JPS62283261A - Combined seal - Google Patents
Combined sealInfo
- Publication number
- JPS62283261A JPS62283261A JP61125247A JP12524786A JPS62283261A JP S62283261 A JPS62283261 A JP S62283261A JP 61125247 A JP61125247 A JP 61125247A JP 12524786 A JP12524786 A JP 12524786A JP S62283261 A JPS62283261 A JP S62283261A
- Authority
- JP
- Japan
- Prior art keywords
- sealing
- sealing element
- seal
- outside
- tilt
- 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
- 238000007789 sealing Methods 0.000 claims abstract description 29
- 238000005452 bending Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 9
- 230000002093 peripheral effect Effects 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
Landscapes
- Sealing With Elastic Sealing Lips (AREA)
Abstract
Description
【発明の詳細な説明】
6、 発明の詳細な説明
〔産業上の利用分野〕
本発明は環体を組合せて相互に回転する二部材の内外を
密封せしめる組合せシールの改良に関し、具体的には前
記環体端部の形状改良に関するものである。[Detailed Description of the Invention] 6. Detailed Description of the Invention [Field of Industrial Application] The present invention relates to an improvement in a combination seal that combines annular bodies to seal the inside and outside of two mutually rotating members. This invention relates to improving the shape of the end portion of the ring body.
従来、この種の組合せシールとしては多くのものが開発
・実施されており、その例を上げると第ろ図に示す様に
、接触あるいは非接触のシールリップ6を有する環体4
と該環体4に組合せる補助環体5とで構成し、これの一
部分をカシメて一体化するかあるいはそのまま組付けて
組合せシールDとしている。このとき、絹合わされた環
体4.5の外側端部4′・5′はカシメ加工を施してい
れば内部に向くかまたは内周側に突出する形状となり、
単純に組付けたものでは加工後の荒い造形部を多く残し
て実用に付される。Conventionally, many combination seals of this type have been developed and put into practice, and an example of such a combination seal is as shown in FIG.
and an auxiliary ring body 5 to be combined with the ring body 4, and a combination seal D is made by either integrally caulking a part of these or by assembling them as is. At this time, if the outer ends 4' and 5' of the ring body 4.5 are crimped, they will face inward or protrude toward the inner circumference,
If it is simply assembled, it will be put into practical use with many rough parts remaining after processing.
しかしながら、カシメて一体化する組合せシールDは、
前記の様に外側端部4′・5′が内方からの液体流出を
許さないダム形状をなしているから、水分がその内部に
浸入するといつまでも該組合せシール部内に残り密封力
を極端に弱めてしまう欠点がある。However, the combination seal D, which is integrated by caulking,
As mentioned above, since the outer ends 4' and 5' have a dam shape that does not allow liquid to flow out from inside, if moisture enters the inside, it will remain in the combined seal part forever and weaken the sealing force extremely. There are drawbacks to this.
一方、造形後そのまま組付けられた単純構造の組合せシ
ールD′(図示していない)にあっては、その端部にカ
エリ・曲り等の粗部箇所が多く見られ、該粗部に水分の
スムーズな排出効果を期待することはできない。また、
この端部でラビリンスシール作用をなす小隙間Bを形成
する場合、前記の様な粗部では十分なシール効果を発揮
し得ない大きな欠点となる。On the other hand, in the combination seal D' (not shown), which has a simple structure and is assembled as is after modeling, there are many rough parts such as burrs and bends at the edges, and there is moisture in the rough parts. A smooth discharge effect cannot be expected. Also,
When forming a small gap B that acts as a labyrinth seal at this end, the rough portion as described above has a major drawback in that a sufficient sealing effect cannot be achieved.
本発明はこの様な欠点を除去し、密封性及び排出性に擾
れしかも安価に形成できる組合せシールを提供するもの
である。The present invention eliminates these drawbacks and provides a combination seal that has excellent sealing and drainage properties and can be formed at low cost.
本発明は第1図に示す様に、断面が略し字形をなした第
1密封要素1と、略]字形断面を持つ第2密封要素2か
らなり、その何れか一方の内部に複数の弾性体シールリ
ップ6を配設し、内部に空洞を形成する様組付けた組合
せシールAであって;外側の外周部にラビリンス隙間B
を形成した前記第1密封要素1と第2密封要素2の端部
1′・2′内肩部を斜め状の傾斜面Cに形成したことを
特徴としている。As shown in FIG. 1, the present invention consists of a first sealing element 1 having an oval-shaped cross section, and a second sealing element 2 having an approximately ]-shaped cross section, and a plurality of elastic bodies are disposed inside one of them. A combination seal A in which a seal lip 6 is disposed and assembled to form a cavity inside; a labyrinth gap B is provided at the outer circumference.
The end portions 1' and 2' of the first sealing element 1 and the second sealing element 2 have inner shoulder portions formed into oblique inclined surfaces C.
(作用〕
本発明の組合せシールAは、シール空間に浸入しようと
する水分を微量に押え、それでも浸入した水分それも異
物を含む泥水等をスムーズに外部へ排出せしめることの
できる優れた作用をなす。(Function) The combination seal A of the present invention has an excellent effect of suppressing a trace amount of water that is about to enter the seal space, and yet allowing the water that has entered, as well as muddy water containing foreign substances, to be smoothly discharged to the outside. .
すなわち、通常組合せシールに排出機能を設ける場合密
封力の低下を承知で外部側のラビリンス隙間Bを許す限
り拡げて対応せざるを得なかったが、本発明では、第1
図の様にラビリンス隙間Bを形成する第1密封要素1と
第2密封要素2の外方外周端部内肩部1′・2′を傾斜
面Cとしたことで組合せシールAの内部にある泥水等の
水分あるいは異物を密封力を下げることなく迅速に排除
する。That is, when normally providing a discharge function to a combination seal, the labyrinth gap B on the outside side had to be widened as much as possible, knowing that the sealing force would be reduced, but in the present invention, the first
As shown in the figure, the inner shoulders 1' and 2' of the outer peripheral ends of the first sealing element 1 and the second sealing element 2, which form the labyrinth gap B, are made into inclined surfaces C, so that the muddy water inside the combination seal A is To rapidly remove moisture or foreign matter such as without reducing sealing force.
つまり、該傾斜面Cは密封要素1・2の軸方向部及び径
方向部の内側肩部に配設される構造であり何れも斜め外
方に向く面を構成しているから、回転が加わると振切効
果の大きく得られる形状となり内部の泥水などに対し高
い排出作用を発揮する。In other words, the inclined surfaces C are arranged on the inner shoulders of the axial and radial portions of the sealing elements 1 and 2, and both constitute surfaces facing diagonally outward, so rotation is applied to them. It has a shape that provides a large shake-off effect, and exhibits a high draining effect on muddy water etc. inside.
また、前記傾斜面Cはラビリンス隙間Bを挾んで互いに
向き合う状態に組合されており、そのため該ラビリンス
隙間Bを巾広く造形できるから流体の流れに対する大き
な抵抗となり高い密封作用をも働かせる。Further, the inclined surfaces C are assembled so as to face each other with the labyrinth gap B in between, so that the labyrinth gap B can be formed wide, providing a large resistance to the flow of fluid, and also exerting a high sealing effect.
本考案の傾斜面Cの形成には様々な方法を有しており、
単に圧縮して成型する以外に、第2図に示した様に構造
物一般に用いられている角部を削り落す面取り加工Oa
を施すとか、あるいは密封要素端部1′・2′を外方に
曲加工Ck+するなどしても形成でき、また造形する傾
斜角度においてもそれが90°以下の角度であるなら求
められる角度に応じて形成すれば良い。There are various methods for forming the inclined surface C of the present invention.
In addition to simply compressing and molding, as shown in Figure 2, there is a chamfering process Oa that shaves off the corners, which is commonly used in structures.
Alternatively, it can be formed by bending the ends 1' and 2' of the sealing element outward Ck+.Also, if the inclination angle to be formed is less than 90°, it can be formed at the required angle. It may be formed accordingly.
以上の説明の様に、本発明は簡単な構成によって強力な
密封力を働かせつつ゛その内部の水分を排出する優れた
効果を発揮せしめるものであり、泥水等異物を含んだ水
分が浸入する恐れのある箇所での使用を可能とした画期
的な組合せシールである。As explained above, the present invention has a simple structure that exerts a strong sealing force and exhibits an excellent effect of draining the moisture inside, thereby preventing the risk of moisture containing foreign substances such as muddy water from entering. This is a revolutionary combination sticker that can be used in certain locations.
第1図は本発明の組合せシールを表わした断面図である
。第2図は本発明の組合せシールの他の実施例を表わす
拡大断面図である。第3図は従来の組合せシールを表わ
す断面図である。
A・・・本考案の組合せシール B・・・ラビリンス隙
間 C・・・傾斜面 Ca・・・面取り加工 ab・・
・曲加工1・・・第1密封要素 2・・・第2密封要素
6・・・シールリップFIG. 1 is a sectional view showing a combination seal of the present invention. FIG. 2 is an enlarged sectional view showing another embodiment of the combination seal of the present invention. FIG. 3 is a sectional view showing a conventional combination seal. A... Combination seal of the present invention B... Labyrinth gap C... Inclined surface Ca... Chamfering ab...
・Bending processing 1...First sealing element 2...Second sealing element 6...Seal lip
Claims (3)
字形断面を持つ第2密封要素2からなり、その何れか一
方の内部に複数の弾性体シールリップ3を配設した組合
せシールAであって;外側外周部にラビリンス隙間Bを
形成した前記第1密封要素1と第2密封要素2の端部1
′・2′内肩部を傾斜面Cとしたことを特徴とする組合
せシール。(1) A first sealing element 1 having a substantially L-shaped cross section;
A combination seal A comprising a second sealing element 2 having a letter-shaped cross section, and a plurality of elastic seal lips 3 disposed inside one of the second sealing elements; End 1 of sealing element 1 and second sealing element 2
A combination seal characterized in that the inner shoulder portions of ' and 2' are sloped surfaces C.
を特徴とした特許請求の範囲第1項記載の組合せシール
。(2) The combination seal according to claim 1, wherein the inclined surface C is formed by chamfering Ca.
2′を外方に曲加工Cbして形成されたことを特徴とし
た特許請求の範囲第1項記載の組合せシール。(3) The inclined surface C is formed at the end 1' of the sealing element 1.2.
The combination seal according to claim 1, characterized in that the seal 2' is formed by bending Cb outward.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP61125247A JPS62283261A (en) | 1986-05-29 | 1986-05-29 | Combined seal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP61125247A JPS62283261A (en) | 1986-05-29 | 1986-05-29 | Combined seal |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS62283261A true JPS62283261A (en) | 1987-12-09 |
Family
ID=14905408
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP61125247A Pending JPS62283261A (en) | 1986-05-29 | 1986-05-29 | Combined seal |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS62283261A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007032640A (en) * | 2005-07-25 | 2007-02-08 | Nsk Ltd | Bearing unit for wheel |
JP2008128378A (en) * | 2006-11-21 | 2008-06-05 | Jtekt Corp | Sealing device |
EP3431834A1 (en) | 2017-07-18 | 2019-01-23 | Nakanishi Metal Works Co., Ltd. | Rotary seal |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6060373A (en) * | 1983-08-25 | 1985-04-06 | ガーロツク インコーポレーテツド | Unit type seal |
-
1986
- 1986-05-29 JP JP61125247A patent/JPS62283261A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6060373A (en) * | 1983-08-25 | 1985-04-06 | ガーロツク インコーポレーテツド | Unit type seal |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007032640A (en) * | 2005-07-25 | 2007-02-08 | Nsk Ltd | Bearing unit for wheel |
JP2008128378A (en) * | 2006-11-21 | 2008-06-05 | Jtekt Corp | Sealing device |
EP3431834A1 (en) | 2017-07-18 | 2019-01-23 | Nakanishi Metal Works Co., Ltd. | Rotary seal |
US10634193B2 (en) | 2017-07-18 | 2020-04-28 | Nakanishi Metal Works Co., Ltd. | Rotary seal |
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