KR100412870B1 - geometry bush of lower arm for vehicle - Google Patents

geometry bush of lower arm for vehicle Download PDF

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Publication number
KR100412870B1
KR100412870B1 KR10-2001-0054026A KR20010054026A KR100412870B1 KR 100412870 B1 KR100412870 B1 KR 100412870B1 KR 20010054026 A KR20010054026 A KR 20010054026A KR 100412870 B1 KR100412870 B1 KR 100412870B1
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KR
South Korea
Prior art keywords
buffer member
mounting bolt
circumferential surface
frame mounting
vehicle
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Application number
KR10-2001-0054026A
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Korean (ko)
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KR20030020620A (en
Inventor
최태수
Original Assignee
현대자동차주식회사
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Priority to KR10-2001-0054026A priority Critical patent/KR100412870B1/en
Publication of KR20030020620A publication Critical patent/KR20030020620A/en
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Publication of KR100412870B1 publication Critical patent/KR100412870B1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G7/00—Pivoted suspension arms; Accessories thereof
    • B60G7/04—Buffer means for limiting movement of arms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
    • B60G2204/41—Elastic mounts, e.g. bushings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
    • B60G2204/418—Bearings, e.g. ball or roller bearings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
    • B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
    • B60G2206/012—Hollow or tubular elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
    • B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
    • B60G2206/70—Materials used in suspensions
    • B60G2206/73—Rubber; Elastomers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
    • B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
    • B60G2206/80—Manufacturing procedures
    • B60G2206/82—Joining
    • B60G2206/8207—Joining by screwing
    • 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
    • F16F1/00—Springs
    • F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
    • F16F1/38—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers with a sleeve of elastic material between a rigid outer sleeve and a rigid inner sleeve or pin, i.e. bushing-type
    • F16F1/3835—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers with a sleeve of elastic material between a rigid outer sleeve and a rigid inner sleeve or pin, i.e. bushing-type characterised by the sleeve of elastic material, e.g. having indentations or made of materials of different hardness

Abstract

본 발명은 자동차용 로어암의 지오메트리 부시에 관한 것으로, 차체프레임(2)에 나사결합되는 프레임마운팅볼트(51)와, 이 프레임마운팅볼트(51)에 의해 상하면 중앙부위가 관통되면서 상기 프레임마운팅볼트(51)의 외주면에 일체로 결합되는 인너완충부재(52)와, 이 인너완충부재(52)에 의해 상하면 중앙부위가 관통되면서 상기 인너완충부재(52)의 외주면과 경계면(L)을 갖추도록 결합되는 아웃터완충부재(53)와, 이 아웃터완충부재(53)의 외주면에 감싸여져 결합되는 외부파이프부재(54)와, 상기 인너완충부재(52) 및 아웃터완충부재(53)의 내부에서 경계면(L)을 가로지르도록 설치되면서 차체의 전후방향 진동과 비틀림력에 의한 진동을 흡수 또는 감쇠시키도록 하는 다수개의 진동흡수수단(55)을 포함하도록 구성되어져, 상기 프레임마운팅볼트(551)와 인너완충부재(52)가 일체화로 구성되어 전체적인 지오메트리 부시(50)의 내구력이 향상되면서 상기 로어암(1)으로 전달되는 차량의 모든 하중을 효과적으로 지탱할 수 있게 됨은 물론, 차체의 전후방향에 대한 진동과 차체의 비틀림 방향에 대한 진동도 모두 효과적으로 흡수 또는 감쇠시킬 수 있게 되어, 차량의 현가기능이 향상되고 이로 인해 승차감이 향상되면서 차량의 주행안정성도 향상되도록 된 것이다.The present invention relates to a geometry bushing of a lower arm for an automobile, and includes a frame mounting bolt 51 screwed to a vehicle body frame 2 and a top and bottom center portion of the frame mounting bolt 51 through the frame mounting bolt 51. Inner buffer member 52 integrally coupled to the outer circumferential surface of 51 and the upper and lower center portions of the inner buffer member 52 penetrate through the inner buffer member 52 to provide an outer circumferential surface and an interface L of the inner buffer member 52. The outer buffer member (53) to be coupled, the outer pipe member (54) wrapped and coupled to the outer circumferential surface of the outer buffer member (53), and the boundary surface inside the inner buffer member (52) and the outer buffer member (53). Is installed to cross the (L) is configured to include a plurality of vibration absorbing means 55 to absorb or attenuate the vibration caused by the front and rear vibration and torsional force of the vehicle body, the frame mounting bolt 551 and the inner Wan As the member 52 is integrally formed, the durability of the overall geometry bush 50 is improved, and thus, it is possible to effectively support all the loads of the vehicle transmitted to the lower arm 1, as well as vibrations in the front and rear directions of the vehicle body. All vibrations in the torsional direction can be effectively absorbed or attenuated, thereby improving the suspension function of the vehicle and thereby improving the riding stability of the vehicle.

Description

자동차용 로어암의 지오메트리 부시{geometry bush of lower arm for vehicle}Geometry bush of lower arm for vehicle

본 발명은 자동차용 로어암의 지오메트리 부시에 관한 것으로, 특히 내구력을 향상시키면서 차체의 전후방향 진동 및 비틀림력에 의한 진동 흡수성능을 향상시킬 수 있도록 된 자동차용 로어암의 지오메트리 부시에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a geometry bush of a lower arm for automobiles, and more particularly to a geometry bush of a lower arm for automobiles, which is capable of improving vibration absorbing performance due to forward and backward vibrations and torsional forces of a vehicle body.

일반적으로, 차량의 현가장치는 승차감 및 주행안정성을 도모하기 위한 중요한 장치로써, 주로 차체를 차륜으로부터 안정적으로 지지하면서 차륜으로부터 제공되는 진동을 억제하거나 또는 신속하게 감소시키는 기능을 수행하게 된다.In general, the suspension of the vehicle is an important device for achieving ride comfort and running stability, and mainly serves to stably support the vehicle body from the wheel while suppressing or rapidly reducing the vibration provided from the wheel.

이와 같은 현가장치에는 차륜을 차체에 연결하고 아울러 지지하는 기능을 수행하는 로어암(1)이 사용되는데, 이 로어암(1)은 도 1에 도시된 바와 같이 형성되면서 각각의 단부에 차체마운팅부시(10;일명 A부쉬라 함)와 지오메트리 부시(20; 일명 G부쉬라 함) 및 볼조인트(20)가 일체로 결합되는 구조로 되어 있다.In such a suspension device, a lower arm 1 is used to connect and support the wheel to the vehicle body, and the lower arm 1 is formed as shown in FIG. (10; so-called A bush) and the geometry bush (20 (aka G bush)) and the ball joint 20 is integrally coupled.

여기서, 상기 차체마운팅부시(10) 및 지오메트리 부시(20)는 각각의 조립볼트(41,42)에 의해 차체프레임(2)에 연결되어 결합되고, 상기 볼조인트(30)는 차륜의 너클과 결합되어 어퍼암과 함께 차륜을 지지하게 된다.Here, the body mounting bush 10 and the geometry bush 20 is connected to the body frame 2 by coupling bolts 41 and 42, respectively, and the ball joint 30 is coupled to the knuckle of the wheel. To support the wheel with the upper arm.

한편, 상기 지오메트리 부시(20)는 도 2에 도시된 바와 같이, 소정의 직경을 갖춘 내부파이프부재(21)와, 이 내부파이프부재(21)에 의해 양측면 중앙부위가 관통되어 상기 내부파이프부재(21)의 외주면을 감싸도록 설치되는 고무재질의 완충부재(22)와, 이 완충부재(22)의 외주면에 감싸여져 결합되는 외부파이프부재(23)로 구성되게 된다.Meanwhile, as shown in FIG. 2, the geometry bush 20 has an inner pipe member 21 having a predetermined diameter, and both center portions of the inner side of the inner pipe member 21 are penetrated by the inner pipe member 21. The rubber member buffer member 22 is installed to surround the outer circumferential surface of 21, and the outer pipe member 23 is wrapped and coupled to the outer circumferential surface of the buffer member 22.

이와 같이 구성된 상기 지오메트리 부시(20)는 차량의 외부에서 전달되는 임의가진(random excitation)중, 주행중인 차량의 타이어가 노면의 돌출물을 통과할때 충격음에 뒤이어 발생되는 단발적인 진동인 임팩트하시니스(impact harshness)현상과, 선회중인 차량의 조향핸들이 회전되는 방향의 좌우측으로 흔들리는 시미(shimmy)현상과, 고속주행시 제동력이 발생될 때 조향핸들이나 대시패널에서 소음 또는 진동이 발생되는 저더(juder)현상을 동시에 예방하게 된다.The geometry bush 20 configured as described above is an impact sunshine that is a one-time vibration generated after the impact sound when the tire of the vehicle is passing through the protrusion of the road surface during random excitation transmitted from the outside of the vehicle. impact harshness, shimmy phenomena swinging to the left and right in the direction in which the steering wheel of a turning vehicle rotates, and judder that generates noise or vibration in the steering wheel or dash panel when braking force is generated during high-speed driving The phenomenon is prevented at the same time.

또한, 지오메트리 부시(20)는 로어암(1)으로 전달되는 모든 하중을 지탱하게 되는데, 이와 같이 차량의 하중을 효과적으로 지탱하기 위해서는 지오메트리 부시(20)를 구성하는 완충부재(22)에 하중방향에 따른 홀을 다수개 형성시키거나 또는 상기 완충부재(22)내에 별도의 보강재[스틸(steel)이나 플라스틱(plastic) 또는 우레탄등으로 만들어진 보강재]를 일체로 삽입시켜 차량의 하중을 지탱하게 된다.In addition, the geometry bush 20 supports all the loads transmitted to the lower arm 1, and thus, in order to effectively support the load of the vehicle, the geometry bush 20 is applied to the buffer member 22 constituting the geometry bush 20 in the load direction. A plurality of holes are formed or a separate reinforcement (reinforcement made of steel, plastic, urethane, etc.) is integrally inserted into the buffer member 22 to support the load of the vehicle.

그러나, 상기와 같이 차량의 하중을 지탱하기 위해 완충부재(22)에 다수개의홀을 형성시키게 되면 전체적인 지오메트리 부시(20)의 내구력이 감소되면서 쉽게 파손되는 문제점이 있었다.However, when a plurality of holes are formed in the shock absorbing member 22 to support the load of the vehicle as described above, there is a problem that the durability of the overall geometry bush 20 is reduced while being easily broken.

또한, 상기와 같이 차량의 하중을 지탱하기 위해 완충부재(22)내에 별도의 보강재를 삽입시키고자 할 경우에는 상기 완충부재(22)를 가류시켜 보강재와 일체로 접합시키는 작업을 수행해야 함으로써, 작업공수가 증가되게 되고 이로 인해 작업의 편의성이 감소되면서 생산성도 그만큼 감소된다는 문제점도 있었다.In addition, in order to insert a separate reinforcement into the shock absorbing member 22 in order to support the load of the vehicle as described above, the work must be performed by vulcanizing the shock absorbing member 22 and integrally joining the reinforcement. There is also a problem in that the maneuver is increased and this reduces the productivity of work as well as the ease of operation.

이에 본 발명은 상기와 같은 모든 문제점들을 해소하기 위해 안출된 것으로, 지오메트리 부시를 구성하는 완충부재를 인너완충부재 및 아웃터완충부재로 분리하여 결합시키면서 상기 인너완충부재 및 아웃터완충부재의 경계면사이에 진동흡수수단을 설치하여, 전체적인 내구력을 향상시키면서 차체의 전후방향 진동 및 비틀림력에 의한 진동 흡수성능도 향상시킬 수 있도록 된 자동차용 로어암의 지오메트리 부시를 제공함에 그 목적이 있다.Accordingly, the present invention has been made to solve all the problems described above, and the vibration member between the inner buffer member and the outer buffer member while separating and combining the buffer member constituting the geometry bush into the inner buffer member and the outer buffer member; It is an object of the present invention to provide a geometry bushing of a lower arm for automobiles by providing absorbing means and improving the overall endurance while also improving vibration absorbing performance due to front and rear vibration and torsional force of the vehicle body.

상기와 같은 목적을 달성하기 위한 본 발명의 지오메트리 부시는, 차체프레임에 나사결합되는 프레임마운팅볼트와, 이 프레임마운팅볼트에 의해 상하면 중앙부위가 관통되면서 상기 프레임마운팅볼트의 외주면에 일체로 결합되는 인너완충부재와, 이 인너완충부재에 의해 상하면 중앙부위가 관통되면서 상기 인너완충부재의 외주면과 경계면을 갖추도록 결합되는 아웃터완충부재와, 이 아웃터완충부재의 외주면에 감싸여져 결합되는 외부파이프부재와, 상기 인너완충부재 및 아웃터완충부재의 내부에서 경계면을 가로지르도록 설치되면서 차체의 전후방향 진동과 비틀림력에 의한 진동을 흡수 또는 감쇠시키도록 하는 다수개의 진동흡수수단을 포함하여 구성되는 것을 특징으로 한다.Geometry bush of the present invention for achieving the above object, the frame mounting bolt screwed to the body frame, and the inner frame is integrally coupled to the outer peripheral surface of the frame mounting bolt while the upper and lower center portion is penetrated by the frame mounting bolt A buffer member, an outer buffer member coupled to the upper and lower center portions by the inner buffer member to have a boundary surface with an outer circumferential surface of the inner buffer member, and an outer pipe member wrapped and coupled to the outer circumferential surface of the outer buffer member; And a plurality of vibration absorbing means for absorbing or attenuating the vibration caused by the front and rear vibration and the torsional force of the vehicle body while being installed to cross the boundary inside the inner buffer member and the outer buffer member. .

도 1은 일반적인 로워암의 설치구조를 도시한 분해 사시도,1 is an exploded perspective view showing the installation structure of a general lower arm,

도 2는 종래의 지오메트리 부시를 설명하기 위한 사시도,2 is a perspective view for explaining a conventional geometry bush,

도 3은 본 발명에 따른 지오메트리 부시를 설명하기 위한 사시도,3 is a perspective view illustrating a geometry bush according to the present invention;

도 4는 도 3의 Ⅰ-Ⅰ선 부분단면도이다.4 is a partial cross-sectional view taken along line II of FIG. 3.

< 도면의 주요 부분에 대한 부호의 설명 ><Description of Symbols for Main Parts of Drawings>

1 - 로어암 2 - 차체프레임1-Lower Arm 2-Body Frame

50 - 지오메트리 부시 51 - 프레임마운팅볼트50-Geometry Bush 51-Frame Mounting Bolts

52 - 인너완충부재 52a - 인너관통구멍52-Inner buffer member 52a-Inner through hole

53 - 아웃터완충부재 53a - 아웃터관통구멍53-outer buffer member 53a-outer through hole

54 - 외부파이프부재 55 - 진동흡수수단54-outer pipe member 55-vibration absorbing means

551 - 볼베어링부재 552 - 인너케이스부재551-Ball Bearing Member 552-Inner Case Member

553 - 인너탄성부재 554 - 아웃터케이스부재553-Inner Elastic Member 554-Outer Case Member

555 - 아웃터탄성부재 L - 인너완충부재와 아웃터완충부재의 경계면555-Outer elastic member L-Interface between inner buffer member and outer buffer member

이하 본 발명의 실시예를 첨부된 예시도면을 참조로 상세히 설명한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 3은 본 발명에 따른 지오메트리 부시를 설명하기 위한 사시도로서, 종래구조와 동일한 부위에는 동일한 참조부호를 붙이면서설명하기로 한다.Figure 3 is a perspective view for explaining the geometry bush according to the present invention, will be described with the same reference numerals to the same parts as the conventional structure.

본 발명에 따른 지오메트리 부시(50)는 일명 G부쉬라고도 하며, 현가장치를 구성하는 로어암(1)의 일단에 압입되어 설치되는 구조로 되어 있다.The geometry bush 50 according to the present invention is also called a G bush, and has a structure that is pressed into one end of the lower arm 1 constituting the suspension device.

즉, 상기 로어암(1)에는 도 1을 참조로 전술한 바와 같이 각각의 단부에 차체마운팅부시(10;일명 A부쉬라 함)와 본 발명에 따른 지오메트리 부시(50; 도 3과 도 4에 도시됨) 및 볼조인트(20)가 일체로 결합되는 구조로 되어 있다.That is, the lower arm 1 has a body mounting bush (10; aka A bush) at each end as described above with reference to Fig. 1 and a geometry bush 50 according to the present invention (Figs. 3 and 4). Shown) and the ball joint 20 is integrally coupled.

여기서, 상기 차체마운팅부시(10) 및 지오메트리 부시(50)는 각각의 조립볼트(41,42)에 의해 차체프레임(2)에 연결되어 결합되고, 상기 볼조인트(30)는 차륜의 너클과 결합되어 어퍼암과 함께 차륜을 지지하게 된다.Here, the body mounting bush 10 and the geometry bush 50 is connected to the body frame 2 by the coupling bolts 41 and 42, respectively, and the ball joint 30 is coupled to the knuckle of the wheel. To support the wheel with the upper arm.

한편, 본 발명에 따른 상기 지오메트리 부시(50)는 도 3과 도 4에 도시된 바와 같이, 차체프레임(2)에 나사결합되는 프레임마운팅볼트(51)와, 이 프레임마운팅볼트(51)에 의해 상하면 중앙부위가 관통되면서 상기 프레임마운팅볼트(51)의 외주면에 일체로 결합되는 인너완충부재(52)와, 이 인너완충부재(52)에 의해 상하면 중앙부위가 관통되면서 상기 인너완충부재(52)의 외주면과 경계면(L)을 갖추도록 결합되는 아웃터완충부재(53)와, 이 아웃터완충부재(53)의 외주면에 감싸여져 결합되는 외부파이프부재(54)와, 상기 인너완충부재(52) 및 아웃터완충부재(53)의 내부에서 경계면(L)을 가로지르도록 설치되면서 차체의 전후방향 진동과 비틀림력에 의한 진동을 흡수 또는 감쇠시키도록 하는 다수개의 진동흡수수단(55)을 포함하여 구성되는 구조로 되어 있다.On the other hand, the geometry bush 50 according to the present invention, as shown in Figures 3 and 4, the frame mounting bolt 51 is screwed to the body frame 2 and by the frame mounting bolt 51 Inner buffer member 52 which is integrally coupled to the outer circumferential surface of the frame mounting bolt 51 while the upper and lower center portions penetrate, and the upper and lower center portions penetrate through the inner buffer member 52 by the inner buffer member 52. An outer buffer member 53 coupled to have an outer circumferential surface and an interface L thereof, an outer pipe member 54 wrapped and coupled to an outer circumferential surface of the outer buffer member 53, and the inner buffer member 52 and It is installed to cross the boundary (L) in the outer buffer member 53, and comprises a plurality of vibration absorbing means 55 for absorbing or attenuating the vibration caused by the front and rear vibration and torsional force of the vehicle body It is structured.

여기서, 상기 진동흡수수단(55)은 보통 네 개로 구성되며 상기 진동흡수수단(55)은 각각 프레임마운팅볼트(51)를 중심으로 서로의 간격이 90°의 사이간격을 가지도록 설치되는 되게 된다.Here, the vibration absorbing means 55 is usually composed of four and the vibration absorbing means 55 are installed so as to have an interval of 90 ° to each other with respect to the frame mounting bolt 51, respectively.

한편, 상기 진동흡수수단(55)은, 상기 인너완충부재(52) 및 아웃터완충부재(53)의 경계면(L)사이에서 상기 인너완충부재(52)와아웃터완충부재(53)에 각각 중첩을 이루도록 설치되는 볼베어링부재(551)과, 상기 경계면(L)을 중심으로 인너완충부재(52)내에 설치되고 인너완충부재(52)쪽으로 중첩되는 볼베어링부재(551)의 일측 외주면을 감싸면서 보호하는 인너케이스부재(552)와, 이 인너케이스부재(552)에 일단이 지지되고 상기 프레임마운팅볼트(51)의 외주면에 타단이 지지되도록 상기 인너완충부재(52)내에 형성된 인너관통구멍(52a)으로 설치되는 인너탄성부재(553)와, 상기 경계면(L)을 중심으로 아웃터완충부재(53)내에 설치되고 아웃터완충부재(53)쪽으로 중첩되는 볼베어링부재(551)의 타측 외주면을 감싸면서 보호하는 아웃터케이스부재(554)와, 이 아웃터케이스부재(554)에 일단이 지지되고 상기 외부파이프부재(54)의 외주면에 타단이 지지되도록 상기 아웃터완충부재(53)내에 형성된 아웃터관통구멍(53a)으로 설치되는 아웃터탄성부재(555)로 구성되게 된다.On the other hand, the vibration absorbing means 55, respectively overlaps the inner buffer member 52 and the outer buffer member 53 between the boundary surface (L) of the inner buffer member 52 and the outer buffer member 53. Inner protecting the ball bearing member 551 which is installed to be formed and the outer circumferential surface of one side of the ball bearing member 551 which is installed in the inner buffer member 52 about the boundary surface L and overlaps the inner buffer member 52. And an inner through hole 52a formed in the inner buffer member 52 so that one end is supported by the case member 552 and the other end is supported by the inner circumferential surface of the frame mounting bolt 51. An outer case for protecting the inner elastic member 553 and the outer circumferential surface of the ball bearing member 551 which is installed in the outer buffer member 53 about the boundary surface L and overlaps the outer buffer member 53. Member 554 and this outer case One end is supported by the ash 554 and the other end is supported on the outer circumferential surface of the outer pipe member 54 to be composed of the outer elastic member 555 installed by the outer through hole (53a) formed in the outer buffer member 53 do.

여기서, 상기 인너완충부재(52) 및 아웃터완충부재(53)는 전체적인 지오메트리 부시(50)의 내구력을 향상시키기 위해 플라스틱이나 또는 우레탄으로 형성되게 된다.Here, the inner buffer member 52 and the outer buffer member 53 are formed of plastic or urethane to improve the durability of the overall geometry bush 50.

이와 같이 구성된 본 발명에 따른 지오메트리 부시(50)는 차량의 외부에서 전달되는 임의가진(random excitation)중, 주행중인 차량의 타이어가 노면의 돌출물을 통과할 때 충격음에 뒤이어 발생되는 단발적인 진동인 임팩트하시니스(impact harshness)현상과, 선회중인 차량의 조향핸들이 회전되는 방향의 좌우측으로 흔들리는 시미(shimmy)현상과, 고속주행시 제동력이 발생될 때 조향핸들이나 대시패널에서 소음 또는 진동이 발생되는 저더(juder)현상을 동시에 예방하게 된다.The geometry bush 50 according to the present invention configured as described above is an impact which is a one-time vibration generated after the impact sound when the tire of the vehicle is passing through the protrusion of the road during random excitation transmitted from the outside of the vehicle. Impact harshness, shimmy phenomena swinging to the left and right in the direction in which the steering wheel is turning, and judging that noise or vibration is generated from the steering wheel or dash panel when braking force is generated during high-speed driving (juder) Prevent the phenomenon at the same time.

또한, 본 발명에 따른 지오메트리 부시(50)는 상기 프레임마운팅볼트(51)와 인너완충부재(52)가 일체화되어 구성되도록 되어 있어, 하중방향에 따른 다수개의 홀이 형성된 종래의 지오메트리 부시보다, 전체적인 지오메트리 부시(50)의 내구력이 그만큼 향상되게 되고, 이로 인해 상기 로어암(1)으로 전달되는 차량의 모든 하중도 효과적으로 지탱할 수 있게 된다.In addition, the geometry bush 50 according to the present invention is configured such that the frame mounting bolt 51 and the inner buffer member 52 are integrally formed, and as a whole, than the conventional geometry bush having a plurality of holes in the load direction, The durability of the geometry bush 50 is improved by that, it is possible to effectively support all the load of the vehicle transmitted to the lower arm (1).

또한, 본 발명에 따른 지오메트리 부시(50)는 도 3에 도시된 화살표 M과 같이 차체의 전후방향 진동에 대해서는 인너탄성부재(553) 및 아웃터탄성부재(555)가 볼베어링부재(551)이 삽입된 인너케이스부재(552)와 아웃터케이스부재(554)를 각각 탄력적으로 지지하게 됨으로써, 차체의 전후방향에 대한 진동을 효과적으로 흡수 또는 감쇠시킬 수 있게 된다.In addition, the geometry bush 50 according to the present invention is the inner elastic member 553 and the outer elastic member 555 ball bearing member 551 is inserted into the front and rear vibration of the vehicle body as shown by arrow M shown in FIG. By elastically supporting the inner case member 552 and the outer case member 554, respectively, it is possible to effectively absorb or attenuate vibrations in the front and rear directions of the vehicle body.

또한, 본 발명에 따른 지오메트리 부시(50)는 도 3에 도시된 화살표 R과 같이 차체의 비틀림 진동에 대해서는 볼베어링부재(551)를 중심으로 상기 인너케이스부재(552) 및 아웃터케이스부재(554)가 서로 반대되는 지오메트리 부시(50)의 원주방향으로 각각 미동되는 움직임을 가지게 되고, 이에 따라 인너완충부재(52) 및 아웃터완충부재(53)도 동일한 방향으로 미동되는 움직임을 가지게 됨으로써, 차체의 비틀림 방향에 대한 진동도 효과적으로 흡수 또는 감쇠시킬 수 있게 되는 것이다.In addition, the geometry bush 50 according to the present invention has the inner case member 552 and the outer case member 554 with respect to the torsional vibration of the vehicle body as shown by the arrow R shown in Figure 3 around the ball bearing member 551 Each of the opposing geometric bushes 50 has a movement in the circumferential direction, respectively, and accordingly, the inner buffer member 52 and the outer buffer member 53 also have the movement in the same direction, the twisting direction of the vehicle body Vibration against can also be effectively absorbed or attenuated.

이상 설명한 바와 같이 본 발명에 의하면, 프레임마운팅볼트와 인너완충부재가 일체화로 구성되어 전체적인 지오메트리 부시의 내구력이 향상되면서 로어암으로 전달되는 차량의 모든 하중을 효과적으로 지탱할 수 있게 됨은 물론, 차체의 전후방향에 대한 진동과 차체의 비틀림 방향에 대한 진동도 모두 효과적으로 흡수 또는 감쇠시킬 수 있게 되어, 차량의 현가기능이 향상되고 이로 인해 승차감이 향상되면서 차량의 주행안정성도 향상되는 효과가 있게 된다.As described above, according to the present invention, the frame mounting bolt and the inner buffer member are integrally formed so that the overall durability of the geometry bush can be improved and effectively support all the loads of the vehicle transmitted to the lower arm, as well as the front and rear directions of the vehicle body. Both the vibration and the vibration in the torsional direction of the vehicle body can be effectively absorbed or attenuated, thereby improving the suspension function of the vehicle and thereby improving the riding comfort of the vehicle.

Claims (3)

차체프레임(2)에 나사결합되는 프레임마운팅볼트(51)와, 이 프레임마운팅볼트(51)에 의해 상하면 중앙부위가 관통되면서 상기 프레임마운팅볼트(51)의 외주면에 일체로 결합되는 인너완충부재(52)와, 이 인너완충부재(52)에 의해 상하면 중앙부위가 관통되면서 상기 인너완충부재(52)의 외주면과 경계면(L)을 갖추도록 결합되는 아웃터완충부재(53)와, 이 아웃터완충부재(53)의 외주면에 감싸여져 결합되는 외부파이프부재(54)와, 상기 인너완충부재(52) 및 아웃터완충부재(53)의 내부에서 경계면(L)을 가로지르도록 설치되면서 차체의 전후방향 진동과 비틀림력에 의한 진동을 흡수 또는 감쇠시키도록 하는 다수개의 진동흡수수단(55)을 포함하여 구성되는 자동차용 로어암의 지오메트리 부시.A frame mounting bolt 51 screwed to the body frame 2 and an inner buffer member integrally coupled to the outer circumferential surface of the frame mounting bolt 51 while the upper and lower center portions thereof are penetrated by the frame mounting bolt 51. 52), an outer buffer member 53 coupled to the upper and lower center portions by the inner buffer member 52 to have an outer circumferential surface and an interface L of the inner buffer member 52, and the outer buffer member. The outer pipe member 54 is wrapped and coupled to the outer circumferential surface of the 53 and installed inside the inner buffer member 52 and the outer buffer member 53 to cross the boundary surface L, and the front and rear vibration of the vehicle body. And a geometry bush of a lower arm for an automobile, comprising a plurality of vibration absorbing means (55) for absorbing or attenuating vibration caused by torsional force. 제 1항에 있어서, 상기 진동흡수수단(55)이 프레임마운팅볼트(51)를 중심으로 서로 90°의 사이간격을 가지도록 설치되는 것을 특징으로 하는 자동차용 로어암의 지오메트리 부시.The geometry bush of claim 1, wherein the vibration absorbing means (55) is installed to have an interval of 90 ° with respect to the frame mounting bolt (51). 제 1항 또는 제 2항에 있어서, 상기 진동흡수수단(55)이 인너완충부재(52) 및 아웃터완충부재(53)의 경계면(L)사이에서 상기 인너완충부재(52)와 아웃터완충부재(53)에 각각 중첩을 이루도록 설치되는 볼베어링부재(551)과, 상기 경계면(L)을 중심으로 인너완충부재(52)내에 설치되고 인너완충부재(52)쪽으로 중첩되는 볼베어링(551)의 일측 외주면을 감싸면서 보호하는 인너케이스부재(552)와, 이 인너케이스부재(552)에 일단이 지지되고 상기 프레임마운팅볼트(51)의 외주면에 타단이 지지되도록 상기 인너완충부재(52)내에 형성된 인너관통구멍(52a)으로 설치되는 인너탄성부재(553)와, 상기 경계면(L)을 중심으로 아웃터완충부재(53)내에 설치되고 아웃터완충부재(53)쪽으로 중첩되는 볼베어링(551)의 타측 외주면을 감싸면서 보호하는 아웃터케이스부재(554)와, 이 아웃터케이스부재(554)에 일단이 지지되고 상기 외부파이프부재(54)의 외주면에 타단이 지지되도록 상기 아웃터완충부재(53)내에 형성된 아웃터관통구멍(53a)으로 설치되는 아웃터탄성부재(555)로 구성되는 것을 특징으로 하는 자동차용 로어암의 지오메트리 부시.According to claim 1 or claim 2, wherein the vibration absorbing means 55 is the inner buffer member 52 and the outer buffer member (52) between the boundary surface (L) of the inner buffer member 52 and the outer buffer member (53) (3). 53 and the outer circumferential surface of one side of the ball bearing member 551 installed to overlap each other, and the ball bearing 551 installed in the inner buffer member 52 about the boundary surface L and overlapping the inner buffer member 52. Inner case member 552 that wraps and protects, and an inner through hole formed in the inner buffer member 52 such that one end is supported by the inner case member 552 and the other end is supported by an outer circumferential surface of the frame mounting bolt 51. While wrapping the inner elastic member 553 to be installed (52a) and the other outer peripheral surface of the ball bearing 551 is installed in the outer buffer member 53 around the boundary surface (L) and overlaps toward the outer buffer member 53. Outer case member 554 to protect and this out One end is supported by the case member 554 and the outer elastic member 555 is installed by the outer through-hole 53a formed in the outer buffer member 53 so that the other end is supported on the outer circumferential surface of the outer pipe member 54. Geometry bush of the lower arm for automobiles, characterized in that the.
KR10-2001-0054026A 2001-09-04 2001-09-04 geometry bush of lower arm for vehicle KR100412870B1 (en)

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CA2599375C (en) 2006-09-06 2011-06-21 Lg Electronics Inc. Clogging detecting system for dryer

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63235110A (en) * 1987-03-24 1988-09-30 Toyota Motor Corp Front suspension for vehicle
KR19980044501A (en) * 1996-12-06 1998-09-05 박병재 Suspension bushing
KR19980048749U (en) * 1996-12-30 1998-09-25 양재신 Bush
KR19980048877U (en) * 1996-12-30 1998-10-07 양재신 Bush
KR20020056505A (en) * 2000-12-29 2002-07-10 이계안 A bus air suspension for protecting abrasion bush thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63235110A (en) * 1987-03-24 1988-09-30 Toyota Motor Corp Front suspension for vehicle
KR19980044501A (en) * 1996-12-06 1998-09-05 박병재 Suspension bushing
KR19980048749U (en) * 1996-12-30 1998-09-25 양재신 Bush
KR19980048877U (en) * 1996-12-30 1998-10-07 양재신 Bush
KR20020056505A (en) * 2000-12-29 2002-07-10 이계안 A bus air suspension for protecting abrasion bush thereof

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