JP2003021155A - Fixing structure for rolling bearing - Google Patents
Fixing structure for rolling bearingInfo
- Publication number
- JP2003021155A JP2003021155A JP2001208653A JP2001208653A JP2003021155A JP 2003021155 A JP2003021155 A JP 2003021155A JP 2001208653 A JP2001208653 A JP 2001208653A JP 2001208653 A JP2001208653 A JP 2001208653A JP 2003021155 A JP2003021155 A JP 2003021155A
- Authority
- JP
- Japan
- Prior art keywords
- inner ring
- rolling bearing
- rotary shaft
- fitted
- groove
- 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.)
- Pending
Links
Landscapes
- Rolling Contact Bearings (AREA)
- Mounting Of Bearings Or Others (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、回転軸に圧入嵌
合される転がり軸受の内輪の固定構造に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixing structure for an inner ring of a rolling bearing which is press-fitted to a rotary shaft.
【０００２】[0002]
【従来の技術】従来、回転軸に転がり軸受を嵌合して固
定する場合、軸に軸受の内輪を圧入して行うことがあ
る。しかし、このような内輪の圧入嵌合のみによる固定
構造においては、内輪の肉厚が不足すると、内輪回転の
影響からどうしてもクリープが発生しやすいという問題
がある。この内輪のクリープが発生するとこれだけに止
まらず、場合によっては、内輪が回転軸から軸方向に移
動して抜け出してしまう恐れがある。2. Description of the Related Art Conventionally, when a rolling bearing is fitted and fixed to a rotary shaft, the inner ring of the bearing may be press-fitted into the shaft. However, in such a fixing structure in which only the inner ring is press-fitted, there is a problem that if the thickness of the inner ring is insufficient, creep tends to occur due to the influence of the inner ring rotation. If the inner ring creeps, it does not stop there, and in some cases, the inner ring may move axially from the rotary shaft and slip out.
【０００３】そこで、上述の従来構造の問題点を解決す
るため、例えば、回転軸に形成したねじ部にナットを締
め込んで内輪を軸方向に固定する構造や、あるいは回転
軸に周溝を形成して、この周溝に止め輪を嵌合して内輪
を軸方向に固定すること等が行われている。Therefore, in order to solve the above-mentioned problems of the conventional structure, for example, a structure in which a nut is tightened in a screw portion formed on a rotary shaft to fix an inner ring in the axial direction, or a circumferential groove is formed on the rotary shaft. Then, a retaining ring is fitted in the circumferential groove to fix the inner ring in the axial direction.
【０００４】[0004]
【発明が解決しようとする課題】しかし、上述のナット
の締め付けによる内輪の固定構造においては、部品が大
型化してコンパクトにならず、また、止め輪による内輪
の固定構造においては、止め輪の強度上、厚みを大きく
しなければならず、回転軸の周溝への嵌合作業がやりに
くいという問題がある。However, in the fixing structure of the inner ring by tightening the nuts described above, the parts become large and compact, and in the fixing structure of the inner ring by the retaining ring, the strength of the retaining ring is increased. In addition, the thickness must be increased, and there is a problem that it is difficult to fit the rotary shaft into the circumferential groove.
【０００５】さらには、ナットや止め輪による固定構造
においては、いずれも内輪の軸方向の抜けに対しては効
果があるものの、円周方向へのクリープ対策としては、
十分でない。Further, in the fixing structure using the nut and the retaining ring, both of them are effective for the axial disengagement of the inner ring, but as a countermeasure against the creep in the circumferential direction,
not enough.
【０００６】この発明は、かかる従来技術の問題点を解
決することを目的とし、回転軸に圧入し嵌合された転が
り軸受の内輪のクリープおよび軸方向への抜けを防止す
る転がり軸受の固定構造を提供するものである。An object of the present invention is to solve the above-mentioned problems of the prior art, and a rolling bearing fixing structure for preventing the inner ring of a rolling bearing press-fitted and fitted into a rotary shaft from creeping and coming off in the axial direction. Is provided.
【０００７】[0007]
【課題を解決するための手段】上記課題を解決する手段
として、請求項１の発明においては、回転軸に転がり軸
受の内輪を圧入嵌合した転がり軸受の固定構造におい
て、上記回転軸の外周面に半径方向に延びる突部を形成
するとともに、上記転がり軸受の内輪の内周面に、偏心
溝と、内輪端面から偏心溝の最深部箇所に通じかつ偏心
溝の円周方向幅より小さい円周方向幅を有する軸方向溝
を形成し、上記回転軸の突部を上記内輪の軸方向溝を介
して偏心溝内に嵌合したことを特徴とするものである。As a means for solving the above-mentioned problems, in the invention of claim 1, in the rolling bearing fixing structure in which the inner ring of the rolling bearing is press-fitted to the rotating shaft, the outer peripheral surface of the rotating shaft is provided. And a eccentric groove on the inner peripheral surface of the inner ring of the rolling bearing, which extends from the inner ring end surface to the deepest part of the eccentric groove and is smaller than the circumferential width of the eccentric groove. An axial groove having a directional width is formed, and the projection of the rotary shaft is fitted into the eccentric groove via the axial groove of the inner ring.
【０００８】また、請求項２の発明においては、上記回
転軸の突部を、回転軸に形成した穴部に圧入固定したピ
ンにより形成したことを特徴とする。Further, the invention of claim 2 is characterized in that the projection of the rotary shaft is formed by a pin press-fitted and fixed in a hole formed in the rotary shaft.
【０００９】[0009]
【発明の実施の形態】以下、この発明を図１及び図２に
もとづき説明する。図１は回転軸１に組み込む前の円筒
ころ軸受２であり、図２は回転軸１に円筒ころ軸受２を
組み込んだ状態図である。BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below with reference to FIGS. FIG. 1 shows a cylindrical roller bearing 2 before being incorporated in a rotary shaft 1, and FIG. 2 is a state diagram in which a cylindrical roller bearing 2 is incorporated in a rotary shaft 1.
【００１０】円筒ころ軸受２は、外輪２１、内輪２０、
内外輪２０，２１間に介在され保持器２２にて円周方向
に間隔をおいて保持された円筒ころ２３を備えている。The cylindrical roller bearing 2 includes an outer ring 21, an inner ring 20,
Cylindrical rollers 23, which are interposed between the inner and outer rings 20, 21 and are held by a cage 22 at circumferential intervals, are provided.
【００１１】また、上記内輪２０の内周面２５には、内
輪端面２７から軸方向任意箇所でかつ円周方向の所定領
域に偏心溝２６が形成されるとともに、内輪２０の端面
２７からこの偏心溝２６の最深部箇所２６ａに通じかつ
偏心溝２６の円周方向幅Ｓ１より小さい円周方向幅Ｓ２
を有する軸方向溝２８が形成されている。Further, an eccentric groove 26 is formed on the inner peripheral surface 25 of the inner ring 20 from an end surface 27 of the inner ring at a predetermined axial position and in a predetermined circumferential region, and the eccentricity is formed from the end surface 27 of the inner ring 20. A circumferential width S2 communicating with the deepest portion 26a of the groove 26 and smaller than the circumferential width S1 of the eccentric groove 26.
Is formed with an axial groove 28.
【００１２】さらに、内輪２０が圧入嵌合される回転軸
１には、その外周面１０の任意の１箇所に、上記内輪２
０の軸方向溝２８に嵌入して通過し、偏心溝２６内に嵌
合される半径方向突部１１が形成されている。この半径
方向に延びる突部１１は、例えば図２に示されるよう
に、回転軸１に設けられた有底穴１３に圧入されたピン
１２から形成されるが、上記内輪２０の軸方向溝２８を
通じて偏心溝２６内に納まる突部であればよい。しかし
ピン１２の使用した構成が最も簡単で安価である。な
お、３は外輪２１が嵌合されるハウジングである。Further, on the rotary shaft 1 into which the inner ring 20 is press-fitted, the inner ring 2 is provided at an arbitrary position on the outer peripheral surface 10.
A radial projection 11 is formed that fits into and passes through the zero axial groove 28 and is fitted into the eccentric groove 26. The projection 11 extending in the radial direction is formed of a pin 12 press-fitted into a bottomed hole 13 provided in the rotary shaft 1 as shown in FIG. 2, for example, but the axial groove 28 of the inner ring 20 is formed. It is only necessary that the projection is accommodated in the eccentric groove 26 through. However, the configuration using the pin 12 is the simplest and cheapest. Reference numeral 3 is a housing into which the outer ring 21 is fitted.
【００１３】また、上記内輪２０の軸方向溝２８及び偏
心溝２６の最深部のそれぞれの半径方向深さは回転軸１
の半径方向突部１１が軸方向に通過あるいは溝内に納ま
る深さに少なくとも形成されている。Further, the radial depths of the deepest portions of the axial groove 28 and the eccentric groove 26 of the inner ring 20 are the same as those of the rotary shaft 1.
Is formed at least to a depth such that it can pass axially or fit into the groove.
【００１４】この発明は上記構成を有しているため、回
転軸１の回転中すなわち内輪２０の回転中に、回転軸１
に圧入嵌合された内輪２０がクリープをした場合でも、
ピン１２等の突部１１が偏心溝２６内で引かかり、それ
以上のクリープが防止されることになる。又、クリープ
が発生した場合、ピン１２等の突部１１は、円周方向に
回って偏心溝２６内にて喰い込むため、軸方向溝２８か
ら軸線上で外れることになるため、内輪２０はピン１２
等の突部１１が偏心溝２６内で引かかり、軸方向に抜け
出すことはない。また、内輪２０のクリープ及び軸方向
の抜けを防止できるため、内輪２０の厚みを薄くでき、
軸受のコンパクト化につながる。Since the present invention has the above structure, the rotating shaft 1 is rotated while the rotating shaft 1 is rotating, that is, while the inner ring 20 is rotating.
Even if the inner ring 20 press-fitted to
The protrusion 11 such as the pin 12 is caught in the eccentric groove 26, and further creep is prevented. Further, when creep occurs, the projections 11 such as the pins 12 rotate in the circumferential direction and bite in the eccentric grooves 26, so that they are disengaged from the axial grooves 28 on the axial line. Pin 12
The protrusions 11 and the like are caught in the eccentric groove 26 and do not slip out in the axial direction. Further, since it is possible to prevent the inner ring 20 from creeping and coming off in the axial direction, the thickness of the inner ring 20 can be reduced,
This leads to downsizing of bearings.
【００１５】[0015]
【発明の効果】以上のように、請求項１の本発明によれ
ば、内輪の偏心溝内に回転軸に立設した半径方向突部を
嵌入するようにしたため、内輪のクリープ及び軸方向へ
の抜けが効果的に防止される。As described above, according to the first aspect of the present invention, since the radial projections erected on the rotary shaft are fitted in the eccentric grooves of the inner ring, the creep of the inner ring and the axial direction can be improved. Is effectively prevented from coming off.
【００１６】また請求項２の本発明によれば、回転軸に
設けた半径方向突部が、回転軸に形成された有底穴に嵌
入して突設したピン構造から形成されているため、構造
が簡単でかつ安価となる。According to the second aspect of the present invention, the radial projection provided on the rotary shaft is formed of a pin structure which is fitted into a bottomed hole formed on the rotary shaft and projects. The structure is simple and inexpensive.
【図１】（Ａ）は本発明の円筒ころ軸受の内輪の正面
図、（Ｂ）は本発明の円筒ころ軸受の縦断面図である。1A is a front view of an inner ring of a cylindrical roller bearing of the present invention, and FIG. 1B is a vertical sectional view of a cylindrical roller bearing of the present invention.
【図２】本発明の円筒ころ軸受を回転軸に組み込んだ状
態図である。FIG. 2 is a state diagram in which the cylindrical roller bearing of the present invention is incorporated in a rotary shaft.
１ 回転軸 ２ 円筒ころ軸受 １０ 外周面 １１ 半径方向突部 １２ ピン １３ 有底穴 ２０ 内輪 ２１ 外輪 ２２ 保持器 ２３ 円筒ころ ２５ 内周面 ２６ 偏心溝 ２６ａ 最深部箇所 ２７ 端面 ２８ 軸方向溝 1 rotation axis 2 Cylindrical roller bearing 10 outer peripheral surface 11 Radial protrusion 12 pin 13 bottomed holes 20 inner ring 21 outer ring 22 cage 23 cylindrical rollers 25 Inner surface 26 Eccentric groove 26a Deepest part 27 Edge 28 Axial groove
Claims (2)
た転がり軸受の固定構造において、上記回転軸の外周面
に半径方向に延びる突部を形成するとともに、上記転が
り軸受の内輪の内周面に、偏心溝と、内輪端面から偏心
溝の最深部箇所に通じかつ偏心溝の円周方向幅より小さ
い円周方向幅を有する軸方向溝を形成し、上記回転軸の
突部を上記内輪の軸方向溝を介して偏心溝内に嵌合した
ことを特徴とする転がり軸受の固定構造。1. In a structure for fixing a rolling bearing in which an inner ring of a rolling bearing is press-fitted to a rotary shaft, a protrusion extending in a radial direction is formed on an outer peripheral surface of the rotating shaft, and an inner periphery of the inner ring of the rolling bearing is formed. An eccentric groove, and an axial groove that extends from the end surface of the inner ring to the deepest part of the eccentric groove and has a circumferential width smaller than the circumferential width of the eccentric groove. A rolling bearing fixing structure, characterized in that the rolling bearing is fitted into the eccentric groove through the axial groove.
穴部に圧入固定したピンにより形成したことを特徴とす
る請求項１に記載の転がり軸受の固定構造。2. The fixing structure for a rolling bearing according to claim 1, wherein the protrusion of the rotary shaft is formed by a pin press-fitted and fixed in a hole formed in the rotary shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001208653A JP2003021155A (en) | 2001-07-10 | 2001-07-10 | Fixing structure for rolling bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001208653A JP2003021155A (en) | 2001-07-10 | 2001-07-10 | Fixing structure for rolling bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003021155A true JP2003021155A (en) | 2003-01-24 |
Family
ID=19044436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001208653A Pending JP2003021155A (en) | 2001-07-10 | 2001-07-10 | Fixing structure for rolling bearing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003021155A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005032888A1 (en) * | 2005-07-14 | 2007-01-18 | Schaeffler Kg | Bearing ring of wheel bearing of vehicle, comprises securing ring accommodated in complementary groove |
| CN100412399C (en) * | 2005-04-15 | 2008-08-20 | 斯奈克玛 | Connector arrangement between an inner ring bearing and a joint, the ring and joint adapted to such an arrangement and the turbomachine equipped therewith |
| JP2009210034A (en) * | 2008-03-05 | 2009-09-17 | Nsk Ltd | Thrust roller bearing device |
| DE102019134268A1 (en) * | 2019-12-13 | 2021-06-17 | Schaeffler Technologies AG & Co. KG | Storage cassette |
-
2001
- 2001-07-10 JP JP2001208653A patent/JP2003021155A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100412399C (en) * | 2005-04-15 | 2008-08-20 | 斯奈克玛 | Connector arrangement between an inner ring bearing and a joint, the ring and joint adapted to such an arrangement and the turbomachine equipped therewith |
| DE102005032888A1 (en) * | 2005-07-14 | 2007-01-18 | Schaeffler Kg | Bearing ring of wheel bearing of vehicle, comprises securing ring accommodated in complementary groove |
| JP2009210034A (en) * | 2008-03-05 | 2009-09-17 | Nsk Ltd | Thrust roller bearing device |
| DE102019134268A1 (en) * | 2019-12-13 | 2021-06-17 | Schaeffler Technologies AG & Co. KG | Storage cassette |
| DE102019134268B4 (en) | 2019-12-13 | 2023-08-10 | Schaeffler Technologies AG & Co. KG | Bearing arrangement with a bearing cassette and with a machine element |
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