JP2789151B2 - Rotating seal - Google Patents
Rotating sealInfo
- Publication number
- JP2789151B2 JP2789151B2 JP4308285A JP30828592A JP2789151B2 JP 2789151 B2 JP2789151 B2 JP 2789151B2 JP 4308285 A JP4308285 A JP 4308285A JP 30828592 A JP30828592 A JP 30828592A JP 2789151 B2 JP2789151 B2 JP 2789151B2
- Authority
- JP
- Japan
- Prior art keywords
- seal
- storage chamber
- outer peripheral
- fluid storage
- contact
- 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
【０００１】[0001]
【産業上の利用分野】本発明は回転軸に使用されるシー
ルに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seal used for a rotating shaft.
【０００２】[0002]
【従来の技術】従来、図６に示すような回転用シールａ
が、カーエアコンのコンプレッサー等の回転軸部材ｂに
使用されていた。このシールａは、ハウジングｃ内面に
装着され、一対のシールエレメントｄ，ｅの溝付シール
リップ部ｆ，ｇを回転軸部材ｂ外周面に摺接させると共
に、Ｏリングｍをハウジングｃ内面と保持部材ｎに圧接
し、さらに、ゴムガスケットｈをシールエレメントｅと
押え金具ｐの間に介装して、ガス状の冷媒や、冷凍機油
等の流体ｉを密封していた。2. Description of the Related Art Conventionally, a rotary seal a as shown in FIG.
Has been used for a rotating shaft member b such as a compressor of a car air conditioner. The seal a is mounted on the inner surface of the housing c, and the grooved seal lip portions f and g of the pair of seal elements d and e are slidably contacted with the outer peripheral surface of the rotary shaft member b, and the O-ring m is held on the inner surface of the housing c. The member is pressed against the member n, and a rubber gasket h is interposed between the seal element e and the presser fitting p to seal the gaseous refrigerant and the fluid i such as refrigerating machine oil.
【０００３】[0003]
【発明が解決しようとする課題】しかし、シールエレメ
ントｄ，ｅはふっ素系樹脂（ＰＴＦＥ等）製であるた
め、製作時の表面粗さ等のばらつきにより、（回転軸を
回転させたことのない未使用品の）シールａの初使用時
においては、溝付シールリップ部ｆ，ｇの摺接面ｊ，ｋ
による封止が不完全となり、（ある程度回転軸部材ｂを
回転させて上記表面粗さ等のばらつきを無くしてからで
ないと）回転軸部材ｂが静止した状態で、ガス状の流体
漏れが発生する場合があった。However, since the sealing elements d and e are made of fluororesin (PTFE or the like), (the rotating shaft has never been rotated) due to variations in surface roughness and the like during the production. When the seal a (not used) is used for the first time, the sliding contact surfaces j and k of the grooved seal lips f and g are used.
Sealing is incomplete, and gaseous fluid leakage occurs in a state where the rotating shaft member b is stationary (unless the rotating shaft member b is rotated to some extent to eliminate the variation in the surface roughness and the like). There was a case.
【０００４】また、このシールａでは、部品数が多く組
付けに手間がかかりコスト高となる問題点もあった。In addition, the seal a has a problem that the number of parts is large, the assembling is troublesome, and the cost is high.
【０００５】そこで本発明は、回転使用前───未運転
時───においても、確実な密封性を得ることができ、
安価製作可能な回転用シールを提供することを目的とす
る。[0005] Therefore, the present invention can obtain a reliable sealing even before rotation (when not in operation),
An object of the present invention is to provide an inexpensive rotary seal.
【０００６】[0006]
【課題を解決するための手段】本発明は、上記目的を達
成するために、ハウジングと回転軸部材の間に介装され
る回転用シールであって、該回転軸部材の外周面に摺接
する溝付シールリップ部を夫々有する第１シールエレメ
ントと第２シールエレメントを、流体収納室側と低圧側
に順次配設し、該第１シールエレメントよりも流体収納
室側に弾性シール部材をさらに付設して、該シール部材
が、上記ハウジング内面に密接する外周当接片部と、上
記第１シールエレメントの流体収納室側端面に密着する
エレメント圧接片部と、上記回転軸部材の外周面に略線
接触状に摺接するシールリップ部と、を一体化に有して
いる。また、ハウジングと回転軸部材の間に介装される
回転用シールであって、流体収納室側に内鍔部が形成さ
れた環状保持部材を備えると共に、該保持部材の内側
に、上記回転軸部材の外周面に摺接する溝付シールリッ
プ部を夫々有する第１シールエレメントと第２シールエ
レメントを、流体収納室側と低圧側に順次配設し、該第
１シールエレメントよりも流体収納室側に弾性シール部
材をさらに付設して、該シール部材が、上記保持部材の
内鍔部の流体収納室側端面に沿って設けられる連結片部
と、上記保持部材の外周面に沿って設けられると共に上
記ハウジング内面に密接する外周当接片部と、上記内鍔
部の低圧側端面に沿って設けられると共に上記第１シー
ルエレメントの流体収納室側端面に密着するエレメント
圧接片部と、上記回転軸部材の外周面に略線接触状に摺
接するシールリップ部と、を有し、上記連結片部と、外
周当接片部と、エレメント圧接片部と、シールリップ部
と、を一体化して、保持部材に固着したものである。 According to the present invention, there is provided a rotary seal interposed between a housing and a rotary shaft member for achieving the above object, wherein the seal is in sliding contact with the outer peripheral surface of the rotary shaft member. A first seal element and a second seal element each having a grooved seal lip portion are sequentially disposed on the fluid storage chamber side and the low pressure side, and an elastic seal member is further provided on the fluid storage chamber side relative to the first seal element. The seal member has an outer peripheral contact piece that is in close contact with the inner surface of the housing, an element pressure contact piece that is in close contact with the fluid storage chamber side end surface of the first seal element, and an outer peripheral surface of the rotary shaft member. And a seal lip portion that slides in line contact. Also, it is interposed between the housing and the rotating shaft member.
A rotating seal, in which an inner flange is formed on the fluid storage chamber side.
And an inner side of the holding member.
The grooved seal lip slidingly contacting the outer peripheral surface of the rotary shaft member
A first sealing element and a second sealing element each having a
Elements are sequentially arranged on the fluid storage chamber side and the low pressure side.
Elastic sealing part closer to the fluid storage chamber than one sealing element
A material is further attached, and the sealing member is
A connection piece provided along the end face of the inner flange on the side of the fluid storage chamber.
And provided along the outer peripheral surface of the holding member.
An outer peripheral abutting piece that is in close contact with the inner surface of the housing;
Along the low pressure side end face of the
Element that is in close contact with the end face of the fluid element on the fluid storage chamber side
The press contact piece and the outer peripheral surface of the rotary shaft member are slid in substantially line contact.
A contact lip portion, and the connecting piece portion,
Peripheral contact piece, element pressure contact piece, seal lip
Are integrated and fixed to the holding member.
【０００７】[0007]
【作用】シール部材の外周当接片部、エレメント圧接片
部及びシールリップ部が、夫々、ハウジング内面、第１
シールエレメントの流体収納室側端面及び回転軸部材の
外周面に、弾性圧接するので、ガス状の流体であって
も、回転軸部材が静止した状態において完全に密封でき
る。The outer peripheral contact piece, the element pressure contact piece, and the seal lip of the seal member are respectively provided on the inner surface of the housing and the first portion.
Since the seal element is elastically pressed against the end face of the seal element on the side of the fluid storage chamber and the outer peripheral surface of the rotary shaft member, even a gaseous fluid can be completely sealed when the rotary shaft member is stationary.
【０００８】回転軸部材の回転時には、上記シール部材
と、第１・第２シールエレメントの各溝付シールリップ
部との組合わせによって、確実に流体を密封できる。[0008] When the rotary shaft member rotates, the fluid can be reliably sealed by the combination of the seal member and the grooved seal lip portions of the first and second seal elements.
【０００９】また、従来、別個に必要であったＯリング
やゴムガスケット等の部品を、シール部材に集約して一
体化させてあるので、部品点数及び組付け工数の削減を
図ることができる。In addition, since conventionally required components such as an O-ring and a rubber gasket are separately integrated into a seal member, the number of components and the number of assembling steps can be reduced.
【００１０】[0010]
【実施例】以下実施例を示す図面に基づいて本発明を詳
説する。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings showing embodiments.
【００１１】図１と図２は本発明に係る回転用シールを
示しており、例えばカーエアコンのコンプレッサーに使
用される。この回転用シール１は、コンプレッサーのケ
ース等のハウジング２の内面２ａに嵌着されて、ハウジ
ング２と回転軸部材３の間に介装され、所定方向に回転
する回転軸部材３の外周面４に摺接して、流体収納室５
内の液体や気体の流体Ｒを密封する。FIGS. 1 and 2 show a rotary seal according to the present invention, which is used, for example, in a compressor of a car air conditioner. The rotary seal 1 is fitted on an inner surface 2a of a housing 2 such as a compressor case, is interposed between the housing 2 and the rotary shaft member 3, and has an outer peripheral surface 4 of the rotary shaft member 3 rotating in a predetermined direction. To the fluid storage chamber 5
The liquid or gaseous fluid R inside is sealed.
【００１２】６は金属製等の環状保持部材で、保持部材
６には、低圧７側から流体収納室５側に向かって順次、
押え金具８、第２シールエレメント９、中間金具10、第
１シールエレメント11及びゴム製等の弾性シール部材12
が装着される。Reference numeral 6 denotes an annular holding member made of metal or the like. The holding member 6 has a low pressure 7 side and a fluid storage chamber 5 side.
Presser fitting 8, second sealing element 9, intermediate fitting 10, first sealing element 11, and elastic sealing member 12 made of rubber or the like.
Is attached.
【００１３】薄肉円環状である第１・第２シールエレメ
ント11，９は、四ふっ化エチレン樹脂等のふっ素系樹脂
等からなり、回転軸部材３の外周面４に摺接する溝付シ
ールリップ部13，14を夫々有している。The first and second seal elements 11 and 9 having a thin annular shape are made of a fluorine-based resin such as ethylene tetrafluoride resin or the like, and have grooved seal lip portions which are in sliding contact with the outer peripheral surface 4 of the rotary shaft member 3. It has 13 and 14, respectively.
【００１４】このシールリップ部13，14は、第１・第２
シールエレメント11，９の内径側を、低圧７側から流体
収納室５側に折曲げた横断面略Ｌ字型である。The seal lips 13 and 14 are composed of first and second seal lips.
The inner diameter sides of the seal elements 11 and 9 are bent from the low pressure 7 side to the fluid storage chamber 5 side and have a substantially L-shaped cross section.
【００１５】シールリップ部13，14の摺接面15，16の溝
Ｍは、例えば、図４に示すように、第１・第２シールエ
レメント11，９の軸心を中心とする所定回転方向の螺旋
状に等間隔（又は不等間隔）のピッチＰで形成される。For example, as shown in FIG. 4, the grooves M of the sliding contact surfaces 15, 16 of the seal lip portions 13, 14 are formed in a predetermined rotational direction about the axis of the first and second seal elements 11, 9. Are formed at equal pitches (or unequal intervals) in a spiral shape.
【００１６】あるいは、第１・第２シールエレメント1
1，９の内の少なくとも一方の溝Ｍを、図５に示すよう
に、軸心を中心に、等間隔（又は不等間隔）のピッチＰ
で同心円状に複数形成しても良い。また、この独立した
複数の溝Ｍを第１又は第２シールエレメント11，９の軸
心と偏芯させて等間隔（又は不等間隔）のピッチで複数
形成しても良い（図示省略）。Alternatively, the first and second seal elements 1
As shown in FIG. 5, at least one of the grooves M among the grooves 1 and 9 is formed at an equal (or unequal) pitch P around the axis.
May be formed concentrically. Further, a plurality of independent grooves M may be formed at equal pitches (or unequal intervals) so as to be eccentric with the axis of the first or second seal element 11, 9 (not shown).
【００１７】溝Ｍは、図２に示すように、第１・第２シ
ールエレメント11，９の厚みの略半分の深さまで至り、
摺接面15，16に対して傾斜状となっている。As shown in FIG. 2, the groove M reaches a depth of approximately half the thickness of the first and second seal elements 11, 9,
It is inclined with respect to the sliding surfaces 15 and 16.
【００１８】一方、図１と図２に示すように、円環状の
シール部材１２は、シールリップ部１７、エレメント圧
接片部１８、連結片部１９及び外周当接片部２０を一体
に有しており、焼付け等により保持部材６の内鍔部２１
及ひ外周面２２に固着される。換言すれば、連結片部１
９と、外周当接片部２０と、エレメント圧接片部１８
と、シールリップ部１７と、を一体化して、保持部材に
固着する。 On the other hand, as shown in FIGS. 1 and 2, the annular seal member 12 has a seal lip 17, an element pressure contact piece 18, a connecting piece 19, and an outer peripheral contact piece 20 integrally. And the inner flange portion 21 of the holding member 6 is baked or the like.
And is fixed to the outer peripheral surface 22. In other words, the connecting piece 1
9, outer peripheral contact piece 20, element pressure contact piece 18
And the sealing lip 17 are integrated into a holding member.
Stick.
【００１９】シールリップ部17は、例えばゴム製であっ
て、断面形状がくの字形で、その先端部は、内径方向及
び流体収納室５方向へ所定角度で傾斜すると共に、該先
端部には、内径方向に突出して回転軸部材３の外周面４
に略線接触状に摺接する尖鋭状内周突条部23が形成され
る。The seal lip portion 17 is made of rubber, for example, and has a U-shaped cross section. The tip of the seal lip 17 is inclined at a predetermined angle in the inner diameter direction and the fluid storage chamber 5 direction. Outer peripheral surface 4 of rotating shaft member 3 projecting in the inner diameter direction
Is formed with a sharp inner peripheral ridge 23 that slides substantially in line contact.
【００２０】エレメント圧接片部１８は、シールリップ
部１７の基端から、内鍔部２１に沿って外径方向に延伸
し、エレメント圧接片部１８の流体収納室側端４が保持
部材６の内鍔部２１内端面に固着される。つまり、エレ
メント圧接片部１８は、内鍔部２１の低圧７側端面に沿
って設けられる。 The element pressure contact piece 18 extends from the base end of the seal lip 17 in the outer radial direction along the inner flange 21, and the end 4 of the element pressure contact piece 18 on the fluid storage chamber side is formed of the holding member 6. The inner flange 21 is fixed to the inner end face. That is,
Of the inner flange 21 on the low pressure 7 side.
Is provided.
【００２１】エレメント圧接片部18の低圧側端面25に
は、（自由状態において破線の如き形状の）凹凸周部26
が形成され、この低圧側端面25は、第１シールエレメン
ト11の流体収納室側端面27と圧接して密着する。The low pressure side end face 25 of the element pressure contact piece 18 has an uneven peripheral portion 26 (shaped as indicated by a broken line in a free state).
The low pressure side end face 25 is in pressure contact with the fluid storage chamber side end face 27 of the first seal element 11 to be in close contact therewith.
【００２２】外周当接片部２０は、保持部材６の外周面
２２に沿って延伸し、外周当接片部２０の内周面が外周
面２２に固着される。外周当接片部２０の外周面には、
複数の外周突条部２８…が形成され、この外周当接片部
２０の外周面が、ハウジング２の内面２ａに密接する。
つまり、外周当接片部２０は、保持部材６の外周面２２
に沿って設けられる。 The outer peripheral contact piece 20 extends along the outer peripheral surface 22 of the holding member 6, and the inner peripheral surface of the outer peripheral contact piece 20 is fixed to the outer peripheral surface 22. On the outer peripheral surface of the outer peripheral contact piece 20,
A plurality of outer peripheral ridges 28 are formed, and the outer peripheral surface of the outer peripheral contact piece 20 closely contacts the inner surface 2 a of the housing 2.
That is, the outer peripheral contact piece 20 is attached to the outer peripheral surface 22 of the holding member 6.
Is provided along.
【００２３】この外周当接片部２０とシールリップ部１
７とを連結する連結片部１９は、保持部材６の内鍔部２
１に沿って延伸し、連結片部１９の低圧側端面２９が、
内鍔部２１外端面に固着される。つまり、連結片部１９
は、保持部材６の内鍔部２１の流体収納室５側端面に沿
って設けられる。 The outer peripheral contact piece 20 and the seal lip 1
7 is connected to the inner flange 2 of the holding member 6.
1 and the low pressure side end face 29 of the connecting piece 19 is
The inner flange portion 21 is fixed to the outer end surface. That is, the connecting piece 19
Is located along the end face of the inner flange portion 21 of the holding member 6 on the fluid storage chamber 5 side.
Is provided.
【００２４】このように、シールリップ部17の基端部、
エレメント圧接片部18、連結片部19及び外周当接片部20
にて、保持部材６の内鍔部21全体及び外周面22が被覆さ
れると共に、内鍔部21にてシール部材12が補強されてい
る。As described above, the base end of the seal lip 17
Element pressure contact piece 18, connection piece 19 and outer peripheral contact piece 20
Thus, the entire inner flange 21 and the outer peripheral surface 22 of the holding member 6 are covered, and the seal member 12 is reinforced by the inner flange 21.
【００２５】しかして、図１と図３に示すように、第１
・第２シールエレメント11，９においては、その摺接面
15，16が回転軸部材３の外周面４に圧接すると、溝Ｍ
は、その断面形状が鋭角三角形状に拡開し、溝Ｍの底部
が流体収納室５側から低圧７側に傾斜する。Thus, as shown in FIG. 1 and FIG.
・ Sliding contact surfaces of the second seal elements 11 and 9
When the grooves 15 and 16 are pressed against the outer peripheral surface 4 of the rotary shaft member 3, the groove M
Has a cross section that expands into an acute triangular shape, and the bottom of the groove M is inclined from the fluid storage chamber 5 side to the low pressure 7 side.
【００２６】このとき、第１・第２シールエレメント1
1，９の摺接面15，16による回転軸部材３上の接触面圧
は、破線Ｔで示す如く、尖鋭状となり、低圧７側への流
体Ｒの浸入を確実に防止する。At this time, the first and second seal elements 1
The contact surface pressure on the rotating shaft member 3 due to the sliding contact surfaces 15 and 16 of 1 and 9 becomes sharp as shown by a broken line T, thereby reliably preventing the fluid R from entering the low pressure 7 side.
【００２７】また、上記図４に示す螺旋状の溝Ｍとする
ことによって、回転軸部材３が（高速）回転すると、流
体Ｒが溝Ｍに浸入しても、流体Ｒの粘性による連れ廻り
回転流を、低圧７側から流体収納室５方向へ発生させて
押戻し、低圧７側への流体Ｒの漏れを確実に防止でき
る。即ち、いわゆるスクリューによるポンピング作用に
より流体を押戻すことができる。Further, by forming the spiral groove M shown in FIG. 4 above, when the rotating shaft member 3 rotates (at high speed), even if the fluid R enters the groove M, the fluid R rotates in a rotating manner due to the viscosity of the fluid R. The flow is generated from the low pressure 7 side toward the fluid storage chamber 5 and pushed back to reliably prevent leakage of the fluid R to the low pressure 7 side. That is, the fluid can be pushed back by the pumping action of a so-called screw.
【００２８】図１と図２に示すように、シール部材12に
おいては、シールリップ部17の内周突条部23が、回転軸
部材３の外周面４に線接触状に弾性圧接（密接）すると
共に、外周当接片部20の外周面（外周突条部28…）が、
ハウジング２の内面２ａに弾性圧接（密接）して、回転
軸部材３が静止した状態においても、流体収納室５から
低圧７側への流体Ｒ（特に気体）の浸入を確実に防止で
きる。As shown in FIGS. 1 and 2, in the seal member 12, the inner peripheral ridge portion 23 of the seal lip portion 17 is elastically press-contacted (closely contact) with the outer peripheral surface 4 of the rotary shaft member 3 in line contact. At the same time, the outer peripheral surface of the outer peripheral contact piece 20 (the outer peripheral ridge 28...)
The fluid R (especially gas) can be reliably prevented from entering the low pressure 7 from the fluid storage chamber 5 even when the rotary shaft member 3 is in a stationary state by being elastically pressed (close contact) with the inner surface 2 a of the housing 2.
【００２９】さらに、このシールリップ部17を有するた
め、第１シールエレメント11と第２シールエレメント９
の両方に図４に示した螺旋状溝Ｍを形成可能となる。
（つまり静止時の漏れがシールリップ部17にて阻止でき
る。）従って、回転軸部材３の回転状態に於ける密封性
は一層向上することも可能となった。Further, since the seal lip 17 is provided, the first seal element 11 and the second seal element 9 are provided.
In both cases, the spiral groove M shown in FIG. 4 can be formed.
(That is, leakage at rest can be prevented by the seal lip portion 17.) Therefore, the sealing performance in the rotating state of the rotating shaft member 3 can be further improved.
【００３０】さらに、エレメント圧接片部18の低圧側端
面25（凹凸周部26）が第１シールエレメント11の流体収
納室側端面27に弾性圧接（密接）するので、保持部材６
の内面からの流体（特にガス）漏れを防止して、一層確
実に流体Ｒを密封することができる。Further, since the low pressure side end face 25 (irregular peripheral part 26) of the element pressure contact piece 18 is elastically press-contacted (closely contact) with the fluid storage chamber side end face 27 of the first seal element 11, the holding member 6 is formed.
The fluid R (especially gas) can be prevented from leaking from the inner surface of the fluid, and the fluid R can be more securely sealed.
【００３１】そして、回転軸部材３の回転時には、シー
ル部材12の内周突条部23及び第１・第２シールエレメン
ト11，９の摺接面15，16が、回転軸部材３の外周面４に
摺接して、上述の優れた密封作用により、流体収納室５
から低圧７側への流体Ｒの浸入が阻止される。When the rotary shaft member 3 rotates, the inner peripheral ridge 23 of the seal member 12 and the sliding contact surfaces 15 and 16 of the first and second seal elements 11 and 9 form the outer peripheral surface of the rotary shaft member 3. 4 and slides into the fluid storage chamber 5 by the above-described excellent sealing action.
The fluid R is prevented from entering the low pressure 7 from the side.
【００３２】この本発明シールと、従来シールを用い
て、軸静止時における気密性能を比較した試験結果を表
１と表２に示す。Tables 1 and 2 show test results comparing the hermetic performance of the seal of the present invention and the conventional seal when the shaft is stationary.
【００３３】ここで、定圧気密試験結果は、シールを装
着した圧力容器を水没させた状態で、試験圧力（50kgf/
cm2 ）までＮ2 ガスで加圧し、３分間保持した場合にお
ける圧力容器からのガス漏れの有無と、ガス漏れまでの
時間（50kgf/cm2 未満でガス漏れが生じる場合はその圧
力と時間）を示している。Here, the results of the constant-pressure airtightness test are as follows. The test pressure (50 kgf /
cm 2 ) by pressurizing with N 2 gas and holding it for 3 minutes, the presence or absence of gas leakage from the pressure vessel, and the time until gas leakage (if gas leakage occurs below 50 kgf / cm 2 , the pressure and time) Is shown.
【００３４】さらに、急加圧気密試験結果は、大気圧か
ら２〜３秒で試験圧力まで加圧した場合のガス漏れの有
無と、ガス漏れが生じる場合はその圧力を示している。
また、急減圧気密試験結果は、試験圧力から約１秒で大
気圧まで減圧した場合のガス漏れの有無と、ガス漏れが
生じる場合はその圧力を示している。Further, the results of the rapid pressurization test show the presence or absence of gas leakage when the test pressure is increased from the atmospheric pressure to the test pressure in 2 to 3 seconds, and the pressure when gas leakage occurs.
The results of the rapid decompression airtightness test indicate the presence or absence of gas leakage when the pressure is reduced from the test pressure to the atmospheric pressure in about one second, and the pressure when gas leakage occurs.
【００３５】なお、各試料（シール）は、回転軸に全く
摺接させていない未使用品を用い、さらに、この各試料
には冷凍機油を塗布した。As each sample (seal), an unused product which was not slid on the rotating shaft at all was used, and further, each sample was coated with refrigerating machine oil.
【００３６】[0036]
【表１】 [Table 1]
【００３７】[0037]
【表２】 [Table 2]
【００３８】このように、本発明シールでは、何れの気
密試験においても、ガス漏れが全く生じず、従来シール
に比べて、軸静止時の（特に未使用品の使用開始時にお
ける）気密性能に優れていることが明らかとなった。As described above, in the seal of the present invention, no gas leak occurs in any of the airtight tests, and the airtight performance when the shaft is stationary (especially at the start of use of an unused product) is lower than that of the conventional seal. It turned out to be excellent.
【００３９】また、表３の条件にて、本発明シールに対
して、軸回転時の密封性能試験を行った結果を表４に示
す。Table 4 shows the results of a sealing performance test performed on the seal of the present invention at the time of shaft rotation under the conditions shown in Table 3.
【００４０】[0040]
【表３】 [Table 3]
【００４１】[0041]
【表４】 [Table 4]
【００４２】このように、本発明シールでは、高速（64
00rpm ），高圧（18kgf/cm2 ）の厳しい条件下において
も、確実に流体（油）漏れ及び圧力降下を防止でき、優
れた密封性能を発揮することがわかる。As described above, in the seal of the present invention, high speed (64
It can be seen that fluid (oil) leakage and pressure drop can be reliably prevented even under severe conditions of high pressure (18 rpm / 18 kgf / cm 2 ) and excellent sealing performance is exhibited.
【００４３】[0043]
【発明の効果】本発明は上述の如く構成されているの
で、次に記載するような著大な効果を奏する。Since the present invention is configured as described above, the following significant effects can be obtained.
【００４４】本発明のシールは、特に、高圧コンプレッ
サー用に好適で、回転軸部材３が静止した状態における
気密性能に優れており、流体密封性能の安定化を図るこ
とができる。特に、回転使用前の状態での流体漏れを防
止できる。The seal of the present invention is particularly suitable for a high-pressure compressor, has excellent airtightness when the rotating shaft member 3 is stationary, and can stabilize the fluid sealing performance. In particular, it is possible to prevent fluid leakage before rotation.
【００４５】シール部材12を併用してあるので、第１・
第２シールエレメント11，９の両方の溝Ｍ，Ｍを、螺旋
状にすることが可能となり、回転軸部材３の回転時に両
シールエレメント11，９のポンピング作用を生かして、
密封性能を一層向上すると共に安定させることが、可能
となった。Since the sealing member 12 is used together, the first
Both the grooves M, M of the second seal elements 11, 9 can be formed in a spiral shape, and by utilizing the pumping action of both seal elements 11, 9 when the rotary shaft member 3 rotates,
It has become possible to further improve and stabilize the sealing performance.
【００４６】従来、別個に必要であったＯリングやゴム
ガスケット等の部品を、シール部材12に集約して一体化
してあるので、部品点数及び組付け工数の削減を図るこ
とができ、安価製作が可能となる。Parts such as an O-ring and a rubber gasket, which were conventionally required separately, are integrated into the seal member 12 and integrated, so that the number of parts and the number of assembling steps can be reduced, and the manufacturing cost can be reduced. Becomes possible.
【図１】本発明の一実施例を示す拡大断面図である。FIG. 1 is an enlarged sectional view showing one embodiment of the present invention.
【図２】回転用シールの拡大断面図である。FIG. 2 is an enlarged sectional view of a rotary seal.
【図３】第１・第２シールエレメントの作用説明図であ
る。FIG. 3 is an explanatory diagram of an operation of first and second seal elements.
【図４】溝を螺旋状に形成した場合のシールエレメント
の展開図である。FIG. 4 is an exploded view of the seal element when the groove is formed in a spiral shape.
【図５】溝を同心円状に形成した場合のシールエレメン
トの展開図である。FIG. 5 is a development view of the seal element when the grooves are formed concentrically.
【図６】従来例を示す断面図である。FIG. 6 is a sectional view showing a conventional example.
２ ハウジング ２ａ 内面 ３ 回転軸部材 ４ 外周面 ５ 流体収納室 ７ 低圧 ９ 第２シールエレメント 11 第１シールエレメント 12 シール部材 13 溝付シールリップ部 14 溝付シールリップ部 17 シールリップ部 18 エレメント圧接片部 20 外周当接片部 27 流体収納室側端面 2 Housing 2a Inner surface 3 Rotary shaft member 4 Outer peripheral surface 5 Fluid storage chamber 7 Low pressure 9 Second seal element 11 First seal element 12 Seal member 13 Seal lip with groove 14 Seal lip with groove 17 Seal lip 18 Element pressure contact piece Part 20 Outer peripheral contact piece 27 Fluid storage chamber side end face
フロントページの続き (56)参考文献 特開 昭63−312569（ＪＰ，Ａ) 特開 平４−157264（ＪＰ，Ａ) (58)調査した分野(Int.Cl.6，ＤＢ名) F16J 15/32 311Continuation of the front page (56) References JP-A-63-312569 (JP, A) JP-A-4-157264 (JP, A) (58) Fields investigated (Int. Cl. 6 , DB name) F16J 15 / 32 311
Claims (2)
る回転用シールであって、該回転軸部材の外周面に摺接
する溝付シールリップ部を夫々有する第１シールエレメ
ントと第２シールエレメントを、流体収納室側と低圧側
に順次配設し、該第１シールエレメントよりも流体収納
室側に弾性シール部材をさらに付設して、該シール部材
が、上記ハウジング内面に密接する外周当接片部と、上
記第１シールエレメントの流体収納室側端面に密着する
エレメント圧接片部と、上記回転軸部材の外周面に略線
接触状に摺接するシールリップ部と、を一体化に有して
いることを特徴とする回転用シール。1. A first seal element and a second seal each having a grooved seal lip slidingly in contact with an outer peripheral surface of a rotary shaft member interposed between a housing and a rotary shaft member. The elements are sequentially disposed on the fluid storage chamber side and the low pressure side, and an elastic seal member is further provided on the fluid storage chamber side with respect to the first seal element, so that the seal member comes into close contact with the inner surface of the housing. A contact piece, an element pressure contact piece that is in close contact with the end face of the first seal element on the side of the fluid storage chamber, and a seal lip that comes into sliding contact with the outer peripheral surface of the rotary shaft member in a substantially linear manner are integrally provided. A rotating seal characterized by the following.
る回転用シールであって、流体収納室側に内鍔部が形成Rotary seal with an inner flange formed on the fluid storage chamber side
された環状保持部材を備えると共に、該保持部材の内側Provided with an annular holding member, and inside the holding member.
に、上記回転軸部材の外周面に摺接する溝付シールリッThe grooved seal lip slidingly contacting the outer peripheral surface of the rotary shaft member
プ部を夫々有する第１シールエレメントと第２シールエA first sealing element and a second sealing element each having a
レメントを、流体収納室側と低圧側に順次配設し、該第Elements are sequentially arranged on the fluid storage chamber side and the low pressure side.
１シールエレメントよりも流体収納室側に弾性シール部Elastic sealing part closer to the fluid storage chamber than one sealing element
材をさらに付設して、該シール部材が、上記保持部材のA material is further attached, and the sealing member is
内鍔部の流体収納室側端面に沿って設けられる連結片部A connection piece provided along the end face of the inner flange on the side of the fluid storage chamber.
と、上記保持部材の外周面に沿って設けられると共に上And provided along the outer peripheral surface of the holding member.
記ハウジング内面に密接する外周当接片部と、上記内鍔An outer peripheral abutting piece that is in close contact with the inner surface of the housing;
部の低圧側端面に沿って設けられると共に上記第１シーAlong the low pressure side end face of the
ルエレメントの流体収納室側端面に密着するエレメントElement that is in close contact with the end face of the fluid element on the fluid storage chamber side
圧接片部と、上記回転軸部材の外周面に略線接触状に摺The press contact piece and the outer peripheral surface of the rotary shaft member are slid in substantially line contact.
接するシールリップ部と、を有し、上記連結片部と、外A contact lip portion, and the connecting piece portion,
周当接片部と、エレメント圧接片部と、シールリップ部Peripheral contact piece, element pressure contact piece, seal lip
と、を一体化して、保持部材に固着したことを特徴とすAnd are integrated and fixed to the holding member.
る回転用シール。Rotating seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4308285A JP2789151B2 (en) | 1992-10-21 | 1992-10-21 | Rotating seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4308285A JP2789151B2 (en) | 1992-10-21 | 1992-10-21 | Rotating seal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06129546A JPH06129546A (en) | 1994-05-10 |
| JP2789151B2 true JP2789151B2 (en) | 1998-08-20 |
Family
ID=17979196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4308285A Expired - Lifetime JP2789151B2 (en) | 1992-10-21 | 1992-10-21 | Rotating seal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2789151B2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5562406A (en) * | 1995-01-11 | 1996-10-08 | Ansimag Inc. | Seal assembly for fluid pumps and method for detecting leaks in fluid pumps or fluid containment devices |
| US6367811B1 (en) | 1998-11-24 | 2002-04-09 | Mitsubishi Cable Industries, Ltd. | Rotation shaft seal |
| JP4648514B2 (en) * | 2000-05-02 | 2011-03-09 | イーグル工業株式会社 | Lip type seal |
| US6705617B2 (en) | 2001-11-28 | 2004-03-16 | Federal-Mogul World Wide, Inc. | Hydrodynamic seal and method of making the same |
| US8925927B2 (en) * | 2006-02-10 | 2015-01-06 | Freudenberg-Nok General Partnership | Seal with controllable pump rate |
| JP4822897B2 (en) * | 2006-03-28 | 2011-11-24 | 三菱電線工業株式会社 | Rotating shaft seal |
| JP5985288B2 (en) * | 2012-07-25 | 2016-09-06 | 三菱電線工業株式会社 | Rotating shaft seal |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63312569A (en) * | 1987-06-15 | 1988-12-21 | Nippon Pillar Packing Co Ltd | Oil seal |
| JP3068170B2 (en) * | 1990-10-19 | 2000-07-24 | 三菱電線工業株式会社 | Oil seal |
-
1992
- 1992-10-21 JP JP4308285A patent/JP2789151B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06129546A (en) | 1994-05-10 |
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