JPH09210215A - Sealing device of water pump - Google Patents
Sealing device of water pumpInfo
- Publication number
- JPH09210215A JPH09210215A JP8044239A JP4423996A JPH09210215A JP H09210215 A JPH09210215 A JP H09210215A JP 8044239 A JP8044239 A JP 8044239A JP 4423996 A JP4423996 A JP 4423996A JP H09210215 A JPH09210215 A JP H09210215A
- Authority
- JP
- Japan
- Prior art keywords
- water pump
- seal member
- sealing device
- seal
- inner diameter
- 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.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 81
- 238000007789 sealing Methods 0.000 title claims abstract description 33
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 19
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 19
- 229920005989 resin Polymers 0.000 claims abstract description 17
- 239000011347 resin Substances 0.000 claims abstract description 17
- 239000002184 metal Substances 0.000 claims description 18
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 11
- 239000010439 graphite Substances 0.000 claims description 9
- 229910002804 graphite Inorganic materials 0.000 claims description 9
- -1 polytetrafluoroethylene Polymers 0.000 claims description 9
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 7
- 239000004917 carbon fiber Substances 0.000 claims description 7
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 7
- 229920003002 synthetic resin Polymers 0.000 claims description 5
- 239000000057 synthetic resin Substances 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 4
- 229910052742 iron Inorganic materials 0.000 abstract 2
- 238000000034 method Methods 0.000 description 6
- 239000000498 cooling water Substances 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Sealing With Elastic Sealing Lips (AREA)
- Sealing Of Bearings (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、自動車用のウォ
−タポンプの密封装置、特に長期間の防水効果に優れ且
つ組立作業も容易なウォ−タポンプの密封装置に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water pump sealing device for an automobile, and more particularly to a water pump sealing device which has a long-term waterproof effect and is easy to assemble.
【０００２】[0002]
【従来の技術】自動車のエンジンを冷却するウォ−タポ
ンプは、ウォ−タポンプ軸の端部に装着したインペラを
ウォ−タポンプ室内で回転させ、冷却水をエンジンのウ
ォ−タジャケット内で循環させるようになっている。こ
のようなウォ−タポンプの軸受装置では、軸受部とウォ
−タポンプ室とは隣接しているため密封装置により該軸
受部側に水が侵入すること及び軸受シ−ル部等を通じて
水が外部に漏出することをほぼ完全に防止しなければな
らない。従来のウォ−タポンプの密封装置は、例えば図
４に示すように、ハウジング２内においてウォ−タポン
プ軸１を支持するウォ−タポンプ用軸受３と冷却水を満
たしたウォ−タポンプ室４との間に設けられる。即ち、
この密封装置は、前記ウォ−タポンプ用軸受３部分を軸
受シ−ル１２で密封し、更に該ウォ−タポンプ用軸受３
外側の軸受室１３とウォ−タポンプ室４との間をシ−ル
ケ−ス１４で仕切り、該シ−ルケ−ス１４にカ−ボンを
含むシ−ル部材１５を支持させ、そして該シ−ル部材１
５を前記インペラ５ボス部に一体に固定した密封環体１
６の端面にばね１７の付勢力によって摺接させたメカニ
カルシ−ル構造としてある。2. Description of the Related Art A water pump for cooling an engine of an automobile is configured such that an impeller mounted on an end of a shaft of a water pump is rotated in a water pump chamber and cooling water is circulated in a water jacket of the engine. It has become. In such a water pump bearing device, since the bearing portion and the water pump chamber are adjacent to each other, water enters the bearing portion side by the sealing device, and the water flows to the outside through the bearing seal portion and the like. Leakage should be almost completely prevented. As shown in FIG. 4, for example, a conventional water pump sealing device is provided between a water pump bearing 3 for supporting a water pump shaft 1 in a housing 2 and a water pump chamber 4 filled with cooling water. It is provided in. That is,
This sealing device seals the bearing 3 part for the water pump with a bearing seal 12, and further the bearing 3 for the water pump.
A partition between the outer bearing chamber 13 and the water pump chamber 4 is partitioned by a seal case 14, the seal case 14 is made to support a seal member 15 containing carbon, and the seal case 14 is supported. Member 1
Sealing ring body 1 in which 5 is integrally fixed to the boss portion of the impeller 5
The mechanical seal structure is slidably contacted with the end face of 6 by the urging force of the spring 17.
【０００３】[0003]
【発明が解決しようとする課題】ウォ−タポンプの密封
装置における摺動部からの水漏れによるウォ−タポンプ
用軸受の破損或いは摺動部におけるいわゆる鳴き音の発
生等のトラブルは、自動車のウォ−タポンプ市場におけ
るメカニカルシ−ルの長年の課題である。メカニカルシ
−ルの摺動部からの水漏れの原因の一つとして、上記す
るようにメカニカルシ−ルの密封材（シ−ル部材１５）
がカ−ボン（或いはセラミック）を含むシ−ル部材であ
るため冷却水中に固い異物が存在すると摺動面を傷つけ
ることが考えられる。また、密封装置は構造が比較的複
雑で部品点数も多いため組立作業も煩雑となるという問
題がある。Problems such as breakage of the bearing for the water pump or generation of so-called squeal noise in the sliding part due to water leakage from the sliding part in the sealing device of the water pump are caused by the water of the automobile. It has been a long-standing challenge for mechanical seals in the tap pump market. As one of the causes of water leakage from the sliding portion of the mechanical seal, as described above, the mechanical seal material (sealing member 15) is used.
Is a seal member containing carbon (or ceramic), it is conceivable that the presence of hard foreign matter in the cooling water may damage the sliding surface. Further, since the sealing device has a relatively complicated structure and has a large number of parts, there is a problem that the assembling work becomes complicated.
【０００４】この発明は上記する課題に着目してなされ
たものであり、摺動部からの鳴き音の発生を防止し且つ
冷却水中に異物が存在しても長期にわたって水漏れが生
じる恐れがなく、組立作業も容易なウォ−タポンプの密
封装置を提供することを目的とする。The present invention has been made by paying attention to the above-mentioned problems, and prevents the generation of squeaking noises from the sliding portion and eliminates the possibility of water leakage for a long time even if foreign matter is present in the cooling water. Another object of the present invention is to provide a water pump sealing device which is easy to assemble.
【０００５】[0005]
【課題を解決するための手段】即ち、この発明は上記す
る課題を解決するために、ウォ−タポンプの密封装
が、芯金の外回りにゴムを固着させて形成した第１シ−
ル部材と、該第１シ−ル部材の芯金内径側に嵌め入れウ
ォ−タポンプ軸に嵌合させたとき内径側が該ウォ−タポ
ンプ軸表面でウォ−タポンプ室側へ弾性変形して該ウォ
−タポンプ軸表面に摺接する合成樹脂製の第２シ−ル部
材と、前記第２シ−ル部材を第１シ−ル部材間に挟持す
るように前記第１シ−ル部材の芯金内径側に嵌め入れら
れるリング状の剛性部材と、内径部に前記ウォ−タポン
プ軸表面に摺接するリップ部を形成したゴムを軸方向に
延ばして形成した芯金の外回りに沿って固着させ、且つ
前記第１シ−ル部材の芯金内周面に前記剛性部材を第２
シ−ル部材間に挟持するように圧入される第３シ−ル部
材と、で構成したウォ−タポンプの密封装置であって、
前記第２シ−ル部材の合成樹脂をポリテトラフルオロエ
チレンとし、前記リング状の剛性部材を金属とし、且つ
前記第３シ−ル部材の芯金端部をウォ−タポンプ用軸受
の外輪に装着させてなることを特徴とする。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a first seal formed by sealing a rubber of a water pump around a core metal.
And the core metal of the first seal member are fitted on the inner diameter side of the core metal and fitted to the water pump shaft, the inner diameter side is elastically deformed to the water pump chamber side on the surface of the water pump shaft, and the wall -A second seal member made of synthetic resin which is in sliding contact with the surface of the pump shaft, and a core metal inner diameter of the first seal member so as to sandwich the second seal member between the first seal member and the second seal member. A ring-shaped rigid member fitted to the side, and a rubber having an inner diameter portion having a lip portion slidingly contacting the surface of the water pump shaft fixed in the axial direction along the outer circumference of the cored bar, and The second rigid member is provided on the inner peripheral surface of the core metal of the first seal member.
A sealing device for a water pump, comprising: a third seal member press-fitted so as to be sandwiched between the seal members;
The synthetic resin of the second seal member is polytetrafluoroethylene, the ring-shaped rigid member is metal, and the end of the core of the third seal member is attached to the outer ring of the water pump bearing. It is characterized by being done.
【０００６】或いは、の手段の前記第３シ−ル部材
の該リップ部に、前記ウォ−タポンプ軸表面に摺接する
ポリテトラフルオロエチレン樹脂製の摺接部材を設けた
ことを特徴とする。Alternatively, a sliding contact member made of polytetrafluoroethylene resin which is in sliding contact with the surface of the water pump shaft is provided at the lip portion of the third seal member.
【０００７】或いは、若しくはの手段における前
記第３シ−ル部材のリップ部に設けたポリテトラフルオ
ロエチレン樹脂製の前記摺動部材の少なくとも一つに、
カ−ボン繊維と黒鉛が配合されてなることを特徴とす
る。Alternatively, at least one of the sliding members made of polytetrafluoroethylene resin provided on the lip portion of the third seal member in the above means,
It is characterized in that carbon fiber and graphite are blended.
【０００８】或いは、前記の集団におけるカ−ボン
繊維が２０重量％以下であり、且つ黒鉛が５重量％以下
であることを特徴とする。Alternatively, the carbon fiber in the above-mentioned group is less than 20% by weight and the graphite is less than 5% by weight.
【０００９】[0009]
【発明の実施の形態】以下、この発明の具体的実施例に
ついて図面を参照して説明する。図１はこの発明のウォ
−タポンプの密封装置を備えたウォ−タポンプの一部断
面図であり、図２はウォ−タポンプの密封装置の一部拡
大図である。ウォ−タポンプ軸１はウォ−タポンプ用軸
受３を介してハウジング２に支持される。該ウォ−タポ
ンプ軸１の端部にはウォ−タポンプ室４内で回転するイ
ンペラ５が装着されている。前記ウォ−タポンプ用軸受
３とウォ−タポンプ室４との間には密封装置６が配置さ
れている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a partial cross-sectional view of a water pump provided with a water pump sealing device of the present invention, and FIG. 2 is a partially enlarged view of the water pump sealing device. The water pump shaft 1 is supported by the housing 2 via a water pump bearing 3. An impeller 5 that rotates in a water pump chamber 4 is mounted on the end portion of the water pump shaft 1. A sealing device 6 is arranged between the water pump bearing 3 and the water pump chamber 4.
【００１０】前記密封装置６は、図２に示すように、Ｌ
字形の芯金７ａとゴム部材７ｂで形成した第１シ−ル部
材７と、前記ウォ−タポンプ軸１に嵌合摺接させたとき
内径側が該ウォ−タポンプ軸１表面で外側（ウォ−タポ
ンプ室側）へ弾性変形して該ウォ−タポンプ用軸受表面
に密着する合成樹脂、例えばポリテトラフルオロエチレ
ン樹脂（以下、ＰＴＦＥ樹脂とする）製の第２シ−ル部
材８と、前記第１シ−ル部材７のＬ字形の芯金７ａ内周
面に圧入する或いは僅かな隙間をもって嵌合するリング
状の剛性部材９と、軸方向に延ばした芯金１０ａの回り
に固着され前記ウォ−タポンプ軸１表面に接するリップ
部１０ｂ1 を形成したゴム部材１０ｂを固着し、且つ前
記第１シ−ル部材７の芯金７ａの内周面に圧入された第
３シ−ル部材１０と、で構成されている。前記リップ部
１０ｂ1 の外回りにはガ−タスプリング１１が嵌め込ま
れ該リップ部１０ｂ1 をウォ−タポンプ軸１表面に押し
付けるようにしてある。また、前記第３シ−ル部材１０
を構成するゴム部材１０ｂのリップ部１０ｂ1には前記
ウォ−タポンプ軸１と摺接する例えばＰＴＦＥ樹脂製の
摺接部材１０ｃが貼着してある。The sealing device 6, as shown in FIG.
When the first seal member 7 formed of a V-shaped core metal 7a and a rubber member 7b and the water pump shaft 1 are fitted and slidably contacted with each other, the inner diameter side is the outer side on the surface of the water pump shaft 1 (water pump). The second seal member 8 made of a synthetic resin, for example, polytetrafluoroethylene resin (hereinafter referred to as PTFE resin), which elastically deforms to the chamber side) and adheres closely to the surface of the bearing for the water pump, and the first seal. A ring-shaped rigid member 9 press-fitted into the L-shaped cored bar 7a of the ring member 7 or fitted with a slight gap, and a cored bar 10a extending in the axial direction, and fixed to the water pump. fixing a rubber member 10b formed with a lip portion 10b 1 in contact with the shaft 1 surface, and the first sheet - third sheet is press-fitted to the inner peripheral surface of the metal core 7a of seal member 7 - in the seal member 10, It is configured. Wherein the outer loop of the lip portion 10b 1 moth - motor spring 11 is fitted into the lip portion 10b 1 Wo - are as pressed against the Taponpu shaft 1 surface. In addition, the third seal member 10
The The lip 10b 1 of the rubber member 10b constituting the Wo - Taponpu shaft 1 and the sliding contact such as PTFE resin sliding member 10c are are stuck.
【００１１】前記第１シ−ル部材７は、鋼板等のＬ字形
の芯金７ａにゴム部材７ｂを焼付固定して製作する。Ｐ
ＴＦＥで製作した前記第２シ−ル部材８は、ＰＴＦＥの
化学的安定性によるＬＬＣ（Ｌｏｎｇ Ｌｉｆｅ Ｃｏ
ｏｌａｎｔ）及び一定水圧下での耐摩耗性を備えている
点に着目してこれらの性質を利用するものである。ま
た、前記リング状の剛性部材９は、前記第２シ−ル部材
８に圧力がかかった時該第２シ−ル部材８が変形するの
を防止するバックアップリングとしての機能を有するも
のであり鋼板等の金属の他セラミック或いは剛性の大き
な樹脂を使用してもよい。前記第３シ−ル部材１０のリ
ップ部１０ｂ1 に貼着したＰＴＦＥ樹脂製の摺接部材１
０ｃはＰＴＦＥによりリップ部１０ｂ1 と一体に形成し
てもよい。また、該第３シ−ル部材１０の軸方向に延設
した芯金１０ａの端部回りのゴム部材１０ｂ2 は、前記
ウォ−タポンプ用軸受３の外輪３１内周面に設けた溝３
１ａに嵌合させるように若干厚みを持たせて固着してあ
る。The first seal member 7 is manufactured by fixing a rubber member 7b to an L-shaped core metal 7a such as a steel plate by baking. P
The second seal member 8 made of TFE is formed of LLC (Long Life Co) due to the chemical stability of PTFE.
These properties are utilized by paying attention to the fact that it has an abrasion resistance under a constant water pressure. Further, the ring-shaped rigid member 9 has a function as a backup ring that prevents the second seal member 8 from being deformed when pressure is applied to the second seal member 8. In addition to metal such as steel plate, ceramic or resin having high rigidity may be used. Said third sheet - sliding member made of PTFE resin adhered to the lip 10b 1 of the seal member 10 1
0c may be formed integrally with the lip portion 10b 1 by using PTFE. Further, the third sheet - end around the rubber member 10b of the core metal 10a that extends in the axial direction of the seal member 10 2, the Wo - groove 3 provided 31 inner circumferential surface the outer ring of the Taponpu bearing 3
It is affixed with a slight thickness so that it can be fitted to 1a.
【００１２】次に、前記第２シ−ル部材８とシ−ル部材
１０のＰＴＦＥ製摺接部材１０ｃの少なくとも一つには
充填剤としてカ−ボン繊維及び黒鉛を配合する。この場
合、配合するカ−ボン繊維及び黒鉛は、それぞれ２０重
量％或いはこれ以下，５重量％或いはこれ以下が良い。
水潤滑条件下では特にカ−ボン繊維は圧力の低下がなく
前記量程度が最適であり、これ以上混合するとシ−ル部
材として硬く脆くなりシ−ル性能は悪くなる。また、黒
鉛は低潤滑時の固体潤滑剤として有効であるが、５重量
％以上に配合量を増やすと硬く脆くなりシ−ル性能は悪
くなる。Next, carbon fiber and graphite are blended as a filler into at least one of the PTFE sliding contact members 10c of the second seal member 8 and the seal member 10. In this case, the carbon fiber and graphite to be blended are preferably 20% by weight or less and 5% by weight or less, respectively.
Under water-lubricated conditions, the carbon fiber does not have a drop in pressure, and the above amount is optimal, and if it is mixed more than that, it becomes hard and brittle as a seal member and the seal performance deteriorates. Further, graphite is effective as a solid lubricant at the time of low lubrication, but if the compounding amount is increased to 5% by weight or more, it becomes hard and brittle and the sealing performance becomes poor.
【００１３】上記構成からなるウォ−タポンプの密封装
置６は、図３に示すように、第１シ−ル部材７の芯金７
ａ内径側にＰＴＦＥ樹脂製の第２シ−ル部材８を嵌め入
れ、次に剛性部材９を該芯金７ａ内径側に嵌入して該Ｐ
ＴＦＥ樹脂製の第２シ−ル部材８を挟持させ、次いでＰ
ＴＦＥ樹脂製周設部材１０ｃを貼着した第３シ−ル部材
１０を、前記第１シ−ル部材７の芯金７ａ内径側に圧入
して組み立てユニット化（ＡＳＳＥＭＢＬＹ）する。こ
のようにして予めユニット化したウォ−タポンプの密封
装置６は、ウォ−タポンプの組立時前記軸受３の外輪３
１の溝３１ａに嵌め入れるだけで固定することができる
ため組付工数を削減するだけでなく組立作業も極めて容
易となる。As shown in FIG. 3, the sealing device 6 for a water pump having the above-described structure is provided with a metal core 7 of a first seal member 7.
a second seal member 8 made of PTFE resin is fitted on the inner diameter side, and then a rigid member 9 is fitted on the inner diameter side of the core metal 7a.
The second seal member 8 made of TFE resin is clamped, and then P
The third seal member 10 to which the TFE resin surrounding member 10c is attached is press-fitted into the core metal 7a inner diameter side of the first seal member 7 to form an assembly unit (ASSEMBLY). In this way, the water pump sealing device 6 unitized in advance is used as the outer ring 3 of the bearing 3 when the water pump is assembled.
Since it can be fixed only by fitting it into the first groove 31a, not only the number of assembling steps can be reduced, but also the assembling work becomes extremely easy.
【００１４】[0014]
【発明の効果】以上詳述したように、この発明のウォ−
タポンプの密封装置によれば、シ−ル部材同士を摺動さ
せることがないため冷却水中に異物が混入していても漏
水を防止することができる。また、ウォ−タポンプ軸と
接触する複数のシ−ル部材にはＰＴＦＥという化学的に
も物理的にも安定した樹脂を用いているため追従性がよ
く信頼性も高いウォ−タポンプの密封構造とすることが
できる。更に、このウォ−タポンプの密封装置は、予め
ユニット化してから軸受外輪に取り付けるため組立作業
が極めて容易となる。As described above in detail, the warp of the present invention is described.
According to the sealing device of the water pump, since the seal members do not slide with each other, water leakage can be prevented even if foreign matter is mixed in the cooling water. In addition, since a plurality of seal members that come into contact with the water pump shaft are made of PTFE, which is a chemically and physically stable resin, a sealed structure of the water pump with high followability and high reliability is provided. can do. Further, the sealing device for the water pump is unitized in advance and then mounted on the outer ring of the bearing, which makes the assembly work extremely easy.
【図１】この発明のウォ−タポンプの密封装置を備えた
ウォ−タポンプの一部断面図である。FIG. 1 is a partial sectional view of a water pump provided with a water pump sealing device of the present invention.
【図２】この発明のウォ−タポンプの密封装置の一部拡
大図である。FIG. 2 is a partially enlarged view of the water pump sealing device of the present invention.
【図３】この発明のウォ−タポンプの密封装置を組み立
てる手順を示す分解図である。FIG. 3 is an exploded view showing a procedure for assembling the water pump sealing device of the present invention.
【図４】従来の密封装置を備えたウォ−タポンプの一部
断面図である。FIG. 4 is a partial cross-sectional view of a water pump including a conventional sealing device.
１ ウォ−タポンプ軸 ２ ハウジング ３ ウォ−タポンプ用軸受 ４ ウォ−タポンプ室 ５ インペラ ６ 密封装置 ７ 第１シ−ル部材 ７ａ 芯金 ７ｂ ゴム部材 ８ ＰＴＦＥ樹脂製の第２シ−ル部材 ９ 剛性部材 １０ 第３シ−ル部材 １０ａ 芯金 １０ｂ ゴム部材 １０ｃ ＰＴＦＥ樹脂製摺接部材 1 Water Pump Shaft 2 Housing 3 Water Pump Bearing 4 Water Pump Chamber 5 Impeller 6 Sealing Device 7 First Seal Member 7a Core Bar 7b Rubber Member 8 Second Seal Member 9 Made of PTFE Resin 9 Rigid Member 10 Third Seal Member 10a Core Bar 10b Rubber Member 10c PTFE Resin Sliding Contact Member
─────────────────────────────────────────────────────
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【手続補正書】[Procedure amendment]
【提出日】平成８年３月２５日[Submission date] March 25, 1996
【手続補正１】[Procedure amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】請求項３[Correction target item name] Claim 3
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【手続補正２】[Procedure amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００７[Correction target item name] 0007
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【０００７】 或いは、若しくはの手段における
前記第２シ−ル部材、若しくは前記第３シ−ル部材のリ
ップ部に設けたポリテトラフルオロエチレン樹脂製の前
記摺動部材の少なくとも一つに、カ−ボン繊維と黒鉛が
配合されたことを特徴とする。Alternatively, in at least one of the sliding members made of polytetrafluoroethylene resin provided on the lip portion of the second seal member or the third seal member in the means, It is characterized in that Bonn fiber and graphite were blended.
Claims (4)
た第１シ−ル部材と、該第１シ−ル部材の芯金内径側に
嵌め入れウォ−タポンプ軸に嵌合させたとき内径側が該
ウォ−タポンプ軸表面でウォ−タポンプ室側へ弾性変形
して該ウォ−タポンプ軸表面に摺接する合成樹脂製の第
２シ−ル部材と、前記第２シ−ル部材を第１シ−ル部材
間に挟持するように前記第１シ−ル部材の芯金内径側に
嵌め入れられるリング状の剛性部材と、内径部に前記ウ
ォ−タポンプ軸表面に摺接するリップ部を形成したゴム
を軸方向に延ばして形成した芯金の外回りに沿って固着
させ、且つ前記第１シ−ル部材の芯金内周面に前記剛性
部材を第２シ−ル部材間に挟持するように圧入される第
３シ−ル部材と、で構成したウォ−タポンプの密封装置
であって、 前記第２シ−ル部材の合成樹脂をポリテトラフルオロエ
チレンとし、前記リング状の剛性部材を金属とし、且つ
前記第３シ−ル部材の芯金端部をウォ−タポンプ用軸受
の外輪に装着させてなることを特徴とするウォ−タポン
プの密封装置。1. A first seal member formed by fixing rubber to the outer periphery of a core metal, and a first seal member fitted to the inner diameter side of the core metal and fitted to a water pump shaft. A second seal member made of a synthetic resin, which has an inner diameter side elastically deformed toward the water pump chamber side on the surface of the water pump shaft and slidably contacts the surface of the water pump shaft, and the second seal member are the first A ring-shaped rigid member fitted into the core metal inner diameter side of the first seal member so as to be sandwiched between the seal members, and a lip portion slidably contacting the water pump shaft surface are formed in the inner diameter portion. A rubber is fixed along the outer circumference of a cored bar formed by extending in the axial direction, and the rigid member is sandwiched between the second seal members on the inner peripheral surface of the cored bar of the first seal member. A sealing device for a water pump, comprising: a third seal member press-fitted; The synthetic resin of the seal member is polytetrafluoroethylene, the ring-shaped rigid member is metal, and the end of the core of the third seal member is attached to the outer ring of the water pump bearing. A water pump sealing device.
ウォ−タポンプ軸表面に摺接するポリテトラフルオロエ
チレン樹脂製の摺接部材を設けたことを特徴とする請求
項１に記載のウォ−タポンプの密封装置。2. The sliding contact member made of polytetrafluoroethylene resin, which is in sliding contact with the surface of the water pump shaft, is provided at the lip portion of the third seal member. Water pump sealing device.
シ−ル部材、若しくは前記第３シ−ル部材のリップ部に
設けたポリテトラフルオロエチレン樹脂製摺動部材の少
なくとも一つに、カ−ボン繊維と黒鉛が配合されてなる
請求項１若しくは請求項２に記載のウォ−タポンプの密
封装置。3. The second seal member or the third seal member
The carbon fiber and graphite are blended with at least one of a seal member or a polytetrafluoroethylene resin sliding member provided at a lip portion of the third seal member. Item 3. A water pump sealing device according to item 2.
且つ黒鉛が５重量％以下である請求項３に記載のウォ−
タポンプの密封装置。4. Carbon fiber is 20% by weight or less,
The graphite according to claim 3, wherein the graphite content is 5% by weight or less.
Tappu sealing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8044239A JPH09210215A (en) | 1996-02-05 | 1996-02-05 | Sealing device of water pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8044239A JPH09210215A (en) | 1996-02-05 | 1996-02-05 | Sealing device of water pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09210215A true JPH09210215A (en) | 1997-08-12 |
Family
ID=12685990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8044239A Pending JPH09210215A (en) | 1996-02-05 | 1996-02-05 | Sealing device of water pump |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09210215A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002267024A (en) * | 2001-03-07 | 2002-09-18 | Mitsubishi Cable Ind Ltd | Oil seal |
| JP2002276819A (en) * | 2001-03-15 | 2002-09-25 | Mitsubishi Cable Ind Ltd | Oil seal |
| JP2002276818A (en) * | 2001-03-15 | 2002-09-25 | Mitsubishi Cable Ind Ltd | Oil seal |
| JP2002310095A (en) * | 2001-04-11 | 2002-10-23 | Arai Pump Mfg Co Ltd | Seal device for water pump |
| JP2005265161A (en) * | 2004-03-22 | 2005-09-29 | Nok Corp | Seal for fuel injection pump |
-
1996
- 1996-02-05 JP JP8044239A patent/JPH09210215A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002267024A (en) * | 2001-03-07 | 2002-09-18 | Mitsubishi Cable Ind Ltd | Oil seal |
| JP2002276819A (en) * | 2001-03-15 | 2002-09-25 | Mitsubishi Cable Ind Ltd | Oil seal |
| JP2002276818A (en) * | 2001-03-15 | 2002-09-25 | Mitsubishi Cable Ind Ltd | Oil seal |
| JP2002310095A (en) * | 2001-04-11 | 2002-10-23 | Arai Pump Mfg Co Ltd | Seal device for water pump |
| JP2005265161A (en) * | 2004-03-22 | 2005-09-29 | Nok Corp | Seal for fuel injection pump |
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