JP4605026B2 - Shell roller bearing - Google Patents

Shell roller bearing Download PDF

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JP4605026B2
JP4605026B2 JP2006006073A JP2006006073A JP4605026B2 JP 4605026 B2 JP4605026 B2 JP 4605026B2 JP 2006006073 A JP2006006073 A JP 2006006073A JP 2006006073 A JP2006006073 A JP 2006006073A JP 4605026 B2 JP4605026 B2 JP 4605026B2
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outer ring
roller bearing
shell
retaining
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JP2007187248A (en
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昇 高橋
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JTEKT Corp
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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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings
    • F16C33/588—Races of sheet metal
    • 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
    • F16C19/44—Needle bearings
    • F16C19/46—Needle bearings with one row or needles
    • F16C19/466—Needle bearings with one row or needles comprising needle rollers and an outer ring, i.e. subunit without inner ring

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)

Description

本発明は、圧入ハウジングよりの抜け防止対策を施した外輪を備えたシェル形ころ軸受に関するものである。   The present invention relates to a shell-type roller bearing provided with an outer ring that is provided with a measure for preventing it from coming out of a press-fit housing.

自動車用スタータ、カークーラコンプレッサなどの電装補機やオートマチックトランスミッションなどには、従来、ソリッド形軸受が用いられていたが、近年、コスト上の問題もあってシェル形ころ軸受が多く用いられている。
このようなシェル形ころ軸受は、一般的にその外輪（いわゆるシェル）は薄鋼板により作成されており、従って、変形の面より相手ハウジングとの嵌め合いは比較的軽度の嵌め合いが適用される。特にハウジング側の材質として、Ａｌ合金が使用されるケースでは、その熱膨張や剛性の差から使用時に嵌め合いは緩み勝手となり、最悪の場合には軸受けの抜けトラブルに結び付く場合もある。
このため抜け止めの対策として、色々な工夫がなされている（例えば、特許文献１参照）。 Solid type bearings have been used in the past for electrical accessories such as starters for automobiles, car cooler compressors, and automatic transmissions. In recent years, however, shell type roller bearings are often used due to cost problems. .
In such a shell-type roller bearing, the outer ring (so-called shell) is generally made of a thin steel plate, and therefore, a relatively light fit is applied to the mating housing in terms of deformation. . In particular, in the case where an Al alloy is used as the material on the housing side, the fitting is loosened at the time of use due to the difference in thermal expansion and rigidity, and in the worst case, it may lead to a problem of the bearing being disconnected.
For this reason, various measures have been taken as measures against retaining (for example, see Patent Document 1).

実開平２−４０３０号公報（図１−３）Japanese Utility Model Publication No. 2-4030 (Fig. 1-3)

特許文献１のシェル形ころ軸受では、外輪にハウジング設けた嵌合凹部と嵌合する嵌合凸部を設け、この両部を嵌め合わせることにより抜けを防止するものである。
これはこれで或程度の抜け防止効果を期待できるものではあるが、基本的にハウジング側に嵌合凹部を精度良く加工する必要があり、これは可成りのコストアップを伴うものであった。 In the shell-type roller bearing of Patent Document 1, a fitting convex part that fits with a fitting concave part provided in a housing is provided on the outer ring, and the two parts are fitted together to prevent the slipping.
Although this can be expected to have a certain degree of prevention effect, basically, it is necessary to accurately process the fitting recess on the housing side, which is accompanied by a considerable cost increase.

本発明は、上記の課題を解決するためになされたもので、製造が容易で組立性が良い、抜け対策用のシェル形ころ軸受を提供することを目的としたものである。   The present invention has been made in order to solve the above-described problems, and an object of the present invention is to provide a shell-type roller bearing that is easy to manufacture and has good assemblability, and that is used to prevent falling.

本発明のシェル形ころ軸受は、以下のとおりのものである。
１）鋼板の円筒体からなり、その両端縁部にカシメ加工により中心に向かって突出する突出部を有する外輪を備えたシェル形ころ軸受において、
前記外輪の外周面に少なくとも１条の周状の、または少なくとも１外周線上に等分に配列された爪状の、抜け止め用微少凸部を備え、該抜け止め用微少凸部はその外周部が外輪圧入方向に向かって小径となるテーパ形状を有しており、
前記テーパ形状の抜け止め用微少凸部の大径側の外輪外周面からの突出量は、その位置における成形時により生じた外周面からの中凹量に相当する量であり、
前記テーパ形状の抜け止め用微少凸部が、前記外輪の軸方向両端の間において前記中凹量だけ凹んでいる中凹形状部に設けられているものである。
２）また、前記抜け止め用微少凸部が、少なくとも２条または２外周上以上で構成されており、各条または各外周上における微少凸部のテーパ形状の最大突出部は、外輪圧入方向に向かって漸次小さく設計されているものである。
３）また、前記テーパ形状の抜け止め用微少凸部は、外輪圧入方向に向かう側のテーパエッジ部をＲ形状とし、反対側のテーパエッジ部をシャープエッジとしたものである。 The shell type roller bearing of the present invention is as follows.
1) In a shell-type roller bearing comprising a cylindrical body of a steel plate and having an outer ring having protrusions protruding toward the center by crimping at both end edges thereof,
The outer ring is provided with at least one circumferential protrusion or at least one claw-shaped minute convex part for retaining that is arranged on the outer circumferential line, and the minute convex part for retaining the outer peripheral part. Has a tapered shape with a smaller diameter in the outer ring press-fitting direction,
The amount of protrusion from the outer peripheral surface of the outer ring on the large diameter side of the taper-shaped micro-projection for retaining is an amount corresponding to the amount of concave from the outer peripheral surface generated by molding at that position,
The taper-shaped minute convex portion for retaining is provided in a middle concave portion that is recessed by the amount of the middle concave portion between both axial ends of the outer ring.
2) Further, the micro-projection for preventing slipping is configured with at least two or two or more outer circumferences, and the taper-shaped maximum projecting portion of each micro-projection on each or each outer circumference is in the outer ring press-fitting direction. It is designed to gradually become smaller.
3) Further, the taper-shaped micro-projection for preventing slipping has a tapered edge portion on the side toward the outer ring press-fitting direction as an R shape and a tapered edge portion on the opposite side as a sharp edge.

４）なお、前記周状の抜け止め用微少凸部は、同一円周またはスパイラル状よりなる。4) The circumferential minute convex portions for retaining the outer periphery have the same circumference or spiral shape.
５）さらに、前記テーパ形状の抜け止め用微少凸部の大径側の外輪外周面からの突出量は、当該シェル形ころ軸受を軸受け部に嵌め合わせた時に前記軸受け部に生じる応力が該軸受け部の材料の許容応力以内となる量である。5) Further, the amount of protrusion from the outer ring outer peripheral surface on the large-diameter side of the taper-shaped micro-projection for retaining the taper is determined by the stress generated in the bearing when the shell-type roller bearing is fitted to the bearing. The amount is within the allowable stress of the material of the part.

すなわち、本発明は、シェル形ころ軸受において、前記外輪の外周面に適正な突出量をもつテーパー状の微少凸部を設け、ハウジングに何らの追加的加工を施すことなく、（嵌め合い代＋微少凸部による食い込み効果）により、軸受けの抜け出し防止を図るものである。   That is, according to the present invention, in the shell-type roller bearing, a tapered minute convex portion having an appropriate protrusion amount is provided on the outer peripheral surface of the outer ring, and the housing is not subjected to any additional processing (fitting allowance + It is intended to prevent the bearing from coming out by the biting effect by the minute convex portion.

また、前記テーパー状の微少凸部を外周部が外輪圧入方向に向かって小径となるテーパ形状としたこと、および２条以上に微少凸部を設ける場合、外輪圧入方向に向かって漸次小さい突出量とすることにより、シェル形ころ軸受をハウジングに容易に嵌め合わせることができ、且つ、テーパエッジによる爪の引っ掛かり効果が与えられる。   Further, the tapered minute convex portion has a tapered shape in which the outer peripheral portion has a small diameter toward the outer ring press-fitting direction, and when two or more fine convex portions are provided, the protrusion amount gradually decreases toward the outer ring press-fitting direction. By doing so, the shell-type roller bearing can be easily fitted into the housing, and the effect of hooking the claw by the taper edge is provided.

本発明は、外輪の外周面に適正な突出量をもつテーパー状の微少凸部を設けることにより、比較的安価に、軸受けの抜け対策を提供することができる。   The present invention can provide a measure for removing a bearing at a relatively low cost by providing a tapered minute convex portion having an appropriate protrusion amount on the outer peripheral surface of the outer ring.

［実施の形態１］
図１は本発明の実施の形態１に係るシェル形ころ軸受の１例を示す参考図であり、（ａ）は平面図、（ｂ）はＡ−Ａ矢視断面図である。
図２は図１のＡ−Ａ矢視断面図を部分拡大して示す説明図である。
図３は本実施の形態１における微少凸部の１例を示す図である。
図４は本実施の形態１における微少凸部の第２の例を示す図である。
図５は本実施の形態１における微少凸部の第３の例を示す図である。
図６は本実施の形態１における微少凸部の拡大説明図である。
図において、１はシェル形ころ軸受、２は外輪、４は針状ころ、５は微少凸部、５ａは外輪圧入方向前側の微少凸部、５ｂは外輪圧入方向後側の微少凸部、５ｃはスパイラル状の微少凸部、５ｄは外輪圧入方向前側の爪状の微少凸部、５ｅは外輪圧入方向後側の爪状の微少凸部、５１は微少凸部のテーパ部、５２は外輪圧入方向前側のテーパエッジ、５３は外輪圧入方向後側のテーパエッジ、Ｄは外輪外径、Ｈ１は外輪圧入方向後側のテーパエッジ高さ、Ｈ２は外輪圧入方向前側のテーパエッジ高さ、Ｌは微少凸部の幅、θはテーパ角度である。 [Embodiment 1]
1A and 1B are reference views showing an example of a shell-type roller bearing according to Embodiment 1 of the present invention, where FIG. 1A is a plan view and FIG. 1B is a cross-sectional view taken along line AA.
FIG. 2 is an explanatory diagram showing a partially enlarged sectional view taken along the line AA in FIG.
FIG. 3 is a diagram showing an example of a minute convex portion in the first embodiment.
FIG. 4 is a diagram showing a second example of the minute convex portion in the first embodiment.
FIG. 5 is a diagram showing a third example of the minute convex portion in the first embodiment.
FIG. 6 is an enlarged explanatory view of a minute convex portion in the first embodiment.
In the figure, 1 is a shell roller bearing, 2 is an outer ring, 4 is a needle roller, 5 is a minute convex part, 5a is a minute convex part on the front side in the outer ring press-fitting direction, 5b is a minute convex part on the rear side in the outer ring press-fitting direction, 5c Is a spiral minute convex part, 5d is a claw-like minute convex part on the front side in the outer ring press-fitting direction, 5e is a claw-like minute convex part on the rear side in the outer ring press-fitting direction, 51 is a tapered part of the minute convex part, and 52 is an outer ring press-fitting Taper edge on the front side in the direction, 53 is the taper edge on the rear side in the outer ring press-fitting direction, D is the outer diameter of the outer ring, H1 is the taper edge height on the rear side in the outer ring press-fitting direction, H2 is the taper edge height on the front side in the outer ring press-fitting direction, and L is the small convex portion The width and θ are taper angles.

本実施の形態１におけるシェル形ころ軸受１は、図１（ａ）に示すように、基本的に、シェル形の外輪２、複数の針状ころ３、および針状ころ３を外輪２内に保持する保持器４より構成されている。
外輪２は、例えば、低炭素鋼板を浸炭焼入れ焼戻しして硬化した円筒体の軸方向の両端縁部には、図１（ｂ）のごとくそれぞれカシメ加工により中心部に向って突出させた突出部２ａと２ｂが設けられている。
また、針状ころ３は鋼材に熱処理を施こしたもので、外輪２の内壁面に沿って等間隔で回転自在に配設されている。
図２に示すように保持器４は、鋼板からなる円筒体に熱処理が施された弾性を有するものであり、その外径Ｄ1は外輪２の内径ｄより小さく、軸方向の長さＬ1は外輪２の軸方向の長さＬより短かく形成されている。また、円周方向には等間隔で複数の窓穴（ポケット）（図示せず）が設けられており、ポケットの軸方向の長さは針状ころ３の長さより若干長く、円周方向の幅は針状ころ３の外径よりわずかに小さく形成されている。 As shown in FIG. 1A, the shell roller bearing 1 according to the first embodiment basically includes a shell-shaped outer ring 2, a plurality of needle rollers 3, and a needle roller 3 in the outer ring 2. It comprises a retainer 4 for retaining.
The outer ring 2 is, for example, a protruding portion that protrudes toward the center portion by caulking as shown in FIG. 1B at both end edges in the axial direction of a cylindrical body that is hardened by carburizing, quenching, and tempering a low carbon steel plate 2a and 2b are provided.
The needle rollers 3 are obtained by heat-treating a steel material, and are disposed along the inner wall surface of the outer ring 2 so as to be rotatable at equal intervals.
As shown in FIG. 2, the cage 4 has elasticity obtained by heat-treating a cylindrical body made of a steel plate, and its outer diameter D 1 is smaller than the inner diameter d of the outer ring 2 and has an axial length L 1. Is formed shorter than the axial length L of the outer ring 2 . Further, a plurality of window holes (pockets) (not shown) are provided at equal intervals in the circumferential direction, and the axial length of the pocket is slightly longer than the length of the needle rollers 3, and the circumferential direction The width is formed slightly smaller than the outer diameter of the needle roller 3.

次に、上記のように構成したシェル形ころ軸受１の製造手順の一例について説明する。
先ず、低炭素鋼板からなる円筒体の軸方向の両端縁部のそれぞれに、カシメ加工により中心部側に突出する突出部２ａと２ｂを形成し、その後、全体を熱処理して外輪２を構成する。 Next, an example of a manufacturing procedure of the shell roller bearing 1 configured as described above will be described.
First, projecting portions 2a and 2b projecting toward the center portion side are formed by caulking on each of both end edges in the axial direction of a cylindrical body made of a low carbon steel plate, and then the whole is heat treated to form the outer ring 2. .

次に、保持器４のポケットにそれぞれ針状ころ３を嵌入し、外輪２の突出部２ａ、２ｂに干渉しないように保持器４を弾性変形させ、外輪２の一方の端部（開口部）から、突出部２ａ、２ｂの間を通して外輪２内に挿入し、組込む。
保持器４が所定の位置に組込まれると元の状態に戻り、各針状ころ３は外輪２の内壁面に当接すると共に、保持器４により回転自在に支持される。
このとき、保持器４の軸方向の両端縁部は、外輪２の突出部２ａ、２ｂの内壁に当接又は近接して位置して軸方向の移動が規制されているので、保持器４が外れたり脱落したりすることがない。 Next, each of the cage 4 in the pockets fitted the needle roller 3, the projecting portion 2a of the outer ring 2, the cage 4 so as not to interfere with 2b is elastically deformed, one end of the outer ring 2 (opening) Then, it is inserted into the outer ring 2 through the space between the protrusions 2a and 2b and assembled.
When the cage 4 is assembled at a predetermined position, it returns to its original state, and each needle roller 3 abuts against the inner wall surface of the outer ring 2 and is rotatably supported by the cage 4.
At this time, since both end edges in the axial direction of the cage 4 are positioned in contact with or close to the inner walls of the projecting portions 2a and 2b of the outer ring 2 , the movement in the axial direction is restricted. It will not come off or drop out.

上記の説明では、円筒体の両端縁部に、カシメ加工により突出部２ａ、２ｂを形成したのち熱処理して外輪２を構成した場合を示したが、先ず、円筒体を熱処理したのち、突出部２ａ〜２ｂを形成する位置の近傍を、例えば高周波焼鈍し処理により非硬化部とし、この非硬化部をカシメ加工して突出部２ａ、２ｄを形成してもよい。
また、円筒体を熱処理する際に、カシメ加工する位置に、例えば浸炭処理で焼入れをする場合は、あらかじめ防炭処理を施して非硬化部を設けておき、熱処理後にこの非硬化部をカシメ加工して突出部２ａ、２ｂを形成するようにしてもよい。 In the above description, the both edges of the cylindrical body, after the protruding portion 2a by caulking, but by heat-treating after forming a 2b shows a case where the outer ring 2, first, heat-treated a cylindrical body, the protrusions The vicinity of the position where 2a to 2b is formed may be made into a non-hardened portion by, for example, induction annealing, and the non-hardened portion may be crimped to form the protruding portions 2a and 2d.
In addition, when heat-treating the cylindrical body , for example, when quenching is performed by carburizing at a position to be caulked, a non-cured portion is provided in advance by performing a carbon-proof treatment, and the non-cured portion is caulked after the heat treatment. Thus, the protruding portions 2a and 2b may be formed.

本実施の形態１においては、外輪２の両端縁部の成形に合わせて抜け止め微少凸部５を内径側よりの型押しにより成形する。なお、微少凸部５の成形は、上記の如く塑性加工により行うのが好ましいが、機械加工により成形しても良い。
通常、外輪２は成形により、円筒中央部が微少量凹状になる傾向を有しており、これがシェル形ころ軸受１をハウジングに挿入したときの接触圧のアンバランスを生じる原因ともなる。また、この接触圧のアンバランスばかりでなく、シェル形ころ軸受１の外輪２の精度自体、上記のごとき工程から比較的大きな寸法公差値を有しており、ハウジングとの関係でその嵌め合い接触圧の不足から、シェル形ころ軸受１の軸受け部からの抜け出しを生じてしまう恐れもあった。 In the first embodiment, in accordance with the molding of both edge portions of the outer ring 2, the retaining minute minute convex portion 5 is molded by stamping from the inner diameter side. The minute projection 5 is preferably formed by plastic working as described above, but may be formed by machining.
Normally, the outer ring 2 has a tendency that the central part of the cylinder is slightly concave due to the molding, which causes a contact pressure imbalance when the shell-type roller bearing 1 is inserted into the housing. In addition to the imbalance of the contact pressure, the accuracy itself of the outer ring 2 of the shell-type roller bearing 1 has a relatively large dimensional tolerance value from the above-described process. Due to the lack of pressure, the shell-type roller bearing 1 may come out of the bearing portion.

本実施の形態１においては、上記抜け止め微少凸部５を外輪２の外周面に設けることにより、（嵌め合い締め付け力＋微少凸部５による引っ掛かり効果）により、シェル形ころ軸受１のハウジングからの抜け出しを防止するものであり、外輪２の外周面に少なくとも１条の周状の、または少なくとも１外周線上に等分に配列された爪状の、抜け止め用微少凸部５を設け、該抜け止め用微少凸部５を外輪圧入方向に向かって小径となるテーパ形状としたものである。
また、図２に示すように、前記抜け止め用微少凸部５を、少なくとも２条または２外周上以上で構成し、各条または各外周上における微少凸部（図２においては５ａおよび５ｂ）のテーパ形状の最大突出部Ｈａ、Ｈｂは、押し込み力Ｆによる外輪圧入の圧入方向に向かって漸次小さく、Ｈａ＜Ｈｂのごとく設計されている。 In the first embodiment, by providing the above-described minute retaining projection 5 on the outer peripheral surface of the outer ring 2, it is possible to remove it from the housing of the shell-type roller bearing 1 by (the fitting tightening force + the catching effect by the minute projection 5). Is provided on the outer peripheral surface of the outer ring 2 with at least one circumferential protrusion, or at least one claw-shaped minute convex part 5 for preventing the removal, The micro-projection 5 for retaining is made into a tapered shape having a small diameter in the outer ring press-fitting direction.
In addition, as shown in FIG. 2, the above-described minute convex portion 5 for retaining is constituted by at least two or two or more outer peripheries, and the minute convex portions (5a and 5b in FIG. 2) on each or each outer periphery. The taper-shaped maximum protrusions Ha and Hb are gradually smaller in the press-fitting direction of the outer ring press-fitting by the pushing force F, and are designed such that Ha <Hb.

抜け止め用微少凸部５の外輪２の外周面からの突出量は、適度の突出量であることが重要で、これが大き過ぎてもまた小さ過ぎても好ましくない。大き過ぎれば、シェル形ころ軸受１を挿入する軸受け部の内周を損傷するばかりでなく、シェル形ころ軸受１の外輪２に内径方向への変形を生じる恐れがあり、また、小さ過ぎれば前記の微少凸部５による引っ掛かり効果が期待できない。   It is important that the amount of protrusion of the micro-projection 5 for preventing slippage from the outer peripheral surface of the outer ring 2 is an appropriate amount of protrusion, and it is not preferable that this is too large or too small. If it is too large, it not only damages the inner periphery of the bearing portion into which the shell-type roller bearing 1 is inserted, but also may cause deformation of the outer ring 2 of the shell-type roller bearing 1 in the inner diameter direction. It is not possible to expect a catching effect due to the minute convex portion 5.

また、成形時に生じた外輪外周面の中凹量は、外輪２のハウジングへの組込み後は通常小さくなるので、好ましくはこの中凹形状部の一に、中凹量相当以下の高さの突出部を形成すれば、外輪２の組み込みにあたり、該突出部は外輪圧入の妨げにならず、かつ圧入後は該突出部がハウジング内周面に引っ掛かるため外輪の抜け止め効果を得ることができる。
多くの試験の結果、ＪＩＳ Ｂ１５１２に規格されたシェル形ころ軸受けの範囲においては、微少凸部５の外輪２の外周面からの突出量Ｈ３は、０．０１〜０．０３ｍｍ程度であることが好ましいとの知見を得た。 In addition, since the amount of the inner recess formed on the outer peripheral surface of the outer ring is usually small after the outer ring 2 is assembled into the housing, it is preferable that one of the center recesses has a height less than or equal to the amount of the inner recess. by forming the part, when the built-in outer ring 2, the protrusion not interfere with the outer press-fitting, and after the press-fitting can be said protrusion to obtain a locking effect omission of the outer ring for catching on the peripheral surface housing.
As a result of many tests, in the range of the shell-type roller bearing standardized in JIS B1512, the protruding amount H3 of the minute convex portion 5 from the outer peripheral surface of the outer ring 2 is about 0.01 to 0.03 mm. The knowledge that it was preferable was obtained.

なお、成形上から外輪圧入の圧入方向に向かった突出部５２の突出量Ｈ２は、Ｈ２＝０すなわち、外輪２の外径Ｄと一致させることもできる。また、抜け止め用微少凸部５を外輪２の剛性のある端部２ａ、２ｂの近傍に設けることにより、ハウジングへの装着時の外輪２の内径に生じる変形を防止することもできる。
上述の条件により抜け止め用微少凸部５を設けることによって、シェル形ころ軸受１のハウジングへの圧入がし易くなり、また圧入後は抵抗となって抜けづらくなる。 It should be noted that the protrusion amount H2 of the protrusion 52 from the molding toward the press-fitting direction of the outer ring can be made to coincide with H2 = 0, that is, the outer diameter D of the outer ring 2. Further, by providing the minute projections 5 for preventing slipping in the vicinity of the rigid end portions 2a and 2b of the outer ring 2, it is possible to prevent deformation that occurs in the inner diameter of the outer ring 2 when the outer ring 2 is mounted on the housing.
By providing the micro-projection 5 for preventing slipping under the above-described conditions, it becomes easy to press-fit the shell-type roller bearing 1 into the housing, and after press-fitting, it becomes difficult to come off due to resistance.

図４は、本実施の形態１における抜け止め用微少凸部５を、図３における外輪２の軸心線０−０’に直角な円周状に形成した形態に対して、該軸心線０−０’に対しスパイラル状に形成したものであり、軸線方向の抜け力はスパイラル角度αにより分力を生じ、シェル形針状ころ軸受１は、より抜け難くなる。
また、図５は、前述の図３および図４における抜け止め用微少凸部５が、周状の連続せる形で構成されているのに対し、少なくとも１外周線上に等分角度に配列された爪状の抜け止め用微少凸部５ｄ、５ｅとして設けたものである。この場合爪状の抜け止め用微少凸部５ｄ、５ｅは１外周線上に等分に配列されていることにより、微少凸部５ｄ、５ｅによる外輪２の内周への変形を均等化することができる。また、その配置を千鳥形状にすることにより、抜け止め効果をより大きくすることができる。 FIG. 4 shows the axial center line in contrast to the form in which the micro-projection 5 for preventing slipping in the first embodiment is formed in a circumferential shape perpendicular to the axial center line 0-0 ′ of the outer ring 2 in FIG. It is formed in a spiral shape with respect to 0-0 ′, and the withdrawal force in the axial direction generates a component force due to the spiral angle α, and the shell needle roller bearing 1 becomes more difficult to come off.
Further, in FIG. 5, the minute projections 5 for preventing slipping in the above-described FIGS. 3 and 4 are configured to be continuous in a circumferential shape, but are arranged at equal angles on at least one outer circumferential line. It is provided as a claw-like minute convex portion 5d, 5e for retaining. In this case, the claw-shaped minute protrusions 5d and 5e for retaining are equally arranged on one outer peripheral line, so that the deformation of the minute protrusions 5d and 5e toward the inner periphery of the outer ring 2 can be equalized. it can. Further, by making the arrangement staggered, the retaining effect can be further increased.

本実施の形態１は、抜け止め用微少凸部５を設けたシェル形ころ軸受を対象としているが、同一主旨により通常のラジアルボールベアリングに抜け止め用微少凸部を適用することも可能である。   The first embodiment is intended for a shell-type roller bearing provided with a minute convex portion 5 for retaining, but it is also possible to apply a minute convex portion for retaining to a normal radial ball bearing for the same purpose. .

本発明の実施の形態１に係るシェル形ころ軸受の正面図である。It is a front view of the shell type roller bearing which concerns on Embodiment 1 of this invention. 図１のＡ−Ａ矢視断面を部分拡大して示す説明図である。It is explanatory drawing which expands and shows the AA arrow cross section of FIG. 本実施の形態１における微少凸部の１例を示す図である。It is a figure which shows one example of the micro convex part in this Embodiment 1. FIG. 本実施の形態１における微少凸部の第２の例を示す図である。It is a figure which shows the 2nd example of the micro convex part in this Embodiment 1. FIG. 本実施の形態１における微少凸部の第３の例を示す図である。It is a figure which shows the 3rd example of the micro convex part in this Embodiment 1. FIG. 本実施の形態１における微少凸部の拡大説明図である。FIG. 4 is an enlarged explanatory view of a minute convex portion in the first embodiment.

１ シェル形ころ軸受
２ 外輪
３ 針状ころ
４ 針状ころ
５ 微少凸部
５ａ 外輪圧入方向前側の微少凸部
５ｂ 外輪圧入方向後側の微少凸部
５ｃ スパイラル状の微少凸部
５ｄ 外輪圧入方向前側の爪状の微少凸部
５ｅ 外輪圧入方向後側の爪状の微少凸部
５１ 微少凸部のテーパ部
５２ 外輪圧入方向前側のテーパエッジ
５３ 外輪圧入方向後側のテーパエッジ
Ｄ 外輪外径
Ｄ１ 保持器の外径
ｄ 外輪の内径
Ｈ１ 外輪圧入方向後側のテーパエッジ高さ
Ｈ２ 外輪圧入方向前側のテーパエッジ高さ
Ｈａ 外輪圧入方向前側の微少凸部の最大外径
Ｈｂ 外輪圧入方向後側の微少凸部の最大外径
Ｌ 微少凸部の幅
Ｌ０ シェル形ころ軸受外輪の幅
Ｌ１ シェル形ころ軸受保持器の幅
θ テーパ角度
０−０’外輪の軸心線である DESCRIPTION OF SYMBOLS 1 Shell type roller bearing 2 Outer ring 3 Needle roller 4 Needle roller 5 Slight convex part 5a Slight convex part on the front side in the outer ring press-fitting direction 5b Slight convex part on the rear side in the outer ring press-fitting direction 5c Spiral minute convex part 5d Front side in the outer ring press-fitting direction Claw-shaped minute convex portion 5e claw-shaped minute convex portion on the rear side in the outer ring press-fit direction 51 taper portion on the minute convex portion 52 taper edge on the front side in the outer ring press-fit direction 53 taper edge on the rear side in the outer ring press-fit direction D outer ring outer diameter D1 of the cage Outer diameter d Inner diameter of outer ring H1 Tapered edge height on the rear side in the outer ring press-fitting direction H2 Tapered edge height on the front side in the outer ring press-fitting direction Ha Maximum outer diameter of the minute convex part on the front side in the outer ring press-fitting direction Hb Maximum of the small convex part on the rear side in the outer ring press-fitting direction Outer diameter L Width of small convex portion L0 Width of outer ring of shell-type roller bearing L1 Width of shell-type roller bearing retainer θ Taper angle 0-0 ′

Claims (5)

鋼板の円筒体からなり、その両端縁部にカシメ加工により中心に向かって突出する突出部を有する外輪を備えたシェル形ころ軸受において、
前記外輪の外周面に少なくとも１条の周状の、または少なくとも１外周線上に等分に配列された爪状の、抜け止め用微少凸部を備え、該抜け止め用微少凸部はその外周部が外輪圧入方向に向かって小径となるテーパ形状を有しており、
前記テーパ形状の抜け止め用微少凸部の大径側の外輪外周面からの突出量は、その位置における成形時により生じた外周面からの中凹量に相当する量であり、
前記テーパ形状の抜け止め用微少凸部が、前記外輪の軸方向両端の間において前記中凹量だけ凹んでいる中凹形状部に設けられていることを特徴とするシェル形ころ軸受。 In a shell-type roller bearing comprising a cylindrical body of a steel plate and having an outer ring having protrusions protruding toward the center by crimping at both end edges thereof,
Circumferential at least one strip to the outer circumferential surface of the outer ring, or at least the outer periphery on the claw-shaped arranged in bisectrix, e Bei a stop for minute protrusions omission,該抜only minute protrusions for preventing its periphery The part has a tapered shape with a smaller diameter in the outer ring press-fitting direction ,
The amount of protrusion from the outer peripheral surface of the outer ring on the large diameter side of the taper-shaped micro-projection for retaining is an amount corresponding to the amount of concave from the outer peripheral surface generated by molding at that position,
A shell-type roller bearing, wherein the tapered micro-projection portion for retaining is provided in a middle concave portion that is recessed by the middle concave amount between both axial ends of the outer ring . 前記抜け止め用微少凸部が、少なくとも２条または２外周上以上で構成されており、各条または各外周上における微少凸部のテーパ形状の最大突出部は、外輪圧入方向に向かって漸次小さく設計されていることを特徴とする請求項１に記載のシェル形ころ軸受。   The above-mentioned minute convex portions for retaining are composed of at least two strips or two or more outer circumferences, and the taper-shaped maximum projecting portions of the minor projections on each strip or each outer circumference gradually become smaller toward the outer ring press-fitting direction. The shell-type roller bearing according to claim 1, which is designed. 前記テーパ形状の抜け止め用微少凸部は、外輪圧入方向に向かう側のテーパエッジ部をＲ形状とし、反対側のテーパエッジ部をシャープエッジとしたことを特徴とする請求項１または２に記載のシェル形ころ軸受。 3. The shell according to claim 1, wherein the minute convex portion for preventing the taper from falling off has a tapered edge portion on the side facing the outer ring press-fitting direction as an R shape and a tapered edge portion on the opposite side as a sharp edge. Roller bearing. 前記周状の抜け止め用微少凸部は、同一円周またはスパイラル状よりなるものであることを特徴とする請求項１乃至３のいずれか１項に記載のシェル形ころ軸受。 The shell-type roller bearing according to any one of claims 1 to 3, wherein the circumferential minute convex portions for retaining are made of the same circumference or a spiral shape . 前記テーパ形状の抜け止め用微少凸部の大径側の外輪外周面からの突出量は、当該シェル形ころ軸受を軸受け部に嵌め合わせた時に前記軸受け部に生じる応力が該軸受け部の材料の許容応力以内となる量であることを特徴とする請求項１乃至４のいずれか１項に記載のシェル形ころ軸受。 The amount of protrusion from the outer ring outer peripheral surface on the large-diameter side of the taper-shaped micro-projection for retaining is that the stress generated in the bearing when the shell-type roller bearing is fitted to the bearing is determined by the material of the bearing. Drawn cup roller bearing according to any one of claims 1 to 4, characterized in that an amount that is within the allowable stress.
JP2006006073A 2006-01-13 2006-01-13 Shell roller bearing Expired - Fee Related JP4605026B2 (en)

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Citations (3)

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Publication number Priority date Publication date Assignee Title
JPH0187332U (en) * 1987-12-03 1989-06-09
JPH07208462A (en) * 1994-01-24 1995-08-11 Ntn Corp Insulated rolling bearing
JP2003194037A (en) * 2001-12-27 2003-07-09 Ntn Corp Connecting rod and connecting rod with bearing

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0187332U (en) * 1987-12-03 1989-06-09
JPH07208462A (en) * 1994-01-24 1995-08-11 Ntn Corp Insulated rolling bearing
JP2003194037A (en) * 2001-12-27 2003-07-09 Ntn Corp Connecting rod and connecting rod with bearing

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