JP6027768B2 - Multistage oil pump - Google Patents
Multistage oil pump Download PDFInfo
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- JP6027768B2 JP6027768B2 JP2012113479A JP2012113479A JP6027768B2 JP 6027768 B2 JP6027768 B2 JP 6027768B2 JP 2012113479 A JP2012113479 A JP 2012113479A JP 2012113479 A JP2012113479 A JP 2012113479A JP 6027768 B2 JP6027768 B2 JP 6027768B2
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- rotor
- spacer
- case
- oil pump
- rotor case
- Prior art date
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- 125000006850 spacer group Chemical group 0.000 claims description 41
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 6
- 230000005484 gravity Effects 0.000 claims description 5
- 238000003860 storage Methods 0.000 description 15
- 230000004308 accommodation Effects 0.000 description 8
- 230000002093 peripheral effect Effects 0.000 description 6
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 238000010926 purge Methods 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003566 sealing material Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- QPBIPRLFFSGFRD-UHFFFAOYSA-N [C].[Cu].[Fe] Chemical compound [C].[Cu].[Fe] QPBIPRLFFSGFRD-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000007528 sand casting Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C11/00—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations
- F04C11/001—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations of similar working principle
- F04C11/003—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations of similar working principle having complementary function
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
- F01C21/10—Outer members for co-operation with rotary pistons; Casings
- F01C21/104—Stators; Members defining the outer boundaries of the working chamber
- F01C21/108—Stators; Members defining the outer boundaries of the working chamber with an axial surface, e.g. side plates
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C11/00—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations
- F04C11/001—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations of similar working principle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
- F04C15/0061—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
- F04C15/0065—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions for eccentric movement
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/06—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
- F04C2/102—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member the two members rotating simultaneously around their respective axes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
- F04C2/103—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member one member having simultaneously a rotational movement about its own axis and an orbital movement
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/30—Casings or housings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2201/00—Metals
- F05C2201/02—Light metals
- F05C2201/021—Aluminium
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
- Rotary Pumps (AREA)
Description
本発明は、特に自動車等に用いられる多段オイルポンプに関する。 The present invention relates to a multistage oil pump particularly used for automobiles and the like.
従来より、複数のローターが直列接続された多段オイルポンプが提供されている（例えば、特許文献１）。当該図１に記載の如く、トロコイドポンプ（ローター）４，５は有底筒状のハウジング本体１に直接収納されている。 Conventionally, a multistage oil pump in which a plurality of rotors are connected in series has been provided (for example, Patent Document 1). As shown in FIG. 1, the trochoid pumps (rotors) 4 and 5 are directly housed in a bottomed cylindrical housing body 1.
しかしながら、上記構造では全て鉄系材料の為、重量が大きいという問題点があった。 However, the above structure has a problem that it is heavy because it is an iron-based material.
本発明は、上記課題を解決できる多段オイルポンプを提供することを目的とする。 An object of this invention is to provide the multistage oil pump which can solve the said subject.
このような課題を解決するために、本発明の多段オイルポンプは、複数のローターが直列接続された多段オイルポンプであって、軸方向に接続されたローターケースに前記ローターが収容され、前記ローターケースの間に前記スペーサーが介在されて、該スペーサーと各前記ローターケースとがダウエルピンにより接合され、前記スペーサーは、前記ローターよりも比重が小さい材料であり、前記スペーサーの外径は前記ローターケースの外径より小さく、前記ローターケースの内周部には前記スペーサーの外周部に嵌め合わされる段差が設けられ、前記ローターケース及び前記スペーサーの嵌合部に前記ローターケースの外側から前記ダウエルピンが止められて、前記ローターケースと前記スペーサーとの間での回り止めが行われていることを特徴とする。
また、本発明は、前記ローターは鉄系で、前記スペーサーはアルミ系であることを特徴とする。
To solve such problems, a multi-stage oil pump of the present invention is a multi-stage oil pump in which a plurality of rotors are connected in series, it is accommodated before km Ta in rotor case connected to the axial direction , the spacer is interposed between the rotor casing, and said spacer and each of the rotor casing are joined by dowel pins, the spacer is a material specific gravity is smaller than the rotor, the outer diameter of the spacer is the The inner diameter of the rotor case is smaller than the outer diameter of the rotor case, and a step to be fitted to the outer periphery of the spacer is provided. and is stopped, the have detent between the rotor case and the spacer is made Turkey The features.
Further, the present invention is characterized in that the rotor is iron-based and the spacer is aluminum-based .
本発明によれば、前記スペーサーは、ローターよりも比重が小さい材料であるので、軽量化することが出来る。 According to the present invention, since the spacer is a material having a specific gravity smaller than that of the rotor, the weight can be reduced.
以下、図面を参照して、本発明の最良の形態を説明する。 Hereinafter, the best mode of the present invention will be described with reference to the drawings.
多段オイルポンプ１は、図１〜６に示すように、ハウジング２と、ハウジング２を塞ぐカバー３と、ハウジング２に収納されたロータケース４と、ロータケース４に収容されて互いが列接続された第１，第２ローター６，７とを備えている。 As shown in FIGS. 1 to 6, the multistage oil pump 1 includes a housing 2, a cover 3 that closes the housing 2, a rotor case 4 accommodated in the housing 2, and a rotor case 4 that is accommodated in a row. The first and second rotors 6 and 7 are provided.
ハウジング２は、有底筒状を呈しており、ポンプ吐出ポート２１と嵌合孔２２とを備えている。カバー３には、嵌合孔３１が形成されている。ロータケース４は、第１ロータケース４１と第２ロータケース４２とに軸方向に分割されており、第１ロータケース４１と第２ロータケース４２とがスペーサー５で仕切られている。 The housing 2 has a bottomed cylindrical shape and includes a pump discharge port 21 and a fitting hole 22. A fitting hole 31 is formed in the cover 3. The rotor case 4 is divided into a first rotor case 41 and a second rotor case 42 in the axial direction, and the first rotor case 41 and the second rotor case 42 are partitioned by a spacer 5.
第１ロータケース４１には第１ローター６が、第２ロータケース４２には第２ローター７がそれぞれ収容されている。第１ロータケース４１には、第１ロータケース４１に対して軸心を偏心させた円形の第１ロータ収容孔４１１と、嵌合孔４１２とが形成されている。第２ローターケース４２には、第２ローターケース４２に対して軸心を偏心させた円形の第２ロータ収容孔４２１と、嵌合孔４２２とが形成されている。第１ロータケース４１と第２ローターケース４２とは、第１ロータ収容孔４１１と第２ロータ収容孔４２１とが軸心をオフセットさせて、ハウジング２内に配置される。 The first rotor case 41 accommodates the first rotor 6, and the second rotor case 42 accommodates the second rotor 7. The first rotor case 41 is formed with a circular first rotor accommodation hole 411 having a shaft eccentric with respect to the first rotor case 41 and a fitting hole 412. The second rotor case 42 is formed with a circular second rotor accommodation hole 421 having a shaft eccentric with respect to the second rotor case 42 and a fitting hole 422. The first rotor case 41 and the second rotor case 42 are disposed in the housing 2 with the first rotor accommodation hole 411 and the second rotor accommodation hole 421 offset in the axis.
スペーサー５は、第１ロータケース４１及び第２ローターケース４２と同じ外径の円板に駆動軸１１の挿通孔５１、第１ロータ吐出ポート５２、第２ロータ吸入ポート５３、及び第１ロータ吸入ポート５４を設けて構成されている。第１ロータ吐出ポート５２はスペーサー５の一面に、第２ロータ吸入ポート５３はスペーサー５の他面にそれぞれ形成されており、互いに連通している。スペーサー５の一面及び他面からはそれぞれダウエルピン８が突出している。ダウエルピン８は、ＳＵＪ（高炭素軸受鋼）で形成されている。 The spacer 5 is a disc having the same outer diameter as the first rotor case 41 and the second rotor case 42, and the insertion hole 51 of the drive shaft 11, the first rotor discharge port 52, the second rotor suction port 53, and the first rotor suction A port 54 is provided. The first rotor discharge port 52 is formed on one surface of the spacer 5, and the second rotor suction port 53 is formed on the other surface of the spacer 5, and communicates with each other. Dowel pins 8 project from one side and the other side of the spacer 5, respectively. The dowel pin 8 is made of SUJ (high carbon bearing steel).
スペーサー５は、第１，第２ローター６，７よりも比重が小さいアルミ系の材料で形成されている。また、アルミ系の材料としては、具体的には、ＡＤＣ１２，ＡＤＣ１０，ＡＤＣ１４（ダイカスト用）、ＡＣ２Ａ，ＡＣ４Ｂ（砂型鋳物用）、Ａ２０１４，Ａ２０１７等を用いることができる。 The spacer 5 is made of an aluminum material having a specific gravity smaller than that of the first and second rotors 6 and 7. As the aluminum-based material, specifically, ADC12, ADC10, ADC14 (for die casting), AC2A, AC4B (for sand casting), A2014, A2017 and the like can be used.
第１ロータケース４１とカバー３との間には、サイドプレート９及びシール材１２が第１ロータケース４１側からこの順で配置される。サイドプレート９は、第１ロータケース４１と同じ外径の円板に駆動軸１１の挿通孔９１、パージポート９２、及び嵌合孔９４を設けて構成されている。シール材１２は、カバー３とサイドプレート９との間をシールする。 Between the 1st rotor case 41 and the cover 3, the side plate 9 and the sealing material 12 are arrange | positioned in this order from the 1st rotor case 41 side. The side plate 9 is configured by providing an insertion hole 91, a purge port 92, and a fitting hole 94 of the drive shaft 11 on a disk having the same outer diameter as the first rotor case 41. The sealing material 12 seals between the cover 3 and the side plate 9.
スペーサー５の一面から突出したダウエルピン８は、第２ローターケース４２の嵌合孔４２２及びハウジング２の嵌合孔２２に嵌合し、図７に示すように、第２ローターケース４２及びハウジング２をスペーサー５に接合している。スペーサー５の他面から突出したダウエルピン８は、第１ローターケース４１の嵌合孔４１２、サイドプレート９の嵌合孔９４、及びカバー３の嵌合孔３１に嵌合し、第１ローターケース４１、サイドプレート９、及びカバー３をスペーサー５に接合している。 The dowel pin 8 protruding from one surface of the spacer 5 is fitted into the fitting hole 422 of the second rotor case 42 and the fitting hole 22 of the housing 2, and the second rotor case 42 and the housing 2 are connected as shown in FIG. 7. It is joined to the spacer 5. The dowel pin 8 protruding from the other surface of the spacer 5 is fitted into the fitting hole 412 of the first rotor case 41, the fitting hole 94 of the side plate 9, and the fitting hole 31 of the cover 3. The side plate 9 and the cover 3 are joined to the spacer 5.
第１ローター６は、第１アウターローター６１の内側に第１インナーローター６２を配置して構成されており、鉄系の材料で形成されている。鉄系の材料としては、具体的には、鉄−銅−炭素系（ＪＰＭＡ規格）、ＳＭＦ４０３０等を用いることができる。第１アウターローター６１は、第１ロータ収容孔４１１の内径とほぼ等しい外径を有した円板にオイル充填孔６１１を設けて構成されており、第１ロータ収容孔４１１内に回転自在に配置されている。オイル充填孔６１１は、第１アウターローター６１と軸心を一致させて配置されている。 The first rotor 6 is configured by disposing a first inner rotor 62 inside the first outer rotor 61, and is formed of an iron-based material. Specifically, iron-copper-carbon (JPMA standard), SMF4030, or the like can be used as the iron-based material. The first outer rotor 61 is configured by providing an oil filling hole 611 in a disc having an outer diameter substantially equal to the inner diameter of the first rotor accommodation hole 411, and is rotatably arranged in the first rotor accommodation hole 411. Has been. The oil filling hole 611 is disposed so that the first outer rotor 61 and the shaft center coincide with each other.
第１アウターローター６１と第１インナーローター６２との間には、オイル充填孔６１１の内周面と、第１インナーローター６２の外周面と、スペーサー５及びサイドプレート９とで仕切られた４つのオイル収容室が構成されている。 Between the first outer rotor 61 and the first inner rotor 62, there are four partitions partitioned by the inner peripheral surface of the oil filling hole 611, the outer peripheral surface of the first inner rotor 62, the spacer 5 and the side plate 9. An oil storage chamber is configured.
第１インナーローター６２は、駆動軸１１に固定されており、駆動軸１１の軸心を第１ロータケース４１の軸心と一致させて、第１アウターローター６１内に配置されている。 The first inner rotor 62 is fixed to the drive shaft 11 and is disposed in the first outer rotor 61 such that the axis of the drive shaft 11 coincides with the axis of the first rotor case 41.
第２ローター７は、第２アウターローター７１の内側に第２インナーローター７２を配置して構成されている。第２アウターローター７１は、第１アウターローター６１と同様の形状を有しており、第２ロータ収容孔４２１内に回転自在に配置されている。第２インナーローター７２は、第１インナーローター６２と同様の形状を有しており、駆動軸１１の軸心を第２ローターケース４２の軸心と一致させて、第２アウターローター７１内に配置されている。 The second rotor 7 is configured by arranging a second inner rotor 72 inside the second outer rotor 71. The second outer rotor 71 has the same shape as the first outer rotor 61 and is rotatably disposed in the second rotor accommodation hole 421. The second inner rotor 72 has the same shape as the first inner rotor 62 and is arranged in the second outer rotor 71 such that the axis of the drive shaft 11 coincides with the axis of the second rotor case 42. Has been.
第２アウターローター７１と第２インナーローター７２との間には、オイル充填孔６１１の内周面と、第２インナーローター７２の外周面と、ハウジング２とで仕切られた４つのオイル収容室が構成されている。 Between the second outer rotor 71 and the second inner rotor 72, there are four oil storage chambers partitioned by the inner peripheral surface of the oil filling hole 611, the outer peripheral surface of the second inner rotor 72, and the housing 2. It is configured.
次に、多段オイルポンプ１の組立方法を説明する。
まず、駆動軸１１をスペーサー５に挿通させてピンで位置決めし、インナーロータを駆動軸１１に組み付け、インナーロータ６２，７２にアウターロータ６１，７１を嵌め合わせる。続いて、スペーサー５にダウエルピン８を取り付けて、スペーサー５の一面及び他面にロータケース４１，４２を組み付け、更に第２ロータケース４２にサイドプレート９を組み付ける。このようにして仮組みをした後、ハウジング２内に収容し、カバー３をハウジング２内に取り付ける。
Next, a method for assembling the multistage oil pump 1 will be described.
First, the drive shaft 11 is inserted into the spacer 5 and positioned with a pin, the inner rotor is assembled to the drive shaft 11, and the outer rotors 61 and 71 are fitted to the inner rotors 62 and 72. Subsequently, the dowel pins 8 are attached to the spacer 5, the rotor cases 41 and 42 are assembled to one surface and the other surface of the spacer 5, and the side plate 9 is assembled to the second rotor case 42. After the temporary assembly as described above, the cover 3 is accommodated in the housing 2 and the cover 3 is attached in the housing 2.
次に、多段オイルポンプ１の動作を説明する。 Next, the operation of the multistage oil pump 1 will be described.
第１ローター６のオイル収容室には、図８に示すように、第１ロータ吸入ポート５４からオイルが供給されている。駆動軸１１が回転すると、第１アウターローター６１が第１インナーローター６２により駆動軸１１の回転方向に回転させられ、オイル収容室も駆動軸１１の回りを移動する。オイル収容室は、駆動軸１１から遠ざかるのに伴い容積を増大させ、第１ロータ吸入ポート５４からその分のオイルを吸入する。また、オイル収容室は、駆動軸１１に近づくのに伴い容積を減少させ、その分のオイルをパージポート９２と第１ロータ吐出ポート５２から吐出する。 As shown in FIG. 8, oil is supplied to the oil storage chamber of the first rotor 6 from the first rotor suction port 54. When the drive shaft 11 rotates, the first outer rotor 61 is rotated in the rotation direction of the drive shaft 11 by the first inner rotor 62, and the oil storage chamber also moves around the drive shaft 11. The oil storage chamber increases in volume as it moves away from the drive shaft 11, and sucks that much oil from the first rotor suction port 54. Further, the oil storage chamber decreases in volume as it approaches the drive shaft 11, and the corresponding amount of oil is discharged from the purge port 92 and the first rotor discharge port 52.
第２アウターローター７１のオイル収容室には、第２ロータ吸入ポート５３からオイルが供給されている。駆動軸１１が回転すると、第２アウターローター７１が第２インナーローター７２により駆動軸１１の回転方向に回転させられ、オイル収容室も駆動軸１１の回りを移動する。オイル収容室は、駆動軸１１から遠ざかるのに伴い容積を増大させ、第２ロータ吸入ポート５３からその分のオイルを吸入する。また、オイル収容室は、駆動軸１１に近づくのに伴い容積を減少させ、その分のオイルをオイル吐出ポート２１から吐出する。 Oil is supplied to the oil storage chamber of the second outer rotor 71 from the second rotor suction port 53. When the drive shaft 11 rotates, the second outer rotor 71 is rotated in the rotation direction of the drive shaft 11 by the second inner rotor 72, and the oil storage chamber also moves around the drive shaft 11. The oil storage chamber increases in volume as it moves away from the drive shaft 11, and sucks that much oil from the second rotor suction port 53. The oil storage chamber decreases in volume as it approaches the drive shaft 11, and the oil corresponding to that volume is discharged from the oil discharge port 21.
第１ローター６のオイル収容室が第１ロータ吐出ポート５２から吐出させたオイルは、第２ローター７のオイル収容室に第２ロータ吸入ポート５３から吸入される。第１ロータ収容孔４１１が第２ロータ収容孔４２１に対してオフセットされていることから、第１ローター６のオイル収容室が容積を増大させるのに伴い、第２ローター７のオイル収容室が容積を減少させる。このため、第１ロータ吐出ポート５２から吐出されたオイルは、容積をを増大させる第２ローター７のオイル収容室により、そのまま第２ロータ吸入ポート５３から吸入される。 The oil discharged from the first rotor discharge port 52 by the oil storage chamber of the first rotor 6 is sucked into the oil storage chamber of the second rotor 7 from the second rotor suction port 53. Since the first rotor accommodating hole 411 is offset with respect to the second rotor accommodating hole 421, the oil accommodating chamber of the second rotor 7 increases in volume as the oil accommodating chamber of the first rotor 6 increases in volume. Decrease. Therefore, the oil discharged from the first rotor discharge port 52 is directly sucked from the second rotor suction port 53 by the oil storage chamber of the second rotor 7 that increases the volume.
本実施形態によれば、スペーサー５がローター６，７よりも比重が小さい材料であるので、軽量化することが出来る。 According to the present embodiment, since the spacer 5 is a material having a specific gravity smaller than that of the rotors 6 and 7, the weight can be reduced.
また、本実施形態によれば、ローター６，７が鉄系で、スペーサー５がアルミ系であることから、ロータ６，７とスペーサー５との間で焼き付きが生じるのを抑えられる。 Further, according to this embodiment, since the rotors 6 and 7 are iron-based and the spacer 5 is aluminum-based, occurrence of seizure between the rotors 6 and 7 and the spacer 5 can be suppressed.
上記実施形態では、スペーサー５がアルミ系である場合について説明したが、スペーサー５がマグネシウム系であってもよい。また、スペーサー５とローターケース４１，４２とのダウエルピン８での接合方法は任意であり、例えば、スペーサー５の外径をロータケース４１，４２の外径より小さくして、ロータケース４１，４２の内周部にはスペーサー５の外周部に嵌め合わされる段差を設け、ロータケース４１，４２の外側から両者の嵌合部にダウエルピン８等のピンを止めて、ロータケース４１，４２とスペーサー５との間での回り止めを行う構成としてもよい。 In the above embodiment, the case where the spacer 5 is made of aluminum has been described. However, the spacer 5 may be made of magnesium. The joining method of the spacer 5 and the rotor cases 41 and 42 with the dowel pins 8 is arbitrary. For example, the outer diameter of the spacer 5 is made smaller than the outer diameter of the rotor cases 41 and 42, The inner peripheral portion is provided with a step to be fitted to the outer peripheral portion of the spacer 5, and the pins such as the dowel pins 8 are fixed to the fitting portions of both from the outside of the rotor cases 41, 42, so that the rotor cases 41, 42 and the spacer 5 It is good also as a structure which performs rotation prevention between.
また、上記実施形態では、ロータケース４の側面のスペーサー５側から第１アウターローター６１内のオイル収容室にオイルが供給された場合について説明したが、カバー３側から供給される構成としても良い。また、カバー３からハウジング２を通してオイルがオイル収容室内に供給される構成としてもよい。 Moreover, although the said embodiment demonstrated the case where oil was supplied to the oil storage chamber in the 1st outer rotor 61 from the spacer 5 side of the side surface of the rotor case 4, it is good also as a structure supplied from the cover 3 side. . Alternatively, the oil may be supplied from the cover 3 through the housing 2 into the oil storage chamber.
１ 多段オイルポンプ
１１ 駆動軸
１２ シール材
２ ハウジング
２１ ポンプ吐出ポート
２２ 嵌合孔
３ カバー
３１ 嵌合孔
４ ロータケース
４１ 第１ロータケース
４１１ 第１ロータ収容孔
４１２ 嵌合孔
４２ 第２ロータケース
４２１ 第２ロータ収容孔
４２２ 嵌合孔
５ スペーサー
５１ 挿通孔
５２ 第１ロータ吐出ポート
５３ 第２ロータ吸入ポート
５４ 第１ロータ吸入ポート
６ 第１ローター
６１ 第１アウターローター
６１１ オイル充填孔
６２ 第１インナーローター
７ 第２ローター
７１ 第２アウターローター
７１１ オイル充填孔
７２ 第２インナーローター
８ ダウエルピン
９ サイドプレート
９１ 挿通孔
９２ パージポート
９４ 嵌合孔
DESCRIPTION OF SYMBOLS 1 Multistage oil pump 11 Drive shaft 12 Seal material 2 Housing 21 Pump discharge port 22 Fitting hole 3 Cover 31 Fitting hole 4 Rotor case 41 First rotor case 411 First rotor accommodation hole 412 Fitting hole 42 Second rotor case 421 Second rotor housing hole 422 Fitting hole 5 Spacer 51 Insertion hole 52 First rotor discharge port 53 Second rotor suction port 54 First rotor suction port 6 First rotor 61 First outer rotor 611 Oil filling hole 62 First inner rotor 7 Second rotor 71 Second outer rotor 711 Oil filling hole 72 Second inner rotor 8 Dowel pin 9 Side plate 91 Insertion hole 92 Purge port 94 Fitting hole
Claims (2)
軸方向に接続されたローターケースに前記ローターが収容され、
前記ローターケースの間に前記スペーサーが介在されて、該スペーサーと各前記ローターケースとがダウエルピンにより接合され、
前記スペーサーは、前記ローターよりも比重が小さい材料であり、
前記スペーサーの外径は前記ローターケースの外径より小さく、
前記ローターケースの内周部には前記スペーサーの外周部に嵌め合わされる段差が設けられ、
前記ローターケース及び前記スペーサーの嵌合部に前記ローターケースの外側から前記ダウエルピンが止められて、前記ローターケースと前記スペーサーとの間での回り止めが行われていることを特徴とする多段オイルポンプ。 A multi-stage oil pump in which a plurality of rotors are connected in series,
Axially connected before km Ta in the rotor case was is housed,
The spacer is interposed between the rotor cases, the spacers and the rotor cases are joined by dowel pins,
Wherein the spacer is a material specific gravity is smaller than the rotor,
The outer diameter of the spacer is smaller than the outer diameter of the rotor case,
The inner periphery of the rotor case is provided with a step fitted to the outer periphery of the spacer,
Said from the outside of the rotor case is stopped is the dowel pin in the fitting portion of the rotor case and the spacer, multistage oil pump, wherein Rukoto detent taking place between the said spacer and the rotor case .
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012113479A JP6027768B2 (en) | 2012-05-17 | 2012-05-17 | Multistage oil pump |
| CN201380025650.5A CN104302918A (en) | 2012-05-17 | 2013-05-16 | Multistage oil pump |
| US14/401,596 US20150118087A1 (en) | 2012-05-17 | 2013-05-16 | Multistage oil pump |
| EP13791598.9A EP2868927A4 (en) | 2012-05-17 | 2013-05-16 | Multistage oil pump |
| PCT/JP2013/063649 WO2013172409A1 (en) | 2012-05-17 | 2013-05-16 | Multistage oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012113479A JP6027768B2 (en) | 2012-05-17 | 2012-05-17 | Multistage oil pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2013238209A JP2013238209A (en) | 2013-11-28 |
| JP6027768B2 true JP6027768B2 (en) | 2016-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2012113479A Active JP6027768B2 (en) | 2012-05-17 | 2012-05-17 | Multistage oil pump |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20150118087A1 (en) |
| EP (1) | EP2868927A4 (en) |
| JP (1) | JP6027768B2 (en) |
| CN (1) | CN104302918A (en) |
| WO (1) | WO2013172409A1 (en) |
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|---|---|---|---|---|
| CN114846726A (en) * | 2019-12-23 | 2022-08-02 | Lg伊诺特有限公司 | Motor |
| CN113586437B (en) * | 2021-08-20 | 2023-01-10 | 宁波开发区安德鲁精铸有限公司 | Oil pump isolation plate and machining process thereof |
| US11795948B2 (en) | 2022-01-21 | 2023-10-24 | Hamilton Sundstrand Corporation | Stacked gerotor pump pressure pulsation reduction |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB596064A (en) * | 1945-07-17 | 1947-12-24 | Stothert & Pitt Ltd | Improvements in or relating to rotary pumps |
| US3694113A (en) * | 1971-01-12 | 1972-09-26 | Curtiss Wright Corp | Multi-unit rotary mechanism |
| JPS6252219A (en) * | 1985-08-31 | 1987-03-06 | Shimadzu Corp | Operating shaft |
| JPH06323261A (en) * | 1993-05-18 | 1994-11-22 | Honda Motor Co Ltd | Oil pump |
| JP3635671B2 (en) * | 1993-12-10 | 2005-04-06 | ユニシア ジェーケーシー ステアリングシステム株式会社 | Double cartridge type oil pump |
| JPH1122656A (en) * | 1997-07-04 | 1999-01-26 | Matsushita Electric Ind Co Ltd | Solution pump for absorption heat pump and manufacture thereof |
| US6123526A (en) * | 1998-09-18 | 2000-09-26 | Industrial Technology Research Institute | Multistage pump and method for assembling the pump |
| US7037085B1 (en) * | 2003-03-03 | 2006-05-02 | Stark Patricia A | Dual gear single outlet material pump and method of constructing such a pump |
| JP2006161614A (en) | 2004-12-03 | 2006-06-22 | Hitachi Ltd | Tandem type trochoid pump |
| JP2006170149A (en) * | 2004-12-17 | 2006-06-29 | Hitachi Ltd | Tandem type oil pump |
| WO2006075363A1 (en) * | 2005-01-12 | 2006-07-20 | Mitsubishi Materials Pmg Corporation | Inner rotor for internal gear pump |
| CN101446286B (en) * | 2008-10-13 | 2010-11-03 | 镇江大力液压马达有限责任公司 | Modular internal gear pump or motor |
-
2012
- 2012-05-17 JP JP2012113479A patent/JP6027768B2/en active Active
-
2013
- 2013-05-16 US US14/401,596 patent/US20150118087A1/en not_active Abandoned
- 2013-05-16 WO PCT/JP2013/063649 patent/WO2013172409A1/en active Application Filing
- 2013-05-16 EP EP13791598.9A patent/EP2868927A4/en not_active Withdrawn
- 2013-05-16 CN CN201380025650.5A patent/CN104302918A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| EP2868927A4 (en) | 2016-03-09 |
| EP2868927A1 (en) | 2015-05-06 |
| JP2013238209A (en) | 2013-11-28 |
| CN104302918A (en) | 2015-01-21 |
| US20150118087A1 (en) | 2015-04-30 |
| WO2013172409A1 (en) | 2013-11-21 |
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