KR20020087694A - Inner ball joint of steering device for vehicle - Google Patents

Inner ball joint of steering device for vehicle Download PDF

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Publication number
KR20020087694A
KR20020087694A KR1020010026621A KR20010026621A KR20020087694A KR 20020087694 A KR20020087694 A KR 20020087694A KR 1020010026621 A KR1020010026621 A KR 1020010026621A KR 20010026621 A KR20010026621 A KR 20010026621A KR 20020087694 A KR20020087694 A KR 20020087694A
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KR
South Korea
Prior art keywords
rack
ball joint
housing
inner ball
vehicle
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KR1020010026621A
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Korean (ko)
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정을고
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주식회사 만도
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Priority to KR1020010026621A priority Critical patent/KR20020087694A/en
Publication of KR20020087694A publication Critical patent/KR20020087694A/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62DMOTOR VEHICLES; TRAILERS
    • B62D7/00Steering linkage; Stub axles or their mountings
    • B62D7/16Arrangement of linkage connections
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C11/00Pivots; Pivotal connections
    • F16C11/04Pivotal connections
    • F16C11/06Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60YINDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2306/00Other features of vehicle sub-units
    • B60Y2306/09Reducing noise

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Pivots And Pivotal Connections (AREA)
  • Steering-Linkage Mechanisms And Four-Wheel Steering (AREA)

Abstract

PURPOSE: An inner ball joint of the steering system for a vehicle is provided to remove the uneasiness of a driver and to improve the reliability of a vehicle by reducing the shock noise between a rack stopper and an inner ball joint with a shock absorbing member. CONSTITUTION: A shock absorbing member(100) is prepared in between a rack stopper(50) and an inner ball joint(70). The shock absorbing member is made of plastic. The shock absorbing member is formed outside a threaded portion(81) of a ball housing(80) directly adhering to the rack stopper. Thus, the shock absorbing member is adhered to the rack stopper before the ball housing adheres to the rack stopper. Therefore, the shock noise between the rack stopper and the inner ball joint is reduced.

Description

차량용 조향장치의 이너볼조인트{INNER BALL JOINT OF STEERING DEVICE FOR VEHICLE}INNER BALL JOINT OF STEERING DEVICE FOR VEHICLE}

본 발명은 차량용 조향장치의 이너볼조인트에 관한 것으로, 더욱 상세하게는 랙하우징의 양단에 설치된 랙스톱퍼와, 랙바와 연결된 이너볼조인트가 밀착되어 발생되는 충격음을 방지할 수 있도록 그 사이에 완충부재를 마련한 차량용 조향장치의 이너볼조인트에 관한 것이다.The present invention relates to an inner ball joint of a steering device for a vehicle, and more particularly, a rack stopper installed at both ends of a rack housing and an inner ball joint connected to a rack bar to prevent a shock sound generated by close contact with a buffer member therebetween. It relates to an inner ball joint of a vehicle steering apparatus provided with.

일반적으로 차량용 조향장치는 조향휠에서 발생되는 회전력을 조향륜에 전달할 수 있도록 그 사이에 마련되는 것으로서, 조향휠에 연결되는 조향축과, 이 조향축에 연결된 기어박스, 그리고 기어박스의 양측에 이너볼조인트로서 연결된 타이로드 등을 구비하여 마련된다.In general, a vehicle steering device is provided between the steering wheels so as to transmit the rotational force generated from the steering wheels to the steering wheels. It is provided with a tie rod or the like connected as a ball joint.

도 1은 이러한 기어박스에 이너볼조인트가 연결된 상태를 보인 부분단면도이다. 이에 도시된 바와 같이, 좌,우측으로 길게 중공으로 마련되어 내부에 랙바(3)가 설치되고 중간 일측에는 랙바(3)와 교차하는 방향으로 로터리밸브(2)가 설치된 랙하우징(1)이 마련된다.1 is a partial cross-sectional view showing a state in which the inner ball joint is connected to the gearbox. As shown in the figure, the rack bar 3 is provided in a long hollow to the left and right sides, and a rack housing 1 in which a rotary valve 2 is installed in a direction intersecting the rack bar 3 is provided at one side of the middle. .

이 랙하우징(1)의 내부에 설치되는 랙바(3)는 금속의 원봉으로서 미도시된 중간 일측에 랙이 형성되고, 중간 타측에는 피스톤(3a)이 마련되어 로터리밸브(2)의 중심측에 마련된 피니언과 랙이 치합되어 동력을 전달받음과 동시에 로터리밸브(2)에서 공급되는 유압으로 인해 좌,우측으로 동작된다.The rack bar 3 installed inside the rack housing 1 has a rack formed on one side of the middle not shown as a round rod of metal, and a piston 3a is provided on the other side of the rack housing 3, which is provided at the center side of the rotary valve 2. The pinion and the rack are engaged with each other to receive power and are operated left and right due to the hydraulic pressure supplied from the rotary valve 2.

한편, 랙하우징(1)의 개구된 양단에는 랙바(3)를 지지할 수 있도록 외주면은 랙하우징(1)에 밀착되고 내주면은 랙바(3)에 밀착되는 랙부시(4)와, 이 랙부시(4)의 외측으로 마련되어 랙바(3)의 이동을 제한할 수 있도록 중공의 랙스톱퍼(5)가 마련된다.On the other hand, the rack bush (4) in which the outer peripheral surface is in close contact with the rack housing (1) and the inner circumferential surface is in close contact with the rack bar (3) so that the open ends of the rack housing (1) can support the rack bar (3), and this rack bush A hollow rack stopper (5) is provided outside the (4) to limit the movement of the rack bar (3).

또한, 랙하우징(1)의 외부 양측으로 연장되는 랙바(3)의 양측 선단에는 타이로드(6)가 연결 설치되는데, 이때 타이로드(6)와 랙바(3)는 이너볼조인트(7)로서 연결된다.In addition, tie rods 6 are connected to both ends of the rack bar 3 extending to the outer both sides of the rack housing 1, wherein the tie rods 6 and the rack bar 3 are inner ball joints 7. Connected.

즉, 이너볼조인트(7)는 랙바(3)의 양측 선단에 결합되며 일측이 개구된 볼하우징(7a)과, 이에 대응되도록 양측에 마련된 타이로드(6)의 일단에 형성되어 볼하우징(7a)의 내부에 삽입 결합되는 볼부(7b)로서 이루어진다.That is, the inner ball joint 7 is coupled to both front ends of the rack bar 3 and has a ball housing 7a open at one side thereof, and is formed at one end of the tie rod 6 provided at both sides so as to correspond to the ball housing 7a. It is made as a ball portion 7b that is inserted into the inside of.

이때 볼하우징(7a)은 랙스톱퍼(5)의 내부면 지름에 비해 크게 마련됨으로 랙바(3)가 좌,우측으로 동작될 때 랙스톱퍼(5)의 외부측에서 이와 함께 연동되고 최대한 일측으로 이동되었을 때에는 랙스톱퍼(5)의 축방향 외부면과 밀착되어 랙바(3)의 이동을 제한하게 된다.At this time, the ball housing 7a is larger than the inner diameter of the rack stopper 5, so that when the rack bar 3 is operated left and right, the ball housing 7a is interlocked with and moved to one side as much as possible. When in contact with the axial outer surface of the rack stopper (5) to limit the movement of the rack bar (3).

그러나, 이와 같이 구성된 종래의 차량용 조향장치의 이너볼조인트는 조향장치의 잠금동작시 이너볼조인트의 볼하우징과 랙스톱퍼가 부딪혀서 충격음을 발생시키게 되므로, 운전자에게 불안감을 주고 되고, 더 나아가 차량의 신뢰성까지 저하시키게되는 문제점으로 작용하게 되었다.However, the inner ball joint of the conventional steering device for a vehicle configured as described above generates an impact sound by colliding with the ball housing of the inner ball joint and the rack stopper when the steering device is locked, thereby giving anxiety to the driver, and furthermore, reliability of the vehicle. It has been a problem that is lowered until.

본 발명은 이와 같은 종래의 문제점을 해결하기 위한 것으로서, 본 발명의 목적은 랙하우징의 양단에 설치된 랙스톱퍼와, 랙바와 연결된 이너볼조인트 사이의 충격음을 방지할 수 있도록 이너볼조인트의 일측에 완충부재를 마련한 차량용 조향장치의 이너볼조인트를 제공하는 것이다.The present invention is to solve such a conventional problem, an object of the present invention is to buffer on one side of the inner ball joint to prevent the impact sound between the rack stopper installed on both ends of the rack housing, and the inner ball joint connected to the rack bar An inner ball joint of a vehicle steering apparatus provided with a member is provided.

도 1은 종래의 이너볼조인트의 설치상태를 보인 부분단면도이다.1 is a partial cross-sectional view showing an installation state of a conventional inner ball joint.

도 2는 본 발명에 따른 이너볼조인트의 설치상태를 보인 부분단면도이다.Figure 2 is a partial cross-sectional view showing an installation state of the inner ball joint according to the present invention.

도 3은 본 발명에 따른 이너볼조인트를 확대도시한 도면이다.3 is an enlarged view illustrating an inner ball joint according to the present invention.

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

10 : 랙하우징 30 : 랙바10: rack housing 30: rack bar

50 : 랙스톱퍼 60 : 타이로드50: rack stopper 60: tie rod

70 : 이너볼조인트 80 : 볼하우징70: inner ball joint 80: ball housing

90 : 볼부 100 : 완충부재90: ball portion 100: buffer member

101: 설치홈101: mounting groove

이와 같은 목적을 달성하기 위한 본 발명 차량용 조향장치의 이너볼조인트는, 중공으로 마련된 랙하우징의 내부에 축방향으로 이동 가능하게 설치되되 양단은 상기 랙하우징의 외부로 연장된 랙바, 내부면은 상기 랙바의 외부면과 상기 랙하우징의 양단측 내부면 사이에 마련된 랙스톱퍼, 상기 랙바의 양단에 결합되며 일측이 개구형성된 볼하우징과 이 볼하우징의 내부에 삽입 결합되는 볼부로 이루어진 이너볼조인트를 구비하는 차량용 조향장치에 있어서, 상기 랙스톱퍼와 이너볼조인트가 밀착되어 발생되는 충격음을 저감시킬 수 있도록 상기 랙스톱퍼와 이너볼조인트의 사이에는 완충부재가 마련된 것을 특징으로 한다.The inner ball joint of the steering device for a vehicle of the present invention for achieving the above object is installed to be movable in the axial direction inside the rack housing provided in a hollow, both ends of the rack bar extending to the outside of the rack housing, the inner surface is A rack stopper provided between an outer surface of the rack bar and an inner surface of both ends of the rack housing, an inner ball joint consisting of a ball housing coupled to both ends of the rack bar and having an opening formed at one side thereof and a ball portion inserted into the ball housing. In the vehicle steering apparatus, a shock absorbing member is provided between the rack stopper and the inner ball joint to reduce the impact sound generated by the rack stopper and the inner ball joint in close contact.

이하에서는 첨부한 도면을 참조하여 본 발명에 따른 차량용 조향장치의 이너볼조인트의 바람직한 일실시예를 상세히 설명한다.Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the inner ball joint of the vehicle steering apparatus according to the present invention.

도 2는 본 발명에 따른 이너볼조인트의 설치상태를 보인 부분단면도이다. 이에 도시된 바와 같이, 좌,우측으로 길게 중공으로 마련되어 내부에 랙바(30)가 설치되고 중간 일측에는 랙바(30)와 교차하는 방향으로 로터리밸브(20)가 설치된 랙하우징(10)이 마련된다.Figure 2 is a partial cross-sectional view showing an installation state of the inner ball joint according to the present invention. As shown in the figure, the rack bar 30 is provided in the hollow to the left, the right side is installed inside the rack housing 10 is provided with a rotary valve 20 in the direction intersecting the rack bar 30 on one side of the middle. .

이 랙하우징(10)의 내부에 설치되는 랙바(30)는 금속의 원봉으로서 미도시된 중간 일측에 랙이 형성되고, 중간 타측에는 피스톤(31)이 마련되어 로터리밸브(20)의 중심측에 마련된 피니언과 랙이 치합되어 동력을 전달받음과 동시에 로터리밸브(20)에서 공급되는 유압으로 인해 좌,우측으로 동작된다.The rack bar 30 installed inside the rack housing 10 has a rack formed on one side of the middle, not shown, as a circular rod of metal, and a piston 31 is provided on the other side of the rack housing, which is provided on the center side of the rotary valve 20. The pinion and the rack are engaged with each other to receive power and operate left and right due to the hydraulic pressure supplied from the rotary valve 20.

한편, 랙하우징(10)의 개구된 양단에는 랙바(30)를 지지할 수 있도록 외주면은 랙하우징(10)에 밀착되고 내주면은 랙바(30)에 밀착되는 랙부시(40)와, 이 랙부시(40)의 외측으로 마련되어 랙바(30)의 이동을 제한할 수 있도록 중공의 랙스톱퍼(50)가 마련된다.On the other hand, the outer circumferential surface is in close contact with the rack housing 10 and the inner circumferential surface is in close contact with the rack bar 30 so as to support the rack bar 30 at both open ends of the rack housing 10, and the rack bush A hollow rack stopper 50 is provided outside the 40 to limit the movement of the rack bar 30.

또한, 랙하우징(10)의 외부 양측으로 연장되는 랙바(30)의 양측 선단에는 타이로드(60)가 연결 설치되는데, 이때 타이로드(60)와 랙바(30)는 이너볼조인트(70)로서 연결된다.In addition, tie rods 60 are installed at both ends of the rack bar 30 extending to both outer sides of the rack housing 10, wherein the tie rod 60 and the rack bar 30 are inner ball joints 70. Connected.

도 3에 도시된 바와 같이, 이너볼조인트(70)는 랙바(30)의 양측 선단 내부에 삽입되어 이에 나사 결합될 수 있도록 일측 외주면에 나사부(81)가 형성되고 타측은 개구형성된 입구부(82)가 형성된 볼하우징(80)과, 차량의 조향륜과 연결되는 타이로드(60)의 일단에 형성되어 이 볼하우징(80)의 내부에 삽입 결합되는 볼부(90)로서 이루어진다.As shown in FIG. 3, the inner ball joint 70 has a threaded portion 81 formed at one outer circumferential surface thereof so that the inner ball joint 70 may be inserted into both ends of the rack bar 30 and screwed thereto, and the inlet portion 82 having the other side may be opened. Is formed on one end of the tie rod 60 connected to the steering wheel of the vehicle and the ball housing 80 is inserted into the ball housing 80 is inserted into the ball housing (80).

이때 볼하우징(80)은 랙스톱퍼(50)의 내부면 지름에 비해 크게 마련됨으로 랙바(30)가 좌,우측으로 동작될 때 랙스톱퍼(50)의 외부측에서 이와 함께 연동되고 최대한 일측으로 이동되었을 때에는 랙스톱퍼(50)의 축방향 외부면과 밀착되어 랙바(30)의 이동을 제한하게 된다.At this time, the ball housing 80 is provided with a larger than the diameter of the inner surface of the rack stopper 50, when the rack bar 30 is operated to the left and right, interlocked with it from the outside of the rack stopper 50 and moved to one side as much as possible. When in contact with the axial outer surface of the rack stopper 50 is to limit the movement of the rack bar (30).

특히, 본 발명에서는 랙스톱퍼(50)와 이너볼조인트(70)의 볼하우징(80)이 밀착되어 발생되는 충격음을 저감시킬 수 있도록 그 사이에 완충부재(100)가 마련된다.In particular, in the present invention, the shock absorbing member 100 is provided between the rack stopper 50 and the ball housing 80 of the inner ball joint 70 so as to reduce the impact sound generated.

이 완충부재(100)는 양측에 형성되는 랙스톱퍼(50)와 이너볼조인트(70)사이 공간에, 좌,우 구분없이 모두 사용할 수 있도록, 서로 동일한 형상으로 마련된 이너볼조인트(70)에 설치되는 것으로서, 그 재질은 금속재에 비해 연성재질인 플라스틱재 등으로 마련된다.The shock absorbing member 100 is installed in the inner ball joint 70 provided in the same shape with each other so that the space between the rack stopper 50 and the inner ball joint 70 formed on both sides can be used without any distinction between left and right. As the material, the material is provided with a plastic material, such as a soft material compared to the metal material.

즉, 이 완충부재(100)는 랙스톱퍼(50)와 축방향으로 직접 밀착되는 볼하우징(80)의 나사부(81) 외측에 환형으로 마련되어, 랙하우징(80)이랙스톱퍼(50)와 밀착되기 전에 먼저 밀착될 수 있도록 형성된다.That is, the buffer member 100 is provided in an annular shape on the outer side of the screw portion 81 of the ball housing 80 in direct contact with the rack stopper 50 in the axial direction, so that the rack housing 80 is in close contact with the rack stopper 50. Before it is formed to be in close contact.

또, 이 완충부재(100)의 고정을 위해 랙스톱퍼(50)와 마주하는 볼하우징(80)의 입구부(82) 반대측에는 완충부재(100)가 삽입되어 일부 돌출될 수 있도록 환형의 설치홈(101)이 형성된다.In addition, in order to fix the shock absorbing member 100, an annular installation groove is formed so that the shock absorbing member 100 is inserted into and protrudes from the side opposite to the inlet portion 82 of the ball housing 80 facing the rack stopper 50. 101 is formed.

이와 같이 구성된 본 발명의 차량용 조향장치의 이너볼조인트는, 랙바(30)와 이너볼조인트(70)의 볼하우징(80)을 나사결합하기 전에 볼하우징(80)의 나사부(81)측 외측에 형성된 설치홈(101)에 완충부재(100)를 삽입 설치한다.The inner ball joint of the vehicle steering apparatus of the present invention configured as described above is provided on the outer side of the threaded portion 81 of the ball housing 80 before screwing the ball housing 80 of the rack bar 30 and the inner ball joint 70. Insert the buffer member 100 into the installation groove 101 formed.

그리고 이러한 상태에서 랙바(30)와 볼하우징(80)을 나사 결합한 후, 볼하우징(80)의 입구부(82) 내측으로는 볼부(90)를 삽입시키고 그 외부측으로 가압하여 이들을 결합시키게 됨으로써 이너볼조인트(70)를 통해 랙바(30)와 타이로드(60)가 연결 설치되는 것이다.In this state, after screwing the rack bar 30 and the ball housing 80, the ball portion 90 is inserted into the inlet portion 82 of the ball housing 80, and the inner side by pressing them to the outside to couple them to the inner The rack bar 30 and the tie rod 60 are connected and installed through the ball joint 70.

이상에서 상세히 설명한 바와 같이, 본 발명에 따른 차량용 조향장치의 이너볼조인트는, 동일한 형상으로 마련되어 랙바의 양측에 결합되는 이너볼조인트의 볼하우징 외부에 완충부재를 설치됨으로써, 완충부재를 좌,우 구분없이 사용할 수 있고, 단순한 구조의 완충부재로 인해 랙스톱퍼와 이너볼조인트 사이의 충격음을 저감시킬 수 있어 운전자가 느끼는 불안감을 해소할 수 있고, 차량의 신뢰성을 향상시키는 이점이 있다.As described in detail above, the inner ball joint of the steering apparatus for a vehicle according to the present invention is provided in the same shape, the cushioning member is installed on the outside of the ball housing of the inner ball joint coupled to both sides of the rack bar, the buffer member left, right It can be used without any distinction, and the shock absorbing member between the rack stopper and the inner ball joint can be reduced due to the simple structure of the shock absorbing member, which can solve the anxiety felt by the driver and improve the reliability of the vehicle.

Claims (3)

중공으로 마련된 랙하우징의 내부에 축방향으로 이동 가능하게 설치되되 양단은 상기 랙하우징의 외부로 연장된 랙바, 내부면은 상기 랙바의 외부면과 상기 랙하우징의 양단측 내부면 사이에 마련된 랙스톱퍼, 상기 랙바의 양단에 결합되며 일측이 개구형성된 볼하우징과 이 볼하우징의 내부에 삽입 결합되는 볼부로 이루어진 이너볼조인트를 구비하는 차량용 조향장치에 있어서,The rack stopper is installed to be movable in the axial direction inside the rack housing provided in a hollow, both ends of the rack bar extending to the outside of the rack housing, the inner surface is a rack stopper provided between the outer surface of the rack bar and the inner surface of both ends of the rack housing In the steering device for a vehicle having an inner ball joint consisting of a ball housing coupled to both ends of the rack bar and one side is formed in the opening and the ball portion inserted into the ball housing, 상기 랙스톱퍼(50)와 이너볼조인트(70)가 밀착되어 발생되는 충격음을 저감시킬 수 있도록 상기 랙스톱퍼(50)와 이너볼조인트(70)의 사이에는 완충부재(100)가 마련된 것을 특징으로 하는 차량용 조향장치의 이너볼조인트.The shock absorbing member 100 is provided between the rack stopper 50 and the inner ball joint 70 to reduce the impact sound generated by the rack stopper 50 and the inner ball joint 70 in close contact. Inner ball joint of steering device for vehicle. 제 1항에 있어서,The method of claim 1, 상기 완충부재(100)는 상기 랙스톱퍼(50)와 마주하는 상기 볼하우징(80)의 일측면에 환형으로 형성되어 돌출되도록 설치된 것을 특징으로 하는 차량용 조향장치의 이너볼조인트.The buffer member 100 is an inner ball joint of the steering device for a vehicle, characterized in that formed to protrude in an annular shape on one side of the ball housing (80) facing the rack stopper (50). 제 2항에 있어서,The method of claim 2, 상기 완충부재(100)를 고정시킬 수 있도록 상기 볼하우징(80)의 일측면에는 환형으로 형성된 설치홈(101)이 마련된 것을 특징으로 하는 차량용 조향장치의 이너볼조인트.Inner ball joint of the steering device for a vehicle, characterized in that the installation groove 101 formed in an annular shape is provided on one side of the ball housing (80) to fix the buffer member (100).
KR1020010026621A 2001-05-16 2001-05-16 Inner ball joint of steering device for vehicle KR20020087694A (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6268872U (en) * 1985-10-22 1987-04-30
JPH04127073U (en) * 1991-05-13 1992-11-19 自動車機器株式会社 steering linkage
KR970041068U (en) * 1995-12-19 1997-07-29 Oil drain prevention structure of cylinder
KR19980049823U (en) * 1996-12-30 1998-10-07 오상수 Rack Bars of Automotive Steering Hydraulic Cylinders

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6268872U (en) * 1985-10-22 1987-04-30
JPH04127073U (en) * 1991-05-13 1992-11-19 自動車機器株式会社 steering linkage
KR970041068U (en) * 1995-12-19 1997-07-29 Oil drain prevention structure of cylinder
KR19980049823U (en) * 1996-12-30 1998-10-07 오상수 Rack Bars of Automotive Steering Hydraulic Cylinders

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