WO2021235022A1 - Self-aligning roller bearing retainer - Google Patents

Self-aligning roller bearing retainer Download PDF

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Publication number
WO2021235022A1
WO2021235022A1 PCT/JP2021/004438 JP2021004438W WO2021235022A1 WO 2021235022 A1 WO2021235022 A1 WO 2021235022A1 JP 2021004438 W JP2021004438 W JP 2021004438W WO 2021235022 A1 WO2021235022 A1 WO 2021235022A1
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WO
WIPO (PCT)
Prior art keywords
cage
self
aligning roller
row
single row
Prior art date
Application number
PCT/JP2021/004438
Other languages
French (fr)
Japanese (ja)
Inventor
廣幸 前田
康樹 薮林
Original Assignee
中西金属工業株式会社
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Publication of WO2021235022A1 publication Critical patent/WO2021235022A1/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
    • 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
    • F16C19/34—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 both radial and axial load
    • F16C19/38—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 both radial and axial load with two or more rows of 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
    • F16C25/00—Bearings for exclusively rotary movement adjustable for wear or play
    • F16C25/06—Ball or roller bearings
    • F16C25/08—Ball or roller bearings self-adjusting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/46—Cages for rollers or needles
    • F16C33/48—Cages for rollers or needles for multiple rows of rollers or needles
    • 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
    • F16C33/66—Special parts or details in view of lubrication
    • 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

Definitions

  • the present invention relates to a cage used for a self-aligning roller bearing.
  • Self-aligning roller bearings can carry radial loads and axial loads in both directions with a single bearing, and because they have a particularly large radial load capacity, they are suitable for places where heavy loads and impact loads are applied. It is used for the drive unit and axles of.
  • a cage using two cages for individually guiding the two rows of rollers for each row guides both of the two rows of rollers.
  • an integrated cage see, for example, Patent Document 2.
  • a cage for self-aligning roller bearings as in Patent Document 1 guides two rows of roller rows individually by two separate cages, so that when a load is applied to one of the roller rows, one of them is used.
  • the load may not be transmitted from one of the cages to the other cage and the other roller row and cage may not rotate.
  • bearing assembly workability is good without causing roller skew or fretting and shortening the bearing life, and holding for self-aligning roller bearings that can adopt not only roller guidance method but also raceway ring guidance method.
  • the purpose is to provide a vessel.
  • the gist of the present invention is as follows.
  • a cage used for self-aligning roller bearings having two rows of rollers It consists of a pair of single row cages that guide the two rows of rollers for each row.
  • the single row cage is The large-diameter ring portion and the small-diameter ring portion separated in the axial direction are connected by a plurality of pillar portions to form a shape.
  • An uneven engagement portion having an engagement depth larger than the axial gap of the bearing is provided on the end face on the large diameter side, or A concave portion is provided on the large-diameter side end surface of one of the single-row cages, and a convex portion is provided on the large-diameter side end surface of the other single-row holder, so that the concave portion and the convex portion engage with each other.
  • the engagement depth of the portion is made larger than the axial gap of the bearing. It is characterized in that it is used in a state where the concave-convex engaging portions of the pair of single-row cages are engaged with each other, or in a state where the concave portions and the convex portions are engaged with each other. Cage for self-aligning roller bearings.
  • a cage used for self-aligning roller bearings having two rows of rollers It consists of a pair of single row cages that guide the two rows of rollers for each row.
  • the single row cage is The large-diameter ring portion and the small-diameter ring portion separated in the axial direction are connected by a plurality of pillar portions to form a shape.
  • the large-diameter side end face has a connecting body engaging portion having an engaging depth larger than the axial gap of the bearing. It is characterized in that it is used in a state where the connecting body is engaged with the connecting body engaging portion of the pair of the single row cages. Cage for self-aligning roller bearings.
  • the connecting body engaging portion is a fitting hole and has a fitting hole.
  • the connecting body is a shaft body that fits into the fitting hole.
  • the cage for self-aligning roller bearings according to [2].
  • the pair of single row cages has the same shape.
  • the cage for self-aligning roller bearings according to any one of [1] to [3].
  • the cage for self-aligning roller bearings comprises a pair of single row cages that guide two rows of roller rows for each row.
  • the single row cage has a concave-convex engaging portion having an engaging depth larger than the axial clearance of the self-aligning roller bearing on its large-diameter side end surface. Then, it is used in a state where the uneven engaging portions of the pair of single row cages are engaged with each other.
  • the pair of single-row cages are provided with a concave portion on the large-diameter side end surface of one of the single-row cages and a convex portion on the large-diameter side end surface of the other single-row cage.
  • the engagement depth of the concave-convex engaging portion with which the convex portion engages is made larger than the axial gap of the bearing. Then, it is used in a state where the concave portion and the convex portion are engaged with each other.
  • the single row cage has a coupling engaging portion having a larger engaging depth than the axial clearance of the self-aligning roller bearing on its large diameter side end face. Then, it is used in a state where the connecting body is engaged with the connecting body engaging portion of the pair of the single row cages. Therefore, in the cage for self-aligning roller bearings according to the present invention, the pair of the single row cages are integrated in the used state.
  • the cage for the self-aligning roller bearing according to the present invention is one of the single row cages when a load is applied to one of the roller rows.
  • the load is transmitted from to the other single row cage, and one roller row and the single row cage and the other roller row and the single row cage rotate together. Therefore, the cage for self-aligning roller bearings according to the present invention can equalize the rotation (revolution) of both roller rows.
  • the cage for self-aligning roller bearings according to the present invention has a problem in the configuration of Patent Document 1 in which two rows of rollers are guided by two separate cages, that is, roller skewing and fretting. There is no problem that the life of the bearing is shortened.
  • the cage for the self-aligning roller bearing according to the present invention is composed of the pair of the single row cages, it is necessary to insert the cage while elastically deforming the cage when assembling the self-aligning roller bearing. As there is no bearing, assembly workability is good.
  • the cage for the self-aligning roller bearing according to the present invention is composed of the pair of the single row cages, the cage can be incorporated into the inner ring from the axial direction even in the raceway ring guide type.
  • a raceway ring guide type that cannot be adopted by an integrated cage that guides both two rows of rollers as in Patent Document 2 can also be adopted.
  • FIG. 5 is an enlarged expansion view of a main part showing an example in which one concave portion is provided in one single row cage and one convex portion is provided in the other single row cage in a pair of single row cages.
  • FIG. 5 is an enlarged expansion view of a main part showing an example in which one concave portion is provided in one single row cage and one convex portion is provided in the other single row cage in a pair of single row cages.
  • the direction of the rotation axis J (see FIGS. 4A and 14) of the self-aligning roller bearing 10 is "axial direction"
  • the direction orthogonal to the axis direction is “diametrical direction”
  • the direction away from the rotation axis J is “radial direction”.
  • the direction in which the rollers 13 are lined up in rows C1 or C2 is referred to as "circumferential direction”.
  • the self-aligning roller bearing cage 1A according to the embodiment of the present invention shown in the perspective view of FIG. 1 and the exploded perspective view of FIG. 2 has a perspective view of FIG. 3, a vertical sectional view of FIG. 4A, and FIG. 4B. As shown in the vertical cross-sectional perspective view of the above, it is a roller guide system and consists of a pair of single row cages 2A and 2B.
  • the single row cages 2A and 2B can be manufactured by stamping a steel plate, injection molding a synthetic resin, or shaving a metal or a synthetic resin.
  • the pair of single row cages 2A and 2B have, for example, the same shape, but may have different shapes. However, by making the pair of single row cages 2A and 2B the same shape, it is possible to reduce the manufacturing cost, the parts management cost, and the like.
  • the single-row cages 2A and 2B have a shape in which a large-diameter ring portion 3 and a small-diameter ring portion 4 separated in the axial direction are connected by a plurality of pillar portions 5.
  • a plurality of pocket holes P for accommodating spherical rollers 13 are formed at equal intervals in the circumferential direction.
  • the single row cages 2A and 2B have a concave-convex engaging portion A on the large-diameter side end surface 3A.
  • the side surface of the pillar portion 5 on the pocket hole P side is composed of a guide surface 6 which is a guide surface of the spherical roller 13, a retaining convex portion 7 which is a retaining convex portion 7 which prevents the spherical roller 13 from coming off in the outer diameter direction, and a recessed portion 8.
  • the concave portion 8 inward in the radial direction of the retaining convex portion 7 interferes with the spherical roller 13 (see, for example, FIGS. 3 and 4A) when the retaining convex portion 7 extends inward in the radial direction. It is provided to avoid interference with 13.
  • the self-aligning roller bearing 10 has two rows of roller rows C1 and C2 in the circumferential direction, and has an outer ring. It has a structure in which a barrel-shaped spherical roller 13 is incorporated as a rolling element between the 11 and the inner ring 12.
  • the track 11A of the outer ring 11 is a spherical surface
  • the track 12A of the inner ring 12 is a double row. Since the center of curvature of the track 11A of the outer ring 11 and the center of the bearing coincide with each other, the self-aligning roller bearing 10 has self-alignment property with respect to the inclination of the shaft.
  • the single row cage 2A of the cage 1A guides the roller row C1
  • the single row cage 2B of the cage 1A guides the roller row C2.
  • the cage 1A is used in a state where the concave-convex engaging portions A of the pair of single-row cages 2A and 2B are engaged with each other.
  • the concave-convex engaging portion A has, for example, a rectangular wavy shape as shown in (a) and a substantially rectangular wavy shape obtained by chamfering the corners of the rectangular convex portion as shown in (b). It has a trapezoidal wavy shape such as c), a sine wavy shape such as (d), a rounded rectangular wavy shape such as (e), and has a repeating shape in the circumferential direction.
  • the engagement depth D shown in FIG. 5 is from the axial gap of the self-aligning roller bearing 10 in order to reliably engage the uneven engagement portions A of the pair of single row cages 2A and 2B in the used state. Also needs to be large.
  • the concave-convex engaging portion A of the single-row cage 2A and the concave-convex engaging portion A of the single-row cage 2B may have the same shape or different shapes. However, if the concave-convex engaging portion A of the single-row cage 2A and the concave-convex engaging portion A of the single-row cage 2B have the same shape, and the pair of single-row cages 2A and 2B have the same shape, the above-mentioned As you can see, manufacturing costs, parts management costs, etc. can be reduced.
  • the roller rows C1 and C2 in a state where the concave-convex engaging portions A of the single row cages 2A and 2B are engaged with each other may be out of phase as shown in the enlarged expansion view of the main part of FIG. 6A.
  • the phases may be the same as shown in the enlarged development view of the main part.
  • the period of the repeating shape in the circumferential direction of the uneven engagement portion A is shorter than the period of the pocket hole P, and the uneven engagement portion A having the same shape has the same shape. It is also easy to make it possible to change the form in which the phases are different as shown in FIG. 7A and the form in which the phases are the same as shown in FIG. 7B.
  • the uneven engagement portion A is not limited to the repeating shape in the circumferential direction. That is, it is not always necessary to provide both unevenness on each of the pair of single row cages 2A and 2B.
  • one of the pair of single row cages 2A and 2B may be provided with a concave portion and the other may be provided with a convex portion to form the concave-convex engaging portion A.
  • the pair of single row cages 2A and 2B have a concave portion on the large diameter side end surface 3A of one single row cage and a convex portion on the large diameter side end surface 3A of the other single row cage. ..
  • one recess A1 is provided on the large diameter side end surface of one single row cage 2A, and the other single row cage 2B is provided.
  • An example is shown in which one convex portion A2 is provided on the end surface on the large diameter side to form the concave-convex engaging portion A.
  • the single row cage 2A may be provided with only two or more concave portions A1 and the single row cage 2B may be provided with only two or more convex portions A2.
  • the enlarged expansion view of the main part of the partial vertical cross section of FIG. 9 shows an example in which the concave-convex engaging portion A or the connecting body engaging portion B and the connecting body C are provided in place of the concave-convex engaging portion A or the concave portion A1 and the convex portion A2.
  • the partial cross-sectional perspective view of FIG. 10 shows one single row cage 2B and its connecting body engaging portion B.
  • a fitting hole 3B which is a coupling body engaging portion B, is formed on the large-diameter side end surface 3A of the single-row cage 2A, and a coupling body engagement is formed on the large-diameter side end surface 3A of the single-row cage 2B.
  • a fitting hole 3C which is a portion B, is formed.
  • the fitting holes 3B and 3C are provided so as to face each other on, for example, a plurality of pillar portions 5. Fitting holes 3B and 3C may be provided on all the pillars 5.
  • the shaft body 9 which is the connecting body C is fitted into the fitting holes 3B and 3C.
  • the engagement depths E1 and E2 of the portion where the coupling body C is engaged with the coupling body engaging portion B are automatically adjusted in order to reliably integrate the pair of single row cages 2A and 2B in the used state. It is necessary to make it larger than the axial clearance of the core roller bearing 10.
  • the connecting body engaging portion B of the single row cage 2A and the connecting body engaging portion B of the single row cage 2B may have the same shape or different shapes. However, if the connecting body engaging portion B of the single row cage 2A and the connecting body engaging portion B of the single row cage 2B have the same shape, and the pair of single row cages 2A and 2B have the same shape, Manufacturing costs, parts management costs, etc. can be reduced.
  • the self-aligning roller bearing cage 1B according to the embodiment of the present invention shown in the perspective view of FIG. 11 and the exploded perspective view of FIG. 12 is as shown in the perspective view of FIG. 13 and the vertical sectional view of FIG. It is a raceway ring guidance system and consists of a pair of single row cages 2A and 2B.
  • the inner diameter portion 4A of the small diameter ring portions 4 of the single row cages 2A and 2B is in sliding contact with the outer peripheral surface of the inner ring 12 to serve as an inner ring guide.
  • the concave-convex engaging portion A or the concave portion A1 and the convex portion A2 are replaced as shown in the enlarged expansion view of the main part of the partial vertical cross section of FIG.
  • the coupling body engaging portion B and the coupling body C may be provided.
  • the cages 1A and 1B for self-aligning roller bearings include a pair of single row cages 2A and 2B that guide the two rows of roller rows C1 and C2 for each row.
  • the single row cages 2A and 2B have a concave-convex engaging portion A having an engaging depth D larger than the axial clearance of the self-aligning roller bearing 10 on its large-diameter side end surface 3A. Then, it is used in a state where the concave-convex engaging portions A of the pair of single-row cages 2A and 2B are engaged with each other (FIGS. 3 and 13).
  • the pair of single-row cages 2A and 2B are provided with a recess A1 on the large-diameter side end surface 3A of one single-row cage 2A, and a convex portion A1 on the large-diameter side end surface 3A of the other single-row cage 2B.
  • the engagement depth D of the concave-convex engaging portion A with which the concave portion A1 and the convex portion A2 are engaged is made larger than the axial gap of the self-aligning roller bearing 10. Then, it is used in a state where the concave portion A1 and the convex portion A2 are engaged (FIG. 8).
  • the single row cages 2A and 2B have a connecting body engaging portion B having an engaging depth E1 and E2 larger than the axial clearance of the self-aligning roller bearing 10 on its large-diameter side end surface 3A. Then, it is used in a state where the connecting body C is engaged with the connecting body engaging portion B of the pair of single row cages 2A and 2B (FIG. 9). Therefore, in the self-aligning roller bearing cages 1A and 1B according to the embodiment of the present invention, the pair of single row cages 2A and 2B are integrated in the used state.
  • the self-aligning roller bearing cages 1A and 1B according to the embodiment of the present invention are loaded on one of the roller rows C1. At that time, the load is transmitted from one single row cage 2A to the other single row cage 2B, and one roller row C1 and the single row cage 2A and the other roller row C2 and the single row cage 2B are integrated. And rotate. Therefore, the self-aligning roller bearing cages 1A and 1B according to the embodiment of the present invention can equalize the rotation (revolution) of both roller rows C1 and C2.
  • the cages 1A and 1B for self-aligning roller bearings according to the embodiment of the present invention are in the configuration of Patent Document 1 in which the two rows of roller rows C1 and C2 are guided by two separate cages. There is no problem, that is, the problem that the life of the bearing is shortened due to the skewing and fretting of the rollers.
  • the self-aligning roller bearing cages 1A and 1B according to the embodiment of the present invention are composed of a pair of single row cages 2A and 2B, they are held when the self-aligning roller bearing 10 is assembled. Assembling workability is good because it is not necessary to insert the vessels 1A and 1B while elastically deforming them.
  • the self-aligning roller bearing cages 1A and 1B according to the embodiment of the present invention are composed of a pair of single row cages 2A and 2B, they are in the raceway ring guide format as shown in FIGS. 13 and 14. Even if there is, since the cages 1A and 1B can be incorporated into the inner ring 12 from the axial direction, there is also a raceway ring guide type that cannot be adopted by an integrated cage that guides both two rows of roller rows as in Patent Document 2. Can be adopted.

Abstract

[Problem] To provide a self-aligning roller bearing retainer with which the bearing is free from skewing or fretting of rollers reducing the service life thereof and is excellent in assemblability, and which can adopt race guide type as well as roller guide type. [Solution] A retainer 1A is used in a self-aligning roller bearing with two rows of rollers. The retainer comprises a pair of single row retainers 2A, 2B that respectively guide the two rows of rollers. The single row retainers 2A, 2B each have a shape in which a large diameter ring 3 and a small diameter ring 4 are separated from each other in the axial direction and the same are connected via a plurality of pillars 5. A large diameter-side end surface 3A has a corrugated engaging section A with an engaging depth larger than the axial gap of the bearing. The corrugated engaging sections A of the pair of single row retainers 2A, 2B are engaged with each other in use.

Description

自動調心ころ軸受用保持器Cage for self-aligning roller bearings
　本発明は、自動調心ころ軸受に用いる保持器に関する。 The present invention relates to a cage used for a self-aligning roller bearing.
　球面軌道の外輪と複列軌道の内輪との間に転動体として樽状の球面ころを組み込んだ構造を有し、外輪軌道面の曲率中心が軸受中心と一致しているため軸の傾きに対して自動調心性を持つ自動調心ころ軸受がある（例えば、特許文献１及び２参照）。 It has a structure in which a barrel-shaped spherical roller is incorporated as a rolling element between the outer ring of the spherical orbit and the inner ring of the double-row orbit, and the center of curvature of the outer ring orbit surface coincides with the bearing center, so that the inclination of the shaft is increased. There are self-aligning roller bearings with self-alignment (see, for example, Patent Documents 1 and 2).
　自動調心ころ軸受は、１個の軸受でラジアル荷重及び両方向のアキシアル荷重を負荷でき、特にラジアル負荷能力が大きいことから、重荷重や衝撃荷重のかかる使用箇所に適しているため、各種機械装置の駆動部や車軸等に用いられる。 Self-aligning roller bearings can carry radial loads and axial loads in both directions with a single bearing, and because they have a particularly large radial load capacity, they are suitable for places where heavy loads and impact loads are applied. It is used for the drive unit and axles of.
　前記球面ころを案内する保持器として、２列のころ列を各列ごとに個別に案内する２個の保持器を用いるもの（例えば、特許文献１参照）、２列のころ列の両方を案内する一体型の保持器を用いるもの（例えば、特許文献２参照）がある。 As the cage for guiding the spherical rollers, a cage using two cages for individually guiding the two rows of rollers for each row (see, for example, Patent Document 1) guides both of the two rows of rollers. There is one that uses an integrated cage (see, for example, Patent Document 2).
特開２００１－１４０８７５号公報Japanese Unexamined Patent Publication No. 2001-140875 特許第６３３７４８２号公報Japanese Patent No. 6337482
　特許文献１のような自動調心ころ軸受用保持器は、２列のころ列を別体の２個の保持器で個別に案内するので、一方のころ列に負荷がかかった際に、一方の保持器から他方の保持器への負荷の伝達がされず、他方のころ列及び保持器が回転しない場合がある。それにより、ころのスキューやフレッティングが生じて軸受の寿命が低下するという問題がある。 A cage for self-aligning roller bearings as in Patent Document 1 guides two rows of roller rows individually by two separate cages, so that when a load is applied to one of the roller rows, one of them is used. The load may not be transmitted from one of the cages to the other cage and the other roller row and cage may not rotate. As a result, there is a problem that skewing and fretting of rollers occur and the life of the bearing is shortened.
　特許文献２のような自動調心ころ軸受用保持器は、２列のころ列の両方を案内する一体型であるので、特許文献１のように２列のころ列を別体の２個の保持器で案内することに基づく前記問題は生じない。 Since the cage for self-aligning roller bearings as in Patent Document 2 is an integrated type that guides both of the two rows of roller rows, two rows of roller rows are separated as in Patent Document 1. The problem based on guiding with a cage does not occur.
　しかしながら、特許文献２のような２列のころ列の両方を案内する一体型の保持器は、軸受を組み立てる際に、ころ列の一方は、全箇所のころについて、保持器を弾性変形させながら挿入する必要があるので、組立作業性が悪い。 However, in the integrated cage that guides both of the two rows of rollers as in Patent Document 2, when assembling the bearing, one of the roller rows elastically deforms the cage at all the rollers. Assembling workability is poor because it needs to be inserted.
　その上、特許文献２のような２列のころ列の両方を案内する一体型の保持器では、特許文献２に記載された発明の従来技術を示す図６のような外側リム部５ｂのフランジ部９を持つ軌道輪案内方式を採用できない。特許文献２の図６のような軌道輪案内方式である別体の２個の保持器４，４を仮に一体化した場合、当該保持器は、フランジ部９の内径が内輪２の最大径より小さくなるので、内輪２に対して当該保持器を軸方向から組み込めなくなるためである。 Moreover, in an integrated cage that guides both rows of rollers as in Patent Document 2, the flange of the outer rim portion 5b as shown in FIG. 6 showing the prior art of the invention described in Patent Document 2. It is not possible to adopt the raceway ring guidance system having the portion 9. When two separate cages 4 and 4, which are the raceway ring guide system as shown in FIG. 6 of Patent Document 2, are temporarily integrated, the inner diameter of the flange portion 9 of the cage is larger than the maximum diameter of the inner ring 2. This is because the size is so small that the cage cannot be incorporated into the inner ring 2 from the axial direction.
　本発明は、ころのスキューやフレッティングが生じて軸受の寿命が低下することなく、軸受の組立作業性が良く、ころ案内方式だけではなく軌道輪案内方式も採用できる自動調心ころ軸受用保持器を提供すること目的とする。 INDUSTRIAL APPLICABILITY According to the present invention, bearing assembly workability is good without causing roller skew or fretting and shortening the bearing life, and holding for self-aligning roller bearings that can adopt not only roller guidance method but also raceway ring guidance method. The purpose is to provide a vessel.
　本発明の要旨は以下の通りである。 The gist of the present invention is as follows.
　〔１〕
　２列のころ列を有する自動調心ころ軸受に用いる保持器であって、
　前記２列のころ列を各列ごとに案内する一対の単列保持器からなり、
　前記単列保持器は、
　　軸方向に離間した大径リング部及び小径リング部を複数の柱部により繋いだ形状を成し、
　　大径側端面に、前記軸受の軸方向隙間よりも大きい係合深さを有する凹凸係合部を設け、又は、
　　一方の前記単列保持器の大径側端面に凹部を設けるとともに、他方の前記単列保持器の大径側端面に凸部を設けて、前記凹部及び前記凸部が係合する凹凸係合部の係合深さを前記軸受の軸方向隙間よりも大きくし、
　一対の前記単列保持器の前記凹凸係合部同士を係合させた状態、又は前記凹部及び前記凸部を係合させた状態で使用することを特徴とする、
自動調心ころ軸受用保持器。 [1]
A cage used for self-aligning roller bearings having two rows of rollers.
It consists of a pair of single row cages that guide the two rows of rollers for each row.
The single row cage is
The large-diameter ring portion and the small-diameter ring portion separated in the axial direction are connected by a plurality of pillar portions to form a shape.
An uneven engagement portion having an engagement depth larger than the axial gap of the bearing is provided on the end face on the large diameter side, or
A concave portion is provided on the large-diameter side end surface of one of the single-row cages, and a convex portion is provided on the large-diameter side end surface of the other single-row holder, so that the concave portion and the convex portion engage with each other. The engagement depth of the portion is made larger than the axial gap of the bearing.
It is characterized in that it is used in a state where the concave-convex engaging portions of the pair of single-row cages are engaged with each other, or in a state where the concave portions and the convex portions are engaged with each other.
Cage for self-aligning roller bearings.
　〔２〕
　２列のころ列を有する自動調心ころ軸受に用いる保持器であって、
　前記２列のころ列を各列ごとに案内する一対の単列保持器からなり、
　前記単列保持器は、
　　軸方向に離間した大径リング部及び小径リング部を複数の柱部により繋いだ形状を成し、
　　大径側端面に、前記軸受の軸方向隙間よりも大きい係合深さを有する連結体係合部を有し、
　一対の前記単列保持器の前記連結体係合部に連結体を係合させた状態で使用することを特徴とする、
自動調心ころ軸受用保持器。 [2]
A cage used for self-aligning roller bearings having two rows of rollers.
It consists of a pair of single row cages that guide the two rows of rollers for each row.
The single row cage is
The large-diameter ring portion and the small-diameter ring portion separated in the axial direction are connected by a plurality of pillar portions to form a shape.
The large-diameter side end face has a connecting body engaging portion having an engaging depth larger than the axial gap of the bearing.
It is characterized in that it is used in a state where the connecting body is engaged with the connecting body engaging portion of the pair of the single row cages.
Cage for self-aligning roller bearings.
　〔３〕
　前記連結体係合部は、嵌合穴であり、
　前記連結体は、前記嵌合穴に嵌合する軸体である、
〔２〕に記載の自動調心ころ軸受用保持器。 [3]
The connecting body engaging portion is a fitting hole and has a fitting hole.
The connecting body is a shaft body that fits into the fitting hole.
The cage for self-aligning roller bearings according to [2].
　〔４〕
　一対の前記単列保持器は、同一形状である、
〔１〕～〔３〕の何れかに記載の自動調心ころ軸受用保持器。 [4]
The pair of single row cages has the same shape.
The cage for self-aligning roller bearings according to any one of [1] to [3].
　〔５〕
　軌道輪案内方式である、
〔１〕～〔４〕の何れかに記載の自動調心ころ軸受用保持器。 [5]
It is a track ring guidance system,
The cage for self-aligning roller bearings according to any one of [1] to [4].
　本発明に係る自動調心ころ軸受用保持器は、前記のとおり、２列のころ列を各列ごとに案内する一対の単列保持器からなる。前記単列保持器は、その大径側端面に、自動調心ころ軸受の軸方向隙間よりも大きい係合深さを有する凹凸係合部を有する。そして、一対の前記単列保持器の前記凹凸係合部同士を係合させた状態で使用する。あるいは、前記一対の単列保持器は、一方の前記単列保持器の大径側端面に凹部を設けるとともに、他方の前記単列保持器の大径側端面に凸部を設けて、前記凹部及び前記凸部が係合する凹凸係合部の係合深さを前記軸受の軸方向隙間よりも大きくしている。そして、前記凹部及び前記凸部を係合させた状態で使用する。あるいは、前記単列保持器は、その大径側端面に、自動調心ころ軸受の軸方向隙間よりも大きい係合深さを有する連結体係合部を有する。そして、一対の前記単列保持器の前記連結体係合部に連結体を係合させた状態で使用する。したがって、本発明に係る自動調心ころ軸受用保持器において、一対の前記単列保持器は使用状態で一体となる。 As described above, the cage for self-aligning roller bearings according to the present invention comprises a pair of single row cages that guide two rows of roller rows for each row. The single row cage has a concave-convex engaging portion having an engaging depth larger than the axial clearance of the self-aligning roller bearing on its large-diameter side end surface. Then, it is used in a state where the uneven engaging portions of the pair of single row cages are engaged with each other. Alternatively, the pair of single-row cages are provided with a concave portion on the large-diameter side end surface of one of the single-row cages and a convex portion on the large-diameter side end surface of the other single-row cage. The engagement depth of the concave-convex engaging portion with which the convex portion engages is made larger than the axial gap of the bearing. Then, it is used in a state where the concave portion and the convex portion are engaged with each other. Alternatively, the single row cage has a coupling engaging portion having a larger engaging depth than the axial clearance of the self-aligning roller bearing on its large diameter side end face. Then, it is used in a state where the connecting body is engaged with the connecting body engaging portion of the pair of the single row cages. Therefore, in the cage for self-aligning roller bearings according to the present invention, the pair of the single row cages are integrated in the used state.
　一対の前記単列保持器が使用状態で一体となることから、本発明に係る自動調心ころ軸受用保持器は、一方のころ列に負荷がかかった際に、一方の前記単列保持器から他方の前記単列保持器へ負荷が伝達され、一方のころ列及び前記単列保持器と他方のころ列及び前記単列保持器は一体となって回転する。したがって、本発明に係る自動調心ころ軸受用保持器は、両方のころ列の回転（公転）を均等化できる。それにより、本発明に係る自動調心ころ軸受用保持器は、２列のころ列を別体の２個の保持器で案内する特許文献１の構成における問題、すなわち、ころのスキューやフレッティングが生じて軸受の寿命が低下するという問題が生じない。 Since the pair of the single row cages are integrated in the used state, the cage for the self-aligning roller bearing according to the present invention is one of the single row cages when a load is applied to one of the roller rows. The load is transmitted from to the other single row cage, and one roller row and the single row cage and the other roller row and the single row cage rotate together. Therefore, the cage for self-aligning roller bearings according to the present invention can equalize the rotation (revolution) of both roller rows. As a result, the cage for self-aligning roller bearings according to the present invention has a problem in the configuration of Patent Document 1 in which two rows of rollers are guided by two separate cages, that is, roller skewing and fretting. There is no problem that the life of the bearing is shortened.
　また、本発明に係る自動調心ころ軸受用保持器は、一対の前記単列保持器により構成されるため、自動調心ころ軸受を組み立てる際に、保持器を弾性変形させながら挿入する必要がないので、組立作業性が良い。 Further, since the cage for the self-aligning roller bearing according to the present invention is composed of the pair of the single row cages, it is necessary to insert the cage while elastically deforming the cage when assembling the self-aligning roller bearing. As there is no bearing, assembly workability is good.
　さらに、本発明に係る自動調心ころ軸受用保持器は、一対の前記単列保持器からなることから、軌道輪案内形式であっても内輪に対して当該保持器を軸方向から組み込めるので、特許文献２のような２列のころ列の両方を案内する一体型の保持器では採用できない軌道輪案内形式も採用できる。 Further, since the cage for the self-aligning roller bearing according to the present invention is composed of the pair of the single row cages, the cage can be incorporated into the inner ring from the axial direction even in the raceway ring guide type. A raceway ring guide type that cannot be adopted by an integrated cage that guides both two rows of rollers as in Patent Document 2 can also be adopted.
本発明の実施の形態に係るころ案内方式の自動調心ころ軸受用保持器の斜視図である。It is a perspective view of the cage for the self-aligning roller bearing of the roller guide type which concerns on embodiment of this invention. 前記保持器の分解斜視図である。It is an exploded perspective view of the cage. 前記保持器を用いた自動調心ころ軸受の斜視図である。It is a perspective view of the self-aligning roller bearing using the cage. 前記自動調心ころ軸受の縦断面図である。It is a vertical sectional view of the self-aligning roller bearing. 前記自動調心ころ軸受の縦断面斜視図である。It is a vertical sectional perspective view of the self-aligning roller bearing. 凹凸係合部の形状の例（ａ）ないし（ｅ）を示す要部拡大展開図である。It is an enlarged expansion view of the main part which shows the example (a) to (e) of the shape of the concave-convex engagement part. ２列のころ列の位相を異ならせた例を示す要部拡大展開図である。It is an enlarged expansion view of the main part which shows the example which made the phase of two rows of roller rows different. ２列のころ列の位相を同じにした例を示す要部拡大展開図である。It is the main part enlarged development view which shows the example which made the phase of two rows of roller rows the same. ２列のころ列の位相を異ならせた例を示す要部拡大展開図である。It is an enlarged expansion view of the main part which shows the example which made the phase of two rows of roller rows different. ２列のころ列の位相を同じにした例を示す要部拡大展開図である。It is the main part enlarged development view which shows the example which made the phase of two rows of roller rows the same. 一対の単列保持器において、一方の単列保持器に凹部を１つ設けるとともに、他方の単列保持器に凸部を１つ設けた例を示す要部拡大展開図である。FIG. 5 is an enlarged expansion view of a main part showing an example in which one concave portion is provided in one single row cage and one convex portion is provided in the other single row cage in a pair of single row cages. 連結体係合部及び連結体の一例を示す部分縦断面要部拡大展開図である。It is a partial vertical cross-section main part enlarged development view which shows an example of a connecting body engaging part and a connecting body. 一方の単列保持器、及びその連結体係合部を示す部分断面斜視図である。It is a partial cross-sectional perspective view which shows one single row cage, and the coupling part engaging part thereof. 本発明の実施の形態に係る軌道輪案内方式の自動調心ころ軸受用保持器の斜視図である。It is a perspective view of the cage for the self-aligning roller bearing of the raceway ring guide type which concerns on embodiment of this invention. 前記保持器の分解斜視図である。It is an exploded perspective view of the cage. 前記保持器を用いた自動調心ころ軸受の斜視図である。It is a perspective view of the self-aligning roller bearing using the cage. 前記自動調心ころ軸受の縦断面図である。It is a vertical sectional view of the self-aligning roller bearing.
　以下、本発明に係る実施の形態を図面に基づいて説明する。 Hereinafter, embodiments according to the present invention will be described with reference to the drawings.
　本明細書において、自動調心ころ軸受１０の回転軸Ｊ（図４Ａ及び図１４参照）の方向を「軸方向」、軸方向に直交し、回転軸Ｊから遠ざかる方向を「径方向」、ころ列Ｃ１又はＣ２（図４Ａ及び図４Ｂ、並びに図１４参照）のころ１３が並ぶ方向を「周方向」という。 In the present specification, the direction of the rotation axis J (see FIGS. 4A and 14) of the self-aligning roller bearing 10 is "axial direction", the direction orthogonal to the axis direction is "diametrical direction", and the direction away from the rotation axis J is "radial direction". The direction in which the rollers 13 are lined up in rows C1 or C2 (see FIGS. 4A and 4B, and FIG. 14) is referred to as "circumferential direction".
＜ころ案内方式の自動調心ころ軸受用保持器＞
　図１の斜視図、及び図２の分解斜視図に示す本発明の実施の形態に係る自動調心ころ軸受用保持器１Ａは、図３の斜視図、図４Ａの縦断面図、及び図４Ｂの縦断面斜視図に示すようにころ案内方式であり、一対の単列保持器２Ａ，２Ｂからなる。単列保持器２Ａ，２Ｂは、鋼板のプレス加工、合成樹脂の射出成形、又は金属若しくは合成樹脂の削り加工で製造できる。 <Roll guide type self-aligning roller bearing cage>
The self-aligning roller bearing cage 1A according to the embodiment of the present invention shown in the perspective view of FIG. 1 and the exploded perspective view of FIG. 2 has a perspective view of FIG. 3, a vertical sectional view of FIG. 4A, and FIG. 4B. As shown in the vertical cross-sectional perspective view of the above, it is a roller guide system and consists of a pair of single row cages 2A and 2B. The single row cages 2A and 2B can be manufactured by stamping a steel plate, injection molding a synthetic resin, or shaving a metal or a synthetic resin.
　一対の単列保持器２Ａ，２Ｂは、例えば同一形状であるが、異なる形状であってもよい。ただし、一対の単列保持器２Ａ，２Ｂを同一形状にすることにより、製造コスト及び部品管理コスト等を低減できる。 The pair of single row cages 2A and 2B have, for example, the same shape, but may have different shapes. However, by making the pair of single row cages 2A and 2B the same shape, it is possible to reduce the manufacturing cost, the parts management cost, and the like.
　単列保持器２Ａ，２Ｂは、軸方向に離間した大径リング部３及び小径リング部４を複数の柱部５により繋いだ形状を成す。単列保持器２Ａ，２Ｂには、球面ころ１３（例えば図３及び図４Ａ参照）を収容する複数のポケット孔Ｐが周方向に等間隔に形成される。単列保持器２Ａ，２Ｂは、大径側端面３Ａに凹凸係合部Ａを有する。 The single- row cages 2A and 2B have a shape in which a large-diameter ring portion 3 and a small-diameter ring portion 4 separated in the axial direction are connected by a plurality of pillar portions 5. In the single row cages 2A and 2B, a plurality of pocket holes P for accommodating spherical rollers 13 (see, for example, FIGS. 3 and 4A) are formed at equal intervals in the circumferential direction. The single row cages 2A and 2B have a concave-convex engaging portion A on the large-diameter side end surface 3A.
　柱部５のポケット孔Ｐ側の側面は、球面ころ１３の案内面である案内面６、球面ころ１３の外径方向への抜け止めである抜止め凸部７、及び窪み部８からなる。抜止め凸部７の径方向内方の窪み部８は、抜止め凸部７が径方向内方まで延びていると球面ころ１３（例えば図３及び図４Ａ参照）と干渉するため、球面ころ１３との干渉を回避するために設けている。 The side surface of the pillar portion 5 on the pocket hole P side is composed of a guide surface 6 which is a guide surface of the spherical roller 13, a retaining convex portion 7 which is a retaining convex portion 7 which prevents the spherical roller 13 from coming off in the outer diameter direction, and a recessed portion 8. The concave portion 8 inward in the radial direction of the retaining convex portion 7 interferes with the spherical roller 13 (see, for example, FIGS. 3 and 4A) when the retaining convex portion 7 extends inward in the radial direction. It is provided to avoid interference with 13.
＜自動調心ころ軸受＞
　図３の斜視図、図４Ａの縦断面図、及び図４Ｂの縦断面斜視図に示すように、自動調心ころ軸受１０は、２列の周方向のころ列Ｃ１，Ｃ２を有し、外輪１１と内輪１２との間に転動体として樽状の球面ころ１３を組み込んだ構造を有する。外輪１１の軌道１１Ａは球面であり、内輪１２の軌道１２Ａは複列である。自動調心ころ軸受１０は、外輪１1の軌道１１Ａの曲率中心と軸受中心とが一致しているため、軸の傾きに対して自動調心性を持つ。 <Self-aligning roller bearing>
As shown in the perspective view of FIG. 3, the vertical sectional view of FIG. 4A, and the vertical sectional perspective view of FIG. 4B, the self-aligning roller bearing 10 has two rows of roller rows C1 and C2 in the circumferential direction, and has an outer ring. It has a structure in which a barrel-shaped spherical roller 13 is incorporated as a rolling element between the 11 and the inner ring 12. The track 11A of the outer ring 11 is a spherical surface, and the track 12A of the inner ring 12 is a double row. Since the center of curvature of the track 11A of the outer ring 11 and the center of the bearing coincide with each other, the self-aligning roller bearing 10 has self-alignment property with respect to the inclination of the shaft.
　図４Ａ及び図４Ｂに示す使用状態で、保持器１Ａの単列保持器２Ａは、ころ列Ｃ１を案内し、保持器１Ａの単列保持器２Ｂは、ころ列Ｃ２を案内する。保持器１Ａは、図１、図３及び図４Ａのように、一対の単列保持器２Ａ，２Ｂの凹凸係合部Ａ同士を係合させた状態で使用する。 In the usage state shown in FIGS. 4A and 4B, the single row cage 2A of the cage 1A guides the roller row C1, and the single row cage 2B of the cage 1A guides the roller row C2. As shown in FIGS. 1, 3 and 4A, the cage 1A is used in a state where the concave-convex engaging portions A of the pair of single- row cages 2A and 2B are engaged with each other.
＜凹凸係合部の形状＞
　図５の展開図に示すように、凹凸係合部Ａは、例えば、（ａ）のような矩形波状、（ｂ）のような矩形状の凸部の角部を面取りした略矩形波状、（ｃ）のような台形波状、（ｄ）のような正弦波状、（ｅ）のような丸みを帯びた矩形波状等であり、周方向の繰り返し形状を有する。図５に示す係合深さＤは、一対の単列保持器２Ａ，２Ｂの凹凸係合部Ａ同士を使用状態で確実に係合させるために、自動調心ころ軸受１０の軸方向隙間よりも大きくする必要がある。 <Shape of uneven engagement part>
As shown in the developed view of FIG. 5, the concave-convex engaging portion A has, for example, a rectangular wavy shape as shown in (a) and a substantially rectangular wavy shape obtained by chamfering the corners of the rectangular convex portion as shown in (b). It has a trapezoidal wavy shape such as c), a sine wavy shape such as (d), a rounded rectangular wavy shape such as (e), and has a repeating shape in the circumferential direction. The engagement depth D shown in FIG. 5 is from the axial gap of the self-aligning roller bearing 10 in order to reliably engage the uneven engagement portions A of the pair of single row cages 2A and 2B in the used state. Also needs to be large.
　単列保持器２Ａの凹凸係合部Ａと単列保持器２Ｂの凹凸係合部Ａは、同一の形状であっても、異なる形状であってもよい。ただし、単列保持器２Ａの凹凸係合部Ａと単列保持器２Ｂの凹凸係合部Ａとを同一形状にして、一対の単列保持器２Ａ，２Ｂを同一形状にすれば、前記のとおり、製造コスト及び部品管理コスト等を低減できる。 The concave-convex engaging portion A of the single-row cage 2A and the concave-convex engaging portion A of the single-row cage 2B may have the same shape or different shapes. However, if the concave-convex engaging portion A of the single-row cage 2A and the concave-convex engaging portion A of the single-row cage 2B have the same shape, and the pair of single- row cages 2A and 2B have the same shape, the above-mentioned As you can see, manufacturing costs, parts management costs, etc. can be reduced.
　単列保持器２Ａ，２Ｂの凹凸係合部Ａ同士を係合させた状態におけるころ列Ｃ１，Ｃ２は、図６Ａの要部拡大展開図のように位相を異ならせてもよく、図６Ｂの要部拡大展開図のように位相を同じにしてもよい。 The roller rows C1 and C2 in a state where the concave-convex engaging portions A of the single row cages 2A and 2B are engaged with each other may be out of phase as shown in the enlarged expansion view of the main part of FIG. 6A. The phases may be the same as shown in the enlarged development view of the main part.
　図７Ａ及び図７Ｂの要部拡大展開図に示すように、凹凸係合部Ａの周方向の繰り返し形状の周期をポケット孔Ｐの周期よりも短くし、同一形状の凹凸係合部Ａで、図７Ａのように位相を異ならせた形態と、図７Ｂのように位相を同じにした形態とを変更可能にすることも容易である。 As shown in the enlarged expansion view of the main part of FIGS. 7A and 7B, the period of the repeating shape in the circumferential direction of the uneven engagement portion A is shorter than the period of the pocket hole P, and the uneven engagement portion A having the same shape has the same shape. It is also easy to make it possible to change the form in which the phases are different as shown in FIG. 7A and the form in which the phases are the same as shown in FIG. 7B.
　凹凸係合部Ａは、周方向の繰り返し形状に限定されない。すなわち、一対の単列保持器２Ａ，２Ｂの各々に必ずしも凹凸の両方を設ける必要はない。例えば、一対の単列保持器２Ａ，２Ｂの一方に凹部を設けるとともに他方に凸部を設けて凹凸係合部Ａとしてもよい。その場合は、一対の単列保持器２Ａ，２Ｂは、一方の単列保持器の大径側端面３Ａに凹部を有し、他方の単列保持器の大径側端面３Ａに凸部を有する。 The uneven engagement portion A is not limited to the repeating shape in the circumferential direction. That is, it is not always necessary to provide both unevenness on each of the pair of single row cages 2A and 2B. For example, one of the pair of single row cages 2A and 2B may be provided with a concave portion and the other may be provided with a convex portion to form the concave-convex engaging portion A. In that case, the pair of single row cages 2A and 2B have a concave portion on the large diameter side end surface 3A of one single row cage and a convex portion on the large diameter side end surface 3A of the other single row cage. ..
　図８の要部拡大展開図は、一対の単列保持器２Ａ，２Ｂにおいて、一方の単列保持器２Ａの大径側端面に凹部Ａ１を１つ設けるとともに、他方の単列保持器２Ｂの大径側端面に凸部Ａ２を１つ設けて凹凸係合部Ａとした例を示している。単列保持器２Ａに凹部Ａ１のみを２つ以上、単列保持器２Ｂに凸部Ａ２のみを２つ以上設けてもよい。図８に示す凹部Ａ１及び凸部Ａ２が係合する凹凸係合部Ａの係合深さＤは、一対の単列保持器２Ａ，２Ｂにおいて、単列保持器２Ａの凹部Ａ１及び単列保持器２Ｂの凸部Ａ２を使用状態で確実に係合させるために、自動調心ころ軸受１０の軸方向隙間よりも大きくする必要がある。 In the enlarged expansion view of the main part of FIG. 8, in the pair of single row cages 2A and 2B, one recess A1 is provided on the large diameter side end surface of one single row cage 2A, and the other single row cage 2B is provided. An example is shown in which one convex portion A2 is provided on the end surface on the large diameter side to form the concave-convex engaging portion A. The single row cage 2A may be provided with only two or more concave portions A1 and the single row cage 2B may be provided with only two or more convex portions A2. The engagement depth D of the concave-convex engaging portion A with which the concave portion A1 and the convex portion A2 shown in FIG. 8 is such that the concave portion A1 and the single-row holding of the single-row cage 2A are held in the pair of single- row cages 2A and 2B. In order to securely engage the convex portion A2 of the vessel 2B in the used state, it is necessary to make it larger than the axial clearance of the self-aligning roller bearing 10.
　図９の部分縦断面要部拡大展開図は、凹凸係合部Ａ、又は凹部Ａ１及び凸部Ａ２に替えて連結体係合部Ｂ及び連結体Ｃを備えた例を示している。図１０の部分断面斜視図は、一方の単列保持器２Ｂ、及びその連結体係合部Ｂを示している。 The enlarged expansion view of the main part of the partial vertical cross section of FIG. 9 shows an example in which the concave-convex engaging portion A or the connecting body engaging portion B and the connecting body C are provided in place of the concave-convex engaging portion A or the concave portion A1 and the convex portion A2. The partial cross-sectional perspective view of FIG. 10 shows one single row cage 2B and its connecting body engaging portion B.
　単列保持器２Ａの大径側端面３Ａには、連結体係合部Ｂである嵌合穴３Ｂが形成されており、単列保持器２Ｂの大径側端面３Ａには、連結体係合部Ｂである嵌合穴３Ｃが形成されている。嵌合穴３Ｂ，３Ｃは、例えば複数の柱部５上に対向させて設ける。嵌合穴３Ｂ，３Ｃを全ての柱部５上に設けてもよい。 A fitting hole 3B, which is a coupling body engaging portion B, is formed on the large-diameter side end surface 3A of the single-row cage 2A, and a coupling body engagement is formed on the large-diameter side end surface 3A of the single-row cage 2B. A fitting hole 3C, which is a portion B, is formed. The fitting holes 3B and 3C are provided so as to face each other on, for example, a plurality of pillar portions 5. Fitting holes 3B and 3C may be provided on all the pillars 5.
　嵌合穴３Ｂ，３Ｃには、連結体Ｃである軸体９が嵌合する。連結体係合部Ｂに連結体Ｃが係合している部分の係合深さＥ１，Ｅ２は、一対の単列保持器２Ａ，２Ｂを使用状態で確実に一体化するために、自動調心ころ軸受１０の軸方向隙間よりも大きくする必要がある。 The shaft body 9 which is the connecting body C is fitted into the fitting holes 3B and 3C. The engagement depths E1 and E2 of the portion where the coupling body C is engaged with the coupling body engaging portion B are automatically adjusted in order to reliably integrate the pair of single row cages 2A and 2B in the used state. It is necessary to make it larger than the axial clearance of the core roller bearing 10.
　単列保持器２Ａの連結体係合部Ｂと単列保持器２Ｂの連結体係合部Ｂは、同一の形状であっても、異なる形状であってもよい。ただし、単列保持器２Ａの連結体係合部Ｂと単列保持器２Ｂの連結体係合部Ｂとを同一形状にして、一対の単列保持器２Ａ，２Ｂを同一形状にすれば、製造コスト及び部品管理コスト等を低減できる。 The connecting body engaging portion B of the single row cage 2A and the connecting body engaging portion B of the single row cage 2B may have the same shape or different shapes. However, if the connecting body engaging portion B of the single row cage 2A and the connecting body engaging portion B of the single row cage 2B have the same shape, and the pair of single row cages 2A and 2B have the same shape, Manufacturing costs, parts management costs, etc. can be reduced.
＜軌道輪案内方式の自動調心ころ軸受用保持器＞
　図１１の斜視図、及び図１２の分解斜視図に示す本発明の実施の形態に係る自動調心ころ軸受用保持器１Ｂは、図１３の斜視図、及び図１４の縦断面図に示すように軌道輪案内方式であり、一対の単列保持器２Ａ，２Ｂからなる。図１４の縦断面図においては、単列保持器２Ａ，２Ｂの小径リング部４の内径部４Ａが、内輪１２の外周面に摺接して内輪案内となっている。 <Cage for self-aligning roller bearings with raceway wheel guidance>
The self-aligning roller bearing cage 1B according to the embodiment of the present invention shown in the perspective view of FIG. 11 and the exploded perspective view of FIG. 12 is as shown in the perspective view of FIG. 13 and the vertical sectional view of FIG. It is a raceway ring guidance system and consists of a pair of single row cages 2A and 2B. In the vertical cross-sectional view of FIG. 14, the inner diameter portion 4A of the small diameter ring portions 4 of the single row cages 2A and 2B is in sliding contact with the outer peripheral surface of the inner ring 12 to serve as an inner ring guide.
　図１１ないし図１４に示す自動調心ころ軸受用保持器１Ｂにおいて、図１ないし図４Ｂに示す自動調心ころ軸受用保持器１Ａと同一符号は、同一又は相当する部品又は部分を示している。したがって、図１ないし図４Ｂと同一符号の部品又は部分についての説明は省略する。 In the self-aligning roller bearing cage 1B shown in FIGS. 11 to 14, the same reference numerals as those of the self-aligning roller bearing cage 1A shown in FIGS. 1 to 4B indicate the same or corresponding parts or parts. .. Therefore, the description of the parts or parts having the same reference numerals as those in FIGS. 1 to 4B will be omitted.
　このような軌道輪案内方式の自動調心ころ軸受用保持器１Ｂにおいても、図９の部分縦断面要部拡大展開図のように、凹凸係合部Ａ、又は凹部Ａ１及び凸部Ａ２に替えて連結体係合部Ｂ及び連結体Ｃを備えてもよい。 Even in the cage 1B for the self-aligning roller bearing of the raceway ring guide type, the concave-convex engaging portion A or the concave portion A1 and the convex portion A2 are replaced as shown in the enlarged expansion view of the main part of the partial vertical cross section of FIG. The coupling body engaging portion B and the coupling body C may be provided.
＜作用効果＞
　本発明の実施の形態に係る自動調心ころ軸受用保持器１Ａ，１Ｂは、２列のころ列Ｃ１，Ｃ２を各列ごとに案内する一対の単列保持器２Ａ，２Ｂからなる。単列保持器２Ａ，２Ｂは、その大径側端面３Ａに、自動調心ころ軸受１０の軸方向隙間よりも大きい係合深さＤを有する凹凸係合部Ａを有する。そして、一対の単列保持器２Ａ，２Ｂの凹凸係合部Ａ同士を係合させた状態で使用する（図３，図１３）。あるいは、一対の単列保持器２Ａ，２Ｂは、一方の単列保持器２Ａの大径側端面３Ａに凹部Ａ１を設けるとともに、他方の単列保持器２Ｂの大径側端面３Ａに凸部Ａ１を設けて、凹部Ａ１及び凸部Ａ２が係合する凹凸係合部Ａの係合深さＤを自動調心ころ軸受１０の軸方向隙間よりも大きくしている。そして、凹部Ａ１及び凸部Ａ２を係合させた状態で使用する（図８）。あるいは、単列保持器２Ａ，２Ｂは、その大径側端面３Ａに、自動調心ころ軸受１０の軸方向隙間よりも大きい係合深さＥ１，Ｅ２を有する連結体係合部Ｂを有する。そして、一対の単列保持器２Ａ，２Ｂの連結体係合部Ｂに連結体Ｃを係合させた状態で使用する（図９）。したがって、本発明の実施の形態に係る自動調心ころ軸受用保持器１Ａ，１Ｂにおいて、一対の単列保持器２Ａ，２Ｂは使用状態で一体となる。 <Action effect>
The cages 1A and 1B for self-aligning roller bearings according to the embodiment of the present invention include a pair of single row cages 2A and 2B that guide the two rows of roller rows C1 and C2 for each row. The single row cages 2A and 2B have a concave-convex engaging portion A having an engaging depth D larger than the axial clearance of the self-aligning roller bearing 10 on its large-diameter side end surface 3A. Then, it is used in a state where the concave-convex engaging portions A of the pair of single- row cages 2A and 2B are engaged with each other (FIGS. 3 and 13). Alternatively, the pair of single- row cages 2A and 2B are provided with a recess A1 on the large-diameter side end surface 3A of one single-row cage 2A, and a convex portion A1 on the large-diameter side end surface 3A of the other single-row cage 2B. The engagement depth D of the concave-convex engaging portion A with which the concave portion A1 and the convex portion A2 are engaged is made larger than the axial gap of the self-aligning roller bearing 10. Then, it is used in a state where the concave portion A1 and the convex portion A2 are engaged (FIG. 8). Alternatively, the single row cages 2A and 2B have a connecting body engaging portion B having an engaging depth E1 and E2 larger than the axial clearance of the self-aligning roller bearing 10 on its large-diameter side end surface 3A. Then, it is used in a state where the connecting body C is engaged with the connecting body engaging portion B of the pair of single row cages 2A and 2B (FIG. 9). Therefore, in the self-aligning roller bearing cages 1A and 1B according to the embodiment of the present invention, the pair of single row cages 2A and 2B are integrated in the used state.
　一対の単列保持器２Ａ，２Ｂが使用状態で一体となることから、本発明の実施の形態に係る自動調心ころ軸受用保持器１Ａ，１Ｂは、一方のころ列Ｃ１に負荷がかかった際に、一方の単列保持器２Ａから他方の単列保持器２Ｂへ負荷が伝達され、一方のころ列Ｃ１及び単列保持器２Ａと他方のころ列Ｃ２及び単列保持器２Ｂは一体となって回転する。したがって、本発明の実施の形態に係る自動調心ころ軸受用保持器１Ａ，１Ｂは、両方のころ列Ｃ１，Ｃ２の回転（公転）を均等化できる。それにより、本発明の実施の形態に係る自動調心ころ軸受用保持器１Ａ，１Ｂは、２列のころ列Ｃ１，Ｃ２を別体の２個の保持器で案内する特許文献１の構成における問題、すなわち、ころのスキューやフレッティングが生じて軸受の寿命が低下するという問題が生じない。 Since the pair of single row cages 2A and 2B are integrated in the used state, the self-aligning roller bearing cages 1A and 1B according to the embodiment of the present invention are loaded on one of the roller rows C1. At that time, the load is transmitted from one single row cage 2A to the other single row cage 2B, and one roller row C1 and the single row cage 2A and the other roller row C2 and the single row cage 2B are integrated. And rotate. Therefore, the self-aligning roller bearing cages 1A and 1B according to the embodiment of the present invention can equalize the rotation (revolution) of both roller rows C1 and C2. Thereby, the cages 1A and 1B for self-aligning roller bearings according to the embodiment of the present invention are in the configuration of Patent Document 1 in which the two rows of roller rows C1 and C2 are guided by two separate cages. There is no problem, that is, the problem that the life of the bearing is shortened due to the skewing and fretting of the rollers.
　また、本発明の実施の形態に係る自動調心ころ軸受用保持器１Ａ，１Ｂは、一対の単列保持器２Ａ，２Ｂにより構成されるため、自動調心ころ軸受１０を組み立てる際に、保持器１Ａ，１Ｂを弾性変形させながら挿入する必要がないので、組立作業性が良い。 Further, since the self-aligning roller bearing cages 1A and 1B according to the embodiment of the present invention are composed of a pair of single row cages 2A and 2B, they are held when the self-aligning roller bearing 10 is assembled. Assembling workability is good because it is not necessary to insert the vessels 1A and 1B while elastically deforming them.
　さらに、本発明の実施の形態に係る自動調心ころ軸受用保持器１Ａ，１Ｂは、一対の単列保持器２Ａ，２Ｂからなることから、図１３及び図１４のような軌道輪案内形式であっても内輪１２に対して当該保持器１Ａ，１Ｂを軸方向から組み込めるので、特許文献２のような２列のころ列の両方を案内する一体型の保持器では採用できない軌道輪案内形式も採用できる。 Further, since the self-aligning roller bearing cages 1A and 1B according to the embodiment of the present invention are composed of a pair of single row cages 2A and 2B, they are in the raceway ring guide format as shown in FIGS. 13 and 14. Even if there is, since the cages 1A and 1B can be incorporated into the inner ring 12 from the axial direction, there is also a raceway ring guide type that cannot be adopted by an integrated cage that guides both two rows of roller rows as in Patent Document 2. Can be adopted.
　以上の実施の形態の記載はすべて例示であり、これに制限されるものではない。本発明の範囲から逸脱することなく種々の改良及び変更を施すことができる。 The above descriptions of the embodiments are all examples and are not limited thereto. Various improvements and changes can be made without departing from the scope of the present invention.
１Ａ，１Ｂ　自動調心ころ軸受用保持器
２Ａ，２Ｂ　単列保持器
３　大径リング部
３Ａ　大径側端面
３Ｂ，３Ｃ　嵌合穴
４　小径リング部
４Ａ　内径部
５　柱部
６　案内面
７　抜止め凸部
８　窪み部
９　軸体
１０　自動調心ころ軸受
１１　外輪
１１Ａ　軌道
１２　内輪
１２Ａ　軌道
１３　球面ころ
Ａ　凹凸係合部
Ａ１　凹部
Ａ２　凸部
Ｂ　連結体係合部
Ｃ　連結体
Ｃ１，Ｃ２　ころ列
Ｄ，Ｅ１，Ｅ２　係合深さ
Ｊ　回転軸
Ｐ　ポケット孔 1A, 1B Self-aligning roller bearing cage 2A, 2B Single row cage 3 Large diameter ring part 3A Large diameter side end surface 3B, 3C Fitting hole 4 Small diameter ring part 4A Inner diameter part 5 Pillar part 6 Guide surface 7 Convex part 8 Recessed part 9 Shaft body 10 Self-aligning roller bearing 11 Outer ring 11A Track 12 Inner ring 12A Track 13 Spherical roller A Concavo-convex engaging part A1 Recessed part A2 Convex part B Connecting body engaging part C Connecting body C1, C2 Roller row D , E1, E2 Engagement depth J Rotating shaft P Pocket hole

Claims (5)

  1. 　２列のころ列を有する自動調心ころ軸受に用いる保持器であって、
    　前記２列のころ列を各列ごとに案内する一対の単列保持器からなり、
    　前記単列保持器は、
    　　軸方向に離間した大径リング部及び小径リング部を複数の柱部により繋いだ形状を成し、
    　　大径側端面に、前記軸受の軸方向隙間よりも大きい係合深さを有する凹凸係合部を設け、又は、
    　　一方の前記単列保持器の大径側端面に凹部を設けるとともに、他方の前記単列保持器の大径側端面に凸部を設けて、前記凹部及び前記凸部が係合する凹凸係合部の係合深さを前記軸受の軸方向隙間よりも大きくし、
    　一対の前記単列保持器の前記凹凸係合部同士を係合させた状態、又は前記凹部及び前記凸部を係合させた状態で使用することを特徴とする、
    自動調心ころ軸受用保持器。     A cage used for self-aligning roller bearings having two rows of rollers.
    It consists of a pair of single row cages that guide the two rows of rollers for each row.
    The single row cage is
    The large-diameter ring portion and the small-diameter ring portion separated in the axial direction are connected by a plurality of pillar portions to form a shape.
    An uneven engagement portion having an engagement depth larger than the axial gap of the bearing is provided on the end face on the large diameter side, or
    A concave portion is provided on the large-diameter side end surface of one of the single-row cages, and a convex portion is provided on the large-diameter side end surface of the other single-row holder, so that the concave portion and the convex portion engage with each other. The engagement depth of the portion is made larger than the axial gap of the bearing.
    It is characterized in that it is used in a state where the concave-convex engaging portions of the pair of single-row cages are engaged with each other, or in a state where the concave portions and the convex portions are engaged with each other.
    Cage for self-aligning roller bearings.
  2. 　２列のころ列を有する自動調心ころ軸受に用いる保持器であって、
    　前記２列のころ列を各列ごとに案内する一対の単列保持器からなり、
    　前記単列保持器は、
    　　軸方向に離間した大径リング部及び小径リング部を複数の柱部により繋いだ形状を成し、
    　　大径側端面に、前記軸受の軸方向隙間よりも大きい係合深さを有する連結体係合部を有し、
    　一対の前記単列保持器の前記連結体係合部に連結体を係合させた状態で使用することを特徴とする、
    自動調心ころ軸受用保持器。     A cage used for self-aligning roller bearings having two rows of rollers.
    It consists of a pair of single row cages that guide the two rows of rollers for each row.
    The single row cage is
    The large-diameter ring portion and the small-diameter ring portion separated in the axial direction are connected by a plurality of pillar portions to form a shape.
    The large-diameter side end face has a connecting body engaging portion having an engaging depth larger than the axial gap of the bearing.
    It is characterized in that it is used in a state where the connecting body is engaged with the connecting body engaging portion of the pair of the single row cages.
    Cage for self-aligning roller bearings.
  3. 　前記連結体係合部は、嵌合穴であり、
    　前記連結体は、前記嵌合穴に嵌合する軸体である、
    請求項２に記載の自動調心ころ軸受用保持器。     The connecting body engaging portion is a fitting hole and has a fitting hole.
    The connecting body is a shaft body that fits into the fitting hole.
    The cage for self-aligning roller bearings according to claim 2.
  4. 　一対の前記単列保持器は、同一形状である、
    請求項１～３の何れか１項に記載の自動調心ころ軸受用保持器。     The pair of single row cages has the same shape.
    The cage for self-aligning roller bearings according to any one of claims 1 to 3.
  5. 　軌道輪案内方式である、
    請求項１～４の何れか１項に記載の自動調心ころ軸受用保持器。     It is a track ring guidance system,
    The cage for self-aligning roller bearings according to any one of claims 1 to 4.
PCT/JP2021/004438 2020-05-18 2021-02-05 Self-aligning roller bearing retainer WO2021235022A1 (en)

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US3712692A (en) * 1971-01-18 1973-01-23 Textron Inc Welded retainer for an antifriction bearing
JPS53118947U (en) * 1977-01-21 1978-09-21
JP2001140875A (en) * 1999-11-12 2001-05-22 Ntn Corp Self-aligning roller bearing
JP2007225034A (en) * 2006-02-23 2007-09-06 Nsk Ltd Rolling bearing
FR2938027A1 (en) * 2008-10-30 2010-05-07 Roulements Soc Nouvelle Cage for spherical bearing, has spacers prolonged by guiding projection that is axially projected in one of cells annular semi-cage, where line of cells is provided for housing rollers of spherical bearing

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE6752038U (en) * 1968-05-17 1969-09-03 Schaeffler Ohg Industriewerk RADIAL-AXIAL BEARING
US3712692A (en) * 1971-01-18 1973-01-23 Textron Inc Welded retainer for an antifriction bearing
JPS53118947U (en) * 1977-01-21 1978-09-21
JP2001140875A (en) * 1999-11-12 2001-05-22 Ntn Corp Self-aligning roller bearing
JP2007225034A (en) * 2006-02-23 2007-09-06 Nsk Ltd Rolling bearing
FR2938027A1 (en) * 2008-10-30 2010-05-07 Roulements Soc Nouvelle Cage for spherical bearing, has spacers prolonged by guiding projection that is axially projected in one of cells annular semi-cage, where line of cells is provided for housing rollers of spherical bearing

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