Particulate filter for a brake caliper and brake caliper assembly

Abstract

The present invention relates to a particulate filter (1) for a brake caliper (100), the brake caliper (100) comprising a caliper body (104) adapted to be arranged straddling a brake disc (101), and at least one brake pad (107, 108) supported either directly or indirectly by the caliper body (104), each brake pad (107, 108) comprising a respective support plate (109, 110) supporting respective friction material (111, 112); said brake disc (102) being adapted to rotate about a rotation axis (X-X), which defines a direction parallel to said axial direction (A-A), said brake disc (101) having a first braking surface (102) and a second braking surface (103) axially opposite to each other, said particulate filter (1) defining a radial direction (R-R) perpendicular to the axial direction (A-A), and a circumferential direction (C-C) centered in the rotation axis (X-X) perpendicular to both the axial direction (A-A) and the radial direction (R-R), wherein said caliper body (104) comprises a disc inlet portion (105) and a disc outlet portion (106) circumferentially opposite to each other, said particulate filter (1) comprising a support structure (2) configured to connect to the brake caliper (100), and a filtering assembly (3), supported by the support structure (2), wherein the filtering assembly (3) is configured to collect and trap brake particulate released during a braking action due to wear of the friction material (111, 112) and / or wear of the braking surfaces (102, 103) of the brake disc (101), connection means (66) configured to reversibly connect the filtering assembly (3) to the support structure (2), wherein the connection means (66) comprise at least one elastic element (67, 76), wherein said at least one elastic element (67, 76) is a respective wire spring.

Description

PARTICULATE FILTER FOR A BRAKE CALIPER AND BRAKE CALIPER ASSEMBLYDESCRIPTION

[0001] . Field of the invention

[0002] . The present invention relates to a particulate filter for a brake caliper.

[0003] . Background art

[0004] . Braking systems typically comprise a braking device and a rotor, e.g., a brake disc, where the braking device is configured to brake the rotor. The braking device, e.g., a brake caliper, comprises at least one thrust device and at least one braking element, such as a brake pad, which includes friction material configured to abut against a braking surface of the rotor. The interaction between the friction material of the brake pad and the rotor generates wear of the friction material and of the rotor by removing brake particulate matter from the friction material and from the rotor and releasing it into the environment. On the one hand, this particulate matter dispersed into the environment can pose a danger to human health, and on the other hand, can be deposited around the braking device, creating particulate stains which are difficult to clean.

[0005] . In order to obviate the problem of brake particulate dispersion, it is known to use particulate filters to be connected to a brake caliper so as to collect the particulate exiting the brake caliper. In particular, the known solutions involve connecting the particulate filter to a disc outlet portion of the caliper body so as to collect particulate matter generated during forward braking actions. For example, a solution of this type is known from EP2102522B1 .

[0006] . This solution only partially meets the problem of dust collection.

[0007] . In the industry, the need is felt to increase the brake particulate collection efficiency while keeping the overall size of the assembly comprising the brake caliper and particulate filter small, and avoiding hindering the dissipation of heat generated by the brake pads and the brake disc during the braking action.

[0008] . Solution

[0009] . It is an object of the present invention to provide a particulate filter and a brake caliper assembly, which allow obviating at least some of the drawbacks highlighted in the prior art.

[0010] . These and other objects are achieved by a particulate filter and a brake caliper assembly according to the independent claims.

[0011] . Some advantageous embodiments are the subject of the dependent claims.

[0012] . By virtue of the suggested solutions, a simplified reversible connection between the filtering assembly and the particulate filter support structure is possible by means of a wire spring.

[0013] . By virtue of the suggested solutions, the filtering assembly can be removed to bereplaced by reusing the wire spring to couple it to the support structure.

[0014] . By virtue of the suggested solutions, it is possible to retain the filtering assembly connected to the support structure, providing a frame for the filtering assembly, where the wire spring is elastically tightened to the support structure preventing it from detaching when using the brake caliper.

[0015] . By virtue of the suggested solutions, it is possible to remove the filtered assembly easily with a wire spring couplable to and uncouplable from the support structure without providing additional fixing elements with threaded portions, for example avoiding screws and fixing nuts.

[0016] . By virtue of the suggested solutions, it is possible to provide a particulate filter having a high collection efficiency of the particulate matter generated during the braking action.

[0017] . By virtue of the suggested solutions, it is possible to provide a highly versatile particulate filter, usable and interchangeable on right-side vehicle wheels and on left-side vehicle wheels.

[0018] . By virtue of the suggested solutions, it is possible to provide a particulate filter easily and reversibly connectable to the brake caliper, avoiding undesired movements of the particulate filter when using the vehicle and the brake caliper.

[0019] . Figures

[0020] . Further features and advantages of the particulate filter and the caliper assembly will become apparent from the following description of preferred embodiments thereof, given by way of non-limiting indication, with reference to the accompanying drawings, in which:

[0021] . - figure 1 is an axonometric view from the side opposite to the vehicle of a brake caliper assembly comprising a particulate filter according to the present invention connected to a brake caliper, in which the particulate filter covers the brake caliper on the side opposite to the vehicle, leaving uncovered the part of the brake caliper on the side towards the vehicle, in which the arrows depicted on the disc indicate the forward rotation direction of the disc;

[0022] . - figure 2 is an axonometric view from the vehicle side or from the vehicle of the brake caliper assembly shown in figure 1 ;

[0023] . - figure 3 is a plan view of the brake caliper assembly in the preceding figures perpendicular to the radial direction R-R from the brake disc side, i.e., from the radially inner side;

[0024] . - figure 4 is a plan view of the brake caliper assembly in the preceding figures perpendicular to the radial direction R-R from the opposite brake disc side, i.e., from the radially outer side;

[0025] . - figure 5 is a side view of the brake caliper assembly in the preceding figures from the disc inlet side perpendicular to the tangential direction T-T;

[0026] . - figure 6 is a side view of the brake caliper assembly in the preceding figures from thedisc outlet side perpendicular to the tangential direction T-T and opposite to the view in figure 5;

[0027] . - figure 7 is a vehicle-side front view of the brake caliper assembly in the preceding figures perpendicular to the axial direction A-A;

[0028] . - figure 8 is a partial section view of the brake caliper assembly in figure 7 with respect to a section plane perpendicular to the axial direction A-A, in which the radial coupling means of the particulate filter which connect the particulate filter to the brake caliper are visible;

[0029] . - figure 9 is a partial section view of the brake caliper assembly in figure 6 with respect to a section plane perpendicular to the tangential direction T-T, in which the anti-rotational axial coupling means of the particulate filter which connect the particulate filter to the brake caliper are visible;

[0030] . - figure 10 is an axonometric view from a side opposite to the vehicle of the particulate filter according to the present invention;

[0031] . - figure 11 is an axonometric view from a side axially opposite to the view in figure 10 of the particulate filter according to the present invention;

[0032] . - figure 12 is an axonometric view of the particulate filter in figure 11 along a section plane perpendicular to the axial direction at the filter material groove in which a fixing spring of the filtering material is arranged;

[0033] . - figure 13 is a side section view perpendicular to the axial direction of the particulate filter in figure 11 ;

[0034] . - figure 14 is an exploded axonometric view of the particulate filter in figure 10.

[0035] . Description of some preferred embodiments

[0036] . According to a general embodiment, a particulate filter for a brake caliper 100 is indicated by reference numeral 1 .

[0037] . The brake caliper 100 comprises a caliper body 104 adapted to be arranged straddling a brake disc 101 and at least one brake pad 107, 108 supported either directly or indirectly by the caliper body 104. Each brake pad 107, 108 comprises a respective support plate 109, 110 supporting respective friction material 111 , 112.

[0038] . The brake disc 102 is adapted to rotate about a rotation axis X-X which defines a direction parallel to said axial direction A-A. The brake disc 101 has a first braking surface 102 and a second braking surface 103 axially opposite to each other.

[0039] . The particulate filter 1 and / or the brake disc 102 defines a radial direction R-R perpendicular to the axial direction A-A, and a circumferential direction C-C perpendicular to both the axial direction A-A and the radial direction R-R. The circumferential direction C-C extends along a circumference centered in the rotation axis X-X. The particulate filter 1 and / or brake disc defines a straight tangential direction T-T perpendicular to both the axial direction A-A and the radial direction R-R.

[0040] . The caliper body 104 comprises a disc inlet portion 105 and a disc outlet portion 106 circumferentially and / or tangentially opposite to each other.

[0041] . The particulate filter 1 comprises a support structure 2 configured to connect to the brake caliper 100, and a filtering assembly 3, supported by the support structure 2. The filtering assembly 3 is configured to collect and trap brake particulate released during a braking action due to wear of the friction material 111 , 112 and / or wear of the braking surfaces 102, 103 of the brake disc 101.

[0042] . According to an aspect, the particulate filter 1 comprises connection means 66 configured to reversibly connect the filtering assembly 3 to the support structure 2, preferably the first filter 8 to the first cover 5.

[0043] . Advantageously, the connection means 66 comprise at least one elastic element 67, 76 configured to constrain the filtering assembly 3 to the support structure 2.

[0044] . Advantageously, said at least one elastic element 67, 68 comprises a wire spring.

[0045] . In an embodiment, each elastic element 67, 68 of the connection means 66 comprise at least one respective wire spring. In an embodiment, each elastic element 67, 68 of the connection means 66 is a respective wire spring. In an embodiment, the connection means 66 and / or each elastic element 67, 68 are made of elastic metal, preferably spring steel.

[0046] . In an embodiment, said at least one elastic element 67, 68 is configured to couple in at least two zones to the support structure 2 elastically retaining the filtering assembly 3 to the support structure 2.

[0047] . In an embodiment, the connection means 66 and / or said at least one elastic element 67, 76 are configured to form a frame or skeleton for the filtering assembly 3 so as to provide strength and mechanical support to the filtering assembly 3.

[0048] . In an embodiment, the support structure 2 comprises at least one of a first cover or disc outlet cover 5 configured to cover at least radially the disc outlet portion 106, and a second cover or disc inlet cover 6 configured to cover at least radially the disc inlet portion 105.

[0049] . In an embodiment, the support structure 2 comprises both said first cover 5 and said second cover 6, where the first cover 5 and the second cover 6 are circumferentially opposite to each other.

[0050] . In an embodiment, the filtering assembly 3 comprises at least one of a first filter 8 and a second filter 9, supported by the support structure 2.

[0051] . In an embodiment, the filtering assembly 3 comprises both said first filter 8 and said second filter 9.

[0052] . In an embodiment, the first filter 8 and the second filter 9 are made in separate pieces.

[0053] . In an embodiment, the first filter 8 and the second filter 9 are distinct from each other and not connected.

[0054] . In an embodiment, the first filter 8 is supported by the first cover 5 so that it faces the disc outlet portion 106 and the brake disc 101 .

[0055] . In an embodiment, a second filter 9 is supported by the second cover 6 so that it faces the disc inlet portion 105 and the brake disc 101.

[0056] . In an embodiment, the connection means 66 comprise a first elastic element 67 of said at least one elastic element 67, 76. In an embodiment, the first elastic element 67 is a wire spring.

[0057] . In an embodiment, the first elastic element 67 is configured to constrain the first filter 8 to the first cover 5.

[0058] . In an embodiment, the first elastic element 67 is configured to form a first filter frame or skeleton so as to provide strength and mechanical support to the first filter 8.

[0059] . In an embodiment, the first elastic element 67 is shaped so as to couple with at least one first elastic element first coupling end 68 and at least one first elastic element second coupling end 69, 70 to the first cover 5, preferably coupling at respective first elastic element seats 85, 86, 87, e.g., shaped holes or openings, made in the first cover 5, elastically opposing a detachment of the first filter 8 from the first cover 5. In an embodiment, the support structure 2, and / or the cover 4, and / or the first cover 5 delimit respective first elastic element seats 85, 86, 87 configured to receive a respective one of the at least a first elastic element first coupling end 68 and the at least a first elastic element second coupling end 69, 70.

[0060] . In an embodiment, the first elastic element 67 comprises a first elastic element body 71 which extends from the first elastic element first coupling end 68 to the at least one first elastic element second coupling end 69, 70. In an embodiment, the first elastic element body 71 is thread-like and / or is at least one wire of the first wire spring.

[0061] . In an embodiment, the first elastic element body 71 is configured to be inserted at least partially into a first filter seat or groove 73 made in the first filter 8 so that the first filter 8 is interposed at least partially between the first elastic element 67 and the support structure 2, preferably the first cover 5.

[0062] . In an embodiment, the first elastic element 67 is bifurcated . In an embodiment, the first elastic element 67 is bifurcated so as to be arranged straddling the brake disc. In an embodiment, the first elastic element body 71 comprises a first elastic element first branch 74 and a first elastic element second branch 75. In an embodiment, the first elastic element first branch 74 and the first elastic element second branch 75 are joined in a first elastic element bifurcation zone. In an embodiment, the first elastic element bifurcation zone is the first elastic element first end 68. In an embodiment, the first elastic element body 71 in the first elastic element first end 68 is folded so as to form a first elasticelement leg configured to couple to the support structure 2 and / or first cover 5. In an embodiment, the first elastic element body 71 in the first elastic element first end 68 is folded in a U. In an embodiment, the first elastic element body 71 in the first elastic element first end 68 is folded twice in sequence by an angle between 70 and 110 degrees, preferably of 90 degrees, so as to form the first elastic element leg folded in a U. In an embodiment, each first elastic element branch is at least one portion of the wire of the first wire spring.

[0063] . In an embodiment, the first elastic element first branch 74 extends from the first elastic element first end 68 to the first elastic element second coupling end 69. In an embodiment, the at least one first elastic element second coupling end 69, 70 comprises a first elastic element second coupling end 69 and a first elastic element further coupling end 70.

[0064] . In an embodiment, the first elastic element second branch 75 extends from the first elastic element first end 68 to a first elastic element further coupling end 70.

[0065] . In an embodiment, the first elastic element first end 68 is at least one fold of the first elastic element body 71 , i.e., it is a portion having at least one fold of the at least one wire of the first wire spring. In an embodiment, the first elastic element second coupling end 69 is one or at least one first free end of the first wire spring. In an embodiment, the first elastic element further coupling end 70 is one or at least one second free end of the first wire spring. In an embodiment, the first elastic element first seat 85 is shaped so as to accommodate the at least one fold which forms the first elastic element first end 68, for example it is an oval hole. In an embodiment, the first elastic element second seat 86 is shaped so as to accommodate the first elastic element second coupling end 69 which forms the first free end of the first wire spring, where the first elastic element second seat 86 is, for example, shaped and / or made as a cylindrical hole. In an embodiment, the first elastic element third seat 87 is shaped so as to accommodate the first elastic element further coupling end 70 which forms the second free end of the first wire spring, where the first elastic element third seat 87 is, for example, shaped and / or made as a cylindrical hole.

[0066] . In an embodiment, the connection means 66 are configured to reversibly connect the filtering assembly 3 to the support structure 2, preferably the second filter 9 to the second cover 6.

[0067] . In an embodiment, the connection means 66 comprise a second elastic element 76. In an embodiment, the second elastic element 76 is configured to constrain the second filter 9 to the second cover 6. In an embodiment, the second elastic element 76 is a second wire spring.

[0068] . In an embodiment, the second elastic element 76 is configured to form a second filter frame or skeleton so as to provide strength and mechanical support to the second filter 9.

[0069] . In an embodiment, the second elastic element 76 is shaped so as to couple with at least one second elastic element first coupling end 77 and at least one second elastic element second coupling end 78, 79 to the second cover 6, preferably coupling at respective second elastic elementseats 88, 89, 90 made in the second cover 6, elastically opposing a detachment of the second filter 9 from the second cover 6. In an embodiment, the support structure 2, and / or the cover 4, and / or the second cover 6 delimit respective second elastic element seats 88, 89, 90 configured to receive one respective of the at least one second elastic element first coupling end 77 and the at least a second elastic element second coupling end 78, 79.

[0070] . In an embodiment, the second elastic element 76 comprises a second elastic element body 80, which extends from the second elastic element first coupling end 77 to the at least one second elastic element second coupling end 78, 79. In an embodiment, the second elastic element body 80 is thread-like and / or is a wire of the wire spring.

[0071] . In an embodiment, the second elastic element body 80 is configured to be inserted at least partially into a second filter seat or groove 82 made in the second filter 9 so that the second filter 9 is interposed at least partially between the second elastic element 76 and the support structure 2, preferably the second cover 6.

[0072] . In an embodiment, the second elastic element body 80 is bifurcated. In an embodiment, the second elastic element 76 is bifurcated. In an embodiment, the second elastic element 76 is bifurcated so as to as to be arranged straddling the brake disc. In an embodiment, the second elastic element body 80 comprises a second elastic element first branch 83 and a second elastic element second branch 84. In an embodiment, the second elastic element first branch 83 and the second elastic element second branch 84 are joined in a second elastic element bifurcation zone. In an embodiment, the second elastic element bifurcation zone is the second elastic element first end 77. In an embodiment, the second elastic element body 80 is folded into the second elastic element first end 77 so as to form a second elastic element leg configured to couple to the support structure 2. In an embodiment, the second elastic element body 80 is folded in a U in the second elastic element first end 77. In an embodiment, the second elastic element body 80 is folded in the second elastic element first end 77 twice in sequence by an angle between 70 and 110 degrees, preferably of 90 degrees, so as to form the second elastic element leg folded in a U. In an embodiment, each second elastic element branch is thread-like and / or is a portion of the wire of the second wire spring.

[0073] . In an embodiment, the second elastic element first branch 83 extends from the second elastic element first coupling end 77 to the second elastic element second coupling end 78.

[0074] . In an embodiment, the second elastic element second branch 83 extends from the second elastic element first end 77 to the second elastic element further coupling end 79.

[0075] . In an embodiment, the second elastic element first end 77 is at least one fold of the second elastic element body 80, i.e., it is a portion having at least one fold of the at least one wire of the wire spring. In an embodiment, the second elastic element second coupling end 78 is one or at least one first free end of the second wire spring. In an embodiment, the second elastic elementfurther coupling end 79 is one or at least one second free end of the second wire spring.

[0076] . In an embodiment, the second elastic element first seat 88 is shaped so as to accommodate the at least one fold, which forms the second elastic element first end 77, for example it is an oval hole. In an embodiment, the second elastic element second seat 89 is shaped so as to accommodate the second elastic element second coupling end 78 which forms the first free end of the second wire spring, where the first elastic element second seat 89 is, for example, shaped as a cylindrical hole. In an embodiment, the first elastic element third seat 90 is shaped so as to accommodate the second elastic element further coupling end 79 which forms the second free end of the second wire spring, where the first elastic element third seat 90 is, for example, shaped as a cylindrical hole.

[0077] . In an embodiment, the first filter 8 delimits at least one first filter groove 73, 73', where the first elastic element 67 is at least partially inserted into the at least one first filter groove 73, 73' so that the first filter 8 is elastically tightened to the first cover 5.

[0078] . In an embodiment, the second filter 9 delimits at least one second filter groove 82, 82’, where the second elastic element 76 is at least partially inserted into the at least one second filter groove 82, 82’ so that the second filter 9 is elastically tightened to the second cover 6.

[0079] . In an embodiment, the first filter 8 comprises a first filter radially outer portion 34 and a first filter radially inner portion 35. In an embodiment, the first filter radially inner portion 35 comprises a first filter inner-side cantilevered portion 36, which extends in a cantilevered manner from the first filter radially outer portion 34 so as to face the first braking surface 102 either directly or indirectly. The first filter radially inner portion 35 comprises a first filter outer-side cantilevered portion 37, which extends in a cantilevered manner from the first filter radially outer portion 34 so as to face the second braking surface 103 either directly or indirectly. The first filter inner-side cantilevered portion 36 and the first filter outer-side cantilevered portion 37 are axially spaced apart from each other defining a free disc outlet space through which the brake disc is rotatable. The at least one first filter groove 73, 73' comprises a first filter first groove 73 and a first filter second groove 73'. The first filter outer-side cantilevered portion 37 delimits the first filter first groove 73. The first filter inner-side cantilevered portion 36 delimits the first filter second groove 73'. The first elastic element first branch 74 and / or the first elastic element body 71 is at least partially inserted into the first filter first groove 73 so as to mechanically reinforce the first filter outer-side cantilevered portion 37, where the first elastic element second branch 75 and / or the first elastic element body 71 is at least partially inserted into the first filter second groove 73' so as to mechanically reinforce the first filter inner-side cantilevered portion 36.

[0080] . In an embodiment, the second filter 9 comprises a second filter radially outer portion and a second filter radially inner portion. The second filter radially inner portion comprises a second filter inner-side cantilevered portion, which extends in a cantilevered manner from the second filterradially outer portion so as to face the first braking surface 102 either directly or indirectly. The second filter radially inner portion comprises a second filter outer-side cantilevered portion, which extends in a cantilevered manner from the second filter radially outer portion so as to face the second braking surface 103 either directly or indirectly. The second filter inner-side cantilevered portion and the second filter outer-side cantilevered portion are axially spaced apart from each other defining a free disc outlet space through which the brake disc is rotatable. The at least one second filter groove 82, 82’ comprises a second filter first groove 82 and a second filter second groove 82’. The second filter outer-side cantilevered portion delimits the second filter first groove. The second filter inner-side cantilevered portion delimits the second filter second groove. The second elastic element first branch and / or the second elastic element body is at least partially inserted into the second filter first groove so as to mechanically reinforce the second filter outer-side cantilevered portion, where the second elastic element second branch and / or the second elastic element body is at least partially inserted into the second filter second groove so as to mechanically reinforce the second filter inner-side cantilevered portion.

[0081] . In an embodiment, the first elastic element first branch 74 is shaped forming a U- shaped portion to sandwich the first filter outer-side cantilevered portion 37 by inserting into the first elastic element first groove 73'. The first elastic element second branch 75 is shaped forming a U- shaped portion to sandwich the first filter inner-side cantilevered portion 36 by inserting into the first elastic element second groove 73'.

[0082] . In an embodiment, the second elastic element first branch is shaped forming a U- shaped portion to sandwich the second filter outer-side cantilevered portion by inserting into the second elastic element first groove. The second elastic element second branch is shaped forming a U-shaped portion to sandwich the second filter inner-side cantilevered portion by inserting into the second elastic element second groove.

[0083] . In an embodiment, the first filter inner-side cantilevered portion 36 and the first filter outer-side cantilevered portion 37 are pleated portions of the first filter 8.

[0084] . In an embodiment, the second filter inner-side cantilevered portion and the second filter outer-side cantilevered portion are pleated portions of the second filter.

[0085] . In an embodiment, the first filter 8 comprises a first filter first retaining wall 58, preferably flat, configured to face the first braking surface 102, where the first filter first retaining wall 58 delimits the first filter inner-side cantilevered portion 36. The first filter 8 comprises a first filter second retaining wall 59, preferably flat, configured to face the second braking surface 103, where the first filter second retaining wall 59 delimits the first filter outer-side cantilevered portion 36.

[0086] . In an embodiment, the second filter comprises a second filter first retaining wall, preferably flat, configured to face the first braking surface, where the second filter first retaining walldelimits the second filter inner-side cantilevered portion. The second filter comprises a second filter second retaining wall 59, preferably flat, configured to face the second braking surface, where the second filter second retaining wall delimits the second filter outer-side cantilevered portion.

[0087] . Throughout the present description, radially inner and radially outer indicate elements of the particulate filter which, when observed from a view perpendicular to the axial direction, are arranged in external and non-superimposable positions with the brake disc and in internal and superimposable positions with the brake disc, respectively.

[0088] . In an embodiment, the support structure 2 comprises a central cover 7. In an embodiment, the central cover 7 is shaped so that it at least axially covers the caliper body 104 on the side opposite to a vehicle. In an embodiment, the first cover 5 is connected to the second cover 6 by means of the central cover 7 delimiting a radial window 10 for freely accessing at least partially the brake caliper 100 and the brake disc 101 in the radial direction R-R.

[0089] . It is thus possible to avoid hindering the dispersion of heat generated during braking while axially covering the brake caliper on the side opposite to the vehicle, and thus hindering the dispersion of particulate matter towards the outside of the vehicle and protecting the cleanliness of the axially outer, and thus visible, part of the wheel rim.

[0090] . In an embodiment, the support structure 2 comprises a brake caliper cover 4 seamlessly comprising the central cover 7, the first cover 5, and the second cover 6. The brake caliper cover 4 is shaped so as to cover the brake caliper 100 axially on the side opposite to the vehicle, leaving the brake caliper 100 free and axially accessible from the opposite side.

[0091] . By virtue of the provision of the cover, it is possible to axially cover the brake caliper on the opposite side of the vehicle so as to allow tuning the brake caliper and so as to integrate an aesthetic covering feature of the brake caliper into the particulate filter.

[0092] . In an embodiment, the first cover 5 and the second cover 6 are symmetrical with respect to a particulate filter symmetry plane parallel to the axial direction A-A and the radial direction R-R.

[0093] . In an embodiment, the first cover and the second cover are symmetrical with respect to a particulate filter symmetry plane parallel to the axial direction A-A and the radial direction R-R. In an embodiment, the first filter and the second filter are made of filtering materials adapted to be used in braking systems, for example the first filter and the second filter are paper filters, optionally reinforced with a polymer component.

[0094] . In an embodiment, the first cover 5 comprises a first cover first wall or first cover circumferential wall 11 . The first cover first wall 11 is shaped so as to be arranged radially outside the brake disc 101 and the brake caliper 100, preferably extending mainly along a direction parallel to the circumferential direction C-C, preferably over an arc of a circle.

[0095] . In an embodiment, the first cover 5 comprises a first cover second wall or first cover radial wall 12. The first cover second wall 12 is shaped so as to circumferentially face, either directly or indirectly, the disc outlet portion 106 of the brake caliper 100.

[0096] . In an embodiment, the first cover second wall 12 is folded with respect to the first cover first wall 11 forming a first filter concave collection portion facing the brake outlet portion 106 and, preferably, so that the first cover second wall 12 is radially subtended by the first cover first wall 11 .

[0097] . In an embodiment, the first filter 8 comprises a first filter first portion or first filter circumferential portion 32 and a first filter second portion or first filter radial portion 33. The first filter first portion 32 is shaped so as to be arranged across the brake disc 101 radially outside the brake disc 101 and the brake caliper 100. The first filter second portion 33 is shaped so as to be arranged across the brake disc 101 circumferentially facing the disc outlet portion 106 of the brake caliper 100, either directly or indirectly, without interfering with the brake disc or with the caliper body. The first filter first portion 32 extends along the first cover first wall 11 , preferably along a direction parallel to the circumferential direction C-C over an arc of a circle, projecting from the first cover first wall 11 towards said brake disc 101 and said brake caliper 100. The first filter second portion 33 extends at least partially along the first cover second wall 12, projecting from the first cover second wall 12 towards the disc outlet portion 106 of the brake caliper 100.

[0098] . In an embodiment, the first filter first portion 32 is connected to the first filter second portion 33 forming a substantially L-shaped profile and / or section in a view perpendicular to the axial direction A-A. Substantially L-shaped section means that the first filter portion and the second filter portion extend in the section either along a straight direction forming an L or along a curvilinear direction, e.g., corrugated or pleated, forming an L as a whole, i.e., a first segment along one direction and a second segment along a direction transverse or incident thereto.

[0099] . In an embodiment, the first filter 8 is reversibly coupled in at least one zone of the first cover first wall 11 and in at least two distinct zones of the first cover second wall 12.

[0100] . In an embodiment, the first cover 5 comprises a first cover radially outer portion 13, which is configured to be arranged radially outside the brake disc 101. The first cover radially outer portion 13 extends along an extension direction at least partially along a direction parallel to the circumferential direction C-C and then deviates towards the brake disc 101 , along a direction incident to the edge of the disc 109.

[0101] . In an embodiment, the first cover radially outer portion 13 is folded about a first fold axis parallel to the axial direction A-A, preferably where the first cover radially outer portion 13 is folded in a V forming a concave portion towards the brake disc 101 and the brake caliper 100.

[0102] . In an embodiment, the first filter 8 is reversibly coupled to the first cover radially outer portion 13.

[0103] . In an embodiment, the first filter 8 comprises a first filter radially outer portion 34. In an embodiment, the first filter radially outer portion 34 is configured to be arranged across the brake disc 101 and radially outside the brake disc 101 , avoiding interference with the caliper body and the brake disc. The first filter radially outer portion 34 extends along an extension direction at least partially along a direction parallel to the circumferential direction C-C and then deviates towards the brake disc 101 , along a direction incident to the edge of the disc 109.

[0104] . In an embodiment, the first filter radially outer portion 34 extends at least partially along the first cover radially outer portion 13 projecting from the first cover radially outer portion 13 towards the brake disc 101 and / or the disc outlet portion 106 of the brake caliper 100.

[0105] . In an embodiment, the first filter 8 comprises a first filter radially inner portion 35. The first filter radially inner portion 35 is at least partially radially inside the brake disc 101. In an embodiment, the first filter radially inner portion 35 extends in a cantilevered manner from the first filter radially outer portion 34 so as to face the first braking surface 102 or the second braking surface 103 either directly or indirectly.

[0106] . In an embodiment, the first filter radially outer portion 32 comprises the first filter first portion or first filter circumferential portion 32 and the first filter second portion or first filter radial portion 33.

[0107] . In an embodiment, the first filter radially inner portion 35 is a first filter third portion, which extends in a cantilevered manner from the first filter second portion 33 so as to face the first braking surface 102 or the second braking surface 103 either directly or indirectly.

[0108] . In an embodiment, the first filter radially inner portion 35 comprises a first filter inner- side cantilevered portion 36, which extends in a cantilevered manner from the first filter radially outer portion 34 and / or the first filter second portion 33 so that it faces the first braking surface 102 either directly or indirectly. In an embodiment, the first filter radially inner portion 35 comprises a first filter outer-side cantilevered portion 37, which extends in a cantilevered manner from the first filter radially outer portion 34 and / or the first filter second portion 33 so that it faces the second braking surface 103 either directly or indirectly. In an embodiment, the first filter inner-side cantilevered portion 36 and the first filter outer-side cantilevered portion 37 are axially spaced apart from each other defining a free disc outlet space through which the brake disc is rotatable. In an embodiment, a first filter section, parallel to the axial direction and to a direction parallel to the radial direction passing through the first filter radially inner portion 35, is U-shaped.

[0109] . In an embodiment, the first filter radially inner portion 35 radially subtends at least partially the disc outlet portion 106 of the brake caliper 100.

[0110] . In an embodiment, the first filter radially outer portion 34 and the first filter radially inner portion 35 are pleated portions.

[0111] . In an embodiment, each first filter portion 34, 35 comprises at least one respective first filter collection fold 44, 45, 46, i.e., facing an inner space delimited by the first cover 5.

[0112] . In an embodiment, the first filter radially outer portion 34 comprises at least one first filter radially outer collection fold 44, 45 folded with respect to a first filter radially outer plane A1 , B1 .

[0113] . In an embodiment, the first filter radially inner portion 35 comprises at least one first filter radially inner or third collection fold 46 folded with respect to a first filter radially inner or third plane C1.

[0114] . In an embodiment, each first filter plane A1 , B1 , C1 comprises a direction parallel to the axial direction A-A, each first filter radially outer plane A1 , B1 and the first filter third plane C1 are mutually incident planes.

[0115] . In an embodiment, the first filter first portion 32, the first filter second portion 33, and the first filter third portion 35 are pleated portions.

[0116] . In an embodiment, each first filter portion 32, 33, 35 comprises at least one respective collection fold 44, 45, 46, i.e., facing the inner space delimited by the first cover 5.

[0117] . In an embodiment, the first filter first portion 32 comprises at least one first filter first collection fold 44 folded with respect to a first filter first plane A1 .

[0118] . In an embodiment, the first filter second portion 33 comprises at least one first filter second collection fold 45 folded with respect to a first filter second plane B1 .

[0119] . In an embodiment, the first filter third portion 35 comprises at least one first filter third collection fold 46 folded with respect to a first filter third plane C1 .

[0120] . In an embodiment, each first filter plane A1 , B1 , C1 comprises a direction parallel to the axial direction A-A.

[0121] . In an embodiment, the first filter first plane A1 , the first filter second plane B1 , and the second filter third plane C1 are mutually incident planes.

[0122] . In an embodiment, the first filter radially outer portion 34 and the first filter radially inner portion 35 are connected by at least one first filter connection and collection fold 47, 48.

[0123] . In an embodiment, the first filter first portion 32 is connected to the first filter second portion 33 by a first filter first connection and collection fold 47.

[0124] . In an embodiment, the first filter second portion 33 and the first filter third portion 35 are connected by a first filter second connection and collection fold 48.

[0125] . In an embodiment, the first filter 8 comprises a first filter flat base wall 54 configured to conform to or at least partially follow the first cover first wall 11 and the first cover second wall 12 and / or the first cover radially outer portion 13 of the first cover 5.

[0126] . In an embodiment, the first filter radially outer portion 34 and the first filter radially inner portion 35, preferably each first filter portion 32, 33, 35, project from the first filter base wall 54.

[0127] . In an embodiment, the first filter 8 comprises a first filter first side wall 55 and a first filter second side wall 56 axially opposite to each other, which axially delimit the first filter radially outer portion 34 and the first filter radially inner portion 35, preferably each first filter portion 32, 33, 35.

[0128] . In an embodiment, the first filter 8 comprises a first filter containing portion 59, preferably delimited by flat walls, where said first filter containing portion 59 accommodates at least partially the first filter radially outer portion 34 and the first filter radially inner portion 35, preferably each first filter portion 32, 33, 35.

[0129] . In an embodiment, the first filter radially outer portion 34 and the first filter radially inner portion 35 project from the first filter base wall 54.

[0130] . In an embodiment, the first filter radially outer portion 34 and the first filter radially inner portion 35 delimit with the first filter base wall 54 said at least one first filter connection and collection fold 47, 48.

[0131] . In an embodiment, the first filter first portion 32 and the first filter second portion 33 delimit with the first filter base wall 54 said first filter first connection and collection fold 47.

[0132] . In an embodiment, the first filter second portion 33 and the first filter third portion 35 delimit with the first filter base wall 54 said second filter second connection and collection fold 48.

[0133] . In an embodiment, the first filter first side wall 55 and the first filter second side wall 56 project from axially opposite edges of the first filter base wall 54 forming a first filter containing portion 59, preferably delimited by flat walls.

[0134] . In an embodiment, said the first filter containing portion 59 accommodates at least partially the first filter radially outer portion 34 and the first filter radially inner portion 35. In an embodiment, said first filter containing portion 59 accommodates at least partially each first filter portion 32, 33, 35.

[0135] . In an embodiment, the first filter 8 comprises a first filter first retaining wall 58, preferably flat, configured to face the first braking surface 102 and which projects from a first edge of the first filter base wall 54 facing the first braking surface 102.

[0136] . In an embodiment, the first filter first retaining wall 58 delimits the first filter inner-side cantilevered portion 36, which is preferably pleated.

[0137] . In an embodiment, the first filter 8 comprises a first filter second retaining wall 59, preferably flat, configured to face the second braking surface 103 and which projects from a second edge of the first filter base wall 54 facing the second braking surface 103.

[0138] . In an embodiment, the first filter second retaining wall 59 delimits the first filter outerside cantilevered portion 36, which is preferably pleated.

[0139] . In an embodiment, the first filter second portion 33 is folded with respect to the first filter first portion 32 so that the first filter second portion 33 is radially subtended by the first filter firstportion 32.

[0140] . In an embodiment, the first filter 8 in a view or section perpendicular to the axial direction A-A forms, with the first filter radially outer portion 34 and the first filter radially inner portion 35, a substantially C-shaped concave profile towards the brake caliper 100.

[0141] . In an embodiment, the first filter radially outer portion 34 is folded about a fold axis parallel to the axial direction A-A, forming a concave portion towards the brake disc 101 and the brake caliper 100.

[0142] . In an embodiment, the first elastic element 72 is bifurcated so as to stiffen the first filter inner-side cantilevered portion 36 and the first filter outer-side cantilevered portion 37.

[0143] . In an embodiment, the first elastic element first branch 74 is shaped to sandwich the first filter inner-side cantilevered portion 36.

[0144] . In an embodiment, the first elastic element second branch 75 is shaped to sandwich the first filter outer-side cantilevered portion 37.

[0145] . In an embodiment, the second cover 6 comprises a second cover first wall or second cover circumferential wall 14. The second cover first wall 14 is shaped so as to be radially outside the brake disc 101 and the brake caliper 100, preferably extending mainly along a direction parallel to the circumferential direction C-C, over an arc of a circle.

[0146] . In an embodiment, the second cover 6 comprises a first cover second wall or second cover radial wall 15. The second cover second wall 15 is shaped so as to be arranged circumferentially facing, either directly or indirectly, the disc inlet portion 105 of the brake caliper 100.

[0147] . In an embodiment, the second cover second wall 15 is folded with respect to the second cover first wall 14 forming a second filter concave collection portion facing the disc inlet portion 105 and preferably so that the second cover second wall 15 is radially subtended by the second cover first wall 14.

[0148] . In an embodiment, the second filter 9 comprises a second filter first portion or second filter circumferential portion 38. In an embodiment, the second filter 9 comprises a second filter second portion or second filter radial portion 39. In a first embodiment, the second filter first portion 38 is shaped so as to be arranged across the brake disc 101 radially outside the brake disc 101 and the brake caliper 100. In an embodiment, the second filter first portion 38 extends along the second cover first wall 14, preferably along a direction parallel to the circumferential direction C-C over an arc of a circle, projecting from the second cover first wall 14 towards said brake disc 101 and said brake caliper 100. In an embodiment, the second filter second portion or second filter radial portion 39 is shaped so as to be arranged across the brake disc 101 circumferentially facing the disc inlet portion 105 of the brake caliper 100, either directly or indirectly. In an embodiment, the second filter second portion or second filer radial portion 39 extends at least partially along the second cover second wall15, projecting from the second cover second wall 15 towards the disc outlet portion 105 of the brake caliper 100. In an embodiment, the second filter first portion 38 and the second filter second portion 39 form a substantially L-shaped profile and / or section in a view perpendicular to the axial direction A-A.

[0149] . In an embodiment, the second cover radially outer portion 16 comprises the second cover first wall 14 and the second cover second wall 15.

[0150] . In an embodiment, the second filter 9 is reversibly coupled in one zone of the second cover first wall 14 and in two separate zones of the second cover second wall 15.

[0151] . In an embodiment, the second cover 6 comprises a second cover radially outer portion16, which is configured to be arranged radially outside the brake disc 101. The second cover radially outer portion 16 extends along an extension direction at least partially parallel to the circumferential direction C-C and then deviates towards the brake disc 101 , along a direction incident to the edge of the disc 109. In an embodiment, the second cover radially outer portion 16 is folded about a second fold axis parallel to the axial direction A-A. In an embodiment, the second cover radially outer portion 16 is folded in a V forming a concave portion facing the brake disc 101 and the brake caliper 100. In an embodiment, the first filter 9 is reversibly coupled to the second cover radially outer portion 16.

[0152] . In an embodiment, the second filter 9 comprises a second filter radially outer portion 40 which is configured to be arranged across the brake disc 101 and radially outside the brake disc 101. In an embodiment, the second filter radially outer portion 40 extends along an extension direction at least partially along a direction parallel to the circumferential direction C-C and then deviates towards the brake disc 101 , along a direction incident to the edge of the disc 109.

[0153] . In an embodiment, the second filter radially outer portion 40 extends at least partially along the second cover radially outer portion 16 projecting from the second cover radially outer portion 16 towards the brake disc 101 and / or the disc inlet portion 105 of the brake caliper 100.

[0154] . In an embodiment, the second filter 9 comprises a second filter third portion or second filter radially inner portion 41 . The second filter radially inner portion 41 is at least partially radially inside the brake disc 101 .

[0155] . In an embodiment, the second filter radially inner portion 41 is a second filter third portion, which extends in a cantilevered manner from the second filter second portion 39 and / or the second filter radially outer portion so as to face the first braking surface 102 or the second braking surface 103 either directly or indirectly.

[0156] . In an embodiment, the second filter third portion 41 comprises a second filter inner-side cantilevered portion 42, which extends in a cantilevered manner from the second filter second portion 39 and / or the second filter radially outer portion 40 so as to face the first braking surface 102 either directly or indirectly.

[0157] . In an embodiment, the second filter third portion 41 comprises a second filter outer-side cantilevered portion 43, which extends in a cantilevered manner from the second filter second portion 39 and / or the second filter radially outer portion 40 so as to face the second braking surface 103 either directly or indirectly. In an embodiment, the second filter inner-side cantilevered portion 42 and the second filter outer-side cantilevered portion 43 are axially spaced apart from each other defining a free disc inlet space through which the brake disc 100 is rotatable.

[0158] . In an embodiment, the second filter third portion 41 radially subtends at least partially the disc inlet portion 105 of the brake caliper 100.

[0159] . In an embodiment, the second filter radially outer portion 40 comprises the second filter first portion 38 and the second filter second portion 39.

[0160] . In an embodiment, the second filter radially outer portion 40 and the second filter radially inner portion 41 are pleated portions.

[0161] . In an embodiment, each second filter portion 40, 41 comprises at least one respective collection fold 49, 50, 51 , i.e., facing an inner space delimited by the second cover 6.

[0162] . In an embodiment, the second filter radially outer portion 40 comprises at least one second filter radially outer collection fold 49, 50 folded with respect to a second filter radially outer plane A2, B2.

[0163] . In an embodiment, the second filter radially inner portion 40 comprises at least one second filter radially inner or third collection fold 51 folded with respect to a second filter radially inner plane or third plane C2.

[0164] . In an embodiment, each second filter plane A2, B2, C2 comprises a direction parallel to the axial direction A-A. In an embodiment, each second filter radially outer plane A2, B2 and the second filter third plane C2 are mutually incident planes. In an embodiment, the second filter radially outer portion 40 and the second filter radially inner portion 41 are connected by at least one second filter connection and collection fold 52, 53.

[0165] . In an embodiment, the second filter first portion 38, the second filter second portion 39, and the second filter third portion 41 are pleated portions.

[0166] . In an embodiment, each first filter portion 38, 39, 41 comprises at least one respective collection fold 49, 50, 51 , i.e., facing the inner space delimited by the second cover 6.

[0167] . In an embodiment, the second filter first portion 38 comprises at least one second filter first collection fold 49 folded with respect to a second filter first plane A2.

[0168] . In an embodiment, the second filter second portion 39 comprises at least one second filter second collection fold 50 folded with respect to a second filter second plane B2.

[0169] . In an embodiment, the second filter third portion 41 comprises at least one second filter third collection fold 51 folded with respect to a second filter third plane C2.

[0170] . In an embodiment, each second filter plane A2, B2, C2 comprises a direction parallelto the axial direction A-A.

[0171] . In an embodiment, the second filter first plane A2, the second filter second plane B2, and the second filter third plane C2 are mutually incident planes.

[0172] . In an embodiment, the second filter first portion 38 is connected to the second filter second portion 39 by a second filter first connection and collection fold 52.

[0173] . In an embodiment, the second filter second portion 39 and the second filter third portion 41 are connected by a second filter second connection and collection fold 53.

[0174] . In an embodiment, the second filter 9 comprises a second filter base wall 60 configured to conform to or at least partially follow the profile of the second cover.

[0175] . In an embodiment, the second filter 9 comprises a second filter first side wall 61 and a second filter second side wall 62.

[0176] . In an embodiment, the second filter 9 comprises a second filter containing portion 65, preferably delimited by flat walls.

[0177] . In an embodiment, the second filter radially outer portion 40 and the second filter radially inner portion 41 project from the second filter base wall 60.

[0178] . In an embodiment, the second filter radially outer portion 40 and the second filter radially inner portion 41 delimit with the second filter base wall 60 said at least one second filter connection and collection fold 49, 50.

[0179] . In an embodiment, each second filter portion 39, 38, 41 projects from the second filter base wall 60.

[0180] . In an embodiment, the second filter first portion 38 and the second filter second portion 39 delimit with the second filter base wall 60 said second filter first connection and collection fold 49.

[0181] . In an embodiment, the second filter second portion 39 and the second filter third portion 41 delimit with the second filter base wall 60 said second filter second connection and collection fold 50.

[0182] . In an embodiment, the second filter first side wall 61 and the second filter second side wall 62 are preferably perpendicular to the axial direction A-A, preferably project from axially opposite edges of the second filter base wall 60 forming a second filter containing portion 65, preferably delimited by flat walls.

[0183] . In an embodiment, said the second filter containing portion 65 accommodates at least partially the second filter radially outer portion 40 and the second filter radially inner portion 41 .

[0184] . In an embodiment, said second filter containing portion 65 accommodates at least partially each second filter portion 38, 39, 41 .

[0185] . In an embodiment, the second filter 9 comprises a second filter first retaining wall 63, preferably flat, configured to face the second braking surface 103 and which projects from a first edgeof the second filter base wall 60 facing the second braking surface 103, where the second filter first retaining wall 63 delimits the second filter outer-side cantilevered portion 43, which is preferably pleated.

[0186] . In an embodiment, the second filter 9 comprises a second filter second retaining wall 64, preferably flat, configured to face the first braking surface 102 and which projects from a second edge of the second filter base wall 60 facing the second braking surface 102, where the second filter second retaining wall 64 delimits the second filter inner-side cantilevered portion 42, which is preferably pleated.

[0187] . In an embodiment, the second filter second portion 39 is folded with respect to the second filter first portion 38 so that the second filter second portion 39 is radially subtended by the second filter first portion 38.

[0188] . In an embodiment, the second filter first portion 38 is connected to the second filter second portion 39 forming a substantially L-shaped profile and / or section in a view perpendicular to the axial direction A-A.

[0189] . In an embodiment, the second filter 9 in a view or section perpendicular to the axial direction A-A forms, with the second filter radially outer portion 40 and the second filter radially inner portion 41 , a substantially C-shaped concave profile towards the brake caliper 100.

[0190] . In an embodiment, the second filter radially outer portion 40 is folded about a fold axis parallel to the axial direction A-A, forming a concave portion towards the brake disc 101 and the brake caliper 100.

[0191] . In an embodiment, the second elastic element 80 is bifurcated so as to stiffen the second filter inner-side cantilevered portion 42 and the second filter outer-side cantilevered portion 43.

[0192] . In an embodiment, the second elastic element first branch 83 is shaped to sandwich the second filter outer-side cantilevered portion 43.

[0193] . In an embodiment, the first elastic element second branch 75 is shaped to sandwich the second filter inner-side cantilevered portion 42.

[0194] . It is thus possible to respond to the need felt in the industry to make particulate filters for brake calipers provided with high particulate collection efficiency.

[0195] . The particulate filter 1 is thus configured to collect the particulate matter exiting the brake caliper 100 from both the disc inlet portion 105 and the disc outlet portion 106.

[0196] . The particulate filter 1 is thus configured to be connected to either left-side brake calipers or right-side brake calipers indifferently.

[0197] . Larger amounts of particulate matter can be collected by virtue of the provision of two circumferentially and / or tangentially opposite filters, i.e., the first filter 8 and the second filter 9.

[0198] . By virtue of the provision of two circumferentially and / or tangentially opposite filters,i.e., first filter 8 and second filter 9, it is possible to limit the replacement of the particulate filter by reversing the position of the right-side particulate filter with the left-side particulate filter during maintenance and pad change, so as to reverse the position of the first filter and the second filter, reversing the forward braking and reverse braking particulate collection function thereof, and replace the first and second filters only at a subsequent pad change.

[0199] . According to an embodiment, the support structure 2 comprises a brake caliper cover 4 adapted to cover the brake caliper along the axial direction A-A on one side opposite to a vehicle and at least partially along the radial direction R-R. The connection means 66 are configured to connect the filtering assembly to the brake caliper cover 4.

[0200] . In an embodiment, the brake caliper cover 4 comprises said first cover or disc outlet cover 5 and said second cover or disc inlet cover 6.

[0201] . In an embodiment, the support structure 2 further comprises first fixing means 17 configured to connect the brake caliper cover 4 to the brake caliper 100 in at least one radially external position of the brake caliper. The support structure 2 further comprises second fixing means 18 configured to connect the cover 4 to the brake caliper 100 in at least one radially internal position of the brake caliper, preventing a rotation of the cover 4 with respect to the first fixing means 17.

[0202] . By virtue of the provision of first fixing means 17 and second fixing means 18 which connect the particulate filter 1 to the brake caliper 100 in at least two radially different and preferably axially different positions, it is possible to ensure a safe, anti-rotational connection with the particulate filter 1 .

[0203] . By virtue of the provision of first fixing means 17 and second fixing means 18 which connect the particulate filter 1 to the brake caliper 100, it is possible to ensure an effective, reversible connection which is resistant to vibrations and to a variety of driving conditions, while ensuring simple and rapid intervention by an operator to separate the particulate filter from the brake caliper, preferably without the need for specific tools to remove and connect the particulate filter from / to the brake caliper.

[0204] . It is thus possible to respond to the need felt in the industry to provide particulate filters for brake calipers which are easily connectable to the brake caliper while being easily detachable from the brake caliper, preferably avoiding the use of tools to separate the particulate filter from the brake caliper, without affecting the safety and durability of the connection of the particulate filter with the brake caliper, which receives the stresses of the road surface in an unmitigated manner since it is an unsprung mass of the vehicle.

[0205] . In an embodiment, the support structure 2 comprises a first cover or disc outlet cover 5 configured to cover at least radially the disc outlet portion 106, and the filtering assembly 3 comprises a first filter 8 connected to the first cover 5. The first filter 8 comprises a first filter first portion or firstfilter circumferential portion 32 and a first filter second portion or first filter radial portion 33. The first filter first portion 32 is shaped so as to be arranged radially outside the brake disc 101 and the brake caliper 100, preferably extending mainly along a direction parallel to the circumferential direction C-C, preferably over an arc of a circle. The first filter second portion 33 is shaped so as to be arranged circumferentially facing the disc outlet portion 106 of the brake caliper 100 either directly or indirectly. The first filter second portion 33 is folded with respect to the first filter first portion 32 about a folding axis parallel to the axial direction A-A so as to form a first filter concave collection portion facing the disc outlet portion 106.

[0206] . It is thus possible to respond to the need felt in the industry to make particulate filters for brake calipers provided with high particulate collection efficiency.

[0207] . By virtue of the provision of at least two filter portions, radially outside the brake disc and the disc outlet portion 106, folded with respect to each other so as to form the first filter concave collection portion, it is possible to collect a high amount of particulate matter generated during braking and dispersed circumferentially and radially at the outlet of the disc outlet portion 106.

[0208] . In an embodiment, the support structure 2 comprises a brake caliper cover 4 comprising the first cover 5 and the second cover 6 connected to each other, first fixing means 17 configured to connect the brake caliper cover 4 to the brake caliper 100 in at least one radially external position the brake caliper, and second fixing means 18 configured to connect the cover 4 to the brake caliper 100 in at least one radially internal position of the brake caliper, preventing a rotation of the cover 4 with respect to the first fixing means 17.

[0209] . In an embodiment, the first fixing means 17 are configured to reversibly connect the cover 4 to the brake caliper 100. In an embodiment, the first fixing means 17 are snap-on fixing elements. In an embodiment, the first fixing means 17 are configured to connect the cover 4 to the brake caliper 100 along the radial direction R-R or a direction parallel thereto.

[0210] . In an embodiment, the first fixing means 17 comprise a first fixing element 19 and a second fixing element 20 connected to the first cover 5 and the second cover 6, respectively, projecting at least along the radial direction R-R or a direction parallel thereto towards the brake caliper 100 avoiding interference with the first filter 8 and / or the second filter 9. In an embodiment, the first fixing element 19 is configured to be connected to a first fixed portion of the caliper body of the brake caliper 100, such as a disc outlet axial connection bridge 116 of the caliper body 104 or a bracket 114 of the caliper body 104, for example. In an embodiment, the second fixing element 20 is configured to be connected to a second fixed portion of the brake caliper 100, such as a disc inlet connection bridge 117 of the caliper body 104 or a bracket 114 of the caliper body 104, for example.

[0211] . In an embodiment, the second fixing means 18 are configured to form at least one anti- rotational constraint with a further fixed portion of the brake caliper 100, such as an elongated portion118 opposite to the vehicle side of the caliper body 104 or of a bracket 114 of the caliper body 104, for example, so as to as to prevent a rotation of the brake caliper cover 4 about a first rotation axis a-a parallel to the axial direction A-A and / or a rotation about a second rotation axis r-r parallel to the radial direction R-R and / or a rotation about a third rotation axis t-t parallel to a tangential direction T-T perpendicular to the axial direction A-A and the radial direction R-R.

[0212] . In an embodiment, the first cover 5 and the second cover 6 are connected by means of a first circumferential bridge or radially outer bridge which at least partially covers the brake caliper 100 and a second circumferential bridge or radially inner bridge which axially covers and faces the brake caliper 100 and the brake disc 101 .

[0213] . In an embodiment, the first fixing means 17 project from the first cover 5 and the second cover 6, respectively, at least in the radial direction R-R.

[0214] . In an embodiment, the second fixing means 18 project from the radially inner bridge at least in the axial direction A-A.

[0215] . In an embodiment, each first fixing means 17 comprises a connection portion 21 connected or connectable to the cover 4, at least one coupling arm 22, 23 and at least one backing arm 24, where each coupling arm 22, 23 is configured to couple to a respective coupling seat of the brake caliper 100, where the backing arm 24 is configured to abut against a respective backing portion by elastically biasing each coupling arm 22, 23 to retain the respective coupling seat.

[0216] . In an embodiment, the at least one coupling arm 22, 23 is a first coupling arm 22 and a second coupling arm 23 configured to couple as an undercut to respective coupling seats.

[0217] . In an embodiment, each coupling arm 22, 23 comprises a respective tongue 25, 26 configured to couple as an undercut to the respective coupling seat.

[0218] . In an embodiment, each tongue 25, 26 is obtained by cutting and folding an end portion of the respective coupling arm 22, 23. In an embodiment, each backing arm 24 is obtained by cutting and folding a central portion of the respective coupling arm 22, 23. In an embodiment, the first coupling arm 22, the connection portion 21 and the second coupling arm 23 form a U- or V-shaped profile in a view perpendicular to the axial direction A-A.

[0219] . In an embodiment, each first fixing means 17 is a leaf spring. In an embodiment, each first fixing means 17 is a leaf spring of the clip type. In an embodiment, each first fixing means 17 is connected to the support structure and / or the respective cover by riveting or welding or gluing.

[0220] . In an embodiment, the second fixing means 18 comprise at least one anti-rotational element 27, 28 configured to abut as an undercut with the caliper body further fixed portion, preferably with the elongated element radially inner portion 118. In an embodiment, each anti-rotational element 27, 28 is configured to embrace the caliper body further fixed portion, preferably the elongated element radially inner portion 118, and prevent the rotation of the support structure 2 and / or theparticulate filter.

[0221] . In an embodiment, the at least one anti-rotational element 27, 28 comprises a first anti- rotational element 27 and a second anti-rotational element 28 configured to abut as an undercut with the caliper body further fixed portion, preferably with the elongated element radially inner portion 118 in two tangentially spaced zones.

[0222] . In an embodiment, each anti-rotational element 27, 28 comprises a respective anti- rotational arm 29, which projects in a cantilevered manner from the brake caliper cover 4 towards the brake caliper 100.

[0223] . In an embodiment, each anti-rotational arm 29 extends from an attachment portion 30 connected to the brake caliper cover 4 to an abutment portion 31 configured to abut against the caliper body further fixed portion, preferably with the elongated element radially inner portion 118.

[0224] . In an embodiment, the abutment portion 31 is folded so as to abut against a first brake caliper surface and a second brake caliper surface connected to each other in a substantially orthogonal manner.

[0225] . In an embodiment, the first brake caliper surface is orthogonal and / or incident to a direction parallel to the radial direction R-R adapted to form a radial abutment with the second fixing means 18, where the second brake caliper surface is orthogonal and / or incident to a direction parallel to the axial direction A-A adapted to form an axial abutment with the second fixing means 18.

[0226] . In an embodiment, the abutment portion 31 is folded so as to abut axially and radially against the caliper body further fixed portion, preferably with the elongated element radially inner portion 118.

[0227] . In an embodiment, the abutment portion 31 is substantially L-folded forming an L- shaped section in a plane comprising the axial direction A-A and the radial direction R-R.

[0228] . In an embodiment, each second fixing means 18 is a folded sheet metal or leaf spring. In an embodiment, each second fixing means 18 is connected to the support structure 2 and / or to the cover by riveting or welding or gluing.

[0229] . The present invention further relates to a brake caliper assembly 200 comprising a brake caliper 100 and a particulate filter 1 according to one or more of the embodiments and / or aspects of the present invention, connected to the brake caliper 100.

[0230] . In an embodiment, the brake caliper 100 comprises a caliper body 104 adapted to be arranged straddling a brake disc 101 and at least one brake pad 107, 108 supported either directly or indirectly by the caliper body 104.

[0231] . In an embodiment, the caliper body 104 defines a radial direction R-R perpendicular to the axial direction A-A, and a circumferential direction C-C perpendicular to both the axial direction A- A and the radial direction R-R. The circumferential direction C-C extends along a circumferencecentered in the rotation axis X-X. The caliper body 104 defines a straight tangential direction T-T, perpendicular to both the axial direction A-A and the radial direction R-R.

[0232] . In an embodiment, the caliper body 104 comprises a disc inlet portion 105 and a disc outlet portion 106 circumferentially and / or tangentially opposite to each other.

[0233] . In an embodiment, the caliper body 104 comprises a first elongated element in the circumferential and / or tangential direction and a second elongated element in the circumferential and / or tangential direction connected axially by at least one central connection bridge 115 and / or a disc outlet connection bridge 116 and / or a disc inlet connection bridge 117.

[0234] . In an embodiment, the particulate filter 1 is removably connected to the disc outlet connection bridge 116 and the disc inlet connection bridge 117.

[0235] . In an embodiment, the disc outlet connection bridge 116 comprises at least one disc outlet coupling seat 119 and one disc outlet backing portion 121. In an embodiment, the disc inlet connection bridge 117 comprises at least one disc inlet coupling seat 121 and one disc inlet backing portion 122. In an embodiment, the at least one disc outlet coupling seat 119 and the at least one disc inlet coupling seat 121 face radially in the direction of the brake disc, and the disc outlet backing portion 121 and the disc inlet backing portion 122 face in a radially external direction opposite to the brake disc. In an embodiment, each disc outlet coupling seat 119 and the disc outlet backing portion 120 are configured to be coupled by respective first fixing means 17 of the particulate filter 1. In an embodiment, each disc inlet coupling seat 121 and the disc inlet backing portion 122 are configured to be coupled by a respective first fixing means 17 of the particulate filter 1 .

[0236] . In an embodiment, the first elongated element is a caliper body portion arranged on the side opposite to the vehicle. In an embodiment, the first elongated element comprises an elongated element radially inner portion 118. In an embodiment, the particulate filter 1 is removably connected to the elongated element radially inner portion 118.

[0237] . In an embodiment, the elongated element radially inner portion 118 is delimited in the radially external direction by a first brake caliper surface 124, and in the axially internal direction, i.e., towards the brake disc, by a second brake caliper surface 123. In an embodiment, the first brake caliper surface 124 is orthogonal and / or incident to a direction parallel to the radial direction R-R and adapted to form a radial abutment with the second fixing means 18 of the particulate filter. In an embodiment, the second brake caliper surface 123 is orthogonal and / or incident to a direction parallel to the axial direction A-A and adapted to form an axial abutment with the second fixing means 18 of the particulate filter.

[0238] . In an embodiment, the brake caliper 100 is of the floating type. In an embodiment, the caliper body 101 comprises a caliper body fixed portion or bracket 114 and a caliper body floating portion 113, where the caliper body floating portion 113 is supported in a sliding manner by the caliperbody fixed portion 114. In an embodiment, each of the caliper body fixed portion and the caliper body floating portion comprises a respective first elongated portion and a respective second elongated portion. In an embodiment, the fixed portion 114 comprises a fixed portion first elongated portion and a fixed portion second elongated portion, where the fixed portion first elongated portion comprises the elongated element radially inner portion 118. In an embodiment, the fixed portion first elongated portion and the respective fixed portion second elongated portion are axially connected by the disc outlet connection bridge 116 and the disc inlet connection bridge 117. In an embodiment, the disc outlet connection bridge 116 and the disc inlet connection bridge 117 each delimit a respective axial cavity in which a respective sliding connection guide, to which the caliper body floating portion is fixed, is housed. In an embodiment, the caliper body floating portion 113 comprises a floating portion first elongated portion and a floating portion second elongated portion, where the floating portion first elongated portion and the floating portion second elongated portion are axially connected to each other by the caliper body central connection bridge 115.

[0239] . LIST OF REFERENCE SIGNSParticulate filter support structure filtering assembly brake caliper cover first cover or disc outlet cover second cover or disc inlet cover central cover first filter second filter radial window first cover first wall or first cover circumferential wall first cover second wall or first cover radial wall first cover radially outer portion second cover first wall or second cover circumferential wall second cover second wall or second cover radial wall second cover radially outer portion first fixing means second fixing means first fixing element second fixing element , 21’ connection portion , 22’ first coupling arm , 23’ second coupling arm , 24’ backing arm , 25’ first coupling arm end tongue , 26’ second coupling arm end tongue first anti-rotational element second anti-rotational element , 29’ anti-rotational arm , 30’ attachment portion , 31 ’ abutment portion first filter first portion or first filter circumferential portionfirst filter second portion or first filter radial portion first filter radially outer portion first filter third portion or first filter radially inner portion first filter inner-side cantilevered portion first filter outer-side cantilevered portion second filter first portion or second filter circumferential portion second filter second portion or second filter radial portion second filter radially outer portion second filter third portion or second filter radially inner portion second filter inner-side cantilevered portion second filter outer-side cantilevered portion first filter first collection fold first filter second collection fold , 46’ first filter third collection fold first filter first collection and connection fold , 48’ first filter second collection and connection fold second filter first collection fold second filter second collection fold second filter third collection fold second filter first collection and connection fold second filter second collection and connection fold first filter base wall first filter first side or axially outer wall first filter second side or axially outer wall first filter first retaining or axially inner wall first filter second retaining or axially inner wall first filter containing portion second filter base wall second filter first side or axially outer wall second filter second side or axially outer wall second filter first retaining or axially inner wall second filter second retaining or axially inner wall second filter containing portionconnection means first elastic element first elastic element first coupling end first elastic element second coupling end first elastic element further coupling end first elastic element body first filter seat or first groove ’ first filter seat or second groove first elastic element first branch first elastic element second branch second elastic element second elastic element first coupling end second elastic element second coupling end second elastic element further coupling end second elastic element body second filter seat or first groove ’ second filter seat or second groove second elastic element first branch second elastic element second branch first elastic element first seat first elastic element second seat first elastic element third seat second elastic element first seat second elastic element second seat second elastic element third seat 0 brake caliper 1 brake disc 2 first braking surface 3 second braking surface 4 caliper body 5 disc inlet portion 6 disc outlet portion107 first brake pad108 second brake pad109 first pad support plate110 second pad support plate111 first pad friction material112 second pad friction material113 caliper body floating portion114 caliper body fixed portion or bracket115 caliper body central connection bridge116 caliper body disc outlet connection bridge117 caliper body disc inlet connection bridge118 elongated element radially inner portion119 disc outlet coupling seat120 disc inlet coupling seat121 disc outlet backing portion122 disc inlet backing portion200 brake caliper assemblyX-X rotation axisA-A axial directionR-R radial directionC-C circumferential directionT-T circumferential direction a-a first rotation axis or axial rotation axis r-r second rotation axis or radial rotation axis t-t third rotation axis or tangential rotation axisA1 first filter first fold planeB1 first filter second fold planeC1 first filter third fold planeA2 second filter first fold planeB2 second filter second fold planeC2 second filter third fold plane

Claims

CLAIMS1. A particulate filter (1 ) for a brake caliper (100), the brake caliper (100) comprising a caliper body (104) adapted to be arranged straddling a brake disc (101 ), and at least one brake pad (107, 108) supported either directly or indirectly by the caliper body (104), each brake pad (107, 108) comprising a respective support plate (109, 110) supporting respective friction material (111 , 112); said brake disc (102) being adapted to rotate about a rotation axis (X-X), which defines a direction parallel to said axial direction (A-A), said brake disc (101 ) having a first braking surface (102) and a second braking surface (103) axially opposite to each other, said particulate filter (1 ) defining a radial direction (R-R) perpendicular to the axial direction (A-A), and a circumferential direction (C-C) centered in the rotation axis (X-X) perpendicular to both the axial direction (A-A) and the radial direction (R-R), wherein said caliper body (104) comprises a disc inlet portion (105) and a disc outlet portion (106) circumferentially opposite to each other, said particulate filter (1 ) comprising:- a support structure (2) configured to connect to the brake caliper (100), and- a filtering assembly (3), supported by the support structure (2), wherein the filtering assembly (3) is configured to collect and trap brake particulate released during a braking action due to wear of the friction material (111 , 112) and / or wear of the braking surfaces (102, 103) of the brake disc (101 ),- connection means (66) configured to reversibly connect the filtering assembly (3) to the support structure (2), characterized in that the connection means (66) comprise at least one elastic element (67, 76), wherein said at least one elastic element (67, 76) is a respective wire spring.

2. A particulate filter (1) according to the preceding claim, wherein said at least one elastic element (67, 68) is configured to couple in at least two zones to the support structure (2) elastically retaining the filtering assembly (3) to the support structure (2), and / or wherein said at least one elastic element (67, 76) is configured to form a frame or skeleton for the filtering assembly (3) so as to provide strength and mechanical support to the filtering assembly (3).

3. A particulate filter (1 ) according to any one of the preceding claims, wherein the support structure (2) comprises a first cover or disc outlet cover (5) configured to cover at least radially the disc outlet portion (106), wherein the filtering assembly (3) comprises a first filter (8), wherein said connection means (66) comprise a first elastic element (67) of said at least one elastic element (67, 76), wherein said first elastic element (67) is a first wire spring, wherein said first elastic element (67) reversibly connects and / or constrains the first filter (8) to the firstcover (5).

4. A particulate filter (1) according to the preceding claim, wherein the first elastic element (67) comprises at least one first elastic element first coupling end (68) and at least one first elastic element second coupling end (69, 70), wherein the first cover (5) delimits respective first elastic element seats (85, 86, 87) configured to receive one respective of the at least one first elastic element first coupling end (68) and the at least one first elastic element second coupling end (69, 70), wherein the first elastic element (67) is shaped so as to couple with said at least one first elastic element first coupling end (68) and said at least one first elastic element second coupling end (69, 70) to the first cover (5), in the respective first elastic element seats (85, 86, 87).

5. A particulate filter (1) according to the preceding claim, wherein the first elastic element (67) comprises a first elastic element body (71 ) which extends from the first elastic element first coupling end (68) to the at least one first elastic element second coupling end (69, 70), wherein the first elastic element body (71 ) is thread-like and / or is at least one wire of the first wire spring.

6. A particulate filter (1 ) according to any one of the preceding claims 3 to 5, wherein the first elastic element (67) is bifurcated.

7. A particulate filter (1 ) according to claims 5 and 6, wherein the first elastic element body (71 ) comprises a first elastic element first branch (74) and a first elastic element second branch (75), wherein the first elastic element first branch (74) and the first elastic element second branch (75) are joined in the first elastic element first end (68), wherein the first elastic element body (71 ) in the first elastic element first end (68) is folded so as to form a first elastic element leg configured to couple to the support structure (2) and / or the first cover (5), wherein the at least one first elastic element second coupling end (69, 70) comprises a first elastic element second coupling end (69) and a first elastic element further coupling end (70), wherein the first elastic element first branch (74) extends from the first elastic element first end (68) to the first elastic element second coupling end (69), wherein the first elastic element second branch (75) extends from the first elastic element first end (68) to the first elastic element further coupling end (70).

8. A particulate filter (1) according to the preceding claim, wherein the first elastic element first end (68) is at least one fold of the first elastic element body (71 ), for example where the first elastic element first end (68) is a U-shaped folded portion of the first elastic element body (71), wherein the first elastic element second coupling end (69) is one or at least one first free end of the first wire spring,wherein the first elastic element further coupling end (70) is one or at least one second free end of the first wire spring, wherein the first elastic element first seat (85) is shaped so as to accommodate the at least one fold which forms the first elastic element first end (68), for example it is an oval hole, wherein the first elastic element second seat (86) is shaped so as to accommodate the first elastic element second coupling end (69), wherein the first elastic element second seat (86) is, for example, shaped as a cylindrical hole, wherein the first elastic element third seat (87) is shaped so as to accommodate the first elastic element further coupling end (70), wherein the first elastic element third seat (87) is, for example, shaped as a cylindrical hole.

9. A particulate filter (1) according to any one of claims 3 to 8, wherein the first filter (8) delimits at least one first filter groove (73, 73'), wherein the first elastic element (67) is at least partially inserted into the at least one first filter groove (73, 73') so that the first filter (8) is elastically tightened to the first cover (5).

10. A particulate filter (1) according to the preceding claim and claim 6, wherein the first filter (8) comprises a first filter radially outer portion (34) and a first filter radially inner portion (35), wherein the first filter radially inner portion (35) comprises a first filter inner-side cantilevered portion(36), which extends in a cantilevered manner from the first filter radially outer portion (34) so that it faces the first braking surface (102) either directly or indirectly,- wherein the first filter radially inner portion (35) comprises a first filter outer-side cantilevered portion(37), which extends in a cantilevered manner from the first filter radially outer portion (34) so that it faces the second braking surface (103) either directly or indirectly, wherein the first filter inner-side cantilevered portion (36) and the first filter outer-side cantilevered portion (37) are axially spaced apart from each other defining a free disc outlet space through which the brake disc is rotatable, wherein the at least one first filter groove (73, 73') comprises a first filter first groove (73) and a first filter second groove (73'), wherein the first filter outer-side cantilevered portion (37) delimits the first filter first groove (73), wherein the first filter inner-side cantilevered portion (36) delimits the first filter second groove (73'), wherein the first elastic element first branch (74) and / or the first elastic element body (71) is at least partially inserted into the first filter first groove (73) so as to mechanically reinforce the first filter outerside cantilevered portion (37), wherein the first elastic element second branch (75) and / or the first elastic element body (71) is at least partially inserted into the first filter second groove (73') so as to mechanically reinforce the first filter inner-side cantilevered portion (36).

11. A particulate filter (1) according to the preceding claim, wherein the first elastic element firstbranch (74) is shaped forming a U-shaped portion to sandwich the first filter outer-side cantilevered portion (37) by inserting into the first elastic element first groove (73), wherein the first elastic element second branch (75) is shaped forming a U-shaped portion to sandwich the first filter inner-side cantilevered portion (36) by inserting into the first elastic element second groove (73').

12. A particulate filter (1 ) according to any one of claims 9 and 11 , wherein the first filter inner-side cantilevered portion (36) and the first filter outer-side cantilevered portion (37) are pleated portions of the first filter (8).

13. A particulate filter (1 ) according to any one of claims 9 and 12, wherein the first filter (8) comprises a first filter first retaining wall (58), preferably flat, configured to face the first braking surface (102), wherein the first filter first retaining wall (58) delimits the first filter inner-side cantilevered portion (36), wherein the first filter (8) comprises a first filter second retaining wall (59), preferably flat, configured to face the second braking surface (103), wherein the first filter second retaining wall (59) delimits the first filter outer-side cantilevered portion (36).

14. A particulate filter (1 ) according to any one of the preceding claims, wherein the support structure (2) comprises a second cover or disc inlet cover (6) configured to cover at least radially the disc inlet portion (105), wherein the filtering assembly (3) comprises a second filter (9), wherein said connection means (66) comprises a second elastic element (76) of said at least one elastic element (67, 76), wherein said second elastic element (76) is a second wire spring, wherein said second elastic element (76) reversibly connects and / or constrains the second filter (9) to the second cover (6).

15. A brake caliper assembly for a disc brake comprising- a brake caliper (100) comprising a caliper body (104) adapted to be arranged straddling a brake disc (101 ) and at least one brake pad (107, 108) supported either directly or indirectly by the caliper body (104), each brake pad (107, 108) comprising a respective support plate (109, 110) supporting respective friction material (111 , 112); and- a particulate filter (1 ) according to any one of the preceding claims connected to the brake caliper (100).

Images