• 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:
    This pulley device (2) for belt or chain comprises a bearing (20) provided with an outer ring (22), an inner ring (24) and at least one row of rolling elements (26) mounted in a rolling chamber (28) defined between the outer and inner rings, a pulley (30) rotatably connected to the outer ring and provided with an outer radial surface (32) for engagement with a belt or chain and less a hollow shaft (40A, 40B) adapted to receive a mounting screw of the pulley device on a support. The hollow shaft (40A, 40B) forms a unitary structure comprising a bushing (42) and a flange (48) integral with the bushing and which extends, from the bushing, radially outwards, with respect to a central axis (X40) of the hollow shaft to the level of the rolling chamber (28).
    公开号:FR3019866A1
    申请号:FR1453281
    申请日:2014-04-11
    公开日:2015-10-16
    发明作者:Alain Lloze；Laurent Cherioux；Thierry Prouteau；Mikael Lasserre；Pascal Mauroix
    申请人:SKF AB；
    IPC主号:
    专利说明:

    [0001] The invention relates to a pulley device as used, in particular in the case of a pulley device, and to a method for assembling such a device. motor vehicles. Such a device may relate to tensioning rollers for tensioning a chain or a belt for transmitting motion, accessory rollers, retractors, idle pulleys and any other means for supporting or returning a rotational movement.
    [0002] As is apparent from FR-A-2 923 281, such a pulley device is intended to be mounted on a support, such as a motor vehicle engine block, by means of a screw which passes through a hollow shaft disposed in the center of this device. In the embodiment of FIG. 7 of FR-A-2 923 281, the hollow shaft is formed by a bushing equipped with a spacer which bears against an inner ring of a bearing, which prevents deformation plastic sleeve under the effect of an axial force exerted by the screw. This gives overall satisfaction. This material of the prior art comprises a bearing chamber in which balls are arranged and which must be protected against external pollution by means of two sets of seals mounted on one of the rings of the bearing and which come rubbing against the other ring. These sets of seals are relatively expensive and require a specific assembly step, when manufacturing the known pulley device. This increases the cost of this equipment. It is these drawbacks that the invention intends to remedy more particularly by proposing a new pulley device for a belt or chain which is faster and more economical to manufacture than those of the state of the art, while presenting good protection properties of its running chamber vis-à-vis external pollution. For this purpose, the invention relates to a pulley device for a belt or chain comprising: a bearing provided with an external ring, an inner ring and at least one row of rolling elements mounted in a rolling chamber; defined between the outer and inner rings, - a pulley integral in rotation with the outer ring and provided with an outer radial surface engaging with a belt or chain and - at least one hollow shaft adapted to receive a mounting screw of the pulley device on a support. According to the invention, the hollow shaft of the pulley device forms a unitary structure which comprises a bushing and a flange integral with this bushing and which extends radially outwardly thereof from said bushing. a central axis of the hollow shaft, to the level of the rolling chamber. Thanks to the invention, the flange, which belongs to the structure of the hollow shaft, provides a barrier function between the rolling chamber and the external environment of the device, which protects the rolling chamber from external pollution. It is thus possible to overcome the usual sealing means, such as lip seals mounted on rigid structures, between the inner and outer rings. According to advantageous but non-obligatory aspects of the invention, such a device can incorporate one or more of the following features, taken in any technically permissible combination: - An outer radial edge of the collar forms a seal which cooperates with the outer ring and / or the pulley to isolate the rolling chamber from the outside of the device. - The collar is formed of a washer and a flange and the washer is located radially between the sleeve and the flange. - The washer is made of a material more rigid than the material of the flange and arranged to receive in axial support the head of a mounting screw of the device on a support and / or a relief of the support. - The sleeve is made of synthetic material. - The flange is made of synthetic material. - The sleeve and the flange are made of the same material. - The washer is metallic. - The synthetic material may be polyamide 6-6. - The material comprises reinforcing fibers, for example glass fibers. - The washer is provided with reliefs cooperating with complementary reliefs of the sleeve and / or the flange and participating in a relative immobilization of these parts. - The axial thickness of the washer is less than its radial width relative to a central axis of the hollow shaft. - The device comprises two identical hollow shafts each forming a unitary structure comprising a sleeve and a flange, while the sleeves are aligned along a central axis of the bearing and that the flanges are each arranged on one side of the rolling chamber, along of the central axis of the bearing. - The sleeve comprises reliefs, such as ribs, so as to cooperate with a bore of the inner ring, said sleeve being preferably mounted in force in said inner ring. In addition, the invention relates to a method of manufacturing a hollow shaft belonging to a device as mentioned above, the collar is formed of a washer and a flange. According to the invention, this method comprises at least one overmolding step of the sleeve and / or the flange on the washer. Preferably, the sleeve and the flange are made of the same material and overmolded at the same time on the flange.
    [0003] Finally, the invention relates to a method of assembling a pulley device of the type mentioned above, this method comprising preliminary steps of mounting the bearing and the pulley with the outer ring. According to the invention, this method comprises a step subsequent to the preceding steps and consisting in engaging inside the inner ring of the bearing a sleeve belonging to a unitary structure forming a hollow shaft, bringing the rolling chamber opposite , in an axial direction, a collar integral with the sleeve and belonging to the unitary structure. Alternatively, it can be planned to overmold the sleeve in the inner ring. In this case, the invention also relates to a method as mentioned above, this method being characterized in that it comprises a step of overmolding inside the inner ring of the bearing a sleeve belonging to a unitary structure forming a hollow shaft. The invention will be better understood and other advantages thereof will emerge more clearly in the light of the following description, an embodiment of a pulley device, a method of manufacture and of an assembly method in accordance with its principle, given solely by way of example and with reference to the accompanying drawings in which: - Figure 1 is a partially exploded axial section of a pulley device according to the invention, - FIG. 2 is a perspective view of a hollow half-shaft belonging to the pulley device of FIG. 1; FIG. 3 is a perspective view of the half-shaft of FIG. 2 at another angle and FIG. 4 is an axial section of the device of Figure 1 in the configuration of use.
    [0004] The pulley device 2 shown in the figures forms an idler pulley intended to be mounted on an engine block 4 partially shown in FIG. 4 and which is equipped with a boss 6 at the center of which is provided a tapping 7 for receiving a screw 8 engaged in the center of the device 2.
    [0005] The pulley device 2 comprises a ball bearing 20 which is formed of an outer ring 22, an inner ring 24 and two rows of balls 26 arranged in a rolling chamber 28 defined radially between the rings 22 and 24. Alternatively, the bearing 20 may comprise a cage for holding the balls in position 26. According to another variant, a single row of balls is provided. In addition, rolling bodies other than balls may be used in the bearing 20, including rollers or needles. The rolling chamber 28 is defined radially between an inner radial surface 228 of the ring 22 and an outer radial surface 248 of the ring 24, in which are provided torus section tracks for the partial reception of the balls 26. We note d22 the diameter of the surface 228, which is an internal diameter of the ring 22, and D24 the diameter of the surface 248, which is an outer diameter of the ring 24. X2 is a central and longitudinal axis of the pulley device 2 which is an axis of rotation of the rings 22 and 24 relative to each other. In the present description, the terms "axial" or "radial" are defined with respect to this axis, unless otherwise indicated. Thus, a direction is "axial", if it is parallel to the axis X2 and radial if it is perpendicular to and secant with this axis. A surface is axial if it is perpendicular to the axis X2 and radial if it is perpendicular to a radial axis with respect to the axis X2.
    [0006] A pulley 30 is immobilized on the outer ring 22, for example by gluing or overmolding. In the example of the figures, the pulley 30 is made of synthetic material and its inner radial surface 31 is provided with peripheral ribs 33 engaged in peripheral grooves 243 formed on the outer radial surface 241 of the ring 22. In a variant, the pulley 30 may be metallic and mounted tight or crimped on the outer ring 22. Note 32 the outer radial surface of the pulley 30, that is to say the surface of this pulley oriented radially outwardly relative to the X2 axis. This surface 32 is provided with peripheral grooves 34. In the configuration of use, and as represented in FIG. 4, a belt 100 made of synthetic material is mounted around the device 2 and internal peripheral ribs 104 of this belt are engaged in the grooves. 34, which contributes to guiding the belt 100 around the pulley 30. The surface 32 is therefore an engagement surface with the belt 100. Alternatively, a chain can be used in place of the belt 100. In in this case, the geometry of the surface 32 is adapted.
    [0007] Two half-shafts 40A and 40B are arranged in the internal radial volume V24 of the ring 24 while being each engaged in this volume by one side of the bearing 20. The half-shafts 40A and 40B are identical and, in the following, alone the half-shaft 40A is described in detail. This half-shaft 40A comprises a sleeve 42 with a circular cross section and centered on an axis X40 coincides with the axis X2 in mounted configuration of the half-shaft 40A in the device 2. The half-shaft 40A also comprises a washer 44 and a flange 46 which together define a flange 48, which extends radially outwardly from the sleeve 42, with respect to the axis X40 and the axis X2 when the half-shaft 40A is mounted in the device 2 .
    [0008] D48 denotes the outer diameter of the flange 48, that is to say the outer diameter of the flange 46. This diameter is defined by the outer radial edge 482 of the flange 48 which is circular. The washer 44 is located, radially with respect to the axis X40, between the bushing 42, which constitutes the inner or central radial portion of the half-shaft 40A, and the flange 46, which constitutes the outer radial portion thereof. In practice, the washer 44 is metallic, for example made of steel, while the parts 42 and 46 are made of synthetic material, in particular of polyamide 6-6 or of another synthetic material reinforced with fibers, such as glass or carbon. The manufacture of the half-shaft 40A can take place by overmolding the parts 42 and 46 on the washer 44. To ensure effective anchoring of the parts 42 and 46 on the washer 44 and according to an optional but advantageous aspect of the invention, the reliefs Additional information is provided on these parts. More precisely, and as can be seen in FIG. 3, the washer 44 is equipped with four tongues 442 which extend radially from and towards the axis X40 from its internal radial edge 441 and on which it engages the edge 421 of the sleeve 42 turned towards the washer 44. The edge 421 is provided with notches 422 of complementary shape of the tongues 442, which ensures an effective hooking between the parts 42 and 44. In the same way, the tabs 446 extend, radially to the axis X40 and outwardly, relative to the outer radial edge 445 of the washer 44. They are received in notches 466 formed on the internal radial edge 465 of the flange 46. This contributes to an firm immobilization between the parts 44 and 46. Alternatively, other attachment reliefs may be provided between the parts 42, 44 and 46. In particular, the tabs 442 and 446 may be replaced by notches in which engage tabs form respectively as shown in Figure 2, the sleeve 42 is equipped with four external axial ribs 423 which form localized extra thicknesses relative to the sleeve 42. The ribs 423 are regularly distributed around the X40 axis.
    [0009] D42 denotes the outside diameter of the sleeve 42 measured at a distance from the ribs 423. D42 'denotes the diameter of a tangent surface of the surface with the external radial surfaces of the ribs 423. The diameter D42' is strictly greater than the diameter 42 , the difference between these two diameters being equal to twice the radial thickness, vis-à-vis the axis X40, ribs 423.
    [0010] The internal diameter of the inner ring 24 is denoted d24. The diameter D42 is strictly smaller than the diameter d24, which makes it possible to introduce with play a part of the sleeve 42 opposite the washer 44 into the internal volume V24 of the ring 24. The diameter D42 'is equal to or slightly greater than the diameter d24, which allows the insertion of the sleeve 42 inside the volume V24 with a free support of the ribs 423 against the inner radial surface of the ring 24, possibly by deformation of the sleeve 42. Thus, the sleeve 42 is mounted in force in the ring 24. This contributes to a firm immobilization of the sleeve 42 in the volume V24. This is particularly useful when the two half-shafts 40A and 40B are mounted on the bearing 20, before the pulley device 2 is itself mounted on a support such as the engine block 4 by means of the screw 8. Thus, the ribs 423 provide a captive function of the half-shafts 40A and 40B relative to the rest of the device 2. Note V42 the internal volume of a sleeve 42 and 42 its inner diameter. During the assembly of the pulley device 2, the bearing 20 is pre-assembled during prior steps known per se, by assembling the elements 22, 24 and 26. The pulley 30 is then attached to the ring 22, according to one of the techniques envisaged above. Then, each of the half-shafts 40A and 40B is engaged in the volume V24 by aligning the bushings 42 on the axis X2, as represented by the arrow F1 for the half shaft 40A, which has the effect of bringing the flanges 46 opposite the rolling chamber 28, in a direction 028 parallel to the axis X2 and passing through the center of a ball 26. In other words, the flange 48, the flange 46 constitutes the outer radial portion extends radially outwards with respect to the axes X2 and X40 and from the sleeve 42 to the level of the rolling chamber 28 which it isolates from the outside, to the point that it It is not necessary to mount seals between the rings 22 and 24.
    [0011] Alternatively, the sleeve 42 of each half shaft 40A or 40B may be overmolded in the central bore of the ring 24 formed by the volume V24. For the purposes of this application, the fact that the flange 48 extends radially to the level of the rolling chamber 28 corresponds to the fact that the diameter D48 is strictly greater than the diameter D24. In fact, the diameter D48 is greater than the average of the diameters d22 and D24. In practice, the diameter D48 is even greater than the diameter d22, as is apparent from the figures. In mounted configuration half-shafts 40A and 40B, their flanges 48 are located on either side of the chamber 28, along the axis X2. The flange 46 is not plane and comprises an annular portion, flat and radial internal 461 connection to the washer 44, a frustoconical portion 462 divergent opposite the sleeve 42 away from the axis X40 and a planar and annular portion 463 which is perpendicular to the axis X40 and which defines the outer radial edge 482 of the flange 48. The non-flat structure of the flange 46 allows it to adapt to the geometry of the rings 22 and 24 which do not present not the same axial length.
    [0012] In the mounted configuration of a half-shaft in the device 2, as shown on the left of FIG. 1 or in FIG. 4, the washer 44 bears against an axial surface 242A or 242B of the ring 24, whereas the part 463 of the flange 46 is not in contact with the ring 22 or with the pulley 30. This is consistent with the fact that, in the configuration of use, the inner ring 24 does not rotate about the axis X2, no more than the half-shafts 40A and 40B, while the pulley 30 and the outer ring 24 rotate around this axis. The pulley 30 is equipped with ribs 36 which extend between two webs 35 and 37 respectively defining the inner radial 31 and outer 32 surfaces of the pulley 30. The ribs 36 stiffen the pulley 30 while being lighter than a solid mass. . In the mounted configuration of a half shaft 40A and 40B within the device 2, the edge 482 of the flange 48 extends close to the free inclined edges 362 of the ribs 36, defining with them a clearance J of the order of a few tenths of a millimeter. Thus, the edges 362 and 482 together constitute a labyrinth seal between each half-shaft 40A and 40B and the pulley 30, which helps to isolate the chamber 28 from the outside and to avoid its pollution.
    [0013] According to a not shown variant of the invention, and with an adaptation of the pulley 30, a lip may be provided on the outer radial edge 482 of the flange 48 and abut against a suitable surface of the pulley 30, to form a lip seal.
    [0014] Alternatively, the clearance J can be defined between the edge 482 and a lateral surface of the ring 22. Whether in the case of a labyrinth seal or in the case of a lip seal, the protection function of the chamber 28 with respect to external pollution is provided by the flange 48 and results from the simple assembly of the half shaft 40A or 40B, in the direction of the arrow Fl in FIG. 1, within the pulley device 2. In the configuration of Figure 4, the head 82 of the screw 8 bears against the washer 44 of the half shaft 40B, while the boss 6 bears against the washer 44 of the half-shaft 40A. Thus, the tightening of the screw 8 in the tapping 7 results in a force El axial thrust of the washer 44 closest to the head 82 against the inner ring 24. This axial thrust force induced, on the part of the boss 6 , a reaction force El which pushes the washer 44 closest to the motor unit 4 towards the ring 24. In other words, the ring 24 is pinched by the axial forces El and El which are exerted by metal parts, to namely, on one side, the head 82 and the washer 44 and, on the other side, the boss 6 and the washer 44.
    [0015] The axial thickness of the washer 44, measured parallel to the axis X40, and its radial width measured radially with respect to this axis, are noted e44.The value of the axial thickness e44 is less than the value of the width. radial (44. In practice, the ratio e44 / (44 is between 0.1 and 0.5, and preferably equal to 0.3.So, the washer 44 is adapted to, on the one hand, provide a function of transmission of the axial forces El and El and, secondly, allow the relative positioning of the parts 42 and 46 on either side of the washer 44. The washer 44 forms a spacer at the same time axially, since it makes it possible to transmit an axial force El or El, and radially, since it centers the parts 42 and 46 with respect to one another, it is noted that the washers 44 are in contact with the inner ring 24, which ensures a maintenance axial axis of the device 2 along the axis X2, relative to the engine block 4. All the constituent elements of the 20 and the pulley 30 can be mounted in a conventional manner during preliminary manufacturing steps of the device 2. It is then possible to set up the half-shafts 40A and 40B taking into account, on the one hand, the dimensions of the rod 8 and, secondly, the interface provided on the engine block 4, including the presence and dimensions of the boss 6. Thus, the assembly of the device 2 can be finalized when its conditions of use are determined. It is thus possible to prefabricate a large number of subassemblies, each comprising a bearing 20 and a pulley 30, and then to complete the manufacture of pulley devices 2 based on these preassembled assemblies by mounting one or more hollow shafts chosen according to the device mounting means 2 on the engine block 4. For example, the inner diameter d42 of the sleeves 42 can be adapted to the diameter of the screw 8 and the thickness e44 of the washers can be adapted to the lengths of the screw 8 and the boss 6. In other words, each hollow shaft 40A and 40B is chosen according to the mounting means of the device 2 on the engine block 4, which include the screw 8 and the boss 6. The invention is not limited to embodiment shown. Variations can be envisaged. The sleeve 42 may be made of metal. Similarly, the washer 44 may be made of synthetic material, in particular plastic material, possibly reinforced with fibers. The pulley 30 can form the outer ring of the bearing. In other words, the elements 22 and 30 shown in the figures can be constituted by a single piece. The socket of the hollow shaft may constitute the inner ring of the bearing. In other words, the elements 24 and 42 shown in the figures can be constituted by a single piece. Instead of being molded onto the washer 44, the sleeve 42 and / or the flange 46 can be mounted tight or crimped on the washer 44. It is particularly advantageous that the sleeve 42 and the flange 46 are made of the same material. This makes it possible to manufacture a half-shaft by installing the washer 44 in a mold and overmolding the parts 42 and 46 in a single operation. However, as a variant, the parts 42 and 46 can be made with two different materials, which makes it possible to use specific mechanical properties for each of these parts, by means of two-stage molding. The fact that the two half shafts 40A and 40B are identical is advantageous in terms of production. Alternatively, these two trees may not be identical. In particular, the lengths of the sockets 42 of the two half-shafts may be different. According to another variant, a single hollow shaft is used, whose sleeve extends over the entire length of the inner race of the bearing or only a part of this length. In the latter case, the hollow shaft comprises a flange at one of its ends.
    [0016] According to yet another variant of the invention, the hollow shaft may extend axially beyond a lateral edge of the rest of the device 2, in particular beyond a lateral edge of the pulley 30, so that this hollow shaft constitutes, by itself, a positioning spacer with respect to a support such as the engine block 4. This is particularly advantageous when this engine block is not equipped with a boss such as the boss 6 shown in FIG. FIG. 4. According to a manufacturing variant of a half-shaft 40A or 40B, the bushing 42 and the flange 46 are made apart from one another, in particular made of plastic material, and then fixed on the washer 44 by a adapted process, in particular by vulcanization or by gluing. The invention is described above in the case of its implementation for an idler pulley. It is also applicable to a tensioner roller, to a reel and, more generally to any type of pulley device. The embodiments and alternatives contemplated above may be combined with one another to generate new embodiments of the invention.
    权利要求:
    Claims (11)
    [0001]
    CLAIMS1.- Pulley device (2) for belt (100) or chain comprising a bearing (20) provided with an outer ring (22), an inner ring (24) and at least one row of elements wheel (26) mounted in a rolling chamber (28) defined between the outer and inner rings, a pulley (30) rotatably connected to the outer ring and provided with a radial outer surface (32) for engagement with a belt or a chain and at least one hollow shaft (40A, 40B) adapted to receive a screw (8) for mounting the pulley device on a support (4), characterized in that the hollow shaft (40A, 40B) forms a unitary structure comprising a sleeve (42) and a flange (48) integral with the sleeve and extending radially therefrom outwardly with respect to a central axis (X40) of the hollow shaft up to the level of the rolling chamber (28).
    [0002]
    2.- Device according to claim 1, characterized in that an outer radial edge (182) of the flange forms a seal (J) which cooperates with the outer ring (22) and / or the pulley (30) to isolate the rolling chamber (28) from outside the device (2).
    [0003]
    3.- Device according to one of the preceding claims, characterized in that the flange (48) is formed of a washer (44) and a flange (46) and in that the washer is located radially between the sleeve (42) and the flange.
    [0004]
    4.- Device according to claim 3, characterized in that the washer (44) is made of a material more rigid than the material of the flange (46) and arranged to receive axially (E1,) the head of a screw (8) mounting the device (2) on a support (4) and / or a relief (6) of the support.
    [0005]
    5.- Device according to claim 4, characterized in that the washer (44) is metallic and the flange (46) is made of synthetic material, in particular polyamide
    [0006]
    6-6 and / or material comprising reinforcing fibers. 6.- Device according to one of claims 3 to 5, characterized in that the washer (44) is provided with reliefs (442, 446) cooperating with additional reliefs (422, 466) of the sleeve (42) and / or flange (46) and participating in a relative immobilization of these parts.
    [0007]
    7.- Device according to one of claims 3 to 6, characterized in that the axial thickness (e44) of the washer (44) is less than its radial width ((44) relative to a central axis (X40) of the hollow shaft.
    [0008]
    8.- Device according to one of the preceding claims, characterized in that it comprises two identical hollow shafts (40A, 40B) each forming a unitary structure comprising a sleeve (42) and a flange (48), in that the bushes are aligned along a central axis (X2) of the bearing and in that the flanges are each disposed on one side of the rolling chamber (28), along the central axis (X2) of the bearing (20).
    [0009]
    9. A method of manufacturing a hollow shaft of a pulley device (2) according to one of claims 3 to 7, characterized in that it comprises at least one overmolding step of the sleeve (42) and / or the flange (46) on the washer (44).
    [0010]
    10. A method for assembling a pulley device (2) for a belt (100) or a chain, this device comprising: a bearing (20) provided with an external ring (22), an inner ring ( 24) and at least one row of rolling elements (26) mounted in a rolling chamber (28) defined between the inner and outer rings, - a pulley (30) integral in rotation with the outer ring and provided with an outer radial surface (32) engaging with a belt or chain and - at least one hollow shaft (40A, 40B) adapted to receive a screw (8) for mounting the pulley device on a support (4), this method comprising prior steps of mounting the bearing (20) and the pulley (30) and being characterized in that it comprises a step subsequent to the prior steps and of engaging (F1) inside (V24) of the internal ring (24) of the bearing (20) a sleeve (42) belonging to a unitary structure (40A, 40B) forming a hollow shaft, bringing opposite the rolling chamber (28), in an axial direction (328), a flange (48) integral with the sleeve and belonging to the unitary structure.
    [0011]
    11. A method for assembling a pulley device (2) for a belt (100) or a chain, this device comprising: a bearing (20) provided with an external ring (22), an inner ring ( 24) and at least one row of rolling elements (26) mounted in a rolling chamber (28) defined between the inner and outer rings, - a pulley (30) integral in rotation with the outer ring and provided with an outer radial surface (32) engaging with a belt or chain and - at least one hollow shaft (40A, 40B) adapted to receive a screw (8) for mounting the pulley device on a support (4), this characterized in that it comprises a step of overmolding inside (V24) of the inner ring (24) of the bearing (20) a sleeve (42) belonging to a unitary structure (40A, 40B) forming a hollow tree.
    类似技术:
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    同族专利:
    公开号 | 公开日
    CN104976321A|2015-10-14|
    GB201505390D0|2015-05-13|
    FR3019866B1|2016-12-23|
    BR102015007622A2|2016-03-29|
    GB2527180A|2015-12-16|
    CA2887798A1|2015-10-11|
    DE102015105313A1|2015-10-29|
    JP2015203499A|2015-11-16|
    US20150292603A1|2015-10-15|
    CN104976321B|2019-09-10|
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    FR2913081B1|2007-02-27|2009-05-15|Skf Ab|DEBRAYABLE PULLEY DEVICE|
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    US8905879B2|2009-08-11|2014-12-09|Dayco Ip Holdings, Llc|Deflected bearing shield as a bearing seal for a pulley assembly and method of assembly|
    CN203463600U|2013-09-12|2014-03-05|盖茨优霓塔传动系统（上海）有限公司|Belt wheel assembly|FR3013093B1|2013-11-14|2015-12-11|Skf Ab|PULLEY DEVICE FOR CHAIN OR BELT AND MOTOR VEHICLE EQUIPPED WITH SUCH A DEVICE|
    FR3035928B1|2015-05-04|2017-12-01|Skf Ab|PULLEY DEVICE FOR TILT ROLLER OR ROLLER|
    FR3078758B1|2018-03-06|2020-04-03|Aktiebolaget Skf|PULLEY DEVICE FOR TENSIONER OR ROLLER|
    FR3082908B1|2018-06-26|2020-06-19|Aktiebolaget Skf|PULLEY DEVICE FOR TENSIONER OR ROLLER|
    FR3090060A1|2018-12-18|2020-06-19|Skf|Pulley device|
    法律状态:
    2016-04-27| PLFP| Fee payment|Year of fee payment: 3 |
    2017-04-28| PLFP| Fee payment|Year of fee payment: 4 |
    2018-05-02| PLFP| Fee payment|Year of fee payment: 5 |
    2019-04-29| PLFP| Fee payment|Year of fee payment: 6 |
    2020-04-29| PLFP| Fee payment|Year of fee payment: 7 |
    2021-04-27| PLFP| Fee payment|Year of fee payment: 8 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1453281A|FR3019866B1|2014-04-11|2014-04-11|PULLEY DEVICE FOR BELT OR CHAIN, METHOD FOR MANUFACTURING HOLLOW SHAFT FOR SUCH DEVICE AND METHOD FOR ASSEMBLING SUCH DEVICE|FR1453281A| FR3019866B1|2014-04-11|2014-04-11|PULLEY DEVICE FOR BELT OR CHAIN, METHOD FOR MANUFACTURING HOLLOW SHAFT FOR SUCH DEVICE AND METHOD FOR ASSEMBLING SUCH DEVICE|
    GB1505390.3A| GB2527180A|2014-04-11|2015-03-30|A pulley device for a belt or chain, method for manufacturing a hollow shaft for such a device and method for assembling such a device|
    BR102015007622A| BR102015007622A2|2014-04-11|2015-04-06|pulley device for a belt or chain, method for fabricating a hollow shaft for such device and method for mounting such device|
    DE102015105313.6A| DE102015105313A1|2014-04-11|2015-04-08|Disc device for belt or chain, manufacturing method of a hollow shaft for such a device and method of assembling such a device|
    CA2887798A| CA2887798A1|2014-04-11|2015-04-08|Pulley device for belt or chain, manufacturing process for a hollow shaft for such a device and assembly method for a device|
    US14/681,180| US20150292603A1|2014-04-11|2015-04-08|Pulley device for belt or chain, manufacturing process of an hollow shaft for such a device and assembly process of such a device|
    CN201510169367.0A| CN104976321B|2014-04-11|2015-04-10|The method of the hollow shaft of pulley arrangement and its assembly method and the manufacture device|
    JP2015080812A| JP2015203499A|2014-04-11|2015-04-10|Pulley device for belt or chain, process of manufacture of hollow shaft for pulley device and method for assembling pulley device|
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