• 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 ball bearing cage (30) is provided with a wire comprising a first group of heels (40) circumferentially spaced apart from one another and forming a first discontinuous ring (35), a second group of heels (48) spaced apart from each other in the circumferential direction and forming a second discontinuous ring (36), and a plurality of connecting portions (38) each extending between one of the first group of beads (40) and one of the heels (48) of the second group. The connecting portions (38) and the heels (40) of the first group and / or the second group delimit a plurality of spaces (50) for each receiving a ball (7) of the bearing (2). The cage (30) further comprises at least one spacer (34) disposed within each space (50) and provided with a body (52) for housing a ball (7) and means for hooking (58, 60, 68) for fixing said body (52) on at least one of the connecting portions (38) of the wire defining said space (50). Each of the bodies (52) of the spacers (34) is entirely located in the circumferential direction between the connecting portions (38) of the wire delimiting said space (50).
    公开号:FR3041722A1
    申请号:FR1559253
    申请日:2015-09-30
    公开日:2017-03-31
    发明作者:Bruno Constant；Laurent Varnoux；Olivier Verbe
    申请人:SKF AB；
    IPC主号:
    专利说明:

    The invention relates to the field of rotary bearings of the ball bearing type and more particularly that of the cages equipping such ball bearings.
    Ball bearings can be used in a wide variety of applications to provide a mechanical connection of the "ball" or "pivot" type between two parts. Such ball bearings generally consist of an inner ring, intended to be secured to a first piece, an outer ring, intended to be secured to a second piece, and a plurality of balls. each extending in a space provided between the inner ring and the outer ring. The balls are generally kept spaced circumferentially by a cage.
    Conventionally, a cage can be made by molding a synthetic material and comprises a plurality of cells each forming a space for one of the balls.
    A disadvantage generally encountered when producing a cage by molding is the frequent appearance of manufacturing defects, and in particular surface defects, in particular on the surfaces intended to come into contact with the rings or on the surfaces intended to come into contact with the balls. These manufacturing defects are all the more common as the cage is massive, relatively to the volume left free between the two rings of the bearing.
    To overcome this drawback, a particular tool is generally used to manufacture the ball bearing cages which is specific to each design of the cages. Such a solution is however not fully satisfactory because it generates additional manufacturing cost for each ball bearing, all the more important that the manufacturing volume is low. The invention aims to remedy these drawbacks.
    More particularly, the invention aims to provide a ball bearing cage that can be manufactured economically and ensuring the bearing ball bearing function with improved efficiency. For this purpose, there is provided a ball bearing cage, provided with a wire comprising a first group of beads spaced relative to each other in the circumferential direction and forming a first discontinuous ring, a second group of beads spaced apart from each other. relative to each other in the circumferential direction and forming a second discontinuous ring, and a plurality of connecting portions each extending between one of the heels of the first group and one of the heels of the second group. The connecting portions and the heels of the first group and / or the second group delimit a plurality of spaces each for receiving a rolling ball. The cage further comprises at least one spacer disposed inside each space and provided with a body for housing a ball and fastening means for fixing said body on at least one of the connecting portions of the housing. wire delimiting said space. Each of the bodies of the spacers is entirely located in the circumferential direction between the connecting portions of the wire delimiting said space.
    Such a cage provided in particular with a yarn and a plurality of inserts on the yarn can be made from a plurality of materials having a smaller volume than cages known from the state of the art. This results in greater ease of production of the parts of such a cage and a lower frequency of the appearance of manufacturing defects.
    Advantageously, each space is delimited exclusively by a heel and / or at least a connecting portion extending from said heel.
    According to one embodiment, each space is delimited by a heel and by two successive connection portions extending from said heel.
    Advantageously, the attachment means of each spacer comprise at least one rib extending from an outer surface of the body of said insert and provided with a groove shaped for the passage and the retention of the wire.
    Preferably, the groove is shaped for the passage and the retention of the associated connecting portion of the wire.
    In one embodiment, the cage comprises, for each space, exactly two spacers.
    In such an embodiment, it may further be provided that the attachment means of each spacer comprise at least one first, second and third ribs each extending from an outer surface of the body of said insert, each first and second ribs being provided with a groove for passage and retention of the associated connecting portion of the wire, the third rib having a front surface in contact with the associated bead of the wire. Advantageously, said front surface is flat.
    Still in this embodiment, it can also be provided that the attachment means of each spacer comprise at least a first and a second ribs each extending from an outer surface of the body of said spacer, the first rib comprising a groove for passage and retention of the associated connecting portion of the wire, the second rib including a groove for the passage and the retention of the associated bead of the wire.
    In another embodiment, the cage comprises, for each space, a single spacer, the attachment means of each spacer comprising at least two ribs extending from an outer surface of the body of said spacer and being respectively provided two grooves for the passage and retention of two separate connecting portions of the wire.
    Preferably, the outer surface is in point contact with a bead of the wire.
    According to an advantageous embodiment, the spacers are identical.
    According to another aspect, it is proposed a ball bearing comprising an inner ring, an outer ring, at least one row of balls and at least one cage as defined above. Other objects, features and advantages of the invention will become apparent on reading the following description, given solely by way of nonlimiting example, and with reference to the appended drawings, in which: FIG. 1 illustrates a perspective view of a ball bearing with a cage according to a first embodiment of the invention, - Figure 2 illustrates another perspective view of the roll cage of Figure 1 equipped with a plurality of balls, - FIG. 3 illustrates a perspective view of the wire of the cage of FIG. 2; FIG. 4 is a partial top view of the cage of FIG. 2; FIG. 5 illustrates a perspective view of a cage according to FIG. a second embodiment of the invention as well as a plurality of balls incorporated in the cage, - Figure 6 is a partial top view of the cage of Figure 5, - Figure 7 illustrates a perspective view of 'a cage according to a third second embodiment of the invention and a plurality of balls incorporated in the cage, and - Figure 8 is a partial top view of the cage of Figure 7.
    Referring to Figure 1, the ball bearing 2 comprises an outer ring 4 (partially illustrated), an inner ring 6 and a row of balls 7 interposed between said rings 4 and 6. The outer ring 4 and the inner ring 6 are both of cylindrical form and arranged coaxially with respect to each other. For the present description, unless otherwise stated, an axial direction and a radial direction relative to the axis of the ball bearing 2 are defined.
    The outer ring 4 comprises an outer cylindrical surface 8, a cylindrical bore 10 located radially opposite the outer surface 8, and two opposite radial end surfaces 12 and 14, axially defining the outer surface 8 and the bore 10. in the same way, the inner ring 6 comprises a cylindrical bore 16, an outer cylindrical surface 18 located radially opposite the bore 16, and two opposite radial front surfaces 20 and 22 which axially delimit the bore 16 and the surface 18. Runways 24, 26 are respectively formed on the rings 4 and 6 to form raceways for the balls 7.
    The bearing 2 further comprises a cage 30 for maintaining the circumferential spacing of the balls 7. The cage 30 is disposed radially between the outer ring 4 and the inner ring 6. The cage 30 serves to define a housing for each of the 7 bearing ball 2 and maintain said balls 7 inside their respective housings. To do this, the cage 30 comprises in particular a wire 32 and a plurality of spacers 34.
    Referring now to Figure 3, the wire 32 is closed. The wire 32 forms a first discontinuous ring 35, a second discontinuous ring 36 and a plurality of connecting portions 38 extending between the discontinuous rings 35 and 36. The discontinuous rings 35 and 36 are parallel to one another. other, while the connecting portions 38 extend substantially perpendicularly to the plane of the rings 35 and 36. Due to the sinuous shape of the wire 32, a plurality of spaces 50 are defined for accommodating the balls 7. As is 2, the balls 7 are kept spaced from each other by the spacers 34. More specifically, it should be noted that there is no contact between the wire 32 of the cage and the balls 7. By avoiding the contact between the wire 32 and the balls 7, the contact between the balls 7 and the cage 30 passes entirely through the spacers 34. This minimizes the friction due to the sliding of the balls against the cage, by a appropriate choice of material and the form of the spacers.
    If, in the illustrated embodiment, the wire 32 is made in one piece, it is possible, without departing from the scope of the invention, to consider a wire consisting of several parts assembled relative to each other.
    The spacers 34 are shaped to be made integral with the wire 32 by means of attachment means, as will be further explained later. These attachment means are designed to allow the spacers 34 to pivot around the connecting portions 38, which results in a greater flexibility of the cage 30 against the pressure exerted by the balls 7 and thus a further reduction of the friction . In addition, assembly and disassembly are made easier.
    As can be seen in FIG. 3, the first discontinuous ring 35 has substantially the shape of a regular polygon, each of the sides constituting it being intended to be arranged opposite a ball 7 of the bearing. In the exemplary embodiment illustrated, the first discontinuous ring 35 has substantially the shape of a regular octagon, and is therefore adapted to be incorporated in a bearing comprising eight balls. The first discontinuous ring 35 consists of a first group of heels 40. In the embodiment shown, the first group of heels comprises eight heels 40. The heels 40 are spaced in the circumferential direction relative to each other. The heels 40 are constituted by portions of the wire 32 substantially straight, of substantially equal lengths and all extending substantially in the same plane. Each bead 40 has a first end 42 and a second end 44 distinct and opposite to the first end 42. The length of the bead 40 is greater than the diameter of a ball 7 intended to cooperate with the cage 30 and preferably less than this diameter multiplied by a factor of 1.5.
    The connecting portions 38 each extend from one end 42 or 44 of a bead 40. More particularly, for each bead 40, exactly two connecting portions 38 extend, one from the end 42 the other from the end 44. Thus, in the embodiment shown, the cage 30 has sixteen connecting portions 38. Each of the connecting portions 38 extends generally in a direction orthogonal to the plane defined by the heels 40. Moreover, the connecting portions 38 all extend, from the plane defined by the heels 40, in the same direction and are of substantially identical shape and size. Each connecting portion 38 comprises a rectilinear portion 45 directed substantially in the direction orthogonal to the plane defined by the heels 40. By corollary, the straight portion 45 of each connecting portion 38 is substantially perpendicular to the heel 40 adjacent to said connecting portion 38. The respective straight portions 45 of the connecting portions 38 have substantially the same length, between one half and three quarters of the diameter of a ball 7 intended to cooperate with the cage 30. Each connecting portion 38 also comprises a curved portion 46 respectively connecting the straight portion 45 of the connecting portion 38 to one of the ends 42 and 44.
    The second discontinuous ring 36 consists of a second group of heels 48 spaced apart from each other in the circumferential direction. In the exemplary embodiment illustrated, the second group of heels comprises eight heels 48 serving to connect in pairs the connecting portions 38. More particularly, each heel 48 connects, on the one hand, a connecting portion 38 extending from an end 42 of a first bead 40, and, secondly, a connecting portion 38 extending from one end 44 of a second bead 40, distinct from the first bead, the first and second heels 40 of the first group being two adjacent sides of the polygonal discontinuous ring 35.
    Each of the heels 40 of the first group defines, with the two connecting portions 38 which extend from its ends, a space 50 for receiving a ball 7. Thus, in the embodiment shown, each space 50 of the cage 30 is delimited respectively by a heel 40 and the two connecting portions 38 which are adjacent thereto. In the exemplary embodiment illustrated in FIG. 3, eight spaces 50 are each delimited by a heel 40 associated with said space 50 and by two connecting portions 38 associated with said space 50.
    Each of the heels 48 of the second group defines, with the two connecting positions 38 which extend from its ends, a space 51. The space 51 may for example be filled with grease to reduce friction, when the cage 30 is incorporated in a ball bearing, of said cage 30 against the rings of the ball bearing.
    Referring to Figure 2, the cage 30 comprises a plurality of pairs of spacers 34, each pair being respectively provided to cooperate respectively with one of the balls 7 to hold it in position. In the exemplary embodiment shown, eight pairs of spacers 34 are respectively fixed inside the eight spaces 50, each pair of spacers 34 being respectively related to one of the eight balls 7. The spacers 34 can be made in a polymeric material or a metallic material. The spacers 34 may be made by a three-dimensional molding, stamping or printing process.
    Referring now to Figure 4, a space 50 comprises two spacers 34 generally disposed within said space 50. It should be noted that the description of the two tabs 34 shown in Figure 4, which follows, is just as much for the other spacers of the cage 30. In the illustrated embodiment, the spacers 34 are identical to each other. Alternatively, it can be envisaged without departing from the invention that the spacers 34 of each pair mounted within the space 50 have a different design relative to each other.
    Each spacer 34 comprises a body 52 intended to accommodate and hold a ball 7. For this purpose, the body 52 comprises a concave inner surface 54 conforming to the spherical shape of the ball 7. At the opposite of the surface 54, the body 52 comprises a convex outer surface 56. The body 52 of the insert 34 is wholly within the space 50 shown. In other words, the body 52 is entirely located in the circumferential direction between the two connecting portions 38 delimiting said space 50. In addition, the body 52 is entirely located on one side of the heel 40 delimiting said space 50.
    The body 52 of each spacer 34 also comprises means for attaching said interlayer to the wire 32. For each spacer 34, the attachment means comprise a first rib 58 and a second rib 60. The ribs 58 and 60 extend all two from the outer surface 56 of the body 52. More particularly, each of the ribs 58 and 60 extends substantially in the plane perpendicular to the direction of the straight portion 45 of one of the connecting portions 38. The rib 58 comprises an end 62 opposite the outer surface 56 of the body 52. In the same way, the rib 60 comprises an end 64 opposite to the outer surface 56. The ribs 58 and 60 each comprise a groove 66 (Figure 2). Each groove 66 is formed on the respective end 62, 64 of the associated rib. The two grooves 66 of the respective ribs 58 and 60 of a spacer 34 are provided for the passage and for the retention of the same straight portion 45, belonging to that of the two connecting portions 38 which is closest to the insert 34.
    In addition, each spacer 34 comprises a third rib 68 extending from the outer surface 56. The third rib 68 extends substantially in the plane perpendicular to the direction of the heel 40. At its end opposite the surface 56 of the body 52, the third rib 68 comprises a flat surface intended to come into linear contact with the heel 40.
    Referring now to Figures 2 and 4, a ball 7 is in spherical contact with the inner surfaces 54 of two spacers 34 associated therewith, the inner surfaces 54 ensuring the retention of the ball 7. On the other side, the spacers 34 are both in surface contact via the grooves 66 with the straight portions 45 of the connecting portions 38 defining the space 50 associated with the ball 7. Finally, the flat end surface of the ribs 68 of each of the two spacers 34 is in linear contact with the heel 40 delimiting said space 50.
    Considering one of the two spacers 34, the combination of the spherical contacts, surface and linear allows the position of said interlayer relative to the wire 32, when a ball 7 is suitably incorporated. Conversely, the insert 34 can be easily moved relative to the wire 32 when the ball 7 is not incorporated.
    Consequently, an integral assembly consisting of a first spacer 34, the ball 7 and a second spacer 34 is secured to the wire 32 and held stationary inside the space 50. The maintenance of space circumferential between the balls 7 of the ball bearing 2 is then provided by the cage 30.
    A cage 70 according to a second exemplary embodiment of the invention is shown in FIGS. 5 and 6. To facilitate understanding of the invention, it should be noted that FIGS. 5 and 6 are for the second embodiment, respectively what are Figures 2 and 4 for the first embodiment. Furthermore, the elements of the cage 70 identical to those of the cage 30 have the same references. In particular, the cage 70 comprises a wire 32 having the same characteristics as that of the cage 30. Moreover, balls 7 have been incorporated in the cage 70. In this embodiment, each ball 7 is also held in position by two spacers 72 identical.
    As shown in FIG. 6, unlike the spacers 34 of the first embodiment, the attachment means of each spacer 72 do not include the rib 60. As can be seen in FIG. groove 76 located at its end opposite the outer surface 56. The groove 76 is provided for the passage and the retention of the heel 40. Thus, in this embodiment, the attachment means comprise the rib 62 and the rib 68.
    In this way, the ball 7 is always in contact with the inner surfaces 54 of the two spacers 72. Each of the spacers 72 is in contact with the straight portion 45 associated via the groove 66 and in contact with the heel 40 via the groove 72.
    In this way, each of the two spacers 72 is held in position relative to the wire 32 when a ball 7 is properly incorporated.
    A cage 80 according to a third exemplary embodiment of the invention is shown in FIGS. 7 and 8. Like FIGS. 5 and 6, FIGS. 7 and 8 are in the third embodiment what are respectively in the first embodiment the Figures 2 and 4. Moreover, the identical elements bear the same references and balls 7 are shown arranged in their respective housings. In this embodiment, each ball 7 is held in position by a single spacer 82 within the associated space 50.
    Referring to Figure 8, each spacer 82 comprises a body 84 integrally located within the space 50. The body 84 is delimited by a concave inner surface 86 and a convex outer surface 88. In addition, the inner surface 86 has a substantially spherical shape so as to be able to surround the outer surface of a ball 7. In this embodiment, the body 84 is preferably of at least sufficient length so that the inner surface 86 is in contact with two diametrically opposite points of the outer surface of the ball 7.
    In addition, there is provided a first rib 90 and a second rib 91, both extending from the outer surface 88. More particularly, the ribs 90 and 91 both extend in the same plane, in a opposite. In other words, the rib 90 extends from the body 84 to the connecting portion 38 closest to the end 42, the rib 91 extending from the body 84 to the connecting portion 38 closest end of the end 44. The plane in which the ribs 90 and 91 extend is a plane perpendicular to the direction of one of the straight portions 45 of the two connecting portions 38. At its end opposite the body 84, the rib 90 comprises a groove 92 provided for the passage and retention of the straight portion 45 of the connecting portion 38 closest to the end 42. The rib 91, meanwhile, comprises at its end opposite the body 84 a groove 93 substantially identical provided for the passage and the retention of the connecting portion 38 closest to the end 44. The outer surface 88 is substantially spherical, so as to come into contact point or linear against the heel 40.
    In this way, the spacer 82 is held in position by two surface contacts and a point or linear contact. Thus, when a ball 7 is correctly inserted in a spacer 82, said spacer 82 is held stationary relative to the wire 32 inside the space 50.
    It should be noted that, in this third embodiment, the body 84 of the insert 82 comprises a cavity delimited by the inner surface 86. As a result, a ball 7 must be passed in force to be introduced or extracted from this cavity. . This results in a better maintenance of the balls 7 relative to the cage 80, and therefore a greater resistance of the ball bearing in which is incorporated all the balls and the cage 80. Conversely, in the first two examples of embodiment, the housing is provided by a pair of tabs 34 or 72 which constitute two separate parts. These examples of embodiment are, in turn, advantageous in that they facilitate the introduction or extraction of a ball 7 of the housing formed by the spacers.
    In view of the three embodiments that have been exposed, the invention makes it possible to maintain the circumferential space between the balls 7, by means of a relatively small cage compared to traditional cages. The production is thus facilitated, as well as the assembly and disassembly of the cage within a ball bearing.
    In addition, such a cage comprising a wire and a plurality of spacers is more adaptable, having the particular advantage of being designed with respect to the diameter of the balls of a ball bearing and not with respect to the dimensions of the assembly. marbles. Such a cage can then be incorporated on different types of ball bearings, the only constraint being that the balls have the same diameter.
    A cage provided with a thread and a plurality of spacers is moreover advantageous in the event of a manufacturing defect on one of the inserts, since it is necessary to change only the interlayer which is the subject of the invention. the other tabs can be kept.
    Moreover, the limited space caused by this cage within a ball bearing allows better lubrication of the rolling elements and limits their friction with respect to the rings and the cage. The invention thus makes it possible to increase the service life and / or the operating limits of a ball bearing, such as, for example, the maximum operating speed.
    Furthermore, it should be noted that, in these three embodiments, each ball bearing is associated with at least one insert, i.e. a spacer, for forming a housing. In addition, for each of the balls, the insert (s) reported (s) associated with said ball serves to maintain this ball exclusively and therefore does not cooperate with the other balls. It then follows an improvement in the solidity of the bearing.
    In the exemplary embodiments illustrated, the wire 32 of the cage is shaped so that the spaces 50 are all closed at the first discontinuous ring 35 and open at the second discontinuous ring 36 by considering the axial direction.
    Alternatively, it would be possible to provide a cage in which the heels 48 of the second group have a larger circumferential dimension, for example substantially equal to that of the heels 40 of the first group. In this way, the spaces 51 are able to receive balls 7. The cage then comprises two groups of spaces intended to receive balls, the first group consisting of spaces 50 which are closed by a heel 40 at the level of the first ring 35 and open at the second ring 36, the second group consisting of spaces 51 which are closed by a heel 48 at the second ring 36 and open at the first ring 35. In such an alternative embodiment, is introduced therefore the balls 7 in the spaces 50 of the first group by the side of the second ring 36 and the balls 7 in the spaces 51 of the second group by the side of the first ring 35.
    权利要求:
    Claims (10)
    [1" id="c-fr-0001]
    Cage (30, 70, 80) for a ball bearing (2), provided with a wire (32) comprising a first group of beads (40) spaced from each other in the circumferential direction and forming a first discontinuous ring (35), a second group of heels (48) circumferentially spaced apart from one another and forming a second discontinuous ring (36), and a plurality of connecting portions (38) each extending between one of the heels (40) of the first group and one of the heels (48) of the second group, in which: the connecting portions (38) and the heels (40) of the first group and / or the heels (48) of the second group; group delimit a plurality of spaces (50) for each receiving a ball (7) of the bearing (2), - the cage (30, 70, 80) further comprises at least one spacer (34, 72, 82) disposed within each space (50) and provided with a body (52, 84) for housing a ball (7) and hooking means (58, 60, 68, 90, 91) for fixing said body on at least one of the connecting portions (38) of the wire defining said space (50), each of the bodies (52, 84) of the spacers (34, 72, 82) is entirely located in the direction circumferential between the connecting portions (38) of the wire defining said space (50).
    [2" id="c-fr-0002]
    2. Cage (30, 70, 80) according to claim 1, wherein each space (50) is delimited by one of the heels (40, 48) of the first and second groups and by two successive connecting portions (38) s' extending from said heel (40, 48).
    [3" id="c-fr-0003]
    3. Cage (30, 70, 80) according to claim 2, wherein each space (50) is delimited by one of the heels (40) of the first group.
    [4" id="c-fr-0004]
    4. Cage (30, 70, 80) according to any one of claims 1 to 3, wherein the attachment means of each spacer (34, 72, 82) comprise at least one rib (58, 60, 68, 90, 91) extending from an outer surface (56, 88) of the body of said insert and provided with a groove (66, 76, 92, 93) shaped for passage and retention of the wire (32) .
    [5" id="c-fr-0005]
    A cage (30, 70, 80) according to claim 4, wherein the groove (66, 92, 93) is shaped for passage and retention of the associated connecting portion (38) of the wire (32).
    [6" id="c-fr-0006]
    6. Cage (30, 70) according to any one of claims 1 to 5, comprising, for each space (50), exactly two spacers (34, 72).
    [7" id="c-fr-0007]
    7. Cage (30) according to claim 6, wherein the attachment means of each spacer (34) comprise at least a first and a second ribs (58, 60) each extending from an outer surface ( 56) of the body of said insert (34), each of the first and second ribs (58, 60) being provided with a groove (66) for passage and retention of the associated connecting portion (38) of the wire (32). the body of each spacer (34) comprising a third rib (68) extending from said outer surface (56) of the body of said spacer (34) and having a frontal surface in contact with the heel (40, 48) associated with the wire (32).
    [8" id="c-fr-0008]
    8. Cage (70) according to claim 6, wherein the attachment means of each spacer (72) comprise at least a first and a second ribs (58, 68) each extending from an outer surface ( 56) of the body (52) of said spacer (72), the first rib (58) including a groove (66) for the passage and retention of the associated connecting portion (38) of the wire (32), the second rib ( 68) including a groove (76) for passage and retention of the associated bead (40, 48) of the wire (32).
    [9" id="c-fr-0009]
    9. Cage (80) according to any one of claims 1 to 5, comprising, for each space (50), a single spacer (82), the attachment means of each spacer (82) comprising at least two ribs ( 90, 91) extending from an outer surface (88) of the body of said insert and being respectively provided with two grooves (92, 93) for the passage and retention of two separate connecting portions (38) of the thread (32).
    [10" id="c-fr-0010]
    Ball bearing (2) comprising an inner ring (6), an outer ring (4), at least one row of balls (7) and at least one cage (30, 70, 80) according to any one of Claims 1 to 9.
    类似技术:
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    同族专利:
    公开号 | 公开日
    CN106996421B|2020-02-21|
    US9964149B2|2018-05-08|
    CN106996421A|2017-08-01|
    FR3041722B1|2017-09-08|
    US20170089391A1|2017-03-30|
    DE102016218826A1|2017-03-30|
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    GB781153A|1954-12-28|1957-08-14|Georg Schaefer|Loop type ball bearing cage|
    FR1403706A|1964-05-06|1965-06-25|Bearing housing spacer|
    DE102008014552B4|2007-03-23|2011-02-03|Ab Skf|Wire cage for roller bearings|
    GB2533301A|2014-12-15|2016-06-22|Skf Ab|Roller bearing wire cage|
    DE102015200515A1|2015-01-15|2016-08-04|Schaeffler Technologies AG & Co. KG|Wire cage for a cylindrical roller bearing and manufacturing method therefor|USD846247S1|2017-05-08|2019-04-23|Nicholas Kirkwood Limited|Shoe sole|
    CN107989903A|2017-12-19|2018-05-04|慈兴集团有限公司|A kind of lightweight ball bearing nylon holding frame|
    法律状态:
    2016-09-28| PLFP| Fee payment|Year of fee payment: 2 |
    2017-03-31| PLSC| Publication of the preliminary search report|Effective date: 20170331 |
    2017-10-02| PLFP| Fee payment|Year of fee payment: 3 |
    2018-09-28| PLFP| Fee payment|Year of fee payment: 4 |
    2019-09-27| PLFP| Fee payment|Year of fee payment: 5 |
    2020-09-28| PLFP| Fee payment|Year of fee payment: 6 |
    2021-09-27| PLFP| Fee payment|Year of fee payment: 7 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1559253A|FR3041722B1|2015-09-30|2015-09-30|CAGE FOR BALL BEARING WITH WIRE AND INTERCONNECTS|FR1559253A| FR3041722B1|2015-09-30|2015-09-30|CAGE FOR BALL BEARING WITH WIRE AND INTERCONNECTS|
    US15/277,391| US9964149B2|2015-09-30|2016-09-27|Cage for a ball bearing provided with a wire and added interposed parts|
    DE102016218826.7A| DE102016218826A1|2015-09-30|2016-09-29|Cage for a ball bearing, which is provided with a wire and attached spacers|
    CN201610873790.3A| CN106996421B|2015-09-30|2016-09-30|Ball bearing cage provided with wires and added insert parts|
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