KR20050104446A - Rack bush of steering device - Google Patents

Rack bush of steering device Download PDF

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Publication number
KR20050104446A
KR20050104446A KR1020040029404A KR20040029404A KR20050104446A KR 20050104446 A KR20050104446 A KR 20050104446A KR 1020040029404 A KR1020040029404 A KR 1020040029404A KR 20040029404 A KR20040029404 A KR 20040029404A KR 20050104446 A KR20050104446 A KR 20050104446A
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KR
South Korea
Prior art keywords
rack
housing
rubber member
bush
rack housing
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KR1020040029404A
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Korean (ko)
Inventor
이영규
Original Assignee
주식회사 만도
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Priority to KR1020040029404A priority Critical patent/KR20050104446A/en
Publication of KR20050104446A publication Critical patent/KR20050104446A/en

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    • GPHYSICS
    • G02OPTICS
    • G02CSPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C9/00Attaching auxiliary optical parts
    • G02C9/02Attaching auxiliary optical parts by hinging
    • GPHYSICS
    • G02OPTICS
    • G02CSPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C5/00Constructions of non-optical parts
    • G02C5/22Hinges
    • G02C5/2263Composite hinges, e.g. for varying the inclination of the lenses
    • GPHYSICS
    • G02OPTICS
    • G02CSPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C2200/00Generic mechanical aspects applicable to one or more of the groups G02C1/00 - G02C5/00 and G02C9/00 - G02C13/00 and their subgroups
    • G02C2200/02Magnetic means

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Ophthalmology & Optometry (AREA)
  • Optics & Photonics (AREA)
  • Support Of The Bearing (AREA)
  • Power Steering Mechanism (AREA)

Abstract

본 발명은 양측이 개구된 원통형으로 이루어져 외부면은 랙하우징의 내부면과 밀착 고정되고, 내부면은 랙바의 외부면과 밀착되어 랙바의 이동을 안내하고, 랙하우징의 내부 오일이 누설되는 것을 방지하는 스티어링장치의 랙부시 조립체에 있어서, 양측이 개구된 원통형으로 이루어지고, 외주에는 탄성재인 러버부재가 가류 접착되어 랙하우징에 설치시, 러버부재의 탄성력에 의해 축방향 유격과 반경방향 유격이 방지되는 것을 특징으로 하는 랙부시 조립체에 관한 것이다. The present invention consists of a cylindrical opening on both sides, the outer surface is fixed in close contact with the inner surface of the rack housing, the inner surface is in close contact with the outer surface of the rack bar to guide the movement of the rack bar, preventing the internal oil of the rack housing from leaking In the rack bush assembly of the steering apparatus, both sides are formed in an open cylindrical shape, the rubber member is elastically bonded to the outer circumference to prevent axial play and radial play due to the elastic force of the rubber member when installed in the rack housing It relates to a rack bush assembly characterized in that.

Description

스티어링장치의 랙부시{RACK BUSH OF STEERING DEVICE}Rack Bush of Steering System {RACK BUSH OF STEERING DEVICE}

본 발명은 스티어링장치의 랙부시에 관한 것으로서, 더욱 상세하게는 랙의 이동을 지지하는 랙부시의 변형으로 인해 발생되는 축방향 및 반경방향 유격이 보상되는 스티어링장치의 랙부시에 관한 것이다. The present invention relates to a rack bush of a steering apparatus, and more particularly, to a rack bush of a steering apparatus is compensated for the axial and radial play caused by the deformation of the rack bush to support the movement of the rack.

일반적으로 차량의 진행방향을 변경하기 위해 마련되는 스티어링장치는 차량의 운전석에 마련된 스티어링휠과 이에 연결된 스티어링컬럼, 그리고 스티어링컬럼과 교축되도록 배치된 기어박스등으로 구비된다. In general, the steering apparatus provided to change the driving direction of the vehicle is provided with a steering wheel provided in the driver's seat of the vehicle, a steering column connected thereto, and a gearbox arranged to be throttled with the steering column.

특히 기어박스를 형성하는 랙하우징의 내부에는 축방향으로 슬라이딩 이동되는 랙바가 마련되어 스티어링휠과 스티어링컬럼을 통해 전달된 조향동력을 그 외부 양측의 조향륜으로 전달하게 된다. Particularly, a rack bar that is slidably moved in the axial direction is provided inside the rack housing forming the gear box to transmit steering power transmitted through the steering wheel and the steering column to the steering wheels on both outer sides thereof.

도 1에 도시된 바와 같이, 중공으로 마련된 랙하우징(1)은 양측이 개구형성되는데, 그 중간측은 미도시된 스티어링컬럼과 연결된다. 그리고 랙하우징(1)의 내부에는 스티어링컬럼측으로부터 동력을 전달받아 축방향으로 이동되도록 랙바(2)가 마련된다. As shown in Figure 1, the rack housing (1) provided in a hollow is formed on both sides of the opening, the middle side is connected to the not shown steering column. In addition, the rack bar 2 is provided inside the rack housing 1 to receive power from the steering column side and move in the axial direction.

이 랙바(2)는 중간 일측에 랙이 형성되어 이를 통해 스티어링컬럼측의 피니언과 연결되고, 중간 타측에는 피스톤이 마련되어, 피니언에 의한 직접적인 동력전 달과 피스톤의 양측으로 공급되는 유압에 의해 랙하우징(1)의 내부에서 슬라이딩 이동된다. The rack bar (2) has a rack formed on one side of the middle is connected to the pinion on the steering column side, the middle is provided with a piston, the rack housing by the direct power transmission by the pinion and the hydraulic pressure supplied to both sides of the piston It is slid in the interior of (1).

한편, 개구형성된 랙하우징(1)의 양측에는 랙바(2)의 이동을 안내함과 동시에 랙하우징(1) 내부 유압에 의한 오일누설을 방지할 수 있도록 랙부시(3)가 마련되는데, 이 랙부시(3)는 플라스틱재를 중공으로 마련한 것으로서 그 외주면은 랙하우징(1)의 내부와 밀착되어 고정되고, 그 내부면에는 랙 바(2)의 외부면과 밀착된다. On the other hand, the rack bush (3) is provided on both sides of the opening formed rack housing (1) to guide the movement of the rack bar (2) and at the same time to prevent oil leakage by the hydraulic pressure inside the rack housing (1), this rack The bush 3 is provided with a hollow plastic material and its outer circumferential surface is in close contact with and fixed to the inside of the rack housing 1, and the inner surface is in close contact with the outer surface of the rack bar 2.

또한, 랙부시(3)의 랙하우징(1)의 개구된측으로는 이를 지지할 수 있도록 외주면에 랙스톱퍼(4)가 설치되는데, 이 랙스톱퍼(4)는 랙하우징(1)은 입구 외주측에 코킹되어 랙부시(3)를 지지하게 된다.In addition, a rack stopper 4 is installed on the outer circumferential surface of the rack bushing 3 so as to support the open side of the rack housing 1, which is the rack housing 1 of the inlet outer peripheral side. Caulked at the to support the rack bush (3).

그리고 랙부시(3)와 랙스톱퍼(4) 사이에는 러버링(5)이 게재되어 축방향 유격을 보정해준다. And a rubber ring (5) is placed between the rack bush (3) and the rack stopper (4) to correct the axial play.

그러나, 이와 같이 구성된 종래의 스티어링장치의 랙부시는, 축방향 유격은 러버링에 의해 보정해 줄수 있으나 반경방향 유격은 보정해 줄 수 없다. 이로써 랙바의 동작시에 소음 및 진동이 발생되는 문제점이 있었다. However, in the rack bush of the conventional steering apparatus configured as described above, the axial play can be corrected by rubber ringing, but the radial play cannot be corrected. As a result, there was a problem in that noise and vibration were generated during operation of the rack bar.

본 발명은 이와 같은 종래의 문제점을 해결하기 위한 것으로서, 본 발명은 축방향 및 반경방향으로의 유격을 보상할 수 있도록 마련된 스티어링장치의 랙부시를 제공하는데 그 목적이 있다. The present invention is to solve such a conventional problem, the present invention is to provide a rack bush of the steering apparatus provided to compensate for the play in the axial and radial direction.

본 발명은 상기의 목적을 달성하기 위하여 양측이 개구된 원통형으로 이루어져 외부면은 랙하우징의 내부면과 밀착 고정되고, 내부면은 랙바의 외부면과 밀착되어 랙바의 이동을 안내하고, 랙하우징의 내부 오일이 누설되는 것을 방지하는 스티어링장치의 랙부시 조립체에 있어서, 양측이 개구된 원통형으로 이루어지고, 외주에는 탄성재인 러버부재가 가류 접착되어 랙하우징에 설치시, 러버부재의 탄성력에 의해 축방향 유격과 반경방향 유격이 방지되는 것을 특징으로 하는 랙부시 조립체를 제공한다.In order to achieve the above object, the present invention has a cylindrical shape with both sides opened, and the outer surface is fixed to the inner surface of the rack housing in close contact with the inner surface of the rack bar to guide the movement of the rack bar, and the rack housing In the rack bush assembly of the steering device to prevent the leakage of the internal oil, the two sides are formed in an open cylindrical shape, the rubber member is elastically bonded to the outer circumference when installed in the rack housing in the axial direction by the elastic force of the rubber member It provides a rack bush assembly characterized in that the play and radial play is prevented.

이하, 첨부된 도면을 참조하여 본 발명을 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

도 2는 본 발명에 따른 랙부시의 설치상태를 나타낸 단면도이다.2 is a cross-sectional view showing an installation state of a rack bush according to the present invention.

도 2에 도시된 바와 같이, 중공으로 마련된 랙하우징(10)은 양측이 개구형성되는 중공관으로서, 로터리밸브를 통해 공급되는 오일이 유동되는 공간을 형성하며, 개구된 입구에는 실링을 위한 부품들이 설치되고, 그 외주측에는 신축가능하도록 주름관이 설치된다.As shown in FIG. 2, the rack housing 10 provided as a hollow is a hollow tube having openings at both sides, and forms a space in which oil supplied through a rotary valve flows, and parts for sealing are opened at the opening. A corrugated pipe is installed on the outer circumferential side thereof so as to be elastic.

그리고 랙하우징(10)의 중간측은 스티어링칼럼과 연결되는데, 이 랙하우징(10)의 내부에는 스티어링칼럼측으로부터 동력을 전달받아 축방향으로 이동되도록 랙바(20)가 마련된다. 즉, 랙바(20)는 중간 일측에 랙이 형성되어 이를 통해 스티어링칼럼측의 피니언과 연결되고, 중간 타측에는 피스톤이 마련되어, 피니언에 의한 동력전달과 피스톤 양측의 유압에 의해 랙하우징(10)의 내부에서 슬라이딩 이동되어 그 좌,우측의 타이로드엔드를 동작시키게 된다.And the middle of the rack housing 10 is connected to the steering column, the rack housing 10 is provided with a rack bar 20 to be moved in the axial direction by receiving power from the steering column side. That is, the rack bar 20 is a rack is formed on one side of the middle is connected to the pinion on the steering column side, the middle is provided with a piston, the power of the pinion and the hydraulic pressure of both sides of the piston housing the piston housing It is slidably moved inside to operate the left and right tie rod ends.

한편, 랙하우징(10)의 양측에는 랙바(20)의 이동을 안내함과 동시에 랙하우징(10) 내측의 오일이 외측으로 누설되는 것을 방지할 수 있도록 랙부시(30)가 마련된다.On the other hand, both sides of the rack housing 10 is provided with a rack bush 30 to guide the movement of the rack bar 20 and at the same time to prevent the oil inside the rack housing 10 from leaking to the outside.

랙부시(30)는 중공원통관으로서 재질은 스틸이고, 일단에는 외측으로 연장되는 플랜지 형태의 돌출부(35)가 원주를 따라 형성된다. 랙부시의 외주에는 신축성이 우수한 고무재질의 러버부재(37)를 가류접착한다. 상기 러버부재(37)의 두께는 돌출부(35)의 외측으로 소정량 돌출되도록 하여 랙하우징(10)에 설치시 랙하우징(10)의 내주면과 탄성밀착되도록 하고, 러버부재(37)의 폭도 랙부시(30)의 폭 보다 크게하여 랙부시(30)의 일단 보다 외측으로 소정량 돌출되도록 함으로써 후술하는 랙스톱퍼(40)의 일단면과 탄성밀착되도록 한다. The rack bush 30 is a hollow park clearance material is made of steel, and one end of the flange-shaped protrusion 35 extending outward is formed along the circumference. On the outer circumference of the rack bush, a rubber member 37 made of rubber material having excellent elasticity is subjected to vulcanization. The thickness of the rubber member 37 is to protrude a predetermined amount to the outside of the protrusion 35 so as to elastically close contact with the inner peripheral surface of the rack housing 10 when installed in the rack housing 10, the width of the rubber member 37 rack It is larger than the width of the bush 30 so that a predetermined amount protrudes outward from one end of the rack bush 30 so as to be elastically in close contact with one end surface of the rack stopper 40 to be described later.

랙하우징(10)의 개구된측으로는 랙부시(30)를 지지할 수 있도록 랩스톱퍼(40)가 설치되는데, 랙하우징(10)의 외주측이 코킹되어 랙하우징(10)에 고정되어 랙부시를 지지하게 된다.A lap stopper 40 is installed on the opened side of the rack housing 10 to support the rack bush 30. The outer circumferential side of the rack housing 10 is caulked and fixed to the rack housing 10 to fix the rack bush. Will be supported.

이와 같이 구성된 본 발명의 스티어링장치의 랙부시(30)는 랙바(20)의 외주면에 설치되어 랙하우징(10)의 내부로 삽입되는데, 이때 전술한 바와 같이 러버부재(37)의 외주면이 랙하우징(10)의 내주면과 탄성 밀착되고, 또한 러버부재(37)의 일단면이 랙하우징(10)의 개구부에 고정된 랙스톱퍼(40)의 일단면과 탄성 밀착되어 랙바(20)가 축방향으로 슬라이딩 이동될 때 러버부재(37)의 탄성력에 의하여 축방향과 반경방향의 유격이 보정된다.The rack bush 30 of the steering apparatus of the present invention configured as described above is installed on the outer circumferential surface of the rack bar 20 and inserted into the rack housing 10, wherein the outer circumferential surface of the rubber member 37 is the rack housing as described above. The inner circumferential surface of the 10 is elastically in close contact with each other, and one end surface of the rubber member 37 is elastically in close contact with the one end surface of the rack stopper 40 fixed to the opening of the rack housing 10 so that the rack bar 20 is in the axial direction. The clearance in the axial direction and the radial direction is corrected by the elastic force of the rubber member 37 when sliding.

이상에서 상세히 설명한 바와 같이, 본 발명에 따른 스티어링장치의 랙부시는, 단순한 구조로서 랙부시의 기능인 랙바의 이동을 안내함과 동시에 랙하우징 내부 유압에 의한 오일누설을 방지할 수 있고, 또한 러버부재에 의해 반경방향과 축방향 모두 유격을 보정해 줄 수 있다.As described in detail above, the rack bush of the steering apparatus according to the present invention, as a simple structure, can guide the movement of the rack bar, which is a function of the rack bush, and at the same time prevent oil leakage by hydraulic pressure inside the rack housing, and This can compensate for play in both the radial and axial directions.

도 1은 종래 스티어링장치의 랙부시를 보인 측단면도이다. 1 is a side sectional view showing a rack bush of a conventional steering apparatus.

도 2는 본 발명에 따른 랙부시의 설치상태를 보인 단면도이다. 2 is a cross-sectional view showing an installation state of a rack bush according to the present invention.

<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>

10 : 랙하우징 20:랙바10: rack housing 20: rack bar

30 : 랙부시 35 : 돌출부30: rack bush 35: protrusion

37 : 러버부재 40:랙스톱퍼37: rubber member 40: rack stopper

Claims (1)

양측이 개구된 원통형으로 이루어져 외부면은 랙하우징의 내부면과 밀착 고정되고, 내부면은 랙바의 외부면과 밀착되어 랙바의 이동을 안내하고, 랙하우징의 내부 오일이 누설되는 것을 방지하는 스티어링장치의 랙부시 조립체에 있어서,The outer surface is formed of a cylindrical opening on both sides and the outer surface is fixed in close contact with the inner surface of the rack housing, the inner surface is in close contact with the outer surface of the rack bar to guide the movement of the rack bar, the steering device to prevent leakage of the inner oil of the rack housing In the rack bush assembly, 양측이 개구된 원통형으로 이루어지고, 외주에는 탄성재인 러버부재가 가류 접착되어 랙하우징에 설치시, 러버부재의 탄성력에 의해 축방향 유격과 반경방향 유격이 방지되는 것을 특징으로 하는 랙부시 조립체. The rack bush assembly, characterized in that both sides are formed in an open cylindrical shape, the rubber member is elastically bonded to the outer circumference so that when the rubber member is installed in the rack housing, the axial play and the radial play are prevented by the elastic force of the rubber member.
KR1020040029404A 2004-04-28 2004-04-28 Rack bush of steering device KR20050104446A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020040029404A KR20050104446A (en) 2004-04-28 2004-04-28 Rack bush of steering device

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KR20050104446A true KR20050104446A (en) 2005-11-03

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