KR20050046129A - Apparatus for reducing pulse for power steering vane pump - Google Patents
Apparatus for reducing pulse for power steering vane pump Download PDFInfo
- Publication number
- KR20050046129A KR20050046129A KR1020030080128A KR20030080128A KR20050046129A KR 20050046129 A KR20050046129 A KR 20050046129A KR 1020030080128 A KR1020030080128 A KR 1020030080128A KR 20030080128 A KR20030080128 A KR 20030080128A KR 20050046129 A KR20050046129 A KR 20050046129A
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- vane
- pump
- variable
- power steering
- vane pump
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/30—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F04C2/34—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members
- F04C2/344—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
-
- 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
- B62D5/062—Details, component parts
- B62D5/063—Pump driven by vehicle engine
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
Abstract
본 발명에 의한 파워 스티어링용 베인펌프의 맥동저감장치는, 베인로터의 외주면에 형성된 슬릿홈에 가변베인이 끼워져 설치된 베인펌프에 있어서, 상기 슬릿홈은 베인로터(20)의 일측면에서 타측면을 향하여 소정의 각도로 기울어져 형성되어, 상기 가변베인(22)이 베인로터의 축방향에 대해 소정각도로 기울어져 끼워져 있으므로, 베인의 설치를 간단히 변경함으로써 맥동을 현저히 줄일 수 있다. The pulsation reducing device of the vane pump for power steering according to the present invention is a vane pump in which a variable vane is fitted into a slit groove formed on the outer circumferential surface of the vane rotor, wherein the slit groove is provided at the other side of the vane rotor 20. The variable vanes 22 are formed to be inclined at a predetermined angle, and the variable vanes 22 are inclined at a predetermined angle with respect to the axial direction of the vane rotor, so that the pulsation can be significantly reduced by simply changing the installation of the vanes.
Description
본 발명은 파워 스티어링용 베인펌프의 맥동저감장치에 관한 것이다.The present invention relates to a pulsation reducing device of a vane pump for power steering.
자동차의 파워 스티어링용 베인펌프는 도1에 도시한 바와 같이, 펌프 바디(2)에는 유입구(4)와 토출구(6)를 구비한 펌프실(8)이 타원형으로 형성되고, 상기 펌프실(8)에는 그 내주면에 밀착되는 가변베인(10)이 설치된 베인로터(12)가 회전축(14)을 통해 회전가능케 설치되어 있다.In the vane pump for power steering of a vehicle, as illustrated in FIG. 1, a pump chamber 8 having an inlet port 4 and an outlet port 6 is formed in an elliptical shape in the pump body 2, and in the pump chamber 8, The vane rotor 12 provided with the variable vane 10 in close contact with the inner circumferential surface thereof is rotatably installed through the rotation shaft 14.
상기 가변베인(10)은 도2에 도시한 바와 같이 베인로터(12)의 외주면에 형성된 슬릿홈에 끼워져 설치되어 있는데, 베인로터(12)의 축방향에 평행하게 끼워져 있다. The variable vane 10 is fitted into a slit groove formed on the outer circumferential surface of the vane rotor 12, as shown in Fig. 2, and is fitted parallel to the axial direction of the vane rotor 12.
상기 베인로터(12)가 회전하게 되면, 이 베인로터(12)에 삽입 설치된 가변베인(10)이 펌프실(8)의 내주면에 밀착하여 베인로터(12)의 슬릿홈에서 슬라이딩하면서 작동유를 흡입하고 압축 및 토출하게 된다. 상기 작동유는 베인로터, 가변베인 및 캠링(도시안됨)의 구조상 정현파(sine파)의 형태로 토출이 이루어진다. 일반적으로 베인이 10개라고 하면 베인로터가 1회전하게 되면 베인에 의해 10번 토출하게 되고 펌프가 토출하는 총유량은 각 베인이 토출하는 유량의 합으로 표현된다.When the vane rotor 12 rotates, the variable vane 10 inserted into the vane rotor 12 comes into close contact with the inner circumferential surface of the pump chamber 8 and slides the hydraulic oil while sliding in the slit groove of the vane rotor 12. Compression and ejection. The hydraulic oil is discharged in the form of a sine wave in the vane rotor, the variable vane and the cam ring (not shown). In general, if there are 10 vanes, when the vane rotor rotates once, the vanes are discharged 10 times by the vanes, and the total flow rate discharged by the pump is expressed as the sum of the flow rates discharged by each vane.
그런데, 베인펌프의 구조상 토출하는 총유량은 맥동이 발생할 수밖에 없다. 즉, 각 베인이 토출하는 유량의 시간적 차이로 인해 토출 유량의 변화가 불가피하기 때문이다. 이러한 맥동은 조향시스템이 작동될 때 진동, 소음으로 나타나게 된다. 이러한 맥동치를 줄이기 위해 고압호스의 길이를 증대하거나 내부에 삽입관을 넣기도 하지만 펌프의 맥동치가 크게 되면 이러한 장치로서 맥동을 저감할 수 없게 되며, 다양한 맥동저감장치가 개시되어 있으나 유량의 맥동치를 줄이는 것에는 한계가 있다는 문제점이 있었다. However, in the structure of the vane pump, the total flow rate discharged inevitably causes pulsation. That is, the change in discharge flow rate is inevitable due to the time difference of the flow rate discharged by each vane. These pulsations appear as vibrations and noise when the steering system is operating. In order to reduce the pulsation value, the length of the high pressure hose may be increased or an insertion tube may be inserted therein. However, when the pulsation value of the pump is increased, the pulsation cannot be reduced by such a device, and various pulsation reduction devices have been disclosed. There was a problem that there is a limit.
따라서, 본 발명은 상기 문제점을 해결하기 위해 이루어진 것으로서, 본 발명의 목적은 베인의 설치를 간단히 변경함으로써 맥동을 현저히 줄일 수 있는 파워 스티어링용 베인펌프의 맥동저감장치를 제공하는데 있다. Accordingly, the present invention has been made to solve the above problems, and an object of the present invention is to provide a pulsation reducing device of a vane pump for power steering that can significantly reduce pulsation by simply changing the installation of the vanes.
상기 목적을 달성하기 위한 본 발명은, 베인로터의 외주면에 형성된 슬릿홈에 가변베인이 끼워져 설치된 베인펌프에 있어서, 상기 슬릿홈은 베인로터의 일측면에서 타측면을 향하여 소정의 각도로 기울어져 형성되어, 상기 가변베인이 베인로터의 축방향에 대해 소정각도로 기울어져 끼워져 있는 것을 특징으로 한다.The present invention for achieving the above object, in the vane pump is fitted with a variable vane is inserted into the slit groove formed on the outer circumferential surface of the vane rotor, the slit groove is formed inclined at a predetermined angle toward the other side from one side of the vane rotor The variable vane is characterized by being inclined at a predetermined angle with respect to the axial direction of the vane rotor.
상기 가변베인의 기울어진 각은 15°~ 40°로 되어 있는 것이 바람직하다.It is preferable that the inclination angle of the said variable vane is 15 degrees-40 degrees.
이하, 본 발명의 실시예에 대해 첨부도면을 참조하여 상세히 설명한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.
도3은 본 발명의 가변베인이 끼워진 베인로터의 입면도이다. 도시한 바와 같이, 본 발명이 적용된 베인펌프에서, 베인로터(20)의 외주면에 형성된 슬릿홈에 끼워져 설치되는 가변베인(22)는 베인로터(20)의 축방향에 대해 소정각도(θ)로 기울어져 있다. 따라서, 상기 베인로터(20)에 형성되는 슬릿홈은 베인로터(20)의 일측면에서 타측면을 향하여 소정의 각도로 기울어져 형성된다.Figure 3 is an elevational view of a vane rotor fitted with a variable vane of the present invention. As shown, in the vane pump to which the present invention is applied, the variable vane 22 fitted into the slit groove formed on the outer circumferential surface of the vane rotor 20 has a predetermined angle θ with respect to the axial direction of the vane rotor 20. It is tilted. Therefore, the slit groove formed in the vane rotor 20 is formed to be inclined at a predetermined angle toward the other side from one side of the vane rotor 20.
유동해석의 결과, 오일의 점도, 사용온도, 각 부분의 형상 등 여러 가지 경계조건에서 상황이 다를 수 있지만 대체적으로, 상기 가변베인(22)의 기울어진 각(θ)이 15°~ 40°에서 맥동치가 가장 적어지는 것으로 나타났다.As a result of the flow analysis, the situation may be different in various boundary conditions such as the viscosity of the oil, the temperature of use, the shape of each part, but in general, the inclination angle θ of the variable vane 22 is 15 ° to 40 °. The lowest pulsation was found.
도4는 10개의 베인이 설치된 베인로터가 회전함에 따라 토출되는 유량의 그래프를 나타내는데, 도4의 (a) 및 (b)는 종래기술이 적용된 베인펌프의 총유량 및 베인유량을 나타낸 그래프이고, 도4의 (c) 및 (d)는 본 발명의 기술이 적용된 베인펌프의 총유량 및 베인유량을 나타낸 그래프이다. 그래프에서 표시된 바와 같이 총유량의 맥동은 P에서 P'로 현저히 줄어들었음을 알 수 있다. 이는 종래 각 베인의 유량곡선의 폭(W)보다 본 발명의 각 베인의 유량곡선의 폭(W')이 늘어나게 되어 인접하는 각 베인의 유량곡선 사이의 공간이 줄어들기 때문이다.Figure 4 shows a graph of the flow rate discharged as the vane rotor is installed 10 vanes, Figure 4 (a) and (b) is a graph showing the total flow rate and vane flow rate of the vane pump to which the prior art is applied, 4 (c) and (d) are graphs showing the total flow rate and the vane flow rate of the vane pump to which the technique of the present invention is applied. As indicated in the graph, it can be seen that the pulsation of the total flow rate was significantly reduced from P to P '. This is because the width (W ') of the flow curve of each vane of the present invention is larger than the width (W) of the flow curve of each vane in the related art, thereby reducing the space between the flow curves of adjacent vanes.
도5는 베인펌프에서 가변베인 1개에 의해 토출되는 유량을 나타낸 그래프인데, 종래 기술의 베인펌프에서는 다음 [식1]로 토출유량이 표시되고, 본 발명의 베인펌프에서는 다음 [식2]로 토출유량이 표시된다.5 is a graph showing the flow rate discharged by one variable vane in the vane pump, the discharge flow rate is represented by the following [Equation 1] in the vane pump of the prior art, the following [Equation 2] in the vane pump of the present invention The discharge flow rate is displayed.
[식1] [Equation 1]
[식2] [Equation 2]
상기 식에서 θ는 베인경사각이고, A 및 α는 실험에 의해 정해지는 상수이다.Is the vane inclination angle, and A and α are constants determined by experiments.
도6은 베인펌프에서 가변베인 10개를 가진 베인로터가 1회전할 시에 토출되는 유량을 나타낸 그래프인데, 종래 기술의 베인펌프에서는 다음 [식3]로 토출유량이 표시되고, 본 발명의 베인펌프에서는 다음 [식4]로 토출유량이 표시된다.6 is a graph showing the flow rate discharged when the vane rotor having 10 variable vanes in one vane pump rotates one rotation. In the vane pump of the related art, the discharge flow rate is represented by the following [Equation 3], and the vane of the present invention In the pump, the discharge flow rate is represented by the following [Equation 4].
[식3] [Equation 3]
[식4] [Equation 4]
상기 식에서 θ는 베인경사각이고, B, C, B', C', β 및 χ는 실험에 의해 정해지는 상수이다.Is the vane inclination angle, and B, C, B ', C', β and χ are constants determined by experiments.
본 발명에 의한 파워 스티어링 베인펌프의 맥동저감장치에 의하면, 베인의 설치를 간단히 변경함으로써 맥동을 현저히 줄일 수 있다.According to the pulsation reducing device of the power steering vane pump according to the present invention, the pulsation can be significantly reduced by simply changing the installation of the vanes.
도1은 일반적인 파워 스티어링용 베인펌프를 나타내는 개략 단면도,1 is a schematic cross-sectional view showing a vane pump for a general power steering;
도2는 종래 베인이 설치된 베인로터를 나타내는 사시도,2 is a perspective view showing a vane rotor in which a conventional vane is installed;
도3은 본 발명에 의한 베인이 설치된 베인로터를 나타내는 입면도,3 is an elevation view showing a vane rotor provided with vanes according to the present invention;
도4는 가변베인이 설치된 베인로터가 회전함에 따라 토출되는 유량을 나타내는 그래프,4 is a graph showing a flow rate discharged as the vane rotor with variable vanes is rotated;
도5는 베인펌프에서 가변베인 1개에 의해 토출되는 유량을 나타낸 그래프5 is a graph showing the flow rate discharged by one variable vane in the vane pump
도6은 베인펌프에서 가변베인 10개를 가진 베인로터가 1회전할 시에 토출되는 유량을 나타낸 그래프이다.FIG. 6 is a graph showing a flow rate discharged when a vane rotor having 10 variable vanes is rotated in a vane pump once.
<도면의 주요 부분에 대한 부호의 설명><Explanation of symbols for the main parts of the drawings>
20 : 베인로터 22 : 가변베인20: vane rotor 22: variable vanes
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| Application Number | Priority Date | Filing Date | Title |
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| KR1020030080128A KR20050046129A (en) | 2003-11-13 | 2003-11-13 | Apparatus for reducing pulse for power steering vane pump |
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| KR1020030080128A KR20050046129A (en) | 2003-11-13 | 2003-11-13 | Apparatus for reducing pulse for power steering vane pump |
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| KR20050046129A true KR20050046129A (en) | 2005-05-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101349690B1 (en) * | 2011-12-19 | 2014-01-13 | 자동차부품연구원 | Vane pump and vehicle having the same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101349690B1 (en) * | 2011-12-19 | 2014-01-13 | 자동차부품연구원 | Vane pump and vehicle having the same |
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