JPH08135799A - Sealing device - Google Patents
Sealing deviceInfo
- Publication number
- JPH08135799A JPH08135799A JP6301498A JP30149894A JPH08135799A JP H08135799 A JPH08135799 A JP H08135799A JP 6301498 A JP6301498 A JP 6301498A JP 30149894 A JP30149894 A JP 30149894A JP H08135799 A JPH08135799 A JP H08135799A
- Authority
- JP
- Japan
- Prior art keywords
- seal
- fluid
- seal member
- sealed
- 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.)
- Granted
Links
Landscapes
- Sealing With Elastic Sealing Lips (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、たとえば各種内燃機関
の回転部等に用いられる密封装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sealing device used, for example, in a rotating part of various internal combustion engines.
【０００２】[0002]
【従来の技術】従来からエンジンの回転部に用いる密封
装置としては、一般的にオイルシールが使用されていた
が、エンジンの傾斜等に伴い、エンジンオイルがリップ
を広げるように作用し、オイル漏れが発生するおそれが
あった。2. Description of the Related Art Conventionally, an oil seal has been generally used as a sealing device used in a rotating part of an engine. However, due to an inclination of the engine, the engine oil acts to spread the lip and causes an oil leak. Could occur.
【０００３】そこで、従来から、シールリップに直接オ
イルがかからぬように、図２(ａ)に示すように、第１シ
ール部材としてのオイルシール１０１の密封対象流体側
に、第２シール部材としての油よけシール１０２を取り
付ける方法が提案されている。Therefore, in order to prevent oil from directly contacting the seal lip, as shown in FIG. 2 (a), the second seal member has been provided on the fluid to be sealed side of the oil seal 101 as the first seal member. A method of attaching the oil-retaining seal 102 has been proposed.
【０００４】油よけシール１０２には、オイルシール１
０１の主シールリップ１０３の潤滑を図るために、密封
対象流体としての油を、油よけシール１０２とオイルシ
ール１０１間の空間１０４に導入するための連通孔１０
５が設けられていた。The oil seal 102 includes an oil seal 1
Communication hole 10 for introducing oil as a fluid to be sealed into the space 104 between the oil-retaining seal 102 and the oil seal 101 in order to lubricate the main seal lip 103 of No. 01.
5 was provided.
【０００５】[0005]
【発明が解決しようとする課題】しかし、このような従
来の方法では、オイルシール１０１と油よけシール１０
２を、それぞれ組み付ける必要があり、組み付け工程が
２回必要になるという欠点があった。However, according to such a conventional method, the oil seal 101 and the oil barrier seal 10 are used.
It was necessary to assemble each of the two, and there was a drawback that the assembly process was required twice.
【０００６】そこで、組み付けが一回で済むように、図
２(ｂ)に示すように、油よけシール１０２を従来タイプ
のオイルシール１０１の内側に組み付ける方法が提案さ
れている。Therefore, a method has been proposed in which, as shown in FIG. 2 (b), the oil shield 102 is assembled inside a conventional type oil seal 101 so that the assembly can be done only once.
【０００７】しかし、このような方法では、油よけシー
ル１０２のスペースに制限が生じるので、油よけシール
１０２に連通孔１０５として大きな穴が開けられず、主
シールリップ１０３への油の供給が十分できない。その
ため、潤滑切れを起こして摺動発熱が大きくなるという
問題があった。However, in such a method, the space of the oil-repellent seal 102 is limited, so that a large hole cannot be formed in the oil-repellent seal 102 as the communication hole 105, and the oil is supplied to the main seal lip 103. Can't do enough. Therefore, there is a problem that lubrication is broken and sliding heat is increased.
【０００８】本発明は、上記した従来技術の問題点を解
決するためになされたもので、その目的とするところ
は、組み付けを一回ででき、しかも第２シール部材に形
成する連通孔を十分大きくとって主シールリップの潤滑
切れを防止し得る密封装置を提供することにある。The present invention has been made in order to solve the above-mentioned problems of the prior art. The object of the present invention is that the assembly can be carried out only once and the communication hole formed in the second seal member is sufficient. It is an object of the present invention to provide a sealing device which is large and can prevent the main seal lip from running out of lubrication.
【０００９】[0009]
【課題を解決するための手段】上記目的を達成するため
に、本発明にあっては、回転軸外周に摺動自在に密封接
触する主シールリップを備えた第１シール部材と、該第
１シール部材の密封対象流体側に配置された第２シール
部材と、を備えた密封装置において、前記第２シール部
材は、ハウジング内周に嵌着される外筒部と、該外筒部
の密封対象流体側端縁から半径方向内方に向かって延び
る内向きフランジ部と、内向きフランジ部の内径端に設
けられ回転軸外周に摺動自在に密封接触するシールリッ
プと、外筒部の密封対象流体側端縁の外周に設けられた
段部と、該段部に一体的に設けられるゴム状弾性体製の
外周シール部と、前記内向きフランジ部に設けられ密封
対象流体側と第１及び第２シール部材間の空間を連通す
る連通孔と、を具備し、前記第１シール部材は、前記第
２シール部材の外筒部内周に嵌着したことを特徴とす
る。In order to achieve the above object, in the present invention, a first seal member having a main seal lip slidably sealingly contacting the outer circumference of a rotary shaft, and the first seal member are provided. In a sealing device including a second sealing member arranged on the fluid to be sealed side of the sealing member, the second sealing member includes an outer cylinder part fitted to an inner circumference of the housing, and a sealing of the outer cylinder part. An inward flange that extends inward in the radial direction from the target fluid side edge, a seal lip that is provided at the inner diameter end of the inward flange and slidably sealingly contacts the outer circumference of the rotating shaft, and the outer cylinder is sealed. A step provided on the outer periphery of the end edge on the target fluid side, an outer peripheral seal part made of a rubber-like elastic body integrally provided on the step, and a sealed target fluid side provided on the inward flange part And a communication hole that communicates the space between the second seal members. And, wherein the first sealing member is characterized in that fitted to the outer cylinder portion circumference of the second seal member.
【００１０】[0010]
【作用】本発明にあっては、第１シール部材の主シール
リップに対し、主シールリップを押し広げるように作用
する密封対象流体がこないようにするために、密封対象
流体側に第２シール部材を設置している。密封対象流体
は、第２シール部材によって遮断され、第１シール部材
に直接作用しないので、主シールリップが開くことはな
い。According to the present invention, in order to prevent the fluid to be sealed which acts to spread the main seal lip from coming into contact with the main seal lip of the first seal member, the second seal is placed on the fluid side to be sealed. Members are installed. The fluid to be sealed is blocked by the second seal member and does not act directly on the first seal member, so the main seal lip does not open.
【００１１】また、軸回転時の摺動発熱を抑えるため
に、潤滑油は必要である。このため、第２シール部材に
は、密封対象流体側と第１シール部材と第２シール部材
間の空間を連通する連通孔が必要である。この連通孔よ
り油等の密封対象流体が入ることにより、主シールリッ
プの潤滑が保持され、また、上記第２シール部材のシー
ルリップを通過したスラッジやシールリップの摩耗粉等
が、密封対象流体の循環に伴い連通孔から排出される。Lubricating oil is necessary in order to suppress sliding heat generation during shaft rotation. Therefore, the second seal member needs a communication hole that communicates the space to be sealed with the space between the first seal member and the second seal member. When the fluid to be sealed such as oil enters through the communication hole, the lubrication of the main seal lip is maintained, and the sludge that has passed through the seal lip of the second seal member, the abrasion powder of the seal lip, and the like are the fluid to be sealed. Is discharged from the communication hole with the circulation of.
【００１２】この第２シール部材の金属環の内側にオイ
ルシールを装着する構成とすることにより、スペースが
確保され、金属環に十分大きな連通孔をあけることがで
きる。By providing the oil seal inside the metal ring of the second seal member, a space can be secured and a sufficiently large communication hole can be formed in the metal ring.
【００１３】第２シール部材の外筒部は第１シール部材
を保持し、さらに密封対象流体側に延びているために全
長が長くなり、ハウジングの軸孔内に挿入しづらくなる
が、挿入方向先端側に段部を設けて細くなっているの
で、スムーズに挿入できる。そして、段部に設けたゴム
状弾性体によって嵌合部が確実にシールされる。The outer cylinder portion of the second seal member holds the first seal member and further extends toward the fluid to be sealed, so that the total length becomes long and it is difficult to insert the shaft into the axial hole of the housing. It has a step on the tip side and is thin, so it can be inserted smoothly. Then, the fitting portion is reliably sealed by the rubber-like elastic body provided on the step portion.
【００１４】[0014]
【実施例】以下に本発明を図示の実施例に基づいて説明
する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the illustrated embodiments.
【００１５】図１は本発明の一実施例に係る密封装置を
示している。図中、１は密封装置全体を示すもので、こ
の密封装置は、主シールリップ１１を備えた第１シール
部材１０と、第１シール部材１０の密封対象流体側Ｏに
配置された第２シール部材２０と、から構成されてい
る。FIG. 1 shows a sealing device according to an embodiment of the present invention. In the figure, reference numeral 1 denotes the entire sealing device, which includes a first seal member 10 having a main seal lip 11 and a second seal disposed on the fluid to be sealed side O of the first seal member 10. And a member 20.
【００１６】第２シール部材２０は、金属環２１と、金
属環２１の内径に一体的に設けられ回転軸３に摺動自在
に密封接触するゴム状弾性体製のシールリップ２２と、
を備えている。The second seal member 20 includes a metal ring 21 and a seal lip 22 made of a rubber-like elastic body integrally provided on the inner diameter of the metal ring 21 and slidably sealingly contacting the rotary shaft 3.
It has.
【００１７】金属環２１は、概略、ハウジング２内周に
嵌着される外筒部２１１と、この外筒部２１１の密封対
象流体側端縁から半径方向内方に向かって延びる内向き
フランジ部２１２と、から構成されている。外筒部２１
１の大気側端縁には、半径方向外方に向かって張り出す
外向きフランジ部２１３が設けられ、ハウジング２の端
面２ｂに係合するようになっている。また、外筒部２１
１の密封対象流体側端縁には、一段小径に縮径された段
部２１４が設けられている。The metal ring 21 generally includes an outer cylinder portion 211 fitted around the inner circumference of the housing 2 and an inward flange portion extending inward in the radial direction from the end edge of the outer cylinder portion 211 on the fluid to be sealed side. And 212. Outer cylinder part 21
An outward flange portion 213 that projects outward in the radial direction is provided on the atmosphere-side end edge of 1, and is engaged with the end surface 2b of the housing 2. In addition, the outer cylinder portion 21
A step portion 214 having a diameter reduced by one step is provided on the end edge of the first fluid to be sealed.
【００１８】この段部２１４は、外筒部２１１のハウジ
ング２の軸孔２ａとの嵌合面から、軸方向密封対象流体
側に向かって徐々に縮径されるテーパ部２１４ａと、嵌
合面と平行に延びる直線部２１４ｂと、から構成され、
直線部２１４ｂと内向きフランジ部２１２との角部２１
４ｃはＲ形状となっている。The step portion 214 has a tapered portion 214a whose diameter is gradually reduced from the fitting surface of the outer cylindrical portion 211 with the shaft hole 2a of the housing 2 toward the fluid to be sealed in the axial direction, and the fitting surface. And a straight portion 214b extending in parallel with
Corner portion 21 between straight portion 214b and inward flange portion 212
4c has an R shape.
【００１９】そして、段部２１４には、ゴム状弾性体製
の外周シール部２３が設けられ、ハウジング２の軸孔２
ａ内周との嵌合部をシールしている。外周シール部２３
は軸方向に延びる環状のリップ形状で、段部２１４のテ
ーパ部２１４ａ，直線部２１４ｂ及びアール形状の角部
２１４ｃにかけて接合されており、外周がハウジング２
内周に流体密に接触する。さらに、この外周シール部２
３の密封対象流体側先端は、外筒部２１１の端部よりも
所定寸法だけ軸方向密封対象流体側Ｏに突出している。The stepped portion 214 is provided with an outer peripheral seal portion 23 made of a rubber-like elastic body, and the shaft hole 2 of the housing 2 is provided.
The fitting part with the inner periphery of a is sealed. Perimeter seal 23
Is an annular lip shape that extends in the axial direction, and is joined to the taper portion 214a, the straight portion 214b, and the rounded corner portion 214c of the step portion 214, and the outer circumference is the housing 2
Fluid-tightly contacts the inner circumference. Further, this outer peripheral seal portion 2
The end of the fluid 3 to be sealed on the side of the fluid to be sealed projects toward the fluid to be sealed side O in the axial direction by a predetermined dimension from the end of the outer tube portion 211.
【００２０】内向きフランジ部２１２には、密封対象流
体側Ｏと第１及び第２シール部材１０，２０間の空間３
０を連通する連通孔２４が設けられている。この連通孔
２４は外筒部２１との角部２１４ｃの付近から内向きフ
ランジ２１２の中央付近までの大きさの穴径で、外周シ
ール部２３の突出部２３ａが連通孔２４の開口縁に位置
している。The inward flange portion 212 has a space 3 between the fluid side O to be sealed and the first and second sealing members 10 and 20.
A communication hole 24 that communicates 0 is provided. The communication hole 24 has a hole diameter from the vicinity of the corner 214c with the outer cylinder portion 21 to the vicinity of the center of the inward flange 212, and the protruding portion 23a of the outer peripheral seal portion 23 is located at the opening edge of the communication hole 24. are doing.
【００２１】内向きフランジ部２１２の内径端は、軸方
向に向けて突出する方向に若干傾斜しており、この傾斜
部２１２ａに上記シールリップ２２が接合されている。
このシールリップ２２は、軸方向大気側Ａに傾斜してい
るが、大気側Ａでも密封対象流体側Ｏでもいずれでもよ
い。The inner diameter end of the inward flange portion 212 is slightly inclined in a direction projecting in the axial direction, and the seal lip 22 is joined to the inclined portion 212a.
The seal lip 22 is inclined toward the atmosphere side A in the axial direction, but may be on the atmosphere side A or the fluid to be sealed side O.
【００２２】第１シール部材１０は、いわゆるばね付き
外周ゴム形のオイルシールで、密封対象流体側Ｏに開く
断面略コ字形の環状部材で、第２シール部材２０の外筒
部２１１内周に嵌着される外周固定部１２と、内周側の
主シールリップ１１とを備えている。The first seal member 10 is a so-called outer peripheral rubber type oil seal with a spring, which is an annular member having a substantially U-shaped cross section which opens to the fluid side O to be sealed, and is provided on the inner periphery of the outer cylindrical portion 211 of the second seal member 20. An outer peripheral fixing portion 12 to be fitted and a main seal lip 11 on the inner peripheral side are provided.
【００２３】外周固定部１２は、ゴム状弾性体１３と、
このゴム状弾性体１３に埋設される金属環１４と、から
構成されている。金属環１４は、円筒部１４１と、円筒
部１４１の大気側端部から内向きに延びる内向きフラン
ジ部１４２と、から構成される断面Ｌ字形状で、円筒部
１４１が外周固定部１２のゴム状弾性体１３中に埋設さ
れ、内向きフランジ部１４２内端に主シールリップ１１
の基端部が一体的に接合されている。主シールリップ１
１のリップ先端部１１ａ外周にはばね部材１５が装着さ
れて、緊迫力が高められている。The outer peripheral fixing portion 12 includes a rubber-like elastic body 13 and
The metal ring 14 is embedded in the rubber-like elastic body 13. The metal ring 14 has an L-shaped cross section composed of a cylindrical portion 141 and an inward flange portion 142 that extends inward from the atmospheric side end portion of the cylindrical portion 141, and the cylindrical portion 141 is a rubber member of the outer peripheral fixing portion 12. Is embedded in the elastic body 13 and has a main seal lip 11 at the inner end of the inward flange portion 142.
The base ends of are joined together. Main seal lip 1
A spring member 15 is attached to the outer periphery of the lip tip portion 11a of No. 1 to enhance the tightening force.
【００２４】また、この主シールリップ１１の基端部に
は、大気側に向かって延びるダストリップ１６が設けら
れている。A dust lip 16 extending toward the atmosphere is provided at the base end of the main seal lip 11.
【００２５】本発明にあっては、第１シール部材１０の
主シールリップ１１に対し、密封対象流体が主シールリ
ップ１１に直接作用しないようにするために、密封対象
流体側Ｏに第２シール部材２０を設置している。密封対
象流体は、第２シール部材２０によって遮断され、第１
シール部材１０に直接作用しないので、油等の密封対象
流体によって主シールリップ１１が開くことはない。In the present invention, in order to prevent the fluid to be sealed from directly acting on the main seal lip 11 with respect to the main seal lip 11 of the first seal member 10, the second seal is provided on the fluid to be sealed side O. The member 20 is installed. The fluid to be sealed is blocked by the second seal member 20,
Since it does not directly act on the seal member 10, the main seal lip 11 is not opened by the fluid to be sealed such as oil.
【００２６】また、回転時の主シールリップ１１摺動面
の摺動発熱を抑えるために、潤滑油は必要である。この
ため、第２シール部材２０には、密封対象流体側Ｏと第
１，第２シール部材１０，２０間の空間３０を連通する
連通孔２４が必要である。この連通孔２４より油等の密
封対象流体が入ることにより、主シールリップ１１の潤
滑が保持され、また、第２シール部材２０のシールリッ
プ２２を通過したスラッジやシールリップ２２の摩耗粉
等は、密封対象流体の循環に伴い連通孔２４から排出さ
れる。Lubricating oil is necessary in order to suppress the sliding heat generation of the sliding surface of the main seal lip 11 during rotation. Therefore, the second seal member 20 needs the communication hole 24 that connects the space O to be sealed and the space 30 between the first and second seal members 10 and 20. When the fluid to be sealed such as oil enters through the communication hole 24, the lubrication of the main seal lip 11 is maintained, and the sludge passing through the seal lip 22 of the second seal member 20 and the abrasion powder of the seal lip 22 are removed. The fluid to be sealed is discharged from the communication hole 24 as the fluid to be sealed circulates.
【００２７】特に、本実施例では、連通孔２４の周囲を
取り囲むように、外周シール部２３の突出部２３ａが設
けられており、油等の密封対象流体が入りやすい。In particular, in this embodiment, the protruding portion 23a of the outer peripheral seal portion 23 is provided so as to surround the periphery of the communication hole 24, and the fluid to be sealed such as oil easily enters.
【００２８】このように、第２シール部材２０の金属環
２１の内側に第１シール部材１０を装着する構成とする
ことにより、スペースが確保され、金属環２１に十分大
きな連通孔２４をあけることができる。As described above, by providing the first seal member 10 inside the metal ring 21 of the second seal member 20, a space is secured and a sufficiently large communication hole 24 is formed in the metal ring 21. You can
【００２９】第２シール部材２０の外筒部２１１は第１
シール部材１０を保持し、さらに密封対象流体側Ｏに延
びているために全長が長くなり、ハウジング２の軸孔２
ａ内に挿入しづらくなるが、挿入方向先端側に段部２１
４を設けて細くなっているので、スムーズに挿入でき
る。The outer cylinder portion 211 of the second seal member 20 is the first
Since the seal member 10 is held and further extends to the fluid to be sealed side O, the total length becomes long, and the shaft hole 2 of the housing 2
Although it is difficult to insert it in a, the stepped portion 21
Since it is provided with 4, it can be inserted smoothly.
【００３０】そして、段部２１４に設けたゴム状弾性体
の外周シール部２３によって嵌合部が確実にシールされ
る。Then, the fitting portion is reliably sealed by the outer peripheral sealing portion 23 of the rubber-like elastic body provided on the step portion 214.
【００３１】また、第２シール部材２０の外筒部２１１
には段部２１４が設けられているので、第１シール部材
１０を組み付ける際に、第２シール部材２０に対する第
１シール部材１０の軸方向位置が定まる。Further, the outer cylinder portion 211 of the second seal member 20.
Since the step portion 214 is provided in the, the axial position of the first seal member 10 with respect to the second seal member 20 is determined when the first seal member 10 is assembled.
【００３２】さらに、密封装置１を抜き出す際には、フ
ランジ部２１３を引掛けて容易に取り外すことができ
る。Further, when the sealing device 1 is pulled out, the flange portion 213 can be hooked and easily removed.
【００３３】[0033]
【発明の効果】以上説明したように、本発明にあって
は、第１シール部材と第２シール部材を一体化したの
で、組み付け作業を一回でできると共に、部品点数も削
減することができる。As described above, according to the present invention, since the first seal member and the second seal member are integrated, the assembling work can be performed once and the number of parts can be reduced. .
【００３４】しかも、密封対象流体側と第１，第２シー
ル部材間の空間を連通する連通孔を、第２シール部材の
金属環の内向きフランジ部に設けたので、連通孔を十分
大きくとることができ、主シールリップの潤滑を十分行
うことができる。Moreover, since the communication hole for communicating the space between the fluid to be sealed and the first and second seal members is provided in the inward flange portion of the metal ring of the second seal member, the communication hole is sufficiently large. Therefore, the main seal lip can be sufficiently lubricated.
【００３５】また、第２シール部材の外筒部は第１シー
ル部材を保持し、さらに密封対象流体側に延びているた
めに全長が長くなり、ハウジングの軸孔内に挿入しづら
くなるが、挿入方向先端側に段部を設けて細くなってい
るので、スムーズに挿入できる。そして、段部に設けた
外周シール部によって嵌合部が確実にシールすることが
できる。Further, since the outer cylinder portion of the second seal member holds the first seal member and further extends toward the fluid to be sealed, its total length becomes long and it is difficult to insert it into the axial hole of the housing. A step is provided on the front end side in the insertion direction to make it thinner, so it can be inserted smoothly. Then, the fitting portion can be reliably sealed by the outer peripheral seal portion provided on the step portion.
【図１】図１は本発明の一実施例に係る密封装置を示す
図である。FIG. 1 is a diagram showing a sealing device according to an embodiment of the present invention.
【図２】図２(ａ)，(ｂ)は従来の密封装置を示す図であ
る。2A and 2B are views showing a conventional sealing device.
１ 密封装置 ２ ハウジング ３ 回転軸 １０ 第１シール部材 １１ 主シールリップ １１ａ リップ先端部 １２ 外周固定部 １３ ゴム状弾性体 １４ 金属環 １４１ 円筒部 １４２ 内向きフランジ部 １５ ばね部材 １６ ダストリップ ２０ 第２シール部材 ２１ 金属環 ２１１ 外筒部 ２１２ 内向きフランジ部 ２１３ 外向きフランジ部 ２１４ 段部 ２１４ａ テーパ部 ２１４ｂ 直線部 ２１４ｃ 角部 ２２ シールリップ ２３ 外周シール部 ２３ａ 突出部 ２４ 連通孔 Ｏ密封対象流体側 Ａ大気側 DESCRIPTION OF SYMBOLS 1 Sealing device 2 Housing 3 Rotating shaft 10 1st sealing member 11 Main seal lip 11a Lip tip part 12 Peripheral fixing part 13 Rubber-like elastic body 14 Metal ring 141 Cylindrical part 142 Inward flange part 15 Spring member 16 Dustrip 20 2nd Seal member 21 Metal ring 211 Outer cylinder part 212 Inward flange part 213 Outward flange part 214 Step part 214a Tapered part 214b Straight part 214c Corner part 22 Seal lip 23 Outer peripheral seal part 23a Projection part 24 Communication hole O Sealing target fluid side A Atmosphere side
Claims (1)
シールリップを備えた第１シール部材と、該第１シール
部材の密封対象流体側に配置された第２シール部材と、
を備えた密封装置において、 前記第２シール部材は、ハウジング内周に嵌着される外
筒部と、該外筒部の密封対象流体側端縁から半径方向内
方に向かって延びる内向きフランジ部と、内向きフラン
ジ部の内径端に設けられ回転軸外周に摺動自在に密封接
触するシールリップと、外筒部の密封対象流体側端縁の
外周に設けられた段部と、該段部に一体的に設けられる
ゴム状弾性体製の外周シール部と、前記内向きフランジ
部に設けられ密封対象流体側と第１及び第２シール部材
間の空間を連通する連通孔と、を具備し、 前記第１シール部材は、前記第２シール部材の外筒部内
周に嵌着したことを特徴とする密封装置。1. A first seal member having a main seal lip slidably sealingly contacting the outer circumference of a rotary shaft, and a second seal member arranged on the fluid to be sealed side of the first seal member.
In the sealing device including: the second seal member, wherein the second seal member has an outer cylindrical portion fitted to the inner circumference of the housing, and an inward flange extending inward in the radial direction from an end edge of the outer cylindrical portion on the fluid to be sealed side. Portion, a seal lip provided on the inner diameter end of the inward flange portion and slidably sealingly contacting the outer circumference of the rotating shaft, a step portion provided on the outer circumference of the fluid-side end edge of the outer cylinder portion, and the step. An outer peripheral seal portion made of a rubber-like elastic body integrally provided in the portion, and a communication hole provided in the inward flange portion and communicating the space between the fluid to be sealed and the first and second seal members. The sealing device is characterized in that the first seal member is fitted to the inner circumference of the outer tubular portion of the second seal member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30149894A JP3285287B2 (en) | 1994-11-10 | 1994-11-10 | Sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30149894A JP3285287B2 (en) | 1994-11-10 | 1994-11-10 | Sealing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08135799A true JPH08135799A (en) | 1996-05-31 |
| JP3285287B2 JP3285287B2 (en) | 2002-05-27 |
Family
ID=17897644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30149894A Expired - Fee Related JP3285287B2 (en) | 1994-11-10 | 1994-11-10 | Sealing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3285287B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003042304A (en) * | 2001-07-27 | 2003-02-13 | Nok Corp | Sealing device |
-
1994
- 1994-11-10 JP JP30149894A patent/JP3285287B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003042304A (en) * | 2001-07-27 | 2003-02-13 | Nok Corp | Sealing device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3285287B2 (en) | 2002-05-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5522600A (en) | Annular lubricant seal assembly with spring member | |
| EP0725224B1 (en) | Bearing | |
| US5597168A (en) | Single split oil seal | |
| EP0357246A2 (en) | Shaft seal arrangement of turbocharger | |
| US6056293A (en) | Sealing assembly for a rotary shaft, in particular of an automotive engine water pump | |
| US7314219B1 (en) | Shaft seal assembly | |
| EP0131402B1 (en) | Method of assembling a lubricating oil sealing apparatus in a turbocharger | |
| JP3253000B2 (en) | Ring seal device for turbocharger | |
| US5660521A (en) | Water pump seal coolant wick | |
| US6039322A (en) | Sealing arrangement | |
| JPH08135799A (en) | Sealing device | |
| JPH0530638U (en) | Sealing device | |
| US5647597A (en) | Retractable seal for oil-filled rotating machine | |
| JP3965559B2 (en) | Sealing device | |
| EP0611904A1 (en) | Rotary shaft seal with a protection and centering element | |
| JP2009115203A (en) | Constant velocity universal joint | |
| JPH0942168A (en) | Oil seal structure of vane pump driving shaft | |
| JP2598085Y2 (en) | Oil seal | |
| JPH0712762Y2 (en) | Sealing device | |
| JPH109400A (en) | Valve stem seal | |
| JP3359462B2 (en) | Sealing device | |
| JP2013170561A (en) | Sealing device of transmission case of engine | |
| JPH10246338A (en) | Oil seal | |
| JP2007308072A (en) | Propeller shaft for automobile | |
| EP0369952A1 (en) | Fluid sealing system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20020129 |
|
| LAPS | Cancellation because of no payment of annual fees |