KR20040031942A - Mounting insulator - Google Patents

Mounting insulator Download PDF

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Publication number
KR20040031942A
KR20040031942A KR1020020061122A KR20020061122A KR20040031942A KR 20040031942 A KR20040031942 A KR 20040031942A KR 1020020061122 A KR1020020061122 A KR 1020020061122A KR 20020061122 A KR20020061122 A KR 20020061122A KR 20040031942 A KR20040031942 A KR 20040031942A
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KR
South Korea
Prior art keywords
vibration
rubber member
vehicle body
side rubber
mounting insulator
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KR1020020061122A
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Korean (ko)
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KR100472165B1 (en
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곽병철
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현대자동차주식회사
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Priority to KR10-2002-0061122A priority Critical patent/KR100472165B1/en
Publication of KR20040031942A publication Critical patent/KR20040031942A/en
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Publication of KR100472165B1 publication Critical patent/KR100472165B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K5/00—Arrangement or mounting of internal-combustion or jet-propulsion units
    • B60K5/12—Arrangement of engine supports
    • B60K5/1266—Supports comprising friction damping devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2306/00—Other features of vehicle sub-units
    • B60Y2306/09—Reducing noise

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Vibration Prevention Devices (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)

Abstract

PURPOSE: A mounting insulator for insulating vibration is provided to obtain very flexible structure in the vertical/horizontal and front and rear directions to reduce noise and vibration of the room of a vehicle by minimizing the vibration transmitted to a vehicle body from a source of vibration. CONSTITUTION: A mounting insulator for insulating vibration comprises a vehicle body side rubber member(31) forming a fitting groove(32), to be connected to a vehicle body side bracket(51), in the circumferential direction; a vibration excitation side rubber member(34) forming a fitting groove(35), to be connected to a vibration excitation side bracket(53), in the circumferential direction; an intermediate rubber member(38) disposed between the vehicle body side rubber member and the vibration excitation side rubber member, to reduce the vibration of all directions; a core member(42) supplementing the strength of the vibration excitation side rubber member; and a steel member(40) interposed to the joining surface to which the vehicle body side rubber member, the intermediate rubber member, and the vibration excitation side rubber member are connected. The core member passes through the middle of the vibration excitation side rubber member and one end of the core member is connected to one side of the intermediate rubber member.

Description

진동절연용 마운팅 인슐레이터{Mounting insulator}Mounting insulator for vibration insulation {Mounting insulator}

본 발명은 진동절연용 마운팅 인슐레이터의 구조에 관한 것으로, 차량의 진동발생원으로부터 차체로 전달되는 진동을 최소화하여 차실내 소음과 진동을 저감하기 위한 상하/좌우/전후 방향으로 매우 유연한 구조를 가진 진동절연용 마운팅인슐레이터에 관한 것이다.The present invention relates to a structure of a vibration insulator mounting insulator, which minimizes the vibration transmitted from the vibration source of the vehicle to the vehicle body to reduce vibration and noise inside the vehicle. The mounting insulator for the present invention.

일반적으로 엔진에는 피스톤과 커넥팅 로드의 상하이동에 의한 중심위치의 주기적 변화, 실린더 축방향으로 생기는 왕복운동 부분의 관성력, 커넥팅 로드가 크랭크 축에 가해지는 회전력의 주기적 변화 등에 의해서 상당한 진동이 발생된다. 엔진은 섀시 프레임 또는 바디에 지지되어 있으나, 엔진의 진동이 섀시 프레임이나 바디에 전해져 승차감이 나빠지지 않도록 엔진 장착부에는 반드시 탄성체에 의한 마운팅 인슐레이터가 장착되어 있다.In general, a significant vibration is generated in the engine due to a periodic change in the center position of the piston and the connecting rod due to the vertical movement of the piston, an inertial force in the reciprocating portion occurring in the axial direction of the cylinder, and a periodic change in the rotational force applied to the crank shaft by the connecting rod. The engine is supported by the chassis frame or body, but the mounting portion of the engine is necessarily equipped with an elastic insulator so that the vibration of the engine is transmitted to the chassis frame or the body so that the riding comfort is not deteriorated.

상기한 마운팅 인슐레이터는 도 2 내지 도 3에 도시되는 바와 같이, 차체측으로 진동가진측(엔진 또는 트랜스 밋션 측)의 진동이 그대로 전달되는 것이 방지되도록 고무부재를 핵심부속으로 하여 구성된다.As shown in FIGS. 2 to 3, the mounting insulator includes a rubber member as a core part to prevent vibration of the vibration vibration side (engine or transmission side) from being transmitted to the vehicle body as it is.

도 2는 칼라 부쉬 타입의 마운팅 인슐레이터(10)가 장착된 도면으로서, 고무부재(11)의 원주방향의 도중에는 진동 가진측 브라켓트(2)가 연결되기 위한 끼움홈(12)이 형성되고, 그 축방향의 중앙에는 상기 마운팅 인슐레이터(10)를 차체측 브라켓트(1)에 고정시키기 위한 볼트(13)가 삽입되는 칼라 부쉬(14)가 삽입된다.FIG. 2 is a view of mounting a collar bushing type mounting insulator 10. In the circumferential direction of the rubber member 11, a fitting groove 12 for connecting the vibration-exciting side bracket 2 is formed, and the shaft In the center of the direction is inserted a collar bush 14 into which a bolt 13 is inserted to fix the mounting insulator 10 to the vehicle body side bracket 1.

그리고 도 3은 샌드위치 부쉬 타입의 마운팅 인슐레이터(20)가 장착된 도면으로서, 진동을 완충하기 위한 주요소인 고무부재(21)의 양 끝단에는 금속부재(22)가 일체로 부착되고, 상기 금속부재(22)의 외측면 중앙부에는 차체측 브라켓트(1)와 진동가진측 브라켓트(2)에 체결되기 위한 볼트(23)가 돌출형성된다. 따라서 상기한 마운팅 인슐레이터(20)의 양끝단에 돌출형성된 볼트(23)는 차체측브라켓트(1)와 진동가진측 브라켓트(2)의 볼트공(1a,2a)에 끼워지고, 너트(24)로써 체결되어 이탈되지 않도록 구성된다.3 is a view illustrating a sandwich bushing type mounting insulator 20, in which both metal members 22 are integrally attached to both ends of a rubber member 21, which is a main element for cushioning vibration. A bolt 23 for fastening to the vehicle body side bracket 1 and the vibration side bracket 2 is protruded from the center portion of the outer side of the outer surface 22. Therefore, the bolts 23 protruding at both ends of the mounting insulator 20 are fitted into the bolt holes 1a and 2a of the vehicle body side bracket 1 and the vibration-vibrating side bracket 2, and as nuts 24. It is fastened and is configured not to be separated.

그런데 상기한 칼라 부쉬 타입의 마운팅 인슐레이터의 경우에는 단품 및 조립상의 오차가 발생되어 고무부재의 찌그러짐 및 유격부족이 발생되므로서 마운팅 인슐레이터의 제기능을 다하지 못하게 되고, 조립과정에서 토오크가 과다하게 가해지게 되어 고무부재가 찌그러지게 되는 문제점이 있었다.However, in the case of the above-described color bushing type mounting insulator, errors in the unit and assembly are generated, resulting in crushing and lack of play in the rubber member, thereby preventing the mounting insulator from functioning and excessive torque applied during the assembly process. There was a problem that the rubber member is crushed.

그리고 상기한 샌드위치 부쉬 타입의 마운팅 인슐레이터의 경우에는 상기 칼라 부쉬 타입의 마운팅 인슐레이터보다는 유연한 구조이나 작업공정수가 많으며 조립시 적정 토오크를 가하는데 제약이 있게 되는 문제점이 있었다.In the case of the sandwich bushing type of mounting insulator, the sandwich bushing type of mounting insulator has a problem in that a flexible structure or a number of working steps is more than that of the collar bushing type of mounting insulator, and there is a limitation in applying proper torque during assembly.

따라서 본 발명은 상기와 같은 문제점을 해결하기 위해서 안출된 것으로서, 차량의 진동발생원으로부터 차체로 전달되는 진동을 최소화하여 차실내 소음과 진동을 저감하기 위한 상하/좌우/전후 방향으로 매우 유연한 구조를 가진 진동절연용 마운팅 인슐레이터를 제공하는 데 목적이 있다.Therefore, the present invention has been made to solve the above problems, and has a very flexible structure in the vertical direction, left and right / front and rear direction to reduce the interior noise and vibration by minimizing the vibration transmitted to the vehicle body from the vibration source of the vehicle It is an object to provide a mounting insulator for vibration isolation.

본 발명은 상기와 같은 목적을 달성하기 위한 수단으로서,The present invention as a means for achieving the above object,

엔진 및 트랜스 밋션 등의 진동가진측에서 발생되는 진동이 차체에 전달되는 것을 완충하기 위한 마운팅 인슐레이터에 있어서,In the mounting insulator for buffering the vibration generated from the vibration vibration side such as the engine and the transmission to the vehicle body,

차체측 브라켓트에 연결되기 위한 끼움홈이 원주방향에 형성되는 차체측 고무부재와;A vehicle body side rubber member having a fitting groove for connecting to the vehicle body side bracket in a circumferential direction;

진동가진측 브라켓트에 연결되기 위한 끼움홈이 원주방향에 형성되는 진동가진측 고무부재와;A vibration vibration side rubber member having a fitting groove for connecting to the vibration vibration side bracket in a circumferential direction;

상기한 차체측 고무부재와 진동가진측 고무부재 사이에 위치되어 전방향의 진동이 감쇄되도록 하기 위한 중간 고무부재와;An intermediate rubber member positioned between the vehicle body side rubber member and the vibration vibration side rubber member to reduce vibration in all directions;

상기 진동가진측 고무부재의 중앙을 관통하여 그 일단이 상기 중간 고무부재의 일측면에 연결되어 진동가진측 고무부재의 강도를 보완하기 위한 심재와;A core member penetrating through the center of the vibration vibration-side rubber member and having one end connected to one side surface of the intermediate rubber member to compensate for the strength of the vibration vibration-side rubber member;

상기한 차체측 고무부재와, 중간 고무부재와 진동가진측 고무부재가 연결되는 접합면에 개재되는 스틸부재; 를 포함하여 구성되는 것을 특징으로 한다.A steel member interposed between the vehicle body side rubber member, the joint surface to which the intermediate rubber member and the vibration vibration side rubber member are connected; Characterized in that comprises a.

도 1은 본 발명에 의한 마운팅 인슐레이터의 구성도.1 is a block diagram of a mounting insulator according to the present invention.

도 2는 종래기술에 의한 칼라 부쉬 타입의 마운팅 인슐레이터의 구성도.2 is a block diagram of a color bushing type mounting insulator according to the prior art.

도 3은 종래기술에 의한 샌드위치 부쉬 타입의 마운팅 인슐레이터의 구성도.3 is a block diagram of a sandwich bush type mounting insulator according to the prior art.

※ 도면의 주요부분에 대한 부호의 설명※ Explanation of code for main part of drawing

30 : 마운팅 인슐레이터 31 : 차체측 고무부재30 mounting insulator 31 body part rubber member

32,35 : 끼움홈 33,36 : 챔퍼면32,35: fitting groove 33,36: chamfer face

34 : 진동가진측 고무부재 37 : 연질 고무부재34: vibration vibration side rubber member 37: soft rubber member

38 : 중앙 고무부재 40 : 스틸부재38: center rubber member 40: steel member

42 : 심재 51 : 차체측 브라켓트42: core 51: body bracket

52,54 : 장착공 53 : 진동가진측 브라켓트52,54: mounting hole 53: vibration side bracket

이하, 본 발명에 의한 마운팅 인슐레이터의 구성 및 작동에 따른 바람직한 실시예를 첨부한 도면과 함께 상세하게 설명하면 다음과 같다.Hereinafter, with reference to the accompanying drawings, preferred embodiments according to the configuration and operation of the mounting insulator according to the present invention will be described in detail.

도 1은 본 발명에 의한 마운팅 인슐레이터의 구성도로서, 도면 중에 표시되는 도면부호 30은 본 발명에 의해 형성되는 마운팅 인슐레이터를 지시하는 것이다.1 is a configuration diagram of a mounting insulator according to the present invention, wherein reference numeral 30 indicated in the drawing indicates a mounting insulator formed by the present invention.

상기한 마운팅 인슐레이터(30)는 차체측과 진동가진측에 연결되기 위한 각각의 고무부재(31,34)가 상하측에 위치되고, 상기 두개의 고무부재(31,34) 사이에는 중간 고무부재(38)가 위치된다.The mounting insulator 30 has respective rubber members 31 and 34 positioned at upper and lower sides for connection to the vehicle body side and the vibration vibration side, and between the two rubber members 31 and 34 is an intermediate rubber member ( 38) is located.

즉, 차체측에 연결되기 위한 차체측 고무부재(31)의 원주방향에는 차체측 브라켓트(51)의 도중이 끼워지기 위한 끼움홈(32,34)이 형성되고, 진동가진측(엔진 및 트랜스 밋션 측)에 연결되기 위한 진동가진측 고무부재(34)의 원주방향에는 진동가진측 브라켓트(53)의 도중이 끼워지기 위한 끼움홈(35)이 형성되는 것이다. 그리고 상기한 차체측 고무부재(31)와 진동가진측 고무부재(34) 사이에 중간 고무부재(38)가 개재되는데, 각각의 고무부재(31,33,38)의 접합면 사이에는 형상유지를 위한 스틸부재(40)가 개재된다.That is, fitting grooves 32 and 34 are formed in the circumferential direction of the vehicle body side rubber member 31 to be connected to the vehicle body side to fit the middle of the vehicle body bracket 51, and the vibration vibration side (engine and transmission). In the circumferential direction of the vibration vibration-side rubber member 34 to be connected to the side), the fitting groove 35 for fitting the middle of the vibration vibration-side bracket 53 is formed. An intermediate rubber member 38 is interposed between the vehicle body side rubber member 31 and the vibration side rubber member 34, and maintains the shape between the joint surfaces of the respective rubber members 31, 33, 38. There is a steel member 40 for intervening.

한편, 상기한 진동가진측 고무부재(34)의 축방향 중앙을 관통하여 심재(42)가 심어지는데, 상기 심재(42)의 하부 일측 끝단은 상기 중간 고무부재(38)의 상부면에 연결된다. 상기 심재(42)는 진동가진측 고무부재(34)의 강도를 보완하기 위한 것이다.On the other hand, the core 42 is planted through the axial center of the vibration-side rubber member 34, one end of the lower portion of the core 42 is connected to the upper surface of the intermediate rubber member 38. . The core 42 is to supplement the strength of the vibration-side rubber member 34.

그리고 진동가진측 고무부재(34)의 하부 외주연은 스틸부재(42)로 밴딩되고, 진동가진측 고무부재(34)의 하측단에는 상하방향의 진동 감쇄가 효과적으로 이루어지도록 하기 위해 재질이 다른 연질 고무부재(37)가 추가되는 것이 바람직하다.And the lower outer periphery of the vibration vibration-side rubber member 34 is bent to the steel member 42, the lower end of the vibration vibration-side rubber member 34, the soft material of different materials in order to effectively reduce the vibration in the vertical direction It is preferable that the rubber member 37 is added.

특히, 상기한 차체측 고무부재(31)와 진동가진측 고무부재(34)의 양측 끝단에는 챔퍼면(33,36)이 가공되어, 차체측 브라켓트(51) 및 진동가진측 브라켓트(53)에 형성된 장착공(53,54)에 삽입이 수월하도록 하는 것이 바람직하다.In particular, the chamfer surfaces 33 and 36 are processed at both ends of the vehicle body side rubber member 31 and the vibration vibration side rubber member 34, so that the vehicle body side bracket 51 and the vibration vibration side bracket 53 are disposed. It is preferable to facilitate insertion into the formed mounting holes 53 and 54.

이상과 같이 구성된 진동절연용 마운팅 인슐레이터의 작용을 설명하면 다음과 같다.Referring to the operation of the mounting vibration insulator for vibration insulation as described above is as follows.

엔진이 시동되고 차량이 운행되면 진동가진측인 엔진과 트랜스 밋션 측에 발생되는 진동은 차체측으로 전달된다.When the engine is started and the vehicle is running, the vibration generated on the vibration vibration side and the transmission side is transmitted to the vehicle body side.

이 과정에서 진동가진측 브라켓트(53)와 차체측 브라켓트(51)를 연결하고 있는 마운팅 인슐레이터(30)의 차체측 고무부재(31), 진동가진측 고무부재(34), 중간 고무부재(38) 및 연질 고무부재(37) 등이 진동을 흡수하게 된다. 따라서 상기한 마운팅 인슐레이터(30)에 의해서 진동가진측에서 차체측으로 전달되는 상하방향, 좌우방향, 전후방향의 진동이 감쇄되어진다.In this process, the vehicle body side rubber member 31, the vibration vibration side rubber member 34, and the intermediate rubber member 38 of the mounting insulator 30 connecting the vibration vibration side bracket 53 and the vehicle body side bracket 51. And the soft rubber member 37 to absorb vibrations. Therefore, the vibration of the up, down, left, and right directions transmitted from the vibration vibration side to the vehicle body side by the mounting insulator 30 is attenuated.

이와 같은 마운팅 인슐레이터(30)는 종래의 마운팅 인슐레이터에 비해서 충분히 유연한 구조로 적용되므로서 차체측으로 전달되는 진동 및 소음을 저감시킬 수 있어 차량의 상품성 향상에 기여하게 된다.Since the mounting insulator 30 is applied in a sufficiently flexible structure as compared with the conventional mounting insulator, the mounting insulator 30 can reduce vibration and noise transmitted to the vehicle body side, thereby contributing to the improvement of the vehicle's marketability.

또한, 차체측 브라켓트(51) 및 진동가진측 브라켓트(53)에 조립하는 과정에서도, 장착공(52,54)에 차체측 고무부재(31)와 진동가진측 고무부재(34)의 챔퍼면(33,36)을 삽입하는 방법으로 조립이 이루어지므로서, 볼트 조립등에 의한 조립공정이 간소화될 뿐만 아니라 볼트조립 등에 의한 조립공차가 예방된다.Further, in the process of assembling to the vehicle body side bracket 51 and the vibration vibration side bracket 53, the chamfer surfaces of the vehicle body side rubber member 31 and the vibration vibration side rubber member 34 are provided in the mounting holes 52 and 54, respectively. As the assembly is performed by inserting 33 and 36, not only the assembly process by bolt assembly and the like is simplified but also the assembly tolerance by bolt assembly and the like is prevented.

이상과 같이 구성되는 마운팅 인슐레이터는 종래의 마운팅 인슐레이터에 비해서 충분히 유연한 구조로 적용되므로서 차체측으로 전달되는 진동 및 소음을 저감시킬 수 있어 차량의 상품성 향상에 기여할 뿐만 아니라, 차체측 브라켓트 및 진동가진측 브라켓트에 조립하는 과정에서도, 장착공에 차체측 고무부재와 진동가진측 고무부재의 챔퍼면을 삽입하는 방법으로 조립이 이루어지므로서, 볼트 조립등에 의한 조립공정이 간소화되는 커다란 장점이 있는 것이다.The mounting insulator constructed as described above has a structure that is sufficiently flexible compared to the conventional mounting insulator, which can reduce vibration and noise transmitted to the vehicle body side, thereby contributing to the improvement of the merchandise of the vehicle, as well as the vehicle side bracket and vibration vibration side bracket. In the process of assembling in, the assembly is made by inserting the chamfer surface of the vehicle body side rubber member and the vibration vibration side rubber member into the mounting hole, there is a great advantage that the assembly process by bolt assembly or the like is simplified.

Claims (2)

엔진 및 트랜스 밋션 등의 진동가진측에서 발생되는 진동이 차체에 전달되는 것을 완충하기 위한 마운팅 인슐레이터에 있어서,In the mounting insulator for buffering the vibration generated from the vibration vibration side such as the engine and the transmission to the vehicle body, 차체측 브라켓트(51)에 연결되기 위한 끼움홈(32)이 원주방향에 형성되는 차체측 고무부재(31)와;A vehicle body side rubber member 31 having a fitting groove 32 for connecting to the vehicle body side bracket 51 in a circumferential direction; 진동가진측 브라켓트(53)에 연결되기 위한 끼움홈(35)이 원주방향에 형성되는 진동가진측 고무부재(34)와;A vibration vibration side rubber member 34 having a fitting groove 35 for connecting to the vibration vibration side bracket 53 formed in the circumferential direction; 상기한 차체측 고무부재(31)와 진동가진측 고무부재(34) 사이에 위치되어 전방향의 진동이 감쇄되도록 하기 위한 중간 고무부재(38)와;An intermediate rubber member (38) positioned between the vehicle body side rubber member (31) and the vibration vibration side rubber member (34) to attenuate vibrations in all directions; 상기 진동가진측 고무부재(34)의 중앙을 관통하여 그 일단이 상기 중간 고무부재(38)의 일측면에 연결되어, 진동가진측 고무부재(34)의 강도를 보완하기 위한 심재(42)와;The core 42 penetrates through the center of the vibration side rubber member 34 and one end thereof is connected to one side of the intermediate rubber member 38 to compensate for the strength of the vibration side rubber member 34. ; 상기한 차체측 고무부재(31)와, 중간 고무부재(38)와 진동가진측 고무부재(34)가 연결되는 접합면에 개재되는 스틸부재(40); 를 포함하여 구성되는 것을 특징으로 하는 진동절연용 마운팅 인슐레이터.A steel member 40 interposed between the vehicle body side rubber member 31, the intermediate rubber member 38, and the vibration side rubber member 34 connected to each other; Mounting insulator for vibration isolation, characterized in that comprising a. 제 1 항에 있어서,The method of claim 1, 상기한 중간 고무부재(38) 측에 연결되는 진동가진측 고무부재(34)의 외주연은 스틸부재(42)로 밴딩되는 것을 특징으로 하는 진동절연용 마운팅 인슐레이터.Vibration insulation mounting insulator, characterized in that the outer periphery of the vibration vibration-side rubber member (34) connected to the intermediate rubber member (38) side is banded to the steel member (42).
KR10-2002-0061122A 2002-10-08 2002-10-08 Mounting insulator KR100472165B1 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100937975B1 (en) * 2009-05-26 2010-01-21 김종순 Four wheel drive multipurpose road management working vehicle having dynamic damper
US8021738B2 (en) 2005-12-02 2011-09-20 Tega Industries Limited Liner component for use in mining and quarrying industries
KR101469424B1 (en) * 2014-09-25 2014-12-04 주식회사 성림티앤티 Truck Air Duct cushion and its manufacturing method

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19980053862U (en) * 1996-12-31 1998-10-07 추호석 Anti-vibration rubber for engine mounting
JPH11344070A (en) * 1998-06-01 1999-12-14 Unipres Corp Liquid-filled type vibration control device
JP2000193003A (en) * 1998-11-10 2000-07-14 Tokai Rubber Ind Ltd Engine roll mount for automobile
KR100428005B1 (en) * 2001-06-19 2004-04-28 현대자동차주식회사 Power-train mounting structure of vehicle
KR100461449B1 (en) * 2001-10-16 2004-12-14 현대자동차주식회사 Engine mounting apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8021738B2 (en) 2005-12-02 2011-09-20 Tega Industries Limited Liner component for use in mining and quarrying industries
KR100937975B1 (en) * 2009-05-26 2010-01-21 김종순 Four wheel drive multipurpose road management working vehicle having dynamic damper
KR101469424B1 (en) * 2014-09-25 2014-12-04 주식회사 성림티앤티 Truck Air Duct cushion and its manufacturing method

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