JP2008298230A - Synthetic resin cage for tapered roller bearing and tapered roller bearing - Google Patents

Synthetic resin cage for tapered roller bearing and tapered roller bearing Download PDF

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JP2008298230A
JP2008298230A JP2007146963A JP2007146963A JP2008298230A JP 2008298230 A JP2008298230 A JP 2008298230A JP 2007146963 A JP2007146963 A JP 2007146963A JP 2007146963 A JP2007146963 A JP 2007146963A JP 2008298230 A JP2008298230 A JP 2008298230A
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Prior art keywords
cage
synthetic resin
tapered roller
roller bearing
resin cage
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Japanese (ja)
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Takumi Takeuchi
匠 竹内
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NSK Ltd
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NSK Ltd
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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
    • F16C19/34—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 for both radial and axial load
    • F16C19/36—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 for both radial and axial load with a single row of rollers
    • F16C19/364—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 for both radial and axial load with a single row of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone
    • 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
    • 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
    • F16C33/467—Details of individual pockets, e.g. shape or roller retaining means
    • F16C33/4676—Details of individual pockets, e.g. shape or roller retaining means of the stays separating adjacent cage pockets, e.g. guide means for the bearing-surface of the rollers
    • 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
    • F16C33/66—Special parts or details in view of lubrication
    • F16C33/6637—Special parts or details in view of lubrication with liquid lubricant
    • F16C33/6681—Details of distribution or circulation inside the bearing, e.g. grooves on the cage or passages in the rolling elements
    • 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 synthetic resin cage for a tapered roller bearing, and the tapered roller bearing using the cage, for improving lubrication performance, while avoiding a phenomenon such as separation. <P>SOLUTION: A lubricating oil gathering recessed part 20 is arranged in the circumferential direction of an inner diameter surface 19, on the inner diameter surface 19 of at least two column parts 15 among a plurality of column parts 15 of the synthetic resin cage 14. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、鉄道車両、鉄鋼機械、工作機械、建設機械等の一般産業機械や自動車のトランスミッション等に使用される円錐ころ軸受用の合成樹脂製保持器及びその合成樹脂製保持器を使用した円錐ころ軸受に関するものである。   The present invention relates to a synthetic resin cage for tapered roller bearings used in general industrial machines such as railway vehicles, steel machines, machine tools, construction machines, and automobile transmissions, and a cone using the synthetic resin cage. The present invention relates to a roller bearing.

一般的に、円錐ころ軸受は、円錐状の軌道面を有する外輪と、円錐状の軌道面を有し、該軌道面の小径側に小鍔部、大径側に大鍔部を有する内輪と、外輪の軌道面と内輪の軌道面との間に転動自在に配された複数の円錐ころと、円錐ころを円周方向に所定間隔で案内保持する保持器と、を備えている。   Generally, a tapered roller bearing includes an outer ring having a conical raceway surface, an inner ring having a conical raceway surface, a small flange portion on the small diameter side of the raceway surface, and a large collar portion on the large diameter side. And a plurality of tapered rollers disposed between the raceway surface of the outer ring and the raceway surface of the inner ring, and a cage for guiding and holding the tapered rollers at predetermined intervals in the circumferential direction.

この場合の保持器としては、従来から広く使用されている金属製保持器と、近年使用されるようになってきた合成樹脂製保持器とが知られている。   As a cage in this case, a metal cage that has been widely used conventionally and a synthetic resin cage that has been used in recent years are known.

図７は金属製保持器と合成樹脂製保持器の違いを説明するための部分拡大断面図で、（ａ）は金属製保持器、（ｂ）は合成樹脂製保持器を示している。   FIG. 7 is a partially enlarged cross-sectional view for explaining the difference between a metal cage and a synthetic resin cage, wherein (a) shows a metal cage and (b) shows a synthetic resin cage.

図７（ａ）に示す金属製保持器１０１は、冷間圧延鋼板あるいは熱間圧延鋼板をプレス成形して製作されたものであり、（ｂ）に示す合成樹脂製保持器１０２に比べて強度が高いという長所があり、ころ１０５の径Ｄに対しての保持器１０１の板厚を薄くすることができる。また、保持器１０１の板厚を薄くできることから、ころ１０５が樹脂製保持器１０２に比べて、内外輪の軌道面（図示略）に向けて多く露出することになり、そのために、樹脂製保持器１０２と比較した場合、ころ１０５が潤滑剤と接しやすくなって、潤滑性に優れるようになるという長所もある。   A metal cage 101 shown in FIG. 7A is manufactured by press-forming a cold-rolled steel plate or a hot-rolled steel plate, and is stronger than the synthetic resin cage 102 shown in FIG. There is an advantage that it is high, and the plate thickness of the cage 101 with respect to the diameter D of the roller 105 can be reduced. Further, since the plate thickness of the cage 101 can be reduced, the rollers 105 are exposed more toward the raceway surface (not shown) of the inner and outer rings than the resin cage 102. When compared with the vessel 102, the roller 105 is easy to come into contact with the lubricant, and has an advantage that it has excellent lubricity.

しかし、その反面、高速高負荷等の厳しい使用条件においては、金属製の保持器１０１と、ころ１０５との衝突による振動・騒音の発生や、保持器１０１の摩耗等の不具合が発生しやすい。特に保持器１０１と、ころ１０５の衝突が顕著に発生した場合には、保持器１０１から発生した金属摩耗粉が潤滑油に混入するため、潤滑油が劣化してしまい、軸受の性能が損なれるおそれがある。   However, on the other hand, under severe use conditions such as high speed and high load, problems such as vibration and noise due to collision between the metal cage 101 and the rollers 105 and wear of the cage 101 are likely to occur. In particular, when the collision between the cage 101 and the roller 105 occurs remarkably, the metal wear powder generated from the cage 101 is mixed into the lubricating oil, so that the lubricating oil deteriorates and the performance of the bearing is impaired. There is a fear.

一方、合成樹脂製保持器１０２は、軽量性に優れ、削り出し加工や射出成形などによって、複雑な形状であっても寸法精度に優れた製品を量産できる上、摩耗粉の発生がなく、摩耗粉に起因する不具合も発生しない等の長所がある。   On the other hand, the cage 102 made of synthetic resin is excellent in light weight, and can be mass-produced with excellent dimensional accuracy even if it has a complicated shape by machining or injection molding. There are advantages such as no problems caused by powder.

図８は合成樹脂製保持器の例を示し、（ａ）は全体構成を示す斜視図、（ｂ）は内周側から見た部分斜視図、（ｃ）はころを収納するポケットから見た断面図である。この合成樹脂製保持器１０２は、ころ１０５が収納されるポケット１０２ａを画成する複数の柱部１０２ｂと、柱部１０２ｂを繋ぐ両端の小径及び大径環状部１０２ｃ、１０２ｄとを具備している。柱部１０２ｂは、ころ１０５の母線に沿った方向に延びている。   FIG. 8 shows an example of a synthetic resin cage, (a) is a perspective view showing the overall configuration, (b) is a partial perspective view seen from the inner peripheral side, and (c) is seen from a pocket for storing rollers. It is sectional drawing. The synthetic resin cage 102 includes a plurality of column portions 102b that define pockets 102a in which the rollers 105 are accommodated, and small and large diameter annular portions 102c and 102d at both ends that connect the column portions 102b. . The column part 102 b extends in a direction along the generatrix of the roller 105.

ところで、この種の合成樹脂製保持器１０２は、上述の長所を持っている反面、金属製保持器１０１に比べた場合、強度が劣るという短所があり、そのため、金属製保持器１０１に比べて板厚が厚くなってしまい、その結果、図７に示すように、ころ１０５が保持器１０２に包み込まれるような構造になり、保持器１０２に覆われたころ１０５の面まで潤滑剤が入り込みにくいという問題がある。   By the way, this type of synthetic resin cage 102 has the above-mentioned advantages, but has a disadvantage that it is inferior in strength when compared to the metal cage 101, and therefore, compared with the metal cage 101. As a result, the thickness of the plate increases, and as a result, as shown in FIG. 7, the roller 105 is encased in the cage 102, and the lubricant does not easily enter the surface of the roller 105 covered by the cage 102. There is a problem.

このような合成樹脂製保持器の問題点に対し、潤滑性を向上させるために、図９に示すように、保持器１１２の柱部１１３の内輪側の面（内径面）１１３ａに軸方向に長い潤滑溝１１４を設け、潤滑溝１１４に潤滑油が溜まるようにして、ころ１０５や軌道面への潤滑量を多くするようにした技術が提案されている（例えば、特許文献１参照）。
米国特許第４４２５０１１号明細書 In order to improve the lubricity with respect to the problems of such a synthetic resin cage, as shown in FIG. 9, the inner ring side surface (inner diameter surface) 113a of the column portion 113 of the cage 112 is axially arranged. A technique has been proposed in which a long lubricating groove 114 is provided so that lubricating oil is accumulated in the lubricating groove 114 to increase the amount of lubrication to the rollers 105 and the raceway surface (see, for example, Patent Document 1).
U.S. Pat. No. 4,425,011

しかしながら、特許文献１に記載の技術のように、保持器１１２の柱部１１３の内輪側の面１１３ａに軸方向に長い潤滑溝１１４を設けると、潤滑溝１１４の幅方向の両端の溝縁部１１４ａの肉厚が薄くなってしまうため、該溝縁部１１４ａの強度低下により、その部分が剥離する可能性が出てくる。剥離した場合は、その破片が内外輪の軌道面やころの転動面などを著しく劣化させる。   However, if a long lubricating groove 114 is provided in the axial direction on the inner ring side surface 113a of the pillar portion 113 of the cage 112 as in the technique described in Patent Document 1, groove edges at both ends in the width direction of the lubricating groove 114 are provided. Since the thickness of 114a becomes thin, there is a possibility that the portion will be peeled off due to a decrease in strength of the groove edge portion 114a. In the case of separation, the fragments significantly deteriorate the raceway surfaces of the inner and outer rings and the rolling surfaces of the rollers.

本発明は、上記事情に鑑みて為されたものであり、その目的は、剥離等の現象を避けながら、潤滑性能の向上を図れるようにした円錐ころ軸受用の合成樹脂製保持器とその保持器を使用した円錐ころ軸受を提供することにある。   The present invention has been made in view of the above circumstances, and a purpose thereof is a synthetic resin cage for a tapered roller bearing capable of improving lubrication performance while avoiding a phenomenon such as peeling and its holding. It is to provide a tapered roller bearing using a container.

本発明の上記目的は、下記構成により達成される。
（１） 円周方向に所定の間隔で設けられる複数の柱部と、該複数の柱部の一端同士及び他端同士をそれぞれ繋ぐ小径及び大径環状部と、を有し、前記柱部及び前記小径及び大径環状部とで円錐ころが収納されるポケットを画成する円錐ころ軸受用の合成樹脂製保持器であって、
前記複数の柱部のうちの少なくとも１つの柱部の内径面には、該内径面の円周方向に亘る潤滑油溜り用の凹部が設けられることを特徴とする円錐ころ軸受用の合成樹脂製保持器。
（２） 円錐状の軌道面を有する外輪と、円錐状の軌道面を有し、該軌道面の小径側に小鍔部、大径側に大鍔部を有する内輪と、前記外輪の軌道面と前記内輪の軌道面との間に転動自在に配された複数の円錐ころと、該円錐ころを円周方向に所定間隔で案内保持する保持器と、を備え、前記保持器は、（１）に記載の合成樹脂製保持器が用いられることを特徴とする円錐ころ軸受。 The above object of the present invention is achieved by the following configurations.
(1) having a plurality of pillar portions provided at predetermined intervals in the circumferential direction, and a small-diameter and a large-diameter annular portion respectively connecting one end and the other end of the plurality of pillar portions, A synthetic resin cage for a tapered roller bearing that defines a pocket in which the tapered roller is accommodated by the small diameter and the large diameter annular portion,
A synthetic resin for a tapered roller bearing, wherein a concave portion for retaining a lubricating oil is provided on an inner diameter surface of at least one of the plurality of pillar portions in a circumferential direction of the inner diameter surface. Cage.
(2) An outer ring having a conical raceway surface, an inner ring having a conical raceway surface, having a small flange portion on the small diameter side and a large flange portion on the large diameter side, and the raceway surface of the outer ring And a plurality of tapered rollers that are rotatably arranged between the raceway surface of the inner ring and a retainer that guides and holds the tapered rollers at a predetermined interval in the circumferential direction. A tapered roller bearing using the synthetic resin cage described in 1).

本発明によれば、柱部の内径面に潤滑油溜り用の凹部を設けたので、凹部に一時的に潤滑油を蓄えておくことができ、内外輪の軌道面や円錐ころの転動面に対する潤滑油の供給量を増やすことができる。そのため、潤滑性能の向上と共に油膜形成も良好に行われるようになり、耐摩耗性や耐焼付性を高めることができて、ころがり寿命を延ばすことができる。また、その凹部は、柱部の内径面の円周方向に亘って形成されるので、従来の潤滑溝の溝縁部のような肉薄の部分を生じさせることがなく、剥離の問題を解消することもできる。   According to the present invention, since the concave portion for storing the lubricating oil is provided on the inner diameter surface of the column portion, the lubricating oil can be temporarily stored in the concave portion, and the raceway surface of the inner and outer rings and the rolling surface of the tapered roller It is possible to increase the amount of lubricating oil supplied to the. Therefore, the lubrication performance is improved and the oil film is well formed, and the wear resistance and seizure resistance can be improved, and the rolling life can be extended. In addition, since the concave portion is formed over the circumferential direction of the inner diameter surface of the column portion, it does not cause a thin portion like the groove edge portion of the conventional lubrication groove, eliminating the problem of peeling. You can also

以下、本発明の各実施形態に係る円錐ころ軸受用合成樹脂製保持器及び円錐ころ軸受について図面を参照しながら説明する。   Hereinafter, a synthetic resin cage for a tapered roller bearing and a tapered roller bearing according to each embodiment of the present invention will be described with reference to the drawings.

図１に示す円錐ころ軸受１０は、円錐状の軌道面１１ａを有し、該軌道面１１ａの大径側に大鍔部１１ｂ、小径側に小鍔部１１ｃを有する内輪１１と、円錐状の軌道面１２ａを有する外輪１２と、外輪１２の軌道面１２ａと内輪１１の軌道面１１ａとの間に転動自在に配された複数の円錐ころ１３と、これら円錐ころ１３を円周方向に所定間隔で案内保持する保持器１４と、を備えている。   A tapered roller bearing 10 shown in FIG. 1 has a conical raceway surface 11a, an inner ring 11 having a large collar portion 11b on the large diameter side of the raceway surface 11a and a small collar portion 11c on the small diameter side, and a conical shape. An outer ring 12 having a raceway surface 12a, a plurality of tapered rollers 13 arranged so as to roll between the raceway surface 12a of the outer ring 12 and the raceway surface 11a of the inner ring 11, and these tapered rollers 13 are set in a circumferential direction. And a cage 14 that guides and holds at intervals.

この場合の保持器１４は、合成樹脂製で一体に成形されたもので、図２に示すように、円周方向に所定の間隔で設けられる複数の柱部１５と、該複数の柱部１５の一端同士及び他端同士をそれぞれ繋ぐ小径及び大径環状部１６，１７と、を有し、柱部１５及び小径及び大径環状部１６，１７とで円錐ころ１３（図１参照）が収納されるポケット１８を画成する。そして、各柱部１５の内径面１９に、該内径面１９の円周方向に亘る潤滑油溜り用の凹部２０が形成されている。   The retainer 14 in this case is made of synthetic resin and integrally formed. As shown in FIG. 2, the retainer 14 is provided with a plurality of pillar portions 15 provided at predetermined intervals in the circumferential direction, and the plurality of pillar portions 15. Small-diameter and large-diameter annular portions 16 and 17 that connect one end of each other and the other end of each other. A pocket 18 is defined. A recess 20 for retaining a lubricating oil is formed on the inner diameter surface 19 of each column portion 15 over the circumferential direction of the inner diameter surface 19.

この場合の凹部２０の断面は、図３に示すように、柱部１５の長手方向に沿い且つ柱部１５の内径面１９に垂直な面で切ったときの底面の輪郭が円弧または楕円弧をなすような形状に形成されている。   In this case, as shown in FIG. 3, the recess 20 has a cross-section with a circular arc or elliptical arc when the bottom surface is cut along a plane along the longitudinal direction of the column 15 and perpendicular to the inner diameter surface 19 of the column 15. It is formed in such a shape.

このように柱部１５の内径面に潤滑油溜り用の凹部２０を設けた場合、図３に示すように凹部２０に一時的に潤滑油Ｇを蓄えておくことができ、内外輪１１、１２の軌道面１１ａ、１２ａや円錐ころ１３の転動面に対する潤滑油の供給量を増やすことができる。そのため、潤滑性の向上と共に油膜形成も良好に行われるようになり、耐摩耗性や耐焼付性を高めることができて、ころがり寿命を延ばすことができる。   When the concave portion 20 for retaining the lubricating oil is provided on the inner diameter surface of the column portion 15 as described above, the lubricating oil G can be temporarily stored in the concave portion 20 as shown in FIG. The amount of lubricating oil supplied to the raceway surfaces 11a and 12a and the rolling surfaces of the tapered rollers 13 can be increased. For this reason, the oil film is well formed together with the improvement of the lubricity, the wear resistance and the seizure resistance can be improved, and the rolling life can be extended.

また、その凹部２０は、柱部１５の内径面１９の円周方向に亘って形成されるので、従来の潤滑溝の溝縁部のような肉薄の部分を生じさせることが一切なく、従って溝縁部が剥離するような問題も起こらない。   Further, since the concave portion 20 is formed over the circumferential direction of the inner diameter surface 19 of the column portion 15, there is no thin portion like the groove edge portion of the conventional lubricating groove. The problem that the edge part peels does not occur.

なお、本発明は、上述した実施形態に限定されるものではなく、適宜、変形、改良、等が可能である。その他、上述した実施形態における各構成要素の材質、形状、寸法、数、配置箇所、等は本発明を達成できるものであれば任意であり、限定されない。   In addition, this invention is not limited to embodiment mentioned above, A deformation | transformation, improvement, etc. are possible suitably. In addition, the material, shape, dimensions, number, arrangement location, and the like of each component in the above-described embodiment are arbitrary and are not limited as long as the present invention can be achieved.

例えば、凹部２０の断面形状（柱部１５の長手方向に沿い且つ柱部１５の内径面１９に垂直な面で切ったときの凹部の断面形状）は、上述の例に限られることなく、種々選択可能である。例えば、図４に示す保持器１４Ｂのように、柱部１５の内径面１９に、深さの浅い断面三角形の凹部２０Ｂを設け、図２の凹部２０より保持する潤滑油量を少なくしてもよい。また、図５に示す保持器１４Ｃのように、柱部１５の内径面１９に、深さの浅い断面四角形の凹部２０Ｃを設け、図２の凹部２０より保持する潤滑油量を多くしてもよい。従って、凹部の断面形状の選択は、必要とされる潤滑油量等に応じて適宜行うのが好ましい。   For example, the cross-sectional shape of the recess 20 (the cross-sectional shape of the recess when cut by a plane along the longitudinal direction of the column 15 and perpendicular to the inner diameter surface 19 of the column 15) is not limited to the above example, Selectable. For example, as in a cage 14B shown in FIG. 4, a recess 20B having a shallow cross-sectional triangle is provided on the inner diameter surface 19 of the column 15 so that the amount of lubricating oil retained by the recess 20 in FIG. Good. Further, as in a cage 14C shown in FIG. 5, a recess 20C having a shallow cross-sectional square is provided on the inner diameter surface 19 of the column portion 15, and the amount of lubricating oil retained by the recess 20 in FIG. Good. Therefore, it is preferable to appropriately select the cross-sectional shape of the recess according to the amount of lubricating oil required.

また、凹部２０（２０Ｂ、２０Ｃ）は、全部の柱部１５に設けなくてもよく、例えば、図６（ａ）に示す保持器１４Ｄのように、１つおきの柱部１５に設けてもよい。また、原理的には１つの柱部１５だけに設けてもよいが、バランスを考えた位置に設けるのであれば、任意の２つ以上の柱部１５に設けてもよい。   Moreover, the recessed part 20 (20B, 20C) does not need to be provided in all the column parts 15, for example, may be provided in every other column part 15 like the holder | retainer 14D shown to Fig.6 (a). Good. In principle, it may be provided only on one pillar 15, but it may be provided on any two or more pillars 15 as long as the balance is provided.

また、１本の柱部１５に設ける凹部２０（２０Ｂ、２０Ｃ）の数は、上述の実施形態のように１個に限定されるものではなく、図６（ｂ）に示す保持器１４Ｅのように、１本の柱部１５に２つ以上の凹部２０を設けてもよい。   Further, the number of recesses 20 (20B, 20C) provided in one pillar portion 15 is not limited to one as in the above-described embodiment, but is similar to a cage 14E shown in FIG. 6B. In addition, two or more concave portions 20 may be provided in one column portion 15.

また、柱部１５に設ける凹部２０の位置は、柱部１５の長手方向の中央部ばかりでなく、図６（ｃ）に示す保持器１４Ｆのように、どちらかの環状部１６，１７に近い位置に片寄らせて配置してもよいし、図６（ｄ）に示す保持器１４Ｇのように、凹部２０を片寄らせる方向を交互にして、凹部２０が円周方向に千鳥配置状に並ぶようにしてもよい。   Further, the position of the concave portion 20 provided in the column portion 15 is close not only to the central portion in the longitudinal direction of the column portion 15 but also to one of the annular portions 16 and 17 as in the cage 14F shown in FIG. The positions may be arranged so as to be offset, or like the cage 14G shown in FIG. 6 (d), the direction in which the recesses 20 are offset is alternated so that the recesses 20 are arranged in a staggered manner in the circumferential direction. It may be.

本発明の実施形態の合成樹脂製保持器を用いた円錐ころ軸受の断面図である。It is sectional drawing of the tapered roller bearing using the synthetic resin cage of embodiment of this invention. 同実施形態の合成樹脂製保持器の構成図で、（ａ）は全体斜視図、（ｂ）は内周側（II方向）から見た部分斜視図である。It is a block diagram of the synthetic resin cage | basket of the embodiment, (a) is a whole perspective view, (b) is the fragmentary perspective view seen from the inner peripheral side (II direction). 同保持器のころを収納するポケットから見た断面図である。It is sectional drawing seen from the pocket which accommodates the roller of the cage. 本発明の他の実施形態の合成樹脂製保持器の要部構成を示す図で、（ａ）は内周側から見た部分斜視図、（ｂ）はころを収納するポケットから見た断面図である。It is a figure which shows the principal part structure of the synthetic resin cage of other embodiment of this invention, (a) is the fragmentary perspective view seen from the inner peripheral side, (b) is sectional drawing seen from the pocket which accommodates a roller It is. 本発明の更に他の実施形態の合成樹脂製保持器の要部構成を示す図で、（ａ）は内周側から見た部分斜視図、（ｂ）はころを収納するポケットから見た断面図である。It is a figure which shows the principal part structure of the synthetic resin cage of other embodiment of this invention, (a) is the fragmentary perspective view seen from the inner peripheral side, (b) is the cross section seen from the pocket which accommodates a roller FIG. （ａ）〜（ｄ）は、本発明の更に他の各実施形態の合成樹脂製保持器の要部構成を示す図である。(A)-(d) is a figure which shows the principal part structure of the synthetic resin holder | retainer of other each embodiment of this invention. 従来の金属製保持器と合成樹脂製保持器の違いを説明するための部分拡大断面図であり、（ａ）は金属製保持器、（ｂ）は合成樹脂製保持器を示す図である。It is a partial expanded sectional view for demonstrating the difference between the conventional metal cage and a synthetic resin cage, (a) is a metal cage, (b) is a figure which shows a synthetic resin cage. 従来の合成樹脂製保持器の例を示す図で、（ａ）は全体構成を示す斜視図、（ｂ）は内周側（VIII方向）から見た部分斜視図、（ｃ）はころを収納するポケットから見た断面図である。It is a figure which shows the example of the conventional cage made from a synthetic resin, (a) is a perspective view which shows the whole structure, (b) is a partial perspective view seen from the inner peripheral side (VIII direction), (c) accommodates a roller It is sectional drawing seen from the pocket to do. 従来の他の合成樹脂製保持器の要部構成を示す斜視図である。It is a perspective view which shows the principal part structure of the other conventional synthetic resin cage.

符号の説明Explanation of symbols

１０ 円錐ころ軸受
１１ 内輪
１１ａ 軌道面
１１ｂ 大鍔部
１１ｃ 小鍔部
１２ 外輪
１２ａ 軌道面
１３ 円錐ころ
１４、１４Ｂ、１４Ｃ，１４Ｄ，１４Ｅ，１４Ｆ，１４Ｇ 合成樹脂製保持器
１５ 柱部
１８ ポケット
１９ 内径面
２０，２０Ｂ，２０Ｃ 凹部 DESCRIPTION OF SYMBOLS 10 Tapered roller bearing 11 Inner ring 11a Raceway surface 11b Large collar part 11c Small collar part 12 Outer ring 12a Raceway surface 13 Tapered roller 14, 14B, 14C, 14D, 14E, 14F, 14G Synthetic resin cage 15 Column part 18 Pocket 19 Inner diameter Surface 20, 20B, 20C Recess

Claims (2)

円周方向に所定の間隔で設けられる複数の柱部と、該複数の柱部の一端同士及び他端同士をそれぞれ繋ぐ小径及び大径環状部と、を有し、前記柱部及び前記小径及び大径環状部とで円錐ころが収納されるポケットを画成する円錐ころ軸受用の合成樹脂製保持器であって、
前記複数の柱部のうちの少なくとも１つの柱部の内径面には、該内径面の円周方向に亘る潤滑油溜り用の凹部が設けられることを特徴とする円錐ころ軸受用の合成樹脂製保持器。 A plurality of column portions provided at predetermined intervals in the circumferential direction, and a small diameter and a large diameter annular portion that connect one end and the other end of the plurality of column portions, respectively, and the column portions and the small diameter and A synthetic resin cage for a tapered roller bearing that defines a pocket in which a tapered roller is stored with a large-diameter annular portion,
A synthetic resin for a tapered roller bearing, wherein a concave portion for retaining a lubricating oil is provided on an inner diameter surface of at least one of the plurality of pillar portions in a circumferential direction of the inner diameter surface. Cage. 円錐状の軌道面を有する外輪と、円錐状の軌道面を有し、該軌道面の小径側に小鍔部、大径側に大鍔部を有する内輪と、前記外輪の軌道面と前記内輪の軌道面との間に転動自在に配された複数の円錐ころと、該円錐ころを円周方向に所定間隔で案内保持する保持器と、を備え、前記保持器は、請求項１に記載の合成樹脂製保持器が用いられることを特徴とする円錐ころ軸受。   An outer ring having a conical raceway surface, an inner ring having a conical raceway surface, having a small flange portion on the small diameter side and a large collar portion on the large diameter side, the raceway surface of the outer ring and the inner ring A plurality of tapered rollers that are arranged so as to roll freely between the raceway surfaces, and a cage that guides and holds the tapered rollers at a predetermined interval in the circumferential direction. A tapered roller bearing using the described synthetic resin cage.
JP2007146963A 2007-06-01 2007-06-01 Synthetic resin cage for tapered roller bearing and tapered roller bearing Pending JP2008298230A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103104609A (en) * 2012-12-28 2013-05-15 瓦房店轴承集团有限责任公司 Novel structure retainer of conical bearing with low rotation torque
US20160040716A1 (en) * 2013-04-04 2016-02-11 Nsk Ltd. Resin cage for tapered roller bearing and tapered roller bearing including the resin cage
US20170122368A1 (en) * 2015-10-30 2017-05-04 Jtekt Corporation Tapered Roller Bearing
US10302131B2 (en) 2012-12-25 2019-05-28 Nsk Ltd. Tapered roller bearing

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10302131B2 (en) 2012-12-25 2019-05-28 Nsk Ltd. Tapered roller bearing
CN103104609A (en) * 2012-12-28 2013-05-15 瓦房店轴承集团有限责任公司 Novel structure retainer of conical bearing with low rotation torque
US20160040716A1 (en) * 2013-04-04 2016-02-11 Nsk Ltd. Resin cage for tapered roller bearing and tapered roller bearing including the resin cage
US9995341B2 (en) 2013-04-04 2018-06-12 Nsk Ltd. Resin cage for tapered roller bearing and tapered roller bearing including the resin cage
US20170122368A1 (en) * 2015-10-30 2017-05-04 Jtekt Corporation Tapered Roller Bearing
US9903412B2 (en) * 2015-10-30 2018-02-27 Jtekt Corporation Tapered roller bearing

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