巴西专利BR112012030942B1 disc brake disc and assembly

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专利摘要:
DISC BRAKE DISK The present invention relates to a disc brake disc (1) arranged around a rotational axis (A-A) comprising: - a cold strip (2) and a drum (3); - said drum comprising a connecting flange (4), having a connecting portion (5) suitable for connecting the drum (3) to a support wheel hub (9); - said connecting portion (5) comprising a surface facing the wheel hub (6) and an opposite surface (7) facing a wheel rim; - said drum (3) still comprising a margin (10) arranged radially outside said portion (5) for connecting the drum to the wheel hub and arranged radially outside said housing (8) suitable for accommodating the wheel hub (9 ); - said drum (3) still comprising a drum body (11) which connects said margin (10) to the cold strip (2) and which delimits an external space (12) between the drum (3) and the rim of the wheel (100) and being suitable to create a gap (13) between the drum (3) and the wheel hub (9) accommodated therein, said axially transverse span according to the axial direction (AA) substantially the entire drum ( 3) until reaching the said margin (10); - in which said margin (10) delimits at least one opening (...).
公开号:BR112012030942B1
申请号:R112012030942-0
申请日:2010-06-04
公开日:2020-10-27
发明作者:Gianluigi Maronati；Leone Oberti；Nino Ronchi
申请人:Freni Brembo S.P.A.；
IPC主号:

专利说明:

[001] The present invention relates to a disc brake disc comprising a brake strip and a drum for coupling the disc to a support wheel hub of a vehicle wheel.
[002] In particular, the present invention relates to a disc brake disc, for example, for commercial vehicles.
[003] As known, commercial vehicles have elements to support the wheel rims or wheel hubs, robust enough to support heavy transport loads.
[004] Typically, these wheel hubs are connected to the axles by means of bearings, which allow free rotation of the wheel hub and thus of the wheel rim connected to it. In cases where these wheel hubs are used for commercial vehicles, the bearings, accommodated in the wheel hub, are required to support extremely heavy loads. Although the friction between the axle and the wheel hub is particularly low, due, for example, to the use of bearings, if the action to be transmitted through the bearing is particularly high, considerable heating of the bearing and all components adjacent to it occurs he. This heating must be properly discharged so as not to compromise the correct operation of the bearings accommodated in the wheel hub and thus possibly the disc brake disc connected to it.
[005] Upon activation, the braking system also causes specific heat production. The vehicle's braking action transforms, due to the friction between its components, the kinetic energy into thermal energy. The fact that the disc brake disc is connected to the wheel rim supporting the wheel rim causes, in the case of frequent and intense braking actions, for example, in cases where the vehicle is traveling down a passage alpine, a high temperature rise of the disc brake disc and also of the parts connected to the wheel hub also causing considerable heating of the wheel hub and the bearing accommodated therein. Sometimes the failure to properly cool the brake can compromise not only the correct operation of the disc, but also the bearing.
[006] In this way, a particular need arises to find and provide a solution capable of correctly allowing the cooling of not only the disc brake disc, but particularly the interface between the disc brake disc and the wheel hub that accommodates the limp.
[007] Solutions having means for the passage of air cooling at the base of the disc brake disc, particularly at the base of the brake disc thereof, are known.
[008] For example, IT 1 147 976 has a disc brake disc connected to a wheel hub provided with a flange that moves the disc away from the cylindrical part of the wheel hub suitable to accommodate the bearing. In addition, this known solution has, in the part in the form of a cylindrical drum to connect to the wheel hub, openings arranged slightly after the brake strip, suitable for circulating the cooling air around the brake strip, the air then being conducted specific blades attached to the rim outside the wheel.
[009] Although satisfactory, from the points of view, this modality of the prior art requires a considerable total radial dimension to move the disc brake disc away from the part of the wheel hub suitable to accommodate the bearing. In addition, this prior art solution allows the circulation of cooling air only in the vicinity of the wheel hub facing the vehicle, leading to non-uniform cooling of the wheel hub and the bearing contained therein.
[0010] Furthermore, document DE 39 42 651 shows a solution similar to that previously described for use in a vehicle, in which the disc brake disc is of the ventilated type.
[0011] Although satisfactory from various points of view, this solution is particularly more suitable for cooling the brake strip than the wheel hub and the bearing contained therein. In fact, in order to better conduct air around the brake strip, a blade is provided inside the disc brake disc that separates the brake strip from the wheel hub, pushing the air towards the openings provided in the portion connection between the brake strip and the drum to obtain the maximum possible cooling in the brake strip. If the heat generated by the braking action is not adequately released and then cross the drum that reaches the wheel hub, for example, due to the low speed of the vehicle, this prior art solution will not allow additional and separate cooling directed to avoid the malfunction of the bearing.
[0012] The document FR 1 491 828 shows a solution of the braking system also in which a disc brake provided with a drum having openings not specially developed for the aeration of the wheel hub is shown.
[0013] An object of the present invention is to overcome the previously described disadvantages of the prior art and simultaneously develop and supply a disc brake disc and a disc brake disc and the support wheel hub assembly that can cool the accommodated bearing in the wheel hub.
[0014] Another object of the present invention is to locate and provide a solution capable of providing a maximum uniform cooling of the entire wheel hub and the bearing contained therein, particularly, in the part of it closest to the fastening elements of the wheel rim.
[0015] These and other objects are obtained by means of a disc brake disc as described in claim 1 attached herein, as well as by means of an assembly as described in claim 16.
[0016] According to a general modality, a disc brake disc comprises a brake strip and a drum. Said drum comprises a connection flange, provided with a part for connecting to a wheel hub. Said connecting portion comprises a surface facing the wheel hub and an opposite surface facing one of the wheel. The surface facing the wheel hub comprises a suitable housing to accommodate a portion of the end of the wheel hub.
[0017] Preferably, according to a modality, provided radially external with respect to the part to connect to the flange wheel hub to connect the drum is a margin, in which - advantageously - said margin is radially external with respect to said housing suitable to accommodate the wheel hub.
[0018] According to one embodiment, said drum also comprises a barrel body that connects said margin to the brake strip.
[0019] Said drum body delimits, along the wheel rim, an external space and a gap - internally - between the drum and the wheel hub accommodated in it. According to one embodiment, said span crosses the internal extension of the drum axially until it reaches the flange margin.
[0020] According to one embodiment, said margin defines at least one opening that communicates said gap provided between the body of the drum and the wheel hub with the space outside the drum.
[0021] According to one embodiment, at least one said opening is radially external with respect to the hub of the housing wheel.
[0022] According to one embodiment, at least one said opening is radially external with respect to the drum body.
[0023] At least one said opening is, according to one modality, delimited by the walls that provide at least an inclined section with respect to the axial direction.
[0024] Due to the provision of a margin that is radially external with respect to the flange to connect the drum to the wheel hub, it is possible to provide a gap capable of allowing the free circulation of the cooling fluid, for example, air, between the body of the drum and the wheel hub that circulates over the entire axial dimension thereof, not only allow the brake band to cool properly, particularly at the base thereof, but also adequately cool the wheel hub and the bearing accommodated therein.
[0025] Due to the provision of at least one opening in the radially outer margin, the cooling air can reach the space between the brake strip and the rim, also adequately cooling the brake strip on the braking surface of it facing the rim before to flow out through the specific openings provided in the wheel rim, for example, the openings provided between the connecting spokes between the channel to accommodate the tire and the flange to connect the wheel rim to the wheel hub.
[0026] Other modalities and advantages should be evident from the description of some modalities of the invention described below, only provided as a non-limiting example in the description that follows.
[0027] The construction and functional characteristics of the disc brake disc and the set according to the present invention should be understood in depth from the description described below in which reference is made to the attached drawings representing some preferred, but not limiting modalities, in which: through the following figures: - figure 1 represents an axial view - from the side of the vehicle towards the wheel rim - of a set of the disc brake disc fitted to a hub of the wheel on which a wheel rim is attached; figure 2 represents a section according to line II-II of figure 1 of the set of this figure 1; figure 3 shows an axonometric view - on the wheel side - of a disc brake disc according to a first embodiment; figure 4 shows an axonometric view - of the hub on the side of the wheel - of the disc brake disc of figure 3; - figure 5 represents a view - according to the axis of the wheel rim to the vehicle - from the disc brake disc according to figure 3; figure 6 represents section VI-VI of figure 5 of the disk brake disc of figure 3; - figure 7 represents an axonometric view - on the wheel side - of a disc brake disc according to a second mode; figure 8 represents an axonometric view according to the wheel side hub of the disk brake disc of figure 7; figure 9 represents an axial view - on the wheel side - of the disk brake disc in figure 7; and - figure 10 represents a section according to line X-X in figure 9 of the disk brake disc in figure 7.
[0028] According to the general modality and as seen in the figures, a disc brake disc 1 is arranged around a rotational axis A-A. Said disc 1 comprises a brake strip 2 that extends around said rotational axis A-A and forms two opposite braking surfaces 28, 29 suitable for cooperating with brake caliper pads disposed on each side of said brake strip.
[0029] Said disc 1 defines an axial direction AA coincident or parallel to said rotational axis AA, a radial direction RR which in turn defines a radially external direction RE when departing from said axial direction AA, as well as the direction radially internal RI when approaching said axial direction AA, as well as the circumferential TT direction orthogonal to said axial direction AA and said radial direction R- R.
[0030] Said disc further comprises a drum 3. Said drum comprises a connecting flange 4, having a connecting portion 5 suitable for connecting the drum 3 to a support wheel hub 9 in which a rim 100 of a wheel vehicle is connected.
[0031] According to one embodiment, said connecting portion 5 of said connecting flange 4 comprises a surface facing the wheel hub 6 and an opposite surface 7 facing a wheel rim.
[0032] According to one embodiment, said surface facing the wheel hub 6 comprises a housing 8 suitable for accommodating a part of the wheel hub 9.
[0033] According to an embodiment, said drum 3 still comprises a margin 10 arranged radially outside said connection portion 5 of the drum to the wheel hub.
[0034] According to an embodiment, said margin 10 is arranged radially outside said housing 8 suitable for accommodating the wheel hub 9.
[0035] According to an embodiment, said drum 3 further comprises a drum body 11 that connects said margin 10 to the brake strip 2. Said drum body 11 delimits an external space 12 between drum 3 and the wheel rim 100.
[0036] According to an embodiment, said drum body 11 is suitable for creating a gap 13 between the drum 3 and the wheel hub 9 accommodated therein. Said span crosses axially, according to axial direction A-A, substantially the entire drum 3 until reaching said margin 10.
[0037] According to an embodiment, said margin 10 delimits at least one opening 14 that communicates the gap 13 between the body of the drum 11 and the hub of the wheel 9 with an external part of the drum 12.
[0038] According to one embodiment, at least one said opening 14 is arranged radially outside said housing 8 for the wheel hub 9. According to one embodiment, at least one said opening 14 is bounded by walls 15 having at least a section 16 inclined in the axial direction AA.
[0039] According to one embodiment, a plurality of openings 14 are present in said margin 10 of the drum 3 and are arranged along a circumferential direction T-T at regular intervals.
[0040] According to one embodiment, the walls 15 that delimit said opening 14 have at least a second section of the wall 17 having the direction parallel to the axial direction A-A.
[0041] According to one embodiment, at least one said inclined section 16 has an inclination with respect to the axial direction A-A between 1 sexagesimal degree and 89 sexagesimal degrees, preferably an inclination between 20 sexagesimal degrees and 50 sexagesimal degrees.
[0042] According to an embodiment, said walls 15 that delimit said opening 14 have an end part 18 facing the outer space 12 folded back towards the brake strip 2.
[0043] According to one embodiment, said drum body 11 that connects a margin 10 to the brake strip 2 delimits with a part of it at least one opening 14 with a section of it inclined with respect to the axial direction AA comprised between 1 degree sexagesimal and 89 degrees sexagesimals, preferably an inclination comprised between 20 degrees sexagesimals and 50 degrees sexagesimals and even more preferably with an inclination comprised between 30 degrees sexagesimals and 35 degrees sexagesimals.
[0044] According to one embodiment, said drum body 11 which connects a margin 10 to the brake strip 2 comprises a conical part of the body 21 which increases towards said margin 10 and which is connected to said margin 10.
[0045] According to an embodiment, said drum body 11 continues from said conical section of body 21 towards the brake strip 2 with a substantially cylindrical part of body 22.
[0046] According to an embodiment, at least one said opening 14 is connected to the gap 13 by means of an annular groove 19 having at least two parallel and opposite walls oriented according to a direction substantially inclined with respect to the axis AA.
[0047] According to one embodiment, at least one said opening 14 is connected to the gap 13 by means of an annular groove 19 having at least two parallel and opposite walls oriented according to an inclined direction with respect to the AA axis , a direction having an inclination between 20 degrees sexagesimals and 50 degrees sexagesimals, preferably comprised between 30 degrees sexagesimals and 35 degrees sexagesimals.
[0048] According to one embodiment, said opposite surface 7 of the connecting portion 5 of the flange 4 for connecting the drum 3 facing the rim 100 has a housing 20 for the rim of the wheel 100 disposed radially internally with respect to said margin 10 and with respect to at least one said opening 14.
[0049] According to an embodiment, said drum 3 is supplied in one piece with said brake band 2.
[0050] According to one embodiment, said drum body 11 is connected to the brake strip 2 forming a release channel 23 disposed below with respect to the braking surface, preferably the braking surface 7 facing a wheel.
[0051] According to one embodiment, said brake band 2 is a ventilated brake band comprising opposite plates 24, 25 spaced from one another to form an internal ventilation channel 31 and in which said drum body 11 is connected to the plate 24 facing a wheel rim 100.
[0052] According to an embodiment, said margin 10 is radially outside said barrel 11.
[0053] According to one embodiment, said wheel hub 9 comprises a body having an outer surface facing the barrel body 11 from which the ribs 26 extend radially and in the axial direction.
[0054] According to one embodiment, said ribs 26 simultaneously constitute elements to reduce the wheel hub, reinforcement elements, and radiator elements to cool the wheel hub, as well as elements to conduct air to the gap 13 between the drum and wheel hub.
[0055] According to an embodiment, said ribs 26 are circumferentially distributed in the wheel hub 9 and accommodate the housings 27 to receive the screws to connect the drum 3 and the wheel rim 100.
[0056] According to an embodiment, said ribs 26 are pointed and move away from the flange 4 to connect the drum 3.
[0057] As still possibly observed from the figures, according to one embodiment, a set 32 comprises a disc brake disc 1, a support wheel hub 9, connected to which is one or more bearings 30, and a wheel rim 100.
[0058] The set 32 has an axis of symmetry or rotational axis A- A. A radial axis RR is supplied transversely to said rotational axis A-A. With respect to this radial axis RR the direction that departs from the rotational axis AA is indicated as a radial direction from the outside indicated in the figures with RE. The direction of movement of the radial direction R-R approaching the rotational axis A-A is indicated as the internal radial direction, indicated in the figure with the reference RI.
[0059] The circumferential or tangential direction T-T, as indicated in figure 1 is provided transversal to the axial direction A-A and the radial direction R-R.
[0060] According to one embodiment, a wheel hub 9 has bearings 30 attached to it that allow coupling said wheel hub 9 to a vehicle axle so that the wheel hub 9 is free to rotate with to the axis.
[0061] Said wheel hub 9, has a coupling surface 33 at its end facing a wheel rim 100. According to one embodiment, said wheel hub 9 has a cylindrical body provided with an internal coupling surface with a bearing 30 and a suitable external surface to release the heat generated by the bearing 30 during its operation.
[0062] According to an embodiment, said wheel hub 9 externally has ribs 26 suitable for reinforcing the wheel hub 9 and simultaneously reduces its structure, also allowing to form - within said ribs - housings for screws 27 suitable for coupling to the wheel hub of the disc brake disc 1 - as well as, outside of it, the wheel rim 100.
[0063] According to one embodiment, said wheel hub 9 has an end of this for coupling to the disc brake disc 1 suitable for a firm connection of the disc 1 as well as for its centralization with respect to the rotational axis A-A.
[0064] According to one embodiment, the disc brake disc 1 comprises a brake strip 2 arranged in a plane transversal to the rotational axis A-A and coplanar to the radial direction R-R.
[0065] According to one embodiment, said brake strip 2 is of the ventilated type, comprising opposite plates 24, 25, in particular a plate 24 disposed towards the wheel rim 100 and an opposite plate 25 disposed towards the vehicle .
[0066] According to an embodiment, said plates 24 and 25 are spaced from each other by means of connection elements that allow maintaining a ventilation channel between said plates 24, 25. For example, said elements for connecting the plates 24, 25 are suitable pins to firmly connect plates 24, 25 to one another and at the same time to efficiently release the heat generated during the braking action.
[0067] According to one embodiment, the ventilation channel 31 of the brake strip 2 is opened at its internal radial margin into the rotational axis AA of the disc 1, allowing easy inflow of the cooling air that crosses the entire ventilation channel. 31 until it extends from a radial periphery of the outside of the brake strip 2 towards the environment outside the disc.
[0068] According to an embodiment, said plates 24, 25 have braking surfaces externally 28, 29, in particular, a first braking surface 28 facing a wheel rim 100 and an opposite braking surface 29 facing the vehicle.
[0069] Said braking surfaces 28, 29 are suitable for cooperating with pads accommodated in a caliper body directly supported by a fixed spindle with respect to the brake strip 2 that rotates around the rotational axis A-A.
[0070] According to an embodiment, said brake strip 2 is supported on the wheel hub to be sufficiently far from the wheel rim 100 to be coupled with the compass body on which it is straddled.
[0071] In particular, the brake strip 2 must be sufficiently wide to allow ample braking surfaces 28, 29, to allow adequate braking action, and at the same time said brake strip 2 must be small enough in size to allow easy accommodation of this within the wheel rim 100 also considering the entire size of the compass body arranged on each side in it.
[0072] Said brake range 2 is supported by a drum 3.
[0073] According to one embodiment, said drum has a barrel body 11 axially extended, at least by a part thereof, connecting to a margin 10 of the drum and thus to a flange 4 to connect the drum to the wheel hub 9 .
[0074] The axial dimension of the drum body 11 allows to position the brake strip 2 away from the coupling surface of the wheel hub 33, to allow the compass body to be accommodated within the wheel rim 100.
[0075] According to an embodiment, said barrel body 11 has a cylindrical section 22.
[0076] Said cylindrical section 22 is connected at a first end to the brake strip.
[0077] According to one embodiment, said cylindrical section 22 is connected to the brake strip 2 forming a release channel 23, preferably disposed below with respect to the braking surface 28 facing the wheel of the brake strip 2, facilitating a small dimensional deformation of the disc 1 during the high thermal excursions of the brake range 2 caused by the braking action.
[0078] According to one embodiment, said drum body 11 has a conical section of body 21.
[0079] According to one embodiment, said conical section of the body 21 connects the cylindrical section 22 to the margin 10 of the flange that connects the body of the drum 11 to the flange to connect the drum to the wheel hub 4.
[0080] According to an embodiment, said drum 3 has a margin 10 that is radially more external with respect to the drum body 11, to allow its movement away from the wheel hub, and in particular from the hub coupling surface of the wheel 33 and at the same time have a small total drum size.
[0081] According to one embodiment, said drum body 11 is connected to the flange 4 to connect the drum to the wheel hub 9 by means of an annular margin 10.
[0082] Said drum body 11 forms - with its side facing the rotational axis A-A - a gap 13 between the drum 3 and the wheel hub 9.
[0083] According to one modality, said gap 13 is fluidly opened towards the vehicle to allow the free circulation of a cooling fluid - towards the braking surface of the brake strip facing the vehicle, - in towards the ventilation channel 31 of the ventilated brake strip, - towards the gap, to allow the cooling fluid to touch the outer surface of the wheel hub 9 and substantially over its entire axial dimension until it reaches the edge 10 of the drum 3 .
[0084] According to an embodiment, said margin 10 has at least one opening in margin 14 that provides fluid communication between said gap 13 and the space outside the drum disposed between the wheel rim 100 and disk 1, indicated in the figures with reference 12.
[0085] Thus, the cooling fluid that crosses the span 13 touches and cools the outer surface of the wheel hub, for example, facilitating the heat exchange with the wheel hub ribs 26, and then reaches the edge 10 of the drum and exits through at least one opening 14 of the rim 10 of the drum 3 reaching the space outside the drum 12 in which you can cool the braking surface facing the wheel 28 of the brake strip 2 and then exit the openings 34 provided for the rim of wheel 100.
[0086] According to one embodiment, at least one opening 14 is a plurality of openings 14 arranged, for example, equally spaced along the circumferential direction T-T of the development of the margin 10.
[0087] According to one embodiment, said openings are bounded by the walls 15 having at least one section of the wall 16 inclined with respect to the rotational axis A-A. According to one embodiment, said section of the inclined wall 16 forms an acute angle with respect to the rotational axis A-A, the angle facing a wheel rim 100.
[0088] According to one embodiment, said walls 15 that delimit opening 14 have a second section of wall 17 arranged parallel to the rotational axis A-A.
[0089] Advantageously, said opening has walls having a section diverging from each other at the free end thereof.
[0090] According to an embodiment, said walls 15 that delimit opening 14 have a part of the wall 18 facing the space outside the drum 12 which is folded facing the brake strip 2.
[0091] According to an embodiment, said margin 10 is connected to a flange to connect the drum to the wheel hub 4 substantially disposed across the rotational axis AA and suitable to be coupled to the coupling surface of the hub of the wheel. wheel 33.
[0092] According to one embodiment, said drum body 11 and said flange 4 for connecting the drum to the wheel hub delimit - between them - a section for conducting the cooling fluid towards the opening 14.
[0093] According to one embodiment, an annular groove 19 is provided in said margin 10.
[0094] According to one embodiment, said annular groove 19 has opposite and parallel wall sections defining an annular channel inclined with respect to the rotational axis A-A.
[0095] Preferably, according to one embodiment, said walls opposite and parallel to each other are inclined forming an acute angle with respect to the rotational axis A-A.
[0096] Said flange 4 for connecting the drum 3 to the hub of the wheel 9 has a connecting portion of the flange 5. Said connecting portion 5 has a first surface facing the hub of the wheel 6 and an opposite surface facing the wheel 7.
[0097] According to one embodiment, provided on said surface 6 facing the wheel hub of the connecting portion 5 of the flange 4 is a housing of the wheel hub 8 recessed in the connecting flange 4 to form an abutment surface for the firm connection of the drum to the wheel hub and a central margin, suitable to cooperate with the central surface provided at the free end of the wheel hub 9.
[0098] According to an embodiment, said flange margin 10 is radially outside said housing wheel hub 8.
[0099] Said connection portion 5 of the flange 4 of the drum 3 has - on the opposite surface 7 of it facing the wheel - an annular relief suitable for the central coupling of the wheel rim 100, being inserted into a specific opening 36 provided in the wheel rim 100.
[00100] Due to the provision of a margin 10 of the flange 4 of the drum 3 which is radially external with respect to the housing for coupling the drum to the wheel hub 8, it is possible to provide at least one ventilation opening capable of communicating a gap provided between the wheel hub 9 and the drum 3 with the outer space 12 around the drum radially external with respect to the rotational axis AA.
[00101] This solution makes it possible to keep the body 11 of the drum 3 disposed closer to the wheel hub in order to reduce the entire size of the disc brake disc to the maximum, simultaneously maintaining wide braking surfaces 28, 29 of the brake track 2, and simultaneously preserving a gap capable of allowing the flow of the cooling fluid to touch the outer surface of the wheel hub.
[00102] Having provided at least one opening 14 in the margin 10 of the connection flange 4 capable of communicating the gap 13 with the space outside the drum 12, it allows the cooling fluid to flow over the entire axial dimension of the wheel hub 9 until touch the final coupling zone between the wheel hub and the drum, ensuring uniform and complete cooling of the entire wheel hub and the bearing connected to it.
[00103] Due to the provision of a barrel body 11 provided with a tapered section of the body 21 it is possible to provide a margin 10 of the connecting flange 4 particularly radially external with respect to the barrel body 11 particularly the cylindrical section 22 thereof, thus approaching the brake strip 2 to the rotational axle AA even further to reduce all dimensions of the disc brake disc 1 and allow the accommodation of a compass body to the space between the disc brake disc 1 and the wheel rim 100.
[00104] The previously described modalities may be subject, by a technician in the subject to fulfill contingent needs, to modifications, adaptations and substitution of elements with other functionally equivalent ones, without, for this reason, departing from the scope of the claims described below.
[00105] All the characteristics described belonging to a possible modality can be provided independently from other characteristics of the previously described modalities. List of References

权利要求:
Claims (18)
[0001]
1. Disc brake disc (1) arranged around a rotational axis (AA), characterized by the fact that it comprises: - a brake band (2) extending around said rotational axis (AA) and forming two opposite braking surfaces (28, 29) suitable for cooperating with brake caliper pads, arranged on said brake band; - said disc (1) defining an axial direction (AA) coincident or parallel to said rotational axis (AA), a radial direction (R-R) defining a radially external direction (RE) when departing from said axial direction, as well as a radially internal direction (RI) when approaching said axial direction (AA), as well as a cir-circumferential direction (TT) orthogonal to said axial direction (AA) and said radial direction (RR); - said disk still comprising a drum (3); - said drum comprising a connecting flange (4) having a connecting portion (5) suitable for connecting the drum (3) to a support wheel hub (9) in which a rim (100) of a vehicle wheel is connected; - said connecting portion (5) of said connecting flange (4) comprising a surface facing the support wheel hub (9) and an opposite surface (7) facing a wheel rim; - said surface facing the support wheel hub (9) comprising a housing (8) suitable for accommodating a part of the support wheel hub (9); - said drum (3) still comprising a margin (10) arranged radially outside said portion (5) for connecting the drum to the support wheel hub; - said margin (10) being arranged radially outside said housing (8) suitable to accommodate the support wheel hub (9); - said drum (3) still comprising a drum body (11) that connects said margin (10) to the brake strip (2); - said drum body (11) which delimits an external space (12) between the drum (3) and the wheel rim (100); - said drum body (11) being suitable to create a gap (13) between the drum (3) and the support wheel hub (9) accommodated therein, said axially transverse span, according to the axial direction ( AA), substantially the entire drum (3) until reaching the said margin (10); - wherein said margin (10) delimits at least one opening (14) that communicates the gap (13) provided between the drum body (11) and the wheel hub (9) with the outside of the drum ( 12): - at least one said opening (14) being arranged radially outside said housing (8) for the wheel hub (9); - in which at least one opening (14) is formed between an edge (10) of the connecting flange (4) and the edge (10) of the drum (11) to facilitate movement of air through the gap (13) and away the brake range (2); and - wherein said at least one opening (14) is bounded by the walls (15) having at least one section (16) inclined in relation to the axial direction (AA), preventing said opening (14) from extending as a channel in the barrel body (11), and wherein said at least one opening (14) is connected to the span (13) by means of an annular groove (19) having at least two parallel and opposite walls oriented in a according to a direction substantially inclined in relation to the axis.
[0002]
2. Disc (1), according to claim 1, characterized by the fact that said at least one opening (14) is a plurality of openings (14) provided on said margin (10) of the drum (3) , the plurality of openings being arranged along a circumferential direction (TT) at regular intervals.
[0003]
3. Disc (1), according to claim 1, characterized by the fact that said at least one inclined section (16) has an inclination in relation to the axial direction (A-A) between 1 sexagesimal degree and 89 sexagesimal degrees.
[0004]
4. Disc (1), according to claim 1, characterized by the fact that said walls (15) that delimit said opening (14) have an end part (18) facing the external space (12) and in that the end part widens in its opening in the outer space.
[0005]
5. Disc (1), according to claim 1, characterized by the fact that said drum body (11) delimits with a part of it at least one opening (14) with a section of it inclined in relation to the direction axial (AA) between 1 sexagesimal degree and 89 sexagesimal degrees.
[0006]
6. Disc (1) according to claim 1, characterized by the fact that said drum body (11) connecting the margin (10) to the brake strip (2) comprises a conical part of the body (21) which increases towards said margin (10).
[0007]
7. Disc (1), according to claim 6, characterized by the fact that said drum body (11) continues from said conical section of the body (21) towards the brake strip (2) with a cylindrical body part (22).
[0008]
8. Disc (1) according to claim 1, characterized by the fact that the annular groove (19) having at least two walls parallel and opposite each other are inclined between 20 degrees sexagesimals and 50 degrees sexagesimals in relation to the axis .
[0009]
9. Disc (1) according to claim 1, characterized by the fact that said opposite surface (7) facing the rim (100) of the connecting portion (5) of the connecting flange (4) of the drum (3 ) has a housing (20) for the wheel rim (100) arranged radially internally with respect to said margin (10) with respect to said at least one opening (14).
[0010]
10. Disc (1), according to claim 1, characterized by the fact that said drum (3) is provided in a single piece with said brake strip (2).
[0011]
11. Disc (1), according to claim 1, characterized by the fact that said drum body (11) is connected to the brake strip (2) forming a release channel (23) in a lower cut arrangement in relation to the braking surface.
[0012]
12. Disc (1) according to claim 1, characterized by the fact that said brake strip (2) is a ventilated brake strip comprising opposite plates (24, 25) spaced from one another to form a channel of internal ventilation (31) and wherein said drum body (11) is connected to the plate (24) facing a wheel rim (100).
[0013]
13. Disc (1), according to claim 1, characterized by the fact that said margin (10) is radially outside said drum body (11).
[0014]
14. Set characterized by the fact that it comprises a disc brake disc (1) (1) disposed around a rotational axis (AA), comprising: - a brake strip (2) extending around said rotational axis (AA) and forming two opposite braking surfaces (28, 29) suitable for cooperating with brake caliper pads arranged on said brake band; - said disc (1) defining an axial direction (AA) coincident or parallel to said rotational axis (AA), a radial direction (RR) defining a radially external direction (RE) when departing from said axial direction, as well as a radially internal direction (RI) when approaching said axial direction (AA), as well as a circumferential direction (TT) orthogonal to said axial direction (AA) and to said radial direction (RR); - said disk still comprising a drum (3); - said drum comprising a connecting flange (4) having a connecting portion (5) suitable for connecting the drum (3) to a support wheel hub (9) in which a rim (100) of a vehicle wheel is connected; - said connecting portion (5) of said connecting flange (4) comprising a surface facing the support wheel hub (9) and an opposite surface (7) facing a wheel rim; - said surface facing the support wheel hub (9) comprising a housing (8) suitable for accommodating a part of the support wheel hub (9); - said drum (3) still comprising a margin (10) arranged radially outside said portion (5) for connecting the drum to the support wheel hub; - said margin (10) being arranged radially out of said housing (8) suitable to accommodate the support wheel hub (9): - said drum (3) still comprising a drum body (11) that connects said drum margin (10) to the brake strip (2); - said drum body (11) which delimits an external space (12) between the drum (3) and the wheel rim (100); - said drum body (11) being suitable to create a gap (13) between the drum (3) and the support wheel hub (9) accommodated therein, said axially transverse span, according to the axial direction ( AA), substantially the entire drum (3) until reaching the said mark / 7 (10); - wherein said margin (10) delimits at least one opening (14) that communicates the gap (13) provided between the drum body (11) and the wheel hub (9) with the outside of the drum ( 12); - at least one said opening (14) being arranged radially outside said housing (8) for the wheel hub (9); - in which at least one opening (14) is formed between an edge (10) of the connecting flange (4) and the edge (10) of the drum (11) to facilitate movement of air through the gap (13) and away the brake range (2); and - wherein said at least one opening (14) is bounded by the walls (15) having at least one section (16) inclined in relation to the axial direction (AA), preventing said opening (14) from extending as a channel in the barrel body (11), and wherein said at least one opening (14) is connected to the span (13) by means of an annular groove (19) having at least two parallel and opposite walls oriented in a according to a direction substantially inclined in relation to the axis; and - where the support wheel hub (9) still accommodates a bearing (30).
[0015]
15. Assembly according to claim 14, characterized by the fact that said support wheel hub (9) comprises a body having an external surface facing the barrel body (11) from where the ribs (26) ) extend radially and in an axial direction.
[0016]
16. Assembly according to claim 15, characterized by the fact that said ribs (26) allow to cool and transport air to the gap (13) between the drum and hub of the support wheel.
[0017]
17. Assembly according to claim 15, characterized by the fact that said ribs (26) are circumferentially distributed in the support wheel hub (9) and accommodate the housings (27) to receive the screws to connect the drum (3) and the wheel rim (100).
[0018]
18. Assembly according to claim 15, characterized by the fact that said ribs (26) are pointed away from the connection flange (4) of the drum (3).

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同族专利:

公开号 | 公开日

CN103080591B|2015-09-23|

BR112012030942A2|2016-11-01|

ITMI20101005A1|2011-12-05|

US9464680B2|2016-10-11|

CN103080591A|2013-05-01|

IT1400271B1|2013-05-24|

EP2577088B1|2015-11-25|

WO2011151676A1|2011-12-08|

PL2577088T3|2016-05-31|

RU2012151834A|2014-07-20|

RU2577159C2|2016-03-10|

US20130133998A1|2013-05-30|

EP2577088A1|2013-04-10|

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法律状态:
2019-01-15| B06F| Objections, documents and/or translations needed after an examination request according art. 34 industrial property law|

2019-10-01| B06U| Preliminary requirement: requests with searches performed by other patent offices: suspension of the patent application procedure|

2020-07-28| B09A| Decision: intention to grant|

2020-10-27| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 10 (DEZ) ANOS CONTADOS A PARTIR DE 27/10/2020, OBSERVADAS AS CONDICOES LEGAIS. |

优先权:

申请号 | 申请日 | 专利标题

ITMI2010A001005A|IT1400271B1|2010-06-04|2010-06-04|DISC FOR DISC BRAKE|

PCT/IB2010/052499|WO2011151676A1|2010-06-04|2010-06-04|Brake disk with bell|

ITMI2010A001005|2010-06-04|

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