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JP2008115903A - Roller bearing cage and rolling bearing - Google Patents

Roller bearing cage and rolling bearing Download PDF

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Publication number
JP2008115903A
JP2008115903A JP2006297760A JP2006297760A JP2008115903A JP 2008115903 A JP2008115903 A JP 2008115903A JP 2006297760 A JP2006297760 A JP 2006297760A JP 2006297760 A JP2006297760 A JP 2006297760A JP 2008115903 A JP2008115903 A JP 2008115903A
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Japan
Prior art keywords
pair
cage
portions
rolling bearing
retainer
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Pending
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JP2006297760A
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Japanese (ja)
Inventor
Takeshi Maejima
武始 前島
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NSK Ltd
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NSK Ltd
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Priority to JP2006297760A priority Critical patent/JP2008115903A/en
Publication of JP2008115903A publication Critical patent/JP2008115903A/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
    • F16C33/38—Ball cages
    • F16C33/3837—Massive or moulded cages having cage pockets surrounding the balls, e.g. machined window cages
    • F16C33/3862—Massive or moulded cages having cage pockets surrounding the balls, e.g. machined window cages comprising two annular parts joined together
    • F16C33/3875—Massive or moulded cages having cage pockets surrounding the balls, e.g. machined window cages comprising two annular parts joined together made from plastic, e.g. two injection moulded parts joined by a snap fit
    • 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
    • F16C33/38—Ball cages
    • F16C33/3887—Details of individual pockets, e.g. shape or ball retaining means
    • 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
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
    • F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2208/00—Plastics; Synthetic resins, e.g. rubbers
    • F16C2208/20—Thermoplastic resins
    • F16C2208/58—Several materials as provided for in F16C2208/30 - F16C2208/54 mentioned as option
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2208/00—Plastics; Synthetic resins, e.g. rubbers
    • F16C2208/20—Thermoplastic resins
    • F16C2208/60—Polyamides [PA]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2208/00—Plastics; Synthetic resins, e.g. rubbers
    • F16C2208/20—Thermoplastic resins
    • F16C2208/70—Polyesters, e.g. polyethylene-terephthlate [PET], polybutylene-terephthlate [PBT]
    • 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
    • F16C2226/00—Joining parts; Fastening; Assembling or mounting parts
    • F16C2226/50—Positive connections
    • F16C2226/70—Positive connections with complementary interlocking parts
    • F16C2226/74—Positive connections with complementary interlocking parts with snap-fit, e.g. by clips

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

Abstract

【課題】高速回転時の保持器の捩れ変形を防止することができると共に、ガタつきによる保持器の分解を防止することができる転がり軸受用保持器及び転がり軸受を提供する。
【解決手段】
転がり軸受用保持器１４は、軸方向に分割された一対の保持器分割片１５ａ，１５ｂを備え、一対の保持器分割片１５ａ，１５ｂには、転動体１３を保持するための一対の爪部１８を形成した第１ポケット部１６が円周方向に複数配置され、一対の保持器分割片１５ａ，１５ｂの第１ポケット部１６間には、相手側の保持器分割片１５ｂ，１５ａの一対の爪部１８を嵌合させるための一対の溝部１９を形成した第２ポケット部１７が配置され、一対の爪部１８には、係合部１８ａが形成され、一対の溝部１９には、係合部１８ａと係合する被係合部１９ａが形成される。
【選択図】図２The present invention provides a rolling bearing cage and a rolling bearing that can prevent torsional deformation of the cage during high-speed rotation and can prevent the cage from being disassembled due to rattling.
[Solution]
The rolling bearing retainer 14 includes a pair of retainer split pieces 15a and 15b divided in the axial direction, and the pair of retainer split pieces 15a and 15b has a pair of claw portions for holding the rolling elements 13. A plurality of first pocket portions 16 each having a shape 18 are arranged in the circumferential direction, and a pair of retainer split pieces 15b, 15a on the other side is disposed between the first pocket portions 16 of the pair of retainer split pieces 15a, 15b. A second pocket portion 17 having a pair of groove portions 19 for fitting the claw portions 18 is disposed, an engagement portion 18a is formed on the pair of claw portions 18, and an engagement portion is formed on the pair of groove portions 19. An engaged portion 19a that engages with the portion 18a is formed.
[Selection] Figure 2

Description

本発明は、転がり軸受用保持器及びこの転がり軸受用保持器を組み込んだ転がり軸受に関し、特に、高速回転向けの転がり軸受用保持器及び転がり軸受に関する。   The present invention relates to a rolling bearing cage and a rolling bearing incorporating the rolling bearing cage, and more particularly to a rolling bearing cage and a rolling bearing for high-speed rotation.

従来の転がり軸受としては、図１５に示すような転がり軸受５０が知られており、この転がり軸受５０は、外輪１と内輪２との間に転動体である複数の玉５３が配設された深溝玉軸受であり、この複数の玉５３は、図１６に示すような円環状の冠型保持器５４を介して円周方向に略等間隔で転動可能に保持されている。   As a conventional rolling bearing, a rolling bearing 50 as shown in FIG. 15 is known. In this rolling bearing 50, a plurality of balls 53, which are rolling elements, are disposed between the outer ring 1 and the inner ring 2. This is a deep groove ball bearing, and the plurality of balls 53 are held so as to be able to roll at substantially equal intervals in the circumferential direction via an annular crown-shaped cage 54 as shown in FIG.

冠型保持器５４は、合成樹脂の射出成形等により形成されており、冠型保持器５４には、複数の玉５３を円周方向に略等間隔で転動可能に保持するポケット部５５が形成され、このポケット部５５の内周面の円周方向両端部には軸方向に突出する一対の爪部５６が設けられている。また、一対の爪部５６には、開口部５７が形成されており、この開口部５７から玉５３を一対の爪部５６を押し広げつつポケット部５５に押し込むことにより、ポケット部５５内に玉５３が微小な隙間を介して転動可能に保持される。   The crown-shaped cage 54 is formed by injection molding of synthetic resin or the like, and the crown-shaped cage 54 has a pocket portion 55 that holds a plurality of balls 53 so as to roll in a circumferential direction at substantially equal intervals. A pair of claw portions 56 protruding in the axial direction are provided at both ends in the circumferential direction of the inner peripheral surface of the pocket portion 55. An opening 57 is formed in the pair of claw portions 56, and the ball 53 is pushed into the pocket portion 55 while expanding the pair of claw portions 56 from the opening 57, thereby allowing the ball to enter the pocket portion 55. 53 is held so as to be able to roll through a minute gap.

また、高速回転用の転がり軸受用保持器として、図１８に示すように、軸方向に分割された一対の保持器分割片６１ａ，６１ｂを備えた転がり軸受用保持器６０が提案されている（例えば、特許文献１参照）。この一対の保持器分割片６１ａ，６１ｂには、例えば、鉄板にプレス加工を施すことにより、凹球面状のポケット形成部６２と、平坦状の柱形成部６３と、が円周方向に略等間隔で交互に形成される。また、一対の保持器分割片６１ａ，６１ｂの柱形成部６３には、係止突起６４と、相手側の保持器分割片６１ｂ，６１ａの係止突起６４が係止される係止穴６５と、が形成される。   As a rolling bearing cage for high-speed rotation, as shown in FIG. 18, a rolling bearing cage 60 having a pair of cage segment pieces 61a and 61b divided in the axial direction has been proposed ( For example, see Patent Document 1). In this pair of cage split pieces 61a and 61b, for example, by pressing a steel plate, a concave spherical pocket forming portion 62 and a flat column forming portion 63 are substantially equal in the circumferential direction. They are formed alternately at intervals. Also, the column forming portion 63 of the pair of cage split pieces 61a and 61b has a locking projection 64 and a locking hole 65 for locking the locking projection 64 of the counterpart cage split pieces 61b and 61a. Is formed.

そして、一対の保持器分割片６１ａ，６１ｂの係止突起６４を相手側の保持器分割片６１ｂ，６１ａの係止穴６５に係止することにより、一対の保持器分割片６１ａ，６１ｂを軸方向に結合している。これにより、柱形成部６３の結合部分に保持器柱が形成されると共に、ポケット形成部６２間に玉６６を転動可能に保持するポケット部が形成される（図１９参照）。   The pair of retainer split pieces 61a and 61b are pivoted by engaging the locking projections 64 of the pair of retainer split pieces 61a and 61b with the lock holes 65 of the counterpart retainer split pieces 61b and 61a. Combined in the direction. As a result, a retainer column is formed at the coupling portion of the column forming portion 63 and a pocket portion is formed between the pocket forming portions 62 so as to hold the balls 66 in a rollable manner (see FIG. 19).

特開２００３−３４３５７１号公報JP 2003-343571 A

しかしながら、従来の転がり軸受５０に組み込まれる冠型保持器５４は、転動体案内型の保持器であり、開口部５７側と保持器リム側とが軸方向において非対称な断面形状になっているため、近年の高速回転化への対応により、図１７に示すように、開口部５７側の軸方向端部に保持器回転（転動体公転）による遠心力が働き、保持器リム側の軸方向端部を捩れ軸とした弾性或いは塑性変形による捩れ変形が生じて、保持器が外輪に接触する可能性があった。   However, the crown type cage 54 incorporated in the conventional rolling bearing 50 is a rolling element guide type cage, and the opening 57 side and the cage rim side have an asymmetric cross-sectional shape in the axial direction. In response to the recent high speed rotation, as shown in FIG. 17, the centrifugal force due to the cage rotation (rolling element revolution) acts on the axial end on the opening 57 side, and the axial end on the cage rim side There is a possibility that the cage comes into contact with the outer ring due to the torsional deformation caused by the elastic or plastic deformation with the portion as the torsion shaft.

また、上記特許文献１に記載の転がり軸受用保持器６０では、転がり軸受用保持器６０が軸方向に対称な断面形状であるため、高速回転時の遠心力に起因する捩れ変形は回避することはできるが、図１９に示すように、転がり軸受用保持器６０が軸方向（矢印Ａ方向）にガタついた場合は、一方の保持器分割片６１ａが玉６６に引っかかって、一対の保持器分割片６１ａ，６１ｂを分離させようとする力Ｆが生じてしまい、転がり軸受用保持器６０が分解する可能性があった。   Further, in the rolling bearing cage 60 described in Patent Document 1, since the rolling bearing cage 60 has a cross-sectional shape that is symmetrical in the axial direction, torsional deformation due to centrifugal force during high-speed rotation should be avoided. However, as shown in FIG. 19, when the rolling bearing retainer 60 rattles in the axial direction (arrow A direction), one retainer split piece 61a is caught by the ball 66, and a pair of retainers There is a possibility that a force F for separating the divided pieces 61a and 61b is generated, and the rolling bearing retainer 60 is disassembled.

本発明は、このような不都合を解消するためになされたものであり、その目的は、高速回転時の保持器の捩れ変形を防止することができると共に、ガタつきによる保持器の分解を防止することができる転がり軸受用保持器及び転がり軸受を提供することにある。   The present invention has been made to eliminate such inconveniences, and an object of the present invention is to prevent torsional deformation of the cage during high-speed rotation and to prevent disassembly of the cage due to rattling. Another object of the present invention is to provide a rolling bearing cage and a rolling bearing that can be used.

本発明の上記目的は、下記の構成により達成される。
（１） 軸方向に分割された一対の保持器分割片を備え、複数の転動体を円周方向に転動可能に保持する円環状の転がり軸受用保持器であって、一対の保持器分割片には、転動体を保持するための一対の爪部を形成した第１ポケット部が円周方向に複数配置され、一対の保持器分割片の第１ポケット部間には、相手側の保持器分割片の一対の爪部を嵌合させるための一対の溝部を形成した第２ポケット部が配置され、一対の爪部には、係合部が形成され、一対の溝部には、係合部と係合する被係合部が形成されることを特徴とする転がり軸受用保持器。
（２） 軸方向に分割された一対の保持器分割片を備え、複数の転動体を円周方向に転動可能に保持する円環状の転がり軸受用保持器であって、一方の保持器分割片には、転動体を保持するための一対の爪部を形成した第１ポケット部が円周方向に複数配置され、他方の保持器分割片には、一対の爪部を嵌合させるための一対の溝部を形成した第２ポケット部が円周方向に複数配置され、一対の爪部には、係合部が形成され、一対の溝部には、係合部と係合する被係合部が形成されることを特徴とする転がり軸受用保持器。
（３） 外輪と内輪との間に複数の転動体が保持器を介して円周方向に転動可能に配設される転がり軸受であって、保持器として、（１）又は（２）に記載の転がり軸受用保持器を使用することを特徴とする転がり軸受。 The above object of the present invention can be achieved by the following constitution.
(1) An annular rolling bearing retainer that includes a pair of cage split pieces that are divided in the axial direction and that holds a plurality of rolling elements so as to roll in a circumferential direction. A plurality of first pocket portions formed with a pair of claw portions for holding the rolling elements are arranged in the circumferential direction on the piece, and the other side is held between the first pocket portions of the pair of cage split pieces. A second pocket portion having a pair of groove portions for fitting the pair of claw portions of the instrument split piece is disposed, an engagement portion is formed on the pair of claw portions, and an engagement portion is formed on the pair of groove portions. A cage for a rolling bearing, wherein an engaged portion that engages with the portion is formed.
(2) An annular rolling bearing retainer that includes a pair of retainer split pieces divided in the axial direction and holds a plurality of rolling elements so as to be able to roll in the circumferential direction. The piece has a plurality of circumferentially arranged first pocket portions formed with a pair of claws for holding the rolling elements, and the other cage split piece is fitted with the pair of claws. A plurality of second pocket portions having a pair of groove portions are arranged in the circumferential direction, an engagement portion is formed on the pair of claw portions, and an engaged portion that engages with the engagement portion is formed on the pair of groove portions. A cage for a rolling bearing, characterized in that is formed.
(3) A rolling bearing in which a plurality of rolling elements are arranged between the outer ring and the inner ring so as to be able to roll in the circumferential direction via a cage, and as a cage, (1) or (2) A rolling bearing comprising the rolling bearing retainer as described.

本発明の転がり軸受用保持器及び転がり軸受によれば、一対の保持器分割片には、転動体を保持するための一対の爪部を形成した第１ポケット部が円周方向に複数配置され、一対の保持器分割片の第１ポケット部間には、相手側の保持器分割片の一対の爪部を嵌合させるための一対の溝部を形成した第２ポケット部が配置され、一対の爪部には、係合部が形成され、一対の溝部には、係合部と係合する被係合部が形成されるため、高速回転時の遠心力による一対の保持器分割片の捩れ変形を互いに規制することができるので、保持器の捩れ変形を防止することができる。また、保持器が軸方向にガタついたとしても、保持器に一対の保持器分割片を分離させようとする力が生じることはないので、保持器の分解を防止することができる。   According to the rolling bearing cage and the rolling bearing of the present invention, a plurality of first pocket portions in which a pair of claw portions for holding a rolling element are formed are arranged in the circumferential direction in the pair of cage split pieces. Between the first pocket portions of the pair of cage split pieces, a second pocket portion having a pair of grooves for fitting the pair of claw portions of the counterpart cage split piece is disposed. An engaging portion is formed in the claw portion, and an engaged portion that engages with the engaging portion is formed in the pair of groove portions, so that the pair of cage split pieces are twisted by centrifugal force during high-speed rotation. Since the deformations can be restricted to each other, the torsional deformation of the cage can be prevented. Further, even if the cage is rattled in the axial direction, no force is generated to cause the cage to separate the pair of cage split pieces, so that the cage can be prevented from being disassembled.

以下、本発明に係る転がり軸受用保持器及び転がり軸受の各実施形態について、図面を参照して詳細に説明する。   DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a rolling bearing cage and a rolling bearing according to the present invention will be described in detail with reference to the drawings.

（第１実施形態）
まず、図１〜図１０を参照して、本発明に係る転がり軸受用保持器及び転がり軸受の第１実施形態について説明する。
図１は本発明に係る転がり軸受用保持器及び転がり軸受の第１実施形態を説明するための一部切欠斜視図、図２は図１に示す転がり軸受用保持器を構成する保持器分割片を説明するための斜視図、図３は図２に示す保持器分割片の要部拡大斜視図、図４は図１に示す転がり軸受用保持器の係合部分を径方向外側から見た要部拡大斜視図、図５は図４に示す転がり軸受用保持器の係合部分を径方向外側から見た側面図、図６は図４に示す転がり軸受用保持器の係合部分を径方向内側から見た要部拡大斜視図、図７は本発明の転がり軸受用保持器及び転がり軸受の第１実施形態の変形例を説明するための一部切欠斜視図、図８は図７に示す転がり軸受用保持器を構成する保持器分割片を説明するための斜視図、図９は図８に示す保持器分割片の要部拡大斜視図、図１０は図７に示す転がり軸受用保持器の係合部分を径方向外側から見た要部拡大斜視図である。 (First embodiment)
First, with reference to FIGS. 1-10, 1st Embodiment of the cage for rolling bearings and rolling bearing which concern on this invention is described.
FIG. 1 is a partially cutaway perspective view for explaining a first embodiment of a rolling bearing cage and a rolling bearing according to the present invention, and FIG. 2 is a cage divided piece constituting the rolling bearing cage shown in FIG. FIG. 3 is an enlarged perspective view of a main part of the cage split piece shown in FIG. 2, and FIG. 4 is a view of the engagement portion of the rolling bearing cage shown in FIG. 1 viewed from the outside in the radial direction. FIG. 5 is a side view of the engaging portion of the rolling bearing retainer shown in FIG. 4 as viewed from the outside in the radial direction, and FIG. 6 is the engaging portion of the rolling bearing retainer shown in FIG. FIG. 7 is a partially cutaway perspective view for explaining a modification of the first embodiment of the rolling bearing retainer and the rolling bearing according to the present invention, and FIG. 8 shows FIG. The perspective view for demonstrating the cage | basket division | segmentation piece which comprises the cage for rolling bearings, FIG. 9 is the principal of the cage | basket division | segmentation piece shown in FIG. Enlarged perspective view, FIG. 10 is an enlarged perspective view of the engagement portion of the rolling bearing retainer shown in FIG. 7 from the radially outer side.

本実施形態の玉軸受（転がり軸受）１０は、図１に示すように、内周面に外輪軌道面１１ａを有する外輪１１と、外周面に不図示の内輪軌道面を有する内輪１２と、外輪軌道面１１ａと不図示の内輪軌道面との間に転動自在に配設される複数の玉（転動体）１３と、複数の玉１３を円周方向に等間隔に保持する玉軸受用保持器（転がり軸受用保持器）１４と、を備える。   As shown in FIG. 1, a ball bearing (rolling bearing) 10 of this embodiment includes an outer ring 11 having an outer ring raceway surface 11a on an inner peripheral surface, an inner ring 12 having an inner ring raceway surface (not shown) on an outer peripheral surface, and an outer ring. A plurality of balls (rolling elements) 13 that are rotatably arranged between the raceway surface 11a and an inner ring raceway surface (not shown), and a ball bearing holder that holds the plurality of balls 13 at equal intervals in the circumferential direction. (Roller bearing retainer) 14.

玉軸受用保持器１４は、振れ回りを抑えるために軌道輪案内型であり、軸方向に分割された一対の保持器分割片１５ａ，１５ｂを備える。この一対の保持器分割片１５ａ，１５ｂは、共に同一構造とされており、合成樹脂などの射出成形などにより一体に成形される。   The ball bearing retainer 14 is a bearing ring guide type in order to suppress swinging, and includes a pair of cage split pieces 15a and 15b divided in the axial direction. The pair of cage split pieces 15a and 15b have the same structure, and are integrally formed by injection molding such as synthetic resin.

一対の保持器分割片１５ａ，１５ｂの樹脂材料としては、４６ナイロンや６６ナイロン等のポリアミド系樹脂、ポリブチレンテレフタレート、ポリフェレンサルファイド（ＰＰＳ）、ポリアミドイミド（ＰＡＩ）、熱可塑性ポリイミド、ポリエーテルエーテルケトン（ＰＥＥＫ）、及びポリエーテルニトリル（ＰＥＮ）等を挙げることができる。また、これらの樹脂材料に１０〜５０重量％の繊維状充填材（例えば、ガラス繊維や炭素繊維等）を適宜添加することにより、玉軸受用保持器１４の剛性及び寸法精度を向上させることができる。   As a resin material of the pair of cage split pieces 15a and 15b, polyamide resin such as 46 nylon or 66 nylon, polybutylene terephthalate, polyferene sulfide (PPS), polyamideimide (PAI), thermoplastic polyimide, polyether ether Examples thereof include ketone (PEEK) and polyether nitrile (PEN). Moreover, the rigidity and dimensional accuracy of the ball bearing cage 14 can be improved by appropriately adding 10 to 50% by weight of a fibrous filler (for example, glass fiber or carbon fiber) to these resin materials. it can.

一対の保持器分割片１５ａ，１５ｂは、図２及び図３に示すように、短い円筒形状をなしており、球面状の内周面を有する半円形状の第１ポケット部１６が円周方向に等間隔に形成されると共に、この第１ポケット部１６間に、球面状の内周面を有する半円形状の第２ポケット部１７がそれぞれ形成される。即ち、一対の保持器分割片１５ａ，１５ｂには、第１ポケット部１６及び第２ポケット部１７が円周方向に交互に形成される。   As shown in FIGS. 2 and 3, the pair of cage split pieces 15 a and 15 b have a short cylindrical shape, and the semicircular first pocket portion 16 having a spherical inner peripheral surface has a circumferential direction. The semi-circular second pocket portions 17 each having a spherical inner peripheral surface are formed between the first pocket portions 16. That is, the first pocket portions 16 and the second pocket portions 17 are alternately formed in the circumferential direction in the pair of cage split pieces 15a and 15b.

第１ポケット部１６には、その内周面の円周方向両端部に玉１３を保持するための一対の爪部１８が軸方向に突出して形成されており、この一対の爪部１８の先端部には、径方向外方に突出する係合凸部（係合部）１８ａが形成される。また、一対の爪部１８は、保持器分割片１５ａ，１５ｂの径方向内側寄りに配置されている。   The first pocket portion 16 is formed with a pair of claw portions 18 for holding the balls 13 at both ends of the inner circumferential surface in the circumferential direction so as to protrude in the axial direction. The part is formed with an engaging convex part (engaging part) 18a protruding outward in the radial direction. Further, the pair of claw portions 18 are disposed closer to the inside in the radial direction of the cage split pieces 15a and 15b.

第２ポケット部１７には、その内周面の円周方向両端部に相手側の保持器分割片１５ｂ，１５ａの一対の爪部１８を嵌合させるための一対の溝部１９が形成されており、この一対の溝部１９には、一対の爪部１８の係合凸部１８ａを係合させる係合凹部（被係合部）１９ａが形成される。   The second pocket portion 17 is formed with a pair of groove portions 19 for fitting the pair of claw portions 18 of the counterpart cage split pieces 15b, 15a to both ends of the inner circumferential surface in the circumferential direction. In the pair of grooves 19, an engagement recess (engaged portion) 19 a for engaging the engagement projection 18 a of the pair of claws 18 is formed.

そして、図４に示すように、保持器分割片１５ａ，１５ｂの一対の爪部１８を相手側の保持器分割片１５ｂ，１５ａの一対の溝部１９に嵌合すると共に、一対の爪部１８の係合凸部１８ａを一対の溝部１９の係合凹部１９ａに係合することによって、保持器分割片１５ａ，１５ｂが軸方向に結合されて玉軸受用保持器１４が構成される。   Then, as shown in FIG. 4, the pair of claw portions 18 of the cage split pieces 15 a and 15 b are fitted into the pair of groove portions 19 of the counterpart cage split pieces 15 b and 15 a, and the pair of claw portions 18 By engaging the engaging convex portion 18a with the engaging concave portion 19a of the pair of groove portions 19, the cage split pieces 15a and 15b are coupled in the axial direction to form the ball bearing cage 14.

さらに、本実施形態の玉軸受用保持器１４では、図５及び図６に示すように、第１ポケット部１６の一対の爪部１８の内周面が第２ポケット部１７の内周面より内側（玉１３側）に突出しており、玉１３は一対の爪部１８に保持される。また、一対の爪部１８と一対の溝部１９との間には、一対の爪部１８を開かせるための間隙が設けられており、この一対の爪部１８の開度は一対の溝部１９で規制される。そして、一対の爪部１８の開く量Ｘは、玉軸受用保持器１４が軸方向（矢印Ａ方向）にガタついたとしても、玉１３と第２ポケット部１７の底部との間にすき間Ｙが残存する範囲内に設定される。これにより、玉１３と第２ポケット部１７との間に常にすき間Ｙが残存するため、玉軸受用保持器１４に一対の保持器分割片１５ａ，１５ｂを分離させようとする力が生じることはない。   Furthermore, in the ball bearing cage 14 of the present embodiment, as shown in FIGS. 5 and 6, the inner peripheral surface of the pair of claws 18 of the first pocket portion 16 is more than the inner peripheral surface of the second pocket portion 17. It protrudes inward (ball 13 side), and the ball 13 is held by a pair of claw portions 18. Further, a gap for opening the pair of claws 18 is provided between the pair of claws 18 and the pair of grooves 19, and the opening degree of the pair of claws 18 is determined by the pair of grooves 19. Be regulated. The opening amount X of the pair of claw portions 18 is a gap Y between the ball 13 and the bottom portion of the second pocket portion 17 even if the ball bearing retainer 14 rattles in the axial direction (arrow A direction). Is set within the remaining range. As a result, a gap Y always remains between the ball 13 and the second pocket portion 17, so that a force for separating the pair of cage split pieces 15 a and 15 b from the ball bearing cage 14 is generated. Absent.

以上説明したように、本実施形態の玉軸受用保持器１４及び玉軸受１０によれば、一対の保持器分割片１５ａ，１５ｂには、玉１３を保持するための一対の爪部１８を形成した第１ポケット部１６が円周方向に複数配置され、一対の保持器分割片１５ａ，１５ｂの第１ポケット部１６間には、相手側の保持器分割片１５ｂ，１５ａの一対の爪部１８を嵌合させるための一対の溝部１９を形成した第２ポケット部１７が配置され、一対の爪部１８には、係合凸部１８ａが形成され、一対の溝部１９には、係合凸部１８ａと係合する係合凹部１９ａが形成されるため、高速回転時の遠心力による保持器分割片１５ａの捩れ変形を保持器分割片１５ｂで規制することができると共に、遠心力による保持器分割片１５ｂの捩れ変形を保持器分割片１５ａで規制することができる。これにより、玉軸受用保持器１４に過大な応力が加わるのを回避することができ、玉軸受用保持器１４の捩れ変形を防止することができる。   As described above, according to the ball bearing retainer 14 and the ball bearing 10 of the present embodiment, a pair of claw portions 18 for holding the ball 13 is formed in the pair of cage split pieces 15a and 15b. A plurality of the first pocket portions 16 are arranged in the circumferential direction, and a pair of claw portions 18 of the counterpart cage split pieces 15b and 15a are provided between the first pocket portions 16 of the pair of cage split pieces 15a and 15b. A second pocket portion 17 having a pair of groove portions 19 for fitting the first and second groove portions 19 is disposed, an engagement convex portion 18a is formed on the pair of claw portions 18, and an engagement convex portion is formed on the pair of groove portions 19. Since the engaging recess 19a is formed to engage with 18a, the torsional deformation of the cage split piece 15a due to the centrifugal force during high-speed rotation can be restricted by the cage split piece 15b, and the cage split due to the centrifugal force can be controlled. The torsional deformation of the piece 15b is applied to the cage dividing piece 15 In can be regulated. Thereby, it is possible to prevent an excessive stress from being applied to the ball bearing retainer 14, and torsional deformation of the ball bearing retainer 14 can be prevented.

また、本実施形態の玉軸受用保持器１４及び玉軸受１０によれば、玉軸受用保持器１４が軸方向にガタついたとしても、玉１３と第２ポケット部１７の底部との間にすき間Ｙが常に残存するため、玉軸受用保持器１４に生じる軸方向の力は一対の保持器分割片１５ａ，１５ｂの一対の爪部１８で受けることになる。これにより、玉軸受用保持器１４に一対の保持器分割片１５ａ，１５ｂを分離させようとする力が生じることはないので、玉軸受用保持器１４の分解を防止することができる。   Further, according to the ball bearing retainer 14 and the ball bearing 10 of the present embodiment, even if the ball bearing retainer 14 rattles in the axial direction, it is between the ball 13 and the bottom portion of the second pocket portion 17. Since the gap Y always remains, the axial force generated in the ball bearing retainer 14 is received by the pair of claws 18 of the pair of retainer split pieces 15a and 15b. Thereby, since the force which is going to separate a pair of retainer division | segmentation piece 15a, 15b in the ball bearing retainer 14 does not arise, decomposition | disassembly of the ball bearing retainer 14 can be prevented.

また、本実施形態の玉軸受用保持器１４及び玉軸受１０によれば、一対の保持器分割片１５ａ，１５ｂの一対の爪部１８の開度を一対の保持器分割片１５ａ，１５ｂの一対の溝部１９で規制するため、玉軸受用保持器１４の分解を確実に防止することができる。   Further, according to the ball bearing retainer 14 and the ball bearing 10 of the present embodiment, the opening of the pair of claw portions 18 of the pair of cage split pieces 15a, 15b is set to a pair of the pair of cage split pieces 15a, 15b. Therefore, it is possible to reliably prevent the ball bearing retainer 14 from being disassembled.

さらに、本実施形態の玉軸受用保持器１４及び玉軸受１０によれば、一対の爪部１８が保持器分割片１５ａ，１５ｂの径方向内側寄りに配置されるため、保持器分割片１５ａ，１５ｂの一対の爪部１８側の軸方向端部に生じる慣性力を低減することができるので、玉軸受用保持器１４の捩れ変形を確実に防止することができる。   Furthermore, according to the ball bearing retainer 14 and the ball bearing 10 of the present embodiment, the pair of claw portions 18 are arranged on the radially inner side of the cage split pieces 15a and 15b. Since the inertial force generated at the axial ends on the side of the pair of claws 18 of 15b can be reduced, the torsional deformation of the ball bearing retainer 14 can be reliably prevented.

なお、本実施形態の玉軸受用保持器１４及び玉軸受１０の変形例として、図７〜図１０に示すように、玉軸受用保持器１４は、一対の保持器分割片１５ａ，１５ｂの第１ポケット部１６と第２ポケット部１７との間に形成される柱部１５ｃの板厚を、一対の保持器分割片１５ａ，１５ｂのリム部１５ｄの板厚より薄肉にするようにしてもよい。   As a modification of the ball bearing retainer 14 and the ball bearing 10 of the present embodiment, as shown in FIGS. 7 to 10, the ball bearing retainer 14 includes a pair of retainer split pieces 15a and 15b. The plate portion 15c formed between the one pocket portion 16 and the second pocket portion 17 may be thinner than the plate thickness of the rim portion 15d of the pair of cage split pieces 15a and 15b. .

この場合、一対の保持器分割片１５ａ，１５ｂの柱部１５ｃが軽量化されるので、一対の保持器分割片１５ａ，１５ｂに生じる慣性力を低減することができ、玉軸受用保持器１４に対する遠心力の影響を抑制することができる。   In this case, since the column portion 15c of the pair of cage split pieces 15a and 15b is reduced in weight, the inertial force generated in the pair of cage split pieces 15a and 15b can be reduced, and the ball bearing cage 14 can be reduced. The influence of centrifugal force can be suppressed.

（第２実施形態）
次に、図１１〜図１４を参照して、本発明に係る転がり軸受用保持器の第２実施形態について説明する。なお、第１実施形態と同一又は同等部分については、図面に同一符号を付してその説明を省略或いは簡略化する。
図１１は本発明の第２実施形態の転がり軸受用保持器を構成する一方の保持器分割片を説明するための斜視図、図１２は本発明の第２実施形態の転がり軸受用保持器を構成する他方の保持器分割片を説明するための斜視図、図１３は本発明の第２実施形態の転がり軸受用保持器の変形例を構成する一方の保持器分割片を説明するための斜視図、図１４は本発明の第２実施形態の転がり軸受用保持器の変形例を構成する他方の保持器分割片を説明するための斜視図である。 (Second Embodiment)
Next, with reference to FIGS. 11-14, 2nd Embodiment of the cage for rolling bearings which concerns on this invention is described. Note that portions that are the same as or equivalent to those of the first embodiment are denoted by the same reference numerals in the drawings, and description thereof is omitted or simplified.
FIG. 11 is a perspective view for explaining one cage split piece constituting the rolling bearing cage of the second embodiment of the present invention, and FIG. 12 shows the rolling bearing cage of the second embodiment of the present invention. The perspective view for demonstrating the other cage | basket division piece to comprise, FIG. 13 is the perspective view for demonstrating one cage | basket division piece which comprises the modification of the cage for rolling bearings of 2nd Embodiment of this invention. FIG. 14 and FIG. 14 are perspective views for explaining the other cage split piece constituting the modified example of the rolling bearing cage of the second embodiment of the present invention.

本実施形態の玉軸受用保持器（転がり軸受用保持器）２４は、図１に示すように、上記第１実施形態と同様に転がり軸受１０に組み込まれるものである。この玉軸受用保持器２４は、振れ回りを抑えるために軌道輪案内型であり、図１１及び図１２に示すように、軸方向に分割された一対の保持器分割片２５ａ，２５ｂを備える。この一対の保持器分割片２５ａ，２５ｂは、上記第１実施形態と同様に合成樹脂などの射出成形などにより一体に成形される。   As shown in FIG. 1, the ball bearing cage (rolling bearing cage) 24 of the present embodiment is incorporated into the rolling bearing 10 in the same manner as in the first embodiment. This ball bearing retainer 24 is a bearing ring guide type in order to suppress swinging, and includes a pair of retainer divided pieces 25a and 25b divided in the axial direction as shown in FIGS. The pair of cage split pieces 25a and 25b are integrally formed by injection molding of synthetic resin or the like as in the first embodiment.

保持器分割片２５ａは、図１１に示すように、短い円筒形状をなしており、球面状の内周面を有する半円形状の第１ポケット部１６が円周方向に等間隔に形成される。第１ポケット部１６には、その内周面の円周方向両端部に玉１３を保持するための一対の爪部１８が軸方向に突出して形成されており、この一対の爪部１８の先端部には、径方向外方に突出する係合凸部１８ａが形成される。また、一対の爪部１８は、保持器分割片２５ａの径方向内側寄りに配置されている。   As shown in FIG. 11, the cage dividing piece 25 a has a short cylindrical shape, and semicircular first pocket portions 16 having a spherical inner peripheral surface are formed at equal intervals in the circumferential direction. . The first pocket portion 16 is formed with a pair of claw portions 18 for holding the balls 13 at both ends of the inner circumferential surface in the circumferential direction so as to protrude in the axial direction. The part is formed with an engaging convex part 18a protruding outward in the radial direction. In addition, the pair of claw portions 18 are disposed closer to the inside in the radial direction of the cage split piece 25a.

保持器分割片２５ｂは、図１２に示すように、短い円筒形状をなしており、球面状の内周面を有する半円形状の第２ポケット部１７が保持器分割片２５ａの第１ポケット部１６に対応するように円周方向に等間隔に形成される。第２ポケット部１７には、その内周面の円周方向両端部に保持器分割片２５ａの一対の爪部１８を嵌合させるための一対の溝部１９が形成されており、この一対の溝部１９には、一対の爪部１８の係合凸部１８ａを係合させる係合凹部１９ａが形成される。   As shown in FIG. 12, the cage divided piece 25b has a short cylindrical shape, and the semicircular second pocket portion 17 having a spherical inner peripheral surface is the first pocket portion of the cage divided piece 25a. 16 are formed at equal intervals in the circumferential direction so as to correspond to 16. The second pocket portion 17 is formed with a pair of groove portions 19 for fitting the pair of claw portions 18 of the cage split piece 25a to both ends of the inner circumferential surface in the circumferential direction. 19 is formed with an engagement recess 19a for engaging the engagement protrusions 18a of the pair of claws 18.

そして、保持器分割片２５ａの一対の爪部１８を相手側の保持器分割片２５ｂの一対の溝部１９に嵌合すると共に、一対の爪部１８の係合凸部１８ａを一対の溝部１９の係合凹部１９ａに係合することによって、保持器分割片２５ａ，２５ｂが軸方向に結合されて玉軸受用保持器２４が構成される。   And while fitting a pair of nail | claw part 18 of the holder | retainer division | segmentation piece 25a into a pair of groove part 19 of the other party | catch division | segmentation piece 25b, the engagement convex part 18a of a pair of nail | claw part 18 of the pair of groove | channel part 19 is used. By engaging with the engaging recess 19a, the cage split pieces 25a and 25b are joined in the axial direction to form the ball bearing cage 24.

以上説明したように、本実施形態の玉軸受用保持器２４によれば、一方の保持器分割片２５ａには、玉１３を保持するための一対の爪部１８を形成した第１ポケット部１６が円周方向に複数配置され、他方の保持器分割片２５ｂには、一対の爪部１８を嵌合させるための一対の溝部１９を形成した第２ポケット部１７が円周方向に複数配置され、一対の爪部１８には、係合凸部１８ａが形成され、一対の溝部１９には、係合凸部１８ａと係合する係合凹部１９ａが形成されるため、高速回転時の遠心力による一方の保持器分割片２５ａの捩れ変形を他方の保持器分割片２５ｂで規制することができる。これにより、玉軸受用保持器２４に過大な応力が加わるのを回避することができ、玉軸受用保持器２４の捩れ変形を防止することができる。   As described above, according to the ball bearing cage 24 of the present embodiment, the first pocket portion 16 in which the pair of claw portions 18 for holding the balls 13 is formed in one cage split piece 25a. Are arranged in the circumferential direction, and a plurality of second pocket portions 17 having a pair of groove portions 19 for fitting the pair of claw portions 18 are arranged in the circumferential direction in the other cage divided piece 25b. The pair of claw portions 18 are formed with engaging convex portions 18a, and the pair of groove portions 19 are formed with engaging concave portions 19a that engage with the engaging convex portions 18a. The torsional deformation of one cage split piece 25a can be restricted by the other cage split piece 25b. Thereby, it is possible to avoid applying excessive stress to the ball bearing cage 24 and to prevent the ball bearing cage 24 from being twisted.

また、本実施形態の玉軸受用保持器２４によれば、玉軸受用保持器２４が軸方向にガタついたとしても、上記第１実施形態と同様に、玉１３と第２ポケット部１７の底部との間にすき間Ｙが常に残存するため、玉軸受用保持器２４に生じる軸方向の力は全て保持器分割片２５ａの一対の爪部１８及び第１ポケット部１６の底部で受けることになる。これにより、玉軸受用保持器２４に一対の保持器分割片２５ａ，２５ｂを分離させようとする力が生じることはないので、玉軸受用保持器２４の分解を防止することができる。
その他の構成及び作用効果については、上記第１実施形態と同様である。 Further, according to the ball bearing retainer 24 of the present embodiment, even if the ball bearing retainer 24 rattles in the axial direction, the ball 13 and the second pocket portion 17 are similar to those in the first embodiment. Since the gap Y always remains between the bottom and the bottom, the axial force generated in the ball bearing retainer 24 is all received by the pair of claws 18 of the retainer split piece 25a and the bottom of the first pocket 16. Become. Thereby, since the force which is going to isolate | separate a pair of retainer division | segmentation piece 25a, 25b does not arise in the retainer 24 for ball bearings, decomposition | disassembly of the retainer 24 for ball bearings can be prevented.
About another structure and an effect, it is the same as that of the said 1st Embodiment.

なお、本実施形態の玉軸受用保持器２４の変形例として、図１３〜図１４に示すように、玉軸受用保持器２４は、保持器分割片２５ａの第１ポケット部１６間に形成される柱部２６ａの板厚を、保持器分割片２５ａのリム部２６ｂの板厚より薄肉にすると共に、保持器分割片２５ｂの第２ポケット部１７間に形成される柱部２７ａの板厚を、保持器分割片２５ｂのリム部２７ｂの板厚より薄肉にするようにしてもよい。   As a modification of the ball bearing retainer 24 of the present embodiment, as shown in FIGS. 13 to 14, the ball bearing retainer 24 is formed between the first pocket portions 16 of the retainer split piece 25a. The thickness of the column portion 26a is made thinner than the thickness of the rim portion 26b of the cage divided piece 25a, and the thickness of the column portion 27a formed between the second pocket portions 17 of the cage divided piece 25b is reduced. The thickness of the rim portion 27b of the cage split piece 25b may be thinner.

この場合、一対の保持器分割片２５ａ，２５ｂの柱部２６ａ，２７ａが軽量化されるので、一対の保持器分割片２５ａ，２５ｂに生じる慣性力を低減することができ、玉軸受用保持器２４に対する遠心力の影響を抑制することができる。   In this case, since the column portions 26a and 27a of the pair of cage split pieces 25a and 25b are reduced in weight, the inertial force generated in the pair of cage split pieces 25a and 25b can be reduced, and the ball bearing cage The influence of centrifugal force on 24 can be suppressed.

なお、本発明は、上記各実施形態に例示したものに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適宜変更可能である。
例えば、上記実施形態では、一対の爪部を有する第１ポケット部と一対の溝部を有する第２ポケット部とを同一の保持器分割片に形成するか、もしくは一対の爪部を有する第１ポケット部と一対の溝部を有する第２ポケット部とを別々の保持器分割片に形成する場合を例示したが、保持器が軸方向にガタついた時に、玉が一対の爪部にあたるようにして、保持器に一対の保持器分割片を分離させようとする力が生じないようにするものであれば、保持器の係合方法に特に限定はない。
また、上記各実施形態では、軌道輪案内型の保持器を例示したが、これに限定されず、例えば、玉案内型の保持器に本発明を適用してもよい。 In addition, this invention is not limited to what was illustrated by said each embodiment, In the range which does not deviate from the summary of this invention, it can change suitably.
For example, in the said embodiment, the 1st pocket part which has a pair of nail | claw part and the 2nd pocket part which has a pair of groove part are formed in the same holder | retainer division | segmentation piece, or the 1st pocket which has a pair of nail | claw part The case where the second pocket portion having the portion and the pair of groove portions is formed in separate cage split pieces, but when the cage rattles in the axial direction, the ball hits the pair of claw portions, The method for engaging the cage is not particularly limited as long as it does not cause a force to cause the cage to separate the pair of cage split pieces.
In each of the above embodiments, the raceway guide type retainer is illustrated, but the present invention is not limited to this, and the present invention may be applied to, for example, a ball guide type retainer.

本発明に係る転がり軸受用保持器及び転がり軸受の第１実施形態を説明するための一部切欠斜視図である。It is a partially cutaway perspective view for demonstrating 1st Embodiment of the cage for rolling bearings and rolling bearing which concern on this invention. 図１に示す転がり軸受用保持器を構成する保持器分割片を説明するための斜視図である。It is a perspective view for demonstrating the cage | basket division | segmentation piece which comprises the cage for rolling bearings shown in FIG. 図２に示す保持器分割片の要部拡大斜視図である。It is a principal part expansion perspective view of the holder | retainer division | segmentation piece shown in FIG. 図１に示す転がり軸受用保持器の係合部分を径方向外側から見た要部拡大斜視図である。It is the principal part expansion perspective view which looked at the engaging part of the cage for rolling bearings shown in FIG. 1 from the radial direction outer side. 図４に示す転がり軸受用保持器の係合部分を径方向外側から見た側面図である。It is the side view which looked at the engaging part of the cage for rolling bearings shown in FIG. 4 from the radial direction outer side. 図４に示す転がり軸受用保持器の係合部分を径方向内側から見た要部拡大斜視図である。It is the principal part expansion perspective view which looked at the engaging part of the cage for rolling bearings shown in FIG. 4 from the radial direction inner side. 本発明の転がり軸受用保持器及び転がり軸受の第１実施形態の変形例を説明するための一部切欠斜視図である。It is a partially cutaway perspective view for demonstrating the modification of 1st Embodiment of the cage for rolling bearings and rolling bearing of this invention. 図７に示す転がり軸受用保持器を構成する保持器分割片を説明するための斜視図である。It is a perspective view for demonstrating the cage split piece which comprises the cage for rolling bearings shown in FIG. 図８に示す保持器分割片の要部拡大斜視図である。It is a principal part expansion perspective view of the holder | retainer division | segmentation piece shown in FIG. 図７に示す転がり軸受用保持器の係合部分を径方向外側から見た要部拡大斜視図である。It is the principal part expansion perspective view which looked at the engaging part of the cage for rolling bearings shown in FIG. 7 from the radial direction outer side. 本発明の第２実施形態の転がり軸受用保持器を構成する一方の保持器分割片を説明するための斜視図である。It is a perspective view for demonstrating one retainer division | segmentation piece which comprises the cage for rolling bearings of 2nd Embodiment of this invention. 本発明の第２実施形態の転がり軸受用保持器を構成する他方の保持器分割片を説明するための斜視図である。It is a perspective view for demonstrating the other holder | retainer division | segmentation piece which comprises the cage for rolling bearings of 2nd Embodiment of this invention. 本発明の第２実施形態の転がり軸受用保持器の変形例を構成する一方の保持器分割片を説明するための斜視図である。It is a perspective view for demonstrating one cage | basket division piece which comprises the modification of the cage for rolling bearings of 2nd Embodiment of this invention. 本発明の第２実施形態の転がり軸受用保持器の変形例を構成する他方の保持器分割片を説明するための斜視図である。It is a perspective view for demonstrating the other holder | retainer division | segmentation piece which comprises the modification of the cage for rolling bearings of 2nd Embodiment of this invention. 従来の転がり軸受を説明するための要部断面図である。It is principal part sectional drawing for demonstrating the conventional rolling bearing. 図１５に示す転がり軸受に組み込まれる従来の転がり軸受用保持器を説明するための斜視図である。It is a perspective view for demonstrating the conventional cage for rolling bearings integrated in the rolling bearing shown in FIG. 従来の転がり軸受用保持器に生じる捩れ変形を説明するための要部断面図である。It is principal part sectional drawing for demonstrating the torsional deformation which arises in the conventional cage for rolling bearings. 従来の他の転がり軸受用保持器の要部分解斜視図である。It is a principal part disassembled perspective view of the other conventional cage for rolling bearings. 図１８に示す転がり軸受用保持器の不具合を説明するための要部拡大断面図である。It is a principal part expanded sectional view for demonstrating the malfunction of the cage for rolling bearings shown in FIG.

符号の説明Explanation of symbols

１０ 玉軸受（転がり軸受）
１１ 内輪
１２ 外輪
１３ 玉（転動体）
１４，２４ 玉軸受用保持器（転がり軸受用保持器）
１５ａ，１５ｂ，２５ａ，２５ｂ 保持器分割片
１６ 第１ポケット部
１７ 第２ポケット部
１８ 一対の爪部
１８ａ 係合凸部（係合部）
１９ 一対の溝部
１９ａ 係合凹部（被係合部） 10 Ball bearings (rolling bearings)
11 Inner ring 12 Outer ring 13 Ball (rolling element)
14,24 Ball bearing cage (Rolling bearing cage)
15a, 15b, 25a, 25b Cage division piece 16 1st pocket part 17 2nd pocket part 18 A pair of nail | claw part 18a Engagement convex part (engagement part)
19 A pair of groove parts 19a Engagement recessed part (engaged part)

Claims (3)

軸方向に分割された一対の保持器分割片を備え、複数の転動体を円周方向に転動可能に保持する円環状の転がり軸受用保持器であって、
前記一対の保持器分割片には、前記転動体を保持するための一対の爪部を形成した第１ポケット部が円周方向に複数配置され、
前記一対の保持器分割片の前記第１ポケット部間には、相手側の前記保持器分割片の前記一対の爪部を嵌合させるための一対の溝部を形成した第２ポケット部が配置され、
前記一対の爪部には、係合部が形成され、
前記一対の溝部には、前記係合部と係合する被係合部が形成されることを特徴とする転がり軸受用保持器。 An annular rolling bearing retainer that includes a pair of cage split pieces that are divided in the axial direction and holds a plurality of rolling elements so as to be able to roll in the circumferential direction,
In the pair of cage split pieces, a plurality of first pocket portions formed with a pair of claw portions for holding the rolling elements are arranged in the circumferential direction,
Between the first pocket portions of the pair of cage split pieces, a second pocket portion having a pair of groove portions for fitting the pair of claw portions of the counterpart cage split piece is disposed. ,
An engagement portion is formed on the pair of claws,
A cage for a rolling bearing, wherein the pair of grooves are formed with engaged portions that engage with the engaging portions. 軸方向に分割された一対の保持器分割片を備え、複数の転動体を円周方向に転動可能に保持する円環状の転がり軸受用保持器であって、
一方の前記保持器分割片には、前記転動体を保持するための一対の爪部を形成した第１ポケット部が円周方向に複数配置され、
他方の前記保持器分割片には、前記一対の爪部を嵌合させるための一対の溝部を形成した第２ポケット部が円周方向に複数配置され、
前記一対の爪部には、係合部が形成され、
前記一対の溝部には、前記係合部と係合する被係合部が形成されることを特徴とする転がり軸受用保持器。 An annular rolling bearing retainer that includes a pair of cage split pieces divided in the axial direction and holds a plurality of rolling elements so as to be able to roll in the circumferential direction,
In one of the cage division pieces, a plurality of first pocket portions formed with a pair of claw portions for holding the rolling elements are arranged in the circumferential direction,
A plurality of second pocket portions formed with a pair of grooves for fitting the pair of claw portions are arranged in the circumferential direction in the other cage split piece,
An engagement portion is formed on the pair of claws,
A cage for a rolling bearing, wherein the pair of grooves are formed with engaged portions that engage with the engaging portions. 外輪と内輪との間に複数の転動体が保持器を介して円周方向に転動可能に配設される転がり軸受であって、
前記保持器として、請求項１又は２に記載の転がり軸受用保持器を使用することを特徴とする転がり軸受。 A rolling bearing in which a plurality of rolling elements are disposed between an outer ring and an inner ring so as to be able to roll in a circumferential direction via a cage,
A rolling bearing using the rolling bearing retainer according to claim 1 or 2 as the retainer.
JP2006297760A 2006-11-01 2006-11-01 Roller bearing cage and rolling bearing Pending JP2008115903A (en)

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US9366292B2 (en) 2011-05-13 2016-06-14 Ntn Corporation Retainer for ball bearing, and ball bearing
WO2012157411A1 (en) * 2011-05-13 2012-11-22 Ntn株式会社 Retainer for ball bearing, and ball bearing
JP2012255479A (en) * 2011-06-08 2012-12-27 Ntn Corp Retainer for ball bearing, and ball bearing
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CN107575468B (en) * 2016-07-05 2021-01-05 株式会社捷太格特 Rolling bearing
CN116324195A (en) * 2020-09-11 2023-06-23 日本精工株式会社 Resin cages for ball bearings and ball bearings
CN114370454A (en) * 2020-10-16 2022-04-19 斯凯孚公司 Bearing units provided with high-performance retaining devices
CN120100813A (en) * 2025-05-08 2025-06-06 人本股份有限公司 Deep groove ball bearings for electric compressors of new energy vehicles

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