JPH08100820A - Seal structure for roller bearing device - Google Patents
Seal structure for roller bearing deviceInfo
- Publication number
- JPH08100820A JPH08100820A JP23730794A JP23730794A JPH08100820A JP H08100820 A JPH08100820 A JP H08100820A JP 23730794 A JP23730794 A JP 23730794A JP 23730794 A JP23730794 A JP 23730794A JP H08100820 A JPH08100820 A JP H08100820A
- Authority
- JP
- Japan
- Prior art keywords
- seal
- outer ring
- solid lubricant
- seal member
- seal lip
- 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)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、転がり軸受装置のシ
ール構造に関し、例えばクロスジョイントにおけるシェ
ル形針状ころ軸受のシール構造に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seal structure for a rolling bearing device, for example, a seal structure for a shell type needle roller bearing in a cross joint.
【０００２】[0002]
【従来の技術】図５及び図６は、従来のクロスジョイン
トにおけるシェル形針状ころ軸受のシール構造を示すも
のである。クロスジョイントの一方のヨーク１の連結穴
２に他方のヨークのトラニオン軸３を挿入し、そのトラ
ニオン軸３と前記連結穴２との間にシェル形針状ころ軸
受４を介在し連結している。2. Description of the Related Art FIGS. 5 and 6 show a seal structure of a conventional needle roller bearing of a shell type in a cross joint. The trunnion shaft 3 of the other yoke is inserted into the connecting hole 2 of one yoke 1 of the cross joint, and a shell needle roller bearing 4 is interposed between the trunnion shaft 3 and the connecting hole 2 for connection. .
【０００３】このシェル形針状ころ軸受４は、トラニオ
ン軸３の先端部に被せられるカップ状のシェル形外輪５
及びそのシェル形外輪５の内径面とトラニオン軸３の外
径面との間に介在される針状ころ６とにより構成され
る。This shell-shaped needle roller bearing 4 has a cup-shaped shell-shaped outer ring 5 which covers the tip of the trunnion shaft 3.
And the needle roller 6 interposed between the inner diameter surface of the shell-shaped outer ring 5 and the outer diameter surface of the trunnion shaft 3.
【０００４】上記のシェル形外輪５の内端面には内向き
のつば部７が形成され、そのつば部７とトラニオン軸３
のつば部８との間にシール部材９が装着される。このシ
ール部材９は、前記外輪５のつば部７の端面に押圧され
る複数のシールリップ１１を有し、上記シール部材９に
一体成形した芯金１２をトラニオン軸３のつば部８の内
面に押圧している。An inward flange portion 7 is formed on the inner end surface of the shell-shaped outer ring 5, and the flange portion 7 and the trunnion shaft 3 are formed.
A seal member 9 is mounted between the collar portion 8 and the collar portion 8. The seal member 9 has a plurality of seal lips 11 pressed against the end surface of the collar portion 7 of the outer ring 5, and a core metal 12 integrally formed with the seal member 9 is provided on the inner surface of the collar portion 8 of the trunnion shaft 3. Pressing.
【０００５】上記の軸受４の潤滑にはグリースが用いら
れ、シール部材９はそのグリースの漏れを防止すると共
に、外部からのほこり、泥水等の浸入を防止する。Grease is used to lubricate the bearing 4 described above, and the seal member 9 prevents the grease from leaking and prevents dust and muddy water from entering from the outside.
【０００６】[0006]
【発明が解決しようとする課題】上記のごとき軸受装置
を自動車プロペラシャフトのクロスジョイントに用いた
場合、通常の道路を走行する場合はそのシール作用につ
いて特に問題となることはないが、未舗装道路、悪路等
を主として走行する自動車に用いた場合は、シール作用
が不十分となる問題がある。When the above bearing device is used for a cross joint of a propeller shaft of an automobile, the sealing action of the bearing device does not cause any particular problem when traveling on a normal road, but it does not affect the unpaved road. When it is used for an automobile mainly traveling on a bad road, there is a problem that the sealing action becomes insufficient.
【０００７】そこで、この発明は、シールリップの摺接
面への油分の補給手段を設けることにより、シールリッ
プの摩耗を軽減させ、密封効果を向上することを目的と
する。Therefore, an object of the present invention is to reduce the wear of the seal lip and improve the sealing effect by providing a means for supplying oil to the sliding contact surface of the seal lip.
【０００８】[0008]
【課題を解決するための手段】上記の目的を達成するた
めに、この発明は軸の外径面に転がり軸受を嵌着し、上
記軸に形成されたつば部又は軸受ハウジング内径面と上
記転がり軸受の外輪との間にシール部材を介在してなる
転がり軸受装置のシール構造において、上記シール部材
に上記外輪側に向いた複数のシールリップを形成し、上
記外輪の外端面の一部にリング状の固形潤滑材を沿わ
せ、その固形潤滑材の外端面に上記シール部材の一部の
シールリップを押圧させ、他のシールリップを上記外輪
の外端面に押圧させた構成としたものである。In order to achieve the above object, the present invention has a rolling bearing fitted on the outer diameter surface of a shaft, and a flange portion formed on the shaft or a bearing housing inner diameter surface and the rolling surface. In a seal structure of a rolling bearing device, wherein a seal member is interposed between an outer ring of a bearing and a plurality of seal lips facing the outer ring side are formed on the seal member, and a ring is formed on a part of an outer end surface of the outer ring. -Shaped solid lubricant is arranged along the outer end surface of the solid lubricant, a part of the seal lip of the seal member is pressed, and the other seal lip is pressed against the outer end surface of the outer ring. .
【０００９】なお、上記の転がり軸受装置として、シェ
ル形針状ころ軸受を用いる場合もある。A shell type needle roller bearing may be used as the rolling bearing device.
【００１０】[0010]
【作用】上記の構成を有するシール構造は、シール部材
のシールリップが摺接する外輪の端面は、その端面に押
し当てられたリング状の固形潤滑材から補給される油分
により潤滑される。また、その固形潤滑材はシールリッ
プにより外輪の端面に押圧される。In the seal structure having the above structure, the end surface of the outer ring, which is in sliding contact with the seal lip of the seal member, is lubricated by the oil component supplied from the ring-shaped solid lubricant pressed against the end surface. The solid lubricant is pressed against the end surface of the outer ring by the seal lip.
【００１１】[0011]
【実施例】図１及び図２に示した第１実施例は自動車の
クロスジョイントにおけるシェル形針状ころ軸受のシー
ル構造であり、この基本的構造は、前述の図５及び図６
に示した従来例と同様であるので、同一部分については
同一の符号を付して示すにとどめその説明を省略する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment shown in FIGS. 1 and 2 is a seal structure for a shell type needle roller bearing in a cross joint of an automobile, the basic structure of which is shown in FIGS.
Since it is the same as the conventional example shown in FIG. 3, the same parts are denoted by the same reference numerals and the description thereof is omitted.
【００１２】相違する部分は、断面四角形のリング状固
形潤滑材１３をトラニオン軸３に挿通し、これをシェル
形外輪５のつば部７内径寄りの外端面に沿わせ、更にそ
の固形潤滑材１３の外端面にシール部材９の内側のシー
ルリップ１１’を押圧し、外側のシールリップ１１をつ
ば部８の外径寄りの外端面に押圧した点である。シェル
形外輪５の内部にはグリース又は固形潤滑材が封入され
る。At the different point, a ring-shaped solid lubricant 13 having a quadrangular cross section is inserted into the trunnion shaft 3, and the trunnion shaft 3 is provided along the outer end surface of the shell-shaped outer ring 5 near the inner diameter of the flange portion 7. This is the point where the inner seal lip 11 ′ of the seal member 9 is pressed against the outer end face of the above and the outer seal lip 11 is pressed against the outer end face of the collar portion 8 near the outer diameter. Grease or solid lubricant is enclosed in the shell-shaped outer ring 5.
【００１３】前述の固形潤滑材１３は、「ポリルーブ」
「プラスチックグリース」等の商品名で知られているも
のであり、平均分子量約１×１０6 〜５×１０6 の超高
分子量ポリエチレン９５〜１ｗｔ％と、その超高分子量
ポリエチレンのゲル化温度より高い滴点を有する潤滑グ
リース５〜９９ｗｔ％とからなる混合物を上記所定の空
所に充填したのち、上記超高分子量ポリエチレンのゲル
化温度以上に加熱し、その後冷却固化せしめたものであ
る（特公昭６３−２３２３９号公報参照）。The above-mentioned solid lubricant 13 is "polylube".
It is known under the trade name of “plastic grease” and the like, and is based on 95-1 wt% of ultra-high molecular weight polyethylene having an average molecular weight of about 1 × 10 6 to 5 × 10 6 and the gelling temperature of the ultra-high molecular weight polyethylene A mixture consisting of 5 to 99 wt% of lubricating grease having a high dropping point is filled in the predetermined space, heated to a temperature higher than the gelling temperature of the ultrahigh molecular weight polyethylene, and then cooled and solidified (special feature). (See Japanese Patent Publication No. 63-23239).
【００１４】その他の例として、平均分子量約１×１０
6 〜５×１０6 の超高分子量ポリオレフィンのゲル化点
より高い滴点を有する潤滑グリース５〜９９ｗｔ％に粒
径１〜１００μｍの前記超高分子量ポリオレフィン粉末
９５〜１ｗｔ％を混合して前記ゲル化点以上の温度で分
散保持させたものでもよい。As another example, the average molecular weight is about 1 × 10.
5 to 99 wt% of lubricating grease having a dropping point higher than the gelation point of 6 to 5 × 10 6 ultra high molecular weight polyolefin and 95 to 1 wt% of the ultra high molecular weight polyolefin powder having a particle diameter of 1 to 100 μm are mixed. It may be dispersed and held at a temperature equal to or higher than the chemical conversion point.
【００１５】上記いずれの場合も、固体ワックス等の油
の滲み出し抑制添加物を加えることがある。In any of the above cases, an oil exudation suppressing additive such as a solid wax may be added.
【００１６】上記の構成によると、外輪５のつば部７に
直接押圧される外側のシールリップ１１の摺接面は、固
形潤滑材１３から補給する油分により潤滑されるので、
そのシールリップ１１の摩耗が軽減される。According to the above construction, the sliding contact surface of the outer seal lip 11, which is directly pressed against the flange portion 7 of the outer ring 5, is lubricated by the oil component supplied from the solid lubricant 13.
The wear of the seal lip 11 is reduced.
【００１７】また、内側のシールリップ１１’は、固形
潤滑材１３に押圧され、その押圧力により該固形潤滑材
１３がつば部７の外端面に押圧されるので、この部分の
密封効果が上がる。図中、一点鎖線はリップシール１
１、１１’の変形後の形状、実線は変形前の形状を示
す。The inner seal lip 11 'is pressed by the solid lubricant 13, and the pressing force of the solid lubricant 13 presses the outer end surface of the collar portion 7, so that the sealing effect of this portion is improved. . In the figure, the alternate long and short dash line is the lip seal 1.
Shapes 1 and 11 'after deformation, solid lines show shapes before deformation.
【００１８】図３は、上記の変形例であり、この場合の
シール部材９は３枚のシールリップ１１ａ、１１ｂ、１
１ｃを有し、このうち、最も内側のシールリップ１１ａ
をリング状の固形潤滑材１３に押圧させている。中間部
のシールリップ１６をつば部７の外端面に押圧させ、外
側のシールリップ１１ｃを外輪５の外径面に押圧させて
いる。FIG. 3 is a modification of the above, in which the seal member 9 is composed of three seal lips 11a, 11b, 1
1c, of which the innermost seal lip 11a
Is pressed against the ring-shaped solid lubricant 13. The middle seal lip 16 is pressed against the outer end surface of the collar portion 7, and the outer seal lip 11c is pressed against the outer diameter surface of the outer ring 5.
【００１９】以上の実施例は、クロスジョイントにおけ
るトラニオン軸３のつば部８とシェル形外輪５のつば部
７との間にシール部材９を介在する場合について述べた
が、通常のシェル形針状ころ軸受のように、軸につば部
がない場合は、図４に示すようにシール部材９を軸受ハ
ウジング１４の内径面に強嵌し、他は前述の実施例と同
様の構成とする。In the above embodiment, the seal member 9 is interposed between the collar portion 8 of the trunnion shaft 3 and the collar portion 7 of the shell type outer ring 5 in the cross joint. In the case where the shaft does not have a flange portion as in the roller bearing, the seal member 9 is strongly fitted to the inner diameter surface of the bearing housing 14 as shown in FIG. 4, and the other configurations are similar to those of the above-described embodiment.
【００２０】更に、シェル形針状ころ軸受に限らず、転
がり軸受一般についても、この発明を適用することがで
きる。Further, the present invention can be applied to not only the shell type needle roller bearing but also rolling bearings in general.
【００２１】[0021]
【発明の効果】この発明は以上のごときものであるの
で、シール部材のシールリップの摺接面に長期にわたり
油分が補給され、シールリップの摩耗を軽減する効果が
ある。また、リング状の固形潤滑材がシール部材のシー
ルリップにより外輪の外端面に押圧されるので密封効果
が向上する効果もある。As described above, the present invention has the effect of replenishing the sliding contact surface of the seal lip of the seal member with oil for a long period of time and reducing the wear of the seal lip. In addition, since the ring-shaped solid lubricant is pressed against the outer end surface of the outer ring by the seal lip of the seal member, the sealing effect is improved.
【図１】第１実施例の断面図FIG. 1 is a sectional view of a first embodiment.
【図２】同上の一部拡大断面図FIG. 2 is a partially enlarged sectional view of the above.
【図３】同上の変形例の一部拡大断面図FIG. 3 is a partially enlarged sectional view of a modification example of the above.
【図４】他の実施例の一部拡大断面図FIG. 4 is a partially enlarged cross-sectional view of another embodiment.
【図５】従来例の断面図FIG. 5 is a sectional view of a conventional example.
【図６】同上の一部拡大断面図FIG. 6 is a partially enlarged sectional view of the above.
１ ヨーク ２ 連結穴 ３ トラニオン軸 ４ 針状ころ軸受 ５ シェル形外輪 ６ 針状ころ ７ つば部 ８ つば部 ９ シール部材 １１、１１’、１１ａ、１１ｂ、１１ｃ シールリップ １２ 芯金 １３ 固形潤滑材 １４ 軸受ハウジング 1 yoke 2 connection hole 3 trunnion shaft 4 needle roller bearing 5 shell type outer ring 6 needle roller 7 flange part 8 flange part 9 seal member 11, 11 ', 11a, 11b, 11c seal lip 12 core metal 13 solid lubricant 14 Bearing housing
Claims (2)
軸に形成されたつば部又は軸受ハウジング内径面と上記
転がり軸受の外輪との間にシール部材を介在してなる転
がり軸受装置のシール構造において、上記シール部材に
上記外輪側に向いた複数のシールリップを形成し、上記
外輪の外端面の一部にリング状の固形潤滑材を沿わせ、
その固形潤滑材の外端面に上記シール部材の一部のシー
ルリップを押圧させ、他のシールリップを上記外輪の外
端面に押圧させたことを特徴とする転がり軸受装置のシ
ール構造。1. A rolling bearing in which a rolling bearing is fitted on the outer diameter surface of a shaft, and a seal member is interposed between a flange portion or a bearing housing inner diameter surface formed on the shaft and the outer ring of the rolling bearing. In the seal structure of the device, a plurality of seal lips facing the outer ring side are formed on the seal member, and a ring-shaped solid lubricant is provided along a part of the outer end surface of the outer ring,
A seal structure for a rolling bearing device, characterized in that a part of the seal lip of the seal member is pressed against the outer end surface of the solid lubricant and another seal lip is pressed against the outer end surface of the outer ring.
ろ軸受であることを特徴とする転がり軸受装置のシール
構造。2. A seal structure for a rolling bearing device, wherein the rolling bearing device is a shell needle roller bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23730794A JPH08100820A (en) | 1994-09-30 | 1994-09-30 | Seal structure for roller bearing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23730794A JPH08100820A (en) | 1994-09-30 | 1994-09-30 | Seal structure for roller bearing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08100820A true JPH08100820A (en) | 1996-04-16 |
Family
ID=17013433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23730794A Pending JPH08100820A (en) | 1994-09-30 | 1994-09-30 | Seal structure for roller bearing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08100820A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008030375A1 (en) | 2008-06-25 | 2009-12-31 | Schaeffler Kg | Sealing arrangement for a friction or sliding bearing comprises a first molded part with an axial section and a radial section and a second molded part with an axial section and a radial section |
| US10570965B2 (en) | 2017-05-23 | 2020-02-25 | Aktiebolaget Skf | Universal joint bearing |
| US10859114B2 (en) | 2017-02-09 | 2020-12-08 | Aktiebolaget Skf | Universal joint bearing |
-
1994
- 1994-09-30 JP JP23730794A patent/JPH08100820A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008030375A1 (en) | 2008-06-25 | 2009-12-31 | Schaeffler Kg | Sealing arrangement for a friction or sliding bearing comprises a first molded part with an axial section and a radial section and a second molded part with an axial section and a radial section |
| US10859114B2 (en) | 2017-02-09 | 2020-12-08 | Aktiebolaget Skf | Universal joint bearing |
| US10570965B2 (en) | 2017-05-23 | 2020-02-25 | Aktiebolaget Skf | Universal joint bearing |
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