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JP2003343571A - Synthetic resin cage - Google Patents

Synthetic resin cage

Info

Publication number
JP2003343571A
JP2003343571A JP2002152262A JP2002152262A JP2003343571A JP 2003343571 A JP2003343571 A JP 2003343571A JP 2002152262 A JP2002152262 A JP 2002152262A JP 2002152262 A JP2002152262 A JP 2002152262A JP 2003343571 A JP2003343571 A JP 2003343571A
Authority
JP
Japan
Prior art keywords
engagement
synthetic resin
cage
annular
annular bodies
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2002152262A
Other languages
Japanese (ja)
Other versions
JP4340419B2 (en
Inventor
Tsutomu Mizutani
力 水谷
Kiyoshi Yamamoto
喜芳 山本
Shinji Obara
伸二 小原
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NTN Corp
Nakanishi Metal Works Co Ltd
Original Assignee
NTN Corp
Nakanishi Metal Works Co Ltd
NTN Toyo Bearing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NTN Corp, Nakanishi Metal Works Co Ltd, NTN Toyo Bearing Co Ltd filed Critical NTN Corp
Priority to JP2002152262A priority Critical patent/JP4340419B2/en
Priority to DE10324103A priority patent/DE10324103B4/en
Publication of JP2003343571A publication Critical patent/JP2003343571A/en
Application granted granted Critical
Publication of JP4340419B2 publication Critical patent/JP4340419B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/38—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
    • F16C43/00—Assembling bearings
    • F16C43/04—Assembling rolling-contact bearings
    • F16C43/06—Placing rolling bodies in cages or bearings
    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2300/00—Application independent of particular apparatuses
    • F16C2300/20—Application independent of particular apparatuses related to type of movement
    • F16C2300/22—High-speed rotation

Landscapes

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

Abstract

(57)【要約】 【課題】 コストの安い組立ての容易な合成樹脂製保持
器を提供することである。 【解決手段】 ２枚の合成樹脂製環状体１の一側面に半
球状のポケット２を周方向に等間隔に形成し、隣接する
ポケット２間の結合部４に係合孔５と係合爪６とを形成
して、２枚の環状体１を同一形状とし、１種類の形成用
金型で成形できるようにする。２枚の環状体１を係合孔
５に対する係合爪６の係合によって結合して合成樹脂製
の保持器を組立てる。 [PROBLEMS] To provide a cage made of a synthetic resin which is easy to assemble at low cost. SOLUTION: Hemispherical pockets 2 are formed on one side surface of two synthetic resin annular bodies 1 at equal intervals in the circumferential direction, and engaging holes 5 and engaging claws are formed in a connecting portion 4 between adjacent pockets 2. 6 are formed so that the two annular bodies 1 have the same shape, and can be formed with one type of forming mold. The two annular bodies 1 are joined by engagement of the engagement claws 6 with the engagement holes 5 to assemble a cage made of synthetic resin.

Description

【発明の詳細な説明】 【０００１】 【発明の属する技術分野】この発明は、主として高速回
転用玉軸受内に組み込まれる合成樹脂製保持器に関する
ものである。 【０００２】 【従来の技術】高速回転用玉軸受の合成樹脂製保持器と
して、実開平６−１８４８号公報に記載されたものが従
来から知られている。この公報に記載された合成樹脂製
保持器においては、リング状の保持器本体の一側面に対
向一対の爪を周方向に等間隔に設け、対向一対の爪間に
ボール保持用のポケットを形成し、隣接するポケット間
の隣接する爪間に連結脚を設け、その連結脚にリング状
の蓋体を連結している。 【０００３】上記合成樹脂製保持器においては、保持器
本体に蓋体を連結することによって、保持器本体の外径
方向への変形を防止することができるため、剛性の高い
保持器を得ることができ、高速回転用として使用するこ
とができるという特徴を有する。 【０００４】 【発明が解決しようとする課題】ところで、上記従来の
合成樹脂製保持器においては、保持器本体の成形用金型
と、蓋体の成形用金型の２種類の成形金型を必要とする
ため、合成樹脂製保持器のコストが高く、そのコストを
低減化を図るうえにおいて改善すべき点が残されてい
る。 【０００５】また、保持器本体と蓋体をそれぞれ別々に
管理する必要があるため、管理工数が増え、その管理工
数を少なくするうえにおいても改善すべき点が残されて
いる。 【０００６】この発明の課題は、高速回転用に使用する
ことができるコストの安い組立ての容易な合成樹脂製保
持器を提供することである。 【０００７】 【課題を解決するための手段】上記の課題を解決するた
めに、この発明においては、２枚の合成樹脂製環状体か
ら成り、各環状体の互いに衝合される一側面にボールの
外周に沿う複数の半球状ポケットを周方向に等間隔に形
成し、隣接するポケット間の結合部には係合孔と、他方
の環状体の係合孔に対する挿入によって係合状態とされ
る係合爪とを設け、前記係合爪を他方の環状体の係合孔
に係合させて２枚の環状体を連結した構成を採用したの
である。 【０００８】上記のように、環状体の結合部に係合爪と
係合孔とを形成することによって、ポケット数が偶数で
あっても奇数であっても２枚の環状体を同一の形状とす
ることができる。このため、成形用金型は１種類でよ
く、合成樹脂製保持器のコストの低減を図ることができ
ると共に、部品の管理も容易である。 【０００９】 【発明の実施の形態】以下、この発明の実施の形態を図
面に基づいて説明する。図３および４に示すように、こ
の発明に係る保持器は、２枚の環状体１、１から成り、
各環状体１は合成樹脂により成形されて同一の形状とさ
れている。 【００１０】図１および図２に示すように、環状体１は
平面形状が波形とされ、その一側面にはボールＢの外周
に沿う半球状のポケット２が周方向に等間隔に設けられ
ている。 【００１１】また、環状体１には、隣接するポケット２
間に形成された結合部４に両側面に貫通する係合孔５
と、他方の環状体１に形成された上記係合孔５に挿入さ
れる係合爪６とが形成されている。 【００１２】係合孔５の内周には係合段部５ａが形成さ
れ、一方、係合爪６の先端部にはその係合段部５ａに係
合される鈎部６ａが設けられている。 【００１３】７は、結合部４の他側に形成された平坦面
を示す。 【００１４】２枚の環状体１、１は、半球状ポケット２
が対向するよう組み合わせられ、係合孔５に対する係合
爪６の係合によって結合一体化され、図４に示す保持器
Ａが組み立てられる。 【００１５】ここで、保持器Ａの組立ては、外輪と内輪
間に複数のボールを組み込んだのち、その両輪の両側方
から両輪間に形成される環状空間内に２枚の環状体１、
１を嵌合して、係合孔５に係合爪６を挿入する。 【００１６】このように、係合孔５に対する係合爪６の
係合によって保持器Ａを組み立てることができるため、
組立てが容易であると共に、係合孔５と係合爪６の係合
によって環状体１の外径方向の変形を防止することがで
きるため、剛性の高い保持器Ａを得ることができ、高速
回転用として使用することができる。 【００１７】また、保持器Ａを形成する２枚の環状体１
は同一形状であるため、１種類の成形用金型で成形する
ことができ、コストの安い保持器Ａを得ることができる
と共に、環状体１の管理も容易である。 【００１８】実施の形態で示すように、係合爪６を、そ
の先端６ｂが結合部４の平坦面７より出張らない寸法関
係とすることにより、保持器Ａの組立て時、一方の環状
体１の平坦面７を受け、他方の環状体１の平坦面７を押
すことによって保持器Ａを容易に組立てることができ
る。 【００１９】 【発明の効果】以上のように、この発明においては、保
持器を形成する２枚の環状体が同一形状であるため、１
種類の成形用金型により成形することができ、コストの
安い保持器を得ることができる。 【００２０】また、２枚の環状体は係合孔と係合爪の係
合によって結合一体化されるため、組立てが容易である
と共に、外径方向に変形することが少ない剛性の高い保
持器を得ることができ、高速回転用として使用すること
ができる。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a synthetic resin cage mainly incorporated in a ball bearing for high speed rotation. 2. Description of the Related Art As a synthetic resin cage for a ball bearing for high speed rotation, a cage described in Japanese Utility Model Laid-Open No. 6-1848 has been known. In the synthetic resin cage described in this publication, a pair of opposed claws are provided at equal intervals in the circumferential direction on one side surface of a ring-shaped cage body, and a ball holding pocket is formed between the opposed pair of claws. A connecting leg is provided between adjacent claws between adjacent pockets, and a ring-shaped lid is connected to the connecting leg. In the above-mentioned synthetic resin cage, since a lid body can be connected to the cage body to prevent deformation of the cage body in the outer diameter direction, a highly rigid cage can be obtained. And can be used for high-speed rotation. In the above conventional synthetic resin cage, there are two types of molding dies: a molding die for the cage body and a molding die for the lid. Since it is necessary, the cost of the synthetic resin cage is high, and there are still points to be improved in order to reduce the cost. Further, since it is necessary to manage the cage main body and the lid separately from each other, the number of management man-hours increases, and there are still points to be improved in reducing the man-hours for management. An object of the present invention is to provide a synthetic resin cage that can be used for high-speed rotation and can be easily assembled at low cost. In order to solve the above-mentioned problems, in the present invention, a ball is formed on one side face of each annular body, which is composed of two synthetic resin annular bodies. A plurality of hemispherical pockets are formed at equal intervals in the circumferential direction along the outer periphery of the inner wall, and the coupling portion between the adjacent pockets is brought into an engagement state by insertion into the engagement hole and the engagement hole of the other annular body. An engagement claw is provided, and the engagement claw is engaged with the engagement hole of the other annular body to connect the two annular bodies. As described above, by forming the engaging claw and the engaging hole in the coupling portion of the annular body, the two annular bodies can be formed in the same shape regardless of whether the number of pockets is even or odd. It can be. For this reason, only one type of molding die may be used, the cost of the synthetic resin cage can be reduced, and the management of the parts is easy. DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. As shown in FIGS. 3 and 4, the cage according to the present invention includes two annular bodies 1, 1,
Each annular body 1 is formed of a synthetic resin and has the same shape. As shown in FIGS. 1 and 2, the annular body 1 has a corrugated planar shape, and hemispherical pockets 2 along the outer periphery of the ball B are provided at equal intervals in the circumferential direction on one side surface thereof. Yes. The annular body 1 has an adjacent pocket 2.
Engagement holes 5 penetrating both side surfaces of the coupling portion 4 formed therebetween
And the engaging claw 6 inserted in the said engaging hole 5 formed in the other annular body 1 is formed. An engagement step portion 5a is formed on the inner periphery of the engagement hole 5, and a hook portion 6a that is engaged with the engagement step portion 5a is provided at the distal end portion of the engagement claw 6. Yes. Reference numeral 7 denotes a flat surface formed on the other side of the coupling portion 4. The two annular bodies 1 and 1 have a hemispherical pocket 2.
Are combined so as to be opposed to each other, and the retainer A shown in FIG. 4 is assembled. Here, the cage A is assembled by incorporating a plurality of balls between the outer ring and the inner ring, and then two annular bodies 1 in the annular space formed between both the wheels from both sides.
1 is engaged, and the engaging claw 6 is inserted into the engaging hole 5. As described above, the cage A can be assembled by the engagement of the engagement claw 6 with respect to the engagement hole 5.
Assembling is easy, and deformation of the annular body 1 in the outer diameter direction can be prevented by engagement of the engagement hole 5 and the engagement claw 6, so that a highly rigid cage A can be obtained, and high speed Can be used for rotation. Further, the two annular bodies 1 forming the cage A
Since they have the same shape, they can be molded with one type of molding die, a low-cost cage A can be obtained, and the annular body 1 can be easily managed. As shown in the embodiment, when the retainer A is assembled, when the retainer A is assembled, the engaging claw 6 has a dimensional relationship in which the tip 6b does not travel from the flat surface 7 of the coupling portion 4. The cage A can be easily assembled by receiving one flat surface 7 and pressing the flat surface 7 of the other annular body 1. As described above, in the present invention, since the two annular members forming the cage have the same shape,
The cage can be molded by using various types of molding dies, and a low-cost cage can be obtained. Further, since the two annular bodies are combined and integrated by engagement of the engagement holes and the engagement claws, the assembly is easy and can be easily assembled and is not easily deformed in the outer diameter direction. Can be obtained and used for high-speed rotation.

【図面の簡単な説明】 【図１】この発明に係る保持器の成形用の環状体を示す
正面図 【図２】図１の一部分を示す断面図 【図３】２枚の環状体の一部分を示す分解斜視図 【図４】２枚の環状体より組立てられた保持器の一部分
を示す断面図 【符号の説明】 １ 環状体 ２ ポケット ４ 結合部 ５ 係合孔 ６ 係合爪BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view showing an annular body for molding a cage according to the present invention. FIG. 2 is a sectional view showing a part of FIG. 1. FIG. 3 is a part of two annular bodies. FIG. 4 is a cross-sectional view showing a part of a cage assembled from two annular bodies. DESCRIPTION OF SYMBOLS 1 annular body 2 pocket 4 coupling portion 5 engagement hole 6 engagement claw

フロントページの続き (72)発明者 山本 喜芳 大阪市北区天満橋３丁目３番５号 中西金 属工業株式会社内 (72)発明者 小原 伸二 大阪市北区天満橋３丁目３番５号 中西金 属工業株式会社内 Ｆターム(参考） 3J101 AA02 AA32 AA42 AA62 BA37 BA46 BA50 DA14 EA31 FA44Continued front page    (72) Inventor Yoshimoto Yamamoto             Nakanishi Gold, 3-5-5 Tenmabashi, Kita-ku, Osaka             Within the genus industry (72) Inventor Shinji Ohara             Nakanishi Gold, 3-5-5 Tenmabashi, Kita-ku, Osaka             Within the genus industry F-term (reference) 3J101 AA02 AA32 AA42 AA62 BA37                       BA46 BA50 DA14 EA31 FA44

Claims (1)

【特許請求の範囲】 【請求項１】 ２枚の合成樹脂製環状体から成り、各環
状体の互いに衝合される一側面にボールの外周に沿う複
数の半球状ポケットを周方向に等間隔に形成し、隣接す
るポケット間の結合部には係合孔と、他方の環状体の係
合孔に対する挿入によって係合状態とされる係合爪とを
設け、前記係合爪を他方の環状体の係合孔に係合させて
２枚の環状体を連結した合成樹脂製保持器。[Claims] [Claims] [Claim 1] It is composed of two synthetic resin annular bodies, and a plurality of hemispherical pockets along the outer circumference of the ball are equidistantly spaced in one circumferential side of each annular body An engagement hole and an engagement claw that is brought into an engagement state by being inserted into the engagement hole of the other annular body are provided at a joint portion between adjacent pockets, and the engagement claw is provided in the other annular shape. A synthetic resin cage in which two annular bodies are connected by engaging with an engagement hole of the body.
JP2002152262A 2002-05-27 2002-05-27 Synthetic resin cage Expired - Lifetime JP4340419B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2002152262A JP4340419B2 (en) 2002-05-27 2002-05-27 Synthetic resin cage
DE10324103A DE10324103B4 (en) 2002-05-27 2003-05-27 Resin cage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002152262A JP4340419B2 (en) 2002-05-27 2002-05-27 Synthetic resin cage

Publications (2)

Publication Number Publication Date
JP2003343571A true JP2003343571A (en) 2003-12-03
JP4340419B2 JP4340419B2 (en) 2009-10-07

Family

ID=29545394

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2002152262A Expired - Lifetime JP4340419B2 (en) 2002-05-27 2002-05-27 Synthetic resin cage

Country Status (2)

Country Link
JP (1) JP4340419B2 (en)
DE (1) DE10324103B4 (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005119073A1 (en) 2004-06-03 2005-12-15 Ntn Corporation Synthetic resin retainer and ball bearing using the same
JP2006226447A (en) * 2005-02-18 2006-08-31 Ntn Corp Synthetic resin cage and ball bearing
JP2006226430A (en) * 2005-02-18 2006-08-31 Ntn Corp Ball bearing
JP2007182968A (en) * 2006-01-10 2007-07-19 Ntn Corp Rolling bearing and cage for rolling bearing
CN100453836C (en) * 2004-06-03 2009-01-21 Ntn株式会社 Synthetic resin cage and ball bearing using the cage
CN102209854A (en) * 2008-11-13 2011-10-05 保罗海蒂诗有限及两合公司 Rolling bearing cage for a furniture pull-out guide
JP2013029179A (en) * 2011-07-29 2013-02-07 Ntn Corp Radial ball bearing
JP2016138617A (en) * 2015-01-28 2016-08-04 株式会社ジェイテクト Rolling bearing
CN106795915A (en) * 2014-11-04 2017-05-31 Ntn株式会社 Synthetic resin retainer and ball bearing
KR20170095586A (en) * 2016-02-15 2017-08-23 셰플러코리아(유) Cage for ball bearing
CN111779765A (en) * 2020-05-19 2020-10-16 上海涟屹轴承科技有限公司 Radial bearing structure for ship gearbox
US10914343B2 (en) 2016-10-21 2021-02-09 Ntn Corporation Ball bearing
CN115199651A (en) * 2022-07-11 2022-10-18 湖南珍珠轴承股份有限公司 Symmetrical buckle retainer and bearing

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US7703986B2 (en) 2004-06-03 2010-04-27 Ntn Corporation Synthetic resin retainer and ball bearing using such synthetic resin retainer
WO2005119073A1 (en) 2004-06-03 2005-12-15 Ntn Corporation Synthetic resin retainer and ball bearing using the same
JP2006226447A (en) * 2005-02-18 2006-08-31 Ntn Corp Synthetic resin cage and ball bearing
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CN102209854B (en) * 2008-11-13 2013-08-14 保罗海蒂诗有限及两合公司 Rolling bearing cage for furniture pull-out guide
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JP2016138617A (en) * 2015-01-28 2016-08-04 株式会社ジェイテクト Rolling bearing
KR20170095586A (en) * 2016-02-15 2017-08-23 셰플러코리아(유) Cage for ball bearing
KR101966194B1 (en) * 2016-02-15 2019-04-05 셰플러코리아(유) Cage for ball bearing
US10914343B2 (en) 2016-10-21 2021-02-09 Ntn Corporation Ball bearing
CN111779765A (en) * 2020-05-19 2020-10-16 上海涟屹轴承科技有限公司 Radial bearing structure for ship gearbox
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