JPH0647180Y2 - Reciprocating oil seal - Google Patents
Reciprocating oil sealInfo
- Publication number
- JPH0647180Y2 JPH0647180Y2 JP1989060835U JP6083589U JPH0647180Y2 JP H0647180 Y2 JPH0647180 Y2 JP H0647180Y2 JP 1989060835 U JP1989060835 U JP 1989060835U JP 6083589 U JP6083589 U JP 6083589U JP H0647180 Y2 JPH0647180 Y2 JP H0647180Y2
- Authority
- JP
- Japan
- Prior art keywords
- seal lip
- worn
- seal
- tip angle
- oil
- 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」 この考案は、往復動用オイルシール、特にそのシールリ
ップの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 an improvement of a reciprocating oil seal, particularly a seal lip thereof.
「従来の技術、考案が解決せんとする問題点」 従来の往復動用オイルシールは、シールリップの先端角
を構成するオイル側の端面が一定角度（油面角）の直線
状の傾斜面に形成されていた。"Problems to be solved by conventional technologies and devices" In the conventional reciprocating oil seal, the end face on the oil side that constitutes the tip angle of the seal lip is formed into a linear inclined surface with a constant angle (oil surface angle). It had been.
そのため、従来のオイルシールにおいては、リップ先端
が第２図に示すように摩耗やヘタリを生ずると、その摩
耗やヘタリの度合によって先端角が変化し（角度が拡が
る）、シール対象である往復動軸に対する接触応力分布
が変化してシール性が低下する欠点があった。Therefore, in the conventional oil seal, when the tip of the lip is worn or settled as shown in Fig. 2, the tip angle changes (the angle widens) depending on the degree of wear and settling, and the reciprocating motion to be sealed There is a drawback that the distribution of contact stress with respect to the shaft changes and the sealing performance deteriorates.
「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、シールリ
ップの先端角を構成するオイル側の端面を、シールリッ
プの摩耗やヘタリ時においてその先端角が常にほぼ一定
となるように所要の曲面に形成することにより、摩耗や
ヘタリにに拘らずリップの先端角をほぼ一定に維持し、
常時一定の接触応力分布を確保して安定したシール性を
得るようにした往復動用オイルシールを提案するもので
ある。[Means for Solving the Problems] In order to solve the above-mentioned conventional problems, the present invention is designed so that the end face on the oil side, which constitutes the tip angle of the seal lip, always has the tip angle when the seal lip is worn or worn. By forming the required curved surface so that it becomes almost constant, the tip angle of the lip is kept almost constant regardless of wear and fatigue,
The present invention proposes a reciprocating oil seal that ensures a constant contact stress distribution and a stable sealing performance.
「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、
オイルシールのシールリップ１の先端角を構成するオイ
ル側の端面２は、シールリップの摩耗やヘタリ時におい
てその先端角α1，α2，α3が常にほぼ一定となるよう
に所要の曲面に形成されている。"Embodiment" An embodiment of the present invention shown in the drawings will be described below.
The end face 2 on the oil side which constitutes the tip angle of the seal lip 1 of the oil seal has a required curved surface so that the tip angles α 1 , α 2 and α 3 are always substantially constant when the seal lip is worn or worn. Has been formed.
この端面２の曲面形状はその曲率Ｒを、例えば、第１図
に示す長さｌを基準としてｌ×（１〜0.5）に設定し、
シールリップ１の加硫成形後における研削又は切削加工
によって所要の曲面に形成する。The curved surface shape of the end face 2 has its curvature R set to, for example, l × (1 to 0.5) with reference to the length l shown in FIG.
The seal lip 1 is formed into a desired curved surface by grinding or cutting after vulcanization molding.
「考案の作用」 このようにオイル側の端面２を所要の曲面に形成するこ
とにより、リップの摩耗やヘタリにも拘らず先端角がほ
ぼ一定に維持されるため、常時一定の接触応力分布が確
保され、安定したシール性を得られる。[Operation of device] By forming the end surface 2 on the oil side into a desired curved surface in this way, the tip angle is maintained substantially constant regardless of lip wear and fatigue, so that a constant contact stress distribution is obtained. Secured and stable sealing property can be obtained.
「考案の効果」 以上の通りこの考案によれば、シールリップの先端角を
構成するオイル側の端面を、シールリップの摩耗やヘタ
リ時においてその先端角が常にほぼ一定となるように所
要の曲面に形成されているので、シールリップの先端の
摩耗やヘタリにも拘らず先端角をほぼ一定に維持し、常
時一定の接触応力分布を確保して安定したシール性を得
ることができる。[Advantage of Device] As described above, according to the present invention, the end face on the oil side, which constitutes the tip angle of the seal lip, has a required curved surface so that the tip angle is always substantially constant when the seal lip is worn or worn. Therefore, the tip angle of the seal lip can be maintained substantially constant regardless of wear and fatigue of the tip of the seal lip, and a constant contact stress distribution can be secured at all times to obtain stable sealing performance.
第１図はこの考案のシールリップの側面形態及び摩耗の
関係を示す部分外形線側面図、第２図は従来のシールリ
ップの側面形態及び摩耗の関係を示す部分外形線側面図
である。 １……シールリップ、２……オイル側端面。FIG. 1 is a side view of a partial outer shape line showing the relationship between the side shape and wear of the seal lip of the present invention, and FIG. 2 is a side view of a partial outer shape line showing the relationship between the side surface shape and wear of a conventional seal lip. 1 ... Seal lip, 2 ... Oil side end face.
Claims (1)
の端面を、シールリップの摩耗やヘタリ時においてその
先端角が常にほぼ一定となるように所要の曲面に形成し
てなることを特徴とする往復動用オイルシール。1. An end surface on the oil side which constitutes the tip angle of the seal lip is formed into a required curved surface so that the tip angle is always substantially constant when the seal lip is worn or worn. Reciprocating oil seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989060835U JPH0647180Y2 (en) | 1989-05-25 | 1989-05-25 | Reciprocating oil seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989060835U JPH0647180Y2 (en) | 1989-05-25 | 1989-05-25 | Reciprocating oil seal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03369U JPH03369U (en) | 1991-01-07 |
| JPH0647180Y2 true JPH0647180Y2 (en) | 1994-11-30 |
Family
ID=31588549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989060835U Expired - Lifetime JPH0647180Y2 (en) | 1989-05-25 | 1989-05-25 | Reciprocating oil seal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0647180Y2 (en) |
-
1989
- 1989-05-25 JP JP1989060835U patent/JPH0647180Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03369U (en) | 1991-01-07 |
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