JPS6332907Y2 - - Google Patents
Info
- Publication number
- JPS6332907Y2 JPS6332907Y2 JP15991882U JP15991882U JPS6332907Y2 JP S6332907 Y2 JPS6332907 Y2 JP S6332907Y2 JP 15991882 U JP15991882 U JP 15991882U JP 15991882 U JP15991882 U JP 15991882U JP S6332907 Y2 JPS6332907 Y2 JP S6332907Y2
- Authority
- JP
- Japan
- Prior art keywords
- impeller
- cooling water
- pump shaft
- pump
- press
- 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
Links
- 239000000498 cooling water Substances 0.000 claims description 15
- 238000007789 sealing Methods 0.000 claims description 11
- 239000011247 coating layer Substances 0.000 claims description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 description 6
- 229910019142 PO4 Inorganic materials 0.000 description 5
- 239000010452 phosphate Substances 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000003746 surface roughness Effects 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 description 2
- CPSYWNLKRDURMG-UHFFFAOYSA-L hydron;manganese(2+);phosphate Chemical compound [Mn+2].OP([O-])([O-])=O CPSYWNLKRDURMG-UHFFFAOYSA-L 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 241000221535 Pucciniales Species 0.000 description 1
- 238000010306 acid treatment Methods 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- LRXTYHSAJDENHV-UHFFFAOYSA-H zinc phosphate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O LRXTYHSAJDENHV-UHFFFAOYSA-H 0.000 description 1
- 229910000165 zinc phosphate Inorganic materials 0.000 description 1
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
【考案の詳細な説明】
本考案は、エンジンの冷却水ポンプの改良に関
する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improvements in engine cooling water pumps.
従来、エンジンのウオータポンプとしては、例
えば実開昭54−51248号に開示されている如く、
エンジンによつて駆動されるポンプ軸１の一端部
に圧入固定したインペラ２を、ハウジング３の冷
却水通路４内に配設するとともに、このインペラ
２の背側に位置するポンプ軸１を包囲して冷却水
が外部へ漏洩するのを防止するシール装置５を備
えたものが実用化されている。 Conventionally, as an engine water pump, for example, as disclosed in Japanese Utility Model Application No. 54-51248,
An impeller 2 press-fitted and fixed to one end of a pump shaft 1 driven by an engine is arranged in a cooling water passage 4 of a housing 3, and the impeller 2 surrounds the pump shaft 1 located on the back side of the impeller 2. A device equipped with a sealing device 5 that prevents cooling water from leaking to the outside has been put into practical use.
ところで、上記ポンプ軸１は通常は鉄系の金属
製であることから、漏洩した冷却水により錆がで
ると、摩擦が生じてシール装置５を損傷し、シー
ル性が悪化し、その結果耐久性を低下させたり、
ポンプ性能を悪化させるという問題があつた。 By the way, since the pump shaft 1 is usually made of iron-based metal, if it rusts due to leaked cooling water, friction will occur and damage the sealing device 5, resulting in poor sealing performance and, as a result, durability. or reduce
There was a problem that the pump performance deteriorated.
この問題の解決のため、ポンプ軸１をメツキ処
理すれば、インペラ２の圧入固定時にメツキが剥
れて嵌合力が低下するという問題が生じ、またポ
ンプ軸１の表面に防錆の被膜を形成するために、
たとえばガス軟窒化処理や蒸気処理を行うと、そ
の処理が高温（500〜600℃）であり、熱変形して
精度が悪くなりインペラ２の圧入が困難になると
いう問題が生じる。 To solve this problem, if the pump shaft 1 is plated, the plating will peel off when the impeller 2 is press-fitted and the fitting force will be reduced, and a rust-preventive film will form on the surface of the pump shaft 1. In order to
For example, when gas nitrocarburizing treatment or steam treatment is performed, the treatment is at a high temperature (500 to 600° C.), which causes thermal deformation, resulting in poor precision and difficulty in press-fitting the impeller 2.
本考案は上記従来の問題点に鑑みてなされたも
ので、ポンプ軸における少なくともインペラの圧
入部外周面およびシール装置によつて包囲された
外周面に、リン酸塩処理の被膜層を形成するよう
にして、この被膜層の性質の活用、つまり防錆効
果によりシール装置のシール性、耐久性及びポン
プ性能の向上を図り、自己潤滑性、平滑性により
インペラの圧入を容易にし、密着性（耐剥離性）
によりインペラの嵌合力の向上を図り、低温処理
性によりポンプ軸の熱変形が少なくなるように工
夫したものである。 The present invention was devised in view of the above-mentioned conventional problems, and is designed to form a phosphate-treated coating layer on at least the outer circumferential surface of the impeller press-fit portion of the pump shaft and the outer circumferential surface surrounded by the sealing device. By utilizing the properties of this coating layer, in other words, its anti-corrosion effect improves the sealing performance, durability and pump performance of the sealing device, and its self-lubrication and smoothness make press-fitting of the impeller easier and improve adhesion (resistance). removability)
The design was designed to improve the fitting force of the impeller, and to reduce thermal deformation of the pump shaft due to its low-temperature processability.
以下、本考案の実施例を添付図面について詳細
に説明する。 Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
第２図に示すように、ポンプハウジング１２の
支持部１３の軸受穴１４に外部からボールベアリ
ング１５を嵌合して止め輪１６で抜け止めすると
ともに、該ベアリング１５によりハウジング１２
の内外に挿通するポンプ軸１７を回転自在、かつ
抜脱不自在に支持する。 As shown in FIG. 2, a ball bearing 15 is externally fitted into the bearing hole 14 of the support part 13 of the pump housing 12 and is prevented from coming off by a retaining ring 16.
A pump shaft 17 inserted into the inside and outside of the pump is rotatably and non-removably supported.
上記ポンプ軸１７の外端部１７ａにはボス１８
を圧入嵌合し、該ボス１８に、エンジンに連動し
て駆動されるベルトのプーリ１９をボルト２０に
より固定する。 A boss 18 is provided at the outer end 17a of the pump shaft 17.
A pulley 19 of a belt driven in conjunction with the engine is fixed to the boss 18 with a bolt 20.
上記ポンプ軸１７の内端部１７ｂにはハウジン
グ１２の冷却水通路２１内に臨むインペラ２２を
圧入固定する。 An impeller 22 facing into the cooling water passage 21 of the housing 12 is press-fitted into the inner end 17b of the pump shaft 17 and fixed thereto.
上記ポンプ軸１７の内端部１７ｂに対応するハ
ウジング１２内には上記軸受穴１４に通じる中空
室１２ａが形成される一方、上記インペラ２２の
背面に環状の凹部２２ａを形成してカーボン２３
を固定するとともに、ハウジング１２の中空室１
２ａに、ポンプ軸１７と同軸でやや大径の断面逆
コ字状の金属プレート２４を水密に嵌着し、該金
属プレート２４に、上記カーボン２３に圧接する
ゴムシール２５をばね２６で付勢して設けて、中
空室１２ａを水密にシールさせる。 A hollow chamber 12a communicating with the bearing hole 14 is formed in the housing 12 corresponding to the inner end 17b of the pump shaft 17, while an annular recess 22a is formed on the back surface of the impeller 22 to form a carbon 23.
and fix the hollow chamber 1 of the housing 12.
2a, a metal plate 24 coaxial with the pump shaft 17 and having a slightly larger diameter and an inverted U-shaped cross section is fitted in a watertight manner, and a rubber seal 25 that presses against the carbon 23 is urged by a spring 26 onto the metal plate 24. The hollow chamber 12a is sealed watertight.
上記中空室１２ａの上部には蒸気抜き孔１２ｂ
を設け、下部にはカーボン２３とゴムシール２５
との圧接部等から中空室１２ａ内に漏洩した冷却
水を排出する冷却水抜き孔１２ｃを設けるととも
に、ポンプ軸１７の内端部１７ｂの根元部には冷
却水がポンプ軸１７を伝つてボールベアリング１
５に入り込むのを阻止するカバー２７を設ける。 A steam vent hole 12b is provided in the upper part of the hollow chamber 12a.
carbon 23 and rubber seal 25 at the bottom.
A cooling water drain hole 12c is provided for discharging the cooling water leaked into the hollow chamber 12a from the pressure contact part etc. with the pump shaft 17, and a cooling water drain hole 12c is provided at the base of the inner end 17b of the pump shaft 17 so that the cooling water can flow through the pump shaft 17 and form a ball. bearing 1
5 is provided with a cover 27 to prevent it from entering.
一方、鉄系のポンプ軸１７の内端部１７ｂの全
長l1にわたつて、リン酸マンガンやリン酸亜鉛等
のリン酸塩処理をし、内端部１７ｂの外周面に被
膜層を形成する。 On the other hand, the entire length l1 of the inner end 17b of the iron-based pump shaft 17 is treated with a phosphate such as manganese phosphate or zinc phosphate to form a coating layer on the outer peripheral surface of the inner end 17b. .
このリン酸塩処理は、リン酸マンガンの場合に
は、ポンプ軸１７を約90℃の水溶液に約20分浸漬
させる。このときの被膜層の厚みは約3μで、平
均表面あらさRaは0.8μであつた。 In the case of manganese phosphate, this phosphate treatment involves immersing the pump shaft 17 in an aqueous solution at about 90° C. for about 20 minutes. The thickness of the coating layer at this time was about 3μ, and the average surface roughness Ra was 0.8μ.
このようにして形成された被膜層は、その性質
上防錆効果が大きく、中空室１２ａに漏洩した冷
却水によつては錆がでないので、錆がカーボン２
３とゴムシール２５との間に入つて摩擦の原因と
はならず、シール性や耐久性が低下するというこ
とがなくなる。また、被膜層は自己潤滑性があり
平均平面あらさRaが0.8μと小さいので、インペ
ラ２２の圧入が容易に行なえる。さらに、被膜層
は密着力（耐剥離性）が強いので、インペラ２２
の圧入時に剥離することがなく嵌合力の低下がな
くなる。さらにまた、被膜層は約90℃の低温処理
で形成できるので、ポンプ軸１７の熱変形が少な
くなりインペラ２２の圧入がより容易に行なえ
る。 The coating layer formed in this way has a large rust-preventing effect due to its nature, and since the cooling water leaking into the hollow chamber 12a does not rust, the rust can be prevented by carbon 2.
3 and the rubber seal 25 and do not cause friction, thereby preventing deterioration in sealing performance and durability. Further, since the coating layer has self-lubricating properties and has a small average surface roughness Ra of 0.8μ, the impeller 22 can be easily press-fitted. Furthermore, since the coating layer has strong adhesion (peeling resistance), the impeller 22
There is no peeling during press-fitting, and there is no reduction in fitting force. Furthermore, since the coating layer can be formed by low-temperature treatment at about 90° C., thermal deformation of the pump shaft 17 is reduced and the impeller 22 can be press-fitted more easily.
なお、上述したリン酸塩処理の後処理として、
さらにクロム酸処理をすると、さらに防錆効果が
向上する。 In addition, as a post-treatment of the above-mentioned phosphate treatment,
Furthermore, chromic acid treatment further improves the rust prevention effect.
また、ポンプ軸１７の外端部１７ａの全長l2に
わたつてリン酸処理及びクロム酸処理をして、防
錆効果等の向上を図るようにしてもよい。 Further, the entire length l 2 of the outer end portion 17a of the pump shaft 17 may be treated with phosphoric acid and chromic acid to improve the rust prevention effect and the like.
以上の説明からも明らかなように、本考案は、
ポンプ軸の外周面にリン酸塩処理の被膜層を形成
したものであるから、防錆効果が大きいのでシー
ル装置のシール性が向上し、その結果耐久性及び
ポンプ性能が向上し、自己潤滑性があり、かつ表
面あらさが小さいのでインペラの圧入が容易にな
り、密着性が大きいのでインペラの圧入時に剥離
することがなく嵌合力が向上し、低温で処理でき
るのでポンプ軸の変形が少なくインペラの圧入が
より容易になる等の種々の効果を有し、実用上の
価値が大きいものである。 As is clear from the above explanation, the present invention
A phosphate-treated coating layer is formed on the outer circumferential surface of the pump shaft, which has a great anti-corrosion effect and improves the sealing performance of the sealing device, resulting in improved durability and pump performance, as well as self-lubricating properties. The small surface roughness makes it easy to press-fit the impeller, the strong adhesion prevents the impeller from peeling off when it is press-fitted, improving the fitting force, and the process can be carried out at low temperatures, which reduces deformation of the pump shaft and improves the impeller's fit. It has various effects such as easier press-fitting, and is of great practical value.
第１図は従来のウオータポンプの断面図、第２
図は本考案に係るウオータポンプの断面図であ
る。
１２……ポンプハウジング、１５……ボールベ
アリング、１７……ポンプ軸、１７ａ……外端
部、１７ｂ……内端部、２１……冷却水通路、２
２……インペラ、２３，２４，２５，２６……シ
ール装置。
Figure 1 is a sectional view of a conventional water pump, Figure 2 is a sectional view of a conventional water pump.
The figure is a sectional view of a water pump according to the present invention. 12...Pump housing, 15...Ball bearing, 17...Pump shaft, 17a...Outer end, 17b...Inner end, 21...Cooling water passage, 2
2... Impeller, 23, 24, 25, 26... Seal device.
Claims (1)
端部に圧入固定したインペラを、ハウジングの冷
却水通路内に配設するとともに、このインペラの
背側に位置するポンプ軸を包囲し冷却水が外部へ
漏洩するのを防止するシール装置を備えた冷却水
ポンプにおいて、 上記ポンプ軸における少なくともインペラの圧
入部外周面およびシール装置によつて包囲された
外周面に、リン酸塩処理の被膜層を形成したこと
を特徴とするエンジンの冷却水ポンプ。[Claim for Utility Model Registration] An impeller press-fitted and fixed to one end of an iron-based pump shaft driven by an engine is disposed within the cooling water passage of the housing, and a pump located on the back side of this impeller. In a cooling water pump equipped with a sealing device that surrounds the shaft and prevents cooling water from leaking to the outside, a ring is provided on at least the outer circumferential surface of the press-fit portion of the impeller and the outer circumferential surface surrounded by the sealing device on the pump shaft. An engine cooling water pump characterized by forming an acid-treated coating layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15991882U JPS5964428U (en) | 1982-10-21 | 1982-10-21 | engine coolant pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15991882U JPS5964428U (en) | 1982-10-21 | 1982-10-21 | engine coolant pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5964428U JPS5964428U (en) | 1984-04-27 |
| JPS6332907Y2 true JPS6332907Y2 (en) | 1988-09-02 |
Family
ID=30351889
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15991882U Granted JPS5964428U (en) | 1982-10-21 | 1982-10-21 | engine coolant pump |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5964428U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20180092461A (en) * | 2017-02-09 | 2018-08-20 | 주식회사 삼우에이엔씨 | Face velocity and sound proofing appratus and managemet system using it |
-
1982
- 1982-10-21 JP JP15991882U patent/JPS5964428U/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20180092461A (en) * | 2017-02-09 | 2018-08-20 | 주식회사 삼우에이엔씨 | Face velocity and sound proofing appratus and managemet system using it |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5964428U (en) | 1984-04-27 |
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