KR20020043053A - Planetary gear type reducer - Google Patents

Planetary gear type reducer Download PDF

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Publication number
KR20020043053A
KR20020043053A KR1020000072516A KR20000072516A KR20020043053A KR 20020043053 A KR20020043053 A KR 20020043053A KR 1020000072516 A KR1020000072516 A KR 1020000072516A KR 20000072516 A KR20000072516 A KR 20000072516A KR 20020043053 A KR20020043053 A KR 20020043053A
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South Korea
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gear
planetary gear
planetary
gears
reducer
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KR1020000072516A
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Korean (ko)
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임종준
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임종준
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Priority to KR1020000072516A priority Critical patent/KR20020043053A/en
Publication of KR20020043053A publication Critical patent/KR20020043053A/en

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    • 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
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
    • F16H1/34—Toothed gearings for conveying rotary motion with gears having orbital motion involving gears essentially having intermeshing elements other than involute or cycloidal teeth

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Retarders (AREA)

Abstract

PURPOSE: A reducer of a planetary gear is provided to reduce the abrasion and noise of teeth of gears and prevent the concentration of load to a linear gear by simultaneously driving the gears in the cycloid shape with rollers pins through the continuous rolling motion. CONSTITUTION: A reducer of a planetary gear includes a linear gear(10) receiving rotation force of a motor, a plurality of planetary gears engaged with the linear gear, a ring gear(30) engaged with the planetary gears(20), a carrier(40) coupled with the planetary gears for power transmission and incorporated in a gear box by a bearing together with the linear gear, wherein the linear gear and the planetary gears are formed in the cycloid tooth shape, and the ring gear is mounted with a plurality of roller pins(31) in insertion grooves(32) formed in the edges of the ring gear by a predetermined interval for the engaged with the inner tooth surface of the planetary gear.

Description

유성기어 감속기 {PLANETARY GEAR TYPE REDUCER}Planetary Gear Reducer {PLANETARY GEAR TYPE REDUCER}

본 발명은 유성기어 감속기에 관한 것으로, 더 상세히는 자전 및 공전되는기어가 연속 구름운동으로 맞물려 회전할 수 있도록 함과 아울러 기어의 동시치합률을 극대화함으로써 원활한 동력전달이 되도록 한 유성기어 감속기에 관한 것이다.The present invention relates to a planetary gear reducer, and more particularly, to a planetary gear reducer that is capable of rotating and rotating gears interlocked in a continuous rolling motion, while maximizing the co-matching ratio of gears for smooth power transmission. will be.

통상의 유성기어 감속기에는 인벌루트치형(involute tooth)으로된 기어가 사용되고 있는 실정이다.In the conventional planetary gear reducer, a gear made of an involute tooth is used.

도 1에 도시한 바와 같이, 유성기어 감속기는 모터의 회전력을 입력받는 선기어(1)에 다수개의 유성기어(2)가 치합되고, 상기 유성기어(2)에 링기어(3)가 치합되며 상기 유성기어(2)에는 동력전달되는 캐리어(4)이 결합되어 회전력을 출력하고, 상기 선기어(1)와 캐리어(4)은 베어링(5)에 의해 기어박스(6)에 내장된다.As shown in FIG. 1, the planetary gear reducer is fitted with a plurality of planetary gears 2 to the sun gear 1 that receives the rotational force of the motor, and a ring gear 3 to the planetary gear 2 is engaged. The planetary gear 2 is coupled to the carrier 4 to which power is transmitted to output the rotational force, and the sun gear 1 and the carrier 4 are embedded in the gear box 6 by the bearing 5.

이와 같은 구조를 갖는 종래의 유성기어 감속기는 동력을 받은 선기어(1)에 통상3개의 유성기어(2)가 치합되고 상기 유성기어(2)는 링기어(3)의 내치면에 치합되고 상기 유성기어(2)에 결합된 캐리어(4)에 감속된 동력이 전달되는 것이다.In the conventional planetary gear reducer having such a structure, three planetary gears 2 are generally joined to a powered sun gear 1, and the planetary gears 2 are meshed with an inner surface of a ring gear 3 and the planetary gears are engaged. The decelerated power is transmitted to the carrier 4 coupled to the gear 2.

그러나, 종래의 유성기어 감속기에 사용되는 기어들은 인벌류트 치형으로서 기어들이 치합되는 치면이 선접촉되므로 기어들이 부드럽게 맞물려 회전하지 못하는 상태가 지속되며 상기 선기어(1)에 부하가 집중되어 소음 심하게 발생되고 치형마모가 진행되어 동시치합률이 낮아져 원활한 동력전달이 되지 못하는 문제점이 있다.However, since the gears used in the conventional planetary gear reducer are involute teeth and the tooth surfaces in which the gears are meshed are in line contact, the gears are not smoothly engaged and do not rotate. There is a problem in that the tooth wear progresses and the simultaneous toothing rate is lowered, thereby preventing smooth power transmission.

그리고, 상기 기어들의 잇수가 과다하게 구비되어 기어세이퍼 가공시에 정밀성이 요구되어 가공시간이 많이 걸리는 문제점이 있었다.In addition, the number of teeth of the gears is excessively provided, so that precision is required during the machining of the gears.

상기와 같은 문제점을 착안하여 안출된 것으로, 본 발명은 자전 및 공전되는 기어들이 부드럽게 맞물려 회전할 수 있도록 하면서 동시치합률을 극대화하여 원활하게 동력전달되도록 한 유성기어 감속기를 제공하기 위한 것이다.The present invention has been made in view of the above problems, and the present invention is to provide a planetary gear reducer to smoothly transfer power while maximizing the simultaneous registration rate while allowing the rotating and idle gears to rotate smoothly.

도 1은 종래의 유성기어 감속기의 측단면도.1 is a side cross-sectional view of a conventional planetary gear reducer.

도 2는 도 1에 도시된 유성기어 감속기의 구성 및 작동을 설명하기위한 정단면도.Figure 2 is a front sectional view for explaining the configuration and operation of the planetary gear reducer shown in FIG.

도 3은 본 발명의 유성기어 감속기의 측단면도.Figure 3 is a side cross-sectional view of the planetary gear reducer of the present invention.

도 4는 본 발명의 유성기어 감속기의 구성 및 작동을 설명하기위한 정단면도.Figure 4 is a front sectional view for explaining the configuration and operation of the planetary gear reducer of the present invention.

도 5은 본 발명의 유성기어 감속기를 2단으로 설치한 상태의 측단면도.Figure 5 is a side cross-sectional view of the planetary gear reducer of the present invention installed in two stages.

*도면의 주요 부분에 대한 부호의 설명** Description of the symbols for the main parts of the drawings *

10 : 선기어 20 : 유성기어 30 : 링기어10: sun gear 20: planetary gear 30: ring gear

31 : 롤러핀 32 : 삽입홈 40 : 캐리어31: roller pin 32: insertion groove 40: carrier

이하 본발명인 유성기어 감속기에 도면에 상세한 설명은 다음과 같다.Hereinafter, a detailed description of the planetary gear reducer of the present invention is as follows.

도 3는 본 발명의 본 발명의 유성기어 감속기의 측단면도이고, 도 4는 본 발명의 유성기어 감속기의 구성 및 작동을 설명하기위한 정단면도이며, 도 5은 본 발명의 유성기어 감속기를 2단으로 설치한 상태의 측단면도이다.Figure 3 is a side cross-sectional view of the planetary gear reducer of the present invention, Figure 4 is a front sectional view for explaining the configuration and operation of the planetary gear reducer of the present invention, Figure 5 is a two-speed planetary gear reducer of the present invention Side sectional view of the installed state.

본 발명에 사용되는 사이클로이드 치형(cycloid tooth)에 대해 간략히 설명하며, 피치원상에 그려진 에피사이클로이드(epicycloid)를 이끝으로 하고, 하이포사이클로이드(hypocycloide)를 이뿌리로 하는 형태의 이로써, 이 치형을 이용한 기어를 사이클로이드 기어라 하고, 정밀기계나 계측용의 소형 기어에 이용된다.The cycloid tooth used in the present invention will be briefly described, and the epicycloid drawn on the pitch circle is used as the tip and the hypocycloid is rooted. It is called a cycloid gear and is used for small gears for precision machinery and measurement.

본 발명은 모터의 회전력을 입력받는 선기어(10)에 다수개의 유성기어(20)가 치합되고 상기 유성기어(20)에 링기어(30)가 치합되며 상기 유성기어(20)에는 동력전달되는 캐리어(40)가 결합되어 회전력을 출력하고, 상기 선기어(10)와 캐리어(40)는 베어링(50)에 의해 기어박스(60)에 내장됨에 있어서, 상기 선기어(10) 및 유성기어(20)는 사이클로이드 치형으로 형성된 것으로 구성된다.According to the present invention, a plurality of planetary gears 20 are engaged with the sun gear 10 that receives the rotational force of the motor, a ring gear 30 is engaged with the planetary gear 20, and a carrier is power-transmitted to the planetary gear 20. 40 is coupled to output the rotational force, the sun gear 10 and the carrier 40 is embedded in the gearbox 60 by the bearing 50, the sun gear 10 and the planetary gear 20 is And formed into a cycloid tooth.

또한, 상기 링기어(30)의 가장자리내에 다수의 삽입홈(32)에 복수개 롤러핀(31)이 결합되어 기어박스(60)에 고정되고 상기 롤러핀(31)은 상기 유성기어의 내치면에 맞물려 회전되도록 되어 있다.In addition, a plurality of roller pins 31 are coupled to the plurality of insertion grooves 32 in the edge of the ring gear 30 to be fixed to the gearbox 60, and the roller pins 31 are provided on the inner surface of the planetary gear. It is intended to be engaged and rotated.

또, 상기 유성기어(20)에 치합되는 롤러핀(31)의 치면이 사이클로이드 치형으로 되어 있다.Moreover, the tooth surface of the roller pin 31 meshed with the said planetary gear 20 is a cycloid tooth.

상기 선기어(10) 재질은 고탄소크롬 베어링강으로 충격과 내마모성이 우수하여 반영구적으로 사용이 가능하다.The sun gear 10 is made of high carbon chromium bearing steel, and is excellent in impact and wear resistance.

이와 같이 구성된 본 발명의 작동방법은 다음과 같다.The operation method of the present invention configured as described above is as follows.

모터의 회전력을 입력받아 자전하는 선기어(10)에 공전하는 다수개의 유성기어(20)가 치합되어 회전하고 상기 링기어(30)의 다수개의 삽입홈(32)에 결합된 다수개 롤러핀(31)이 상기 유성기어(20)와 내치면에 치합되어 기어박스(60)에 고정되고, 상기 유성기어(20)에 결합된 캐리어(40)에 감속된 동력이 전달되도록 구동되는 것이다.A plurality of roller pins 31 coupled to the plurality of insertion grooves 32 of the ring gear 30 are rotated by coupling a plurality of planetary gears 20 revolved in the sun gear 10 to rotate by receiving the rotational force of the motor. ) Is engaged with the planetary gear 20 and the inner tooth surface is fixed to the gearbox 60, and is driven to transmit the reduced power to the carrier 40 coupled to the planetary gear 20.

도 3의 도시된 바와 같이 사이클로이드 치형으로 형성된 기어들이 부드럽게 회전되므로 소음과 마찰이 적게 발생되고 기어들의 잇수가 적게 구비된 선기어(10),유성기어(20) 및 링기어(30)가 동시에 구동되면서 치형과 치형이 맞물림이 자연스럽게 면접촉되어 부하가 집중되는 것을 방지할 수 있어 기어의 동시치합률을 극대화 시킬 수 있는 것이다.As shown in FIG. 3, since the gears formed in the cycloid tooth are rotated smoothly, noise and friction are less generated, and the sun gear 10, the planetary gear 20, and the ring gear 30, which are provided with fewer teeth, are simultaneously driven. The engagement between the teeth and teeth naturally prevents the load from concentrating, thus maximizing the simultaneous engagement rate of the gears.

이와 같이 기어의 동시치합률이 극대화되므로 원하는 감속비를 얻을 수 있고, 도 5에 도시된 바와 같이 2단 또는 다단으로 설치하여 사용할 수 있는 것이다.As such, the gear ratio is maximized, so that the desired reduction ratio can be obtained, and as shown in FIG. 5, it can be installed in two stages or multiple stages.

또한, 상기 선기어(10)와 유성기어(20)에 결합된 캐리어(40)가 동일선상에 놓이며 동시치합률이 높아져 동력전달이 원활히 되는 효과가 있다.In addition, the carrier 40 coupled to the sun gear 10 and the planetary gear 20 is placed on the same line, and the synchronizing ratio is increased, thereby facilitating power transmission.

이상에서 설명한 바와 같이, 본 발명은 사이클로드 치형의 기어와 롤러핀(31)이 맞물려 연속 구름운동으로 동시에 구동되어 치형의 마모와 소음이 적게 발생되고 선기어(10)에 부하가 집중되는 것이 방지되어 기어의 동시 치합률이 극대화되므로 원활한 동력전달시킬 수 있는 효과가 있다.As described above, in the present invention, the gear of the rod rod tooth and the roller pin 31 are engaged at the same time by continuous rolling motion so that the wear and noise of the tooth are less generated and the load is prevented from being concentrated on the sun gear 10. Simultaneous meshing ratio of the gears is maximized, so that there is an effect of smooth power transmission.

또한, 기어가 맞물리는 잇수가 적게 구비되므로 가공조립이 용이하고, 제조원가 저렴한 장점이 있다.In addition, since the number of gears engaged with the gear is provided less, it is easy to assemble and process, there is an advantage of low manufacturing cost.

또, 상기 선기어(10)의 재질이 고탄소 크롬 베어링강 임으로 충격과 내마모성이 우수하여 반영구적으로 사용이 가능한 효과가 있다.In addition, since the material of the sun gear 10 is a high carbon chromium bearing steel, there is an effect that can be used semi-permanently because of excellent impact and wear resistance.

Claims (3)

모터의 회전력을 입력받는 선기어(10)에 다수개의 유성기어(20)가 치합되고 상기 유성기어(20)에 링기어(30)가 치합되며 상기 유성기어(20)에는 동력전달되는 캐리어(40)가 결합되어 회전력을 출력하고, 상기 선기어(10)와 캐리어(40)는 베어링(50)에 의해 기어박스(60)에 내장되는 유성기어 감속기에 있어서;A plurality of planetary gears 20 are meshed with the sun gear 10 that receives the rotational force of the motor, a ring gear 30 is meshed with the planetary gear 20, and the carrier 40 is power-transmitted to the planetary gear 20. Is coupled to output a rotational force, the sun gear 10 and the carrier 40 is a planetary gear reducer is built in the gearbox 60 by a bearing (50); 상기 선기어(10) 및 유성기어(20)가 사이클로이드 치형으로 형성된 것을 특징으로 하는 유성기어 감속기.The sun gear 10 and the planetary gear 20 is a planetary gear reducer, characterized in that formed in a cycloid tooth. 제1항에 있어서, 상기 링기어(30)의 가장자리내에 다수의 삽입홈(32)에 롤러핀(31)이 일정 간격으로 설치되어 상기 유성기어(20)의 내치면에 맞물리도록한 것을 특징으로 하는 유성기어 감속기.The method of claim 1, wherein the roller pin 31 is provided in a plurality of insertion grooves 32 in the edge of the ring gear 30 at regular intervals to engage the inner surface of the planetary gear 20. Planetary gear reducer. 제2항에 있어서, 상기 링기어(30)의 치면이 사이클로이드 치형으로 형성된 것을 특징으로 유성기어 감속기.The planetary gear reducer according to claim 2, wherein the tooth surface of the ring gear (30) is formed into a cycloid tooth.
KR1020000072516A 2000-12-01 2000-12-01 Planetary gear type reducer KR20020043053A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012060610A2 (en) * 2010-11-01 2012-05-10 주식회사 에스비비테크 Hybrid reducer
KR101280761B1 (en) * 2011-12-09 2013-07-05 현대위아 주식회사 Device for driving rear wheel of hybrid vehicle using longitudinal motor
KR101451263B1 (en) * 2013-11-08 2014-10-16 주식회사 현대케피코 apparatus for variably adjusting the control times of gas valves of an internal combustion engine
KR101699465B1 (en) * 2015-10-02 2017-01-24 창원대학교 산학협력단 Pinwheel gear set having cam pinion of tooth modification

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012060610A2 (en) * 2010-11-01 2012-05-10 주식회사 에스비비테크 Hybrid reducer
WO2012060610A3 (en) * 2010-11-01 2012-06-28 주식회사 에스비비테크 Hybrid reducer
KR101280761B1 (en) * 2011-12-09 2013-07-05 현대위아 주식회사 Device for driving rear wheel of hybrid vehicle using longitudinal motor
KR101451263B1 (en) * 2013-11-08 2014-10-16 주식회사 현대케피코 apparatus for variably adjusting the control times of gas valves of an internal combustion engine
KR101699465B1 (en) * 2015-10-02 2017-01-24 창원대학교 산학협력단 Pinwheel gear set having cam pinion of tooth modification

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