Soiling, for example due to dripping of mud or brackish water, remains disproportionately long on the rim or does not flow away at all. By guiding with said length, this contamination by fluid introduced, in particular sludge or brackish water, can be effectively prevented. Alternatively or additionally, a guide of a similar shape, but oriented in the direction of the rim spokes, can be part of the arrangement. In this case, the guide has a cleaning function due to its special orientation, since fluid introduced into the arrangement, in particular rainwater, is directed towards the spokes of the rims in order to rinse them. Adhesive dirt on the rim can thus be used as an alternative or in addition to actual benefits can be effectively solved.

Furthermore, the size of the drain recess, in particular its diameter, can be adapted to the special requirements of different purposes. Depending on the degree of soiling to be expected and the viscosity of the fluid entered in the arrangement, the size of the recess and / or the guide, in particular the diameter, can be varied. The diameter of the drainage recess is advantageously more than 0.5 cm, preferably more than 1 cm, particularly preferably more than 2 cm. This offers the advantage of preventing the drain recess from becoming blocked in the case of viscous fluids, in particular viscous liquids, or of improving the cleaning effect in the case of low-viscosity fluids, in particular water, by reducing the diameter of the drain recess.

Further advantages of the invention result from the description and the drawing. Likewise, according to the invention, the features mentioned above and those which are explained further can be used individually or in combination in any combination. The embodiments shown and described are not to be understood as an exhaustive list, but rather have an exemplary character for the description of the invention.

Figure list

• 1 eine erste Ausführungsform einer Anordnung mit einer Felge;
• 2 eine Schnittdarstellung II-II der Anordnung mit einer Felge aus 1;
• 3 eine Draufsicht auf eine zweite Ausführungsform einer Anordnung mit einer Felge;
• 4 eine Schnittdarstellung IV-IV der Anordnung mit einer Felge aus 3;
• 5 eine Seitenansicht der zweiten Ausführungsform der Anordnung aus 3 ohne Felge;
• 6 eine perspektivische Ansicht der zweiten Ausführungsform der Anordnung aus 3 ohne Felge; und
• 7 eine Seitenansicht einer weiteren Ausführungsform einer Anordnung.

The drawing shows:

• 1 a first embodiment of an arrangement with a rim;
• 2nd a sectional view II-II the arrangement with a rim 1 ;
• 3rd a plan view of a second embodiment of an arrangement with a rim;
• 4th a sectional view IV-IV the arrangement with a rim 3rd ;
• 5 a side view of the second embodiment of the arrangement 3rd without rim;
• 6 a perspective view of the second embodiment of the arrangement 3rd without rim; and
• 7 a side view of another embodiment of an arrangement.

Embodiments of the invention

1 shows a first embodiment of an arrangement 10th with a brake disc 12 , a brake caliper 14 , a cover plate 16 , a rim 18th and a brake dust particle filter 20th in the assembled state, which is in the lower area of the brake disc 12 located. The brake dust particle filter 20th points at a lowest point U a drain recess 22 on that parallel to the brake disc 12 spaced side of the housing 24th is arranged.

2nd shows a sectional view II-II the arrangement 10th with the rim 18th out 1 . The brake dust particle filter 20th has a case back 26 on the radial peripheral side 28 of the housing 20th on, the case back 26 has an inclination β with respect to the horizontal H to the lowest point U on.

3rd shows a plan view of a second embodiment of an arrangement 10th with a brake disc 12 , a brake caliper 14 , a cover plate 16 , a rim 18th and a brake dust particle filter 20th . The brake dust particle filter 20th shows a leadership 30th on that at the drain recess 22 at the lowest point U of the housing 24th is arranged or formed. The guide is preferably 30th - as in the present case - in one piece with the housing 24th or part of the housing 24th educated.

4th shows a section IV-IV through the arrangement 10th out 3rd . Under certain environmental conditions, such as driving a rain, car wash, wading or off-road, fluid can flow through the gaps between the brake discs 12 and the cover plate 16 , between the brake disc 12 and the brake dust particle filter 20th as well as various recesses in the cover plate 16 and / or the brake dust particle filter 20th in the arrangement 10th penetration. Then said fluid remains in the assembly 10th , this leads to unwanted silting up or clogging of the brake dust particle filter 20th . The function of the brake dust particle filter 20th is impaired or completely canceled To the function of the brake dust particle filter 20th to ensure this points at the lowest point U of the housing 24th , in particular the interior of the housing 32 , a drain recess 22 on. In the arrangement 10th Entered fluid and / or solids can via the wall of the housing 24th , the wall of the cover plate 16 and / or over the wall of the brake disc 12 to the lowest point U of the housing 24th , in particular the interior of the housing 32 , reach. About that, mostly parallel to the brake disc 12 , axially formed drain recess 22 the fluid is then out of the housing 24th headed.

Conduction of the fluid through the housing interior can be particularly effective 32 done when the cover plate 16 part of the housing 24th of the brake dust particle filter 20th is. Through a flow-optimized design of the interior of the housing 32 ensures that the fluid is drained quickly even over the greatest distance between the lowest point U opposite, top point O and the bottom point U he follows.

The order 10th shows a leadership 30th on that on the case 24th on the outside of the drain recess 22 is positioned. The leadership 30th extends predominantly in the axial direction, or parallel to a brake disc rotation axis H , up to the rim of the rim 34 and has a tendency α from one to the horizontal H , or one parallel to the axis of rotation of the brake disc, and through the lowest point U level. The inclination α can in relation to the available space, especially the space between the brake dust particle filter 20th and rim well 36 , be adjusted. There is also the inclination α a way to specify the flow rate of the emerging fluid. This is particularly important for higher viscosity fluids.

The leadership 30th in the embodiment according to 4th is open in its circumferential direction, in particular groove-like. Depending on the application, the guide can 30th likewise be closed in their circumferential direction, in particular tubular. Furthermore, the cross section of the guide 30th be round, rounded or angular in shape. In an advantageous embodiment, the guide 30th in one piece with the housing 24th of the brake dust particle filter 20th educated. This simplifies the assembly and manufacture of the brake dust particle filter 20th In addition, the leadership 30th as a separate component on the brake dust particle filter 20th be attached to a flexible retrofitting of the arrangement 10th to enable a special application or to existing systems with brake dust particle filter 20th without guidance 30th (please refer 1 ) inexpensive to retrofit.

5 shows a side view of the second embodiment of the arrangement 10th with the brake disc 12 , the brake caliper 14 and the brake dust particle filter 20th . The brake dust particle filter 20th has the outer, largely axially extending guide 30th , the radial peripheral side 28 and the case back 26 on.

6 shows the second embodiment of the arrangement 10th with the brake disc 12 , the brake caliper 14 , the cover plate 16 and the brake dust particle filter 20th out 3rd . One is mainly in the axial direction, mostly parallel to the horizontal H extending leadership 30th is on the outside of the housing 24th of the brake dust particle filter 20th arranged.

The attachment of the brake dust particle filter 20th can have at least one fastener 38 , in particular a screw, on a non-movable component, in particular the cover plate 16 respectively. The housing 24th can be designed in one or more parts according to the application, in order to meet special assembly or maintenance requirements. In the case of a multi-part version of the housing 24th the sub-housings are connected using the fastening elements 38 or via specially provided fastening elements (not shown) between the partial housings. Advantageously, the sub-housings are movable relative to one another, in particular foldable, arranged around access to the interior of the housing 32 (please refer 4th ) during assembly and / or maintenance, for example when changing the filter medium, without dismantling the brake dust particle filter 20th to guarantee.

The housing 24th of the brake dust particle filter 20th has a circumferential side 28 on, which serves to form filter recesses (not shown). On the, the interior of the housing 32 (please refer 4th ) facing side of the housing 24th there is a filter medium (not shown) for receiving brake dust particles from the arrangement 10th air flowing through during operation. During operation, brake dust is in the form of particles from the brake disc 12 surrounding air picked up and carried by this. The air first flows through the filter medium and then through the filter recess on the circumferential side 28 of the housing 24th . The brake dust particles are separated in the filter medium.

7 shows the side view of another embodiment of an arrangement 10th , taking a brake dust particle filter 20th a tour 30th has, which extends axially outwards, in the assembled state in the direction of the fig spokes 40 (see. 4th ) extends through such training of leadership 30th the discharged fluid can have a flushing effect on the rim spokes 40 directed to clean them of dirt and deposits.

Taking a look at all the figures in the drawing, a brake dust particle filter 20th as well as an arrangement 10th with a brake disc 12 , a brake caliper 14 , in particular a cover plate 16 , and the brake dust particle filter 20th disclosed. The brake dust particle filter 20th is in the assembled state in the lower area of the brake disc 12 arranged and points at its lowest position U on the housing 24th a drain recess 22 in the form of an opening that allows liquids to flow out of the housing 24th of the brake dust particle filter 20th serves. The brake dust particle filter 20th can take a tour 30th have the emerging fluid in the direction of the rim inner rim 34 and / or in the direction of the rim spokes 40 from the brake dust particle filter 20th leads away.

Claims (12)

Brake dust particle filter (20) for an assembly (10) with a brake disc (12), wherein the brake dust particle filter (20) comprises a ring section-shaped, the brake disc (12) at least partially encompassing the mounted state housing (24) having a housing interior (32), characterized characterized in that the housing interior (32) has at its lowermost point (U) an axially designed drain recess (22) for the outflow of fluid from the housing interior (32), the housing (24) on the drain recess (22) being an external, self-contained Has predominantly axially expanding guide (30), which serves to guide the fluid, and wherein the guide (30) is closed in its circumferential direction, in particular tubular, or open, in particular channel-shaped. Brake dust particle filter after Claim 1 , wherein the guide (30) is in particular made in one piece with the housing (24). Brake dust particle filter after Claim 2 , wherein the guide (30) has an inclination (α) with respect to the horizontal (H). Brake dust particle filter according to one of the Claims 1 to 3rd , wherein the drain recess (22) is at least partially, preferably completely, covered by a filter medium, in particular a metal grid and / or metal fleece. Brake dust particle filter according to one of the preceding claims, wherein the housing (24) of the brake dust particle filter (20) is designed in several parts, in particular in two parts, for better assembly and maintenance. Brake dust particle filter according to one of the preceding claims, wherein a wall of the housing (24), in particular a radial peripheral side (28), has an inclination (β) in the direction of the lowermost point (U) in the vicinity of the lowermost point (U). Brake dust particle filter according to one of the preceding claims, wherein the housing (24) has at least one filter recess on the wall of the housing (24), in particular on the peripheral side (28) of the housing wall, with a filter medium. Brake dust particle filter according to one of the preceding claims, wherein the housing (24), in particular a wall of the housing (24) facing the housing interior (32), has structurally provided depressions, in particular flow grooves, and / or elevations, in particular guide ribs. Brake dust particle filter according to one of the preceding claims, wherein the housing (24), in particular the wall of the housing (24) facing the housing interior (32), has a special surface coating in order to prevent fluid and / or solids from sticking to the wall and / or to support the drainage on the wall. Arrangement (10) with a brake disc (12), a brake caliper (14), in particular a cover plate (16), and a brake dust particle filter, characterized in that the brake dust particle filter is a brake dust particle filter (20) according to one of the preceding claims, which is at least partially in a lower region of the brake disc (12) is arranged. Order after Claim 10 , characterized in that the cover plate (16) is part of a housing (24) of the brake dust particle filter (20). Order after Claim 10 or 11 in connection with one of the Claims 2 to 5 , The arrangement (10) having a rim (18) and the guide (30), the guide (30): a) extending predominantly axially to an inner rim edge (34) of the rim (18); and / or b) is directed towards the rim spokes (40) in order to enable targeted rinsing of the rim spokes (40).

Images