WO2017026353A1 - Butée à rouleaux - Google Patents

Butée à rouleaux Download PDF

Info

Publication number
WO2017026353A1
WO2017026353A1 PCT/JP2016/072831 JP2016072831W WO2017026353A1 WO 2017026353 A1 WO2017026353 A1 WO 2017026353A1 JP 2016072831 W JP2016072831 W JP 2016072831W WO 2017026353 A1 WO2017026353 A1 WO 2017026353A1
Authority
WO
WIPO (PCT)
Prior art keywords
roller
radial direction
pocket
rollers
cage
Prior art date
Application number
PCT/JP2016/072831
Other languages
English (en)
Japanese (ja)
Inventor
透一 野渡
Original Assignee
透一 野渡
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 透一 野渡 filed Critical 透一 野渡
Publication of WO2017026353A1 publication Critical patent/WO2017026353A1/fr

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
    • F16C19/30—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for axial load mainly
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/46—Cages for rollers or needles
    • F16C33/48—Cages for rollers or needles for multiple rows of rollers or needles

Definitions

  • the present invention relates to a thrust roller bearing configured by a plurality of rollers rolling on a raceway surface being held radially by a cage.
  • a thrust roller bearing that receives a thrust load includes a plurality of radially arranged rollers (rolling elements), and is inserted between a non-rotating member and a rotating member in, for example, a vehicle transmission or a windmill device, and has a rotational axis direction. Used for smooth rotation of the rotating member while receiving a thrust force.
  • the thrust roller bearing includes, for example, a plurality of rollers arranged radially on the raceway surface, and a cage having pockets for storing the rollers (see Patent Document 1).
  • An object of the present invention is to provide a thrust roller bearing capable of suppressing various problems caused by roller sliding.
  • the present invention is a thrust roller bearing that receives at least a thrust load, and is a group of rollers composed of a plurality of rollers arranged radially on a raceway surface, and a group of rollers arranged in a plurality of rows in the radial direction of the rollers. And a cage having a plurality of rows of pockets for storing the rollers constituting the roller group, and the number of the rollers constituting the roller group on the outer side in the radial direction is set on the inner side in the radial direction.
  • the present invention relates to a thrust roller bearing that is larger than the number of the rollers constituting the roller group.
  • the cage may be composed of a plurality of cage elements arranged in the radial direction, and the cage element may have one row of the pockets corresponding to one row of the roller group.
  • the plurality of cage elements may be freely connected or separated in the radial direction.
  • the plurality of cage elements may not be connected in the radial direction.
  • the pocket extends in the radial direction, opens to the outside in the radial direction and closes to the inside in the radial direction, and opens in the thickness direction of the cage,
  • the roller protrudes in the thickness direction of the retainer from the retainer through the opening in the thickness direction of the retainer in the pocket in the state of being accommodated in the pocket.
  • the roller may be prevented from coming off from the opening in the thickness direction of the cage in the pocket.
  • the radially outward open end of the pocket of the retainer element inside the radial direction is blocked by the retainer element outside the radial direction, and the inside of the radial direction
  • the rollers housed in the pockets of the cage element may be restricted from coming out outward in the radial direction.
  • the present invention is a thrust roller bearing that receives at least a thrust load, and has a roller group composed of a plurality of rollers arranged radially on a raceway surface and a pocket that accommodates the rollers constituting the roller group.
  • the pocket extends in the radial direction, opens to the outside in the radial direction and closes to the inside in the radial direction, and opens in the thickness direction of the cage.
  • the roller protrudes in the thickness direction of the cage from the cage through the opening in the thickness direction of the cage in the pocket in the state of being accommodated in the pocket,
  • the pocket relates to a thrust roller bearing that restricts the roller from slipping out of an opening in the thickness direction of the cage in the pocket.
  • the thrust roller bearing is a thrust roller bearing that receives a thrust load and a radial load
  • the raceway surface may be conical.
  • the roller may have a substantially conical shape constricted toward the inner side in the radial direction of the roller.
  • roller and / or the cage may be made of a fluororesin.
  • FIG. 1A It is a top view which shows the thrust roller bearing 1 of 1st Embodiment of this invention in the state which abbreviate
  • FIG. 1B is a cross-sectional view taken along the line ABC in FIG. 1A. It is a top view which shows the inner side retainer element 33A. It is a front view in FIG. 3A. It is the figure which changed the direction of FIG. 3B.
  • FIG. 3B is a view corresponding to FIG. 3A, showing a state in which the rollers 22A are virtually taken out of the pockets 32A.
  • FIG. 3C is a view corresponding to FIG.
  • FIG. 3C showing a state in which the rollers 22A are virtually taken out of the pockets 32A. It is a bottom view which shows the outer side retainer element 33B. It is a front view in FIG. 5A. It is the figure which changed direction of FIG. 5B.
  • FIG. 5B is a diagram corresponding to FIG.
  • FIG. 5C is a diagram corresponding to FIG. 2B is an exploded cross-sectional view of FIG. 2B showing the outer retainer element 33B.
  • FIG. FIG. 3B is an exploded cross-sectional view of FIG. 2B showing the inner retainer element 33A.
  • FIG. 2B is a view corresponding to FIG. 2A, showing the thrust roller bearing 1 of the first embodiment of the present invention in a state including the race rings 6 and 7.
  • FIG. 2B is a view corresponding to FIG. 2B, showing the thrust roller bearing 1 of the first embodiment of the present invention in a state including the race rings 6 and 7. It is a top view which shows the thrust roller bearing 1A of 2nd Embodiment of this invention in the state which abbreviate
  • FIG. 10B is a diagram corresponding to FIG. 10B, showing a state where the rollers 122 are virtually taken out of the pockets 132.
  • FIG. 14A It is a figure which shows the state which took out the roller 222B from the pocket 232B virtually, and is a top view which shows the outer side retainer element 233B.
  • FIG. 1A is a plan view showing the thrust roller bearing 1 according to the first embodiment of the present invention in a state in which a bearing ring is omitted.
  • FIG. 1B is a bottom view of FIG. 1A.
  • FIG. 2A is a front view of FIG. 1A.
  • 2B is a cross-sectional view taken along the line ABC in FIG. 1A.
  • FIG. 3A is a plan view showing the inner cage element 33A.
  • FIG. 3B is a front view of FIG. 3A.
  • FIG. 3C is a diagram in which the orientation of FIG. 3B is changed.
  • FIG. 4A is a diagram corresponding to FIG.
  • FIG. 3A showing a state in which the rollers 22 ⁇ / b> A are virtually taken out of the pockets 32 ⁇ / b> A.
  • FIG. 4B is a diagram corresponding to FIG. 3C, showing a state where the rollers 22 ⁇ / b> A are virtually taken out of the pockets 32 ⁇ / b> A.
  • FIG. 5A is a bottom view showing the outer retainer element 33B.
  • FIG. 5B is a front view of FIG. 5A.
  • FIG. 5C is a diagram in which the orientation of FIG. 5B is changed.
  • FIG. 6A is a diagram corresponding to FIG. 5A, showing a state in which the rollers 22 ⁇ / b> B are virtually taken out of the pockets 32 ⁇ / b> B.
  • FIG. 5A is a bottom view showing the outer retainer element 33B.
  • FIG. 5B is a front view of FIG. 5A.
  • FIG. 5C is a diagram in which the orientation of FIG. 5B is
  • FIG. 6B is a diagram corresponding to FIG.
  • FIG. 7A is an exploded cross-sectional view of FIG. 2B showing the outer retainer element 33B.
  • FIG. 7B is an exploded cross-sectional view of FIG. 2B showing the inner cage element 33A.
  • FIG. 8A is a view corresponding to FIG. 2A showing the thrust roller bearing 1 according to the first embodiment of the present invention in a state including the race rings 6 and 7.
  • FIG. 8B is a diagram corresponding to FIG. 2B, showing the thrust roller bearing 1 according to the first embodiment of the present invention in a state including the race rings 6 and 7.
  • the thrust roller bearing 1 of the first embodiment is a thrust roller bearing that substantially receives only a thrust load.
  • the thrust roller bearing 1 of the first embodiment includes a roller group 2, a retainer 3, and an outer race 6 as an outer race (outer ring) (see FIGS. 8A and 8B).
  • an inner race 7 see FIGS. 8A and 8B as an inner race (inner ring).
  • the cage 3 is disposed between the outer race 6 and the inner race 7. As shown in FIGS. 1A to 6B, a plurality of rollers 22 constituting the roller group 2 are held in a pocket 32 formed in the cage 3 so as to be able to roll.
  • the thrust roller bearing 1 is used, for example, in a vehicle transmission or a windmill device. As shown in FIGS. 8A and 8B, the thrust roller bearing 1 has a stepped shaft-like rotating member 75 inserted into the inner peripheral side of the inner race 7 and an outer race 6. It is inserted between the housing 65 facing. The thrust roller bearing 1 smoothly supports the rotation of the rotating member 75 while receiving the axial thrust force of the rotating member 75 by the rolling of the plurality of rollers 22 held by the cage 3.
  • the outer race 6 includes an annular raceway portion 61 on which a raceway surface 61a on which a plurality of rollers 22 roll, and a short cylindrical outer circumference wall that extends perpendicularly from the outer circumference end of the raceway portion 61 to the raceway surface 61a.
  • the unit 62 is integrally provided.
  • the raceway surface 61a is on a plane orthogonal to the rotation axis J1 and is disposed to face the raceway surface 71a of the inner race 7.
  • the inner race 7 has an annular track portion 71 formed with a track surface 71a on which a plurality of rollers 22 roll, and a short cylindrical shape extending from the inner peripheral end of the track portion 71 perpendicular to the track surface 71a. And an inner peripheral wall portion 72.
  • the raceway surface 71 a is disposed to face the raceway surface 61 a of the outer race 6 so as to be parallel to the raceway surface 61 a.
  • the stepped shaft-like rotating member 75 is pressed into the stepped portion so as to stride over the track portion 71 and the inner peripheral wall portion 72 of the inner race 7.
  • the roller group 2 includes a plurality of rollers 22 that extend radially on the raceway surfaces 61a and 71a and are arranged at intervals in the circumferential direction DR.
  • the roller group 2 (2A, 2B) is arranged in a plurality of rows (two rows in the present embodiment) in the radial direction DD of the rollers 22.
  • the roller 22 is a cylindrical roller having a cylindrical outer periphery.
  • the cage 3 has an annular plate shape in plan view.
  • the outer peripheral wall 62 of the outer race 6 is slightly larger than the outer periphery of the cage 3. Therefore, the cage 3 disposed on the track portion 61 of the outer race 6 can smoothly rotate inside the outer peripheral wall portion 62.
  • the cage 3 has a plurality of rows of pocket groups 31 for storing the rollers 22 constituting the roller group 2.
  • the pocket group 31 includes a plurality of pockets 32 arranged at intervals in the circumferential direction DR.
  • the pocket groups 31 (31A, 31B) are arranged in a plurality of rows (in this embodiment, two rows) in the radial direction DD of the rollers 22.
  • the pockets 32 are radially provided in the same number as the plurality of rollers 22 so as to hold the plurality of radially arranged rollers 22 in a rollable manner.
  • the cage 3 is composed of a plurality of cage elements 33 arranged in the radial direction DD.
  • the retainer 3 includes a (first) retainer element 33A (see FIGS. 3A and 4A) inside the radial direction DD and a (second) retainer element outside the radial direction DD. 33B (see FIGS. 5A and 6A).
  • Each cage element 33 (33A, 33B) has one row of pocket groups 31 (pockets 32) corresponding to one row of roller groups 2.
  • the inner first cage element 33A has an inner pocket group 31A (pocket 32A) corresponding to the inner first roller group 2A.
  • the outer second cage element 33B has an outer pocket group 31B (pocket 32B) corresponding to the outer second roller group 2B.
  • the pocket 32 has a cylindrical inner peripheral shape that can accommodate the roller 22 corresponding to the outer peripheral shape of the cylindrical roller 22.
  • the pocket 32 extends in the radial direction DD and is open at the outer open end 41 outside the radial direction DD.
  • the pocket 32 has a bottom 42 inside the radial direction DD and is closed.
  • the roller 22 does not protrude from the outer open end 41 of the pocket 32 to the outer side in the radial direction DD or is substantially flush with the cage 32 in the state of being accommodated in the pocket 32.
  • the pocket 32 is opened at the thickness direction opening portions 43 and 43 on both sides of the cage 3 in the thickness direction DT.
  • the roller 22 protrudes in the thickness direction of the cage 3 through the thickness direction opening portion 43 in the pocket 32.
  • the pocket 32 restricts the roller 22 from coming off from the opening portion 43 in the thickness direction in the pocket 32.
  • the thickness direction opening portion 43 has a width (diameter) of the cylindrical roller 22 when viewed in a direction (radial direction DD) extending the pocket 32 and the roller 22. ) Is narrower than. Therefore, the roller 22 does not come out of the thickness direction opening portion 43 in the pocket 32.
  • the pocket 32 is open at the outer open end 41 outside the radial direction DD, and has a bottom 42 inside the radial direction, Closed. Therefore, in each cage element 33, the roller 22 can be inserted into the pocket 32 via the outer open end 41 (only) inward in the radial direction DD, and inserted into the pocket 32. The rollers 22 can be extracted (only) toward the outside in the radial direction DD via the outer open end 41.
  • the plurality of retainer elements 33 adjacent in the radial direction DD can be connected or separated in the radial direction DD by the connection engaging portion 35.
  • the coupling engagement portion 35 includes a first engagement portion 35A and a second engagement portion 35B.
  • a plurality of first engaging portions 35A are provided on the outer peripheral portion of the inner (first) cage element 33A, spaced apart in the circumferential direction DR.
  • a plurality of second engaging portions 35B are provided in the inner peripheral portion of the (second) retainer element 33B outside the radial direction DD and spaced apart in the circumferential direction DR.
  • the first engagement portion 35A and the second engagement portion 35B are disposed at positions where they can engage with each other, and can be engaged with each other. In a state where the first engagement portion 35A and the second engagement portion 35B are engaged, the inner (first) retainer element 33A and the outer (second) retainer element 33B are connected.
  • the outer open end 41 in the radial direction DD in the pocket 32A of the cage element 33A inside the radial direction DD is the radial direction DD.
  • the outer retainer element 33B is closed by the inner periphery. This restricts the rollers 22 housed in the pockets 32A of the cage element 33A inside the radial direction DD from coming out of the radial direction DD.
  • the number of rollers 22B constituting the outer roller group 2B in the radial direction DD (12 in this embodiment) is the number of rollers 22A constituting the inner roller group 2A in the radial direction DD (8 in this embodiment). More).
  • the difference in the number of rollers 22 constituting the roller group 2 in the cage element 33 adjacent to the radial direction DD is, for example, 2 to 10, preferably 3 to 8.
  • the roller 22, the cage 3, the outer race 6 and the inner race 7 are made of a fluororesin.
  • the fluororesin include PTFE, PFA, and FEP.
  • Fluoropolymers have excellent properties such as chemical resistance, electrical insulation, heat resistance, low friction (self-lubricating), and machinability.
  • Suitable as a roller Suitable as a roller.
  • the resin forming the rollers may be a resin other than a fluororesin. Further, the rollers and the like may be made of metal.
  • the thrust roller bearing 1 of the first embodiment is a roller group 2 composed of a plurality of rollers 22 arranged radially on the raceway surfaces 61 a and 71 a, and is arranged in a plurality of rows in the radial direction DD of the rollers 22.
  • the group 2 and the cage 3 having a plurality of rows of pockets 32 for storing the rollers 22 constituting the roller group 2 are provided.
  • the number of rollers 22B constituting the outer roller group 2B in the radial direction DD is larger than the number of rollers 22A constituting the inner roller group 2A in the radial direction DD.
  • the length of the roller 22 can be shortened compared to the case where a long roller is used in one row of roller groups, and the circumferential speed difference of the roller 22 in the radial direction DD is reduced.
  • the slip of the roller 22 can be reduced.
  • various problems caused by sliding of the rollers 22 rotational resistance between the raceway surfaces 61a and 71a and 22 due to sliding friction increase, and wear of the rollers 22 and the raceway surfaces 61a and 71a increases on the outer peripheral side. Etc.) can be suppressed.
  • each roller group 2 the space
  • the cage 3 includes a plurality of cage elements 33 that can be connected or separated in the radial direction DD.
  • the cage element 33 has one row of pockets 32 corresponding to one row of roller groups 2. Therefore, according to 1st Embodiment, the multi-row pocket group which accommodates the multi-row roller group 2 is connected by connecting the retainer element 33 which has the single-row pocket 32 corresponding to the single-row roller group 2. 31 can be formed easily.
  • the pocket 32 extends in the radial direction DD, opens to the outside of the radial direction DD and is closed to the inside of the radial direction DD, and the cage 3 in the thickness direction DT.
  • the roller 22 protrudes in the thickness direction DT of the retainer 3 from the retainer 3 through the opening 43 in the thickness direction DT of the retainer 3 in the pocket 32 in the state of being accommodated in the pocket 32.
  • the pocket 32 restricts the roller 22 from coming out of the opening 32 in the thickness direction DT of the cage 3 in the pocket 32. Therefore, according to 1st Embodiment, the holder
  • the open end 41 outside the radial direction DD in the pocket 32 of the cage element 33 inside the radial direction DD is The rollers 22 are blocked by the cage element 33 outside the radial direction DD, and the rollers 22 housed in the pockets 32 of the cage element 33 inside the radial direction DD are restricted from coming out of the radial direction DD. Therefore, according to the first embodiment, there is no need to separately provide a configuration for closing the open end 41 in the pocket 32A of the retainer element 33A inside the radial direction DD, and the adjacent retainer elements 33A and 33B are provided. If connected, the open end 41 in the pocket 32 can be closed.
  • the roller 22 and the cage 3 are made of a fluororesin.
  • the roller 22, the cage 3, the outer race 6 and the inner race 7 are made of a fluororesin. Therefore, according to 1st Embodiment, rotation of the roller 22 with respect to the holder
  • FIG. 9 is a plan view showing the thrust roller bearing 1A according to the second embodiment of the present invention in a state in which the bearing ring is omitted.
  • the second embodiment will be described mainly focusing on differences from the first embodiment.
  • the description of the first embodiment is appropriately applied to points that are not particularly described. Also in the second embodiment, the same effects as in the first embodiment are achieved.
  • the thrust roller bearing 1A of the second embodiment includes a coupling engagement portion 35 that couples a plurality of cage elements 33 (33A, 33B) adjacent in the radial direction DD. I do not have. That is, the plurality of cage elements 33 (33A, 33B) are not connected. Therefore, the inner (first) cage element 33A in the radial direction DD and the outer (second) cage element 33B in the radial direction DD rotate independently at different rotational speeds (number of rotations). can do. Other configurations in the second embodiment are the same as those in the first embodiment. Therefore, according to the thrust roller bearing 1A of the second embodiment, the (second) cage element 33B outside the radial direction DD is faster than the (first) cage element 33A inside the radial direction DD. Can rotate at peripheral speed.
  • the outer open end 41 in the pocket 32A of the retainer element 33A on the inner side in the radial direction DD is: It is blocked by the retainer element 33B outside the radial direction DD, and the rollers 22A housed in the pockets 32A of the retainer element 33A inside the radial direction DD are prevented from coming out of the radial direction DD.
  • the same effects as the thrust roller bearing 1 of the first embodiment are exhibited. Further, since the circumferential speed of the (second) cage element 33B outside the radial direction DD is larger (faster) than the circumferential speed of the (first) cage element 33A inside the radial direction DD, the rotational motion The torque loss load at can be reduced.
  • FIG. 10A is a front view showing a thrust roller bearing 101 according to a third embodiment of the present invention in a state in which a bearing ring is omitted.
  • FIG. 10B is a plan view of FIG. 10A.
  • FIG. 11 is a diagram corresponding to FIG. 10B, showing a state in which the rollers 122 are virtually taken out of the pocket 132.
  • FIG. 12 is a sectional view showing the thrust roller bearing 101 according to the third embodiment of the present invention in a state including the race rings 106 and 107.
  • 13 is a cross-sectional view showing a state in which the race rings 106 and 107 and the rollers 122 are omitted from the state shown in FIG.
  • the third embodiment will be described mainly focusing on differences from the first embodiment, and components similar to those of the first embodiment are denoted by +100.
  • the description of the first embodiment is appropriately applied to points that are not particularly described. Also in the third embodiment, the same effects as in the first embodiment are achieved.
  • the thrust roller bearing 101 of the third embodiment is a thrust roller bearing that receives a thrust load and a radial load. As shown in FIGS. 10A to 13, the plurality of rollers 122 arranged radially on the raceway surfaces 161a and 171a.
  • the roller group 102 to be configured, the cage 103 having a pocket 132 for storing the roller 122 that configures the roller group 102, the outer raceway ring 106, and the inner raceway ring 107 are provided.
  • the roller 122 as a rolling element is a “conical roller” having a substantially conical shape constricted toward the inside of the radial direction DD of the roller 122.
  • the space between the raceway surface 161a of the outer raceway ring 106 and the raceway surface 171a of the inner raceway ring 107 is reduced according to the radial direction DD from the outer peripheral side toward the inner peripheral side. It is a "conical roller” with a truncated cone shape.
  • the outer race ring 106 and the inner race ring 107 each have a tapered surface corresponding to the inclined surface of the tapered roller 122.
  • the outer race ring 106 and the inner race ring 107 are arranged coaxially and facing each other with a predetermined interval in the axial direction DJ.
  • the outer raceway ring 106 and the inner raceway ring 107 are provided so as to be relatively rotatable about the rotation axis J1.
  • tapered rollers 122 are arranged at a certain interval in the circumferential direction DR.
  • the plurality of tapered rollers 122 are rotatably supported around the central axis of the tapered rollers 122 by the truncated cone-shaped cage 3 having an open bottom. The interval between the tapered rollers 122 adjacent to each other in the circumferential direction is kept constant.
  • the outer race ring 106 and the inner race ring 107 are formed in a taper shape such that the spacing between the outer race ring 106 and the inner race ring 107 gradually decreases at the same rate from the outer peripheral side toward the inner peripheral side.
  • the outer raceway 106 has a tapered raceway surface 161a that inclines in a direction away from the inner raceway 107 from the inner peripheral edge toward the outer peripheral edge.
  • the inner raceway 107 has a tapered raceway surface 171a that inclines in a direction away from the outer raceway 106 from the inner peripheral edge toward the outer peripheral edge.
  • the raceway surfaces 161 a and 171 a are conical and are in contact with the tapered rollers 122.
  • the plurality of tapered rollers 122 are arranged in a state of being sandwiched between the outer raceway ring 106 and the inner raceway ring 107 at a predetermined interval over the entire circumference in the circumferential direction DR of the raceway rings 106 and 107. Yes.
  • Each tapered roller 122 has a truncated cone shape whose diameter decreases from the outer peripheral edge toward the inner peripheral edge in the radial direction of the outer raceway ring 106.
  • the tapered inclined surface of the tapered roller 122 matches the inclined angle of the tapered raceway surface 161 a of the outer raceway ring 106 and the tapered raceway surface 171 a of the inner raceway ring 107. Therefore, the tapered roller 122 abuts on the tapered raceway surface 161 a of the outer raceway ring 106 and abuts on the tapered raceway surface 171 a of the inner raceway ring 107.
  • the cage 103 in the third embodiment has a truncated cone shape so as not to contact the tapered raceway surface 161a of the outer raceway ring 106 and the tapered raceway surface 171a of the inner raceway ring 107. It arrange
  • the pocket 132 has a frustoconical inner peripheral shape that can accommodate the rollers 122 corresponding to the outer peripheral shape of the frustoconical roller 122.
  • the roller 122 When the roller 122 is housed in the pocket 132, the roller 122 does not protrude from the outer open end 141 of the pocket 132 to the outside in the radial direction DD, or is substantially flush.
  • the pocket 132 is open in the thickness direction opening portions 143 and 143 on both sides of the cage 103 in the thickness direction DT.
  • the roller 122 protrudes in the thickness direction DT of the cage 103 through the thickness direction opening portion 143 in the pocket 132.
  • the pocket 132 restricts the roller 22 from coming off from the opening portion 143 in the thickness direction in the pocket 132.
  • the thickness direction opening portion 143 has a width larger than that of the frustoconical roller 122 when viewed in the direction in which the pocket 132 and the roller 122 extend (radial direction DD). Is also narrower. Therefore, the roller 122 does not come off from the opening portion 143 in the thickness direction in the pocket 132.
  • the pocket 132 extends in the radial direction DD, is open at the outer open end 141 outside the radial direction DD, and has a bottom 142 on the inner side in the radial direction and is closed. Therefore, the roller 122 can be inserted into the pocket 132 via the outer open end 141 (only) toward the inside of the radial direction DD, and the roller 122 inserted into the pocket 132 can be inserted into the outer open end. It can be extracted towards the outside of the radial direction DD (only) via the part 141.
  • the roller 122 has a substantially conical shape constricted toward the inside of the radial direction DD of the roller 122.
  • the rollers 122 are made of a fluororesin. Therefore, the peripheral speed difference of the roller 122 in the radial direction DD can be reduced, and slippage of the roller 122 can be reduced.
  • various problems caused by the sliding of the rollers 122 rotational resistance between the raceway surfaces 161a and 171a and 122 due to sliding friction increase, and wear of the rollers 122 and the raceway surfaces 161a and 171a increases on the outer peripheral side. Etc.
  • the roller 122 is made of a fluororesin, it has various properties such as chemical resistance, electrical insulation, heat resistance, low friction (self-lubricating), and machinability.
  • FIG. 14A is a front view showing the thrust roller bearing 201 according to the fourth embodiment of the present invention in a state where the bearing ring is omitted.
  • FIG. 14B is a plan view of FIG. 14A.
  • FIG. 15A is a view showing a state in which the rollers 222B are virtually taken out of the pocket 232B, and is a plan view showing the outer cage element 233B.
  • FIG. 15B is a diagram showing a state in which the rollers 222A are virtually taken out of the pockets 232A, and is a plan view showing the inner cage element 233A.
  • FIG. 14A is a front view showing the thrust roller bearing 201 according to the fourth embodiment of the present invention in a state where the bearing ring is omitted.
  • FIG. 14B is a plan view of FIG. 14A.
  • FIG. 15A is a view showing a state in which the rollers 222B are virtually taken out of the pocket 232B, and is a plan view showing the outer cage element
  • FIG. 16A is a sectional view showing the thrust roller bearing 201 according to the fourth embodiment of the present invention in a state including the race rings 206 and 207.
  • FIG. 16B is a developed cross-sectional view of FIG. 16A.
  • FIG. 17 is a cross-sectional view illustrating a state in which the race rings 206 and 207 and the rollers 222A and 222B are omitted from the state illustrated in FIG. 16A.
  • the fourth embodiment will be described mainly with respect to differences from the third embodiment, and components similar to those of the third embodiment are denoted by +100.
  • the description of the third embodiment and the description of the first embodiment are appropriately applied to points that are not particularly described. Also in the fourth embodiment, the same effects as in the third embodiment and the first embodiment are exhibited.
  • the thrust roller bearing 201 of the fourth embodiment is a thrust roller bearing that receives a thrust load and a radial load. As shown in FIGS. 14A to 17, the plurality of rollers 222 arranged radially on the raceway surfaces 261a and 271a.
  • a roller group 202 configured, a cage 203 having a pocket 232 for storing the rollers 222 configuring the roller group 202, an outer race ring 206, and an inner race ring 207 are provided.
  • the roller group 202 (202A, 202B) has a plurality of rows in the radial direction DD of the rollers 222 (in this embodiment, two rows). ) Arranged.
  • the roller 222 as a rolling element is a “conical roller” having a substantially conical shape constricted toward the inside of the radial direction DD of the roller 222.
  • the outer raceway 206 has a raceway surface 261 a on the side that supports the rollers (conical rollers) 222, and the inner raceway 207 is supported by the rollers (cone rollers) 222.
  • Side track surface 271a The spacing between the raceway surfaces 261a and 271a is formed in a tapered shape corresponding to the substantially conical shape of the roller 222 so as to gradually decrease at the same rate from the outer peripheral side to the inner peripheral side in the radial direction DD. Yes.
  • the diameter of the outer end of each roller 222A in the inner roller group 202A in the radial direction DD is larger than the diameter of the inner end of each roller 222B in the outer roller group 202B in the radial direction DD. small.
  • the thickness of the cage element 233A inside the radial direction DD is thinner than the thickness of the cage element 233B outside the radial direction DD.
  • the pocket 232A of the inner cage element 233A has a size corresponding to the inner roller 222A. That is, the roller 222A does not protrude from the outer open end 241 of the pocket 232A to the outside in the radial direction DD or is substantially flush with the pocket 232A.
  • the roller 222A protrudes in the thickness direction DT of the cage element 233A rather than the inner cage element 233A via the thickness direction opening portion 243 in the pocket 232A.
  • the pocket 232A restricts the roller 222A from coming off from the opening 243 in the thickness direction in the pocket 232A.
  • the roller 222A does not come out of the thickness direction opening portion 243 in the pocket 232A.
  • the roller 222A can be inserted into the pocket 232A inward in the radial direction DD only through the outer open end 241.
  • the roller 222A inserted into the pocket 232A can be inserted through the outer open end 241. Can be extracted toward the outside of the radial direction DD only.
  • the pocket 232B of the outer cage element 233B has a size corresponding to the outer roller 222B. That is, the roller 222B does not protrude from the outer open end 241 of the pocket 232B to the outside in the radial direction DD or is substantially flush with the pocket 232B.
  • the roller 222B protrudes in the thickness direction DT of the cage element 233B from the outside cage element 233B via the thickness direction opening portion 243 in the pocket 232B.
  • the pocket 232B restricts the roller 222B from coming off from the opening 243 in the thickness direction in the pocket 232B. Therefore, the roller 222B does not come out of the thickness direction opening portion 243 in the pocket 232B.
  • the roller 222B can be inserted into the pocket 232B inward of the radial direction DD only through the outer open end 241.
  • the roller 222B inserted into the pocket 232B can be inserted through the outer open end 241. Can be extracted toward the outside of the radial direction DD only.
  • the number of rollers 222B constituting the outer roller group 202B in the radial direction DD is the number of rollers 222A constituting the inner roller group 202A in the radial direction DD (6 in the present embodiment). More).
  • the first roller 222Am and the second roller 222Bn respectively constitute separate portions of the virtual substantially conical long roller 222C that connects the two.
  • the same effect as that of the third embodiment is achieved.
  • the effect similar to 1st Embodiment is also show
  • the length of the roller 222 can be shortened and the peripheral speed difference of the roller 222 in the radial direction DD can be reduced as compared with the case where a long roller is used in one row of rollers.
  • the slip of the roller 222 can be reduced.
  • various troubles caused by the sliding of the rollers 222 (the rotational resistance between the raceway surfaces 261a and 271a and 222 due to the sliding friction increases, and wear of the rollers 222 and the raceway surfaces 261a and 271a increases on the outer peripheral side. Etc.) can be suppressed.
  • the number of rows of the roller group 2 and the pocket group 31 may be three or more. In that case, it is preferable that the number of rollers 22 constituting the roller group 2 is increased for each cage element 33 adjacent to the radial direction DD. In the first embodiment and the second embodiment, the number of rows of the roller group 2 and the pocket group 31 may be one.
  • the number of rollers 22 constituting the roller group 2 is not limited.
  • a plurality of rollers 22 can be accommodated in one pocket 32 side by side in the axial direction.
  • the diameter of the plurality of rollers 22 may be the same or different for each cage element 33 or in the cage 3 as a whole.
  • the structure of the pocket 32 is not limited to the structure of the pocket 32 in the embodiment.
  • the pocket 32 may have a structure that restricts the roller 22 from coming off from the outer open end 41 in the radial direction DD in the pocket 32.
  • FIG. 18A is a perspective view showing a first modified example, and shows an outer race 6A.
  • FIG. 18B is a perspective view showing a first modification and shows an inner race 7A.
  • FIG. 19 is a cross-sectional view showing a first modification, corresponding to FIG. 8B. As shown in FIG. 18A, FIG. 14B and FIG.
  • the outer race 6A includes an annular raceway portion 61 on which a raceway surface 61a on which a plurality of rollers 22 roll, A short cylindrical outer peripheral wall portion 62 extending from the outer peripheral end perpendicular to the raceway surface 61a, and a cylindrical support peripheral wall portion 63 extending from the inner peripheral end of the raceway portion 61 perpendicular to the raceway surface 61a. And a first retaining engagement portion 64 integrally.
  • the support peripheral wall 63 extends to the opposite side of the outer peripheral wall 62 with respect to the track 61.
  • the first retaining engagement portion 64 is a concave portion that is recessed outward in the radial direction DD, and is annularly provided on the inner peripheral portion of the outer peripheral wall portion 62 so as to extend in the circumferential direction DR.
  • the inner race 7A includes an annular raceway portion 71 on which a raceway surface 71a on which a plurality of rollers 22 roll, and a cylindrical inner portion extending perpendicularly to the raceway surface 71a from the inner peripheral end of the raceway portion 71.
  • the peripheral wall 72A and the second retaining engagement portion 74 are integrally provided.
  • the second retaining engagement portion 74 is a convex portion that protrudes outward in the radial direction DD, and is provided in an annular shape on the outer peripheral portion of the track portion 71 so as to extend in the circumferential direction DR.
  • the second retaining engagement portion 74 is disposed on the first retaining engagement portion 64, and The first retaining engagement portion 64 and the second retaining engagement portion 74 are engaged.
  • both the first retaining engagement portion 64 and the second retaining engagement portion 74 are annular extending in the circumferential direction DR, the rotation of the inner race 7A with respect to the outer race 6A is not substantially hindered. That is, according to such a configuration, it is possible to achieve both prevention of the inner race 7A from coming off the outer race 6A and smooth rotation of the inner race 7A with respect to the outer race 6A. Further, since the distance between the raceway surface 61a of the outer race 6A and the raceway surface 71a of the inner race 7A can be maintained, smooth rolling of the rollers 22 with respect to the outer race 6A and the inner race 7A can be realized.
  • the inner peripheral wall portion 72A of the inner race 7A is inserted into the support peripheral wall portion 63 of the outer race 6A. Therefore, the inner race 7A can smoothly rotate with respect to the outer race 6A.
  • FIG. 20 is a plan view showing a second modification, corresponding to FIG. 1A.
  • the roller group 2 is arranged in a row in the radial direction DD of the rollers 22.
  • the retainer 3A includes an annular drop prevention member 36 on the outer peripheral portion thereof.
  • the inner peripheral part of the slip-off preventing member 36 faces the outer open end 41 of the pocket 32 of the cage 3 ⁇ / b> A, and therefore functions as a stopper for the rollers 22 from coming off from the outer open end 41 of the pocket 32.
  • the omission prevention member 36 can also be provided in a mode in which the roller group 2 is arranged in a plurality of rows in the radial direction DD of the rollers 22 as shown in FIG. 1A.
  • the first embodiment or the second embodiment is used instead of the retainer 103 that holds the tapered roller 122 and the outer race ring 106 and the inner race ring 107 corresponding to the tapered roller 122 in the third embodiment.
  • a configuration in which a plurality of rows of roller groups 2 including cylindrical rollers 22 are arranged in the radial direction DD can be combined.
  • the outer raceway and the inner raceway are arranged in parallel so as to correspond to the outer peripheral surface of the cylindrical roller 22.
  • first modification and the second modification can be applied to the third embodiment.
  • portions corresponding to the outer race ring 106 and the inner race ring 107 in the third embodiment can be provided in the housing and the shaft-like rotating member, respectively.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

Cette butée à rouleaux (1) qui reçoit au moins une charge de poussée est pourvue d'un groupe de rouleaux (2) comprenant de multiples rouleaux (22) disposés radialement sur une surface de chemin de roulement, et agencés en de multiples rangées dans une direction radiale (DD) des rouleaux (22), et d'un support (3) qui a une pluralité de rangées de poches (32) qui logent en leur sein les rouleaux (22) constituant le groupe de rouleaux (2). Le nombre de rouleaux (22B) constituant un groupe de rouleaux (2B) au niveau du côté externe dans la direction radiale (DD) est supérieur au nombre de rouleaux (22A) constituant un groupe de rouleaux (2A) au niveau du côté interne dans la direction radiale (DD).
PCT/JP2016/072831 2015-08-07 2016-08-03 Butée à rouleaux WO2017026353A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2015157370 2015-08-07
JP2015-157370 2015-08-07

Publications (1)

Publication Number Publication Date
WO2017026353A1 true WO2017026353A1 (fr) 2017-02-16

Family

ID=57984385

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2016/072831 WO2017026353A1 (fr) 2015-08-07 2016-08-03 Butée à rouleaux

Country Status (3)

Country Link
JP (1) JP6762796B2 (fr)
TW (1) TW201712240A (fr)
WO (1) WO2017026353A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110770457A (zh) * 2017-04-26 2020-02-07 野渡透一 圆锥滚子轴承

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11162534B1 (en) * 2020-04-29 2021-11-02 Schaeffler Technologies AG & Co. KG Multiple row thrust bearings

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000240645A (ja) * 1999-02-22 2000-09-05 Nkk Corp スラストベアリング
JP2005083467A (ja) * 2003-09-08 2005-03-31 Nsk Ltd 円筒ころ軸受
JP2005331054A (ja) * 2004-05-21 2005-12-02 Ntn Corp 円すいころ軸受およびトランスミッションのパイロット部軸支持構造

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000240645A (ja) * 1999-02-22 2000-09-05 Nkk Corp スラストベアリング
JP2005083467A (ja) * 2003-09-08 2005-03-31 Nsk Ltd 円筒ころ軸受
JP2005331054A (ja) * 2004-05-21 2005-12-02 Ntn Corp 円すいころ軸受およびトランスミッションのパイロット部軸支持構造

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110770457A (zh) * 2017-04-26 2020-02-07 野渡透一 圆锥滚子轴承
US10883537B2 (en) 2017-04-26 2021-01-05 Shuichi NOWATARI Tapered roller bearing

Also Published As

Publication number Publication date
TW201712240A (zh) 2017-04-01
JP2017036831A (ja) 2017-02-16
JP6762796B2 (ja) 2020-09-30

Similar Documents

Publication Publication Date Title
JP2006322564A (ja) ベアリング
WO2017026353A1 (fr) Butée à rouleaux
CN105190065A (zh) 具有圆筒形引导接触表面和径向向外转动的向内凸缘的球形滚柱轴承保持架
JP2016138572A (ja) スラストころ軸受
JP6914712B2 (ja) 円錐ころ軸受
JP2012042031A (ja) 軸受装置
JP2010025191A (ja) 自動調心ころ軸受
US8920039B2 (en) Tandem rolling bearings with open cage
JP2014105809A (ja) 転がり軸受用保持器
JP2015021550A (ja) 転がり軸受
JP2016191451A (ja) 円すいころ軸受の組立方法
WO2019146768A1 (fr) Roulement à billes angulaire
TWI655374B (zh) Radial roller bearing
JP2010159787A (ja) スラストころ軸受
JP2009210078A (ja) 自動調心ころ軸受
JP2016200265A (ja) スラストころ軸受
JP2008064230A (ja) スラスト軸受
JP2006291979A (ja) スラストころ軸受
JP2007225061A (ja) 複列スラストころ軸受
WO2014189042A1 (fr) Roulement à rouleaux coniques
JP2007270990A (ja) 樹脂製冠形保持器
JP3199240U (ja) 外輪回転形転がり軸受及び圧延機
JP6759544B2 (ja) スラストころ軸受
JP3199240U7 (fr)
JP2006194375A (ja) スラスト円筒ころ軸受

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16835050

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 16835050

Country of ref document: EP

Kind code of ref document: A1