WO1995033150A1 - Spinning lip oil seal of elastic material - Google Patents

Spinning lip oil seal of elastic material Download PDF

Info

Publication number
WO1995033150A1
WO1995033150A1 PCT/JP1995/000945 JP9500945W WO9533150A1 WO 1995033150 A1 WO1995033150 A1 WO 1995033150A1 JP 9500945 W JP9500945 W JP 9500945W WO 9533150 A1 WO9533150 A1 WO 9533150A1
Authority
WO
WIPO (PCT)
Prior art keywords
elastic material
rotating shaft
oil seal
lip oil
elastic
Prior art date
Application number
PCT/JP1995/000945
Other languages
French (fr)
Japanese (ja)
Inventor
Yutaka Tomoyasu
Original Assignee
Tomoyasu, Yoko
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from JP6150665A external-priority patent/JPH07317915A/en
Priority claimed from JP7035814A external-priority patent/JPH08193660A/en
Priority claimed from JP7104515A external-priority patent/JPH08270800A/en
Application filed by Tomoyasu, Yoko filed Critical Tomoyasu, Yoko
Priority to AU24543/95A priority Critical patent/AU2454395A/en
Publication of WO1995033150A1 publication Critical patent/WO1995033150A1/en

Links

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

Definitions

  • the elastic member is tightly fixed to the rotating shaft and rotates together with the rotating shaft, so that the outer periphery thereof constitutes a lip, and the inner wall and the inner periphery with the tapered portion form a lip. constitutes a rib, which consists of an outer circumference with a tapered portion, and in both cases, is in partial contact with an external case made of a non-elastic material, and by the rib, the heat from inside the device is reduced.
  • This article relates to an oil seal that has a mechanism that prevents leakage of oil to the outside. Background technology
  • a ring with a pointed end made of an elastic material held by a fixed inelastic material outer ring, called a live oil seal is pressed against the surface of the rotating shaft.
  • Oil seals are used in many fields to prevent the leakage of oil from the surface of the rotating shaft, and these oil seals are used to prevent the refrigerant from flowing through the compressor of air conditioners. It is used for sealing oil and other components such as engines, converters, pumps, and motors.
  • most of them have incomplete sealing performance due to various usage conditions including wear and swelling of the rib material because the rib part made of elastic rest is in direct frictional contact with the surface of the rotating shaft. There were problems with reliability and certainty.
  • the tip of the rib is a thin wire ring, and the outer circumference of the rotating shaft is in direct contact with the external space.
  • the rotation speed of the rotating shaft slows down, the structure of the elastic rest material cannot follow and the torsion becomes an internal loss, weakening the repulsive force due to compression. As a result, it contracts in the direction of centrifugal force, creating a space between it and the surface of the rotating shaft, which increases the leakage.
  • the frozen elastic material often leaked because it could not structurally compensate for the misalignment of the shaft center at the time of start-up in cold regions.
  • the elastic material of the elastic rotating rib sill is tightly fixed to the surface of the rotating shaft and rotates together. It is a structure in which the lip part maintains strong contact with the outer and inner wall parts in proportion to the rotational acceleration in the direction, and the undulation of the tapered part blocks the passage with the outside. Because it is a structurally supporting mechanism, it is pressure resistant, durable, structurally stable, and provides stable sealing. Therefore, the present invention aims at stably preventing oil leakage from the rotating shaft and its surroundings even in the case of an oil seal for the rotating shaft, which requires large internal pressure and high-speed rotation.
  • an elastic material as a sealing material is co-operated with the rotating shaft by fixing the inner periphery thereof in close contact with the surface of the rotating shaft, while the outer ring is fixed on the outer periphery thereof.
  • the flow inside the device is prevented from flowing out to the outside, and one or both of them are partially tapered to support the elastic material.
  • It is an oil seal that maintains sealing performance against wear and internal pressure. It has a structure that prevents leakage to the outside along its outer circumference .
  • FIG. 1 is a cross-sectional view of an elastic rotating oil seal according to the present invention applied to a rotating shaft.
  • FIG. 1 shows a portion of an outer case 3 whose tip is inelastic material and whose inner periphery is spread out over a rotary shaft 4 and is tightly fixed to the surface while a lip 2 is formed on its outer periphery. It shows a cross section in which the bottom portion 5 of the tapered portion 7 that constitutes the portion is in contact with the inner wall. It is a structure that prevents the leakage of fluid from the space of the housing of the device by applying it.
  • the tapered portion 7 serves as a support and supplements the wear of the wear, and at the same time, the structure maintains stable sealing performance by increasing the degree of contact against the internal pressure.
  • the present invention can be applied to engines, compressors, motors, pumps, compressors, etc., as a leak-stopper for leakage from around the rotation shaft. It is useful not only for preventing motor and gear leakage, but also for protecting the rotating shaft surface from scratches and dust from the outside. It is effective in preventing leakage .

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing With Elastic Sealing Lips (AREA)

Abstract

The invention relates to a spinning lip oil seal of elastic material which is capable of providing a sealing quality of high performance even in the case of high speed rotation and high internal pressures, and which comprises the elastic material (1) adapted to be closely fixed to a rotating shaft (4) as a sealing material and rotate with the rotating shaft, and an outer frame ring (3) which is provided on the outer periphery of the elastic material, is formed of a non-elastic material and is formed with a tapered portion (7), the inner wall of which being partly in contact with a lip (2) of the elastic material (1).

Description

明 細 書 弾性材自転リ ッ ブオ イ ル シ ― ル 技術分野 Specifications Rotating Elastic Ribs Oil Seal Technical Field
こ の発明は 、 弾性 t才が回転軸 ¾而に密着固定されて回転軸と共転する こ と に依り 、 その外周が リ ッ プを構成し 、 テ - パ -部分付きの内壁と内 周がリ ッ ヷを構成し 、 テ - パ -部分付きの外周からな り 、 何れの場合も 非弾性材からなる外部ケ ー ス と リ ッ ブで部分接触する こ と に依り 、 装置 内部からの流休が外部に洩れない仕組みのオ イ ル シ - ルに関する 。 背景技術 According to this invention, the elastic member is tightly fixed to the rotating shaft and rotates together with the rotating shaft, so that the outer periphery thereof constitutes a lip, and the inner wall and the inner periphery with the tapered portion form a lip. constitutes a rib, which consists of an outer circumference with a tapered portion, and in both cases, is in partial contact with an external case made of a non-elastic material, and by the rib, the heat from inside the device is reduced. This article relates to an oil seal that has a mechanism that prevents leakage of oil to the outside. Background technology
従来から 、 所謂リ ジ ブオ イ ルシ - ル と称される 、 固定された非弾性材 外環に依って保持された弾性材からなる先端が尖った リ ン グを回転軸表 面に押し付ける こ と によ っ て回転軸表面からの流休の洩れを防止するォ イ ル ン - ルが多方面に使用されている ， これらオイ ルシ - ルは空調器の コ ン ブ レ ッ サ - の冷媒の密封や 、 エ ン ジン 、 コ ンバー タ ー 、 ポ ン プ 、 モ 一 タ -等のオ イ ルや期待の密封に使用されている 。 しかし その多く は、 弾性休からな る リ ッ ブ部分が回転軸表面の直接の摩擦接触する こ とから リ ッ ブ材の摩耗や膨潤を含む種種の使用条件に依り シール性能が不完全 で耐久性や確実性に問題があ った。 例えば、 装置内部の流休の圧力が高 い場合 リ ッ ブ先端が細い線の環である上、 回転軸の外周が外部空間と直 接繁つている為、 内圧が大きい埸合、 流休が外部に洩れ易 く な る欠陥が ある . 又、 回転軸の回転速度が昴った場台、 弾性休材の組織が追随出来 ずねじれが内部ロ ス とな り圧縮に依る反撥力が弱ま って洩れに がる こ と と遠心力方向に縮ま って回転軸表面との間に空間が発生 し洩れに繁が る結果と なる ， 又、 寒冷地等で起動時に於ける軸芯のズ レ を凍結し た弾 性材が構造的に補足出来ずに洩れる こ とが多かった。 こ の何れの場台に も 、 当該弾性 t才自転 リ ッ ブシ ルは弾性材が回転軸表面に密着固定され 共転する こ と によ り 、 シ ル材と しての弾性材が遠心力方向に回転加速 度に比例して リ ッ プ部分が外 ^内壁部に強く 接触を保つ構造であり 、 テ - パ - 部の起伏が外部との通路を遮断する構造である と同時に弾性材を 構造的に支える機構である為、 耐圧、 耐久、 構造であ り安定 し た密封性 が得られる 。 従って 、 本発明は大きな内圧や高速回転を必要とする回転 軸のオ イ ルシ 一 ）レに も 、 回転軸と その周囲からの流休の洩れを安定 して 防止する こ と を 目的と している 。 発明の開示 Conventionally, a ring with a pointed end made of an elastic material held by a fixed inelastic material outer ring, called a live oil seal, is pressed against the surface of the rotating shaft. Oil seals are used in many fields to prevent the leakage of oil from the surface of the rotating shaft, and these oil seals are used to prevent the refrigerant from flowing through the compressor of air conditioners. It is used for sealing oil and other components such as engines, converters, pumps, and motors. However, most of them have incomplete sealing performance due to various usage conditions including wear and swelling of the rib material because the rib part made of elastic rest is in direct frictional contact with the surface of the rotating shaft. There were problems with reliability and certainty. For example, when the flow pressure inside the device is high, the tip of the rib is a thin wire ring, and the outer circumference of the rotating shaft is in direct contact with the external space. In addition, when the rotation speed of the rotating shaft slows down, the structure of the elastic rest material cannot follow and the torsion becomes an internal loss, weakening the repulsive force due to compression. As a result, it contracts in the direction of centrifugal force, creating a space between it and the surface of the rotating shaft, which increases the leakage. In addition, the frozen elastic material often leaked because it could not structurally compensate for the misalignment of the shaft center at the time of start-up in cold regions. In any of these cases, the elastic material of the elastic rotating rib sill is tightly fixed to the surface of the rotating shaft and rotates together. It is a structure in which the lip part maintains strong contact with the outer and inner wall parts in proportion to the rotational acceleration in the direction, and the undulation of the tapered part blocks the passage with the outside. Because it is a structurally supporting mechanism, it is pressure resistant, durable, structurally stable, and provides stable sealing. Therefore, the present invention aims at stably preventing oil leakage from the rotating shaft and its surroundings even in the case of an oil seal for the rotating shaft, which requires large internal pressure and high-speed rotation. there is Invention disclosure
本発明は 、 シ - ル材と し ての弾性材をその内周を回転軸の表面に密着 固定させる こ と に依り 、 回転軸と共耘させ、 一方その外周を固定さ れた 外環ケ - スの内壁と部分接触させる こ と に依り 、 装置内部の流休の外部 流出を阻止し 、 その何れか一方又は両方に一部テ - パ - を施すこ と によ つて弾性材を支えて摩耗や内圧に対して密封性を保持するオ イ ル シール である . 又、 本発明は固定された外部環の外周に別の弾性材の琛を適用 する こ とに依り装置内部の流休がその外周を伝って外部の洩れを防ぐ構 造になっている . 従って 、 装置内部の流休が何れも外部に洩れない構造 にな っている . 図面の簡単な説明 According to the present invention, an elastic material as a sealing material is co-operated with the rotating shaft by fixing the inner periphery thereof in close contact with the surface of the rotating shaft, while the outer ring is fixed on the outer periphery thereof. -By partially contacting the inner wall of the device, the flow inside the device is prevented from flowing out to the outside, and one or both of them are partially tapered to support the elastic material. It is an oil seal that maintains sealing performance against wear and internal pressure. It has a structure that prevents leakage to the outside along its outer circumference .
第 1 図は こ の発明にかかる弾性材自転オ イ ル シ - ルを回転軸に適用し た際の断面を示す図である 。 発明を実施する為の最良の形態 FIG. 1 is a cross-sectional view of an elastic rotating oil seal according to the present invention applied to a rotating shaft. BEST MODE FOR CARRYING OUT THE INVENTION
本発明をよ り詳細に説述する為に 、 添付の図面に従って 、 こ れを説明 する 。 In order to describe the present invention in more detail, it will be described according to the accompanying drawings.
第 1 図は、 回転軸 4 に弾性材 1 の内周を押し拡げて表面に密着固定し 一方その外周で リ ッ プ 2 を構成している先端が非弾性材の外瑁ケー ス 3 の一部が構成しているテ - パ -部 7 の裾部 5 でその内壁に接触している 断面を示している ， 又、 非弾性忖の舛環ケ ー ス の外周に別の弾性材 6 を 適用して装置のハウ ジン グの空間からの流休の洩れを こ れによ つて防止 する構造である 、 回転軸 4 と弾性材 1 が共転する こ と によ り依り 、 リ ツ プ先端が摩耗した場合、 上記テ - パ -部 7 が支え とな って補足する構造 である と同時に内圧に対して接触度を増すこ と に依って安定した密封性 を保持する構造である 。 産業上の利用可能性 FIG. 1 shows a portion of an outer case 3 whose tip is inelastic material and whose inner periphery is spread out over a rotary shaft 4 and is tightly fixed to the surface while a lip 2 is formed on its outer periphery. It shows a cross section in which the bottom portion 5 of the tapered portion 7 that constitutes the portion is in contact with the inner wall. It is a structure that prevents the leakage of fluid from the space of the housing of the device by applying it. The tapered portion 7 serves as a support and supplements the wear of the wear, and at the same time, the structure maintains stable sealing performance by increasing the degree of contact against the internal pressure. Industrial applicability
以上のよ う に、 本発明は回転軸の回 りからの流休の洩れ止めと して 、 エ ン ジ ン 、 コ ン ブ レ ジ サ 一 、 モ — タ ー 、 ポ ン プ 、 コ ン バ ー タ — 、 ギ ア — の洩れ止めと同時に回転軸表面の防傷及び外部からの防塵機槨と して有 用であ り 、 特に流休が細かな粒子のフ レオ ンや粉休等の洩れ防止に有効 である . As described above, the present invention can be applied to engines, compressors, motors, pumps, compressors, etc., as a leak-stopper for leakage from around the rotation shaft. It is useful not only for preventing motor and gear leakage, but also for protecting the rotating shaft surface from scratches and dust from the outside. It is effective in preventing leakage .

Claims

請 求 の 範 囲 The scope of the claims
1 . 弾性材が回耘軸表面に密着固定さ れて回 軸と共転する リ ソ プオ イ ルシ ー ル。 1. A lithop oil seal in which an elastic material is closely fixed to the surface of the rotating shaft and rotates together with the rotating shaft.
2 . 非弾性材からなる ^環外枠の一部にテ - パ を構成する こ と を特徴 とする請求の範囲第 1 項記載の リ ッ ブオ イ ルシ ル。 2. The rib oil sill according to claim 1, characterized in that a portion of the outer frame made of non-elastic material is tapered.
PCT/JP1995/000945 1994-05-30 1995-05-18 Spinning lip oil seal of elastic material WO1995033150A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU24543/95A AU2454395A (en) 1994-05-30 1995-05-18 Spinning lip oil seal of elastic material

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP6/150665 1994-05-30
JP6150665A JPH07317915A (en) 1994-05-30 1994-05-30 Self-rotary oil seal with hard lip
JP7035814A JPH08193660A (en) 1995-01-17 1995-01-17 Revolving oil seal having pressure and wear resistant groove of plural rip type
JP7/35814 1995-01-17
JP7104515A JPH08270800A (en) 1995-03-27 1995-03-27 Vortex flow system autorotating lip oil seal
JP7/104515 1995-03-27

Publications (1)

Publication Number Publication Date
WO1995033150A1 true WO1995033150A1 (en) 1995-12-07

Family

ID=27288885

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1995/000945 WO1995033150A1 (en) 1994-05-30 1995-05-18 Spinning lip oil seal of elastic material

Country Status (2)

Country Link
AU (1) AU2454395A (en)
WO (1) WO1995033150A1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS517419Y2 (en) * 1971-09-04 1976-02-28
JPS5644941Y2 (en) * 1976-08-03 1981-10-21

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS517419Y2 (en) * 1971-09-04 1976-02-28
JPS5644941Y2 (en) * 1976-08-03 1981-10-21

Also Published As

Publication number Publication date
AU2454395A (en) 1995-12-21

Similar Documents

Publication Publication Date Title
WO1993017263A1 (en) Hermetic sealing device
JP2989151B2 (en) Contact seals for fluid machines having high temperatures in the sealing area and / or rotating at high speed
US5975538A (en) Radial lip shaft seal
JPH0211655Y2 (en)
WO2021182057A1 (en) Sealing device and reduction gear
WO1995033150A1 (en) Spinning lip oil seal of elastic material
JPH0363594B2 (en)
CN210715957U (en) Labyrinth sealing device based on felt sealing ring
US4426089A (en) Dust-proof device for mechanical seal
JP3008177U (en) Self-excited vibration prevention mechanism of mechanical seal
EP3742027A1 (en) Seal structure and seal to be used in same
JPH0721969Y2 (en) Lip seal
JPH09133217A (en) Lip type seal
CN210637508U (en) Dustproof sealing device for rotating shaft
JPH0225975Y2 (en)
JPH077889A (en) Dustproof construction of fan motor
JP2006177500A (en) Mechanical seal
US20220243823A1 (en) Sealing device and sealing structure
JPH0449412Y2 (en)
JPH028184B2 (en)
JPH026302Y2 (en)
JPH0246316A (en) Rotary-motion transmission gear for vacuum chamber
JPH0129318Y2 (en)
JP2024130382A (en) Shaft seal device
JPH0614630U (en) Oil seal

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AT AU BB BG BR BY CA CH CN CZ DE DK ES FI GB HU KR LK MX NO NZ PL PT RO RU SE SK US VN

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LU MC NL PT SE

121 Ep: the epo has been informed by wipo that ep was designated in this application
122 Ep: pct application non-entry in european phase
REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

NENP Non-entry into the national phase

Ref country code: CA