JPH0454375Y2 - - Google Patents
Info
- Publication number
- JPH0454375Y2 JPH0454375Y2 JP1984167896U JP16789684U JPH0454375Y2 JP H0454375 Y2 JPH0454375 Y2 JP H0454375Y2 JP 1984167896 U JP1984167896 U JP 1984167896U JP 16789684 U JP16789684 U JP 16789684U JP H0454375 Y2 JPH0454375 Y2 JP H0454375Y2
- Authority
- JP
- Japan
- Prior art keywords
- hole
- rubber
- oil seal
- seal
- inner peripheral
- 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
Links
- 230000002093 peripheral effect Effects 0.000 claims description 12
- 230000003014 reinforcing effect Effects 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 3
- 230000008602 contraction Effects 0.000 claims 1
- 239000010410 layer Substances 0.000 description 8
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000010073 coating (rubber) Methods 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3268—Mounting of sealing rings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing With Elastic Sealing Lips (AREA)
Description
【考案の詳細な説明】
「考案の利用分野」
この考案はオイルシール、特にハウジングに取
付けた後これを取外すための構造に関するもので
ある。[Detailed Description of the Invention] "Field of Application of the Invention" This invention relates to an oil seal, and particularly to a structure for removing it after being attached to a housing.
「従来の技術、解決せんとする問題点」
従来、オイルシールはその組付けを簡単に行え
るように取付治具等が開発されているが、交換等
に際してその取外しのための手段については適切
な方策がなく、一般にドライバー等により一部を
引掛けて取外しており、その取外しに無理がある
ため軸やハウジングを傷付けてしまう場合が少な
くない。``Prior art, problems to be solved'' In the past, installation jigs and the like have been developed to make it easy to assemble oil seals. There is no practical way to do this, and generally a part of the shaft is removed using a screwdriver, etc., and this often results in damage to the shaft or housing because it is difficult to remove.
そのため従来、オイルシールの金属補強環の内
周フランジ部に底面側に***して開口する切り起
こし突起部を設け、内周フランジ部の上面側にシ
ールリツプのゴムと一体のゴム層を被覆し、この
ゴムを突起部内に充填し、この突起部の開口から
ゴム層にドライバー等の取り外し治具を挿し込ん
で取り外すことを可能としたオイルシールも知ら
れている（特公昭37−9009号公報）。 For this reason, conventionally, the inner flange of the metal reinforcing ring of the oil seal is provided with a cut-and-raised protrusion that protrudes and opens toward the bottom, and the upper surface of the inner flange is coated with a rubber layer that is integral with the rubber of the seal lip. An oil seal is also known in which this rubber is filled into a protrusion and can be removed by inserting a removal jig such as a screwdriver into the rubber layer through the opening of the protrusion (Japanese Patent Publication No. 37-9009). .
しかしながら、上記従来のオイルシールにおい
ては底面に突起部が突出しているため、オイルシ
ールをハウジングに装着する治具にもこの突起部
を押し潰さないように、これに対応した凹部を設
けるなど特別な形態のものが必要となり、また自
動車整備業者など装着治具を備えないところでオ
イルシールを交換装着する場合、ハンマーの叩き
込みによつて装着しているが、この叩き込みの際
に突起部を叩いて変形させるおそれがある。 However, since the above-mentioned conventional oil seal has a protrusion protruding from the bottom, the jig for mounting the oil seal on the housing must also have a corresponding recess so as not to crush the protrusion. In addition, when replacing the oil seal in a place such as an automobile maintenance shop that does not have a mounting jig, the oil seal is installed by hitting it with a hammer, but when hitting the protrusion, the protrusion can be hit and deformed. There is a risk of causing
また、オイルシールの成形時において、補強環
を金型に装填するためには、この金型に突起部の
開口からゴムが流出しないように、突起部を密に
嵌合させる凹部の加工が必要で、この突起部及び
凹部の加工寸法精度を厳格に保持させねばなら
ず、しかも補強環を金型内に装填する際に突起部
を凹部に嵌合する位置決めが必要である等、加工
及び工程上煩雑で、寸法精度の確保も困難であ
り、コスト高を免れない等の問題があつた。 Additionally, when molding an oil seal, in order to load the reinforcing ring into the mold, it is necessary to process a recess into the mold to tightly fit the protrusion so that the rubber does not flow out from the opening of the protrusion. Therefore, the machining dimensional accuracy of these protrusions and recesses must be strictly maintained, and when loading the reinforcing ring into the mold, it is necessary to position the protrusions to fit into the recesses, etc. It is complicated, it is difficult to ensure dimensional accuracy, and there are problems such as high costs.
更に、突起部の開口周縁は先鋭エツジに形成さ
れるため、オイルシールの取り扱い時に手などを
傷付けたり、オイルシール同士の重ね合せ時に相
手を傷付けるおそれがあつた。 Furthermore, since the opening periphery of the protrusion is formed with a sharp edge, there is a risk of injuring one's hands when handling the oil seal or injuring another party when overlapping the oil seals.
「問題点を解決するための手段」
この考案は前記従来の課題を解決するために、
断面Ｌ型の金属補強環の内周フランジ部に周辺が
平坦な透孔を設け、この透孔に前記内周フランジ
部の底面に焼付けた被覆部のゴムを充填したオイ
ルシールを提案するものである。"Means for solving the problem" This invention aims to solve the above-mentioned conventional problem.
The present invention proposes an oil seal in which a through hole with a flat periphery is provided in the inner peripheral flange of a metal reinforcing ring having an L-shaped cross section, and this through hole is filled with rubber of a covering part baked onto the bottom surface of the inner peripheral flange. be.
「作用」
内周フランジ部の底面に焼付けた被覆部のゴム
層は透孔内に充填されて、その周囲よりも厚さが
大であるため、焼付け後に生ずるゴムの収縮が大
きくなり、この結果透孔に対応した位置における
被覆部の表面に凹部が形成され、外観上この凹部
により透孔の位置が確認できる。``Effect'' The rubber layer of the covering part baked on the bottom surface of the inner peripheral flange fills the through hole and is thicker than the surrounding area, so the shrinkage of the rubber that occurs after baking increases, resulting in A recess is formed on the surface of the covering portion at a position corresponding to the through hole, and the position of the through hole can be visually confirmed by this recess.
従つて、ハウジングに取付けたオイルシールを
取外す際に、ドライバー等の先鋭状治具を被覆部
に形成された凹部から確実に透孔内のゴムに突き
通して透孔の周縁部に引掛けながらオイルシール
をハウジングから第２図の矢印方向に抜取ること
ができる。 Therefore, when removing the oil seal attached to the housing, use a sharp jig such as a screwdriver to firmly penetrate the rubber in the through hole through the recess formed in the covering part, and hook it onto the periphery of the through hole. The oil seal can be removed from the housing in the direction of the arrow in FIG.
この場合、治具の先端がオイルシールのシール
リツプ部と取付けシール部とに囲まれた部分に突
出するため、軸やハウジングに触れることはな
く、安全かつ確実にオイルシールを取外すことが
できる。 In this case, since the tip of the jig protrudes into the area surrounded by the seal lip portion and the mounting seal portion of the oil seal, the oil seal can be removed safely and reliably without touching the shaft or housing.
「実施例」
以下この考案を図面に示す実施例について説明
すると、オイルシール１はその補強環２の内周フ
ランジ部２ａの内周端にゴム製シールリツプ部３
が設けられ、平坦部の外周から直角に折曲された
外壁部２ｂにゴム製の嵌合シール部４が設けられ
ている。``Example'' Below, an example of this invention shown in the drawings will be described. The oil seal 1 has a rubber seal lip portion 3 at the inner peripheral end of the inner peripheral flange portion 2a of the reinforcing ring 2.
A fitting seal portion 4 made of rubber is provided on the outer wall portion 2b bent at right angles from the outer periphery of the flat portion.
補強環２の内周フランジ部２ａには、一箇所又
は複数箇所に周辺が平坦な透孔５が設けられ、こ
の透孔５内には内周フランジ部２ａの底面にシー
ルリツプ部３及び取付けシール部４と一体に焼付
けた被覆部６のゴムが充填され、これによつて透
孔５は内周フランジ部２ａの底面側において被覆
部６によつて隠蔽されている。 The inner peripheral flange portion 2a of the reinforcing ring 2 is provided with a through hole 5 having a flat periphery at one or more locations, and a seal lip portion 3 and a mounting seal are provided in the bottom surface of the inner peripheral flange portion 2a in the through hole 5. The rubber of the covering part 6 baked integrally with the part 4 is filled, so that the through hole 5 is hidden by the covering part 6 on the bottom side of the inner peripheral flange part 2a.
そして、透孔５に対応する部分における被覆部
６のゴム層は、透孔５内に充填され分だけ透孔５
の周囲よりも厚さが大であるため、焼付け後に生
ずるゴムの収縮が大きくなり、この結果透孔５に
対応した位置における被覆部６の表面に凹部７が
形成され、外観上この凹部７により透孔５の位置
が確認できる。 The rubber layer of the covering portion 6 in the portion corresponding to the through hole 5 is filled in the through hole 5 by the amount of the rubber layer filled in the through hole 5.
Since the thickness is larger than the circumference of the rubber, the shrinkage of the rubber that occurs after baking becomes large, and as a result, a recess 7 is formed on the surface of the covering part 6 at a position corresponding to the through hole 5. The position of the through hole 5 can be confirmed.
従つて、ハウジングＨに取付けたオイルシール
１を取外す場合、ドライバー等の先鋭状治具Ｇを
被覆部６の凹部７から透孔５内のゴムに容易に突
通して、透孔５の周縁部に引掛けながらオイルシ
ール１を第２図の矢印方向に抜取ることができ
る。 Therefore, when removing the oil seal 1 attached to the housing H, a sharp tool G such as a screwdriver is easily penetrated through the rubber in the through hole 5 from the recess 7 of the covering portion 6, and the peripheral edge of the through hole 5 is removed. The oil seal 1 can be pulled out in the direction of the arrow in FIG. 2 while being hooked on the handle.
この場合、治具Ｇの先端がオイルシール１のシ
ールリツプ部３と取付けシール部４とに囲まれた
部分に突出するため、軸ＳやハウジングＨに触れ
ることはなく、安全かつ確実にオイルシール１を
取外すことができる。 In this case, since the tip of the jig G protrudes into the area surrounded by the seal lip part 3 and the mounting seal part 4 of the oil seal 1, it does not touch the shaft S or the housing H and can safely and reliably attach the oil seal 1. can be removed.
「考案の効果」
以上の通りこの考案によれば、透孔は内周フラ
ンジ部の底面に焼付けた被覆部のゴム層によつて
隠蔽されているが、被覆部のゴム層は透孔内に充
填されてその周囲よりも厚さが大であるため、焼
付け後に生ずるゴムの収縮が大きくなり、この結
果透孔に対応した位置における被覆部の表面に凹
部が形成され、外観上この凹部により透孔の位置
を確認することができる。``Effect of the invention'' As described above, according to this invention, the through hole is hidden by the rubber layer of the covering part baked on the bottom of the inner peripheral flange part, but the rubber layer of the covering part is hidden inside the through hole. Since the thickness of the filled rubber is larger than that of the surrounding area, the shrinkage of the rubber that occurs after baking becomes large, and as a result, a recess is formed on the surface of the coating at the position corresponding to the through hole, and the recess appears to be transparent. The position of the hole can be confirmed.
従つて、ハウジングに取付けたオイルシールを
取外す際に、この被覆部に形成された凹部からド
ライバー等の先鋭状治具を確実に透孔内のゴムに
突通して、透孔の周縁部に引掛けながらオイルシ
ールを軸やハウジングを傷付けることなくハウジ
ングから安全かつ容易に抜取ることができる。 Therefore, when removing the oil seal attached to the housing, it is necessary to ensure that a sharp tool such as a screwdriver passes through the rubber in the through hole through the concave part formed in this covering part and pull it to the periphery of the through hole. The oil seal can be safely and easily removed from the housing without damaging the shaft or housing.
透孔はその周辺が平坦で、内周フランジ部の底
面に焼付けた被覆部のゴム層によつて隠蔽されて
いるので、オイルシールの装着治具も特別な形態
である必要はなく、従来一般に使用されている治
具を使用して装着することができ、また自動車整
備業者など装着治具を備えないところでオイルシ
ールを交換装着する場合、ハンマーの叩き込みに
よる装着が可能である。 The through hole has a flat periphery and is hidden by the rubber layer of the coating baked onto the bottom of the inner flange, so there is no need for the oil seal installation jig to be of any special form. It can be installed using a commonly used jig, and if the oil seal is being replaced and installed in a place such as an automobile maintenance shop that does not have a mounting jig, it can be installed by hitting it with a hammer.
透孔はその周辺が平坦で従来のように取り外し
治具の挿し込み用の突起部がないので、オイルシ
ール成形時において、補強環の位置決めが容易
で、被覆層のゴムの流れ出しの心配もなく、しか
もこの突起部とこれに対応して金型に必要な凹部
の加工及びその寸法精度の厳密な確保などを要せ
ず、補強環及び金型の加工も極めて簡単で成形作
業も容易であると共に、取り扱い時に手などを傷
付けたり、オイルシール同士の重ね合せ時に相手
を傷付ける心配がない。 The through hole has a flat periphery and there is no protrusion for inserting a removal jig like in the past, so it is easy to position the reinforcing ring when forming an oil seal, and there is no need to worry about the rubber coating layer flowing out. Moreover, there is no need to process the protrusions and the corresponding recesses in the mold, or to strictly ensure their dimensional accuracy, and the reinforcing ring and the mold are extremely easy to work with, making the molding work easy. In addition, there is no need to worry about injuring hands or other objects when handling the oil seals, or injuring others when overlapping the oil seals.
第１図はこの考案の実施例を示す部分縦断面
図、第２図はこの考案のオイルシールの取外し状
態を示す部分縦断面図である。
１……オイルシール、２……補強環、２ａ……
平坦部、２ｂ……外壁部、３……シールリツプ
部、４……取付けシール部、５……透孔、６……
被覆部、７……凹部、Ｈ……ハウジング、Ｓ……
軸、Ｇ……治具。
FIG. 1 is a partial vertical cross-sectional view showing an embodiment of this invention, and FIG. 2 is a partial vertical cross-sectional view showing the oil seal of this invention in a removed state. 1...Oil seal, 2...Reinforcement ring, 2a...
Flat part, 2b...Outer wall part, 3...Seal lip part, 4...Mounting seal part, 5...Through hole, 6...
Covering portion, 7... recess, H... housing, S...
Axis, G... jig.
Claims (1)
が平坦な透孔を設け、この透孔に前記内周フラン
ジ部の底面に焼き付けた被覆部のゴムを充填し、
前記透孔に対応した位置における被覆部の表面に
前記ゴムの収縮による凹部が形成されてなること
を特徴とするオイルシール。 A through hole with a flat periphery is provided in the inner peripheral flange portion of the metal reinforcing ring having an L-shaped cross section, and this through hole is filled with rubber of a covering portion baked on the bottom surface of the inner peripheral flange portion,
An oil seal characterized in that a concave portion is formed on the surface of the covering portion at a position corresponding to the through hole due to contraction of the rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984167896U JPH0454375Y2 (en) | 1984-11-05 | 1984-11-05 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984167896U JPH0454375Y2 (en) | 1984-11-05 | 1984-11-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6182176U JPS6182176U (en) | 1986-05-31 |
| JPH0454375Y2 true JPH0454375Y2 (en) | 1992-12-21 |
Family
ID=30725681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1984167896U Expired JPH0454375Y2 (en) | 1984-11-05 | 1984-11-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0454375Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH073090Y2 (en) * | 1988-04-07 | 1995-01-30 | いすゞ自動車株式会社 | Oil seal |
| JP2016151319A (en) * | 2015-02-18 | 2016-08-22 | Nok株式会社 | Sealing device |
-
1984
- 1984-11-05 JP JP1984167896U patent/JPH0454375Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6182176U (en) | 1986-05-31 |
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