JPH0520931Y2 - - Google Patents
Info
- Publication number
- JPH0520931Y2 JPH0520931Y2 JP1986152034U JP15203486U JPH0520931Y2 JP H0520931 Y2 JPH0520931 Y2 JP H0520931Y2 JP 1986152034 U JP1986152034 U JP 1986152034U JP 15203486 U JP15203486 U JP 15203486U JP H0520931 Y2 JPH0520931 Y2 JP H0520931Y2
- Authority
- JP
- Japan
- Prior art keywords
- lip
- rotating shaft
- circumferential surface
- rubber
- elastic material
- 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.)
- Expired - Lifetime
Links
- 238000007789 sealing Methods 0.000 claims description 24
- 239000004519 grease Substances 0.000 claims description 16
- 239000000314 lubricant Substances 0.000 claims description 16
- 239000000428 dust Substances 0.000 claims description 15
- 239000013013 elastic material Substances 0.000 claims description 14
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000004610 Internal Lubricant Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Landscapes
- Sealing With Elastic Sealing Lips (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は、互いに同芯に配置された回転軸及び
ハウジング間に配置される密封装置に関し、特
に、グリースを潤滑剤として高速回転する機械装
置に使用されて有効な密封装置に関する。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a sealing device disposed between a rotating shaft and a housing that are arranged concentrically with each other, and in particular to a mechanical device that rotates at high speed using grease as a lubricant. This invention relates to an effective sealing device used in
（従来の技術）
互いに同芯に配置された回転軸及びハウジング
間に密封手段としては、第２図に例示するよう
に、ゴム様弾性材料をもつて製せられ、回転軸１
の周面と弾性接触して内部潤滑剤の漏出及び外部
ダストの侵入を阻止する摺動リツプ７を有する密
封装置が広く使用されている。(Prior Art) As illustrated in FIG. 2, the sealing means between the rotating shaft and the housing which are arranged concentrically with each other is made of a rubber-like elastic material.
Sealing devices are widely used which have a sliding lip 7 which comes into elastic contact with the circumferential surface of the pipe to prevent the leakage of internal lubricant and the ingress of external dust.
（考案が解決しようとする問題点）
上記した従来例の密封装置は、回転軸１の周面
に対する摺動リツプ７の弾性接触によつて密封作
用をなすものであるために、両部材間に生起され
る摺動摩擦による問題が避けれない。(Problems to be Solved by the Invention) In the conventional sealing device described above, the sealing effect is achieved by the elastic contact of the sliding lip 7 with the circumferential surface of the rotating shaft 1. Problems caused by sliding friction cannot be avoided.
すなわち、摩擦によるトルクの損失がもたらさ
れるばかりでなく、摩擦熱による潤滑剤の粘度低
下による漏れの増加或は回転軸１の周面又は摺動
リツプ７の内周部の摩滅による密封機能の低下が
もたらされる。 That is, not only is there a loss of torque due to friction, but also an increase in leakage due to a decrease in the viscosity of the lubricant due to frictional heat, or a decrease in the sealing function due to wear of the circumferential surface of the rotating shaft 1 or the inner circumference of the sliding lip 7. is brought about.
本考案は、上記した問題点を解消して摩擦によ
るトルクの損失及び密封機能の低下を生じさせな
い密封装置の構造を提示することを目的とするも
のである。 It is an object of the present invention to provide a structure of a sealing device that eliminates the above-mentioned problems and prevents loss of torque and deterioration of sealing function due to friction.
（問題点を解決するための手段）
本考案は、上記した従来の技術による密封装置
における問題点を考慮して、互いに相対回転する
ハウジングと回転軸との間を密封する密封装置で
あつて、前記ハウジングに固定される基部と、該
基部から前記回転軸の周面との間に微少間隙を保
つて潤滑剤側へ向つて延び円錐形状に製せられる
ゴム状弾性材製グリースリツプと、前記基部から
前記回転軸の周面との間に微少間隙を保つて大気
側へ向つて延び円錐形状に製せられるゴム状弾性
材製ダストリツプ、及び前記グリースリツプと前
記ダストリツプとの間に前記回転軸の周面との間
に微少間隙を保つて存在する複数条のゴム条弾性
材製中間リツプを有する構成と成すものである。(Means for Solving the Problems) In consideration of the problems in the conventional sealing devices described above, the present invention provides a sealing device for sealing between a housing and a rotating shaft that rotate relative to each other, a base fixed to the housing; and a grease lip made of a rubber-like elastic material, which is formed into a conical shape and extends toward the lubricant side while maintaining a small gap from the base to the circumferential surface of the rotating shaft; A dust strip made of a rubber-like elastic material is formed into a conical shape and extends toward the atmosphere while maintaining a small gap between the base and the circumferential surface of the rotating shaft, and the rotating shaft is provided between the grease lip and the dust lip. It has a structure having a plurality of intermediate lips made of a rubber strip elastic material, which exist with a small gap between them and the circumferential surface of the tube.
内部リツプ、グリースリツプ及びダストリツプ
と回転軸の周面との間に微少隙間を0.5mm以下に
設定し、中間リツプと回転軸の周面との間の小隙
間を0.8mm以下に設定するのが効果的であること
が確認された。 It is best to set the small gap between the internal lip, grease lip, dust lip and the circumferential surface of the rotating shaft to 0.5 mm or less, and to set the small gap between the intermediate lip and the circumferential surface of the rotating shaft to 0.8 mm or less. It was confirmed to be effective.
（作用）
上記した構成を備えた密封装置においては、回
転軸の周面との間に微少隙間を保つて潤滑剤側に
配置されたフエルト材製内部リツプが軸受内部の
潤滑剤の流出を阻止し、回転軸の周面との間に微
少隙間を保つて内部リツプの隣に配置されたゴム
様弾性材料製グリースリツプの上部に付着した潤
滑剤等は第１図に示す如く、グリースリツプの外
周円錐面を伝つて回転軸周面に落下するときには
潤滑剤側に向う速度成分を有しており、グリース
リツプ３の内周端の軸方向直下に対し潤滑剤側に
落下した後に回転軸１の回転により振り切られる
ため、潤滑剤等が密封装置内へ戻り大気側へ漏洩
することを完全に阻止することができる。また、
回転軸の周面との間に小隙間を保つてグリースリ
ツプの隣に配列された複数条のゴム様弾性材料製
中間リツプが、ラビリンス効果によつて内部グリ
ースの漏出を阻止し、回転軸の周面との間に微少
隙間を保つて大気側に配置されたゴム様弾性材料
製ダストリツプが、前記グリースリツプと同様の
作用によつて第１図に示す如く、ダスト等が密封
装置へ戻り潤滑剤側へ侵入することを完全に阻止
することができる。(Function) In a sealing device with the above configuration, an internal lip made of felt material placed on the lubricant side with a small gap between it and the circumferential surface of the rotating shaft prevents the lubricant inside the bearing from flowing out. However, as shown in Figure 1, the lubricant adhering to the upper part of the grease lip made of rubber-like elastic material is placed next to the inner lip with a small gap between it and the circumferential surface of the rotating shaft. When it falls to the rotating shaft circumferential surface along the outer circumferential conical surface, it has a velocity component toward the lubricant side. Since the lubricant and the like are shaken off by the rotation of the sealing device, it is possible to completely prevent the lubricant and the like from returning to the sealing device and leaking to the atmosphere. Also,
A plurality of intermediate lips made of rubber-like elastic material are arranged next to the grease lip with a small gap between them and the circumferential surface of the rotating shaft, which prevents internal grease from leaking due to the labyrinth effect. A dust strip made of a rubber-like elastic material placed on the atmosphere side with a small gap between it and the surrounding surface acts in the same way as the grease lip, as shown in Figure 1, and dust returns to the sealing device for lubrication. It is possible to completely prevent the agent from entering the drug side.
従つて、本考案の密封装置は潤滑剤側及び大気
側の両方において完全に密封する能力を持つもの
である。 Therefore, the sealing device of the present invention has the ability to completely seal on both the lubricant side and the atmosphere side.
（実施例）
第１図の実施例においては、フエルト材をもつ
て略蛇の目形状に製せられ、回転軸１の周面との
間に微少隙間を形成する内部リツプ２が図上で左
方の潤滑剤側に配置され、内部リツプ２の隣に、
内部リツプ２側へ向つて先細の円錐形状に製せら
れ、回転軸１の周面との間に微少隙間を形成する
ゴム様弾性材料製グリースリツプ３が配置され、
グリースリツプ３の隣に、内方へ向つて突出し、
回転軸１の周面との間に小隙間を形成する２条の
ゴム様弾性材料製中間リツプ４が配列され、図上
で右方の大気側に、外方に向つて先細に形成され
て回転軸１の周面との間に微少隙間を形成するゴ
ム様弾性材料製ダストリツプ５が配置されてい
る。(Embodiment) In the embodiment shown in Fig. 1, the inner lip 2 is made of felt material and has a substantially snake-like shape, and forms a minute gap with the circumferential surface of the rotating shaft 1. located on the lubricant side of the
A grease lip 3 made of a rubber-like elastic material is disposed, which is made into a conical shape that tapers toward the inner lip 2 side, and forms a minute gap with the circumferential surface of the rotating shaft 1.
Next to the grease lip 3, protruding inwardly,
Two intermediate lips 4 made of a rubber-like elastic material are arranged to form a small gap with the circumferential surface of the rotating shaft 1, and are tapered outward on the right side of the figure toward the atmosphere. A dust strip 5 made of a rubber-like elastic material is arranged to form a small gap between the dust strip 5 and the circumferential surface of the rotating shaft 1.
（考案の効果）
本考案の密封装置が、上記したように、互いに
相対回転するハウジングと回転軸との間を密封す
る密封装置であつて、前記ハウジングに固定され
る基部と、該基部から前記回転軸の周面との間に
微少間隙を保つて潤滑剤側へ向つて延び円錐形状
に製せられるゴム状弾性材製グリースリツプと、
前記基部から前記回転軸の周面との間に微少間隙
を保つて大気側へ向つて延び円錐形状に製せられ
るゴム状弾性材製ダストリツプ、及び前記グリー
スリツプと前記ダストリツプとの間に前記回転軸
の周面との間に微少間隙を保つて存在する複数条
のゴム状弾性材製中間リツプを有する構成とする
ことにより、中間リツプのラビリンス作用によつ
て潤滑剤の漏出を防止し、グリースリツプにより
潤滑剤等が密封装置内へ戻り大気側へ漏出するこ
とを阻止し、更にダストリツプによつて外部ダス
トの侵入を阻止するため、潤滑剤及び大気側の両
方において完全に密封する能力を持つものであ
る。しかも、各リツプの内周端部が回転軸の周面
に接触していないので、摩擦によるトルクの損失
並びにリツプ先端部及び回転軸周面の摩滅が生じ
ず、長期間にわたつて正常な密封機能が保持され
る。(Advantages of the Invention) As described above, the sealing device of the present invention is a sealing device that seals between a housing and a rotating shaft that rotate relative to each other, and comprises a base portion fixed to the housing, a grease slip made of a rubber-like elastic material that extends from the base portion to the circumferential surface of the rotating shaft with a minute gap between the base portion and the circumferential surface of the rotating shaft and is formed into a cone shape toward the lubricant,
The device has a rubber-like elastic dust lip that extends from the base toward the atmosphere with a small gap between it and the circumferential surface of the rotating shaft and is formed into a cone shape, and a plurality of rubber-like elastic intermediate lips that exist between the grease lip and the dust lip and the circumferential surface of the rotating shaft with a small gap between them, thereby preventing leakage of the lubricant through the labyrinth action of the intermediate lip, preventing the lubricant, etc. from returning to the sealing device and leaking to the atmosphere with the grease lip, and preventing the intrusion of external dust with the dust lip, thereby providing a perfect seal on both the lubricant and atmosphere sides. Moreover, since the inner peripheral end of each lip does not contact the circumferential surface of the rotating shaft, there is no loss of torque due to friction and no wear of the lip tip and the circumferential surface of the rotating shaft, and the normal sealing function is maintained for a long period of time.
第１図は、本考案の一実施例の断面図、第２図
は、従来の技術による密封装置の一例の断面図で
ある。
１……回転軸、２……内部リツプ、３……グリ
ースリツプ、４……中間リツプ、５……ダストリ
ツプ、７……摺動リツプ。
FIG. 1 is a sectional view of an embodiment of the present invention, and FIG. 2 is a sectional view of an example of a conventional sealing device. 1... Rotating shaft, 2... Internal lip, 3... Grease lip, 4... Intermediate lip, 5... Dust lip, 7... Sliding lip.
Claims (1)
の間を密封する密封装置であつて、前記ハウジン
グ１０に固定される基部６と、該基部６から前記
回転軸１の周面との間に微少間隙を保つて潤滑剤
側へ向つて延び円錐形状に製せられるゴム状弾性
材製グリースリツプ３と、前記基部から前記回転
軸１の周面との間に微少間隙を保つて大気側へ向
つて延び円錐形状に製せられるゴム状弾性材製ダ
ストリツプ５、及び前記グリースリツプ３と前記
ダストリツプ５との間に前記回転軸１の周面との
間に微少間隙を保つて存在する複数条のゴム状弾
性材製中間リツプ４を有する密封装置。 This is a sealing device that seals between a housing 10 and a rotating shaft that rotate relative to each other, and has a small gap between a base 6 fixed to the housing 10 and the circumferential surface of the rotating shaft 1 from the base 6. A grease lip 3 made of a rubber-like elastic material is formed into a conical shape and extends toward the lubricant side while maintaining a slight gap between the base and the circumferential surface of the rotating shaft 1 and extends toward the atmosphere side. A dust lip 5 made of a rubber-like elastic material is made into a conical shape, and a plurality of rubber-like strips are present between the grease lip 3 and the dust lip 5 with a slight gap between them and the circumferential surface of the rotating shaft 1. A sealing device having an intermediate lip 4 made of elastic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986152034U JPH0520931Y2 (en) | 1986-10-02 | 1986-10-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986152034U JPH0520931Y2 (en) | 1986-10-02 | 1986-10-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6357863U JPS6357863U (en) | 1988-04-18 |
| JPH0520931Y2 true JPH0520931Y2 (en) | 1993-05-28 |
Family
ID=31069643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986152034U Expired - Lifetime JPH0520931Y2 (en) | 1986-10-02 | 1986-10-02 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0520931Y2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4545468B2 (en) * | 2004-03-26 | 2010-09-15 | 光洋シーリングテクノ株式会社 | Sealing device |
| JP2006083955A (en) * | 2004-09-16 | 2006-03-30 | Arai Pump Mfg Co Ltd | Sealing device |
| JP4718219B2 (en) * | 2005-03-30 | 2011-07-06 | 株式会社日立産機システム | Rotating electric machine with power transmission mechanism |
| JP5452397B2 (en) * | 2010-07-06 | 2014-03-26 | 住友重機械工業株式会社 | Seal structure |
| JP5936515B2 (en) * | 2012-10-18 | 2016-06-22 | 三菱日立パワーシステムズ株式会社 | Rotating machine |
| JP6340280B2 (en) * | 2014-07-30 | 2018-06-06 | 光洋シーリングテクノ株式会社 | Sealing device for axle bearing of railway vehicle |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58129368U (en) * | 1982-02-25 | 1983-09-01 | 三菱重工業株式会社 | Labyrinth Spatskin |
-
1986
- 1986-10-02 JP JP1986152034U patent/JPH0520931Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6357863U (en) | 1988-04-18 |
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