JP2006077801A - Roller bearing cage and planetary gear mechanism equipped therewith - Google Patents

Roller bearing cage and planetary gear mechanism equipped therewith Download PDF

Info

Publication number
JP2006077801A
JP2006077801A JP2004259447A JP2004259447A JP2006077801A JP 2006077801 A JP2006077801 A JP 2006077801A JP 2004259447 A JP2004259447 A JP 2004259447A JP 2004259447 A JP2004259447 A JP 2004259447A JP 2006077801 A JP2006077801 A JP 2006077801A
Authority
JP
Japan
Prior art keywords
planetary gear
roller bearing
cage
resin
rib
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
JP2004259447A
Other languages
Japanese (ja)
Inventor
Kenichi Nakaoka
賢一 中岡
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JTEKT Corp
Original Assignee
JTEKT Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by JTEKT Corp filed Critical JTEKT Corp
Priority to JP2004259447A priority Critical patent/JP2006077801A/en
Publication of JP2006077801A publication Critical patent/JP2006077801A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • 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
    • F16C33/56—Selection of substances
    • 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
    • F16C33/4611—Cages for rollers or needles with hybrid structure, i.e. with parts made of distinct materials
    • 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
    • F16C2208/00—Plastics; Synthetic resins, e.g. rubbers
    • F16C2208/20—Thermoplastic resins
    • 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
    • F16C2220/00—Shaping
    • F16C2220/02—Shaping by casting
    • F16C2220/04—Shaping by casting by injection-moulding
    • 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
    • F16C2361/00—Apparatus or articles in engineering in general
    • F16C2361/61—Toothed gear systems, e.g. support of pinion shafts

Landscapes

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

Abstract

<P>PROBLEM TO BE SOLVED: To provide a roller bearing cage having secure strength without increasing weight, size and cost. <P>SOLUTION: The roller bearing cage 1 comprises two annular rib portions 2 opposed to each other at an axial space and integrally connected to a plurality of columnar portions 3 lined at certain circumferential spaces. The rib portions 2 and the columnar portions 3 are formed of resin materials. Annular core materials 8 formed of materials having greater strength than the resin materials are embedded in both rib portions 2, separately. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、ころ軸受用保持器およびこれを備えた遊星歯車機構に関する。   The present invention relates to a roller bearing retainer and a planetary gear mechanism including the same.

ころ軸受用保持器において、所謂かご形タイプでは、軸方向に間隔をあけて位置する２つの円環状のリブ部が円周方向に所定間隔をあけて列設された複数の柱部により一体的に連結され、軸方向両側のリブ部と互いに隣接する柱部とによりころが収納されるポケットが画定されて構成されている（特許文献１参照。）。   In the so-called squirrel cage type roller bearing cage, two annular rib portions positioned at intervals in the axial direction are integrated by a plurality of column portions arranged at predetermined intervals in the circumferential direction. A pocket in which the rollers are accommodated is defined by rib portions on both sides in the axial direction and column portions adjacent to each other (see Patent Document 1).

当該保持器を組み込むころ軸受の使用用途として、例えば自動車の自動変速機（ＡＴ）に組み込まれる遊星歯車機構（ＡＴ用遊星歯車機構）がある。ＡＴ用遊星歯車機構は、太陽歯車の外周囲に該太陽歯車と噛み合う複数の遊星歯車を配置し、これら遊星歯車の外周囲に該遊星歯車と噛み合う内歯車を配置しており、かつ、各遊星歯車の中心孔の内周面と、各中心孔に挿入した遊星歯車支持軸の外周面との間にころ軸受（複数のころとこれらを保持する保持器からなる）が介装されている。このようなＡＴ用遊星歯車機構において、自動車の低燃費、多段化仕様により、遊星歯車キャリア回転数の増大によるころ軸受の回転数の増大や回転遠心力の増大に伴い、保持器重量により当該保持器が相手部材との摺動で樹脂焼付きを生じたり、曲げ応力によりたわみ変形してリブ部が破損したりしやすい等の不具合が発生する恐れがある。そのため、このような用途でのころ軸受用の保持器は、保持器重量の軽量化のため、金属製から樹脂製の保持器を採用することが試みられている。しかしながら、樹脂製保持器の場合、金属製と比較して、強度が、特に、金属製でも不足していたリブ部の強度がさらに大きく劣ったものとなり、実用化できるには至っていない。
特開平１１−３２５０８１号公報 As a use application of the roller bearing incorporating the cage, for example, there is a planetary gear mechanism (AT planetary gear mechanism) incorporated in an automatic transmission (AT) of an automobile. The planetary gear mechanism for AT has a plurality of planetary gears meshing with the sun gear arranged around the outer periphery of the sun gear, and an inner gear meshing with the planetary gear arranged around the planetary gear, and each planetary gear. A roller bearing (consisting of a plurality of rollers and a cage for holding them) is interposed between the inner peripheral surface of the central hole of the gear and the outer peripheral surface of the planetary gear support shaft inserted into each central hole. In such an AT planetary gear mechanism, due to the low fuel consumption and multi-stage specification of the automobile, as the rotational speed of the roller bearing increases due to the increase in the rotational speed of the planetary gear carrier and the rotational centrifugal force increases, the weight is retained by the cage weight. There is a possibility that problems such as the occurrence of resin seizure due to sliding of the container with the mating member, or the rib portion being easily damaged by bending deformation due to bending stress. Therefore, in order to reduce the weight of the cage for the roller bearing cage in such applications, attempts have been made to employ a cage made of metal to resin. However, in the case of the resin cage, the strength, in particular, the strength of the rib portion, which was insufficient even in the case of metal, is much inferior to that of metal, so that it has not been put into practical use.
JP 11-325081 A

したがって、本発明により解決すべき課題は、ころ軸受用保持器を、樹脂製としても、リブ部の強度を少なくとも、金属製保持器と同等程度まで、十分に高く確保可能とし、樹脂製の利点である軽量化を生かし、上記したＡＴ用遊星歯車機構にも実用化可能とすることである。   Therefore, the problem to be solved by the present invention is that even if the roller bearing retainer is made of resin, the strength of the rib portion can be secured sufficiently high to at least the same level as that of a metal retainer, and the advantage of resin It is to make it possible to put it to practical use in the above-described AT planetary gear mechanism by utilizing the weight reduction.

本発明によるころ軸受用保持器は、軸方向に間隔をあけて対向する２つの円環状のリブ部を、円周方向に所定間隔をあけて列設した複数の柱部に一体的に連結したころ軸受用保持器であって、上記リブ部と柱部とを樹脂材料から構成し、両リブ部に個別に上記樹脂材料よりも強度が大きい材料（強度材料）からなる芯材を埋設したことを特徴とするものである。   In the roller bearing retainer according to the present invention, two annular rib portions facing each other with an interval in the axial direction are integrally connected to a plurality of column portions arranged in a row at a predetermined interval in the circumferential direction. A roller bearing retainer in which the rib part and the column part are made of a resin material, and a core material made of a material (strength material) having a strength higher than that of the resin material is embedded in both rib parts. It is characterized by.

上記「埋設」とは、リブ部内に完全に埋め込まれて外部に全く露出していない状態に限定されず、リブ部の外面に芯材の一部が露出し、残部がリブ部内に埋没している状態も含むものである。少なくとも、芯材は、リブ部が相手部材と摺接する部分を構成する樹脂材料の外面に露出しないことが好ましい。リブ部は、円周方向に完全に閉じた環状であることが好ましい。芯材は、金属材料であることが好ましく、特に鋼材を用いることが、より好ましい。芯材は、金属材料に限定されるものではなく、金属材料と同等の強度を有する材料を使用することができる。この材料としては、例えば、樹脂材料に強化繊維を配合して、樹脂材料で形成されるリブ部や柱部よりも強度を大きくしたものも含む。上記リブ部と柱部は、樹脂材料単独で形成されるものに限定されず、例えば、上記リブ部を形成する樹脂材料に他の材料が配合されていてもよい。   The above “embedding” is not limited to a state in which it is completely embedded in the rib portion and is not exposed to the outside at all. A part of the core material is exposed on the outer surface of the rib portion, and the remaining portion is buried in the rib portion. It also includes the state of being. At least, it is preferable that the core material is not exposed to the outer surface of the resin material that constitutes the portion where the rib portion is in sliding contact with the mating member. The rib portion is preferably an annular shape that is completely closed in the circumferential direction. The core material is preferably a metal material, more preferably a steel material. The core material is not limited to the metal material, and a material having the same strength as the metal material can be used. This material includes, for example, a material in which reinforcing fibers are blended with a resin material and have a strength higher than that of a rib portion or a column portion formed of the resin material. The rib portion and the column portion are not limited to those formed by a resin material alone, and for example, other materials may be blended with the resin material forming the rib portion.

本発明によると、各リブ部に金属材料等の樹脂材料より強度のある芯材を埋設したから、各リブ部の強度が増大した結果、軸受回転数や回転遠心力の増大によっても、保持器の特にリブ部の変形が金属製と同等程度に抑制され、当該保持器の相手部材との摺動が減少し、樹脂焼付きの発生が抑制され、リブ部の破損も減らせる。したがって、本発明では、樹脂製としても、リブ部の曲げ強度を少なくとも、金属製保持器と同等程度まで、十分に高く確保可能となり、樹脂製の利点である軽量化を生かせるようになって、上述した自動車のＡＴ用遊星歯車機構の遊星歯車をその支持軸に支持するころ軸受に組み込んで、その実用化を可能にすることができる。なお、本発明では、樹脂量を増大してリブ部の肉厚を厚くして当該リブ部の曲げ強度の増強を図る必要が少ないから、樹脂量を多く使わず、したがって、樹脂製保持器の利点である軽量という長所を生かせるうえ、樹脂材料の使用量増大も無いからコストも安価に済む、等により、自動車のＡＴ用遊星歯車機構に組み込んでその実用化が可能となる。   According to the present invention, since a core material stronger than a resin material such as a metal material is embedded in each rib portion, the strength of each rib portion increases, resulting in an increase in bearing rotational speed and rotational centrifugal force. In particular, deformation of the rib portion is suppressed to the same level as that of metal, sliding with the counterpart member of the cage is reduced, occurrence of resin seizure is suppressed, and damage to the rib portion can be reduced. Therefore, in the present invention, even if it is made of resin, the bending strength of the rib portion can be secured sufficiently high, at least to the same level as that of a metal cage, and it is possible to take advantage of the weight reduction that is an advantage of resin, The above-described planetary gear of the automobile planetary gear mechanism for an automobile can be incorporated into a roller bearing supported by the support shaft, thereby enabling practical use. In the present invention, it is not necessary to increase the resin amount and increase the thickness of the rib portion to increase the bending strength of the rib portion. The advantages of light weight, which is an advantage, can be utilized, and the cost can be reduced because there is no increase in the amount of resin material used, so that it can be put into practical use by being incorporated in an AT planetary gear mechanism of an automobile.

なお、特開平１１−３２５０８１号公報に示す保持器の芯材の場合、円環状の両リブ部だけでなく両リブ部間の複数の柱部にも埋設された寸法が大きく、重量のある芯材構造となっていて、その芯材に樹脂材料を肉付けする構成としたことで金属材料だけで保持器を構成する場合よりも軽量化されるものの、その軽量化の効果は少ないと考えられる。本発明の芯材は、両リブ部に個別に埋設したものであるから、当該芯材をたとえ金属材料としても、芯材の重量は軽く済み、保持器を樹脂製として軽量化を図った効果を生かすことができる上、回転数の増大や回転遠心力の増大に伴い、当該保持器が相手部材との摺動で樹脂焼付きを生じたり、リブ部の破損の可能性が大きく低減されたものである。   In the case of the core material of the cage shown in Japanese Patent Application Laid-Open No. 11-325081, a heavy core with a large dimension embedded in a plurality of pillar portions between both rib portions as well as both annular rib portions. Although it has a material structure and the structure in which the resin material is thickened on the core material is lighter than the case where the cage is made of only the metal material, it is considered that the effect of the weight reduction is small. Since the core material of the present invention is individually embedded in both rib portions, even if the core material is a metal material, the weight of the core material is light, and the weight reduction effect is achieved by making the cage made of resin. As the number of rotations and rotational centrifugal force increased, the cage could cause resin seizure due to sliding with the mating member, and the possibility of damage to the ribs was greatly reduced. Is.

本発明の好ましい実施態様として、上記芯材の一部を、上記柱部の根元にフランジ状に延設する。高回転数、高回転遠心力により柱部に高い曲げ応力が作用してもそのフランジ状延設部により該柱部の根元の曲げ強度が増強されているから、芯材の無い樹脂製保持器よりも、両リブ部の対向距離を長く、すなわち、両リブ部と隣接する柱部とより規定されるポケットの軸方向長さを大きくして該ポケットに収納するころの長さを長くし、また、ポケット数を増やしてころ数を増加させられるので、同一保持器寸法で高負荷仕様の樹脂製保持器を得ることができる。   As a preferred embodiment of the present invention, a part of the core material is extended in a flange shape at the base of the column portion. Even if a high bending stress is applied to the column due to a high rotational speed and a high rotational centrifugal force, the flange-shaped extending portion enhances the bending strength of the base of the column, so there is no resin cage without a core material. Rather than increasing the opposing distance of both ribs, that is, increasing the axial length of the pocket defined by the pillars adjacent to both ribs and increasing the length of the rollers stored in the pocket, Moreover, since the number of rollers can be increased by increasing the number of pockets, it is possible to obtain a resin-made cage that has the same cage dimensions and high load specifications.

本発明によれば、樹脂製保持器の軽量という利点を損なわずにその曲げ強度を確保したころ軸受用保持器を提供できる。   ADVANTAGE OF THE INVENTION According to this invention, the roller bearing retainer which ensured the bending strength can be provided, without impairing the advantage that the resin cage is lightweight.

以下、本発明の最良の形態に係るころ軸受用保持器を、添付図面を参照して詳細に説明する。この形態では、ころ軸受として、針状ころ軸受に適用している。図１は、ころ軸受用保持器単体の一部破断斜視図、図２は、図１のころ軸受用保持器を外輪と内輪との間に組み込んでなるころ軸受の要部の断面図、図３は、図２のＡ−Ａ線断面図である。本形態のころ軸受用保持器１は、軸方向に間隔をあけて対向する２つの円環状のリブ部２と、両リブ部２の軸方向対向間を円周方向に所定間隔をあけて列設した複数の柱部３とを備え、両リブ部２と複数の柱部３とを一体的に連結するとともに、両リブ部２と円周方向で隣接する各柱部３とにより円周方向に複数のころ収納ポケット部４が画定された構成となっている。５はポケット部４に収納される針状ころを示す。本形態のころ軸受用保持器１は、外輪６と内輪７との間に介装されて、外輪６の内周面で案内される外輪案内となっている。   Hereinafter, a roller bearing retainer according to the best mode of the present invention will be described in detail with reference to the accompanying drawings. In this embodiment, the roller bearing is applied to a needle roller bearing. 1 is a partially broken perspective view of a roller bearing cage alone, and FIG. 2 is a cross-sectional view of a main part of a roller bearing in which the roller bearing cage of FIG. 1 is assembled between an outer ring and an inner ring. 3 is a cross-sectional view taken along line AA in FIG. The roller bearing cage 1 of this embodiment includes two annular rib portions 2 that are opposed to each other with an interval in the axial direction, and a row between the opposing portions in the axial direction of both rib portions 2 with a predetermined interval in the circumferential direction. A plurality of pillars 3 provided, and integrally connecting both the ribs 2 and the plurality of pillars 3, and circumferentially by the pillars 3 adjacent to both the ribs 2 in the circumferential direction. A plurality of roller storage pockets 4 are defined. Reference numeral 5 denotes a needle roller accommodated in the pocket portion 4. The roller bearing cage 1 of this embodiment is an outer ring guide that is interposed between the outer ring 6 and the inner ring 7 and is guided by the inner peripheral surface of the outer ring 6.

以上の構成において、各リブ部２と柱部３は樹脂材料により成形されたものであり、その樹脂材料は、特に限定されず、種々のものを用いることができる。この樹脂材料は、摺動性に優れる材料が好ましく、固体潤滑材や潤滑油を配合することも可能である。上記樹脂材料としては、ポリエチレン、ポリアミド、ポリアセタール、ポリエチレンテレフタレート、ポリブチレンテレフタレート、ポリカーボネート、ポリフェニレンサルファイド、ポリエーテルサルフォン、ポリエーテルイミド、ポリアミドイミド、ポリエーテルエーテルケトン、熱可塑性ポリイミド、熱硬化性ポリイミド、エポキシ樹脂、フェノール樹脂等があげられる。   In the above structure, each rib part 2 and the pillar part 3 are shape | molded by the resin material, The resin material is not specifically limited, A various thing can be used. The resin material is preferably a material excellent in slidability, and a solid lubricant or lubricating oil can be blended. Examples of the resin material include polyethylene, polyamide, polyacetal, polyethylene terephthalate, polybutylene terephthalate, polycarbonate, polyphenylene sulfide, polyethersulfone, polyetherimide, polyamideimide, polyetheretherketone, thermoplastic polyimide, thermosetting polyimide, Examples thereof include an epoxy resin and a phenol resin.

固体潤滑材としては、ポリテトラフルオロエチレン、黒鉛、二硫化モリブデン、窒化硼素、二硫化タングステン等一般的な固体潤滑材、スピンドル油、冷凍機油、タービン油、マシン油、ダイナモ油等の鉱油、炭化水素、エステル、ポリグリコール、シリコーン油、フッ素化油、等の合成油等、一般に使用されている潤滑油等の油があげられる。   Solid lubricants include general solid lubricants such as polytetrafluoroethylene, graphite, molybdenum disulfide, boron nitride, tungsten disulfide, mineral oils such as spindle oil, refrigeration oil, turbine oil, machine oil, dynamo oil, carbonization Examples include oils such as lubricating oils that are generally used, such as synthetic oils such as hydrogen, esters, polyglycols, silicone oils, and fluorinated oils.

以上の構成において、上記保持器１は、各リブ部２に当該リブ部２を形成する樹脂材料より大きい強度を有する平板状の環状芯材８が埋設された構造になっている。この環状芯材８の埋設構造は、プレス成形品とした環状芯材８の表面に、上記リブ部２と柱部３それぞれを形成する樹脂材料をインサート成形して形成されてなるものである。このインサート成形の詳細は、周知であるから、その説明を省略する。要するに、本保持器１は、軸方向に間隔をあけて対向する２つの円環状の環状芯材８に保持器１の樹脂部を構成するリブ部２と柱部３とをインサート成形により肉付けしたものである。なお、環状芯材８の材料を金属とする場合は、上記プレス成形品以外に、金属鋳物を用いることができる。   In the configuration described above, the cage 1 has a structure in which each rib portion 2 is embedded with a flat plate-shaped annular core material 8 having a strength higher than that of the resin material forming the rib portion 2. This embedded structure of the annular core material 8 is formed by insert molding a resin material for forming the rib portion 2 and the column portion 3 on the surface of the annular core material 8 formed as a press-molded product. The details of this insert molding are well known, and the description thereof is omitted. In short, the retainer 1 is formed by insert molding the rib portion 2 and the column portion 3 constituting the resin portion of the retainer 1 on two annular annular core members 8 facing each other with an interval in the axial direction. Is. In addition, when making the material of the cyclic | annular core material 8 into a metal, metal casting can be used other than the said press-formed product.

環状芯材８は、上記リブ部２の素材である樹脂材料より強度が大きい材料であれば、その種類に限定されないが、例えば、金属材料や、その他の強度材がある。金属材料としては、上記樹脂材料より強い所定の強度を有するものであれば、特に限定されないが、一般構造圧延鋼材（ＳＳ材）、冷間圧延鋼材（ＳＰＣ材）、炭素鋼鍛鋼管（ＳＦ材）、ぶりき（ＳＰＢ材）、機械構造用合金鋼管（ＳＴＦＳ材）、機械構造用炭素鋼管（ＳＴＫＭ材）、ステンレス鋼板（ＳＵＳ材）、等がある。   The annular core material 8 is not limited to the type as long as the material is stronger than the resin material that is the material of the rib portion 2, but there are, for example, a metal material and other strength materials. The metal material is not particularly limited as long as it has a predetermined strength stronger than that of the resin material. However, the general structure rolled steel material (SS material), cold rolled steel material (SPC material), carbon steel forged steel pipe (SF material). ), Tinplate (SPB material), alloy steel pipe for machine structure (STFS material), carbon steel pipe for machine structure (STKM material), stainless steel plate (SUS material), and the like.

環状芯材８において、上記金属材料以外の材料としては、上記樹脂材料に強化繊維を配合したものでもよい。強化繊維としては、ガラス繊維、カーボン繊維、ピッチ系炭素繊維、ＰＡＮ系炭素繊維、アラミド繊維、アルミナ繊維、ポリエステル繊維、ボロン繊維、炭化珪素繊維、窒化硼素繊維、窒化珪素繊維、金属繊維、アスベスト、石英ウール等の繊維類やこれらを布状に編んだもの、炭酸カルシウムやタルク、シリカ、クレー、マイカ等の鉱物類、硼酸アルミニウムウィスカー、チタン酸カリウムウィスカー等の無機ウィスカー類、カーボンブラック、黒鉛、ポリイミド樹脂やポリベンゾイミダゾール等があげられる。   In the annular core member 8, a material other than the metal material may be a material in which reinforcing fibers are blended with the resin material. Examples of reinforcing fibers include glass fibers, carbon fibers, pitch-based carbon fibers, PAN-based carbon fibers, aramid fibers, alumina fibers, polyester fibers, boron fibers, silicon carbide fibers, boron nitride fibers, silicon nitride fibers, metal fibers, asbestos, Fibers such as quartz wool and those knitted into cloth, minerals such as calcium carbonate, talc, silica, clay, mica, inorganic whiskers such as aluminum borate whisker and potassium titanate whisker, carbon black, graphite, Examples thereof include polyimide resin and polybenzimidazole.

また、環状芯材８の断面形状は、平板状のものに限定されず適宜選定することができる。   Moreover, the cross-sectional shape of the annular core member 8 is not limited to a flat plate shape, and can be appropriately selected.

以上の構成を備えた保持器１においては、当該保持器１の樹脂部であるリブ部２よりも強度が大きい環状芯材８を埋設したから、当該保持器１を組み込んだころ軸受の高回転により該保持器１に大きい回転遠心力が作用しても、保持器１が外径側にたわみにくくなり、保持器１の相手部材との摺動が減少し、樹脂焼付きの発生や、リブ部２の破損を無くせる。また、環状芯材８を備えたから、当該保持器１の肉厚を厚くして曲げ強度の増強を図る必要がなく、軽量となり、また、樹脂材料増大も無く、当該保持器１の製造コストの上昇を来たさずに済む。   In the cage 1 having the above configuration, since the annular core material 8 having a higher strength than the rib portion 2 that is the resin portion of the cage 1 is embedded, the roller bearing incorporating the cage 1 has a high rotation speed. Even if a large rotational centrifugal force acts on the cage 1, the cage 1 is less likely to bend to the outer diameter side, sliding with the mating member of the cage 1 is reduced, resin seizure occurs, ribs The damage of the part 2 can be eliminated. Further, since the annular core member 8 is provided, it is not necessary to increase the bending strength by increasing the thickness of the cage 1, the weight is reduced, and there is no increase in the resin material. You do n’t have to climb.

（他の形態）
図４で示すように、両環状芯材８の一部をフランジ状に、つまりフランジ部８ａとして柱部３の根元３ａに延設することができる。このフランジ部８ａは、柱部３の根元３ａの曲げ強度が強くなる結果、環状芯材８の無い樹脂製保持器よりも、両リブ部２の対向長さを長くしてポケット部４に収納する針状ころ５の長さを長くできる上、ポケット部４の数を増やして針状ころ５の使用数を増加させることが可能となり、同一の保持器寸法で負荷容量を大きくして高負荷仕様の樹脂製保持器を得ることができる。 (Other forms)
As shown in FIG. 4, a part of both annular core members 8 can be extended in a flange shape, that is, as a flange portion 8 a to the root 3 a of the column portion 3. As a result of the bending strength of the base 3 a of the column portion 3 being increased, the flange portion 8 a is stored in the pocket portion 4 with the opposing length of both rib portions 2 longer than that of the resin cage without the annular core member 8. It is possible to increase the length of the needle rollers 5 to be used and increase the number of pocket rollers 4 to increase the number of needle rollers 5 used. A resin cage with specifications can be obtained.

（適用例）
図５は、本発明のころ軸受用保持器を適用したＡＴ用遊星歯車機構の上半分の断面図である。図５を参照して、１１は内歯車、１２は太陽歯車、１３は遊星歯車、１４は遊星歯車支持軸、１５は針状ころ、１６は本発明の保持器、１７は遊星歯車キャリア、１８はワッシャを示す。内歯車１１は、太陽歯車１２および遊星歯車キャリア１７の周囲に、これら太陽歯車１２および遊星歯車キャリア１７に対し相対回転自在に支持されるものであり、内周にはヘリカルギヤが形成されている。太陽歯車１２は、その内周にスプラインが、また、外周にヘリカルギヤがそれぞれ形成されており、この内周に第１回転軸１９がスプライン嵌合されている。遊星歯車１３は、内周が円形の中心孔１３ａを備え、外周にヘリカルギヤが形成されており、この遊星歯車１３それぞれがリング歯車１１と太陽歯車１２とに噛合されている。 (Application example)
FIG. 5 is a cross-sectional view of the upper half of an AT planetary gear mechanism to which the roller bearing cage of the present invention is applied. Referring to FIG. 5, 11 is an internal gear, 12 is a sun gear, 13 is a planetary gear, 14 is a planetary gear support shaft, 15 is a needle roller, 16 is a cage of the present invention, 17 is a planetary gear carrier, 18 Indicates a washer. The internal gear 11 is supported around the sun gear 12 and the planetary gear carrier 17 so as to be rotatable relative to the sun gear 12 and the planetary gear carrier 17, and a helical gear is formed on the inner periphery. The sun gear 12 has a spline formed on the inner periphery and a helical gear formed on the outer periphery, and the first rotary shaft 19 is spline-fitted on the inner periphery. The planetary gear 13 includes a center hole 13 a having a circular inner periphery, and a helical gear is formed on the outer periphery. The planetary gears 13 are engaged with the ring gear 11 and the sun gear 12, respectively.

遊星歯車支持軸１４は、遊星歯車１３の中心孔１３ａに針状ころ１５および保持器１６を介して挿入されている。遊星歯車キャリア１７は、２枚の対向する環状板１７ａ，１７ｂの外径側の円周方向複数箇所を架橋壁（図にあらわれない）で連接したような形状である。第１、第２環状板１７ａ，１７ｂの対応する円周方向複数箇所（３箇所）には、貫通孔１７ａ１，１７ｂ１がそれぞれ厚み方向に沿って設けられており、第１環状板１７ａの貫通孔１７ａ１に遊星歯車配合支持軸１４の一端が、また、第２環状板１７ｂの貫通孔１７ｂ１に遊星歯車支持軸１４の他端がそれぞれ嵌入装着されている。遊星歯車支持軸１４は、キャリア１７に図示しないストッパピンなどを用いて軸方向の位置決めと回り止めとを行うようにしてもよい。また、第１環状板１７ａの中心孔には、スプラインが形成されており、この中心孔に第２回転軸２０がスプライン嵌合されている。   The planetary gear support shaft 14 is inserted into the center hole 13 a of the planetary gear 13 via a needle roller 15 and a cage 16. The planetary gear carrier 17 has a shape in which a plurality of circumferential locations on the outer diameter side of two opposing annular plates 17a and 17b are connected by a bridging wall (not shown in the figure). Through holes 17a1 and 17b1 are provided along the thickness direction at a plurality of corresponding circumferential locations (three locations) of the first and second annular plates 17a and 17b, respectively. One end of the planetary gear blending support shaft 14 is fitted into 17a1, and the other end of the planetary gear support shaft 14 is fitted into the through hole 17b1 of the second annular plate 17b. The planetary gear support shaft 14 may be positioned in the axial direction and stopped by using a stopper pin (not shown) on the carrier 17. A spline is formed in the center hole of the first annular plate 17a, and the second rotary shaft 20 is spline-fitted into the center hole.

上述した装置では、例えば内歯車１は固定とする。まず、第１回転軸１９を駆動する場合には、太陽歯車１２が一体回転するので、遊星歯車１３が自転および公転し、この公転に伴い遊星歯車キャリア１７および第２回転軸２０が従動される。これにより、第１回転軸１９の回転動力が減速されて第２回転軸２０に伝達される。   In the apparatus described above, for example, the internal gear 1 is fixed. First, when the first rotating shaft 19 is driven, the sun gear 12 rotates integrally, so that the planetary gear 13 rotates and revolves, and the planetary gear carrier 17 and the second rotating shaft 20 are driven along with this revolution. . Thereby, the rotational power of the first rotating shaft 19 is decelerated and transmitted to the second rotating shaft 20.

一方、第２回転軸２０を駆動する場合には、遊星歯車キャリア１７が一体回転するので、遊星歯車１３が自転および公転し、この公転に伴い太陽歯車１２および第１回転軸１９が従動される。これにより、第２回転軸２０の回転動力が増速されて第１回転軸１９に伝達される。   On the other hand, when the second rotating shaft 20 is driven, the planetary gear carrier 17 rotates integrally, so that the planetary gear 13 rotates and revolves, and the sun gear 12 and the first rotating shaft 19 are driven by this revolution. . Thereby, the rotational power of the second rotating shaft 20 is increased and transmitted to the first rotating shaft 19.

なお、２１は、遊星歯車支持軸１４に設けられて、針状ころ１５の配置空間に潤滑油を供給するための油通路を示す。油通路２１は、各遊星歯車支持軸１４における一端面側から外周面における針状ころ軌道領域へ潤滑油を導くものであり、油導入穴２１ａと、油供給孔２１ｂとで構成されている。油導入穴２１ａは、各遊星歯車支持軸１４の一端面側から他端側途中まで軸方向に沿って設けられている。油供給孔２１ｂは、油導入穴２１ａの奥側から遊星歯車支持軸１４の外周面における針状ころ軌道領域まで径方向に沿って設けられている。   Reference numeral 21 denotes an oil passage provided on the planetary gear support shaft 14 for supplying lubricating oil to the space in which the needle rollers 15 are arranged. The oil passage 21 guides the lubricating oil from one end surface side of each planetary gear support shaft 14 to the needle roller raceway region on the outer peripheral surface, and includes an oil introduction hole 21a and an oil supply hole 21b. The oil introduction hole 21a is provided along the axial direction from one end face side of each planetary gear support shaft 14 to the middle of the other end side. The oil supply hole 21 b is provided along the radial direction from the back side of the oil introduction hole 21 a to the needle roller raceway region on the outer peripheral surface of the planetary gear support shaft 14.

保持器１６は、２つの円環状のリブ部１６ａ（図１のリブ部２に対応）と、両リブ部１６ａ間で円周方向複数箇所に架け渡される柱部１６ｂ（図１の柱部３に対応）と、各柱部１６ｂの間に設けられて針状ころ１５（図１のころ５に対応）を非分離に収納保持するポケット部１６ｃ（図１のポケット部４に対応）とを備えている。この保持器１６においては、リブ部１６ａに、上記環状芯材１６ｄ（図１の環状芯材８に対応）を埋設して構成されている。この保持器１６は、遊星歯車１３を外輪（図１の外輪６に対応）とし、遊星歯車支持軸１４を内輪（図１の内輪７に対応）とし、遊星歯車１３の内周面で案内される外径案内形式となっている。   The retainer 16 includes two annular rib portions 16a (corresponding to the rib portion 2 in FIG. 1) and column portions 16b (column portions 3 in FIG. 1) spanned at a plurality of locations in the circumferential direction between the rib portions 16a. And a pocket portion 16c (corresponding to the pocket portion 4 in FIG. 1) provided between each column portion 16b and storing and holding the needle rollers 15 (corresponding to the rollers 5 in FIG. 1) in a non-separable manner. I have. The cage 16 is configured by embedding the annular core material 16d (corresponding to the annular core material 8 in FIG. 1) in the rib portion 16a. The retainer 16 has a planetary gear 13 as an outer ring (corresponding to the outer ring 6 in FIG. 1), a planetary gear support shaft 14 as an inner ring (corresponding to the inner ring 7 in FIG. 1), and is guided on the inner peripheral surface of the planetary gear 13. The outer diameter guide form.

本発明の最良の形態に係る保持器の一部破断斜視図The partially broken perspective view of the holder | retainer which concerns on the best form of this invention 図１の保持器をころ軸受に組み込んだ状態を示す要部断面図Sectional drawing of the principal part which shows the state which assembled the cage of FIG. 1 in the roller bearing. 図２のＡ−Ａ線断面図AA line sectional view of FIG. 本発明の他の形態に係るころ軸受用保持器の一部破断斜視図The partially broken perspective view of the roller bearing retainer which concerns on the other form of this invention. 本発明の保持器を適用したＡＴ用遊星歯車機構の上半分の断面図Sectional drawing of the upper half of the planetary gear mechanism for AT to which the cage of the present invention is applied

符号の説明Explanation of symbols

１…ころ軸受用保持器
２…リブ部
３…柱部
４…ポケット部
５…針状ころ
６…外輪
７…内輪
８…環状芯材（芯材）
８ａ…フランジ部 DESCRIPTION OF SYMBOLS 1 ... Roller bearing retainer 2 ... Rib part 3 ... Column part 4 ... Pocket part 5 ... Needle roller 6 ... Outer ring 7 ... Inner ring 8 ... Annular core material (core material)
8a ... Flange

Claims (4)

軸方向に間隔をあけて対向する２つの円環状のリブ部を、円周方向に所定間隔をあけて列設した複数の柱部に一体的に連結したころ軸受用保持器であって、上記リブ部と柱部とを樹脂材料から構成し、両リブ部に個別に上記樹脂材料よりも強度が大きい材料からなる芯材を埋設した、ことを特徴とするころ軸受用保持器。   A roller bearing retainer in which two annular rib portions opposed to each other with an interval in the axial direction are integrally connected to a plurality of column portions arranged at predetermined intervals in the circumferential direction, A roller bearing retainer comprising a rib part and a column part made of a resin material, and a core material made of a material having a strength higher than that of the resin material is embedded in each rib part. 上記芯材の一部を、上記柱部の根元にフランジ状に延設した、ことを特徴とする請求項１に記載のころ軸受用保持器。   The roller bearing retainer according to claim 1, wherein a part of the core material is extended in a flange shape at the base of the column portion. 上記芯材が、金属材料から構成されている、ことを特徴する請求項１または２に記載のころ軸受用保持器。   The roller bearing retainer according to claim 1 or 2, wherein the core material is made of a metal material. 太陽歯車と該太陽歯車を中心にその周囲に設けられた内歯車との間に複数の遊星歯車を円周方向等間隔に介装し、遊星歯車の中心孔の内周面と、この中心孔に挿入した遊星歯車支持軸の外周面との間にころ軸受を介装した遊星歯車機構であって、上記ころ軸受が備える保持器を、請求項１ないし３のいずれか１項に記載の保持器により構成し、かつ、当該保持器を上記遊星歯車の内周面で案内される外径案内とした、ことを特徴とする遊星歯車機構。   A plurality of planetary gears are interposed at equal intervals in the circumferential direction between the sun gear and an inner gear provided around the sun gear, and the inner peripheral surface of the center hole of the planetary gear and the center hole A planetary gear mechanism in which a roller bearing is interposed between an outer peripheral surface of a planetary gear support shaft inserted into the planetary gear support shaft, and the cage included in the roller bearing is the holding according to any one of claims 1 to 3. A planetary gear mechanism, characterized in that it is constituted by a vessel and the retainer is an outer diameter guide guided by the inner peripheral surface of the planetary gear.
JP2004259447A 2004-09-07 2004-09-07 Roller bearing cage and planetary gear mechanism equipped therewith Pending JP2006077801A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2004259447A JP2006077801A (en) 2004-09-07 2004-09-07 Roller bearing cage and planetary gear mechanism equipped therewith

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004259447A JP2006077801A (en) 2004-09-07 2004-09-07 Roller bearing cage and planetary gear mechanism equipped therewith

Publications (1)

Publication Number Publication Date
JP2006077801A true JP2006077801A (en) 2006-03-23

Family

ID=36157435

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2004259447A Pending JP2006077801A (en) 2004-09-07 2004-09-07 Roller bearing cage and planetary gear mechanism equipped therewith

Country Status (1)

Country Link
JP (1) JP2006077801A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014056497A1 (en) * 2012-10-10 2014-04-17 Schaeffler Technologies AG & Co. KG Ball roller bearing
JP2014081017A (en) * 2012-10-15 2014-05-08 Sumitomo Heavy Ind Ltd Gear device
US20150337901A1 (en) * 2013-02-05 2015-11-26 Ntn Corporation Rolling bearing retainer and method for manufacturing such retainer
WO2017098886A1 (en) * 2015-12-10 2017-06-15 Ntn株式会社 Rolling bearing

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014056497A1 (en) * 2012-10-10 2014-04-17 Schaeffler Technologies AG & Co. KG Ball roller bearing
JP2014081017A (en) * 2012-10-15 2014-05-08 Sumitomo Heavy Ind Ltd Gear device
US20150337901A1 (en) * 2013-02-05 2015-11-26 Ntn Corporation Rolling bearing retainer and method for manufacturing such retainer
US9771980B2 (en) * 2013-02-05 2017-09-26 Ntn Corporation Rolling bearing retainer and method for manufacturing such retainer
WO2017098886A1 (en) * 2015-12-10 2017-06-15 Ntn株式会社 Rolling bearing

Similar Documents

Publication Publication Date Title
CN107575469B (en) Tapered roller bearing
JP5845662B2 (en) Single row deep groove type radial ball bearing
JP2009281399A (en) Deep groove ball bearing cage and deep groove ball bearing
JP5228654B2 (en) Tapered roller bearing cage and tapered roller bearing
JP2006077801A (en) Roller bearing cage and planetary gear mechanism equipped therewith
JP2007247857A (en) Bearing device for gear
JP2007292093A (en) Deep groove ball bearing
JP5863284B2 (en) Ball bearing cage and ball bearing
JP2015124796A (en) Tapered roller bearing
JP2011047474A (en) Retainer for bearing and bearing
JP2007127199A (en) Retainer for rolling bearing and rolling bearing
JP2006207684A (en) Rolling bearing
JP5532157B2 (en) Tapered roller bearing cage and tapered roller bearing
JP2012067827A (en) Ball bearing
JP2014005913A (en) Rolling bearing
JP2022149706A (en) Resin-made cage, roller with resin-made cage and planetary gear support structure
JP2013142407A (en) Ball bearing cage and ball bearing
JP5836649B2 (en) Ball bearing cage and ball bearing
JP2013117238A (en) Ball bearing retainer, and ball bearing
JP2008240755A (en) Planetary gear structure
JP2007239854A (en) Synthetic resin holder
JP5703894B2 (en) Ball bearing
JP2006090489A (en) Deep groove ball bearing
JP2012167707A (en) Ball bearing
JP5553958B2 (en) Tapered roller bearing

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20070828

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20090514

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20090519

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20091104