KR20060011103A - Noise reduction structure for a balance shaft module - Google Patents

Noise reduction structure for a balance shaft module Download PDF

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Publication number
KR20060011103A
KR20060011103A KR1020040059787A KR20040059787A KR20060011103A KR 20060011103 A KR20060011103 A KR 20060011103A KR 1020040059787 A KR1020040059787 A KR 1020040059787A KR 20040059787 A KR20040059787 A KR 20040059787A KR 20060011103 A KR20060011103 A KR 20060011103A
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South Korea
Prior art keywords
balance shaft
housing
pair
balance
drive gear
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KR1020040059787A
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Korean (ko)
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KR100643952B1 (en
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조진우
김원규
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현대자동차주식회사
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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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C3/00—Shafts; Axles; Cranks; Eccentrics
    • F16C3/04—Crankshafts, eccentric-shafts; Cranks, eccentrics
    • F16C3/20—Shape of crankshafts or eccentric-shafts having regard to balancing
    • 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
    • F16F15/22—Compensation of inertia forces
    • F16F15/26—Compensation of inertia forces of crankshaft systems using solid masses, other than the ordinary pistons, moving with the system, i.e. masses connected through a kinematic mechanism or gear system
    • F16F15/264—Rotating balancer shafts
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2326/00—Articles relating to transporting
    • F16C2326/01—Parts of vehicles in general

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • General Details Of Gearings (AREA)

Abstract

본 발명은 한 쌍의 밸런스샤프트에 구비된 드라이브기어와 드리븐기어 사이의 치합상태를 엔진의 작동환경 변화에 무관하게 일정하게 유지할 수 있도록 하여, 드라이브기어와 드리븐기어의 사이에서 발생되는 래틀 노이즈가 저감될 수 있도록 하여, 엔진의 정숙성을 더욱 향상시키도록 한다.The present invention enables to maintain a constant state of engagement between the drive gear and the driven gear provided in the pair of balance shaft regardless of the change in the operating environment of the engine, thereby reducing rattle noise generated between the drive gear and the driven gear. To further improve engine quietness.

Description

밸런스샤프트모듈의 노이즈 저감구조{noise reduction structure for a balance shaft module}Noise reduction structure for a balance shaft module

도 1은 본 발명이 적용되는 밸런스샤프트모듈의 예를 도시한 도면,1 is a view showing an example of a balance shaft module to which the present invention is applied;

도 2는 본 발명에 따른 밸런스샤프트모듈의 노이즈 저감구조를 설명한 도면이다.2 is a view illustrating a noise reduction structure of a balance shaft module according to the present invention.

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

1; 크랭크샤프트 3; 드라이브기어One; Crankshaft 3; Drive gear

5; 밸런스샤프트 7; 드리븐기어5; Balance shaft 7; Driven Gear

9; 하우징 11; 저널캡9; A housing 11; Journal cap

13; 고정핀 15; 볼트구멍13; Pushpin 15; Bolt hole

17; 볼트탭 19; 체결볼트17; Bolt tab 19; Tightening Bolt

21; 반원형저널부 21; Semicircular Journal Division

본 발명은 엔진의 밸런스샤프트모듈의 노이즈 저감구조에 관한 것으로서, 보다 상세하게는 밸런스샤프트모듈을 이루는 밸런스샤프트들에 구비된 드라이브기어와 드리븐기어 사이의 래틀 노이즈 (rattle noise)를 저감시키도록 하는 기술에 관한 것이다.The present invention relates to a noise reduction structure of a balance shaft module of an engine, and more particularly, to reduce rattle noise between a drive gear and a driven gear provided in the balance shafts of the balance shaft module. It is about.

밸런스샤프트모듈은 엔진의 진동을 상쇄시켜서 엔진의 정숙성을 향상시키기 위한 것으로서, 크랭크샤프트와 연동되어 회전되는 밸런스샤프트들의 회전작용에 의해 엔진의 작동 중 발생되는 진동을 상쇄시킬 수 있도록 되어 있다.The balance shaft module is to improve the quietness of the engine by canceling the vibration of the engine, and is capable of canceling the vibration generated during the operation of the engine by the rotation of the balance shafts that rotate in conjunction with the crankshaft.

상기 밸런스샤프트들은 크랭크샤프트로부터 회전력을 직접 전달받는 것과, 이 회전력을 전달받는 것이 쌍을 이루고 있으며, 크랭크샤프트로부터 직접 회전력을 전달받는 밸런스샤프트에는 드라이브기어가 구비되어 있고, 다른 하나의 밸런스샤프트에는 상기 드라이브기어에 치합되어 회전력을 전달받는 드리븐기어가 구비되어 있다.The balance shafts are paired with the direct transmission of rotational force from the crankshaft and the transmission of the rotational force, and the balance shaft receiving the rotational force directly from the crankshaft is provided with a drive gear, and the other balance shaft has the above-mentioned. Driven gear is fitted to the drive gear and receives rotational force.

한편, 상기와 같은 한 쌍의 밸런스샤프트는 통상 알루미늄 재질의 하우징에 의해 지지되어 엔진의 하측에 장착되는 구조를 가지고 있다. On the other hand, the pair of balance shaft as described above is usually supported by the aluminum housing has a structure that is mounted to the lower side of the engine.

본 발명은 한 쌍의 밸런스샤프트에 구비된 드라이브기어와 드리븐기어 사이의 치합상태를 엔진의 작동환경 변화에 무관하게 일정하게 유지할 수 있도록 하여, 드라이브기어와 드리븐기어의 사이에서 발생되는 래틀 노이즈가 저감될 수 있도록 하여, 엔진의 정숙성을 더욱 향상시키도록 한 밸런스샤프트모듈의 노이즈 저감구조를 제공함에 그 목적이 있다.The present invention enables to maintain a constant state of engagement between the drive gear and the driven gear provided in the pair of balance shaft regardless of the change in the operating environment of the engine, thereby reducing rattle noise generated between the drive gear and the driven gear. It is an object of the present invention to provide a noise reduction structure of a balance shaft module that can be further improved to further improve the quietness of the engine.

상기한 바와 같은 목적을 달성하기 위한 본 발명 밸런스샤프트모듈의 노이즈 저감구조는The noise reduction structure of the balance shaft module of the present invention for achieving the above object is

하우징과;A housing;

상기 하우징에 평행하게 배치되어 드라이브기어와 드리븐기어에 의해 서로 회전력을 전달하도록 연결된 한 쌍의 밸런스샤프트와;A pair of balance shafts disposed in parallel to the housing and connected to each other to transmit rotational forces by a drive gear and a driven gear;

상기 한 쌍의 밸런스샤프트의 축간 거리를 규제할 수 있도록 한 쌍의 밸런스샤프트의 외주들을 감싸며, 상기 하우징 보다 열팽창계수가 작은 재질로 이루어진 저널캡;A journal cap surrounding outer circumferences of the pair of balance shafts to regulate the axial distance of the pair of balance shafts, the journal cap being made of a material having a smaller coefficient of thermal expansion than the housing;

을 포함하여 구성된 것을 특징으로 한다.Characterized in that configured to include.

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 1은 본 발명이 적용될 수 있는 밸런스샤프트모듈의 개념을 도시하고 있는바, 크랭크샤프트(1)의 하측에 크랭크샤프트(1)로부터 직접 회전력을 전달받을 수 있도록 설치되고 드라이브기어(3)가 일체로 구비된 밸런스샤프트(5)와, 이 밸런스샤프트(5)와 평행하게 배치되고 상기 드라이브기어(3)에 치합되는 드리븐기어(7)가 일체로 구비된 밸런스샤프트(5)와, 상기 한 쌍의 밸런스샤프트(5)를 지지하도록 하는 하우징(9)이 도시되어 있다.Figure 1 shows the concept of the balance shaft module to which the present invention can be applied, the lower side of the crankshaft (1) is installed to receive a direct rotational force from the crankshaft (1) and the drive gear (3) integrally A balance shaft 5 provided with a balance shaft 5 and a balance shaft 5 integrally provided with a driven gear 7 arranged in parallel with the balance shaft 5 and engaged with the drive gear 3, and the pair A housing 9 is shown to support the balance shaft 5 of the.

본 발명은 상기와 같은 하우징(9)과 한 쌍의 밸런스샤프트(5) 사이의 관계를 구속함에 의해 본 발명의 목적을 달성하도록 하는 것으로서, 도 2를 참조하면, 본 발명 실시예는 하우징(9)과; 상기 하우징(9)에 평행하게 배치되어 드라이브기어(3)와 드리븐기어(7)에 의해 서로 회전력을 전달하도록 연결된 한 쌍의 밸런스샤프트(5)와; 상기 한 쌍의 밸런스샤프트(5)의 축간 거리를 규제할 수 있도록 한 쌍의 밸런스샤프트(5)의 외주들을 감싸며, 상기 하우징(9) 보다 열팽창계수가 작은 재질로 이루어진 저널캡(11)을 포함하여 구성되어 있다.The present invention is intended to achieve the object of the present invention by constraining the relationship between the housing 9 and the pair of balance shafts 5 as described above. Referring to FIG. )and; A pair of balance shafts 5 arranged parallel to the housing 9 and connected to each other by a drive gear 3 and a driven gear 7 so as to transmit rotational forces; Wrapping the outer periphery of the pair of balance shaft (5) to regulate the interaxial distance of the pair of balance shaft (5), and comprises a journal cap 11 made of a material having a coefficient of thermal expansion smaller than the housing (9) It is composed.

통상 상기 하우징(9)은 알루미늄 재질로 이루어지므로, 상기 저널캡(11)은 알루미늄보다 열팽창계수가 작은 스틸재질로 이루어지도록 함이 바람직하다.Since the housing 9 is usually made of aluminum, the journal cap 11 is preferably made of a steel material having a smaller coefficient of thermal expansion than aluminum.

상기 저널캡(11)의 양단에는 저널캡(11)의 길이방향에 수직한 방향으로 돌출되어 상기 하우징(9)에 삽입되는 고정핀(13)이 일체로 구비되어 있어서, 상기 저널캡(11)이 상기 하우징(9)에 장착되면, 하우징(9)의 열팽창도 상기 저널캡(11)에 의해 억제될 수 있는 구조를 취하고 있다.Both ends of the journal cap 11 are integrally provided with a fixing pin 13 protruding in a direction perpendicular to the longitudinal direction of the journal cap 11 to be inserted into the housing 9, wherein the journal cap 11 is provided. When the housing 9 is mounted on the housing 9, the thermal expansion of the housing 9 can be suppressed by the journal cap 11.

물론, 상기 저널캡(11)에는 도시된 바와 같이 볼트구멍(15)이 구비되고 하우징(9)에는 그에 상응하는 볼트탭(17)이 형성되어 체결볼트(19)에 의해 저널캡(11)의 하우징(9)에 견고하게 고정할 수 있도록 되어 있으며, 상기 저널캡(11)에는 상기 두 밸런스샤프트(5)의 외주를 감싸는 반원형저널부(21)가 일체로 구비되어 있다.Of course, the journal cap 11 is provided with a bolt hole 15 as shown in the housing 9 and the corresponding bolt tab 17 is formed in the housing 9 by the fastening bolt 19 of the journal cap 11 It is to be firmly fixed to the housing (9), the journal cap 11 is provided with a semi-circular journal portion (21) integrally surrounding the outer circumference of the two balance shaft (5).

상기한 바와 같은 본 발명의 실시예에서는 상기 저널캡(11)을 상기 하우징(9)에 장착하여 고정하면, 상기 저널캡(11)이 상기 한 쌍의 밸런스샤프트(5)의 축간 거리를 적절하게 규제함으로써, 상기 밸런스샤프트(5)들에 설치된 드라이브기어(3)와 드리븐기어(7) 사이의 치합상태가 항상 일정하게 유지되게 된다.In the embodiment of the present invention as described above, when the journal cap 11 is mounted and fixed to the housing 9, the journal cap 11 properly adjusts the interaxial distance of the pair of balance shafts 5. By regulating, the engagement state between the drive gear 3 and the driven gear 7 provided in the balance shafts 5 is always kept constant.

특히, 엔진의 냉간 초기작동시와 충분한 운전시간이 경과하여 엔진의 온도 가 정상적인 상태가 되었을 때의 온도차에 의해 상기 드라이브기어(3)와 드리븐기어(7) 사이의 축간거리가 변화하는 것을 효과적으로 억제할 수 있으므로, 드라이브기어(3)와 드리븐기어(7)는 래틀 노이즈가 최소활 될 수 있는 치합상태를 그대로 유지할 수 있어서, 엔진의 다양한 운전상태에서, 상기 드라이브기어(3)와 드리븐기어(7)의 작동에 의한 래틀 노이즈는 최소화될 수 있다.In particular, it is possible to effectively suppress the change in the interaxial distance between the drive gear 3 and the driven gear 7 due to the temperature difference between the cold initial operation of the engine and when the engine temperature becomes normal after sufficient operating time has elapsed. Therefore, the drive gear 3 and the driven gear 7 can maintain the engagement state where the rattle noise can be minimized, and the drive gear 3 and the driven gear 7 can be maintained in various operating states of the engine. Rattle noise due to the operation of can be minimized.

또한, 상기한 바와 같은 엔진 작동의 내부적인 열변형 요인 이외에, 차량이 혹한지나, 혹서지 등에서 운행되는 경우와 같이 외부적인 요인에 의해 열변형이 초래되어 상기 밸런스샤프트(5)들의 드라이브기어(3)와 드리븐기어(7)의 치합상태에 영향을 줄 수 있는 경우에도, 상기 저널캡(11)은 비교적 작은 열팽창계수를 가지고 있으므로, 상기 하우징(9)의 열변형을 억제하고, 상기 두 밸런스샤프트(5)의 드라이브기어(3)와 드리븐기어(7)의 축간 거리를 일정하게 유지하여, 드라이브기어(3)와 드리븐기어(7)의 래틀노이즈가 최소화된 상태를 지속적으로 유지할 수 있게 하여, 결과적으로, 엔진의 정숙성을 향상시키는 데에 크게 기여하게 된다.Further, in addition to the internal thermal deformation factors of the engine operation as described above, thermal deformation is caused by external factors such as when the vehicle is operated in a cold or a cold place, so that the drive gears 3 of the balance shafts 5 may be caused. ), The journal cap 11 has a relatively small coefficient of thermal expansion, so that the thermal deformation of the housing 9 can be suppressed, and the two balance shafts can be affected. By keeping the axis distance between the drive gear 3 and the driven gear 7 of (5) constant, the rattle noise of the drive gear 3 and the driven gear 7 can be kept in a minimized state. As a result, it contributes greatly to improving engine quietness.

이상과 같이 본 발명에 의하면, 한 쌍의 밸런스샤프트에 구비된 드라이브기어와 드리븐기어 사이의 치합상태를 엔진의 작동환경 변화에 무관하게 일정하게 유지할 수 있도록 하여, 드라이브기어와 드리븐기어의 사이에서 발생되는 래틀 노이즈가 저감될 수 있도록 하여, 엔진의 정숙성을 더욱 향상시키도록 한다. As described above, according to the present invention, the engagement state between the drive gear and the driven gear provided in the pair of balance shafts can be kept constant regardless of the change in the operating environment of the engine, so that it occurs between the drive gear and the driven gear. Rattle noise can be reduced to further improve the quietness of the engine.

Claims (2)

하우징과;A housing; 상기 하우징에 평행하게 배치되어 드라이브기어와 드리븐기어에 의해 서로 회전력을 전달하도록 연결된 한 쌍의 밸런스샤프트와;A pair of balance shafts disposed in parallel to the housing and connected to each other to transmit rotational forces by a drive gear and a driven gear; 상기 한 쌍의 밸런스샤프트의 축간 거리를 규제할 수 있도록 한 쌍의 밸런스샤프트의 외주들을 감싸며, 상기 하우징 보다 열팽창계수가 작은 재질로 이루어진 저널캡;A journal cap surrounding outer circumferences of the pair of balance shafts to regulate the axial distance of the pair of balance shafts, the journal cap being made of a material having a smaller coefficient of thermal expansion than the housing; 을 포함하여 구성된 것을 특징으로 하는 밸런스샤프트모듈의 노이즈 저감구조.Noise reduction structure of the balance shaft module, characterized in that configured to include. 제1항에 있어서, 상기 저널캡은 The method of claim 1, wherein the journal cap 스틸재질로 이루어지고;Made of steel; 양단에 저널캡의 길이방향에 수직한 방향으로 돌출되어 상기 하우징에 삽입되는 고정핀이 일체로 구비된 것Fixing pins protruding in a direction perpendicular to the longitudinal direction of the journal cap at both ends are integrally provided 을 특징으로 하는 밸런스샤프트모듈의 노이즈 저감구조.Noise reduction structure of the balance shaft module, characterized in that.
KR1020040059787A 2004-07-29 2004-07-29 noise reduction structure for a balance shaft module KR100643952B1 (en)

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KR102011702B1 (en) 2017-05-11 2019-08-19 주식회사 미보기아 Balance Shaft Module

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JPH02217646A (en) * 1989-02-15 1990-08-30 Honda Motor Co Ltd Balancer shaft driving device of internal combustion engine
JP4091691B2 (en) 1998-08-12 2008-05-28 本田技研工業株式会社 Balance device for reciprocating piston engine
JP3738622B2 (en) 1999-09-28 2006-01-25 マツダ株式会社 Engine balancer equipment
JP4507347B2 (en) 2000-04-06 2010-07-21 アイシン精機株式会社 Engine balancer equipment
JP2002295591A (en) 2001-03-28 2002-10-09 Toyota Motor Corp Internal combustion engine

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