JP2013108599A5 - - Google Patents

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JP2013108599A5
JP2013108599A5 JP2011255774A JP2011255774A JP2013108599A5 JP 2013108599 A5 JP2013108599 A5 JP 2013108599A5 JP 2011255774 A JP2011255774 A JP 2011255774A JP 2011255774 A JP2011255774 A JP 2011255774A JP 2013108599 A5 JP2013108599 A5 JP 2013108599A5
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Japan
Prior art keywords
race
thrust
roller bearing
engaging
free state
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JP2011255774A
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Japanese (ja)
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JP5953713B2 (en
JP2013108599A (en
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Priority claimed from JP2011255774A external-priority patent/JP5953713B2/en
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Description

上述の様なレース付スラストころ軸受1の使用時に、前記両スラストレース4a、4bが、前記回転軸5又は前記回転部材に対し相対回転する、所謂クリープが発生すると、前記回転支持部を備えた各種機械の耐久性が損なわれる。即ち、クリープにより、硬質金属製のスラストレース4a(4b)が、前記段部6の端面或いは回転部材の軸方向端面と擦れ合う事で、これら両端面のうちの何れかの端面が磨耗する可能性がある。特に、前記レース付スラストころ軸受1の軸方向両側に配置される1対の対向部材のうちの何れかの対向部材が、アルミニウム系合金等の軽合金製である場合には、前記クリープに基づく磨耗が著しくなり易い。そして、磨耗した場合には、摩耗粉により歯車同士の噛合部や各転がり軸受の転がり接触部を損傷し易くなるだけでなく、前記回転支持部でがたつきが発生する原因にもなる。 When the thrust roller bearing with race 1 as described above is used, when the so-called creep occurs in which both the thrust traces 4a and 4b rotate relative to the rotating shaft 5 or the rotating member, the rotation support portion is provided. The durability of various machines is impaired. That is, due to creep, the hard metal thrust race 4a (4b) may be worn against the end surface of the stepped portion 6 or the axial end surface of the rotating member, and any of these end surfaces may be worn. There is. In particular, when any one of a pair of facing members disposed on both axial sides of the thrust roller bearing with race 1 is made of a light alloy such as an aluminum alloy, it is based on the creep. Wear tends to be significant. And when it wears, not only it will become easy to damage the meshing part of gears and the rolling contact part of each rolling bearing by abrasion powder, but it will also become a cause of rattling in the said rotation support part.

更に、請求項6に記載した回転支持装置は、1対の対向部材と、少なくとも1個の保持凹部と、係合凹部と、レース付スラストころ軸受とを備える。
このうちの1対の対向部材は、回転中心軸を互いに一致させて、軸方向に対向させた状態で設けている。
又、前記保持凹部は、前記両対向部材のうちの少なくとも一方の対向部材、即ち、前記スラストレースを添設する対向部材の軸方向端面(軸方向中間部に形成した段差面や支持壁の片側面も含む。本明細書及び特許請求の範囲全体で同じ。)で、他方の対向部材の軸方向端面に対向する部分に形成している。尚、対向部材が硬質金属製の場合には、スラスト軌道面を当該対向部材の軸方向端面に直接設ける場合があり、その様な場合には当該対向部材に前記保持凹部を形成する必要は無い。但し、前記両対向部材の何れにも前記スラストレースを添設する場合には、これら両対向部材に、前記保持凹部を形成する。
又、前記係合凹部は、この保持凹部の外周縁から径方向外方に凹んだ状態で設けている。この様な係合凹部は、少なくとも1個設けるが、好ましくは周方向等間隔の複数箇所(特に好ましくは3〜6箇所程度)に設ける。
更に、前記レース付スラストころ軸受は、前記保持凹部に内嵌したレース部及びこのレース部の外周縁から径方向外方に突出する状態で設けられて前記係合凹部に内嵌した係合凸部を備えたスラストレースを含んで構成する。
特に、本発明の回転支持装置に於いては、前記レース付スラストころ軸受を、上述の請求項5に記載したレース付スラストころ軸受とする。
Furthermore, the rotation support device according to claim 6 includes a pair of opposing members, at least one holding recess, an engagement recess, and a thrust roller bearing with a race.
The pair of opposing members are provided in a state in which the rotation center axes coincide with each other and face each other in the axial direction.
In addition, the holding recess includes at least one opposing member of the opposing members, that is, an axial end surface of the opposing member to which the thrust trace is attached (a step surface formed on an axially intermediate portion or a piece of a support wall) In the present specification and the entire scope of the claims, the same is applied to the other end of the opposing member. When the opposing member is made of hard metal, the thrust raceway surface may be provided directly on the end surface in the axial direction of the opposing member. In such a case, it is not necessary to form the holding recess in the opposing member. . However, when the thrust trace is attached to both of the opposing members, the holding recesses are formed in the opposing members.
The engaging recess is provided in a state of being recessed radially outward from the outer peripheral edge of the holding recess. Although at least one such engagement recess is provided, it is preferably provided at a plurality of locations (particularly preferably about 3 to 6 locations) at equal intervals in the circumferential direction.
Further, the thrust roller bearing with a race is provided with a race portion fitted in the holding recess and an engaging projection fitted in the engagement recess provided in a state of projecting radially outward from an outer peripheral edge of the race portion. It is configured including a thrust trace provided with a section.
In particular, in the rotation support device of the present invention, the thrust roller bearing with a race is the thrust roller bearing with a race described in claim 5 described above.

上述の様な本発明の回転支持装置を実施する場合に、例えば請求項7に記載した発明の様に、前記レース付スラストころ軸受に組み込まれたスラストレースを、請求項2〜3のうちの何れか1項に記載したスラストレースとする。
そして、前記係合凹部の周方向に関する自由状態での幅寸法を、前記小突起を含む、前記係合凸部の同方向に関する自由状態での幅寸法よりも小さく、但し、この係合凸部を前記係合凹部内に、何れかの部分を変形(弾性変形と塑性変形との一方又は双方)させる事で押し込み可能とする。
When implementing the rotation support device of the present invention as described above, for example, as in the invention described in claim 7, the thrust trace incorporated in the thrust roller bearing with race is The thrust trace described in any one of the items is used.
And the width dimension in the free state in the circumferential direction of the engagement recess is smaller than the width dimension in the free state in the same direction of the engagement protrusion including the small protrusion, provided that the engagement protrusion Can be pushed into the engaging recess by deforming any part (one or both of elastic deformation and plastic deformation).

或いは、請求項8に記載した発明の様に、前記レース付スラストころ軸受に組み込まれたスラストレースを、請求項4に記載したスラストレースとする。
そして、前記係合凹部の外接円の自由状態での直径を、前記小突起を含む、前記係合凸部の外接円の自由状態での直径よりも小さく、但し、この係合凸部を前記係合凹部内に、何れかの部分を変形させる事で押し込み可能とする。
Alternatively, as in the invention described in claim 8, the thrust trace incorporated in the thrust roller bearing with race is a thrust trace described in claim 4.
The diameter of the circumscribed circle of the engaging recess in the free state is smaller than the diameter of the circumscribed circle of the engaging convex including the small protrusion, provided that the engaging convex is the It can be pushed in by deforming any part into the engaging recess.

Claims (3)

回転中心軸を互いに一致させて軸方向に対向させた状態で設けられた1対の対向部材と、これら両対向部材のうちの少なくとも一方の対向部材の軸方向端面で、他方の対向部材の軸方向端面に対向する部分に形成された保持凹部と、この保持凹部の外周縁から径方向外方に凹んだ状態で設けられた、少なくとも1個の係合凹部と、この保持凹部に内嵌したレース部及びこのレース部の外周縁から径方向外方に突出する状態で設けられて前記係合凹部に内嵌した係合凸部を備えたスラストレースを含むレース付スラストころ軸受とを備えた回転支持装置に於いて、このレース付スラストころ軸受が請求項5に記載したレース付スラストころ軸受である事を特徴とする回転支持装置。 A pair of opposing members provided in a state in which the rotation center axes coincide with each other in the axial direction, and an axial end surface of at least one of the opposing members, the axis of the other opposing member A holding recess formed in a portion facing the direction end surface, at least one engaging recess provided in a state of being recessed radially outward from the outer peripheral edge of the holding recess, and fitted into the holding recess A thrust roller bearing with a race including a race portion and a thrust race provided with an engaging convex portion fitted in the engaging concave portion provided in a state of projecting radially outward from an outer peripheral edge of the race portion. in the rotation supporting device, rotating support apparatus and wherein the race with a thrust roller bearing is a thrust roller bearing with race according to claim 5. 前記レース付スラストころ軸受に組み込まれたスラストレースが、請求項2〜3のうちの何れか1項に記載したスラストレースであり、前記係合凹部の周方向に関する自由状態での幅寸法が、前記小突起を含む、前記係合凸部の同方向に関する自由状態での幅寸法よりも小さく、この係合凸部を前記係合凹部内に、何れかの部分を変形させる事で押し込み可能である、請求項6に記載した回転支持装置。 The thrust trace incorporated in the thrust roller bearing with race is the thrust trace according to any one of claims 2 to 3, wherein a width dimension in a free state with respect to a circumferential direction of the engagement recess is Including the small protrusion, the engaging convex portion is smaller than the width dimension in the free state in the same direction, and the engaging convex portion can be pushed into the engaging concave portion by deforming any part. The rotation support device according to claim 6 which is. 前記レース付スラストころ軸受に組み込まれたスラストレースが、請求項4に記載したスラストレースであり、前記係合凹部の外接円の自由状態での直径が、前記小突起を含む、前記係合凸部の外接円の自由状態での自由状態での直径よりも小さく、この係合凸部を前記係合凹部内に、何れかの部分を変形させる事で押し込み可能である、請求項6に記載した回転支持装置。 5. The thrust trace incorporated in the thrust roller bearing with race is the thrust trace according to claim 4, wherein a diameter of a circumscribed circle of the engagement recess in a free state includes the small protrusion. The diameter of the circumscribed circle of the part is smaller than the diameter of the free state in the free state, and the engaging convex part can be pushed into the engaging concave part by deforming any part. Rotating support device.
JP2011255774A 2011-11-24 2011-11-24 Thrust trace, thrust roller bearing with race and rotation support device Active JP5953713B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2011255774A JP5953713B2 (en) 2011-11-24 2011-11-24 Thrust trace, thrust roller bearing with race and rotation support device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2011255774A JP5953713B2 (en) 2011-11-24 2011-11-24 Thrust trace, thrust roller bearing with race and rotation support device

Publications (3)

Publication Number Publication Date
JP2013108599A JP2013108599A (en) 2013-06-06
JP2013108599A5 true JP2013108599A5 (en) 2015-01-08
JP5953713B2 JP5953713B2 (en) 2016-07-20

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Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03129122A (en) * 1989-10-14 1991-06-03 Jatco Corp Thrust bearing installing mechanism
US5007746A (en) * 1989-12-26 1991-04-16 Federal-Mogul Corporation Thrust bearing with resilient retention tang
JP4552827B2 (en) * 2005-10-14 2010-09-29 アイシン・エィ・ダブリュ株式会社 Thrust bearing device
JP5012419B2 (en) * 2007-10-31 2012-08-29 日本精工株式会社 Thrust needle roller bearing fixing method

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