JP2542251Y2 - Synthetic resin cage for cylindrical roller bearings - Google Patents
Synthetic resin cage for cylindrical roller bearingsInfo
- Publication number
- JP2542251Y2 JP2542251Y2 JP1991051746U JP5174691U JP2542251Y2 JP 2542251 Y2 JP2542251 Y2 JP 2542251Y2 JP 1991051746 U JP1991051746 U JP 1991051746U JP 5174691 U JP5174691 U JP 5174691U JP 2542251 Y2 JP2542251 Y2 JP 2542251Y2
- Authority
- JP
- Japan
- Prior art keywords
- diameter side
- cylindrical roller
- guide surface
- synthetic resin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Description
【０００１】[0001]
【産業上の利用分野】本考案は、円筒ころ軸受に組み込
まれる合成樹脂製保持器に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a synthetic resin cage incorporated in a cylindrical roller bearing.
【０００２】[0002]
【従来の技術】円筒ころ軸受用の合成樹脂製保持器は、
図２および図３に示すように、合成樹脂で一体成形され
る環状の本体２１の周方向等間隔位置に多数のポケット
２２を形成したものである。ポケット２２は、本体２１
の軸方向中央部に設けられ、円筒ころ２３が外径側もし
くは内径側から嵌め込まれるようになっている。2. Description of the Related Art Synthetic resin cages for cylindrical roller bearings are:
As shown in FIGS. 2 and 3, a large number of pockets 22 are formed at equal circumferential positions of an annular main body 21 integrally formed of synthetic resin. The pocket 22 is attached to the main body 21.
, And the cylindrical roller 23 is fitted from the outside diameter side or the inside diameter side.
【０００３】[0003]
【考案が解決しようとする課題】ところで、従来のこの
種の保持器では、ポケット２２内側の円筒ころ２３用案
内面２２ａが、円筒ころ２３の外径とほぼ同一の円弧面
に形成されているのが普通である。そのため、円筒ころ
２３の回転中、ポケット２２の外径側もしくは内径側
で、案内面２２ａの端のエッジが円筒ころ２３の外周面
に接触し、円筒ころ２３の外周面に付着する潤滑剤を掻
き取り、潤滑不良を引き起こす。By the way, in this type of conventional cage, the guide surface 22a for the cylindrical roller 23 inside the pocket 22 is formed in an arc surface substantially the same as the outer diameter of the cylindrical roller 23. Is common. Therefore, during the rotation of the cylindrical roller 23, on the outer diameter side or the inner diameter side of the pocket 22, the edge of the end of the guide surface 22 a contacts the outer peripheral surface of the cylindrical roller 23, and the lubricant adhering to the outer peripheral surface of the cylindrical roller 23 is removed. Causes scraping and poor lubrication.
【０００４】また、従来のこの種の保持器では、ポケッ
ト２２の案内面２２ａと円筒ころ２３との隙間が内径側
と外径側とで同一になっている（β1＝β2）。そのた
め、回転により軸受全体の温度が上昇し、これに伴い、
保持器の径が熱膨張により大きくなると、ポケット２２
の内径側では案内面２２ａと円筒ころ２３との隙間β1
が極めて小さくなり、エッジの接触による潤滑剤の掻き
取りが一層生じやすくなるほか、円筒ころ２３の回転が
阻害され、円筒ころ２３の回転不良が生じることがあ
る。In this type of conventional cage, the gap between the guide surface 22a of the pocket 22 and the cylindrical roller 23 is the same on the inner diameter side and the outer diameter side (β 1 = β 2 ). As a result, the temperature of the entire bearing rises due to rotation,
When the diameter of the retainer increases due to thermal expansion, the pocket 22
On the inner diameter side of the gap β 1 between the guide surface 22 a and the cylindrical roller 23.
Is extremely small, and the scraping of the lubricant due to the contact of the edge is more likely to occur. In addition, the rotation of the cylindrical roller 23 is hindered, and the rotation of the cylindrical roller 23 may be defective.
【０００５】このような不都合を防止するために、ポケ
ット２２の案内面２２ａを後退させて、案内面２２ａと
円筒ころ２３との隙間を大きくすることが考えられる
が、その場合は、円筒ころ２３に対して保持器全体が遊
動しやすくなり、この遊動が振動や騒音の発生源となる
から、好ましくない。In order to prevent such inconvenience, it is conceivable that the guide surface 22a of the pocket 22 is retracted to increase the gap between the guide surface 22a and the cylindrical roller 23. In this case, the entire retainer easily moves, and this movement is a source of vibration and noise.
【０００６】本考案は、かかる問題点に対処したもので
あって、円筒ころに対するエッジの接触をなくして、潤
滑を良好にするとともに、温度上昇時の円筒ころの回転
不良の発生を防止することを課題とする。SUMMARY OF THE INVENTION The present invention has been made to address such a problem, and eliminates the contact of the edge with the cylindrical roller to improve lubrication and to prevent the occurrence of poor rotation of the cylindrical roller when the temperature rises. As an issue.
【０００７】[0007]
【課題を解決するための手段】本考案は、環状の本体の
周方向等間隔位置に、円筒ころが外径側もしくは内径側
から嵌め込まれるポケットが形成されている合成樹脂製
保持器において、ポケットの内側面は、内径側から外径
側にかけて３段の平面で多角形に形成され、ポケットの
内径側と外径側の各平面は、それぞれ円筒ころと線接触
する案内面とされるとともに、この案内面の端のエッジ
が円筒ころと非接触とされ、内径側の案内面とポケット
中心に位置する円筒ころとの間の隙間が、外径側の隙間
より大きく設定されている。A solution for the present invention is, in the circumferential direction at regular intervals the position of the annular body, the synthetic resin cage pockets are formed in which cylindrical rollers are fitted from the outer diameter side or inner diameter side, the pocket The inner surface of
The pocket is formed in a polygon with three planes, and the inner and outer surfaces of the pocket are guide surfaces that are in line contact with the cylindrical rollers, respectively, and the edge of the end of this guide surface
Are not in contact with the cylindrical rollers, and the gap between the guide surface on the inner diameter side and the cylindrical roller located at the center of the pocket is set to be larger than the gap on the outer diameter side.
【０００８】[0008]
【作用】上記構成において、円筒ころの外周面は、ポケ
ットの案内面に線接触し、案内面の端のエッジには接触
しない。また、温度上昇により保持器全体の径が大径と
なった場合、それまで狭かった外径側の案内面の隙間が
広がり、それまで広かった内径側の隙間が狭まるから、
外径側の隙間と内径側の隙間は同程度の広さになり、内
径側で円筒ころの回転が阻害されることがない。しか
も、ポケットの内径側の案内面および外径側の案内面を
平面にしているので、例えば案内面を円弧面としている
従来例に比べて、製作が容易となるとともに、内・外径
の案内面とポケット中心に位置する円筒ころとの間の２
つの隙間の管理を容易に行うことができる。 In the above construction, the outer peripheral surface of the cylindrical roller comes into line contact with the guide surface of the pocket and does not contact the edge at the end of the guide surface. Also, when the diameter of the entire cage becomes large due to the temperature rise, the gap on the outer diameter side guide surface which was narrow until then widens, and the gap on the inner diameter side which has been widened so far narrows.
The gap on the outer diameter side and the gap on the inner diameter side are approximately the same size, and the rotation of the cylindrical roller on the inner diameter side is not hindered. Only
The guide surface on the inner diameter side and the outer diameter side of the pocket.
Because it is a plane, for example, the guide surface is an arc surface
Compared to the conventional example, the production is easier and the inner and outer diameters are
Between the guideway of the car and the cylindrical roller located in the center of the pocket
Management of the two gaps can be easily performed.
【０００９】[0009]
【実施例】以下、本考案の詳細を図１に示す一実施例に
基づいて説明する。図１は、本考案の一実施例に係る合
成樹脂製保持器の一部を示す断面図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be described below with reference to an embodiment shown in FIG. FIG. 1 is a sectional view showing a part of a synthetic resin cage according to an embodiment of the present invention.
【００１０】この実施例の保持器が、合成樹脂で一体成
形される環状の本体１の周方向等間隔位置に多数のポケ
ット２を形成したものであり、ポケット２が、本体１の
軸方向中央部に設けられ、円筒ころ３が外径側もしくは
内径側から嵌め込まれるようになっている点は、従来の
保持器と同じである。The cage of this embodiment has a large number of pockets 2 formed at equal circumferential positions on an annular main body 1 integrally formed of synthetic resin. This is the same as the conventional cage in that the cylindrical roller 3 is provided on the outer diameter side or the inner diameter side.
【００１１】この実施例の保持器は、ポケット２の内側
面である案内面に特徴がある。すなわち、ポケット２の
内側面は、内径側から外径側にかけて３段の平面２ａ，
２ｂ，２ｃで構成され、内径側の平面２ａと外径側の平
面２ｃとが、それぞれ円筒ころ３の外周面に線接触しう
る案内面となっている。各案内面２ａ，２ｃは、円筒こ
ろ３との線接触個所を中心にその接線方向に広がってい
る。The cage of this embodiment is characterized by a guide surface which is an inner surface of the pocket 2. That is, the inner surface of the pocket 2 has three flat surfaces 2a,
The inner surface 2a and the outer surface 2c are guide surfaces that can make line contact with the outer peripheral surface of the cylindrical roller 3 respectively. Each guide surface 2a, 2c extends in a tangential direction around a line contact point with the cylindrical roller 3.
【００１２】また、各案内面２ａ，２ｃと、ポケット中
心Ｐｏに位置する円筒ころ３との間には、隙間α1，α2
が形成されるが、内径側の案内面２ａとの隙間α1は、
外径側の案内面２ｃとの隙間α2より所要の差分だけ大
きく設定されている（α1＞α2）。この両隙間α1，α2
の間の差分は、熱膨張により生じる保持器全体の径の増
大量に対応して決められる。図中、Ｌは、保持器の中心
を通る半径方向線である。なお、ポケット２の案内面２
ａ，２ｃを平面にしているので、例えば案内面を円弧面
としている従来例に比べて、製作が容易となるととも
に、前述の隙間α 1 ，α 2 の管理を容易に行うことができ
る。 Further, gaps α 1 and α 2 are provided between the guide surfaces 2a and 2c and the cylindrical roller 3 located at the center Po of the pocket.
Is formed, but the gap α 1 between the guide surface 2a on the inner diameter side is
Only the required difference from the gap alpha 2 between the guide face 2c of the outer diameter side is larger is set (α 1> α 2). These gaps α 1 and α 2
Is determined according to the increase in the diameter of the entire cage caused by thermal expansion. In the figure, L is a radial line passing through the center of the cage. The guide surface 2 of the pocket 2
Since a and 2c are flat, for example, the guide surface is an arc surface
It is easier to manufacture than the conventional example
In addition, it is possible to easily manage the gaps α 1 and α 2 described above.
You.
【００１３】上記構成において、回転中、円筒ころ３の
外周面は、ポケット２の各案内面２ａ，２ｃの中間部分
に線接触する。各案内面２ａ，２ｃは、円筒ころ３との
線接触個所を中心にその接線方向に広がっているから、
その端のエッジは円筒ころ３の外周面に接触しない。し
たがって、潤滑剤の掻き取りは生じない。In the above configuration, during rotation, the outer peripheral surface of the cylindrical roller 3 comes into line contact with an intermediate portion between the guide surfaces 2a and 2c of the pocket 2. Since each of the guide surfaces 2a and 2c extends in a tangential direction around a line contact point with the cylindrical roller 3,
The edge of the end does not contact the outer peripheral surface of the cylindrical roller 3. Therefore, no scraping of the lubricant occurs.
【００１４】また、温度上昇により保持器全体の径が大
径となった場合、それまで狭かった外径側の案内面２ｃ
と円筒ころ３との隙間α2が広がり、それまで広かった
内径側の案内面２ａとの隙間α1が狭まるから、外径側
の隙間α2と内径側の隙間α1は同程度の広さになり、内
径側で円筒ころ３の回転が阻害されることがない。When the diameter of the entire cage becomes large due to a rise in temperature, the guide surface 2c on the outer diameter side, which was narrow until then, is reduced.
A gap alpha 2 is spread between the cylindrical rollers 3, since it until the gap alpha 1 between the guide face 2a of the wider had an inner diameter side is narrowed, the gap alpha 1 clearance alpha 2 and the inner diameter side of the outer diameter side wide comparable In other words, the rotation of the cylindrical roller 3 is not hindered on the inner diameter side.
【００１５】なお、上記の実施例では、ポケット２の内
径側の案内面２ａと外径側の案内面２ｃとをともに平面
で構成したが、各案内面２ａ，２ｃは円筒ころ３の外周
面と線接触しうるものであればよく、円筒ころ３の外周
面より大幅に曲率が大きい曲面で構成することもでき
る。In the above embodiment, the guide surface 2a on the inner diameter side and the guide surface 2c on the outer diameter side of the pocket 2 are both formed as flat surfaces, but the respective guide surfaces 2a and 2c are formed on the outer peripheral surface of the cylindrical roller 3. Any shape can be used as long as it can be in line contact with the cylindrical roller 3, and a curved surface having a significantly larger curvature than the outer peripheral surface of the cylindrical roller 3 can be used.
【００１６】[0016]
【考案の効果】以上述べたように、本考案によれば、円
筒ころはポケットの案内面と線接触し、案内面の端のエ
ッジとは接触しないから、潤滑剤の掻き取りが発生せ
ず、潤滑が良好に維持される。As described above, according to the present invention, since the cylindrical roller makes line contact with the guide surface of the pocket and does not contact the edge of the end of the guide surface, no scraping of the lubricant occurs. , Good lubrication is maintained.
【００１７】また、熱膨張により保持器全体の径が大径
となっても、内径側の案内面と円筒ころとの隙間が狭く
なり過ぎることがないから、円筒ころの回転が阻害され
ず、温度上昇時の回転不良が生じない。しかも、ポケッ
トの内径側の案内面および外径側の案内面を平面にして
いるので、例えば案内面を円弧面としている従来例に比
べて、製作が容易となるとともに、内・外径の案内面と
ポケット中心に位置する円筒ころとの間の２つの隙間の
管理を容易に行うことができる。 Further, even if the diameter of the entire cage becomes large due to thermal expansion, the gap between the guide surface on the inner diameter side and the cylindrical roller does not become too narrow, so that the rotation of the cylindrical roller is not hindered. No rotation failure when the temperature rises. Moreover, pocket
The guide surface on the inner diameter side and the guide surface on the outer diameter side of the
Therefore, for example, compared to the conventional example where the guide surface is an arc surface
In addition to being easy to manufacture, the inner and outer diameter guide surfaces
Two gaps between the cylindrical roller located in the center of the pocket
Management can be performed easily.
【図１】本考案の一実施例に係る合成樹脂製保持器の一
部を示す断面図。FIG. 1 is a sectional view showing a part of a synthetic resin cage according to an embodiment of the present invention.
【図２】従来の合成樹脂製保持器の軸方向に沿って切断
した断面図。FIG. 2 is a cross-sectional view of a conventional synthetic resin cage cut along an axial direction.
【図３】上記従来例の軸直交方向に沿って切断した断面
図。FIG. 3 is a cross-sectional view of the conventional example cut along a direction orthogonal to an axis.
１ 本体 ２ ポケット ２ａ 内径側の案内面 ２ｃ 外径側の案内面 ３ 円筒ころ α1 内径側の隙間 α2 外径側の隙間1 gap clearance alpha 2 the outer diameter side of the guide face 3 cylindrical roller alpha 1 the inner diameter side of the guide face 2c outer diameter side of the main body 2 pockets 2a inner diameter side
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭63−297817（ＪＰ，Ａ) 実開 昭61−190028（ＪＰ，Ｕ) 実公 平３−17055（ＪＰ，Ｙ２) ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-63-297817 (JP, A) JP-A-61-190028 (JP, U) JP 3-17055 (JP, Y2)
Claims (1)
ころが外径側もしくは内径側から嵌め込まれるポケット
が形成されている合成樹脂製保持器において、ポケットの内側面は、内径側から外径側にかけて３段の
平面で多角形に形成され、 ポケットの内径側と外径側の
各平面は、それぞれ円筒ころと線接触する案内面とされ
るとともに、この案内面の端のエッジが円筒ころと非接
触とされ、 内径側の案内面とポケット中心に位置する円筒ころとの
間の隙間が、外径側の隙間より大きく設定されている、
ことを特徴とする円筒ころ軸受用合成樹脂製保持器。1. A synthetic resin cage in which a cylindrical roller is fitted at a circumferentially equidistant position of an annular main body from an outer diameter side or an inner diameter side. Three steps to the outer diameter side
It is formed in a polygonal in plan, of the inner diameter side and outer diameter side of the pocket
Each plane is a guide surface that is in line contact with the cylindrical roller.
And the edge at the end of this guide surface is not in contact with the cylindrical roller.
Is a touch, the gap between the cylindrical rollers positioned on the guide surface and the pocket center on the inner diameter side is set larger than the gap of the outer diameter side,
A synthetic resin cage for a cylindrical roller bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991051746U JP2542251Y2 (en) | 1991-07-04 | 1991-07-04 | Synthetic resin cage for cylindrical roller bearings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991051746U JP2542251Y2 (en) | 1991-07-04 | 1991-07-04 | Synthetic resin cage for cylindrical roller bearings |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH053644U JPH053644U (en) | 1993-01-19 |
| JP2542251Y2 true JP2542251Y2 (en) | 1997-07-23 |
Family
ID=12895497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1991051746U Expired - Fee Related JP2542251Y2 (en) | 1991-07-04 | 1991-07-04 | Synthetic resin cage for cylindrical roller bearings |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2542251Y2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19807160B4 (en) * | 1998-02-20 | 2006-11-02 | Skf Gmbh | Method for producing a sheet metal cage and then manufactured sheet metal cage |
| JP6295621B2 (en) * | 2013-11-25 | 2018-03-20 | 株式会社ジェイテクト | Split cage and roller bearing |
| JP2015102153A (en) * | 2013-11-25 | 2015-06-04 | 株式会社ジェイテクト | Split cage and roller bearing |
| JP2023057850A (en) * | 2021-10-12 | 2023-04-24 | Ntn株式会社 | cylindrical roller bearing |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH049456Y2 (en) * | 1985-05-20 | 1992-03-10 | ||
| JPS63297817A (en) * | 1987-05-29 | 1988-12-05 | Nippon Seiko Kk | Bearing with guide cage for rolling element |
| JPH0317055U (en) * | 1989-07-03 | 1991-02-20 |
-
1991
- 1991-07-04 JP JP1991051746U patent/JP2542251Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH053644U (en) | 1993-01-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |