JP2518956Y2 - Shell needle roller bearings - Google Patents
Shell needle roller bearingsInfo
- Publication number
- JP2518956Y2 JP2518956Y2 JP1990400545U JP40054590U JP2518956Y2 JP 2518956 Y2 JP2518956 Y2 JP 2518956Y2 JP 1990400545 U JP1990400545 U JP 1990400545U JP 40054590 U JP40054590 U JP 40054590U JP 2518956 Y2 JP2518956 Y2 JP 2518956Y2
- Authority
- JP
- Japan
- Prior art keywords
- press
- needle roller
- outer ring
- bearing
- inner diameter
- 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】この考案は、薄い鋼板でプレス成
形された外輪を有するシェル形針状ころ軸受に関するも
のである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shell type needle roller bearing having an outer ring which is press-formed with a thin steel plate.
【０００２】[0002]
【従来の技術】シェル形針状ころ軸受は、図３に示すよ
うに、外輪１１と、保持器１２および針状ころ１３とか
らなる軸受であり、上記外輪１１は円筒部１４の両端か
ら内向きにフランジ１５を設けた構成とされ、薄い鋼板
でプレス成形されている。このような針状ころ軸受は、
外輪１１に軌道輪としての機能を持たせるため、軸受箱
１６に対して圧入する取付けが採用される。2. Description of the Related Art A shell type needle roller bearing is a bearing composed of an outer ring 11, a cage 12 and a needle roller 13, as shown in FIG. The flange 15 is provided in the direction, and it is press-formed with a thin steel plate. Such needle roller bearings are
In order to give the outer ring 11 a function as a bearing ring, a press-fitting mounting to the bearing box 16 is adopted.
【０００３】軸受箱１６には、図３に示すように、閉塞
壁１７を有するものがあり、このような軸受箱１６は、
開口側端部１８と奥側端部１９とで剛性が異なり、開口
側端部１８は奥側端部１９に比較して外径方向に拡がり
易い。As shown in FIG. 3, there is a bearing box 16 having a closing wall 17, and such a bearing box 16 is
Since the opening-side end portion 18 and the back-side end portion 19 have different rigidity, the opening-side end portion 18 is more likely to expand in the outer diameter direction than the back-side end portion 19.
【０００４】[0004]
【考案が解決しようとする課題】ところで、従来の針状
ころ軸受における外輪１１は、円筒部１４の外径および
内径が軸方向の全体において同一径であるため、閉塞壁
１７を有する軸受箱１６に圧入すると、軸受箱１５の軸
方向両端における剛性の相違によって外輪１１の軸方向
両端で内径方向への縮径量に差が生じ、外輪１１の圧入
方向先端部が圧入方向後端部より大きく縮径する。In the outer ring 11 of the conventional needle roller bearing, the outer diameter and the inner diameter of the cylindrical portion 14 have the same diameter in the entire axial direction, so that the bearing box 16 having the closing wall 17 is formed. When press-fitting into the bearing housing 15, the difference in rigidity at both axial ends of the bearing box 15 causes a difference in the amount of radial reduction in the inner diameter at both axial ends of the outer ring 11, and the front end of the outer ring 11 in the press-fitting direction is larger than the rear end. Reduce the diameter.
【０００５】このため、軸受箱１６への針状ころ軸受の
組付状態において、圧入方向先端側のころ内接円径ｄ１
は圧入方向後端側のころ内接内径ｄ２より小さくなり、
圧入方向先端側でころ１３のエッジロードによる局部的
な応力増加が起こり、焼付き、早期剥離等が生じ易く、
軸受寿命が低下すると共に、ころ１３のスキューによる
騒音等の問題が生じる。Therefore, when the needle roller bearing is assembled to the bearing housing 16, the diameter d 1 of the roller inscribed circle on the front end side in the press-fitting direction is set.
Is smaller than the roller inscribed inner diameter d 2 on the rear end side in the press-fitting direction,
Local stress increases due to the edge load of the roller 13 on the front end side in the press-fitting direction, and seizure, premature peeling, etc. easily occur,
The bearing life is shortened, and problems such as noise due to the skew of the rollers 13 occur.
【０００６】この考案は、閉塞壁を有する軸受箱への針
状ころ軸受の組付けにおいて、針状ころのころ内接内径
を軸方向の全体にわたって均一化することを技術的課題
としている。In the present invention, it is a technical subject to make the inner diameter of the needle roller inscribed in the roller uniform in the axial direction in the assembly of the needle roller bearing in the bearing box having the closed wall.
【０００７】[0007]
【課題を解決するための手段】上記の課題を解決するた
めに、この考案においては、円筒部の両端から内向きに
フランジを設けた外輪が薄い鋼板でプレス形成され、そ
の外輪が閉塞端を有する軸受箱内に圧入により取付けら
れるシェル形針状ころ軸受において、前記円筒部の外径
を軸方向の全長にわたって同一径とし、上記円筒部の内
径を、両端で１／２００以下の径差をもち、圧入方向先
端側に向けて順次に大きいテーパ形状とした構成を採用
したのである。In order to solve the above problems, in the present invention, an outer ring having flanges provided inwardly from both ends of a cylindrical portion is press-formed with a thin steel plate, and the outer ring has a closed end. In a shell needle roller bearing that is mounted by press-fitting in a bearing box having the same, the outer diameter of the cylindrical portion is the same throughout the entire axial length, and the inner diameter of the cylindrical portion has a diameter difference of 1/200 or less at both ends. In this case, the taper shape is gradually increased toward the front end side in the press-fitting direction.
【０００８】[0008]
【作用】上記針状ころ軸受を閉塞端を有する軸受箱に圧
入すると、円筒部の軸方向両端において、内径の大きい
圧入方向先端部が圧入方向後端部より内径方向に大きく
縮径し、ころの内接内径が軸方向の全体にわたって均一
化される。When the needle roller bearing is press-fitted into the bearing box having the closed end, the front end in the press-fitting direction with a large inner diameter is reduced in diameter inward from the rear end in the press-fitting direction at both axial ends of the cylindrical portion, The inscribed inner diameter of is uniformed over the entire axial direction.
【０００９】[0009]
【実施例】図１は、この考案に係る針状ころ軸受の一実
施例を示し、外輪１、保持器２および針状ころ３からな
る。1 shows an embodiment of a needle roller bearing according to the present invention, which comprises an outer ring 1, a cage 2 and a needle roller 3.
【００１０】外輪１は、図２に示すように、薄い鋼板で
プレス成形され、円筒部４の両端から内向きに一対のフ
ランジ５を設けた構成とされている。円筒部４の内径は
テーパとされ、軸受箱に先に圧入される圧入方向先端部
６の内径ｄ３は圧入方向後端部７の内径ｄ４より大きく
なり、その径差は１／２００以下とされている。 また、円筒部４の外径Ｄは、軸方向の全長にわたって同
一径とされている。このため、円筒部４の肉厚は、圧入
方向後端から圧入方向先端に向けて次第に薄くなる。As shown in FIG. 2, the outer ring 1 is press-formed with a thin steel plate and has a pair of flanges 5 provided inward from both ends of the cylindrical portion 4. The inner diameter of the cylindrical portion 4 is tapered, and the inner diameter d 3 of the front end portion 6 in the press-fitting direction that is first press-fitted into the bearing box is larger than the inner diameter d 4 of the rear end portion 7 in the press-fitting direction, and the diameter difference is 1/200 or less. It is said that. The outer diameter D of the cylindrical portion 4 is the same throughout the entire axial length. Therefore, the wall thickness of the cylindrical portion 4 gradually decreases from the rear end in the press-fitting direction to the front end in the press-fitting direction.
【００１１】上記の構成から成るシェル形針状ころ軸受
を圧入によって図１に示すように、閉塞壁１７を有する
軸受箱１６に組付けると、外輪１の圧入方向先端部６は
圧入方向後端部７より内径方向に大きく縮径するから、
円筒部４の内径は、軸方向の全長にわたって均一化し、
針状ころ３のころ内接内径は軸方向の全長にわたって均
一化する。As shown in FIG. 1, when the shell needle roller bearing having the above-mentioned structure is press-fitted to the bearing box 16 having the closing wall 17, the front end 6 of the outer ring 1 in the press-fitting direction is the rear end in the press-fitting direction. Since the diameter is greatly reduced from the part 7 in the inner diameter direction,
The inner diameter of the cylindrical portion 4 is uniform over the entire length in the axial direction,
The inner diameter of the needle roller 3 inscribed in the roller is made uniform over the entire length in the axial direction.
【００１２】[0012]
【考案の効果】以上のように、この考案に係るシェル形
針状ころ軸受においては、外輪円筒部の内径を圧入方向
後端側から先端に向けて徐々に大きくなるテーパ形状と
したので、閉塞壁を有する軸受箱の組付けにおいて、円
筒部の内径を軸方向の全長にわって均一化することがで
きる。このため、針状ころのころ内接内径が軸方向の全
体にわたって均一化し、ころのエッジロードによる局部
的な応力増加を防止して軸受寿命を増大せしめ、ころの
スキューによる騒音の発生を防止することができる。As described above, in the shell needle roller bearing according to the present invention, since the inner diameter of the outer ring cylindrical portion is tapered so as to gradually increase from the rear end side in the press-fitting direction to the front end, blockage occurs. When assembling the bearing box having the wall, the inner diameter of the cylindrical portion can be made uniform over the entire length in the axial direction. Therefore, the inner diameter of the needle roller inscribed in the roller is made uniform over the entire axial direction, the local stress increase due to the edge load of the roller is prevented, the bearing life is extended, and the noise due to the skew of the roller is prevented. be able to.
【図１】この考案に係るシェル形針状ころ軸受の組付け
状態を示す断面図FIG. 1 is a sectional view showing an assembled state of a shell needle roller bearing according to the present invention.
【図２】同上の軸受の外輪の断面図FIG. 2 is a cross-sectional view of an outer ring of the above bearing.
【図３】従来のシェル形針状ころ軸受の組付け状態を示
す断面図FIG. 3 is a cross-sectional view showing an assembled state of the conventional shell needle roller bearing.
１ 外輪 ４ 円筒部 ５ フランジ 1 Outer ring 4 Cylindrical part 5 Flange
Claims (1)
た外輪が薄い鋼板でプレス形成され、その外輪が閉塞端
を有する軸受箱内に圧入により取付けられるシェル形針
状ころ軸受において、前記円筒部の外径を軸方向の全長
にわたって同一径とし、上記円筒部の内径を、両端で１
／２００以下の径差をもち、圧入方向先端側に向けて順
次に大きいテーパ形状としたことを特徴とするシェル形
針状ころ軸受。1. A shell-shaped needle roller bearing in which an outer ring having flanges provided inwardly from both ends of a cylindrical portion is press-formed with a thin steel plate, and the outer ring is press-fitted into a bearing box having a closed end, wherein: The outer diameter of the cylinder is the same throughout the entire length in the axial direction, and the inner diameter of the cylinder is 1 at both ends.
A shell-shaped needle roller bearing having a diameter difference of / 200 or less and having a taper shape that is gradually increased toward the front end side in the press-fitting direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990400545U JP2518956Y2 (en) | 1990-12-13 | 1990-12-13 | Shell needle roller bearings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990400545U JP2518956Y2 (en) | 1990-12-13 | 1990-12-13 | Shell needle roller bearings |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0488520U JPH0488520U (en) | 1992-07-31 |
| JP2518956Y2 true JP2518956Y2 (en) | 1996-12-04 |
Family
ID=31878773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990400545U Expired - Fee Related JP2518956Y2 (en) | 1990-12-13 | 1990-12-13 | Shell needle roller bearings |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2518956Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014211228A (en) * | 2013-04-03 | 2014-11-13 | 日本精工株式会社 | Rotation support device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5484156A (en) * | 1977-12-16 | 1979-07-04 | Ntn Toyo Bearing Co Ltd | Shell-shaped roller bearing |
| JPS6219996Y2 (en) * | 1986-05-15 | 1987-05-21 |
-
1990
- 1990-12-13 JP JP1990400545U patent/JP2518956Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0488520U (en) | 1992-07-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |