JPH0740126Y2 - Oil sealing device - Google Patents
Oil sealing deviceInfo
- Publication number
- JPH0740126Y2 JPH0740126Y2 JP1990029875U JP2987590U JPH0740126Y2 JP H0740126 Y2 JPH0740126 Y2 JP H0740126Y2 JP 1990029875 U JP1990029875 U JP 1990029875U JP 2987590 U JP2987590 U JP 2987590U JP H0740126 Y2 JPH0740126 Y2 JP H0740126Y2
- Authority
- JP
- Japan
- Prior art keywords
- retainer
- sealing device
- oil sealing
- crankshaft
- sealing
- 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
Landscapes
- Sealing With Elastic Sealing Lips (AREA)
Description
【考案の詳細な説明】 ［産業上の利用分野］ 本考案は自動車等のエンジンにおけるシャフトの密封を
目的とする密封構造に関し、さらに具体的にはクランク
シャフト等の特殊密封用途に適合するオイルシール付リ
テーナの形状改良に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a sealing structure for sealing a shaft in an engine of an automobile or the like, and more specifically, an oil seal suitable for a special sealing application such as a crankshaft. The present invention relates to the improvement of the shape of the attached retainer.
［従来の構造］ 従来、自動車等に搭載されたエンジンの、シリンダブロ
ックとクランクシャフトとを密封するカバー形状をした
リテーナは、アルミニウムダイキャスト等で形成されそ
の各部分に高精度な研磨加工を施しておりこれに補強環
と弾性体からなるオイルシールを後に嵌装取付して、こ
れを接合部の形状に造形したパッキング部材を介してシ
リンダブロックに取り付け密封作用をなさしめていた。[Conventional structure] Conventionally, the retainer of the engine mounted in an automobile or the like, which has a cover shape for sealing the cylinder block and the crankshaft, is formed by aluminum die casting or the like, and each part thereof is subjected to high precision polishing. Then, an oil seal composed of a reinforcing ring and an elastic body is later fitted and attached to the oil seal, and the oil seal is attached to the cylinder block through a packing member shaped in the shape of the joint to achieve a sealing action.
［考案が解決しようとする課題］ しかしながら、このような複数の部品点数を持つ複合タ
イプのリテーナは、各々の精度を高めても複数の誤差が
加算されるので全体的には高精度を確保するに至らず、
また、オイルシールの脱落．偏心．傾き等の解決されな
ければならない取付上の問題が残っていた。[Problems to be solved by the invention] However, in such a composite type retainer having a plurality of parts, a plurality of errors are added even if the respective precisions are increased, so that a high precision is secured as a whole. Without reaching
Also, the oil seal came off. Eccentricity. There were still mounting issues that had to be resolved, such as tilting.
また、前記のように該リテーナは一体的な構成物でない
から様々な取付部とか嵌合部から油が漏洩する危険性を
残しており、特に熱膨張率の異なる異種材料の部材を嵌
合しているので熱応力のため容易に変形を起こして隙間
を発生させるなど高い密封性能を確保することができな
い致命的な欠点を有している。Further, as described above, since the retainer is not an integral component, there is a risk that oil will leak from various mounting parts or fitting parts, and especially members of different materials having different thermal expansion coefficients are fitted. Therefore, there is a fatal defect that a high sealing performance cannot be ensured, such as deformation due to thermal stress and generation of a gap.
本考案はこのような多くの不具合を解消し、部品点数を
省略して手間のかかる嵌合と組立作業を廃止せしめトー
タルコストの低減と密封性能の向上をもたらした密封構
造を提供することを目的としている。The present invention aims to provide a sealing structure that solves many of these problems, eliminates the number of parts, eliminates complicated fitting and assembling work, and reduces total cost and improves sealing performance. I am trying.
以下図面を参照しつつ詳述する。The details will be described below with reference to the drawings.
［課題を解決するための手段］ 本考案は、第１図に示すようにエンジンのシリンダブロ
ック等に接しクランクシャフト（１）に貫通されたカバ
ー形状を持つリテーナ（２）のオイル密封装置であっ
て、前記リテーナ（２）を耐熱性プラスチックで形成
し、前記取付部材（３）とリテーナ（２）との接合面と
クランクシャフト（１）の摺動面に位置する薄板状のポ
リテトラフルオロエチレンからなる弾性部材（５）が一
体的にリテーナ（２）へ設けられたことを特徴としてい
る。[Means for Solving the Problems] The present invention is an oil sealing device for a retainer (2) having a cover shape which is in contact with a cylinder block of an engine and penetrates through a crankshaft (1) as shown in FIG. The retainer (2) is made of heat-resistant plastic, and is a thin plate-shaped polytetrafluoroethylene located on the joint surface between the mounting member (3) and the retainer (2) and the sliding surface of the crankshaft (1). The elastic member (5) consisting of is integrally provided on the retainer (2).
また、前記リテーナ（２）にダストリップ（６）を突設
したことを特徴としている。The retainer (2) is characterized in that a dust lip (6) is provided in a protruding manner.
［作用］ 本考案は上記のような構造をもって下記に示す優れた作
用をなす。[Operation] The present invention has the above-described structure and performs the following excellent operation.
すなわち、本考案の密封装置は、第１図に示すようにリ
テーナ（１）を造形性に優れる耐熱性プラスチックで形
成し、これに耐熱性．耐油性．摩擦性等に優れたポリテ
トラフルオロエチレンからなる弾性部材（５）を一体化
したものであり、このとき該弾性部材（５）はクランク
シャフト（１）の摺動面に位置するシールリップ（４）
を持って取付部材（３）との接触面まで継ぎ部分のない
一体構造物に造形されているから、該リテーナ（２）が
装着締付されると摺動密封機能とスタティックシール機
能を果たしその取付け面とクランクシャフト（１）との
両部材に強い密封作用を働かせしめる。That is, in the sealing device of the present invention, as shown in FIG. 1, the retainer (1) is made of heat-resistant plastic having excellent moldability, and the retainer (1) is heat-resistant. Oil resistance. An elastic member (5) made of polytetrafluoroethylene excellent in frictional property is integrated, and at this time, the elastic member (5) is located on the sliding surface of the crankshaft (1). )
Since the retainer (2) is shaped into an integral structure having no joint up to the contact surface with the mounting member (3), the retainer (2) performs a sliding sealing function and a static sealing function. A strong sealing action is exerted on both the mounting surface and the crankshaft (1).
［実施例］ 本考案を実施するに、耐熱性プラスチックでのリテーナ
（２）の形成は、その成型の容易性から複雑な凹凸形状
も造形可能であり、この成型の際その外部側にクランク
シャフト（１）と近接するダストリップ（６）を突出配
設せしめると、該ダストリップ（６）のラビリンスシー
ル作用で内部にあるシールリップ（４）にまで異物等を
浸入させないものとなる。[Embodiment] In carrying out the present invention, the retainer (2) made of heat resistant plastic can be formed into a complicated uneven shape because of its ease of molding, and at the time of this molding, a crankshaft is formed on the outer side thereof. If the dust lip (6) adjacent to (1) is provided so as to project, foreign matter and the like will not penetrate into the seal lip (4) inside due to the labyrinth sealing action of the dust lip (6).
また、弾性部材（５）をリテーナ（２）に形成する時、
該弾性部材（５）を予め一定の厚みを持つ薄板カバー形
状に造形しておき、これをリテーナ（２）と一体化せし
める構造とすれば、飛躍的に造形性を高めるばかりでな
くトータル的な成型コストの低減が図れる。When the elastic member (5) is formed on the retainer (2),
If the elastic member (5) is preliminarily formed into a thin plate cover shape having a certain thickness and is integrated with the retainer (2), not only the molding property is dramatically improved but also the total shape is improved. The molding cost can be reduced.
［考案の効果］ 以上の説明のように本考案は、取付部材（３）への取付
け面からシールリップ（４）にまで継ぎ目なく一体的に
延びる弾性部材（５）をリテーナ（２）に一体化してい
るので、取付締め付けられると圧縮密封効果と摺動密封
効果を発揮し大きなシール性能の向上が図れる。また、
一体化ゆえ軽量化が果たせると共に取付部材（３）への
装着性が向上しトータルコストの低減が図れるものとな
った。さらに、弾性部材（５）とリテーナ（２）とは比
較的熱膨張率が近い特性を持っているので熱応力の影響
を受け難く使用中の変形を防ぎ強い固着性を示す。[Effects of the Invention] As described above, the present invention integrates the elastic member (5) integrally extending from the mounting surface of the mounting member (3) to the seal lip (4) seamlessly with the retainer (2). Since it has become more and more effective, when it is mounted and tightened, it exerts a compression sealing effect and a sliding sealing effect, and a large improvement in sealing performance can be achieved. Also,
Due to the integration, the weight can be reduced, and the mountability to the mounting member (3) can be improved to reduce the total cost. Furthermore, since the elastic member (5) and the retainer (2) have characteristics that the coefficients of thermal expansion are relatively close to each other, they are not easily affected by thermal stress, prevent deformation during use, and exhibit strong adhesion.
第１図は本考案の装着された一実施例を表した断面図で
ある。 １…クランクシャフト、２…リテーナ、３…取付部材、
４…シールリップ、５…弾性部材、６…ダストリップ。FIG. 1 is a cross-sectional view showing an installed embodiment of the present invention. 1 ... Crank shaft, 2 ... Retainer, 3 ... Mounting member,
4 ... seal lip, 5 ... elastic member, 6 ... dust lip.
Claims (2)
させこれを密封するカバー形状のリテーナ（２）のオイ
ル密封装置であって； 前記リテーナ（２）を耐熱性プラスチックで形成し、 前記取付部材（３）とリテーナ（２）との接合面とクラ
ンクシャフト（１）の摺動面に位置する薄板状のポリテ
トラフルオロエチレンからなる弾性部材（５）が一体的
にリテーナ（２）へ設けられたことを特徴としたオイル
密封装置。1. An oil sealing device of a cover-shaped retainer (2) which penetrates a crankshaft (1) of an engine and seals the crankshaft (1); the retainer (2) is formed of heat-resistant plastic, and the mounting member. An elastic member (5) made of thin plate-shaped polytetrafluoroethylene located on the joint surface between (3) and the retainer (2) and the sliding surface of the crankshaft (1) is integrally provided on the retainer (2). An oil sealing device characterized by that.
を突設したことを特徴とする請求項（１）記載のオイル
密封装置。2. A dust lip (6) on the retainer (2).
The oil sealing device according to claim 1, wherein the oil sealing device is provided with a protrusion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990029875U JPH0740126Y2 (en) | 1990-03-23 | 1990-03-23 | Oil sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990029875U JPH0740126Y2 (en) | 1990-03-23 | 1990-03-23 | Oil sealing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03119668U JPH03119668U (en) | 1991-12-10 |
| JPH0740126Y2 true JPH0740126Y2 (en) | 1995-09-13 |
Family
ID=31532619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990029875U Expired - Lifetime JPH0740126Y2 (en) | 1990-03-23 | 1990-03-23 | Oil sealing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0740126Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7356806B2 (en) * | 2019-02-21 | 2023-10-05 | ナブテスコ株式会社 | Shaft device, gear mechanism and oil seal |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3309538C2 (en) * | 1983-03-17 | 1986-05-28 | Fa. Carl Freudenberg, 6940 Weinheim | poetry |
| DE3638515C1 (en) * | 1986-11-11 | 1988-05-26 | Freudenberg Carl Fa | Cassette seal |
-
1990
- 1990-03-23 JP JP1990029875U patent/JPH0740126Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03119668U (en) | 1991-12-10 |
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