KR20020022968A - Viscous damper of crank shaft for vehicle - Google Patents

Viscous damper of crank shaft for vehicle Download PDF

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Publication number
KR20020022968A
KR20020022968A KR1020000055554A KR20000055554A KR20020022968A KR 20020022968 A KR20020022968 A KR 20020022968A KR 1020000055554 A KR1020000055554 A KR 1020000055554A KR 20000055554 A KR20000055554 A KR 20000055554A KR 20020022968 A KR20020022968 A KR 20020022968A
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KR
South Korea
Prior art keywords
case
viscous damper
crankshaft
silicone oil
damper
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Application number
KR1020000055554A
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Korean (ko)
Inventor
백충현
Original Assignee
이계안
현대자동차주식회사
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Priority to KR1020000055554A priority Critical patent/KR20020022968A/en
Publication of KR20020022968A publication Critical patent/KR20020022968A/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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
    • F16F15/16—Suppression of vibrations in rotating systems by making use of members moving with the system using a fluid or pasty material
    • F16F15/164—Suppression of vibrations in rotating systems by making use of members moving with the system using a fluid or pasty material characterised by manufacturing, e.g. assembling or testing procedures
    • 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
    • F16F15/12—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon
    • F16F15/1201—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon for damping of axial or radial, i.e. non-torsional vibrations
    • 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
    • F16F15/12—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon
    • F16F15/1203—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon characterised by manufacturing, e.g. assembling or testing procedures for the damper units
    • 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2222/00—Special physical effects, e.g. nature of damping effects
    • F16F2222/02—Special physical effects, e.g. nature of damping effects temperature-related
    • F16F2222/025—Cooling

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Pulleys (AREA)

Abstract

PURPOSE: A viscous fluid damper of a crankshaft for a vehicle is provided to prevent the degradation of the viscosity of the silicone oil and to easily emit the heat of a viscous fluid damper by integrally forming a cooling fin on the outer face of a damper case and guiding an airflow to the case. CONSTITUTION: A viscous fluid damper(10) comprises a case(12) and an inertia ring(16) installed around the silicone oil in the case. Many cooling fins(100) are integrally formed on the outer face of the case to guide the flow of air. When a crankshaft is applied with the torsional vibration, heat is generated by the friction of the inertial ring and the case. Then, the cooling fins guide the flow of air to the case. With the airflow, the case is cooled.

Description

자동차용 크랭크축의 점성 댐퍼{Viscous damper of crank shaft for vehicle}Viscous damper of crank shaft for vehicle

본 발명은 자동차용 크랭크축의 점성 댐퍼에 관한 것으로서, 더욱 상세하게는 크랭크축의 점성 댐퍼의 케이스 일측 외주면에 냉각핀을 일체로 형성하여, 점성댐퍼의 열방출 성능 및 내구력을 향상시킨 자동차용 크랭크축의 점성댐퍼에 관한것이다.The present invention relates to a viscous damper of an automotive crankshaft, and more particularly, by forming a cooling fin integrally on the outer peripheral surface of the case side of the viscous damper of the crankshaft, improving the heat release performance and durability of the viscous damper, It's about dampers.

통상적으로 자동차용 엔진의 크랭크축에는 주기적으로 회전력이 작용하므로 비틀림 진동이 생긴다. 이 비틀림 진동은 각 실린더의 크랭크 회전력이 클수록, 크랭크축이 길수록, 또는 강성이 작을수록 커지게 된다.Typically, the rotational force is periodically applied to the crankshaft of the engine for automobiles torsional vibration occurs. This torsional vibration becomes larger as the crank rotational force of each cylinder is larger, the longer the crankshaft, or the smaller the rigidity.

상기 비틀림 진동은 크랭크 축이 어느 회전수가 되면 축 자체의 고유진동과 공진을 일으키고 특히 심한 진동이 되면 승차감을 나쁘게 할 뿐만아니라, 타이밍 기어나 크랭크 축을 파손하는 원인이 되므로 가능한 방지하여야 한다.The torsional vibration should be prevented if the crankshaft is rotated at any rotational speed, causing natural vibrations and resonances of the shaft itself, and especially severe vibrations, which will not only make the ride worse, but also cause damage to the timing gear and the crankshaft.

따라서, 크랭크 축이 긴 엔진에서는 점성 댐퍼를 크랭크 축 전단의 크랭크 풀리와 일체로 조합시켜서 설치하고 있다.Therefore, in an engine with a long crankshaft, the viscous damper is provided in combination with the crank pulley at the front end of the crankshaft.

상기 점성댐퍼는 첨부한 도 3에 도시한 바와 같이 케이스와, 이 케이스(12)내에 실리콘 오일(14)을 사이에 두고 설치되는 이너시아 링(16)(inertia ring)으로 구성된 것으로서, 엔진 크랭크축의 비틀림 진동에너지를 상기 케이스와 이너시아 링 사이의 속도변동 차이를 이용하여 실리콘 오일의 전단에너지로 흡수하여 감쇠하게 된다.The viscous damper is composed of a case and an inertia ring 16 (inertia ring) which is provided in the case 12 with a silicone oil 14 interposed therebetween, and the torsion of the engine crankshaft. The vibration energy is absorbed and attenuated by the shear energy of the silicone oil using the difference in velocity between the case and the inertia ring.

이때, 이너시아 링과 케이스는 실리콘 오일을 사이에 두고 마찰력을 발생시켜 열이 발생되는 바, 이 열은 상기 케이스를 통하여 방출된다.In this case, the inertia ring and the case generate frictional force with the silicone oil interposed therebetween, so that heat is released through the case.

그러나, 상기 점성댐퍼의 케이스는 그 회전방향 이외에는 공기 유동이 거의 없기 때문에 방열능력이 부족하다. 따라서 실리콘의 점도 및 궁극적으로 실리콘 오일이 열화되어 댐퍼 성능 저하로 인한 크랭크샤프트계의 파손을 유발시키는 문제점이 있다.However, the case of the viscous damper is insufficient in heat dissipation capacity because there is little air flow other than the rotation direction. Therefore, there is a problem that the viscosity of the silicon and ultimately the silicone oil is deteriorated to cause breakage of the crankshaft system due to the damper performance degradation.

따라서, 본 발명은 상기와 같은 점을 감안하여, 점성댐퍼의 케이스 일측 외주면에 냉각용 핀을 돌출되게 일체로 성형하여, 공기의 유동을 점성댐퍼의 케이스로 유도되도록 함으로써, 점성댐퍼의 내부에서 발생하는 열을 케이스의 외부로 용이하게 방출시키는 동시에 실리콘 오일의 점도 저하와 열화를 방지할 수 있도록 한 자동차용 크랭크축의 점성 댐퍼를 제공하는데 그 목적이 있다.Accordingly, in view of the above, the present invention integrally forms a cooling fin to protrude to the outer peripheral surface of one side of the viscous damper so that the flow of air is led to the case of the viscous damper, thereby generating the inside of the viscous damper. It is an object of the present invention to provide a viscous damper for an automotive crankshaft which is capable of easily dissipating heat to the outside of the case and at the same time preventing the viscosity and degradation of the silicone oil.

도 1은 본 발명에 따른 자동차용 크랭크축의 점성 댐퍼를 나타내는 단면도,1 is a cross-sectional view showing a viscous damper of a crankshaft for automobiles according to the present invention,

도 2는 도 1의 A-A선 단면도,2 is a cross-sectional view taken along the line A-A of FIG.

도 3은 종래의 동차용 크랭크축의 점성 댐퍼를 나타내는 단면도.3 is a cross-sectional view showing a viscous damper of a conventional crankshaft for a vehicle.

<도면의 주요 부분에 대한 부호의 설명><Explanation of symbols for main parts of the drawings>

10 : 점성댐퍼 12 : 케이스10: viscous damper 12: case

14 : 실리콘 오일 16 : 이너시아 링14 silicone oil 16: inertia ring

100 : 냉각핀100: cooling fin

이하, 첨부도면을 참조로 본 발명을 상세하게 설명하면 다음과 같다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

상기한 목적을 달성하기 위한 본 발명은 케이스(12)와, 이 케이스(12)내에 실리콘 오일을 사이에 두고 설치되는 이너시아 링(16)(inertia ring)으로 구성된 자동차용 크랭크축의 점성댐퍼에 있어서, 상기 점성댐퍼(10)의 케이스(12) 일측 외주면에 공기의 흐름을 유도하는 다수의 냉각핀(100)을 등간격으로 일체 형성한 것을 특징으로 한다.In order to achieve the above object, the present invention provides a viscous damper for an automotive crankshaft composed of a case (12) and an inertia ring (16) provided with a silicone oil therebetween. A plurality of cooling fins 100 for inducing the flow of air to one side outer peripheral surface of the case 12 of the viscous damper 10 are formed integrally at equal intervals.

여기서 본 발명을 실시예로서, 첨부한 도면을 참조로 더욱 상세하게 설명하면 다음과 같다.Herein, the present invention will be described in more detail with reference to the accompanying drawings.

통상, 상기 점성댐퍼(10)는 토셔널 바이브레이션 댐퍼(Torsional vibration damper)라고도 불리우며, 첨부한 도 1에 도시한 바와 같이 크랭크 축(미도시됨)의 일측 끝단에 설치되는 크랭크 풀리와 일체로 조합되며 회전 가능하게 장착된다.Generally, the viscous damper 10 is also called a torsional vibration damper, and is integrally combined with a crank pulley installed at one end of a crank shaft (not shown) as shown in FIG. 1. It is rotatably mounted.

한편, 상기 점성댐퍼(10)의 구성을 보면, 외주면이 중공으로 된 원판형 케이스(12)와, 이 케이스(12)의 외주면 중공부에 실리콘 오일(14)을 사이에 두고 설치되는 이너시아 링(16)으로 구성되어 있다.On the other hand, the structure of the viscous damper 10, the outer peripheral surface of the disc-shaped case 12 is hollow, and the inertia ring which is provided with the silicone oil 14 between the hollow portion of the outer peripheral surface of the case 12 ( 16).

따라서, 크랭크 축이 비틀림 진동(회전방향에 대하여 정 또는 부의 큰 가속도)이 작용하게 되면, 점성댐퍼(10)는 회전하면서 그 내부의 고무재로 된 이너시아 링(16)이 변형되면서 이것에 의하여 상기 비틀림 진동이 감쇠되어진다.Therefore, when the crankshaft is subjected to torsional vibration (positive or negative large acceleration with respect to the rotational direction), the viscous damper 10 rotates while the inertia ring 16 made of rubber material is deformed, thereby causing the Torsional vibration is attenuated.

이때, 상기 이너시아 링(16)과 케이스(12)는 실리콘 오일(14)을 사이에 두고 마찰력을 발생시켜 열이 발생되는 바, 이 열은 대개 상기 케이스(12)를 통하여 외부로 방출되지만, 이 케이스(12)는 그 회전방향 이외에는 공기 유동이 거의 없기 때문에 방열능력이 부족하다.In this case, the inertia ring 16 and the case 12 generate frictional force with the silicone oil 14 therebetween, so that heat is generated, and the heat is usually released to the outside through the case 12. The case 12 lacks heat dissipation capacity because there is little air flow except for the rotational direction thereof.

여기서, 상기 점성댐퍼(10)의 케이스(12) 일측 외주면에 첨부한 도 2에 도시한 바와 같이, 나선형의 냉각핀(100)을 일체로 형성하는 바, 등간격을 유지하며 다수개를 형성한다.Here, as shown in FIG. 2 attached to the outer circumferential surface of one side of the case 12 of the viscous damper 10, the spiral cooling fins 100 are integrally formed, and the plurality of the plurality of viscous dampers 10 is formed to maintain a uniform interval. .

이에따라, 상기 점성댐퍼(10)의 케이스(12)에 형성된 냉각핀(100)에 의하여 공기의 흐름이 유도되고, 이 유도된 공기의 흐름에 의하여 케이스(12)가 용이하게 냉각되어, 케이스의 내구력을 향상시키게 된다.Accordingly, the flow of air is guided by the cooling fins 100 formed in the case 12 of the viscous damper 10, and the case 12 is easily cooled by the induced air flow, thereby providing durability of the case. Will improve.

이상에서 본 바와 같이, 본 발명에 따른 자동차용 크랭크 축의 점성댐퍼에 의하면, 점성댐퍼의 케이스 일측 외주면에 냉각용 핀을 돌출되게 일체로 성형하여, 공기의 유동을 점성댐퍼의 케이스로 유도되도록 함으로써, 점성댐퍼의 내부에서 발생하는 열을 케이스의 외부로 용이하게 방출시켜, 케이스의 내구력을 향상시킬 수 있고, 실리콘 오일의 점도 저하와 열화를 방지할 수 있는 효과가 있다.As described above, according to the viscous damper of the automotive crankshaft according to the present invention, by forming the cooling fins integrally with the outer peripheral surface of the case one side of the viscous damper, by inducing the flow of air to the case of the viscous damper, By dissipating heat generated inside the viscous damper to the outside of the case easily, the durability of the case can be improved, and the viscosity decrease and deterioration of the silicone oil can be prevented.

Claims (1)

케이스(12)와, 이 케이스(12)내에 실리콘 오일을 사이에 두고 설치되는 이너시아 링(16)(inertia ring)으로 구성된 자동차용 크랭크축의 점성댐퍼에 있어서,In a viscous damper for an automotive crankshaft composed of a case 12 and an inertia ring 16 provided with a silicone oil interposed therein, 상기 점성댐퍼(10)의 케이스(12) 일측 외주면에 공기의 흐름을 유도하는 다수의 냉각핀(100)을 등간격으로 일체 형성한 것을 특징으로 하는 자동차용 크랭크축의 점성댐퍼.The viscous damper of the vehicle crankshaft, characterized in that integrally formed a plurality of cooling fins 100 to induce the flow of air on the outer peripheral surface of the case 12 of the viscous damper 10 at equal intervals.
KR1020000055554A 2000-09-21 2000-09-21 Viscous damper of crank shaft for vehicle KR20020022968A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100836400B1 (en) * 2006-11-20 2008-06-09 현대자동차주식회사 Viscous damper of crank shaft for vehicle
KR100839739B1 (en) 2006-11-29 2008-06-19 쌍용자동차 주식회사 A damper for crank pulleys
DE102008053995A1 (en) * 2008-10-30 2010-05-12 Hasse & Wrede Gmbh Viscosity torsional vibration absorber or viscosity torsional mass damper for reducing torsional vibrations at crankshaft of lifting cylinder engine, has housing, where viscosity torsional vibration absorber is cooled
CN109139772A (en) * 2018-09-27 2019-01-04 江苏力汇振控科技有限公司 A kind of viscid fluid damper radiator
CN118066255A (en) * 2024-04-15 2024-05-24 山东光大机械制造有限公司 Circulation heat dissipation silicone oil damper for diesel engine

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55115456U (en) * 1979-02-09 1980-08-14
KR19980050627A (en) * 1996-12-21 1998-09-15 김영석 Torsional Vibration Damper for CRANKSHAFT DAMPER
JPH11153195A (en) * 1997-11-19 1999-06-08 Mitsubishi Motors Corp Viscous damper

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55115456U (en) * 1979-02-09 1980-08-14
KR19980050627A (en) * 1996-12-21 1998-09-15 김영석 Torsional Vibration Damper for CRANKSHAFT DAMPER
JPH11153195A (en) * 1997-11-19 1999-06-08 Mitsubishi Motors Corp Viscous damper

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100836400B1 (en) * 2006-11-20 2008-06-09 현대자동차주식회사 Viscous damper of crank shaft for vehicle
KR100839739B1 (en) 2006-11-29 2008-06-19 쌍용자동차 주식회사 A damper for crank pulleys
DE102008053995A1 (en) * 2008-10-30 2010-05-12 Hasse & Wrede Gmbh Viscosity torsional vibration absorber or viscosity torsional mass damper for reducing torsional vibrations at crankshaft of lifting cylinder engine, has housing, where viscosity torsional vibration absorber is cooled
DE102008053995B4 (en) * 2008-10-30 2010-12-09 Hasse & Wrede Gmbh Viscosity torsional vibration damper or viscosity torsional vibration damper for reducing torsional vibration
CN109139772A (en) * 2018-09-27 2019-01-04 江苏力汇振控科技有限公司 A kind of viscid fluid damper radiator
CN118066255A (en) * 2024-04-15 2024-05-24 山东光大机械制造有限公司 Circulation heat dissipation silicone oil damper for diesel engine

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