WO2013042512A1 - レース付スラストころ軸受 - Google Patents
レース付スラストころ軸受 Download PDFInfo
- Publication number
- WO2013042512A1 WO2013042512A1 PCT/JP2012/071672 JP2012071672W WO2013042512A1 WO 2013042512 A1 WO2013042512 A1 WO 2013042512A1 JP 2012071672 W JP2012071672 W JP 2012071672W WO 2013042512 A1 WO2013042512 A1 WO 2013042512A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- diameter side
- outer diameter
- thrust
- cage
- side flange
- Prior art date
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/58—Raceways; Race rings
-
- 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
- F16C33/58—Raceways; Race rings
- F16C33/60—Raceways; Race rings divided or split, e.g. comprising two juxtaposed rings
- F16C33/605—Raceways; Race rings divided or split, e.g. comprising two juxtaposed rings with a separate retaining member, e.g. flange, shoulder, guide ring, secured to a race ring, adjacent to the race surface, so as to abut the end of the rolling elements, e.g. rollers, or the cage
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
- F16C19/30—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for axial load mainly
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/46—Cages for rollers or needles
-
- 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
- F16C33/4605—Details of interaction of cage and race, e.g. retention or centring
-
- 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
- F16C33/4617—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages
- F16C33/4641—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages comprising two annular parts joined together
-
- 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
- F16C33/54—Cages for rollers or needles made from wire, strips, or sheet metal
- F16C33/542—Cages for rollers or needles made from wire, strips, or sheet metal made from sheet metal
- F16C33/547—Cages for rollers or needles made from wire, strips, or sheet metal made from sheet metal from two parts, e.g. two discs or rings joined together
-
- 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
- F16C33/58—Raceways; Race rings
- F16C33/588—Races of sheet metal
-
- 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
- F16C43/00—Assembling bearings
- F16C43/04—Assembling rolling-contact bearings
-
- 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
- F16C2240/00—Specified values or numerical ranges of parameters; Relations between them
- F16C2240/40—Linear dimensions, e.g. length, radius, thickness, gap
- F16C2240/46—Gap sizes or clearances
-
- 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
- F16C2240/00—Specified values or numerical ranges of parameters; Relations between them
- F16C2240/40—Linear dimensions, e.g. length, radius, thickness, gap
- F16C2240/70—Diameters; Radii
Definitions
- the present invention relates to a thrust roller bearing with a race (including a thrust needle bearing) that is assembled to a rotating support portion in order to support a thrust load applied to the rotating support portion in various rotating machines such as an automobile transmission.
- a thrust roller bearing as described in Japanese Patent Application Laid-Open No. 2005-164023 is attached to a rotation support portion in various rotating machines such as an automobile transmission, and a rotating member such as a rotating shaft and a stationary member such as a casing are provided.
- the rotating member is allowed to rotate while supporting the thrust load applied between the two.
- a pair of members that rotate relative to each other through such a thrust roller bearing is a material that is difficult to ensure the required hardness, or it is difficult or troublesome to process the required smooth surface.
- a thrust roller bearing with a race in which one cage and a plurality of rollers and two races are combined is used.
- FIG. 7 shows an example of a thrust roller bearing 1 with a race that has been widely known.
- the thrust roller bearing with race 1 includes a plurality of rollers 2 arranged in a radial direction, a cage 3 that holds these rollers 2, and these rollers 2 from both sides in the axial direction of the cage 3.
- the first thrust trace 4 and the second thrust trace 5 are configured.
- the cage 3 is entirely formed in an annular shape, and the same number of pockets 6 as the rollers 2 are provided radially at equal intervals in the circumferential direction.
- the first thrust trace 4 and the second thrust trace 5 are each made by stamping and bending a hard metal plate having sufficient hardness, such as bearing steel or case-hardened steel.
- the first thrust trace 4 called an outer ring includes a flat and annular first thrust trace portion 7 and a cylinder provided in a state bent from the outer peripheral edge of the first thrust trace portion 7 to one side in the axial direction.
- the outer diameter side flange 8 is provided.
- an outer diameter side locking portion 9 that is bent inward in the radial direction is provided at the distal end edge of the outer diameter side flange 8.
- the second thrust trace 5 generally called an inner ring is provided in a state in which the second thrust trace portion 10 is flat and annular and is bent from the inner peripheral edge of the second thrust trace portion 10 to one axial side.
- a cylindrical inner flange 11 having a cylindrical shape.
- an inner diameter side locking portion 12 that is bent outward in the radial direction is provided at the tip edge of the inner diameter side flange 11.
- the inner diameter of the outer diameter side flange 8 is made larger than the outer diameter of the cage 3, the outer diameter of the inner diameter side flange 11 is made smaller than the inner diameter of the cage 3, and the outer diameter side flange 8 and the inner diameter side flange 11 are made.
- the cage 3 can be freely arranged relative to the first thrust trace 4 and the second thrust trace 5 between them.
- the diameter of the inscribed circle of the outer diameter side locking portion 9 is made slightly smaller than the outer diameter of the cage 3, and the diameter of the circumscribed circle of the inner diameter side locking portion 12 is made smaller than the inner diameter of the cage. A little bigger.
- the cage 3 holding the roller 2 is elastically deformed with the outer diameter side flange 8 and the inner diameter side flange 11, and the first thrust trace 4 and the second thrust trace 5 are combined.
- the first thrust trace 4 is assembled to a member made of an iron-based alloy having high hardness
- the second thrust trace 5 is assembled to a member made of an aluminum-based alloy having low hardness. Yes.
- the thickness dimension of the second thrust trace 5 is made larger than the thickness dimension of the first thrust trace 4.
- the thrust roller bearing with race 1 configured in this way is fitted with an outer diameter side flange 8 formed on the outer peripheral edge of the first thrust trace 4 in a holding portion 14 formed on the casing 13. In this state, it is attached to the rotation support part where the thrust load is generated. Further, the second thrust trace 5 is brought into contact with the end surface of the mating member 15. In this state, the mating member 15 is rotatably supported with respect to the casing 13. The thrust load applied between the mating member 15 and the casing 13 is supported by the thrust bearing 1 with a race.
- Such a thrust bearing with a race 1 is required to have the following functions (1) to (4) arranged side by side as high as possible.
- the cage 3, the first thrust trace 4 and the second thrust trace 5 should not be carelessly separated. This function is achieved by separating the thrust thrust bearing 1 with a race from the manufacturing factory of the bearing to an assembly factory such as a transmission and assembling the thrust thrust bearing 1 with a predetermined part. It is necessary to prevent it from becoming unobtainable and troublesome assembly work such as a transmission.
- the flow rate of the lubricating oil (lubricating oil flow rate) flowing through the internal space where the cage 3 and the roller 2 are installed is secured between the first thrust trace 4 and the second thrust trace 5. What you can do.
- This function ensures the strength of the oil film formed at the rolling contact portion between the rolling surface of each roller 2 and the first thrust trace portion 7 and the second thrust trace portion 10 during operation of the transmission and the like. It is required to effectively cool the rolling contact portion.
- the laced thrust roller bearing 1 can be assembled only in a predetermined direction with respect to the casing 13 or the like (it cannot be assembled in the reverse direction). This function is to prevent the thrust roller bearing 1 with a race from being damaged by the lubricating oil flow path being blocked by assembling the thrust roller bearing 1 with a race in the opposite direction. Is needed to.
- the outer diameter side engaging portion 9 and the inner diameter side engaging portion 12 and the peripheral edge of the cage 3 are increased while the outer margin is increased. It is necessary to widen the gaps that exist between the inner and outer peripheral surfaces of the radial flange 8 and the inner flange 11 and the cage 3.
- the engagement allowance cannot be excessively increased.
- the outer diameter side flange 8 is elastically deformed radially outward as shown in FIG. 9 (A) ⁇ (B) ⁇ (C).
- the outer peripheral edge portion of the retainer 3 is moved over the outer diameter side locking portion 9 while being held. This operation becomes difficult if the protrusion amount ⁇ of the outer diameter side locking portion 9 from the inner peripheral surface of the outer diameter side flange 8 is too large.
- a so-called full curl structure obtained by bending the distal end edge portion of the outer diameter side flange 8 radially inward over the entire circumference, and the distal end edge portion of the outer diameter side flange 8 are provided.
- a so-called partial curl structure obtained by bending a plurality of locations intermittently present in the circumferential direction inwardly in the radial direction.
- the protrusion amount ⁇ should be made considerably small, or the outer diameter of the cage 3 should be made considerably smaller than the inner diameter of the outer diameter side flange 8 instead of securing this protrusion amount ⁇ . In this case, the cage 3 cannot be assembled inside the outer diameter side flange 8.
- the amount of elastic deformation of the outer diameter side flange 8 when the cage 3 is incorporated inside the outer diameter side flange 8 can be increased (the range of elastic deformation can be widened). Therefore, even if the protrusion amount ⁇ of the outer diameter side locking portion 9 is increased and the difference between the outer diameter of the cage 3 and the inner diameter of the outer diameter side flange 8 is reduced to some extent, It can be installed inside the side flange 8 without any trouble. Then, as described in FIG. 3 and FIG. 4 of Japanese Patent Application Laid-Open No.
- the outer diameter side engaging portions of the partial curl structure are formed at a plurality of positions in the circumferential direction of the front end edge of the outer diameter side flange.
- the first thrust trace and the second thrust trace are in the meantime, the opening area on the outer diameter side of the internal space in which the cage and the rollers are installed can be widened to ensure the lubricating oil flow rate, and the functions (1) and (2) can be obtained.
- the functions (3) and (4) cannot be obtained even with the structure described in FIGS. 3 and 4 of Japanese Patent Application Laid-Open No. 2008-39031.
- the relative displacement in the radial direction between the first thrust trace 4 and the second thrust trace 5 constituting the thrust roller bearing 1 with a race is set to some extent (not excessively, but appropriately) ) It must be an acceptable structure. That is, the first thrust trace 4 and the second thrust trace 5 rotate together with these members while being supported by a pair of members that rotate relative to each other. Therefore, when the rotation centers of these members are displaced in the radial direction, the first thrust trace 4 and the second thrust trace 5 swing around each other.
- the second thrust trace surface 20 of the portion 10 is rubbed (slidably contacted), and the thrust roller bearing 1 with a race is in contact with the first thrust trace surface 17 and the second thrust trace surface 20 where the two rolling surfaces are in contact. Serious damage such as seizure of the iron and breakage of the cage 3 occurs.
- the outer diameter side engaging portion 9 has a full curl structure.
- the radial protrusion amount of the outer diameter side locking portion 9 is set to about 0.4 mm as described above. It is necessary to suppress.
- the thrust bearing with race 1 when the thrust bearing with race 1 is assembled between the casing 13 and the mating member 15, if the assembly direction is wrong, durability is impaired due to poor lubrication, etc., so that sufficient performance is exerted on the thrust bearing with race 1. I can't.
- the thrust roller bearing with race 1 can be assembled to the casing 13 in the opposite direction (in an irregular state) to the normal state shown in FIG.
- the first thrust trace 4 closes the gap 16 between the casing 13 and the counterpart member 15 and prevents the lubricating oil from flowing into the race-bearing roller bearing 1.
- FIGS. 11 and 12 of Japanese Patent Application Laid-Open No. 2004-28342 show the outer diameter of the second thrust trace portion of the second thrust trace as the first diameter.
- a structure is described which is larger than the outer diameter of the outer diameter side flange of the thrust trace.
- the portion that protrudes radially outward from the outer peripheral surface of the outer flange on the outer peripheral edge portion of the second thrust trace portion is the inner space of the thrust roller bearing with race.
- the function of (2) is impaired because a considerable portion of the outer diameter side opening is closed and the lubricating oil flow rate is reduced.
- the present invention increases the tolerance for the eccentricity of a pair of members that rotate relative to each other while ensuring the function of preventing separation between the cage and the pair of thrust traces.
- the purpose of this invention is to realize a structure of a thrust roller bearing with a race that is easy to handle and can secure a stable operating condition even under severe use conditions by increasing the amount of lubricating oil distributed to the cylinder.
- the thrust roller bearing with race of the present invention includes a cage, a plurality of rollers, a first thrust trace, and a second thrust trace.
- the cage is in the shape of a ring, and is provided with pockets that are long in the radial direction at a plurality of locations in the circumferential direction.
- the roller is arranged so as to be able to roll in each of the pockets.
- the first thrust trace and the second thrust trace are combined with the cage so as to be relatively rotatable and non-separable, and both are formed by bending a hard metal plate.
- the first thrust trace includes a flat and annular first thrust trace portion, a cylindrical outer flange provided in a state bent from the outer peripheral edge of the first thrust trace portion to one axial direction, and the outer diameter.
- Outer diameter side engaging portions provided in a state of projecting inward in the radial direction from the front end edge of the outer diameter side flange at a plurality of locations in the circumferential direction at a part of the front end edge of the side flange.
- the height dimension in the axial direction of the outer diameter side flange is made smaller at the portion where the outer diameter side locking portion is not provided than at the portion where the same is provided.
- the outer diameter of the outer diameter side flange is 60 mm to 120 mm.
- the second thrust trace has a flat and annular second thrust trace portion, a cylindrical inner flange provided in a state bent from the inner peripheral edge of the second thrust trace portion to one axial direction, and the inner diameter.
- An inner diameter side locking portion provided in a state of projecting outward in the radial direction from the distal end edge of the inner diameter side flange at a plurality of locations in the circumferential direction at a part of the distal end edge of the side flange.
- the inner diameter of the inner diameter side flange is 40 mm to 80 mm.
- the internal clearance is 1 mm to 2 mm.
- the internal gap is a dimension in which the first thrust trace and the second thrust trace can be relatively displaced in the radial direction without elastic deformation of each member, and the outer diameter side flange, the inner diameter side flange, and the holding
- the cage is formed into a hollow ring as a whole by combining the first cage element and the second cage element.
- the first cage element disposed on the first thrust trace side is bent at right angles in the same direction with respect to the axial direction from the inner and outer peripheral edges of the annular first flat plate portion.
- the first inner diameter side fitting cylindrical portion and the first outer diameter side fitting cylindrical portion are formed and configured.
- the second cage element disposed on the second thrust trace part side is fitted in the same direction with respect to the axial direction from the inner and outer peripheral edges of the annular second flat plate part, and fitted on the first inner diameter side
- a second inner diameter side fitting cylindrical portion and a second outer diameter side fitting cylindrical portion bent at a right angle in the opposite direction to the cylindrical portion and the first outer diameter side fitting cylindrical portion are formed and configured.
- the first inner diameter side fitting cylindrical portion is fitted into the second inner diameter side fitting cylindrical portion, and the first outer diameter side fitting cylindrical portion is externally attached to the second outer diameter side fitting cylindrical portion.
- the first cage element and the second cage element are combined with each other by fitting.
- the diameter of the second outer diameter side fitting cylindrical part is increased in the first half part farther from the second flat plate part than the base half part near the second flat plate part, and the first outer diameter side fitting cylindrical part Is fitted on the second outer diameter side fitting cylindrical portion only at the tip half portion.
- the second thrust trace is provided in a state of projecting radially outward from a ring-shaped second thrust trace portion (thrust trace body) and a part of the outer peripheral edge of the second thrust trace portion. And at least one projecting piece. Then, the outer diameter of the second thrust trace portion is smaller than the inner diameter of the outer diameter side flange, and the diameter of the circumscribed circle of the second thrust trace including the protruding piece is larger than the outer diameter of the outer diameter side flange. .
- the thickness dimension of the protruding piece is made smaller than the thickness dimension of the second thrust trace portion.
- step-difference part exists in the boundary part of the race surface which rolls and contacts the said roller among the 2nd thrust trace parts among the single side
- the protruding pieces are provided at a plurality of locations on the outer peripheral edge of the second thrust trace portion at equal intervals in the circumferential direction.
- the functions (1) to (4) described above can be arranged side by side in a high dimension. Specifically, while ensuring the function of preventing separation between the cage and the pair of thrust traces, the tolerance for the eccentricity of the pair of relatively rotating members is increased, and the amount of lubricating oil to be circulated inside is increased. By increasing the number, the handleability is good and a stable operation state can be secured even under severe use conditions.
- the separation preventing function of (1) is that the retainer and the first thrust trace are connected to the inner diameter side engaging portion and the retainer by the engagement of the outer diameter side retaining portion and the outer peripheral edge of the retainer.
- This retainer and the second thrust trace can be combined in a non-separable manner by engaging with the inner peripheral edge of each.
- the outer diameter side locking portion and the inner diameter side locking portion respectively provided at the distal end edges of the outer diameter side flange and the inner diameter side flange are All of them are formed intermittently at a plurality of locations in the circumferential direction of the leading edge of each flange. Therefore, the first thrust trace, the second thrust trace, and the retainer can be combined even if the protruding amount in the radial direction of the outer diameter side locking portion and the inner diameter side locking portion is increased.
- the protrusion amount in the radial direction of the outer diameter side locking portion and the inner diameter side locking portion can be increased, the difference between the inner diameter of the outer diameter side flange and the outer diameter of the cage, and the inner diameter side flange Even if the difference between the outer diameter of the cage and the inner diameter of the cage is increased to some extent, the function of preventing the separation of the cage from the first thrust trace and the second thrust trace can be performed reliably. As a result, a relatively large value such as 1 mm to 2 mm can be adopted as the internal clearance of the thrust roller bearing with race.
- the internal gap by taking a relatively large value as the internal gap, and by reducing the height dimension in the axial direction of the portion of the outer diameter side flange not provided with the outer diameter side locking portion.
- the amount of lubricating oil flowing through the internal space can be secured. That is, by reducing the height of the outer diameter side flange in part, the lubricating oil can easily pass through the outer diameter side flange in the radial direction. Further, by enlarging the internal gap, the lubricating oil can easily pass between the inner and outer peripheral edges of the cage, the inner peripheral surface of the outer diameter side flange, and the outer peripheral surface of the inner diameter side flange. As a result, the function (2) of securing the lubricating oil flow rate of the thrust roller bearing with race during operation can be obtained at a high level.
- a second outer diameter-side fitting cylindrical portion formed on the outer peripheral edge of the second cage element is formed as a first outer diameter-side fitting cylindrical portion formed on the outer peripheral edge of the first cage element constituting the cage.
- the outer fitting is performed only at the front half of the second outer diameter side fitting cylindrical portion, it is possible to secure the engagement margin between the outer peripheral edge of the retainer and the outer diameter side locking portion, and to It is possible to easily achieve both the prevention of rubbing between the outer peripheral edge and the outer diameter side locking portion.
- the gap between one surface of the projecting piece and the tip edge of the outer diameter flange is sufficiently widened so that the projecting piece prevents the flow of lubricating oil.
- the degree can be further reduced.
- FIG. 1 is a partial sectional view showing a first example of an embodiment of the present invention.
- 2 (A) and 2 (B) are diagrams showing two examples of the shape of the first thrust trace, in which (a) is a view seen from below in FIG. 1, and (b) These are views seen from the radial direction.
- FIGS. 3A and 3B are views from the top of FIG. 1 showing two examples of the shape of the second thrust trace.
- FIG. 4 is a partial sectional view showing a second example of the embodiment of the present invention.
- FIG. 5 is a cross-sectional view showing an implementation state of a durability test when the first thrust trace and the second thrust trace are operated eccentrically.
- FIG. 6 is a cross-sectional view showing a state of implementation of a test relating to the flow rate of lubricating oil.
- FIG. 7 is a partial sectional view showing an example of a conventionally known thrust bearing with a race.
- FIG. 8 is a partial cross-sectional view showing an example of the assembled state of the thrust bearing with race shown in FIG.
- FIG. 9 is a partial cross-sectional view sequentially showing the process of combining the first thrust trace and the cage holding the roller for the thrust bearing with race shown in FIG. 7.
- FIG. 10 is a perspective view of the thrust bearing with a race shown in FIG. 7, in which the cage is engaged between the outer diameter side flange and the inner diameter side flange based on the eccentric motion of the first thrust trace and the second thrust trace. It is sectional drawing which shows a state.
- the thrust roller bearing with race 1a of this example includes a cage 3, a plurality of rollers 2, a first thrust trace 4a, and a second thrust trace 5a.
- the configurations of the cage 3 and the roller 2 are the same as those of the conventional structure shown in FIG.
- the first thrust trace 4a and the second thrust trace 5a are formed by bending a hard metal, and can be freely rotated relative to the cage 3 in a non-separable manner as in the conventional structure. It is.
- the first thrust trace 4a includes a first thrust trace portion 7a, an outer diameter side flange 8a, and a plurality (three in the structure of FIG. 2A, six in the structure of FIG. 2B) of the outer diameter side. And a locking portion 9a.
- the first thrust trace portion 7a is flat and annular, and has a first thrust trace surface 17 on one side in the axial direction (the lower surface in FIG. 1).
- the outer diameter side flange 8a has a short cylindrical shape, and is bent at a substantially right angle from the outer peripheral edge of the first thrust trace portion 7a to one axial direction side (the lower side in FIG. 1) where the first thrust trace surface 17 exists. It is provided in the state.
- the outer diameter side locking portion 9a is a part of the front end edge of the outer diameter side flange 8a and is provided at a plurality of positions at equal intervals in the circumferential direction (three positions in the structure of FIG. 2A, the structure of FIG. 6 points) inward in the radial direction and bent by less than 90 degrees so as to protrude radially inward from the tip edge of the outer diameter side flange 8a.
- the diameter of the inscribed circle of the outer diameter side locking portion 9a is slightly smaller (about 1 mm to 2 mm) than the outer diameter of the cage 3.
- a notch portion 18 is formed in a portion between the outer diameter side engaging portions 9a adjacent in the circumferential direction at the remaining portion of the front end edge of the outer diameter side flange 8a. Based on the presence of these notches 18, the height of the outer flange 8 a in the axial direction is set at the portion where the outer diameter locking portion 9 a is not provided, and the outer diameter locking portion 9 a is provided. It is smaller than the part.
- the shape of the notch 18 is not particularly limited. The trapezoidal shape as shown in FIGS. 2A and 2B or the arc shape as shown in FIGS. 2B and 2B may be used.
- the first thrust trace 4a is 60 mm to 120 mm in outer diameter of the outer diameter side flange 8a.
- the second thrust trace 5a includes a second thrust trace portion 10a, an inner diameter side flange 11a, a plurality of (four in the illustrated example) inner diameter side locking portions 12a, and a plurality of structures (FIG. 3A). 3, and two protrusions 19 in the structure of FIG. 3B.
- the second thrust trace portion 10a is flat and annular, and has one axial surface (the upper surface in FIG. 1) as the second thrust trace surface 20.
- the inner diameter side flange 11a has a short cylindrical shape, and is bent substantially perpendicularly from the inner peripheral edge of the second thrust trace portion 10a to one axial side (the upper side in FIG. 1) where the second thrust trace surface 20 exists. Is provided.
- the inner diameter side locking portion 12a is a part of the front end edge of the inner diameter side flange 11a, and a plurality of circumferential positions (four positions in the illustrated example) are directed radially outward, and the front end edge of the inner diameter side flange 11a Is provided in a state of projecting radially outward from.
- the inner diameter side locking portion 12a is formed by bending so that the distal end edge of the inner diameter side flange 11a faces the outer side in the radial direction and the shape viewed from the axial direction is substantially V-shaped.
- the shape of the inner diameter side locking portion 12a is the same as the locking portion described in FIGS. 8 to 10 of Japanese Patent Application Laid-Open No.
- a notch 21 is formed in a portion between the inner diameter side engaging portions 12a adjacent in the circumferential direction, and the height dimension in the axial direction of the inner diameter side flange 11a is set to the inner diameter.
- the portion where the side locking portion 12a is not provided is smaller than the portion where the inner diameter side locking portion 12a is provided.
- the projecting piece 19 has a plurality of circumferentially equidistant positions in the outer peripheral edge of the second thrust trace portion 10a (three in the structure of FIG. 3A and two in the structure of FIG. 3B).
- the second thrust trace portion 10a is formed so as to protrude radially outward from the outer peripheral edge.
- the shape of the projecting piece 19 is not particularly limited. It may be a semicircular shape as shown in FIG. 3A or a rectangular shape as shown in FIG.
- the thickness dimension t of the projecting piece 19 is smaller than the thickness dimension T of the second thrust trace portion 10a (t ⁇ T). However, on the side opposite to the second thrust trace surface 20 (the lower side in FIG.
- the size of the second thrust trace 5a having such a shape is approximately 40 mm to 80 mm in terms of the inner diameter of the inner diameter side flange.
- the outer diameter of the second thrust trace portion 10a is larger than the diameter of the circumscribed circle of the roller 2, and smaller than the inner diameter of the outer diameter side flange 8a.
- the diameter of the circumscribed circle of the projecting piece 19 is larger than the outer diameter of the outer diameter side flange 8a.
- the thrust roller bearing with race 1a has an internal clearance by appropriately regulating the outer diameter and inner diameter of the cage 3, the inner diameter of the outer diameter side flange 8a, and the outer diameter of the inner diameter side flange 11a. Is set to 1 mm to 2 mm.
- the internal clearance is a dimension that allows the first thrust trace 4a and the second thrust trace 5a to be relatively displaced in the radial direction without being elastically deformed by each member constituting the thrust roller bearing with race 1a. If these thrust traces are decentered and a part of the circumferential direction of the cage 3 is sandwiched between the peripheral surfaces of the outer diameter side flange 8a and the inner diameter side flange 11a as shown in the upper part of FIG.
- the gaps are in an intervening state.
- the value of the internal gap is represented by the sum (c 1 + c 2 ) of the radial dimensions of these annular gaps.
- the thrust roller bearing with race 1a of this example is configured as described above, these thrust traces are secured while ensuring the separation preventing function between the cage 3, the first thrust trace 4a, and the second thrust trace 5a.
- the allowable amount with respect to the eccentricity of the pair of members that rotate relative to each other in a supported state can be increased, and the amount of lubricating oil to be circulated inside can be increased.
- the function of preventing separation while allowing relative rotation of the members is the outer peripheral side locking portion 9 a and the outer peripheral edge of the cage 3.
- the retainer 3 and the first thrust trace 4a are engaged with each other, and the retainer 3 and the second thrust trace 5a are coupled with each other by engagement between the inner diameter side locking portion 12a and the inner peripheral edge of the retainer 3.
- the outer diameter side locking portion 9a and the inner diameter side locking portion 12a are both circumferential directions of the leading edges of the outer diameter side flange 8a and the inner diameter side flange 11a, respectively. It is intermittently formed at a plurality of locations. Therefore, the first thrust trace 4a, the second thrust trace 5a, and the cage 3 can be combined even if the protruding amount in the radial direction of the outer diameter side locking portion 9a and the inner diameter side locking portion 12a is increased to some extent. .
- the thrust roller bearing with race 1a of this example employs a large value (1 mm to 2 mm) as the internal clearance, so that the first thrust trace 4a and the second thrust trace 5a have some swinging motion (eccentric motion). Even in the case of the above, the relative rotation of the cage 3 with respect to these thrust traces can be ensured. That is, since the internal gap is large, the distance between the inner peripheral surface of the outer diameter side flange 8a and the outer peripheral surface of the inner diameter side flange 11a is set in the circumferential direction as shown in the upper part of FIG. Even if it becomes narrow in part, the interval between the parts can be kept larger than the radial width of the cage 3.
- a relatively large value (1 mm to 2 mm) can be taken as the internal gap, and the outer diameter side locking portion 9a and the inner diameter side locking portion 12a are not provided among the outer diameter side flange 8a and the inner diameter side flange 11a.
- the lubricating oil flow rate of the thrust roller bearing with race 1a can be sufficiently secured during operation, and the lubricating oil flow rate is increased to 20% or more, for example, about 40%, compared to the conventional structure shown in FIG. Therefore, the reliability and durability of the thrust roller bearing with race 1a can be improved accordingly.
- a projecting piece 19 is provided on the outer peripheral edge of the second thrust trace portion 10a constituting the second thrust trace 5a.
- the diameter of the circumscribed circle of these projecting pieces 19 is larger than the outer diameter of the outer diameter side flange 8a. Therefore, the first thrust trace 4a provided with the outer diameter side flange 8a can be fitted into the holding portion 14 of the casing 13 shown in FIG. 8, but the second thrust trace 5a provided with the projecting piece 19 cannot be fitted. . For this reason, it can prevent reliably mounting
- the thickness dimension t of the projecting piece 19 is recessed in the surface side of the projecting piece 19 that faces the tip edge of the outer diameter side flange 8a. It is made small by not being.
- FIG. 4 shows a second example of the embodiment of the present invention.
- the structure of the retainer 3a, the outer peripheral edge of the retainer 3a and a plurality of outer diameter side locking portions 9a provided on the outer peripheral edge of the first thrust trace 4a It is easy to achieve both the securing of the engagement allowance and the prevention of friction between the outer peripheral edge of the cage 3a and the outer diameter side locking portion 9a.
- the basic configuration itself of the cage 3a is the same as that of the first example of the embodiment, and by combining the first cage element 25 and the second cage element 26, the whole has a hollow ring shape.
- the first cage element 25 disposed on the first thrust trace portion 7a side of the first thrust trace 4a is composed of a first flat plate portion 27 and a first inner diameter side fitting cylindrical portion 28. And a first outer diameter side fitting cylindrical portion 29.
- the first flat plate portion 27 is in the shape of a ring, and has elongated rectangular first through holes 30 that are long in the radial direction at a plurality of equally spaced circumferential positions.
- the first inner diameter side fitting cylindrical portion 28 and the first outer diameter side fitting cylindrical portion 29 are formed by being bent at right angles in the same direction with respect to the axial direction from both inner and outer peripheral edges of the first flat plate portion 27.
- positioned at the 2nd thrust trace part 10b side of the 2nd thrust trace 5b is the 2nd flat plate part 31, the 2nd internal diameter side fitting cylindrical part 32, and a 2nd outer diameter.
- the side fitting cylindrical part 33 is provided.
- the second flat plate portion 31 is in the shape of a ring, and is formed in a plurality of equally spaced circumferential locations in the shape of a long rectangle, each of which is radially long, and the same number of second through holes 34 as the first through holes 30 are formed radially.
- the second inner diameter side fitting cylindrical portion 32 and the second outer diameter side fitting cylindrical portion 33 are in the same direction with respect to the axial direction from the inner and outer peripheral edges of the second flat plate portion 31, and the first inner diameter side fitting The cylindrical portion 28 and the first outer diameter side fitting cylindrical portion 29 are formed to be bent at right angles to the opposite side. Further, the diameter of the second outer diameter side fitting cylindrical portion 33 is made larger at the front half portion 36 on the side farther from the second flat plate portion 31 than at the base half portion 35 near the second flat plate portion 31, The two outer diameter side fitting cylindrical portions 33 are stepped cylindrical shapes.
- the first retainer element 25 and the second retainer element 26 are fitted inside the first inner diameter side fitting cylindrical portion 28 to the second inner diameter side fitting cylindrical portion 32 by an interference fit, and the first outer diameter side fitting is performed.
- the cylindrical portion 29 By attaching the cylindrical portion 29 to the front half portion 36 of the second outer diameter side fitting cylindrical portion 33 with an interference fit, these cage elements are combined with each other to form a cage 3a.
- the first outer diameter side fitting cylindrical portion 29 is fitted on the second outer diameter side fitting cylindrical portion 33 only at the front half portion 36. Therefore, the height (axial dimension) of the first outer diameter side fitting cylindrical portion 29 is set to be equal to or lower than the height of the tip half portion 36.
- the combination work of these cage elements is the first through hole 30 formed in the first flat plate portion 27 of the first cage element 25 and the second flat plate portion 31 of the second cage element 26.
- the phase of the two through holes 34 is adjusted, and the rollers 2 are disposed between these through holes.
- the length (diameter direction dimension) of the first through hole 30 and the second through hole 34 is larger than the length of the roller 2, and the width (circumferential direction dimension) of the first through hole 30 and the second through hole 34 is the roller. 2 is smaller than the outer diameter. Accordingly, when the cage 3 a is configured by combining the first cage element 25 and the second cage element 26, each roller 2 prevents dropping between the first through hole 30 and the second through hole 34. In this state, it is held so that it can roll freely. That is, the first through hole 30 and the second through hole 34 are combined to form the pocket 6.
- the structure of the present example configured as described above, it is possible to secure the engagement margin between the outer peripheral edge of the cage 3a and the plurality of outer diameter side locking portions 9a provided on the outer peripheral edge portion of the first thrust trace 4a.
- the configuration and operation of the other parts of this example are substantially the same as those of the first example of the embodiment except that the protruding piece 19 (see FIGS. 1 and 3) is omitted. Is omitted.
- the projecting piece 19 can also be provided on the outer peripheral edge of the second thrust trace portion 10b constituting the second thrust trace 5b.
- the cage used when practicing the present invention adopts a structure in which a pair of cage elements each obtained by bending a metal plate are combined in a hollow ring shape.
- a metal plate constituting these cage elements for example, a carbon steel plate having a thickness of about 0.4 mm (for example, SPCC material) and having a surface hardness of Hv400 to Hv850 can be used.
- the axial thickness of the cage should be 80% or less of the diameter of the roller, so that both sides of the cage in the axial direction, the first thrust trace surface, and the second thrust surface It is preferable to ensure the thickness of the annular space between the race surface and the lubricating oil flow rate.
- the axial thickness of the cage is less than 50% of the diameter of the roller, it becomes difficult to engage the inner surface of each pocket formed in the cage and the rolling surface of these rollers (this holding). It is difficult to regulate the axial position of the container with the rollers, and if you try to force it, the inner surface of each pocket and the rolling surface of these rollers will rub against each other strongly) The smooth rolling of these rollers There is a high possibility of being disturbed. Therefore, the axial thickness of the cage is preferably within a range of 50% to 80% of the diameter of the roller.
- the partial curl processing can be performed when the thickness of the first thrust trace is in the range of 0.6 mm to 2.0 mm. In the case of full curl processing, if the thickness exceeds 1.0 mm, it is difficult to process the outer diameter side locking piece by press processing that can be performed at low cost.
- usable materials are the same as those of the first thrust trace. Its thickness can be in the range of 0.6 mm to 5.0 mm.
- Table 1 and FIG. 5 show the effect of the size of the internal clearance of the thrust roller bearing with race on the durability when the first thrust trace and the second thrust trace are decentered from each other.
- Test eccentricity test
- the test load is applied to the thrust roller bearing 1b with a race every two seconds (one cycle 4) via the thrust roller bearing 1b with a race and a thrust bearing 24 different from the test object. Added repeatedly (as seconds). The first thrust trace and the second thrust trace were concentric with each other.
- the test is performed while measuring the vibration generated in the thrust roller bearing 1b with a race with a vibrometer. When this vibration exceeds a preset threshold value, the thrust roller bearing 1b with a race has reached the end of its life. The test was terminated at that time.
- “x” marks representing failures are shown along with the time until censoring. If the vibration does not increase until 60 hours have passed, the test is terminated at that point, the thrust roller bearing with race 1b is disassembled, the cage is damaged, the thrust tracing surface is flaking, etc. The presence or absence of damage was visually observed, and if there was any damage, “x” mark indicating failure, “ ⁇ ” mark indicating pass if there was no damage, Table 1 Each is described in.
- each of Examples 1 to 6 has the size of the internal gap within the range of 1 mm to 2 mm, and even when operated under a large eccentric amount such as 0.6 mm, Even when the calculated life reached 60 hours, no damage such as breakage of the cage or flaking occurred. This is an effect obtained by setting the internal gap to 1 mm or more.
- test conditions are as follows.
- Table 2 shows the results of tests conducted under these conditions.
- the structures of Examples 1 to 6 and Comparative Examples 1 to 7 correspond to those in Tables 1 and 2, respectively (the same specifications).
- the thrust roller bearings with races of Examples 1 to 6 belonging to the technical scope of the present invention are all related to the rotational speed.
- the amount of lubricating oil passing through the internal space can be secured twice or more.
- Comparative Example 1 The structure of Comparative Example 1 is provided with a full curl type outer diameter side locking portion, but the internal gap is 0.8 mm, the pinching amount is 0.2 mm, and the test is completed after 60 hours. However, when the inside was confirmed, the cage was cracked. In the load ON / OFF test, no abnormality occurred even after 60 hours. However, the flow rate of the lubricating oil is small because the opening area is narrow, and it is understood that it is difficult to ensure sufficient durability when the use conditions become severe.
- Comparative Examples 2 to 5 a plurality of outer diameter side locking portions are intermittently formed in the circumferential direction in the distal end edge portion of the outer diameter side flange, and adjacent outer diameter sides in the circumferential direction. A notch was formed between the locking portions, and the internal gap was set to 0.8 mm or 2.3 mm, and the eccentricity test passed as far as Comparative Examples 3 and 5 were concerned.
- Comparative Examples 3 and 5 since the internal gap was excessive, in the load ON / OFF test, the cage was damaged during the load ON / OFF test due to a large drop amount of the cage at the OFF time. Moreover, regarding Comparative Examples 2 and 4, in the eccentric test, the cage was damaged based on wear of the outer peripheral edge of the cage.
- Comparative Examples 6 and 7 the conventional tab structure shown in FIGS. 1 and 2 of Japanese Patent Application Laid-Open No. 2004-28342, which has been widely used in the past, is shown in FIGS. As shown, it is difficult to provide an outer-diameter side locking portion having a large protrusion at the tip edge of the outer-diameter flange constituting the thin first thrust trace, and it is therefore difficult to ensure an internal gap. That is, in Comparative Examples 6 and 7, the internal gaps were as small as 0.6 mm and 0.4 mm, respectively, and in the eccentric test, wear occurred on the outer peripheral edge of the cage and the cage broke. In the load ON / OFF test, the cage breakage occurred midway.
- the thrust roller bearing with race of the present invention can be used not only for automobile transmissions, but also for rotation support parts of various rotating machines such as agricultural machinery, construction machinery, steel machinery, and auxiliary machinery for engines such as compressors.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
Description
この機能は、レース付スラスト軸受1を軸受の製造工場からトランスミッションなどの組立工場に輸送し、所定部分に組み付けるまでの間、これらの部材が分離することで、レース付スラスト軸受1本来の性能を得られなくなったり、トランスミッションなどの組立作業が面倒になったりすることを防止するために必要とされる。
この機能は、トランスミッションなどの運転時に、それぞれのころ2の転動面と第一スラストレース部7および第二スラストレース部10との転がり接触部に形成される油膜の強度を確保するとともに、これらの転がり接触部を効果的に冷却するために必要とされる。
この機能は、レース付スラスト軸受1やトランスミッションなどの製造誤差、組み付け誤差などにより、第一スラストレース4と第二スラストレース5の回転中心が多少ずれた場合でも、レース付スラスト軸受1の機能を確保するために必要とされる。
この機能は、レース付スラストころ軸受1を逆方向に組み付けることで、潤滑油の流路が塞がれて、このレース付スラストころ軸受1に、焼き付きなどの損傷が発生することを防止するために必要とされる。
図1~図3は、本発明の実施の形態の第1例を示している。本例のレース付スラストころ軸受1aは、保持器3と、複数本のころ2と、第一スラストレース4a、第二スラストレース5aとを備える。このうちの保持器3およびころ2の構成については、図7に示した従来構造と同様であるから、同等部分には同一符号を付して、重複する説明は省略する。また、第一スラストレース4aと第二スラストレース5aが、硬質金属を曲げ形成して構成され、保持器3と相対回転を自在に、かつ、非分離に組み合わされる点についても、従来構造と同様である。
図4は、本発明の実施の形態の第2例を示している。本例の場合には、保持器3aの構造を工夫することにより、この保持器3aの外周縁と、第一スラストレース4aの外周縁部に設けた複数の外径側係止部9aとの係り代の確保と、これら保持器3aの外周縁と外径側係止部9aとの擦れ合い防止との両立を図りやすくしている。
レース付スラストころ軸受の内径: 54mm
レース付スラストころ軸受の軸方向厚さ(軸受幅): 5.4mm
試験荷重(P/C): 0.4(Fa=12600N)
回転速度(第一スラストレース側回転): 6000min-1
潤滑条件: ATFにより回転中心まで浸漬する油浴
潤滑油温度: 120℃
レース付スラスト軸受の内径: 54mm
レース付スラスト軸受の軸方向厚さ(軸受幅): 5.4mm
試験荷重(P/C): 0.05(Fa=12600N)
回転速度(第二スラストレース側回転): 500min-1、3000min-1、5000min-1の3段階
潤滑条件: ATFを5kPaの圧力で内径側から供給
潤滑油温度: 100℃
第一スラストレースの厚さ: 0.8mm
第二スラストレースの厚さ: 1.6mm
2 ころ
3、3a 保持器
4、4a 第一スラストレース
5、5a、5b 第二スラストレース
6 ポケット
7、7a 第一スラストレース部
8、8a 外径側フランジ
9、9a 外径側係止部
10、10a、10b 第二スラストレース部
11、11a 内径側フランジ
12、12a 内径側係止部
13 ケーシング
14 保持部
15 相手部材
16 隙間
17 第一スラストレース面
18 切り欠き部
19 突片
20 第二スラストレース面
21 切り欠き部
22 段差部
23 偏心治具
24 スラスト軸受
25 第一保持器素子
26 第二保持器素子
27 第一平板部
28 第一内径側嵌合円筒部
29 第一外径側嵌合円筒部
30 第一透孔
31 第二平板部
32 第二内径側嵌合円筒部
33 第二外径側嵌合円筒部
34 第二透孔
35 基半部
36 先半部
Claims (5)
- それぞれが放射方向に長いポケットを円周方向複数箇所に設けた、円輪状の保持器と、
前記ポケットのそれぞれに転動自在に配置されている、複数本のころと、
前記保持器と相対回転を自在にかつ非分離に組み合わされた第一スラストレストおよび第二スラストレースと、
を備え、
第一スラストレースは、硬質金属板を曲げ形成して構成され、平坦で円輪状の第一スラストレース部と、第一スラストレース部の外周縁から軸方向片側に折れ曲がった状態で設けられた円筒状の外径側フランジと、この外径側フランジの先端縁の一部で円周方向複数箇所に、この外径側フランジの先端縁から径方向内側に突出する状態で設けられた外径側係止部とを備え、前記外径側フランジの軸方向に関する高さ寸法は、前記外径側係止部を設けていない部分で、前記外径側係止部を設けた部分よりも小さく、前記外径側フランジの外径が60mm~120mmであり、
第二スラストレースは、硬質金属板を曲げ形成して構成され、平坦で円輪状の第二スラストレース部と、第二スラストレース部の内周縁から軸方向片側に折れ曲がった状態で設けられた円筒状の内径側フランジと、この内径側フランジの先端縁の一部で円周方向複数箇所に、この内径側フランジの先端縁から径方向外側に突出する状態で設けられた内径側係止部とを備え、前記内径側フランジの内径が40mm~80mmである、
レース付スラストころ軸受において、
前記外径側フランジおよび内径側フランジと前記保持器とを同心に配置したと仮定した状態で、このうちの外径側フランジの内周面および内径側フランジの外周面と前記保持器の内外両周面との間にそれぞれ存在する環状隙間の径方向寸法の和をレース付スラストころ軸受の内部隙間とした場合に、この内部隙間が1mm~2mmの範囲にある、
レース付スラストころ軸受。 - 前記保持器が、第一保持器素子と第二保持器素子を組み合わせることにより、全体を中空環状としたものであり、
第一スラストレース部側に配置される第一保持器素子は、円輪状の第一平板部の内外両周縁から軸方向に関して互いに同じ方向に直角に折り曲げた、第一内径側嵌合円筒部と第一外径側嵌合円筒部を形成して構成され、
第二スラストレース部側に配置される第二保持器素子は、円輪状の第二平板部の内外両周縁から軸方向に関して互いに同じ方向で、かつ、第一内径側嵌合円筒部および第一外径側嵌合円筒部と反対方向に直角に折り曲げた、第二内径側嵌合円筒部と第二外径側嵌合円筒部を形成して構成され、
第一内径側嵌合円筒部を第二内径側嵌合円筒部に内嵌するとともに、第一外径側嵌合円筒部を第二外径側嵌合円筒部に外嵌することにより、第一保持器素子と第二保持器素子を互いに組み合わせており、第二外径側嵌合円筒部の直径を、第二平板部寄りの基半部よりもこの第二平板部から遠い側の先半部で大きくしており、第一外径側嵌合円筒部を第二外径側嵌合円筒部に、この先半部でのみ外嵌している、
請求項1に記載したレース付スラストころ軸受。 - 第二スラストレースが、円輪状の第二スラストレース部と、第二スラストレース部の外周縁の一部から径方向外方に突出する状態で設けられた、少なくとも1個の突片とを備え、第二スラストレース部の外径が前記外径側フランジの内径よりも小さく、前記突片を含む第二スラストレースの外接円の直径が、この外径側フランジの外径よりも大きい、請求項1または2に記載したレース付スラストころ軸受。
- 前記突片の厚さ寸法が、第二スラストレース部の厚さ寸法よりも小さく、前記突片のうちで前記外径側フランジの先端縁と対向する片面と、第二スラストレース部のうちで前記ころを転がり接触させるレース面との境界部に、段差部が存在する、請求項3に記載したレース付スラストころ軸受。
- 前記突片が、第二スラストレース部の外周縁の複数箇所に、円周方向に関して等間隔に設けられている、請求項4に記載したレース付スラストころ軸受。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/824,774 US8827566B2 (en) | 2011-09-20 | 2012-08-28 | Thrust roller bearing with races |
EP12834118.7A EP2713067A4 (en) | 2011-09-20 | 2012-08-28 | ROLL BEARING WITH GROOVES |
KR1020137034425A KR101521377B1 (ko) | 2011-09-20 | 2012-08-28 | 레이스를 갖는 스러스트 롤러 베어링 |
CN201280032175.XA CN103635706A (zh) | 2011-09-20 | 2012-08-28 | 带座圈的推力滚子轴承 |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011-204206 | 2011-09-20 | ||
JP2011204206 | 2011-09-20 | ||
JP2012-183813 | 2012-08-23 | ||
JP2012183813A JP2013079718A (ja) | 2011-09-20 | 2012-08-23 | レース付スラストころ軸受 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013042512A1 true WO2013042512A1 (ja) | 2013-03-28 |
Family
ID=47914289
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2012/071672 WO2013042512A1 (ja) | 2011-09-20 | 2012-08-28 | レース付スラストころ軸受 |
Country Status (6)
Country | Link |
---|---|
US (1) | US8827566B2 (ja) |
EP (1) | EP2713067A4 (ja) |
JP (1) | JP2013079718A (ja) |
KR (1) | KR101521377B1 (ja) |
CN (1) | CN103635706A (ja) |
WO (1) | WO2013042512A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11118627B2 (en) * | 2017-07-21 | 2021-09-14 | Koyo Bearings North America Llc | Thrust bearing cage with shortened flange |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2423524B1 (en) * | 2009-04-20 | 2018-04-18 | NSK Ltd. | Thrust roller bearing and method of manufacturing thrust race thereof |
JP5864317B2 (ja) * | 2011-04-15 | 2016-02-17 | Ntn株式会社 | スラスト軸受 |
CN104455338A (zh) * | 2014-11-28 | 2015-03-25 | 国茂减速机集团有限公司 | 一种新型输出法兰支承结构 |
JP6547388B2 (ja) * | 2015-04-22 | 2019-07-24 | 日本精工株式会社 | 組合せニードル軸受 |
US9933010B2 (en) * | 2016-01-25 | 2018-04-03 | Schaeffler Technologies AG & Co. KG | Tiered axial bearing |
WO2019089058A1 (en) * | 2017-11-06 | 2019-05-09 | Koyo Bearings North America Llc | Two-piece roller retainer cage for a roller thrust bearing |
JP7147257B2 (ja) * | 2018-05-14 | 2022-10-05 | 株式会社ジェイテクト | スラストころ軸受 |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0167328U (ja) * | 1987-10-23 | 1989-04-28 | ||
JPH0233924U (ja) * | 1988-08-25 | 1990-03-05 | ||
JPH11247868A (ja) * | 1997-12-19 | 1999-09-14 | Torrington Co:The | 不正組立防止タブ付スラスト軸受組立体 |
JP2000266043A (ja) * | 1999-03-19 | 2000-09-26 | Nsk Ltd | スラストころ軸受 |
JP2004116663A (ja) * | 2002-09-26 | 2004-04-15 | Jatco Ltd | スラストベアリング |
JP2006207618A (ja) * | 2005-01-25 | 2006-08-10 | Nsk Ltd | スラストニードル軸受 |
JP2008025771A (ja) * | 2006-07-24 | 2008-02-07 | Ntn Corp | スラスト軸受 |
JP2008039031A (ja) * | 2006-08-04 | 2008-02-21 | Nsk Ltd | スラストころ軸受 |
JP2010043681A (ja) * | 2008-08-12 | 2010-02-25 | Ntn Corp | スラスト軸受の組立方法 |
JP2010159789A (ja) * | 2009-01-07 | 2010-07-22 | Jtekt Corp | スラストころ軸受 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6467328A (en) | 1987-09-08 | 1989-03-14 | Toyo Tanso Co | Composite sheet material and its manufacture |
JPH0233924A (ja) | 1988-07-23 | 1990-02-05 | Ricoh Co Ltd | 半導体装置 |
JP2003049844A (ja) * | 2001-08-03 | 2003-02-21 | Nsk Ltd | スラストころ軸受 |
JP2004028342A (ja) | 2003-07-01 | 2004-01-29 | Nsk Ltd | スラストころ軸受 |
JP4305187B2 (ja) | 2003-07-29 | 2009-07-29 | 日本精工株式会社 | スラストころ軸受 |
CN1826477A (zh) * | 2003-09-02 | 2006-08-30 | Ntn株式会社 | 推力轴承 |
JPWO2006137468A1 (ja) * | 2005-06-23 | 2009-01-22 | 日本精工株式会社 | スラストころ軸受 |
EP2423524B1 (en) * | 2009-04-20 | 2018-04-18 | NSK Ltd. | Thrust roller bearing and method of manufacturing thrust race thereof |
-
2012
- 2012-08-23 JP JP2012183813A patent/JP2013079718A/ja active Pending
- 2012-08-28 CN CN201280032175.XA patent/CN103635706A/zh active Pending
- 2012-08-28 KR KR1020137034425A patent/KR101521377B1/ko not_active IP Right Cessation
- 2012-08-28 US US13/824,774 patent/US8827566B2/en not_active Expired - Fee Related
- 2012-08-28 WO PCT/JP2012/071672 patent/WO2013042512A1/ja active Application Filing
- 2012-08-28 EP EP12834118.7A patent/EP2713067A4/en not_active Withdrawn
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0167328U (ja) * | 1987-10-23 | 1989-04-28 | ||
JPH0233924U (ja) * | 1988-08-25 | 1990-03-05 | ||
JPH11247868A (ja) * | 1997-12-19 | 1999-09-14 | Torrington Co:The | 不正組立防止タブ付スラスト軸受組立体 |
JP2000266043A (ja) * | 1999-03-19 | 2000-09-26 | Nsk Ltd | スラストころ軸受 |
JP2004116663A (ja) * | 2002-09-26 | 2004-04-15 | Jatco Ltd | スラストベアリング |
JP2006207618A (ja) * | 2005-01-25 | 2006-08-10 | Nsk Ltd | スラストニードル軸受 |
JP2008025771A (ja) * | 2006-07-24 | 2008-02-07 | Ntn Corp | スラスト軸受 |
JP2008039031A (ja) * | 2006-08-04 | 2008-02-21 | Nsk Ltd | スラストころ軸受 |
JP2010043681A (ja) * | 2008-08-12 | 2010-02-25 | Ntn Corp | スラスト軸受の組立方法 |
JP2010159789A (ja) * | 2009-01-07 | 2010-07-22 | Jtekt Corp | スラストころ軸受 |
Non-Patent Citations (1)
Title |
---|
See also references of EP2713067A4 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11118627B2 (en) * | 2017-07-21 | 2021-09-14 | Koyo Bearings North America Llc | Thrust bearing cage with shortened flange |
Also Published As
Publication number | Publication date |
---|---|
US20140147071A1 (en) | 2014-05-29 |
KR101521377B1 (ko) | 2015-05-18 |
JP2013079718A (ja) | 2013-05-02 |
KR20140014296A (ko) | 2014-02-05 |
CN103635706A (zh) | 2014-03-12 |
EP2713067A1 (en) | 2014-04-02 |
EP2713067A4 (en) | 2015-08-05 |
US8827566B2 (en) | 2014-09-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2013042512A1 (ja) | レース付スラストころ軸受 | |
JP6253877B2 (ja) | 円筒ころ軸受 | |
US9151324B2 (en) | Double-row angular ball bearing | |
JP3039087B2 (ja) | 保持器付自動調心ころ軸受 | |
US10539183B2 (en) | Rolling bearing | |
KR101576072B1 (ko) | 롤링 베어링용 유지기, 이것을 구비한 내륜 조립체, 외륜 조립체, 및 롤링 베어링 | |
US10550891B2 (en) | Seal member for rolling bearing and rolling bearing assembly | |
US10655678B2 (en) | Cage and roller assembly | |
US10465745B2 (en) | Thrust roller bearing cage and thrust roller bearing | |
JP2004028342A (ja) | スラストころ軸受 | |
US11248656B2 (en) | Cage and roller assembly | |
JP2014181792A (ja) | レース付スラストころ軸受 | |
US10634191B2 (en) | Cage and roller assembly | |
JPH1151061A (ja) | ころ軸受用合成樹脂製保持器 | |
JP2000266043A (ja) | スラストころ軸受 | |
US10458488B2 (en) | One-way clutch | |
US7927022B2 (en) | Thrust roller bearing | |
WO2024100870A1 (ja) | 転がり軸受 | |
KR102029662B1 (ko) | 레이디얼 볼 베어링용 케이지 | |
JP2006112599A (ja) | スラストころ軸受用レースとスラストころ軸受 | |
JP2001041252A (ja) | スラストころ軸受 | |
JP2006214533A (ja) | スラスト円筒ころ軸受 | |
JP2024013998A (ja) | 外輪案内保持器付き玉軸受および偏心回転装置 | |
CN116601398A (zh) | 推力滚子轴承 | |
JP2000274438A (ja) | 合成樹脂製保持器を備えたころ軸受 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 12834118 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 13824774 Country of ref document: US |
|
ENP | Entry into the national phase |
Ref document number: 20137034425 Country of ref document: KR Kind code of ref document: A |
|
REEP | Request for entry into the european phase |
Ref document number: 2012834118 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2012834118 Country of ref document: EP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |