• 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:
    The invention relates to a pulley device (1) comprising a pulley (2) and a bearing (3). The pulley (2) comprises at least one C-shaped pulley piece (17, 18) having an inner portion (19) mounted on the bearing (3), an outer portion (16) having an outer cylindrical surface ( 17) dedicated to the interaction with a belt or chain, and an intermediate portion (22) extending substantially radially between the axial ends of the inner and outer portions (16, 19) on an axial side of the device (1) of pulley. The outer cylindrical surface (16) of the outer ring (5) is provided with at least one recess (35) having in cross section a concave internal profile. The pulley piece (17, 18) is provided with at least one protruding portion (37, 38) which extends inwardly beyond the inner cylindrical surface (23, 31) of the inner portion (22). , 30), said projecting portion (37, 38) being received in a corresponding recess (35) of the outer ring (5) so as to lock the pulley piece (17, 18) with respect to the outer ring (5) in both axial directions.
    公开号:FR3075302A1
    申请号:FR1860366
    申请日:2018-11-09
    公开日:2019-06-21
    发明作者:Benoit Arnault；Nicolas Tronquoy；Philippe Walter
    申请人:SKF AB；
    IPC主号:
    专利说明:

    PULLEY DEVICE, PARTICULARLY FOR A TENSIONER OR
    GUIDE WHEEL
    TECHNICAL FIELD OF THE INVENTION
    The present invention relates to the field of pulley devices for idlers or guide wheels designed to interact with a chain or a belt, for example a timing belt of an internal combustion engine of a vehicle.
    BACKGROUND OF THE INVENTION
    Such rollers are generally used to maintain constant tension on the belt or chain within a determined range or to locally modify the path followed by the chain or belt. These are called tension rollers or guide wheels respectively. In the guide wheels, the pulley is mounted so as to rotate on a screw or spindle by means of a rolling bearing, the roller being then fixed directly or indirectly to the engine block or to an element of a tensioner roller, for example an articulated arm or an eccentric.
    Document GB 190509598 describes a pulley comprising overlapping male and female parts which are in a nesting relationship and form a cylindrical outer part intended to be in contact with a belt.
    A major disadvantage of this pulley is that an annular recess is formed on the external part intended to support the belt when the male and female parts are fixed together. There is therefore a risk of premature wear of the belt.
    Document GB 141 829 also discloses a pulley comprising a peripheral part intended to be in contact with a belt, an internal part and an intermediate part between the internal and external parts. The pulley is tightened on the outer bearing ring, but said pulley may move slightly axially during the use in service of the pulley device. In addition, with a pulley as described, the outer part could be deformed radially inward by bending under the action of the belt.
    It has been proposed in document DE 202005011230 U1 to house a damping ring inside a C-shaped pulley, said damping element being dedicated to damping vibrations from the belt and suitable for limit the radial deformation towards the inside of the external part of said pulley. However, the pulley can still be deformed under heavy loads.
    SUMMARY OF THE INVENTION
    The object of the invention is to overcome these drawbacks by proposing a pulley which is easy to install on a bearing, of good rigidity, provided to avoid early wear of the belt, and allowing effective support of said belt.
    To this end, the invention relates to a pulley device suitable for a tensioner roller or a belt or chain guide wheel, comprising a bearing and a pulley. The bearing comprises a rotating outer ring and a fixed inner ring, said rings being coaxial. The pulley comprises at least one pulley part having in cross section the overall shape of a C, and comprising an internal cylindrical part provided with an internal cylindrical surface mounted on an external cylindrical surface of the external ring of the bearing, a cylindrical part outer with an outer cylindrical surface intended to be in contact with the belt or chain, and a radial intermediate part extending substantially radially between axial ends of the inner and outer cylindrical parts on an axial side of the pulley device, the pulley part being formed in one piece and defining an open end on an axial side.
    According to the invention, the outer cylindrical surface of the outer ring of the bearing is provided with at least one recess having, in cross section, a concave internal profile. In addition, the pulley part is provided with at least one protruding part which extends inwards beyond the inner cylindrical surface of the inner part, said protruding part being housed in a corresponding recess in the outer ring. so as to block the pulley part with respect to the outer ring in both axial directions.
    According to other aspects of the invention which are advantageous but not compulsory, such a pulley device could incorporate one or more of the following characteristics:
    The bearing is a rolling bearing, at least one row of rolling elements being interposed radially between the inner ring and the outer ring.
    The rolling elements are balls.
    The rolling elements are spaced circumferentially equally and held by an annular cage.
    - The pulley is made of a single piece of pulley.
    - The axial length of the inner part of the pulley part is at least equal to 90% of the axial length of the outer cylindrical surface of the outer ring of the bearing.
    - The pulley device comprises a pulley comprising two C-shaped pulley parts mounted on the outer cylindrical surface of the outer ring of the bearing, the open ends of said pulley parts facing each other axially, each of said pulley parts being provided with 'a spacer.
    - The two pulley parts are symmetrical about a transverse radial plane passing through the center of the bearing.
    - The total length of the inner parts of the two C-shaped pulleys mounted on the outer ring is at least equal to 90% of the axial length of the outer cylindrical surface of said outer ring.
    - The external part of the pulley part is of an axial length greater than that of the internal part, said external part extending axially on at least one axial side of the internal part.
    - The pulley part is made of a pressed metal sheet or blank.
    The recess made on the outer cylindrical surface of the outer ring of the bearing is an annular groove.
    - The recess is centered on a transverse radial plane passing through the center of the bearing.
    - The recess is located on an outer cylindrical surface of the outer ring, in the immediate vicinity of a radial lateral surface of said outer ring.
    The projecting part is annular, and the recess is an annular groove.
    - The pulley part comprises a plurality of projecting parts spaced circumferentially, each being received by a corresponding recess in the outer ring.
    - The projecting part made on the pulley part consists of a bent edge of a free end of the inner cylindrical part of the pulley part, said bent edge being received by the recess of the outer ring.
    - The pulley part comprises a plurality of bent lugs, each being received by a corresponding recess in the outer ring.
    - The bent tabs extend radially inward from the inner part of the pulley part.
    - The bent lugs extend radially inwards from the outer part of the pulley part, said bent lugs passing through the open end of the pulley part, said bent lugs extending radially along the edge from the inner part and up to the corresponding recess in the outer ring.
    - The pulley part comprises a plurality of deformations of projecting material formed by folding the inner part of the pulley part, each of said deformations of projecting material being received in a corresponding recess in the outer ring.
    The pulley part comprises a plurality of bent lugs extending radially outward from the inner annular part, the free end of said lugs coming into contact with an inner surface or a bore in the outer annular part, said lugs being provided with a cut-out inner part forming a lug in the same radial direction and extending radially inwards in a corresponding recess in the outer ring of the bearing.
    SHORT DESCRIPTION OF THE DRAWINGS
    The invention will now be explained in correspondence with the attached figures, by way of illustrative examples, without limiting the subject of the invention. In the attached figures:
    - Figure 1 is an axial section of a pulley device according to a first embodiment of the invention;
    - Figure 2 is a perspective view of the pulley device of Figure 1;
    - Figure 3 is a detailed view of the pulley device of Figure 1;
    - Figure 4 is an axial section of a pulley device according to a second embodiment of the invention;
    - Figure 5 is a detailed view of the pulley device of Figure 4;
    - Figure 6 is an axial section of a pulley device according to a third embodiment of the invention;
    - Figure 7 is a detailed view of the pulley device of Figure 6;
    - Figure 8 is an axial section of a pulley device according to a fourth embodiment of the invention;
    - Figure 9 is a perspective view of the pulley device of Figure 8;
    - Figure 10 is a detailed view of the pulley device of Figure 8;
    - Figure 11 is an axial section of a pulley device according to a fifth embodiment of the invention;
    - Figure 12 is a detailed view of the pulley device of Figure 11;
    - Figure 13 is a perspective view of the pulley installed on the pulley device of Figure 11; and
    - Figure 14 is a bottom view of the pulley of Figure 13.
    DETAILED DESCRIPTION OF CERTAIN EMBODIMENTS
    The pulley device 1 as illustrated in FIGS. 1 to 3 is suitable for a tensioner roller or a belt or chain guide wheel, and comprises a pulley 2 intended to interact with a belt or chain (not shown) and a rolling bearing 3 with a geometric axis XI.
    The rolling bearing has a fixed inner ring 4 and a rotating outer ring 5 between which are housed two rows of rolling elements 6 and 7, which in the present case are balls, two annular cages 8, 9 holding respectively the circumferential spacing of said rolling elements 6, 7, and two annular seals 10, 11.
    The inner ring 4 and the outer ring 5 are concentric and symmetrical with respect to a transverse radial plane Y3 passing through the center of the rolling bearing 3. The rings 4, 5 are advantageously of the solid type. By solid type is meant a ring obtained by machining with removal of material, by machining, grinding, from a crude metal tube, a crude bar, blanks forged and / or laminated blanks.
    The inner ring 4 has a bore 12 for receiving a fixing screw 13 (in dotted lines) for fixing the device 1 on an external support. The inner ring further comprises an outer cylindrical surface 14 on which are formed toroidal circular raceways, said raceways having in cross section a concave internal profile adapted to the rolling elements 6, 7.
    The outer ring 5 has a cylindrical bore 15 on which are formed toroidal circular raceways, said raceways having in cross section a concave internal profile provided for receiving the rolling elements 6, 7. The outer ring 5 also has an outer cylindrical surface 16.
    The pulley 2 comprises two parts 17, 18 of pulley, both having in cross section the overall shape of a C.
    The first pulley part 17 has an axial annular external part 19 constituting a cylindrical external surface 20 designed to interact with a portion of the belt or chain, and a cylindrical internal surface or bore 21.
    The first pulley part 17 also includes an axial annular inner part 22 constituting a cylindrical inner surface or bore 23 in which the outer cylindrical surface 16 of the outer ring 5 of the bearing 3 is mounted, and a cylindrical outer surface 24.
    The external part 19 is of a diameter greater than that of the internal part 22, said external part 19 radially surrounding the internal part 22. Advantageously, the external part 19 is of an axial length greater than that of the internal part 22, said external part 19 protruding axially on at least one axial side of the internal part 22.
    The first pulley part 17 further comprises a radial annular intermediate part 25 extending substantially radially between the axial ends of the inner and outer cylindrical parts 22, 19 on a first axial side of the pulley device 1.
    The first pulley part 17 then has in cross section the overall shape of a C, defining an open end 26 on an axial side of the pulley device 1. The first piece of pulley 17 is formed in one piece.
    The second pulley part 18 comprises an axial annular external part 27 constituting a cylindrical external surface 28 designed to interact with a portion of the belt or chain, and a cylindrical internal surface or bore 29.
    The second pulley part 18 also has an axial annular inner part 30 constituting a cylindrical inner surface or bore 31 in which the outer cylindrical surface 16 of the outer ring 5 of the bearing 3 is mounted, and a cylindrical outer surface 32.
    The external part 27 has a diameter greater than that of the internal part 30, said external part 27 radially surrounding the internal part 30. Advantageously, the external part 27 is of an axial length greater than that of the internal part 30, said outer part 27 protruding axially on at least one axial side of the inner part 30.
    The second pulley piece 18 further comprises a radial annular intermediate portion 33 extending substantially radially between the axial ends of the inner and outer cylindrical portions 30, 27 on a second axial side of the pulley device 1, said second axial side being axially opposite the first axial side.
    The second pulley part 18 then has in cross section the overall shape of a C, defining an open end 34 on an axial side of the pulley device 1. The second piece 18 of pulley is formed in one piece.
    Advantageously, the parts 17, 18 of the pulley are both produced in a thin metal sheet or blank by bending, cutting and stamping.
    Advantageously, the two parts 17, 18 of C-shaped pulley are symmetrical with respect to the radial plane Y3. The free ends of the external parts 19, 27 of the first and second parts 17, 18 of the pulley respectively come into contact in an axial direction, the open ends 26, 34 being respectively open axially towards one another. The two outer cylindrical surfaces 20, 28 form a surface intended to interact with the belt or the chain. The pulley 2 formed by the two parts 17, 18 of pulley disposed in axial contact therebetween is suitable for guiding, supporting the belt or the chain efficiently.
    According to the invention, the outer cylindrical surface 20 of the outer ring 5 of the bearing 3 is provided with an annular groove 35. The groove 35 is centered on the transverse radial plane Y3 passing through the center of the bearing
    3.
    Each of the pulley parts 17, 18 of the pulley 2 further comprises a projection 37, 38, respectively. More precisely :
    The inner annular part 22 of the first pulley piece 17 has a free edge 37 which is bent radially inwards in the direction of the outer ring 5 of the bearing 3. Said bent edge 37 is received by the annular groove 35 of said ring exterior 5.
    Similarly and symmetrically, the inner annular part 30 of the second pulley part 18 has a free edge 38 which is bent radially inwards in the direction of the outer ring 5 of the bearing 3. Said bent edge 38 is also received by the annular groove 35 of said outer ring 5.
    The two bent edges 37, 38 face each other axially with respect to the central radial plane Y3, and are both received in the same groove 35 of the outer ring 5.
    The two parts 17, 18 of the pulley 2 are then locked axially in both axial directions relative to the outer ring 5 of the bearing 3. Even in the event of strong vibrations or shocks, the pulley 2 is prevented from having a movement axial and is able to effectively support the belt or chain for an increased and efficient service life.
    In a second embodiment of the invention shown in Figures 4 and 5, the pulley device 201 with a geometric axis X201 comprises a pulley 202 comprising two parts 217, 218 of C-shaped pulley mounted on a bearing 203 bearing having two annular grooves 235, 236 which interact with corresponding projecting parts 237, 238 of said first and second pulley parts 217, 218 respectively.
    The rolling bearing 203 is essentially of construction similar to that of the rolling bearing 3 of FIGS. 1 to 3. The rolling bearing 203 comprises a fixed inner ring 204 and an outer rotating ring 205 between which are housed two rows of elements of bearing 206 and 207, which in this case are balls, two annular cages 208, 209 maintaining respectively the circumferential spacing of said rolling elements 206, 207, and two annular seals 210, 211. The inner ring 204 and the outer ring 205 are concentric and symmetrical with respect to a transverse radial plane Y203 passing through the center of the rolling bearing 203.
    The inner ring 204 has a bore 212 intended to receive a fixing screw 213 (in dotted lines) for fixing the device 201 on an external support. The inner ring further comprises an outer cylindrical surface 214 on which are formed toroidal circular raceways, said raceways having in cross section a concave internal profile adapted to the rolling elements 206, 207.
    The outer ring 205 has a cylindrical bore 215 on which are formed toroidal circular raceways, said raceways having in cross section a concave internal profile provided for receiving the rolling elements 206, 207. The outer ring 205 also has an outer cylindrical surface 216.
    The pulley 202 comprises two parts 217, 218 of pulley, both having in cross section the overall shape of a C. The pulley 202 provided with parts 217, 218 of pulley is of construction essentially similar to that of pulley 2 provided with parts 17, 18 of pulley, respectively, of Figures 1 to 3.
    The first pulley part 217 has an axial annular external part 219 constituting a cylindrical external surface 220 designed to interact with a portion of the belt or chain, and a cylindrical internal surface or bore 221.
    The first pulley piece 217 also includes an axial annular inner portion 222 constituting a cylindrical or bore inner surface
    223 in which the outer cylindrical surface 216 of the outer ring 205 of the bearing 203 is mounted, and a cylindrical outer surface 224.
    The outer part 219 has a diameter greater than that of the inner part 222, said outer part 219 radially surrounding the inner part 222. Advantageously, the outer part 219 is of an axial length greater than that of the inner part 222, said outer part 219 protruding axially on at least one axial side of the inner part 222.
    The first pulley piece 217 further comprises a radial annular intermediate portion 225 extending substantially radially between the axial ends of the inner and outer cylindrical portions 222, 219 on a first axial side of the pulley device 201.
    The first pulley part 217 then has in cross section the overall shape of a C, defining an open end 226 on an axial side of the pulley device 201. The first pulley piece 217 is formed in one piece.
    The second pulley part 218 has an axial annular external part 227 constituting a cylindrical external surface 228 designed to interact with a portion of the belt or chain, and a cylindrical internal surface or bore 229.
    The second pulley part 218 also has an axial annular inner part 230 constituting a cylindrical inner surface or bore 231 in which is mounted the outer cylindrical surface 216 of the outer ring 205 of the bearing 203, and a cylindrical outer surface 232.
    The outer part 227 has a diameter greater than that of the inner part 230, said outer part 227 radially surrounding the inner part 230. Advantageously, the outer part 227 is of an axial length greater than that of the inner part 230, said outer part 227 protruding axially on at least one axial side of the inner part 230.
    The second pulley piece 218 further comprises a radial annular intermediate portion 233 extending substantially radially between the axial ends of the inner and outer cylindrical portions 230, 227 on a second axial side of the pulley device 201, said second axial side being axially opposite the first axial side.
    The second pulley part 218 then has in cross section the overall shape of a C, defining an open end 234 on an axial side of the pulley device 201. The second pulley piece 218 is formed in one piece.
    Advantageously, the two parts 217, 218 of a C-shaped pulley are symmetrical with respect to the radial plane Y203.
    According to this second embodiment of the invention, the outer cylindrical surface 216 of the outer ring 205 of the bearing 203 comprises two annular grooves 235, 236. The grooves 235, 236 are located in the immediate vicinity of opposite radial lateral surfaces of said ring outer 205. The annular grooves 235, 236 are symmetrical with respect to the central radial plane Y203. The annular groove 235 is placed above the inner annular part 222 of the first pulley part 217, said annular groove 235 being located in the immediate vicinity of a first lateral surface of the outer ring 5 on a first axial side. The annular groove 236 is placed above the inner annular part 230 of the second pulley part 218, said annular groove 36 being located in the immediate vicinity of a second lateral surface of the outer ring 205 on a second axial side which is axially opposite said first axial side.
    Each of the pulley parts 217, 218 of the pulley 202 further includes a projection 237, 238, respectively. More precisely :
    The inner annular part 222 of the first pulley part 217 comprises a plurality of deformations 237 of material which project radially inwards in the direction of the outer ring 205 of the bearing 203. The protruding parts 237 are formed by axial folding of said inner part 222 towards the opposite axial side. The projecting parts 237 are located in the immediate vicinity of the radial intermediate part 225 of said first pulley part 217, on the first axial side of the device 201. The projecting parts 237 are circumferentially spaced around the internal part 222 of the first part 217 pulley. Each of the projecting parts 237 is received by the annular groove 235 of said outer ring 205.
    Similarly and symmetrically, the inner annular part 230 of the second pulley part 218 comprises a plurality of material deformations 238 which project radially inwards in the direction of the outer ring 205 of the bearing 203. The protruding parts 238 are formed by axial folding of said inner part 230 in the direction of the opposite axial part. The projecting parts 238 are located in the immediate vicinity of the radial intermediate part 233 of said second pulley part 218, on the first axial side of the device 201. The projecting parts 238 are circumferentially spaced around the internal part 230 of the second part 218 pulley. Each of the projecting parts 238 is received by the annular groove 235 of said outer ring 205.
    In the illustrated embodiments, the projections 237, 238 are formed on the same radial planes. Alternatively, the protrusions could be formed on different radial planes.
    In a third embodiment of the invention shown in Figures 6 and 7, the pulley device 301 with a geometric axis X301 comprises a pulley 302 comprising only one part mounted on a bearing 303 with rolling bearing comprising a groove annular 335 which interacts with a corresponding projecting part 337 of said pulley 302.
    The rolling bearing 303 is essentially of similar construction to that of the rolling bearings 3 and 303 of FIGS. 1 to 5. The rolling bearing 303 has a fixed inner ring 304 and an outer rotating ring 305 between which are housed two rows of rolling elements 306 and 307, which in this case are balls, two annular cages 308, 309 respectively maintaining the circumferential spacing of said rolling elements 306, 307, and two annular seals 310, 311. The inner ring 304 and the outer ring 305 are concentric and symmetrical with respect to a transverse radial plane Y303 passing through the center of the rolling bearing 303.
    The inner ring 304 has a bore 312 intended to receive a fixing screw 313 (in dotted lines) for fixing the device 301 on an external support. The inner ring also comprises an outer cylindrical surface 314 on which circular toroidal raceways are formed, said raceways having in cross section a concave internal profile adapted to the rolling elements 306, 307.
    The outer ring 305 has a cylindrical bore 315 on which are formed toroidal circular raceways, said raceways having in cross section a concave internal profile provided for receiving the rolling elements 306, 307. The outer ring 305 also has an outer cylindrical surface 316.
    The pulley 302 comprises only one part having in cross section the overall shape of a C. The pulley 302 comprises an axial annular external part 319 constituting a cylindrical external surface 320 designed to interact with a portion of the belt or of the chain , and a cylindrical inner surface or bore 321.
    The pulley 302 also comprises an axial annular inner part 322 constituting a cylindrical inner surface or bore 323 in which is mounted the outer cylindrical surface 316 of the outer ring 305 of the bearing 303, and a cylindrical outer surface 324.
    The outer part 319 is of a diameter greater than that of the inner part 322, said outer part 319 surrounding the inner part radially 322. Advantageously, the outer part 319 is of an axial length greater than that of the inner part 322, said outer part 319 protruding axially on at least one axial side of the inner part 322.
    Advantageously, the axial length of the inner part 322 of the pulley 302 is at least equal to 90% of the axial length of the outer cylindrical surface 316 of the outer ring 305 of the bearing 303.
    The pulley 302 further comprises a radial annular intermediate portion 325 extending substantially radially between the axial ends of the inner and outer cylindrical portions 322, 319 on a first axial side of the pulley device 301.
    The pulley 302 then has in cross section the overall shape of a C, defining an open end 326 on an axial side of the pulley device 301. The pulley 302 is formed in one piece.
    According to the invention, the outer cylindrical surface 316 of the outer ring 305 of the bearing 303 has a single annular groove 335. The groove 335 is located in the immediate vicinity of a radial lateral surface of said outer ring 305 which is axially opposite the radial intermediate part 325 of the pulley 302.
    The inner annular part 322 of the pulley 302 comprises a plurality of material deformations 337 which project radially inwards in the direction of the outer ring 305 of the bearing 303. The protruding parts 337 are formed by axial folding of said inner part 322 towards the opposite axial side. The projecting parts 337 are located on the opposite axial side of the radial intermediate part 325 of said first pulley part 317. The protrusions 337 are circumferentially spaced around the inner portion 322 of the first pulley piece 317. Each of the projecting parts 337 is received by the annular groove 335 of said outer ring 305.
    As a variant not shown, the groove on the outer ring could be placed on the axial side of the radial intermediate pulley part, the protuberances being placed on the inner surface of the interior part on this side, said protuberances being received in said groove.
    In a fourth embodiment of the invention shown in Figures 8 to 10, the pulley device 401 comprises a pulley 402 comprising two parts 417, 418 of a C-shaped pulley mounted on a bearing 403 provided with an annular groove central 435 which interact respectively with bent lugs 437, 438 corresponding, which extend radially inwards from external parts 419, 427 respectively, of said first and second parts 417, 418 of pulley.
    The rolling bearing 403 is essentially of similar construction to that of the rolling bearings 3, 203 and 303 of FIGS. 1 to 7. The rolling bearing 403 has a fixed inner ring 404 and an outer rotating ring 405 between which two rows are housed of rolling elements 406 and 407, which in this case are balls, two annular cages 408, 409 respectively maintaining the circumferential spacing of said rolling elements 406, 407, and two annular seals 410, 411. The inner ring 404 and the outer ring 405 are concentric and symmetrical with respect to a transverse radial plane Y403 passing through the center of the rolling bearing 403.
    The inner ring 404 has a bore 412 intended to receive a fixing screw 413 (in dotted lines) for fixing the device 401 on an external support. The inner ring further comprises an outer cylindrical surface 414 on which are formed toroidal circular raceways, said raceways having in cross section a concave internal profile adapted to the rolling elements 406, 407.
    The outer ring 405 has a cylindrical bore 415 on which are formed toroidal circular raceways, said raceways having in cross section a concave internal profile provided for receiving the rolling elements 406, 407. The outer ring 405 further comprises an outer cylindrical surface 416.
    The pulley 402 comprises two parts 417, 418 of pulley, both having in cross section the overall shape of a C. The pulley 402 provided with parts 417, 418 of pulley is of construction essentially similar to that of pulley 2 provided with parts 17, 18 of pulley, respectively, of Figures 1 to 3.
    The first pulley part 417 has an axial annular external part 419 constituting a cylindrical external surface 420 designed to interact with a portion of the belt or chain, and a cylindrical internal surface or bore 421.
    The first pulley part 417 also comprises an axial annular inner part 422 constituting a cylindrical inner surface or bore 423 in which is mounted the outer cylindrical surface 416 of the outer ring 405 of the bearing 403, and a cylindrical outer surface 424.
    The outer part 419 has a diameter greater than that of the inner part 422, said outer part 419 radially surrounding the inner part 422. The outer part 419 is of an axial length greater than that of the inner part 422, said part outer 419 protruding axially from the axial side of the radial plane Y403.
    The first pulley part 417 further comprises a radial annular intermediate part 425 extending substantially radially between the axial ends of the inner and outer cylindrical parts 422, 419 on a first axial side of the pulley device 401.
    The first pulley part 417 then has in cross section the overall shape of a C, defining an open end 426 on an axial side of the pulley device 401. The first pulley piece 417 is formed in one piece.
    The second pulley part 418 has an axial annular external part 427 constituting a cylindrical external surface 428 designed to interact with a portion of the belt or chain, and a cylindrical internal surface or bore 429.
    The second pulley part 418 also comprises an axial annular inner part 430 constituting a cylindrical inner surface or bore 431 in which is mounted the outer cylindrical surface 416 of the outer ring 405 of the bearing 403, and a cylindrical outer surface 432.
    The external part 427 has a diameter greater than that of the internal part 430, said external part 427 radially surrounding the internal part 430. Advantageously, the external part 427 is of an axial length greater than that of the internal part 430, said outer part 427 projecting axially from the axial side of the radial plane Y403.
    The second pulley piece 418 further comprises a radial annular intermediate portion 433 extending substantially radially between the axial ends of the inner and outer cylindrical portions 430, 427 on a second axial side of the pulley device 401, said second axial side being axially opposite the first axial side.
    The second pulley part 418 then has in cross section the overall shape of a C, defining an open end 434 on an axial side of the pulley device 401. The second piece 418 of pulley is formed in one piece.
    Advantageously, the two parts 417, 418 of a C-shaped pulley are symmetrical with respect to the radial plane Y403.
    According to this fourth embodiment of the invention, the outer cylindrical surface 416 of the outer ring 405 of the bearing 403 has a single annular groove 435. The groove 435 is centered on the transverse radial plane Y403 passing through the center of the bearing 403.
    The first piece 417 of pulley comprises a plurality of bent lugs 437 which extend radially inwards from the outer part 419 in the direction of the outer ring 405. Each of the lugs 437 forms a radial protruding part which extends through the open end 426 of said pulley piece, in the immediate vicinity of the central radial plane Y403. Each of the free ends of said lugs 437 is received inside the annular groove 435 of the outer ring 405.
    Similarly and symmetrically with respect to the central radial plane Y403, the second pulley part 418 has a plurality of bent lugs 438 which extend radially inwards from the external part 427 in the direction of the external ring 405 Each of the pins 438 forms a radial projecting part which extends through the open end 434 of said pulley piece, in the immediate vicinity of the central radial plane Y403. Each of the free ends of said lugs 438 is received inside the annular groove 435 of the outer ring 405.
    The pins 437, 438 are axially adjacent in pairs. Two lugs 437, 438 of a pair are locked axially between walls defined by the annular groove 435. The two parts 417, 418 of the pulley 402 are then locked axially in both axial directions relative to the outer ring 405 of the bearing 403. Even in the event of strong vibrations or shocks, the pulley 402 is prevented from having an axial movement and is capable of effectively supporting the belt or the chain for a longer and more efficient service life.
    Thanks to this embodiment of the invention, when the belt or the chain exerts a radial load towards the interior on the external parts 419, 427 of the pulley 402, the internal free edges of bent lugs 437, 438 are pressed in the radial direction against the bottom surface of the annular groove 435 produced on the outer ring 405 of the bearing 403. Said outer axial parts 419, 427 are stiffened by the radial bent pins 437, 438 respectively which are supported in the radial direction by the outer ring 405. The pins 437, 438 make it possible to maintain in operating mode the radial position of the chain or of the belt in contact with the outer surfaces 420, 428 of said outer parts 419, 427 respectively.
    Alternatively not shown, the pulley may comprise a single piece of pulley, and the outer cylindrical surface of the outer ring may have only an annular groove which receives a plurality of bent lugs extending from the part outside of said pulley. Advantageously, the annular groove and the bent lugs are located on the axial side of the open end of the C-shaped pulley.
    In a fifth embodiment of the invention shown in FIGS. 11 to 14, the pulley device 501 comprises a pulley 502 comprising two parts 517, 518 of a C-shaped pulley mounted on a bearing 503 provided with an annular groove central unit 535 which interact respectively with corresponding bent pins 537, 538, which extend radially inwards from internal parts 522, 530 respectively, of said first and second parts 517, 518 of pulley.
    The rolling bearing 503 is essentially of construction similar to that of the rolling bearings 3, 203, 303 and 403 of FIGS. 1 to 10. The rolling bearing 503 comprises a fixed inner ring 504 and a rotating outer ring 505 between which are housed two rows of rolling elements 506 and 507, which in this case are balls, two annular cages 508, 509 respectively maintaining the circumferential spacing of said rolling elements 506, 507, and two annular seals 510, 511. The ring inner 504 and outer ring 505 are concentric and symmetrical with respect to a transverse radial plane Y503 passing through the center of the rolling bearing 503.
    The inner ring 504 has a bore 512 intended to receive a fixing screw 513 (in dotted lines) for fixing the device 501 on an external support. The inner ring further comprises an outer cylindrical surface 514 on which are formed toroidal circular raceways, said raceways having in cross section a concave internal profile adapted to the rolling elements 506, 507.
    The outer ring 505 has a cylindrical bore 515 on which are formed toroidal circular raceways, said raceways having in cross section a concave internal profile provided for receiving the rolling elements 506, 507. The outer ring 405 further comprises an outer cylindrical surface 516.
    The pulley 502 comprises two parts 517, 518 of pulley, both having in cross section the overall shape of a C. The pulley 502 provided with parts 517, 518 of pulley is of essentially the same construction as that of pulley 2 provided with parts 17, 18 of pulley, respectively, of Figures 1 to 3.
    The first pulley part 517 has an axial annular external part 519 constituting a cylindrical external surface 520 designed to interact with a portion of the belt or chain, and a cylindrical internal surface or bore 521.
    The first pulley part 517 also comprises an axial annular inner part 522 constituting a cylindrical inner surface or bore 523 in which the outer cylindrical surface 516 of the outer ring 505 of the bearing 503 is mounted, and a cylindrical outer surface 524.
    The outer part 519 is of a diameter greater than that of the inner part 522, said outer part 519 radially surrounding the inner part 522. The outer part 519 is of an axial length greater than that of the inner part 522, said part outer 519 protruding axially from the axial side of the radial plane Y503.
    The first pulley part 517 further comprises a radial annular intermediate part 525 extending substantially radially between the axial ends of the inner and outer cylindrical parts 522, 519 on a first axial side of the pulley device 501.
    The first pulley part 517 then has in cross section the overall shape of a C, defining an open end 526 on an axial side of the pulley device 501. The first piece 517 of pulley is formed in one piece.
    The second pulley part 518 comprises an axial annular external part 527 constituting a cylindrical external surface 528 designed to interact with a portion of the belt or chain, and a cylindrical internal surface or bore 529.
    The second pulley part 518 also includes an axial annular inner part 530 constituting a cylindrical inner surface or bore 531 in which the outer cylindrical surface 516 of the outer ring 405 of the bearing 503 is mounted, and a cylindrical outer surface 532.
    The outer part 527 has a diameter greater than that of the inner part 530, said outer part 527 radially surrounding the inner part 530. Advantageously, the outer part 527 is of an axial length greater than that of the inner part 530, said outer part 527 protruding axially from the axial side of the radial plane Y503.
    The second pulley part 518 further comprises a radial annular intermediate part 533 extending substantially radially between the axial ends of the inner and outer cylindrical parts 530, 527 on a second axial side of the pulley device 501, said second axial side being axially opposite the first axial side.
    The second pulley part 518 then has in cross section the overall shape of a C, defining an open end 534 on an axial side of the pulley device 501. The second piece 518 of pulley is formed in one piece.
    Advantageously, the two parts 517, 518 of a C-shaped pulley are symmetrical with respect to the radial plane Y503.
    According to this fifth embodiment of the invention, the outer cylindrical surface 516 of the outer ring 505 of the bearing 503 has a single annular groove 535. The groove 535 is centered on the transverse radial plane Y503 passing through the center of the bearing 503.
    The first pulley part 517 comprises a plurality of bent lugs 537 which extend radially outward from the inner part 522 in the direction of the outer part 519. Each of the lugs 537 forms a radial protruding part which extends through the open end 526 of said pulley piece, in the immediate vicinity of the central radial plane Y503. Each of the pins 537 has an upper free end 543 which comes into contact in the radial direction with the inner surface or bore 521 of the outer part 519. In addition, a cutout 539 is produced on each of said pins so as to define a free end lower 541. The lower free ends 541 of the pins 537 come into contact in the radial direction with the bottom surface of the annular groove 535 of the outer ring 505. The pins 437 have the shape of a radial part and each extend between an upper end 543 and a lower end 541, said pins 537 being blocked radially between the outer part 519 of the first pulley part 517 and the groove 535 of the outer ring 505.
    Similarly and symmetrically, the second piece 518 of pulley comprises a plurality of bent lugs 538 which extend radially outward from the inner part 530 in the direction of the outer part 527. Each of the lugs 538 forms a radial projection which extends through the open end 534 of said pulley part, in the immediate vicinity of the central radial plane Y503. Each of the pins 538 has an upper free end 544 which comes into contact in the radial direction with the inner surface or bore 529 of the outer part 527. In addition, a cutout 540 is produced on each of said pins so as to define a free end lower 542. The lower free ends 542 of the pins 538 come into contact in the radial direction with the bottom surface of the annular groove 535 of the outer ring 505. The pins 438 have the shape of a radial part and each extend between an upper end 544 and a lower end 542, said pins 538 being locked radially between the outer part 527 of the second pulley part 518 and the groove 535 of the outer ring 505.
    The pins 537, 538 are axially adjacent in pairs. Lower free edges 541, 542 of the lugs 537, 538 of a pair are locked axially between walls defined by the annular groove 535. The two parts 517, 518 of the pulley 502 are then locked axially in both axial directions relative to to the outer ring 505 of the bearing 503. Even in the event of strong vibrations or shocks, the pulley 502 is prevented from having an axial movement and is capable of effectively supporting the belt or the chain for a longer service life and efficient.
    Thanks to this embodiment of the invention, when the belt or the chain exerts a radial load towards the inside on the external parts 519, 527 of the pulley 402, the internal cylindrical surfaces 521, 529 of said external parts 519, 5127 respectively, are pressed in the radial direction respectively against the upper free edges 543, 544 of the pins 537, 538. Loads are transmitted via the radial parts of the pins 537, 538 to the lower free edges 541, 542 of said pins. The lower free edges 541, 542 are then pressed in the radial direction against the bottom surface of the groove 535 of the outer ring 505. Said outer axial parts 519, 527 are stiffened respectively by the radial bent pins 537, 538 which are supported in the radial direction by the outer ring 505. The pins 537, 538 make it possible to maintain in operating mode the radial position of the chain or of the belt in contact respectively with the outer surfaces 520, 528 of said outer parts 519, 527.
    Alternatively not shown, the pulley may comprise a single piece of pulley, and the outer cylindrical surface of the outer ring may have only an annular groove which receives a plurality of bent lugs extending from the part lower of said pulley. Advantageously, the annular groove and the bent lugs are located on the axial side of the open end of the C-shaped pulley.
    Representative, nonlimiting examples of the present invention have been described above in detail with reference to the accompanying drawings. This detailed description is simply intended to teach a person skilled in the art additional details to practice preferred aspects of the present teachings and is not intended to limit the scope of the invention. Furthermore, each of the additional features and teachings described above could be used separately or in conjunction with other features and teachings to provide an improved pulley device.
    Furthermore, various features of the representative examples described above, as well as the various independent and dependent claims below, could be combined in ways that are not specifically and explicitly listed in order to provide useful additional embodiments of the present teachings.
    权利要求:
    Claims (10)
    [1" id="c-fr-0001]
    1. Pulley device (1, 201, 301, 401, 501) suitable for a tensioner roller or belt or chain guide wheel, comprising:
    - a bearing (3, 203, 303, 403, 503) comprising a rotating outer ring (5, 205, 305, 405, 505) and a fixed inner ring (4, 204, 304, 404, 504), said rings being coaxial, and
    - a pulley (2, 202, 302, 402, 502) comprising at least one part (17, 18; 217, 218; 302; 417, 418; 517, 518) of pulley having in cross section the overall shape of a C, and including an inner cylindrical portion (22, 30; 222, 230; 322; 422, 430; 522, 530) having an inner cylindrical surface (23, 31; 223, 231; 323; 423, 421; 523 ; 531) mounted on an outer cylindrical surface (16, 216, 316, 416, 516) of the outer ring (5, 205, 305, 405, 505) of the bearing (3, 203, 303, 403, 503), a external cylindrical part (19, 27; 219, 227; 319; 419, 427; 519, 527) provided with an external cylindrical surface (20, 28; 220, 228; 320; 420, 428; 520, 528) intended for be in contact with the belt or chain, and a radial intermediate part (25, 33; 225, 233; 325; 425, 433; 525, 533) extending substantially radially between the axial ends of the inner cylindrical part (22 , 30; 222, 230; 322; 422, 430; 522 , 530) and the outer cylindrical part (19, 27; 219, 227; 319; 419, 427; 519, 527) on an axial side of the pulley device (1, 201, 301, 401, 501), the part (17, 18; 217, 218; 302; 417, 418; 517, 518) of pulley being formed of '' in one piece and defining an open end (26, 34; 226, 234; 326; 426, 434; 526, 534) on an axial side, characterized in that:
    - the outer cylindrical surface (16, 216, 316, 416, 516) of the outer ring (5, 205, 305, 405, 505) is provided with at least one recess (35; 235, 236; 335; 435; 535) having, in cross section, a concave internal profile, and
    - the part (17, 18; 217, 218; 302; 417, 418; 517, 518) of pulley is provided with at least one projecting part (37, 38; 237, 238; 337; 437, 438; 537, 538) which extends inwards beyond the internal cylindrical surface (23, 31; 223, 231; 323; 423, 421; 523; 531) of the internal part (22, 30; 222, 230; 322; 422, 430; 522, 530), said projection (37, 38; 237, 238; 337; 437, 438; 537, 538) being received in a corresponding recess (35; 235, 236; 335;
    435; 535) of the outer ring (5, 205, 305, 405, 505) so as to block the part (17, 18; 217, 218; 302; 417, 418; 517, 518) of pulley relative to the outer ring (5, 205, 305, 405, 505) in both axial directions.
    [2" id="c-fr-0002]
    2. Pulley device according to claim 1, the recess (35, 335, 435, 535) being centered on a transverse radial plane (Y3, Y303, Y403, Y503) passing through the center of the bearing (3, 303, 403 , 503).
    [3" id="c-fr-0003]
    3. Pulley device according to claim 1, the recess (235, 236) being located on the outer cylindrical surface (216) of the outer ring (205), in the immediate vicinity of a radial lateral surface of said outer ring ( 205).
    [4" id="c-fr-0004]
    4. Pulley device according to any one of the preceding claims, the recess produced on the outer cylindrical surface (16, 216, 316, 416, 516) of the outer ring (5, 205, 305, 405, 505) being an annular groove (35; 235, 236; 335; 435; 535).
    [5" id="c-fr-0005]
    5. Pulley device according to claim 4, the projecting part (37, 38; 437, 438; 537, 538) being annular.
    [6" id="c-fr-0006]
    6. Pulley device according to any one of claims 1 to 4, the part (217, 218; 302) of pulley comprising a plurality of projecting parts (237, 238; 337) spaced circumferentially, each being received by a corresponding recess (235, 236; 335) of the outer ring (205; 305).
    [7" id="c-fr-0007]
    7. Pulley device according to any one of the preceding claims, the projecting part formed on the part (17, 18) of pulley consisting of a bent edge (37, 38) of a free end of the inner cylindrical part (22 , 30) of the part (17, 18) of pulley, said bent edge (37, 38) being received by the recess (35) of the outer ring (5).
    [8" id="c-fr-0008]
    8. Pulley device according to any one of the preceding claims, the part (417, 418; 517, 518) of pulley comprising a plurality of bent lugs (437, 438; 537, 538), each being received by a recess corresponding (435; 535) of the outer ring (405; 505).
    [9" id="c-fr-0009]
    9. Pulley device according to any one of the preceding claims, the part (217, 218; 317) of pulley comprising a plurality of deformations (237, 238; 337) of projecting material formed by folding of the inner part (222 , 230; 322) of the part (217, 218; 317) of pulley, each of said deformations (237, 238; 337) of projecting material being received in a corresponding recess (235, 236; 335) of the outer ring ( 205; 305).
    [10" id="c-fr-0010]
    10. Pulley device according to any one of the preceding claims, the part (17, 18; 217, 218; 302; 417, 418; 517, 518) of pulley consisting of a sheet or a stamped metal blank .
    类似技术:
    公开号 | 公开日 | 专利标题
    FR3075302A1|2019-06-21|PULLEY DEVICE, PARTICULARLY FOR TENDER ROLLER OR GUIDE WHEEL
    EP3158402B1|2018-08-22|Timepiece wheel
    FR3035928A1|2016-11-11|PULLEY DEVICE FOR TILT ROLLER OR ROLLER
    FR2971028A1|2012-08-03|BEARING BEARING FOR BELT DEVICE BELT TENSIONER
    FR3018887A1|2015-09-25|ROLLER OR ROLLER DEVICE
    FR3037115A1|2016-12-09|PULLEY DEVICE FOR TILT ROLLER OR ROLLER
    US20200256447A1|2020-08-13|Pulley device, in particular for tensioning idler or runner roller
    EP2488768B1|2016-12-07|Ball bearing and corresponding bump stop
    FR3080421A1|2019-10-25|PULLEY DEVICE FOR TILT ROLLER OR ROLLER
    CN111577867A|2020-08-25|Pulley device, in particular for tensioning an idler or moving roller
    FR3082908A1|2019-12-27|PULLEY DEVICE FOR TENSIONER OR ROLLER
    FR2970755A1|2012-07-27|BELT TENSION ROLLER DEVICE AND ASSOCIATED ASSEMBLY METHOD
    FR3064326A1|2018-09-28|ROLLER GEAR ELEMENT
    FR3032501A1|2016-08-12|MONOBLOC CAGE FOR CYLINDRICAL ROLLER BEARING
    CN111577847A|2020-08-25|Pulley device, in particular for tensioning an idler or moving roller
    FR3040199A1|2017-02-24|BEARING BEARING INCLUDING OBLIQUE CONTACT ROLLS
    FR3090060A1|2020-06-19|Pulley device
    FR3078131A1|2019-08-23|PULLEY DEVICE FOR TILT ROLLER OR ROLLER
    EP0518763A1|1992-12-16|Cross-roller bearing allowing important misalignment
    FR3068095B1|2019-11-01|ROTATING ROLLING BEARING
    EP2963307B1|2017-05-10|Cage for retaining rolling bodies in a roller bearing
    EP2878841B1|2017-11-22|Cage for retaining rolling bodies in a roller bearing
    FR3099219A1|2021-01-29|Pulley device
    FR3038020A1|2016-12-30|PULLEY DEVICE FOR TILT ROLLER OR ROLLER
    EP3244080B1|2018-12-19|Method for assembling a roller bearing
    同族专利:
    公开号 | 公开日
    US20210207699A1|2021-07-08|
    US20190186612A1|2019-06-20|
    US11060598B2|2021-07-13|
    DE102017223317A1|2019-06-27|
    US20210207700A1|2021-07-08|
    FR3075302B1|2020-11-20|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    GB190509598A|1905-05-06|1906-05-05|Lawrence Zamboni|Improvements in Pulleys.|
    GB141829A|1919-02-05|1920-04-29|Lancashire Dynamo And Motor Co|Improvements in belt pulleys|
    DE102005003844A1|2005-01-27|2006-08-03|Schaeffler Kg|Secured fixing screw mechanism e.g. for securing building components of traction device drive, secures screw of tension roller during transport or to prevent it from coming loose|
    DE202005011230U1|2005-07-16|2005-09-22|Ina-Schaeffler Kg|Belt pulley especially for IC engine has a pressed steel construction with a damping element between the inside of the outer rim and the hub profile|
    DE102006002966A1|2006-01-21|2007-07-26|Schaeffler Kg|Running disk with integrated rolling element raceway|
    EP1967766A2|2007-03-07|2008-09-10|JTEKT Corporation|Component comprising a ring-shaped metal member and a ring-shaped resin portion and manufacturing method thereof|
    DE202007010473U1|2007-07-27|2007-09-27|Schaeffler Kg|Fixing screw for a deflection roller, which radially covers at least the front side of an inner ring of the rolling bearing|
    WO2010006857A1|2008-06-23|2010-01-21|Aktiebolaget Skf|Pulley device for tensioning idler or runner roller.|
    US1482579A|1923-01-05|1924-02-05|Budd G Nice|Ball-bearing wheel|
    US1627558A|1924-03-27|1927-05-10|Prec Metal Workers|Sheave|
    US1848144A|1928-07-05|1932-03-08|Alexis R Pribil|Pressed steel ball bearing wheel|
    US1845631A|1929-06-03|1932-02-16|Grand Rapids Hardware Co|Sash pulley|
    US1903776A|1931-02-09|1933-04-18|Formica Insulation Company|Method of securing a bearing within a pulley|
    US2137987A|1936-02-11|1938-11-22|Fafnir Bearing Co|Pulley|
    US2198831A|1937-08-26|1940-04-30|Westinghouse Electric & Mfg Co|Composite pulley|
    US2315357A|1940-01-31|1943-03-30|Midland Steel Prod Co|Ball-bearing annulus and method of making it|
    US2349281A|1942-02-07|1944-05-23|George H Kendall|Pulley bearing|
    US2530665A|1943-07-21|1950-11-21|Fafnir Bearing Co|Bearing|
    US2655813A|1950-08-10|1953-10-20|Edward N Howell|Sheave|
    US2669878A|1950-10-10|1954-02-23|Nelson Thomas Edward|Pulley construction|
    US3367199A|1966-05-25|1968-02-06|Dankowski Gerhard|Pulley and bearing assembly|
    FR1576262A|1967-08-15|1969-07-25|
    US3789683A|1971-11-18|1974-02-05|Frost & Son C L|Rotatable member assembly and method for making same|
    SE361715B|1972-11-13|1973-11-12|Skf Ind Trading & Dev|
    US3871241A|1974-01-23|1975-03-18|Illinois Tool Works|Take-up pulley|
    JPS5427501B2|1975-01-17|1979-09-10|
    US4033196A|1975-11-26|1977-07-05|Toyota Jidosha Kogyo Kabushiki Kaisha|Timing belt tensioner|
    US4073551A|1976-07-08|1978-02-14|Freeway Corporation|Rolling type bearing and method for making same|
    US4402678A|1978-11-06|1983-09-06|Dyneer Corporation|Clutch housing and pulley assembly|
    JPS56124426A|1980-03-07|1981-09-30|Nissan Eng Kk|Wet type deodorizing method including regeneration process of oxidizing agent|
    IT1211041B|1980-05-16|1989-09-29|Skf Kugellagerfabriken Gmbh|BELT TENSIONER ROLLER FOR BELT DRIVE.|
    GB2076930B|1980-05-30|1983-12-07|Skf Kugellagerfabriken Gmbh|A combination of a cylinderical sleeve and an annular pulley body|
    IT8121810V0|1980-06-27|1981-05-19|Skf Kugellagerfabriken Gmbh|BELT TENSIONER ROLLER FOR BELT DRIVES.|
    DE8025902U1|1980-09-27|1981-01-15|Skf Kugellagerfabriken Gmbh, 8720 Schweinfurt|Role, in particular tensioning roller for belt drives or the like|
    US4474562A|1980-12-03|1984-10-02|Fag Kugelfischer Georg Schafer & Co.|Tensioner for motor-vehicle timing belt|
    DE8235715U1|1982-12-18|1983-03-24|Skf Kugellagerfabriken Gmbh, 8720 Schweinfurt|Tension pulley for drive belt|
    ES288100Y|1983-06-22|1986-06-16|Skf Kugellagerfabriken Gmbh|TENSIONING ROLLER|
    US4518372A|1983-10-24|1985-05-21|Dye Donald D|Idler pulley and method of mounting a precision bearing|
    IT8452936V0|1984-02-01|1984-02-01|Riv Officine Di Villar Perosa|TRANSMISSION UNIT SUITABLE FOR TRANSMITTING THE MOTORCYCLE BY A DRIVE BELT FROM THE CRANKSHAFT OF A COMBUSTION ENGINE INTERNAL TO THE ENGINE ACCESSORIES|
    IT8453082V0|1984-03-09|1984-03-09|Riv Officine Di Villar Perosa|BELT TENSIONER GROUP SUITABLE TO BE INSERTED IN A FLEXIBLE TRANSMISSION IN PARTICULAR FOR A VEHICLE|
    US4568316A|1984-04-26|1986-02-04|Fmc Corporation|Multiple sheave mechanism with overlapping fit|
    JPH0225962Y2|1984-11-12|1990-07-16|
    US4831705A|1987-06-17|1989-05-23|Kabushiki Kaisha Kanemitsu|Method of manufacturing a sheet metal poly-V pulley|
    US4917655A|1989-03-01|1990-04-17|Ina Bearing Co., Inc.|Self adjusting timing belt tensioner|
    DE9319394U1|1993-12-17|1994-02-10|Schaeffler Waelzlager Kg|Tensioner pulley for a belt drive|
    DE19581535T1|1994-12-28|1997-06-05|Ntn Toyo Bearing Co Ltd|Belt tensioner|
    US6010420A|1995-08-21|2000-01-04|Ntn Corporation|Pulley, ball bearing and fan for preventing the occurence of abnormal noise under cold ambient conditions|
    JPH0972403A|1995-09-06|1997-03-18|Ntn Corp|Pulley and ball bearing for pulley|
    JP3541106B2|1996-07-08|2004-07-07|光洋精工株式会社|Auto tensioner|
    IT239891Y1|1996-12-19|2001-03-13|Dayco Pti Spa|BELT TENSIONER DEVICE, IN PARTICULAR TIMING BELTS|
    JP3733217B2|1997-09-30|2006-01-11|Ｎｔｎ株式会社|Pulley|
    JP3717645B2|1997-10-31|2005-11-16|Ｎｔｎ株式会社|Idler pulley|
    DE29720776U1|1997-11-22|1998-01-15|Skf Gmbh|Fastening device for belt rolls|
    JPH11270566A|1998-03-19|1999-10-05|Ntn Corp|Bearing for automobile pulley|
    FR2791289B1|1999-03-26|2001-05-04|Skf France|PROCESS FOR MANUFACTURING A ROLLER ROLLER|
    US6450689B1|1999-12-08|2002-09-17|Tokyo Sunworker Co., Ltd.|Roller and method of producing the same|
    US6293885B1|2000-03-14|2001-09-25|The Gates Corporation|Idler pulley|
    JP2002039334A|2000-07-21|2002-02-06|Nsk Ltd|Rolling bearing unit|
    JP4015360B2|2000-12-21|2007-11-28|Ｎｔｎ株式会社|Pulley ball bearing and pulley|
    JP4427195B2|2001-01-26|2010-03-03|Ｎｔｎ株式会社|Grease filled bearings for automobiles|
    JP4834921B2|2001-01-30|2011-12-14|日本精工株式会社|Rotation support device for pulley for compressor|
    WO2003004907A1|2001-07-06|2003-01-16|The Gates Corporation|Fan idler pulley|
    US7325974B2|2001-09-18|2008-02-05|Nsk Ltd.|Pulley rotation support apparatus|
    JP2003207032A|2002-01-15|2003-07-25|Denso Corp|Rotor|
    EP1489317A1|2002-02-20|2004-12-22|Nsk Ltd.,|Rotation support device for compressor pulley|
    DE10209673A1|2002-03-05|2003-09-18|Ina Schaeffler Kg|Roll for a belt drive|
    JP2003269329A|2002-03-15|2003-09-25|Sanden Corp|Compressor for vehicle|
    US20040178398A1|2003-03-13|2004-09-16|Miller Bradley D.|Spun-formed rotatable object with bearing and method of manufacture|
    JP4299603B2|2003-07-10|2009-07-22|バンドー化学株式会社|Idler device for transmission flat belt|
    DE102005049832B4|2004-10-19|2018-10-18|Denso Corporation|Power transmission device|
    FR2889278B1|2005-07-27|2008-09-12|Skf Ab|ROLLER DEVICE FOR BELT|
    US8012053B2|2005-09-29|2011-09-06|Dayco Products, Llc|Combination dust cover and bearing retention member|
    DE102005057297A1|2005-12-01|2007-06-21|Schaeffler Kg|Deflection pulley for a traction device|
    DE102006022766A1|2006-05-16|2007-11-22|Schaeffler Kg|Clamping or deflection roller, in particular for the traction mechanism drive of an internal combustion engine|
    CA2653860A1|2006-06-01|2007-12-06|Litens Automotive Partnership|Dust shield for a pulley bearing and a pulley with a dust shield|
    FR2913081B1|2007-02-27|2009-05-15|Skf Ab|DEBRAYABLE PULLEY DEVICE|
    JP2008249080A|2007-03-30|2008-10-16|Denso Corp|Power transmission device|
    JP2009174638A|2008-01-24|2009-08-06|Jtekt Corp|Resin pulley|
    DE102009056368A1|2008-12-12|2010-08-26|Schaeffler Technologies Gmbh & Co. Kg|Switchable drive pulley with an electrically operated, a friction disc having torque transmitting device|
    EP2414689B1|2009-04-03|2018-09-19|Aktiebolaget SKF|An idler and bearing assembly and a method of manufacturing same|
    DE102009022250B4|2009-05-20|2013-06-27|Interroll Holding Ag|Drum motor with inner and outer cover|
    US8617016B2|2010-06-02|2013-12-31|Dayco Ip Holdings, Llc|Low noise pulley|
    US8506434B2|2011-01-24|2013-08-13|The Gates Corporation|Isolating decoupler|
    US9453571B2|2012-12-24|2016-09-27|Borgwarner Inc.|Metal pulley with non-magnetically susceptible insert|
    WO2013002284A1|2011-06-30|2013-01-03|日本精工株式会社|Pulley device|
    US10274013B2|2011-11-16|2019-04-30|Roller Bearing Company Of America, Inc.|Cam follower with tire having axial movement compensating features|
    EP2951455B1|2013-01-31|2019-10-23|Litens Automotive Partnership|Decoupler|
    JP6238535B2|2013-03-14|2017-11-29|Ntn株式会社|Press pulley|
    DE102013004874A1|2013-03-21|2014-09-25|Getrag Getriebe- Und Zahnradfabrik Hermann Hagenmeyer Gmbh & Cie Kg|Automotive powertrain|
    DE102013005373B4|2013-03-28|2016-07-07|Schaeffler Technologies AG & Co. KG|Belt pulley and method of making the same|
    US9416863B2|2013-05-29|2016-08-16|Schaeffler Technologies AG & Co. KG|Pulley ring|
    FR3023892B1|2014-07-17|2017-12-01|Skf Ab|PULLEY DEVICE FOR CHAIN OR BELT|
    US9927017B2|2015-04-17|2018-03-27|Aktiebolaget Skf|Sheave for guiding rope in an industrial machine|
    FR3035928B1|2015-05-04|2017-12-01|Skf Ab|PULLEY DEVICE FOR TILT ROLLER OR ROLLER|
    FR3037115B1|2015-06-02|2018-11-23|Aktiebolaget Skf|PULLEY DEVICE FOR TILT ROLLER OR ROLLER|
    FR3039863B1|2015-08-06|2018-03-02|Skf Ab|PULLEY DEVICE FOR TILT ROLLER OR ROLLER|
    US10030758B2|2016-04-12|2018-07-24|Ford Global Technologies, Llc|Two-piece zero distortion pulley assembly having outer bearing raceway|
    US10228051B2|2016-07-22|2019-03-12|Ford Global Technologies, Llc|Two-piece molded pulley having radial bearing distortion-reducing characteristics|
    CN106425343B|2016-11-23|2018-08-21|浙江东星汽车部件有限公司|A kind of welded type expansion tightening wheel processing method|
    US10520029B2|2017-04-19|2019-12-31|Seiko Instruments Inc.|Structure with thermoplastic elastomer enveloping layer, bearing, and drive module|
    JP2019027496A|2017-07-28|2019-02-21|株式会社ジェイテクト|Rolling bearing for slide door|
    JP2019027493A|2017-07-28|2019-02-21|株式会社ジェイテクト|Rolling bearing for slide door|
    KR102011739B1|2017-08-14|2019-08-19|청호시스템|roller assembly|DE102019201754A1|2019-02-11|2020-08-13|Aktiebolaget Skf|Pulley device especially for a tension pulley or a pulley|
    DE102019201752A1|2019-02-11|2020-08-13|Aktiebolaget Skf|Pulley device especially for a tension pulley or a pulley|
    法律状态:
    2019-11-01| PLSC| Publication of the preliminary search report|Effective date: 20191101 |
    2019-11-27| PLFP| Fee payment|Year of fee payment: 2 |
    2020-11-26| PLFP| Fee payment|Year of fee payment: 3 |
    2021-11-26| PLFP| Fee payment|Year of fee payment: 4 |
    优先权:
    申请号 | 申请日 | 专利标题
    DE102017223317.6|2017-12-20|
    DE102017223317.6A|DE102017223317A1|2017-12-20|2017-12-20|Pulley device, in particular for a tensioning roller or roller|
    [返回顶部]