WO2010146955A1 - Retainer-equipped rollers - Google Patents

Retainer-equipped rollers 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
French (fr)
Japanese (ja)
Inventor
いず美 大橋
貞経 風間
Original Assignee
Ntn株式会社
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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/en

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    • 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

A retainer (12) is provided with a pair of ring sections (14) separated from each other in the direction of the axis (O), and also with column sections (15) arranged at equal spacings in the circumferential direction and connecting the ring sections (14) together. Rollers (11) are disposed within pockets (21) formed between the column sections (15) adjacent to each other in the circumferential direction. The column sections (15) are located on the outer side of the pitch circle (PCD) of the rollers (11) in the radial direction, and the distance between columns sections (15) adjacent to each other in the circumferential direction is less than the diameter of a roller (11). The pair of ring sections (14) is provided with protrusion members (16) protruding in the inner diameter direction from the inner peripheral edges of the ring sections (14) at positions which are the same positions as the column sections (15) in the circumferential direction and are located on the inner side of the pitch circle (PCD) of the rollers (11) in the radial direction, and the protrusion members (16) prevent the rollers within the pockets (21) from coming out to the inner side in the radial direction.

Description

保持器付きころRoller with cage
　本発明は、回転軸を支持するために、回転軸の外周と支持部材の内周との環状隙間に取り付けられる保持器付きころに関し、特に保持器からころが脱落することがないよう保持器自身がころをポケットに保持する保持器の構造に関する。 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.
　内外輪を備えていない保持器付きころとしては従来、例えば、特開２０００－７４０７１号公報（特許文献１）に記載のごとき技術が知られている。特許文献１に記載のケージアンドローラは、保持器の柱部をころ列のピッチ円からずらした位置にして、配置するころの数を多数にすることが可能になり、これにより、保持器付きころの負荷容量を大きくすることができた、というものである。 Conventionally, as a roller with a retainer that does not have inner and outer rings, for example, a technique as described in Japanese Patent Laid-Open No. 2000-74071 (Patent Document 1) is known. 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.
特開２０００－７４０７１号公報JP 2000-74071 A
　しかし、上記従来のようなケージアンドローラにあっては、以下に説明するような問題を生ずる。つまり、隣り合うころ同士の間に、ころ列のピッチ円よりも径方向外側に外側支柱が位置するとともに、径方向内側に内側支柱が位置し、互いに向き合う１対のリング部の内壁からこれら支柱が軸線方向に延びることから、これら外側支柱、内側支柱、および１対のリング部によって保持器の内部空間が閉じられてしまい、内部空間に潤滑油が流入し難いという問題があった。このため、外側支柱、内側支柱、および１対のリング部の間の内部空間に保持されるころの潤滑が不十分になってしまう。 However, 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.
　本発明は、上述の実情に鑑み、保持器の内部空間に潤滑油を円滑に供給することができる高負荷容量の保持器付きころを提供することを目的とする。 In view of the above circumstances, 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.
　この目的のため本発明による保持器付きころは、軸線方向に離隔した１対のリング部および周方向等間隔に複数配設されてリング部同士を連結する柱部を有する保持器と、周方向で隣り合う柱部間に形成されるポケット内に配置される複数のころとを備え、柱部は、ころのピッチ円よりも径方向外側に位置し、周方向で隣り合う柱部同士の間隔がころの直径よりも小さく、１対のリング部は、柱部と周方向に同じ位置かつ前記ころのピッチ円よりも径方向内側でリング部の内周縁から内径方向に突出し、ポケット内のころが径方向内側へ抜け出すことを規制する突出部材を有する。 For this purpose, a roller with a cage according to the present invention 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.
　かかる本発明によれば、柱部と周方向に同じ位置かつころのピッチ円よりも径方向内側でリング部の内周縁から内径方向に突出する突出部材を有することから、突出部材はリング部の内壁から軸線方向に延びておらず、周方向で隣り合う２個の突出部材の間でリング部の径方向寸法を相対的に小さくすることが可能になる。したがって、リング部の軸線方向外方から保持器の内部空間へ潤滑油を供給することができ、互いに向き合うリング部ところ端部との間へ潤滑油を送り込んで、ころの潤滑性能を向上させることができる。 According to the present invention, 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.
　好ましい実施形態として突出部材は、前記リング部の内周縁を含む仮想円から内径方向に離隔した位置でリング部から軸線方向内側に突出する。かかる実施形態によれば、潤滑油が突出部材の軸線方向内側に容易に廻り込むことが可能になり、次にリング部ところ端部との間へ流れ込むことができる。したがって、ころの潤滑性能が益々向上する。 As a preferred embodiment, 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.
　突出部材は１対のリング部間に架設された柱部のような形状であってもよいが、好ましい実施形態として、１対のリング部からそれぞれ軸線方向に延び、互いに接続されない突起であってもよい。 The projecting member may have a shape like a pillar portion laid between a pair of ring portions. However, as a preferred embodiment, 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.
　また突出部材は、ころの転動面と当接して、ころが径方向内側へ抜け出すことを規制するものであってもよいが、好ましくは、ころは、ころ両端面ところ転動面との境界に面取り部を有し、突出部材は、１対のリング部からそれぞれ軸線方向内側に突出して先端同士が近づくよう互いに向き合う１対の軸線方向突起を含み、これら軸線方向突起がころ両端の面取り部とそれぞれ当接する。かかる実施形態によれば、突出部材に相当する１対の突起がころ両端の面取り部と当接することから、１対の突起同士をころ転動面の長さ（ころ有効長）と略同じ間隔で離隔させることが可能なる。したがって、保持器の径方向内側から保持器の内部空間へ潤滑油を容易に供給することができ、ころの潤滑性能を向上させることができる。 Further, the protruding member may abut against the rolling surface of the roller and restrict the roller from coming out radially inward. Preferably, 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. According to this embodiment, since 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.
　好ましい実施形態として軸線方向突起のうち径方向外側の表面は、軸線方向内側に向かうにつれてころのピッチ円から遠ざかるよう傾斜したテーパ面である。かかる実施形態によれば、潤滑油が突出部材の軸線方向内側へ廻り込んで軸線方向突起まで流入することができ、ころの潤滑性能を向上させることができる。 As a preferred embodiment, 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.
　好ましい実施形態として、軸線方向突起は、軸線方向先端側に向かうにつれて周方向寸法が徐々に小さくなる形状を有する。また軸線方向突起は、軸線と直角な断面において径方向内側に向かうにつれて周方向寸法が徐々に大きくなる断面形状を有する。かかる実施形態によれば、ころの面取り部と当接する軸線方向突起の形状が好適になり、ころが内径方向へ脱落することを好適に防止することができる。 As a preferred embodiment, the axial projection has a shape in which the circumferential dimension gradually decreases toward the distal end side in the axial direction. In addition, 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. According to this embodiment, 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.
　ここで好ましくは、突出部材のうちリング部内周縁との接続箇所は、軸線と直角な断面において径方向外側に向かうにつれて周方向寸法が徐々に大きくなる断面形状を有する。かかる実施形態によれば、突出部材のうちリング部内周縁との接続箇所に応力が集中することを緩和することが可能になり、保持器の耐久性能を向上させることができる。 Here, preferably, 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. According to this embodiment, it becomes possible to relieve | stress concentrate on a connection location with a ring part inner periphery of a protrusion member, and can improve the durable performance of a holder | retainer.
　本発明は一実施形態に限定されるものではなく、突出部材を１本ずつリング部に植設してもよいが、好ましくは、周方向に複数配置される突出部材のうち隣り合う少なくとも２個の突出部材は、周方向に延びる連結部材で連結される。かかる実施形態によれば、複数の突出部材をリング部へ同時に取り付けることが可能になり、本発明に係る保持器付きころの製造時における組み立て効率が向上する。 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.
　本発明は一実施形態に限定されるものではないが、好ましくは、ころの端面と向き合うリング部の内壁には、軸線方向に窪んだ切り欠き部が形成され、連結部材は切り欠き部と嵌合してもよい。かかる実施形態によれば、連結部材をリング部に強固に固定することができる。 Although the present invention is not limited to one embodiment, preferably, 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.
　また本発明は一実施形態に限定されるものではなく、連結部材は周方向に３６０度未満の角度で延びてもよいが、全周３６０度に亘って延びてもよい。つまり、連結部材は無端の環状であってリング部の全周に亘って延在するものであってもよい。この場合、連結部材をたわませてリングの径方向内側から取り付けることが可能であり、保持器付ころの組み立てが容易になる。この場合において好ましくは、突出部材および連結部材は樹脂製である。これにより射出成形によって突出部材を容易に製造することができる。 The present invention is not limited to one embodiment, and 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. In this case, preferably, the protruding member and the connecting member are made of resin. Thereby, a protrusion member can be easily manufactured by injection molding.
　あるいは周方向に３５０度前後の角度で延びる連結部材として、連結部材は例えばＣ字状であって周方向一方端と他方端とが周方向に開いた隙間を伴って対向してもよい。この場合、連結部材を縮径させてリング部の径方向内側から取り付けることが可能になり、保持器付きころの組立が容易になる。この場合において好ましくは、突出部材および連結部材は樹脂製である。これにより射出成形によって突出部材を容易に製造することができる。 Alternatively, as a connecting member extending in the circumferential direction at an angle of about 350 degrees, 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. In this case, it is possible to reduce the diameter of the connecting member and attach it from the inside in the radial direction of the ring portion, and the assembly of the roller with cage becomes easy. In this case, preferably, the protruding member and the connecting member are made of resin. Thereby, a protrusion member can be easily manufactured by injection molding.
　あるいは周方向に１８０度以下の角度で延びる連結部材として、連結部材は複数個の円弧形状セグメントから構成され、複数個の円弧形状セグメントは、リング部の全周に沿って取り付けられて、無端の環状体を形成してもよい。連結部材は、２個でも３個でも４個以上でもよい。例えば２個の場合、連結部材は１８０度の円弧形状であり、かかる１８０度の連結部材を２個合わせて無端の環状にしリング部へ取り付ける。この場合、連結部材をリング部の径方向内側から取り付けることが可能になり、保持器付きころの組み立てが容易になる。この場合において好ましくは、突出部材および連結部材は金属製もしくは樹脂製であるが、好ましくは金属製である。金属製の場合、突出部材の強度を向上させることができる。 Alternatively, as a connecting member extending at an angle of 180 degrees or less in the circumferential direction, 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. For example, in the case of two, 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. In this case, it becomes possible to attach the connecting member from the inner side in the radial direction of the ring portion, and the assembly of the roller with cage becomes easy. In this case, 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.
　保持器のポケットがころを収容する間、保持器のリング部はころの端面と向き合う。そこで好ましい実施形態として、リング部に取り付けられてころの端面と向き合う連結部材の内壁は、ころの端面と向き合うポケットの壁面よりも、軸線方向へ後退している。かかる実施形態によれば、連結部材の内壁が、ポケットの壁面よりも軸線方向へ後退していることから、ころが連結部材の内壁に当接することを回避することができる。 ¡While the cage pocket accommodates the roller, 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.
　このように本発明は、ポケット内のころが径方向内側へ抜け出すことを規制する突出部材が、リング部の内周縁から内径方向に突出することから、保持器に保持されたころの端面が軸線方向視においてリング部の内周縁よりも径方向内側に表れる。したがって、リング部の外方から保持器の内部空間へ軸線方向に潤滑油を容易に供給することができ、ころの潤滑性能を向上させることができる。したがって、耐久性能に優れた高負荷容量の保持器付きころを実現することができる。 Thus, in the present invention, since the protruding member that restricts the roller in the pocket from coming out radially inward protrudes in the inner diameter direction from the inner peripheral edge of the ring portion, 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.
本発明の１実施例になる保持器付きころを示す横断面図および正面図である。It is the cross-sectional view and front view which show the roller with a retainer which becomes one Example of this invention. 同実施例を図１のII－IIで断面とし、一部省略して示す縦断面図である。FIG. 2 is a longitudinal sectional view showing the same embodiment taken along a line II-II in FIG. 図２のIII部分を拡大し連結部材のみを取り出して示す断面図である。FIG. 3 is a cross-sectional view showing a portion III in FIG. 2 enlarged and taking out only a connecting member. 連結部材を取り出し軸線方向内側からみた状態を示す全体図である。It is a general view which shows the state which looked at the connection member from the taking-out axial direction inner side. 図４の連結部材を軸線方向外側からみた状態を示す正面図である。It is a front view which shows the state which looked at the connection member of FIG. 4 from the axial direction outer side. 図４の矢印VIからみた状態を拡大して示す説明図である。It is explanatory drawing which expands and shows the state seen from the arrow VI of FIG. ころが軸線方向一方に一時的に寄った場合における各部材の寸法関係を示す説明図である。It is explanatory drawing which shows the dimensional relationship of each member when a roller temporarily approaches to the axial direction one side. 連結部材の変形実施例を示す全体図である。It is a general view which shows the deformation | transformation Example of a connection member. 連結部材の変形実施例を示す全体図である。It is a general view which shows the deformation | transformation Example of a connection member. 連結部材の変形実施例を示す正面図である。It is a front view which shows the modification Example of a connection member. 連結部材の変形実施例を示す正面図である。It is a front view which shows the modification Example of a connection member.
　以下、本発明の実施の形態を、図面に示す実施例に基づき詳細に説明する。 Hereinafter, embodiments of the present invention will be described in detail based on examples shown in the drawings.
　図１は、本実施例になる保持器付きころを示し、上半分が横断面図であって、下半分が正面図である。また図２は、同実施例の縦断面図であり、ころ等を数箇所で省略して示す。また図３は、図２のIII部分を拡大し連結部材のみを取り出して示す断面図である。 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.
　本実施例の保持器付きころは、ころ１１および保持器１２を備え、一般的な遊星歯車組の軸受として用いられる。ころ１１は、例えば針状ころなど円柱形状を基本とし、ころ両端面ところ転動面との境界に面取り部１３を有する。面取り部１３の面取りは公知のものでよく、環状に形成される。あるいは図には示さなかったが、ころ１１の両端部は球面状に膨出した形状であってもよく、この場合にも、ころ両端面ところ転動面との境界に面取り部を有すると理解されたい。本実施例では面取り部１３の位置を容易に見分けることができるように、面取り部１３と転動面１１ｔとの区分を図２に一点鎖線で示している。 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. Alternatively, although not shown in the drawing, 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. In this embodiment, 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.
　保持器１２は、軸線方向に離隔した１対のリング部１４，１４、および軸線方向に延びてこれらリング部１４，１４間を連結する柱部１５を有する。柱部１５は周方向等間隔に複数配設され、周方向で隣り合う２本の柱部１５，１５間にポケット２１を形成する。リング部１４は平坦な円盤状かつ環状であって、その外周端が直角に屈曲して柱部１５と一体に結合する。リング部１４および柱部１５は、削り出し加工またはプレス加工によって形成され、金属製である。また、削り出し加工または射出成形による樹脂製でも良い。 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.
　柱部１５は保持器１２の中心軸線Ｏを中心として周方向等間隔に複数配設される。ころ１１は周方向で隣り合う柱部１５，１５同士の間に配置される。柱部１５は、ころ１１のピッチ円ＰＣＤよりも径方向外側に位置し、周方向で隣り合う柱部１５，１５同士の間隔がころ１１の直径よりも小さい。このため柱部１５は、ポケット２１内のころ１１が保持器１２から外径方向へ脱落することを防止する。 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.
　１対のリング部１４は、柱部１５と周方向に同じ位置かつピッチ円ＰＣＤよりも径方向内側でリング部１４の内周縁１４ｉから内径方向に突出する突出部材１６を有する。周方向で隣り合う２個の突出部材１６，１６の間隔は、ころ１１の直径よりも小さく、さらには面取り部１３の直径よりも小さく、突出部材１６は、ころ１１と当接し、ポケット２１内のころ１１が保持器１２から径方向内側へ抜け出すことを規制する。 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.
　この点につき詳細に説明すると、突出部材１６の先端部は、１対のリング部１４，１４からそれぞれ軸線Ｏ方向内側に突出して先端同士が近づくよう互いに向き合う１対の軸線方向突起１７を含む。軸線方向突起１７は、ころ１１両端の面取り部１３と当接する。かくして、ころ１１の面取り部１３は、周方向で隣り合う２個の軸線方向突起１７によって、保持器１２から径方向内側へ抜け出すことを規制される。 Describing this point in detail, 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. Thus, 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.
　図１に示すように、軸線Ｏ方向視において突出部材１６は、等脚台形のごとき形状を呈する。つまり突出部材１６は、軸線Ｏと直角な断面において径方向内側に向かうにつれて周方向寸法が徐々に大きくなる断面形状を有するのである。かかる断面形状は、軸線Ｏ方向視において円形のころ１１を、ころピッチ円ＰＣＤよりも径方向内側から保持するのに好適な形状となる。 As shown in FIG. 1, 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.
　突出部材１６はリング部内周縁１４ｉから内径方向に突出することから、隣り合う突出部材１６同士の間で、リング部１４の径方向寸法αを従来の保持器付きころよりも小さくすることができる。したがって、保持器１２の軸線Ｏ方向外方から軸線Ｏ方向内方へ向かう潤滑油の流れを確保することが可能となり、互いに対向するリング部内壁１４ｆところ１１端部との間へ潤滑油を容易に供給することができる。 Since the protruding member 16 protrudes in the inner diameter direction from the inner peripheral edge 14i of the ring portion, the radial dimension α 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.
　図３は、図２にIIIで示す領域を拡大して示し、突出部材１６の形状を説明するための図である。図３に示すように、軸線方向突起１７のうち径方向外側の表面１７ｔは、軸線方向内側、つまり先端側、に向かうにつれてころ１１のピッチ円ＰＣＤから遠ざかるよう傾斜したテーパ面である。かかる形状により、突出部材１６はリング部内周縁１４ｉを含む仮想円から内径方向に離隔することから、突出部材１６の軸線Ｏ方向内側に廻り込んだ潤滑油が保持器１２内部空間へ流れ込むことができる。 FIG. 3 is an enlarged view of the region indicated by III in FIG. 2 for explaining the shape of the protruding member 16. As shown in FIG. 3, 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. With this shape, 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. .
　また軸線方向突起１７は、図３に示すように軸線Ｏ方向先端側に向かうにつれて径方向寸法が徐々に小さくなる形状を有する。かかる形状は、転動面１１ｔに近づくにつれて直径が大きくなる一方でリング部１４に近づくにつれて直径が小さくなる面取り部１３と当接するために好適な形状となる。 Further, as shown in FIG. 3, 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.
　図４～図６は、突出部材１６同士を周方向に連結する連結部材１８を取り出して示す図である。すなわち、図４は、連結部材１８を取り出し軸線Ｏ方向内側からみた状態を示す全体図であり、図１の上半分に対応する。図５は、連結部材１８を軸線方向外側からみた状態を示す正面図であり、図４および図５は表裏の関係になる。図６は、連結部材１８を図４の矢印VIの方向にみた状態を拡大して示す説明図である。 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, and 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.
　周方向に複数配置される突出部材１６，１６，・・・のうち隣り合う少なくとも２個の突出部材１６，１６は、周方向に延びる連結部材１８で連結される。連結部材１８は樹脂製の円環状であり、軸線方向厚みよりも径方向寸法が大きな帯状である。そして連結部材１８は、連結部材１８の内周縁から突出部材１６が径方向内側に突出するよう、樹脂製の突出部材１６と一体形成される。 Of the plurality of projecting members 16, 16,... Arranged in the circumferential direction, at least two adjacent projecting members 16, 16 are connected by a connecting member 18 extending in the circumferential direction. 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.
　連結部材１８の表裏面１８ｆ，１８ｔのうち、軸線方向突起１７が突出する側の表面１８ｆは、リング部１４に取り付け固定された状態で、ころ１１の端面と対向する。これに対し、軸線方向突起１７が突出しない側の裏面１８ｔは、リング部１４と密着固定される。 Of the front and back surfaces 18f and 18t 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. On the other hand, the back surface 18t on the side where the axial projection 17 does not protrude is closely fixed to the ring portion 14.
　リング部１４の内壁には、軸線Ｏ方向に窪んだ段差１９（図２）が全周に形成され、内周縁を含むリング部１４の内径部分は、連結部材１８を収容するための切り欠き部を有する。かかる切り欠き部は、軸線Ｏ方向に窪み、ころ１１の端面と向き合うリング部１４の内壁に沿って形成される。切り欠き部は、リング部１４の内周縁に沿って、周方向に連続して延びる。切り欠き部における壁面１４ｂは外径側における内壁１４ｆよりも窪んでいることから、リング部１４の内周縁の厚みは外周縁の厚みよりも薄い。連結部材１８は、壁面１４ｂに固定されて切り欠き部と嵌合する。ここで切り欠き部の軸線Ｏ方向深さは連結部材１８の軸線Ｏ方向厚みと略同一であるのが望ましい。 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. Have 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. Here, 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.
　連結部材１８の内周縁の直径は、リング部１４の内周縁の直径と同じ、あるいは大きく形成される。これにより、連結部材１８をリング部１４に取り付け固定し、連結部材１８が上述した切り欠き部と嵌合した状態で、連結部材の裏面１８ｔ全体がリング部１４と密着して連結部材１８がリング部１４の内周縁よりも径方向内側に現れることがない。また連結部材の表面１８ｆはリング部１４の内壁と同一平面になる。あるいは、リング部１４の内壁１４ｆよりも軸線Ｏ方向に窪んで位置する。あるいは、後述する図７に示すように、内壁１４ｆよりも軸線Ｏ方向に突出し、かつ、ポケット部２１の壁面２１ｆよりも軸線Ｏ方向へ後退している。 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. As a result, 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. Further, 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.
　なお、一方のリング部１４に固定される連結部材１８を、他方のリング部１４に固定される連結部材１８とは異なる色彩で着色してもよい。これにより、ころ１１の公差などの軸受の識別を容易に視認することができる。 Note that the 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.
　図６に示すように、軸線方向突起１７は、軸線Ｏ方向先端側に向かうにつれて周方向寸法が徐々に小さくなる形状を有する。つまり軸線方向突起１７は、先細り形状を有する。かかる形状は、転動面１１ｔに近づくにつれて直径が大きくなる一方でリング部１４に近づくにつれて直径が小さくなる面取り部１３と当接するために好適な形状となる。 As shown in FIG. 6, 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.
　なお、図４および図５に示す連結部材１８は、無端の環状であってリング部１４の全周に亘って延在する。 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.
　図７は、ころ１１および保持器１２の寸法関係を示す縦断面図である。１対のリング部１４および隣り合う２本の柱部１５に四方を区画された保持器１２のポケット２１は、ころ１１を収容する。ころ１１は軸線方向長さＬｋにおいて公差を有し、保持器１２がころ１１を回転自由に収容するために、ポケット２１の軸線方向寸法Ｌｄはころ１１の軸線方向長さＬｋよりも大きく、ころ１１の両端とリング部１４との間には隙間が生じる。これによりころ１１は、１対のリング部１４，１４間を軸線方向に自由に動くことができる。 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.
　図７に示すようにころ１１が一時的にリング部１４の一方まで最も寄ったとき、ころ１１とリング部１４の他方との隙間幅が最大幅Ｌ１となる（Ｌ１＝Ｌｄ－Ｌｋ）。かかる一時的な状態においても、他方の軸線方向突起１７はころ１１の面取り部１３の他方と当接してころ１１を１対のリング部１４間に保持する。そうすると、リング部間距離Ｌｄところ軸線方向長さＬｋの差が大きく、かつ面取り部１３の軸線方向長さＬ２が小さい場合には、図７左側に示すように、一方の軸線方向突起１７の先端が、面取り部１３を超えて一時的にころ転動面１１ｔに達することがある。 As shown in FIG. 7, when the roller 11 is temporarily closest to one of the ring portions 14, the gap width between the roller 11 and the other of the ring portions 14 becomes the maximum width L1 (L1 = Ld−Lk). Even in such a temporary state, the other axial projection 17 contacts the other of the chamfered portions 13 of the rollers 11 to hold the rollers 11 between the pair of ring portions 14. Then, when the difference between the axial lengths Lk is large at the distance Ld between the ring portions and the axial length L2 of the chamfered portion 13 is small, as shown on the left side of FIG. However, the roller rolling surface 11t may be temporarily reached beyond the chamfered portion 13.
　本発明の請求項に記載された、これら軸線方向突起がころ両端の面取り部とそれぞれ当接するとは、ころ１１がポケット２１の軸線方向中央部に位置する標準的な状態を指すのであり、上述した一時的な状態を含むものではない。ころ１１が軸線方向一方に寄った時に一方の突起部材の先端がころ転動面と一時的な当接する実施例であっても、標準的な状態において１対の軸線方向突起１７の先端がころ１１の両端の面取り部１３と当接してころ１１を１対のリング部１４間に保持するのであれば、本発明の請求項に含まれると理解されたい。 In the claims of the present invention, 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.
　ここで付言すると、リング部１４に取り付けられてころ１１の端面と向き合う内壁に相当する連結部材１８の表面１８ｆは、ころ１１の端面と向き合うポケット２１の壁面２１ｆよりも、軸線方向へ後退している。かかる本実施例によれば、ころ１１が図７左側に寄った場合であっても、ポケット壁面２１ｆがころ１１を受け止めることから、ころ１１が連結部材１８に当接することを回避できる。したがって、連結部材１８の負担を少なくして、保持器１２の耐久性能を向上させることができる。 In other words, 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. According to this embodiment, even when the roller 11 is moved to the left side in FIG. 7, 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.
　周方向に複数配置される突出部材１６は、円弧形状の連結部材１８で根元同士が連結される。連結部材１８は、軸線Ｏを中心として周方向に延び、その径方向高さがその軸線Ｏ方向厚みよりも大きいことから、径方向外力に対する剛性が大きく、平坦な薄板材からなるリング部１４の一部あるいは全周を構成する。連結部材１８および突出部材１６は一体に結合するが、リング部１４とは別体に形成される。 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.
　本実施例の連結部材１８は図４に示すように無端の環状であってリング部１４の全周に亘って延在する。これにより、複数の突出部材１６すべてをリング部１４に同時に取り付けることができ、組み立て効率が良い。 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.
　あるいは連結部材１８は、図８に示す変形実施例のようにＣ字状であって周方向一方端と他方端とが周方向に開いた隙間２２を伴って対向してもよい。図８に示す連結部材２８は連結部材１８と略同じであって表面２８ｆがころ端部と対向するが、周方向に３４０～３５０度の範囲で延在する点で異なる。隙間２２の隙間幅は、隣り合う突出部材１６，１６同士の距離よりも小さい。図８に示す形状であれば、保持器付きころの製造工程で連結部材２８を縮径させてリング部１４の径方向内側から取り付けることが可能になり、保持器付きころの組立が容易になる。この場合において好ましくは、突出部材１６および連結部材２８は樹脂製である。これにより射出成形によって突出部材１６を容易に製造することができる。 Alternatively, 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. . In this case, 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.
　あるいは連結部材１８は、図９に示すように１８０度の円弧形状セグメント３８であって、２個で３６０°の環状体を構成するものであってもよい。かかる円弧形状セグメント３８の連結部材を２個合わせて無端の環状にしリング部１４の全周に沿って取り付ける。 Alternatively, 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.
　表面３８ｆはころ端部と対向する。突出部材１６および円弧形状セグメント３８は、削り出し加工または射出成形による樹脂製であってもよいが、図９の場合において好ましくは、突出部材１６および連結部材になる円弧形状セグメント３８は金属製である。これにより突出部材１６の強度を向上させることができる。 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 | strength of the protrusion member 16 can be improved.
　上述した図４、図８、および図９に示す実施例では、リング部１４に突出部材１６を取り付けた後、ころ１１を径方向内側から嵌め込み、保持器付きころが完成する。なお、リング部１４および突出部材１６は弾性変形するため、嵌め込みが可能になる。 In the embodiment shown in FIG. 4, FIG. 8, and FIG. 9 described above, after attaching the protruding member 16 to the ring portion 14, the roller 11 is fitted from the radially inner side to complete the roller with cage. Since the ring portion 14 and the protruding member 16 are elastically deformed, they can be fitted.
　次に本発明の変形実施例を説明する。図１０は本発明の変形実施例を示す正面図であり、軸線Ｏ方向外方から視た状態を示す。この変形実施例につき、上述した実施例と共通する構成については同一の符号を付して説明を省略し、異なる構成について以下に説明する。この変形実施例では、連結部材１８の内周縁２３が、周方向で隣り合う突出部材１６同士を曲線で滑らかに結ぶ。かかる内周縁２３の曲線は、軸受の外径方向に向かって窪んだ円弧であり、連結部材１８自身が延びている円周の直径よりも小さな直径である。かかる変形実施例によれば、連結部材１８の剛性を大きくすることができる。 Next, a modified embodiment of the present invention will be described. 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. In this modified embodiment, 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. In this modified embodiment, 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.
　次に本発明の変形実施例を説明する。図１１は本発明の変形実施例を示す正面図であり、軸線Ｏ方向外方から視た状態を示す。この変形実施例につき、上述した実施例と共通する構成については同一の符号を付して説明を省略し、異なる構成について以下に説明する。この変形実施例では、連結部材１８の内周縁２４と接続する突出部材１６の周方向両端１６ｄを、図５に示す突出部材１６と対比して逆ハの字形状としたものである。すなわち、図５に示す突出部材１６における連結部材１８との接続箇所は、径方向内側から径方向外側に向かって周方向幅が狭くなるハの字形状を有するが、図１１に示す突出部材１６における連結部材１８との接続箇所は、径方向内側から径方向外側に向かって周方向幅が広くなる逆ハの字形状を有する。このため、突出部材１６の周方向両端１６ｄと連結部材の内周縁２４との交差角度が９０度よりも大きくなり、隅が目立たなくなる。したがって、突出部材１６と連結部材１８との接続箇所において、応力の集中を緩和することが可能になり、保持器１２の耐久性能を向上させることができる。 Next, a modified embodiment of the present invention will be described. 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. In this modified embodiment, 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. In this modified embodiment, 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. 5 with the connecting member 18 has a square shape whose circumferential width becomes narrower from the radially inner side toward the radially outer side, but the projecting member 16 shown in FIG. The 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.
　図１０および図１１に示す変形実施例によれば、突出部材１６のうちリング部内周縁１４ｉとの接続箇所が、軸線Ｏと直角な断面において径方向外側に向かうにつれて周方向寸法が徐々に大きくなる断面形状を有することから、かかる接続箇所に応力が集中することを緩和することが可能になり、保持器１２の耐久性能を向上させることができる。なお、図１０および図１１に示す変形実施例には図示しなかったが、連結部材１８から軸線Ｏ方向内側へ突出する軸線方向突起１７が、前述した図３および図６に示す形状であること勿論である。 10 and 11, 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. Although not shown in the modified embodiment shown in FIGS. 10 and 11, 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.
　以上、図面を参照してこの発明の実施の形態を説明したが、この発明は、図示した実施の形態のものに限定されない。図示した実施の形態に対して、この発明と同一の範囲内において、あるいは均等の範囲内において、種々の修正や変形を加えることが可能である。 The embodiment of the present invention has been described above with reference to the drawings, but the present invention is not limited to the illustrated embodiment. Various modifications and variations can be made to the illustrated embodiment within the same range or equivalent range as the present invention.
　この発明になる保持器付きころは、遊星歯車減速装置における遊星歯車の中央孔とクランク軸の外周との環状隙間に設置されて遊星歯車を回転自在に支持する等、転がり軸受に利用される。 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.
　１１　ころ、１２　保持器、１３　面取り部、１４　リング部、１４ｉ　リング部内周縁、１５　柱部、１６　突出部材、１７　軸線方向突起、１８　連結部材、１９　段差、２１　ポケット、２２　隙間　２３，２４　連結部材内周縁。 11 Roller, 12 Cage, 13 Chamfered part, 14 Ring part, 14i Ring inner peripheral edge, 15 Pillar part, 16 Protruding member, 17 Axial projection, 18 Connecting member, 19 Step, 21 Pocket, 22 Gap 23, 24 Connecting member Inner rim.

Claims (15)

  1. 　軸線方向に離隔した１対のリング部および周方向等間隔に複数配設されて前記リング部同士を連結する柱部を有する保持器と、周方向で隣り合う前記柱部間に形成されるポケット内に配置される複数のころとを備え、
    　前記柱部は、前記ころのピッチ円よりも径方向外側に位置し、周方向で隣り合う柱部同士の間隔が前記ころの直径よりも小さく、
    　前記１対のリング部は、前記柱部と周方向に同じ位置かつ前記ころのピッチ円よりも径方向内側でリング部の内周縁から内径方向に突出し、前記ポケット内のころが径方向内側へ抜け出すことを規制する突出部材を有する、保持器付きころ。     A pair of ring portions spaced apart in the axial direction and a plurality of cages arranged at equal intervals in the circumferential direction and having column portions connecting the ring portions, and pockets formed between the column portions adjacent in the circumferential direction With a plurality of rollers arranged inside,
    The column portion is located radially outside the pitch circle of the roller, and the interval between the column portions adjacent in the circumferential direction is smaller than the diameter of the roller,
    The pair of ring portions protrude 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 from the pitch circle of the rollers, and the rollers in the pockets radially inward A roller with a retainer, which has a protruding member that restricts coming out.
  2. 　前記突出部材は、前記リング部の内周縁を含む仮想円から内径方向に離隔した位置でリング部から軸線方向内側に突出する、請求項１に記載の保持器付きころ。 The roller with a cage according to claim 1, wherein the protruding member protrudes inward in the axial direction from the ring portion at a position spaced in the inner diameter direction from a virtual circle including an inner peripheral edge of the ring portion.
  3. 　前記ころは、ころ両端面ところ転動面との境界に面取り部を有し、
    　前記突出部材は、前記１対のリング部からそれぞれ軸線方向内側に突出して先端同士が近づくよう互いに向き合う１対の軸線方向突起を含み、これら軸線方向突起がころ両端の前記面取り部とそれぞれ当接する、請求項２に記載の保持器付きころ。     The roller has a chamfered portion at the boundary between the roller both ends and the rolling surface,
    The projecting member includes a pair of axial projections that project 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 abut against the chamfered portions at both ends of the roller, respectively. The roller with a cage according to claim 2.
  4. 　前記軸線方向突起のうち径方向外側の表面は、軸線方向内側に向かうにつれて前記ころのピッチ円から遠ざかるよう傾斜したテーパ面である、請求項３に記載の保持器付きころ。 The roller with a retainer according to claim 3, wherein a radially outer surface of the axial protrusion is a tapered surface that is inclined away from a pitch circle of the roller toward an inner side in the axial direction.
  5. 　前記軸線方向突起は、軸線方向先端側に向かうにつれて周方向寸法が徐々に小さくなる形状を有する、請求項３に記載の保持器付きころ。 The roller with a retainer according to claim 3, wherein the protrusion in the axial direction has a shape in which a circumferential dimension gradually decreases toward the tip end in the axial direction.
  6. 　前記軸線方向突起は、軸線と直角な断面において径方向内側に向かうにつれて周方向寸法が徐々に大きくなる断面形状を有する、請求項３に記載の保持器付きころ。 The roller with a cage according to claim 3, wherein the axial protrusion has a cross-sectional shape in which a circumferential dimension gradually increases toward a radially inner side in a cross section perpendicular to the axial line.
  7. 　前記突出部材のうちリング部内周縁との接続箇所は、軸線と直角な断面において径方向外側に向かうにつれて周方向寸法が徐々に大きくなる断面形状を有する、請求項６に記載の保持器付きころ。 The roller with a cage according to claim 6, wherein a connecting portion of the projecting member with the inner peripheral edge of the ring portion has a cross-sectional shape in which a circumferential dimension gradually increases toward a radially outer side in a cross section perpendicular to the axis.
  8. 　周方向に複数配置される前記突出部材のうち隣り合う少なくとも２個の前記突出部材は、周方向に延びる連結部材で連結される、請求項１に記載の保持器付きころ。 The roller with a retainer according to claim 1, wherein at least two adjacent projecting members among the projecting members arranged in the circumferential direction are coupled by a coupling member extending in the circumferential direction.
  9. 　前記連結部材は無端の環状であって前記リング部の全周に亘って延在する、請求項８に記載の保持器付きころ。 The roller with a retainer according to claim 8, wherein the connecting member has an endless annular shape and extends over the entire circumference of the ring portion.
  10. 　前記連結部材はＣ字状であって周方向一方端と他方端とが周方向に開いた隙間を伴って対向する、請求項８に記載の保持器付きころ。 The roller with a retainer according to claim 8, wherein the connecting member is C-shaped and has one end in the circumferential direction and the other end facing each other with a gap opened in the circumferential direction.
  11. 　前記突出部材および前記連結部材は樹脂製である、請求項９に記載の保持器付きころ。 The roller with a retainer according to claim 9, wherein the protruding member and the connecting member are made of resin.
  12. 　前記連結部材は複数個の円弧形状セグメントから構成され、前記複数個の円弧形状セグメントは、前記リング部の全周に沿って取り付けられて、無端の環状体を形成する、請求項８に記載の保持器付きころ。 9. The connection member according to claim 8, wherein the connecting member includes a plurality of arc-shaped segments, and the plurality of arc-shaped segments are attached along the entire circumference of the ring portion to form an endless annular body. Roller with cage.
  13. 　前記突出部材および前記連結部材は金属製である、請求項１２に記載の保持器付きころ。 The roller with a cage according to claim 12, wherein the protruding member and the connecting member are made of metal.
  14. 　前記ころの端面と向き合う前記リング部の内壁には、軸線方向に窪んだ切り欠き部が形成され、
    　前記連結部材は前記切り欠き部と嵌合する、請求項８に記載の保持器付きころ。     On the inner wall of the ring portion facing the end face of the roller, a notch portion recessed in the axial direction is formed,
    The roller with a retainer according to claim 8, wherein the connecting member is fitted to the notch.
  15. 　前記リング部に取り付けられて前記ころの端面と向き合う前記連結部材の内壁は、前記ころの端面と向き合う前記ポケットの壁面よりも、軸線方向へ後退している、請求項１４に記載の保持器付きころ。 15. The retainer according to claim 14, wherein an inner wall of the coupling member attached to the ring portion and facing the end surface of the roller is set back in an axial direction from a wall surface of the pocket facing the end surface of the roller. Time.
PCT/JP2010/058296 2009-06-16 2010-05-17 Retainer-equipped rollers WO2010146955A1 (en)

Applications Claiming Priority (2)

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JP2009143589A JP5329313B2 (en) 2009-06-16 2009-06-16 Roller with cage
JP2009-143589 2009-06-16

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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 (en) * 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 Cage with two-material window for rolling bearing, particularly, roller bearing
JP2000074071A (en) * 1998-08-28 2000-03-07 Nippon Seiko Kk Cage and roller

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 (en) * 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 Cage with two-material window for rolling bearing, particularly, roller bearing
JP2000074071A (en) * 1998-08-28 2000-03-07 Nippon Seiko Kk Cage and roller

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JP5329313B2 (en) 2013-10-30

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