KR20140062628A - Bush structure - Google Patents

Bush structure Download PDF

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Publication number
KR20140062628A
KR20140062628A KR1020120128703A KR20120128703A KR20140062628A KR 20140062628 A KR20140062628 A KR 20140062628A KR 1020120128703 A KR1020120128703 A KR 1020120128703A KR 20120128703 A KR20120128703 A KR 20120128703A KR 20140062628 A KR20140062628 A KR 20140062628A
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South Korea
Prior art keywords
bush
bracket
pipe
vibration
present
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KR1020120128703A
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Korean (ko)
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최원도
이병화
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현대자동차주식회사
주식회사 파브코
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Priority to KR1020120128703A priority Critical patent/KR20140062628A/en
Publication of KR20140062628A publication Critical patent/KR20140062628A/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
    • F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
    • F16F13/04—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper
    • F16F13/06—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper
    • F16F13/08—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper the plastics spring forming at least a part of the wall of the fluid chamber of the damper
    • F16F13/14—Units of the bushing type, i.e. loaded predominantly radially
    • 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
    • F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
    • F16F13/04—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper
    • F16F13/06—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper
    • F16F13/08—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper the plastics spring forming at least a part of the wall of the fluid chamber of the damper
    • F16F13/14—Units of the bushing type, i.e. loaded predominantly radially
    • F16F13/1463—Units of the bushing type, i.e. loaded predominantly radially characterised by features of passages between working chambers
    • 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
    • F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
    • F16F13/04—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper
    • F16F13/06—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper
    • F16F13/08—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper the plastics spring forming at least a part of the wall of the fluid chamber of the damper
    • F16F13/14—Units of the bushing type, i.e. loaded predominantly radially
    • F16F13/16—Units of the bushing type, i.e. loaded predominantly radially specially adapted for receiving axial loads

Abstract

The present invention relates to a bush structure. The bush structure includes: a cylindrical first bush (100) which is penetrated by a pipe in the center (110); a first bracket covering the outer peripheral surface of the first bush (100); a rod-shaped second bracket (300) which couples to the both ends of the pipe (110) of the first bush (100); and a cylindrical second bush which extends from the second bracket (300). An air chamber is used to increase the amount of the flowing air to minimize the NVH performance and the lifting motion of a powertrain to enhance the marketability and safety of the product.

Description

부시 구조{Bush structure}Bush structure {Bush structure}

본 발명은 부시 구조에 관한 것으로서, 특히 에어챔버 사이에서 공기를 유동시킴으로써 댐핑 작용을 구현하기 위한 부시 구조에 관한 것이다.
The present invention relates to a bush construction, and more particularly to a bush construction for implementing damping action by flowing air between air chambers.

일반적으로 자동차가 운행함에 따라서 소음 및 진동이 필수적으로 수반되는데, 근래 차량에 적용되는 기술이 점차 발전하고 저진동 및 저소음에 대한 소비자의 요구가 증대됨에 따라, 차량에서 발생하는 충격, 진동, 소음 등을 분석하여 승차감을 극대화시키기 위한 기술 개발이 계속되고 있다.In general, noise and vibration are essentially accompanied by the driving of automobiles. Recently, as the technologies applied to vehicles are gradually developed and consumers' demands for low vibration and low noise are increased, shocks, vibrations, and noises And development of technologies to maximize ride comfort is continuing.

자동차에서 발생하는 진동의 가장 큰 원인은 엔진의 진동과 주행 중 노면으로부터 전달되는 충격이다.The most common cause of vibration in automobiles is the vibration transmitted from the engine and the impact from the road surface while driving.

상용 구간에서 발생하는 진동이 차체의 고유진동수와 일치하면 공진(resonance)이 일어나 큰 진동과 충격이 발생하기 때문에, 차량에서 발생하는 진동이 차체의 고유진동수를 피해서 제작하여야 한다. 진동의 종류로는 정지 간의 진동 및 주행 시의 진동이 있으며, 정지간의 진동은 공회전시 주로 발생되는 진동으로 휠 및 차체 바닥의 상하 진동(shake)을 말하고 오토매틱 차량이 수동차량보다 심각하게 나타나며, 주행 시의 진동으로는 차량 주행 시 발생되는 휠에서의 상하 방향 진동과 원주 방향 진동(shimmy) 및 차체 바닥의 상하 방향 진동(shake) 등이 있다.If the vibration occurring in the commercial section coincides with the natural frequency of the vehicle body, resonance occurs and a large vibration and shock are generated. Therefore, the vibration generated in the vehicle should be avoided from the natural frequency of the vehicle body. The vibrations are the vibration between stops and the vibration during driving. The vibration between the stops refers to the vibrations that occur mainly during idling and refers to the shake of the wheel and the floor of the car body. The automatic vehicle is more serious than the manual vehicle, The vibrations of the city include vertical vibration, circumferential vibration (shimmy), and vertical vibration (shake) of the vehicle body when the vehicle is traveling.

현가계 또는 현가장치(Suspension)는 차축과 차체를 연결하여, 차량이 주행할 때 차축이 지면에서 받는 진동이나 충격이 직접 전달되지 않도록 하여 차체의 손상을 방지하고 탑승자의 승차감을 좋게 하여주는 장치이다. 이러한 현가계의 체결부위나 연결부위에는 각각 부시(bush)가 연결되어 있다. 부시는 차량이 진동을 받거나 차체가 기울어짐에 따른 현가계의 변형을 최소화하기 위하여 설치되며, 연결부의 압축 또는 인장에 따라 부시가 변형 및 회복되어 그 진동 및 기울어짐을 줄여준다.The suspension system or Suspension connects the axle and the vehicle body to prevent the vehicle's body from being damaged by preventing the vibration or shock from being transmitted from the ground to the axle when the vehicle is traveling, thereby improving the riding comfort of the passenger . A bush is connected to the fastening portion and the connecting portion of the current pedestal, respectively. The bushes are installed to minimize the deformation of the suspension system as the vehicle is vibrated or tilted, and the bushes are deformed and recovered by compression or tensioning of the joints to reduce their vibration and tilting.

그러나, 종래에는 실제 차량에서 NVH성능을 위해 마운트의 스프링특성을 낮게 설정하기 때문에 현가장치의 거동과 파워트레인의 거동과의 위상차 발생으로 차량 진행방향으로 출렁이는 문제(세컨더리 라이드)가 발생되고, 또한 마운트의 스프링특성을 높게 설정하면 승차감이 저하되는 문제점이 있었다.However, conventionally, since the spring characteristic of the mount is set to be low for NVH performance in an actual vehicle, a phase difference between the behavior of the suspension device and the behavior of the power train causes a problem (secondary ride) Also, if the spring characteristic of the mount is set high, there is a problem that ride comfort is deteriorated.

본 발명은 상기의 문제점을 해소하기 위한 부시 구조에 관한 것으로서, 특히 에어챔버 사이에서 공기를 유동시킴으로써 댐핑 작용을 구현하기 위한 것을 목적으로 한다.
The present invention relates to a bushing structure for solving the above problems, and in particular, to provide a damping effect by flowing air between air chambers.

이러한 본 발명은 중앙에 파이프가 관통 형성되는 원통 형상의 제1부시와; 상기 제1부시 외주면을 커버하는 제1브래킷과; 상기 제1부시의 파이프 양단에 체결되는 로드 형상의 제2브래킷과; 상기 제2브래킷으로부터 연장 형성되는 원통 형상의 제2부시;를 포함함으로써 달성된다.According to the present invention, there is provided an air conditioner comprising: a first bush having a cylindrical shape and having a pipe formed at a center thereof; A first bracket covering the outer surface of the first bush; A rod-shaped second bracket fastened to both ends of the pipe of the first bush; And a cylindrical second bushing extending from the second bracket.

이때, 상기 제1부시 외주면에는 절곡홈이 형성되어 상기 제1부시와 제1브래킷 사이에 에어챔버를 형성시키도록 하는 것이 바람직하다.At this time, a bending groove is formed in the outer surface of the first bush to form an air chamber between the first bush and the first bracket.

또한, 상기 제1부시 외주면 일단에는 노즐이 장착되도록 하는 것이 바람직하다.In addition, it is preferable that a nozzle is mounted at one end of the outer surface of the first bush.

한편, 상기 파이프는 중간부가 구 형상으로 형성되도록 하는 것이 바람직하다.Meanwhile, it is preferable that the intermediate portion is formed in a spherical shape.

이때, 상기 제1부시는 고무재질로 형성되도록 하는 것이 바람직하다.
At this time, the first bush is preferably made of a rubber material.

이상과 같은 본 발명은 공기의 유동량을 챔버를 통해 증대시킴으로써 NVH성능 및 파워트레인 상하 거동을 최소화하여 상품성과 안전성을 향상시키는데 효과가 있는 발명인 것이다.
The present invention as described above is an invention having an effect of improving the commercial performance and safety by minimizing the NVH performance and the up-down behavior of the power train by increasing the amount of air flow through the chamber.

도 1은 본 발명의 부시구조를 도시하는 도면,
도 2는 본 발명의 부시구조를 도시하는 분해사시도,
도 3의 (a)는 본 발명의 부시구조의 A-A선을 도시하는 단면도,
도 3의 (b)는 본 발명의 부시구조의 B-B선을 도시하는 단면도,
도 4는 본 발명의 부시구조 내부의 공기유동 방향 및 입력하중 방향을 도시하는 단면도,BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a diagram illustrating the structure of a bush of the present invention,
2 is an exploded perspective view showing a bush structure of the present invention,
3 (a) is a cross-sectional view showing an AA line of the bush structure of the present invention,
3 (b) is a cross-sectional view showing the BB line of the bush structure of the present invention,
Fig. 4 is a sectional view showing an air flow direction and an input load direction inside the bush structure of the present invention, Fig.

본 발명의 실시예를 첨부 도면을 참조하여 상세히 설명하면 다음과 같다.DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

본 발명의 부시 구조는 도 1 내지 도 4에 도시된 바와 같이, 원통 형상의 제1부시(100)와, 제1부시(100)를 커버하는 제1브래킷(200)과, 제1부시(100)와 체결되는 제2브래킷(300)과, 제2브래킷(300)과 연결되는 제2부시(310)를 포함한다.1 to 4, the bush structure of the present invention includes a cylindrical first bush 100, a first bracket 200 covering the first bush 100, a first bush 100 And a second bush 310 connected to the second bracket 300. The second bracket 300 is connected to the first bracket 300 and the second bracket 300,

도 1 및 도 2에 도시된 바와 같이, 제1부시(100)는 중앙에 파이프(110)가 관통 형성된 원통 형상으로 이루어진다.As shown in FIGS. 1 and 2, the first bush 100 has a cylindrical shape with a pipe 110 passing through the center thereof.

제1브래킷(200)은 중공이 형성된 원통 형상으로 이루어져, 내부에 제1부시(100)가 삽입되게 한다. 즉, 제1부시(100) 외주면을 제1브래킷(200)이 커버하게 된다.The first bracket 200 has a hollow cylindrical shape and allows the first bushing 100 to be inserted therein. That is, the first bracket 200 covers the outer peripheral surface of the first bush 100.

이때, 제1부시(100) 외주면에는 절곡홈(미도시)이 형성되도록 하여 제1부시(100)와 제1브래킷(200) 사이에 에어챔버(101)가 형성되어 공기 유입에 따라 제1부시(100)가 이동하여 댐핑이 가능하게 한다.At this time, an air chamber 101 is formed between the first bush 100 and the first bracket 200 so that a bending groove (not shown) is formed on the outer circumferential surface of the first bush 100, (100) moves to enable damping.

한편, 도 3 및 도 4에 도시된 바와 같이 제1부시(100)의 파이프(110) 중간부는 구 형상으로 돌출 형성되어 공기 유입에 따른 제1부시(100)의 이동이 가능하게 한다.3 and 4, the middle portion of the pipe 110 of the first bush 100 protrudes in a spherical shape to enable movement of the first bush 100 according to the inflow of air.

또한, 제1부시(100) 외주면 일단에는 노즐(120)이 장착되어 제1부시(100)의 이동을 제어할 수 있게 한다.In addition, a nozzle 120 is mounted at one end of the outer surface of the first bushing 100 to control the movement of the first bushing 100.

이때, 제1부시(100)는 고무재질로 형성되도록 하는 것이 바람직하다.At this time, the first bush 100 is preferably formed of a rubber material.

제2브래킷(300)은 'ㄷ'자 로드 형상으로 이루어져 제1부시(100)의 파이프(110) 양단에 체결된다.The second bracket 300 has a "C" shape and is fastened to both ends of the pipe 110 of the first bush 100.

제2브래킷(300)의 타단은 원통 형상의 제2부시(310)가 구비되어 제1부시(100)를 통해 댐핑 시킨 NVH를 제2부시(310)에서 2차적으로 댐핑 시킬 수 있게 한다.
The other end of the second bracket 300 is provided with a cylindrical second bushing 310 to enable secondary damping of the NVH damped through the first bushing 100 by the second bushing 310.

이하, 본 발명의 작용 및 효과를 설명하면 다음과 같다.Hereinafter, functions and effects of the present invention will be described.

도 3에 도시된 바와 같이 에어 펌핑력과 내구력을 증대 할 수 있도록 파이프(110)의 중간부가 구 형상으로 이루어진다.As shown in FIG. 3, the middle portion of the pipe 110 has a spherical shape so as to increase air pumping force and durability.

그 결과, 종래에는 플런저를 이용하여 유체를 펌핑하지만 본 발명에서는 파이프(110)의 구 형상에 의하여 에어 펌핑력을 증대시키게 된다.As a result, conventionally, the fluid is pumped by using the plunger, but in the present invention, the air pumping force is increased by the spherical shape of the pipe 110.

또한, 도 4에 도시된 바와 같이 하중이 입력하중방향으로 적용 시 공기유동방향이 양쪽 에어챔버(101)에 의해 일단은 압축되고, 타단은 팽창되는 형상이 교대로 발생하며, 이로 인해 공기유동이 노즐(120)을 통과하면서 감쇠력을 발생시키게 된다.4, when the load is applied in the direction of the input load, the air flow direction is alternately compressed by the air chambers 101 and the other ends are alternately generated, So that a damping force is generated while passing through the nozzle 120.

이때, 고무재질의 제1부시(100)와 제1브래킷(200)이 억지 끼움방식으로 조립됨으로 인해 종래에 비압축성 유체의 누유를 방지하기 위해 파이프(110) 및 브래킷 등에 접착을 실시해야 하는 것에 비해 조립, 공정 단순화로 원가절감 달성이 가능하고 내구력 증대도 가능하다.Since the first bush 100 made of rubber and the first bracket 200 are assembled in an interference fit manner, it is necessary to adhere to the pipe 110 and the bracket in order to prevent leakage of the incompressible fluid Cost reduction can be achieved by assembly and process simplification, and durability can be increased.

또한, 제1브래킷(200)에 직경 및 길이가 작은 노즐(120)이 조립될 수 있게 하여 튜닝이 용이하게 한다.
Further, the nozzle 120 having a small diameter and a small length can be assembled to the first bracket 200, thereby facilitating tuning.

이상과 같이, 본 발명은 비록 한정된 실시예와 도면에 의해 설명되었으나, 본 발명은 이것에 의해 한정되지 않으며 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에 의해 본 발명의 기술사상과 아래에 기재될 특허청구범위 내에서 다양한 수정 및 변형이 가능함은 물론이다.
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It is to be understood that various changes and modifications may be made without departing from the scope of the appended claims.

100 : 제1부시 101 : 에어챔버
110 : 파이프 120 : 노즐
200 : 제1브래킷 300 : 제2브래킷
310 : 제2부시100: first bush 101: air chamber
110: pipe 120: nozzle
200: first bracket 300: second bracket
310: Second Bush

Claims (5)

중앙에 파이프가 관통 형성되는 원통 형상의 제1부시와;
상기 제1부시 외주면을 커버하는 제1브래킷과;
상기 제1부시의 파이프 양단에 체결되는 로드 형상의 제2브래킷과;
상기 제2브래킷으로부터 연장 형성되는 원통 형상의 제2부시;를 포함하는 것을 특징으로 하는 부시 구조.
A first bush having a cylindrical shape and a pipe formed at a center thereof;
A first bracket covering the outer surface of the first bush;
A rod-shaped second bracket fastened to both ends of the pipe of the first bush;
And a cylindrical second bushing extending from the second bracket.
청구항 1에 있어서,
상기 제1부시 외주면에는 절곡홈이 형성되어 상기 제1부시와 제1브래킷 사이에 에어챔버를 형성시키는 것을 특징으로 하는 부시 구조.
The method according to claim 1,
Wherein a bending groove is formed in the outer circumferential surface of the first bush to form an air chamber between the first bush and the first bracket.
청구항 1에 있어서,
상기 제1부시 외주면 일단에는 노즐이 장착되는 것을 특징으로 하는 부시 구조.
The method according to claim 1,
And a nozzle is mounted at one end of the outer surface of the first bush.
청구항 1에 있어서,
상기 파이프는 중간부가 구 형상으로 형성되는 것을 특징으로 하는 부시 구조.
The method according to claim 1,
Wherein the pipe has an intermediate portion formed in a spherical shape.
청구항 1에 있어서,
상기 제1부시는 고무재질로 형성되는 것을 특징으로 하는 부시 구조.The method according to claim 1,
Wherein the first bush is formed of a rubber material.
KR1020120128703A 2012-11-14 2012-11-14 Bush structure KR20140062628A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020120128703A KR20140062628A (en) 2012-11-14 2012-11-14 Bush structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020120128703A KR20140062628A (en) 2012-11-14 2012-11-14 Bush structure

Publications (1)

Publication Number Publication Date
KR20140062628A true KR20140062628A (en) 2014-05-26

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KR1020120128703A KR20140062628A (en) 2012-11-14 2012-11-14 Bush structure

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106704425A (en) * 2015-08-27 2017-05-24 上海汽车集团股份有限公司 Automobile, ECU, bush and control system used for controlling rigidity of bush
KR20190121075A (en) 2018-04-17 2019-10-25 현대자동차주식회사 Air damping bush with variable nozzel module

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106704425A (en) * 2015-08-27 2017-05-24 上海汽车集团股份有限公司 Automobile, ECU, bush and control system used for controlling rigidity of bush
CN106704425B (en) * 2015-08-27 2019-01-04 上海汽车集团股份有限公司 Automobile, ECU and the control system for controlling bushing rigidity
KR20190121075A (en) 2018-04-17 2019-10-25 현대자동차주식회사 Air damping bush with variable nozzel module

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