JPH04262096A - Water pump - Google Patents
Water pumpInfo
- Publication number
- JPH04262096A JPH04262096A JP2409515A JP40951590A JPH04262096A JP H04262096 A JPH04262096 A JP H04262096A JP 2409515 A JP2409515 A JP 2409515A JP 40951590 A JP40951590 A JP 40951590A JP H04262096 A JPH04262096 A JP H04262096A
- Authority
- JP
- Japan
- Prior art keywords
- rotating shaft
- water pump
- pump
- support part
- bearing
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 40
- 230000005540 biological transmission Effects 0.000 claims description 13
- 230000008595 infiltration Effects 0.000 abstract 1
- 238000001764 infiltration Methods 0.000 abstract 1
- 238000007789 sealing Methods 0.000 description 6
- 239000004519 grease Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/10—Shaft sealings
- F04D29/12—Shaft sealings using sealing-rings
- F04D29/126—Shaft sealings using sealing-rings especially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/60—Fluid transfer
- F05D2260/602—Drainage
- F05D2260/6022—Drainage of leakage having past a seal
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Sealing Of Bearings (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、ポンプケース内に形成
されているポンプ室に軸方向内端を突入させた回転軸が
ポンプケースに回転自在に支承され、回転軸の軸方向外
端には動力伝達用回転輪が設けられるウォータポンプに
関する。[Industrial Field of Application] The present invention is characterized in that a rotating shaft whose axially inner end protrudes into a pump chamber formed within a pump case is rotatably supported by the pump case, and an axially outer end of the rotating shaft is rotatably supported by the pump case. relates to a water pump provided with a rotating wheel for power transmission.
【０００２】0002
【従来の技術】従来、かかるウォータポンプは、たとえ
ば実開昭６１−１６９２３０号公報等により公知であり
、ベアリングを介してポンプケースに支承された回転軸
の軸方向に沿って前記ベアリングの内方側でポンプケー
スおよび回転軸間にはメカニカルシールが介設され、メ
カニカルシールから漏出した水がベアリング内に侵入す
ることを防止するために、ベアリングおよびメカニカル
シール間において、回転軸にはバッフルプレートが設け
られ、ポンプケースには水を排出するための排出孔が設
けられている。2. Description of the Related Art Conventionally, such a water pump has been known, for example, from Japanese Utility Model Application Publication No. 169230/1983, and the water pump is arranged so that the inner side of the bearing is disposed along the axial direction of a rotating shaft supported in a pump case via a bearing. A mechanical seal is interposed between the pump case and the rotating shaft on the side, and a baffle plate is installed on the rotating shaft between the bearing and the mechanical seal to prevent water leaking from the mechanical seal from entering the bearing. The pump case is provided with a discharge hole for discharging water.
【０００３】0003
【発明が解決しようとする課題】ところが、上記従来の
ものでは、回転軸とともに回転作動するバッフルプレー
トで水を排出孔から完全に排出することは困難であり、
水蒸気のベアリング内への侵入を確実に阻止することは
困難である。[Problems to be Solved by the Invention] However, in the above-mentioned conventional device, it is difficult to completely drain water from the drain hole using the baffle plate that rotates with the rotating shaft.
It is difficult to reliably prevent water vapor from entering the bearing.
【０００４】本発明は、かかる事情に鑑みてなされたも
のであり、軸受手段への水の侵入を確実に阻止し得るよ
うにしたコンパクトなウォータポンプを提供することを
目的とする。The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a compact water pump that can reliably prevent water from entering the bearing means.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するため
に本発明によれば、ポンプケースには回転軸を囲繞する
円筒状の支持部が設けられ、該支持部から外方に突出し
た回転軸の外端には支持部を囲繞する円筒状に形成され
た動力伝達用回転輪が一体的に結合され、動力伝達用回
転輪の内面および支持部の外面間には軸受手段が介設さ
れ、支持部の内面および回転軸間には前記軸受手段と同
心状に配置されるシール部材のみが介設される。[Means for Solving the Problems] In order to achieve the above object, according to the present invention, the pump case is provided with a cylindrical support portion surrounding the rotating shaft, and the rotating shaft protrudes outward from the support portion. A cylindrical power transmission rotating ring surrounding the support part is integrally connected to the outer end of the shaft, and a bearing means is interposed between the inner surface of the power transmission rotation ring and the outer surface of the support part. Only a seal member disposed concentrically with the bearing means is interposed between the inner surface of the support portion and the rotating shaft.
【０００６】[0006]
【実施例】以下、図面により本発明の実施例について説
明する。Embodiments Hereinafter, embodiments of the present invention will be explained with reference to the drawings.
【０００７】図１ないし図３は本発明の一実施例を示す
ものであり、図１はウォータポンプが配設されるエンジ
ンの側面図、図２はウォータポンプの正面図、図３は図
２の３−３線断面図である。1 to 3 show an embodiment of the present invention, in which FIG. 1 is a side view of an engine in which a water pump is installed, FIG. 2 is a front view of the water pump, and FIG. FIG. 3 is a sectional view taken along line 3-3.
【０００８】先ず図１において、ウォータポンプＰは、
自動車用ＤＯＨＣ型エンジンにおけるエンジン本体１の
側面に配設されており、該ウォータポンプＰには、クラ
ンク軸２からの動力が巻掛伝動装置４を介して伝達され
る。該巻掛伝動装置４は、クランク軸２と平行にしてエ
ンジン本体１の上部に回転自在に支承されている一対の
動弁カム軸５，６と、前記ウォータポンプＰとを駆動す
るための調時伝動装置であり、クランク軸２に固定され
る駆動プーリ７と、ウォータポンプＰを駆動するための
被動プーリ８と、両動弁カム軸５，６にそれぞれ固定さ
れる被動プーリ９，１０とにタイミングベルト１１が懸
回されて成り、駆動プーリ７によりタイミングベルト１
１が矢印１２で示す走行駆動方向に駆動されることによ
り、ウォータポンプＰおよび両動弁カム軸５，６が回転
駆動される。しかも駆動プーリ７および被動プーリ８間
でタイミングベルト１１には、その張力を調節するため
のテンショナ１３が弾発的に摺接される。First, in FIG. 1, the water pump P is
The water pump P is disposed on a side surface of an engine body 1 in a DOHC engine for an automobile, and power from a crankshaft 2 is transmitted to the water pump P via a wrap transmission device 4. The wrap transmission device 4 has an adjustment mechanism for driving a pair of valve drive camshafts 5 and 6 that are rotatably supported on the upper part of the engine body 1 in parallel with the crankshaft 2, and the water pump P. It is a time transmission device, and includes a drive pulley 7 fixed to the crankshaft 2, a driven pulley 8 for driving the water pump P, and driven pulleys 9 and 10 fixed to the double valve camshafts 5 and 6, respectively. A timing belt 11 is suspended around the timing belt 11, and the timing belt 1 is
1 is driven in the travel drive direction shown by arrow 12, water pump P and both valve camshafts 5 and 6 are rotationally driven. Furthermore, a tensioner 13 for adjusting the tension of the timing belt 11 is elastically slid into contact with the timing belt 11 between the driving pulley 7 and the driven pulley 8.
【０００９】図２および図３において、ウォータポンプ
Ｐのポンプケース１４は、エンジン本体１と、該エンジ
ン本体１との間にポンプ室１６を画成してエンジン本体
１の側面に固着されるカバー１５とで構成され、該ポン
プケース１４に回転自在に支承されてポンプ室１６に突
入される回転軸１７の軸方向内端にはインペラ１８が圧
入、固定され、カバー１５から突出した回転軸１７の外
端に、動力伝達用回転輪としての前記被動プーリ８が設
けられる。In FIGS. 2 and 3, a pump case 14 of a water pump P includes an engine body 1 and a cover fixed to a side surface of the engine body 1, defining a pump chamber 16 between the engine body 1 and the engine body 1. An impeller 18 is press-fitted and fixed to the axially inner end of a rotating shaft 17 that is rotatably supported by the pump case 14 and thrust into the pump chamber 16, and the rotating shaft 17 protrudes from the cover 15. The driven pulley 8 as a rotating wheel for power transmission is provided at the outer end of the drive pulley 8 .
【００１０】ポンプケース１４においてカバー１５には
、円筒状に形成された支持部２０が一体に設けられてお
り、回転軸１７は該支持部２０を同軸に貫通して配置さ
れる。支持部２０から外方に突出した回転軸１７の外端
には、半径方向外方に張出す鍔部２１が設けられており
、支持部２０を同軸に囲繞する円筒状に形成された被動
プーリ８が前記鍔部２１の半径方向外端縁に一体的に結
合される。[0010] In the pump case 14, a cover 15 is integrally provided with a support portion 20 formed in a cylindrical shape, and the rotating shaft 17 is disposed coaxially passing through the support portion 20. The outer end of the rotating shaft 17 that protrudes outward from the support part 20 is provided with a flange part 21 that projects outward in the radial direction, and a cylindrical driven pulley that coaxially surrounds the support part 20. 8 is integrally coupled to the radially outer edge of the collar portion 21.
【００１１】被動プーリ８の内面と支持部２０の外面と
の間には、軸受手段としての複列ボールベアリング２２
が介設される。したがって回転軸１７は該複列ボールベ
アリング２２を介してカバー１５すなわちポンプケース
１４に回転自在に支承されることになる。しかも該複列
ボールベアリング２２は、その内輪および外輪の軸方向
両端部間にわたってはシール部材２２ａ，２２ａがそれ
ぞれ設けられており、それらのシール部材２２ａ，２２
ａは複列ボールベアリング２２内への水および塵埃の侵
入を防止する。また鍔部２１には、前記複列ボールベア
リング２２の端部を臨ませる複数たとえば４つの透孔２
３が周方向に間隔をあけて穿設されている。A double row ball bearing 22 serving as a bearing means is provided between the inner surface of the driven pulley 8 and the outer surface of the support portion 20.
is intervened. Therefore, the rotating shaft 17 is rotatably supported by the cover 15, that is, the pump case 14, via the double-row ball bearing 22. Moreover, the double row ball bearing 22 is provided with seal members 22a, 22a, respectively, between both ends of the inner ring and the outer ring in the axial direction.
a prevents water and dust from entering into the double row ball bearing 22. Further, the flange portion 21 has a plurality of, for example, four, through holes 2 through which the ends of the double row ball bearings 22 are exposed.
3 are bored at intervals in the circumferential direction.
【００１２】カバー１５の内面には、前記支持部２０の
内端を同軸に囲繞するようにしてポンプ室１６側に突出
する円筒部２４が一体に設けられており、この円筒部２
４と回転軸１７との間には、従来周知のメカニカルシー
ル２５が介設される。さらに前記複列ボールベアリング
２２にほぼ対応する軸方向位置で、支持部２０の内面お
よび回転軸１７の外面間には、軸方向に間隔をあけて一
対のシール部材２６，２６が介設されており、両シール
部材２６，２６間にはグリース２７が充填される。この
グリース２７は、両シール部材２６，２６と回転軸１７
との間の潤滑作用を果たすとともに、回転軸１７の軸方
向内方側にあるシール部材２６から水分が漏出したとし
てもその漏出水分のトラップ作用を果たすことができる
。A cylindrical portion 24 is integrally provided on the inner surface of the cover 15 and protrudes toward the pump chamber 16 so as to coaxially surround the inner end of the support portion 20.
A conventionally well-known mechanical seal 25 is interposed between the rotary shaft 17 and the rotary shaft 17 . Furthermore, a pair of seal members 26, 26 are interposed between the inner surface of the support portion 20 and the outer surface of the rotating shaft 17 at an axial position substantially corresponding to the double-row ball bearing 22, with an interval in the axial direction. Grease 27 is filled between both seal members 26, 26. This grease 27 is applied to both seal members 26, 26 and the rotating shaft 17.
In addition, even if moisture leaks from the seal member 26 located on the axially inward side of the rotating shaft 17, it can trap the leaked moisture.
【００１３】回転軸１７の軸方向に沿う内方側のシール
部材２６とメカニカルシール２５との間で、カバー１５
内には回転軸１７を囲む環状室２８が形成されており、
この環状室２８内で回転軸１７にはメカニカルシール２
５側に向けて配置されたファン２９が固定される。この
ファン２９は、回転軸１７の半径方向に沿う複数の羽根
を有するものであり、回転軸１７には、両端をファン２
９の内部に開口させた連通孔３０が一直径線に沿って穿
設される。また内端を連通孔３０に連通させた導入孔３
１が回転軸１７に同軸に穿設されており、該導入孔３１
の外端は、空気の導入を良好にすべくテーパ状あるいは
段差状にして軸方向外方側を拡大した拡開部３１ａによ
り外部に開放される。したがって回転軸１７すなわちフ
ァン２９の回転作動により、環状室２８内に導入孔３１
および連通孔３０を介して外部から空気が導入されると
ともにその導入空気に遠心力が与えられることになる。Between the inner seal member 26 along the axial direction of the rotating shaft 17 and the mechanical seal 25, the cover 15
An annular chamber 28 surrounding the rotating shaft 17 is formed inside.
A mechanical seal 2 is attached to the rotating shaft 17 within this annular chamber 28.
A fan 29 disposed toward the 5 side is fixed. This fan 29 has a plurality of blades along the radial direction of the rotating shaft 17, and the rotating shaft 17 has both ends attached to the fan 2.
A communication hole 30 opened inside the tube 9 is bored along one diameter line. Also, the introduction hole 3 whose inner end communicates with the communication hole 30
1 is bored coaxially with the rotating shaft 17, and the introduction hole 31
The outer end is opened to the outside by an enlarged part 31a which is tapered or stepped and enlarged on the axially outward side in order to improve the introduction of air. Therefore, due to the rotation of the rotating shaft 17, that is, the fan 29, the introduction hole 31 is introduced into the annular chamber 28.
Air is introduced from the outside through the communication hole 30, and a centrifugal force is applied to the introduced air.
【００１４】ところで、上述のような拡開部３１ａが導
入孔３１の外端に設けられることにより、回転軸１７の
変形およびそれに伴うシール部材２６，２６のシール不
良を生じる心配があるが、回転軸１７は、支持部２０を
囲繞する被動プーリ８と支持部２０との間に複列ボール
ベアリング２２を介設することにより支持されており、
回転軸１７に過大な荷重がかかることはないので、上記
回転軸１７の変形およびそれに伴うシール不良が生じる
おそれはなく、導入孔３１への空気の導入を良好にする
ことができる。By the way, by providing the expanded portion 31a as described above at the outer end of the introduction hole 31, there is a concern that deformation of the rotating shaft 17 and associated sealing failure of the seal members 26, 26 may occur. The shaft 17 is supported by a double row ball bearing 22 interposed between the driven pulley 8 surrounding the support part 20 and the support part 20,
Since an excessive load is not applied to the rotating shaft 17, there is no risk of deformation of the rotating shaft 17 and resulting seal failure, and air can be effectively introduced into the introduction hole 31.
【００１５】一方、カバー１５には、外端を外部に開放
するとともに内端を環状室２８にそれぞれ開口させた排
水孔３２および水蒸気排出孔３３が穿設されている。而
して排水孔３２は、回転軸１７の回転方向３４に沿って
内端から外端に向かうにつれて回転軸１７の半径方向外
方位置となるようにしてカバー１５の下部に穿設されて
おり、また水蒸気排出孔３３は、その軸線と前記排水孔
３２の軸線とのなす角度が鋭角となるようにしてカバー
１５の上部に穿設される。On the other hand, the cover 15 is provided with a drainage hole 32 and a water vapor discharge hole 33 whose outer ends are open to the outside and whose inner ends are opened to the annular chamber 28, respectively. The drain hole 32 is formed in the lower part of the cover 15 so as to be located radially outward of the rotary shaft 17 from the inner end to the outer end along the rotational direction 34 of the rotary shaft 17. Further, the water vapor discharge hole 33 is formed in the upper part of the cover 15 so that the angle between its axis and the axis of the drainage hole 32 is an acute angle.
【００１６】次にこの実施例の作用について説明すると
、ウォータポンプＰの作動時にポンプ室１６と環状室２
８との間は、メカニカルシール２５でシールされており
、ポンプ室１６内の水が環状室２８に漏出することはほ
ぼ阻止されるが、メカニカルシール２５による完全なシ
ールは困難であり、メカニカルシール２５における摩擦
熱により蒸発した水蒸気を含む微量の水の環状室２８へ
の漏出は避け難い。しかるに、環状室２８内ではファン
２９により導入孔３１および連通孔３０を経て外部から
空気が導入されており、その導入空気には遠心力が作用
する。したがってメカニカルシール２５から環状室２８
に漏出した水および水蒸気にも遠心力が作用し、水蒸気
の一部および水は排水孔３２から外部に、また残余の水
蒸気は水蒸気排出孔３３から外部に強制的に排出される
。しかも空気が環状室２８内を流動することによりメカ
ニカルシール２５の冷却を図ることができ、メカニカル
シール２５での摩擦熱の発生を極力抑えることができる
。Next, the operation of this embodiment will be explained. When the water pump P is operated, the pump chamber 16 and the annular chamber 2
8 is sealed with a mechanical seal 25, which almost prevents the water in the pump chamber 16 from leaking into the annular chamber 28. However, it is difficult to achieve a complete seal with the mechanical seal 25, and the mechanical seal 25 It is unavoidable that a trace amount of water containing vapor evaporated by the frictional heat at 25 leaks into the annular chamber 28. However, air is introduced from the outside into the annular chamber 28 by the fan 29 through the introduction hole 31 and the communication hole 30, and a centrifugal force acts on the introduced air. Therefore, from the mechanical seal 25 to the annular chamber 28
Centrifugal force also acts on the leaked water and steam, and a portion of the steam and water are forcibly discharged to the outside from the drain hole 32, and the remaining steam is forcibly discharged to the outside from the steam discharge hole 33. Moreover, the mechanical seal 25 can be cooled by the air flowing inside the annular chamber 28, and the generation of frictional heat in the mechanical seal 25 can be suppressed as much as possible.
【００１７】ところで、前記ファン２９の働きにより環
状室２８から水分を完全に排出することは困難であるが
、環状室２８および複列ボールベアリング２２間には、
一対のシール部材２６，２６が配設されており、内方側
のシール部材２６から水分が漏出したとしても両シール
部材２６，２６間のグリース２７で水分の漏洩を止める
ことができるので、環状室２８から複列ボールベアリン
グ２２側に水分が漏出することを確実に阻止することが
でき、耐水性を向上することができる。By the way, although it is difficult to completely drain moisture from the annular chamber 28 due to the action of the fan 29, there is a gap between the annular chamber 28 and the double-row ball bearing 22.
A pair of seal members 26, 26 are provided, and even if water leaks from the inner seal member 26, the grease 27 between both seal members 26, 26 can stop the water leakage. It is possible to reliably prevent moisture from leaking from the chamber 28 to the double-row ball bearing 22 side, and water resistance can be improved.
【００１８】しかも両シール部材２６，２６は、回転軸
１７への外部荷重作用時に回転軸１７の変形が最も小さ
い部位、すなわち複列ボールベアリング２２とほぼ同一
の軸方向位置で支持部２０および回転軸１７間に介設さ
れているので、両シール部材１６，１６に優れたシール
効果を発揮させることができ、耐水性をより向上するこ
とができるとともに、支持部２０の長さを極力短縮して
ウォータポンプＰのコンパクト化に寄与することができ
る。Moreover, both the seal members 26, 26 are arranged at a portion where the rotation shaft 17 is least deformed when an external load is applied to the rotation shaft 17, that is, at approximately the same axial position as the double row ball bearing 22. Since it is interposed between the shafts 17, both the seal members 16, 16 can exhibit an excellent sealing effect, the water resistance can be further improved, and the length of the support part 20 can be shortened as much as possible. This can contribute to making the water pump P more compact.
【００１９】さらに回転軸１７と被動プーリ８とを連結
する鍔部２１に複数の透孔２３を設けたことにより、複
列ボールベアリング２２およびシール部材２６，２６を
冷却することができ、それらの透孔２３を用いて複列ボ
ールベアリング２２の装着作業を行なうことができる。Furthermore, by providing a plurality of through holes 23 in the flange 21 that connects the rotating shaft 17 and the driven pulley 8, the double row ball bearing 22 and the seal members 26, 26 can be cooled. The double row ball bearing 22 can be installed using the through hole 23.
【００２０】本発明の他の実施例として図４で示すよう
に、回転軸１７および支持部２０間に単一のシール部材
２６を介設するようにしてもよく、その場合、上記実施
例に比べてシール性が多少低下するが、複列ボールベア
リング２２への水分の侵入を従来のものと比べてより確
実に防止することができる。As another embodiment of the present invention, as shown in FIG. 4, a single sealing member 26 may be interposed between the rotating shaft 17 and the support portion 20. Although the sealing performance is somewhat lowered compared to that, it is possible to more reliably prevent moisture from entering the double row ball bearing 22 compared to the conventional one.
【００２１】以上の各実施例では、軸受手段として複列
ボールベアリング２２を用いたが、ローラベアリングや
すべり軸受等の他の軸受手段を用いたものにも本発明を
適用可能である。In each of the above embodiments, a double row ball bearing 22 was used as the bearing means, but the present invention is also applicable to those using other bearing means such as a roller bearing or a sliding bearing.
【００２２】[0022]
【発明の効果】以上のように本発明によれば、ポンプケ
ースには回転軸を囲繞する円筒状の支持部が設けられ、
該支持部から外方に突出した回転軸の外端には支持部を
囲繞する円筒状に形成された動力伝達用回転輪が一体的
に結合され、動力伝達用回転輪の内面および支持部の外
面間には軸受手段が介設され、支持部の内面および回転
軸間には前記軸受手段と同心状に配置されるシール部材
のみが介設されるので、軸受手段の耐水性を向上するこ
とができ、しかもシール部材および軸受手段を設けたに
もかかわらずウォータポンプが大型化することを回避す
ることが可能となる。[Effects of the Invention] As described above, according to the present invention, the pump case is provided with a cylindrical support portion surrounding the rotating shaft,
A cylindrical power transmission rotating ring surrounding the support part is integrally coupled to the outer end of the rotating shaft protruding outward from the support part, and the inner surface of the power transmission rotating ring and the support part are connected to each other. Since the bearing means is interposed between the outer surfaces, and only the sealing member disposed concentrically with the bearing means is interposed between the inner surface of the support part and the rotating shaft, the water resistance of the bearing means is improved. Moreover, it is possible to avoid increasing the size of the water pump even though the sealing member and bearing means are provided.
【図１】本発明の一実施例のウォータポンプが配設され
るエンジンの側面図である。FIG. 1 is a side view of an engine in which a water pump according to an embodiment of the present invention is installed.
【図２】ウォータポンプの正面図である。FIG. 2 is a front view of the water pump.
【図３】図２の３−３線断面図である。FIG. 3 is a sectional view taken along line 3-3 in FIG. 2;
【図４】本発明の他の実施例の図３に対応する断面図で
ある。FIG. 4 is a sectional view corresponding to FIG. 3 of another embodiment of the present invention.
８ 動力伝達用回転輪としての被動プー
リ１４ ポンプケース
１６ ポンプ室
１７ 回転軸
２０ 支持部
２２ 軸受手段としての複列ボールベアリン
グ２６ シール部材
Ｐ ウォータポンプ8 Driven pulley 14 as a rotating wheel for power transmission Pump case 16 Pump chamber 17 Rotating shaft 20 Support part 22 Double row ball bearing 26 as bearing means Seal member P Water pump
Claims (1)
いるポンプ室（１６）に軸方向内端を突入させた回転軸
（１７）がポンプケース（１４）に回転自在に支承され
、回転軸（１７）の軸方向外端には動力伝達用回転輪（
８）が設けられるウォータポンプにおいて、ポンプケー
ス（１４）には回転軸（１７）を囲繞する円筒状の支持
部（２０）が設けられ、該支持部（２０）から外方に突
出した回転軸（１７）の外端には支持部（２０）を囲繞
する円筒状に形成された動力伝達用回転輪（８）が一体
的に結合され、動力伝達用回転輪（８）の内面および支
持部（２０）の外面間には軸受手段（２２）が介設され
、支持部（２０）の内面および回転軸（１７）間には前
記軸受手段（２２）と同心状に配置されるシール部材（
２６）のみが介設されることを特徴とするウォータポン
プ。Claim 1: A rotating shaft (17) whose inner end in the axial direction protrudes into a pump chamber (16) formed in a pump case (14) is rotatably supported by the pump case (14). At the axially outer end of (17) is a rotating wheel for power transmission (
8), the pump case (14) is provided with a cylindrical support part (20) surrounding the rotation shaft (17), and the rotation shaft protrudes outward from the support part (20). A cylindrical power transmission rotating ring (8) surrounding the support part (20) is integrally connected to the outer end of (17), and the inner surface of the power transmission rotation ring (8) and the support part A bearing means (22) is interposed between the outer surface of the support portion (20) and a seal member (22) disposed concentrically with the bearing means (22) between the inner surface of the support portion (20) and the rotating shaft (17)
A water pump characterized in that only 26) is provided.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2409515A JP2967369B2 (en) | 1990-12-28 | 1990-12-28 | Water pump |
| US07/811,435 US5217350A (en) | 1990-12-28 | 1991-12-23 | Water pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2409515A JP2967369B2 (en) | 1990-12-28 | 1990-12-28 | Water pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04262096A true JPH04262096A (en) | 1992-09-17 |
| JP2967369B2 JP2967369B2 (en) | 1999-10-25 |
Family
ID=18518845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2409515A Expired - Fee Related JP2967369B2 (en) | 1990-12-28 | 1990-12-28 | Water pump |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2967369B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0635640A1 (en) * | 1993-07-20 | 1995-01-25 | Kabushiki Kaisha Toyoda Jidoshokki Seisakusho | Bearing structure used in a compressor |
| US6561756B2 (en) | 2000-09-19 | 2003-05-13 | Aisin Seiki Kabushiki Kaisha | Water pump |
| EP1338797A2 (en) | 2002-02-21 | 2003-08-27 | Aisin Seiki Kabushiki Kaisha | Water pump |
| US6764278B2 (en) | 2001-05-22 | 2004-07-20 | Aisin Seiki Kabushiki Kaisha | Water pump |
| CN100449153C (en) * | 2004-09-27 | 2009-01-07 | 株式会社Tbk | Fluid pump |
| WO2015098293A1 (en) * | 2013-12-27 | 2015-07-02 | 日立オートモティブシステムズ株式会社 | Water pump and method for producing water pump |
-
1990
- 1990-12-28 JP JP2409515A patent/JP2967369B2/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0635640A1 (en) * | 1993-07-20 | 1995-01-25 | Kabushiki Kaisha Toyoda Jidoshokki Seisakusho | Bearing structure used in a compressor |
| US5586870A (en) * | 1993-07-20 | 1996-12-24 | Kabushiki Kaisha Toyoda Jidoshokki Seisakusho | Bearing structure used in a compressor |
| US6561756B2 (en) | 2000-09-19 | 2003-05-13 | Aisin Seiki Kabushiki Kaisha | Water pump |
| EP1188931A3 (en) * | 2000-09-19 | 2003-11-12 | Aisin Seiki Kabushiki Kaisha | Water pump |
| US6764278B2 (en) | 2001-05-22 | 2004-07-20 | Aisin Seiki Kabushiki Kaisha | Water pump |
| EP1338797A2 (en) | 2002-02-21 | 2003-08-27 | Aisin Seiki Kabushiki Kaisha | Water pump |
| EP1338797A3 (en) * | 2002-02-21 | 2004-02-04 | Aisin Seiki Kabushiki Kaisha | Water pump |
| US6960066B2 (en) | 2002-02-21 | 2005-11-01 | Aisin Seiki Kabushiki Kaisha | Water pump with a hollow shaft, seal, and drain opening therein |
| CN100449153C (en) * | 2004-09-27 | 2009-01-07 | 株式会社Tbk | Fluid pump |
| WO2015098293A1 (en) * | 2013-12-27 | 2015-07-02 | 日立オートモティブシステムズ株式会社 | Water pump and method for producing water pump |
| JPWO2015098293A1 (en) * | 2013-12-27 | 2017-03-23 | 日立オートモティブシステムズ株式会社 | Water pump and method for manufacturing the water pump |
| US9810240B2 (en) | 2013-12-27 | 2017-11-07 | Hitachi Automotive Systems, Ltd. | Water pump and method for producing water pump |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2967369B2 (en) | 1999-10-25 |
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