WO2014054473A1 - 密封装置 - Google Patents
密封装置 Download PDFInfo
- Publication number
- WO2014054473A1 WO2014054473A1 PCT/JP2013/075795 JP2013075795W WO2014054473A1 WO 2014054473 A1 WO2014054473 A1 WO 2014054473A1 JP 2013075795 W JP2013075795 W JP 2013075795W WO 2014054473 A1 WO2014054473 A1 WO 2014054473A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- seal ring
- ring
- support ring
- sealing device
- inner peripheral
- Prior art date
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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
- F16J15/18—Sealings between relatively-moving surfaces with stuffing-boxes for elastic or plastic packings
-
- 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
- F16J15/18—Sealings between relatively-moving surfaces with stuffing-boxes for elastic or plastic packings
- F16J15/184—Tightening mechanisms
- F16J15/185—Tightening mechanisms with continuous adjustment of the compression of the packing
- F16J15/186—Tightening mechanisms with continuous adjustment of the compression of the packing using springs
-
- 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
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/08—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with exclusively metal packing
- F16J15/0818—Flat gaskets
- F16J15/0825—Flat gaskets laminated
Definitions
- the gap between the tapered pressing surface provided on the support ring and the seal ring is likely to occur.
- the sealing ring is provided with a tapered pressed surface. This is because it is required to align the taper angle of the pressing surface and the taper angle of the pressed surface. In other words, the crushing margin for the pressing surface is not set in the seal ring.
- the crushing margin for the pressing surface of the support ring is always set at the inner peripheral corner of the seal ring, and if the crushing margin is always set, there is no room for clearance. It will be.
- the inner peripheral corner of the seal ring In order to always set the crushing allowance, it is preferable to make the inner peripheral corner of the seal ring have a round shape with a circular arc cross section, and to make this round shape always interfere with the tapered pressing surface.
- FIG. 1 shows a sealing device according to an embodiment of the present invention. That is, this sealing device is mounted on the annular mounting groove 3 provided on the outer peripheral surface 1a of one member 1 of the two members 1 and 2 that move relative (relatively rotate or swing relative) and The two members 1 and 2 are sealed by being in close contact with the other member 2 located on the outer peripheral side and the one side wall 3a of the mounting groove 3, and a resin seal made of PTFE or the like as a component thereof It has a ring 11, a support ring 21 made of a rigid material such as metal, and a rubber ring 31 as a spring means.
- the mounting groove 3 has a half-cut rectangular shape.
- the seal ring 11 includes a cylindrical outer peripheral surface 11a, an axially perpendicular end surface 11b, a cylindrical inner peripheral surface 11c, and an axially perpendicular end surface 11d.
- the shape is rectangular or substantially rectangular, and the outer peripheral surface 11a is slidably in contact with the inner peripheral surface 2a of the other member 2, and the one end surface 11b in the axial direction is in close contact with one side wall 3a of the mounting groove 3. .
- the support ring 21 is also provided with an outer peripheral surface 21a, one axial end surface 21b having a plane perpendicular to the axis, a cylindrical inner peripheral surface 21c, and the other axial end surface 21d having a semi-rectangular cross section. Although it has a substantially rectangular shape and is assembled on the inner peripheral side of the seal ring 11, the outer peripheral surface 21a has the other axial end where the inner peripheral surface 11c of the seal ring 11 and the other end surface 11d in the axial direction intersect.
- a tapered pressing surface 22 that contacts the inner peripheral corner portion 11e is provided.
- a cylindrical straight portion 23 is continuously provided on one side of the taper-shaped pressing surface 22 in the axial direction, and a flange-like protruding portion 24 is provided on the other axial side of the opposite side. It is provided toward the outer peripheral direction.
- the rubber ring 31 also has a half-cut rectangular shape or a substantially rectangular shape, and is interposed between the other axial end surface 21d of the support ring 21 and the other side wall 3c of the mounting groove 3 in a compressed state.
- the support ring 21 is pressed in one axial direction with force, and the seal ring 11 is pressed against the inner peripheral surface 2a of the other member 2 and one side wall of the mounting groove 3 through the tapered pressing surface 22 of the support ring 21. It is pushing toward 3a.
- the sealing device is not particularly provided in the sealing device according to the comparative example of FIG. 3, and the taper surface-like pressing surface 22 of the support ring 21 is formed on the other inner peripheral corner 11 e in the axial direction of the seal ring 11.
- the other inner peripheral corner portion 11e in the axial direction of the seal ring 11 has an arcuate shape with a circular arc cross section.
- the inner diameter dimension of the seal ring 11 is set to be larger than the minimum outer diameter dimension of the tapered pressing surface 22 and smaller than the maximum outer diameter dimension.
- a circular arc-shaped cross section also referred to as an interference portion or an overlap portion
- a circular arc-shaped cross section that always interferes with the tapered pressing surface 22 of the support ring 21 is provided on the other inner peripheral corner portion 11e in the axial direction of the seal ring 11. It has been.
- the crushing margin for the tapered pressing surface 22 of the support ring 21 is always set at the other inner peripheral corner 11e in the axial direction of the seal ring 11, the inner periphery of the seal ring 11 There is no gap between the corner 11e and the pressing surface 22 of the support ring 21. Accordingly, it is possible to suppress and improve the pressure resistance degradation and the sealing performance due to the occurrence of the gap.
- the support ring 21 supports the seal ring 11 from the inner peripheral side, the deformation of the seal ring 11 in the inner peripheral direction is suppressed even when the pressure P is applied. Therefore, a clearance is hardly generated on the outer peripheral side of the seal ring 11, and the sealing performance can be improved.
- the round shape provided in the other inner peripheral corner portion 11e in the axial direction of the seal ring 11 is a dimension capable of securing a crush of 0.1 mm or more with respect to the tapered pressing surface 22 of the support ring 21. .
- the radial width dimension ((outer diameter ⁇ inner diameter) / 2) of one end face 21b in the axial direction of the support ring 21 is the diameter between the bottom wall 3b of the mounting groove 3 and the inner peripheral face 2a of the other member 2.
- a range of 50 to 60% of the directional interval dimension is preferable.
- the axial width dimension of the support ring 21 is preferably in the range of 50 to 60% of the axial width dimension of the mounting groove 3.
- the radial width dimension ((outer diameter ⁇ inner diameter) / 2) of the rubber ring 31 is 55 to 65 of the radial distance between the bottom wall 3b of the mounting groove 3 and the inner peripheral surface 2a of the other member 2. % Is preferable.
- the axial width dimension of the rubber ring 31 is preferably in the range of 40 to 50% of the axial width dimension of the mounting groove 3.
- the filling rate of the rubber ring 31 is preferably 100% or less.
- the material of the resin seal ring 11 may be hard resin such as nylon in addition to PTFE.
- the material of the support ring 21 may be any metal material such as an iron material or SUS.
- the material of the rubber ring 21 may be any rubber-like elastic body such as NBR, FKM, EPDM or the like.
- the rubber ring 31 may be replaced by other spring means such as a metal spring.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Devices (AREA)
- Gasket Seals (AREA)
Abstract
Description
(1)本発明の密封装置は、シールリング(PTFEリング)、支持リング(金属リング)およびバネ手段(ゴムリング)による組み合わせシールである。
(2)図3の比較例におけるシールリングの断面形状を内周テーパ部から角部Rへ変更することにより、支持リングテーパ部に対し、つぶしを持たせる。
(3)シールリングと支持リング外周テーパ部につぶしを持たせることで、常にシールリングと支持リング外周テーパ部を接触させた状態とすることにより、くさび効果を生じさせ、シールリングを相手シール面に押し付けることができる。
(4)図3の比較例に対し、シールリング断面形状を変更し、支持リングテーパ部に対し、つぶしを有する設定とすることで、常に、くさび効果を生じさせることにより、PTFEリングを相手シール面に押し付ける。これにより隙間がは接せず、シール性を確保することができる。
(1)シールリング11の径方向幅寸法((外径-内径)/2)は、装着溝3の底壁3bおよび他方の部材2の内周面2a間の径方向間隔寸法の35~45%の範囲とすることが好ましい。
(2)シールリング11の軸方向幅寸法は、装着溝3の軸方向幅寸法の40~50%の範囲とすることが好ましい。
(3)シールリング11の外径寸法は、他方の部材2の内周面2a(装着溝外径)に対する締め代を0~0.5mm/径の範囲とすることが好ましい。
(4)シールリング11の軸方向他方の内周角部11eに設けるアール形状は、支持リング21のテーパ面状の押圧面22に対し、つぶしを0.1mm以上確保できる寸法とすることが好ましい。
(5)支持リング21の軸方向一方の端面21bの径方向幅寸法((外径-内径)/2)は、装着溝3の底壁3bおよび他方の部材2の内周面2a間の径方向間隔寸法の50~60%の範囲とすることが好ましい。
(6)支持リング21の軸方向幅寸法は、装着溝3の軸方向幅寸法の50~60%の範囲とすることが好ましい。
(7)支持リング21と他方の部材2との間には、少なくとも0.05mm/径の隙間を設定することが好ましい。
(9)ゴムリング31の軸方向幅寸法は、装着溝3の軸方向幅寸法の40~50%の範囲とすることが好ましい。
(10)ゴムリング31の充填率は、100%以下とすることが好ましい。
(11)樹脂製のシールリング11の材質は、PTFEのほか、ナイロン等の硬質樹脂などであっても良い。
(12)支持リング21の材質は、鉄系材料、SUS等、金属系材料であれば何れであっても良い。
(13)ゴムリング21の材質は、NBR、FKM、EPDM等、ゴム状弾性体であれば何れであっても良い。
(14)ゴムリング31は、これに代えて金属バネなどの他のバネ手段であっても良い。
1a,11a,21a 外周面
2 他方の部材
2a,11c,21c 内周面
3 装着溝
3a,3c 側壁
3b 底壁
11 シールリング
11b,11d,21b,21d 端面
11e 内周角部
12 被押圧面
21 支持リング
22 押圧面
23 ストレート面
24 突出部
31 ゴムリング(バネ手段)
Claims (2)
- 相対運動する二部材のうちの一方の部材の外周面に設けた装着溝に装着されるとともに前記装着溝の外周側に位置する他方の部材および前記装着溝の一方の側壁に密接することにより前記二部材間をシールする密封装置であって、
前記他方の部材に摺動可能に密接する外周面、前記装着溝の一方の側壁に密接する軸方向一方の端面、内周面および軸方向他方の端面を備える樹脂製のシールリングと、前記シールリングにおける軸方向他方の内周角部に接触するテーパ面状の押圧面を備えて前記シールリングに組み合わされる金属等剛材製の支持リングと、前記支持リングおよびシールリングを押圧するバネ手段と、を有し、
前記シールリングにおける前記軸方向他方の内周角部には、前記支持リングにおける前記テーパ面状の押圧面に対するつぶし代が常に設定されていることを特徴とする密封装置。 - 請求項1記載の密封装置において、
前記シールリングにおける前記軸方向他方の内周角部は、断面円弧形のアール形状とされることにより、前記支持リングにおける前記テーパ面状の押圧面に対するつぶし代が常に設定されていることを特徴とする密封装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2014501348A JP5547354B1 (ja) | 2012-10-03 | 2013-09-25 | 密封装置 |
EP13844271.0A EP2905518B1 (en) | 2012-10-03 | 2013-09-25 | Sealing device |
US14/378,807 US9080672B2 (en) | 2012-10-03 | 2013-09-25 | Sealing device |
CN201380004271.8A CN103998834A (zh) | 2012-10-03 | 2013-09-25 | 密封装置 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012-220957 | 2012-10-03 | ||
JP2012220957 | 2012-10-03 |
Publications (1)
Publication Number | Publication Date |
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WO2014054473A1 true WO2014054473A1 (ja) | 2014-04-10 |
Family
ID=50434801
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2013/075795 WO2014054473A1 (ja) | 2012-10-03 | 2013-09-25 | 密封装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US9080672B2 (ja) |
EP (1) | EP2905518B1 (ja) |
JP (1) | JP5547354B1 (ja) |
CN (2) | CN109357015A (ja) |
WO (1) | WO2014054473A1 (ja) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016047369A1 (ja) * | 2014-09-24 | 2016-03-31 | Nok株式会社 | 密封構造 |
CN105605228B (zh) * | 2016-02-23 | 2018-11-20 | 亿德机电科技(福建)有限公司 | 一种用于燃烧机泵压力可调机械密封件 |
US10487947B2 (en) * | 2016-03-21 | 2019-11-26 | Saint-Gobain Performance Plastics L+S GMBH | Non-symmetrical seal ring |
CN110691930B (zh) * | 2017-06-13 | 2020-08-18 | Nok株式会社 | 密封装置 |
CN107571514A (zh) * | 2017-09-21 | 2018-01-12 | 镇江市胜得机械制造有限责任公司 | 一种密封性好的用于机械底盘的垫圈的制备方法 |
DE102018113967A1 (de) | 2018-06-12 | 2019-12-12 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Dichtschnittstelle für eine Lufttrocknungskartusche und einen Sockel für eine Lufttrocknungskartusche |
TWI690291B (zh) * | 2018-12-27 | 2020-04-11 | 達璞股份有限公司 | 密封栓塞組件 |
CN110093908B (zh) | 2019-06-06 | 2023-12-29 | 衡橡科技股份有限公司 | 一种封隔导管架水泥浆的塔式封隔器 |
CN111734409B (zh) * | 2020-06-28 | 2023-07-07 | 西北大学 | 一种水文地质钻探同径多次抽水装置 |
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JPH08193603A (ja) | 1993-11-05 | 1996-07-30 | Fichtel & Sachs Ag | 揺動形アクチュエータ |
JPH1178851A (ja) | 1997-09-10 | 1999-03-23 | Nabco Ltd | マスタシリンダにおけるシールリングの傾き防止方法 |
JP3403694B2 (ja) | 2000-05-17 | 2003-05-06 | ジャパン・ハムワージ株式会社 | ロータリーベーン式舵取機のリングシール構造 |
JP2004225778A (ja) * | 2003-01-22 | 2004-08-12 | Nok Corp | 密封装置 |
JP2004332920A (ja) * | 2003-04-17 | 2004-11-25 | Nok Corp | 密封構造及び端面シール |
JP2010190314A (ja) * | 2009-02-18 | 2010-09-02 | Nok Corp | 密封装置 |
JP2013194764A (ja) * | 2012-03-16 | 2013-09-30 | Nok Corp | 密封装置及び密封構造 |
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2013
- 2013-09-25 US US14/378,807 patent/US9080672B2/en not_active Expired - Fee Related
- 2013-09-25 CN CN201811085810.6A patent/CN109357015A/zh active Pending
- 2013-09-25 CN CN201380004271.8A patent/CN103998834A/zh active Pending
- 2013-09-25 WO PCT/JP2013/075795 patent/WO2014054473A1/ja active Application Filing
- 2013-09-25 JP JP2014501348A patent/JP5547354B1/ja not_active Expired - Fee Related
- 2013-09-25 EP EP13844271.0A patent/EP2905518B1/en not_active Not-in-force
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JPH08193603A (ja) | 1993-11-05 | 1996-07-30 | Fichtel & Sachs Ag | 揺動形アクチュエータ |
JPH1178851A (ja) | 1997-09-10 | 1999-03-23 | Nabco Ltd | マスタシリンダにおけるシールリングの傾き防止方法 |
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Title |
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See also references of EP2905518A4 |
Also Published As
Publication number | Publication date |
---|---|
CN103998834A (zh) | 2014-08-20 |
EP2905518B1 (en) | 2017-03-15 |
EP2905518A1 (en) | 2015-08-12 |
JPWO2014054473A1 (ja) | 2016-08-25 |
CN109357015A (zh) | 2019-02-19 |
EP2905518A4 (en) | 2015-09-23 |
US9080672B2 (en) | 2015-07-14 |
JP5547354B1 (ja) | 2014-07-09 |
US20150008648A1 (en) | 2015-01-08 |
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