KR20040034831A - Planetary gear set - Google Patents

Planetary gear set Download PDF

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Publication number
KR20040034831A
KR20040034831A KR1020020063459A KR20020063459A KR20040034831A KR 20040034831 A KR20040034831 A KR 20040034831A KR 1020020063459 A KR1020020063459 A KR 1020020063459A KR 20020063459 A KR20020063459 A KR 20020063459A KR 20040034831 A KR20040034831 A KR 20040034831A
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KR
South Korea
Prior art keywords
gear
pinion gear
pinion
engaged
planetary gear
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KR1020020063459A
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Korean (ko)
Inventor
고정한
Original Assignee
현대자동차주식회사
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Priority to KR1020020063459A priority Critical patent/KR20040034831A/en
Publication of KR20040034831A publication Critical patent/KR20040034831A/en

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Classifications

    • 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
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
    • 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
    • F16H48/00—Differential gearings
    • F16H48/06—Differential gearings with gears having orbital motion
    • F16H48/08—Differential gearings with gears having orbital motion comprising bevel gears
    • F16H2048/087—Differential gearings with gears having orbital motion comprising bevel gears characterised by the pinion gears, e.g. their type or arrangement
    • 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
    • F16H48/00—Differential gearings
    • F16H48/06—Differential gearings with gears having orbital motion
    • F16H48/10—Differential gearings with gears having orbital motion with orbital spur gears
    • F16H2048/104—Differential gearings with gears having orbital motion with orbital spur gears characterised by two ring gears
    • 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
    • F16H57/08—General details of gearing of gearings with members having orbital motion
    • F16H2057/085—Bearings for orbital gears
    • 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
    • F16H57/08—General details of gearing of gearings with members having orbital motion
    • F16H2057/087—Arrangement and support of friction devices in planetary gearings, e.g. support of clutch drums, stacked arrangements of friction devices

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Retarders (AREA)
  • General Details Of Gearings (AREA)

Abstract

PURPOSE: A planetary gear set is provided to improve the durability of the power train unit by supporting the structural moment applied to a rotating shaft of a pinion gear with forming a stepped portion in the pinion gear. CONSTITUTION: A planetary gear set comprises a pinion gear(1) having a stepped portion; a sun gear(3) and a ring gear(5) engaged with steps of the pinion gear; a first idle support unit placed outside the step of the pinion gear engaged with the sun gear; and a second idle support unit placed inside the step of the pinion gear engaged with the ring gear. Lowering of durability is prevented from structural moment by supporting the pinion gear with keeping balance with the first idle support unit and the second idle support unit. An idle gear(7) revolves and rotates around the central shaft between the central shaft gear and the gear formed in the outer wall by forming the cylindrical idle support units.

Description

유성기어장치{planetary gear set}Planetary gear set

본 발명은 유성기어장치에 관한 것으로서, 보다 상세하게는 단차를 가진 피니언기어를 채용한 유성기어장치의 내구성을 확보할 수 있도록 하는 기술에 관한 것이다.The present invention relates to a planetary gear device, and more particularly, to a technology for ensuring durability of a planetary gear device employing a pinion gear having a step.

도 1은 일반적인 유성기어장치가 도시되어 있는바, 선기어(100)와 링기어(102)의 사이에 피니언기어(104)가 치합되어 있는 상태로서, 여기에 사용되고 있는 피니언기어(104)는 단순한 원주형으로 형성된 것이며, 도 2에는 피니언기어(106)가 단차를 가진 원주형으로 형성된 것이 도시되어 있다.1 shows a general planetary gear device, in which a pinion gear 104 is engaged between a sun gear 100 and a ring gear 102. The pinion gear 104 used here is a simple circumference. 2, the pinion gear 106 is formed in a columnar shape with a step.

도 2에 도시된 바와 같이 피니언기어(106)에 단차가 형성된 유성기어장치는 거의 쓰이지 않고 있는 상황이지만, 상기한 바와 같이 피니언기어(106)에 단차가 형성된 유성기어장치는 요구되는 기어비를 컴팩트한 구조로서 제공하기 위해서는 필수 불가결한 구성이다.As shown in FIG. 2, the planetary gear device having a stepped portion in the pinion gear 106 is rarely used. However, as described above, the planetary gear device having a stepped portion in the pinion gear 106 has a compact gear ratio. It is an indispensable configuration to provide as a structure.

그러나, 상기한 바와 같이 피니언기어(106)에 단차가 형성되어 있으면, 상기 피니언기어(106)에 치합되는 선기어(108)와 링기어(110)는 각각 서로 다른 단에 치합되어야 하므로, 도시된 바와 같이 상기 피니언기어(106)의 회전축(112)에 구조적으로 과도한 모멘트(M)가 걸리게 되어 그 내구성을 충분히 확보할 수 없으므로, 실질적인 차량의 변속기 등에는 사용하지 못하는 문제점이 있다.However, if a step is formed in the pinion gear 106 as described above, since the sun gear 108 and the ring gear 110 meshed with the pinion gear 106 must be engaged with each other at different stages, as shown in FIG. As described above, since the moment (M) is structurally excessively applied to the rotation shaft 112 of the pinion gear 106, its durability cannot be sufficiently secured.

이에 본 발명은 상기한 바와 같은 문제점을 해결하기 위하여 안출된 것으로서, 상기와 같이 단차를 가진 피니언기어를 채용하면서도 피니언기어의 회전축에 구조적인 모멘트가 작용하는 것에 대하여 적절히 지지하도록 함으로써 다양한 동력 전달 장치에 충분한 내구성을 제공하면서 사용될 수 있는 유성기어장치를 제공함에 그 목적이 있다.Accordingly, the present invention has been made to solve the problems described above, by adopting the pinion gear having a step as described above, by appropriately supporting the structural moment acting on the rotation axis of the pinion gear to various power transmission devices The object is to provide a planetary gear device that can be used while providing sufficient durability.

도 1은 종래의 일반적인 유성기어장치의 구조를 도시한 도면,1 is a view showing the structure of a conventional general planetary gear device;

도 2는 종래의 단차를 가진 유성기어장치의 구조를 도시한 도면,Figure 2 is a view showing the structure of a conventional planetary gear unit having a step,

도 3은 본 발명에 따른 유성기어장치의 구조를 도시한 도면,Figure 3 is a view showing the structure of the planetary gear device according to the present invention,

도 4 내지 도 6은 본 발명 유성기어장치의 다른 실시예를 도시한 도면이다.4 to 6 are views showing another embodiment of the planetary gear device of the present invention.

<도면의 주요 부분에 대한 부호의 간단한 설명><Brief description of symbols for the main parts of the drawings>

1, 21; 피니언기어3, 23; 선기어1, 21; Pinion gear 3, 23; Sun gear

5, 25; 링기어7; 아이들기어5, 25; Ring gear 7; Children gear

31; 내접기어32, 36; 베어링31; Internal gears 32 and 36; bearing

33; 내접링기어35; 외접기어33; Internal ring gear 35; External gear

37; 외접링기어37; External ring gear

상기한 바와 같은 목적을 달성하기 위한 본 발명 유성기어장치는 단차를 가진 피니언기어와;The planetary gear device of the present invention for achieving the above object is a pinion gear having a step;

상기 피니언기어의 각 단에 각각 치합되는 선기어 및 링기어와;A sun gear and a ring gear meshed with respective stages of the pinion gear;

상기 선기어가 치합된 피니언기어의 단의 외측에 구비된 제1아이들지지수단과;First idler means provided on an outer side of the end of the pinion gear in which the sun gear is engaged;

상기 링기어가 치합된 피니언기어의 단의 내측에 구비된 제2아이들지지수단;Second idler support means provided inside an end of the pinion gear in which the ring gear is engaged;

으로 구성된 것을 특징으로 한다.Characterized in that consisting of.

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

도 3은 본 발명에 따른 유성기어장치의 일 실시예를 도시한 것으로서, 단차를 가진 피니언기어(1)와, 상기 피니언기어(1)의 각 단에 각각 치합되는 선기어(3) 및 링기어(5)와, 상기 선기어(3)가 치합된 피니언기어(1)의 단(1-1)의 외측에 구비된 제1아이들지지수단과, 상기 링기어(5)가 치합된 피니언기어(1)의 단(1-2)의 내측에 구비된 제2아이들지지수단으로 구성되어 있다.Figure 3 shows an embodiment of the planetary gear device according to the present invention, the pinion gear (1) having a step, the sun gear (3) and the ring gear (3) which are respectively engaged with each stage of the pinion gear (1) 5), a first idler supporting means provided on the outer side of the stage 1-1 of the pinion gear 1 in which the sun gear 3 is engaged, and the pinion gear 1 in which the ring gear 5 is engaged. It consists of a second idler support means provided on the inner side of (1-2).

즉, 상기 제1아이들지지수단과 제2아이들지지수단이 상기 단이 진 피니언기어(1)를 균형 있게 지지함으로써, 구조적으로 발생하는 모멘트에 의해 내구성이 저하되는 것을 방지하도록 한 것이다.That is, the first idler means and the second idler means support the staged pinion gear 1 in a balanced manner, thereby preventing the durability from being lowered due to the structurally generated moment.

여기서, 상기 제1아이들지지수단과 제2아이들지지수단은 다양하게 구성될 수 있는바, 도 3에서는 상기 제1아이들지지수단과 상기 제2아이들지지수단이 단순한 원주형으로 형성되어 중심축(C)에 대하여 공전과 자전이 가능하도록 설치되는 아이들기어(7)이다.Here, the first idler support means and the second idler support means may be configured in various ways, in FIG. 3, the first idler support means and the second idler support means are formed in a simple cylindrical shape and have a central axis (C). It is an idle gear (7) which is installed so that it can rotate and rotate.

상기한 바와 같은 아이들기어(7)는 각각 피니언기어(1)의 단에 치합된 상태로 하나는 중심축(C)의 기어(9)와의 사이에서 다른 하나는 외측의 벽면(W) 등에 형성되는 기어(11)와의 사이에서 자유로운 자전과 공전을 하여, 상기 선기어(3)와 피니언기어(1) 및 링기어(5)에 의해 구현되는 유성기어작용에 방해를 주지 않으면서, 단지 상기 피니언기어(1)의 회전축에 걸리게 되는 모멘트만을 지지하도록 하여, 유성기어장치의 내구성을 확보할 수 있게 한다.As described above, the idle gears 7 are engaged with the ends of the pinion gear 1, one of which is formed between the gear 9 of the central axis C and the other is formed on the outer wall surface W or the like. By freely rotating and revolving between the gears 11, the pinion gears (not to interfere with the planetary gear action implemented by the sun gear 3, the pinion gear 1 and the ring gear 5). Only the moment caught by the rotating shaft of 1) is supported to ensure the durability of the planetary gear device.

도 4에서는 상기한 바와 같은 개념을 확장한 유성기어장치의 예가 도시되어 있는데, 여기서 피니언기어(21)는 3단으로 단이 지어져 있고, 상기 피니언기어(21)의 각 단에는 선기어(23)와 링기어(25) 등이 치합되어 있고, 마찬가지로 선기어(23)와 링기어(25)가 치합된 피니언기어(21)의 맞은편에는 상기한 바와 같은 아이들기어(7)가 치합되어 상기 제1아이들지지수단과 제2아이들지지수단의 역할을 수행하도록 되어 있다.4 shows an example of a planetary gear device that extends the above concept, wherein the pinion gear 21 has three stages, and each stage of the pinion gear 21 has a sun gear 23 and The ring gear 25 and the like are engaged, and likewise, the above-mentioned idle gears 7 are engaged with each other on the opposite side of the pinion gear 21 where the sun gear 23 and the ring gear 25 are engaged with each other so that the first children are engaged. It is adapted to serve as the support means and the second child support means.

도 5와 도 6에는 본 발명의 또 다른 실시예가 도시되어 있다.5 and 6 show another embodiment of the present invention.

즉, 상기 제1아이들지지수단은 상기 피니언기어(1)에 치합되는 내접기어(31)가 형성되고 외측에는 베어링(32)이 형성된 내접링기어(33)이고, 상기 제2아이들지지수단은 상기 피니언기어(1,21)에 치합되는 외접기어(35)가 형성되고 내측에는 베어링(36)이 형성된 외접링기어(37)인 것이다.That is, the first idler means is an internal gear 31 formed with an internal gear 31 engaged with the pinion gear 1 and a bearing 32 formed on the outside thereof, and the second idler means is the second idler means. The external gear 35 to be engaged with the pinion gears 1 and 21 is formed and the external ring gear 37 having the bearing 36 formed therein.

이와 같은 경우에도 상기 내접링기어(33)와 외접링기어(37)는 상기 선기어와 피니언기어 및 링기어로 이루어지는 유성기어장치의 유성기어작용에는 아무런 영향을 주지 않으면서, 단지 상기 선기어와 링기어에 의해 피니언기어(1,21)의 회전축에 작용하게 되는 모멘트를 지지할 수 있게 되어, 유성기어장치로서 요구되는 충분한 내구성을 확보하도록 한다.Even in this case, the internal ring gear 33 and the external ring gear 37 have no influence on the planetary gear action of the planetary gear device including the sun gear, the pinion gear and the ring gear. By this, the moment acting on the rotation shafts of the pinion gears 1 and 21 can be supported to ensure sufficient durability required as the planetary gear device.

물론, 상기한 바와 같은 내접링기어(33)와 외접링기어(37) 및 상기 아이들기어(7)는 서로 적절히 대체될 수 있어서, 내접링기어(33)와 아이들기어(7)로 이루어지거나, 외접링기어(37)와 아이들기어(7)로 이루어지는 다양한 조합의 유성기어장치의 구성도 가능하다.Of course, the internal ring gear 33 and the external ring gear 37 and the idle gear 7 as described above may be appropriately replaced with each other, so that the internal ring gear 33 and the idle gear 7 is formed, The planetary gear device of various combinations of the external ring gear 37 and the idle gear 7 can also be configured.

이상과 같이 본 발명에 의하면, 단차를 가진 피니언기어를 채용하면서도 피니언기어의 회전축에 구조적인 모멘트가 작용하는 것에 대하여 적절히 지지하도록 함으로써 단차진 피니언기어를 구비한 유성기어장치가 다양한 동력 전달 장치에 충분한 내구성을 제공하면서 사용될 수 있도록 한다.As described above, according to the present invention, a planetary gear device having a stepped pinion gear is sufficient for various power transmission devices by adopting a pinion gear having a step, so as to properly support the structural moment acting on the rotation axis of the pinion gear. It can be used while providing durability.

Claims (4)

단차를 가진 피니언기어와;A pinion gear with a step; 상기 피니언기어의 각 단에 각각 치합되는 선기어 및 링기어와;A sun gear and a ring gear meshed with respective stages of the pinion gear; 상기 선기어가 치합된 피니언기어의 단의 외측에 구비된 제1아이들지지수단과;First idler means provided on an outer side of the end of the pinion gear in which the sun gear is engaged; 상기 링기어가 치합된 피니언기어의 단의 내측에 구비된 제2아이들지지수단;Second idler support means provided inside an end of the pinion gear in which the ring gear is engaged; 으로 구성된 것을 특징으로 하는 유성기어장치.Planetary gear device, characterized in that consisting of. 제1항에 있어서,The method of claim 1, 상기 제1아이들지지수단과 상기 제2아이들지지수단은 단순한 원주형으로 형성되어 중심축에 대하여 공전과 자전이 가능하도록 설치되는 아이들기어인 것을 특징으로 하는 유성기어장치.The first idler support means and the second idler support means is a planetary gear device, characterized in that the idle gear is formed in a simple cylindrical shape so as to be able to rotate and rotate about the central axis. 제1항에 있어서,The method of claim 1, 상기 제1아이들지지수단은 상기 피니언기어에 치합되는 내접기어가 형성되고 외측에는 베어링이 형성된 내접링기어인 것을 특징으로 하는 유성기어장치.The first idler support means is a planetary gear device, characterized in that the internal gear is meshed with the pinion gear is formed and the bearing is formed on the outside. 제1항에 있어서,The method of claim 1, 상기 제2아이들지지수단은 상기 피니언기어에 치합되는 외접기어가 형성되고 내측에는 베어링이 형성된 외접링기어인 것을 특징으로 하는 유성기어장치.The second idler support means is a planetary gear device, characterized in that the external gear is meshed with the pinion gear is formed and the bearing is formed inside.
KR1020020063459A 2002-10-17 2002-10-17 Planetary gear set KR20040034831A (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01164853A (en) * 1987-12-21 1989-06-28 Agency Of Ind Science & Technol Differential planet speed change gear
JPH01261536A (en) * 1987-12-03 1989-10-18 A & M Cousin Cie Etab Cousin Freres Backlash-less speed reduction mechanism
JPH0669492U (en) * 1993-03-08 1994-09-30 シンポ工業株式会社 Planetary gear reducer

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01261536A (en) * 1987-12-03 1989-10-18 A & M Cousin Cie Etab Cousin Freres Backlash-less speed reduction mechanism
JPH01164853A (en) * 1987-12-21 1989-06-28 Agency Of Ind Science & Technol Differential planet speed change gear
JPH0669492U (en) * 1993-03-08 1994-09-30 シンポ工業株式会社 Planetary gear reducer

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