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JP2013185625A - Resin retainer - Google Patents

Resin retainer Download PDF

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Publication number
JP2013185625A
JP2013185625A JP2012049948A JP2012049948A JP2013185625A JP 2013185625 A JP2013185625 A JP 2013185625A JP 2012049948 A JP2012049948 A JP 2012049948A JP 2012049948 A JP2012049948 A JP 2012049948A JP 2013185625 A JP2013185625 A JP 2013185625A
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Japan
Prior art keywords
pair
annular
cage
resin
parts
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Pending
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JP2012049948A
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Japanese (ja)
Inventor
Yutaka Watamoto
裕 綿本
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JTEKT Corp
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JTEKT Corp
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Priority to JP2012049948A priority Critical patent/JP2013185625A/en
Publication of JP2013185625A publication Critical patent/JP2013185625A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/46—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
    • F16C33/4611—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
    • 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
    • F16C2220/00—Shaping
    • F16C2220/02—Shaping by casting
    • F16C2220/04—Shaping by casting by injection-moulding

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a resin retainer configured to prevent an axially intermediate part of a column part from being expanded toward the outer diameter by a centrifugal force.SOLUTION: A resin retainer includes: a pair of circular parts 31, 32 spaced axially; and a plurality of column parts 33 axially connecting the pair of circular parts 31, 32 and spaced circumferentially. The resin retainer includes a pocket 34 formed for rotatably holding a roller 40 by the pair of circular parts 31, 32 and a pair of adjacent column parts 33. The pair of circular parts 31, 32 and the column parts 33 are integrated with each other with resin. A metal reinforcement member 35 is embedded in the column part 33 from one to the other of the pair of circular parts 31, 32.

Description

本発明は、ころを回転可能に保持する樹脂製保持器に関する。   The present invention relates to a resin cage that holds a roller rotatably.

円すいころ軸受は、内輪と、内輪の外周側に配置される外輪と、内輪よび外輪間を転動する円すいころと、複数の円すいころを円周方向に間隔を空けて回転可能に保持する保持器とを有する。   Tapered roller bearings hold an inner ring, an outer ring disposed on the outer periphery of the inner ring, a tapered roller that rolls between the inner ring and the outer ring, and a plurality of tapered rollers that are rotatably held at intervals in the circumferential direction. With a bowl.

保持器として、図６（特許文献１）に示すような樹脂製の保持器１００があり、このものは、大径側の円環部１０１と、小径側の円環部１０２と、大径側の円環部１０１および小径側の円環部１０２を連結する柱部１０３とからなっている。大径側の円環部１０１と、小径側の円環部１０２と、隣合う一対の柱部１０３とによってポケット１０５が形成され、ポケット１０５に円すいころ１１０が回転可能に保持されている。   As a cage, there is a resin cage 100 as shown in FIG. 6 (Patent Document 1), which includes a large-diameter side annular portion 101, a small-diameter side annular portion 102, and a large-diameter side. And the pillar part 103 which connects the annular part 101 and the annular part 102 on the small diameter side. A pocket 105 is formed by the large-diameter-side annular portion 101, the small-diameter-side annular portion 102, and a pair of adjacent pillars 103, and the tapered roller 110 is rotatably held in the pocket 105.

特許第４７５４４３１号公報Japanese Patent No. 4754431

径の大きい保持器１００を内輪とともに高速回転させると、柱部１０３の軸方向中間が遠心力によって外径側へ膨らむ。この結果、円すいころ１１０と柱部１０３との十分な接触が得られなくなり、円すいころ１１０に対する柱部１０３の局部摩耗が発生したり、円すいころ１１０のローリングが発生する可能性がある。本発明は上述した問題点を解決するためになされたもので、その目的は、柱部の軸方向の中間が遠心力によって外径側へ膨らむのを防止した樹脂製保持器を提供する。   When the cage 100 having a large diameter is rotated at a high speed together with the inner ring, the middle in the axial direction of the column portion 103 swells to the outer diameter side by centrifugal force. As a result, sufficient contact between the tapered roller 110 and the column portion 103 cannot be obtained, and local wear of the column portion 103 with respect to the tapered roller 110 may occur, or rolling of the tapered roller 110 may occur. The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a resin cage in which the axial middle of a column portion is prevented from bulging to the outer diameter side by centrifugal force.

請求項１に記載の発明は、軸方向に間隔を空けて配置されたリング状の一対の円環部と、一対の円環部を軸方向に連結するとともに円周方向に間隔を空けて複数配置された柱部とからなり、前記一対の円環部および隣合う一対の前記柱部によってころを回転可能に保持するポケットを形成し、前記一対の円環部および前記柱部を樹脂で一体形成した樹脂製保持器において、一対の円環部の一方から他方にかけて前記柱部に金属製の補強部材を埋設したことを特徴とするものである。   According to the first aspect of the present invention, a pair of ring-shaped annular portions arranged at intervals in the axial direction, a plurality of annular portions connected in the axial direction and spaced apart in the circumferential direction. And a pair of adjacent annular portions and a pair of adjacent pillar portions to hold a roller rotatably, and the pair of annular portions and the pillar portions are integrated with resin. In the formed resin cage, a metal reinforcing member is embedded in the column portion from one to the other of the pair of annular portions.

本発明によれば、埋設された金属製の補強部材により、柱部の軸方向の中間が遠心力によって外径側へ膨らむのを防止できる。   According to the present invention, the embedded metal reinforcing member can prevent the middle of the column portion in the axial direction from bulging to the outer diameter side due to centrifugal force.

本発明の一実施形態における円すいころ軸受の断面図である。It is sectional drawing of the tapered roller bearing in one Embodiment of this invention. 本発明の一実施形態における図１のＡ−Ａ線拡大断面図である。It is an AA line expanded sectional view of Drawing 1 in one embodiment of the present invention. 本発明の一実施形態における図１のＢ−Ｂ線拡大断面図である。It is a BB line expanded sectional view of Drawing 1 in one embodiment of the present invention. 本発明の一実施形態における図１のＣ矢視図である。It is C arrow line view of FIG. 1 in one Embodiment of this invention. 本発明の一実施形態における樹脂製保持器の射出成形状態図である。It is an injection molding state figure of the resin cage in one embodiment of the present invention. 従来の円すいころ軸受用の樹脂製保持器の斜視図である。It is a perspective view of the resin cage for the conventional tapered roller bearing.

本発明の一実施形態について、図１乃至図５を参酌しつつ説明する。図１は、円すいころ軸受の断面図であり、図２は、図１のＡ−Ａ線拡大断面図であり、図３は、図１のＢ−Ｂ線拡大断面図であり、図４は、図１のＣ矢視図であり、図５は、樹脂製保持器の射出成形状態図である。   An embodiment of the present invention will be described with reference to FIGS. 1 is a sectional view of a tapered roller bearing, FIG. 2 is an enlarged sectional view taken along line AA in FIG. 1, FIG. 3 is an enlarged sectional view taken along line BB in FIG. 1, and FIG. FIG. 5 is a view taken in the direction of arrow C in FIG. 1, and FIG. 5 is an injection-molded state diagram of the resin cage.

図１乃至図４に示すように、円すいころ軸受１０は、リング状の外輪１１と、外輪１１の内周側に配置されるリング状の内輪２０と、外輪１１および内輪２０間に配置されるリング状の保持器３０と、保持器３０によって円周方向に間隔を空けて配置される複数の円すいころ４０とからなっている。外輪１１、内輪２０、円すいころ４０は、いずれも金属の材料で構成され、特に鉄系の材料がよく使われる。保持器３０は、樹脂の材料で構成され、特にエンジニアリングプラスチックがよく使われる。エンジニアリングプラスチックとして、例えばポリアミド６（ＰＡ６）、ポリアミド６６（ＰＡ６６）などがある。   As shown in FIGS. 1 to 4, the tapered roller bearing 10 is disposed between a ring-shaped outer ring 11, a ring-shaped inner ring 20 disposed on the inner peripheral side of the outer ring 11, and the outer ring 11 and the inner ring 20. It consists of a ring-shaped cage 30 and a plurality of tapered rollers 40 that are spaced apart in the circumferential direction by the cage 30. The outer ring 11, the inner ring 20, and the tapered roller 40 are all made of a metal material, and in particular, an iron-based material is often used. The cage 30 is made of a resin material, and in particular, engineering plastic is often used. Examples of the engineering plastic include polyamide 6 (PA6) and polyamide 66 (PA66).

図１に示すように、外輪１１の内周には、これの軸線に対して傾斜した外輪側軌道面１２が形成されている。内輪２０の外周には、これの軸線に対して傾斜した内輪側軌道面２２が形成されている。また内輪２０には、内輪側軌道面２２を挟んで小径側に外径方向へ突出した小径側鍔部２３が形成され、内輪側軌道面２２を挟んで大径側に外径方向へ突出した大径側鍔部２４が形成されている。大径側鍔部２４の円すいころ４０側の端面には、円すいころ４０の後述する大径側端面４３に接触する大径側内側端面２５が形成されている。   As shown in FIG. 1, an outer ring-side raceway surface 12 that is inclined with respect to the axis thereof is formed on the inner periphery of the outer ring 11. On the outer periphery of the inner ring 20, an inner ring side raceway surface 22 that is inclined with respect to the axis thereof is formed. Further, the inner ring 20 is formed with a small-diameter flange 23 projecting in the outer diameter direction on the small diameter side with the inner ring side raceway surface 22 interposed therebetween, and projecting in the outer diameter direction on the large diameter side with the inner ring side raceway surface 22 interposed therebetween. A large-diameter side flange 24 is formed. A large-diameter inner end surface 25 that contacts a later-described large-diameter side end surface 43 of the tapered roller 40 is formed on the end surface of the large-diameter flange 24 on the tapered roller 40 side.

保持器３０は、リング状の形状を有し、径方向においては外輪１１および内輪２０間に配置されている。図１および図４に示すように、保持器３０は、内輪２０の小径側鍔部２３と軸方向に同位置に配置された第１円環部３１と、内輪２０の大径側鍔部２４と軸方向に同位置に配置された第２円環部３２と、第１円環部３１および第２円環部３２を繋ぐ柱部３３とからなっている。保持器３０の円周方向に等間隔に柱部３３が配置され、円周方向に向い合う一対の柱部３３と、軸方向に向い合う第１円環部３１および第２円環部３２とによってポケット３４が形成されている。複数の円すいころ４０が、各ポケット３４に回転可能に保持されている。   The cage 30 has a ring shape and is disposed between the outer ring 11 and the inner ring 20 in the radial direction. As shown in FIGS. 1 and 4, the retainer 30 includes a first annular portion 31 that is disposed at the same position in the axial direction as the small-diameter side flange portion 23 of the inner ring 20, and a large-diameter side flange portion 24 of the inner ring 20. And a second annular part 32 disposed at the same position in the axial direction, and a column part 33 connecting the first annular part 31 and the second annular part 32. The pillars 33 are arranged at equal intervals in the circumferential direction of the cage 30, and a pair of pillars 33 facing the circumferential direction, a first annular part 31 and a second annular part 32 facing the axial direction, Thus, a pocket 34 is formed. A plurality of tapered rollers 40 are rotatably held in each pocket 34.

図１乃至図４に示すように、柱部３３は、内輪側軌道面２２と略同一の傾斜角度を有する第１柱部３３ａと、外輪側軌道面１２よりきつい傾斜角度を有する第２柱部３３ｂとからなっている。第１柱部３３ａの一端は、第１円環部３１に接続され、第２柱部３３ｂの他端は第２円環部３２に接続されている。ポケット３４には、円すいころ４０に接触する断面円弧状の案内面が形成され、この案内面は第１柱部３３ａに形成されている。すなわち、第２柱部３３ｂには、断面円弧状の案内面が形成されていない。   As shown in FIGS. 1 to 4, the column portion 33 includes a first column portion 33 a having substantially the same inclination angle as the inner ring side raceway surface 22, and a second column portion having a tighter inclination angle than the outer ring side raceway surface 12. 33b. One end of the first column portion 33 a is connected to the first annular portion 31, and the other end of the second column portion 33 b is connected to the second annular portion 32. In the pocket 34, a guide surface having an arcuate cross section that contacts the tapered roller 40 is formed, and this guide surface is formed in the first column portion 33a. That is, the second pillar portion 33b is not formed with a guide surface having an arcuate cross section.

柱部３３には、金属製の補強部材３５が埋設されている。補強部材３５の材質として、鉄系あるいは黄銅などが考えられ、曲げに対する弾性係数で見た場合、柱部３３の樹脂部分よりも大きい金属材料であれば該当する。補強部材３５は、断面円形で棒状の部材であり、第１柱部３３ａよりもきつい傾斜角度で、第２柱部３３ｂよりは緩い傾斜角度で配置されている。保持器３０の円周方向において、補強部材３５は柱部３３の中間に配置され、保持器３０の軸線方向において、補強部材３５は一端が第１円環部３１から、他端が第２円環部３２を貫通する位置まで配置されている。   A metal reinforcing member 35 is embedded in the column portion 33. As the material of the reinforcing member 35, iron or brass is conceivable, and when viewed from the elastic modulus against bending, any metal material larger than the resin portion of the column portion 33 is applicable. The reinforcing member 35 is a rod-like member having a circular cross section, and is disposed at an inclination angle tighter than that of the first column portion 33a and at an inclination angle looser than that of the second column portion 33b. In the circumferential direction of the cage 30, the reinforcing member 35 is disposed in the middle of the column portion 33. In the axial direction of the cage 30, one end of the reinforcing member 35 is from the first annular portion 31 and the other end is the second circle. It arrange | positions to the position which penetrates the ring part 32. FIG.

前記円すいころ４０は、円すい形状から頂部を除去した形状を有するもので、前記外輪側軌道面１２および前記内輪側軌道面２２上を転動する転動面４１と、小径側の端面に形成された小径側端面４２と、大径側の端面に形成された大径側端面４３とを有する。   The tapered roller 40 has a shape obtained by removing a top portion from a conical shape, and is formed on a rolling surface 41 that rolls on the outer ring side raceway surface 12 and the inner ring side raceway surface 22 and an end surface on the small diameter side. A small-diameter side end surface 42 and a large-diameter side end surface 43 formed on the large-diameter side end surface.

次に保持器３０の製造について説明する。まず製造装置について説明する。
保持器３０は射出成形によって作られる。射出成形には、図５に示すような射出成形金型５０が使用される。金型５０は、固定金型５１と、固定金型５１に対し進退する可動金型５５とからなり、固定金型５１に径方向に案内溝５２が形成され、これに挟持駒６０が案内されている。挟持駒６０は図略のシリンダ装置によって径方向に進退し、内径側へ移動したときは、固定金型５１とで金属製の補強部材３５を挟持するようになっている。 Next, the manufacture of the cage 30 will be described. First, the manufacturing apparatus will be described.
The cage 30 is made by injection molding. For injection molding, an injection mold 50 as shown in FIG. 5 is used. The mold 50 includes a fixed mold 51 and a movable mold 55 that moves forward and backward with respect to the fixed mold 51. A guide groove 52 is formed in the fixed mold 51 in the radial direction, and the holding piece 60 is guided to the guide groove 52. ing. When the holding piece 60 is advanced and retracted in the radial direction by a cylinder device (not shown) and moved to the inner diameter side, the metal reinforcing member 35 is held between the fixed mold 51 and the holding piece 60.

可動金型５５に径方向に案内穴５６が形成され、これに可動駒６５が案内されている。可動駒６５は図略のシリンダ装置によって径方向に進退し、内径側へ移動してポケット３４の空間を埋める役割を果たす。固定金型５１と、可動金型５５と、可動駒６５とで保持器３０を形成するための空間が形成され、この空間に通じるインジェクト通路５３が固定金型５１に形成されている。   A guide hole 56 is formed in the movable mold 55 in the radial direction, and the movable piece 65 is guided to the guide hole 56. The movable piece 65 advances and retreats in the radial direction by a cylinder device (not shown) and moves to the inner diameter side to fill the space of the pocket 34. A space for forming the cage 30 is formed by the fixed mold 51, the movable mold 55, and the movable piece 65, and an injection passage 53 leading to this space is formed in the fixed mold 51.

上述した製造装置を使って、製造順序を説明する。
補強部材３５を固定金型５１に配置し、挟持駒６０を内径側へ移動させ、固定金型５１および挟持駒６０で補強部材３５を挟持する。可動金型５５を固定金型５１側へ移動させ、可動駒６５を内径側へ移動させ、固定金型５１と、可動金型５５と、可動駒６５とで空間を形成する。溶融した樹脂をインジェクト通路５３を経て前記空間へ射出する。可動駒６５を外径側へ移動させ、挟持駒６０を外径側へ移動させ、可動金型５５を固定金型５１に対して離間させる。固定金型５１から保持器３０を取り出し、補強部材３５の第２円環部３２より突出している部分を切断機にて切断する。こうして保持器３０が完成する。 The manufacturing order will be described using the manufacturing apparatus described above.
The reinforcing member 35 is disposed on the fixed mold 51, the holding piece 60 is moved to the inner diameter side, and the reinforcing member 35 is held between the fixed mold 51 and the holding piece 60. The movable mold 55 is moved to the fixed mold 51 side, the movable piece 65 is moved to the inner diameter side, and the fixed mold 51, the movable mold 55, and the movable piece 65 form a space. The molten resin is injected into the space through the injection passage 53. The movable piece 65 is moved to the outer diameter side, the holding piece 60 is moved to the outer diameter side, and the movable mold 55 is separated from the fixed mold 51. The retainer 30 is taken out from the fixed mold 51, and the portion of the reinforcing member 35 that protrudes from the second annular portion 32 is cut by a cutting machine. Thus, the cage 30 is completed.

続いて上述した構成にもとづいて、組付け動作を図１を使用して説明する。
外輪１１よりも大きい内径を有する図略の組付け治具に保持器３０を遊嵌させ、保持器３０の内径側から円すいころ４０をポケット３４に挿入する。複数配置された円すいころ４０の内径側に内輪２０を挿入し、組付け治具から、保持器３０、内輪２０、円すいころ４０を抜き出し、複数配置された円すいころ４０の外径側へ外輪１１を嵌め込む。 Next, the assembling operation will be described with reference to FIG. 1 based on the configuration described above.
The retainer 30 is loosely fitted in an unillustrated assembly jig having an inner diameter larger than that of the outer ring 11, and the tapered roller 40 is inserted into the pocket 34 from the inner diameter side of the retainer 30. The inner ring 20 is inserted into the inner diameter side of the plurality of tapered rollers 40, the retainer 30, the inner ring 20, and the tapered rollers 40 are extracted from the assembly jig, and the outer ring 11 is moved to the outer diameter side of the plurality of tapered rollers 40. Fit.

こうして、外輪１１、内輪２０、保持器３０、円すいころ４０がバラバラにならないように一体化し、図略のハウジングに外輪１１が取り付けられ、内輪２０に図略の回転軸が嵌挿される。こうして、回転軸はハウジングに対し円すいころ軸受１０を介して軸承される。   In this way, the outer ring 11, the inner ring 20, the cage 30, and the tapered roller 40 are integrated so as not to fall apart, the outer ring 11 is attached to a housing (not shown), and a rotating shaft (not shown) is inserted into the inner ring 20. Thus, the rotating shaft is supported on the housing via the tapered roller bearing 10.

このようにして組付けられた回転軸および内輪２０を回転させると、円すいころ４０は外輪側軌道面１２および内輪側軌道面２２上を転動しながら内輪２０の回転方向と同方向へ移動する。円すいころ４０の転動によって保持器３０が内輪２０と同方向へ回転する。保持器３０を内輪２０とともに高速回転させても、柱部３３に補強部材３５が埋設されているので、柱部３３の軸方向の中間が外径側へ膨らむことが無い。よって、円すいころ４０と柱部３３との接触が維持され、円すいころ４０に対して柱部３３の異常摩耗を防ぐことが出来る。また円すいころ４０のローリングを防ぐことが出来る。   When the rotating shaft and the inner ring 20 assembled in this way are rotated, the tapered roller 40 moves in the same direction as the rotation direction of the inner ring 20 while rolling on the outer ring side raceway surface 12 and the inner ring side raceway surface 22. . The retainer 30 rotates in the same direction as the inner ring 20 by the rolling of the tapered roller 40. Even when the cage 30 is rotated at a high speed together with the inner ring 20, the reinforcing member 35 is embedded in the column portion 33, so that the axial middle of the column portion 33 does not bulge to the outer diameter side. Therefore, the contact between the tapered roller 40 and the column portion 33 is maintained, and abnormal wear of the column portion 33 with respect to the tapered roller 40 can be prevented. Further, rolling of the tapered roller 40 can be prevented.

本発明はこうした実施形態に何等限定されるものではなく、本発明の要旨を逸脱しない範囲において、種々なる態様で実施し得ることは勿論である。   The present invention is not limited to these embodiments, and can of course be implemented in various modes without departing from the gist of the present invention.

上述した実施形態は、ころとして円すいころを用いた例について述べた。他の実施形態として、ころとして円筒ころを用いても良い。即ち、円筒ころ軸受の保持器にも適用できる。 In the embodiment described above, an example in which a tapered roller is used as a roller has been described. As another embodiment, cylindrical rollers may be used as the rollers. That is, it can be applied to a cage of a cylindrical roller bearing.

上述した実施形態は、補強部材３５の他端を第２円環部３２を貫通する位置まで延ばし、補強部材３５の一端を第１円環部３１まで延ばした。他の実施形態として、補強部材３５の他端を第２円環部３２を貫通する位置まで延ばし、補強部材３５の一端を第１円環部３１付近の柱部３３まで延ばしても良い。さらに他の実施形態として、補強部材３５の他端を第２円環部３２付近の柱部３３まで延ばし、補強部材３５の一端を第１円環部３１を貫通する位置まで延ばしても良い。とにかく、補強部材３５の両端が柱部３３の根元近くまで延びていれば、柱部３３の軸方向中間の膨らみを抑えることが出来る。   In the embodiment described above, the other end of the reinforcing member 35 is extended to a position penetrating the second annular portion 32, and one end of the reinforcing member 35 is extended to the first annular portion 31. As another embodiment, the other end of the reinforcing member 35 may be extended to a position penetrating the second annular portion 32, and one end of the reinforcing member 35 may be extended to the column portion 33 near the first annular portion 31. As still another embodiment, the other end of the reinforcing member 35 may be extended to the column portion 33 near the second annular portion 32, and one end of the reinforcing member 35 may be extended to a position penetrating the first annular portion 31. Anyway, if both ends of the reinforcing member 35 extend to the vicinity of the base of the column portion 33, the bulge in the middle in the axial direction of the column portion 33 can be suppressed.

１１：外輪、２０：内輪、３０：保持器、３１：第１円環部（円環部）、３２：第２円環部（円環部）、３３：柱部、３４：ポケット、３５：補強部材、４０：円すいころ（ころ） 11: outer ring, 20: inner ring, 30: cage, 31: first annular part (annular part), 32: second annular part (annular part), 33: pillar part, 34: pocket, 35: Reinforcing member, 40: Tapered roller

Claims (1)

軸方向に間隔を空けて配置されたリング状の一対の円環部と、一対の円環部を軸方向に連結するとともに円周方向に間隔を空けて複数配置された柱部とからなり、前記一対の円環部および隣合う一対の前記柱部によってころを回転可能に保持するポケットを形成し、前記一対の円環部および前記柱部を樹脂で一体形成した樹脂製保持器において、一対の円環部の一方から他方にかけて前記柱部に金属製の補強部材を埋設したことを特徴とする樹脂製保持器。 It consists of a pair of ring-shaped annular parts arranged at intervals in the axial direction, and a plurality of column parts that are connected to the pair of annular parts in the axial direction and arranged at intervals in the circumferential direction, In the resin cage in which a pocket for rotatably holding a roller is formed by the pair of annular portions and the adjacent pair of pillar portions, and the pair of annular portions and the pillar portions are integrally formed of resin, A resin retainer, wherein a metal reinforcing member is embedded in the column portion from one to the other of the ring portions.
JP2012049948A 2012-03-07 2012-03-07 Resin retainer Pending JP2013185625A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018080769A (en) * 2016-11-17 2018-05-24 株式会社ジェイテクト Tapered roller bearing
WO2019065768A1 (en) * 2017-09-28 2019-04-04 Ntn株式会社 Retainer for tapered roller bearing, and tapered roller bearing

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018080769A (en) * 2016-11-17 2018-05-24 株式会社ジェイテクト Tapered roller bearing
WO2019065768A1 (en) * 2017-09-28 2019-04-04 Ntn株式会社 Retainer for tapered roller bearing, and tapered roller bearing
CN111133210A (en) * 2017-09-28 2020-05-08 Ntn株式会社 Retainer for tapered roller bearing and tapered roller bearing
CN111133210B (en) * 2017-09-28 2022-01-04 Ntn株式会社 Retainer for tapered roller bearing and tapered roller bearing

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