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WO2010146955A1 - Rouleaux équipés d'élément de retenue - Google Patents

Rouleaux équipés d'élément de retenue Download PDF

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Publication number
WO2010146955A1
WO2010146955A1 PCT/JP2010/058296 JP2010058296W WO2010146955A1 WO 2010146955 A1 WO2010146955 A1 WO 2010146955A1 JP 2010058296 W JP2010058296 W JP 2010058296W WO 2010146955 A1 WO2010146955 A1 WO 2010146955A1
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WO
WIPO (PCT)
Prior art keywords
roller
connecting member
circumferential direction
ring
ring portion
Prior art date
Application number
PCT/JP2010/058296
Other languages
English (en)
Japanese (ja)
Inventor
いず美 大橋
貞経 風間
Original Assignee
Ntn株式会社
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 Ntn株式会社 filed Critical Ntn株式会社
Publication of WO2010146955A1 publication Critical patent/WO2010146955A1/fr

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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
    • 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
    • F16C33/467—Details of individual pockets, e.g. shape or roller retaining means
    • F16C33/4682—Details of individual pockets, e.g. shape or roller retaining means of the end walls, e.g. interaction with the end faces of the rollers
    • 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
    • F16C33/4611—Cages for rollers or needles with hybrid structure, i.e. with parts made of distinct materials

Definitions

  • the present invention relates to a roller with a cage that is attached to an annular gap between an outer periphery of a rotary shaft and an inner periphery of a support member in order to support the rotary shaft, and in particular, the cage itself so that the roller does not fall off from the cage.
  • the present invention relates to a structure of a cage that holds a roller in a pocket.
  • Patent Document 1 Japanese Patent Laid-Open No. 2000-74071
  • Patent Document 1 a technique as described in Japanese Patent Laid-Open No. 2000-74071
  • the cage-and-roller described in Patent Document 1 allows the number of rollers to be arranged in a large number, with the column portion of the cage being shifted from the pitch circle of the roller row. The load capacity of the roller could be increased.
  • the conventional cage and roller described above causes problems as described below. That is, between the adjacent rollers, the outer column is positioned radially outside the pitch circle of the roller row, and the inner column is positioned radially inside, and these columns are separated from the inner walls of the pair of ring portions facing each other. Since this extends in the axial direction, the inner space of the cage is closed by the outer strut, the inner strut, and the pair of ring portions, and there is a problem that it is difficult for the lubricating oil to flow into the inner space. For this reason, lubrication of the rollers held in the inner space between the outer column, the inner column, and the pair of ring portions becomes insufficient.
  • an object of the present invention is to provide a roller with a cage having a high load capacity capable of smoothly supplying lubricating oil to the inner space of the cage.
  • a roller with a cage comprises a pair of ring parts spaced apart in the axial direction and a cage having a plurality of ring parts arranged at equal intervals in the circumferential direction and connecting the ring parts, and a circumferential direction. And a plurality of rollers arranged in pockets formed between adjacent column portions, the column portions being located radially outside the roller pitch circle, and the interval between the column portions adjacent in the circumferential direction.
  • the pair of ring portions are smaller than the diameter of the roller and protrude in the inner diameter direction from the inner periphery of the ring portion at the same position in the circumferential direction as the column portion and radially inward of the pitch circle of the rollers, Has a projecting member that restricts the inner surface from slipping out radially inward.
  • the projecting member since the projecting member has the projecting member projecting in the inner diameter direction from the inner peripheral edge of the ring portion at the same position in the circumferential direction as the column portion and radially inward of the pitch circle of the rollers, It is possible to relatively reduce the radial dimension of the ring portion between two projecting members that do not extend in the axial direction from the inner wall and are adjacent in the circumferential direction. Therefore, the lubricating oil can be supplied from the outside of the ring portion in the axial direction to the inner space of the cage, and the lubricating oil is sent between the ring portion and the end portion facing each other to improve the lubricating performance of the roller. Can do.
  • the protruding member protrudes inward in the axial direction from the ring portion at a position separated from the virtual circle including the inner peripheral edge of the ring portion in the inner diameter direction. According to such an embodiment, it becomes possible for the lubricating oil to easily circulate inward in the axial direction of the protruding member, and then flow into the ring portion and the end portion. Therefore, the lubrication performance of the roller is further improved.
  • the projecting member may have a shape like a pillar portion laid between a pair of ring portions.
  • the projecting members are projections that extend from the pair of ring portions in the axial direction and are not connected to each other. Also good.
  • the protruding member may abut against the rolling surface of the roller and restrict the roller from coming out radially inward.
  • the roller has a boundary between the roller end surface and the rolling surface.
  • the protruding member includes a pair of axial projections that protrude inward in the axial direction from the pair of ring portions and face each other so that the tips approach each other, and the axial projections are chamfered portions at both ends of the roller. And abut each.
  • the pair of protrusions corresponding to the protruding members abuts the chamfered portions at both ends of the roller, the pair of protrusions are spaced approximately the same as the length of the roller rolling surface (roller effective length). It is possible to separate with. Therefore, the lubricating oil can be easily supplied from the radially inner side of the cage to the inner space of the cage, and the lubricating performance of the rollers can be improved.
  • the radially outer surface of the axial protrusion is a tapered surface that is inclined away from the roller pitch circle toward the inner side in the axial direction. According to such an embodiment, the lubricating oil can flow inward in the axial direction of the protruding member and flow into the axial protrusion, thereby improving the lubrication performance of the roller.
  • the axial projection has a shape in which the circumferential dimension gradually decreases toward the distal end side in the axial direction.
  • the axial protrusion has a cross-sectional shape in which the circumferential dimension gradually increases as it goes radially inward in a cross section perpendicular to the axial line.
  • the shape of the axial projection that contacts the chamfered portion of the roller is suitable, and the roller can be suitably prevented from falling off in the inner diameter direction.
  • the connecting portion of the projecting member with the inner peripheral edge of the ring portion has a cross-sectional shape in which the circumferential dimension gradually increases toward the radially outer side in a cross section perpendicular to the axis.
  • the present invention is not limited to an embodiment, and one protruding member may be implanted in the ring portion one by one, but preferably at least two adjacent protruding members arranged in the circumferential direction are adjacent to each other.
  • the protruding members are connected by a connecting member extending in the circumferential direction. According to this embodiment, it becomes possible to attach a some protrusion member to a ring part simultaneously, and the assembly efficiency at the time of manufacture of the roller with a holder which concerns on this invention improves.
  • an inner wall of the ring portion facing the roller end face is formed with a notch that is recessed in the axial direction, and the connecting member is fitted with the notch. May be combined. According to this embodiment, the connecting member can be firmly fixed to the ring portion.
  • the connecting member may extend at an angle of less than 360 degrees in the circumferential direction, but may extend over the entire circumference of 360 degrees. That is, the connecting member may be an endless ring and may extend over the entire circumference of the ring portion. In this case, the connecting member can be bent and attached from the inside in the radial direction of the ring, and the assembly of the roller with cage is facilitated.
  • the protruding member and the connecting member are made of resin. Thereby, a protrusion member can be easily manufactured by injection molding.
  • the connecting member may be C-shaped, for example, and the one end and the other end in the circumferential direction may face each other with a gap opened in the circumferential direction.
  • the protruding member and the connecting member are made of resin. Thereby, a protrusion member can be easily manufactured by injection molding.
  • the connecting member is composed of a plurality of arc-shaped segments, and the plurality of arc-shaped segments are attached along the entire circumference of the ring portion, and are endless.
  • An annular body may be formed.
  • Two, three, or four or more connecting members may be used.
  • the connecting members have a 180-degree arc shape, and two such 180-degree connecting members are combined into an endless annular shape and attached to the ring portion.
  • the protruding member and the connecting member are preferably made of metal or resin, but are preferably made of metal. In the case of metal, the strength of the protruding member can be improved.
  • the cage ring faces the roller end face. Therefore, as a preferred embodiment, the inner wall of the connecting member attached to the ring portion and facing the end surface of the roller is set back in the axial direction from the wall surface of the pocket facing the end surface of the roller. According to this embodiment, since the inner wall of the connecting member is retracted in the axial direction with respect to the wall surface of the pocket, it is possible to prevent the rollers from coming into contact with the inner wall of the connecting member.
  • the end surface of the roller held by the cage is the axis line. In the direction view, it appears radially inward from the inner periphery of the ring portion. Therefore, the lubricating oil can be easily supplied in the axial direction from the outside of the ring portion to the internal space of the cage, and the lubricating performance of the rollers can be improved. Therefore, a roller with a cage having a high load capacity and excellent durability can be realized.
  • FIG. 2 is a longitudinal sectional view showing the same embodiment taken along a line II-II in FIG.
  • FIG. 3 is a cross-sectional view showing a portion III in FIG. 2 enlarged and taking out only a connecting member.
  • It is a general view which shows the state which looked at the connection member from the taking-out axial direction inner side.
  • It is a front view which shows the state which looked at the connection member of FIG. 4 from the axial direction outer side.
  • It is explanatory drawing which expands and shows the state seen from the arrow VI of FIG. It is explanatory drawing which shows the dimensional relationship of each member when a roller temporarily approaches to the axial direction one side.
  • FIG. 1 shows a roller with a cage according to this embodiment, in which the upper half is a cross-sectional view and the lower half is a front view.
  • FIG. 2 is a vertical cross-sectional view of the same embodiment, in which rollers and the like are omitted in several places.
  • FIG. 3 is a cross-sectional view showing the portion III of FIG.
  • the roller with cage of this embodiment includes a roller 11 and a cage 12 and is used as a bearing for a general planetary gear set.
  • the roller 11 basically has a cylindrical shape such as a needle roller, and has chamfered portions 13 at the boundary between the roller end faces and the rolling surface.
  • the chamfered portion 13 may be chamfered in a known manner and is formed in an annular shape.
  • both ends of the roller 11 may have a spherically bulging shape, and in this case as well, it is understood that chamfered portions are provided at the boundary between both ends of the roller and the rolling surface. I want to be.
  • the division between the chamfered portion 13 and the rolling surface 11t is indicated by a one-dot chain line in FIG. 2 so that the position of the chamfered portion 13 can be easily distinguished.
  • the retainer 12 has a pair of ring portions 14 and 14 that are separated in the axial direction, and a column portion 15 that extends in the axial direction and connects between the ring portions 14 and 14.
  • a plurality of pillar portions 15 are arranged at equal intervals in the circumferential direction, and a pocket 21 is formed between two pillar portions 15 and 15 adjacent in the circumferential direction.
  • the ring portion 14 has a flat disk shape and an annular shape, and an outer peripheral end thereof is bent at a right angle so as to be integrally coupled to the column portion 15.
  • the ring portion 14 and the column portion 15 are formed by machining or pressing, and are made of metal. Further, it may be made of resin by machining or injection molding.
  • a plurality of column portions 15 are arranged at equal intervals in the circumferential direction around the central axis O of the cage 12.
  • the roller 11 is disposed between the column portions 15 and 15 adjacent to each other in the circumferential direction.
  • the column part 15 is located radially outside the pitch circle PCD of the roller 11, and the interval between the column parts 15, 15 adjacent in the circumferential direction is smaller than the diameter of the roller 11. For this reason, the column part 15 prevents the roller 11 in the pocket 21 from dropping out of the cage 12 in the outer diameter direction.
  • the pair of ring portions 14 have projecting members 16 that project in the inner diameter direction from the inner peripheral edge 14i of the ring portion 14 at the same position in the circumferential direction as the column portions 15 and radially inward of the pitch circle PCD.
  • the interval between the two projecting members 16, 16 adjacent in the circumferential direction is smaller than the diameter of the roller 11, and further smaller than the diameter of the chamfered portion 13, and the projecting member 16 abuts on the roller 11 and is in the pocket 21.
  • the roller 11 is prevented from coming out of the cage 12 radially inward.
  • the distal end portion of the projecting member 16 includes a pair of axial projections 17 that project inward from the pair of ring portions 14 and 14 in the axial line O direction and face each other so that the distal ends approach each other.
  • the axial protrusion 17 contacts the chamfered portions 13 at both ends of the roller 11.
  • the chamfered portion 13 of the roller 11 is restricted from coming out of the cage 12 inward in the radial direction by the two axial projections 17 adjacent in the circumferential direction.
  • the protruding member 16 has a shape like an isosceles trapezoid when viewed in the direction of the axis O. That is, the protruding member 16 has a cross-sectional shape in which the circumferential dimension gradually increases toward the radially inner side in a cross section perpendicular to the axis O. Such a cross-sectional shape is suitable for holding the circular roller 11 from the radially inner side of the roller pitch circle PCD when viewed in the direction of the axis O.
  • the radial dimension ⁇ of the ring portion 14 can be made smaller between the adjacent protruding members 16 than the conventional roller with cage. Accordingly, it is possible to ensure the flow of the lubricating oil from the outside of the cage 12 in the direction of the axis O to the inside of the direction of the axis O, and the lubricating oil can be easily supplied between the ring inner wall 14f and the 11 end facing each other. Can be supplied to.
  • FIG. 3 is an enlarged view of the region indicated by III in FIG. 2 for explaining the shape of the protruding member 16.
  • the radially outer surface 17 t of the axial protrusion 17 is a tapered surface that is inclined away from the pitch circle PCD of the roller 11 toward the inner side in the axial direction, that is, the front end side.
  • the protruding member 16 is separated from the virtual circle including the inner peripheral edge 14i of the ring portion in the inner diameter direction, so that the lubricating oil that has turned inward in the direction of the axis O of the protruding member 16 can flow into the inner space of the cage 12. .
  • the axial protrusion 17 has a shape in which the radial dimension gradually decreases toward the distal end side in the axis O direction. Such a shape is suitable for coming into contact with the chamfered portion 13 whose diameter increases as it approaches the rolling surface 11t while decreases in diameter as it approaches the ring portion 14.
  • FIG. 4 to 6 are views showing the connecting member 18 that connects the protruding members 16 to each other in the circumferential direction. That is, FIG. 4 is an overall view showing a state in which the connecting member 18 is viewed from the inside in the take-out axis O direction, and corresponds to the upper half of FIG.
  • FIG. 5 is a front view showing a state in which the connecting member 18 is viewed from the outside in the axial direction
  • FIG. 4 and FIG. FIG. 6 is an explanatory view showing, in an enlarged manner, a state in which the connecting member 18 is viewed in the direction of the arrow VI in FIG.
  • the connecting member 18 is an annular shape made of resin, and has a strip shape whose radial dimension is larger than the axial thickness.
  • the connecting member 18 is integrally formed with the resin protruding member 16 such that the protruding member 16 protrudes radially inward from the inner peripheral edge of the connecting member 18.
  • the surface 18f on the side from which the axial projection 17 protrudes faces the end surface of the roller 11 in a state of being attached and fixed to the ring portion 14.
  • the back surface 18t on the side where the axial projection 17 does not protrude is closely fixed to the ring portion 14.
  • a step 19 (FIG. 2) that is recessed in the direction of the axis O is formed on the entire inner wall of the ring portion 14, and the inner diameter portion of the ring portion 14 including the inner peripheral edge is a notch for accommodating the connecting member 18.
  • the notch is formed along the inner wall of the ring portion 14 that is recessed in the direction of the axis O and faces the end surface of the roller 11.
  • the notch extends continuously in the circumferential direction along the inner peripheral edge of the ring portion 14. Since the wall surface 14b in the notch is depressed more than the inner wall 14f on the outer diameter side, the thickness of the inner peripheral edge of the ring portion 14 is thinner than the thickness of the outer peripheral edge.
  • the connecting member 18 is fixed to the wall surface 14b and fits into the notch.
  • it is desirable that the depth in the axis O direction of the notch is substantially the same as the thickness of the connecting member 18 in the axis O direction.
  • the diameter of the inner peripheral edge of the connecting member 18 is the same as or larger than the diameter of the inner peripheral edge of the ring portion 14.
  • the connecting member 18 is fixedly attached to the ring portion 14, and the entire back surface 18 t of the connecting member is in close contact with the ring portion 14 in a state where the connecting member 18 is fitted to the above-described notch portion. It does not appear radially inward from the inner peripheral edge of the portion 14.
  • the surface 18 f of the connecting member is flush with the inner wall of the ring portion 14. Alternatively, it is recessed from the inner wall 14f of the ring portion 14 in the direction of the axis O. Alternatively, as shown in FIG. 7 described later, it protrudes in the direction of the axis O from the inner wall 14 f and retreats in the direction of the axis O from the wall surface 21 f of the pocket portion 21.
  • connecting member 18 fixed to one ring portion 14 may be colored with a color different from that of the connecting member 18 fixed to the other ring portion 14. Thereby, identification of bearings, such as tolerance of the roller 11, can be visually recognized easily.
  • the axial protrusion 17 has a shape in which the circumferential dimension gradually decreases toward the distal end side in the axis O direction. That is, the axial protrusion 17 has a tapered shape. Such a shape is suitable for coming into contact with the chamfered portion 13 whose diameter increases as it approaches the rolling surface 11t while decreases in diameter as it approaches the ring portion 14.
  • the connecting member 18 shown in FIGS. 4 and 5 is an endless ring and extends over the entire circumference of the ring portion 14.
  • FIG. 7 is a longitudinal sectional view showing a dimensional relationship between the roller 11 and the cage 12.
  • a pocket 21 of the cage 12 that is partitioned in four directions by a pair of ring portions 14 and two adjacent column portions 15 accommodates the rollers 11.
  • the roller 11 has a tolerance in the axial length Lk, and the cage 12 accommodates the roller 11 in a freely rotatable manner. Therefore, the axial dimension Ld of the pocket 21 is larger than the axial length Lk of the roller 11, A gap is generated between the both ends of 11 and the ring portion 14. Thereby, the roller 11 can freely move in the axial direction between the pair of ring portions 14 and 14.
  • these axial projections abut against the chamfered portions at both ends of the roller, respectively, refers to a standard state in which the roller 11 is located in the central portion of the pocket 21 in the axial direction. It does not include a temporary state. Even in an embodiment in which the tip of one projection member is temporarily in contact with the roller rolling surface when the roller 11 approaches one side in the axial direction, the tip of the pair of axial projections 17 is a roller in a standard state. If the rollers 11 are held between the pair of ring portions 14 by abutting the chamfered portions 13 at both ends of the ring 11, it should be understood that they are included in the claims of the present invention.
  • the surface 18f of the connecting member 18 that corresponds to the inner wall that is attached to the ring portion 14 and faces the end surface of the roller 11 retreats in the axial direction from the wall surface 21f of the pocket 21 that faces the end surface of the roller 11. Yes.
  • the pocket wall surface 21 f receives the roller 11, so that the roller 11 can be prevented from coming into contact with the connecting member 18. Therefore, the burden on the connecting member 18 can be reduced and the durability performance of the cage 12 can be improved.
  • a plurality of projecting members 16 arranged in the circumferential direction are connected to each other by arc-shaped connecting members 18.
  • the connecting member 18 extends in the circumferential direction around the axis O, and its radial height is larger than the thickness in the axis O direction. Therefore, the connecting member 18 has high rigidity against the radial external force, and the ring portion 14 made of a flat thin plate material. Configure part or all of the circumference.
  • the connecting member 18 and the protruding member 16 are integrally coupled, but are formed separately from the ring portion 14.
  • the connecting member 18 of the present embodiment is an endless ring as shown in FIG. 4 and extends over the entire circumference of the ring portion 14. Thereby, all the some protrusion members 16 can be attached to the ring part 14 simultaneously, and assembly efficiency is good.
  • the connecting member 18 may be C-shaped as in the modified embodiment shown in FIG. 8, and may be opposed with a gap 22 having one end in the circumferential direction and the other end opened in the circumferential direction.
  • the connecting member 28 shown in FIG. 8 is substantially the same as the connecting member 18, and the surface 28f faces the roller end, but differs in that it extends in the range of 340 to 350 degrees in the circumferential direction.
  • the gap width of the gap 22 is smaller than the distance between the adjacent protruding members 16 and 16. If it is the shape shown in FIG. 8, it will become possible to reduce the diameter of the connection member 28 in the manufacturing process of the roller with cage and attach it from the inside in the radial direction of the ring portion 14, and the assembly of the roller with cage will be easy.
  • the protruding member 16 and the connecting member 28 are preferably made of resin. Thereby, the protrusion member 16 can be easily manufactured by injection molding.
  • the connecting member 18 may be a 180-degree arc-shaped segment 38 as shown in FIG. 9, and two of them may constitute a 360 ° annular body. Two connecting members of the arc-shaped segment 38 are combined to make an endless annular shape and attached along the entire circumference of the ring portion 14.
  • the surface 38f faces the roller end.
  • the projecting member 16 and the arc-shaped segment 38 may be made of resin by machining or injection molding, but in the case of FIG. 9, the projecting member 16 and the arc-shaped segment 38 that becomes the connecting member are preferably made of metal. is there. Thereby, the intensity
  • FIG. 10 is a front view showing a modified embodiment of the present invention, and shows a state viewed from the outside in the axis O direction.
  • the same components as those in the above-described embodiments are denoted by the same reference numerals, description thereof is omitted, and different configurations are described below.
  • the inner peripheral edge 23 of the connecting member 18 smoothly connects the protruding members 16 adjacent in the circumferential direction with a curve.
  • the curve of the inner peripheral edge 23 is an arc that is recessed in the outer diameter direction of the bearing, and has a diameter smaller than the diameter of the circumference in which the connecting member 18 itself extends. According to such a modified embodiment, the rigidity of the connecting member 18 can be increased.
  • FIG. 11 is a front view showing a modified embodiment of the present invention, and shows a state viewed from the outside in the axis O direction.
  • the same components as those in the above-described embodiments are denoted by the same reference numerals, description thereof is omitted, and different configurations are described below.
  • both ends 16d in the circumferential direction of the protruding member 16 connected to the inner peripheral edge 24 of the connecting member 18 are formed in an inverted C shape in comparison with the protruding member 16 shown in FIG. That is, the connecting portion of the projecting member 16 shown in FIG.
  • connection part with the connecting member 18 has an inverted C shape in which the circumferential width increases from the radially inner side toward the radially outer side. For this reason, the crossing angle between the circumferential ends 16d of the projecting member 16 and the inner peripheral edge 24 of the connecting member becomes larger than 90 degrees, and the corner becomes inconspicuous. Therefore, it is possible to alleviate stress concentration at the connection portion between the protruding member 16 and the connecting member 18, and the durability performance of the cage 12 can be improved.
  • the circumferential dimension gradually increases as the connecting portion of the projecting member 16 with the ring inner peripheral edge 14 i goes radially outward in the cross section perpendicular to the axis O. Since it has a cross-sectional shape, it is possible to alleviate the concentration of stress at the connection location, and the durability performance of the cage 12 can be improved.
  • the axial protrusion 17 protruding inward in the axial O direction from the connecting member 18 has the shape shown in FIGS. 3 and 6 described above. Of course.
  • the roller with a retainer according to the present invention is used for a rolling bearing such that it is installed in an annular gap between the center hole of the planetary gear and the outer periphery of the crankshaft in the planetary gear reduction device to rotatably support the planetary gear.

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

Abstract

L'invention porte sur un élément de retenue (12), qui comporte une paire de sections annulaires (14) séparées l'une de l'autre dans la direction de l'axe (O), ainsi que des sections de colonne (15) disposées à des espacements égaux dans la direction circonférentielle, et reliant les sections annulaires (14) entre elles. Des rouleaux (11) sont disposés à l'intérieur de poches (21) formées entre les sections de colonne (15) adjacentes les unes aux autres dans la direction circonférentielle. Les sections de colonne (15) sont situées sur le côté externe du cercle primitif (PCD) des rouleaux (11) dans la direction radiale, et la distance entre des sections de colonne (15) adjacentes les unes aux autres dans la direction circonférentielle est inférieure au diamètre d'un rouleau (11). La paire de sections annulaires (14) comportent des éléments de saillie (16) faisant saillie dans la direction de diamètre interne à partir des bords périphériques internes des sections annulaires (14) en des positions qui sont les mêmes positions que les sections de colonne (15) dans la direction circonférentielle et qui sont situées sur le côté interne du cercle primitif (PCD) des rouleaux (11) dans la direction radiale, et les éléments de saillie (16) empêchent les rouleaux à l'intérieur des poches (21) de sortir vers le côté interne dans la direction radiale.
PCT/JP2010/058296 2009-06-16 2010-05-17 Rouleaux équipés d'élément de retenue WO2010146955A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2009-143589 2009-06-16
JP2009143589A JP5329313B2 (ja) 2009-06-16 2009-06-16 保持器付きころ

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WO2010146955A1 true WO2010146955A1 (fr) 2010-12-23

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56147923A (en) * 1980-04-15 1981-11-17 Nippon Seiko Kk Roller bearing with retainer
JPS5913122A (ja) * 1982-07-05 1984-01-23 エスカーエフ・シユタイル・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフトウング ころがり軸受用の２材料窓付き保持器
JP2000074071A (ja) * 1998-08-28 2000-03-07 Nippon Seiko Kk ケージアンドローラ

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56147923A (en) * 1980-04-15 1981-11-17 Nippon Seiko Kk Roller bearing with retainer
JPS5913122A (ja) * 1982-07-05 1984-01-23 エスカーエフ・シユタイル・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフトウング ころがり軸受用の２材料窓付き保持器
JP2000074071A (ja) * 1998-08-28 2000-03-07 Nippon Seiko Kk ケージアンドローラ

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JP5329313B2 (ja) 2013-10-30
JP2011001977A (ja) 2011-01-06

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