JP2009191990A - Resin cage and tapered roller bearing - Google Patents

Resin cage and tapered roller bearing Download PDF

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Publication number
JP2009191990A
JP2009191990A JP2008034474A JP2008034474A JP2009191990A JP 2009191990 A JP2009191990 A JP 2009191990A JP 2008034474 A JP2008034474 A JP 2008034474A JP 2008034474 A JP2008034474 A JP 2008034474A JP 2009191990 A JP2009191990 A JP 2009191990A
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Prior art keywords
cage
resin
diameter side
circumferential direction
small
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Japanese (ja)
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Hideo Nishizawa
英雄 西澤
Azusa Otani
梓 大谷
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NSK Ltd
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NSK Ltd
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30Parts of ball or roller bearings
    • F16C33/46Cages for rollers or needles
    • F16C33/50Cages for rollers or needles formed of interconnected members, e.g. chains
    • F16C33/502Cages for rollers or needles formed of interconnected members, e.g. chains formed of arcuate segments retaining one or more rollers or needles
    • F16C33/504Cages for rollers or needles formed of interconnected members, e.g. chains formed of arcuate segments retaining one or more rollers or needles with two segments, e.g. two semicircular cage parts
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00Bearings with rolling contact, for exclusively rotary movement
    • F16C19/22Bearings 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
    • F16C19/34Bearings 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
    • F16C19/36Bearings 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
    • F16C19/364Bearings 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30Parts of ball or roller bearings
    • F16C33/46Cages for rollers or needles
    • F16C33/4617Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages
    • F16C33/4623Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages formed as one-piece cages, i.e. monoblock cages
    • F16C33/4635Massive 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2226/00Joining parts; Fastening; Assembling or mounting parts
    • F16C2226/50Positive connections
    • F16C2226/70Positive connections with complementary interlocking parts
    • F16C2226/74Positive connections with complementary interlocking parts with snap-fit, e.g. by clips
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2226/00Joining parts; Fastening; Assembling or mounting parts
    • F16C2226/50Positive connections
    • F16C2226/70Positive connections with complementary interlocking parts
    • F16C2226/76Positive connections with complementary interlocking parts with tongue and groove or key and slot
    • F16C2226/78Positive connections with complementary interlocking parts with tongue and groove or key and slot of jigsaw-puzzle type

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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 resin cage reduced in weight and easily fitted to an inner ring even when the outer diameter of a small collar of the inner ring is larger than the small diameter side inner diameter of the cage. <P>SOLUTION: The resin cage 23 of the tapered roller bearing 21 comprising a small diameter side rim part 24 and a large diameter side rim part 25, and a plurality of pillar parts 26 serving as axial bridges between this pair of rim parts 24, 26, is composed of a plurality of divided pieces 23a, 23b connected in a circumferential direction. The respective divided pieces 23a, 23b are equipped with connection structures 31 attaining connection to the adjacent divided pieces 23a, 23b. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、円錐ころ軸受の内外輪間に装備される複数個の円錐ころを所定の間隔に保持する樹脂製保持器と、この樹脂製保持器を具備した円錐ころ軸受に関する。   The present invention relates to a resin cage for holding a plurality of tapered rollers provided between inner and outer rings of a tapered roller bearing at a predetermined interval, and a tapered roller bearing provided with the resin cage.

円錐ころ軸受は、通常、内輪外周の円錐形軌道面と外輪内周の円錐形軌道面との間に配置される複数個の円錐ころ相互の周方向の間隔が、内外輪間を周回する保持器により保持されている。   In the tapered roller bearing, the circumferential interval between the plurality of tapered rollers disposed between the conical raceway surface on the outer periphery of the inner ring and the conical raceway surface on the inner periphery of the outer ring is usually held between the inner and outer rings. Is held by a vessel.

上記保持器としては、円錐ころ軸受の内輪小鍔側で内外輪間を周回する円環状に形成された小径側リム部と、内輪大鍔側で内外輪間を周回する円環状に形成された大径側リム部と、これらの一対のリム部間に軸方向に橋渡しされる複数本の柱部とを備え、隣接する柱部間が内外輪間に装着される円錐ころを転動自在に保持するポケットとなる構造のものが普及している。
そして、上記構造の保持器としては、金属板のプレス成形により一体形成された金属製保持器が知られている。
The retainer is formed in an annular shape that circulates between the inner and outer rings on the inner ring large flange side, and a small-diameter side rim portion formed in an annular shape that circulates between the inner and outer rings on the inner ring small collar side of the tapered roller bearing. A large-diameter side rim portion and a plurality of pillar portions bridged in the axial direction between the pair of rim portions, and a tapered roller mounted between the inner and outer rings can be freely rolled between adjacent pillar portions. The thing of the structure used as the pocket to hold | maintain is prevailing.
As a cage having the above structure, a metal cage integrally formed by press molding of a metal plate is known.

また、このような金属製保持器を使用する円錐ころ軸受では、通常、各ポケットに円錐ころを配置した保持器を内輪小鍔側から内輪外周に装着した後、保持器の端部を加締めることにより、保持器と内輪小鍔とで円錐ころを保持させる。   Further, in a tapered roller bearing using such a metal cage, a cage having a tapered roller arranged in each pocket is usually mounted on the outer circumference of the inner ring from the inner ring edge side, and then the end of the cage is crimped. Thus, the tapered roller is held by the cage and the inner ring gavel.

ところで、円錐ころ軸受は、ラジアル荷重だけでなく、アキシアル荷重を受けることもできるため、玉軸受と比較して負荷容量を高く設定できる利点があり、自動車や産業機械の最終減速装置部分などに使用される場合も多い。
そして、最終減速装置部分などに使用される場合は、装置内の潤滑油が、軸受内部の潤滑にも利用されることが少なくない。
By the way, tapered roller bearings can receive not only radial loads but also axial loads, so there is an advantage that the load capacity can be set higher than ball bearings, and it is used for the final reduction gear part of automobiles and industrial machines. There are many cases.
When used in the final reduction gear portion, the lubricating oil in the device is often used for lubrication inside the bearing.

その場合、装置内の潤滑油は、内輪の小鍔側から軸受内部に流入して大鍔側から流出する。このような円錐ころ軸受の使用状況において、内輪の小鍔側から軸受内部へは潤滑油が流入し易く、大鍔側は流出し難い場合には、軸受内部に必要以上の潤滑油が滞留し、その撹拌抵抗のために、軸受の回転抵抗(軸受トルク損失)が増大するという問題が生じる。   In that case, the lubricating oil in the apparatus flows into the bearing from the small collar side of the inner ring and flows out from the large collar side. When such tapered roller bearings are used, if lubricating oil tends to flow into the bearing from the small collar side of the inner ring and difficult to flow out from the large collar side, excessive lubricating oil will remain in the bearing. Because of the stirring resistance, there arises a problem that the rotational resistance (bearing torque loss) of the bearing increases.

そこで、撹拌抵抗に起因する軸受の回転抵抗の増大を防止することから、保持器の小径側内径よりも内輪小鍔の外径を大きく設定して、内輪の小鍔側から軸受内部への潤滑油の流入を低減させるようにした円錐ころ軸受が提案されている(例えば、下記特許文献1の図1及び図2参照)。   Therefore, in order to prevent an increase in the rotational resistance of the bearing due to the agitation resistance, the outer ring diameter of the inner ring is set larger than the small diameter side diameter of the cage, and lubrication from the small ring side of the inner ring to the inside of the bearing is performed. A tapered roller bearing that reduces the inflow of oil has been proposed (see, for example, FIGS. 1 and 2 of Patent Document 1 below).

特再2005−045269号公報Japanese Patent Publication No. 2005-045269

ところが、保持器の小径側内径よりも内輪小鍔の外径を大きく設定した円錐ころ軸受では、前述のように金属板により一体形成した従来の金属製保持器は、保持器の小径側リム部が内輪小鍔を乗り越えられないため、組み付けることができない。
従って、撹拌抵抗の低減のために内輪小鍔の外径を保持器の小径側内径よりも大きく設定した円錐ころ軸受を実現するには、内輪小鍔の外径に関係なく保持器の組付けが可能なように、保持器の構造の改良が必要となる。
However, in the tapered roller bearing in which the outer diameter of the inner ring collar is set larger than the inner diameter of the small diameter side of the cage, the conventional metal cage integrally formed of the metal plate as described above is the rim portion on the small diameter side of the cage. Can not be assembled because it cannot get over the inner ring.
Therefore, in order to realize a tapered roller bearing in which the outer diameter of the inner ring collar is set larger than the inner diameter on the smaller diameter side of the cage in order to reduce the stirring resistance, the cage is assembled regardless of the outer diameter of the inner ring collar. Therefore, it is necessary to improve the structure of the cage.

また、近年、自動車や産業機械の業界では、省エネルギー化が重要命題とされており、使用する軸受などにも、省エネルギー化のために小型化や軽量化の要求が強まっており、前述の金属製の保持器は、軽量化の点でも不利になっている。   In recent years, energy saving has been an important proposition in the automobile and industrial machinery industries, and the demand for downsizing and lightening of the bearings used for energy saving has increased. The cage is disadvantageous in terms of weight reduction.

そこで、本発明の目的は上記課題を解消することに係り、省エネルギー化に必要な軽量化を実現でき、しかも、内輪小鍔の外径が保持器の小径側内径よりも大きくなる場合でも内輪への組付けが容易にできる樹脂製保持器及び円錐ころ軸受を提供し、もって、内輪小鍔の外径の大径化により円錐ころ軸受の撹拌抵抗の低減を達成する。   Accordingly, an object of the present invention is to solve the above-mentioned problems, and can realize a reduction in weight necessary for energy saving. Moreover, even when the outer diameter of the inner ring gavel is larger than the inner diameter of the cage on the smaller diameter side, A resin cage and a tapered roller bearing that can be easily assembled are provided, and a reduction in stirring resistance of the tapered roller bearing is achieved by increasing the outer diameter of the inner ring collar.

上記目的は下記構成により達成される。
(1)円錐ころ軸受の内輪小鍔側で内外輪間を周回する円環状に形成された小径側リム部と、内輪大鍔側で内外輪間を周回する円環状に形成された大径側リム部と、これらの一対のリム部間に軸方向に橋渡しされる複数本の柱部とを備え、隣接する柱部間が内外輪間に装着される円錐ころを転動自在に保持するポケットとなる円錐ころ軸受の樹脂製保持器であって、
周方向に連結された複数個の分割片により構成され、各分割片には、隣接する分割片との連結を果たす連結構造を設けたことを特徴とする樹脂製保持器。
The above object is achieved by the following configuration.
(1) A small-diameter rim portion formed in an annular shape that circulates between the inner and outer rings on the inner ring small flange side of the tapered roller bearing, and a large-diameter side formed in an annular shape that circulates between the inner and outer rings on the inner ring large flange side. A pocket that includes a rim portion and a plurality of column portions that are bridged in the axial direction between the pair of rim portions, and holds a tapered roller that is mounted between the inner and outer rings so as to be rotatable between adjacent column portions. A resin cage for a tapered roller bearing,
A resin retainer comprising a plurality of divided pieces connected in the circumferential direction, and each divided piece is provided with a connecting structure for connecting to an adjacent divided piece.

(2)上記(1)に記載の樹脂製保持器おいて、前記連結構造が、隣接する分割片相互の周方向に突き合される互いの端縁において、一方の端縁に設けられた係合部と、他方の端縁に設けられて前記係合部が係合する係合受け部と、による係合構造であることを特徴とする樹脂製保持器。   (2) In the resin cage as described in (1) above, the connection structure is provided at one end edge of each other at the end edges that are abutted in the circumferential direction between adjacent divided pieces. A resin cage characterized by having an engagement structure comprising a joint portion and an engagement receiving portion which is provided at the other end edge and engages with the engagement portion.

(3)上記(1)に記載の樹脂製保持器おいて、前記連結構造が、各分割片の前記小径側リム部又は大径側リム部を構成する相当部位に周方向に沿って形成されて、複数個の分割片を周方向に並べたときに周方向に連なる環状溝となる連結用溝と、前記環状溝に嵌合されて複数個の分割片を一括する結束輪とによる結束構造であることを特徴とする樹脂製保持器。   (3) In the resin cage as described in (1) above, the connection structure is formed along a circumferential direction in a corresponding portion constituting the small diameter rim portion or the large diameter rim portion of each divided piece. And a bundling structure including a connecting groove that becomes an annular groove continuous in the circumferential direction when a plurality of divided pieces are arranged in the circumferential direction, and a bundling ring that is fitted into the annular groove and collects the plurality of divided pieces together. A resin cage characterized by being.

(4)上記(2)又は(3)に記載の樹脂製保持器おいて、前記連結構造として、前記係合構造と、前記結束構造との双方が設けられたことを特徴とする樹脂製保持器。   (4) The resin retainer according to (2) or (3), wherein both the engagement structure and the bundling structure are provided as the connection structure. vessel.

(5)内外輪間に装備する複数個の円錐ころを転動自在に保持する保持器として、上記(1)乃至(4)のいずれか一つに記載の樹脂製保持器を使用したことを特徴とする円錐ころ軸受。   (5) The resin cage according to any one of the above (1) to (4) is used as a cage that rotatably holds a plurality of tapered rollers provided between the inner and outer rings. Characteristic tapered roller bearing.

上記の樹脂製保持器は、樹脂製としたことで従来の金属製のものよりも軽量化することが可能になり、省エネルギー化に必要な軽量化を実現できる。
また、周方向に複数の分割片に分割されているため、各分割片を円錐ころ軸受の内輪外周で連結一体化することにより、内輪小鍔の外径が保持器の小径側内径よりも大きくなる場合でも内輪への組付けが容易にできる。
Since the above-mentioned resin cage is made of resin, it can be made lighter than a conventional metal one, and light weight necessary for energy saving can be realized.
In addition, since it is divided into a plurality of divided pieces in the circumferential direction, by connecting and integrating the divided pieces on the outer periphery of the inner ring of the tapered roller bearing, the outer diameter of the inner ring gavel is larger than the inner diameter on the smaller diameter side of the cage. Even in this case, it can be easily assembled to the inner ring.

上記の円錐ころ軸受は、周方向に分割可能な樹脂製保持器を使用したことで、内輪小鍔の外径が保持器の小径側内径よりも大きく設定されている場合でも内輪への組付けが容易にでき、装置内の潤滑油が軸受内部の潤滑にも利用される環境で使用される場合でも、内輪小鍔の外径の大径化により軸受内への潤滑油の過剰流入を防止して、円錐ころ軸受の撹拌抵抗の低減を達成することもできる。   The above tapered roller bearing uses a plastic cage that can be divided in the circumferential direction, so that the inner ring can be assembled to the inner ring even when the outer diameter of the inner ring is smaller than the inner diameter of the smaller diameter side of the cage. Even when used in an environment where the lubrication oil in the equipment is also used for lubrication inside the bearing, the outer diameter of the inner ring collar is increased to prevent excessive lubrication of the lubrication oil into the bearing. Thus, it is possible to reduce the stirring resistance of the tapered roller bearing.

以下、本発明に係る樹脂製保持器及び円錐ころ軸受の好適な実施の形態について、図面を参照して詳細に説明する。
図1は本発明に係る樹脂製保持器を使用した円錐ころ軸受の第1の実施の形態の要部の縦断面図、図2は図1に示した樹脂製保持器の斜視図、図3は図2に示した樹脂製保持器の分解斜視図、図4は図3に示した樹脂製保持器の分割片相互を連結状態にする操作の説明図である。
Hereinafter, preferred embodiments of a resin cage and a tapered roller bearing according to the present invention will be described in detail with reference to the drawings.
FIG. 1 is a longitudinal sectional view of a main part of a first embodiment of a tapered roller bearing using a resin cage according to the present invention, FIG. 2 is a perspective view of the resin cage shown in FIG. FIG. 4 is an exploded perspective view of the resin cage shown in FIG. 2, and FIG. 4 is an explanatory view of an operation for bringing the divided pieces of the resin cage shown in FIG. 3 into a connected state.

この第1の実施の形態の円錐ころ軸受21は、回転軸(不図示)に嵌合する内輪3の外周の円錐形軌道面4とハウジング5に嵌合する外輪6の内周の円錐形軌道面7との間に配置される複数個の円錐ころ(転動体)9相互の周方向の間隔が、内外輪間を周回する樹脂製保持器23により保持されている。   The tapered roller bearing 21 according to the first embodiment includes a conical raceway 4 on the outer periphery of the inner ring 3 fitted to a rotating shaft (not shown) and a conical raceway on the inner circumference of the outer ring 6 fitted to the housing 5. A plurality of tapered rollers (rolling elements) 9 arranged between the surface 7 and the circumferential interval between them are held by a resin cage 23 that circulates between the inner and outer rings.

樹脂製保持器23は、図1及び図2に示すように、内輪3の小鍔3a側で内外輪間を周回する円環状に形成された小径側リム部24と、内輪3の大鍔3b側で内外輪間を周回する円環状に形成された大径側リム部25と、これらの一対のリム部24,25間に軸方向に橋渡しされる複数本の柱部26とを備え、隣接する柱部26間が内外輪間に装着される円錐ころ9を転動自在に保持するポケット13となっている。   As shown in FIGS. 1 and 2, the resin cage 23 includes a small-diameter side rim portion 24 formed in an annular shape that circulates between the inner and outer rings on the small collar 3 a side of the inner ring 3, and a large collar 3 b of the inner ring 3. A large-diameter rim portion 25 formed in an annular shape that circulates between the inner and outer rings on the side, and a plurality of column portions 26 that are bridged in the axial direction between the pair of rim portions 24, 25, and adjacent to each other Between the column parts 26 to be formed is a pocket 13 for holding the tapered roller 9 mounted between the inner and outer rings so as to be freely rollable.

本実施の形態の円錐ころ軸受21では、車両の減速装置部分などに使用されて装置内の潤滑油が軸受内部の潤滑にも利用される場合に、内輪3の小鍔3a側から軸受内部に流入する潤滑油量を必要最小限にして、潤滑油の過剰流入に起因した撹拌抵抗の増大を防止するために、図1に示すように、内輪小鍔3aの外径Dが保持器23の小径側内径である小径側リム部24の内径dよりも大きく設定されている。   In the tapered roller bearing 21 according to the present embodiment, when the lubricating oil in the device is used for lubricating the inside of the bearing, which is used for a reduction gear portion of the vehicle, the inner ring 3 is moved from the small collar 3a side to the inside of the bearing. In order to minimize the amount of lubricating oil flowing in and prevent an increase in stirring resistance due to excessive inflow of lubricating oil, as shown in FIG. It is set larger than the inner diameter d of the small diameter side rim portion 24 which is the small diameter side inner diameter.

更に、本実施の形態の樹脂製保持器23は、図2に示すように、周方向に連結された2個の分割片23a,23bにより構成されている。
更に詳述すると、図3に示すように、円環状の小径側リム部24は周方向に連結される2つの半円弧形の小径側リム片24a,24bにより構成され、円環状の大径側リム部25は周方向に連結される2つの半円弧形の大径側リム片25a,25bにより構成されている。そして、一方の分割片23aは、小径側リム片24aと、大径側リム片25aと、これらの一対のリム片24a,25aの間に軸方向に橋渡しされる複数本の柱部26と、で構成されている。また、他方の分割片23bは、小径側リム片24bと、大径側リム片25bと、これらの一対のリム片24b,25bの間に軸方向に橋渡しされる複数本の柱部26と、で構成されている。
Furthermore, as shown in FIG. 2, the resin cage 23 of the present embodiment is constituted by two divided pieces 23a and 23b connected in the circumferential direction.
More specifically, as shown in FIG. 3, the annular small-diameter side rim portion 24 is composed of two semicircular arc-shaped small-diameter side rim pieces 24a and 24b connected in the circumferential direction. The side rim portion 25 is composed of two semicircular arc-shaped large-diameter side rim pieces 25a and 25b connected in the circumferential direction. One divided piece 23a includes a small-diameter side rim piece 24a, a large-diameter side rim piece 25a, and a plurality of column portions 26 bridged in the axial direction between the pair of rim pieces 24a and 25a, It consists of The other divided piece 23b includes a small-diameter side rim piece 24b, a large-diameter side rim piece 25b, and a plurality of column portions 26 bridged in the axial direction between the pair of rim pieces 24b and 25b, It consists of

そして、各分割片23a,23bには、図2及び図3に示すように、隣接する他の分割片との連結を果たす連結構造31を設けている。
本実施の形態に示した連結構造31は、隣接する分割片23a,23b相互の周方向に突き合される互いの端縁において、一方の端縁に設けられた係合部32と、他方の端縁に設けられて係合部32が係合する係合受け部33と、による係合構造である。
As shown in FIGS. 2 and 3, each divided piece 23 a, 23 b is provided with a connection structure 31 that performs connection with other adjacent divided pieces.
The connecting structure 31 shown in the present embodiment includes an engaging portion 32 provided at one end edge of the adjacent split pieces 23a and 23b that face each other in the circumferential direction, and the other end. This is an engagement structure including an engagement receiving portion 33 provided at the end edge and engaged with the engagement portion 32.

更に、本実施の形態の連結構造31の場合、図3に示すように、係合部32は、小径側リム部24側から大径側リム部25に向かって軸方向に突出した係合用の突片32aと、係合受け部33に装備された係合用の突片33aが係合可能な係合受け溝32bとを備えている。
そして、係合受け部33は、前記突片32aとは逆向きに大径側リム部25側から小径側リム部24に向かって軸方向に突出した係合用の突片33aと、係合部32に装備された係合用の突片32aが係合可能な係合受け溝33bとを備えている。
以上の係合部32と係合受け部33とにおいて、突片32aと突片33aとは互いに向かって反対の形状であり、また、係合受け溝32bと係合受け溝33bとも互いに向かって反対の形状である。
Further, in the case of the connecting structure 31 of the present embodiment, as shown in FIG. 3, the engaging portion 32 is an engaging portion protruding in the axial direction from the small diameter rim portion 24 side toward the large diameter rim portion 25. The protrusion 32a and the engagement receiving groove 32b with which the engagement protrusion 33a equipped in the engagement receiving portion 33 can be engaged are provided.
The engagement receiving portion 33 includes an engagement protrusion 33a protruding in the axial direction from the large-diameter side rim portion 25 toward the small-diameter side rim portion 24 in an opposite direction to the protrusion 32a, and an engagement portion. 32 is provided with an engagement receiving groove 33b with which an engagement protrusion 32a mounted on the engagement member 32 can be engaged.
In the engaging portion 32 and the engaging receiving portion 33 described above, the projecting piece 32a and the projecting piece 33a have shapes opposite to each other, and the engaging receiving groove 32b and the engaging receiving groove 33b are also directed toward each other. The opposite shape.

即ち、係合部32と係合受け部33は、略点対称の凹凸構造になっており、図4(a)の矢印A,Bに示すように、一方の分割片23bの周方向両端の係合部32と係合受け部33とを小径側リム片24b及び大径側リム片25bの弾性変形を利用して径方向外側に押し開き、それぞれの部位32,33を図4(b)に矢印C,Dで示すように、他方の分割片23aの周方向両端の係合受け部33と係合部32の上に重る位置で元に戻すことで、隣接する係合部32と係合受け部33とを係合させて、分割片23aと分割片23bとを連結・一体化する。   That is, the engaging portion 32 and the engaging receiving portion 33 have a substantially point-symmetrical concavo-convex structure, and as shown by arrows A and B in FIG. 4A, at both ends in the circumferential direction of one divided piece 23b. The engaging portion 32 and the engaging receiving portion 33 are pushed and opened outward in the radial direction by utilizing elastic deformation of the small-diameter side rim piece 24b and the large-diameter side rim piece 25b, and the respective portions 32 and 33 are shown in FIG. As shown by arrows C and D in FIG. 2, the engagement portions 32 and the engagement portions 32 at both ends in the circumferential direction of the other split piece 23a are returned to the original positions at positions overlapping with the engagement portions 32. The engagement receiving portion 33 is engaged, and the divided piece 23a and the divided piece 23b are connected and integrated.

図4に示した一対の分割片23a,23bの連結構造31による連結は、各分割片23a,23bを、それぞれのポケット13に円錐ころ9を装着した状態で内輪3の外周囲に配置した後で行う。
このように樹脂製保持器23の組み立てを行うことで、図1に示したように連結・一体化された樹脂製保持器23の小径側リム部24の内径dよりも内輪小鍔3aの外径Dが大きくても、内輪3上に簡単に樹脂製保持器23を装着した状態を得ることができる。
The connection by the connection structure 31 of the pair of split pieces 23a and 23b shown in FIG. 4 is performed after the split pieces 23a and 23b are arranged around the outer periphery of the inner ring 3 with the tapered rollers 9 mounted in the respective pockets 13. To do.
By assembling the resin cage 23 in this way, the outer ring of the inner ring 3a is more external than the inner diameter d of the small diameter rim portion 24 of the resin cage 23 connected and integrated as shown in FIG. Even when the diameter D is large, it is possible to obtain a state in which the resin cage 23 is easily mounted on the inner ring 3.

また、本実施の形態では、一対の分割片23a,23bを、連結構造31によって連結する際には、係合部32と係合受け部33との互いの接触面に接着剤を塗布して行い、接着剤による接着力で、各分割片23a,23b相互の連結部の結合強度を強化する。保持器材料が熱可塑性樹脂の場合には、加熱溶着により各分割片23a,23b相互の連結部の結合強度を強化することもできる。   Moreover, in this Embodiment, when connecting a pair of division | segmentation piece 23a, 23b with the connection structure 31, an adhesive agent is apply | coated to the mutual contact surface of the engaging part 32 and the engagement receiving part 33. FIG. And strengthening the bonding strength of the connecting portions of the divided pieces 23a and 23b with the adhesive force of the adhesive. When the cage material is a thermoplastic resin, it is possible to reinforce the bonding strength of the connecting portions between the divided pieces 23a and 23b by heat welding.

以上に説明した本実施の形態の樹脂製保持器23は、樹脂製としたことで従来の金属製のものよりも軽量化することが可能になり、省エネルギー化に必要な軽量化を実現できる。
また、周方向に2つの分割片23a,23bに分割されているため、各分割片23a,23bを円錐ころ軸受21の内輪3の外周で連結一体化することにより、内輪3の小鍔3aの外径Dが保持器23の小径側内径dよりも大きくなる場合でも内輪3への組付けが容易にできる。
Since the resin-made cage 23 of the present embodiment described above is made of resin, it can be made lighter than a conventional metal-made one, and light weight necessary for energy saving can be realized.
Moreover, since it is divided into two divided pieces 23 a and 23 b in the circumferential direction, the divided pieces 23 a and 23 b are connected and integrated on the outer circumference of the inner ring 3 of the tapered roller bearing 21, so that the small collar 3 a of the inner ring 3 is connected. Even when the outer diameter D is larger than the inner diameter d of the cage 23 on the small diameter side, the assembly to the inner ring 3 can be facilitated.

また本実施の形態の樹脂製保持器23では、保持器を構成する各分割片23a,23bは、隣接する物同士で、係合部32と係合受け部33とを係合させることで、円錐ころ軸受21の内輪3の外周で簡単に連結一体化することができる。   Further, in the resin cage 23 of the present embodiment, the divided pieces 23a and 23b constituting the cage are engaged with each other by engaging the engagement portion 32 and the engagement receiving portion 33 with each other. The tapered roller bearing 21 can be easily connected and integrated on the outer periphery of the inner ring 3.

更に、本実施の形態の樹脂製保持器23では、各分割片23a,23bの連結部は、連結構造31を構成している係合部32及び係合受け部33の係合による結合力の他に、接着剤による接合力が加わり、高い連結強度を得ることができる。保持器材料が熱可塑性樹脂の場合には、加熱溶着により各分割片23a,23b相互の連結部の結合強度を強化することもできる。   Furthermore, in the resin cage 23 of the present embodiment, the connecting portions of the divided pieces 23 a and 23 b have a coupling force due to the engagement of the engaging portions 32 and the engaging receiving portions 33 constituting the connecting structure 31. In addition, the joining force by the adhesive is added, and high connection strength can be obtained. When the cage material is a thermoplastic resin, it is possible to reinforce the bonding strength of the connecting portions between the divided pieces 23a and 23b by heat welding.

そして、以上のように本実施の形態の樹脂製保持器23を使用した円錐ころ軸受21では、図1に示したように内輪3の小鍔3aの外径Dが保持器23の小径側内径dよりも大きく設定されている場合でも内輪3への樹脂製保持器23の組付けが容易にでき、装置内の潤滑油が軸受内部の潤滑にも利用される環境で使用される場合でも、内輪3の小鍔3aの外径の大径化により軸受内への潤滑油の過剰流入を防止して、円錐ころ軸受21の撹拌抵抗の低減を達成することができる。   As described above, in the tapered roller bearing 21 using the resin cage 23 of the present embodiment, the outer diameter D of the small flange 3a of the inner ring 3 is smaller than the inner diameter of the cage 23 as shown in FIG. Even when it is set larger than d, the assembly of the resin cage 23 to the inner ring 3 can be facilitated, and even when used in an environment where the lubricating oil in the apparatus is also used for lubrication inside the bearing, By increasing the outer diameter of the small collar 3a of the inner ring 3, excessive inflow of lubricating oil into the bearing can be prevented, and a reduction in the stirring resistance of the tapered roller bearing 21 can be achieved.

図5は本発明に係る樹脂製保持器の第2の実施の形態の斜視図である。
この第2の実施の形態の樹脂製保持器41は、周方向に連結された2つの分割片23a,23bから構成され、各分割片23a,23bには隣接される分割片との連結を果たす連結構造31が設けられている点は、第1の実施の形態と共通である。また、連結構造31も第1の実施の形態と共通の係合構造となっている。これらの共通の構造は、第1の実施の形態と共通の番号を付すことにより、説明を省略する。
FIG. 5 is a perspective view of a second embodiment of the resin cage according to the present invention.
The resin cage 41 of the second embodiment is composed of two divided pieces 23a, 23b connected in the circumferential direction, and each divided piece 23a, 23b is connected to an adjacent divided piece. The connection structure 31 is provided in common with the first embodiment. Further, the connection structure 31 also has a common engagement structure with the first embodiment. These common structures are denoted by the same reference numerals as those in the first embodiment, and description thereof is omitted.

本実施の形態の樹脂製保持器41が第1の実施の形態と異なる点は、各分割片23a,23bにおいてポケット13を区画する柱部26に、ポケット13に嵌合する円錐ころ9の外周面を保持する爪43を設けた点である。
このように爪43を設けた構成とすることで、各分割片23a,23bを内輪3の外周で連結・一体化する際に、ポケット13から円錐ころ9が脱落することを防止して、各分割片23a,23bの内輪3への組み付け作業を容易にすることができる。
The resin cage 41 of the present embodiment is different from that of the first embodiment in that the outer periphery of the tapered roller 9 that fits in the pocket 13 is formed on the pillar portion 26 that defines the pocket 13 in each of the divided pieces 23a and 23b. This is the point that a claw 43 for holding the surface is provided.
By adopting the configuration in which the claw 43 is provided in this way, when the divided pieces 23a and 23b are connected and integrated on the outer periphery of the inner ring 3, the tapered roller 9 is prevented from dropping from the pocket 13, Assembling work of the split pieces 23a, 23b to the inner ring 3 can be facilitated.

なお、本発明に係る樹脂製保持器において、分割片相互を周方向に連結する連結構造の具体的な構造は、上記実施の形態に限らない。
以下に、分割片相互を周方向に連結する連結構造を改良した実施の形態を、順に説明する。なお、以下に示す各実施の形態においても、第1の実施の形態と同様に、分割片相互の連結部には接着剤を塗布して、連結構造における連結強度を補強することが望ましい。保持器材料が熱可塑性樹脂の場合には、加熱溶着により各分割片23a,23b相互の連結部の結合強度を強化することもできる。
In the resin cage according to the present invention, the specific structure of the connecting structure that connects the divided pieces in the circumferential direction is not limited to the above embodiment.
Below, the embodiment which improved the connection structure which connects division pieces in the peripheral direction is described in order. In each of the embodiments described below, it is desirable to reinforce the connection strength in the connection structure by applying an adhesive to the connection part between the divided pieces, as in the first embodiment. When the cage material is a thermoplastic resin, it is possible to reinforce the bonding strength of the connecting portions between the divided pieces 23a and 23b by heat welding.

図6は本発明に係る樹脂製保持器の第3の実施の形態の斜視図であり、図7は図6に示した樹脂製保持器における連結構造の拡大斜視図である。
この第3の実施の形態における樹脂製保持器45は、第1の実施の形態の連結構造31の代わりに、連結構造47を採用したもので、連結構造47以外の構成は第1の実施の形態と共通で良く、共通の構成には同番号を付して説明を省略する。
6 is a perspective view of a third embodiment of the resin cage according to the present invention, and FIG. 7 is an enlarged perspective view of a connection structure in the resin cage shown in FIG.
The resin cage 45 in the third embodiment employs a connection structure 47 instead of the connection structure 31 of the first embodiment, and the configuration other than the connection structure 47 is the same as that of the first embodiment. The configuration may be the same, and the same components are denoted by the same reference numerals and description thereof is omitted.

連結構造47は、図7に示すように、隣接する分割片23a,23b相互の周方向に突き合される互いの端縁において、一方の端縁に設けられた略T字形の凸片である係合部48と、他方の端縁に設けられて係合部48が係合する略T字形の切り欠きである係合受け部49とによる係合構造である。   As shown in FIG. 7, the connecting structure 47 is a substantially T-shaped convex piece provided at one end edge of the adjacent split pieces 23 a and 23 b that face each other in the circumferential direction. The engagement structure includes an engagement portion 48 and an engagement receiving portion 49 that is provided on the other end edge and engages with the engagement portion 48 and is a substantially T-shaped notch.

これらの連結構造47によって一対の分割片23a,23bを連結させる作業は、第1の実施の形態の場合と同様で、一方の分割片23bの周方向両端の係合部48と係合受け部49とを小径側リム片24b及び大径側リム片25bの弾性変形を利用して径方向外側に押し開き、それぞれの部位48,49を他方の分割片23aの周方向両端の対応する部位49,48の上に重ねる位置で元に戻すことで、隣接する係合部48と係合受け部49とを係合させて、分割片23aと分割片23bとを連結・一体化する。   The operation of connecting the pair of divided pieces 23a and 23b by these connecting structures 47 is the same as in the first embodiment, and the engaging portions 48 and the engaging receiving portions at both ends in the circumferential direction of the one divided piece 23b. 49 are pushed outward in the radial direction by utilizing the elastic deformation of the small-diameter side rim piece 24b and the large-diameter side rim piece 25b, and the respective parts 48, 49 are corresponding parts 49 at both ends in the circumferential direction of the other divided piece 23a. , 48, the adjacent engaging portion 48 and the engagement receiving portion 49 are engaged, and the divided piece 23a and the divided piece 23b are connected and integrated.

この第3の実施の形態の連結構造47では、略T字形の係合部48と係合受け部49との係合により、図7に矢印Eで示す内輪小鍔3a方向、及び、図7に矢印Fで示す内輪大鍔3b方向との双方向に位置規制を行うことができ、第1の実施の形態の連結構造31よりも連結部における位置決め精度を高めることが可能になる。   In the connection structure 47 of the third embodiment, the inner ring gavel 3a direction indicated by the arrow E in FIG. Therefore, it is possible to restrict the position in both directions with respect to the direction of the inner ring large collar 3b indicated by the arrow F in FIG.

図8は本発明に係る樹脂製保持器の第4の実施の形態の斜視図、図9(a)は図8に示した樹脂製保持器における連結構造の拡大正面図、図9(b)は同側面図、図10は図8に示した樹脂製保持器の分割片相互を連結状態にする操作の説明図である。   FIG. 8 is a perspective view of a resin cage according to a fourth embodiment of the present invention, FIG. 9A is an enlarged front view of a connection structure in the resin cage shown in FIG. 8, and FIG. FIG. 10 is an explanatory view of an operation of bringing the divided pieces of the resin cage shown in FIG. 8 into a connected state.

この第4の実施の形態における樹脂製保持器51は、第1の実施の形態の連結構造31の代わりに、連結構造53を採用したもので、連結構造53以外の構成は第1の実施の形態と共通で良く、共通の構成には同番号を付して説明を省略する。   The resin-made cage 51 in the fourth embodiment employs a connection structure 53 instead of the connection structure 31 of the first embodiment, and the configuration other than the connection structure 53 is the same as that of the first embodiment. The configuration may be the same, and the same components are denoted by the same reference numerals and description thereof is omitted.

本実施の形態の連結構造53は、一方の分割片23bの周方向の両端に設けられた係合部55と、他方の分割片23aの両端に設けられて係合部55が係合する係合受け部56と、による係合構造である。
係合部55は、図9(a),(b)に示すように、分割片23bの周方向の両端から周方向に延出して設けられた重ね合わせ用の板部55aの内面に、径方向内方に向けて係合突起55bを突設した構造になっている。
そして、係合受け部56は、図9(a),(b)に示すように、前述の板部55aに重ね合わせできるように分割片23aの周方向の両端から周方向に延出して設けられた重ね合わせ用の板部56aに、板部55a上の係合突起55bが嵌合する嵌合孔56bを設けたものである。
In the connection structure 53 of the present embodiment, the engaging portions 55 provided at both ends in the circumferential direction of one divided piece 23b and the engaging portions 55 provided at both ends of the other divided piece 23a are engaged. This is an engagement structure with the receiving portion 56.
As shown in FIGS. 9A and 9B, the engaging portion 55 has a diameter on the inner surface of the overlapping plate portion 55a provided extending in the circumferential direction from both ends in the circumferential direction of the split piece 23b. An engaging projection 55b is provided so as to project inward in the direction.
And as shown to Fig.9 (a), (b), the engagement receiving part 56 is extended and provided in the circumferential direction from the both ends of the circumferential direction of the division | segmentation piece 23a so that it can overlap with the above-mentioned board part 55a. The overlapped plate portion 56a is provided with a fitting hole 56b into which the engagement projection 55b on the plate portion 55a is fitted.

この第4の実施の形態における樹脂製保持器51の場合も、分割片23a,23b相互の連結方法は、先に説明した第1の実施の形態の場合と同様である。
即ち、図10(a)の矢印G,Hに示すように、一方の分割片23bの周方向両端の係合部55を小径側リム片24b及び大径側リム片25bの弾性変形を利用して径方向外側に押し開き、それぞれの部位55を図10(b)に矢印I,Jで示すように、他方の分割片23aの周方向両端の係合受け部56の上に重ねる位置で元に戻すことで、隣接する係合部55と係合受け部56とを係合させて、分割片23aと分割片23bとを連結・一体化する。
Also in the case of the resin cage 51 in the fourth embodiment, the method for connecting the divided pieces 23a and 23b is the same as that in the first embodiment described above.
That is, as shown by arrows G and H in FIG. 10 (a), the engagement portions 55 at both ends in the circumferential direction of one divided piece 23b are utilized by elastic deformation of the small diameter side rim piece 24b and the large diameter side rim piece 25b. As shown by arrows I and J in FIG. 10B, the respective portions 55 are pushed open outward in the radial direction, and are overlapped on the engagement receiving portions 56 at both ends in the circumferential direction of the other divided piece 23a. By returning to the position, the adjacent engaging portion 55 and the engagement receiving portion 56 are engaged, and the divided piece 23a and the divided piece 23b are connected and integrated.

図11は本発明に係る樹脂製保持器の第5の実施の形態の斜視図、図12は図11に示した樹脂製保持器の分解斜視図、図13は図12に示した分割片相互を連結する連結構造の拡大斜視図である。   11 is a perspective view of a resin cage according to a fifth embodiment of the present invention, FIG. 12 is an exploded perspective view of the resin cage shown in FIG. 11, and FIG. It is an expansion perspective view of the connection structure which connects.

この第5の実施の形態における樹脂製保持器57は、第1の実施の形態の連結構造31の代わりに、連結構造58を採用したもので、連結構造58以外の構成は第1の実施の形態と共通で良く、共通の構成には同番号を付して説明を省略する。   The resin cage 57 in the fifth embodiment employs a connecting structure 58 instead of the connecting structure 31 of the first embodiment, and the configuration other than the connecting structure 58 is the same as that of the first embodiment. The configuration may be common, and the same number is assigned to the common configuration, and the description is omitted.

本実施の形態の連結構造58は、隣接する分割片23a,23b相互の周方向に突き合される互いの端縁において、一方の端縁に設けられた係合部61と、他方の端縁に設けられて係合部61が係合する係合受け部63と、による係合構造である。   The connection structure 58 of the present embodiment includes an engaging portion 61 provided on one end edge and an end edge on the other end that are abutted in the circumferential direction between the adjacent divided pieces 23a and 23b. And an engagement receiving portion 63 with which the engagement portion 61 is engaged.

係合部61は、図13に示すように、各分割片23a,23bの一方の周方向端に位置する小径側リム片24a,24b及び大径側リム片25a,25bの端面に、周方向に突出して設けられた複数本の連結ピン61aから構成されている。
一方、係合受け部63は、連結ピン61aが緊密嵌合する複数個の連結孔63aである。係合受け部63となる複数個の連結孔63aは、図13に示すように、各分割片23a,23bの他方の周方向端に位置する小径側リム片24a,24b及び大径側リム片25a,25bの端面に形成されている。
As shown in FIG. 13, the engaging portion 61 is formed on the end surfaces of the small-diameter side rim pieces 24a and 24b and the large-diameter side rim pieces 25a and 25b located at one circumferential end of each of the divided pieces 23a and 23b in the circumferential direction. It is comprised from the several connection pin 61a provided protruding in the.
On the other hand, the engagement receiving portion 63 is a plurality of connection holes 63a into which the connection pins 61a are closely fitted. As shown in FIG. 13, the plurality of connecting holes 63a serving as the engagement receiving parts 63 are provided with the small-diameter side rim pieces 24a and 24b and the large-diameter side rim pieces located at the other circumferential ends of the divided pieces 23a and 23b. It is formed on the end faces of 25a and 25b.

第1乃至第4の実施の形態における連結構造31,47,53の場合は、いずれも、連結構造の装備域が、各分割片23a,23bの周方向端縁において、軸方向の略全域に渡るため、連結構造の周方向の長さが大きくなると、該連結構造を挟んで隣接するポケット13間の間隔が大きくなり、該連結構造部位で円錐ころ9の配列ピッチが変わるという問題が起こる。
しかし、上記第5の実施の形態のように、連結構造58の装備域が、各分割片23a,23bの周方向端縁において、各リム片の端面の範囲内に収まっていると、該連結構造58を挟んで隣接するポケット13,13間の間隔は、その他のポケット13,13間の間隔と同一に揃えることが可能になり、内輪外周の全周に渡って、円錐ころ9の配列ピッチを均等にすることができ、軸受性能の向上を図ることができる。
In the case of the connection structures 31, 47, and 53 in the first to fourth embodiments, the connection area of the connection structure is almost the entire area in the axial direction at the circumferential edges of the divided pieces 23a and 23b. Therefore, when the circumferential length of the connecting structure is increased, the interval between the pockets 13 adjacent to each other with the connecting structure is increased, and the arrangement pitch of the tapered rollers 9 is changed at the connecting structure portion.
However, as in the fifth embodiment, the connection area of the connection structure 58 is within the range of the end face of each rim piece at the circumferential edge of each divided piece 23a, 23b. The spacing between the adjacent pockets 13 and 13 across the structure 58 can be made equal to the spacing between the other pockets 13 and 13, and the arrangement pitch of the tapered rollers 9 over the entire circumference of the inner ring outer periphery. Can be made uniform, and the bearing performance can be improved.

図14は本発明に係る樹脂製保持器の第6の実施の形態の小径側リム部の正面図、図15は図14に示した小径側リム部のK−K断面図である。   FIG. 14 is a front view of a small-diameter side rim portion of the sixth embodiment of the resin cage according to the present invention, and FIG. 15 is a KK sectional view of the small-diameter side rim portion shown in FIG.

この第6の実施の形態の樹脂製保持器は、2つの分割片23a,23b相互を連結する連結構造65が、保持器の小径側リム部24を構成する小径側リム片24aと小径側リム片24bに形成した連結用溝67a,67bと、1本の環状の結束輪68とから構成される。
連結用溝67a,67bは、小径側リム片24aと小径側リム片24bとのそれぞれの端面に周方向に沿って形成された矩形断面の溝で、複数個の分割片23a,23bを周方向に並べたときに周方向に連なる環状溝67となる。
結束輪68は、前記環状溝67に嵌合されて複数個の分割片23a,23bを一括する環状体である。即ち、連結構造65は、環状溝67と、1本の環状の結束輪68とによる結束構造である。
In the resin cage according to the sixth embodiment, the connecting structure 65 that connects the two divided pieces 23a and 23b to each other includes a small-diameter rim piece 24a and a small-diameter-side rim constituting the small-diameter-side rim portion 24 of the cage. It is composed of connecting grooves 67a and 67b formed in the piece 24b, and one annular binding ring 68.
The connecting grooves 67a and 67b are grooves having a rectangular cross section formed along the circumferential direction on the respective end surfaces of the small-diameter side rim piece 24a and the small-diameter side rim piece 24b, and the plurality of divided pieces 23a and 23b are arranged in the circumferential direction. It becomes the annular groove 67 which continues in the circumferential direction when arranged in a row.
The binding ring 68 is an annular body that is fitted into the annular groove 67 and collects the plurality of divided pieces 23a and 23b. That is, the connecting structure 65 is a binding structure formed by an annular groove 67 and one annular binding ring 68.

この第6の実施の形態の場合、結束輪68は、図15に示すように、矩形断面の連結用溝67a,67bに嵌合する矩形断面の嵌合部68aと、該嵌合部68aの基端から延出して小径側リム片24a,24bの端面に面接触するフランジ部68bとで、断面形状が略T字状になっている。しかし、結束輪68の具体的な断面形状は、図15に示した形状に限らない。図16や図17に示すように、断面形状が円形の結束輪68を採用することも可能である。   In the case of the sixth embodiment, as shown in FIG. 15, the binding ring 68 includes a rectangular cross-section fitting portion 68a that fits in the rectangular cross-section connecting grooves 67a and 67b, and the fitting portion 68a. The flange portion 68b extending from the base end and in surface contact with the end surfaces of the small-diameter side rim pieces 24a, 24b has a substantially T-shaped cross section. However, the specific cross-sectional shape of the binding ring 68 is not limited to the shape shown in FIG. As shown in FIGS. 16 and 17, it is also possible to employ a binding ring 68 having a circular cross-sectional shape.

更に、連結用溝67a,67bの断面形状も矩形に限らない。例えば、図17に示したように、外径側を開放した段差構造にすることもできる。   Furthermore, the cross-sectional shape of the connecting grooves 67a and 67b is not limited to a rectangle. For example, as shown in FIG. 17, a stepped structure with the outer diameter side opened may be used.

以上に説明した連結構造65は、樹脂製保持器23の小径側リム部24の代わりに、大径側リム部25に装備したり、あるいは、小径側リム部24と大径側リム部25の双方に装備するようにしても良い。   The connecting structure 65 described above is installed in the large-diameter side rim portion 25 instead of the small-diameter side rim portion 24 of the resin cage 23, or the small-diameter side rim portion 24 and the large-diameter side rim portion 25 are connected. You may make it equip both sides.

この第6の実施の形態の連結構造65は、分割片23a,23b相互の突き合わせ端面の接着剤による接着と合わせて利用すると良い。保持器材料が熱可塑性樹脂の場合には、加熱溶着により各分割片23a,23b相互の連結部の結合強度を強化することもできる。   The connection structure 65 of the sixth embodiment may be used in combination with the bonding of the butt end surfaces of the divided pieces 23a and 23b with an adhesive. When the cage material is a thermoplastic resin, it is possible to reinforce the bonding strength of the connecting portions between the divided pieces 23a and 23b by heat welding.

この第6の実施の形態の連結構造65を採用する保持器では、当該保持器を構成する各分割片23a,23bは、円錐ころ軸受21の内輪3の外周に環状に並べて、小径側リム部24又は大径側リム部25の連結用溝67a,67bにより構築された環状溝67に結束輪68を嵌合させることで、円錐ころ軸受21の内輪3の外周で簡単に連結一体化することができる。   In the cage employing the connection structure 65 of the sixth embodiment, the divided pieces 23a and 23b constituting the cage are arranged on the outer periphery of the inner ring 3 of the tapered roller bearing 21 in an annular manner, and the small-diameter side rim portion is arranged. 24 or the bundling ring 68 is fitted into the annular groove 67 constructed by the coupling grooves 67a and 67b of the large-diameter side rim portion 25, so that the outer circumference of the inner ring 3 of the tapered roller bearing 21 can be easily connected and integrated. Can do.

なお、本発明に係る樹脂製保持器は、第1乃至第5の実施の形態に示した係合構造による連結構造31,47,53,58のいずれか一つに、第6の実施の形態に示した結束構造による連結構造65を組み合わせて装備するようにしても良い。   The resin cage according to the present invention is the sixth embodiment in any one of the connection structures 31, 47, 53, 58 by the engagement structure shown in the first to fifth embodiments. You may make it equip with combining the connection structure 65 by the bundling structure shown in (4).

このように、分割片23a,23b相互の連結構造として、結合構造による連結構造と、結束構造による連結構造との双方を採用することにより、保持器を構成する各分割片23a,23b相互の連結強度が向上し、円錐ころ軸受の高速化に必要となる保持器の強度アップを図ることができる。
また、結合構造による連結構造と、結束構造による連結構造との組み合わせに、更に接着剤による結合を行うことで、更に連結強度を向上させることができる。保持器材料が熱可塑性樹脂の場合には、加熱溶着により各分割片23a,23b相互の連結部の結合強度を強化することもできる。
As described above, by adopting both a connection structure based on a coupling structure and a connection structure based on a bundling structure as a connection structure between the divided pieces 23a and 23b, the mutual connection between the divided pieces 23a and 23b constituting the cage is achieved. The strength is improved, and the strength of the cage required for speeding up the tapered roller bearing can be increased.
Further, the connection strength can be further improved by further combining the connection structure with the connection structure and the connection structure with the bundling structure with an adhesive. When the cage material is a thermoplastic resin, it is possible to reinforce the bonding strength of the connecting portions between the divided pieces 23a and 23b by heat welding.

なお、本発明に係る樹脂製保持器の周方向の分割数は、上記実施の形態に示した2つに限らない。分割数は、3つ以上の適宜数に設定することが可能であるが、分割数が少なければ、保持器の組み立てを容易にすることができる。   In addition, the division | segmentation number of the circumferential direction of the resin cage which concerns on this invention is not restricted to two shown in the said embodiment. The number of divisions can be set to an appropriate number of three or more. However, if the number of divisions is small, assembly of the cage can be facilitated.

本発明に係る樹脂製保持器を使用した円錐ころ軸受の第1の実施の形態の要部の縦断面図である。It is a longitudinal cross-sectional view of the principal part of 1st Embodiment of the tapered roller bearing which uses the resin cage which concerns on this invention. 図1に示した樹脂製保持器の斜視図である。It is a perspective view of the resin-made cage shown in FIG. 図2に示した樹脂製保持器の分解斜視図である。FIG. 3 is an exploded perspective view of the resin cage shown in FIG. 2. 図3に示した樹脂製保持器の分割片相互を連結状態にする操作の説明図である。It is explanatory drawing of operation which makes the division piece of the resin cage shown in FIG. 3 a connection state. 本発明に係る樹脂製保持器の第2の実施の形態の斜視図である。It is a perspective view of 2nd Embodiment of the resin cage which concerns on this invention. 本発明に係る樹脂製保持器の第3の実施の形態の斜視図である。It is a perspective view of 3rd Embodiment of the resin cage which concerns on this invention. 図6に示した樹脂製保持器における連結構造の拡大斜視図である。It is an expansion perspective view of the connection structure in the resin cage shown in FIG. 本発明に係る樹脂製保持器の第4の実施の形態の斜視図である。It is a perspective view of 4th Embodiment of the resin cage concerning this invention. (a)は図8に示した樹脂製保持器における連結構造の拡大正面図、(b)は同側面図である。(A) is an enlarged front view of the connection structure in the resin cage shown in FIG. 8, and (b) is a side view of the same. 図8に示した樹脂製保持器の分割片相互を連結状態にする操作の説明図である。It is explanatory drawing of operation which makes the division pieces of a resin cage shown in FIG. 8 a connection state. 本発明に係る樹脂製保持器の第5の実施の形態の斜視図である。It is a perspective view of 5th Embodiment of the resin cage which concerns on this invention. 図11に示した樹脂製保持器の分解斜視図である。It is a disassembled perspective view of the resin cage shown in FIG. 図12に示した分割片相互を連結する連結構造の拡大斜視図である。It is an expansion perspective view of the connection structure which connects the division pieces shown in FIG. 本発明に係る樹脂製保持器の第6の実施の形態の小径側リム部の正面図である。It is a front view of the small diameter side rim | limb part of 6th Embodiment of the resin cage which concerns on this invention. 図14に示した小径側リム部のK−K断面図である。It is KK sectional drawing of the small diameter side rim | limb part shown in FIG. 図15に示した連結構造の変形例の説明図である。It is explanatory drawing of the modification of the connection structure shown in FIG. 図15に示した連結構造の更に別の変形例の説明図である。It is explanatory drawing of another modification of the connection structure shown in FIG.

符号の説明Explanation of symbols

3 内輪
3a 内輪小鍔
3b 内輪大鍔
4 円錐形軌道面
5 ハウジング
6 外輪
7 円錐形軌道面
13 ポケット
21 円錐ころ軸受
23 樹脂製保持器
23a,23b 分割片
24 小径側リム部
24a,24b 小径側リム片
25 大径側リム部
25a,25b 大径側リム片
26 柱部
31 連結構造
32 係合部
32a 突片
32b 係合受け溝
33 係合受け部
33a 突片
33b 係合受け溝
41 樹脂製保持器
43 爪
45 樹脂製保持器
47 連結構造
48 係合部
49 係合受け部
51 樹脂製保持器
53 連結構造
55 係合部
55a 重ね合わせ用の板部
55b 係合突起
56 係合受け部
56a 重ね合わせ用の板部
56b 嵌合孔
57 樹脂製保持器
58 連結構造
61 係合部
61a 連結ピン
63 係合受け部
63a 連結孔
65 連結構造
67 環状溝
67a,67b 連結用溝
68 結束輪
3 Inner ring 3a Inner ring small rod 3b Inner ring large rod 4 Conical raceway surface 5 Housing 6 Outer ring 7 Conical raceway surface 13 Pocket 21 Tapered roller bearing 23 Resin cage 23a, 23b Split piece 24 Small diameter side rim portion 24a, 24b Small diameter side Rim piece 25 Large-diameter rim portion 25a, 25b Large-diameter rim piece 26 Column 31 Connection structure 32 Engagement portion 32a Projection piece 32b Engagement reception groove 33 Engagement reception portion 33a Protrusion piece 33b Engagement reception groove 41 Made of resin Retainer 43 Claw 45 Resin retainer 47 Connection structure 48 Engagement part 49 Engagement receiving part 51 Resin retainer 53 Connection structure 55 Engagement part 55a Stacking plate part 55b Engagement projection 56 Engagement reception part 56a Overlapping plate part 56b Fitting hole 57 Resin cage 58 Connecting structure 61 Engaging part 61a Connecting pin 63 Engaging receiving part 63a Connecting hole 65 Connecting structure 67 the annular groove 67a, groove 68 tying wheel 67b connected

Claims (5)

円錐ころ軸受の内輪小鍔側で内外輪間を周回する円環状に形成された小径側リム部と、内輪大鍔側で内外輪間を周回する円環状に形成された大径側リム部と、これらの一対のリム部間に軸方向に橋渡しされる複数本の柱部とを備え、隣接する柱部間が内外輪間に装着される円錐ころを転動自在に保持するポケットとなる円錐ころ軸受の樹脂製保持器であって、
周方向に連結された複数個の分割片により構成され、各分割片には、隣接する分割片との連結を果たす連結構造を設けたことを特徴とする樹脂製保持器。
A small-diameter side rim portion formed between the inner and outer rings on the inner ring small side of the tapered roller bearing, and a large-diameter side rim portion formed between the inner and outer rings on the inner ring large flange side. And a plurality of pillars that are bridged in the axial direction between the pair of rim parts, and a cone that serves as a pocket that holds the tapered rollers that are mounted between the inner and outer rings between the adjacent pillars so as to roll freely. A resin cage for roller bearings,
A resin retainer comprising a plurality of divided pieces connected in the circumferential direction, and each divided piece is provided with a connecting structure for connecting to an adjacent divided piece.
前記連結構造が、隣接する分割片相互の周方向に突き合される互いの端縁において、一方の端縁に設けられた係合部と、他方の端縁に設けられて前記係合部が係合する係合受け部と、による係合構造であることを特徴とする請求項1に記載の樹脂製保持器。   The connecting structure has an engaging portion provided at one end edge and an engaging portion provided at the other end at the end edges of the adjacent divided pieces that are butted in the circumferential direction. The resin retainer according to claim 1, wherein the retainer is an engagement structure that engages with an engagement receiving portion. 前記連結構造が、各分割片の前記小径側リム部又は大径側リム部を構成する相当部位に周方向に沿って形成されて、複数個の分割片を周方向に並べたときに周方向に連なる環状溝となる連結用溝と、前記環状溝に嵌合されて複数個の分割片を一括する結束輪とによる結束構造であることを特徴とする請求項1に記載の樹脂製保持器。   The connecting structure is formed along the circumferential direction in a corresponding portion constituting the small-diameter side rim portion or the large-diameter side rim portion of each divided piece, and when the plurality of divided pieces are arranged in the circumferential direction, the circumferential direction The resin cage according to claim 1, wherein the resin retainer has a bundling structure including a coupling groove serving as an annular groove continuous with a bundling ring that is fitted into the annular groove and collects a plurality of divided pieces. . 前記連結構造として、前記係合構造と、前記結束構造との双方が設けられたことを特徴とする請求項2又は3に記載の樹脂製保持器。   4. The resin cage according to claim 2, wherein both the engagement structure and the bundling structure are provided as the connection structure. 内外輪間に装備する複数個の円錐ころを転動自在に保持する保持器として、請求項1乃至4に記載の樹脂製保持器を使用したことを特徴とする円錐ころ軸受。   A tapered roller bearing using the resin cage according to any one of claims 1 to 4 as a cage for rotatably holding a plurality of tapered rollers provided between inner and outer rings.
JP2008034474A 2008-02-15 2008-02-15 Resin cage and tapered roller bearing Pending JP2009191990A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2008034474A JP2009191990A (en) 2008-02-15 2008-02-15 Resin cage and tapered roller bearing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2008034474A JP2009191990A (en) 2008-02-15 2008-02-15 Resin cage and tapered roller bearing

Publications (1)

Publication Number Publication Date
JP2009191990A true JP2009191990A (en) 2009-08-27

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JP2014211240A (en) * 2014-08-21 2014-11-13 Ntn株式会社 Split type cage of conical roller bearing
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ITUB20152816A1 (en) * 2015-08-03 2017-02-03 Skf Ab CAGE FOR A ROLLING BEARING AND ASSOCIATED ROLLING BEARING
KR101838705B1 (en) * 2015-12-14 2018-03-14 주식회사 베어링아트 Cage and tapered roller bearing using the same
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US9273725B2 (en) 2009-10-16 2016-03-01 Ntn Corporation Rolling bearing
WO2011046164A1 (en) * 2009-10-16 2011-04-21 Ntn株式会社 Rolling bearing
WO2011080961A1 (en) * 2009-12-29 2011-07-07 Ntn株式会社 Divided retainer for tapered roller bearing
JP2011137530A (en) * 2009-12-29 2011-07-14 Ntn Corp Split type retainer of tapered roller bearing
DE102014205817A1 (en) * 2014-03-28 2015-10-01 Aktiebolaget Skf Rolling bearing cage and method for mounting a rolling bearing cage
US10619671B2 (en) 2014-03-28 2020-04-14 Aktiebolaget Skf Roller bearing cage and method for mounting a roller bearing cage
JP2014211240A (en) * 2014-08-21 2014-11-13 Ntn株式会社 Split type cage of conical roller bearing
CN105605100A (en) * 2014-10-29 2016-05-25 斯凯孚公司 Crankshaft bearing or a connecting-rod bearing of an internal combustion engine or for a compressor
US9638250B2 (en) 2014-10-29 2017-05-02 Aktiebolaget Skf Cage for a crankshaft bearing or connecting-rod bearing of an internal combustion engine or of a compressor
EP3015727A1 (en) * 2014-10-29 2016-05-04 Aktiebolaget SKF Crankshaft or connecting rod bearing of a combustion engine or a compressor
CN105605100B (en) * 2014-10-29 2020-08-14 斯凯孚公司 Crankshaft bearing or connecting rod bearing for internal combustion engine or compressor
ITUB20152816A1 (en) * 2015-08-03 2017-02-03 Skf Ab CAGE FOR A ROLLING BEARING AND ASSOCIATED ROLLING BEARING
KR101838705B1 (en) * 2015-12-14 2018-03-14 주식회사 베어링아트 Cage and tapered roller bearing using the same
CN108567216A (en) * 2017-03-09 2018-09-25 戴森技术有限公司 hair care appliance
JP2018149286A (en) * 2017-03-09 2018-09-27 ダイソン テクノロジー リミテッド Haircare appliance
US10869529B2 (en) 2017-03-09 2020-12-22 Dyson Technology Limited Hand held appliance
US11033088B2 (en) 2017-10-19 2021-06-15 Dyson Technology Limited Haircare appliance
CN111536160A (en) * 2019-02-07 2020-08-14 斯凯孚公司 Bearing cage segment including weld material location
CN114055699A (en) * 2021-09-26 2022-02-18 山东博源精密机械有限公司 Split type bearing retainer forming equipment and forming method

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