KR20000067166A - Duplication type oil pump - Google Patents

Duplication type oil pump Download PDF

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Publication number
KR20000067166A
KR20000067166A KR1019990014734A KR19990014734A KR20000067166A KR 20000067166 A KR20000067166 A KR 20000067166A KR 1019990014734 A KR1019990014734 A KR 1019990014734A KR 19990014734 A KR19990014734 A KR 19990014734A KR 20000067166 A KR20000067166 A KR 20000067166A
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South Korea
Prior art keywords
oil
casing
vane
rotor
cavity
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KR1019990014734A
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Korean (ko)
Inventor
이승춘
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이승춘
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Priority to KR1019990014734A priority Critical patent/KR20000067166A/en
Publication of KR20000067166A publication Critical patent/KR20000067166A/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
    • F04C2/30—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C2/34—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members
    • F04C2/344—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • 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
    • F04C15/0088—Lubrication

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)

Abstract

PURPOSE: A hydraulic pump is provided to achieve an increased amount of oil delivery, and an improved efficiency of fluid delivery by preventing oil leakage between a vane and a casing. CONSTITUTION: A hydraulic pump comprises a casing(10), a rotor(20), a vane(30), and inner and outer covers. The casing has a cavity and oil inlet passages(11) of large diameter and oil outlet passages(12) of small diameter. The rotor is disposed within the cavity of the casing and compresses oil by rotating as being spline-coupled to a driving shaft(61). The vane is installed within a vane groove(21) formed at the rotor. The covers are installed at both ends of the casing with an O-ring interposed between the casing and the covers so as to prevent leakage of oil. The cavity of the casing is formed as ellipsoidal and has two inlet passages and outlet passages, respectively. The inner and outer covers has arc-shaped oil supply portions communicated to an inner end of the vane groove. The oil supply portions receive oil from the oil outlet passage through an oil channel formed at the casing and the covers.

Description

이연식 유압펌프 { Duplication type oil pump }Duplex type oil pump

본 발명은 회전력을 이용하여 유체를 압송하는 유압펌프에 관한 것으로서, 입출구가 각각 2개씩 형성되어 유체를 이중으로 압송함과 동시에 로터에 설치된 베인에 압유를 공급하여 유체압축시 유체가 저압부로 누설되지 않도록 한 이연식 유압펌프에 관한 것이다.The present invention relates to a hydraulic pump for pumping fluid by using a rotational force, and two inlets and outlets are formed, respectively, to double-feed the fluid and simultaneously supply pressure oil to the vane installed in the rotor so that the fluid does not leak to the low pressure part when the fluid is compressed. It relates to a dehydration hydraulic pump.

일반적으로 유압펌프는 구동축을 통해 전달된 회전력으로 로터를 회전시켜 유체를 압송하는 장치이다. 따라서, 통상 유압펌프에서는 유입통로의 직경이 배출통로의 직경에 비해 크게 형성된다.In general, the hydraulic pump is a device for feeding the fluid by rotating the rotor by the rotational force transmitted through the drive shaft. Therefore, in the hydraulic pump, the diameter of the inflow passage is formed to be larger than that of the discharge passage.

유압펌프는 그 형식에 따라 기어펌프, 루츠펌프, 베인펌프 등으로 구분되며, 기어펌프나 루츠펌프의 경우에는 상당한 소음이 발생되므로 베인펌프가 주로 사용되고 있다.Hydraulic pumps are classified into gear pumps, roots pumps, and vane pumps according to their types, and vane pumps are mainly used in the case of gear pumps or roots pumps because a considerable noise is generated.

베인펌프는 구동축에 의해 회전되는 로터에 방사형으로 복수개의 베인이 설치되어 진퇴되면서 오일을 압송하는 것으로서, 유입통로로 유입된 유체가 베인과 케이싱의 내벽 및 로터 사이에 형성된 공간에 가두어져 배출통로로 이송된다. 이때, 유입통로에 비해 배출통로의 직경이 작게 형성되어 유체의 압축효과가 나타나게 되며, 베인은 로터의 회전에 따른 원심력에 의해 외측으로 전진하게 되고 케이싱의 내벽과의 접촉에 의해 안쪽으로 후퇴된다.The vane pump is a radially installed vane in the rotor rotated by the drive shaft to push the oil forward and retreat, the fluid flowing into the inlet passage is confined in the space formed between the vane and the inner wall of the casing and the rotor to the discharge passage Transferred. At this time, the diameter of the discharge passage is smaller than that of the inlet passage, so that the compression effect of the fluid appears, and the vane is advanced outward by centrifugal force due to the rotation of the rotor and is retracted inward by contact with the inner wall of the casing.

그러나, 상기한 종래의 베인형 유압펌프는 유체전송부가 한군데에만 설치되어 유체의 압송효과가 낮으며 베인이 원심력에 의해 진퇴되므로 베인과 케이싱 내벽 사이에서 누설이 발생되어 압송효율이 떨어지는 문제점이 있다.However, the conventional vane-type hydraulic pump has a problem in that the fluid transmission unit is installed in only one place, so that the fluid feeding effect is low and the vanes are advanced and retracted by centrifugal force so that leakage occurs between the vanes and the inner wall of the casing, thereby lowering the feeding efficiency.

본 발명은 상기한 문제점을 해결하기 위하여 안출된 것으로서, 로터의 베인홈에 압유를 공급하여 베인의 끝부분과 케이싱 사이에서 오일 누설이 발생되지 않도록 함과 동시에 유체전송부를 2중으로 설치하여 유체압송량을 증대시킬 수 있는 이연식 유압펌프를 제공하는 데 그 목적이 있다.The present invention has been made to solve the above problems, by supplying a pressure oil to the vane groove of the rotor to prevent oil leakage between the end of the vane and the casing, and at the same time to install a fluid transfer unit in double fluid transfer amount The purpose is to provide a dehydration hydraulic pump that can increase the.

도 1은 본 발명에 의한 이연식 유압펌프의 평면도,1 is a plan view of a delayed hydraulic pump according to the present invention,

도 2는 도 1의 "A-A" 단면의 측단면도,Figure 2 is a side cross-sectional view of the "A-A" cross section of Figure 1,

도 3은 도 2의 "B-B" 방향의 단면도,3 is a cross-sectional view taken along the direction “B-B” of FIG. 2;

도 4는 본 발명의 요부 구성인 외측 커버가 도시된 도면,4 is a view showing an outer cover which is a main component of the present invention;

도 5는 본 발명의 요부구성인 내측 커버가 도시된 도면이다.5 is a view showing an inner cover which is a main component of the present invention.

＜도면의 주요 부분에 대한 부호의 설명＞<Description of the code | symbol about the principal part of drawing>

10 : 케이싱 11 : 유입통로10: casing 11: inflow passage

12 : 배출통로 13 : 압유홀12: discharge passage 13: pressure oil hole

20 : 로터 21 : 베인홈20: rotor 21: vane groove

30 : 베인 35 : 오링30: vane 35: O-ring

40 : 외측커버 41 : 오일공급부40: outer cover 41: oil supply

42 : 압유홈 43 : 오일통로42: pressure oil groove 43: oil passage

50 : 내측커버 51 : 오일공급부50: inner cover 51: oil supply

52 : 압유홈 53 : 오일통로52: pressure oil groove 53: oil passage

60 : 브라케트 61 : 구동축60: bracket 61: drive shaft

상기한 목적을 달성하기 위한 본 발명은 내부에 캐비티가 형성되고 오일이 출입하는 대구경의 유입통로 및 소구경의 배출통로가 형성된 케이싱과, 상기 케이싱의 캐비티 내부에 위치되고 구동축에 스플라인 결합되어 회전됨으로써 오일을 압축하는 로터와, 상기 로터에 방사형으로 형성된 베인홈에 설치되어 진퇴되는 베인과, 상기 케이싱의 양단에 설치되고 케이싱과의 사이에 오링이 개재되어 오일 누설을 방지하는 커버로 구성된 유압펌프에 있어서; 상기 케이싱의 캐비티는 타원형으로 형성되고 유입통로 및 배출통로가 각각 2개씩 형성되며, 외측커버 및 내측커버에는 상기 베인홈의 내측 끝단부와 연통되는 호형의 오일공급부가 형성되어 복수개의 베인홈에 압유를 공급하고, 상기 오일공급부는 상기 케이싱 및 커버에 형성된 연결유로를 통해 배출통로로부터 압유를 공급받는 것을 특징으로 한다.In order to achieve the above object, the present invention provides a casing in which a cavity is formed therein and an inflow passage of a large diameter through which oil enters and a discharge passage of a small diameter is formed, and is located inside the cavity of the casing and splined to a drive shaft to rotate. A hydraulic pump comprising a rotor for compressing oil, a vane installed in a vane groove radially formed in the rotor, and a vane installed in the rotor, and a cover installed at both ends of the casing and having an O-ring interposed between the casing to prevent oil leakage. In; The cavity of the casing is formed in an oval shape and two inflow passages and two discharge passages are formed, and an outer cover and an inner cover are formed with an arc-shaped oil supply portion communicating with the inner end of the vane groove, so as to pressurize the plurality of vane grooves. The oil supply unit is characterized in that for receiving the pressure oil from the discharge passage through the connection flow path formed in the casing and the cover.

이하, 첨부된 도면을 참조하여 본 발명의 바람직한 실시 예를 설명하면 다음과 같다.Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

본 발명의 이연식 유압펌프는 도 1 내지 도 3에 도시된 바와 같이 내부에 타원형의 캐비티가 형성되고 오일이 출입하는 대구경의 유입통로(11) 및 소구경의 배출통로(12)가 각각 2개씩 형성된 케이싱(10)과, 상기 케이싱(10)의 캐비티 내부에 위치되고 구동축(61)에 스플라인 결합되어 회전됨으로써 오일을 압축/전송하는 로터(20)와, 상기 로터(20)에 방사형으로 형성된 베인홈(21)에 설치되어 진퇴되는 베인(30)과, 상기 케이싱(10)의 양단에 설치되고 케이싱(10)과의 사이에 오링(35)이 개재되어 오일 누설을 방지하는 외측커버(40) 및 내측커버(50)와, 상기 내측커버(50)에 결합되어 장치를 지지하는 브라케트(60)로 구성된다.As shown in FIGS. 1 to 3, the delayed hydraulic pump of the present invention has an elliptical cavity formed therein, and two large-diameter inflow passages 11 and two small-diameter discharge passages 12 are respectively formed. Casing 10, the rotor 20 is located inside the cavity of the casing 10 and splined to the drive shaft 61 and rotated to compress / transfer oil, and a vane groove radially formed on the rotor 20 An outer cover 40 installed at the vane 30 and advancing and retreating, and installed at both ends of the casing 10 and having an o-ring 35 interposed between the casing 10 and an oil leakage, Inner cover 50, and is coupled to the inner cover 50 is composed of a bracket 60 for supporting the device.

도 4와 도 5에 도시된 바와 같이 상기 외측커버(40)의 중앙부에는 구동축(61)의 끝단을 지지하는 홈이 형성되고 내측커버(50)의 중앙부에는 관통홀이 형성되어 상기 구동축(61)을 지지하게 된다. 상기 외측커버(40) 및 내측커버(50)의 홈과 관통홀에는 물론 베어링(62)이 설치되어 구동축(61)을 회전자재하게 지지한다.As shown in FIGS. 4 and 5, a groove for supporting the end of the drive shaft 61 is formed in the center portion of the outer cover 40, and a through hole is formed in the center portion of the inner cover 50, so that the drive shaft 61 is formed. Will be supported. The bearing 62 is installed in the grooves and through holes of the outer cover 40 and the inner cover 50 to support the drive shaft 61 in a rotational manner.

또, 상기 외측커버(40) 및 내측커버(50)에는 상기 베인홈(21)의 내측 끝단부와 연통되는 호형의 오일공급부(41)(51)가 대향되게 형성되며, 상기 오일공급부(41)(51)는 케이싱(10) 및 각 커버(40)(50)에 형성된 연결유로를 통해 배출통로(12)의 압유를 공급받게 된다. 상기 연결유로는 상기 배출통로(12)에 수직하게 형성된 케이싱(10)의 유압홀(13)과, 상기 유압홀(13)과 연결된 각 커버(40)(50)의 유압홈(42)(52) 및 각 커버(40)(50)에 형성되어 유압홈(42)(52)과 상기 오일공급부(41)(51)를 연결하는 오일통로(43)(53)로 이루어진다. 여기서, 상기 배출통로(12)는 상기 오일공급부(41)(51)로 원활하게 압유가 공급되도록 상기 유입통로(11)와 일직선상에 형성되지 않고 유입통로(11)의 방향에 대하여 수직한 방향으로 형성된다.In addition, the outer cover 40 and the inner cover 50 are formed to be opposed to the arc-shaped oil supply unit 41, 51 which communicates with the inner end of the vane groove 21, the oil supply unit 41 51 is supplied with the pressure oil of the discharge passage 12 through the connection flow path formed in the casing 10 and each cover 40, 50. The connection flow path is a hydraulic hole 13 of the casing 10 formed perpendicular to the discharge passage 12, and the hydraulic grooves 42 and 52 of each cover 40 and 50 connected to the hydraulic hole 13. And oil passages 43 and 53 formed on the covers 40 and 50 to connect the hydraulic grooves 42 and 52 to the oil supply parts 41 and 51. Here, the discharge passage 12 is not formed in a straight line with the inflow passage 11 so that pressure oil is smoothly supplied to the oil supply parts 41 and 51, and is perpendicular to the direction of the inflow passage 11. Is formed.

물론, 상기 외측커버(40) 및 내측커버(50)는 물론 케이싱(10)에는 복수개의 볼트홀(66)이 형성되어, 하나의 볼트를 이용하여 이들을 일체로 결합시킬 수 있도록 하고 있다. 또, 커버(401)(50)와 케이싱(10)을 결합시킬 때 결합위치를 빠르게 설정할 수 있도록 각각에는 핀홀(66)이 형성되어 있다. 또, 상기 내측커버(50)에는 브라케트(60)와 결합될 수 있도록 돌출부와 볼트홀이 형성되며, 브라케트(60)에도 볼트홀이 형성되어 장치를 벽면에 부착할 수 있도록 하고 있다.Of course, a plurality of bolt holes 66 are formed in the casing 10 as well as the outer cover 40 and the inner cover 50 so that they can be integrally coupled using one bolt. In addition, pin holes 66 are formed in each of the cover 401, 50 and the casing 10 so that the engagement position can be quickly set. In addition, the inner cover 50 is formed with a protrusion and a bolt hole to be coupled to the bracket 60, a bolt hole is also formed in the bracket 60 to attach the device to the wall surface.

상기와 같이 구성되는 본 발명의 이연식 유압모터는 2군데의 유체전송부를 통해 오일을 압송하여 2개의 유압펌프와 동일한 역할을 수행한다.The dehydration hydraulic motor of the present invention configured as described above performs the same role as two hydraulic pumps by pumping oil through two fluid transmission units.

구동축(61)의 회전에 따라 로터(20)가 회전되면 베인(30)은 원심력에 의해 전진되어 베인(30)의 선단이 케이싱(10)의 내벽면에 접촉하게 된다. 따라서, 유입통로(11)를 통해 케이싱(10)의 캐비티에 공급된 오일이 베인(30)과 케이싱(10)의 내벽 및 로터(20) 사이의 공간을 통해 배출통로(12)측으로 이송된다. 배출통로(12)측으로 이송된 오일은 배출통로(12)의 직경이 유입통로(11)의 직경에 비해 작으므로 압축된 상태가 되어 케이싱(10)을 빠져나가게 된다.When the rotor 20 is rotated according to the rotation of the drive shaft 61, the vanes 30 are advanced by centrifugal force so that the tip of the vanes 30 contacts the inner wall surface of the casing 10. Therefore, the oil supplied to the cavity of the casing 10 through the inflow passage 11 is transferred to the discharge passage 12 side through the space between the vanes 30 and the inner wall of the casing 10 and the rotor 20. The oil transferred to the discharge passage 12 is in a compressed state because the diameter of the discharge passage 12 is smaller than the diameter of the inlet passage 11 to exit the casing 10.

이때, 상기 배출통로(12)의 오일중 일부가 압유홀(13)을 통해 커버(40)(50)의 압유홈(42)(52)으로 흐르게 되고, 압유홈(42)(52)의 오일은 오일통로(43)(53)를 통해 오일공급부(41)(51)로 흐른다. 오일공급부(41)(51)의 오일은 베인홈(21)의 끝단으로 유입되어 베인(30)을 밀게 된다. 따라서, 베인(30)은 압유에 의해 전진되어 케이싱(10)의 내벽에 소정의 압력을 가지고 밀착되어 이송되는 오일이 누설되지 않게 한다. 물론, 로터(20)의 회전에 따라 로터(20)와 케이싱(10) 사이의 간격이 좁아지면 베인(30)은 후퇴된다.At this time, some of the oil of the discharge passage 12 flows through the pressure oil hole 13 to the pressure oil grooves 42 and 52 of the covers 40 and 50, and the oil of the oil pressure grooves 42 and 52 is Flow through the oil passage (43) (53) to the oil supply portion (41) (51). The oil of the oil supply parts 41 and 51 flows into the end of the vane groove 21 and pushes the vane 30. Therefore, the vanes 30 are advanced by the pressurized oil and adhered to the inner wall of the casing 10 with a predetermined pressure so that oil conveyed is not leaked. Of course, when the gap between the rotor 20 and the casing 10 becomes narrower as the rotor 20 rotates, the vanes 30 are retracted.

여기서, 상기 케이싱(10)의 캐비티가 타원형으로 형성되므로, 케이싱(10)의 상부와 하부에서 오일이 동시에 전송된다. 즉, 2개의 유입통로(11)를 통해 유입된 오일이 케이싱(10)의 상부와 하부에서 동시에 압송된 후, 각각의 배출통로(12)를 통해 케이싱(10)의 외측으로 빠져나가게 된다. 따라서, 본 발명의 이연식 우압펌프는 하나의 구동축(61)을 이용하여 오일을 이중으로 압송하여 2대의 유압펌프와 같은 역할을 수행하는 것이다.Here, since the cavity of the casing 10 is formed in an oval shape, oil is simultaneously transferred from the upper and lower portions of the casing 10. That is, the oil introduced through the two inflow passages 11 are simultaneously pumped from the upper and lower portions of the casing 10, and then exits to the outside of the casing 10 through the respective discharge passages 12. Therefore, the deferred type right pressure pump of the present invention performs the same role as two hydraulic pumps by dually pumping oil using one drive shaft 61.

이와 같이, 본 발명의 이연식 유압펌프는 오일을 이중으로 압송하여 오일압송량이 증가되고 압유를 이용하여 베인을 진퇴시키게 되므로 베인과 케이싱 사이로 오일이 누설되지 않아 압송효율이 증대되는 이점이 있다.As described above, the delayed hydraulic pump of the present invention has an advantage in that the oil feeding amount is increased by double feeding the oil and the vane is pushed back and forth by using the pressurized oil so that oil is not leaked between the vane and the casing, thereby increasing the feeding efficiency.

Claims (3)

내부에 캐비티가 형성되고 오일이 출입하는 대구경의 유입통로 및 소구경의 배출통로가 형성된 케이싱과, 상기 케이싱의 캐비티 내부에 위치되고 구동축에 스플라인 결합되어 회전됨으로써 오일을 압축하는 로터와, 상기 로터에 등간격으로 형성된 베인홈에 설치되어 상하 이동되는 베인과, 상기 케이싱의 양단에 설치되고 케이싱과의 사이에 오링이 개재되어 오일 누설을 방지하는 커버로 구성된 유압펌프에 있어서,A casing having a cavity formed therein and having a large-diameter inflow passage and a small-diameter discharge passage formed therein, a rotor positioned inside the cavity of the casing and splined to the drive shaft to rotate to compress the oil, and to the rotor In the hydraulic pump consisting of vanes which are installed in the vane groove formed at equal intervals and moved up and down, and covers installed at both ends of the casing and O-ring interposed between the casing to prevent oil leakage. 상기 케이싱의 캐비티는 타원형으로 형성되고 유입통로 및 배출통로가 각각 2개씩 형성되며, 외측커버 및 내측커버에는 상기 베인홈의 내측 끝단부와 연통되는 호형의 오일공급부가 대향되게 형성되어 복수개의 베인홈에 압유를 공급하고, 상기 오일공급부는 상기 케이싱 및 커버에 형성된 연결유로를 통해 배출통로로부터 압유를 공급받는 것을 특징으로 하는 이연식 오일펌프.The cavity of the casing is formed in an elliptical shape and two inflow passages and two discharge passages are formed, and an outer cover and an inner cover are formed to face an arc-shaped oil supply portion communicating with the inner end of the vane groove, and thus a plurality of vane grooves. And supplying the pressurized oil to the oil supply unit, wherein the oil supply unit receives the pressurized oil from the discharge passage through a connection passage formed in the casing and the cover. 제 1 항에 있어서,The method of claim 1, 상기 배출통로는 상기 유입통로와 직선상에 위치되지 않고 수직한 방향으로 형성된 것을 특징으로 하는 이연식 유압펌프.The discharge passage is a delayed hydraulic pump, characterized in that formed in a vertical direction and not located in a straight line with the inflow passage. 제 1 항에 있어서,The method of claim 1, 상기 연결 유로는 상기 배출통로에 수직하게 형성된 유압홀과, 상기 커버에 형성되고 상기 유압홀과 연결된 유압홈과 상기 오일공급부를 연결하도록 상기 커버에 형성된 오일통로로 이루어진 것을 특징으로 하는 이연식 유압펌프.The connecting flow path is a delayed hydraulic pump comprising a hydraulic hole formed perpendicular to the discharge passage, and an oil passage formed in the cover to connect the hydraulic groove formed in the cover and the hydraulic hole and the oil supply unit.
KR1019990014734A 1999-04-24 1999-04-24 Duplication type oil pump KR20000067166A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113833830A (en) * 2021-09-29 2021-12-24 阿姆特(上海)新能源科技有限公司 Oil pump device, transmission and vehicle

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Publication number Priority date Publication date Assignee Title
US4621986A (en) * 1985-12-04 1986-11-11 Atsugi Motor Parts Company, Limited Rotary-vane compressor
JPH057983U (en) * 1991-07-11 1993-02-02 豊田工機株式会社 Variable displacement vane pump device
JPH0512680U (en) * 1991-07-29 1993-02-19 豊田工機株式会社 Vane pump
JPH10196556A (en) * 1997-01-08 1998-07-31 Showa:Kk Vane pump

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4621986A (en) * 1985-12-04 1986-11-11 Atsugi Motor Parts Company, Limited Rotary-vane compressor
JPH057983U (en) * 1991-07-11 1993-02-02 豊田工機株式会社 Variable displacement vane pump device
JPH0512680U (en) * 1991-07-29 1993-02-19 豊田工機株式会社 Vane pump
JPH10196556A (en) * 1997-01-08 1998-07-31 Showa:Kk Vane pump

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113833830A (en) * 2021-09-29 2021-12-24 阿姆特(上海)新能源科技有限公司 Oil pump device, transmission and vehicle

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