JPH0538418U - Cage made of synthetic resin for spherical roller bearings - Google Patents

Cage made of synthetic resin for spherical roller bearings

Info

Publication number
JPH0538418U
JPH0538418U JP088272U JP8827291U JPH0538418U JP H0538418 U JPH0538418 U JP H0538418U JP 088272 U JP088272 U JP 088272U JP 8827291 U JP8827291 U JP 8827291U JP H0538418 U JPH0538418 U JP H0538418U
Authority
JP
Japan
Prior art keywords
pocket
notch
axial direction
radius
synthetic resin
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.)
Pending
Application number
JP088272U
Other languages
Japanese (ja)
Inventor
浩一 奥上
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
Original Assignee
NTN Corp
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 filed Critical NTN Corp
Priority to JP088272U priority Critical patent/JPH0538418U/en
Publication of JPH0538418U publication Critical patent/JPH0538418U/en
Pending 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
    • F16C33/46—Cages for rollers or needles
    • F16C33/4617—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages
    • F16C33/4623—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages formed as one-piece cages, i.e. monoblock cages
    • F16C33/4635—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages formed as one-piece cages, i.e. monoblock cages made from plastic, e.g. injection moulded window cages
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/46—Cages for rollers or needles
    • F16C33/467—Details of individual pockets, e.g. shape or roller retaining means
    • F16C33/4676—Details of individual pockets, e.g. shape or roller retaining means of the stays separating adjacent cage pockets, e.g. guide means for the bearing-surface of the rollers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • 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
    • F16C19/38—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 two or more rows of rollers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
    • F16C23/06—Ball or roller bearings
    • F16C23/08—Ball or roller bearings self-adjusting
    • F16C23/082—Ball or roller bearings self-adjusting by means of at least one substantially spherical surface
    • F16C23/086—Ball or roller bearings self-adjusting by means of at least one substantially spherical surface forming a track for rolling elements

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Support Of The Bearing (AREA)

Abstract

(57)【要約】 【目的】 自動調心ころ軸受の合成樹脂製保持器の強度
を向上させる。 【構成】 柱１２間に設けられたポケット１３の隅部に
上記柱１２を切り込む切欠部２０を設ける。切欠部２０
にポケット端面２２が接線にて連続されるアール状内面
２１を設ける。このアール状内面２１の半径を切欠部２
０の深さより大きくして軸受使用中にポケット１３の隅
部に応力が集中するのを防止する。 (57) [Summary] [Purpose] To improve the strength of cages made of synthetic resin for spherical roller bearings. [Structure] A notch 20 for cutting the pillar 12 is provided at a corner of a pocket 13 provided between the pillars 12. Notch 20
Is provided with a rounded inner surface 21 where the pocket end surface 22 is tangentially continuous. The radius of this rounded inner surface 21 is defined by the cutout 2
A depth greater than 0 prevents stress from concentrating in the corners of the pocket 13 during use of the bearing.

Description

【考案の詳細な説明】[Detailed description of the device]

【０００１】[0001]

【産業上の利用分野】[Industrial applications]

この考案は、自動調心ころ軸受用の合成樹脂製保持器に関するものである。 The present invention relates to a synthetic resin cage for spherical roller bearings.

【０００２】[0002]

【従来の技術】[Prior Art]

この種の保持器として、図９および図１０に示したものが従来から知られてい る。この保持器は、軸方向で対向する一対の環状板部３０間の周方向に柱３１を 等間隔に形成して隣接する柱３１間に球面ころ３２を収納するポケット３３を設 けてある。 As a retainer of this type, the retainers shown in FIGS. 9 and 10 have been conventionally known. In this cage, columns 31 are formed at equal intervals in the circumferential direction between a pair of annular plate portions 30 facing each other in the axial direction, and pockets 33 for accommodating spherical rollers 32 are provided between adjacent columns 31.

【０００３】 ここで、柱３１には、周方向で対向する側面３４を図示のように、球面ころ３ ２の外周に沿う凹曲面としたものや、特開平３−３３５１０号公報に記載されて いるように、上記側面３４の軸方向両端部を平面と円錐面の複合面で形成したも のがある。Here, as shown in the figure, the pillars 31 have side surfaces 34 facing each other in the circumferential direction, which are concave curved surfaces along the outer circumference of the spherical roller 32, and are described in Japanese Patent Laid-Open No. 3-33510. As described above, there is a structure in which both axial end portions of the side surface 34 are formed as a composite surface of a flat surface and a conical surface.

【０００４】 柱３１の側面形状が異なるいずれの合成樹脂製保持器も、図９に示すように、 ポケット３３の隅部にアール面３５を形成して隅部の強度を高めるようにしてい る。As shown in FIG. 9, in any cage made of synthetic resin in which the side shape of the pillar 31 is different, the rounded surface 35 is formed at the corner of the pocket 33 to increase the strength of the corner.

【０００５】[0005]

【考案が解決しようとする課題】[Problems to be solved by the device]

ところで、ポケット３３の隅部に形成するアール面３５は、球面ころ３２の両 端に設けられた面取り３６との干渉をさけるため、大きな半径とすることができ ず、上記面取り３６より小さな径とされている。 By the way, since the rounded surface 35 formed at the corner of the pocket 33 avoids interference with the chamfers 36 provided at both ends of the spherical roller 32, a large radius cannot be obtained, and a radius smaller than that of the chamfer 36 is used. Has been done.

【０００６】 このため、軸受の使用中にポケット３３の隅部に応力が集中して隅部から破損 し易く、特に、保持器が大きくなった場合、環状板部３０や柱３１の肉厚に比べ て隅部のアールが小さくなり、保持器の強度上問題がある。Therefore, during use of the bearing, stress concentrates on the corners of the pockets 33 and is easily damaged from the corners. Especially, when the cage becomes large, the wall thickness of the annular plate portion 30 and the pillars 31 is increased. Compared with this, the radius of the corner is smaller, and there is a problem in the strength of the cage.

【０００７】 この考案の課題は、合成樹脂製保持器の強度を高めることである。An object of this invention is to increase the strength of a synthetic resin cage.

【０００８】[0008]

【課題を解決するための手段】[Means for Solving the Problems]

上記の課題を解決するために、この考案においては、軸方向で対向する一対の 環状板部間の周方向に柱を等間隔に設けて隣接する柱間に球面ころ収納用のポケ ットを形成し、各柱の幅寸法が軸方向中央部から両端に向けて次第に広くされた 自動調心ころ軸受用の合成樹脂製保持器において、前記各ポケットの隅部に上記 柱を切り込む切欠部を形成し、その切欠部にポケットの軸方向で対向する端面が 接線にて接続されるアール状内面を設け、このアール状内面の半径を切欠部の深 さ以上とし、柱の軸方向両端における切欠部間の幅寸法を柱の軸方向中央部の幅 寸法より大きくした構成を採用したのである。 In order to solve the above-mentioned problems, in the present invention, columns are provided at equal intervals in the circumferential direction between a pair of annular plate portions opposed to each other in the axial direction, and a pocket for storing a spherical roller is provided between adjacent columns. In a cage made of synthetic resin for spherical roller bearings in which the width dimension of each column is gradually widened from the central part in the axial direction toward both ends, a notch is formed at the corner of each pocket to cut the column. The cutout is provided with a rounded inner surface whose end faces that face each other in the axial direction of the pocket are connected by a tangent line. The width between the parts is larger than the width of the central part of the column in the axial direction.

【０００９】[0009]

【作用】[Action]

上記のように、柱部を切り込む切欠部にアール状内面を設けることにより、そ のアール状内面として半径の大きいものを形成することができ、ポケットの隅部 に応力が集中するのを防止することができる。 As described above, by providing the rounded inner surface in the cutout portion that cuts the pillar portion, a large radius can be formed as that rounded inner surface, and stress is prevented from concentrating at the corners of the pocket. be able to.

【００１０】[0010]

【実施例】【Example】

以下、この考案の実施例を図１乃至図８に基づいて説明する。図１に示すよう に、自動調心ころ軸受は、外輪１と内輪２との間に球面ころ３を複列に組込み、 各列の球面ころ３を合成樹脂から成る一対の保持器１０で支持している。 An embodiment of the present invention will be described below with reference to FIGS. As shown in FIG. 1, the spherical roller bearing has a pair of spherical rollers 3 between the outer ring 1 and the inner ring 2, and the spherical rollers 3 of each row are supported by a pair of cages 10 made of synthetic resin. is doing.

【００１１】 保持器１０は、図３に示すように、軸方向で対向する一対の環状板部１１、１ １を有し、その環状板部１１、１１間の周方向に柱１２を等間隔に形成して隣接 する柱１２間に前記球面ころ３を収納するポケット１３を設けた構成とされてい る。As shown in FIG. 3, the retainer 10 has a pair of annular plate portions 11, 11 opposed to each other in the axial direction, and columns 12 are equally spaced in the circumferential direction between the annular plate portions 11, 11. And a pocket 13 for accommodating the spherical roller 3 is provided between adjacent columns 12.

【００１２】 柱１２の周方向で対向する側面１４の軸方向中央部には、図２、図３および図 ５で示すように、球面ころ３のピッチ円ＰＣＤより外側に平面１５が設けられ、 その平面１５の内径縁に連続して円筒面１６が形成されている。As shown in FIGS. 2, 3 and 5, a flat surface 15 is provided outside the pitch circle PCD of the spherical roller 3 at the central portion in the axial direction of the side surfaces 14 that face each other in the circumferential direction of the column 12. A cylindrical surface 16 is formed continuously with the inner peripheral edge of the flat surface 15.

【００１３】 また、上記側面１４の軸方向両端部には、図６に示すように、環状板部１１に 向けて内方傾斜する一対の傾斜面１７が形成され、各傾斜面１７は、軸受の回転 時に球面ころ３の外周一部と点ａで接触して球面ころ３を案内すると共に、球面 ころ３のスキューを防止する。その傾斜面１７の外径側に設けた突起１８は、球 面ころ３がポケット１３の外径側に抜け出るのを防止する。Further, as shown in FIG. 6, a pair of inclined surfaces 17 that incline inward toward the annular plate portion 11 are formed at both ends of the side surface 14 in the axial direction. During rotation, the spherical roller 3 is guided by contacting a part of the outer periphery of the spherical roller 3 at a point a, and the skew of the spherical roller 3 is prevented. The protrusion 18 provided on the outer diameter side of the inclined surface 17 prevents the spherical roller 3 from slipping out to the outer diameter side of the pocket 13.

【００１４】 上記各傾斜面１７の内径側には図３に示すように、円錐面１９が設けられ、こ の円錐面１９によってポケット１３の内径側に球面ころ３が抜け出るのが防止さ れる。As shown in FIG. 3, a conical surface 19 is provided on the inner diameter side of each of the inclined surfaces 17, and the conical surface 19 prevents the spherical roller 3 from slipping out to the inner diameter side of the pocket 13.

【００１５】 上記のように、柱１２の側面１４における軸方向の両端部を傾斜面１７と円錐 面１９の複合面で形成したことにより、ピッチ円ＰＣＤの接線で柱１２を切断し た際の断面形状は、図６に示すように、軸方向の中央部で幅寸法が小さく、軸方 向両端に至るに従って次第に大きくなる。As described above, by forming both ends in the axial direction of the side surface 14 of the pillar 12 by the compound surface of the inclined surface 17 and the conical surface 19, the pillar 12 can be cut at the tangent line of the pitch circle PCD. As shown in FIG. 6, the cross-sectional shape has a small width dimension at the central portion in the axial direction and gradually increases toward both ends in the axial direction.

【００１６】 前記ポケット１３の隅部には、図７に示すように、柱１２を切り込む切欠部２ ０が形成され、その切欠部２０にアール状内面２１が設けられている。アール状 内面２１とポケット１３の軸方向で対向する端面２２は接線にて滑らかに連続し ている。As shown in FIG. 7, a notch 20 for cutting the column 12 is formed at a corner of the pocket 13, and the notch 20 is provided with a rounded inner surface 21. An end surface 22 of the rounded inner surface 21 and the pocket 13 that face each other in the axial direction are smoothly continuous with a tangent line.

【００１７】 ここで、アール状内面２１の半径をｒ、切欠部２０の深さをａ、柱１２の軸方 向中央部における幅寸法をｂ、柱の軸方向両端部における切欠部２０間の寸法を ｃとすると、ｒ≧ａ、ｃ＞ｂとされている。Here, the radius of the radius-shaped inner surface 21 is r, the depth of the notch 20 is a, the width dimension of the column 12 at the central portion in the axial direction is b, and between the notches 20 at both axial ends of the column. If the dimension is c, then r ≧ a and c> b.

【００１８】 上記のように、ポケット１３の隅部に切欠部２０を設けたことによって球面こ ろ３の面取り４がポケット１３の隅に干渉するのを防止することができ、その切 欠部２０にポケット１３の端面が接線にて連続されるアール状内面２１を形成し たことにより、そのアール状内面２１の半径を大きくとることができる。このた め、ポケット１３の隅部に応力が集中するのを防止することができ、保持器の強 度を向上させることができる。As described above, by providing the notch 20 at the corner of the pocket 13, it is possible to prevent the chamfer 4 of the spherical core 3 from interfering with the corner of the pocket 13, and the notch 20. By forming the rounded inner surface 21 in which the end surface of the pocket 13 is tangentially continuous, the radius of the rounded inner surface 21 can be increased. Therefore, it is possible to prevent stress from concentrating on the corners of the pocket 13 and improve the strength of the cage.

【００１９】 図７に示す実施例では、切欠部２０の内側全体をアール状内面２１としたが、 図８に示すように、アール状内面２１と、その端に連続する平面２３および傾斜 面２４で形成してもよい。この場合も、アール状内面２１は、ポケット１３の端 面２２と接線にて接続されるようにすると共に、その半径ｒは、ｒ≧ａとする。In the embodiment shown in FIG. 7, the entire inside of the cutout portion 20 has the rounded inner surface 21, but as shown in FIG. 8, the rounded inner surface 21, the flat surface 23 and the inclined surface 24 continuous to the end thereof. You may form. Also in this case, the radius-shaped inner surface 21 is tangentially connected to the end surface 22 of the pocket 13 and the radius r is r ≧ a.

【００２０】[0020]

【考案の効果】[Effect of the device]

以上のように、この考案に係る保持器においては、ポケットの隅部に切欠部を 設けて球面ころの面取りが干渉するのを防止し、その切欠部にポケットの端面が 接線にて連続されるアール状内面を設けたことにより、そのアール状内面の半径 を大きくとることができ、軸受使用中にポケットの隅部に応力が集中するのを防 止することができる。 As described above, in the cage according to the present invention, the notches are provided at the corners of the pocket to prevent the chamfering of the spherical rollers from interfering with each other, and the end face of the pocket is tangentially continuous to the notch. By providing the rounded inner surface, the radius of the rounded inner surface can be made large, and it is possible to prevent the stress from concentrating at the corners of the pocket during use of the bearing.

【００２１】 また、切欠部は、柱のみを切り込む構成であるため、環状板部の強度低下はな く、しかも切欠部の深さは、柱の両端部における切欠部間の寸法が柱中央部の幅 寸法より小さくならない程度の深さのものであるため柱の強度低下も小さく、ト ータルとして保持器の強度を向上させることができる。Further, since the notch portion is configured to cut only the column, the strength of the annular plate portion does not decrease, and the depth of the notch portion is such that the dimension between the notch portions at both ends of the column is the center portion of the column. Since it has a depth that does not become smaller than the width dimension of the column, the strength of the column does not decrease so much and the cage can be improved in strength as a total.

【図面の簡単な説明】[Brief description of drawings]

【図１】この考案に係る保持器を用いた自動調心ころ軸
受の断面図FIG. 1 is a sectional view of a self-aligning roller bearing using a cage according to the present invention.

【図２】同上保持器の断面図FIG. 2 is a sectional view of the same cage.

【図３】同上保持器の一部分を示す斜視図FIG. 3 is a perspective view showing a part of the same cage.

【図４】図２のIV−IV線に沿った断面図FIG. 4 is a sectional view taken along line IV-IV in FIG.

【図５】図２のＶ−Ｖ線に沿った断面図5 is a sectional view taken along line VV of FIG.

【図６】図２のVI−VI線に沿った断面図6 is a sectional view taken along line VI-VI of FIG.

【図７】同上ポケットの隅部を拡大して示す断面図FIG. 7 is an enlarged sectional view showing a corner portion of the same pocket.

【図８】同上保持器の他の例を示す断面図FIG. 8 is a sectional view showing another example of the same cage.

【図９】従来の保持器を示す平面図FIG. 9 is a plan view showing a conventional cage.

【図１０】同上の断面図FIG. 10 is a sectional view of the above.

【符号の説明】[Explanation of symbols]

１１ 環状板部 １２ 柱 １３ ポケット ２０ 切欠部 ２１ アール状内面 ２２ 端面 11 Annular Plate Part 12 Pillar 13 Pocket 20 Notch 21 R-Shaped Inner Surface 22 End Face

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項１】 軸方向で対向する一対の環状板部間の周
方向に柱を等間隔に設けて隣接する柱間に球面ころ収納
用のポケットを形成し、各柱の幅寸法が軸方向中央部か
ら両端に向けて次第に広くされた自動調心ころ軸受用の
合成樹脂製保持器において、前記各ポケットの隅部に上
記柱を切り込む切欠部を形成し、その切欠部にポケット
の軸方向で対向する端面が接線にて接続されるアール状
内面を設け、このアール状内面の半径が切欠部の深さ以
上とされ、柱の軸方向両端における切欠部間の幅寸法が
柱の軸方向中央部の幅寸法より大きくされていることを
特徴とする自動調心ころ軸受の合成樹脂製保持器。1. A pocket for accommodating spherical rollers is formed between adjacent pillars at equal intervals in the circumferential direction between a pair of annular plate portions facing each other in the axial direction, and the width dimension of each pillar is the axial direction. In a cage made of synthetic resin for a self-aligning roller bearing that is gradually widened from the center to both ends, a notch for cutting the pillar is formed at a corner of each pocket, and the notch has an axial direction of the pocket. A radius-shaped inner surface whose opposite end faces are connected by a tangent line is provided, and the radius of this radius-shaped inner surface is greater than or equal to the depth of the notch, and the width dimension between the notches at both axial ends of the column is the axial direction of the column. A cage made of synthetic resin for spherical roller bearings, characterized in that it is made larger than the width dimension of the central portion.
JP088272U 1991-10-28 1991-10-28 Cage made of synthetic resin for spherical roller bearings Pending JPH0538418U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP088272U JPH0538418U (en) 1991-10-28 1991-10-28 Cage made of synthetic resin for spherical roller bearings

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP088272U JPH0538418U (en) 1991-10-28 1991-10-28 Cage made of synthetic resin for spherical roller bearings

Publications (1)

Publication Number Publication Date
JPH0538418U true JPH0538418U (en) 1993-05-25

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Family Applications (1)

Application Number Title Priority Date Filing Date
JP088272U Pending JPH0538418U (en) 1991-10-28 1991-10-28 Cage made of synthetic resin for spherical roller bearings

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JP (1) JPH0538418U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007269117A (en) * 2006-03-30 2007-10-18 Mitsubishi Fuso Truck & Bus Corp Car body structure
WO2008029737A1 (en) * 2006-09-06 2008-03-13 Ntn Corporation Ball bearing

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0313619U (en) * 1989-06-23 1991-02-12

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0313619U (en) * 1989-06-23 1991-02-12

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007269117A (en) * 2006-03-30 2007-10-18 Mitsubishi Fuso Truck & Bus Corp Car body structure
WO2008029737A1 (en) * 2006-09-06 2008-03-13 Ntn Corporation Ball bearing

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