JPS6267372A - Oil seal and its manufacture - Google Patents
Oil seal and its manufactureInfo
- Publication number
- JPS6267372A JPS6267372A JP60205110A JP20511085A JPS6267372A JP S6267372 A JPS6267372 A JP S6267372A JP 60205110 A JP60205110 A JP 60205110A JP 20511085 A JP20511085 A JP 20511085A JP S6267372 A JPS6267372 A JP S6267372A
- Authority
- JP
- Japan
- Prior art keywords
- seal
- lip
- oil seal
- thread
- threaded
- 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.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 238000005520 cutting process Methods 0.000 claims description 36
- 238000007789 sealing Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 5
- 239000012530 fluid Substances 0.000 abstract description 19
- 239000011347 resin Substances 0.000 description 27
- 229920005989 resin Polymers 0.000 description 27
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000003292 glue Substances 0.000 description 2
- YAFQFNOUYXZVPZ-UHFFFAOYSA-N liproxstatin-1 Chemical compound ClC1=CC=CC(CNC=2C3(CCNCC3)NC3=CC=CC=C3N=2)=C1 YAFQFNOUYXZVPZ-UHFFFAOYSA-N 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 241000595119 Brachirus annularis Species 0.000 description 1
- 101100517284 Caenorhabditis elegans nsun-1 gene Proteins 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 241000555745 Sciuridae Species 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Landscapes
- Sealing With Elastic Sealing Lips (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は同心に組合わされた二回転部材間を密封するの
に用いられる回転オイルソール、特にシール面にねじ虜
を設けたシールリップを有するオイルシール及びその製
造方法に関する。Detailed Description of the Invention (Industrial Application Field) The present invention has a rotary oil sole used for sealing between two rotating members concentrically assembled, and in particular has a seal lip with a screw cap on the sealing surface. This invention relates to an oil seal and its manufacturing method.
（従来の技術）
従来この種のオイルシールとしては、たとえば第８図に
示すようなものがある（米国特許第３．９８５．４８７
号明細書）。すなわち、１００は板状の四フッ化エチレ
ン樹脂（以下ＰＴＦＥという）によって成形された樹脂
製のシールリップであり、基端部１０１がハウジング１
０２内周に嵌合される支持部材１０３に耕付けられてい
る。ン、−ルリノプ＋００は回転軸１０４に向って傾斜
して延びており、その先端部が回転軸１０４に摺接して
ノール部１０５が形成されている。このノール′ノ。(Prior Art) Conventionally, as this type of oil seal, there is one as shown in FIG. 8 (U.S. Pat. No. 3,985,487).
No. Specification). That is, 100 is a seal lip made of plate-shaped polytetrafluoroethylene resin (hereinafter referred to as PTFE), and the base end 101 is connected to the housing 1.
02 inner periphery. The -lurinop +00 extends obliquely toward the rotating shaft 104, and its tip portion slides into contact with the rotating shaft 104 to form a knoll portion 105. This Nor'no.
プ］００の大気側側面にはりノブ先端から所定幅だけね
じ１１↓１０６が設けられており、回転軸＋０４とシー
ルリップ１００との相対回転に佳うねしポンプ作用によ
りノール部１０５から大気側に漏十１出ず流体を密１．
１流体側に押し戻してンール性を向上させていた。A screw 11 ↓ 106 is provided on the atmosphere side side surface of the knob 00 by a predetermined width from the tip of the knob, and a screw 11↓106 is provided on the side surface of the knob 00 by a predetermined width from the tip of the knob. 1. Keep the fluid tightly sealed without leaking.
The liquid was pushed back to the first fluid side to improve the unrollability.
（発明が解決しようとする問題点）
しかし斯かる従来例の場合には、ねし講１０６カ’ ＞
−Ｊ＋／す、ブ１００のり、ブ先端がら大気側にかけ
てソール面１０７全長にわたって連続しテ９、す、わ、
ねし？ｎ １０６を介して密封流体側と大気側とが連通
しているので、シールリップ１’００と回転軸１０４と
の相対回転時にはねしポンプ作用が働くものの静止時に
はねし溝１０６を伝って密ｉｌｔ体○が大気側に漏れる
という問題があった。(Problem to be solved by the invention) However, in the case of such a conventional example,
-J+/Su, Bu 100 glue, continuous over the entire length of the sole surface 107 from the tip of the Bu to the atmosphere side Te9, Su, Wa,
Neshi? Since the sealed fluid side and the atmosphere side are in communication through n 106, when the seal lip 1'00 and the rotating shaft 104 rotate relative to each other, a squirt pump action is activated, but when the seal lip 1'00 is at rest, a seal is generated through the squirt groove 106. There was a problem that the ilt body ○ leaked into the atmosphere.
本発明は上記従来技術の問題点を解決するためになされ
たもので、その目的とするところは、ねしポンプ機能を
保持しつつ静止時の流体の漏れを防止し得るオイルシー
ルを提供すると共に、合ねセでその簡易な製造方法を提
供することにある。The present invention has been made in order to solve the problems of the prior art described above, and its purpose is to provide an oil seal that can prevent fluid leakage when it is stationary while maintaining the squirrel pump function. The object of the present invention is to provide a simple manufacturing method for the assembly.
（問題点を解決するための手段）
上記目的を達成するために、本発明のオイルシールにあ
っては、全長にわたってねし溝を備えたシールリップの
シール面にねじ無し領域を設けたものから成っている。(Means for Solving the Problems) In order to achieve the above object, the oil seal of the present invention includes a seal lip having a threaded groove along its entire length, and a non-threaded area provided on the sealing surface of the seal lip. It has become.
また本発明のオイルシールの製造方法にあっては、円筒
体の端面に、ねし切り手段により螺旋状のね＋；（＋’
Ｓを一部にねし無し領域を残して刻設するねじ切り工程
と、上記円筒体の端部を所定幅で切断して環状のシール
リップを形成する工程と、上記シールリップのねじ溝を
設けた側をシール面として支持部材に組付ける工程とか
ら成っている。Further, in the method for manufacturing an oil seal of the present invention, a spiral thread is formed on the end surface of the cylindrical body by a thread cutting means.
A thread cutting process of carving S leaving a part without threads, a process of cutting the end of the cylindrical body at a predetermined width to form an annular seal lip, and providing a thread groove for the seal lip. and assembling it to the support member with the other side serving as the sealing surface.
（実施例）
以下に本発明を図示の実施例に基づいて説明する。本発
明の一実施例に係るオイルシールを示す第１図において
、■はシールリップ２を備えた外周金属形のオイルシー
ルで、シールリップ２はた゛とえばＰＴＦＥ等の樹脂板
により成形されており、その基端部２ａがハウジング３
内周に固着される支持部材４に組付けられている。支持
部材４はたとえばハウジング３に嵌合される外筒５と外
筒５内周に嵌合される内筒６とから成り、外筒５側縁の
大気側フランジ５ａと内筒６側縁の大気側フランジ６ａ
との間にシールリップ２基端部２ａを挟圧して外筒５の
密封流体側（図中右側）の側縁をかしめて組付けられて
いる。(Example) The present invention will be explained below based on the illustrated example. In FIG. 1, which shows an oil seal according to an embodiment of the present invention, ■ is an oil seal having a metal outer periphery and is provided with a seal lip 2, and the seal lip 2 is formed of a resin plate such as PTFE. , its base end 2a is the housing 3
It is assembled to a support member 4 fixed to the inner periphery. The support member 4 is made up of, for example, an outer cylinder 5 fitted to the housing 3 and an inner cylinder 6 fitted to the inner periphery of the outer cylinder 5. Atmospheric side flange 6a
The proximal end 2a of the seal lip 2 is pressed between the outer cylinder 5 and the sealing fluid side (right side in the figure) side edge of the outer cylinder 5 is caulked and assembled.
シールリップ２け−ｓ ＩＬ、 ｂＷ部２ａから密封流
体側に延びており、゛１ノブ先端部がハウジング３と相
対回転する（本実施例ではハウジング３が固定で輔７が
回転する）回転軸７表面に宗封接触してノール部８を形
成している。Seal lip 2-s IL, b Extends from the W part 2a to the sealed fluid side, and is a rotating shaft in which the tip of the knob 1 rotates relative to the housing 3 (in this embodiment, the housing 3 is fixed and the holder 7 rotates). A knoll portion 8 is formed in contact with the surface of 7.
すなわちノールリップ２の内径は回転軸７外径よりも小
になっており、回転軸７に耕付けた際に１、・ブ先・端
部２ｂが拡径され、リップ先端部２ｂの先端から所定幅
の部分が軸表面に接触してソール面１０となっている。In other words, the inner diameter of the knoll lip 2 is smaller than the outer diameter of the rotary shaft 7, and when the rotary shaft 7 is plowed, the diameter of the tip and end 2b is expanded, and from the tip of the lip tip 2b. A portion of a predetermined width contacts the shaft surface and forms a sole surface 10.
このシールリップ２のソール面１０にはねじ溝９が刻設
されている。ねし溝９のリップ先端側の始端は、リップ
先端から所定幅したけ大気側から形成され、リップ先端
からぬじ溝９始端までの領域がねし興し領域１０ａとな
っている。したがってシール面ＩＯはねし無し領域］、
０２においては回転軸７表面に全周にわたって隙間な
く密着している。ねじ溝９の終端はシールリップ２のシ
ール面１０から大気側側面１０′の括ζ・１．１部２ａ
付近まで延びている。A thread groove 9 is cut into the sole surface 10 of this seal lip 2. The starting end of the threaded groove 9 on the lip tip side is formed from the atmospheric side by a predetermined distance from the lip tip, and the area from the lip tip to the starting end of the threaded groove 9 is a threaded area 10a. Therefore, the seal surface IO splash-free area],
02, it is in close contact with the surface of the rotating shaft 7 over the entire circumference without any gaps. The end of the thread groove 9 is located between the seal surface 10 of the seal lip 2 and the bracket ζ 1.1 part 2a of the atmosphere-side side surface 10'.
It extends to the vicinity.
上記構成のオイルシールにあっては、回転軸７とノール
リップ２との相対回転時にはシール部８のねじ無１−
ＳＲ域１０ａから大気側にイ居れる流体０はねじ無し領
域１０ａに続くねし溝９のねじポンプ作用により密封流
体側に押し戻されて流体の漏れが防止される。さらに回
転軸７とシールリップ２が相対的に静止している場合に
は、大気側と密封流体側とがねじ無し領域１０ａにより
遮断されているので流体の漏れが防止される。In the oil seal having the above configuration, when the rotating shaft 7 and the knoll lip 2 rotate relative to each other, the seal portion 8 has no thread 1-
Fluid 0, which is located on the atmosphere side from the SR region 10a, is pushed back to the sealed fluid side by the screw pumping action of the threaded groove 9 continuing to the non-threaded region 10a, thereby preventing fluid leakage. Furthermore, when the rotating shaft 7 and the seal lip 2 are relatively stationary, the atmosphere side and the sealed fluid side are blocked off by the unthreaded area 10a, so that fluid leakage is prevented.
上記実施例においてはねじ無し領域１０ａをシールリッ
プ２先端に設けたが、シール面１０のうちの一部がねじ
無し領域となっていればよい。In the above embodiment, the non-threaded region 10a is provided at the tip of the seal lip 2, but it is only necessary that a portion of the sealing surface 10 be the non-threaded region.
つぎに本発明のオイルシールの製造方法について第２図
を参照して説明する。図において１１はＰＴＦＥ等の樹
脂円筒体であり、旋盤等にその中心軸線を中心に回転自
在に取付けられている。この樹脂円筒体１１の外周には
樹脂円筒体１１の端部を板状に切り出す切削手段１２と
、端面に螺旋状のねじ溝を刻設するねじ切り手段１３と
が配設されている。切削手段１２による切削は、樹脂円
筒体１１の中心軸ｖＡ（以下Ｘ軸という）と直交する軸
線（以下Ｙ軸という）に対して角度αだけ傾斜した入線
方向に沿って樹脂円筒体１１の外周側から半径方向内方
に向って切削するようになっ７おり、樹脂円筒体１１の
端面ば内径側に角度αだけ傾斜するテーパ面となってい
る。ねし切り手段１３は上記Ｙ軸方向に沿って樹脂円筒
体１１の内周側から外周側に向って移動するようになっ
ている。Next, a method for manufacturing an oil seal according to the present invention will be explained with reference to FIG. In the figure, 11 is a resin cylinder made of PTFE or the like, which is mounted on a lathe or the like so as to be rotatable about its central axis. A cutting means 12 for cutting out the end of the resin cylinder 11 into a plate shape, and a thread cutting means 13 for carving a spiral thread groove on the end surface are disposed on the outer periphery of the resin cylinder 11. The cutting by the cutting means 12 cuts the outer periphery of the resin cylindrical body 11 along the entry direction that is inclined by an angle α with respect to the axis (hereinafter referred to as the Y axis) orthogonal to the central axis vA (hereinafter referred to as the X axis) of the resin cylindrical body 11. Cutting is performed from the side toward the inside in the radial direction 7, and the end surface of the resin cylindrical body 11 is a tapered surface that is inclined at an angle α toward the inner diameter side. The thread cutting means 13 is configured to move from the inner circumferential side of the resin cylindrical body 11 toward the outer circumferential side along the Y-axis direction.
ねし切り手段１３によるねし切り工程にあっては、ねし
切り手段１３先端の刃先の位置を樹脂円筒体１１の中心
軸線方向の内周端縁位置と外周端縁位置との間に位置決
めして、Ｙ軸方向に等速に移動させる。移動させるにつ
れ樹脂円筒体１１端面の内周端から所定幅だけ進んだ位
置でねし切り手段１３の刃先が樹脂円筒体１１端而に当
接してねじを切り始め、樹脂円筒体１１の回転とねし切
り手段１３の移動が相俟って螺旋状に一条ねし溝９が刻
設され、所定幅だけねじ／ｌＩ９を刻設した後ねし切り
手段１３を樹脂円筒体１１端面から離してねし切りが終
了する。この結果樹脂円筒体１１端面には内周端縁から
所定幅だけねじ無し領域１０ａが自動的に形成され、そ
れに続いて所定幅だけねし／＃９が形成されることにな
る。ねし溝９は第３図に示すように内径側は浅く外径側
に向って深く刻設される。上記ねし無し領域１０ａの幅
は、上記ねし切り手段１３のＸ軸位置を樹脂円筒体１１
端面倒に近づければねし溝９の切り始めが早くなるので
狭く、遠ざければねじ溝９の切り始めが遅くなるので広
くなり、容易に調整することができる。なおねし切り手
段１３を複数使用すれば複数条のねじ溝９を形成するこ
とができる。In the thread cutting process by the thread cutting means 13, the cutting edge at the tip of the thread cutting means 13 is positioned between the inner peripheral edge position and the outer peripheral edge position in the central axis direction of the resin cylindrical body 11. and move it at a constant speed in the Y-axis direction. As the resin cylindrical body 11 is moved, the cutting edge of the thread cutting means 13 comes into contact with the end of the resin cylindrical body 11 at a position that has advanced by a predetermined width from the inner circumferential end of the resin cylindrical body 11 and starts cutting the thread, and as the resin cylindrical body 11 rotates, Together with the movement of the thread cutting means 13, a single thread groove 9 is carved in a spiral shape, and after cutting the thread /lI9 by a predetermined width, the thread cutting means 13 is separated from the end surface of the resin cylindrical body 11. Threading is completed. As a result, a threadless region 10a is automatically formed on the end surface of the resin cylindrical body 11 by a predetermined width from the inner circumferential edge, and subsequently a thread/#9 is formed by a predetermined width. As shown in FIG. 3, the threaded groove 9 is shallow on the inner diameter side and deeper toward the outer diameter side. The width of the above-mentioned non-edge region 10a is such that the X-axis position of the above-mentioned edge cutting means 13 is
If it is moved closer to the end surface, the threaded groove 9 starts cutting earlier, making it narrower. If it is moved further away, the threaded groove 9 starts cutting later, making it wider, which can be easily adjusted. If a plurality of thread cutting means 13 are used, a plurality of thread grooves 9 can be formed.
ねじ加工した後、切削手段１２により樹脂円筒体１１端
部を所定の厚さで板状に切り出す。すなわち切削手段１
２のＸ軸方向の位置を樹脂円筒体１１の端面から所定厚
さ分向側に設定し、樹脂円筒体１１を回転させながらＡ
線方向に沿って９３削手段１２を移動させ、環状のソー
ルリップ２を切り出す。さらにこのシールリップ２をた
とえば上記した第１図に示すような支持部材４に組付け
る。After threading, the end portion of the resin cylindrical body 11 is cut into a plate shape with a predetermined thickness by the cutting means 12. That is, the cutting means 1
2 in the X-axis direction from the end surface of the resin cylindrical body 11 by a predetermined thickness, and while rotating the resin cylindrical body 11,
The annular sole lip 2 is cut out by moving the cutting means 12 along the line direction. Further, this seal lip 2 is assembled to a support member 4 as shown in FIG. 1 mentioned above, for example.
第１図に示すオイルシールについて説明すると、外筒５
の密封流体側側端からシールリップ２を嵌込み、さらに
内筒Ｇを嵌込んでシールリップ２の基端部２ａを外筒５
および内筒６の大気側フランジ５ａ、６ａにより挟圧し
、外筒５の密封流体側側端縁を半径方向内方にかしめて
オイルン−ル（Ｄ組付けが完了する。。To explain the oil seal shown in Fig. 1, the outer cylinder 5
Fit the seal lip 2 from the sealed fluid side end, and further fit the inner cylinder G to connect the base end 2a of the seal lip 2 to the outer cylinder 5.
The air-side flanges 5a and 6a of the inner cylinder 6 are then compressed, and the sealing fluid side edge of the outer cylinder 5 is caulked radially inward to complete the oil assembly.
上記実施例ではシールリップ２の内径側から外径側まで
全幅にわたってテーパ状に成形したが、第４回に示すよ
うに内径側のみをテーバ形状としてもよい。この場合に
は樹脂円筒体１１端面の内径側をテーパ面に成形してお
き、ねし切り手段１３により、上記実施例と同様の方法
でねし溝９を夕ｊ設してねじ無し領域１０ａおよびねし
／ｇ ９を形成する。ねし４９を設けた後切削手段１２
により板状のシールリップ２が切り出されるが、切削方
向は傾斜をつけずに樹脂円筒体１１の中心軸線に対して
直交する方向に切削する。その後支持部材４にンールリ
ノフ゛２を−イ本に）Ｊｌ （−ｊける。In the above embodiment, the seal lip 2 is formed into a tapered shape over the entire width from the inner diameter side to the outer diameter side, but as shown in the fourth example, only the inner diameter side may be formed into a tapered shape. In this case, the inner diameter side of the end face of the resin cylindrical body 11 is formed into a tapered surface, and a threaded groove 9 is formed by the threading means 13 in the same manner as in the above embodiment to form a threadless region 10a. and rice/g 9. After providing the thread 49, the cutting means 12
The plate-shaped seal lip 2 is cut out by cutting in a direction perpendicular to the central axis of the resin cylindrical body 11 without any inclination. After that, attach the curly rubber 2 to the support member 4.
このようにして成形されたソールリップ２を「するオイ
ルシールにあっては、第５図に示ずようにリップ先端部
２ｂが肉薄形状となっており、薄肉部の剛性は小さいた
めに緊迫力は小さく摺動抵抗が低減される。またリップ
先端部２ｂは回転軸７に装着する際に延ばされるが、薄
肉のために延びやすく、回転軸７表面となじみやすくな
って良好なソール性能が得られる。In the oil seal having the sole lip 2 formed in this manner, the lip tip 2b has a thin shape as shown in FIG. is small, reducing sliding resistance.Furthermore, the lip tip portion 2b is stretched when attached to the rotating shaft 7, but because of its thin wall, it stretches easily and blends easily with the surface of the rotating shaft 7, resulting in good sole performance. It will be done.
上記実施例ではシールリップ２が回転軸７に）Ｓ接する
タイプのものについて説明したが、第６図に示すような
シールリップ２がハウジング３内固に摺接するタイプの
オイルシールの場合には、第７図に示すように樹脂円筒
体１１の・端面を内径側が外径（ｇｌより突出するテー
バ形状に成形しておき、上記実施例と同様にしてねじ切
り手段１３を外内側から内周側に向ってＹ軸方向に移動
させることにより、自動的にねし無し領域１０ａを形成
することができる。In the above embodiment, the oil seal of the type in which the seal lip 2 is in contact with the rotating shaft 7 has been described, but in the case of an oil seal of the type in which the seal lip 2 is in sliding contact with the interior of the housing 3 as shown in FIG. As shown in FIG. 7, the end face of the resin cylindrical body 11 is formed into a tapered shape in which the inner diameter side protrudes from the outer diameter (gl), and the thread cutting means 13 is inserted from the outer inner side to the inner circumferential side in the same manner as in the above embodiment. By moving it in the Y-axis direction, it is possible to automatically form the non-edge area 10a.
またねじ無し領域１０ａの成形については、卜記実施例
では樹脂円筒体１１の端面をテーバ形状にしてこの傾斜
を利用して形成するようにしたが、たとえばねし切り手
段１３によるねし切り途中においてねし切り手段１３を
樹脂円筒体１１端而から一時離間させることにより形成
するというように、ねし切り手段１３の移動を制御する
よろにしてもよい。Regarding the shaping of the non-threaded region 10a, in the embodiment described above, the end surface of the resin cylindrical body 11 is made into a tapered shape and the inclination is utilized to form the shape. The movement of the thread cutting means 13 may be controlled, such as by temporarily separating the thread cutting means 13 from the resin cylindrical body 11.
なお本実施例ではノールリップの材質としテ樹脂を使用
したが樹脂に限るものではなく、種々のり、ブ材料につ
いて適用し得るものである。In this embodiment, a resin was used as the material for the knoll lip, but the material is not limited to resin and can be applied to various glues and adhesive materials.
（Ｘ１明の効果）
本発明は以上の構成および作用から成るもので、１発明
のオイルシールにあっては、ねし溝が設けられたノール
リップのノール面にねじ無し領域を設けたので、わし無
し領域は回転軸等の回転部材に全周にわたって隙間なく
密接され、シールリップと回転部材とが相対的に静止し
ている場合の流体の漏れを防止することができると共に
、相対回転時にあってはねし無し領域から大気側に漏れ
る流体はねし溝のねじポンプ作用により押し戻されｒシ
好なノール性能を確保することができるという効果が得
られる。(Effect of X1 Brightness) The present invention consists of the above-described structure and operation, and in the oil seal of the first invention, a non-threaded area is provided on the knoll surface of the knoll lip provided with the threaded groove, so that The ridge-less area is in close contact with a rotating member such as a rotating shaft without any gaps over the entire circumference, and can prevent fluid leakage when the seal lip and rotating member are relatively stationary, and can also prevent fluid leakage when the seal lip and rotating member are relatively stationary. Fluid leaking from the non-splash area to the atmosphere side is pushed back by the screw pump action of the splash groove, resulting in the effect that good noll performance can be ensured.
また本発明のすイルシールの！！！遣方法にあっては、
・・ ・１． ＩＩノブのねじ溝およびねじ無し領域を
すしｔ、ＪＪす＋１父によって容易に加工することがで
き、さらに円筒体を切削して連続的にシールリップブを
成形することができるので生産性が高く安価にオイルシ
ールを製造することができるという効果カ得られる。Also, the seal of the present invention! ! ! Regarding the method of sending,
・・1. The threaded groove and non-threaded area of the II knob can be easily machined using SushiT, JJS+1, and the cylindrical body can be cut to continuously form the seal lip, resulting in high productivity. The effect of being able to manufacture oil seals at low cost is obtained.
第１図は本発明の一実施例に係るオイルシールの要部、
縦断面図、第２図は本発明の一実施例に係るオイルシー
ルの製造方法を使用した製造装置の概略斜視図、第３図
は第２図の装置により成形されたシールリップの要部縦
断面図、第４図は第２図の装置を使用して成形されたシ
ールリップの他の態様を示す要部縦断面図、第５図は第
４図のシールリップを備えたオイルシールの使用状態を
示す要部縦断面図、第６図は本発明の他の実施例に係る
オイルシールの要部縦断面図、第７図は第６図のオイル
シールのシールリップを成形する製造装置の概略斜視図
、第８図は従来のオイルシールの要部縦断面図である。
符 号 の 説 明
１・・・オイルノール ２・・・シールリップ、１
・・・支持部材 ９・・・ねし溝１０・・ソー
ル面 １０ａ・・・ねし無し令■域１１・・・樹
脂円筒体（円筒体）
１２・・切削手段 １３・・・ねじ切り手段特許
出願人 エヌオーケー株式会社
′ ト、
代理人 弁ＩＩｐ士 世 良 相 信、１．
＼。
゛ぐ恒−・′
第１図
第４図
第５図
［１，６口
Ｗ
第８図FIG. 1 shows the main parts of an oil seal according to an embodiment of the present invention.
2 is a schematic perspective view of a manufacturing apparatus using the oil seal manufacturing method according to an embodiment of the present invention, and FIG. 3 is a longitudinal sectional view of a main part of a seal lip formed by the apparatus shown in FIG. 2. 4 is a longitudinal cross-sectional view of a main part showing another aspect of the seal lip formed using the apparatus shown in FIG. 2, and FIG. 5 is a diagram showing the use of an oil seal equipped with the seal lip shown in FIG. 4. FIG. 6 is a longitudinal sectional view of the essential parts of an oil seal according to another embodiment of the present invention, and FIG. 7 is a longitudinal sectional view of the essential parts showing the state of the oil seal. FIG. FIG. 8 is a schematic perspective view and a vertical cross-sectional view of a main part of a conventional oil seal. Explanation of symbols 1...Oil nol 2...Seal lip, 1
...Supporting member 9...Thread groove 10...Sole surface 10a...No thread area 11...Resin cylindrical body (cylindrical body) 12...Cutting means 13...Thread cutting means patent Applicant: NOK Co., Ltd. Agent: Sonobu Sera, Attorney IIp, 1.
\. Figure 1 Figure 4 Figure 5 [1,6 mouth W Figure 8
Claims (2)
リップを有するオイルシールにおいて、上記シールリッ
プのシール面にねじ無し領域を設けたことを特徴とする
オイルシール。(1) An oil seal having a seal lip having a threaded groove over its entire length on the sealing surface, characterized in that a non-threaded region is provided on the sealing surface of the sealing lip.
じ溝を一部にねじ無し領域を残して刻設するねじ切り工
程と、上記円筒体の端部を所定幅で切断して環状のシー
ルリップを形成する工程と、上記シールリップのねじ溝
を設けた側をシール面として支持部材に組付ける工程と
から成るオイルシールの製造方法。(2) A thread-cutting process in which a spiral thread groove is carved into the end surface of the cylindrical body by a thread-cutting means, leaving a part without a thread, and the end of the cylindrical body is cut at a predetermined width to form an annular seal. A method for manufacturing an oil seal, comprising the steps of forming a lip and assembling the seal lip onto a support member using the threaded side of the seal lip as a sealing surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60205110A JPS6267372A (en) | 1985-09-17 | 1985-09-17 | Oil seal and its manufacture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60205110A JPS6267372A (en) | 1985-09-17 | 1985-09-17 | Oil seal and its manufacture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6267372A true JPS6267372A (en) | 1987-03-27 |
| JPH0546471B2 JPH0546471B2 (en) | 1993-07-14 |
Family
ID=16501586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60205110A Granted JPS6267372A (en) | 1985-09-17 | 1985-09-17 | Oil seal and its manufacture |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6267372A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005155694A (en) * | 2003-11-21 | 2005-06-16 | Nok Corp | Sealing device |
| JP2006170269A (en) * | 2004-12-14 | 2006-06-29 | Nok Corp | Seal for powder |
| JP2006266343A (en) * | 2005-03-23 | 2006-10-05 | Nok Corp | Sealing device |
| WO2007091739A1 (en) * | 2006-02-10 | 2007-08-16 | Nok Corporation | Seal with controllable pump rate |
| WO2007094440A1 (en) * | 2006-02-13 | 2007-08-23 | Nok Corporation | Bi-directional pattern for dynamic seals |
| JP2008069909A (en) * | 2006-09-15 | 2008-03-27 | Mitsubishi Cable Ind Ltd | Rotary shaft seal |
| US8376369B2 (en) | 2006-02-10 | 2013-02-19 | Freudenberg-Nok General Partnership | Seal with spiral grooves and contamination entrapment dams |
| US8919782B2 (en) | 2012-10-19 | 2014-12-30 | Freudenberg-Nok General Partnership | Dynamic lay down lip seal with bidirectional pumping feature |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57186665A (en) * | 1981-05-11 | 1982-11-17 | Akira Washida | Preparation of oil seal by die setting and oil seal |
| JPS5818895A (en) * | 1981-07-24 | 1983-02-03 | 松下電器産業株式会社 | heating cooker |
| JPS60157569A (en) * | 1983-12-19 | 1985-08-17 | シカゴ・ロ−ハイド・マニフアクチユアリング・コンパニ− | Fluid seal and manufacture thereof |
-
1985
- 1985-09-17 JP JP60205110A patent/JPS6267372A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57186665A (en) * | 1981-05-11 | 1982-11-17 | Akira Washida | Preparation of oil seal by die setting and oil seal |
| JPS5818895A (en) * | 1981-07-24 | 1983-02-03 | 松下電器産業株式会社 | heating cooker |
| JPS60157569A (en) * | 1983-12-19 | 1985-08-17 | シカゴ・ロ−ハイド・マニフアクチユアリング・コンパニ− | Fluid seal and manufacture thereof |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005155694A (en) * | 2003-11-21 | 2005-06-16 | Nok Corp | Sealing device |
| JP2006170269A (en) * | 2004-12-14 | 2006-06-29 | Nok Corp | Seal for powder |
| JP2006266343A (en) * | 2005-03-23 | 2006-10-05 | Nok Corp | Sealing device |
| WO2007091739A1 (en) * | 2006-02-10 | 2007-08-16 | Nok Corporation | Seal with controllable pump rate |
| JP2009526170A (en) * | 2006-02-10 | 2009-07-16 | Ｎｏｋ株式会社 | Seal with controllable pump speed |
| EP2008006A4 (en) * | 2006-02-10 | 2011-06-08 | Freudenberg Carl Kg | Seal with controllable pump rate |
| US8376369B2 (en) | 2006-02-10 | 2013-02-19 | Freudenberg-Nok General Partnership | Seal with spiral grooves and contamination entrapment dams |
| US8925927B2 (en) | 2006-02-10 | 2015-01-06 | Freudenberg-Nok General Partnership | Seal with controllable pump rate |
| WO2007094440A1 (en) * | 2006-02-13 | 2007-08-23 | Nok Corporation | Bi-directional pattern for dynamic seals |
| JP2009526951A (en) * | 2006-02-13 | 2009-07-23 | Ｎｏｋ株式会社 | Bidirectional pattern for dynamic sealing |
| JP2008069909A (en) * | 2006-09-15 | 2008-03-27 | Mitsubishi Cable Ind Ltd | Rotary shaft seal |
| US8919782B2 (en) | 2012-10-19 | 2014-12-30 | Freudenberg-Nok General Partnership | Dynamic lay down lip seal with bidirectional pumping feature |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0546471B2 (en) | 1993-07-14 |
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| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |