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JP2005172059A - Roller bearing - Google Patents

Roller bearing Download PDF

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Publication number
JP2005172059A
JP2005172059A JP2003410296A JP2003410296A JP2005172059A JP 2005172059 A JP2005172059 A JP 2005172059A JP 2003410296 A JP2003410296 A JP 2003410296A JP 2003410296 A JP2003410296 A JP 2003410296A JP 2005172059 A JP2005172059 A JP 2005172059A
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JP
Japan
Prior art keywords
outer ring
raceway surface
cage
axial
roller bearing
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
Application number
JP2003410296A
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Japanese (ja)
Inventor
Hajime Watanabe
肇 渡邉
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Koyo Seiko Co Ltd
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Koyo Seiko Co Ltd
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Publication date
Application filed by Koyo Seiko Co Ltd filed Critical Koyo Seiko Co Ltd
Priority to JP2003410296A priority Critical patent/JP2005172059A/en
Publication of JP2005172059A publication Critical patent/JP2005172059A/en
Pending legal-status Critical Current

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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
    • 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
    • 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
    • F16C33/46—Cages for rollers or needles
    • F16C33/4605—Details of interaction of cage and race, e.g. retention or centring
    • 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
    • F16C33/46—Cages for rollers or needles
    • F16C33/4617—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages
    • F16C33/4623—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages formed as one-piece cages, i.e. monoblock cages
    • F16C33/4635—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages formed as one-piece cages, i.e. monoblock cages made from plastic, e.g. injection moulded window cages
    • 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
    • F16C43/00—Assembling bearings
    • F16C43/04—Assembling rolling-contact bearings
    • F16C43/06—Placing rolling bodies in cages or bearings
    • 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
    • F16C2240/00—Specified values or numerical ranges of parameters; Relations between them
    • F16C2240/40—Linear dimensions, e.g. length, radius, thickness, gap
    • 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
    • F16C2300/00—Application independent of particular apparatuses
    • F16C2300/02—General use or purpose, i.e. no use, purpose, special adaptation or modification indicated or a wide variety of uses mentioned

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

Abstract

<P>PROBLEM TO BE SOLVED: To provide a roller bearing 1 with a plurality of rollers 3 held by a cage 4 and arranged in an outer ring 2, having non-detachable construction with relatively low cost. <P>SOLUTION: On both axial sides of a raceway surface 2a of the outer ring 2, side wall faces 2b, 2c are provided rising outward from the raceway surface 2a in the radial direction. On both axial sides of the cage 4 at the outsides of both axial ends of the raceway surface 2a of the outer ring, step portions 12, 13 are provided each having an outer diameter larger than an inner diameter D2 of the raceway surface of the outer ring 2. When the cage 4 is assembled into the inner periphery of the outer ring 2, one step portion 12 of the cage 4 is elastically compressed in the radial direction to pass from one axial end of the raceway surface 2a of the outer ring 2 to the other axial end thereof, elastically restored after passing, and hitched on the side wall face 2b on the other axial end of the raceway surface 2a in the axial direction. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、外輪に保持器で保持した複数のころを配置したころ軸受に関する。   The present invention relates to a roller bearing in which a plurality of rollers held by a cage are arranged on an outer ring.

この種のころ軸受において、複数のころおよび保持器を外輪から非分離とするために、外輪の軸方向両端部に径方向内向きの鍔を設け、この鍔でころおよび保持器の抜け出しを阻止するようにしたものがある。例えば外輪を鋼板のプレス成形品とする場合の製造手順としては、まず、外輪として鋼板を深絞りにより有底円筒形にするとともに底に貫通孔を形成し、底と反対側の開口端を薄肉とした状態で、全体的に熱硬化処理を施し、この後、前記薄肉部分のみを焼き鈍しすることにより軟化しておいて、この外輪の内周にころおよび保持器を組み込んでから、前記薄肉部分を径方向内向きに屈曲させる（例えば、特許文献１参照）。
特開平１０−２３７６２０号（図１、図２） In this type of roller bearing, in order to keep the rollers and cage from separating from the outer ring, radially inward flanges are provided at both axial ends of the outer ring to prevent the rollers and cage from coming out. There is something to do. For example, as a manufacturing procedure when the outer ring is a press-formed product of a steel plate, first, the steel plate is made into a bottomed cylindrical shape by deep drawing as the outer ring, a through hole is formed in the bottom, and the opening end opposite to the bottom is thin-walled. In this state, a thermosetting treatment is performed as a whole, and after that, the thin wall portion is softened by annealing only the thin wall portion, and after the roller and the cage are incorporated in the inner periphery of the outer ring, the thin wall portion Is bent inward in the radial direction (see, for example, Patent Document 1).
JP-A-10-237620 (FIGS. 1 and 2)

上記従来例では、外輪にころおよび保持器の組品を組み込んだ後で外輪の薄肉部分を屈曲するという手順をとらざるを得ないので、外輪を製造するときの工程数が多くなってしまうなど、製造コストが高くつく。   In the above conventional example, the procedure of bending the thin portion of the outer ring after incorporating the roller and cage assembly into the outer ring is unavoidable, so the number of processes when manufacturing the outer ring is increased. Manufacturing costs are high.

本発明は、外輪に保持器で保持した複数個のころを配置したころ軸受において、前記外輪の軌道面の軸方向両側に前記軌道面から径方向外向きに立ち上がる側壁面を設け、前記保持器の軸方向両端側で前記外輪の軌道面の軸方向両端より外側に外輪の軌道面内径より大きい外径の段部を設け、保持器を外輪の内周に組み込む際、前記保持器の一方の段部が、径方向に弾性圧縮して前記外輪の軌道面の軸方向一端側から軸方向他端側まで通過するとともに、通過後に弾性復元して前記軌道面の軸方向他端側の側壁面に軸方向から引っ掛かりとなる、ことを特徴としている。   The present invention provides a roller bearing in which a plurality of rollers held by a cage is arranged on an outer ring, and provided with side wall surfaces rising radially outward from the raceway surface on both axial sides of the raceway surface of the outer ring, A step portion having an outer diameter larger than the inner diameter of the raceway surface of the outer ring is provided outside both ends in the axial direction of the raceway surface of the outer ring at both ends in the axial direction of the outer ring. The step portion is elastically compressed in the radial direction and passes from one axial end side to the other axial end side of the raceway surface of the outer ring, and is elastically restored after passing and is a side wall surface on the other axial end side of the raceway surface. It is characterized by being caught from the axial direction.

この場合、外輪にころおよび保持器の組品を組み込んでから鍔を屈曲する必要がなくなるので、焼き鈍し工程、前記組み込み後の屈曲工程などが不要となる。したがって、ころ軸受の製造コストの低減に貢献できる。   In this case, since it is not necessary to bend the collar after the assembly of the roller and the cage is assembled into the outer ring, an annealing process, a bending process after the incorporation, and the like are not necessary. Therefore, it can contribute to the reduction of the manufacturing cost of the roller bearing.

前記段部の外周には、軸方向内側から外側へ向けて漸次縮径するテーパ面が設けられたものとすることができる。この場合、外輪の内周に保持器を組み込む際に、保持器の第１段部が外輪の内周面における一端縁に当接したときに、テーパ面によって、保持器を径方向に弾性圧縮させやすくなり、保持器を組み込みやすくなるなど、作業性が向上する。   The outer periphery of the step portion may be provided with a tapered surface that gradually decreases in diameter from the inner side to the outer side in the axial direction. In this case, when the cage is incorporated into the inner circumference of the outer ring, the cage is elastically compressed in the radial direction by the tapered surface when the first step portion of the cage comes into contact with one end edge of the inner circumference surface of the outer ring. This makes it easier to install and retains the cage, improving workability.

前記外輪の軌道面は、ころの有効軌道長さと等しいか、あるいは所定量大きく設定されているとともに、この外輪の軸方向全長がその軌道面の軸方向長さと等しいかあるいは所定量大きく設定されており、前記両段部の各内端面間距離が前記外輪の軌道面の軸方向全長よりも所定量大きく設定されたものとすることができる。このようにすれば、外輪がシンプルな円筒形で済み、軌道面以外に実質的に余分な部分を省略できるので、材料コスト、加工コストの低減に貢献できる。   The raceway surface of the outer ring is set to be equal to or larger by a predetermined amount than the effective raceway length of the roller, and the overall axial length of the outer ring is set to be equal to or greater than the axial length of the raceway surface. In addition, the distance between the inner end surfaces of the two stepped portions can be set to be larger by a predetermined amount than the total axial length of the raceway surface of the outer ring. In this way, the outer ring may be a simple cylindrical shape, and a substantial extra portion other than the raceway surface can be omitted, which can contribute to reduction in material cost and processing cost.

本発明のころ軸受によれば、各構成要素を非分離とした構造を比較的安価に提供できる。   According to the roller bearing of the present invention, a structure in which each component is not separated can be provided at a relatively low cost.

以下、本発明に係るころ軸受の最良の形態を図面に基づいて説明する。図１は、ころ軸受を示す断面図、図２は、図１の（２）−（２）線断面の矢視図、図３は、保持器の単体を示す斜視図、図４は、ころ軸受の組み立て時の様子を示す図である。   Hereinafter, the best mode of a roller bearing according to the present invention will be described with reference to the drawings. 1 is a sectional view showing a roller bearing, FIG. 2 is a sectional view taken along line (2)-(2) in FIG. 1, FIG. 3 is a perspective view showing a single unit of a cage, and FIG. It is a figure which shows the mode at the time of the assembly of a bearing.

図において、１は針状ころ軸受などのころ軸受の全体を示している。ころ軸受１は、外輪２、ころとしての針状ころ３、および保持器４を備えている。   In the figure, reference numeral 1 denotes an entire roller bearing such as a needle roller bearing. The roller bearing 1 includes an outer ring 2, needle rollers 3 as rollers, and a cage 4.

外輪２は、円筒状に形成され、その内周面の軸方向全体が針状ころ３の軌道面２ａとされている。この外輪２は、例えば鋼板をプレス成形したものであるが、鋼管などを旋削加工したソリッドタイプとしてもよい。   The outer ring 2 is formed in a cylindrical shape, and the entire axial direction of the inner peripheral surface thereof is a raceway surface 2 a of the needle roller 3. The outer ring 2 is formed, for example, by pressing a steel plate, but may be a solid type obtained by turning a steel pipe or the like.

保持器４は、軸方向両側に同軸上に配置される第１、第２環状部８，９と、両環状部８，９間で円周方向複数箇所に架け渡される柱部１０と、各柱部１０の間に設けられて針状ころ３を保持するポケット１１とを備えている。この保持器４は、例えば合成樹脂で円筒状に形成されたものからなるが、金属製とすることもできる。なお、図２に示すように、各柱部１０の周方向幅は径方向内向きへ漸次幅広となる形状とされており、ポケット１１の周方向幅が径方向内向きへ漸次幅狭となる形状にされている。このポケット１１の外径側開口の周方向幅を針状ころ３の直径よりも大きく設定して、ポケット１１の内径側開口の周方向幅を針状ころ３の直径よりも小さく設定することにより、ポケット１１から径方向外向きへの針状ころ３の抜け出しを許容し、径方向内向きへの針状ころ３の抜け出しを防止している。   The cage 4 includes first and second annular portions 8 and 9 that are coaxially disposed on both sides in the axial direction, a column portion 10 spanned between a plurality of circumferential portions between the annular portions 8 and 9, and A pocket 11 is provided between the column portions 10 and holds the needle rollers 3. The cage 4 is made of, for example, a synthetic resin and formed into a cylindrical shape, but may be made of metal. As shown in FIG. 2, the circumferential width of each column portion 10 is a shape that gradually increases inward in the radial direction, and the circumferential width of the pocket 11 gradually decreases inward in the radial direction. It is in shape. By setting the circumferential width of the outer diameter side opening of the pocket 11 to be larger than the diameter of the needle roller 3 and setting the circumferential width of the inner diameter side opening of the pocket 11 to be smaller than the diameter of the needle roller 3. The needle roller 3 is allowed to come out from the pocket 11 radially outward, and the needle roller 3 is prevented from coming out radially inward.

この実施形態のころ軸受１は、軸方向両端に径方向内向きの鍔を設けていない外輪２に、針状ころ３および保持器４を非分離に組み込んだ構造としているので、以下で詳しく説明する。   The roller bearing 1 of this embodiment has a structure in which the needle roller 3 and the cage 4 are non-separatedly incorporated in the outer ring 2 that is not provided with radially inward flanges at both axial ends, and will be described in detail below. To do.

外輪２の軸方向全長Ｗ１は、針状ころ３の軸方向全長Ｗ２よりも大きく、かつ、保持器４の軸方向全長Ｗ３よりも小さく設定されている。   The axial total length W1 of the outer ring 2 is set to be larger than the axial total length W2 of the needle roller 3 and smaller than the axial total length W3 of the cage 4.

保持器４の第１、第２環状部８，９には、径方向外向きに隆起する環状の第１、第２の段部１２，１３が設けられており、この保持器４の両段部１２，１３を外輪２の両外端部２ｂ，２ｃに軸方向で引っ掛かるようにしている。この実施形態では、外輪２の両外端面２ｂ，２ｃが請求項に記載の側壁面に相当する。   The first and second annular portions 8 and 9 of the retainer 4 are provided with annular first and second step portions 12 and 13 that protrude outward in the radial direction. The portions 12 and 13 are hooked to both outer end portions 2b and 2c of the outer ring 2 in the axial direction. In this embodiment, both outer end surfaces 2b and 2c of the outer ring 2 correspond to the side wall surfaces described in the claims.

第１、第２の段部１２，１３の外周部分における軸方向内側には円筒面１２ａ，１３ａが、また、この円筒面１２ａ，１３ａよりも軸方向外側に軸方向外側へ向けて漸次縮径するテーパ面１２ｂ，１３ｂが設けられている。   Cylindrical surfaces 12a and 13a are axially inner on the outer peripheral portions of the first and second stepped portions 12 and 13, and gradually reduce in diameter toward the axially outer side of the cylindrical surfaces 12a and 13a. Tapered surfaces 12b and 13b are provided.

円筒面１２ａ，１３ａの外径Ｄ１は、外輪２の軌道面２ａの内径Ｄ２と等しく、あるいは所定量大きく設定されている。テーパ面１２ｂ，１３ｂの最小径の端縁における外径Ｄ３は、外輪２の軌道面２ａの内径Ｄ２よりも所定量小さく設定されている。このような寸法関係に設定すると、外輪２の内周に保持器４を組み込めなくなるので、この組み込みを可能とするために、前記径Ｄ１，Ｄ２の差分について、保持器４の段部１２，１３を径方向に弾性圧縮可能にしている。なお、この実施形態では、保持器４を弾性を有する合成樹脂として全体的に撓みうるものとしているが、少なくとも第１、第２の段部１２，１３のみを径方向に弾性圧縮可能となる形状としてもよい。   The outer diameter D1 of the cylindrical surfaces 12a and 13a is set equal to or larger than the inner diameter D2 of the raceway surface 2a of the outer ring 2 by a predetermined amount. The outer diameter D3 at the edge of the minimum diameter of the tapered surfaces 12b and 13b is set smaller than the inner diameter D2 of the raceway surface 2a of the outer ring 2 by a predetermined amount. When the dimensional relationship is set as described above, the retainer 4 cannot be assembled on the inner periphery of the outer ring 2. Therefore, in order to enable this assembly, the step portions 12 and 13 of the retainer 4 are used for the difference between the diameters D1 and D2. Is elastically compressible in the radial direction. In this embodiment, the cage 4 can be entirely bent as an elastic synthetic resin. However, at least only the first and second step portions 12 and 13 can be elastically compressed in the radial direction. It is good.

また、ころ軸受１の組立後において、外輪２と保持器４との相対回転時の干渉を避けるとともに外輪２に対する保持器４の軸方向がたを小さくするために、段部１２，１３の各内端面の対向間隔を、外輪２の軸方向全長Ｗ１よりも大きくする方向で適宜設定している。   Further, after assembling the roller bearing 1, each of the step portions 12 and 13 is arranged to avoid interference during relative rotation between the outer ring 2 and the cage 4 and to reduce the axial direction of the cage 4 with respect to the outer ring 2. The facing interval between the inner end faces is appropriately set in a direction that is larger than the overall axial length W1 of the outer ring 2.

次に、上述したころ軸受１の組み立て手順を説明する。   Next, the assembly procedure of the roller bearing 1 described above will be described.

まず、保持器４の各ポケット１１にその外径側から針状ころ３を取り付ける。このとき、ポケット１１内にグリースなどの潤滑剤を塗布しておき、この潤滑剤の粘性を利用して針状ころ３をポケット１１内に保持させておくとともに、各針状ころ３の外径から適当な治具で掴む。   First, the needle rollers 3 are attached to the respective pockets 11 of the cage 4 from the outer diameter side. At this time, a lubricant such as grease is applied in the pocket 11, and the needle roller 3 is held in the pocket 11 using the viscosity of the lubricant, and the outer diameter of each needle roller 3 is maintained. Grip with an appropriate jig.

このようにした針状ころ３および保持器４の組品を円筒形の外輪２の内周に組み込む。このときは、図４に示すように、まず、保持器４を矢印Ａ方向に押し込むと、保持器４における第１の段部１２のテーパ面１２ｂが外輪２の内周面における一方外端縁に当接するが、この当接によって第１環状部８が比較的容易に矢印Ｂで示すように径方向に弾性圧縮することにより、外輪２の内周に保持器４の第１の段部１２が入り込むことになる。そのまま、保持器４を軸方向一方へ押圧して、第１の段部１２を外輪２の内周面の他方開口から飛び出させると、第１の段部１２が弾性復元して、この第１の段部１２の内端面が外輪２の一方外端面２ｂに軸方向で引っ掛かるようになる。これで、保持器４の軸方向両端の第１、第２の段部１２，１３が、外輪２の両外端面２ｂ，２ｃに軸方向で引っ掛かるようになるので、外輪２から保持器４が抜け出なくなる。   The assembly of the needle roller 3 and the cage 4 as described above is incorporated into the inner periphery of the cylindrical outer ring 2. At this time, as shown in FIG. 4, first, when the cage 4 is pushed in the direction of arrow A, the tapered surface 12 b of the first step portion 12 in the cage 4 is one outer edge on the inner circumferential surface of the outer ring 2. By this contact, the first annular portion 8 is relatively easily elastically compressed in the radial direction as indicated by the arrow B, so that the first step portion 12 of the retainer 4 is formed on the inner periphery of the outer ring 2. Will enter. If the retainer 4 is pressed as it is in the axial direction and the first step 12 is popped out from the other opening of the inner peripheral surface of the outer ring 2, the first step 12 is elastically restored and the first step 12 is elastically restored. The inner end surface of the step portion 12 is hooked in the axial direction on one outer end surface 2 b of the outer ring 2. As a result, the first and second step portions 12 and 13 at both axial ends of the cage 4 are hooked in the axial direction on both outer end surfaces 2b and 2c of the outer ring 2, so that the cage 4 is detached from the outer ring 2. It will not come out.

このような組み立てが可能になるから、ころ軸受１の外輪２に適宜の熱硬化処理を施すだけでよく、従来例のように外輪に部分的な焼き鈍しを行わずに済むとともに、従来例のように保持器に針状ころを取り付けた組品を外輪に組み込んだ後で外輪に鍔を形成するための屈曲作業を行わずに済むようになる。したがって、ころ軸受１の外輪２と針状ころ３と保持器４とを非分離とする構造にしたうえで、従来例に比べて製造工程数を削減できるので、製造コストを低減できるようになる。   Since such an assembly becomes possible, it is only necessary to subject the outer ring 2 of the roller bearing 1 to an appropriate thermosetting treatment, and it is not necessary to partially anneal the outer ring as in the conventional example, and as in the conventional example. In addition, after the assembly in which the needle rollers are attached to the cage is assembled into the outer ring, it is not necessary to perform a bending operation for forming a flange on the outer ring. Therefore, since the outer ring 2 of the roller bearing 1, the needle roller 3, and the cage 4 are made non-separated, the number of manufacturing steps can be reduced as compared with the conventional example, so that the manufacturing cost can be reduced. .

以下、本発明の他の実施形態を説明する。   Hereinafter, other embodiments of the present invention will be described.

図５に示すように、外輪２の軸方向全長Ｗ１を保持器４の軸方向全長と等しいか、あるいは所定量大きく設定することにより、外輪２から保持器４をはみ出さないようにしている。この場合、外輪２の軸方向両端に、外輪２の軌道面２ａの内径寸法よりも大きい内径を有する張り出し円筒部２ｄ，２ｅを設けている。この張り出し円筒部２ｄ，２ｅの内周面と、保持器４の各段部１２，１３とは、干渉しない寸法に設定されている。この実施形態では、外輪２において軌道面２ａと両張り出し円筒部２ｄ，２ｅとの境の側壁面２ｂ，２ｃに、保持器４の各段部１２，１３が軸方向で引っ掛かるようになる。   As shown in FIG. 5, the cage 4 is prevented from protruding from the outer ring 2 by setting the overall axial length W <b> 1 of the outer ring 2 to be equal to or larger than the axial total length of the cage 4. In this case, projecting cylindrical portions 2d and 2e having an inner diameter larger than the inner diameter dimension of the raceway surface 2a of the outer ring 2 are provided at both axial ends of the outer ring 2. The inner peripheral surfaces of the projecting cylindrical portions 2d and 2e and the stepped portions 12 and 13 of the cage 4 are set to dimensions that do not interfere with each other. In this embodiment, the stepped portions 12 and 13 of the retainer 4 are hooked in the axial direction on the side wall surfaces 2b and 2c at the boundary between the raceway surface 2a and the projecting cylindrical portions 2d and 2e in the outer ring 2.

図６に示すように、図５に示した外輪２の一方の張り出し円筒部２ｄにおける内周面の外端部に、径方向内向きの鍔２ｆを設けることによって、一方の張り出し円筒部２ｄの内周に保持器４の一方の段部１２が入り込む周溝２ｇを設けている。この場合、鍔２ｆの内径寸法は、外輪２の軌道面２ａの内径寸法と等しくしているが、大きくあるいは小さくしてもよい。また、この場合、保持器４において、軸方向他方の段部１３については無くしてもよい。   As shown in FIG. 6, by providing a radially inward flange 2f at the outer end of the inner peripheral surface of one projecting cylindrical portion 2d of the outer ring 2 shown in FIG. A circumferential groove 2g into which one step 12 of the cage 4 enters is provided on the inner circumference. In this case, the inner diameter dimension of the flange 2f is equal to the inner diameter dimension of the raceway surface 2a of the outer ring 2, but may be larger or smaller. In this case, in the cage 4, the other axial step 13 may be omitted.

以上各実施の形態において、保持器４の段部１２，１３の外径部分に円筒面１２ａ，１３ａを設けずにテーパ面のみとしてもよい。また、テーパ面１２ｂ，１３ｂは、凸曲面、あるいは凹曲面形状であってもよい。また、各柱部１０に針状ころ３の抜け出しを防止するころ止め部を設けてもよい。また、針状ころ３は外輪２に保持器４を組み込んだ後に、保持器４の各ポケット１１に内径側から取り付けてもよい。   In the above embodiments, only the tapered surfaces may be provided without providing the cylindrical surfaces 12a and 13a at the outer diameter portions of the step portions 12 and 13 of the cage 4. Further, the tapered surfaces 12b and 13b may be convex curved surfaces or concave curved surfaces. Moreover, you may provide the roller stopper part which prevents the needle roller 3 from slipping out in each pillar part 10. FIG. The needle roller 3 may be attached to each pocket 11 of the retainer 4 from the inner diameter side after the retainer 4 is incorporated into the outer ring 2.

本発明の最良の形態のころ軸受を示す断面図Sectional drawing which shows the roller bearing of the best form of this invention 図１の（２）−（２）線断面の矢視図1 is a cross-sectional view taken along line (2)-(2) in FIG. 図１の保持器の単体を示す斜視図The perspective view which shows the simple substance of the holder | retainer of FIG. 図１のころ軸受の組み立て時の様子を示す図The figure which shows the mode at the time of the assembly of the roller bearing of FIG. 本発明の他の形態に係るころ軸受の上半分を示す断面図Sectional drawing which shows the upper half of the roller bearing which concerns on the other form of this invention 本発明のさらに他の形態に係るころ軸受の上半分を示す断面図Sectional drawing which shows the upper half of the roller bearing which concerns on the further another form of this invention.

符号の説明Explanation of symbols

１ ころ軸受 ２ 外輪
２ａ 軌道面 ２ｂ，２ｃ 外端面（側壁面）
３ 針状ころ ４ 保持器
８ 第１環状部 ９ 第２環状部
１０ 柱部 １２，１３ 段部 1 Roller bearing 2 Outer ring 2a Raceway surface 2b, 2c Outer end surface (side wall surface)
3 Needle roller 4 Cage 8 First annular portion 9 Second annular portion 10 Column portion 12, 13 Step portion

Claims (3)

外輪に保持器で保持した複数個のころを配置したころ軸受において、
前記外輪の軌道面の軸方向両側に前記軌道面から径方向外向きに立ち上がる側壁面を設け、前記保持器の軸方向両端側で前記外輪の軌道面の軸方向両端より外側に外輪の軌道面内径より大きい外径の段部を設け、保持器を外輪の内周に組み込む際、前記保持器の一方の段部が、径方向に弾性圧縮して前記外輪の軌道面の軸方向一端側から軸方向他端側まで通過するとともに、通過後に弾性復元して前記軌道面の軸方向他端側の側壁面に軸方向から引っ掛かりとなる、ことを特徴とするころ軸受。 In roller bearings in which a plurality of rollers held by a cage are arranged on the outer ring,
Side wall surfaces rising radially outward from the raceway surface are provided on both sides in the axial direction of the raceway surface of the outer ring, and the raceway surface of the outer ring is located outside the axially opposite ends of the raceway surface of the outer ring on both axial sides of the cage. When a step portion having an outer diameter larger than the inner diameter is provided and the cage is incorporated in the inner periphery of the outer ring, one step portion of the cage is elastically compressed in the radial direction from one end side in the axial direction of the raceway surface of the outer ring. A roller bearing characterized in that it passes through to the other end side in the axial direction and is elastically restored after passing and is hooked from the axial direction on the side wall surface on the other end side in the axial direction of the raceway surface. 前記段部の外周には、軸方向内側から外側へ向けて漸次縮径するテーパ面が設けられている、ことを特徴とする請求項１のころ軸受。   2. The roller bearing according to claim 1, wherein a tapered surface that gradually decreases in diameter from the inner side to the outer side is provided on an outer periphery of the stepped portion. 前記外輪の軌道面は、ころの有効軌道長さと等しいか、あるいは所定量大きく設定されているとともに、この外輪の軸方向全長がその軌道面の軸方向長さと等しいかあるいは所定量大きく設定されており、前記両段部の各内端面間距離が前記外輪の軌道面の軸方向全長よりも所定量大きく設定されている、ことを特徴とする請求項１または２のころ軸受。   The raceway surface of the outer ring is set to be equal to or larger by a predetermined amount than the effective raceway length of the roller, and the overall axial length of the outer ring is set to be equal to or greater than the axial length of the raceway surface. The roller bearing according to claim 1, wherein a distance between the inner end surfaces of the two stepped portions is set to be a predetermined amount larger than an axial total length of the raceway surface of the outer ring.
JP2003410296A 2003-12-09 2003-12-09 Roller bearing Pending JP2005172059A (en)

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007239834A (en) * 2006-03-07 2007-09-20 Jtekt Corp Roller bearing with cage and manufacturing method thereof
US7419036B2 (en) * 2004-07-01 2008-09-02 Knorr-Bremse Systeme Fuer Nutzfahrzeuge Gmbh Disc brake for vehicles having an application device with a needle bearing
WO2008113437A1 (en) 2007-03-19 2008-09-25 Bayerische Motoren Werke Ag Method for arranging an undivided roller bearing at a shaft, and roller bearing therefor
JP2009293398A (en) * 2008-06-02 2009-12-17 Ntn Corp Pump tappet
US20100129023A1 (en) * 2007-10-03 2010-05-27 The Timken Company Positioning means for camshaft roller bearing
JP2015113969A (en) * 2013-12-16 2015-06-22 日本精工株式会社 Cage and roller
WO2015093348A1 (en) * 2013-12-16 2015-06-25 日本精工株式会社 Cage and roller
JP2016050623A (en) * 2014-08-29 2016-04-11 日本精工株式会社 Solid needle bearing
JP2016094867A (en) * 2014-11-13 2016-05-26 日本精工株式会社 Rocker arm
DE102007063725B4 (en) * 2007-03-19 2016-06-02 Bayerische Motoren Werke Aktiengesellschaft wave
EP3056751A1 (en) * 2015-02-16 2016-08-17 Aktiebolaget SKF A rolling bearing and a mechanical system comprising such a rolling bearing
US10527097B2 (en) 2017-03-07 2020-01-07 Aktiebolaget Skf Roller bearing and a mechanical system comprising such a roller bearing
DE102024121755A1 (en) * 2024-07-31 2026-02-05 Schaeffler Technologies AG & Co. KG Axial-radial rolling bearings

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7419036B2 (en) * 2004-07-01 2008-09-02 Knorr-Bremse Systeme Fuer Nutzfahrzeuge Gmbh Disc brake for vehicles having an application device with a needle bearing
JP2007239834A (en) * 2006-03-07 2007-09-20 Jtekt Corp Roller bearing with cage and manufacturing method thereof
WO2008113437A1 (en) 2007-03-19 2008-09-25 Bayerische Motoren Werke Ag Method for arranging an undivided roller bearing at a shaft, and roller bearing therefor
DE102007063725B4 (en) * 2007-03-19 2016-06-02 Bayerische Motoren Werke Aktiengesellschaft wave
US20100129023A1 (en) * 2007-10-03 2010-05-27 The Timken Company Positioning means for camshaft roller bearing
US8568038B2 (en) * 2007-10-03 2013-10-29 Koyo Bearings Usa Llc Positioning means for camshaft roller bearing
US9062709B2 (en) 2007-10-03 2015-06-23 Koyo Bearings North America Llc Positioning means for camshaft roller bearing
JP2009293398A (en) * 2008-06-02 2009-12-17 Ntn Corp Pump tappet
WO2015093348A1 (en) * 2013-12-16 2015-06-25 日本精工株式会社 Cage and roller
JP2015113969A (en) * 2013-12-16 2015-06-22 日本精工株式会社 Cage and roller
CN105829745A (en) * 2013-12-16 2016-08-03 日本精工株式会社 Cage and roller
US10047795B2 (en) 2013-12-16 2018-08-14 Nsk Ltd. Cage and rollers
JP2016050623A (en) * 2014-08-29 2016-04-11 日本精工株式会社 Solid needle bearing
JP2016094867A (en) * 2014-11-13 2016-05-26 日本精工株式会社 Rocker arm
EP3056751A1 (en) * 2015-02-16 2016-08-17 Aktiebolaget SKF A rolling bearing and a mechanical system comprising such a rolling bearing
US10527097B2 (en) 2017-03-07 2020-01-07 Aktiebolaget Skf Roller bearing and a mechanical system comprising such a roller bearing
DE102024121755A1 (en) * 2024-07-31 2026-02-05 Schaeffler Technologies AG & Co. KG Axial-radial rolling bearings

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