JP2009108951A - Fixing method of thrust needle roller bearing - Google Patents

Fixing method of thrust needle roller bearing Download PDF

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JP2009108951A
JP2009108951A JP2007282847A JP2007282847A JP2009108951A JP 2009108951 A JP2009108951 A JP 2009108951A JP 2007282847 A JP2007282847 A JP 2007282847A JP 2007282847 A JP2007282847 A JP 2007282847A JP 2009108951 A JP2009108951 A JP 2009108951A
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roller bearing
needle roller
race
thrust needle
outer ring
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JP5012419B2 (en
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Takashi Ono
崇 大野
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NSK Ltd
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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
    • F16C19/54—Systems consisting of a plurality of bearings with rolling friction
    • F16C19/545—Systems comprising at least one rolling bearing for radial load in combination with at least one rolling bearing for axial load
    • 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
    • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
    • F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
    • 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
    • F16C19/24—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 radial load mainly
    • F16C19/26—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 radial load mainly with a single row 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
    • 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

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fixing method of a thrust needle roller bearing improved in easiness in attachment. <P>SOLUTION: Assemblability is improved in such a way that an outer ring race 21 is pushed in to an outer ring 11, and that a projection 21c is prevented from falling out from the outer ring 11 by a frictional force generated between the projection 21c and the outer ring 11. Furthermore, although a cylindrical section 21b is deformed so that it is bent slightly after the projection 21c engages with a periphery of the outer ring 11, a roller 23 rolls smoothly since its deformation hardly transmits to a disc section 21a, therefore truck surface is not deformed. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、スラスト針状ころ軸受の固定方法に関し、例えば車両用自動変速機の遊星歯車機構や一般産業機械等に用いられるラジアル針状ころ軸受の固定方法に関する。   The present invention relates to a method for fixing a thrust needle roller bearing, for example, a method for fixing a radial needle roller bearing used in a planetary gear mechanism of a vehicle automatic transmission or a general industrial machine.

車両等に搭載されている自動変速機において、一般的には遊星歯車機構が用いられている。ところで、近年は、燃費の向上などを目的として、自動変速機においても多段化される傾向がある。特に、現在は４速が主流である自動変速機を、例えば５速或いは６速に多段化し且つ小型化を図ろうとする試みがある。ここで、特許文献１に示されるように、一般的な遊星歯車機構において遊星歯車を支持する転がり軸受としては、軸受内輪を兼ねるピニオンシャフトと軸受外輪を兼ねる遊星歯車の間に、針状ころが転動体として配置される針状ころ軸受が使用される場合が多い。特許文献１、２には、このような用途で用いられるスラスト針状ころ軸受とラジアルころ軸受が開示されている。
特開２００１−４１２５号公報 特開２００６−１９４３２３号公報 In an automatic transmission mounted on a vehicle or the like, a planetary gear mechanism is generally used. By the way, in recent years, there is a tendency to increase the number of stages in an automatic transmission for the purpose of improving fuel consumption. In particular, there is an attempt to reduce the size of an automatic transmission, which currently has a main speed of 4th speed, to multiple stages, for example, 5th speed or 6th speed. Here, as shown in Patent Document 1, as a rolling bearing that supports a planetary gear in a general planetary gear mechanism, needle rollers are provided between a pinion shaft that also functions as a bearing inner ring and a planetary gear that also functions as a bearing outer ring. Needle roller bearings arranged as rolling elements are often used. Patent Documents 1 and 2 disclose thrust needle roller bearings and radial roller bearings used in such applications.
Japanese Patent Laid-Open No. 2001-4125 JP 2006-194323 A

ところで、特許文献１の図１，５に示す例では、スラスト針状ころ軸受の外輪レースをキャリヤに取り付けた後、ころと保持器と内輪レースとをサブアッセンブリの状態で、外輪レースに組み付けている。このとき、外輪レースに形成された案内部が、キャリヤの周囲に配置されているが、案内部とキャリヤとの間に隙間があるので、不用意に力を与えると、外輪レースがキャリヤから脱落して、組み込みが不能になる恐れがある。一方、特許文献２の図６に示す従来例では、外輪レースの案内部を全周にわたってキャリヤに当接させているが、その案内部の精度が低いとキャリヤに取り付けた際に外輪レースの軌道面が変形し、ころの円滑な転動を妨げたり、早期摩耗が発生する恐れがある。   By the way, in the example shown in FIGS. 1 and 5 of Patent Document 1, after attaching the outer ring race of the thrust needle roller bearing to the carrier, the roller, the cage and the inner ring race are assembled to the outer ring race in the sub-assembly state. Yes. At this time, the guide portion formed on the outer race is arranged around the carrier, but there is a gap between the guide portion and the carrier, so if careless force is applied, the outer race will fall off the carrier. Then, there is a risk that it will be impossible to incorporate. On the other hand, in the conventional example shown in FIG. 6 of Patent Document 2, the guide part of the outer race is brought into contact with the carrier over the entire circumference, but if the accuracy of the guide part is low, the track of the outer ring race is attached to the carrier. The surface may be deformed, preventing smooth rolling of the roller, or premature wear.

又、特許文献２には、レースの筒部の一部を変形してハウジングに組み付けた構造が開示されているが、ハウジングとは筒部とは隙間があるため、組み付け時にやはり脱落するおそれがある。これに対し、例えば部品同士の間にワセリンやグリースで塗りつけることで部品の脱落を抑えることはできるが、粘着力不足のため、振動等を与えると脱落が生じてしまうという問題がある。   Further, Patent Document 2 discloses a structure in which a part of the cylindrical portion of the race is deformed and assembled to the housing. However, since there is a gap between the housing and the cylindrical portion, there is a possibility that it will fall off when assembled. is there. On the other hand, for example, by applying petrolatum or grease between the components, it is possible to suppress the falling of the components. However, due to insufficient adhesive force, there is a problem that the dropping occurs when vibration is applied.

本発明は、かかる従来技術の問題点に鑑み、組み付け容易性を向上させたスラスト針状ころ軸受の固定方法を提供することを目的とする。   An object of the present invention is to provide a method for fixing a thrust needle roller bearing with improved ease of assembly in view of the problems of the prior art.

本発明のスラスト針状ころ軸受の固定方法は、スラスト針状ころ軸受を、固定部材の保持部に固定する固定方法において、
前記スラスト針状ころ軸受は、軌道面とそれに続く周囲部とを備えた第１レースと、前記第１レースの軌道面上を転動する複数のころとを有し、
前記第１レースの周囲部の少なくとも一部は、前記保持部に対し前記第１レースの軸線直交方向外側に位置しており、更に前記周囲部と前記保持部との間には、前記周囲部の全体変形を抑えつつ、前記周囲部と前記保持部との相対移動を抑制する抑制手段が設けられていることを特徴とする In the fixing method of fixing the thrust needle roller bearing of the present invention, the thrust needle roller bearing is fixed to the holding portion of the fixing member.
The thrust needle roller bearing includes a first race having a raceway surface and a surrounding portion that follows the raceway surface, and a plurality of rollers that roll on the raceway surface of the first race,
At least a part of the peripheral portion of the first race is located on the outer side in the direction orthogonal to the axis of the first race with respect to the holding portion, and further, the peripheral portion is between the peripheral portion and the holding portion. A suppressing means for suppressing relative movement between the peripheral portion and the holding portion is provided while suppressing the overall deformation of

本発明によれば、前記第１レースの周囲部の少なくとも一部が、前記保持部に対し前記第１レースの軸線直交方向外側に位置しており、更に前記周囲部と前記保持部との間に抑制手段を設けているので、前記周囲部の全体変形を抑えつつ、前記周囲部と前記保持部との相対移動を抑制することができる。   According to the present invention, at least a part of the peripheral portion of the first race is located on the outer side in the direction orthogonal to the axis of the first race with respect to the holding portion, and further between the peripheral portion and the holding portion. Therefore, the relative movement between the peripheral portion and the holding portion can be suppressed while suppressing the overall deformation of the peripheral portion.

前記スラスト針状ころ軸受は、前記複数のころを保持する保持器と、第２レースとを有し、前記複数のころと、前記保持器と、前記第２レースとを半組立状態にした後に、前記保持部に取り付けた前記第１レースに組み付けると好ましい。   The thrust needle roller bearing includes a cage that holds the plurality of rollers and a second race, and after the plurality of rollers, the cage, and the second race are in a semi-assembled state. It is preferable when assembled to the first race attached to the holding portion.

前記抑制手段は、前記周囲部に形成され、前記保持部に向かって延在する突起であると、前記周囲部の全体変形が抑制されるので好ましい。   It is preferable that the suppressing means is a protrusion formed on the peripheral portion and extending toward the holding portion, because the entire deformation of the peripheral portion is suppressed.

前記突起は、前記保持部の外周に当接していると、前記周囲部の全体変形が抑制されるので好ましい。   It is preferable that the protrusion is in contact with the outer periphery of the holding portion because the entire deformation of the peripheral portion is suppressed.

前記突起は、前記保持部の外周に形成された溝に係合していると、前記周囲部の全体変形が抑制されるので好ましい。   It is preferable that the protrusion engages with a groove formed on the outer periphery of the holding portion because deformation of the entire peripheral portion is suppressed.

前記溝は、前記保持部の周方向に連続していると、組付時の回転方向性を考慮する必要がなくなるので好ましい。   It is preferable that the groove is continuous in the circumferential direction of the holding portion because it is not necessary to consider the rotational direction during assembly.

前記抑制手段は、前記周囲部と前記保持部との間に配置された弾性体であると、前記周囲部の全体変形が抑制されるので好ましい。   It is preferable that the suppression means is an elastic body disposed between the peripheral portion and the holding portion, because the entire deformation of the peripheral portion is suppressed.

前記弾性体は、前記周囲部又は前記保持部に形成された周溝内に配置されたＯ−リングであると、Ｏ−リングの脱落を抑制できるので好ましい。   It is preferable that the elastic body is an O-ring disposed in a circumferential groove formed in the peripheral portion or the holding portion because dropping of the O-ring can be suppressed.

以下、本発明の実施の形態を図面を参照して以下に詳細に説明する。図１は、第１の実施の形態にかかる軸受装置の断面図である。本実施の形態では、ハウジング１に対して、自動変速機用の遊星歯車などのギヤ部材２を、回転自在に支持するために軸受装置ＢＲを備えている。より具体的には、軸受装置ＢＲは、ギヤ部材２のラジアル荷重を受けるラジアル針状ころ軸受１０と、ギヤ部材２のスラスト荷重を受けるスラスト針状ころ軸受２０とを有している。   Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a cross-sectional view of the bearing device according to the first embodiment. In the present embodiment, a bearing device BR is provided for rotatably supporting a gear member 2 such as a planetary gear for an automatic transmission with respect to the housing 1. More specifically, the bearing device BR includes a radial needle roller bearing 10 that receives the radial load of the gear member 2 and a thrust needle roller bearing 20 that receives the thrust load of the gear member 2.

図１において、ラジアル針状ころ軸受１０は、ハウジング１の内周に嵌合した外輪１１と、外輪１１の内周に沿って転動する複数のころ１３と、ころ１３を保持する保持器１４とからなる。   In FIG. 1, a radial needle roller bearing 10 includes an outer ring 11 fitted to the inner periphery of the housing 1, a plurality of rollers 13 that roll along the inner periphery of the outer ring 11, and a cage 14 that holds the rollers 13. It consists of.

一方、スラスト針状ころ軸受２０は、ラジアル針状ころ軸受１０の外輪１１に取り付けられた外輪レース（第１レース）２１と、ギヤ部材２のフランジ部２ｂに固定された内輪レース（第２レース）２２と、外輪レース２１と内輪レース２２との間に転動自在に配置された複数のころ２３と、ころ２３を保持する保持器２４とからなる。板材からプレスで一体的に形成される内輪レース２２は、ころ２３が転動する軌道面を備えた円盤部２２ａと、円盤部２２ａの外周から軸線方向に延在する円管部２２ｂとを有する。保持器２４は、ドーナツ板状の円形の板材をプレスして対向する側に重ね合わせ溶接してなる、いわゆる２枚保持器である。   On the other hand, the thrust needle roller bearing 20 includes an outer ring race (first race) 21 attached to the outer ring 11 of the radial needle roller bearing 10 and an inner ring race (second race) fixed to the flange portion 2b of the gear member 2. ) 22, a plurality of rollers 23 that are rotatably arranged between the outer race 21 and the inner race 22, and a cage 24 that holds the rollers 23. The inner ring race 22 formed integrally from a plate material by a press has a disk part 22a having a raceway surface on which the rollers 23 roll, and a circular pipe part 22b extending in the axial direction from the outer periphery of the disk part 22a. . The retainer 24 is a so-called two-sheet retainer formed by pressing a donut plate-shaped circular plate material and superposing and welding them on opposite sides.

図２は、中央開口を有する外輪レース２１を軸線方向から見た図である。図１，２を参照して、板材からプレスで一体的に形成される外輪レース２１は、ころ２３が転動する軌道面を備えた円盤部２１ａと、円盤部２１ａの外周から軸線方向に延在する円管部２１ｂとを有する。更に、円管部２１ｂの周縁には、周方向に等間隔に４つ（２つ，３つ，又は５つ以上でも良い）の突起２１ｃが形成されている。突起２１ｃの先端は、図２に一点鎖線で示すラジアル針状ころ軸受１０の外輪１１の外周円筒面よりも、半径方向内側に突出している。突起２１ｃは、例えば円管部２１ｂの周縁を、半径方向外側から局所的にカシメ（塑性変形）することで形成できるが、これに限られない。   FIG. 2 is a view of the outer race 21 having a central opening as viewed from the axial direction. Referring to FIGS. 1 and 2, an outer race 21 integrally formed by pressing a plate material includes a disc portion 21a having a raceway surface on which rollers 23 roll, and an axial direction extending from the outer periphery of the disc portion 21a. And an existing circular pipe portion 21b. Furthermore, four protrusions 21c (which may be two, three, or five or more) are formed at equal intervals in the circumferential direction on the periphery of the circular pipe portion 21b. The tip of the protrusion 21c protrudes radially inward from the outer peripheral cylindrical surface of the outer ring 11 of the radial needle roller bearing 10 indicated by a one-dot chain line in FIG. The protrusion 21c can be formed by, for example, locally caulking (plastic deformation) the peripheral edge of the circular pipe portion 21b from the outside in the radial direction, but is not limited thereto.

図３は、軸受装置ＢＲの組み付け時の状態を示す図であるが、組み付け時には軸線を上下方向としている。図３において、まずラジアル針状ころ軸受１０の外輪（保持部）１１を、一部が突出した状態でハウジング１の内周に圧入し、更に保持器１４により保持したころ１３を、外輪１１の内周に組み込む。続いて、スラスト針状ころ軸受２０の外輪レース２１の円管部（周囲部）２１ｂを、軸線方向にスライドさせながら、外輪１１の外周に組み付ける。このとき、突起２１ｃの突出量は小さいので、外輪１１の外周に係合する際に大きな抵抗がなく、スムーズに係合できる。尚、外輪１１の端部外周に、面取り部やテーパ面を形成しておけば、更にスムーズに外輪レース１１を組み付けることができる。   FIG. 3 is a diagram showing a state when the bearing device BR is assembled, and the axis is set in the vertical direction when the bearing device BR is assembled. In FIG. 3, first, the outer ring (holding portion) 11 of the radial needle roller bearing 10 is press-fitted into the inner periphery of the housing 1 in a partially protruding state, and the roller 13 held by the retainer 14 is inserted into the outer ring 11. Install in the inner circumference. Subsequently, the circular pipe part (surrounding part) 21b of the outer ring race 21 of the thrust needle roller bearing 20 is assembled to the outer periphery of the outer ring 11 while sliding in the axial direction. At this time, since the protrusion amount of the protrusion 21c is small, there is no great resistance when engaging the outer periphery of the outer ring 11, and the protrusion can be smoothly engaged. If a chamfered portion or a tapered surface is formed on the outer periphery of the end portion of the outer ring 11, the outer ring race 11 can be assembled more smoothly.

外輪１１に対して外輪レース２１を押し込むと、突起２１ｃと外輪１１との間に発生する摩擦力で、外輪１１から突起２１ｃが脱落することが抑制され、組付性が向上する。更に、突起２１ｃが外輪１１の外周に係合した後は、円管部２１ｂは先端が若干撓むように変形するが、円盤部２１ａにその変形は殆ど伝わらず、よって軌道面が変形することがないので、ころ２３の転動がスムーズになる。   When the outer ring race 21 is pushed into the outer ring 11, the frictional force generated between the protrusion 21c and the outer ring 11 prevents the protrusion 21c from dropping from the outer ring 11, and the assembling property is improved. Further, after the protrusion 21c is engaged with the outer periphery of the outer ring 11, the circular tube portion 21b is deformed so that the tip is slightly bent, but the deformation is hardly transmitted to the disk portion 21a, and thus the raceway surface is not deformed. Therefore, the rolling of the roller 23 becomes smooth.

一方、スラスト針状ころ軸受２０のころ２３と、保持器２４とを、内輪レース２２に組み付けることによりサブアッセンブリＡＳＹ（半組立状態）とする。このサブアッセンブリＡＳＹでは、内輪レース２２の円管部２２ｂの先端を軽く内側にカシメることで、塑性変形した部分（Ｃ）が保持器２４に当たり、ころ２３及び保持器２４が内輪レース２２から脱落しないようになっていると好ましい。サブアッセンブリＡＳＹを、ギヤ部材２の軸部２ａに組み付けた後、軸部２ａをラジアル針状ころ軸受１０のころ１３内に挿入することで、軸受装置ＢＲが組み付けられる。   On the other hand, the roller 23 of the thrust needle roller bearing 20 and the cage 24 are assembled to the inner race 22 to obtain a subassembly ASY (semi-assembled state). In this subassembly ASY, the tip of the circular pipe portion 22b of the inner ring race 22 is lightly caulked inward, so that the plastically deformed portion (C) hits the cage 24, and the rollers 23 and the cage 24 drop off from the inner race 22. It is preferable not to do so. After the subassembly ASY is assembled to the shaft portion 2 a of the gear member 2, the shaft portion 2 a is inserted into the roller 13 of the radial needle roller bearing 10, whereby the bearing device BR is assembled.

図４は、第２の実施の形態にかかる軸受装置ＢＲの図１と同様な断面図である。本実施の形態においては、ラジアル針状ころ軸受１０の外輪１１’の外周に、周方向に連続した周溝１１ａを形成している。従って、外輪１１に対して所定位置まで外輪レース２１を押し込むと、突起２１ｃと周溝１１ａとが係合し、外輪１１から外輪レース２１が脱落することが抑制されるとともに、組付けの際に発生した円管部２１ｂの弾性変形が殆ど元に戻るため、円盤部２１ａの変形は更に少なくなる。周溝１１ａの断面は、円形、Ｖ字状、矩形状など種々の形態を取りうる。   FIG. 4 is a cross-sectional view similar to FIG. 1 of the bearing device BR according to the second embodiment. In the present embodiment, a circumferential groove 11a continuous in the circumferential direction is formed on the outer circumference of the outer ring 11 'of the radial needle roller bearing 10. Therefore, when the outer ring race 21 is pushed to a predetermined position with respect to the outer ring 11, the protrusion 21c and the circumferential groove 11a are engaged with each other, and the outer ring race 21 is prevented from dropping from the outer ring 11, and at the time of assembly. Since the generated elastic deformation of the circular pipe portion 21b is almost restored, the deformation of the disk portion 21a is further reduced. The cross section of the circumferential groove 11a can take various forms such as a circular shape, a V shape, and a rectangular shape.

図５は、第３の実施の形態にかかる軸受装置ＢＲの図１と同様な断面図である。本実施の形態においても、第２の実施の形態と同様に、ラジアル針状ころ軸受１０の外輪１１’の外周に、周方向に連続した周溝１１ａを形成しているが、抑制手段としてＯ−リング３０を周溝１１ａに配置した点が異なる。尚、本実施の形態においては、外輪レース２１’は突起を有しておらず、円管部２１ｂの内周は軸線方向にストレート形状である。   FIG. 5 is a cross-sectional view similar to FIG. 1 of the bearing device BR according to the third embodiment. Also in the present embodiment, as in the second embodiment, the circumferential groove 11a that is continuous in the circumferential direction is formed on the outer periphery of the outer ring 11 ′ of the radial needle roller bearing 10; -The point which has arrange | positioned the ring 30 to the circumferential groove 11a differs. In the present embodiment, the outer race 21 'does not have a protrusion, and the inner periphery of the circular pipe portion 21b has a straight shape in the axial direction.

本実施の形態によれば、外輪１１に対して所定位置まで外輪レース２１’を押し込むと、変形したＯ−リング３０の弾性力に基づく摩擦力により円管部２１ｂと外輪１１’との相対移動が抑制され、外輪１１’から外輪レース２１’が脱落することが抑制される。又、Ｏ−リング３０の弾性力は小さいので、円管部２１ｂの変形量は小さく、円盤部２１ａは殆ど変形しない。尚、Ｏ−リング３０を収容する周溝は、外輪レース２１’の円管部２１ｂの内周に設けられていても良い。   According to the present embodiment, when the outer ring race 21 ′ is pushed to a predetermined position with respect to the outer ring 11, the relative movement between the circular pipe portion 21 b and the outer ring 11 ′ is caused by the frictional force based on the elastic force of the deformed O-ring 30. Is suppressed, and the outer ring race 21 'is prevented from dropping from the outer ring 11'. Further, since the elastic force of the O-ring 30 is small, the deformation amount of the circular pipe portion 21b is small, and the disk portion 21a is hardly deformed. The circumferential groove that accommodates the O-ring 30 may be provided on the inner circumference of the circular pipe portion 21b of the outer race 21 '.

図６は、第４の実施の形態にかかる軸受装置ＢＲの図１と同様な断面図である。本実施の形態においては、ラジアル針状ころ軸受１０の外輪１１の外周に周溝を形成しておらず、又、外輪レース２１’の円管部２１ｂに突起を形成していない。その代わりに、円管部２１ｂと外輪１１との間に、抑制手段としての管状の薄肉弾性部材（ゴム又は樹脂）４０を配置している。薄肉弾性部材４０は、出荷時より外輪１１に固着されていると好ましい。   FIG. 6 is a cross-sectional view similar to FIG. 1 of a bearing device BR according to the fourth embodiment. In the present embodiment, no circumferential groove is formed on the outer periphery of the outer ring 11 of the radial needle roller bearing 10, and no protrusion is formed on the circular pipe portion 21b of the outer ring race 21 '. Instead, a tubular thin-walled elastic member (rubber or resin) 40 as a restraining means is disposed between the circular pipe portion 21b and the outer ring 11. The thin elastic member 40 is preferably fixed to the outer ring 11 at the time of shipment.

本実施の形態によれば、外輪１１に対して所定位置まで外輪レース２１’を押し込むと、薄肉弾性部材４０の弾性力に基づく摩擦力により円管部２１ｂと外輪１１’との相対移動が抑制され、外輪１１’から外輪レース２１’が脱落することが抑制される。又、薄肉弾性部材４０の弾性力は小さいので、円管部２１ｂの変形量は小さく、円盤部２１ａは殆ど変形しない。   According to the present embodiment, when the outer ring race 21 ′ is pushed into the outer ring 11 to a predetermined position, the relative movement between the circular pipe portion 21 b and the outer ring 11 ′ is suppressed by the frictional force based on the elastic force of the thin elastic member 40. Thus, the outer race 21 ′ is prevented from dropping from the outer race 11 ′. Further, since the elastic force of the thin elastic member 40 is small, the deformation amount of the circular pipe portion 21b is small, and the disk portion 21a is hardly deformed.

以上、本発明を実施例を参照して説明してきたが、本発明は上記実施例に限定して解釈されるべきではなく、適宜変更・改良が可能であることはもちろんである。たとえば、外輪レースの周囲部は完全な円管状でなく、端部から１つもしくは複数の切欠が延在する形状でも良い。又、スラスト針状ころ軸受を取り付けるため保持部は、ラジアル針状ころ軸受の外輪としたが、これに限らず任意の円筒部を用いることができる。更に、ハウジングに対してスラスト針状ころ軸受が支持するものは、ギヤ部材に限られない。又、本発明の用途は自動変速機に限られない。   The present invention has been described above with reference to the embodiments. However, the present invention should not be construed as being limited to the above-described embodiments, and can be changed or improved as appropriate. For example, the outer ring race may have a shape in which one or a plurality of cutouts extend from the end portion of the outer ring race instead of a complete circular tube. In order to attach the thrust needle roller bearing, the holding portion is the outer ring of the radial needle roller bearing. However, the present invention is not limited to this, and any cylindrical portion can be used. Furthermore, what a thrust needle roller bearing supports with respect to a housing is not restricted to a gear member. The application of the present invention is not limited to an automatic transmission.

第１の実施の形態にかかる軸受装置ＢＲの断面図である。It is sectional drawing of the bearing apparatus BR concerning 1st Embodiment. 外輪レース２１を軸線方向から見た図である。It is the figure which looked at the outer ring race 21 from the axial direction. 軸受装置ＢＲの組み付け時の状態を示す図である。It is a figure which shows the state at the time of the assembly | attachment of the bearing apparatus BR. 第２の実施の形態にかかる軸受装置ＢＲの断面図である。It is sectional drawing of the bearing apparatus BR concerning 2nd Embodiment. 第３の実施の形態にかかる軸受装置ＢＲの断面図である。It is sectional drawing of the bearing apparatus BR concerning 3rd Embodiment. 第４の実施の形態にかかる軸受装置ＢＲの断面図である。It is sectional drawing of the bearing apparatus BR concerning 4th Embodiment.

符号の説明Explanation of symbols

１ ハウジング
２ ギヤ部材
２ａ 軸部
２ｂ フランジ部
１０ ラジアル針状ころ軸受
１１、１１’ 外輪
１１ａ 周溝
１３ ころ
１４ 保持器
２０ スラスト針状ころ軸受
２１ 外輪レース
２１ａ 円盤部
２１ｂ 円管部
２１ｃ 突起
２２ 内輪レース
２２ａ 円盤部
２２ｂ 円管部
２３ ころ
２４ 保持器
３０ リング
４０ 薄肉弾性部材
ＡＳＹ サブアッセンブリ
ＢＲ 軸受装置 DESCRIPTION OF SYMBOLS 1 Housing 2 Gear member 2a Shaft part 2b Flange part 10 Radial needle roller bearing 11, 11 'Outer ring 11a Circumferential groove 13 Roller 14 Cage 20 Thrust needle roller bearing 21 Outer ring race 21a Disk part 21b Circular pipe part 21c Protrusion 22 Inner ring Race 22a Disk portion 22b Circular tube portion 23 Roller 24 Cage 30 Ring 40 Thin elastic member ASY Subassembly BR Bearing device

Claims (8)

スラスト針状ころ軸受を、固定部材の保持部に固定する固定方法において、
前記スラスト針状ころ軸受は、軌道面とそれに続く周囲部とを備えた第１レースと、前記第１レースの軌道面上を転動する複数のころとを有し、
前記第１レースの周囲部の少なくとも一部は、前記保持部に対し前記第１レースの軸線直交方向外側に位置しており、更に前記周囲部と前記保持部との間には、前記周囲部の全体変形を抑えつつ、前記周囲部と前記保持部との相対移動を抑制する抑制手段が設けられていることを特徴とするスラスト針状ころ軸受の固定方法。 In the fixing method of fixing the thrust needle roller bearing to the holding portion of the fixing member,
The thrust needle roller bearing includes a first race having a raceway surface and a surrounding portion that follows the raceway surface, and a plurality of rollers that roll on the raceway surface of the first race,
At least a part of the peripheral portion of the first race is located on the outer side in the direction orthogonal to the axis of the first race with respect to the holding portion, and further, the peripheral portion is between the peripheral portion and the holding portion. A thrust needle roller bearing fixing method comprising: a restraining means for restraining relative movement between the peripheral portion and the holding portion while restraining the overall deformation of the thrust needle roller bearing. 前記スラスト針状ころ軸受は、前記複数のころを保持する保持器と、第２レースとを有し、
前記複数のころと、前記保持器と、前記第２レースとを半組立状態にした後に、前記保持部に取り付けた前記第１レースに組み付けることを特徴とする請求項１に記載のスラスト針状ころ軸受の固定方法。 The thrust needle roller bearing has a cage that holds the plurality of rollers, and a second race,
2. The thrust needle shape according to claim 1, wherein after the plurality of rollers, the cage, and the second race are in a semi-assembled state, the rollers are assembled to the first race attached to the holding portion. Fixing method of roller bearing. 前記抑制手段は、前記周囲部に形成され、前記保持部に向かって延在する突起であることを特徴とする請求項１又は２に記載のスラスト針状ころ軸受の固定方法。   The method of fixing a thrust needle roller bearing according to claim 1 or 2, wherein the suppressing means is a protrusion formed on the peripheral portion and extending toward the holding portion. 前記突起は、前記保持部の外周に当接していることを特徴とする請求項３に記載のスラスト針状ころ軸受の固定方法。   The thrust needle roller bearing fixing method according to claim 3, wherein the protrusion is in contact with an outer periphery of the holding portion. 前記突起は、前記保持部の外周に形成された溝に係合していることを特徴とする請求項３に記載のスラスト針状ころ軸受の固定方法。   The method of fixing a thrust needle roller bearing according to claim 3, wherein the protrusion is engaged with a groove formed on an outer periphery of the holding portion. 前記溝は、前記保持部の周方向に連続していることを特徴とする請求項５に記載のスラスト針状ころ軸受の固定方法。   The method for fixing a thrust needle roller bearing according to claim 5, wherein the groove is continuous in a circumferential direction of the holding portion. 前記抑制手段は、前記周囲部と前記保持部との間に配置された弾性体であることを特徴とする請求項１又は２に記載のスラスト針状ころ軸受の固定方法。   The thrust needle roller bearing fixing method according to claim 1 or 2, wherein the suppressing means is an elastic body disposed between the peripheral portion and the holding portion. 前記弾性体は、前記周囲部又は前記保持部に形成された周溝内に配置されたＯ−リングであることを特徴とする請求項７に記載のスラスト針状ころ軸受の固定方法。   The method for fixing a thrust needle roller bearing according to claim 7, wherein the elastic body is an O-ring disposed in a circumferential groove formed in the peripheral portion or the holding portion.
JP2007282847A 2007-10-31 2007-10-31 Thrust needle roller bearing fixing method Active JP5012419B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013108599A (en) * 2011-11-24 2013-06-06 Nsk Ltd Thrust race, thrust roller bearing with race, and rotation support device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002013537A (en) * 2000-06-29 2002-01-18 Nsk Ltd Thrust needle roller bearing
JP2005214312A (en) * 2004-01-30 2005-08-11 Nsk Ltd One-way clutch assembly with thrust roller bearing
JP2006161991A (en) * 2004-12-09 2006-06-22 Jtekt Corp Thrust roller bearing

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002013537A (en) * 2000-06-29 2002-01-18 Nsk Ltd Thrust needle roller bearing
JP2005214312A (en) * 2004-01-30 2005-08-11 Nsk Ltd One-way clutch assembly with thrust roller bearing
JP2006161991A (en) * 2004-12-09 2006-06-22 Jtekt Corp Thrust roller bearing

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013108599A (en) * 2011-11-24 2013-06-06 Nsk Ltd Thrust race, thrust roller bearing with race, and rotation support device

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