WO2013172410A1 - Multistage oil pump - Google Patents

Multistage oil pump Download PDF

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Publication number
WO2013172410A1
WO2013172410A1 PCT/JP2013/063651 JP2013063651W WO2013172410A1 WO 2013172410 A1 WO2013172410 A1 WO 2013172410A1 JP 2013063651 W JP2013063651 W JP 2013063651W WO 2013172410 A1 WO2013172410 A1 WO 2013172410A1
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WO
WIPO (PCT)
Prior art keywords
rotor
rotor case
case
spacer
oil pump
Prior art date
Application number
PCT/JP2013/063651
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French (fr)
Japanese (ja)
Inventor
正人 隈本
智陽 千葉
内記　長彦
Original Assignee
株式会社ミクニ
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by 株式会社ミクニ filed Critical 株式会社ミクニ
Priority to EP13791334.9A priority Critical patent/EP2878822A4/en
Priority to US14/401,598 priority patent/US20150167665A1/en
Priority to CN201380025648.8A priority patent/CN104302917A/en
Publication of WO2013172410A1 publication Critical patent/WO2013172410A1/en

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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
    • 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
    • F04C2/082—Details specially related to intermeshing engagement type machines or pumps
    • 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
    • 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
    • F04C15/06—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
    • 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

Definitions

  • the present invention relates to a multistage oil pump particularly used for automobiles and the like.
  • Patent Document 1 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.
  • the trochoid pump is not casing in the above structure, it cannot be used when the pressure and temperature are high.
  • This invention aims at providing the multistage oil pump which can solve the above-mentioned modification.
  • the multi-stage oil pump of the present invention is a multi-stage oil pump in which two rotors are connected in series in the rotation axis direction, and each of the rotors is partitioned by a spacer portion.
  • the rotor case is housed separately through the spacer, the rotor case has a cylindrical shape, and the spacer portion is integral with the rotor case.
  • the present invention is characterized in that the rotor and the rotor case are iron-based. Further, the present invention is characterized in that the rotor case is fixed to the housing by a positioning pin.
  • the rotor is not housed directly in the housing, but the rotor is housed in the rotor case, and the corresponding rotor case is housed in the housing. I can do it.
  • FIG. 2 is a cross-sectional view taken along line AA in FIG. 1.
  • FIG. 2 is a cross-sectional view taken along line AA in FIG. 1.
  • the multi-stage oil pump 1 includes a housing 2, a cover 3 for closing the housing 2, a rotor case 4 accommodated in the housing 2, and first and second rotors 6, which are accommodated in the rotor case 4 and connected to each other in a row. 7.
  • the housing 2 has a bottomed cylindrical shape and includes a pump discharge port 21.
  • the rotor case 4 has a cylindrical shape, and a central portion in the length direction is partitioned by a spacer 5.
  • one end side partitioned by the spacer 5 is a first rotor case 41 and the other end side is a second rotor case 42.
  • Positioning pins 8 project from one surface and the other surface of the rotor case 4.
  • a first rotor suction port 43 is provided on the side surface of the rotor case 4.
  • 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 whose axis is eccentric with respect to the first rotor case 41.
  • the second rotor case 42 is formed with a circular second rotor accommodating hole 421 whose axis is eccentric with respect to the second rotor case 42.
  • the first rotor accommodation hole 411 and the second rotor accommodation hole 421 are offset in the axis.
  • the spacer 5 is made of an iron-based material. Specifically, iron-copper-carbon (JPMA standard), SMF4030, or the like can be used as the iron-based material.
  • the spacer 5 is provided with an insertion hole 51 of the drive shaft 11, a first rotor discharge port 52, and a second rotor suction port 53.
  • the first rotor discharge port 52 is formed on one surface of the spacer 5
  • the second rotor suction port 53 is formed on the other surface of the spacer 5, and communicates with each other.
  • the side plate 9 is disposed between the second rotor case 42 and the housing 2.
  • the side plate 9 is configured by providing an insertion hole 91 of the drive shaft 11 and a second rotor discharge port 92 on a disk having the same outer diameter as that of the first rotor case 41.
  • the positioning pins 8 protruding from one surface of the spacer 5 are fitted into the housing 2 and the rotor case 4 is joined to the housing 2 as shown in FIG.
  • Positioning pins 8 protruding from the other surface of the spacer 5 are fitted into the cover 3 to join the rotor case 4 to the cover 3.
  • 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.
  • a containment chamber is constructed.
  • the first inner rotor 62 is fixed to the drive shaft 11 and is disposed in the first outer rotor 61 with the axis of the drive shaft 11 aligned with the axis of the first rotor case 41.
  • 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.
  • Oil is supplied from the first rotor suction port 43 to the oil storage chamber of the first rotor 6.
  • 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 the corresponding amount of oil is sucked from the first rotor suction port 43.
  • the oil storage chamber decreases in volume as it approaches the drive shaft 11, and discharges that much oil from the first rotor discharge port 52.
  • Oil is supplied to the oil storage chamber of the second outer rotor 71 from the second rotor suction port 53.
  • 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 discharges the corresponding amount of oil from the second rotor discharge port 92.
  • the oil discharged from the first rotor discharge port 52 by the oil storage chamber of the first rotor 6 is sucked from the second rotor suction port 53 into the oil storage chamber of the second rotor 7. 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.
  • the rotors 6 and 7 are not directly stored in the housing 2, but the rotors 6 and 7 are stored in the rotor case 4 and the corresponding rotor case 4 is stored in the housing 2. It can also be used when the pressure and temperature are high.
  • the thermal expansion can be suppressed and the oil flow accuracy can be improved.
  • the case where the rotors 6 and 7 and the rotor case 4 are made of an iron-based material has been described, but only one of them may be made of an iron-based material.
  • the joining method of the rotor case 4 is arbitrary and is not limited to the one using the positioning pins 8.
  • 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. .
  • the oil may be supplied from the cover 3 through the housing 2 into the oil storage chamber.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Rotary Pumps (AREA)

Abstract

Conventional oil pumps cannot be used when the pressure and the temperature are high. In this oil pump (1), two rotors (6, 7) are connected in series in the direction of the axis of rotation. The rotors (6, 7) are housed separately with a spacer (5) therebetween within a rotor case (4), and the interior of the rotor case is partitioned by mean of the spacer (5). The rotor case (4) forms a cylindrical shape, and the spacer (5) is integral with the rotor case (4). The rotors (6, 7) and the rotor case (4) are iron-based, and are affixed to a housing (2) by means of positioning pins.

Description

多段オイルポンプMultistage oil pump
　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.
特開２００６－１６１６１４号公報JP 2006-161614 A
　しかしながら、上記構造ではトロコイドポンプが、ケーシングされていないため、圧力、温度が高い場合には用いることは出来なかった。 However, since the trochoid pump is not casing in the above structure, it cannot be used when the pressure and temperature are high.
　本発明は、上記改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。 This invention aims at providing the multistage oil pump which can solve the above-mentioned modification.
　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、２つのローターが回転軸方向に直列接続された多段オイルポンプであって、前記各ローターは、内部がスぺーサー部で仕切られたローターケースに、該スペーサーを介して各別に収納され、前記ローターケースは一筒状をなし、前記スペーサー部は前記ローターケースと一体であることを特徴とする。
　また、本発明は、前記ローター及び前記ローターケースは鉄系であることを特徴とする。
　また、本発明は、前記ローターケースは、位置決めピンでハウジングに固定されていることを特徴とする。 In order to solve such a problem, the multi-stage oil pump of the present invention is a multi-stage oil pump in which two rotors are connected in series in the rotation axis direction, and each of the rotors is partitioned by a spacer portion. The rotor case is housed separately through the spacer, the rotor case has a cylindrical shape, and the spacer portion is integral with the rotor case.
Further, the present invention is characterized in that the rotor and the rotor case are iron-based.
Further, the present invention is characterized in that the rotor case is fixed to the housing by a positioning pin.
　本発明によれば、ローターを直接ハウジングの中に収納するのではなく、ローターケース内にローターを収納し、該当ローターケースをハウジング内に収納するので、圧力、温度が高い場合にも用いることは出来る。 According to the present invention, the rotor is not housed directly in the housing, but the rotor is housed in the rotor case, and the corresponding rotor case is housed in the housing. I can do it.
本発明の一実施形態の多段オイルポンプの斜視図である。It is a perspective view of the multistage oil pump of one embodiment of the present invention. 図１の多段オイルポンプをカバー側から見た分解斜視図である。It is the disassembled perspective view which looked at the multistage oil pump of FIG. 1 from the cover side. 図１の多段オイルポンプをハウジング側から見た分解斜視図である。It is the disassembled perspective view which looked at the multistage oil pump of FIG. 1 from the housing side. 図１のＡ－Ａ矢視断面図である。FIG. 2 is a cross-sectional view taken along line AA in FIG. 1. 図１のＡ－Ａ矢視断面図である。FIG. 2 is a cross-sectional view taken along line AA in FIG. 1.
　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、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。 The multi-stage oil pump 1 includes a housing 2, a cover 3 for closing the housing 2, a rotor case 4 accommodated in the housing 2, and first and second rotors 6, which are accommodated in the rotor case 4 and connected to each other in a row. 7.
　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を備えている。ロータケース４は、一筒状をなしており、長さ方向の中央部がスペーサー５で仕切られている。ロータケース４は、スペーサー５で仕切られた一端側が第１ロータケース４１、他端側が第２ロータケース４２となっている。ロータケース４の一面及び他面からはそれぞれ位置決めピン８が突出している。ロータケース４の側面には、第１ロータ吸入ポート４３が設けられている。 The housing 2 has a bottomed cylindrical shape and includes a pump discharge port 21. The rotor case 4 has a cylindrical shape, and a central portion in the length direction is partitioned by a spacer 5. In the rotor case 4, one end side partitioned by the spacer 5 is a first rotor case 41 and the other end side is a second rotor case 42. Positioning pins 8 project from one surface and the other surface of the rotor case 4. A first rotor suction port 43 is provided on the side surface of the rotor case 4.
　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が形成されている。第２ロータケース４２には、第２ロータケース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が形成されている。第１ロータケース４１と第２ロータケース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いる。 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 whose axis is eccentric with respect to the first rotor case 41. The second rotor case 42 is formed with a circular second rotor accommodating hole 421 whose axis is eccentric with respect to the second rotor case 42. In the first rotor case 41 and the second rotor case 42, the first rotor accommodation hole 411 and the second rotor accommodation hole 421 are offset in the axis.
　スペーサー５は、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。 The spacer 5 is made of an iron-based material. Specifically, iron-copper-carbon (JPMA standard), SMF4030, or the like can be used as the iron-based material.
　スペーサー５には、駆動軸１１の挿通孔５１、第１ロータ吐出ポート５２、及び第２ロータ吸入ポート５３が設けられている。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。 The spacer 5 is provided with an insertion hole 51 of the drive shaft 11, a first rotor discharge port 52, and a second rotor suction port 53. 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.
　第２ロータケース４２とハウジング２との間には、サイドプレート９が配置される。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、及び第２ロータ吐出ポート９２を設けて構成されている。 The side plate 9 is disposed between the second rotor case 42 and the housing 2. The side plate 9 is configured by providing an insertion hole 91 of the drive shaft 11 and a second rotor discharge port 92 on a disk having the same outer diameter as that of the first rotor case 41.
　スペーサー５の一面から突出した位置決めピン８は、ハウジング２に嵌合し、図６に示すように、ローターケース４をハウジング２に接合している。スペーサー５の他面から突出した位置決めピン８は、カバー３に嵌合し、ローターケース４をカバー３に接合している。 The positioning pins 8 protruding from one surface of the spacer 5 are fitted into the housing 2 and the rotor case 4 is joined to the housing 2 as shown in FIG. Positioning pins 8 protruding from the other surface of the spacer 5 are fitted into the cover 3 to join the rotor case 4 to the cover 3.
　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及びカバー３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, four oils 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 cover 3 are provided. A containment chamber is constructed.
　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 with the axis of the drive shaft 11 aligned 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、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 second outer rotor 71 and the second inner rotor 72, 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 side plate 9. Is configured.
　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、第１ロータ吸入ポート４３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、その分のオイルを第１ロータ吸入ポート４３から吸入する。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、その分のオイルを第１ロータ吐出ポート５２から吐出する。 Oil is supplied from the first rotor suction port 43 to the oil storage chamber of the first rotor 6. 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 the corresponding amount of oil is sucked from the first rotor suction port 43. In addition, the oil storage chamber decreases in volume as it approaches the drive shaft 11, and discharges that much oil from 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、その分のオイルを第２ロータ吐出ポート９２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 discharges the corresponding amount of oil from the second rotor discharge port 92.
　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 from the second rotor suction port 53 into the oil storage chamber of the second rotor 7. 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、ローター６，７を直接ハウジング２の中に収納するのではなく、ローターケース４内にローター６，７を収納し、該当ローターケース４をハウジング２内に収納するので、圧力、温度が高い場合にも用いることは出来る。 According to the present embodiment, the rotors 6 and 7 are not directly stored in the housing 2, but the rotors 6 and 7 are stored in the rotor case 4 and the corresponding rotor case 4 is stored in the housing 2. It can also be used when the pressure and temperature are high.
　また、本実施形態によれば、ローター６，７及びローターケース４が鉄系であることから、熱膨張を抑えてオイルの流量精度を向上させられる。 Further, according to this embodiment, since the rotors 6 and 7 and the rotor case 4 are iron-based, the thermal expansion can be suppressed and the oil flow accuracy can be improved.
　上記実施形態では、ローター６，７及びローターケース４が鉄系の材料で形成されていた場合について説明したが、一方のみが鉄系の材料で形成されていてもよい。また、ローターケース４の接合方法は任意であり、位置決めピン８を用いたものには限定されない。 In the above embodiment, the case where the rotors 6 and 7 and the rotor case 4 are made of an iron-based material has been described, but only one of them may be made of an iron-based material. Moreover, the joining method of the rotor case 4 is arbitrary and is not limited to the one using the positioning pins 8.
　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
４３　　第１ロータ吸入ポート
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
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　　　位置決めピン
９　　　サイドプレート
９１　　挿通孔
９２　　第２ロータ吐出ポート
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 43 First rotor suction port 5 Spacer 51 Insertion hole 52 First rotor discharge port 53 Second 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 Positioning pin 9 Side plate 91 Insertion hole 92 Second rotor discharge port 94 Fitting hole

Claims (3)

  1. 　２つのローターが回転軸方向に直列接続された多段オイルポンプであって、
    前記各ローターは、内部がスぺーサー部で仕切られたローターケースに、該スペーサーを介して各別に収納され、
    前記ローターケースは一筒状をなし、
    前記スペーサー部は前記ローターケースと一体であることを特徴とする多段オイルポンプ。     A multi-stage oil pump in which two rotors are connected in series in the direction of the rotation axis,
    Each of the rotors is housed separately in a rotor case, the interior of which is partitioned by a spacer portion, via the spacer,
    The rotor case has a cylindrical shape,
    The multi-stage oil pump, wherein the spacer portion is integral with the rotor case.
  2. 　前記ローター及び前記ローターケースは鉄系であることを特徴とする請求項１記載の多段オイルポンプ。 The multi-stage oil pump according to claim 1, wherein the rotor and the rotor case are iron-based.
  3. 　前記ローターケースは、位置決めピンでハウジングに固定されていることを特徴とする請求項1又は２に記載の多段オイルポンプ。 The multi-stage oil pump according to claim 1 or 2, wherein the rotor case is fixed to the housing by a positioning pin.
PCT/JP2013/063651 2012-05-17 2013-05-16 Multistage oil pump WO2013172410A1 (en)

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EP13791334.9A EP2878822A4 (en) 2012-05-17 2013-05-16 Multistage oil pump
US14/401,598 US20150167665A1 (en) 2012-05-17 2013-05-16 Multistage oil pump
CN201380025648.8A CN104302917A (en) 2012-05-17 2013-05-16 Multistage oil pump

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JP2012113481A JP2013238210A (en) 2012-05-17 2012-05-17 Multistage oil pump

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CN104481630A (en) * 2014-12-12 2015-04-01 隆鑫通用动力股份有限公司 Driving pin fixed engine oil pump
CN104595054A (en) * 2014-12-12 2015-05-06 隆鑫通用动力股份有限公司 Crankcase cover with fixed driving pin
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CN104728584A (en) * 2013-12-19 2015-06-24 北汽福田汽车股份有限公司 Engine and rotor type engine oil pump for same
CN104863846A (en) * 2014-02-25 2015-08-26 Lg伊诺特有限公司 Electric pump
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CN104481630A (en) * 2014-12-12 2015-04-01 隆鑫通用动力股份有限公司 Driving pin fixed engine oil pump
CN104595054A (en) * 2014-12-12 2015-05-06 隆鑫通用动力股份有限公司 Crankcase cover with fixed driving pin

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CN104302917A (en) 2015-01-21
EP2878822A4 (en) 2016-03-30
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US20150167665A1 (en) 2015-06-18
EP2878822A1 (en) 2015-06-03

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