KR101305159B1 - Oil pump for automatic transmission - Google Patents

Oil pump for automatic transmission Download PDF

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Publication number
KR101305159B1
KR101305159B1 KR1020110074636A KR20110074636A KR101305159B1 KR 101305159 B1 KR101305159 B1 KR 101305159B1 KR 1020110074636 A KR1020110074636 A KR 1020110074636A KR 20110074636 A KR20110074636 A KR 20110074636A KR 101305159 B1 KR101305159 B1 KR 101305159B1
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KR
South Korea
Prior art keywords
gear
drive gear
oil pump
housing
automatic transmission
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KR1020110074636A
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Korean (ko)
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KR20130013162A (en
Inventor
임현구
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현대 파워텍 주식회사
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Priority to KR1020110074636A priority Critical patent/KR101305159B1/en
Publication of KR20130013162A publication Critical patent/KR20130013162A/en
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Publication of KR101305159B1 publication Critical patent/KR101305159B1/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
    • 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
    • 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
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • 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
    • F04C2210/00—Fluid
    • F04C2210/20—Fluid liquid, i.e. incompressible
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S415/00—Rotary kinetic fluid motors or pumps
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S417/00—Pumps

Abstract

자동변속기용 오일펌프에 대한 발명이 개시된다. 개시된 자동변속기용 오일펌프는: 흡입홈부와 토출홈부를 구비하는 하우징과, 하우징의 내측에 장착되는 드리븐기어와, 드리븐기어의 내측에 편심되게 치합되는 드라이브기어 및 하우징과 마주하는 드라이브기어의 내측면에 외측과 연통되는 홈을 형성하는 배출홈부를 구비하는 것을 특징으로 한다.Disclosed is an oil pump for an automatic transmission. The disclosed oil pump for an automatic transmission includes: a housing having a suction groove portion and a discharge groove portion, a driven gear mounted inside the housing, a drive gear eccentrically engaged inside the driven gear, and an inner surface of the drive gear facing the housing. It characterized in that it comprises a discharge groove to form a groove in communication with the outside.

Description

자동변속기용 오일펌프{OIL PUMP FOR AUTOMATIC TRANSMISSION}Oil Pump for Automatic Transmission {OIL PUMP FOR AUTOMATIC TRANSMISSION}

본 발명은 자동변속기용 오일펌프에 관한 것으로서, 보다 상세하게는 드라이브기어와 하우징부의 사이로 유입된 이물질을 외측으로 배출하여 부품의 내구성을 향상시킬 수 있는 자동변속기용 오일펌프에 관한 것이다.
The present invention relates to an oil pump for an automatic transmission, and more particularly, to an oil pump for an automatic transmission capable of improving durability of a part by discharging foreign substances introduced between the drive gear and the housing part to the outside.

일반적으로, 자동변속기에 구비된 오일펌프는, 토오크 컨버터로부터 구동력을 전달받아 작동이 이루어진다.In general, the oil pump provided in the automatic transmission is operated by receiving a driving force from the torque converter.

이러한 오일펌프는, 토오크 컨버터와 밸브 바디내의 유압기구에 작동 유압을 공급함과 더불어, 유성기어를 비롯한 각종 마찰 요소에 윤활 유압을 공급한다.The oil pump supplies lubricating hydraulic pressure to various friction elements including planetary gears, while supplying hydraulic pressure to the torque converter and the hydraulic mechanism in the valve body.

오일펌프에는 하우징에 드리븐기어(Driven Gear)가 장착되며, 이러한 드리븐기어의 내측에 드라이브기어(Drive Grar)가 회전 가능하게 치합되어 오일을 압축하여 배출한다.The oil pump is equipped with a driven gear (Driven Gear) in the housing, the drive gear (Drive Grar) is rotatably engaged inside the driven gear is compressed to discharge the oil.

본 발명의 배경기술은 대한민국 공개특허공보 2003-0006081호(2003.01.23 공개, 발명의 명칭: 유량 가변식 오일펌프)에 개시되어 있다.
Background art of the present invention is disclosed in Korean Unexamined Patent Publication No. 2003-0006081 (published Jan. 23, 2003, name of the invention: variable flow oil pump).

드라이브기어와 하우징의 사이에 이물질이 유입되는 경우, 드라이브기어의 회전에 따라 지속적인 마모가 발생하여, 부품의 내구성이 저하된다. 따라서, 이를 개선할 필요성이 요청된다.When foreign matter flows between the drive gear and the housing, continuous wear occurs as the drive gear rotates, thereby deteriorating the durability of the part. Therefore, there is a need to improve this.

본 발명은 상기와 같은 필요성에 의해 창출된 것으로서, 드라이브기어와 하우징부의 사이로 유입된 이물질을 외측으로 배출하여 부품의 내구성을 향상시킬 수 있는 자동변속기용 오일펌프를 제공하는 데 그 목적이 있다.
The present invention has been made by the necessity as described above, an object of the present invention to provide an oil pump for an automatic transmission that can improve the durability of the parts by discharging the foreign matter introduced between the drive gear and the housing portion to the outside.

본 발명에 따른 자동변속기용 오일펌프는: 흡입홈부와 토출홈부를 구비하는 하우징과, 하우징의 내측에 장착되는 드리븐기어와, 드리븐기어의 내측에 편심되게 치합되는 드라이브기어 및 하우징과 마주하는 드라이브기어의 내측면에 외측과 연통되는 홈을 형성하는 배출홈부를 포함한다.An oil pump for an automatic transmission according to the present invention includes: a housing having a suction groove and a discharge groove, a driven gear mounted inside the housing, a drive gear eccentrically engaged inside the driven gear, and a drive gear facing the housing. It includes an exhaust groove portion to form a groove in communication with the outside on the inner side of.

또한 드라이브기어는 중공부를 구비하는 기어몸체 및 기어몸체의 외측 둘레를 따라 돌출되는 제1기어치를 포함하는 것이 바람직하다.In addition, the drive gear preferably includes a gear body having a hollow portion and a first gear projecting along the outer circumference of the gear body.

또한 배출홈부는, 드라이브기어를 따라 복수 개 설치되는 것이 바람직하다.In addition, it is preferable that a plurality of discharge grooves are provided along the drive gear.

또한 배출홈부는, 중공부의 접선과 평행한 방향으로 설치되는 것이 바람직하다.In addition, the discharge groove is preferably provided in a direction parallel to the tangent of the hollow portion.

또한 배출홈부의 출구는 제1기어치의 측면에 형성되는 것이 바람직하다.
In addition, the outlet of the discharge groove is preferably formed on the side of the first gear.

본 발명에 따른 자동변속기용 오일펌프는, 드라이브기어와 하우징의 사이에 유입된 이물질이 배출홈부를 따라 외측으로 배출되므로, 이물질에 의한 부품의 마모를 감소시켜 부품의 내구성을 향상시킬 수 있다.
In the oil pump for an automatic transmission according to the present invention, since the foreign matter introduced between the drive gear and the housing is discharged to the outside along the discharge groove, the wear of the part due to the foreign matter can be reduced to improve durability of the part.

도 1은 본 발명의 일 실시예에 따른 자동변속기용 오일펌프를 개략적으로 도시한 사시도이다.
도 2는 본 발명의 일 실시예에 따른 자동변속기용 오일펌프를 개략적으로 도시한 정면도이다.
도 3은 본 발명의 일 실시예에 따른 드라이브기어를 도시한 사시도이다.
도 4는 본 발명의 일 실시예에 따른 드라이브기어에 배출홈부가 형성된 상태를 개략적으로 도시한 정면도이다.1 is a perspective view schematically showing an oil pump for an automatic transmission according to an embodiment of the present invention.
2 is a front view schematically showing an oil pump for an automatic transmission according to an embodiment of the present invention.
3 is a perspective view showing a drive gear according to an embodiment of the present invention.
Figure 4 is a front view schematically showing a state in which the discharge groove is formed in the drive gear according to an embodiment of the present invention.

이하, 첨부된 도면들을 참조하여 본 발명에 따른 자동변속기용 오일펌프의 일 실시예를 설명한다. 설명의 편의를 위해 자동차에 사용되는 자동변속기용 오일펌프를 예로 들어 설명한다. 이 과정에서 도면에 도시된 선들의 두께나 구성요소의 크기 등은 설명의 명료성과 편의상 과장되게 도시되어 있을 수 있다. 또한, 후술되는 용어들은 본 발명에서의 기능을 고려하여 정의된 용어들로서 이는 사용자, 운용자의 의도 또는 관례에 따라 달라질 수 있다. 그러므로, 이러한 용어들에 대한 정의는 본 명세서 전반에 걸친 내용을 토대로 내려져야 할 것이다.
Hereinafter, an embodiment of an oil pump for an automatic transmission according to the present invention will be described with reference to the accompanying drawings. For convenience of description, an oil pump for an automatic transmission used in an automobile will be described as an example. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to the intention or convention of a user or an operator. Therefore, definitions of these terms should be made based on the contents throughout the specification.

도 1은 본 발명의 일 실시예에 따른 자동변속기용 오일펌프를 개략적으로 도시한 사시도이며, 도 2는 본 발명의 일 실시예에 따른 자동변속기용 오일펌프를 개략적으로 도시한 정면도이며, 도 3은 본 발명의 일 실시예에 따른 드라이브기어를 도시한 사시도이며, 도 4는 본 발명의 일 실시예에 따른 드라이브기어에 배출홈부가 형성된 상태를 개략적으로 도시한 정면도이다.1 is a perspective view schematically showing an oil pump for an automatic transmission according to an embodiment of the present invention, Figure 2 is a front view schematically showing an oil pump for an automatic transmission according to an embodiment of the present invention, Figure 3 4 is a perspective view showing a drive gear according to an embodiment of the present invention, Figure 4 is a front view schematically showing a state in which the discharge groove is formed in the drive gear according to an embodiment of the present invention.

도 1 내지 도 4에 도시된 바와 같이, 본 발명의 일 실시예에 따른 자동변속기용 오일펌프(1)는, 흡입홈부(12)와 토출홈부(14)를 구비하는 하우징(10)과, 하우징(10)의 내측에 장착되는 드리븐기어(20)와, 드리븐기어(20)의 내측에 편심되게 치합되는 드라이브기어(30) 및 하우징(10)과 마주하는 드라이브기어(30)의 내측면(33)에 외측과 연통되는 홈을 형성하는 배출홈부(40)를 포함한다.1 to 4, the oil pump 1 for an automatic transmission according to an embodiment of the present invention includes a housing 10 having a suction groove 12 and a discharge groove 14, and a housing. The inner side of the drive gear 30 and the drive gear 30 facing the housing 10 and the drive gear 30 mounted eccentrically to the inside of the driven gear 20 and the drive gear 30 mounted inside the 10. It includes a discharge groove 40 to form a groove in communication with the outside.

자동변속기용 오일펌프(1)의 하우징(10)은, 내측에 드리븐기어(20)가 장착되며, 오일이 공급되는 흡입홈부(12)와, 압축된 오일이 토출되는 토출홈부(14)를 구비한다.The housing 10 of the oil pump 1 for an automatic transmission has a driven gear 20 mounted therein, a suction groove portion 12 through which oil is supplied, and a discharge groove portion 14 through which compressed oil is discharged. do.

하우징(10)의 내측에 장착되는 드리븐기어(20)는, 내측에 오일이 공급되는 작동공간(24)이 구비되며, 이러한 작동공간(24)을 향하여 제2기어치(22)가 돌출 형성된다.The driven gear 20 mounted inside the housing 10 includes an operating space 24 through which oil is supplied, and a second gear 22 protrudes toward the operating space 24. .

드리븐기어(20)의 내측에 편심되게 치합되는 드라이브기어(30)는, 회전되는 샤프트(도시생략)의 관통이 이루어지는 중공부(34)를 내측에 구비한다.The drive gear 30 that is eccentrically engaged with the driven gear 20 has a hollow portion 34 through which a shaft (not shown) that is rotated is penetrated.

링 형상의 기어몸체(32)의 내측에 중공부(34)가 구비되며, 이러한 기어몸체(32)의 외측 둘레를 따라 제1기어치(36)가 돌출된다.The hollow part 34 is provided inside the ring-shaped gear body 32, and the first gear 36 protrudes along the outer circumference of the gear body 32.

드라이브기어(30)의 회전에 의해, 드라이브기어(30)의 제1기어치(36)는 드리븐기어(20)의 제2기어치(22)에 맞물려 회전되며, 이러한 드라이브기어(30)의 회전으로 작동공간(24)으로 공급된 오일은 압축된 후, 외측으로 이송된다.By the rotation of the drive gear 30, the first gear 36 of the drive gear 30 is engaged with the second gear 22 of the driven gear 20 to rotate, the rotation of such drive gear 30 The oil supplied to the working space 24 is compressed and then conveyed outward.

기어몸체(32)의 내측으로 장착키(39)가 돌출되며, 이러한 장착키(39)는 샤프트의 측면에 삽입되어 축 연결된다.The mounting key 39 protrudes into the gear body 32, and the mounting key 39 is inserted into the side of the shaft and connected to the shaft.

드리븐기어(20)와 드라이브기어(30)의 구성 및 작동상태는, 당업자에게 있어 자명한 기술사상이므로, 이에 따른 상세한 설명은 생략한다.Since the configuration and operation of the driven gear 20 and the drive gear 30 are obvious to those skilled in the art, detailed description thereof will be omitted.

하우징(10)과 마주하는 드라이브기어(30)의 내측면(33)에 외측과 연통되는 홈을 형성하는 배출홈부(40)가 형성된다.A discharge groove 40 is formed on the inner surface 33 of the drive gear 30 facing the housing 10 to form a groove communicating with the outside.

배출홈부(40)는, 드라이브기어(30)의 내측면(33) 둘레를 따라 복수 개 설치되며, 이러한 배출홈부(40)는, 중공부(34)의 접선(50)과 평행한 방향으로 설치된다.A plurality of discharge grooves 40 are provided along the inner circumference 33 of the drive gear 30, and the discharge grooves 40 are installed in a direction parallel to the tangent 50 of the hollow part 34. do.

이에 따라서, 드라이브기어(30)의 배출홈부(40)에 인입된 이물질이, 드라이브기어(30)의 회전에 따라 발생하는 원심력에 의해 이동되어 드라이브기어(30)의 외측으로 배출된다.Accordingly, foreign matter introduced into the discharge groove 40 of the drive gear 30 is moved by the centrifugal force generated by the rotation of the drive gear 30 to be discharged to the outside of the drive gear 30.

드라이브기어(30)의 내측면(33)에 형성된 배출홈부(40)의 출구(42)는 제1기어치(36)의 측면(38)에 형성된다.The outlet 42 of the discharge groove 40 formed on the inner side 33 of the drive gear 30 is formed on the side face 38 of the first gear 36.

배출홈부(40)의 형상은, 제1기어치(36)의 측면(38)에서 기어몸체(32)를 향하여 비스듬하게 형성되므로, 이물질의 배출이 용이하게 이루어진다.Since the shape of the discharge groove 40 is formed obliquely toward the gear body 32 at the side face 38 of the first gear 36, it is easy to discharge the foreign matter.

일 실시예에 따른 배출홈부(40)는, 드라이브기어(30)의 회전 방향이 반시계 방향(이하 도 2기준)인 경우, 제1기어치(36)에서 반시계 방향을 향한 측면(도 2기준 제1기어치의 좌측 측면)(38)에 출구(42)가 형성된다.Discharge groove 40 according to an embodiment, when the rotation direction of the drive gear 30 is a counterclockwise direction (see Fig. 2 below), the side toward the counterclockwise direction from the first gear 36 (Fig. 2) An outlet 42 is formed on the left side 38 of the reference first gear.

이하에서는 첨부된 도면들을 참조하여 본 발명의 일 실시예에 따른 자동변속기용 오일펌프(1)의 작동상태를 상세히 설명한다.Hereinafter, with reference to the accompanying drawings will be described in detail the operating state of the oil pump 1 for an automatic transmission according to an embodiment of the present invention.

하우징(10)의 흡입부로 유입된 오일은 드리븐기어(20)의 작동공간(24)으로 공급된다. 드라이브기어(30)가 반시계 회전방향(52)으로 회전되면, 제1기어치(36)와 제2기어치(22)가 맞물려 회전되면서 오일이 압축되어 토출홈부(14)를 통해 외측으로 이동된다.The oil flowing into the suction part of the housing 10 is supplied to the working space 24 of the driven gear 20. When the drive gear 30 is rotated in the counterclockwise rotation direction 52, the first gear 36 and the second gear 22 rotate in engagement with each other to compress the oil and move outward through the discharge groove 14. do.

이때, 드라이브기어(30)의 내측면(33)과 하우징(10)의 사이로 이물질이 유입된 경우, 드라이브기어(30)의 회전으로 이물질은 배출홈부(40)에 모인다.At this time, when foreign matter is introduced between the inner surface 33 of the drive gear 30 and the housing 10, the foreign matter is collected in the discharge groove 40 by the rotation of the drive gear (30).

이러한 배출홈부(40)는, 드라이브기어(30)의 중공부(34)의 둘레를 따라 접하는 접선(50)과 평행을 이루므로, 드라이브기어(30)이 회전에 따라, 배출홈부(40)의 이물질도 제1기어치(36)의 측면(38)에 형성된 출구(42)를 따라 드라이브기어(30)의 외측으로 배출된다.Since the discharge groove 40 is in parallel with the tangent 50 which is in contact with the circumference of the hollow portion 34 of the drive gear 30, the drive gear 30 is rotated, so that the discharge groove 40 is The foreign matter is also discharged to the outside of the drive gear 30 along the outlet 42 formed on the side surface 38 of the first gear 36.

상술한 바와 같은 구성에 의하면, 일 실시예에 따른 자동변속기용 오일펌프(1)는, 드라이브기어(30)와 하우징(10)의 사이에 유입된 이물질이 배출홈부(40)를 따라 외측으로 배출되므로, 이물질에 의한 부품의 마모를 감소시켜 부품의 내구성을 향상시킬 수 있다.According to the configuration as described above, the oil pump 1 for an automatic transmission according to an embodiment, the foreign matter introduced between the drive gear 30 and the housing 10 is discharged to the outside along the discharge groove 40. Therefore, it is possible to improve the durability of the parts by reducing the wear of the parts by foreign matter.

본 발명은 도면에 도시된 실시예를 참고로 하여 설명되었으나, 이는 예시적인 것에 불과하며, 당해 기술이 속하는 분야에서 통상의 지식을 가진 자라면 이로부터 다양한 변형 및 균등한 타 실시예가 가능하다는 점을 이해할 것이다.While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. I will understand.

또한, 자동차에 사용되는 자동변속기용 오일펌프를 예로 들어 설명하였으나, 이는 예시적인 것에 불과하며, 다른 기계장치에 사용되는 변속기에도, 본 발명에 의한 자동변속기용 오일펌프가 사용될 수 있다.In addition, the oil pump for an automatic transmission used in an automobile has been described as an example, but this is merely exemplary, and the oil pump for an automatic transmission according to the present invention may also be used for a transmission used in another mechanical device.

따라서, 본 발명의 진정한 기술적 보호범위는 특허청구범위에 의해서 정하여져야 할 것이다.
Accordingly, the true scope of protection of the present invention should be defined by the claims.

1: 자동변속기용 오일펌프
10: 하우징 12: 흡입홈부
14: 토출홈부 20: 드리븐기어
22: 제2기어치 24: 작동공간
30: 드라이브기어 32: 기어몸체
33: 내측면 34: 중공부
36: 제1기어치 38: 측면
39: 장착키 40: 배출홈부
42: 출구 50: 접선
52: 회전방향1: oil pump for automatic transmission
10: housing 12: suction groove
14: discharge groove 20: driven gear
22: second gear 24: operating space
30: drive gear 32: gear body
33: inner side 34: hollow part
36: first gear 38: side
39: mounting key 40: discharge groove
42: exit 50: tangential
52: direction of rotation

Claims (5)

흡입홈부와 토출홈부를 구비하는 하우징;
상기 하우징의 내측에 장착되는 드리븐기어;
상기 드리븐기어의 내측에 편심되게 치합되는 드라이브기어; 및
상기 드라이브기어를 따라 복수 개 설치되며, 상기 하우징과 마주하는 상기 드라이브기어의 내측면에 외측과 연통되는 홈을 형성하는 배출홈부를 포함하며,
상기 드라이브기어는 중공부를 구비하는 기어몸체; 및
상기 기어몸체의 외측 둘레를 따라 돌출되는 제1기어치를 포함하며,
상기 배출홈부는, 상기 제1기어치의 측면에서 상기 기어몸체를 향하여 비스듬하게 형성되어 상기 중공부의 접선과 평행한 방향으로 설치되며, 상기 배출홈부의 출구는 상기 제1기어치의 측면에 형성되는 것을 특징으로 하는 자동변속기용 오일펌프.A housing having a suction groove and a discharge groove;
A driven gear mounted inside the housing;
A drive gear that is eccentrically engaged with the driven gear; And
It is provided with a plurality along the drive gear, and comprises a discharge groove for forming a groove in communication with the outside on the inner surface of the drive gear facing the housing,
The drive gear is a gear body having a hollow portion; And
It includes a first gear protruding along the outer periphery of the gear body,
The discharge groove is formed obliquely toward the gear body at the side of the first gear is installed in a direction parallel to the tangent of the hollow portion, the outlet of the discharge groove is formed on the side of the first gear. Oil pumps for automatic transmissions. 삭제delete 삭제delete 삭제delete 삭제delete
KR1020110074636A 2011-07-27 2011-07-27 Oil pump for automatic transmission KR101305159B1 (en)

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KR101876071B1 (en) * 2016-10-31 2018-07-06 현대 파워텍 주식회사 Connecting structure of torque convertor hub and oil pump gear for an automatic transmission

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0722088A (en) * 1993-06-30 1995-01-24 Sumitomo Wiring Syst Ltd Structure and method for waterproof wire connection
JP2003176790A (en) * 2001-12-07 2003-06-27 Aisin Aw Co Ltd Fluid pump
KR20040015412A (en) * 2002-08-12 2004-02-19 현대자동차주식회사 Automatic transmission type oil pump
KR100435686B1 (en) 2001-10-25 2004-06-12 현대자동차주식회사 Continuously variable transmission type oil pump

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0722088A (en) * 1993-06-30 1995-01-24 Sumitomo Wiring Syst Ltd Structure and method for waterproof wire connection
KR100435686B1 (en) 2001-10-25 2004-06-12 현대자동차주식회사 Continuously variable transmission type oil pump
JP2003176790A (en) * 2001-12-07 2003-06-27 Aisin Aw Co Ltd Fluid pump
KR20040015412A (en) * 2002-08-12 2004-02-19 현대자동차주식회사 Automatic transmission type oil pump

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