JP2002228009A - Oil seal - Google Patents
Oil sealInfo
- Publication number
- JP2002228009A JP2002228009A JP2001028906A JP2001028906A JP2002228009A JP 2002228009 A JP2002228009 A JP 2002228009A JP 2001028906 A JP2001028906 A JP 2001028906A JP 2001028906 A JP2001028906 A JP 2001028906A JP 2002228009 A JP2002228009 A JP 2002228009A
- Authority
- JP
- Japan
- Prior art keywords
- lip
- oil seal
- seal
- shaft member
- sleeve
- 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
- 229910052751 metal Inorganic materials 0.000 claims abstract description 3
- 239000002184 metal Substances 0.000 claims abstract description 3
- 239000000428 dust Substances 0.000 claims description 17
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 239000000843 powder Substances 0.000 abstract description 35
- 238000005299 abrasion Methods 0.000 abstract description 19
- 238000007789 sealing Methods 0.000 abstract description 11
- 239000000463 material Substances 0.000 abstract description 9
- 239000012528 membrane Substances 0.000 abstract 1
- 239000000314 lubricant Substances 0.000 description 8
- 239000003638 chemical reducing agent Substances 0.000 description 6
- 239000011148 porous material Substances 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 239000013013 elastic material Substances 0.000 description 3
- 229910001018 Cast iron Inorganic materials 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000005255 carburizing Methods 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- YAFQFNOUYXZVPZ-UHFFFAOYSA-N liproxstatin-1 Chemical compound ClC1=CC=CC(CNC=2C3(CCNCC3)NC3=CC=CC=C3N=2)=C1 YAFQFNOUYXZVPZ-UHFFFAOYSA-N 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000005121 nitriding Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000007517 polishing process Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
Landscapes
- Sealing With Elastic Sealing Lips (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
- Sealing Of Bearings (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する利用分野】本発明は、歯車装置等の機械
内部から潤滑剤等が外部へ漏れないように封止するオイ
ルシールに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oil seal for sealing a lubricant or the like from leaking out of a machine such as a gear device to the outside.
【０００２】[0002]
【従来の技術】図３は従来のオイルシールを示してい
る。オイルシール１は、ハウジング６と軸７との間に設
けられ、金属製の環状芯金５に機械本体の内部からの油
などの流出を防ぐための、ゴム等の弾性体からなるシー
ルリップ２と、このシールリップ２の軸方向内側に歯車
等の噛み合せによって発生する摩耗紛をシールリップに
進入することを防ぐための摩耗紛除去リップ３と、外部
からの異物の進入を除去するダストリップ４と、を設け
ている。オイルシール１は、ハウジング６に固定され、
シールリップ２と、摩耗紛除去リップ３と、ダストリッ
プ４と、が軸７の外周と摺接している。2. Description of the Related Art FIG. 3 shows a conventional oil seal. The oil seal 1 is provided between the housing 6 and the shaft 7, and is a seal lip 2 made of an elastic material such as rubber to prevent oil or the like from flowing out of the inside of the machine main body into the metal annular core 5. And a wear dust removing lip 3 for preventing wear dust generated by engagement of gears or the like from entering the seal lip 2 in the axial direction inside the seal lip 2, and a dust lip 4 for removing entry of foreign matter from the outside. And are provided. The oil seal 1 is fixed to the housing 6,
The seal lip 2, the wear dust removing lip 3, and the dust lip 4 are in sliding contact with the outer periphery of the shaft 7.
【０００３】また、オイルシール密封面を形成する部品
（軸部材）の材料としてピンホール等の微小ポーラスが
ない材料を使用し、オイルシール密封面の表面性状とし
て面粗度の確保、ポンプ作用による漏れ現象を防止する
ためにリードを持たない加工方法の採用、さらには、手
扱い時に部品の接触等により生じる傷の発生を防ぐため
に適度の表面硬度を確保するようにしている。Further, a material having no minute porous material such as a pinhole is used as a material of a component (shaft member) forming an oil seal sealing surface, and a surface roughness of the oil seal sealing surface is ensured, and a pump action is used. In order to prevent the leakage phenomenon, a processing method having no lead is employed, and further, an appropriate surface hardness is ensured in order to prevent the occurrence of scratches caused by contact of parts during handling.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、歯車装
置等の機械装置においては、歯車の噛み合せによって発
生した摩耗紛が摩耗紛除去リップ３を傷付けて、この傷
の部分よりシールリップ２に摩耗紛が進入してしまう。
その結果シールリップ２にも傷がついてしまい密封流体
側に油が漏れてきてしまうという問題があった。However, in a mechanical device such as a gear device, the abrasion powder generated by the meshing of the gears damages the abrasion powder removal lip 3, and the abrasion powder is applied to the seal lip 2 from the scratched portion. I will enter.
As a result, there is a problem that the seal lip 2 is also damaged and oil leaks to the sealed fluid side.
【０００５】さらに、シール面においてポーラスによる
油漏れが起きないよう、軸部を構造用炭素鋼等のポーラ
スの存在しない材料を使用し、着脱時に生じる傷の発生
を防ぐために浸炭焼入れ、高周波焼入れ、窒化等によっ
て表面硬化を施した後、送りをかけない研磨加工により
オイルシール面を製作しているため、コストが高くなる
問題があった。Further, in order to prevent oil leakage due to porous material on the sealing surface, the shaft portion is made of a material having no porous material such as structural carbon steel, and carburizing quenching, induction hardening, After the surface is hardened by nitriding or the like, the oil seal surface is manufactured by a polishing process that does not apply a feed.
【０００６】また、機械装置において、軸部分を有する
部材が複雑形状（単なる軸形状ではない）を有する場合
には、鋳鉄によって形成するため、表面にポーラスが存
在し、そのために、封孔処理を施さなければならなくな
り、コスト高となっていた。Further, in a mechanical device, when a member having a shaft portion has a complicated shape (not a simple shaft shape), it is formed of cast iron, so that a porous surface exists on the surface. It had to be done, which was costly.
【０００７】本発明は、これらの問題を解決し安価で安
定的なシール性能を確保することができるオイルシール
を提供することを目的とする。SUMMARY OF THE INVENTION An object of the present invention is to provide an oil seal which can solve these problems and can secure an inexpensive and stable sealing performance.
【０００８】[0008]
【課題を解決するための手段】上記の目的は、環状芯金
に弾性体からなるシールリップが設けられ、該シールリ
ップに隣接して摩耗紛除去リップを設けたオイルシール
において、前記シールリップ及び摩耗紛除去リップに摺
接するスリーブを有し、該スリーブが内径側に弾性体か
らなる皮膜を形成し軸部材に嵌着される円筒部と、該円
筒部の軸方向内側端部から半径方向外側にフランジ部と
を有し、該フランジ部がオイルシール端部との隙間でラ
ビリンスを形成することにより達成することができる。An object of the present invention is to provide an oil seal in which an annular cored bar is provided with a seal lip made of an elastic body, and a wear dust removing lip is provided adjacent to the seal lip. A cylindrical portion that has a sleeve that is in sliding contact with the abrasion powder removing lip, the sleeve forms an elastic film on the inner diameter side, and is fitted to the shaft member; and a radially outer portion from the axially inner end of the cylindrical portion. And a flange portion, and the flange portion forms a labyrinth in a gap with an oil seal end portion.
【０００９】このスリーブを有するオイルシールによれ
ば、内径側に弾性体からなる皮膜を形成したスリーブの
円筒部を軸部材に嵌着したので、軸部材の材料表面にピ
ンホールやポーラスがあっても高い密封性能が得られ
る。したがって、軸部材の表面性状を表面硬化、研磨加
工等の特別な加工が必要ないため、安価に製作できる。According to the oil seal having the sleeve, since the cylindrical portion of the sleeve having the coating made of the elastic body formed on the inner diameter side is fitted to the shaft member, the material surface of the shaft member has pinholes and porosity. Also high sealing performance can be obtained. Therefore, special processing such as surface hardening and polishing processing is not required for the surface properties of the shaft member, so that the shaft member can be manufactured at low cost.
【００１０】さらに、スリーブのフランジ部がオイルシ
ールの外周端部との隙間によりラビリンスを形成するこ
とにより、潤滑剤に含まれる大きな粒の摩耗紛がラビリ
ンスと摩耗紛除去リップとスリーブのフランジ部に囲ま
れた部分に侵入して摩耗紛除去リップを傷付けるのを防
ぐと共にラビリンスを通過する摩耗紛が摩耗紛除去リッ
プに到達するのを遅延させることができる。Further, since the flange portion of the sleeve forms a labyrinth by a gap with the outer peripheral end portion of the oil seal, a large amount of abrasion powder contained in the lubricant is applied to the labyrinth, the abrasion removal lip, and the flange portion of the sleeve. It is possible to prevent the wear dust removing lip from invading the enclosed portion and to prevent the wear dust passing through the labyrinth from reaching the wear dust removing lip.
【００１１】また、請求項２に記載のように、摩耗紛除
去リップがスリーブのフランジ部に摩耗紛の進入方向及
びフランジ部外周側に向けて摺接するようにしたので、
接触部で周速差が生じ、摩耗紛を外部に押し戻すよう圧
力差および遠心力が生じる。したがって、摩耗紛除去リ
ップへ到達した摩耗紛が摩耗紛除去リップを通過する確
率は非常に低く高い摩耗紛防止効果が得られる。Further, as described in claim 2, the abrasion powder removing lip is slidably contacted with the flange portion of the sleeve in the direction in which the abrasion powder enters and toward the outer peripheral side of the flange portion.
A peripheral speed difference is generated at the contact portion, and a pressure difference and a centrifugal force are generated to push the wear powder back to the outside. Therefore, the probability that the wear powder reaching the wear powder removal lip passes through the wear powder removal lip is extremely low, and a high wear powder prevention effect can be obtained.
【００１２】[0012]
【発明の実施の形態】以下、本発明の実施の形態につい
て図面に基づいて説明する。図１において、１０は本発
明に係るオイルシールを備えた遊星差動型歯車減速機で
あり、この減速機１０の一側にモータが固定されるよう
になっている。Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 10 denotes a planetary differential gear reducer provided with an oil seal according to the present invention, and a motor is fixed to one side of the reducer 10.
【００１３】１７は減速機１０の軸部材としての支持体
であり、複数の柱部２３を有する基円板２２と、柱部２
３の端部に当接し、締結ピン（図示せず）や締結ボルト
２４によって結合される端板２５とからなる。Reference numeral 17 denotes a support as a shaft member of the speed reducer 10, and a base disk 22 having a plurality of pillars 23 and a pillar 2
3 and an end plate 25 abutted by a fastening pin (not shown) or a fastening bolt 24.
【００１４】基円板２２には、軸受用孔２２aと、中心
部にモータの出力回転軸に結合される入力回転軸２６を
嵌挿させる中心孔２２bが設けられている。また、端板
２５には、前述の基円板に形成した軸受用孔及び中央孔
に対応して、軸受孔２５a及び中央孔２５bを形成されて
いる。The base disk 22 is provided with a bearing hole 22a and a center hole 22b at the center for receiving an input rotary shaft 26 coupled to an output rotary shaft of the motor. The end plate 25 has a bearing hole 25a and a center hole 25b corresponding to the bearing hole and the center hole formed in the base disk.
【００１５】軸受用孔２２a、２５aには、一体的に形成
され、１８０°偏心位相の異なる２つの偏心体２７a、
２７bを有する偏心体軸２７が軸受２８を介して回転支
持されている。また、偏心体２７a、２７bには、各外歯
歯車３０が軸受２９を介して嵌合されている。In the bearing holes 22a, 25a, two eccentric bodies 27a, which are integrally formed and differ in eccentric phase by 180 °, are provided.
An eccentric shaft 27 having 27b is rotatably supported via a bearing 28. The external gears 30 are fitted to the eccentric bodies 27a and 27b via bearings 29.
【００１６】外歯歯車の外周にはエピトロコイド歯形が
形成されており、ハウジングとしての内歯歯車１６の内
周に形成された内歯３１に外歯歯車３０が噛み合ってい
る。内歯歯車１６は、支持体１７を主軸受３２によって
支持している。An epitrochoidal tooth profile is formed on the outer periphery of the external gear, and the external gear 30 meshes with the internal teeth 31 formed on the inner periphery of the internal gear 16 as a housing. The internal gear 16 supports the support 17 with a main bearing 32.
【００１７】入力回転軸２６の他側には入力歯車３３が
形成され、この入力歯車３３に噛み合い偏心体軸２７の
他側に取り付けられる三つの伝達歯車３４に入力回転軸
２６の回転が両歯車３３、３４の歯数比に応じて減速し
て伝達される。An input gear 33 is formed on the other side of the input rotary shaft 26. The three transmission gears 34 which are engaged with the input gear 33 and are mounted on the other side of the eccentric shaft 27 rotate the input rotary shaft 26 with both gears. The transmission is performed at a reduced speed according to the gear ratio of the gears 33 and 34.
【００１８】減速機１０の他側の内歯歯車１６と支持体
１７との間には、本発明に係るオイルシール１１が設け
られている。オイルシール１１の拡大図を図２に示す。An oil seal 11 according to the present invention is provided between the support 17 and the internal gear 16 on the other side of the speed reducer 10. FIG. 2 is an enlarged view of the oil seal 11.
【００１９】図２において、このオイルシール１１は、
環状芯金１５に弾性体からなるシールリップ１２と、こ
のシールリップ１２の軸方向内側に隣接して歯車等の噛
み合せによって発生する摩耗紛をシールリップ１２に進
入することを防ぐための摩耗紛除去リップ１３と、外部
からの異物の進入を除去するダストリップ１４と、支持
体１７に嵌着されこれらリップと摺接するスリーブ１８
と、を有している。In FIG. 2, the oil seal 11 is
A seal lip 12 made of an elastic material is attached to the annular core 15, and abrasion powder generated by engagement of a gear or the like adjacent to the inside of the seal lip 12 in the axial direction is prevented from entering the seal lip 12. A lip 13; a dust lip 14 for removing foreign matter entering from outside; and a sleeve 18 fitted on the support 17 and in sliding contact with these lips.
And
【００２０】スリーブ１８は、内径側にゴム等の弾性体
からなる皮膜２１を形成し、支持体１７の外周に嵌着さ
れる円筒部１９と、この円筒部１９の軸方向内側端部か
ら半径方向外側に延びるフランジ部２０と、を有してい
る。スリーブ１８の材質はＳＰＣ、ＳＵＳ材等の圧延鋼
板からなり、プレス加工、絞り加工等によって形成され
る。よって、スリーブ１８のシールリップ１２及び摩耗
紛除去リップ１３の摺接面にはピンホールやポーラスが
なく特別な機械加工を施す必要がなくなり、かつ、軸部
材１７を鋳鉄等のピンホールやポーラスのある材料で製
作しても、密封性能を確保できる。The sleeve 18 has a coating 21 made of an elastic material such as rubber on the inner diameter side, and has a cylindrical portion 19 fitted on the outer periphery of the support 17 and a radius from the axially inner end of the cylindrical portion 19. And a flange portion 20 extending outward in the direction. The material of the sleeve 18 is made of a rolled steel plate such as an SPC or SUS material, and is formed by pressing, drawing, or the like. Therefore, there is no need to perform special machining because there are no pinholes or porosity on the sliding surfaces of the seal lip 12 and the abrasion powder removing lip 13 of the sleeve 18, and the shaft member 17 is formed of a pinhole or porous material such as cast iron. Even if it is made of a certain material, sealing performance can be ensured.
【００２１】また、フランジ部２０の放射外方端部と、
オイルシールの外周端部及び内歯歯車の内周との間に
は、小さな隙間を設けラビリンスを形成するようにして
いる。これにより粒の大きな摩耗粉が摩耗紛除去リップ
へ到達して該リップを傷付けさらにここを摩耗紛が通り
抜けてシールリップ部に到達しシールリップを傷付ける
ことにより油漏れが発生するのを防いでいる。Also, a radially outer end of the flange portion 20;
A small gap is provided between the outer peripheral end of the oil seal and the inner periphery of the internal gear to form a labyrinth. As a result, abrasion powder having a large particle reaches the abrasion powder removing lip and damages the lip. Further, the abrasion powder passes through the lip to reach the seal lip portion and damage the seal lip, thereby preventing oil leakage from occurring. .
【００２２】さらに、摩耗紛除去リップがスリーブのフ
ランジ部に摩耗紛の進入方向及びフランジ部外周側に向
けて摺接するようにしたので、接触部で周速差が生じ、
摩耗紛を外部に押し戻すよう圧力差および遠心力が生じ
る。したがって、摩耗紛除去リップへ到達した摩耗紛が
摩耗紛除去リップを通過する確率は非常に低く高い摩耗
紛防止効果が得られる。Further, since the wear powder removing lip slides on the flange portion of the sleeve toward the direction in which the wear powder enters and the outer peripheral side of the flange portion, a peripheral speed difference occurs at the contact portion,
A pressure difference and a centrifugal force are generated to push the wear powder back to the outside. Therefore, the probability that the wear powder reaching the wear powder removal lip passes through the wear powder removal lip is extremely low, and a high wear powder prevention effect can be obtained.
【００２３】さらに、スリーブをオイルシール本体に組
み付けることが可能になったことにより、機械装置にオ
イルシール装着時に発生するリップのめくれ、リップ面
の損傷を防止することができる。Further, since the sleeve can be assembled to the oil seal main body, it is possible to prevent the lip from being turned up and the lip surface from being damaged when the oil seal is attached to the mechanical device.
【００２４】また、シールリップ１２とダストリップ１
４との間の空間、及び、シールリップ１２と摩耗紛除去
リップ１３との間の空間にリチウム系などの潤滑剤を封
入することにより、リップの早期摩耗を防止している。
これらの空間に封入する潤滑剤は、機械装置内部に封入
される潤滑剤よりも硬い潤滑剤とすることが好ましい。The seal lip 12 and the dust lip 1
4 and the space between the seal lip 12 and the abrasion powder removing lip 13 are sealed with a lubricant such as a lithium-based lubricant to prevent early wear of the lip.
The lubricant sealed in these spaces is preferably a harder lubricant than the lubricant sealed inside the mechanical device.
【００２５】さらに、機械装置の外部環境が粉塵等のな
い清浄な場合は、ダストリップを省略してもよい。Further, when the external environment of the mechanical device is clean without dust or the like, the dust lip may be omitted.
【００２６】[0026]
【発明の効果】請求項１の発明によれば、内径側に弾性
体からなる皮膜を形成した円筒部を軸部材に嵌着したの
で、軸部材の材料表面にピンホールやポーラスがあって
も高い密封性能を得ることができる。また、軸部材の表
面性状を表面硬化、研磨加工等の特別な加工が必要ない
ため、安価に製作できる。According to the first aspect of the present invention, since the cylindrical portion having the coating formed of the elastic body formed on the inner diameter side is fitted to the shaft member, even if the material surface of the shaft member has a pinhole or a porous material. High sealing performance can be obtained. Further, since special processing such as surface hardening and polishing is not required for the surface properties of the shaft member, it can be manufactured at low cost.
【００２７】さらに、フランジ部がオイルシールの外周
端部によりラビリンスを形成することにより、潤滑剤に
含まれる大きな摩耗紛が通過して摩耗紛除去リップに到
達し該リップを傷付けるのを防止すると共に摩耗紛が摩
耗紛除去リップに到達するのを遅延させる。Furthermore, since the flange portion forms a labyrinth with the outer peripheral end portion of the oil seal, it is possible to prevent large wear powder contained in the lubricant from passing through to reach the wear powder removal lip and damage the lip. Delays the abrasion powder from reaching the abrasion removal lip.
【００２８】請求項２の発明によれば、摩耗紛除去リッ
プをスリーブのフランジ部分に外向きに当接することに
より接触面内で周速差が生じ、これにより、接触面内
で、摩耗紛除去リップに到達した摩耗紛を外部に押し戻
すような圧力差及び摩耗紛除去リップから摩耗粉を遠ざ
けるような遠心力が生じ、安定的なシール性能を得るこ
とができる。According to the second aspect of the present invention, a peripheral speed difference is generated in the contact surface by abutting the wear powder removing lip outwardly on the flange portion of the sleeve, thereby removing the wear powder in the contact surface. A pressure difference that pushes the wear powder that has reached the lip back to the outside and a centrifugal force that moves the wear powder away from the wear powder removal lip are generated, and stable sealing performance can be obtained.
【図１】本発明のオイルシールの断面図FIG. 1 is a sectional view of an oil seal of the present invention.
【図２】図１のオイルシールを備えた遊星差動型歯車減
速機の断面図FIG. 2 is a sectional view of a planetary differential gear reducer provided with the oil seal of FIG. 1;
【図３】従来のオイルシールの断面図FIG. 3 is a sectional view of a conventional oil seal.
１０ 遊星歯車減速機 １１ オイルシール １２ シールリップ １３ 摩耗紛除去リップ １４ ダストリップ １５ 環状芯金 １６ 内歯歯車（ハウジング） １７ 支持体（軸部材） １８ スリーブ １９ 円筒体 ２０ フランジ部 ２１ 皮膜 Reference Signs List 10 planetary gear reducer 11 oil seal 12 seal lip 13 abrasion removal lip 14 dust lip 15 annular core 16 internal gear (housing) 17 support (shaft member) 18 sleeve 19 cylindrical body 20 flange portion 21 coating
Claims (2)
が設けられ、該シールリップに隣接して摩耗紛除去リッ
プを設けたオイルシールにおいて、前記シールリップ及
び摩耗紛除去リップに摺接するスリーブを有し、該スリ
ーブが内径側に弾性体からなる皮膜を形成し軸部材に嵌
着される円筒部と、該円筒部の軸方向端部から半径方向
外側に延在するフランジ部とを有し、該フランジ部とオ
イルシールの外周端部とによりラビリンスを形成するこ
とを特徴とするオイルシール。In an oil seal having a seal lip made of an elastic body provided on an annular core metal and a wear dust removing lip provided adjacent to the seal lip, a sleeve that slides on the seal lip and the wear dust remove lip is provided. The sleeve has a cylindrical portion formed with a film made of an elastic body on the inner diameter side and fitted to the shaft member, and a flange portion extending radially outward from the axial end of the cylindrical portion. An oil seal, wherein a labyrinth is formed by the flange portion and an outer peripheral end of the oil seal.
部の外周に摺接し、上記摩耗紛除去リップのフランジ部
への当接部が放射方向外側に向いて、フランジ部に摺接
することを特徴とする請求項１記載のオイルシール。2. The method according to claim 1, wherein the seal lip is in sliding contact with the outer periphery of the cylindrical portion of the sleeve, and the contact portion of the wear dust removing lip with the flange portion is directed outward in the radial direction and is in sliding contact with the flange portion. The oil seal according to claim 1, wherein
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001028906A JP2002228009A (en) | 2001-02-05 | 2001-02-05 | Oil seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001028906A JP2002228009A (en) | 2001-02-05 | 2001-02-05 | Oil seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002228009A true JP2002228009A (en) | 2002-08-14 |
Family
ID=18893320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001028906A Pending JP2002228009A (en) | 2001-02-05 | 2001-02-05 | Oil seal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002228009A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6692007B2 (en) | 2001-10-31 | 2004-02-17 | Transcom, Inc. | Seal for a shaft |
| US6726212B2 (en) | 1997-09-25 | 2004-04-27 | Transcom, Inc. | Retrofittable severe duty seal for a shaft |
| JP2004308730A (en) * | 2003-04-04 | 2004-11-04 | Uchiyama Mfg Corp | Combined seal and bearing unit |
| JP2005257031A (en) * | 2004-03-15 | 2005-09-22 | Nabtesco Corp | Planetary gear device with sealing device |
| JP2009085420A (en) * | 2007-10-03 | 2009-04-23 | Nok Corp | Sealing device |
| US7658386B2 (en) | 1997-09-25 | 2010-02-09 | Freudenberg-Nok General Partnership | Retrofittable severe duty seal for a shaft |
| JP2018119681A (en) * | 2017-01-23 | 2018-08-02 | ナブテスコ株式会社 | Seal structure of rotary machine, rotary machine, and seal member |
| CN111981130A (en) * | 2019-05-23 | 2020-11-24 | 纳博特斯克有限公司 | Sealing structure, speed reducer, and method for manufacturing sealing structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01174680U (en) * | 1988-05-30 | 1989-12-12 | ||
| JPH03105767U (en) * | 1990-02-16 | 1991-11-01 | ||
| JPH04101021U (en) * | 1991-02-05 | 1992-09-01 | 株式会社不二越 | Sealing device for rolling bearings |
| JP2001020949A (en) * | 1999-07-08 | 2001-01-23 | Koyo Seiko Co Ltd | Bearing device for drive shaft |
-
2001
- 2001-02-05 JP JP2001028906A patent/JP2002228009A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01174680U (en) * | 1988-05-30 | 1989-12-12 | ||
| JPH03105767U (en) * | 1990-02-16 | 1991-11-01 | ||
| JPH04101021U (en) * | 1991-02-05 | 1992-09-01 | 株式会社不二越 | Sealing device for rolling bearings |
| JP2001020949A (en) * | 1999-07-08 | 2001-01-23 | Koyo Seiko Co Ltd | Bearing device for drive shaft |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6726212B2 (en) | 1997-09-25 | 2004-04-27 | Transcom, Inc. | Retrofittable severe duty seal for a shaft |
| US7658386B2 (en) | 1997-09-25 | 2010-02-09 | Freudenberg-Nok General Partnership | Retrofittable severe duty seal for a shaft |
| US6692007B2 (en) | 2001-10-31 | 2004-02-17 | Transcom, Inc. | Seal for a shaft |
| JP2004308730A (en) * | 2003-04-04 | 2004-11-04 | Uchiyama Mfg Corp | Combined seal and bearing unit |
| JP4503237B2 (en) * | 2003-04-04 | 2010-07-14 | 内山工業株式会社 | Combination seal and bearing unit |
| JP2005257031A (en) * | 2004-03-15 | 2005-09-22 | Nabtesco Corp | Planetary gear device with sealing device |
| JP2009085420A (en) * | 2007-10-03 | 2009-04-23 | Nok Corp | Sealing device |
| JP2018119681A (en) * | 2017-01-23 | 2018-08-02 | ナブテスコ株式会社 | Seal structure of rotary machine, rotary machine, and seal member |
| CN111981130A (en) * | 2019-05-23 | 2020-11-24 | 纳博特斯克有限公司 | Sealing structure, speed reducer, and method for manufacturing sealing structure |
| JP2020190308A (en) * | 2019-05-23 | 2020-11-26 | ナブテスコ株式会社 | Seal structure, speed reducer and method for manufacturing seal structure |
| JP7398209B2 (en) | 2019-05-23 | 2023-12-14 | ナブテスコ株式会社 | Seal structure, reducer, and manufacturing method of seal structure |
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