KR0132323Y1 - Rack bush for automobile steering system - Google Patents

Rack bush for automobile steering system Download PDF

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Publication number
KR0132323Y1
KR0132323Y1 KR2019960008225U KR19960008225U KR0132323Y1 KR 0132323 Y1 KR0132323 Y1 KR 0132323Y1 KR 2019960008225 U KR2019960008225 U KR 2019960008225U KR 19960008225 U KR19960008225 U KR 19960008225U KR 0132323 Y1 KR0132323 Y1 KR 0132323Y1
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KR
South Korea
Prior art keywords
rack
stopper
bush
rack bush
fitting
Prior art date
Application number
KR2019960008225U
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Korean (ko)
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KR970058044U (en
Inventor
김태수
Original Assignee
이관기
대우중공업주식회사
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Priority to KR2019960008225U priority Critical patent/KR0132323Y1/en
Publication of KR970058044U publication Critical patent/KR970058044U/en
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Publication of KR0132323Y1 publication Critical patent/KR0132323Y1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D3/00—Steering gears
    • B62D3/02—Steering gears mechanical
    • B62D3/12—Steering gears mechanical of rack-and-pinion type
    • B62D3/126—Steering gears mechanical of rack-and-pinion type characterised by the rack
    • 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
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B4/00—Shrinkage connections, e.g. assembled with the parts at different temperature; Force fits; Non-releasable friction-grip fastenings
    • F16B4/004—Press fits, force fits, interference fits, i.e. fits without heat or chemical treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2304/00—Optimising design; Manufacturing; Testing
    • B60Y2304/05—Reducing production costs, e.g. by redesign

Abstract

본 고안은 자동차조향장치의 랙기어용 랙부시에 관한 것으로서 피니언의 회전력을 전달받아 수평운동을 하면서 끝단이 타이로드(13)와 연결되어 바퀴를 움직이도록 하는 조향장치(10)의 랙바(11)를 지지하는 랙부시(12)를 구성함에 있어서; 상기 랙부시(12)의 끝단에는 외주연을 돌출시켜 몸체와 일체로된 스토퍼(15)를 형성하고 상기 스토퍼(15)의 내측으로는 끼움돌기(16)를 더 가지도록하여 케이스파이프(17)의 끝단부에 형성된 끼움홈(18)에 억지끼움에 의하여 결합이 되도록 한 것이 특징이다.The present invention relates to a rack bushing for a rack gear of an automobile steering device. The rack bar 11 of the steering device 10 which is connected to the tie rods 13 and moves the wheels while the horizontal motion is received by the rotational force of the pinion. In constructing a rack bush 12 for supporting; The end of the rack bush 12 protrudes the outer periphery to form a stopper 15 integral with the body, and to have a fitting protrusion 16 inside the stopper 15 to further have a case pipe 17. It is characterized in that it is coupled to the fitting groove 18 formed at the end by the interference fit.

이상과 같은 본 고안은 랙부시상에 스토퍼를 일체로 형성하여 부품수를 절감하여 원가절감에 기여하고 조립성을 향상시킴은 물론, 고정성이 뛰어나 랙바의 원활한 운동에도 기여하는 효과가 큰 고안이다.The present invention as described above is a great effect to form a stopper integrally on the rack bushing to reduce the number of parts to contribute to cost reduction and improve assembly, as well as to contribute to the smooth movement of the rack bar. .

Description

자동차조향장치의 랙기어용 랙부시Rack Bushing for Rack Gear of Automobile Steering System

제1도는 본 고안의 랙부시와 케이스파이프의 분해 사시도.1 is an exploded perspective view of the rack bush and the case pipe of the present invention.

제2도는 본 고안이 적용된 조향장치의 일부 단면도.2 is a partial cross-sectional view of the steering apparatus to which the present invention is applied.

제3도는 종래의 랙부시가 적용된 조향장치의 일부 단면도.3 is a partial cross-sectional view of a steering apparatus to which a conventional rack bush is applied.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

10 : 조향장치 11 : 랙바10: steering device 11: rack bar

12 : 랙부시 15 : 스토퍼12: rack bush 15: stopper

16 : 끼움돌기 17 : 케이스파이프16: fitting protrusion 17: case pipe

18 : 끼움홈18: fitting groove

본 고안은 자동차조향장치의 랙기어용 랙부시에 관한 것으로서 더욱 상세하게는 스토퍼기능을 더 가지도록 한 것이다.The present invention relates to a rack bush for a rack gear of a vehicle steering apparatus, and more particularly, to have a stopper function.

자동차의 조향장치에는 바퀴를 움직이기 위하여 조향휠의 회전력을 전달받은 피니언의 회전운동을 랙에 전달하여 랙을 좌, 우로 수평운동을 시켜서 최종적으로 타이로드에 영향을 전달하게 된 구조이다.In the steering device of the car, the pinion, which receives the rotational force of the steering wheel, is transferred to the rack to move the rack horizontally left and right to move the wheels, thereby finally transmitting the influence to the tie rods.

이 과정에서 랙바의 좌, 우 수평운동 방향을 지지하고 유동범위를 한정하기 위하여 랙부시를 케이스파이프에 강제 압입을하여 사용하였었다.In this process, the rack bush was forcedly pressed into the case pipe to support the left and right horizontal movement directions of the rack bar and to limit the flow range.

이러한 종래의 기술이 제3도에 도시되어 있으며 이를 보다 상세하게 살펴보면 다음과 같다.This conventional technique is shown in FIG. 3 and looks at it in more detail as follows.

케이스파이프(1)의 내부에 랙부시(2)를 강제압입을하여 랙바(3)가의 수평운동을 안정되게 지지하도록 하고 있으며, 랙바(3)의 끝단에는 랙바(30)의 운동범위를 한정하기 위한 스토퍼(4)를 고정하여서 랙바(3)의 최대운동시 랙바(3)의 끝단에 고정된 스토퍼(4)가 케이스파이프(1)의 단부에 연접되게하여 랙바(3)의 운동범위를 제어하도록 된 구조이다.The rack bush 2 is forcedly pressed into the inside of the case pipe 1 to stably support the horizontal movement of the rack bar 3, and to limit the range of motion of the rack bar 30 at the end of the rack bar 3. By fixing the stopper 4 for the maximum movement of the rack bar (3), the stopper (4) fixed to the end of the rack bar (3) is connected to the end of the case pipe (1) to control the movement range of the rack bar (3) It is intended to be.

이러한 종래의 경우에는 랙부시가 플라스틱으로 사출되는 관계로 변형에 의하여 케이스파이프내에 긴말한 상태로 압압되지 않는 경우가 허다하고 이로 인하여 랙바가 수평운동할 시 랙부시가 유동되어 랙바의 지지를 원활하게 수행치 못함은 물론 랙부시의 좌, 우 유동에 따른 마찰로 심한 소음이나는 문제점이 있었다.In such a conventional case, since the rack bush is injected into the plastic, it is often not pressed in the case pipe in a compact state due to the deformation. As a result, when the rack bar moves horizontally, the rack bush flows to smoothly support the rack bar. Of course, there was a problem of severe noise due to friction due to the left and right flow of the rack bush.

그리고, 랙바가 운동할 시 랙부시가 편승하여 이탈하는 사례를 방지하기 위하여 케이스파이프에 고정와셔(CIRCLIP; 5)을 이용하여 랙부시를 고정하여야 하고, 별도의 스토퍼를 랙바의 끝단에 고정하여야 하므로 많은 부품수를 가지게 되므로 조립성이 저하되는 등 많은 문제점들이 있었다.And, in order to prevent the case that the rack bush is piggybacked when moving the rack bar, the rack bush should be fixed to the case pipe by using a fixing washer (CIRCLIP; 5), and a separate stopper should be fixed to the end of the rack bar. Since there are many parts, there are many problems such as degradability.

이에 본 고안에서는 상기한 문제점들을 해결하기 위하여 안출이 된 것으로서 랙부시에 스토퍼를 일체로 형성하여 부품수를 줄임은 물론 원활하게 랙바를 지지할 수 있도록 한 것이 특징이다.Therefore, the present invention has been designed to solve the above problems, it is characterized in that the stopper is integrally formed in the rack bush to reduce the number of parts as well as to smoothly support the rack bar.

이하 첨부되는 도면과 관련하여 본 고안의 구성과 작용 및 효과에 대하여 설명을 하면 다음과 같다.Hereinafter, the configuration, operation and effects of the present invention will be described with reference to the accompanying drawings.

제1도는 본 고안의 랙부시와 케이스파이프의 분해 사시도, 제2도는 본 고안이 적용된 조향장치의 일부 단면도로서 함께 설명을 한다.1 is an exploded perspective view of a rack bush and a case pipe of the present invention, and FIG. 2 is a partial cross-sectional view of a steering apparatus to which the present invention is applied.

피니언의 회전력을 전달받아 수평운동을 하면서 끝단이 타이로드(13)와 연결되어 바퀴를 움직이도록 하는 조향장치(10)의 랙바(11)를 지지하는 랙부시(12)를 구성함에 있어서; 상기 랙부시(12)의 끝단에는 외주연을 돌출시켜 몸체와 일체로된 스토퍼(15)를 형성하고 상기 스토퍼(15)의 내측으로는 끼움돌기(16)를 더 가지도록하여 케이스파이프(17)의 끝단부에 형성된 끼움홈(18)에 끼움이 되도록 하였다.In configuring the rack bush 12 for supporting the rack bar 11 of the steering device 10 to move the wheels to the end is connected to the tie rod 13 while the horizontal movement is received by the rotational force of the pinion; The end of the rack bush 12 protrudes the outer periphery to form a stopper 15 integral with the body, and to have a fitting protrusion 16 inside the stopper 15 to further have a case pipe 17. To be fitted in the fitting groove 18 formed at the end of the.

상기 랙부시(12)와 케이스파이프(17)에 형성되는 끼움돌기(16)와 끼움홈(18)은 상호 억지끼움이 이루어질 수 있도록 하는 것이 랙부시(12)의 유동이나 이탈을 방지하는데 용이하다.The fitting protrusion 16 and the fitting groove 18 formed on the rack bush 12 and the case pipe 17 can easily prevent interference between the rack bush 12 and the separation of the rack bush 12. .

이상과 같이 구성된 본 고안의 작용 및 효과에 대하여 더욱 상세하게 설명을 하면 다음과 같다.Referring to the operation and effects of the present invention configured as described above in more detail.

먼저, 랙부시(12)를 케이스파이프(17)와 결합을 하고 종래와 같은 통상적인 방법에 의하여 랙바(11)를 지지하도록 한다.First, the rack bush 12 is coupled to the case pipe 17 to support the rack bar 11 by a conventional method as in the prior art.

상기 랙부시(12)를 케이스파이프(17)와 결합을 할 경우에는 랙부시(12)의 끝단에 일체로 형성된 스토퍼(15)의 내측으로 돌출된 끼움돌기(16)가 케이스파이프(17)의 끝단에 형성된 끼움홈(18)상에 억지끼움을하여 결합을 시킨다.When the rack bush 12 is coupled to the case pipe 17, the fitting protrusion 16 protruding into the stopper 15 integrally formed at the end of the rack bush 12 includes the case pipe 17. The fitting is made by fitting on the fitting groove 18 formed at the end.

상기와 같이 케이스파이프(17)에 결합된 랙부시(12)의 내경에는 랙바(11)가 진입되어 랙부시(12)에 의하여 지지가 되면서 수평운동을 하게 된다.As described above, the rack bar 11 enters the inner diameter of the rack bush 12 coupled to the case pipe 17 and is horizontally supported while being supported by the rack bush 12.

이 과정에서 랙바(11)가 최대운동치에 도달하게되면 랙바(11)의 끝단부와 랙부시(12)의 끝단부에 일체로형성시킨 스토퍼(15)와 연접되게 되므로 스토퍼역할을 수행하게 되는 것이다.In this process, when the rack bar 11 reaches the maximum movement value, the rack bar 11 is connected to the stopper 15 formed integrally with the end of the rack bar 11 and the end of the rack bush 12, thereby performing a stopper role. will be.

그리고, 랙바(11)가 수평운동을 할 시 랙부시(12)가 랙바(11)에 편승하여 이탈내지는 유동하는 현상은 랙부시(12)에 형성된 스토퍼(15)의 내측으로 돌출시킨 끼움돌기(16)가 케이스파이프(17)의 끝단에 형성된 끼움홈(18)에 억지끼움이 되어 있으므로 방지가 되는 것이다.In addition, when the rack bar 11 moves horizontally, the phenomenon that the rack bush 12 escapes by piggybacking on the rack bar 11 is a fitting protrusion protruding into the stopper 15 formed in the rack bush 12 ( 16 is prevented because the fitting groove 18 is formed in the end of the case pipe 17.

이상과 같은 본 고안은 랙부시상에 스토퍼를 일체로 형성하여 부품수를 절감하여 원가절감에 기여하고 조립성을 향상시킴은 물론, 고정성이 뛰어나 랙바의 원활한 운동에도 기여하는 효과가 큰 고안이다.The present invention as described above is a great effect to form a stopper integrally on the rack bushing to reduce the number of parts to contribute to cost reduction and improve assembly, as well as to contribute to the smooth movement of the rack bar. .

Claims (1)

피니언의 회전력을 전달받아 수평운동을 하면서 끝단이 타이로드(13)와 연결되어 바퀴를 움직이도록 하는 조향장치(10)의 랙바(11)를 지지하기 위하여, 일단에 외주연을 돌출시켜 몸체와 일체로된 스토퍼(15)를 형성한 랙부시(12)를 케이스파이프(17)에 끼움 고정하는 자동차조향장치의 랙기어용랙부시에 있어서; 상기 랙부시(12)의 스토퍼(15)의 지그재그형상의 다수개의 끼움돌기(16)를 가지고, 상기 랙부시(12)가 삽입되는 케이스파이프(17)의 끝단부에는 상기 끼움돌기(16)가 억지끼움되는 대응형상의 다수개의 끼움홈(18)을 구비하여; 상기 끼움돌기(16)와 끼움홈(18)은 서로 억지끼움고정되는 것을 특징으로 하는 자동차조향장치의 랙기어용 랙부시.In order to support the rack bar 11 of the steering device 10, which is connected to the tie rod 13, the end of which is connected to the tie rod 13, while the horizontal motion is received by the rotational force of the pinion, the outer periphery is protruded at one end to integrate with the body. A rack bush for a rack gear of an automobile steering apparatus for fitting the rack bush 12 having the stopper 15 formed therein into the case pipe 17; The fitting protrusion 16 has a plurality of fitting protrusions 16 in a zigzag shape of the stopper 15 of the rack bush 12, and the fitting protrusion 16 is provided at an end of the case pipe 17 into which the rack bush 12 is inserted. A plurality of fitting grooves 18 of corresponding shapes that are forcibly fitted; The fitting protrusion 16 and the fitting groove 18 is a rack bushing for the rack gear of the automobile steering apparatus, characterized in that the interference fit is fixed to each other.
KR2019960008225U 1996-04-10 1996-04-10 Rack bush for automobile steering system KR0132323Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019960008225U KR0132323Y1 (en) 1996-04-10 1996-04-10 Rack bush for automobile steering system

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Application Number Priority Date Filing Date Title
KR2019960008225U KR0132323Y1 (en) 1996-04-10 1996-04-10 Rack bush for automobile steering system

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KR970058044U KR970058044U (en) 1997-11-10
KR0132323Y1 true KR0132323Y1 (en) 1998-12-15

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010084800A (en) * 2000-02-29 2001-09-06 밍 루 Sleeve flow prevention structure of rack-bar for vehicle steering gear
KR20020012843A (en) * 2000-08-09 2002-02-20 밍 루 Rack bush of steering device for vehicle
KR100452299B1 (en) * 2000-12-27 2004-10-12 주식회사 만도 Rack bush and rack stopper of steering device

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