• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    DISC FOR DISC BRAKES A brake band (2) is a first material suitable for the braking action and has at least one extension (8) for coupling to a bell (3), said bell (3) being suitable for coupling the disc (1) to a vehicle hub; said coupling extension (8) of the brake band (2) being a single piece with said brake band (2) and forming a geometric coupling (9) with said bell (3) to transmit the braking action of the said band (2); said geometric coupling (9) being obtained by means of melting preferably of the bell (3) on the brake band (2), said bell (3) being of a second material having a different melting point with respect to the fusion of the brake band material (2); said geometric coupling (9) having, circumferentially spaced, first teeth of the band (2) which extend to be received firmly in the first axial seats (11) of the bell (3); wherein said geometric coupling (9) has eighth teeth spaced circumferentially from the band extending radially circumferentially with respect to said first axial teeth (10) which extend substantially radially and are suitable to be securely received in octave radial connections (13) present in the bell (3).
    公开号:BR112013018576B1
    申请号:R112013018576-7
    申请日:2012-01-23
    公开日:2021-02-23
    发明作者:Giovanni Tironi；Simone Biondo；Stefano Medici；Michele Donati
    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, particularly, but not exclusively, for applications in the automotive field.
    [002] In particular, the present invention also concerns a brake band for a disc brake disc, a bell for a disc brake disc, as well as a method for obtaining a brake band, a method for making a disc for a disc brake and apparatus for producing a disc for a disc brake.
    [003] As is known, disc brake discs are made up of two parts sharing an axis of rotation. A first part, the support bell, is intended to be connected to a vehicle wheel hub, while the remaining peripheral part, the brake band, is intended to cooperate with a disc brake caliper that , arranged mounted with one leg on each side on the said brake band, exerts a braking action on the vehicle. The brake band may be of a solid type or, as in the examples shown in the accompanying figures, of a ventilated type. The ventilated strip comprises two strips connected together by means of a plurality of bridges or connecting elements, in order to define circulation channels for the cooling air.
    [004] With reference to the disk and its axis of rotation, any direction parallel to said axis of rotation is intended for axial, for direction radial any direction perpendicular to the axis of rotation and incident therewith, and for tangential or circumferential is any tangential direction to a circumference centered on said axis of rotation and extending in a plane that is perpendicular to said geometric axis or a circumferential direction coinciding with said circumference.
    [005] It is also known that, when the brake is applied, the friction between the brake caliper pads and the surface of the braking bands generates a high amount of heat that needs to be dissipated. The heat generated causes the initiation of several unwanted phenomena, such as the components overheating and the consequent expansion and thermal deformation of the same.
    [006] With reference to disc brakes, the need is particularly felt to produce the brake band with a material that, in addition to ensuring the desired friction characteristics, is able to keep its mechanical characteristics as much as possible unchanged when increases in operating temperature happen. With this in mind, it is particularly suitable to manufacture, for example, the cast iron brake band.
    [007] Similarly, there is a particularly felt need to produce the support bell with a material that is as light as possible to reduce the mass of the disc, to begin with, and consequently the unsprung masses of the vehicle. In view of this, it is particularly suitable to manufacture the support bell in a light alloy, for example, an aluminum alloy.
    [008] With reference to the prior art discs, it is noted that deformations due to thermal stresses involve disadvantages of disc brake operation, first of all the irregular wear of the brake caliper pads. This is mainly because of the fact that, unlike the brake band, which tends to deform radially while remaining coplanar with itself, the support bell deforms while adopting a cone configuration that also determines the curving of the brake band , that is, the deformation of the brake band external to the plane where it initially extends. In essence, the deformation of the support bell determines the arching and, therefore, the loss of coplanarity of the brake band.
    [009] From what has been reported before, the dual need to maintain the transmission of the braking torque from the brake band to the support bell unchanged is apparent, while allowing the brake band to expand radially because of the thermal stresses at which it is submitted, in a way that is as independent as possible from the support bell.
    [010] EP Patent 1092889, in the name of the same Applicant, discloses a disk in which the aluminum alloy bell and the cast iron brake band are mutually connected by a plurality of stainless steel pins. These pins, attached to the brake band and released on the bell, ensure the band the possibility of expanding radially.
    [011] This solution is particularly advantageous from many points of view, however, it is particularly expensive and complex from a constructive point of view. In addition, the reduced section of the steel pins causes apparent deformation peaks in the material during the phase of transmission of the braking torque from the web to the bell.
    [012] It is also known from US patent 6,152,270, in the name of the same Claimant, a disc having a cast iron brake band and a light alloy support bell. The two parts produced by successive mergers are produced in order to glue to be mutually coupled. This solution, while being inexpensive and easy to implement, does not ensure a constant coupling between the brake band and the bell, also under a condition of strong thermal bands.
    [013] From EP 1426644 it is known to manufacture a disc for a disc brake having a brake band in a first material and a bell made from a second material. This document shows different solutions that allow the coupling of the bell to the brake band by means of a plastic deformation of the bell material in a coupling part of the band or, alternatively, to melt the bell around protuberances of the band.
    [014] Not even this known solution, although satisfactory from many points of view, allows to obtain a coupling between band and bell that ensures the transmission of the band's torque to the hub during high and repeated thermal bands, both because of the geometry of the proposed geometric coupling between band and bell and because of the conical deformation of the bell, which further deteriorates the geometric coupling between bell and band.
    [015] From the document DE 3823146 it is known to manufacture a braking disc in two parts, a brake band and a bell, which are mutually connected by a geometric coupling part joined by welding. Even this solution, although satisfactory from many points of view, has geometry of the geometric coupling between the brake band and the bell that allows to guarantee a safe transfer of the torque of the band to the hub, also under heavy braking conditions and during high and repeated thermal ranges. In addition, in this solution, no measures to reduce the conical deformation of the bell are not proposed, which further aggravates the limits of the proposed geometric coupling.
    [016] Document ES 8202409, from the same Applicant, proposes a one-disc solution for a disc brake composed of two components, a brake band and a bell, where the bell is fused after manufacturing the brake band in an appendix of the brake band that protrudes axially, thus making a part of recess both in the circumferential and in the axial direction. Again, a solution like this, although satisfactory in many points of view, does not have a geometry of the geometric coupling between brake band and bell in this fusion operation that allows a constant and durable transmission of torque, also under repeated braking actions heavy.
    [017] US 2007119667 also shows a disk obtained by successively melting a bell over a prefabricated brake band, as well as US 6,152,270, by the same Applicant. In these solutions, the bell has a coupling end on the band that is collapsed radially in order to receive a radial indentation of the brake band.
    [018] GB 2107012 also shows a similar solution, where the brake band is flooded with radial indentation inside the bell body.
    [019] A solution that is similar to those described above is given in US 7,861,832. Other solutions are described in WO 2006/046258 and EP 1128084.
    [020] All these solutions, although satisfactory in many points of view, do not allow a good cohesion between the material of the bell and the material of the band, whose cohesion remains unchanged during the repeated and heavy braking actions that are typical, for example. example, of a vehicle, for example, of a sports type, or of a commercial vehicle, thus limiting the ability to transfer the braking torque from the band to the hub and sometimes involving the arrangement of small gaps in the coupling between the band brake and the bell.
    [021] Therefore, the aim of the present invention is to design a disc for a disc brake that has structural and functional characteristics such as to satisfy the needs mentioned above, while eliminating the disadvantage reported with reference to the prior art.
    [022] A problem like this is solved by a brake band for a disc brake disc according to claim 1, as well as by a bell for a disc brake disc according to claim 7, a disc for a disc brake according to claim 10, a method for making a disc for a disc brake according to claim 12, and an apparatus for producing a brake band according to claim 14.
    [023] Additional features and advantages of the disc brake disc according to the invention will be understood from the description reported below of examples of preferred implementation thereof, given by way of indication, and not limitation, with reference to the attached figures, in which: - Figure 1 represents a disc brake disc from the wheel side in perspective view; - Figure 2 represents in perspective the disk of figure 1 from the vehicle side; - Figure 3 shows in perspective a brake band on the side of the wheel; - Figure 4 represents in perspective the brake band of figure 3 from the vehicle side; - Figure 5 represents in perspective view a disk bell for a disk brake on the vehicle side; - Figure 6 represents in perspective a detail of the coupling part of a bell on the vehicle side; - Figure 7 represents in perspective view a detail of a brake band on the side of the wheel; - Figure 8 represents a detail of a section obtained with a radial plane in a disc for disc brake according to figure 1; - Figure 9 represents a detail of a section according to a radial plane rotated circumferentially with respect to the section plane of figure 8; - Figure 10 represents a detail of a perspective view, partly in section, of a brake band, in which the section is obtained according to a radial foreground; - Figure 11 illustrates a detail of a perspective view of a brake band, partially in section according to a radial plane rotated circumferentially with respect to the radial plane of the section of figure 10; - Figure 12 represents a detail of a section according to the radial plane of the brake band section of figure 10; - Figure 13 shows a detail of a section according to the radial plane of figure 11 of the brake band of figure 11; - Figure 14 represents a section according to a radial plane of a disc for disc brake according to an additional modality; - Figure 15 represents a section according to a radial plane rotated circumferentially with respect to the section plane of figure 14 of the disk of figure 14; - Figure 16 illustrates a section according to a radial plane of a disc for disc brake according to an additional modality; - Figure 17 represents a section according to a radial plane rotated circumferentially with respect to the radial section plane of figure 16 of the disk of figure 16; - Figure 18 represents a detail of a section obtained with a radial plane of a disc according to an additional modality; - Figure 19 represents a detail of a section according to a radial plane rotated circumferentially with respect to the radial plane of figure 18 of the disk of figure 18; - Figure 20 represents in perspective view from the wheel side a disc for disc brake according to an additional mode; - Figure 21 represents in perspective view from the vehicle side the disk brake disc of figure 20; Figure 22 represents in perspective view a disc brake band according to figure 20 from the wheel side; - figure 23 represents a perspective view from the vehicle side of the brake band of figure 22; - Figure 24 represents in perspective view, partially in section, a detail of the disc for disc brake according to figure 20; - Figure 25 represents a section according to a radial plane of the disk of figure 20; - Figure 26 represents a detail of a section according to a radial plane rotated circumferentially with respect to the radial section plane of figure 25 of the disk of figure 20; - Figure 27 represents in axonometric view a sectioned detail according to a radial plane of the brake band according to figure 22; - Figure 28 represents in axonometric view a sectioned detail according to a radial plane rotated circumferentially with respect to the radial section plane of figure 27 of a brake band according to figure 22; - Figure 29 represents a mold for the manufacture of a disc for disc brake according to a first modality; - Figure 30 represents a mold for the manufacture of a disc for disc brake according to an additional modality.
    [024] With reference to the figures mentioned above, a disc brake disc according to the invention and intended to be used in a vehicle disc brake, for example, an automobile or a commercial vehicle, is indicated in a manner overall by 1.
    [025] Disc 1 has a substantially circular conformation that extends around an axis of symmetry therein, indicated by X-X, as well as an axis of rotation.
    [026] Disc 1 comprises a support bell 3 and a brake band 2 coaxial to the support bell 3.
    [027] According to one embodiment, said disc 1 has one or preferably two plates 24, 25 having two opposite braking surfaces 4, 5 suitable for cooperating with the pads 64 of an arranged brake caliper mounted with one leg on each side of said brake band 2.
    [028] Said disc for disc brake 1, said brake band 2 and said bell 3 have an axial direction AA coinciding with said axis of rotation XX or parallel to it, a radial direction RR that defines an external direction radial RE when going away from said axis of rotation XX, as well as an internal radial direction RI when approaching said axis of rotation XX. Said components additionally define a circumferential direction T-T exactly perpendicular to said axial direction A-A and to said radial direction R-R.
    [029] According to one embodiment, said brake band 2 has an inner edge radially 6 facing said axis of rotation X-X, and an outer edge radially 7 facing away from said axis of rotation X-X.
    [030] According to an embodiment, said brake band 2 is made of a first material suitable for the braking action exerted by the pads 64 on the braking surfaces 4, 5.
    [031] For example, but not necessarily, said brake band is made of cast iron, preferably, but not necessarily, a gray cast iron, or alternatively titanium, or steel, preferably, but not necessarily, stainless steel.
    [032] According to one embodiment, said brake band 2 is produced by fusion. Preferably, said brake band 2 on the opposite braking surfaces 4, 5 thereof is machined, for example, but not necessarily, with a machine tool, in order to have a predefined flatness of the braking surfaces 4, 5 and parallelism between the two braking surfaces 4 and 5.
    [033] According to one embodiment, said brake band 2 has at least one extension 8 for coupling with bell 3. According to one embodiment, during the production process of brake band 2, said coupling extension 8 it is not machined to maintain a surface roughness that is typical, for example, of melt making.
    [034] According to one embodiment, the bell 3 is suitable for coupling the disc 1 to a hub of a vehicle, by means of, for example, a fixing flange of the same which is arranged substantially transversely to said axis of rotation XX and indicated in the figures with reference 30.
    [035] According to an embodiment, said coupling extension 8 from brake band 2 to bell 3 is made integrally or in a single piece with said brake band, for example, but not necessarily, in a single piece with a brake band plate 2, for example, but not necessarily, the plate confronting the vehicle wheel.
    [036] According to one embodiment, said coupling extension 8 of the brake band 2 forms a geometric coupling 9 with said bell 3 to transmit a braking action from the brake band 2 to the bell 3. According to with one embodiment, said geometric coupling 9 has a predefined geometric coupling profile.
    [037] According to one embodiment, during the brake band manufacturing process, all surfaces of the geometric coupling 9 of the brake band are produced while avoiding machining operations, in order to have surfaces of the geometric coupling 9 having a roughness substantially obtainable through, for example, the fusion process.
    [038] According to an embodiment, the coupling of said bell 3 with said brake band 2 occurs by fusion, preferably, but not necessarily, providing the bell 3 arranged in the geometric coupling 9 of the brake band 2, for example, with the bell over the outer brake band radially, avoiding the use of another connection component between band 2 and bell 3. According to one modality, in order to obtain the fusion of the bell in the brake band, the said bell 3 is made of a second material different from said first material of band 2. Preferably, but not necessarily, said second material of bell 3 has a different melting point with respect to the melting point of the material of brake band 2 Preferably, but not necessarily, said melting point of the bell material 3 is lower, for example, but not necessarily, also substantially lower, with respect to the melting point of the brake band material 2.
    [039] According to one embodiment, said bell 3 is made of aluminum or, alternatively, aluminum alloys, or magnesium or alloys thereof.
    [040] According to one embodiment, said geometric coupling 9 has the first circumferentially spaced teeth or indentations 10 of the band 2 that extend axially to be received firmly in the first axial seats 11 of the bell 3.
    [041] According to a modality, said geometric coupling 9 has, spaced circumferentially, the second teeth, or indentation 12, of the brake band 2, whose indentation extends radially and being displaced circumferentially with respect to said first teeth axial 10, and extends substantially radially in order to be received firmly at the second radial seats 13 present in the bell 3 and shaped such as a cavity with a wall 14 surrounding said cavity extending substantially radially, and a bottom dead end 15.
    [042] According to one embodiment, said second radial indentation 12 is displaced axially with respect to said first axial indentation 10.
    [043] According to one embodiment, said geometric coupling 9 has a third axial indentation having, circumferentially spaced, the third seats 16 in the brake band modeled such as a cavity with the walls 18 that surround said seat 16 extending axially , and a dead end 19.
    [044] According to one embodiment, said third axial band seats 16 are aligned circumferentially with said first axial band teeth 10.
    [045] According to an embodiment, said third axial band seats 16 are displaced radially with respect to said first axial band teeth 10.
    [046] According to one embodiment, said third axial band seats 16 are displaced circumferentially with respect to said second radial band indentation 12.
    [047] According to one embodiment, said geometric coupling 9 has a fourth indentation having, circumferentially spaced, the fourth seats 20 in the brake band 2 having the supporting walls 21 according to planes that are substantially parallel and opposite in the direction substantially parallel to the radial direction RR and suitable for transmitting circumferential actions between the brake band 2 and the bell 3 and suitable for firmly receiving the teeth 22 of the bell. According to one embodiment, said support walls 21 of said fourth seats 20 are obtained by means of fragment removal machining, in order to ensure the flatness of said support walls 21 and, optionally, but not necessarily, the parallelism the same. Alternatively, said support walls 21 are made according to radial planes.
    [048] According to one embodiment, said fourth seats 20 are arranged circumferentially aligned with said first axial band teeth 10.
    [049] According to one embodiment, said fourth seats 20 are made on said first axial band teeth 10, for example, but not necessarily, on the free end of said axial band teeth 10.
    [050] According to an embodiment, said geometric coupling 9 is provided in an extension 8 having an axial protrusion 23 that protrudes axially from said one or more plates 24, 25 in the direction of said bell 3. According to an embodiment , said brake band 2 has the two plates 24, 25 spaced apart by the spacing elements or spacers 26 to form, between said plates 24, 25, a ventilation channel or gap 27 of the brake band 2.
    [051] According to one embodiment, between said ring-shaped part (s) 24 and 25 and said extension 8 for coupling bell 3, at least one circumferential recessed channel 28 is provided, for example, arranged lowered with respect to a braking surface, and suitable, for example, to limit the transmission of strain strains of the plate or plates 24 and 25 for said coupling extension 8, avoiding tensioning the geometric coupling 9 between the brake band 2 and bell 3.
    [052] According to one embodiment, said circumferential recessed channel 28 is provided radially in the inner periphery and facing the X-X axis of rotation of said braking surface (s) 4, 5.
    [053] According to an embodiment, said coupling extension 8 is joined to the plate facing the vehicle wheel, thus forming a circumferential channel 28 arranged close to the radially inner edge 6 of the brake band 2.
    [054] According to one embodiment, said brake band 2 has a cylindrical braking surface 29 facing the rotation axis XX and suitable for receiving the braking action of a braking device, for example, but not necessarily, a brake shoe device such as, for example, but not necessarily a parking brake system.
    [055] According to an embodiment, said cylindrical braking surface 29 is provided in said coupling extension 8 of the brake band 2 to the bell 3.
    [056] According to one embodiment, disk bell 3 for disk brake 1 extends around the axis of rotation XX and has a flange 30 for connecting bell 3 to a hub of a vehicle, preferably arranged transversely with respect to to said axis of rotation XX. According to one embodiment, a bell wall 31 extends from the outer edge of said flange 30, which protrudes from said flange 30 in the direction of at least one coupling extension 8 of the brake band 2.
    [057] According to an embodiment, said bell 2 has a part of said wall 31 for coupling with said coupling extensions 8 of the brake band 2, forming a geometric coupling 9 with said band 2 to transmit an action of braking from band 2 to bell 3.
    [058] According to one embodiment, said geometric coupling 9 is obtained by fusing, preferably, but not necessarily, the bell 3 in the brake band 2 obtained previously without the use of another connecting component between the band 2 and the bell 3. According to one embodiment, said bell 3 is made of a second material different from the first material with which the brake band 2 is obtained, for example, but not necessarily, a second bell material 3 having a point different melting point with respect to the melting point of the brake band material 2, preferably, but not necessarily, a melting point of the bell lower than the melting point of the brake band material 2.
    [059] According to one embodiment, said geometric coupling 9 has, circumferentially spaced, the first axial seats 11 of the bell 3 suitable for internally receiving first teeth, or a dentation 10, of the axially extending brake band 2.
    [060] According to one embodiment, said geometric coupling 9 has, spaced circumferentially, the second radial seats 13 that extend substantially in the radial direction in said bell 3 and are in the form of a cavity with a wall 14 that surrounds said cavity, in which said wall 14 extends substantially radially until reaching a bottom of cavity without exit 15. Said cavities being suitable to firmly receive second teeth, or the indentation 12, of the radially extending brake band 2, being displaced circumferentially with respect to the first axial teeth 10 of the brake band 2.
    [061] According to an embodiment, said second radial seats 13 are suitable for receiving said second radial dentition 12 of the brake band 2 and are arranged axially displaced with respect to said first axial seats 11 suitable for receiving said first dentition axial 10 of the brake band 2.
    [062] According to one embodiment, said geometric coupling 9 has a third axial toothing having, circumferentially spaced, the third axial teeth 17 suitable for being firmly received at the third seats 16 provided in the brake band 2 in the form of a cavity with a wall 18 surrounding said seat 16 extending axially to reach a dead end 19.
    [063] According to one embodiment, the third axial bell teeth 17 are suitable for being firmly received in said third axial band seats 16 and are circumferentially aligned with said first axial seats 11 suitable for receiving said first band teeth axial 10.
    [064] According to one embodiment, said third axial bell teeth 17 are suitable to be received at said third band seats 16 and are displaced radially with respect to said first axial bell seats 11, suitable to receive said first ones axial band teeth 10.
    [065] According to an embodiment, said third bell teeth 17, suitable to be received in said third axial band seats 16, are circumferentially displaced with respect to said second seats 13 suitable to receive said second radial band denting 12.
    [066] According to one embodiment, said geometric coupling 9 has a fourth indentation having, circumferentially spaced, the fourth teeth 22 suitable to be received firmly in the fourth seats 20 of the brake band 2, having opposite supporting walls suitable for cooperating with the support walls 21 according to planes that are substantially parallel and opposite, arranged in the direction substantially parallel to the radial direction RR and suitable for transmitting circumferential actions between the brake band 2 and the bell 3.
    [067] According to an embodiment, said fourth bell teeth 22 are suitable to be received at said fourth seats 20 and are provided circumferentially aligned with said first bell seats 11 suitable to receive said first axial band teeth 10 .
    [068] According to one embodiment, said fourth bell teeth 22, for said fourth seats 20, are made projecting from said first bell seats 11 suitable for receiving said first axial band teeth 10.
    [069] According to one embodiment, said bell 3 comprises a connecting flange 30 for a vehicle hub, as well as a wall 31 projecting from said flange 30 forming, with part of it, a firm geometric coupling 9 between the bell 3 and the brake band 2 obtained by cofusing the bell, for example, but not necessarily, in the prefabricated brake band. According to one embodiment, said wall 31 comprises a first surface 32 oriented in the direction of the axis of rotation X-X, and an opposite surface 33 oriented away from said axis of rotation X-X.
    [070] According to a general embodiment, not necessarily according to one of the preceding embodiments, a bell 3 has a bell wall 31 that protrudes from a connecting flange 30 to a hub of a vehicle, wherein said wall bell 31 comprises at least one circumferential channel 34.
    [071] This modality is particularly suitable for any type of disc brake in order to limit the transmission of stresses to the connection flange 30.
    [072] According to one embodiment, a disc brake disc comprises a circumferential channel arranged at the base of the brake band near the coupling thereof with a bell, for example, but not necessarily, lowered with respect to a braking surface , and said bell comprises at least one additional circumferential channel arranged preferably, but not necessarily, near a connection flange thereof to a hub of a vehicle.
    [073] Because of this advantageous configuration, in the case of mechanical or thermal tension of the brake band, it will be able to deform, while changing its angular position in relation to the bell wall, because of the decoupling obtained with the circumferential channel arranged in the base of the brake band, and the possible deformation of the bell wall will not affect the angular position of the flange to connect the bell to the hub, because of the provision of the second circumferential channel of the bell.
    [074] From the tests that have been carried out, it is shown that the provision of these two circumferential channels arranged at the base of the brake band and on the bell wall allows to obtain a considerable reduction of arching for the brake band, or deformation of the brake band brake external to a transverse plane with respect to the axis of rotation.
    [075] According to an embodiment, said at least one circumferential channel 34 provided in the wall 31 of the bell 3 has its opening oriented radially in the direction of the axis of rotation X-X.
    [076] According to one modality, said at least one circumferential channel 34 has its opening oriented radially away from the axis of rotation XX.
    [077] According to a form of rotation, said bell wall 31 has an arcuate portion thereof having the first inner wall surface 32 and the second outer wall surface 33 both arched to define a wall section surrounding the said at least one circumferential bell channel 34, giving a rounded or toroidal external shape to the bell wall 31.
    [078] According to one embodiment, said circumferential bell channel 34 is arranged close to the end of the bell wall 31 joined to said flange 30.
    [079] According to one embodiment, a second circumferential channel 35 is provided in said bell wall 31. According to one embodiment, said first circumferential channel 34 and said second circumferential channel 35 open in opposite directions. According to one embodiment, said first circumferential channel 34 and said second circumferential channel 35 form a section of the bell wall 31 obtained with a radial plane passing through the axis of rotation X-X having a sinusoidal shape.
    [080] According to one embodiment, said first circumferential channel 34 and said second circumferential channel 35 are displaced axially from each other along said bell wall 31. According to one embodiment, a section of bell wall 31 it has an outer surface 42 thereof and / or an inner surface 43 thereof having a cylindrical shape. According to one embodiment, said at least one circumferential bell channel 34 or 35 is provided in the wall thickness of the bell wall 31, in order to reduce the radial mass of the bell 3. According to one embodiment, said wall Near the said geometric coupling 9 between said band 2 and said bell 3, there is a rim with a ring rim 36 suitable for surrounding the coupling 9, for example, in order to limit the radial deformation thereof during the disc tension.
    [081] According to one modality, a disc for disc brake 1 comprises a brake band 2 made according to any of the modalities described previously, and a bell according to any of the modalities described previously.
    [082] According to one embodiment, bell 3 is cast into a prefabricated brake band 2. Said bell 3 comprises a connecting flange 30 for a hub and a wall 31 projecting from said flange 30 forming the firm geometric coupling 9 between bell 3 and brake band 2 obtained by cofusion. According to one embodiment, said wall 31 comprises a first surface 32 oriented in the direction of the axis of rotation X-X, and a second opposite surface 33 oriented away from said axis of rotation X-X. According to an embodiment, said bell wall 31 comprises at least one circumferential channel 34 suitable for limiting the strain transmission in deformation of the band 2 and / or the wall 31 to said connection flange 30. According to an embodiment , said at least one circumferential channel 34 has its opening oriented radially in the direction of the axis of rotation XX. According to one embodiment, said at least one circumferential channel 34 has its opening oriented radially away from the axis of rotation X-X.
    [083] According to one embodiment, a brake band has at the radially 6 inner edge a substantially radial indentation that protrudes from said radially 6 inner edge of the brake band 2 in the direction of the rotation axis XX, where said radial dentation is indicated by reference 48 in the figures.
    [084] According to one embodiment, said radial dentition 48 is firmly received at seats 49 provided in bell 3, for example, seats that extend in the radial direction, which are obtained by cofusing the bell in the band.
    [085] According to one embodiment, said radial indentation 48 of the brake band 2 ends on a cylindrical internal surface 43 of the wall 31 of the bell 3. According to one embodiment, said radial indentation 48 opens radially within the bell 3 , facing the axis of rotation XX and forming a cylindrically extended part around said axis of rotation XX, indicated with reference 50 in the figures.
    [086] According to one embodiment, said cylindrical part 50 has on the inside a surface 29 suitable for cooperating with a braking device, for example, a brake shoe device, for example, but not necessary necessary, a parking brake system device.
    [087] According to one embodiment, the axial extension of said cylindrical part 50 is preferably limited in order to have an axial extension comparable to the thickness of a brake band plate.
    [088] According to one embodiment, a method for making a disc for a disc brake 1 comprises the steps of:
    [089] - produce a brake band 2 that extends around an axis of rotation XX defining one or two plates 24, 25 having two opposite braking surfaces 4, 5 suitable to cooperate with the pads 64 of a clamp arranged with one leg on each side of said brake band 2.
    [090] Said method provides the step of using, in order to produce said brake band, a first material suitable for the braking action exerted by the pads 64 on the braking surfaces 4, 5.
    [091] According to an embodiment, said method provides the step of defining an extension 8 for said brake band to couple with a bell 3.
    [092] According to one embodiment, said method additionally provides the step of producing said coupling extensions 8 of the integral brake band 2 or in a single piece with said brake band 2.
    [093] According to one embodiment, said method provides the step of defining for said coupling extension 8 of the brake band 2 a geometric coupling 9 with the bell 3 in order to transmit the braking action of the band 2 to the bell 3.
    [094] According to an embodiment, said method provides the step of obtaining said geometric coupling 9 by melting, preferably from bell 3 in the brake band 2, for example, by partially placing said bell over the radial part said band, leave said bell to remain radially external, without the use of another connecting component between band 2 and bell 3, and make said bell of a second material different from said first material of band 2, in which the said second material of the bell 3 has a different melting point with respect to the melting point of the material of the brake band 2.
    [095] According to one embodiment, said method additionally provides the step of defining, for said geometric coupling, the first circumferentially spaced teeth or a dentation 10 of the brake band 2 that extends axially to be received firmly in the first axial seats 11 of bell 3.
    [096] According to one embodiment, said method provides the additional step of defining, for said geometric coupling 9, the second circumferentially spaced teeth or a second indentation 12 of the brake band 2 that extends radially circumferentially displaced with respect to the said first axial teeth, said indentation 12 extending substantially radially and being suitable to be received firmly in the second radial seats 13 present in bell 3 and shaped such as a cavity with a wall 14 that surrounds said cavity extending substantially from radial shape to a dead end 15.
    [097] According to one modality, said bell is merged in said brake band, remaining radially external to the brake band. According to one embodiment, the bell 3 is obtained by co-melting aluminum in the brake band, for example, previously obtained in cast iron. The provision of radially arranged aluminum outside in the form of a circumferential ring creates a pre-compression in the radial direction of the geometric coupling between bell and suitable brake band to allow a good behavior of the disc also at high temperatures.
    [098] According to one embodiment, said method provides for the production of a brake band 2 having a geometric coupling 9 of predefined roughness, for example, a roughness obtainable through a fusion process, for example, but not necessarily , a fusion with sand or shells. Said method additionally provides the co-merging step on said brake band of a bell in order to obtain a microinterpenetration of the material of the bell in the predefined roughness of the geometric coupling of the brake band.
    [099] According to one embodiment, the apparatus for producing a brake band 2 for a disc 1 of a disc brake comprises a mold for producing a band having a mold cavity 37 for the band. Said brake band cavity 37 extends around an axis of rotation X-X and has one or two cavities suitable for defining the plates 24, 25 having two opposite surfaces suitable for defining the braking surfaces 4, 5.
    [0100] Said brake band cavity 37 is suitable for receiving a first material suitable for the braking action exerted by the pads on the braking surfaces.
    [0101] Said brake band cavity 37 has at least one cavity part suitable for defining a coupling extension 8 for a bell 3.
    [0102] Preferably, but not necessarily, said band cavity part is suitable for defining said coupling extension 8 of the brake band in communication or in a single cavity with which to define said brake band 2.
    [0103] According to one embodiment, said band cavity part defining said coupling extension 8 of the brake band 2 forms a cavity to define a geometric coupling with a bell 3 to transmit the braking action of the band 2 to bell 3.
    [0104] According to one embodiment, said cavity for defining said geometric coupling 9 is suitable for obtaining the geometric coupling 9 by melting, preferably from bell 3 on the predefined brake band 2 without the use of another connection component between said band and said bell.
    [0105] According to one embodiment, said cavity for defining said geometric coupling 9 has first cavities circumferentially spaced to define the first teeth or a dentation 10 of the band 2 that extends axially to be received firmly in the first axial seats of the bell 3.
    [0106] According to an embodiment, said cavity for defining said geometric coupling 9 has cavities spaced circumferentially for the second teeth or a dentation 12 of the band that extends radially and is circumferentially displaced with respect to said first axial teeth 10 and said indentation 12 extending substantially radially and being suitable to be received firmly at the second radial seats 13 present in bell 3 and shaped such as a cavity with a wall 14 surrounding said cavity extending substantially radially to a bottom dead end 15.
    [0107] According to one embodiment, an apparatus for producing a disc 1 comprises a first mold half 38 suitable for cooperating with a second mold half 39 to receive within a disc mold cavity 41 a pre-brake band fabricated and define, with said brake band and said walls of said cavity 41, a residual space for the fusion or co-merging on said band of a bell, in which said band is made according to any of the described modalities previously, and said residual cavity is suitable for producing a bell as defined in any of the embodiments described above.
    [0108] According to one embodiment, said apparatus also comprises trolleys 40 suitable for moving radially in said residual cavity 41 in order to define said residual space in order to obtain the fusion or cofusion on said band of a bell , as defined in any of the embodiments described above, for example, four axially slidable trolleys to define the outer bell surface.
    [0109] Thanks to the previously described modalities, it is possible to obtain a disc for a disc brake that is capable of transmitting the torque between the brake band and the bell by means of a shape coupling, preferably obtained by co-forming the bell over prefabricated brake band.
    [0110] The geometric coupling if particularly efficient during the braking action is also under abrupt and repeated braking actions, which cause high and repeated thermal stresses, also because of the provision of a circumferential channel obtained in the bell body.
    [0111] Preferably, the provision of a bell in materials that are lighter than the materials of the band allows to obtain a considerable reduction of the disc weights for disc brake.
    [0112] The geometric coupling described above allows you to fully exploit the characteristics of the bell material, for example, aluminum that contracts during its transition from liquid to solid. Therefore, thanks to the provision of the external bell arrangement with respect to the coupling part of the brake band, the aluminum of the bell when contracting surrounds the ring of the brake band material, for example, cast iron, filling exactly all the intermediate spaces, and naturally attaching to the coupling part of the band, which is purposely kept coarse.
    [0113] The shape of the geometric coupling has been properly designed so that the aluminum of the bell fits tightly into the shape of the coupling and securely locks the coupling between the band and the bell in all directions.
    [0114] From the tests that were performed for this, it is shown that the geometric shape of the proposed coupling between the band and the bell allows to thermally isolate the material of the bell, for example, aluminum, from the material of the brake band, for example , cast iron.
    [0115] The proposed coupling has additionally shown a particular elasticity, which additionally allows to compensate the stresses transmitted by the braking actions.
    [0116] The shape of the proposed geometric coupling has been shown to have the largest contact surface between the brake band and the bell, suitable for transmitting a higher braking torque value and therefore allowing the use of the braking disc thus obtained for any type of braking condition.
    [0117] The proposed geometric coupling has slots and teeth oriented according to the axial, radial and tangential, or circumferential direction, allowing, with the socket oriented in the axial and radial direction, the transmission of the braking torque and, with the oriented slots in the tangential direction, keep the axial restriction between the band and the bell.
    [0118] Despite the complex geometry of the geometric coupling between the band and the bell, the proposed shape is easy to produce.
    [0119] Furthermore, the arrangement of the bell particularly in aluminum in a more external diameter in relation to that of the geometric coupling part of the brake band, for example, in cast iron, allows a good contact between the two components in any operating conditions , even when the operating temperature changes.
    [0120] The co-merger of aluminum on cast iron allows for an excellent coupling between the bell and the brake band also in the case of a complex geometry, such as the geometry that was proposed, additionally generating pre-compression in the radial direction, which allows a good behavior of the disc at different temperatures.
    [0121] The geometry of the dragging or coupling area allows for an easy closure of the casing or half of the mold for the cofusion of the bell on the prefabricated band, limiting the number of machining operations that are necessary to obtain the brake disc to disk.
    [0122] It should be apparent that those skilled in the art, with the purpose of satisfying specific contingent needs, will be able to create several modifications and variations for the disc brake disc according to the invention, in any case all being within the scope protection of the invention as defined by the following claims.
    权利要求:
    Claims (16)
    [0001]
    1. Brake band (2) for a disc (1) of a disc brake, - said brake band (2) extending around an axis of rotation (XX) for the disc and - said band of disc brake (2) and said disc (1) defining an axial direction (AA) coinciding with said axis of rotation (XX) or parallel to it, a radial direction (RR) that defines a radially outward direction (RE) when going away from said axis of rotation (XX), as well as a radially inward direction (RI) when approaching said axis of rotation (XX), as well as a circumferential direction (TT) perpendicular to said axial direction ( AA) and said radial direction (RR); - said brake band (2) being made of a first material configured to receive a braking action exerted by the pads (64) on the braking surfaces (4, 5); - said brake band (2) having at least one coupling extension (8) configured for coupling to a bell (3), said bell (3) being configured to couple the disc (1) to a hub of a vehicle ; - said coupling extension (8) of the brake band (2) being integral or in a single piece with said brake band (2); - said coupling extension (8) of the brake band (2) is suitable to form a geometric coupling (9) with said bell (3) to transmit the braking action of the band (2) to the bell (3) ; - said geometric coupling (9) being obtained by preferably fusing the bell (3) on the brake band (2) without the use of another connecting component between the band (2) and the bell (3), said bell (3) being made of a second material different from said first material of the band (2); - said second bell material (3) having a different melting point with respect to the melting point of the first brake band material (2); - said geometric coupling (9) having, circumferentially spaced, first axial teeth, or indentation (10), of the band (2) which extend axially suitable to be received firmly in the first axial seats (11) of the bell (3); CHARACTERIZED by the fact that - said geometric coupling (9) has second circumferentially spaced radial teeth, or indentation (12), of the band (2) that extend radially from the band and are circumferentially displaced with respect to said first axial teeth (10) which extend substantially radially and are suitable to be securely received at second radial seats (13) defined by the bell (3).
    [0002]
    2. Brake band (2), according to claim 1, CHARACTERIZED by the fact that said geometric coupling (9) has a third axial toothing having, circumferentially spaced, third axial seats (16) in the band in the form of a cavity with a wall (18) surrounding said seat (16) extending axially and a dead end (19) and in which said third axial band seats (16) are circumferentially aligned with said first axial band teeth (10) and in which said third axial band seats (16) are displaced radially with respect to said first axial band teeth (10) and in which said third axial band seats (16) are displaced circumferentially with relation to said second radial band indentation (12).
    [0003]
    3. Brake band (2), according to claim 1 or 2, CHARACTERIZED by the fact that said geometric coupling (9) has a fourth indentation having, circumferentially spaced, fourth seats (20) provided in the brake band ( 2) and having support walls (21) according to planes that are substantially parallel and opposite in the direction substantially parallel to the radial direction (RR), suitable for transmitting circumferential actions between the band (2) and the bell (3) and adequate to firmly receive teeth (22) of the bell and in which said fourth seats (20) are present circumferentially aligned with said first axial band teeth (10) and in which said fourth seats (20) are made in said first teeth axial bands (10).
    [0004]
    4. Brake band (2), according to any one of the preceding claims, CHARACTERIZED by the fact that said geometric coupling (9) is provided in a coupling extension (8) having an axial protrusion (23) that protrudes axially from said one or two plates (24, 25) in the direction of said bell (3).
    [0005]
    5. Brake band (2), according to any of the preceding claims, CHARACTERIZED by the fact that between said plates (24, 25) and said coupling extension (8) to couple with the bell (3) there is at least one circumferential channel (28), for example, but not necessarily, a circumferential recessed channel, for example, arranged recessed with respect to a braking surface (4), suitable to limit the transmission of stresses deformation of the plate or plates (24, 25) for said coupling extension (8) and / or in which said recessed channel is provided in the inner periphery radially and facing the axis of rotation (XX) of said (s) (s) braking surface (s) (4, 5).
    [0006]
    6. Brake band (2), according to any of the preceding claims, CHARACTERIZED by the fact that said brake band (2) has a cylindrical braking surface (29) facing the axis of rotation (XX) and suitable for receiving the braking action of a brake shoe device similar, for example, to a parking brake system device and wherein said cylindrical braking surface (29) is provided in said coupling extension (8) for coupling the brake band (2) to the bell (3) and wherein said geometric coupling (9) is oriented so as to provide the ugly band (2) radially on top of said bell and facing radially to the axis of rotation (XX) and the bell (3) facing away from the axis of rotation (XX).
    [0007]
    7. Bell (3) for a disc (1) of a disc brake, - said bell (3) extending around an axis of rotation (XX) for the disc and - having a flange (30) to connect the bell to a hub of a vehicle and a bell wall (31) which, from said flange (30), is suitable to project in the direction of at least one coupling extension (8) of a brake band ( 2), said coupling extension (8) of the brake band (2) being integral or in one piece with said brake band (2); - said brake band (2) being made of a first material suitable for the braking action exerted by the pads (64) on the braking surfaces (4, 5); - said bell (3) for said disc (1) defining an axial direction (AA) coinciding with said axis of rotation (XX) or parallel to it, a radial direction (RR) that defines a direction radially outward ( RE) when going away from said axis of rotation (XX), as well as a radially inward direction (RI) when approaching said axis of rotation (XX), as well as a circumferential direction (TT) perpendicular to said axial direction (AA) and said radial direction (RR); - said bell (3) having, in a part of said wall suitable for coupling with said coupling extension (8) of the brake band (2), a geometric coupling (9) suitable for coupling with said brake band (2) to transmit the braking action from the brake band (2) to the bell (3); - said geometric coupling (9) being obtained by preferably fusing the bell (3) on the brake band (2) without the use of another connecting component between the band (2) and the bell (3), said bell (3) being made of a second material different from said first material of the band (2); - said second bell material (3) having a different melting point with respect to the melting point of the first brake band material (2); - said geometric coupling (9) having, circumferentially spaced, first axial seats (11) of the bell (3) suitable for securely receiving the first axial teeth, or dentation (10), of the axially extending band (2); CHARACTERIZED by the fact that - said geometric coupling (9) has, spaced circumferentially, second radial seats (13) present in the bell (3) that extend substantially radially and are similar in shape to a cavity with a wall (14 ) which surrounds said cavity extending substantially radially and a bottom without exit (15), said second radial seats (13) being suitable to firmly receive the second radial teeth, or dentation (12), from the band (2) which extend radially in a circumferentially displaced manner with respect to said first axial teeth (10).
    [0008]
    8. Bell (3), according to claim 7, CHARACTERIZED by the fact that said geometric coupling (9) has a third axial toothing having, circumferentially spaced, third axial bell teeth (17) suitable to be received firmly in third axial seats (16) in the band in the form of a cavity with a wall (18) surrounding said seat (16) extending axially and a bottom without exit (19) and in which said third axial teeth (17), suitable for being securely received in third axial band seats (16), are circumferentially aligned with said first axial seats (11) suitable for receiving said first axial band teeth (10) and wherein said third axial bell teeth (17) suitable for being firmly received in said third axial band seats (16) are displaced radially with respect to said first axial bell seats (11) suitable for receiving said first axial band teeth (10) and / or in which said geometric coupling (9) has a fourth indentation having, circumferentially spaced, four teeth (22) suitable to be firmly received at the fourth seats (20) in the band, having opposite supporting walls suitable for cooperate with the support walls (21) according to planes that are substantially parallel and opposite in the direction substantially parallel to the radial direction (RR) and suitable for transmitting circumferential actions between the band (2) and the bell (3) and in which said fourth bell teeth (22) suitable for being received in said fourth seats (20) are provided circumferentially aligned with said first bell seats (11) suitable for receiving said first axial band teeth (10) and in which said fourth bell teeth (22) for said fourth seats (20) are made projecting from said first bell seats (11) suitable for receiving said first axial band teeth (10).
    [0009]
    9. Bell (3), according to claim 7 or 8, CHARACTERIZED by the fact that said bell (3) comprises a flange (30) for connection to a hub and a wall (31) protruding from said flange ( 30) forming the close geometric coupling (9) between bell and brake band obtained by co-merging, said wall comprising a first surface (32) oriented in the direction of the axis of rotation (XX) and a second opposite surface (33) oriented towards away from said axis of rotation (XX) and said bell wall (31) comprising at least one circumferential channel (34) suitable for limiting the transmission of strain stresses from the brake band (2) and / or the wall (31 ) for said connection flange (30); and / or in which there is a second circumferential channel (35) in said bell wall (31) and / or in which said first circumferential channel (34) and said second circumferential channel (35) open in opposite directions.
    [0010]
    10. Disc for a disc brake (1), CHARACTERIZED by the fact that it comprises a brake band (2) as defined in any of claims 1 to 6 and a bell (3) as defined in any of the claims 7 to 9.
    [0011]
    11. Disc (1), according to claim 10, CHARACTERIZED by the fact that said brake band (2) is fused with a bell (3), said bell (3) comprising a flange (30) for connection to a hub and a wall (31) protruding from said flange (30) forming the close geometric coupling (9) between bell and brake band obtained by co-merging, said wall comprising a first surface (32) oriented in the direction of the axis of rotation (XX) and a second opposite surface (33) oriented away from said axis of rotation (XX) and / or said bell wall (31) comprising at least one circumferential channel (34) suitable for limiting transmitting strain stresses from the brake band (2) and / or the wall (31) to said connection flange (30); and / or in which there is a second circumferential channel (35) in said bell wall (31) and / or in which said first circumferential channel (34) and said second circumferential channel (35) open in opposite directions and / or wherein said first circumferential channel (34) and said second circumferential channel (35) form a section of the bell wall (31), obtained with a radial plane passing through the axis of rotation (XX), having a sinusoidal shape.
    [0012]
    12. Method for making a disc for a disc brake (1) comprising the steps of: - producing a brake band (2) defining an extension around an axis of rotation (XX) and defining one or two plates (24 , 25) having two opposite braking surfaces (4, 5) suitable for cooperating with pads (64) of an arranged brake caliper mounted with one leg on each side of said brake band (2); defining a body having an axial direction (AA) coinciding with said axis of rotation (XX) or parallel to it, a radial direction (RR) that defines a direction radially outward (RE) when going away from said axis of rotation (XX), as well as a radially inward direction (RI) when approaching said axis of rotation (XX), as well as a circumferential direction (TT) perpendicular to said axial direction (AA) and said radial direction (RR) ; - for said brake band (2), use a first material suitable for the braking action exerted by the pads (64) on the braking surfaces (4, 5); - for said brake band (2), define at least one coupling extension (8) for coupling to a bell (3); - producing said coupling extension (8) of the brake band (2) integrally or in a single piece with said brake band (2); - for said coupling extension (8) of the brake band (2), define a geometric coupling (9) with said bell (3) to transmit the braking action of the brake band (2) to the bell (3 ); - obtaining said geometric coupling (9) by fusing preferably the bell (3) on the brake band (2) without the use of another connecting component between the band (2) and the bell (3), making said bell (3) of a second material different from said first material of the band (2); said second bell material (3) having a different melting point with respect to the melting point of the first brake band material (2); - for said geometric coupling (9), define first circumferentially spaced axial teeth, or indentation (10), of the band (2) that extend axially to be received firmly in the first axial seats (11) of the bell (3) ; CHARACTERIZED by the fact that it provides the additional step of: - for said geometric coupling (9), define second circumferentially spaced radial teeth, or indentation (12), of the band that extend radially in circumferentially displaced with respect to said first axial teeth (10), said second radial teeth extending substantially radially and being suitable to be securely received at second radial seats (13) present in the bell (3) and having the shape of a cavity with a wall (14 ) that surrounds said cavity extending substantially radially and a bottom without exit (15).
    [0013]
    13. Method for making a disc for a disc brake (1), according to claim 12, CHARACTERIZED by the fact that it is provided to make said geometric coupling (9) in order to arrange the band (2) on top of said bell and radially facing the axis of rotation (XX) and the bell (3) facing away from the axis of rotation (XX) and / or comprising the additional steps of providing the cofusion of the bell on a brake band previously prepared in order to provide the arrangement of the bell coupling part radially external to the coupling part of the brake band.
    [0014]
    14. Apparatus for producing a brake band (2) for a disc (1) of a disc brake, said apparatus comprising a mold for producing said band having a band cavity (37), - said band cavity brake (37) extending around an axis of rotation (XX) and - having one or two cavities suitable for defining the plates (24, 25) having two opposite surfaces suitable for defining braking surfaces (4, 5) for cooperate with pads (64) of an arranged brake caliper mounted with one leg on each side of said brake band (2); - said band cavity (37) defining an axial direction (AA) coinciding with said axis of rotation (XX) or parallel to it, a radial direction (RR) that defines a direction radially outward (RE) when going to away from said axis of rotation (XX), as well as a radially inward direction (RI) when approaching said axis of rotation (XX), as well as a circumferential direction (TT) perpendicular to said axial direction (AA) and the said radial direction (RR); - said brake band cavity (37) being suitable to receive a first material suitable for the braking action exerted by the pads (64) on the braking surfaces (4, 5); - said brake band cavity (37) having at least one cavity part having at least one cavity part suitable for defining a coupling extension (8) for coupling to a bell (3), said bell (3) being suitable for coupling the disc (1) to a hub of a vehicle; - said cavity part suitable for defining said coupling extension (8) of the brake band (2) being in communication or a single cavity with which to define said brake band (2); - said cavity part defining said coupling extension (8) of the brake band (2) forming a cavity to define a geometric coupling (9) with said bell (3) to transmit the braking action of the band (2 ) for the bell (3); - said cavity to define said geometric coupling (9) being suitable to obtain said coupling (9) by preferably melting the bell (3) on the brake band (2) without the use of another connecting component between the band (2) and the bell (3), said bell (3) being made of a second material different from said first band material (2); said second bell material (3) having a different melting point with respect to the melting point of the first brake band material (2); - said cavity to define said geometric coupling (9) having, circumferentially spaced, first cavities for first axial teeth, or indentation (10), of the band (2) which extend axially to be received firmly in first axial seats (11 ) of the bell (3); CHARACTERIZED by the fact that - said cavity to define said geometric coupling (9) has cavities spaced circumferentially for second radial teeth, or dentation (12), of the band extending radially circumferentially displaced with respect to said first axial teeth (10), said second radial teeth (12) extending substantially radially and being suitable to be securely received at second radial seats (13) present in the bell (3) and being shaped such as a cavity with a wall (14 ) that surrounds said cavity extending substantially radially and a bottom without exit (15).
    [0015]
    15. Apparatus for producing a disc (1), CHARACTERIZED by the fact that it comprises a first mold half (38) which, cooperating with a second mold half (39), is suitable for receiving inside a disc mold cavity (41) a brake band as defined in any one of claims 1 to 6, defining, with said brake band (2) and said cavity (41), a residual space for the fusion or co-merging on said band of a bell as defined in any one of claims 7 to 9.
    [0016]
    16. Apparatus according to claim 14 or 15, CHARACTERIZED by the fact that it comprises trolleys (40) suitable for moving radially in said cavity (41) to define said residual space for the fusion or co-merging on said band of a bell as defined in any one of claims 7 to
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    同族专利:
    公开号 | 公开日
    EP2668414A1|2013-12-04|
    ITMI20110090A1|2012-07-27|
    US20140151166A1|2014-06-05|
    WO2012101561A1|2012-08-02|
    EP2668414B1|2020-06-03|
    CN103328850B|2016-08-10|
    US9695895B2|2017-07-04|
    CN103328850A|2013-09-25|
    RU2549594C2|2015-04-27|
    BR112013018576A2|2016-09-27|
    IT1403905B1|2013-11-08|
    RU2013139429A|2015-03-10|
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    法律状态:
    2018-12-18| B06F| Objections, documents and/or translations needed after an examination request according art. 34 industrial property law|
    2020-06-16| B06U| Preliminary requirement: requests with searches performed by other patent offices: suspension of the patent application procedure|
    2021-01-05| B09A| Decision: intention to grant|
    2021-02-23| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 23/01/2012, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    ITMI2011A000090|2011-01-26|
    ITMI2011A000090A|IT1403905B1|2011-01-26|2011-01-26|DISC FOR DISC BRAKES|
    PCT/IB2012/050293|WO2012101561A1|2011-01-26|2012-01-23|Disc for disc brakes|
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