KR20030034603A - Input shaft and torsion bar of power steering for vehicle - Google Patents

Input shaft and torsion bar of power steering for vehicle Download PDF

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Publication number
KR20030034603A
KR20030034603A KR1020010066255A KR20010066255A KR20030034603A KR 20030034603 A KR20030034603 A KR 20030034603A KR 1020010066255 A KR1020010066255 A KR 1020010066255A KR 20010066255 A KR20010066255 A KR 20010066255A KR 20030034603 A KR20030034603 A KR 20030034603A
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KR
South Korea
Prior art keywords
input shaft
torsion bar
power steering
vehicle
caulking
Prior art date
Application number
KR1020010066255A
Other languages
Korean (ko)
Inventor
남궁주
어수홍
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주식회사 만도
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Application filed by 주식회사 만도 filed Critical 주식회사 만도
Priority to KR1020010066255A priority Critical patent/KR20030034603A/en
Publication of KR20030034603A publication Critical patent/KR20030034603A/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D5/00—Power-assisted or power-driven steering
    • B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
    • B62D5/08—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle characterised by type of steering valve used
    • B62D5/083—Rotary valves
    • 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)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Springs (AREA)
  • Power Steering Mechanism (AREA)

Abstract

PURPOSE: An input shaft and a torsion bar for a power steering of a vehicle are provided to reduce process and cost by an uneven part on a tip of the torsion bar and a caulking part on the input shaft. CONSTITUTION: An input shaft(10) and a torsion bar(20) for a power steering of a vehicle have an uneven part(21) and a caulking part(15). The torsion bar is inserted to the input shaft. The uneven part is formed to a tip of the torsion bar circumferentially. The caulking part is arranged to an outer peripheral surface of the input shaft. The uneven part and the caulking part are adhered by facing each other. Therein, rotation and sliding are prevented. Consequently, process for connecting the input shaft and the torsion bar is reduced.

Description

자동차용 파워스티어링의 인풋샤프트와 토션바{INPUT SHAFT AND TORSION BAR OF POWER STEERING FOR VEHICLE}INPUT SHAFT AND TORSION BAR OF POWER STEERING FOR VEHICLE}

본 발명은 자동차용 파워스티어링의 인풋샤프트와 토션바에 관한 것으로, 더욱 상세하게는 로터리밸브의 인풋샤프트와 토션바의 고정방식을 개선함으로써, 공정 단축 및 제조원가 절감을 이루는 자동차용 파워스티어링의 인풋샤프트와 토션바에 관한 것이다.The present invention relates to an input shaft and a torsion bar of a power steering for an automobile, and more particularly, to an input shaft of an automotive power steering that achieves a process shortening and a manufacturing cost by improving an input shaft of a rotary valve and a fixing method of a torsion bar. It's about a torsion bar.

일반적으로 자동차용 파워스티어링은 운전자가 발생시킨 회전력에 따라 유압을 조절하여 배력을 발생시킬 수 있도록 로터리밸브를 구비하는데, 이 로터리밸브의 내부에는 운전자가 발생시킨 회전력을 전달받는 인풋샤프트와, 이 인풋샤프트의 내부에 설치되어 양단간에 비틀림이 발생되는 토션바가 마련된다.In general, power steering for automobiles includes a rotary valve to generate hydraulic power by adjusting the hydraulic pressure according to the rotational force generated by the driver. The rotary valve has an input shaft that receives the rotational force generated by the driver and the input. The torsion bar is installed inside the shaft and is provided with a torsion bar between both ends.

이러한 종래의 인풋샤프트와 토션바는 도 3 및 도 4에 도시된 것과 같이, 인풋샤프트(10)의 축방향 중심에 형성된 관통구멍(11)으로 토션바(20)가 끼워짐과 더불어 인풋샤프트(10)의 단부와 토션바(20)의 단부에 끼워진 고정핀(30)에 의해 고정되어 있다.3 and 4, the conventional input shaft and the torsion bar have a torsion bar 20 fitted into the through hole 11 formed in the axial center of the input shaft 10, and the input shaft ( It is fixed by the fixing pin 30 fitted to the end of 10) and the end of the torsion bar 20.

이때, 토션바(20)는 최초 인풋샤프트(10)의 내부에 회전방향 및 축방향으로 유동가능하게 설치되고, 이후 고정핀(30)에 의해 그 내부에 일단이 고정 설치되는 것이다.At this time, the torsion bar 20 is installed to be movable in the rotational direction and the axial direction inside the first input shaft 10, and then one end is fixedly installed therein by the fixing pin 30.

그러나 이러한 종래의 인풋샤프트(10)와 토션바(20)의 고정구조는, 인풋샤프트(10)와 토션바(20)를 관통하는 센터드릴링과 드릴링 및 리밍작업 후 고정핀(30)을 압입하여 고정하게 되므로, 공구교환 및 작업공수가 많아 제조원가 상승의 원인이 되는 문제점이 있었다.However, the conventional structure of the input shaft 10 and the torsion bar 20 is press-fitting the fixing pin 30 after the center drilling and drilling and reaming operations through the input shaft 10 and the torsion bar 20. Since it is fixed, there is a problem that causes a lot of tool replacement and workmanship, causing a rise in manufacturing costs.

본 발명은 이와 같은 종래의 문제점을 해결하기 위한 것으로서, 그 목적은 인풋샤프트에 끼워지는 토션바의 단부 소정위치에 요철부를 형성하고, 인풋샤프트의 외주면 소정위치에는 요철부에 밀착되도록 가압되는 코킹부를 구비하여 공정 단축 및 제조원가 절감을 이루는 자동차용 파워스티어링의 인풋샤프트와 토션바를 제공하는 것이다.The present invention is to solve such a conventional problem, the object is to form a concave-convex portion at a predetermined position of the end of the torsion bar fitted to the input shaft, the caulking portion is pressed to be in close contact with the concave-convex portion at a predetermined position on the outer peripheral surface of the input shaft It is to provide an input shaft and a torsion bar of the power steering for automobiles to shorten the process and reduce manufacturing costs.

도 1은 본 발명에 따른 인풋샤프트와 토션바의 결합 상태 종단면도이다.1 is a longitudinal cross-sectional view of the coupled state of the input shaft and the torsion bar according to the present invention.

도 2는 도 1의 A-A선 단면도로서 인풋샤프트와 토션바의 결합 전 상태이다.FIG. 2 is a cross-sectional view taken along the line A-A of FIG. 1 before the coupling of the input shaft and the torsion bar.

도 3은 종래의 인풋샤프트와 토션바의 결합 상태 종단면도이다.Figure 3 is a longitudinal cross-sectional view of a conventional input shaft and the torsion bar coupled state.

도 4는 도 3의 B-B선 단면도이다.4 is a cross-sectional view taken along the line B-B in FIG.

<도면의 주요 부분에 대한 부호의 설명><Explanation of symbols for the main parts of the drawings>

10: 인풋샤프트 11: 관통구멍10: input shaft 11: through hole

15: 코킹부 20: 토션바15: caulking unit 20: torsion bar

21: 요철부21: uneven part

이와 같은 목적을 달성하기 위한 본 발명은, 토션바가 인풋샤프트의 축방향중심에 끼워진 자동차용 파워스티어링의 인풋샤프트와 토션바에 있어서, 상기 토션바의 단부 소정위치에 소정폭의 요철부가 원주방향으로 형성되어 인풋샤프트의 축중심에 끼워짐과 더불어 토션바가 축방향 및 회전방향으로 유동되지 않도록 요철부가 위치한 인풋샤프트의 외주면 소정위치를 가압하여 밀착시키도록 코킹부를 갖춘 것을 특징으로 한다.In order to achieve the above object, the present invention provides an input shaft and a torsion bar of a power steering for a vehicle in which a torsion bar is fitted in the axial center of the input shaft, wherein the uneven portion having a predetermined width is formed at a predetermined position at the end of the torsion bar in the circumferential direction. It is characterized in that it is fitted to the axial center of the input shaft and the caulking portion to press the predetermined position on the outer circumferential surface of the input shaft is located so that the torsion bar does not flow in the axial and rotational direction.

이하 본 발명의 실시예에 따른 구성 및 작용을 첨부 도면에 따라 상세히 설명한다.Hereinafter, the configuration and operation according to the embodiment of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명에 따른 인풋샤프트와 토션바의 결합 상태 종단면도이고, 도 2는 도 1의 A-A선 단면도로서 인풋샤프트와 토션바의 결합 전 상태이며, 도 3 및 도 4와 동일 구성요소에 대해서는 동일한 부호를 사용하며, 그 설명은 생략한다.1 is a longitudinal cross-sectional view of the coupling state of the input shaft and the torsion bar according to the present invention, and FIG. 2 is a cross-sectional view taken along line AA of FIG. 1 before the coupling of the input shaft and the torsion bar, and the same components as in FIGS. 3 and 4. The same reference numerals are used, and description thereof is omitted.

이에 도시된 바와 같이, 토션바(20)가 인풋샤프트(10)의 축방향중심에 끼워지는데, 이 토션바(20)의 단부 소정위치에 소정폭의 요철부(21)가 원주방향으로 형성된다.As shown therein, the torsion bar 20 is fitted to the axial center of the input shaft 10, and the uneven portion 21 of the predetermined width is formed in the circumferential direction at the predetermined position of the end of the torsion bar 20. .

그리고, 이 토션바(20)가 인풋샤프트(10)의 축중심에 끼워짐과 더불어 축방향 및 회전방향으로 유동되지 않도록 요철부(21)가 위치한 인풋샤프트(10)의 외주면 소정위치에는 코킹부(15)가 마련된다.In addition, the torsion bar 20 is fitted to the shaft center of the input shaft 10 and the caulking portion is disposed at a predetermined position on the outer circumferential surface of the input shaft 10 where the uneven portion 21 is located so that the torsion bar 20 does not flow in the axial and rotational directions. (15) is provided.

이 코킹부(15)는 외측에서 내측으로 가압하여 인풋샤프트(10)의 소정위치 내부와 토션바(20)의 요철부(21)가 서로 밀착되도록 마련되는 것이다.The caulking portion 15 is pressurized from the outer side to the inner side so that the inside of the predetermined position of the input shaft 10 and the concave-convex portion 21 of the torsion bar 20 are in close contact with each other.

이때, 토션바(20)는 최초 인풋샤프트(10)의 내부에 회전방향 및 축방향으로 유동가능하도록 도 2에서와 같이 반경방향으로 이격 설치되고, 이후 코킹부(15)의 외부를 코킹함으로 인해 인풋샤프트(10)의 내부에 고정 설치되는 것이다.At this time, the torsion bar 20 is radially spaced as shown in Figure 2 so as to be able to flow in the rotational direction and the axial direction inside the first input shaft 10, and then caulking the outside of the caulking portion 15 It is fixed to the interior of the input shaft (10).

아울러, 요철부(21)는 대략 세레이션과 같거나 유사한 형상으로 마련될 수 있음은 물론이다.In addition, the concave-convex portion 21 may be provided in a shape substantially the same as or similar to the serration.

따라서, 상기 토션바(20)에 회전과 습동 운동을 고정할 수 있는 구조를 포함시켜 그 곳에 인풋샤프트(10)를 코킹함으로써, 토션바(20)의 요철부(21)에 인풋샤프트(10)의 코킹부(15)가 밀착되어 회전과 습동 운동을 제한하게 된다.Therefore, by including the structure to fix the rotation and sliding motion to the torsion bar 20 and caulking the input shaft 10 there, the input shaft 10 to the concave-convex portion 21 of the torsion bar 20. Caulking portion of 15 is in close contact is to limit the rotation and sliding movement.

이때 상기 인풋샤프트(10)와 토션바(20)에 드릴링작업과 리밍작업등이 필요하지 않아 공수절감 및 제조원가 절감을 달성할 수 있게 된다.In this case, drilling and reaming operations are not required on the input shaft 10 and the torsion bar 20, thereby achieving a reduction in labor and manufacturing cost.

이상에서 설명한 바와 같이, 본 발명은 토션바의 단부 소정위치에 요철부를 형성하고, 이에 대응되는 인풋샤프트의 외부 일측에 코킹부를 형성하여, 요철부와 코킹부를 마주시키고, 그 외부측을 가압함으로써, 인풋샤프트와 토션바를 간단히 결합시킬 수 있게되므로, 인풋샤프트와 토션바의 결합시키는 공정의 단축 및 이로 인한 제조원가 절감을 이룰 수 있는 이점이 있다.As described above, the present invention forms an uneven portion at a predetermined position of the end of the torsion bar, and forms a caulking portion on the outer side of the input shaft corresponding to the uneven portion, facing the uneven portion and the caulking portion, and pressurizing the outer side thereof. Since the input shaft and the torsion bar can be easily combined, there is an advantage of shortening the process of combining the input shaft and the torsion bar and thereby reducing manufacturing costs.

Claims (2)

토션바가 인풋샤프트의 축방향중심에 끼워진 자동차용 파워스티어링의 인풋샤프트와 토션바에 있어서,In the input shaft and torsion bar of the power steering for automobiles where the torsion bar is fitted in the axial center of the input shaft, 상기 토션바의 단부 소정위치에 소정폭의 요철부가 원주방향으로 형성되어 인풋샤프트의 축중심에 끼워짐과 더불어 토션바가 축방향 및 회전방향으로 유동되지 않도록 요철부가 위치한 인풋샤프트의 외주면 소정위치를 가압하여 밀착시키도록 코킹부를 갖춘 자동차용 파워스티어링의 인풋샤프트와 토션바.The uneven part of the predetermined width is formed in the circumferential direction at a predetermined position of the end of the torsion bar, and is fitted in the axial center of the input shaft and presses the predetermined position of the outer circumferential surface of the input shaft where the uneven part is located so that the torsion bar does not flow in the axial direction and the rotation direction. Input shaft and torsion bar for automotive power steering with a caulking unit. 제 1항에 있어서,The method of claim 1, 상기 요철부가 세레이션으로 된 것을 특징으로 하는 자동차용 파워스티어링의 인풋샤프트와 토션바.Input shaft and torsion bar of the power steering for the vehicle, characterized in that the uneven portion is a serration.
KR1020010066255A 2001-10-26 2001-10-26 Input shaft and torsion bar of power steering for vehicle KR20030034603A (en)

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KR1020010066255A KR20030034603A (en) 2001-10-26 2001-10-26 Input shaft and torsion bar of power steering for vehicle

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09193819A (en) * 1996-01-17 1997-07-29 Kayaba Ind Co Ltd Power steering device
JPH1111339A (en) * 1997-06-24 1999-01-19 Kayaba Ind Co Ltd Power steering device
JP2000038150A (en) * 1998-07-23 2000-02-08 Koyo Seiko Co Ltd Hydraulic control valve for power steering device
JP2000038149A (en) * 1998-07-23 2000-02-08 Toyoda Mach Works Ltd Power steering device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09193819A (en) * 1996-01-17 1997-07-29 Kayaba Ind Co Ltd Power steering device
JPH1111339A (en) * 1997-06-24 1999-01-19 Kayaba Ind Co Ltd Power steering device
JP2000038150A (en) * 1998-07-23 2000-02-08 Koyo Seiko Co Ltd Hydraulic control valve for power steering device
JP2000038149A (en) * 1998-07-23 2000-02-08 Toyoda Mach Works Ltd Power steering device

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