JPS632631Y2 - - Google Patents
Info
- Publication number
- JPS632631Y2 JPS632631Y2 JP5543483U JP5543483U JPS632631Y2 JP S632631 Y2 JPS632631 Y2 JP S632631Y2 JP 5543483 U JP5543483 U JP 5543483U JP 5543483 U JP5543483 U JP 5543483U JP S632631 Y2 JPS632631 Y2 JP S632631Y2
- Authority
- JP
- Japan
- Prior art keywords
- bearing
- housing
- pressure
- hole
- pump
- 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
Landscapes
- Compressor (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Description
【考案の詳細な説明】 技術分野 本考案はポンプの軸支持構造に関する。[Detailed explanation of the idea] Technical field The present invention relates to a shaft support structure for a pump.
背景技術
ポンプが自動車の機械式過給機として使用され
る場合に、ポンプは広範な回転数の範囲及び変化
の激しい周囲環境の下に使用されるために、円滑
な回転を永く保持する軸支持構造が必要とされ
る。ポンプ作動中にはポンプ内の圧力が当然上昇
し、この圧力の一部がハウジング壁面に沿つて軸
受の片側に作用し、よつて軸受の両側に圧力差が
できる。この圧力差のために、グリース密封型軸
受を用いたとしても、グリースが軸受から漏れ、
軸受の耐久性が損なわれる。又、オイル潤滑を行
うようにした軸受の場合にはオイルが軸受に十分
潤滑されにくくなる。BACKGROUND ART When a pump is used as a mechanical supercharger for an automobile, the pump is used in a wide range of rotational speeds and under rapidly changing surrounding environments, so it requires a shaft support that maintains smooth rotation for a long time. Structure is needed. During pump operation, the pressure within the pump naturally increases, and some of this pressure acts on one side of the bearing along the housing wall, thus creating a pressure differential on both sides of the bearing. Because of this pressure difference, even if grease-sealed bearings are used, grease can leak from the bearings.
The durability of the bearing is impaired. Furthermore, in the case of a bearing that is lubricated with oil, it becomes difficult for the bearing to be sufficiently lubricated with oil.
考案の目的
本考案は上述の問題点を解決するためになされ
たもので、軸受の両側の圧力を均等化させ、よつ
て軸受に封入したグリースが外部へ漏れるのを防
止し、又、軸受のオイル潤滑性を高めることを目
的とする。Purpose of the invention The present invention was made to solve the above-mentioned problems, and it equalizes the pressure on both sides of the bearing, thereby preventing the grease sealed in the bearing from leaking to the outside. The purpose is to improve oil lubricity.
考案の構成
上記目的を達成するために、本考案において
は、ハウジングに軸受の両側に連通する通路を設
け、この通路により軸受の両側の圧力が受に同一
に保たれるように構成したことを特徴とする。Structure of the Device In order to achieve the above object, the present invention has a structure in which a passage is provided in the housing that communicates with both sides of the bearing, and this passage maintains the same pressure on both sides of the bearing. Features.
実施例
以下本考案の実施例について図面を参照して説
明する。Embodiments Examples of the present invention will be described below with reference to the drawings.
第1図は本考案をルーツ式ポンプに適用した実
施例の断面図である。ハウジング1中にまゆ形断
面のロータ2が2個収容されている。ロータ2は
軸3にそれぞれ固着されている。軸3はロータ2
の両端面4よりさらに延長され、軸受5を介して
ハウジング1に支承される。図に示すポンプは自
動車の機械式過給機として使用されており、エン
ジンのクランク軸とポンプの一方の軸3とを選択
的に継続する電磁クラツチ6を具えている。この
電磁クラツチ6に結合された一方の軸3と他方の
軸3とは一対の歯車7によつて結合される。従つ
て、2個のロータ2は相互に90度の位相をもつて
同期に回転される。 FIG. 1 is a sectional view of an embodiment in which the present invention is applied to a Roots type pump. Two rotors 2 having a cocoon-shaped cross section are housed in a housing 1. The rotors 2 are each fixed to a shaft 3. Axis 3 is rotor 2
The housing 1 extends further from both end faces 4 of the housing 1 and is supported by the housing 1 via bearings 5. The pump shown in the figure is used as a mechanical supercharger for a motor vehicle and is equipped with an electromagnetic clutch 6 for selectively connecting the crankshaft of the engine to one shaft 3 of the pump. One shaft 3 coupled to the electromagnetic clutch 6 and the other shaft 3 are coupled by a pair of gears 7. Therefore, the two rotors 2 are rotated synchronously with a mutual phase of 90 degrees.
この回転の際に、ロータ2の外周とハウジング
1の内周との間で空気圧縮作用を行う。ロータ2
の端面4とこれに対向するハウジング壁面8との
間には微少なクリアランスが設けられ、ロータ2
とハウジング1とが接触することなく圧縮作用が
行われるようになつている。このために、ハウジ
ング壁面8とロータ端面4との間のクリアランス
によつて形成される空間にはポンプの最大圧によ
り低く且つ大気圧より高い空気圧力が生ずること
になる。この圧力は、ハウジング壁面8から凹設
された軸3を挿入すべき穴にも作用する。従つ
て、軸受5の片側には高圧がかかり、その反対側
には大気圧がかかることになり、軸受5の両側に
圧力差ができることになる。 During this rotation, air compression is performed between the outer periphery of the rotor 2 and the inner periphery of the housing 1. Rotor 2
A minute clearance is provided between the end face 4 of the rotor 2 and the housing wall face 8 facing thereto, so that the rotor 2
The compression action is performed without the housing 1 and the housing 1 coming into contact with each other. For this reason, an air pressure lower than the atmospheric pressure due to the maximum pressure of the pump is generated in the space formed by the clearance between the housing wall surface 8 and the rotor end surface 4. This pressure also acts on a hole recessed from the housing wall 8 into which the shaft 3 is to be inserted. Therefore, high pressure is applied to one side of the bearing 5 and atmospheric pressure is applied to the opposite side, creating a pressure difference on both sides of the bearing 5.
第1図の右方側には、歯車7及び軸受5を潤滑
すべきオイル室9が形成されている。軸受5とロ
ータ2との間にはシール10が設けられている。
シール10と軸受5の間で、ハウジング壁を貫通
して孔11が穿設され、よつて軸受5の両側の圧
力が同一にされる。この場合、シール10は潤滑
油がポンプ作動空間に進入しないようにするため
のものであり、圧縮された空気はこれを通過して
軸受5に達することができる。第1図において、
高圧空気が左側から右側に向かつて軸受5中を流
れれば、潤滑油が右側から軸受5に進入しにくく
なる。孔11を設けることによつて軸受5の両側
の圧力がバランスし、軸受5へオイルがより進入
し易くなる。 An oil chamber 9 for lubricating the gear 7 and the bearing 5 is formed on the right side in FIG. A seal 10 is provided between the bearing 5 and the rotor 2.
Between the seal 10 and the bearing 5, a hole 11 is drilled through the housing wall, so that the pressure on both sides of the bearing 5 is equalized. In this case, the seal 10 prevents lubricating oil from entering the pump working space, and compressed air can pass through it to reach the bearing 5. In Figure 1,
If high-pressure air flows through the bearing 5 from the left side to the right side, it becomes difficult for lubricating oil to enter the bearing 5 from the right side. By providing the hole 11, the pressure on both sides of the bearing 5 is balanced, and oil can more easily enter the bearing 5.
第2図は第1図の左方の軸受5部分を拡大して
詳細に示した図、第3図は第2図の線−に沿
つて見た断面図である。第3図にはロータ2の端
面4とハウジングの対向壁面8との間のクリアラ
ンスが誇張して示されている。このクリアランス
空間と、軸3おにびその軸受を挿入すべき穴14
とは相通じている。軸受5はグリース封入型であ
つて、シール15を具えている。穴14を形成す
べきハウジング壁面には、長手方向に延びる矩形
断面の溝16が形成される。この溝16は軸受5
の長さより長く、従つて、軸受5の両側において
穴14に開口する。この溝16によつて、ロータ
2の端面から形成される高圧空間と軸受5の左側
の空間とが連通され、よつて、軸受1の両側の圧
力が同一になる。 2 is an enlarged detailed view of the left bearing 5 portion of FIG. 1, and FIG. 3 is a sectional view taken along the line - in FIG. 2. In FIG. 3, the clearance between the end surface 4 of the rotor 2 and the opposing wall surface 8 of the housing is exaggerated. This clearance space and the hole 14 into which the shaft 3 and its bearing are inserted.
It is similar to that. The bearing 5 is of the grease filled type and includes a seal 15. A groove 16 with a rectangular cross section extending in the longitudinal direction is formed in the housing wall surface in which the hole 14 is to be formed. This groove 16 is
, and therefore open into holes 14 on both sides of the bearing 5. This groove 16 allows the high pressure space formed from the end face of the rotor 2 to communicate with the space on the left side of the bearing 5, so that the pressure on both sides of the bearing 1 becomes the same.
第4図は第2図の変形例であり、第5図は第4
図の線V−Vに沿つて見た断面図である。この例
では、溝の代わりにハウジング壁内に孔17が設
けられ、この孔17の一端は壁面8に開口し、従
つて、穴14の軸受5右側に通じている。軸受5
の左側には、ハウジング1壁を貫通する孔18が
軸方向の孔17と出会うように設けられ、孔18
の外側には栓19が取付けられる。孔17及び1
8によつて、軸受5の両側の空間が通じられ、両
側の圧力が同一になる。 Figure 4 is a modification of Figure 2, and Figure 5 is a modification of Figure 4.
2 is a cross-sectional view taken along line V-V in the figure; FIG. In this example, instead of a groove, a hole 17 is provided in the housing wall, one end of which opens into the wall surface 8 and thus communicates with the right side of the bearing 5 of the hole 14 . Bearing 5
On the left side of the housing 1, a hole 18 passing through the wall of the housing 1 is provided so as to meet the axial hole 17.
A plug 19 is attached to the outside of the holder. holes 17 and 1
8 communicates the space on both sides of the bearing 5, so that the pressure on both sides is the same.
効 果
以上の説明から明らかなように、軸受の両側の
圧力が同一となつて、グリースを用いた軸受の場
合にはグリースが圧力差によつて軸受から漏れる
のが防止され、軸受にオイル潤滑する場合にはオ
イルが軸受に進入することができる。又、ベーン
式ポンプ等のその他のポンプにおいても、ベーン
等のポンプ作動部材による圧力が軸受の一方側に
作用する場合には、軸受の両側に連通する通路を
設けることによつて軸受の両側にかかる圧力を同
じにすることができる。Effects As is clear from the above explanation, the pressure on both sides of the bearing is the same, and in the case of bearings using grease, the pressure difference prevents grease from leaking from the bearing, and the bearing is lubricated with oil. If so, oil can enter the bearing. In addition, in other pumps such as vane type pumps, when the pressure from the pump operating member such as a vane acts on one side of the bearing, it is possible to prevent pressure on both sides of the bearing by providing a passage communicating with both sides of the bearing. The pressure can be the same.
第1図は本考案を適用したルーツ式ポンプの断
面図、第2図は第1図の左側の軸受部分の拡大
図、第3図は第2図の線−に沿つて見た断面
図、第4図は第2図の変形例を示す図、第5図は
第4図の線−に沿つて見た断面図である。
1……ハウジング、2……ロータ、3……軸。
4……ロータ端面、5……軸受、8……ハウジン
グ壁面、11……孔、14……穴、15,16,
17……孔。
Fig. 1 is a sectional view of a Roots type pump to which the present invention is applied, Fig. 2 is an enlarged view of the bearing portion on the left side of Fig. 1, and Fig. 3 is a sectional view taken along the line - in Fig. 2. 4 is a diagram showing a modification of FIG. 2, and FIG. 5 is a sectional view taken along the line - in FIG. 4. 1...housing, 2...rotor, 3...shaft.
4... Rotor end surface, 5... Bearing, 8... Housing wall surface, 11... Hole, 14... Hole, 15, 16,
17...hole.
Claims (1)
ングに収容され、ハウジングはポンプ作動要素の
端面と対向する壁面及び該壁面から連続して前記
軸を挿入すべき穴を形成する穴壁面とを有し、該
穴壁面には前記軸を支承すべき軸受が配置され、
ハウジングには前記軸受の両側を連通する通路が
形成されて成るポンプの軸支持構造。 A pump operating element and a shaft supporting the pump operating element are housed in a housing, and the housing has a wall surface facing an end surface of the pump operating element and a hole wall surface continuous from the wall surface and forming a hole into which the shaft is inserted. , a bearing for supporting the shaft is arranged on the wall surface of the hole,
A shaft support structure for a pump, wherein a passage is formed in the housing and communicates between both sides of the bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5543483U JPS59160870U (en) | 1983-04-15 | 1983-04-15 | Pump shaft support device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5543483U JPS59160870U (en) | 1983-04-15 | 1983-04-15 | Pump shaft support device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59160870U JPS59160870U (en) | 1984-10-27 |
| JPS632631Y2 true JPS632631Y2 (en) | 1988-01-22 |
Family
ID=30185759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5543483U Granted JPS59160870U (en) | 1983-04-15 | 1983-04-15 | Pump shaft support device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59160870U (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10252622A1 (en) * | 2002-11-11 | 2004-05-27 | Continental Teves Ag & Co. Ohg | Motor pump aggregate for motor vehicle braking system has motor and pump that comprises shaft that is driven by motor and bearings of end of shaft are arranged in reception body that is provided with valves and connection channels |
| JP5540238B2 (en) * | 2010-12-25 | 2014-07-02 | オリオン機械株式会社 | Gear oil lubrication structure of biaxial rotating mechanism |
| JP5719213B2 (en) * | 2011-03-30 | 2015-05-13 | 株式会社ケーヒン | Compressor |
-
1983
- 1983-04-15 JP JP5543483U patent/JPS59160870U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59160870U (en) | 1984-10-27 |
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