JP2002089550A - Shell type needle roller bearing - Google Patents
Shell type needle roller bearingInfo
- Publication number
- JP2002089550A JP2002089550A JP2000279621A JP2000279621A JP2002089550A JP 2002089550 A JP2002089550 A JP 2002089550A JP 2000279621 A JP2000279621 A JP 2000279621A JP 2000279621 A JP2000279621 A JP 2000279621A JP 2002089550 A JP2002089550 A JP 2002089550A
- Authority
- JP
- Japan
- Prior art keywords
- outer ring
- flange
- seal
- roller
- mounting portion
- 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
Links
Landscapes
- Rolling Contact Bearings (AREA)
- Sealing Of Bearings (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、クロスジョイント
などに用いられるシェル形針状ころ軸受に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shell needle roller bearing used for a cross joint or the like.
【０００２】[0002]
【従来の技術】従来、図１１に示すように、クロスジョ
イントなどに用いられるシェル形針状ころ軸受３８は、
クロスジョイント３５におけるスパイダ３６のスパイダ
軸３７を軸受けするように用いられる。2. Description of the Related Art Conventionally, as shown in FIG. 11, a shell type needle roller bearing 38 used for a cross joint or the like is
It is used to support a spider shaft 37 of a spider 36 in the cross joint 35.
【０００３】図１２〜図１５に示すように、このシェル
形針状ころ軸受３８は、外輪３９内周面に保持器４０に
よって針状ころ４１が転動自在に支持され、保持器４０
（針状ころ４１）の抜け止めのために芯金４２付きのシ
ール部材４３を介して鍔部４４を後曲げ加工によって形
成している。[0003] As shown in FIGS. 12 to 15, in this shell-shaped needle roller bearing 38, a needle roller 41 is rotatably supported on an inner peripheral surface of an outer ring 39 by a retainer 40.
In order to prevent the (needle rollers 41) from coming off, the flange portion 44 is formed by back bending through a seal member 43 with a cored bar 42.
【０００４】この種のシェル形針状ころ軸受３８は、図
１２に示すようにまず外輪３９をコ字形に形成し焼き入
れを施すが、このとき、鍔部４４となる部分には浸炭防
止（以下「防炭」という）を施すか焼鈍しとしておくこ
とで未硬化部分としておく。そして、図１４に示すよう
に、保持器４０で針状ころ４１を保持させ、シール部材
４３を保持器４０にあてがった状態で、図１５に示すよ
うに、未硬化部分を折り曲げるようにして作製する。In this type of needle roller bearing 38 of the shell type, as shown in FIG. 12, an outer ring 39 is first formed in a U-shape and quenched. Hereafter, it is left as an uncured portion by applying or annealing. Then, as shown in FIG. 14, the needle rollers 41 are held by the retainer 40, and the uncured portion is bent as shown in FIG. 15 in a state where the seal member 43 is applied to the retainer 40. I do.
【０００５】[0005]
【発明が解決しようとする課題】上記従来のシェル形針
状ころ軸受３８では、製作の段階で行う防炭には多くの
手間を必要とし、防炭が不十分であった場合には、鍔部
４４を後曲げ加工する際に外輪３９に割れが発生するお
それがあり、また、防炭部分は強度的に不十分である。In the above-described conventional needle roller needle bearing 38, a lot of trouble is required for the carbon protection performed in the manufacturing stage. When the portion 44 is subjected to the post-bending process, there is a possibility that the outer ring 39 may be cracked, and the carbon-proof portion is insufficient in strength.
【０００６】そこで本発明は、上記課題を解決し得るシ
ェル形針状ころ軸受の提供を目的とする。Accordingly, an object of the present invention is to provide a shell-type needle roller bearing which can solve the above-mentioned problems.
【０００７】[0007]
【課題を解決するための手段】本発明における課題解決
手段は、外輪の内周面に沿って配置される複数個の針状
ころが環状の保持器で保持された状態で外輪のころ装着
部に装着され、前記保持器がころ装着部から抜け出るの
を防止するための抜け止め手段が外輪のころ挿入側に設
けられ、この抜け止め手段は、外輪のころ挿入側に一体
的に形成されて外輪を硬化する際に同時に硬化されると
ともに軸心に向けて外輪外側に傾斜する環状の鍔部と、
この鍔部と保持器の側部との間のシール装着部に装着さ
れる環状のシール部材とを備え、前記鍔部の内径はシー
ル部材の外径に対して小さく設定され、前記シール部材
は、前記保持器の側部から鍔部の裏面に渡るようにシー
ル装着部に装着される弾性変形可能な芯金を有してい
る。The object of the present invention is to provide a roller mounting portion for an outer ring in which a plurality of needle rollers arranged along the inner peripheral surface of an outer ring are held by an annular retainer. Is provided on the roller insertion side of the outer ring, and a retaining means for preventing the retainer from falling out of the roller mounting portion is provided on the roller insertion side of the outer ring. An annular flange portion that is simultaneously cured when the outer ring is cured and that is inclined outwardly of the outer ring toward the axis,
An annular seal member mounted on a seal mounting portion between the flange portion and a side portion of the retainer; an inner diameter of the flange portion is set to be smaller than an outer diameter of the seal member; An elastically deformable metal core is mounted on the seal mounting portion so as to extend from a side portion of the retainer to a back surface of the flange portion.
【０００８】上記構成において、シェル形の外輪を形成
する際、同時に鍔部を形成し、鍔部を含めて外輪全体を
硬化させ、保持器に針状ころを保持させた状態で保持器
をころ装着部に装着し、シール部材をシール装着部に装
着する。このとき、鍔部の内径はシール部材の外径より
も小さく形成されているので、シール部材をその弾性に
抗して変形させ、シール部材をシール装着部に装着す
る。シール部材がシール装着部に装着されると、シール
部材の弾性によってこの形状が復元し、シール部材がシ
ール装着部に嵌合する。そうすると、シール部材が保持
器および鍔部の内側に当接し、保持器が外輪に対して確
実に保持され、外輪内の潤滑剤の損失が抑えられる。ま
た、シェル形の外輪を形成する際、同時に鍔部を形成
し、鍔部を含めて外輪全体を硬化させるので鍔部の後曲
げ加工の必要がなく、後曲げ加工がないので、外輪に割
れが発生するのを防止できる。In the above structure, when forming the shell-shaped outer race, a flange is formed at the same time, the entire outer race including the flange is hardened, and the cage is rolled while the needle rollers are held in the cage. The seal member is mounted on the mounting portion, and the seal member is mounted on the seal mounting portion. At this time, since the inner diameter of the flange is formed smaller than the outer diameter of the seal member, the seal member is deformed against its elasticity, and the seal member is mounted on the seal mounting portion. When the seal member is mounted on the seal mounting portion, this shape is restored by the elasticity of the seal member, and the seal member is fitted into the seal mounting portion. Then, the seal member comes into contact with the inside of the retainer and the flange, and the retainer is securely held to the outer ring, so that the loss of the lubricant in the outer ring is suppressed. Also, when forming the shell-shaped outer ring, the flange is formed at the same time, and the entire outer ring including the flange is hardened. Can be prevented from occurring.
【０００９】また、外輪の内周面に沿って配置される複
数個の針状ころが環状の保持器で保持された状態で外輪
のころ装着部に装着され、前記保持器がころ装着部から
抜け出るのを防止するための抜け止め手段が外輪のころ
挿入側に設けられ、この抜け止め手段は、ころ装着部に
連続して形成されてころ装着部と同心のシール装着部
と、このシール装着部に装着されるシール部材と、外輪
のころ挿入側に形成されて外輪を硬化する際に同時に硬
化される鍔部とを有し、この鍔部は、シール挿入用開口
をシール装着部に対して径方向に偏心させることでその
一部を省くかもしくは低く設定されている。Further, a plurality of needle rollers arranged along the inner peripheral surface of the outer ring are mounted on the roller mounting portion of the outer ring while being held by an annular retainer, and the retainer is moved from the roller mounting portion. A retaining means for preventing slipping out is provided on the roller insertion side of the outer race. The retaining means is formed continuously with the roller mounting part, and has a seal mounting part concentric with the roller mounting part; A seal member mounted on the outer ring, and a flange formed on the roller insertion side of the outer ring and simultaneously hardened when the outer ring is hardened, and the flange has a seal insertion opening with respect to the seal mounting section. By eccentricity in the radial direction, a part thereof is omitted or set low.
【００１０】上記構成において、シェル形の外輪を形成
する際、同時に鍔部を形成し、鍔部を含めて外輪全体を
硬化させる。このとき、装着用開口を、ころ装着部およ
びシール装着部に対して偏心して形成することで、鍔部
は装着用開口の一部を除いた外周に形成されており、次
に、保持器に針状ころを保持させた状態で保持器をころ
装着部に装着する。続いて、シール部材を装着用開口か
らシール装着部に挿入するが、このとき、シール部材の
一方をシール装着部の一方、すなわち鍔部が高い方へ挿
入し、続いて、シール部材の他方をシール装着部の他方
へ挿入するようにする。In the above configuration, when forming the shell-shaped outer ring, a flange is formed at the same time, and the entire outer ring including the flange is hardened. At this time, by forming the mounting opening eccentrically with respect to the roller mounting portion and the seal mounting portion, the flange portion is formed on the outer periphery excluding a part of the mounting opening, and then the retainer is formed. Attach the cage to the roller mounting part while holding the needle rollers. Subsequently, the seal member is inserted into the seal mounting portion from the mounting opening. At this time, one of the seal members is inserted into one of the seal mounting portions, that is, the flange portion is higher, and then the other of the seal member is inserted. Insert it into the other part of the seal mounting part.
【００１１】装着用開口の直径はシール部材の直径に対
して小さく形成されているが、シール部材の一方をシー
ル装着部の一方へ挿入することで、鍔部にシール部材の
一方を保持した状態で順に他方へ向けて挿入する。この
ようにシール部材の一方をシール装着部の一方、すなわ
ち鍔部が高い方へ挿入し、続いて、シール部材の他方を
シール装着部の他方へ挿入するようにすることで容易に
シール部材を装着できるとともに、シール部材によって
保持器が外輪から抜けるのを確実に防止するとともに外
輪内の潤滑剤が漏れ出るのを防止でき、シェル形の外輪
を形成する際、同時に鍔部を形成し、鍔部を含めて外輪
全体を硬化させるので、鍔部の後曲げ加工の必要がな
い。Although the diameter of the mounting opening is smaller than the diameter of the seal member, one of the seal members is inserted into one of the seal mounting portions to hold one of the seal members in the flange portion. Insert in order toward the other. In this manner, one of the seal members is inserted into one of the seal mounting portions, that is, the flange portion is higher, and then the other of the seal members is inserted into the other of the seal mounting portions so that the seal member can be easily inserted. In addition to being able to be attached, the seal member can reliably prevent the retainer from coming off the outer ring and can prevent the lubricant in the outer ring from leaking out.When forming the shell-shaped outer ring, a flange portion is formed at the same time, Since the entire outer ring including the portion is hardened, there is no need to perform a rear bending process on the flange portion.
【００１２】[0012]
【発明の実施の形態】以下、本発明の実施の形態を、図
面に基づいて説明する。まず、本発明の実施の第一形態
に係るシェル形針状ころ軸受１を図１〜図４に基づいて
説明する。Embodiments of the present invention will be described below with reference to the drawings. First, a shell-shaped needle roller bearing 1 according to a first embodiment of the present invention will be described with reference to FIGS.
【００１３】図1に示すように、本発明の実施の第一形
態に係るシェル形針状ころ軸受１は、片側を閉じたシェ
ル形の外輪２が設けられ、この外輪２に複数個の針状こ
ろ３が環状の保持器４で保持した状態で装着されるころ
装着部２ａが形成され、前記保持器４が外輪２から抜け
出るのを防止するための抜け止め手段５が外輪２のころ
挿入側に設けられている。As shown in FIG. 1, a shell-shaped needle roller bearing 1 according to a first embodiment of the present invention is provided with a shell-shaped outer ring 2 having one side closed, and a plurality of needles are provided on the outer ring 2. A roller mounting portion 2a is formed in which the roller 3 is mounted while being held by an annular retainer 4. A retaining means 5 for preventing the retainer 4 from falling out of the outer ring 2 is inserted into the roller of the outer ring 2. It is provided on the side.
【００１４】この抜け止め手段５は、図２〜図４に示す
ように、外輪２のころ挿入側に一体的に形成されて外輪
２を硬化（例えば焼き入れ加工）する際に同時に硬化さ
れるとともに、軸心６に向けて外輪２外側に傾斜する環
状の鍔部７と、この鍔部７ところ装着部２ａとの間に形
成されて前記ころ装着部２ａよりも大径のシール装着部
１５と、このシール装着部１５に装着される環状のシー
ル部材８とを備えている。As shown in FIGS. 2 to 4, the retaining means 5 is integrally formed on the roller insertion side of the outer ring 2 and is simultaneously cured when the outer ring 2 is cured (for example, hardened). At the same time, a seal fitting portion 15 formed between the annular flange portion 7 inclined toward the outside of the outer ring 2 toward the shaft center 6 and the flange portion 7 and the mounting portion 2a and having a larger diameter than the roller mounting portion 2a. And an annular seal member 8 mounted on the seal mounting portion 15.
【００１５】このシール部材８は、前記保持器４の側部
から鍔部７の裏面に渡るように配置されて外輪２の装着
部２ａに装着した保持器４に挿入側から当接する当接部
９ａと、この当接部９ａに対して折曲して形成した弾性
変形部９ｂとから断面く字形に形成された環状の芯金１
０を有し、シール本体１１は、合成ゴムによって形成さ
れ、鍔部７を折曲した際に鍔部７の内側に生じる空間に
嵌合す嵌合部１２を有している。The sealing member 8 is disposed so as to extend from the side of the retainer 4 to the back surface of the flange portion 7 and is in contact with the retainer 4 mounted on the mounting portion 2a of the outer ring 2 from the insertion side. 9a and an elastic core portion 1b formed by bending the contact portion 9a to form an annular core bar 1 having a rectangular cross section.
The seal main body 11 has a fitting portion 12 formed of synthetic rubber and fitted into a space formed inside the flange portion 7 when the flange portion 7 is bent.
【００１６】なお、外輪２のころ挿入側には、針状ころ
３を保持させた状態で保持器４を外輪２内に装着すると
ともにシール部材８をシール装着部１５に装着するため
の装着用開口１６が形成されている。On the roller insertion side of the outer ring 2, a mounting device for mounting the retainer 4 in the outer ring 2 while holding the needle roller 3 and mounting the seal member 8 to the seal mounting portion 15. An opening 16 is formed.
【００１７】前記保持器４の直径Ｄ１は、鍔部７の内径
Ｄ２に等しいかわずかに小さく設定され、前記鍔部７の
内径Ｄ２はシール部材８の外径Ｄ３よりも小さく形成さ
れている。The diameter D1 of the retainer 4 is set to be equal to or slightly smaller than the inner diameter D2 of the flange 7, and the inner diameter D2 of the flange 7 is formed smaller than the outer diameter D3 of the seal member 8.
【００１８】上記構成のシェル形針状ころ軸受１は、ま
ず、シェル形の外輪２を金属プレス加工によって形成す
るものであるが、このとき、図１に示すように、同時に
鍔部７を形成し、鍔部７を含めて外輪２全体に例えば焼
き入れ加工を施して硬化させる。次に、保持器４に針状
ころ３を保持させた状態で、保持器４を外輪２内に装着
用開口１６からころ装着部２ａに対して装着する。この
とき、前記保持器４の直径Ｄ１は、鍔部７の内径Ｄ２に
等しいかわずかに小さく設定され、鍔部７の内径Ｄ２は
シール部材８の外形Ｄ３よりも小さく設定されているの
で、保持器４は装着用開口１６からころ装着部２ａに容
易に装着することができる。In the shell-shaped needle roller bearing 1 having the above-described structure, the shell-shaped outer ring 2 is first formed by metal stamping. At this time, as shown in FIG. Then, the entire outer race 2 including the flange portion 7 is hardened by, for example, quenching. Next, in a state where the needle rollers 3 are held by the cage 4, the cage 4 is mounted on the roller mounting portion 2 a through the mounting opening 16 in the outer race 2. At this time, the diameter D1 of the retainer 4 is set equal to or slightly smaller than the inner diameter D2 of the flange 7, and the inner diameter D2 of the flange 7 is set smaller than the outer diameter D3 of the seal member 8. The container 4 can be easily mounted on the roller mounting portion 2a through the mounting opening 16.
【００１９】続いて、シール部材８をシール装着部１５
に装着するが、鍔部７の内径Ｄ２はシール部材８の外径
Ｄ３よりも小さく形成されているので、シール部材８お
よび芯金１０の弾性を利用し、図３に示すように、芯金
１０の弾性力に抗して弾性変形部９ｂをさらに傾斜さ
せ、シール部材８を装着用開口１６に対してくぐらせる
ように押込む。そして、図４に示すように、シール部材
８がシール装着部１５に装着されると、芯金１０の弾性
によってこの形状が復元し、嵌合部１２はシール装着部
１５に嵌合する。Subsequently, the seal member 8 is connected to the seal mounting portion 15.
The inner diameter D2 of the flange 7 is smaller than the outer diameter D3 of the sealing member 8, so that the elasticity of the sealing member 8 and the core 10 is used, as shown in FIG. The elastic deformation portion 9b is further inclined against the elastic force of 10, and the sealing member 8 is pushed into the mounting opening 16 so as to pass through. Then, as shown in FIG. 4, when the seal member 8 is mounted on the seal mounting portion 15, the shape is restored by the elasticity of the metal core 10, and the fitting portion 12 is fitted into the seal mounting portion 15.
【００２０】そして、保持器４に芯金１０の当接部９ａ
が当接し、当接部９ａに対して折曲して形成した弾性変
形部９ｂが当接部９ａから所定の傾斜角度（例えば４５
°）をもって鍔部７を支持するので、保持器４が外輪２
に対して確実に保持される。そして、シール部材８に例
えばスパイダ軸（図の仮想線で示す）を外輪２内の潤滑
剤の損失を抑えることができる。The abutting portion 9a of the cored bar 10 is
The elastically deforming portion 9b formed by bending the contact portion 9a is bent at a predetermined inclination angle (for example, 45 degrees) from the contact portion 9a.
°) to support the collar 7, so that the retainer 4
Is securely held. Then, for example, a spider shaft (indicated by a phantom line in the figure) may be attached to the seal member 8 to suppress the loss of the lubricant in the outer race 2.
【００２１】このように、本発明の実施の第一形態によ
れば、シェル形の外輪２を形成する際、同時に鍔部７を
形成し、鍔部７を含めて外輪２全体を硬化させるので、
鍔部７の後曲げ加工の必要がなく、従って、従来のよう
に、鍔部７となる部分には防炭を施すか焼鈍しとして未
硬化部分としておくことで後曲げ加工する場合に比べて
鍔部７の剛性が向上し、また防炭を施す手間を省くこと
ができ、後曲げ加工がないので、外輪２に割れが発生す
るのを防止できる。As described above, according to the first embodiment of the present invention, when the shell-shaped outer ring 2 is formed, the flange 7 is formed at the same time, and the entire outer ring 2 including the flange 7 is hardened. ,
There is no need for the post-bending process of the flange portion 7, so that the portion to be the flange portion 7 is subjected to post-bending process by performing carbon protection or annealing as an uncured portion as in the related art. The rigidity of the flange portion 7 is improved, and labor for performing carbon protection can be omitted, and since there is no post-bending process, it is possible to prevent the outer ring 2 from cracking.
【００２２】次に、本発明の実施の第二形態を図５〜図
１０に基づいて説明する。本発明の実施の第二形態に係
るシェル形針状ころ軸受１は、シェル形の外輪２の内周
面側に配置される複数個の針状ころ３が環状の保持器４
で保持された状態でころ装着部２１に装着され、前記保
持器４が外輪２から抜け出るのを防止するための抜け止
め手段２０が外輪２のころ挿入側に設けられている。Next, a second embodiment of the present invention will be described with reference to FIGS. In a shell-type needle roller bearing 1 according to a second embodiment of the present invention, a plurality of needle rollers 3 disposed on the inner peripheral surface side of a shell-shaped outer ring 2 are formed of an annular cage 4.
The retainer 4 is mounted on the roller mounting portion 21 in a state where the outer ring 2 is retained, and is provided on the roller insertion side of the outer ring 2 to prevent the retainer 4 from falling out of the outer ring 2.
【００２３】この抜け止め手段２０は、前記ころ装着部
２１のころ挿入側に同心かつ拡径して形成されたシール
装着部２２と、このシール装着部２２のころ挿入側に形
成されてころ装着部２１およびシール装着部２２に偏心
して形成された装着用開口２３と、この装着用開口２３
の外周一部に形成された鍔部２４とから構成されてい
る。The retaining means 20 includes a seal mounting part 22 formed concentrically and expanding in diameter on the roller insertion side of the roller mounting part 21 and a roller mounting part formed on the roller insertion side of the seal mounting part 22. Mounting portion 23 formed eccentrically to the portion 21 and the seal mounting portion 22;
And a flange portion 24 formed on a part of the outer periphery of the.
【００２４】すなわち、図９および図１０に示すよう
に、装着用開口２３をころ装着部２１およびシール装着
部２２から偏心させることにより、図５〜図および図１
０に示すように、鍔部２４が一側から他側に移動するに
従って次第に低くなるようにし、一側の他側対向位置で
は鍔部２４が省略されて、シール装着部２２と装着用開
口２３とが一致するようになっている。That is, as shown in FIGS. 9 and 10, the mounting opening 23 is eccentric from the roller mounting portion 21 and the seal mounting portion 22 to thereby obtain the configuration shown in FIGS.
As shown in FIG. 0, the flange portion 24 is gradually lowered as it moves from one side to the other side, and the flange portion 24 is omitted at a position facing the other side on one side, and the seal mounting portion 22 and the mounting opening 23 are formed. And match.
【００２５】なお、シール装着部２２の直径Ｄ５はシー
ル部材２５の直径Ｄ６に対して等しいかわずかに小さく
形成され、装着用開口２３の直径Ｄ４はシール部材２５
の直径Ｄ６に対して小さく形成されている。The diameter D5 of the seal mounting portion 22 is equal to or slightly smaller than the diameter D6 of the seal member 25, and the diameter D4 of the mounting opening 23 is
Is formed to be smaller than the diameter D6.
【００２６】前記シール部材２５は、環状の本体２６と
この本体２６に埋設された芯金２７とを有し、芯金２７
は径方向に広がろうとする弾性力を有した弾性部２８が
形成されている。The seal member 25 has an annular main body 26 and a metal core 27 embedded in the main body 26.
Is formed with an elastic portion 28 having an elastic force to expand in the radial direction.
【００２７】上記構成のシェル形針状ころ軸受１は、ま
ず、シェル形の外輪２を金属プレス加工によって形成す
る際、同時に鍔部２４を形成し、鍔部２４を含めて外輪
２全体に例えば焼き入れ加工を施して硬化させる。この
とき、装着用開口２３を、ころ装着部２１およびシール
装着部２２に対して偏心して形成することで、鍔部２４
は装着用開口２３の一部を除いた外周ほぼ全体に形成さ
れる。次に、保持器４に針状ころ３を保持させた状態で
保持器４をころ装着部２１に装着する。In the shell-shaped needle roller bearing 1 having the above-described structure, first, when the shell-shaped outer ring 2 is formed by metal pressing, a flange portion 24 is formed at the same time, and, for example, the entire outer ring 2 including the flange portion 24 is formed. It is hardened by quenching. At this time, by forming the mounting opening 23 eccentrically with respect to the roller mounting portion 21 and the seal mounting portion 22, the flange portion 24 is formed.
Is formed on almost the entire outer periphery except a part of the mounting opening 23. Next, the cage 4 is mounted on the roller mounting portion 21 with the needle rollers 3 being held by the cage 4.
【００２８】続いて、シール部材２５を装着用開口２３
からシール装着部２２に挿入するが、このとき、図７に
示すように、まずシール部材２５の一側をシール装着部
２２の一側、すなわち、鍔部２４が高い方へ挿入する。
続いて、シール部材２５の他側をシール装着部２２の他
側へ向けて挿入するようにする。そして、装着用開口２
３の直径Ｄ４はシール部材２５の直径Ｄ６に対して小さ
く形成されているが、シール部材２５の一側をシール装
着部２２の一側へ挿入することで、鍔部２４にシール部
材２５の一側を保持した状態で順に他側へ向けて容易に
挿入することができる。Subsequently, the sealing member 25 is attached to the mounting opening 23.
7, at this time, as shown in FIG. 7, first, one side of the seal member 25 is inserted into one side of the seal mounting portion 22, that is, the flange 24 is higher.
Subsequently, the other side of the seal member 25 is inserted toward the other side of the seal mounting section 22. And the mounting opening 2
3 is formed to be smaller than the diameter D6 of the seal member 25, but one side of the seal member 25 is inserted into one side of the seal mounting portion 22 so that the flange member 24 It can be easily inserted in order toward the other side while holding the side.
【００２９】シール装着部２２の直径Ｄ５はシール部材
２５の直径Ｄ６に対して等しいかわずかに小さく形成さ
れているので、シール部材２５の他側は弾性部２８の弾
性に抗してある程度の押圧力を加えて、シール装着部２
２に挿入するようにする。そして、シール部材２５すな
わち芯金２７の弾性部２８の弾性に抗して押圧すること
で、シール部材２５が変形して図８に示すように、シー
ル装着部２２にシール部材２５が適切な嵌着力で嵌着す
る。Since the diameter D5 of the seal mounting portion 22 is equal to or slightly smaller than the diameter D6 of the seal member 25, the other side of the seal member 25 is pressed to some extent against the elasticity of the elastic portion 28. Apply pressure to seal mounting part 2
2 Then, the seal member 25, that is, the elastic member 28 of the metal core 27 is pressed against the elasticity of the elastic member 28, thereby deforming the seal member 25, and as shown in FIG. Fit by force.
【００３０】このようにすることにより、シール部材２
５によって保持器４が外輪２から抜けるのを確実に防止
するとともに、スパイダ軸をシール部材２５に通すこと
で外輪２内の潤滑剤が漏れ出るのを防止できる。By doing so, the sealing member 2
5 prevents the retainer 4 from coming off the outer ring 2 and prevents the lubricant in the outer ring 2 from leaking out by passing the spider shaft through the seal member 25.
【００３１】このように本発明の実施の第二形態によれ
ば、シェル形の外輪２を形成する際、同時に鍔部２４を
形成し、鍔部２４を含めて外輪２全体に焼き入れ加工を
施して硬化させるので、鍔部２４の後曲げ加工の必要が
なく、従って、外輪２に割れが発生するのを防止でき、
また、従来のように、鍔部２４となる部分には防炭を施
すか焼鈍しとして未硬化部分としておくことで後曲げ加
工する場合に比べて、鍔部２４の剛性が向上し、また防
炭を施す手間を省くことができる。As described above, according to the second embodiment of the present invention, when forming the shell-shaped outer ring 2, the flange portion 24 is formed at the same time, and the entire outer ring 2 including the flange portion 24 is quenched. Since it is applied and hardened, there is no need for the post-bending process of the flange portion 24, and therefore, it is possible to prevent the outer ring 2 from cracking,
In addition, the rigidity of the flange portion 24 is improved compared with the case where the flange portion 24 is subjected to post-bending processing by performing carbon protection or annealing as an unhardened portion as in the related art, and furthermore, The trouble of applying charcoal can be saved.
【００３２】さらに、シール装着部２２のころ挿入側に
形成されてころ装着部２１およびシール装着部２２に偏
心して形成された装着用開口２３を形成することで、他
側の鍔部２４を省略あるいは低くすることができるの
で、シール部材２５をシール装着部２２に装着し易い。Further, by forming a mounting opening 23 formed on the roller insertion side of the seal mounting portion 22 so as to be eccentric to the roller mounting portion 21 and the seal mounting portion 22, the flange portion 24 on the other side is omitted. Alternatively, since the seal member 25 can be lowered, the seal member 25 can be easily mounted on the seal mounting portion 22.
【００３３】[0033]
【発明の効果】以上の説明から明らかな通り、本発明
は、針状ころを保持した保持器がころ装着部から抜け出
るのを防止するための抜け止め手段が、外輪のころ挿入
側に一体的に形成されて外輪を硬化する際に同時に硬化
されるとともに軸心に向けて外輪外側に傾斜する環状の
鍔部と、この鍔部と保持器の側部との間のシール装着部
に装着される環状のシール部材とを備えたもので、外輪
を形成する際、同時に鍔部を形成し、鍔部を含めて外輪
全体を硬化させることで鍔部の後曲げ加工および防炭加
工の必要がなく、従って、シェル形針状ころ軸受を容易
に製作し得、また、外輪の剛性が向上して割れが発生す
るのを防止できる。As is apparent from the above description, according to the present invention, the retaining means for preventing the retainer holding the needle rollers from falling out of the roller mounting portion is integrated with the roller insertion side of the outer ring. An annular flange which is formed at the same time as the outer ring is hardened and which is hardened at the same time as the outer ring is inclined toward the axis, and is mounted on a seal mounting portion between the flange and the side of the retainer. When the outer ring is formed, a flange portion is formed at the same time, and the entire outer ring including the flange portion is hardened, so that it is necessary to perform a rear bending process and a carbon preventing process on the flange portion. Therefore, a shell-type needle roller bearing can be easily manufactured, and the rigidity of the outer race can be improved to prevent the occurrence of cracks.
【図１】本発明の実施の第一形態を示すシェル形針状こ
ろ軸受の外輪の単体断面図である。FIG. 1 is a single sectional view of an outer ring of a shell-type needle roller bearing showing a first embodiment of the present invention.
【図２】同じくシール装着部にシール部材を装着する前
の断面図である。FIG. 2 is a sectional view showing a state before the seal member is mounted on the seal mounting section.
【図３】同じくシール装着部にシール部材を装着する途
中の断面図である。FIG. 3 is a cross-sectional view showing a state in which a seal member is being mounted on the seal mounting portion.
【図４】同じく同じくシール装着部にシール部材を装着
した後の断面図である。FIG. 4 is a sectional view of the same after a seal member is mounted on the seal mounting portion.
【図５】本発明の実施の第二形態を示すシェル形針状こ
ろ軸受の外輪にシール部材を装着する前の断面図であ
る。FIG. 5 is a sectional view of a shell-type needle roller bearing according to a second embodiment of the present invention before a seal member is mounted on an outer ring of the needle roller bearing.
【図６】同じくシール部材を装着用開口に嵌合した状態
の断面図である。FIG. 6 is a cross-sectional view showing a state where the sealing member is fitted in the mounting opening.
【図７】同じくシール部材の一側をシール装着部に挿入
した状態の断面図である。FIG. 7 is a cross-sectional view showing a state where one side of the seal member is inserted into a seal mounting portion.
【図８】同じくシール部材をシール装着部に挿入した状
態の断面図である。FIG. 8 is a cross-sectional view showing a state where the seal member is inserted into the seal mounting portion.
【図９】同じく外輪の中央部の断面図である。FIG. 9 is a sectional view of a central portion of the outer race.
【図１０】同じく外輪の端部の断面図である。FIG. 10 is a sectional view of an end portion of the outer race.
【図１１】一般的なクロスジョイントの分解斜視図であ
る。FIG. 11 is an exploded perspective view of a general cross joint.
【図１２】従来のシェル形針状ころ軸受の外輪の一部断
面図である。FIG. 12 is a partial cross-sectional view of an outer ring of a conventional shell needle roller bearing.
【図１３】同じく外輪に保持器を装着した状態の断面図
である。FIG. 13 is a cross-sectional view showing a state in which a retainer is mounted on the outer race.
【図１４】同じくシール部材を装着した状態の断面図で
ある。FIG. 14 is a sectional view showing a state where a seal member is mounted.
【図１５】同じく鍔部を形成した状態の断面図である。FIG. 15 is a cross-sectional view showing a state where a flange is formed.
１ シェル形針状ころ軸受 ２ 外輪 ３ 針状ころ ４ 保持器 ７ 鍔部 ８ シール部材 １０ 芯金 １５ シール装着部 １６ 装着用開口 DESCRIPTION OF SYMBOLS 1 Shell-shaped needle roller bearing 2 Outer ring 3 Needle roller 4 Cage 7 Flange part 8 Seal member 10 Core 15 Seal mounting part 16 Mounting opening
Claims (2)
の針状ころが環状の保持器で保持された状態で外輪のこ
ろ装着部に装着され、前記保持器がころ装着部から抜け
出るのを防止するための抜け止め手段が、外輪のころ挿
入側に設けられ、 この抜け止め手段は、外輪のころ挿入側に一体的に形成
されて外輪を硬化する際に同時に硬化されるとともに軸
心に向けて外輪外側に傾斜する環状の鍔部と、この鍔部
と保持器の側部との間のシール装着部に装着される環状
のシール部材とを備え、 前記鍔部の内径はシール部材の外径に対して小さく設定
され、前記シール部材は、前記保持器の側部から鍔部の
裏面に渡るようにシール装着部に装着される弾性変形可
能な芯金を有したことを特徴とするシェル形針状ころ軸
受。1. A plurality of needle rollers arranged along an inner peripheral surface of an outer ring are mounted on a roller mounting portion of an outer ring while being held by an annular retainer, and the retainer is moved from the roller mounting portion. A retaining means for preventing slipping out is provided on the roller insertion side of the outer ring, and the retaining means is integrally formed on the roller insertion side of the outer ring and is simultaneously cured when the outer ring is cured. An annular flange that is inclined toward the outside of the outer ring toward the axis, and an annular seal member that is mounted on a seal mounting portion between the flange and the side of the retainer. The seal member is set to be smaller than the outer diameter of the seal member, and the seal member has an elastically deformable core bar attached to the seal attachment portion so as to pass from the side of the retainer to the back surface of the flange portion. Features a needle needle roller bearing shell.
の針状ころが環状の保持器で保持された状態で外輪のこ
ろ装着部に装着され、前記保持器がころ装着部から抜け
出るのを防止するための抜け止め手段が外輪のころ挿入
側に設けられ、 この抜け止め手段は、ころ装着部に連続して形成されて
ころ装着部と同心のシール装着部と、このシール装着部
に装着されるシール部材と、外輪のころ挿入側に形成さ
れて外輪を硬化する際に同時に硬化される鍔部とを有
し、 この鍔部は、シール挿入用開口をシール装着部に対して
径方向に偏心させることでその一部を省くかもしくは低
く設定されたことを特徴とするシェル形針状ころ軸受。2. A plurality of needle rollers arranged along an inner peripheral surface of an outer ring are mounted on a roller mounting portion of an outer ring while being held by an annular retainer, and the retainer is moved from the roller mounting portion. A retaining means for preventing slipping out is provided on the roller insertion side of the outer ring. The retaining means is formed continuously with the roller mounting part, and is provided with a seal mounting part concentric with the roller mounting part and a seal mounting part. And a flange formed on the roller insertion side of the outer ring and hardened at the same time as the outer ring is hardened, and the flange has a seal insertion opening with respect to the seal mounting portion. A needle roller bearing in the form of a shell, wherein a part thereof is omitted or set low by being radially eccentric.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000279621A JP2002089550A (en) | 2000-09-14 | 2000-09-14 | Shell type needle roller bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000279621A JP2002089550A (en) | 2000-09-14 | 2000-09-14 | Shell type needle roller bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002089550A true JP2002089550A (en) | 2002-03-27 |
Family
ID=18764596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000279621A Pending JP2002089550A (en) | 2000-09-14 | 2000-09-14 | Shell type needle roller bearing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002089550A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009299797A (en) * | 2008-06-13 | 2009-12-24 | Nsk Ltd | Bottomed shell shaped full type roller bearing and universal joint |
| US7934872B2 (en) | 2007-03-19 | 2011-05-03 | Jtekt Corporation | Drawn cup roller bearing and method of producing drawn cup roller bearing |
| JP2011137534A (en) * | 2010-01-04 | 2011-07-14 | Ntn Corp | Supporting bearing |
| US20120207421A1 (en) * | 2010-09-27 | 2012-08-16 | Nsk Ltd. | Outer ring for a shell-type radial needle bearing and manufacturing method thereof |
| JP2012167781A (en) * | 2011-02-16 | 2012-09-06 | Nsk Ltd | Shell type needle bearing |
| US8282289B2 (en) * | 2004-09-24 | 2012-10-09 | Ntn Corporation | Rollers with retainer |
| JP2019100415A (en) * | 2017-11-30 | 2019-06-24 | 日本精工株式会社 | Anti-cementation agent infiltration prevention bearing structure, four-point contact ball bearing including the same and ball screw device |
| CN110486375A (en) * | 2019-07-30 | 2019-11-22 | 重庆青山工业有限责任公司 | Integrated seal formula bearing arrangement |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0530557U (en) * | 1991-09-30 | 1993-04-23 | エヌテイエヌ株式会社 | Needle roller bearings |
| JP2000501818A (en) * | 1995-12-06 | 2000-02-15 | アーベー ボルボ | Disc brake device for vehicles |
-
2000
- 2000-09-14 JP JP2000279621A patent/JP2002089550A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0530557U (en) * | 1991-09-30 | 1993-04-23 | エヌテイエヌ株式会社 | Needle roller bearings |
| JP2000501818A (en) * | 1995-12-06 | 2000-02-15 | アーベー ボルボ | Disc brake device for vehicles |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8282289B2 (en) * | 2004-09-24 | 2012-10-09 | Ntn Corporation | Rollers with retainer |
| US7934872B2 (en) | 2007-03-19 | 2011-05-03 | Jtekt Corporation | Drawn cup roller bearing and method of producing drawn cup roller bearing |
| JP2009299797A (en) * | 2008-06-13 | 2009-12-24 | Nsk Ltd | Bottomed shell shaped full type roller bearing and universal joint |
| JP2011137534A (en) * | 2010-01-04 | 2011-07-14 | Ntn Corp | Supporting bearing |
| US20120207421A1 (en) * | 2010-09-27 | 2012-08-16 | Nsk Ltd. | Outer ring for a shell-type radial needle bearing and manufacturing method thereof |
| US8834034B2 (en) * | 2010-09-27 | 2014-09-16 | Nsk Ltd. | Outer ring for a shell-type radial needle bearing and manufacturing method thereof |
| US9314833B2 (en) | 2010-09-27 | 2016-04-19 | Nsk Ltd. | Outer ring for a shell-type radial needle bearing and manufacturing method thereof |
| USRE47828E1 (en) * | 2010-09-27 | 2020-01-28 | Nsk Ltd. | Outer ring for a shell-type radial needle bearing and manufacturing method thereof |
| JP2012167781A (en) * | 2011-02-16 | 2012-09-06 | Nsk Ltd | Shell type needle bearing |
| JP2019100415A (en) * | 2017-11-30 | 2019-06-24 | 日本精工株式会社 | Anti-cementation agent infiltration prevention bearing structure, four-point contact ball bearing including the same and ball screw device |
| JP7119358B2 (en) | 2017-11-30 | 2022-08-17 | 日本精工株式会社 | Bearing structure for preventing intrusion of carburizing agent, and four-point contact ball bearing and ball screw device provided with the same |
| CN110486375A (en) * | 2019-07-30 | 2019-11-22 | 重庆青山工业有限责任公司 | Integrated seal formula bearing arrangement |
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