KR20020054088A - Ball joint of steering device for vehicle - Google Patents

Ball joint of steering device for vehicle Download PDF

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Publication number
KR20020054088A
KR20020054088A KR1020000082725A KR20000082725A KR20020054088A KR 20020054088 A KR20020054088 A KR 20020054088A KR 1020000082725 A KR1020000082725 A KR 1020000082725A KR 20000082725 A KR20000082725 A KR 20000082725A KR 20020054088 A KR20020054088 A KR 20020054088A
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KR
South Korea
Prior art keywords
screw portion
female screw
screw part
ball joint
rack bar
Prior art date
Application number
KR1020000082725A
Other languages
Korean (ko)
Inventor
유영선
Original Assignee
밍 루
주식회사 만도
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Publication date
Application filed by 밍 루, 주식회사 만도 filed Critical 밍 루
Priority to KR1020000082725A priority Critical patent/KR20020054088A/en
Publication of KR20020054088A publication Critical patent/KR20020054088A/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D7/00—Steering linkage; Stub axles or their mountings
    • B62D7/16—Arrangement of linkage connections
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C11/00—Pivots; Pivotal connections
    • F16C11/04—Pivotal connections
    • F16C11/06—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2304/00—Optimising design; Manufacturing; Testing
    • B60Y2304/07—Facilitating assembling or mounting

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

Abstract

PURPOSE: A ball joint of a steering device for a car is provided to reduce a manufacturing cost by firmly coupling a female screw part formed on a rack bar and a male screw part formed on a ball housing without using any member. CONSTITUTION: A ball joint of a steering device for a car includes a female screw part(20), a male screw part(80), and a transformation area(90). The female screw part has inlets formed in the inside of both ends of a rack bar. The male screw part is formed at a side of a ball housing part to be coupled with the female screw part. The female screw part has teeth formed at a predetermined axial distances. The transformation area is formed at a part of the male screw part, and has an axial distance narrower than that of the teeth of the female screw part to transform the teeth of the female screw part.

Description

차량용 조향장치의 볼조인트 {BALL JOINT OF STEERING DEVICE FOR VEHICLE}BALL JOINT OF STEERING DEVICE FOR VEHICLE}

본 발명은 차량용 조향장치의 볼조인트에 관한 것으로, 더욱 상세하게는 랙바와 타이로드 사이에 마련된 볼조인트의 결합구조를 단순화하여 부품수의 감소로 인한 원가절감 및 생산성향상을 이루는 차량용 조향장치의 볼조인트에 관한 것이다.The present invention relates to a ball joint of a vehicle steering apparatus, and more particularly, to simplify the coupling structure of the ball joint provided between the rack bar and the tie rod, the ball of the vehicle steering apparatus to achieve cost reduction and productivity due to the reduction of the number of parts. It's about the joint.

일반적으로 차량용 조향장치는 조향휠에서 발생되는 회전력을 조향륜에 전달할 수 있도록 운전석에 설치되는 조향축과 이에 교차하도록 연결되는 랙바와, 이 랙바와 조향륜 사이에 설치되는 타이로드를 구비하여 마련된다.In general, a vehicle steering device is provided with a steering shaft installed in the driver's seat and a rack bar connected to the steering wheel so as to transmit the rotational force generated from the steering wheel to the steering wheel, and a tie rod installed between the rack bar and the steering wheel. .

도 1은 이러한 조향장치의 랙바와 타이로드 사이에 설치된 볼조인트를 보인 단면도이다. 이에 도시된 바와 같이, 랙바(1)는 금속의 원봉으로서 미도시된 중간측에 랙이 형성되어 이를 통해 전달되는 힘에 의해 축방향으로 이동된다. 그리고 이 랙바(1)의 양측 선단 내부에 원형의 홈이 형성되고, 이 홈의 내부면에는 탭가공이 되어 암나사부(2)가 형성된다.1 is a cross-sectional view showing a ball joint installed between the rack bar and the tie rod of the steering device. As shown therein, the rack bar 1 is formed in a rack on the intermediate side, not shown as a round rod of metal, and is moved in the axial direction by the force transmitted therethrough. Circular grooves are formed in both ends of the rack bar 1, and the inner surface of the grooves is tabbed to form the female screw portion 2.

한편, 랙바(1)에는 타이로드(4)가 연결 설치되는데, 이를 위해 랙바(1)와 타이로드(4)의 사이에는 볼조인트(5)가 마련된다.On the other hand, the tie bar (4) is installed in the rack bar (1), the ball joint (5) is provided between the rack bar (1) and the tie rod (4).

이 볼조인트(5)는 타이로드(4)의 일단에 연결 형성되는 볼부(6)와, 랙바(1)와 연결되며 일측의 내부에는 볼부(6)가 그 내부에 삽입되는 볼하우징부(7)부로 이루어진다.The ball joint 5 is connected to the ball portion 6 formed at one end of the tie rod 4, and the rack bar 1, the ball housing portion 7 is inserted into the ball portion 6 inside the one side It consists of parts.

이때, 볼하우징부(7)부의 일단에는 랙바(1)에 형성된 암나사부(2)와 결합될 수 있도록 외주면에 수나사부(8)가 마련된다.At this time, one end of the ball housing portion 7 is provided with a male screw portion 8 on the outer circumferential surface to be coupled to the female screw portion 2 formed in the rack bar (1).

또한, 암나사부(2)의 외주면과 이에 마주하는 볼하우징부(7)부의 일측면 사이에는 이들의 결합을 견고히 해줄 수 있도록 탭와셔(9)가 삽입 설치된다.In addition, a tab washer 9 is inserted between the outer circumferential surface of the female screw portion 2 and one side of the ball housing portion 7 facing the female screw portion 2 so as to secure the coupling thereof.

이 탭와셔(9)는 중공의 원판으로 마련되는데, 그 내부는 일측으로 절곡되어 암나사부(2)의 외주면에 형성된 고정홈(3)에 삽입된다. 그리고 외주측은 이에 마주하는 볼하우징부(7)의 후측면을 감쌀 수 있도록 절곡된다.The tab washer 9 is provided with a hollow disc, the inside of which is bent to one side and inserted into the fixing groove 3 formed on the outer circumferential surface of the female screw portion 2. And the outer circumferential side is bent to wrap the rear side of the ball housing 7 facing it.

그러나, 이와 같이 구성된 종래의 차량용 조향장치의 볼조인트는, 랙바와 볼하우징부를 견고히 결합시키기 위해 암나사부와 수나사부의 사이에 탭와셔를 설치하게되는데, 이러한 탭와셔의 사용으로 인해 부품의 제조 및 조립이 복잡해져, 결국 생산비용이 증대되는 문제점이 있었다.However, the ball joint of the conventional vehicle steering apparatus configured as described above installs a tab washer between the female threaded portion and the male threaded portion to securely couple the rack bar and the ball housing portion. There is a problem that the assembly is complicated, the production cost is increased in the end.

본 발명은 이와 같은 종래의 문제점을 해결하기 위한 것으로서, 본 발명의 목적은 랙바와 형성된 암나사부와 볼하우징부에 설치되는 수나사부가 별도의 부재 없이 견고히 체결되도록 그 구조를 개선하여, 부품의 감소로 인한 제조 및 조립이 용이해지고, 생산비용이 감소되는 차량용 조향장치의 볼조인트를 제공하는 것이다.The present invention is to solve such a conventional problem, an object of the present invention is to improve the structure so that the female screw portion installed in the rack bar and the female screw portion formed in the ball housing portion and securely fastened without a separate member, to reduce the parts It is to provide a ball joint of the steering device for a vehicle which is easy to manufacture and assembly, and the production cost is reduced.

도 1은 종래 차량용 조향장치의 볼조인트를 보인 단면도이다.1 is a cross-sectional view showing a ball joint of a conventional vehicle steering apparatus.

도 2는 본 발명에 따른 차량용 조향장치의 볼조인트를 보인 분리단면도이다.Figure 2 is an exploded cross-sectional view showing a ball joint of the vehicle steering apparatus according to the present invention.

도 3은 본 발명에 따른 차량용 조향장치의 볼조인트를 보인 결합단면도이다.3 is a cross-sectional view showing a ball joint of the vehicle steering apparatus according to the present invention.

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

10:랙바20:암나사부10: rack bar 20: female thread

30:입구40:타이로드30: entrance 40: tie rod

50:볼조인트60:볼부50: ball joint 60: ball part

70:볼하우징부80:수나사부70: ball housing 80: male thread

90:변형구간90: deformation section

이와 같은 목적을 달성하기 위한 본 발명 차량용 조향장치의 볼조인트는, 랙바의 양단 내부에 축방향 외측으로 입구가 형성된 암나사부와, 상기 암나사부에 체결될 수 있도록 일측에 수나사부가 형성된 볼하우징부를 구비하는 차량용 조향장치에 있어서, 상기 암나사부의 치는 일정한 축방향 거리로 마련되고, 상기 수나사부의 일부는 상기 암나사부의 치에 의해 변형 가능하도록 상기 암나사부의 치의 축방향 거리에 비해 좁은 축방향 거리를 가지는 변형구간으로 마련된 것을 특징으로 한다.The ball joint of the vehicle steering apparatus according to the present invention for achieving the above object is provided with a female screw portion having an inlet formed in both ends of the rack bar in an axially outer side, and a ball housing portion having a male screw portion at one side to be fastened to the female screw portion. In the vehicle steering apparatus, the teeth of the female threaded portion is provided with a constant axial distance, the deformation of the male threaded portion having a narrow axial distance relative to the axial distance of the teeth of the female threaded portion so as to be deformable by the teeth of the female threaded portion. Characterized in that provided as a section.

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

도 2는 본 발명에 따른 차량용 조향장치의 볼조인트를 보인 분리단면도이고,도 3은 본 발명에 따른 차량용 조향장치의 볼조인트를 보인 결합단면도이다. 이에 도시된 바와 같이, 차량의 운전석에 마련된 조향휠의 동작에 의해 조향축과 함께 연동될 수 있도록 랙바(10)가 마련된다.Figure 2 is an exploded cross-sectional view showing a ball joint of the vehicle steering apparatus according to the present invention, Figure 3 is a combined cross-sectional view showing a ball joint of the vehicle steering apparatus according to the present invention. As shown in the drawing, the rack bar 10 is provided to be linked with the steering shaft by the operation of the steering wheel provided in the driver's seat of the vehicle.

이 랙바(10)는 금속의 원봉으로서 미도시된 중간측에 랙이 형성되어 이를 통해 조향축에서 전달되는 힘에 의해 축방향으로 이동 가능하게 설치된다.The rack bar 10 is a circular rod of metal is formed in the rack is not shown in the middle side is installed so as to be movable in the axial direction by the force transmitted from the steering shaft.

그리고 이 랙바(10)의 양측 선단 내부에는 축방향으로 형성된 원형의 홈이 마련되고, 이 홈의 내부면에는 탭가공된 암나사부(20)가 형성된다.And both ends of the rack bar 10 is provided with a circular groove formed in the axial direction, the inner surface of the groove is formed with a tabbed female threaded portion (20).

또, 랙바(10)에는 타이로드(40)가 연결 설치되는데, 이 타이로드(40)의 끝단에는 조향륜이 연결된다. 즉, 조향륜은 운전자가 조향휠을 동작시킴에 따라 조향축과 랙바(10)와 타이로드(40)에 의해 동력이 전달되어 구동되는 것이다.In addition, the tie bar 40 is installed in the rack bar 10, the steering wheel is connected to the end of the tie rod 40. That is, the steering wheel is driven by the transmission of power by the steering shaft, the rack bar 10 and the tie rod 40 as the driver operates the steering wheel.

한편, 랙바(10)와 타이로드(40)의 사이에는 이들을 연결시켜 동력을 전달시켜줄 수 있도록 볼조인트(50)가 설치된다.Meanwhile, a ball joint 50 is installed between the rack bar 10 and the tie rod 40 so as to connect them and transmit power.

이 볼조인트(50)는, 타이로드(40)와 일체로 마련되는 볼부(60)와, 이 볼부(60)가 내부에 삽입되며 랙바(10)와 연결되는 볼하우징부(70)로 이루어진다.The ball joint 50 includes a ball part 60 which is provided integrally with the tie rod 40, and a ball housing part 70 into which the ball part 60 is inserted and connected to the rack bar 10.

또한, 볼하우징부(70)의 후방측에는 랙바(10)에 형성된 암나사부(20)에 삽입될 수 있도록 외주면에 수나사부(80)가 마련된다.In addition, the male screw portion 80 is provided on the outer circumferential surface of the ball housing portion 70 so as to be inserted into the female screw portion 20 formed in the rack bar 10.

이 수나사부(80)는 각각의 치가 축방향으로 일정한 거리로 형성되어있는 암나사부(20)와는 달리 일부구간 치의 축방향거리가 좁게 형성된다.Unlike the female screw portion 20 in which each tooth is formed at a constant distance in the axial direction, the male screw portion 80 is formed to have a narrow axial distance of the partial section teeth.

즉, 본 발명에서는 별도의 부재 없이 암나사부(20)와 수나사부(80)의 견고한 결합을 위해 암나사부(20)의 내부에 수나사부(80)가 삽입되어 체결될 때수나사부(80)의 일부구간이 변형됨으로써 암나사부(20)에 견고히 고정되도록 하는 것이다.That is, in the present invention, when the male screw portion 80 is inserted into the female screw portion 20 to be firmly coupled to the female screw portion 20 and the male screw portion 80 without a separate member, a part of the male screw portion 80 is engaged. The section is deformed to be firmly fixed to the female screw portion 20.

이때, 암나사부(20) 치 사이의 축방향 거리에 비해 좁게 마련되어 변형되는 수나사부(80)의 변형구간(90)은 암나사부(20)의 개구된 입구(30)와 대응되는 위치에 마련되는 것이 바람직하다.At this time, the deformation section 90 of the male screw portion 80 that is narrower than the axial distance between the teeth of the female screw portion 20 is provided at a position corresponding to the opened inlet 30 of the female screw portion 20. It is preferable.

즉, 암나사부(20)의 내부로 진입되는 측은 암나사부(20)의 치에 대응되도록 마련되어 그 내부로 큰 저항 없이 삽입되고, 이어서 삽입되는 수나사부(80)의 변형구간(90)이 암나사부(20)에 비해 단면적이 작으므로 이에 의해 뭉개져 변형되면서 암나사부(20)와 수나사부(80)를 견고히 결합시키게되는 것이다.That is, the side entering the female screw portion 20 is provided so as to correspond to the teeth of the female screw portion 20 is inserted without a large resistance therein, the deformation section 90 of the male screw portion 80 is inserted into the female screw portion Since the cross-sectional area is smaller than that of (20), the female screw portion 20 and the male screw portion 80 are firmly coupled while being crushed and deformed.

아울러, 수나사부(80)를 암나사부(20)에 비해 약한 재질의 금속으로 마련하면 이들의 체결시 암나사부(20)에 의해 수나사부(80)의 변형구간(90)이 보다 쉽게 변형되므로, 체결공정시의 가압력을 낮출 수 있다.In addition, when the male screw portion 80 is made of a metal having a weaker material than the female screw portion 20, the deformation section 90 of the male screw portion 80 is more easily deformed by the female screw portion 20 during the fastening thereof. The pressing force during the fastening process can be reduced.

이와 같이 구성된 본 발명의 차량용 조향장치의 볼조인트는, 랙바(10)의 암나사부(20)에 수나사부(80)를 삽입한 후 이를 회전시키게 된다. 이때 수나사부(80)의 선단부가 암나사부(20)의 내부로 진입되고 그 이후의 얼마간의 구간은 일반적인 토오크로서 수나사부(80)를 회전시키고, 수나사부(80)의 변형구간(90)이 암나사부(20)의 입구(30)와 마주하게되었을 때는 토오크를 상승시켜 수나사부(80)를 억지 회전시키게 된다.The ball joint of the vehicle steering apparatus of the present invention configured as described above is rotated after inserting the male screw portion 80 into the female screw portion 20 of the rack bar 10. At this time, the distal end of the male screw portion 80 enters the inside of the female screw portion 20, and some sections thereafter rotate the male screw portion 80 as a general torque, and the deformation section 90 of the male screw portion 80 is When facing the inlet 30 of the female screw portion 20, the torque is raised to forcibly rotate the male screw portion 80.

이로써 암나사부(20)에 비해 단면적이 작은 수나사부(80)의 변형구간(90)은 암나사부(20)에 의해 변형되어 암나사부(20)의 치 사이에 밀착되므로수나사부(80)와 암나사부(20) 그리고 이에 연결된 랙바(10)와 볼조인트(50)의 볼하우징부(70)는 견고히 결합되는 것이다.As a result, the deformation section 90 of the male threaded portion 80 having a smaller cross-sectional area than the female threaded portion 20 is deformed by the female threaded portion 20 to be in close contact with the teeth of the female threaded portion 20, thereby allowing the male threaded portion 80 and the female thread to fall. The part 20 and the rack bar 10 connected thereto and the ball housing part 70 of the ball joint 50 are firmly coupled to each other.

이상에서 상세히 설명한 바와 같이, 본 발명에 따른 차량용 조향장치의 볼조인트는, 암나사부의 입구에 대응되는 수나사부의 변형구간이 암나사부와의 단면적 차이에 의해 변형되어 그 내부에 밀착 고정되는 간단한 구조로 마련된다.As described in detail above, the ball joint of the vehicle steering apparatus according to the present invention has a simple structure in which the deformation section of the male screw portion corresponding to the inlet of the female screw portion is deformed by the cross-sectional area of the female screw portion and closely fixed to the inside thereof. Prepared.

이로써 암나사부와 수나사부의 결합을 위한 별도의 부재를 사용치 않게 되어 부품 수를 감소할 수 있으므로, 부품의 제조 및 조립이 용이해지고, 생산비용이 절감되는 이점이 있다.As a result, the number of parts can be reduced by not using a separate member for coupling the female threaded portion and the male threaded portion, thereby facilitating the manufacture and assembly of the components, and reducing the production cost.

Claims (2)

랙바의 양단 내부에 축방향 외측으로 입구가 형성된 암나사부와, 상기 암나사부에 체결될 수 있도록 일측에 수나사부가 형성된 볼하우징부를 구비하는 차량용 조향장치에 있어서,In the steering device for a vehicle having a female screw portion having an inlet formed in both ends of the rack bar axially outward, and a ball housing portion having a male screw portion on one side to be fastened to the female screw portion, 상기 암나사부(20)의 치는 일정한 축방향 거리로 마련되고, 상기 수나사부(80)의 일부는 상기 암나사부(20)의 치에 의해 변형 가능하도록 상기 암나사부(20)의 치의 축방향 거리에 비해 좁은 축방향 거리를 가지는 변형구간(90)으로 마련된 것을 특징으로 하는 차량용 조향장치의 볼조인트.The teeth of the female screw portion 20 are provided at a constant axial distance, and a part of the male screw portion 80 is formed at an axial distance of the teeth of the female screw portion 20 so as to be deformable by the teeth of the female screw portion 20. Ball joint of the steering device for a vehicle, characterized in that provided in the deformation section having a relatively narrow axial distance (90). 제 1항에 있어서,The method of claim 1, 상기 변형구간(90)은 상기 암나사부(20)와 수나사부(80)의 체결시 상기 암나사부(20)의 입구(30) 내측과 맞물리도록 상기 수나사부(80)가 상기 암나사부(20)에 진입되는 방향 후방측에 마련된 것을 특징으로 하는 차량용 조향장치의 볼조인트.The deformation section 90 is the female screw portion 20 so that the male screw portion 80 is engaged with the inside of the inlet 30 of the female screw portion 20 when the female screw portion 20 and the male screw portion 80 are fastened. Ball joint of the steering device for a vehicle, characterized in that provided on the rear side in the direction to enter.
KR1020000082725A 2000-12-27 2000-12-27 Ball joint of steering device for vehicle KR20020054088A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101315590B1 (en) * 2009-12-28 2013-10-08 주식회사 만도 Intermediate Shaft of Steering Apparatus for Vehicle and Steering Apparatus for Vehicle using The Same

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR880001667A (en) * 1986-07-10 1988-04-26 아놀드 자일러, 에른스트 알테르 Bicyclic Thiaza Compounds
JPH09126367A (en) * 1995-10-31 1997-05-13 Kawasaki Steel Corp Pipe joint
KR0110593Y1 (en) * 1994-08-31 1997-12-23 Park Sil Sang Pipe joints

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR880001667A (en) * 1986-07-10 1988-04-26 아놀드 자일러, 에른스트 알테르 Bicyclic Thiaza Compounds
KR0110593Y1 (en) * 1994-08-31 1997-12-23 Park Sil Sang Pipe joints
JPH09126367A (en) * 1995-10-31 1997-05-13 Kawasaki Steel Corp Pipe joint

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101315590B1 (en) * 2009-12-28 2013-10-08 주식회사 만도 Intermediate Shaft of Steering Apparatus for Vehicle and Steering Apparatus for Vehicle using The Same

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